Annotation of Amaya/amaya/MathMLbuilder.c, revision 1.173
1.1 cvs 1: /*
2: *
1.144 vatton 3: * (c) COPYRIGHT MIT and INRIA, 1996-2002
1.1 cvs 4: * Please first read the full copyright statement in file COPYRIGHT.
5: *
6: */
1.159 quint 7:
1.1 cvs 8: /*
9: * MathMLbuilder
10: *
11: * Author: V. Quint
12: */
13:
14: #define THOT_EXPORT extern
1.4 cvs 15: #include "amaya.h"
1.25 cvs 16: #include "css.h"
1.59 cvs 17: #include "html2thot_f.h"
1.133 cvs 18: #include "HTMLactions_f.h"
1.25 cvs 19: #include "MathML.h"
1.169 quint 20: #include "HTML.h"
1.25 cvs 21: #include "parser.h"
1.59 cvs 22: #include "styleparser_f.h"
23: #include "style.h"
24: #include "undo.h"
1.133 cvs 25: #include "Xml2thot_f.h"
1.109 cvs 26:
1.106 cvs 27: /* Define a pointer to let parser functions access the Math entity table */
28: extern XmlEntity *pMathEntityTable;
1.1 cvs 29:
30: #define MaxMsgLength 200
31:
1.12 cvs 32: #include "HTMLtable_f.h"
1.29 cvs 33: #include "Mathedit_f.h"
34: #include "styleparser_f.h"
35: #include "fetchXMLname_f.h"
1.1 cvs 36:
37: /*----------------------------------------------------------------------
1.170 quint 38: IsLargeOp
39: Return TRUE if character is listed as a largeop in the MathML 2.0
40: Operator dictionary (appendix F.5)
41: ----------------------------------------------------------------------*/
1.171 carcone 42: static ThotBool IsLargeOp (CHAR_T character, char script)
1.170 quint 43: {
44: /****** to be completed *****/
45: #ifdef _I18N_
46: if (character == 8721 || character == 8719) /* large Sigma or Pi */
47: #else
48: if ((script == 'G') &&
49: (character == 229 || character == 213)) /* large Sigma or Pi */
50: #endif
51: /* it's a large character */
52: return TRUE;
53: else
54: return FALSE;
55: }
56:
57: /*----------------------------------------------------------------------
58: IsStretchy
59: Return TRUE if character is listed as a stretchy operator in the MathML 2.0
60: Operator dictionary (appendix F.5)
61: ----------------------------------------------------------------------*/
1.171 carcone 62: static ThotBool IsStretchy (CHAR_T character, char script)
1.170 quint 63: {
64: /****** to be completed *****/
65: if ((
66: #ifndef _I18N_
67: (script == 'L') &&
68: #endif
69: (character == '(' || character == ')' ||
70: character == '[' || character == ']' ||
71: character == '{' || character == '}' ||
72: character == '|')) ||
73: (
74: /* test left and right angle brackets */
75: #ifdef _I18N_
76: (character == 9001 || character == 9002)
77: #else
78: (script == 'G') &&
79: (character == 225 || character == 241)
80: #endif
81: ))
82: return TRUE;
83: else
84: return FALSE;
85: }
86:
87: /*----------------------------------------------------------------------
1.1 cvs 88: MapMathMLAttribute
89: Search in the Attribute Mapping Table the entry for the
90: attribute of name Attr and returns the corresponding Thot attribute type.
91: ----------------------------------------------------------------------*/
1.120 cvs 92: void MapMathMLAttribute (char *attrName, AttributeType *attrType,
93: char *elementName, ThotBool *level, Document doc)
1.1 cvs 94: {
1.68 cvs 95: attrType->AttrSSchema = GetMathMLSSchema (doc);
1.170 quint 96: MapXMLAttribute (MATH_TYPE, attrName, elementName, level, doc,
97: &(attrType->AttrTypeNum));
1.1 cvs 98: }
99:
100: /*----------------------------------------------------------------------
101: MapMathMLAttributeValue
102: Search in the Attribute Value Mapping Table the entry for the attribute
103: ThotAtt and its value AttrVal. Returns the corresponding Thot value.
104: ----------------------------------------------------------------------*/
1.150 vatton 105: void MapMathMLAttributeValue (char *attVal, AttributeType attrType, int *value)
1.1 cvs 106: {
1.150 vatton 107: MapXMLAttributeValue (MATH_TYPE, attVal, attrType, value);
1.1 cvs 108: }
109:
110: /*----------------------------------------------------------------------
1.130 carcone 111: MathMLEntityCreated
112: ----------------------------------------------------------------------*/
113: void MathMLEntityCreated (unsigned char *entityValue, Language lang,
114: char *entityName, Document doc)
115: {
116: }
117:
118: /*----------------------------------------------------------------------
1.1 cvs 119: ElementNeedsPlaceholder
120: returns TRUE if element el needs a sibling placeholder.
121: ----------------------------------------------------------------------*/
1.18 cvs 122: ThotBool ElementNeedsPlaceholder (Element el)
1.1 cvs 123: {
124: ElementType elType;
1.138 cvs 125: Element child, parent, sibling;
1.18 cvs 126: ThotBool ret;
1.139 quint 127:
1.1 cvs 128: ret = FALSE;
129: elType = TtaGetElementType (el);
1.43 cvs 130: if (elType.ElTypeNum == MathML_EL_MS ||
1.39 cvs 131: elType.ElTypeNum == MathML_EL_MFRAC ||
1.54 cvs 132: elType.ElTypeNum == MathML_EL_BevelledMFRAC ||
1.39 cvs 133: elType.ElTypeNum == MathML_EL_MSQRT ||
134: elType.ElTypeNum == MathML_EL_MROOT ||
135: elType.ElTypeNum == MathML_EL_MSTYLE ||
136: elType.ElTypeNum == MathML_EL_MERROR ||
137: elType.ElTypeNum == MathML_EL_MPADDED ||
138: elType.ElTypeNum == MathML_EL_MPHANTOM ||
139: elType.ElTypeNum == MathML_EL_MFENCED ||
1.1 cvs 140: elType.ElTypeNum == MathML_EL_MF ||
141: elType.ElTypeNum == MathML_EL_MSUB ||
142: elType.ElTypeNum == MathML_EL_MSUP ||
1.39 cvs 143: elType.ElTypeNum == MathML_EL_MSUBSUP ||
1.1 cvs 144: elType.ElTypeNum == MathML_EL_MUNDER ||
145: elType.ElTypeNum == MathML_EL_MOVER ||
146: elType.ElTypeNum == MathML_EL_MUNDEROVER ||
1.28 cvs 147: elType.ElTypeNum == MathML_EL_MMULTISCRIPTS ||
1.39 cvs 148: elType.ElTypeNum == MathML_EL_MTABLE ||
149: elType.ElTypeNum == MathML_EL_MACTION)
1.1 cvs 150: ret = TRUE;
1.138 cvs 151: else if (elType.ElTypeNum == MathML_EL_MROW)
152: /* a mrow needs a place holder only if it's not the sole child of
153: an element such as Numerator, Denominator, RootBase, Index, etc. */
154: {
155: ret = TRUE;
156: sibling = el; TtaNextSibling (&sibling);
157: if (!sibling)
158: {
1.139 quint 159: sibling = el; TtaPreviousSibling (&sibling);
1.138 cvs 160: if (!sibling)
161: {
162: parent = TtaGetParent (el);
163: if (parent)
164: {
165: elType = TtaGetElementType (parent);
166: if (elType.ElTypeNum == MathML_EL_Numerator ||
167: elType.ElTypeNum == MathML_EL_Denominator ||
168: elType.ElTypeNum == MathML_EL_RootBase ||
169: elType.ElTypeNum == MathML_EL_Index ||
170: elType.ElTypeNum == MathML_EL_FencedExpression ||
171: elType.ElTypeNum == MathML_EL_Base ||
172: elType.ElTypeNum == MathML_EL_Subscript ||
173: elType.ElTypeNum == MathML_EL_Superscript ||
174: elType.ElTypeNum == MathML_EL_UnderOverBase ||
175: elType.ElTypeNum == MathML_EL_Underscript ||
176: elType.ElTypeNum == MathML_EL_Overscript ||
177: elType.ElTypeNum == MathML_EL_MultiscriptBase ||
178: elType.ElTypeNum == MathML_EL_MSubscript ||
179: elType.ElTypeNum == MathML_EL_MSuperscript)
180: ret = FALSE;
181: }
182: }
183: }
184: }
1.158 quint 185: else if (elType.ElTypeNum == MathML_EL_MO ||
186: elType.ElTypeNum == MathML_EL_OpeningFence ||
187: elType.ElTypeNum == MathML_EL_ClosingFence ||
188: elType.ElTypeNum == MathML_EL_FencedSeparator)
1.138 cvs 189: /* an operator that contains a single Symbol needs a placeholder,
190: except when it is in a Base or UnderOverBase */
191: {
192: child = TtaGetFirstChild (el);
193: if (child != NULL)
1.1 cvs 194: {
1.138 cvs 195: elType = TtaGetElementType (child);
196: if (elType.ElTypeNum == MathML_EL_SYMBOL_UNIT)
197: {
1.1 cvs 198: ret = TRUE;
199: parent = TtaGetParent (el);
200: if (parent != NULL)
201: {
1.138 cvs 202: elType = TtaGetElementType (parent);
203: if (elType.ElTypeNum == MathML_EL_Base ||
204: elType.ElTypeNum == MathML_EL_UnderOverBase)
1.139 quint 205: ret = FALSE;
206: }
207: }
208: }
209: }
210: else if (elType.ElTypeNum == MathML_EL_MSPACE)
211: {
212: /* in principle mspace needs a placeholder sibling */
213: ret = TRUE;
214: /* but if it's the only child of a mstyle element, the placeholders
215: would change the height and width of the mstyle. Consider for
216: instance:
217: <mstyle background="#000099">
218: <mspace depth="2mm" width=".2in"/>
219: </mstyle> */
220: sibling = el; TtaNextSibling (&sibling);
221: if (!sibling)
222: {
223: sibling = el; TtaPreviousSibling (&sibling);
224: if (!sibling)
225: {
226: parent = TtaGetParent (el);
227: if (parent)
228: {
229: elType = TtaGetElementType (parent);
230: if (elType.ElTypeNum == MathML_EL_MSTYLE)
1.138 cvs 231: ret = FALSE;
1.1 cvs 232: }
1.138 cvs 233: }
1.1 cvs 234: }
1.138 cvs 235: }
1.1 cvs 236: return ret;
237: }
1.132 cvs 238:
1.1 cvs 239: /*----------------------------------------------------------------------
240: CreatePlaceholders
241: ----------------------------------------------------------------------*/
242: static void CreatePlaceholders (Element el, Document doc)
243: {
1.132 cvs 244: Element sibling, prev, constr, child;
245: Attribute attr;
246: ElementType elType;
247: AttributeType attrType;
248: ThotBool create, stretchableSubsup;
1.1 cvs 249:
1.55 cvs 250: if (!el)
251: return;
1.2 cvs 252: elType.ElSSchema = GetMathMLSSchema (doc);
1.1 cvs 253: prev = NULL;
254: create = TRUE;
255: sibling = el;
256: while (sibling != NULL)
257: {
258: if (!ElementNeedsPlaceholder (sibling))
259: create = FALSE;
260: else
261: {
262: if (sibling == el)
263: /* first element */
264: {
265: elType = TtaGetElementType (sibling);
266: if (elType.ElTypeNum == MathML_EL_MF)
267: /* the first element is a MF. Don't create a placeholder
268: before */
269: create = FALSE;
270: else if (elType.ElTypeNum == MathML_EL_MROW)
271: /* the first element is a MROW */
272: {
273: child = TtaGetFirstChild (sibling);
274: if (child != NULL)
275: {
276: elType = TtaGetElementType (child);
277: if (elType.ElTypeNum != MathML_EL_MF)
278: /* the first child of the MROW element is not a MF */
279: /* Don't create a placeholder before */
280: create = FALSE;
281: }
282: }
283: }
284: if (create)
285: {
286: elType.ElTypeNum = MathML_EL_Construct;
287: constr = TtaNewElement (doc, elType);
288: TtaInsertSibling (constr, sibling, TRUE, doc);
289: attrType.AttrSSchema = elType.ElSSchema;
1.22 cvs 290: attrType.AttrTypeNum = MathML_ATTR_IntPlaceholder;
1.1 cvs 291: attr = TtaNewAttribute (attrType);
292: TtaAttachAttribute (constr, attr, doc);
1.55 cvs 293: TtaSetAttributeValue (attr, MathML_ATTR_IntPlaceholder_VAL_yes_,
294: constr, doc);
1.1 cvs 295: }
296: create = TRUE;
297: }
298: prev = sibling;
299: TtaNextSibling (&sibling);
300: }
301: if (prev != NULL && create)
302: {
1.132 cvs 303: stretchableSubsup = FALSE;
1.1 cvs 304: elType = TtaGetElementType (prev);
1.95 cvs 305: /* don't insert a placeholder after the last element if it's a MF */
306: if (elType.ElTypeNum == MathML_EL_MF)
1.1 cvs 307: create = FALSE;
308: else if (elType.ElTypeNum == MathML_EL_MROW)
309: /* the last element is a MROW */
310: {
311: child = TtaGetLastChild (prev);
312: if (child != NULL)
313: {
314: elType = TtaGetElementType (child);
315: if (elType.ElTypeNum != MathML_EL_MF)
316: /* the last child of the MROW element is not a MF */
317: /* Don't create a placeholder before */
318: create = FALSE;
319: }
320: }
1.132 cvs 321: else if (elType.ElTypeNum == MathML_EL_MSUBSUP ||
322: elType.ElTypeNum == MathML_EL_MSUB ||
323: elType.ElTypeNum == MathML_EL_MSUP ||
324: elType.ElTypeNum == MathML_EL_MUNDEROVER ||
325: elType.ElTypeNum == MathML_EL_MUNDER ||
326: elType.ElTypeNum == MathML_EL_MUNDEROVER)
327: {
328: attrType.AttrSSchema = elType.ElSSchema;
329: attrType.AttrTypeNum = MathML_ATTR_IntVertStretch;
330: if (TtaGetAttribute (prev, attrType))
331: stretchableSubsup = TRUE;
332: }
333:
1.1 cvs 334: if (create)
335: {
1.132 cvs 336: if (stretchableSubsup)
337: elType.ElTypeNum = MathML_EL_Construct1;
338: else
339: elType.ElTypeNum = MathML_EL_Construct;
1.1 cvs 340: constr = TtaNewElement (doc, elType);
341: TtaInsertSibling (constr, prev, FALSE, doc);
342: attrType.AttrSSchema = elType.ElSSchema;
1.22 cvs 343: attrType.AttrTypeNum = MathML_ATTR_IntPlaceholder;
1.1 cvs 344: attr = TtaNewAttribute (attrType);
345: TtaAttachAttribute (constr, attr, doc);
1.55 cvs 346: TtaSetAttributeValue (attr, MathML_ATTR_IntPlaceholder_VAL_yes_,
347: constr, doc);
1.132 cvs 348: }
1.1 cvs 349: }
350: }
351:
352: /*----------------------------------------------------------------------
1.95 cvs 353: NextNotComment
354: Return the next sibling of element el that is not an XMLcomment element.
355: Return el itself if it's not a comment.
1.1 cvs 356: ----------------------------------------------------------------------*/
1.95 cvs 357: static void NextNotComment (Element* el, Element* prev)
1.1 cvs 358: {
359: ElementType elType;
360:
361: if (*el == NULL)
362: return;
363: elType = TtaGetElementType (*el);
1.95 cvs 364: while (*el != NULL && elType.ElTypeNum == MathML_EL_XMLcomment)
1.1 cvs 365: {
366: *prev = *el;
367: TtaNextSibling (el);
368: if (*el != NULL)
369: elType = TtaGetElementType (*el);
370: }
371: }
372:
373: /*----------------------------------------------------------------------
374: CheckMathSubExpressions
375: Children of element el should be of type type1, type2, and type3.
1.56 cvs 376: If they are not, wrap them in elements of these types.
1.124 cvs 377: If element el has too many or not enough children, return FALSE.
1.1 cvs 378: ----------------------------------------------------------------------*/
1.56 cvs 379: static ThotBool CheckMathSubExpressions (Element el, int type1, int type2, int type3, Document doc)
1.1 cvs 380: {
381: Element child, new, prev;
382: ElementType elType, childType;
1.124 cvs 383: char msgBuffer[200];
1.56 cvs 384: ThotBool result;
1.1 cvs 385:
1.56 cvs 386: result = TRUE;
1.2 cvs 387: elType.ElSSchema = GetMathMLSSchema (doc);
1.1 cvs 388: child = TtaGetFirstChild (el);
389: prev = NULL;
1.95 cvs 390: NextNotComment (&child, &prev);
1.56 cvs 391: if (type1 == 0)
1.1 cvs 392: {
1.56 cvs 393: if (child)
394: /* no child expected and there is one, error */
1.124 cvs 395: {
396: sprintf (msgBuffer, "No subexpression allowed in %s",
397: TtaGetElementTypeName (TtaGetElementType (el)));
398: XmlParseError (errorParsing, msgBuffer, 0);
399: result = FALSE;
400: }
1.56 cvs 401: }
402: else
403: if (!child)
404: /* a first child is expected and it's missing */
1.124 cvs 405: {
406: sprintf (msgBuffer, "Missing subexpression in %s",
407: TtaGetElementTypeName (TtaGetElementType (el)));
408: XmlParseError (errorParsing, msgBuffer, 0);
409: result = FALSE;
410: }
1.56 cvs 411: else
412: {
1.1 cvs 413: elType.ElTypeNum = type1;
414: childType = TtaGetElementType (child);
415: if (TtaSameTypes (childType, elType) == 0)
416: {
417: TtaRemoveTree (child, doc);
418: new = TtaNewElement (doc, elType);
419: if (prev == NULL)
420: TtaInsertFirstChild (&new, el, doc);
421: else
422: TtaInsertSibling (new, prev, FALSE, doc);
423: TtaInsertFirstChild (&child, new, doc);
424: CreatePlaceholders (child, doc);
425: child = new;
426: }
1.56 cvs 427: prev = child;
428: TtaNextSibling (&child);
1.95 cvs 429: NextNotComment (&child, &prev);
1.56 cvs 430: if (type2 == 0)
431: {
432: if (child)
433: /* this second child is not expected, error */
1.124 cvs 434: {
435: sprintf (msgBuffer, "Only 1 subexpression allowed in %s",
436: TtaGetElementTypeName (TtaGetElementType (el)));
437: XmlParseError (errorParsing, msgBuffer, 0);
438: result = FALSE;
439: }
1.56 cvs 440: }
441: else
1.1 cvs 442: {
1.56 cvs 443: if (!child)
444: /* a second child is expected and it's missing */
1.124 cvs 445: {
446: sprintf (msgBuffer, "2 subexpressions required in %s",
447: TtaGetElementTypeName (TtaGetElementType (el)));
448: XmlParseError (errorParsing, msgBuffer, 0);
449: result = FALSE;
450: }
1.56 cvs 451: else
1.1 cvs 452: {
453: elType.ElTypeNum = type2;
454: childType = TtaGetElementType (child);
455: if (TtaSameTypes (childType, elType) == 0)
456: {
457: TtaRemoveTree (child, doc);
458: new = TtaNewElement (doc, elType);
459: TtaInsertSibling (new, prev, FALSE, doc);
460: TtaInsertFirstChild (&child, new, doc);
461: CreatePlaceholders (child, doc);
462: child = new;
463: }
1.56 cvs 464: prev = child;
465: TtaNextSibling (&child);
1.95 cvs 466: NextNotComment (&child, &prev);
1.56 cvs 467: if (type3 == 0)
1.1 cvs 468: {
1.56 cvs 469: if (child)
470: /* this third child is not expected, error */
1.124 cvs 471: {
472: sprintf (msgBuffer, "Only 2 subexpressions allowed in %s",
473: TtaGetElementTypeName (TtaGetElementType (el)));
474: XmlParseError (errorParsing, msgBuffer, 0);
475: result = FALSE;
476: }
1.56 cvs 477: }
478: else
479: {
480: if (!child)
481: /* a third child is expected and it's missing */
1.124 cvs 482: {
483: sprintf (msgBuffer, "3 subexpressions required in %s",
484: TtaGetElementTypeName (TtaGetElementType (el)));
485: XmlParseError (errorParsing, msgBuffer, 0);
486: result = FALSE;
487: }
1.56 cvs 488: else
1.1 cvs 489: {
490: elType.ElTypeNum = type3;
491: childType = TtaGetElementType (child);
492: if (TtaSameTypes (childType, elType) == 0)
493: {
494: TtaRemoveTree (child, doc);
495: new = TtaNewElement (doc, elType);
496: TtaInsertSibling (new, prev, FALSE, doc);
497: TtaInsertFirstChild (&child, new, doc);
498: CreatePlaceholders (child, doc);
1.56 cvs 499: child = new;
1.1 cvs 500: }
501: }
1.56 cvs 502: prev = child;
503: TtaNextSibling (&child);
1.95 cvs 504: NextNotComment (&child, &prev);
1.56 cvs 505: if (child)
506: /* this fourth child is unexpected */
1.124 cvs 507: {
508: sprintf (msgBuffer,"Only 3 subexpressions allowed in %s",
509: TtaGetElementTypeName (TtaGetElementType (el)));
510: XmlParseError (errorParsing, msgBuffer, 0);
511: result = FALSE;
512: }
1.1 cvs 513: }
514: }
515: }
1.56 cvs 516: }
517: return result;
1.1 cvs 518: }
519:
520: /*----------------------------------------------------------------------
1.22 cvs 521: SetSingleIntHorizStretchAttr
1.1 cvs 522:
1.22 cvs 523: Put a IntHorizStretch attribute on element el if it contains only
1.1 cvs 524: a MO element that is a stretchable symbol.
525: -----------------------------------------------------------------------*/
1.22 cvs 526: void SetSingleIntHorizStretchAttr (Element el, Document doc, Element* selEl)
1.1 cvs 527: {
528: Element child, sibling, textEl, symbolEl;
1.152 quint 529: ElementType elType, childType, siblingType;
1.1 cvs 530: Attribute attr;
531: AttributeType attrType;
1.55 cvs 532: Language lang;
1.128 vatton 533: CHAR_T text[2];
1.143 vatton 534: char script;
1.49 cvs 535: unsigned char c;
1.128 vatton 536: int len;
1.152 quint 537: ThotBool doit;
1.1 cvs 538:
539: if (el == NULL)
540: return;
541: child = TtaGetFirstChild (el);
1.154 vatton 542: textEl = NULL;
1.55 cvs 543: if (child)
1.1 cvs 544: {
545: elType = TtaGetElementType (child);
1.162 quint 546: /* skip empty Constructs (placeholders) and comments */
547: while (child &&
548: (elType.ElTypeNum == MathML_EL_Construct ||
549: elType.ElTypeNum == MathML_EL_XMLcomment) &&
550: !strcmp (TtaGetSSchemaName (elType.ElSSchema), "MathML"))
1.152 quint 551: {
552: TtaNextSibling (&child);
553: if (child)
554: elType = TtaGetElementType (child);
555: }
1.162 quint 556: while (child && elType.ElTypeNum == MathML_EL_MROW &&
557: strcmp (TtaGetSSchemaName (elType.ElSSchema), "MathML") == 0)
558: /* the first significant child is a mrow. Check whether it has a
559: single child */
1.98 cvs 560: {
561: child = TtaGetFirstChild (child);
562: if (child)
563: {
1.152 quint 564: elType = TtaGetElementType (child);
1.162 quint 565: /* skip empty Constructs (placeholders) and comments */
566: while (child &&
567: (elType.ElTypeNum == MathML_EL_Construct ||
568: elType.ElTypeNum == MathML_EL_XMLcomment) &&
569: !strcmp (TtaGetSSchemaName (elType.ElSSchema), "MathML"))
1.152 quint 570: {
1.162 quint 571: TtaNextSibling (&child);
572: if (child)
573: elType = TtaGetElementType (child);
1.152 quint 574: }
1.98 cvs 575: sibling = child;
576: TtaNextSibling (&sibling);
1.152 quint 577: if (sibling)
578: /* there are other children */
579: {
580: siblingType = TtaGetElementType (sibling);
1.162 quint 581: while (sibling &&
582: (siblingType.ElTypeNum == MathML_EL_Construct ||
583: siblingType.ElTypeNum == MathML_EL_XMLcomment) &&
584: !strcmp (TtaGetSSchemaName (siblingType.ElSSchema), "MathML"))
585: /* its an empty construct (placeholder) or a comment, skip it*/
586: {
587: TtaNextSibling (&sibling);
588: if (sibling)
589: siblingType = TtaGetElementType (sibling);
590: }
1.152 quint 591: if (sibling)
1.162 quint 592: /* there are significant siblings */
1.152 quint 593: child = NULL;
594: }
1.98 cvs 595: }
596: }
1.152 quint 597: if (child && (elType.ElTypeNum == MathML_EL_MO ||
598: elType.ElTypeNum == MathML_EL_MOVER ||
599: elType.ElTypeNum == MathML_EL_MUNDER))
600: /* the first child is a MO, a MUNDER or a MOVER */
1.1 cvs 601: {
602: sibling = child;
603: TtaNextSibling (&sibling);
1.152 quint 604: if (sibling)
1.162 quint 605: siblingType = TtaGetElementType (sibling);
606: /* skip empty Constructs (placeholders) and comments */
607: while (sibling &&
608: (siblingType.ElTypeNum == MathML_EL_Construct ||
609: siblingType.ElTypeNum == MathML_EL_XMLcomment) &&
610: !strcmp (TtaGetSSchemaName (siblingType.ElSSchema), "MathML"))
1.152 quint 611: {
1.162 quint 612: TtaNextSibling (&sibling);
613: if (sibling)
614: siblingType = TtaGetElementType (sibling);
1.152 quint 615: }
1.1 cvs 616: if (sibling == NULL)
1.162 quint 617: /* there is no other significant child */
1.1 cvs 618: {
1.152 quint 619: c = EOS;
620: doit = FALSE;
621: attrType.AttrSSchema = elType.ElSSchema;
622: attrType.AttrTypeNum = MathML_ATTR_IntHorizStretch;
623:
624: if (elType.ElTypeNum == MathML_EL_MOVER ||
625: elType.ElTypeNum == MathML_EL_MUNDER)
626: /* check if the UnderOverBase has a IntHorizStretch attribute */
627: {
628: childType.ElTypeNum = MathML_EL_UnderOverBase;
1.172 cheyroul 629: childType.ElSSchema = elType.ElSSchema;
1.152 quint 630: textEl = TtaSearchTypedElement (childType, SearchInTree, child);
631: if (textEl)
632: {
633: if (TtaGetAttribute (textEl, attrType))
634: doit = TRUE;
635: }
636: }
637: else if (elType.ElTypeNum == MathML_EL_MO)
638: {
639: textEl = TtaGetFirstChild (child);
640: childType = TtaGetElementType (textEl);
641: if (childType.ElTypeNum == MathML_EL_TEXT_UNIT)
642: /* the MO child contains a TEXT element */
643: {
644: len = TtaGetElementVolume (textEl);
645: if (len == 1)
1.123 cvs 646: /* the TEXT element contains a single character */
647: {
1.152 quint 648: /* get that character */
649: len = 2;
650: TtaGiveBufferContent (textEl, text, len, &lang);
651: script = TtaGetScript (lang);
652: if (
1.146 quint 653: #ifndef _I18N_
1.152 quint 654: (script == 'L') &&
1.146 quint 655: #endif
1.152 quint 656: (text[0] == '-' || text[0] == '_' ||
657: text[0] == 175))
1.146 quint 658: /* a horizontal line in the middle of the box */
659: c = 'h';
1.152 quint 660: else
661: #ifdef _I18N_
662: if (text[0] == 0x2190)
663: c = 'L'; /* arrow left */
664: else if (text[0] == 0x2192)
665: c = 'R'; /* arrow right */
1.153 quint 666: else if (text[0] == 45) /* - (minus) */
667: /* a horizontal line in the middle of the box */
668: c = 'h';
669: else if (text[0] == 0x2212) /* - (minus) */
1.152 quint 670: /* a horizontal line in the middle of the box */
671: c = 'h';
672: else if (text[0] == 0x0332) /* UnderBar */
673: /* a horizontal line */
674: c = 'h';
675: else if (text[0] == 65079)
676: c = 'o'; /* Over brace */
677: else if (text[0] == 65080)
678: c = 'u'; /* Under brace */
1.146 quint 679: #else
680: if (script == 'G')
681: /* a single Symbol character */
682: {
683: if (text[0] == 172)
684: c = 'L'; /* arrow left */
685: else if (text[0] == 174)
686: c = 'R'; /* arrow right */
687: else if (text[0] == 45) /* - (minus) */
688: /* a horizontal line in the middle of the box */
689: c = 'h';
690: else if (text[0] == 132)
691: c = 'o'; /* Over brace */
692: else if (text[0] == 133)
693: c = 'u'; /* Under brace */
694: }
695: #endif
1.152 quint 696: if (c != EOS)
697: doit = TRUE;
1.123 cvs 698: }
1.152 quint 699: }
700: }
701: if (doit)
702: {
703: /* attach a IntHorizStretch attribute to the element
704: (UnderOverBase, Underscript, or Overscript) */
705: attr = TtaNewAttribute (attrType);
706: TtaAttachAttribute (el, attr, doc);
707: TtaSetAttributeValue (attr, MathML_ATTR_IntHorizStretch_VAL_yes_, el, doc);
708: attr = TtaNewAttribute (attrType);
709: TtaAttachAttribute (child, attr, doc);
710: TtaSetAttributeValue (attr, MathML_ATTR_IntHorizStretch_VAL_yes_, child, doc);
711: }
712: if (c != EOS)
713: {
714: /* replace the TEXT element by a Thot SYMBOL element */
715: childType.ElTypeNum = MathML_EL_SYMBOL_UNIT;
716: symbolEl = TtaNewElement (doc, childType);
717: TtaInsertSibling (symbolEl, textEl, FALSE, doc);
718: if (selEl != NULL)
719: if (*selEl == textEl)
720: *selEl = symbolEl;
721: TtaDeleteTree (textEl, doc);
722: if (c != EOS)
723: TtaSetGraphicsShape (symbolEl, c, doc);
724: }
1.1 cvs 725: }
726: }
727: }
728: }
1.162 quint 729:
1.1 cvs 730: /*----------------------------------------------------------------------
1.22 cvs 731: SetIntHorizStretchAttr
1.1 cvs 732:
1.152 quint 733: Put a IntHorizStretch attribute on all children of element el that
1.1 cvs 734: contain only a MO element that is a stretchable symbol.
735: -----------------------------------------------------------------------*/
1.22 cvs 736: static void SetIntHorizStretchAttr (Element el, Document doc)
1.1 cvs 737: {
738: Element child;
739:
740: if (el == NULL)
741: return;
742: child = TtaGetFirstChild (el);
743: while (child != NULL)
744: {
1.22 cvs 745: SetSingleIntHorizStretchAttr (child, doc, NULL);
1.1 cvs 746: TtaNextSibling (&child);
747: }
748: }
749:
750: /*----------------------------------------------------------------------
1.22 cvs 751: SetIntVertStretchAttr
1.1 cvs 752:
1.22 cvs 753: Put a IntVertStretch attribute on element el if its base element
1.1 cvs 754: (Base for a MSUBSUP, MSUP or MSUB; UnderOverBase for a MUNDEROVER,
755: a MUNDER of a MOVER) contains only a MO element that is a vertically
1.162 quint 756: stretchable symbol (integral, vertical arrow, etc).
1.1 cvs 757: -----------------------------------------------------------------------*/
1.22 cvs 758: void SetIntVertStretchAttr (Element el, Document doc, int base, Element* selEl)
1.1 cvs 759: {
1.132 cvs 760: Element child, sibling, textEl, symbolEl, parent, operator, next;
1.1 cvs 761: ElementType elType;
762: Attribute attr;
763: AttributeType attrType;
1.131 cvs 764: SSchema MathMLSSchema;
1.128 vatton 765: Language lang;
1.143 vatton 766: char script;
1.131 cvs 767: #define buflen 50
768: CHAR_T text[buflen];
1.49 cvs 769: unsigned char c;
1.131 cvs 770: int len, i;
1.162 quint 771: ThotBool inbase, stretchable;
1.1 cvs 772:
773: if (el == NULL)
1.131 cvs 774: return;
1.1 cvs 775: operator = NULL;
1.131 cvs 776: inbase = FALSE;
777: MathMLSSchema = TtaGetElementType(el).ElSSchema;
1.154 vatton 778: symbolEl = parent = NULL;
1.1 cvs 779: if (base == 0)
1.131 cvs 780: /* it's a MO */
781: {
782: parent = TtaGetParent (el);
783: if (parent != NULL)
1.1 cvs 784: {
1.131 cvs 785: /* don't process the mo if it is within a base. It will be processed
786: when the enclosing construct is processed (see below) */
787: elType = TtaGetElementType (parent);
788: if (elType.ElSSchema != MathMLSSchema ||
789: (elType.ElTypeNum != MathML_EL_Base &&
790: elType.ElTypeNum != MathML_EL_UnderOverBase &&
791: elType.ElTypeNum != MathML_EL_MSUBSUP &&
792: elType.ElTypeNum != MathML_EL_MSUB &&
793: elType.ElTypeNum != MathML_EL_MSUP &&
794: elType.ElTypeNum != MathML_EL_MUNDEROVER &&
795: elType.ElTypeNum != MathML_EL_MUNDER &&
1.162 quint 796: elType.ElTypeNum != MathML_EL_MUNDEROVER &&
797: elType.ElTypeNum != MathML_EL_MTD))
1.131 cvs 798: operator = el;
1.1 cvs 799: }
1.131 cvs 800: }
1.1 cvs 801: else
1.131 cvs 802: /* it's not a MO */
803: {
804: /* search the Base or UnderOverBase child */
805: child = TtaGetFirstChild (el);
806: if (child != NULL)
1.1 cvs 807: {
1.131 cvs 808: elType = TtaGetElementType (child);
1.162 quint 809: /* skip empty Constructs (placeholders) and comments */
810: while (child &&
811: (elType.ElTypeNum == MathML_EL_Construct ||
812: elType.ElTypeNum == MathML_EL_XMLcomment) &&
813: elType.ElSSchema == MathMLSSchema)
814: {
815: TtaNextSibling (&child);
816: if (child)
817: elType = TtaGetElementType (child);
818: }
819:
1.131 cvs 820: if (elType.ElTypeNum == base && elType.ElSSchema == MathMLSSchema)
821: /* the first child is a Base or UnderOverBase */
822: {
823: child = TtaGetFirstChild (child);
824: if (child != NULL)
825: {
826: elType = TtaGetElementType (child);
1.162 quint 827: /* skip empty Constructs (placeholders) and comments */
828: while (child &&
829: (elType.ElTypeNum == MathML_EL_Construct ||
830: elType.ElTypeNum == MathML_EL_XMLcomment) &&
831: elType.ElSSchema == MathMLSSchema)
832: {
833: TtaNextSibling (&child);
834: if (child)
835: elType = TtaGetElementType (child);
836: }
837:
1.131 cvs 838: if (elType.ElTypeNum == MathML_EL_MO &&
839: elType.ElSSchema == MathMLSSchema)
1.162 quint 840: /* its first significant child is a MO */
1.131 cvs 841: {
842: sibling = child;
843: TtaNextSibling (&sibling);
1.162 quint 844: /* skip empty Constructs (placeholders) and comments */
845: while (sibling &&
846: (elType.ElTypeNum == MathML_EL_Construct ||
847: elType.ElTypeNum == MathML_EL_XMLcomment) &&
848: elType.ElSSchema == MathMLSSchema)
849: {
850: TtaNextSibling (&sibling);
851: if (sibling)
852: elType = TtaGetElementType (sibling);
853: }
854:
1.131 cvs 855: if (sibling == NULL)
1.162 quint 856: /* there is no other significant child */
1.131 cvs 857: {
858: operator = child;
859: if (base == MathML_EL_Base ||
860: base == MathML_EL_UnderOverBase)
861: {
862: parent = el;
863: inbase = TRUE;
864: }
865: }
866: }
867: }
868: }
1.1 cvs 869: }
1.131 cvs 870: }
871: if (operator)
872: {
873: textEl = TtaGetFirstChild (operator);
874: if (textEl != NULL)
1.84 cvs 875: {
1.131 cvs 876: elType = TtaGetElementType (textEl);
877: if (elType.ElTypeNum == MathML_EL_TEXT_UNIT)
878: {
1.146 quint 879: len = TtaGetElementVolume (textEl);
1.131 cvs 880: if (len >= 1)
881: {
882: if (len >= buflen)
883: len = buflen-1;
1.146 quint 884: TtaGiveBufferContent (textEl, text, len+1, &lang);
1.143 vatton 885: script = TtaGetScript (lang);
1.146 quint 886: #ifdef _I18N_
1.162 quint 887: stretchable = TRUE;
1.146 quint 888: for (i = 0; i < len; i++)
1.162 quint 889: if ((text[i] < 0x222B || text[i] > 0x2233) &&
890: text[i] != 0x2191 && text[i] != 0x2193 &&
891: text[i] != 0x2195 &&
892: text[i] != 0x21D1 && text[i] != 0x21D3 &&
893: text[i] != 0x21D5)
1.146 quint 894: /* accept only symbols like simple integral, double or
1.162 quint 895: triple integral, contour integral, etc. or vertical
896: arrows (add more arrows *****) */
897: stretchable = FALSE;
1.146 quint 898: #else
1.162 quint 899: stretchable = FALSE;
1.143 vatton 900: if (script == 'G')
1.131 cvs 901: /* Adobe Symbol character set */
1.55 cvs 902: {
1.162 quint 903: stretchable = TRUE;
1.131 cvs 904: /* check all characters in this TEXT element */
905: for (i = 0; i < len; i++)
1.162 quint 906: if (text[i] != 242 && /* integral */
907: text[i] != 173 && text[i] != 175 && /* arrows */
908: text[i] != 221 && text[i] != 223) /* double arrows */
1.131 cvs 909: /**** accept also other symbols like double or triple
910: integral, contour integral, etc. ****/
1.162 quint 911: stretchable = FALSE;
1.146 quint 912: }
913: #endif
1.162 quint 914: if (stretchable)
915: /* the operator contains only stretchable symbols */
1.146 quint 916: {
917: /* attach a IntVertStretch attribute */
918: attrType.AttrSSchema = MathMLSSchema;
919: attrType.AttrTypeNum = MathML_ATTR_IntVertStretch;
920: attr = TtaNewAttribute (attrType);
921: TtaAttachAttribute (el, attr, doc);
922: TtaSetAttributeValue (attr,
1.131 cvs 923: MathML_ATTR_IntVertStretch_VAL_yes_,
924: el, doc);
1.146 quint 925: TtaRegisterAttributeCreate (attr, el, doc);
926:
1.162 quint 927: /* replace the stretchable characters by a Thot SYMBOL
1.146 quint 928: element. If there are several such characters in
1.162 quint 929: the mo (multiple integral for instance), replace
930: them too. */
1.146 quint 931: do
932: {
933: /* replace the TEXT element by a Thot SYMBOL */
1.162 quint 934: elType.ElSSchema = MathMLSSchema;
1.146 quint 935: elType.ElTypeNum = MathML_EL_SYMBOL_UNIT;
936: for (i = 0; i < len; i++)
1.162 quint 937: {
938: if (selEl != NULL)
939: if (*selEl == textEl)
940: *selEl = symbolEl;
1.173 ! vatton 941: c = text[i];
1.146 quint 942: #ifdef _I18N_
1.162 quint 943: if (text[i] == 0x222B)
944: c = 'i';
945: else if (text[i] == 0x222C)
946: c = 'd';
947: else if (text[i] == 0x222D)
948: c = 't';
949: else if (text[i] == 0x222E)
950: c = 'c';
951: else if (text[i] == 0x2191)
952: c = '^';
953: else if (text[i] == 0x2193)
954: c = 'V';
1.173 ! vatton 955: #else /*_I18N_ */
1.162 quint 956: if (text[i] == 242)
957: c = 'i';
958: else if (text[i] == 173)
959: c = '<';
960: else if (text[i] == 175)
961: c = '>';
1.173 ! vatton 962: #endif /*_I18N_ */
1.162 quint 963: symbolEl = TtaNewElement (doc, elType);
964: TtaInsertSibling (symbolEl, textEl, TRUE,doc);
965: TtaSetGraphicsShape (symbolEl, c, doc);
966: TtaRegisterElementCreate (symbolEl, doc);
967: }
1.146 quint 968: TtaRegisterElementDelete (textEl, doc);
969: TtaDeleteTree (textEl, doc);
970: /* is there an other text element after the
1.162 quint 971: stretchable symbol? */
1.146 quint 972: textEl = symbolEl; TtaNextSibling (&textEl);
973: if (textEl)
974: {
975: elType = TtaGetElementType (textEl);
976: if (elType.ElTypeNum != MathML_EL_TEXT_UNIT)
977: textEl = NULL;
978: else
979: /* there is another text element.
1.162 quint 980: Is it a single stretchable symbol? */
1.146 quint 981: {
982: len = TtaGetElementVolume (textEl);
983: if (len < 1)
984: /* not a single character */
985: textEl = NULL;
986: else
987: {
988: if (len >= buflen)
989: len = buflen-1;
990: TtaGiveBufferContent (textEl, text,
991: len+1, &lang);
992: script = TtaGetScript (lang);
993: #ifdef _I18N_
1.164 quint 994: if (text[0] != 0x222B &&
995: text[0] != 0x222C &&
996: text[0] != 0x222D &&
997: text[0] != 0x222E &&
998: text[0] != 0x2191 &&
999: text[0] != 0x2193)
1.173 ! vatton 1000: #else /*_I18N_ */
1.162 quint 1001: if (script != 'G' ||
1.164 quint 1002: (text[0] != 242 && text[0] != 173 &&
1003: text[0] != 175))
1.173 ! vatton 1004: #endif /*_I18N_ */
1.162 quint 1005: /* not a stretchable symbol */
1.146 quint 1006: textEl = NULL;
1007: }
1008: }
1009: }
1010: }
1011: while (textEl);
1012:
1013: if (inbase)
1014: /* it's within a Base or UnderOverBase element */
1015: {
1016: sibling = parent;
1017: TtaNextSibling (&sibling);
1018: if (sibling)
1019: /* the msubsup of munderover element has a next
1020: sibling */
1021: {
1022: elType = TtaGetElementType (sibling);
1023: if (elType.ElTypeNum == MathML_EL_Construct &&
1024: elType.ElSSchema == MathMLSSchema)
1025: /* the next sibling is a Construct */
1026: {
1027: next = sibling;
1028: TtaNextSibling (&next);
1029: if (!next)
1030: /* there is no other sibling after the
1031: Construct. Change it into Construct1*/
1032: {
1033: TtaRegisterElementDelete (sibling, doc);
1034: TtaRemoveTree (sibling, doc);
1035: ChangeElementType (sibling,
1.132 cvs 1036: MathML_EL_Construct1);
1.146 quint 1037: TtaInsertSibling (sibling, parent,
1038: FALSE, doc);
1039: TtaRegisterElementCreate (sibling, doc);
1040: /* force the msubsup element to be
1041: reformatted and to take into account
1042: its new next sibling */
1043: TtaRemoveTree (parent, doc);
1044: TtaInsertSibling (parent, sibling, TRUE,
1045: doc);
1046: }
1047: }
1048: }
1049: }
1.55 cvs 1050: }
1.131 cvs 1051: }
1052: }
1.84 cvs 1053: }
1.131 cvs 1054: }
1.1 cvs 1055: }
1056:
1057: /*----------------------------------------------------------------------
1.169 quint 1058: SetIntMovelimitsAttr
1059: Put a IntMovelimits attribute on element el (which is a munder, mover
1060: or munderover) if the current value of IntDisplaystyle is false and
1061: if el contains a MO element that allows limits to be moved.
1062: -----------------------------------------------------------------------*/
1063: void SetIntMovelimitsAttr (Element el, Document doc)
1064: {
1065: Element ancestor, child, base, operator, textEl;
1066: int value, len;
1067: ElementType elType;
1068: AttributeType attrType;
1069: Attribute attr;
1070: Language lang;
1071: CHAR_T text[10];
1072: char buffer[20];
1073: ThotBool movable;
1074: #ifndef _I18N_
1075: char script;
1076: #endif
1077:
1078: if (el == NULL || doc == 0)
1079: return;
1080: movable = FALSE;
1081:
1082: /* first look for an IntDisplaystyle attribute on an ancestor */
1083: elType = TtaGetElementType (el);
1084: attrType.AttrSSchema = elType.ElSSchema;
1085: attrType.AttrTypeNum = MathML_ATTR_IntDisplaystyle;
1086: ancestor = el;
1087: do
1088: {
1089: attr = TtaGetAttribute (ancestor, attrType);
1090: if (!attr)
1091: ancestor = TtaGetParent(ancestor);
1092: }
1093: while (!attr && ancestor);
1094: if (attr)
1095: /* there is an ancestor with an attribute IntDisplaystyle */
1096: {
1097: value = TtaGetAttributeValue (attr);
1098: if (value == MathML_ATTR_IntDisplaystyle_VAL_false)
1099: /* an ancestor has an attribute IntDisplaystyle = false */
1100: {
1101: /* Check the operator within the base */
1102: child = TtaGetFirstChild (el);
1103: base = NULL;
1104: do
1105: {
1106: elType = TtaGetElementType (child);
1107: if (elType.ElTypeNum == MathML_EL_UnderOverBase)
1108: base = child;
1109: else
1110: TtaNextSibling (&child);
1111: }
1112: while (child && !base);
1113: if (base)
1114: {
1115: child = TtaGetFirstChild (base);
1116: operator = NULL;
1117: do
1118: {
1119: elType = TtaGetElementType (child);
1120: if (elType.ElTypeNum == MathML_EL_MO)
1121: operator = child;
1122: else
1123: TtaNextSibling (&child);
1124: }
1125: while (child && !operator);
1126: if (operator)
1127: {
1128: attrType.AttrTypeNum = MathML_ATTR_movablelimits;
1129: attr = TtaGetAttribute (operator, attrType);
1130: if (attr)
1131: /* the operator has an attribute movablelimits */
1132: {
1133: value = TtaGetAttributeValue (attr);
1134: if (value == MathML_ATTR_movablelimits_VAL_true)
1135: movable = TRUE;
1136: }
1137: else
1138: /* no attribute movablelimits. Look at the content of the
1139: operator element */
1140: {
1141: textEl = TtaGetFirstChild (operator);
1142: if (textEl)
1143: {
1144: elType = TtaGetElementType (textEl);
1145: if (elType.ElTypeNum == MathML_EL_TEXT_UNIT)
1146: {
1147: len = TtaGetElementVolume (textEl);
1148: if (len == 3)
1149: {
1150: TtaGiveTextContent (textEl, buffer, &len, &lang);
1151: #ifndef _I18N_
1152: script = TtaGetScript (lang);
1153: if (script == 'L')
1154: #endif
1155: {
1156: if (!strcmp (buffer, "lim") ||
1157: !strcmp (buffer, "max") ||
1158: !strcmp (buffer, "min"))
1159: movable = TRUE;
1160: }
1161: }
1162: else if (len == 1)
1163: {
1164: TtaGiveBufferContent (textEl, text, len+1, &lang);
1165: #ifdef _I18N_
1166: if (text[0] == 0x22C1 /* Vee */ ||
1167: text[0] == 0x2296 /* CircleMinus */ ||
1168: text[0] == 0x2295 /* CirclePlus */ ||
1169: text[0] == 0x2211 /* Sum */ ||
1170: text[0] == 0x22C3 /* Union */ ||
1171: text[0] == 0x228E /* UnionPlus */ ||
1172: text[0] == 0x22C0 /* Wedge */ ||
1173: text[0] == 0x2297 /* CircleTimes */ ||
1174: text[0] == 0x2210 /* Coproduct */ ||
1175: text[0] == 0x220F /* Product */ ||
1176: text[0] == 0x22C2 /* Intersection */ ||
1177: text[0] == 0x2299 /* CircleDot */ )
1178: movable = TRUE;
1179: #else
1180: script = TtaGetScript (lang);
1181: if (script == 'G')
1182: /* Adobe Symbol character set */
1183: if (text[0] == 197 || text[0] == 229 ||
1184: text[0] == 200 || text[0] == 196 ||
1185: text[0] == 213 || text[0] == 199)
1186: movable = TRUE;
1187: #endif
1188: }
1189: }
1190: }
1191: }
1192: }
1193: }
1194: }
1195: }
1196:
1197: attrType.AttrTypeNum = MathML_ATTR_IntMovelimits;
1198: attr = TtaGetAttribute (el, attrType);
1199: if (movable)
1200: {
1201: if (!attr)
1202: {
1203: attr = TtaNewAttribute (attrType);
1204: TtaAttachAttribute (el, attr, doc);
1205: }
1206: TtaSetAttributeValue (attr, MathML_ATTR_IntMovelimits_VAL_yes_, el, doc);
1207: }
1208: else if (attr)
1209: TtaRemoveAttribute (el, attr, doc);
1210: }
1211:
1212: /*----------------------------------------------------------------------
1.22 cvs 1213: SetIntPlaceholderAttr
1.1 cvs 1214:
1.22 cvs 1215: Put a IntPlaceholder attribute on all Construct elements in the
1.1 cvs 1216: subtree of root el.
1217: -----------------------------------------------------------------------*/
1.22 cvs 1218: static void SetIntPlaceholderAttr (Element el, Document doc)
1.1 cvs 1219: {
1220: Element child;
1221: ElementType elType;
1222: Attribute attr;
1223: AttributeType attrType;
1224:
1225: if (el == NULL)
1226: return;
1227: elType = TtaGetElementType (el);
1228: if (elType.ElTypeNum == MathML_EL_Construct &&
1.2 cvs 1229: elType.ElSSchema == GetMathMLSSchema (doc))
1.1 cvs 1230: {
1231: attrType.AttrSSchema = elType.ElSSchema;
1.22 cvs 1232: attrType.AttrTypeNum = MathML_ATTR_IntPlaceholder;
1.1 cvs 1233: attr = TtaNewAttribute (attrType);
1234: TtaAttachAttribute (el, attr, doc);
1.22 cvs 1235: TtaSetAttributeValue (attr, MathML_ATTR_IntPlaceholder_VAL_yes_, el, doc);
1.1 cvs 1236: }
1237: else
1238: {
1239: child = TtaGetFirstChild (el);
1240: while (child != NULL)
1241: {
1.22 cvs 1242: SetIntPlaceholderAttr (child, doc);
1.1 cvs 1243: TtaNextSibling (&child);
1244: }
1245: }
1246: }
1247:
1248: /*----------------------------------------------------------------------
1249: BuildMultiscript
1250:
1251: The content of a MMULTISCRIPT element has been created following
1252: the original MathML structure. Create all Thot elements defined
1253: in the MathML S schema.
1254: -----------------------------------------------------------------------*/
1255: static void BuildMultiscript (Element elMMULTISCRIPT, Document doc)
1256: {
1257: Element elem, base, next, group, pair, script, prevPair, prevScript;
1258: ElementType elType, elTypeGroup, elTypePair, elTypeScript;
1.2 cvs 1259: SSchema MathMLSSchema;
1.1 cvs 1260: base = NULL;
1261: group = NULL;
1262: prevPair = NULL;
1263: prevScript = NULL;
1264:
1.2 cvs 1265: MathMLSSchema = GetMathMLSSchema (doc);
1.1 cvs 1266: elTypeGroup.ElSSchema = MathMLSSchema;
1267: elTypePair.ElSSchema = MathMLSSchema;
1268: elTypeScript.ElSSchema = MathMLSSchema;
1269:
1270: /* process all children of the MMULTISCRIPT element */
1271: elem = TtaGetFirstChild (elMMULTISCRIPT);
1272: while (elem != NULL)
1273: {
1274: /* remember the element to be processed after the current one */
1275: next = elem;
1276: TtaNextSibling (&next);
1277:
1278: /* remove the current element from the tree */
1279: TtaRemoveTree (elem, doc);
1280:
1281: if (base == NULL)
1282: /* the current element is the first child of the MMULTISCRIPT
1283: element */
1284: {
1285: /* Create a MultiscriptBase element as the first child of
1286: MMULTISCRIPT and move the current element as the first child
1287: of the MultiscriptBase element */
1288: elTypeGroup.ElTypeNum = MathML_EL_MultiscriptBase;
1289: base = TtaNewElement (doc, elTypeGroup);
1290: TtaInsertFirstChild (&base, elMMULTISCRIPT, doc);
1291: TtaInsertFirstChild (&elem, base, doc);
1292: }
1293: else
1294: /* the current element is a subscript or a superscript */
1295: {
1296: if (group == NULL)
1297: /* there is no PostscriptPairs element. Create one */
1298: {
1299: elTypeGroup.ElTypeNum = MathML_EL_PostscriptPairs;
1300: group = TtaNewElement (doc, elTypeGroup);
1301: TtaInsertSibling (group, base, FALSE, doc);
1302: elTypePair.ElTypeNum = MathML_EL_PostscriptPair;
1303: /* create a first and a last PostscriptPair as placeholders */
1.47 cvs 1304: pair = TtaNewTree (doc, elTypePair, "");
1.1 cvs 1305: TtaInsertFirstChild (&pair, group, doc);
1.22 cvs 1306: SetIntPlaceholderAttr (pair, doc);
1.1 cvs 1307: prevPair = pair;
1.47 cvs 1308: pair = TtaNewTree (doc, elTypePair, "");
1.1 cvs 1309: TtaInsertSibling (pair, prevPair, FALSE, doc);
1.22 cvs 1310: SetIntPlaceholderAttr (pair, doc);
1.1 cvs 1311: prevScript = NULL;
1312: }
1313: if (prevScript == NULL)
1314: /* the current element is the first subscript or superscript
1315: in a pair */
1316: {
1317: /* create a PostscriptPair or PrescriptPair element */
1318: pair = TtaNewElement (doc, elTypePair);
1319: if (prevPair == NULL)
1320: TtaInsertFirstChild (&pair, group, doc);
1321: else
1322: TtaInsertSibling (pair, prevPair, FALSE, doc);
1323: prevPair = pair;
1324: /* create a MSubscript element */
1325: elTypeScript.ElTypeNum = MathML_EL_MSubscript;
1326: script = TtaNewElement (doc, elTypeScript);
1327: TtaInsertFirstChild (&script, pair, doc);
1328: prevScript = script;
1329: }
1330: else
1331: /* the current element is a superscript in a pair */
1332: {
1333: /* create a MSuperscript element */
1334: elTypeScript.ElTypeNum = MathML_EL_MSuperscript;
1335: script = TtaNewElement (doc, elTypeScript);
1336: /* insert it as a sibling of the previous MSubscript element */
1337: TtaInsertSibling (script, prevScript, FALSE, doc);
1338: prevScript = NULL;
1339: }
1340: /* insert the current element as a child of the new MSuperscript or
1341: MSubscript element */
1342: TtaInsertFirstChild (&elem, script, doc);
1.22 cvs 1343: SetIntPlaceholderAttr (elem, doc);
1.1 cvs 1344: }
1345:
1346: CreatePlaceholders (elem, doc);
1347:
1348: /* get next child of the MMULTISCRIPT element */
1349: elem = next;
1350: if (elem != NULL)
1351: {
1352: elType = TtaGetElementType (elem);
1353: if (elType.ElSSchema == MathMLSSchema &&
1354: elType.ElTypeNum == MathML_EL_PrescriptPairs)
1355: /* the next element is a PrescriptPairs */
1356: {
1357: /* if there there is no PostscriptPairs element, create one as a
1358: placeholder */
1359: if (elTypeGroup.ElTypeNum != MathML_EL_PostscriptPairs)
1360: {
1361: elTypeGroup.ElTypeNum = MathML_EL_PostscriptPairs;
1.47 cvs 1362: group = TtaNewTree (doc, elTypeGroup, "");
1.1 cvs 1363: TtaInsertSibling (group, elem, TRUE, doc);
1.22 cvs 1364: SetIntPlaceholderAttr (group, doc);
1.1 cvs 1365: }
1366: /* the following elements will be interpreted as sub- superscripts
1367: in PrescriptPair elements, wich will be children of this
1368: PrescriptPairs element */
1369: elTypeGroup.ElTypeNum = MathML_EL_PrescriptPairs;
1370: elTypePair.ElTypeNum = MathML_EL_PrescriptPair;
1371: group = elem;
1372: /* create a first and a last PostscriptPair as placeholders */
1.47 cvs 1373: pair = TtaNewTree (doc, elTypePair, "");
1.1 cvs 1374: TtaInsertFirstChild (&pair, group, doc);
1.22 cvs 1375: SetIntPlaceholderAttr (pair, doc);
1.1 cvs 1376: prevPair = pair;
1.47 cvs 1377: pair = TtaNewTree (doc, elTypePair, "");
1.1 cvs 1378: TtaInsertSibling (pair, prevPair, FALSE, doc);
1.22 cvs 1379: SetIntPlaceholderAttr (pair, doc);
1.1 cvs 1380: prevScript = NULL;
1381: TtaNextSibling (&elem);
1382: }
1383: }
1384: }
1385: /* all children of element MMULTISCRIPTS have been processed */
1386: /* if the last group processed is not a PrescriptPairs element,
1387: create one as a placeholder */
1388: if (elTypeGroup.ElTypeNum != MathML_EL_PrescriptPairs && base != NULL)
1389: {
1390: elTypeGroup.ElTypeNum = MathML_EL_PrescriptPairs;
1.47 cvs 1391: elem = TtaNewTree (doc, elTypeGroup, "");
1.1 cvs 1392: if (group == NULL)
1393: group = base;
1394: TtaInsertSibling (elem, group, TRUE, doc);
1.22 cvs 1395: SetIntPlaceholderAttr (elem, doc);
1.1 cvs 1396: }
1397: }
1398:
1.39 cvs 1399: /*----------------------------------------------------------------------
1400: CreateWrapper
1401:
1402: Create an element of type wrapperType as a child of element el and
1403: move all chidren of element el within the new element.
1404: -----------------------------------------------------------------------*/
1405: static void CreateWrapper (Element el, int wrapperType, Document doc)
1406: {
1407: Element wrapper, child, prevChild, nextChild;
1408: ElementType elType;
1409:
1410: child = TtaGetFirstChild (el);
1411: elType.ElSSchema = GetMathMLSSchema (doc);
1412: elType.ElTypeNum = wrapperType;
1413: wrapper = TtaNewElement (doc, elType);
1414: TtaInsertFirstChild (&wrapper, el, doc);
1415: prevChild = NULL;
1416: while (child)
1417: {
1418: nextChild = child;
1419: TtaNextSibling (&nextChild);
1420: TtaRemoveTree (child, doc);
1421: if (prevChild == NULL)
1422: TtaInsertFirstChild (&child, wrapper, doc);
1423: else
1424: TtaInsertSibling (child, prevChild, FALSE, doc);
1425: prevChild = child;
1426: child = nextChild;
1427: }
1428: }
1.5 cvs 1429:
1430: /*----------------------------------------------------------------------
1431: CheckMTable
1432:
1433: The content of a MTABLE element has been created following
1434: the original MathML structure. Create all Thot elements defined
1435: in the MathML S schema.
1.64 cvs 1436: If placeholder, associate an attribute IntPlaceholder with all
1.103 cvs 1437: cells generated in the MathML table.
1.5 cvs 1438: -----------------------------------------------------------------------*/
1.64 cvs 1439: void CheckMTable (Element elMTABLE, Document doc, ThotBool placeholder)
1.5 cvs 1440: {
1441: ElementType elType;
1442: Element MTableHead, MTableBody, row, nextRow, el, prevRow, cell,
1.103 cvs 1443: nextCell, newMTD, firstColHead, label;
1.5 cvs 1444: SSchema MathMLSSchema;
1445:
1446: MathMLSSchema = GetMathMLSSchema (doc);
1447: row = TtaGetFirstChild (elMTABLE);
1448:
1449: /* create a MTable_head as the first child of element MTABLE */
1450: elType.ElSSchema = MathMLSSchema;
1451: elType.ElTypeNum = MathML_EL_MTable_head;
1452: MTableHead = TtaNewElement (doc, elType);
1453: TtaInsertFirstChild (&MTableHead, elMTABLE, doc);
1454: elType.ElTypeNum = MathML_EL_MColumn_head;
1.47 cvs 1455: firstColHead = TtaNewTree (doc, elType, "");
1.5 cvs 1456: TtaInsertFirstChild (&firstColHead, MTableHead, doc);
1457:
1458: /* create a MTable_body */
1459: elType.ElTypeNum = MathML_EL_MTable_body;
1460: MTableBody = TtaNewElement (doc, elType);
1461: TtaInsertSibling (MTableBody, MTableHead, FALSE, doc);
1462:
1463: /* move all children of element MTABLE into the new MTable_body element
1.103 cvs 1464: and wrap each non-MTR element in a MTR, except comments */
1.5 cvs 1465: prevRow = NULL;
1466: while (row)
1467: {
1468: nextRow = row;
1469: TtaNextSibling (&nextRow);
1470: elType = TtaGetElementType (row);
1471: TtaRemoveTree (row, doc);
1472: if (TtaSameSSchemas (elType.ElSSchema, MathMLSSchema) &&
1473: (elType.ElTypeNum == MathML_EL_XMLcomment ||
1.101 cvs 1474: elType.ElTypeNum == MathML_EL_MTR ||
1475: elType.ElTypeNum == MathML_EL_MLABELEDTR))
1.5 cvs 1476: {
1477: if (prevRow == NULL)
1478: TtaInsertFirstChild (&row, MTableBody, doc);
1479: else
1480: TtaInsertSibling (row, prevRow, FALSE, doc);
1481: prevRow = row;
1.101 cvs 1482: if (elType.ElTypeNum == MathML_EL_MTR ||
1483: elType.ElTypeNum == MathML_EL_MLABELEDTR)
1.103 cvs 1484: {
1.5 cvs 1485: cell = TtaGetFirstChild (row);
1.103 cvs 1486: if (elType.ElTypeNum == MathML_EL_MLABELEDTR)
1487: /* skip the first significant child of the mlabeledtr element */
1488: {
1489: /* skip comments first */
1490: do
1491: {
1492: elType = TtaGetElementType (cell);
1493: if (TtaSameSSchemas (elType.ElSSchema, MathMLSSchema) &&
1494: elType.ElTypeNum == MathML_EL_XMLcomment)
1495: TtaNextSibling (&cell);
1496: }
1497: while (cell && elType.ElTypeNum == MathML_EL_XMLcomment);
1498: /* skip the first element after the comments: it's a label */
1499: if (cell)
1500: {
1.105 cvs 1501: /* if it's a MTD change its type into LabelCell */
1502: if (elType.ElTypeNum == MathML_EL_MTD &&
1503: elType.ElSSchema == MathMLSSchema)
1504: ChangeElementType (cell, MathML_EL_LabelCell);
1.103 cvs 1505: /* wrap this element in a RowLabel element */
1.105 cvs 1506: /* This will allow the P schema to specify the horizontal
1507: position of the label */
1.103 cvs 1508: elType.ElSSchema = MathMLSSchema;
1509: elType.ElTypeNum = MathML_EL_RowLabel;
1510: label = TtaNewElement (doc, elType);
1511: TtaInsertSibling (label, cell, TRUE, doc);
1512: TtaRemoveTree (cell, doc);
1513: TtaInsertFirstChild (&cell, label, doc);
1514: cell = label;
1515: TtaNextSibling (&cell);
1516: }
1517: }
1518: }
1.5 cvs 1519: else
1520: cell = NULL;
1521: }
1522: else
1.103 cvs 1523: /* this child is not a MTR, MLABELEDTR, or a comment.
1524: In MathML 2.0, this in an error, but we try to recover by
1525: creating a MTR element */
1.5 cvs 1526: {
1527: elType.ElSSchema = MathMLSSchema;
1528: elType.ElTypeNum = MathML_EL_MTR;
1529: el = TtaNewElement (doc, elType);
1530: if (prevRow == NULL)
1531: TtaInsertFirstChild (&el, MTableBody, doc);
1532: else
1533: TtaInsertSibling (el, prevRow, FALSE, doc);
1534: TtaInsertFirstChild (&row, el, doc);
1535: cell = row;
1536: prevRow = el;
1537: }
1538: while (cell)
1539: /* check all children of the current MTR element */
1540: {
1541: nextCell = cell;
1542: TtaNextSibling (&nextCell);
1543: elType = TtaGetElementType (cell);
1544: if (!TtaSameSSchemas (elType.ElSSchema, MathMLSSchema) ||
1545: (elType.ElTypeNum != MathML_EL_XMLcomment &&
1546: elType.ElTypeNum != MathML_EL_MTD))
1547: /* this is not a MTD nor a comment, create a wrapping MTD */
1548: {
1549: elType.ElSSchema = MathMLSSchema;
1550: elType.ElTypeNum = MathML_EL_MTD;
1551: newMTD = TtaNewElement (doc, elType);
1552: TtaInsertSibling (newMTD, cell, TRUE, doc);
1553: TtaRemoveTree (cell, doc);
1554: TtaInsertFirstChild (&cell, newMTD, doc);
1555: cell = newMTD;
1556: }
1557: if (elType.ElTypeNum == MathML_EL_MTD)
1558: /* This is a MTD element. Wrap its contents with a CellWrapper */
1.162 quint 1559: {
1560: CreateWrapper (cell, MathML_EL_CellWrapper, doc);
1561: SetIntHorizStretchAttr (cell, doc);
1562: SetIntVertStretchAttr (cell, doc, MathML_EL_CellWrapper, NULL);
1563: }
1.5 cvs 1564: cell = nextCell;
1565: }
1566: row = nextRow;
1567: }
1.107 cvs 1568: CheckAllRows (elMTABLE, doc, placeholder, FALSE);
1.5 cvs 1569: }
1.12 cvs 1570:
1.46 cvs 1571: /*----------------------------------------------------------------------
1.1 cvs 1572: SetFontstyleAttr
1573: The content of a MI element has been created or modified.
1574: Create or change attribute IntFontstyle for that element accordingly.
1575: -----------------------------------------------------------------------*/
1576: void SetFontstyleAttr (Element el, Document doc)
1577: {
1578: ElementType elType;
1.157 quint 1579: AttributeType attrType, attrType1;
1.1 cvs 1580: Attribute attr, IntAttr;
1.157 quint 1581: Element ancestor, textEl;
1.1 cvs 1582: int len;
1.163 quint 1583: Language lang;
1584: #ifndef _I18N_
1585: char script;
1.166 quint 1586: char *value;
1.163 quint 1587: #endif
1.166 quint 1588: CHAR_T text[2];
1.54 cvs 1589: ThotBool italic;
1.1 cvs 1590:
1591: if (el != NULL)
1.142 quint 1592: {
1.157 quint 1593: /* search the (deprecated) fontstyle attribute or the mathvariant
1594: attribute on the element and its ancestors */
1.142 quint 1595: elType = TtaGetElementType (el);
1596: attrType.AttrSSchema = elType.ElSSchema;
1597: attrType.AttrTypeNum = MathML_ATTR_fontstyle;
1.157 quint 1598: attrType1.AttrSSchema = elType.ElSSchema;
1599: attrType1.AttrTypeNum = MathML_ATTR_mathvariant;
1600: ancestor = el;
1601: attr = NULL;
1602: do
1603: {
1604: attr = TtaGetAttribute (ancestor, attrType);
1605: if (!attr)
1606: attr = TtaGetAttribute (ancestor, attrType1);
1607: if (!attr)
1608: {
1609: ancestor = TtaGetParent (ancestor);
1610: if (ancestor)
1611: {
1612: elType = TtaGetElementType (ancestor);
1613: if (elType.ElSSchema != attrType.AttrSSchema)
1614: /* this ancestor is not in the MathML namespace */
1615: ancestor = NULL;
1616: }
1617: }
1618: }
1619: while (ancestor && !attr);
1620:
1.142 quint 1621: attrType.AttrTypeNum = MathML_ATTR_IntFontstyle;
1622: IntAttr = TtaGetAttribute (el, attrType);
1623: if (attr != NULL)
1.157 quint 1624: /* there is a fontstyle or mathvariant attribute. Remove the
1625: IntFontstyle internal attribute that is not needed */
1.1 cvs 1626: {
1.142 quint 1627: if (IntAttr != NULL)
1628: TtaRemoveAttribute (el, IntAttr, doc);
1.1 cvs 1629: }
1.142 quint 1630: else
1.157 quint 1631: /* there is no fontstyle or mathvariant attribute. Create an internal
1632: IntFontstyle attribute with a value that depends on the content of
1633: the MI element */
1.1 cvs 1634: {
1.142 quint 1635: /* get content length */
1636: len = TtaGetElementVolume (el);
1637: if (len > 1)
1638: /* put an attribute IntFontstyle = IntNormal */
1639: {
1640: if (IntAttr == NULL)
1641: {
1642: IntAttr = TtaNewAttribute (attrType);
1643: TtaAttachAttribute (el, IntAttr, doc);
1644: }
1645: TtaSetAttributeValue (IntAttr,
1646: MathML_ATTR_IntFontstyle_VAL_IntNormal,
1647: el, doc);
1648: }
1649: else
1650: /* MI contains a single character. Remove attribute IntFontstyle
1651: if it exists, except if it's ImaginaryI, ExponentialE or
1652: DifferentialD */
1653: {
1654: italic = TRUE;
1655: textEl = TtaGetFirstChild (el);
1656: if (textEl != NULL)
1657: {
1658: elType = TtaGetElementType (textEl);
1659: if (elType.ElTypeNum == MathML_EL_MGLYPH)
1660: /* the content of the MI element is a MGLYPH element */
1661: /* check the length if it's alt attribute */
1662: {
1663: /* by default, use normal style */
1664: italic = FALSE;
1665: attrType.AttrTypeNum = MathML_ATTR_alt;
1666: attr = TtaGetAttribute (textEl, attrType);
1667: if (attr)
1668: /* the MGLYPH element has an alt attribute */
1669: {
1670: len = TtaGetTextAttributeLength (attr);
1671: if (len == 1)
1672: italic = TRUE;
1673: }
1674: }
1.163 quint 1675: else if (elType.ElTypeNum == MathML_EL_TEXT_UNIT)
1.142 quint 1676: {
1.166 quint 1677: len = TtaGetElementVolume (textEl);
1.163 quint 1678: if (len == 1)
1.166 quint 1679: /* the TEXT element contains a single character */
1.163 quint 1680: {
1.166 quint 1681: /* get that character */
1682: len = 2;
1683: TtaGiveBufferContent (textEl, text, len, &lang);
1.163 quint 1684: #ifndef _I18N_
1685: script = TtaGetScript (lang);
1686: #endif
1687: if (
1688: #ifndef _I18N_
1689: script == 'L' &&
1690: #endif
1691: text[0] >= '0' && text[0] <= '9')
1.166 quint 1692: /* that's a single digit */
1.163 quint 1693: italic = FALSE;
1.166 quint 1694: else
1695: #ifdef _I18N_
1696: /* is this the Unicode character for DifferentialD,
1697: ExponentialE or ImaginaryI? */
1698: if (text[0] == 0x2146 || text[0] == 0x2147 ||
1699: text[0] == 0x2148)
1700: italic = FALSE;
1701: #else
1.142 quint 1702: {
1.166 quint 1703: /* is there an attribute EntityName on that
1704: character? */
1705: attrType.AttrTypeNum = MathML_ATTR_EntityName;
1706: attr = TtaGetAttribute (textEl, attrType);
1707: if (attr)
1708: {
1709: len = TtaGetTextAttributeLength (attr);
1710: if (len > 0)
1711: {
1712: value = TtaGetMemory (len+1);
1713: TtaGiveTextAttributeValue (attr, value, &len);
1714: if (strcmp (&value[1], "ImaginaryI;") == 0 ||
1715: strcmp (&value[1], "ExponentialE;") == 0 ||
1716: strcmp (&value[1], "DifferentialD;") == 0)
1717: italic = FALSE;
1718: TtaFreeMemory (value);
1719: }
1720: }
1.142 quint 1721: }
1.166 quint 1722: #endif
1.142 quint 1723: }
1724: }
1725: if (italic)
1726: {
1727: if (IntAttr != NULL)
1728: TtaRemoveAttribute (el, IntAttr, doc);
1729: }
1730: else
1731: {
1732: /* put an attribute IntFontstyle = IntNormal */
1733: if (IntAttr == NULL)
1734: {
1735: attrType.AttrTypeNum = MathML_ATTR_IntFontstyle;
1736: IntAttr = TtaNewAttribute (attrType);
1737: TtaAttachAttribute (el, IntAttr, doc);
1738: }
1739: TtaSetAttributeValue (IntAttr,
1740: MathML_ATTR_IntFontstyle_VAL_IntNormal,
1741: el, doc);
1742: }
1743: }
1744: }
1.1 cvs 1745: }
1.142 quint 1746: }
1.1 cvs 1747: }
1748:
1749: /*----------------------------------------------------------------------
1.22 cvs 1750: SetIntAddSpaceAttr
1.1 cvs 1751: The content of a MO element has been created or modified.
1.22 cvs 1752: Create or change attribute IntAddSpace for that element accordingly.
1.1 cvs 1753: -----------------------------------------------------------------------*/
1.22 cvs 1754: void SetIntAddSpaceAttr (Element el, Document doc)
1.1 cvs 1755: {
1756: Element textEl, previous;
1757: ElementType elType;
1758: AttributeType attrType;
1.60 cvs 1759: Attribute attr, formAttr;
1.155 quint 1760: SSchema MathMLSSchema;
1.60 cvs 1761: int len, val, form;
1.146 quint 1762: CHAR_T text[2];
1.1 cvs 1763: Language lang;
1.143 vatton 1764: char script;
1.155 quint 1765: ThotBool comment;
1.1 cvs 1766:
1.155 quint 1767: MathMLSSchema = TtaGetElementType(el).ElSSchema;
1.60 cvs 1768: /* get the content of the mo element */
1.1 cvs 1769: textEl = TtaGetFirstChild (el);
1.155 quint 1770:
1771: /* skip comments if any */
1772: if (textEl)
1773: do
1774: {
1775: elType = TtaGetElementType (textEl);
1776: if (TtaSameSSchemas (elType.ElSSchema, MathMLSSchema) &&
1777: elType.ElTypeNum == MathML_EL_XMLcomment)
1778: /* it's a comment, skip it */
1779: TtaNextSibling (&textEl);
1780: }
1781: while (textEl && elType.ElTypeNum == MathML_EL_XMLcomment);
1782:
1783: if (textEl && elType.ElTypeNum == MathML_EL_TEXT_UNIT)
1784: /* the mo element is not empty */
1785: {
1786: /* does the mo element have an IntAddSpace attribute? */
1787: attrType.AttrSSchema = MathMLSSchema;
1788: attrType.AttrTypeNum = MathML_ATTR_IntAddSpace;
1789: attr = TtaGetAttribute (el, attrType);
1790: if (attr == NULL)
1.60 cvs 1791: /* no IntAddSpace Attr, create one */
1.1 cvs 1792: {
1.155 quint 1793: attr = TtaNewAttribute (attrType);
1794: TtaAttachAttribute (el, attr, doc);
1795: }
1796: /* space on both sides by default */
1797: val = MathML_ATTR_IntAddSpace_VAL_both;
1798: /* does the mo element have a form attribute? */
1799: attrType.AttrTypeNum = MathML_ATTR_form;
1800: formAttr = TtaGetAttribute (el, attrType);
1801: if (formAttr)
1802: /* there is a form attribute */
1803: {
1804: form = TtaGetAttributeValue (formAttr);
1805: switch (form)
1806: {
1807: case MathML_ATTR_form_VAL_prefix:
1808: val = MathML_ATTR_IntAddSpace_VAL_nospace;
1809: break;
1810: case MathML_ATTR_form_VAL_infix:
1811: val = MathML_ATTR_IntAddSpace_VAL_both;
1812: break;
1813: case MathML_ATTR_form_VAL_postfix:
1814: val = MathML_ATTR_IntAddSpace_VAL_spaceafter;
1815: break;
1816: default:
1817: val = MathML_ATTR_IntAddSpace_VAL_both;
1818: break;
1819: }
1.1 cvs 1820: }
1.155 quint 1821: else
1822: /* no form attribute. Analyze the content */
1823: {
1824: len = TtaGetElementVolume (textEl);
1825: if (len == 1)
1826: {
1827: TtaGiveBufferContent (textEl, text, len+1, &lang);
1828: script = TtaGetScript (lang);
1829: /* the mo element contains a single character */
1.146 quint 1830: #ifndef _I18N_
1.155 quint 1831: if (script == 'L')
1832: /* ISO-Latin 1 character */
1833: {
1.146 quint 1834: #endif
1.155 quint 1835: if (text[0] == '-'
1.153 quint 1836: #ifdef _I18N_
1.155 quint 1837: || text[0] == 0x2212 /* minus */
1.153 quint 1838: #endif
1.155 quint 1839: )
1840: /* prefix or infix operator? */
1841: {
1842: /* skip preceding comments if any */
1843: previous = el;
1844: do
1845: {
1846: comment = FALSE;
1847: TtaPreviousSibling (&previous);
1848: if (previous)
1849: {
1850: elType = TtaGetElementType (previous);
1851: comment = (TtaSameSSchemas (elType.ElSSchema, MathMLSSchema) &&
1852: elType.ElTypeNum == MathML_EL_XMLcomment);
1853: }
1854: }
1855: while (previous && comment);
1856:
1857: if (previous == NULL)
1858: /* no previous sibling => prefix operator */
1859: val = MathML_ATTR_IntAddSpace_VAL_nospace;
1860: else
1861: {
1862: elType = TtaGetElementType (previous);
1.158 quint 1863: if (elType.ElTypeNum == MathML_EL_MO ||
1864: elType.ElTypeNum == MathML_EL_OpeningFence ||
1865: elType.ElTypeNum == MathML_EL_ClosingFence ||
1866: elType.ElTypeNum == MathML_EL_FencedSeparator)
1.155 quint 1867: /* after an operator => prefix operator */
1868: val = MathML_ATTR_IntAddSpace_VAL_nospace;
1869: else
1870: /* infix operator */
1871: val = MathML_ATTR_IntAddSpace_VAL_both;
1872: }
1873: }
1874: else if (text[0] == '&' ||
1875: text[0] == '*' ||
1876: text[0] == '+' ||
1877: text[0] == '/' ||
1878: text[0] == '<' ||
1879: text[0] == '=' ||
1880: text[0] == '>' ||
1881: text[0] == '^' ||
1882: (int)text[0] == 177 || /* plus or minus */
1883: (int)text[0] == 215 || /* times */
1884: (int)text[0] == 247) /* divide */
1885: /* infix operator */
1886: val = MathML_ATTR_IntAddSpace_VAL_both;
1887: else if (text[0] == ',' ||
1888: text[0] == '!' ||
1889: text[0] == '&' ||
1890: text[0] == ':' ||
1891: text[0] == ';')
1892: /* separator */
1893: val = MathML_ATTR_IntAddSpace_VAL_spaceafter;
1894: else if (text[0] == '(' ||
1895: text[0] == ')' ||
1896: text[0] == '[' ||
1897: text[0] == ']' ||
1898: text[0] == '{' ||
1899: text[0] == '}' ||
1900: text[0] == '.' ||
1901: text[0] == '@' ||
1.165 quint 1902: #ifndef _I18N_
1903: text[0] == 'd' || /* probably DifferentialD */
1904: #endif
1.155 quint 1905: (int)text[0] == 129 || /* thin space */
1906: (int)text[0] == 130 || /* en space */
1907: (int)text[0] == 160) /* em space */
1908: val = MathML_ATTR_IntAddSpace_VAL_nospace;
1.146 quint 1909: #ifndef _I18N_
1.155 quint 1910: }
1911: else if (script == 'G')
1912: {
1913: /* Symbol character set */
1914: if ((int)text[0] == 163 || /* less or equal */
1915: (int)text[0] == 177 || /* plus or minus */
1916: (int)text[0] == 179 || /* greater or equal */
1917: (int)text[0] == 180 || /* times */
1918: (int)text[0] == 184 || /* divide */
1919: (int)text[0] == 185 || /* not equal */
1920: (int)text[0] == 186 || /* identical */
1921: (int)text[0] == 187 || /* equivalent */
1922: (int)text[0] == 196 || /* circle times */
1923: (int)text[0] == 197 || /* circle plus */
1924: ((int)text[0] >= 199 && (int)text[0] <= 209) || /* */
1925: (int)text[0] == 217 || /* and */
1926: (int)text[0] == 218) /* or */
1.146 quint 1927: #else
1.155 quint 1928: else
1929: if ((int)text[0] == 0x2264 || /* less or equal */
1930: (int)text[0] == 0x00B1 || /* plus or minus */
1931: (int)text[0] == 0x2265 || /* greater or equal */
1932: (int)text[0] == 0x00D7 || /* times */
1933: (int)text[0] == 0x00F7 || /* divide */
1934: (int)text[0] == 0x2260 || /* not equal */
1935: (int)text[0] == 0x2261 || /* identical */
1936: (int)text[0] == 0x2248 || /* equivalent */
1937: (int)text[0] == 0x2297 || /* circle times */
1938: (int)text[0] == 0x2295 || /* circle plus */
1939: (int)text[0] == 0x2229 || /* Intersection */
1940: (int)text[0] == 0x222A || /* Union */
1941: (int)text[0] == 0x2283 || /* Superset of */
1942: (int)text[0] == 0x2287 || /* Superset of or equal to */
1943: (int)text[0] == 0x2284 || /* Not a subset of */
1944: (int)text[0] == 0x2282 || /* Subset of */
1945: (int)text[0] == 0x2286 || /* Subset of or equal to */
1946: (int)text[0] == 0x2208 || /* Element of */
1947: (int)text[0] == 0x2209 || /* Not an element of */
1948: (int)text[0] == 0x2220 || /* Angle */
1949: (int)text[0] == 0x2207 || /* Nabla */
1950: (int)text[0] == 0x2227 || /* and */
1951: (int)text[0] == 0x2228 || /* or */
1952: (int)text[0] == 0x2190 || /* left arrow */
1953: (int)text[0] == 0x2192 || /* right arrow */
1954: (int)text[0] == 0x2194) /* left right arrow */
1.146 quint 1955: #endif
1.155 quint 1956: /* infix operator */
1957: val = MathML_ATTR_IntAddSpace_VAL_both;
1958: else
1959: val = MathML_ATTR_IntAddSpace_VAL_nospace;
1.146 quint 1960: #ifndef _I18N_
1.155 quint 1961: }
1.146 quint 1962: #endif
1.155 quint 1963: }
1964: }
1965: TtaSetAttributeValue (attr, val, el, doc);
1966: }
1.1 cvs 1967: }
1968:
1969: /*----------------------------------------------------------------------
1.58 cvs 1970: ChildOfMRowOrInferred
1971: Return TRUE if element el is a child of a MROW element or an
1972: inferred MROW element
1973: ----------------------------------------------------------------------*/
1974: ThotBool ChildOfMRowOrInferred (Element el)
1975: {
1976: ElementType elType;
1977: Element parent;
1978: ThotBool result;
1979:
1980: result = FALSE;
1981: parent = TtaGetParent (el);
1982: if (parent)
1983: {
1984: elType = TtaGetElementType (parent);
1985: result = (elType.ElTypeNum == MathML_EL_MROW ||
1986: elType.ElTypeNum == MathML_EL_SqrtBase ||
1987: elType.ElTypeNum == MathML_EL_MSTYLE ||
1988: elType.ElTypeNum == MathML_EL_MERROR ||
1.92 cvs 1989: elType.ElTypeNum == MathML_EL_MENCLOSE ||
1.58 cvs 1990: elType.ElTypeNum == MathML_EL_MPADDED ||
1991: elType.ElTypeNum == MathML_EL_MPHANTOM ||
1.158 quint 1992: elType.ElTypeNum == MathML_EL_MFENCED ||
1.58 cvs 1993: elType.ElTypeNum == MathML_EL_CellWrapper ||
1.92 cvs 1994: elType.ElTypeNum == MathML_EL_MathML ||
1.58 cvs 1995: elType.ElTypeNum == MathML_EL_FencedExpression);
1996: }
1997: return result;
1998: }
1999:
2000: /*----------------------------------------------------------------------
1.170 quint 2001: CheckFenceLargeOp
1.84 cvs 2002: If el is a MO element,
2003: - if it's a large operator (∑ for instance), put a presentation
2004: rule to enlarge the character.
2005: - if it's a child of a MROW (or equivalent) element and if it contains
2006: a single fence character, transform the MO into a MF and the fence
2007: character into a Thot stretchable symbol.
1.1 cvs 2008: ----------------------------------------------------------------------*/
1.170 quint 2009: void CheckFenceLargeOp (Element el, Document doc)
1.1 cvs 2010: {
1.158 quint 2011: ElementType elType, contType;
1.170 quint 2012: Element content, ancestor;
1.128 vatton 2013: AttributeType attrType;
1.170 quint 2014: Attribute attrLargeop, attr, attrStretchy;
1.128 vatton 2015: Language lang;
1.84 cvs 2016: PresentationValue pval;
2017: PresentationContext ctxt;
1.128 vatton 2018: CHAR_T text[2];
1.143 vatton 2019: char script;
1.128 vatton 2020: unsigned char c;
1.158 quint 2021: int len, val, oldStructureChecking;
1.170 quint 2022: ThotBool largeop;
1.1 cvs 2023:
2024: elType = TtaGetElementType (el);
1.158 quint 2025: if (elType.ElTypeNum == MathML_EL_MO ||
2026: elType.ElTypeNum == MathML_EL_OpeningFence ||
2027: elType.ElTypeNum == MathML_EL_ClosingFence ||
2028: elType.ElTypeNum == MathML_EL_FencedSeparator)
2029: /* the element is a MO or equivalent */
1.58 cvs 2030: {
1.84 cvs 2031: content = TtaGetFirstChild (el);
2032: if (content != NULL)
2033: {
1.158 quint 2034: contType = TtaGetElementType (content);
2035: if (contType.ElTypeNum == MathML_EL_TEXT_UNIT)
1.84 cvs 2036: {
1.146 quint 2037: len = TtaGetElementVolume (content);
1.84 cvs 2038: if (len == 1)
2039: /* the MO element contains a single character */
2040: {
1.146 quint 2041: TtaGiveBufferContent (content, text, len+1, &lang);
1.143 vatton 2042: script = TtaGetScript (lang);
1.170 quint 2043: largeop = FALSE;
2044: /* is there an attribute largeop on this mo element? */
2045: attrType.AttrSSchema = elType.ElSSchema;
2046: attrType.AttrTypeNum = MathML_ATTR_largeop;
2047: attrLargeop = TtaGetAttribute (el, attrType);
2048: if (attrLargeop)
2049: /* there is an attribute largeop. Just take its value */
2050: largeop = (TtaGetAttributeValue (attrLargeop) == MathML_ATTR_largeop_VAL_true);
2051: else
2052: /* no attribute largeop */
2053: {
2054: /* first look for an IntDisplaystyle attribute on an ancestor */
2055: attrType.AttrSSchema = elType.ElSSchema;
2056: attrType.AttrTypeNum = MathML_ATTR_IntDisplaystyle;
2057: ancestor = el;
2058: do
2059: {
2060: attr = TtaGetAttribute (ancestor, attrType);
2061: if (!attr)
2062: ancestor = TtaGetParent(ancestor);
2063: }
2064: while (!attr && ancestor);
2065: if (attr)
2066: /* there is an ancestor with an attribute IntDisplaystyle */
2067: {
2068: val = TtaGetAttributeValue (attr);
2069: if (val == MathML_ATTR_IntDisplaystyle_VAL_true)
2070: /* an ancestor has an attribute IntDisplaystyle = true */
2071: /* Look at the symbol */
1.171 carcone 2072: largeop = IsLargeOp (text[0], script);
1.170 quint 2073: }
2074: }
2075: ctxt = TtaGetSpecificStyleContext (doc);
2076: if (largeop)
2077: /* it's a large operator. Make it larger */
1.84 cvs 2078: {
2079: ctxt->destroy = FALSE;
2080: /* the specific presentation to be created is not a CSS rule */
1.147 quint 2081: ctxt->cssSpecificity = 0;
1.84 cvs 2082: pval.typed_data.unit = STYLE_UNIT_PERCENT;
2083: pval.typed_data.real = FALSE;
2084: pval.typed_data.value = 180;
2085: }
1.170 quint 2086: else
2087: /* it's not a large operator, remove the Size presentation rule
2088: if it's present */
2089: {
2090: ctxt->destroy = TRUE;
2091: pval.typed_data.value = 0;
2092: }
2093: TtaSetStylePresentation (PRSize, content, NULL, ctxt, pval);
2094:
2095: if (!largeop && ChildOfMRowOrInferred (el))
1.84 cvs 2096: /* the MO element is a child of a MROW element */
1.170 quint 2097: /* Is it a stretchable symbol? */
1.1 cvs 2098: {
1.171 carcone 2099: if (IsStretchy (text[0], script))
1.84 cvs 2100: /* it's a stretchable parenthesis or equivalent */
2101: {
2102: /* remove the content of the MO element */
2103: TtaDeleteTree (content, doc);
2104: /* change the MO element into a MF element */
1.158 quint 2105: if (elType.ElTypeNum == MathML_EL_MO)
2106: ChangeTypeOfElement (el, doc, MathML_EL_MF);
1.84 cvs 2107: /* is there an attribute stretchy on this mo element? */
2108: attrType.AttrSSchema = elType.ElSSchema;
2109: attrType.AttrTypeNum = MathML_ATTR_stretchy;
2110: attrStretchy = TtaGetAttribute (el, attrType);
2111: if (attrStretchy)
2112: val = TtaGetAttributeValue (attrStretchy);
2113: else
2114: val = MathML_ATTR_stretchy_VAL_true;
2115: if (val == MathML_ATTR_stretchy_VAL_true)
2116: {
1.158 quint 2117: /* attach a IntVertStretch attribute to the MF element */
1.84 cvs 2118: attrType.AttrTypeNum = MathML_ATTR_IntVertStretch;
1.158 quint 2119: attr = TtaGetAttribute (el, attrType);
2120: if (!attr)
2121: {
2122: attr = TtaNewAttribute (attrType);
2123: TtaAttachAttribute (el, attr, doc);
2124: }
1.84 cvs 2125: TtaSetAttributeValue (attr,
2126: MathML_ATTR_IntVertStretch_VAL_yes_,
2127: el, doc);
2128: }
2129: /* create a new content for the MF element */
1.87 cvs 2130: elType.ElTypeNum = MathML_EL_SYMBOL_UNIT;
1.146 quint 2131: #ifdef _I18N_
2132: if (text[0] == 9002)
2133: #else
1.143 vatton 2134: if (script == 'G' && text[0] == 241)
1.146 quint 2135: #endif
1.102 cvs 2136: c = '>'; /* RightAngleBracket */
2137: else
1.146 quint 2138: #ifdef _I18N_
2139: if (text[0] == 9001)
2140: #else
2141: if (script == 'G' && text[0] == 225)
2142: #endif
2143: c = '<'; /* LeftAngleBracket */
2144: else
2145: c = (char) text[0];
1.84 cvs 2146: content = TtaNewElement (doc, elType);
1.158 quint 2147: /* do not check the Thot abstract tree against the structure
2148: schema while inserting this child element */
2149: oldStructureChecking = TtaGetStructureChecking (doc);
2150: TtaSetStructureChecking (0, doc);
1.84 cvs 2151: TtaInsertFirstChild (&content, el, doc);
2152: TtaSetGraphicsShape (content, c, doc);
1.158 quint 2153: /* resume structure checking */
2154: TtaSetStructureChecking ((ThotBool)oldStructureChecking, doc);
1.84 cvs 2155: }
1.1 cvs 2156: }
1.84 cvs 2157: }
2158: }
1.58 cvs 2159: }
2160: }
1.1 cvs 2161: }
2162:
2163: /*----------------------------------------------------------------------
2164: CreateFencedSeparators
2165: Create FencedSeparator elements within the fencedExpression
2166: according to attribute separators of the MFENCED element.
2167: ----------------------------------------------------------------------*/
1.110 cvs 2168: void CreateFencedSeparators (Element fencedExpression, Document doc, ThotBool record)
1.1 cvs 2169: {
2170: ElementType elType;
2171: Element child, separator, leaf, next, prev, mfenced;
2172: AttributeType attrType;
2173: Attribute attr;
2174: int length, sep, i;
2175: Language lang;
1.116 cvs 2176: char text[32], sepValue[4];
1.1 cvs 2177:
2178: /* get the separators attribute */
2179: mfenced = TtaGetParent (fencedExpression);
2180: elType = TtaGetElementType (fencedExpression);
2181: attrType.AttrSSchema = elType.ElSSchema;
2182: attrType.AttrTypeNum = MathML_ATTR_separators;
2183: text[0] = ','; /* default value is sparators="," */
2184: text[1] = EOS;
2185: length = 1;
2186: attr = TtaGetAttribute (mfenced, attrType);
2187: if (attr != NULL)
2188: {
2189: length = 31;
2190: TtaGiveTextAttributeValue (attr, text, &length);
2191: }
2192:
2193: /* create FencedSeparator elements in the FencedExpression */
2194: prev = NULL;
2195: sep = 0;
2196: /* skip leading spaces in attribute separators */
2197: while (text[sep] <= SPACE && text[sep] != EOS)
2198: sep++;
2199: /* if attribute separators is empty or contains only spaces, do not
2200: insert any separator element */
2201: if (text[sep] != EOS)
2202: {
2203: child = TtaGetFirstChild (fencedExpression);
2204: while (child != NULL)
2205: {
2206: next = child;
2207: TtaNextSibling (&next);
2208: elType = TtaGetElementType (child);
2209: if (elType.ElTypeNum != MathML_EL_Construct)
2210: {
2211: if (prev != NULL)
2212: {
2213: elType.ElTypeNum = MathML_EL_FencedSeparator;
2214: separator = TtaNewElement (doc, elType);
2215: TtaInsertSibling (separator, prev, FALSE, doc);
2216: elType.ElTypeNum = MathML_EL_TEXT_UNIT;
2217: leaf = TtaNewElement (doc, elType);
2218: TtaInsertFirstChild (&leaf, separator, doc);
2219: sepValue[0] = text[sep];
1.158 quint 2220: sepValue[1] = EOS;
1.143 vatton 2221: lang = TtaGetLanguageIdFromScript('L');
1.1 cvs 2222: TtaSetTextContent (leaf, sepValue, lang, doc);
1.158 quint 2223: SetIntAddSpaceAttr (separator, doc);
2224: SetIntVertStretchAttr (separator, doc, 0, NULL);
1.170 quint 2225: CheckFenceLargeOp (separator, doc);
1.158 quint 2226:
1.1 cvs 2227: /* is there a following non-space character in separators? */
2228: i = sep + 1;
2229: while (text[i] <= SPACE && text[i] != EOS)
2230: i++;
2231: if (text[i] > SPACE && text[i] != EOS)
2232: sep = i;
1.17 cvs 2233: if (record)
2234: TtaRegisterElementCreate (separator, doc);
1.1 cvs 2235: }
2236: prev = child;
2237: }
2238: child = next;
2239: }
2240: }
2241: }
2242:
1.124 cvs 2243: /*----------------------------------------------------------------------
2244: CreateOpeningOrClosingFence
2245: Create the OpeningFence or ClosingFence element (depending on parameter
2246: open) for the MFENCED element el which contain the fencedExpression
2247: element.
2248: ----------------------------------------------------------------------*/
2249: static void CreateOpeningOrClosingFence (Element fencedExpression,
2250: Element el, Document doc,
2251: ThotBool open)
2252: {
2253: ElementType elType;
2254: Element leaf, fence;
2255: AttributeType attrType;
2256: Attribute attr;
2257: int length;
2258: char text[32];
2259:
2260: elType = TtaGetElementType (el);
2261: attrType.AttrSSchema = elType.ElSSchema;
2262: if (open)
2263: {
1.158 quint 2264: text[0] = '('; /* default value of attribute 'open' */
1.124 cvs 2265: attrType.AttrTypeNum = MathML_ATTR_open;
2266: elType.ElTypeNum = MathML_EL_OpeningFence;
2267: }
2268: else
2269: {
1.158 quint 2270: text[0] = ')'; /* default value of attribute 'close' */
1.124 cvs 2271: attrType.AttrTypeNum = MathML_ATTR_close;
2272: elType.ElTypeNum = MathML_EL_ClosingFence;
2273: }
2274: attr = TtaGetAttribute (el, attrType);
2275: if (attr != NULL)
2276: {
2277: length = 31;
2278: TtaGiveTextAttributeValue (attr, text, &length);
2279: if (length != 1)
2280: /* content of attribute open or close should be a single character */
1.158 quint 2281: text[0] = '?';
1.124 cvs 2282: }
1.158 quint 2283: text[1] = EOS;
1.124 cvs 2284: fence = TtaNewElement (doc, elType);
2285: TtaInsertSibling (fence, fencedExpression, open, doc);
1.158 quint 2286: elType.ElTypeNum = MathML_EL_TEXT_UNIT;
1.124 cvs 2287: leaf = TtaNewElement (doc, elType);
2288: TtaInsertFirstChild (&leaf, fence, doc);
1.158 quint 2289: TtaSetTextContent (leaf, text, TtaGetLanguageIdFromScript('L'), doc);
2290: SetIntAddSpaceAttr (fence, doc);
2291: SetIntVertStretchAttr (fence, doc, 0, NULL);
1.170 quint 2292: CheckFenceLargeOp (fence, doc);
1.124 cvs 2293: }
1.1 cvs 2294:
2295: /*----------------------------------------------------------------------
2296: TransformMFENCED
2297: Transform the content of a MFENCED element: create elements
2298: OpeningFence, FencedExpression, ClosingFence and FencedSeparator.
2299: ----------------------------------------------------------------------*/
1.46 cvs 2300: static void TransformMFENCED (Element el, Document doc)
1.1 cvs 2301: {
2302: ElementType elType;
1.124 cvs 2303: Element child, fencedExpression, next, prev, firstChild;
1.1 cvs 2304:
2305: child = TtaGetFirstChild (el);
2306: if (child != NULL)
2307: elType = TtaGetElementType (child);
2308: if (child != NULL && elType.ElTypeNum == MathML_EL_OpeningFence)
2309: /* The first child of this MFENCED element is an OpeningFence.
2310: This MFENCED expression has already been transformed, possibly
2311: by the Transform command */
2312: {
2313: TtaNextSibling (&child);
2314: fencedExpression = child;
2315: if (fencedExpression != NULL)
2316: elType = TtaGetElementType (fencedExpression);
2317: if (elType.ElTypeNum == MathML_EL_FencedExpression)
2318: /* the second child is a FencedExpression. OK.
2319: Remove all existing FencedSeparator elements */
2320: {
2321: child = TtaGetFirstChild (fencedExpression);
2322: prev = NULL;
2323: while (child != NULL)
2324: {
2325: elType = TtaGetElementType (child);
2326: next = child;
2327: TtaNextSibling (&next);
2328: if (elType.ElTypeNum == MathML_EL_FencedSeparator)
2329: /* Remove this separator */
2330: TtaDeleteTree (child, doc);
2331: child = next;
2332: }
2333: /* create FencedSeparator elements in the FencedExpression */
1.17 cvs 2334: CreateFencedSeparators (fencedExpression, doc, FALSE);
1.1 cvs 2335: }
2336: }
2337: else
2338: /* this MFENCED element must be transformed */
2339: {
2340: /* create a FencedExpression element as a child of the MFENCED elem. */
2341: elType = TtaGetElementType (el);
2342: elType.ElTypeNum = MathML_EL_FencedExpression;
2343: fencedExpression = TtaNewElement (doc, elType);
2344: TtaInsertFirstChild (&fencedExpression, el, doc);
2345: if (child == NULL)
2346: /* empty MFENCED element */
2347: {
2348: elType.ElTypeNum = MathML_EL_Construct;
2349: child = TtaNewElement (doc, elType);
2350: TtaInsertFirstChild (&child, fencedExpression, doc);
1.22 cvs 2351: SetIntPlaceholderAttr (child, doc);
1.1 cvs 2352: }
2353: else
2354: {
2355: /* move the content of the MFENCED element within the new
2356: FencedExpression element */
2357: prev = NULL;
2358: firstChild = NULL;
2359: while (child != NULL)
2360: {
2361: next = child;
2362: TtaNextSibling (&next);
2363: TtaRemoveTree (child, doc);
2364: if (prev == NULL)
2365: {
2366: TtaInsertFirstChild (&child, fencedExpression, doc);
2367: firstChild = child;
2368: }
2369: else
2370: TtaInsertSibling (child, prev, FALSE, doc);
2371: prev = child;
2372: child = next;
2373: }
2374:
2375: /* create FencedSeparator elements in the FencedExpression */
1.17 cvs 2376: CreateFencedSeparators (fencedExpression, doc, FALSE);
1.1 cvs 2377:
2378: /* Create placeholders within the FencedExpression element */
2379: CreatePlaceholders (firstChild, doc);
2380: }
2381:
2382: /* create the OpeningFence element according to the open attribute */
1.124 cvs 2383: CreateOpeningOrClosingFence (fencedExpression, el, doc, TRUE);
1.1 cvs 2384:
2385: /* create the ClosingFence element according to close attribute */
1.124 cvs 2386: CreateOpeningOrClosingFence (fencedExpression, el, doc, FALSE);
1.1 cvs 2387: }
2388: }
2389:
2390: /*----------------------------------------------------------------------
1.59 cvs 2391: MathMLScriptShift
2392: The MathML attribute attr (superscriptshift or subscriptshift) is associated
2393: with element el (a msub, msup or msubsup).
2394: If value is not NULL, generate the corresponding Thot VertPos rule for the
2395: Subscript or Superscript child of el.
2396: If value is NULL, remove the Thot VertPos rule.
2397: -----------------------------------------------------------------------*/
1.120 cvs 2398: void MathMLScriptShift (Document doc, Element el, char *value, int attr)
1.59 cvs 2399: {
2400: ElementType elType;
2401: Element script, child;
2402: int scrType;
2403: PresentationValue pval;
2404: PresentationContext ctxt;
2405:
2406: /* get the Superscript or Subscript child of el */
2407: if (attr == MathML_ATTR_superscriptshift)
2408: scrType = MathML_EL_Superscript;
2409: else if (attr == MathML_ATTR_subscriptshift)
2410: scrType = MathML_EL_Subscript;
2411: else
2412: return;
2413: script = NULL;
2414: child = TtaGetFirstChild (el);
2415: while (!script && child)
2416: {
2417: elType = TtaGetElementType (child);
2418: if (elType.ElTypeNum == scrType)
2419: script = child;
2420: else
2421: TtaNextSibling (&child);
2422: }
2423: if (script)
2424: /* Superscript or Subscript element found */
2425: {
2426: ctxt = TtaGetSpecificStyleContext (doc);
2427: if (!value)
2428: /* remove the presentation rule */
2429: {
2430: ctxt->destroy = TRUE;
1.75 cvs 2431: pval.typed_data.value = 0;
1.59 cvs 2432: TtaSetStylePresentation (PRVertPos, script, NULL, ctxt, pval);
2433: }
2434: else
2435: {
2436: ctxt->destroy = FALSE;
2437: /* parse the attribute value (a number followed by a unit) */
1.119 cvs 2438: value = TtaSkipBlanks (value);
1.59 cvs 2439: value = ParseCSSUnit (value, &pval);
2440: if (pval.typed_data.unit != STYLE_UNIT_INVALID)
2441: {
1.78 cvs 2442: /* the specific presentation to be created is not a CSS rule */
1.147 quint 2443: ctxt->cssSpecificity = 0;
1.59 cvs 2444: if (attr == MathML_ATTR_superscriptshift)
2445: pval.typed_data.value = - pval.typed_data.value;
2446: TtaSetStylePresentation (PRVertPos, script, NULL, ctxt, pval);
2447: }
2448: }
2449: TtaFreeMemory (ctxt);
2450: }
2451: }
2452:
2453: /*----------------------------------------------------------------------
2454: SetScriptShift
2455: If element el (which is a msup, msub or msubsup) has an attribute
2456: att (which is subscriptshift or superscriptshift), generate the
2457: corresponding Thot presentation rule.
2458: ----------------------------------------------------------------------*/
1.120 cvs 2459: static void SetScriptShift (Element el, Document doc, int att)
1.59 cvs 2460: {
2461: AttributeType attrType;
2462: ElementType elType;
2463: Attribute attr;
1.120 cvs 2464: char *value;
1.59 cvs 2465: int length;
2466:
2467: elType = TtaGetElementType (el);
2468: attrType.AttrSSchema = elType.ElSSchema;
2469: attrType.AttrTypeNum = att;
2470: attr = TtaGetAttribute (el, attrType);
2471: if (attr)
2472: {
2473: length = TtaGetTextAttributeLength (attr);
2474: if (length > 0)
2475: {
1.116 cvs 2476: value = TtaGetMemory (length+1);
1.59 cvs 2477: value[0] = EOS;
2478: TtaGiveTextAttributeValue (attr, value, &length);
2479: MathMLScriptShift (doc, el, value, att);
2480: TtaFreeMemory (value);
2481: }
2482: }
2483: }
2484:
2485: /*----------------------------------------------------------------------
1.159 quint 2486: DeleteIntRowAlign
2487: Remove attribute IntRowAlign from element row if there is no rowalign_mtr
2488: attribut on this element.
2489: -----------------------------------------------------------------------*/
2490: static void DeleteIntRowAlign (Element row, Document doc)
2491: {
2492: ElementType elType;
2493: AttributeType attrType;
2494: Attribute attr;
2495:
2496: elType = TtaGetElementType (row);
2497: attrType.AttrSSchema = elType.ElSSchema;
2498: attrType.AttrTypeNum = MathML_ATTR_rowalign_mtr;
2499: attr = TtaGetAttribute (row, attrType);
2500: if (!attr)
2501: {
2502: attrType.AttrTypeNum = MathML_ATTR_IntRowAlign;
2503: attr = TtaGetAttribute (row, attrType);
2504: if (attr)
2505: TtaRemoveAttribute (row, attr, doc);
2506: }
2507: }
2508:
2509: /*----------------------------------------------------------------------
2510: SetIntRowAlign
2511: Set attribute IntRowAlign for element row unless this element already has
2512: a rowalign_mtr attribute
2513: -----------------------------------------------------------------------*/
2514: static void SetIntRowAlign (Element row, int val, Document doc)
2515: {
2516: ElementType elType;
2517: AttributeType attrType;
2518: Attribute attr;
2519:
2520: elType = TtaGetElementType (row);
2521: attrType.AttrSSchema = elType.ElSSchema;
2522: attrType.AttrTypeNum = MathML_ATTR_rowalign_mtr;
2523: attr = TtaGetAttribute (row, attrType);
2524: if (!attr)
2525: {
2526: attrType.AttrTypeNum = MathML_ATTR_IntRowAlign;
2527: attr = TtaGetAttribute (row, attrType);
2528: if (!attr)
2529: {
2530: attr = TtaNewAttribute (attrType);
2531: TtaAttachAttribute (row, attr, doc);
2532: }
2533: TtaSetAttributeValue (attr, val, row, doc);
2534: }
2535: }
2536:
2537: /*----------------------------------------------------------------------
2538: HandleRowalignAttribute
2539: An attribute rowalign has been created, updated (if !delete) or deleted
2540: (if delete) for element el in document doc. Update the IntRowAlign
2541: attributes of all enclosed mrow elements accordingly.
2542: ----------------------------------------------------------------------*/
2543: void HandleRowalignAttribute (Attribute attr, Element el, Document doc,
2544: ThotBool delete)
2545: {
2546: char *value;
2547: char *ptr;
2548: int length, val;
2549: ElementType elType;
2550: Element row;
2551:
2552: elType = TtaGetElementType (el);
2553: if (elType.ElTypeNum != MathML_EL_MTABLE ||
2554: strcmp (TtaGetSSchemaName (elType.ElSSchema), "MathML"))
2555: /* ignore rowalign attribute on mstyle elements */
2556: /* process it only on mtable elements */
2557: return;
2558:
2559: value = NULL;
2560: if (!delete)
2561: {
2562: length = TtaGetTextAttributeLength (attr);
2563: if (length > 0)
2564: {
2565: value = TtaGetMemory (length+1);
2566: value[0] = EOS;
2567: TtaGiveTextAttributeValue (attr, value, &length);
2568: }
2569: }
2570: /* if attribute rowalign is created or updated but has no value, don't
2571: do anything */
2572: if (!delete && !value)
2573: return;
2574:
2575: ptr = value;
2576: val = 0;
2577: elType.ElTypeNum = MathML_EL_TableRow;
2578: row = TtaSearchTypedElement (elType, SearchInTree, el);
2579: while (row)
2580: {
2581: elType = TtaGetElementType (row);
2582: /* skip comments and other non row elements */
2583: if ((elType.ElTypeNum == MathML_EL_MTR ||
2584: elType.ElTypeNum == MathML_EL_MLABELEDTR) &&
2585: strcmp (TtaGetSSchemaName (elType.ElSSchema), "MathML") == 0)
2586: {
2587: if (delete)
2588: DeleteIntRowAlign (row, doc);
2589: else
2590: {
2591: if (*ptr != EOS)
2592: {
2593: /* get next word in the attribute value */
2594: ptr = TtaSkipBlanks (ptr);
2595: /* process that word */
2596: if (*ptr != EOS && *ptr != ' ')
2597: {
2598: if (!strncasecmp (ptr, "top", 3))
2599: val = MathML_ATTR_IntRowAlign_VAL_IntTop;
2600: else if (!strncasecmp (ptr, "bottom", 6))
2601: val = MathML_ATTR_IntRowAlign_VAL_IntBottom;
2602: else if (!strncasecmp (ptr, "center", 6))
2603: val = MathML_ATTR_IntRowAlign_VAL_IntCenter;
2604: else if (!strncasecmp (ptr, "baseline", 8))
2605: val = MathML_ATTR_IntRowAlign_VAL_IntBaseline;
2606: else if (!strncasecmp (ptr, "axis", 4))
2607: val = MathML_ATTR_IntRowAlign_VAL_IntAxis;
2608: else
2609: val = 0;
2610: /* skip the word that has been processed */
2611: while (*ptr != EOS && *ptr != ' ')
2612: ptr++;
2613: }
2614: }
2615: if (val > 0)
2616: SetIntRowAlign (row, val, doc);
2617: }
2618: }
2619: TtaNextSibling (&row);
2620: }
2621: if (value)
2622: TtaFreeMemory (value);
2623: }
2624:
2625: /*----------------------------------------------------------------------
2626: DeleteIntColAlign
2627: Remove attribute IntColAlign from element cell if there is no columnalign_mtd
2628: attribut on this element.
2629: -----------------------------------------------------------------------*/
2630: static void DeleteIntColAlign (Element cell, Document doc)
2631: {
2632: ElementType elType;
2633: AttributeType attrType;
2634: Attribute attr;
2635:
2636: elType = TtaGetElementType (cell);
2637: attrType.AttrSSchema = elType.ElSSchema;
2638: attrType.AttrTypeNum = MathML_ATTR_columnalign_mtd;
2639: attr = TtaGetAttribute (cell, attrType);
2640: if (!attr)
2641: {
2642: attrType.AttrTypeNum = MathML_ATTR_IntColAlign;
2643: attr = TtaGetAttribute (cell, attrType);
2644: if (attr)
2645: TtaRemoveAttribute (cell, attr, doc);
2646: }
2647: }
2648:
2649: /*----------------------------------------------------------------------
2650: SetIntColAlign
2651: Set attribute IntColAlign for element cell unless this element already has
2652: a columnalign_mtd attribute
2653: -----------------------------------------------------------------------*/
2654: static void SetIntColAlign (Element cell, int val, Document doc)
2655: {
2656: ElementType elType;
2657: AttributeType attrType;
2658: Attribute attr;
2659:
2660: elType = TtaGetElementType (cell);
2661: attrType.AttrSSchema = elType.ElSSchema;
2662: attrType.AttrTypeNum = MathML_ATTR_columnalign_mtd;
2663: attr = TtaGetAttribute (cell, attrType);
2664: if (!attr)
2665: {
2666: attrType.AttrTypeNum = MathML_ATTR_IntColAlign;
2667: attr = TtaGetAttribute (cell, attrType);
2668: if (!attr)
2669: {
2670: attr = TtaNewAttribute (attrType);
2671: TtaAttachAttribute (cell, attr, doc);
2672: }
2673: TtaSetAttributeValue (attr, val, cell, doc);
2674: }
2675: }
2676:
2677: /*----------------------------------------------------------------------
2678: RowWithoutColalignAttr
2679: if skip: if element row has a columnalign attribute, get the next sibling row
2680: element without a columnalign attribute and return its first cell
2681: if not skip: always return the first cell in the row, and the columnalign
2682: attribute of that row if there is one.
2683: -----------------------------------------------------------------------*/
2684: static void RowWithoutColalignAttr (Element *row, Element *cell,
2685: Attribute *attr, ThotBool skip)
2686: {
2687: ElementType elType;
2688: AttributeType attrType;
2689:
2690: elType = TtaGetElementType (*row);
2691: attrType.AttrSSchema = elType.ElSSchema;
2692: attrType.AttrTypeNum = MathML_ATTR_columnalign;
2693: *cell = NULL;
2694: *attr = NULL;
2695: while (*row != NULL && *cell == NULL)
2696: {
2697: elType = TtaGetElementType (*row);
2698: if ((elType.ElTypeNum != MathML_EL_MTR &&
2699: elType.ElTypeNum != MathML_EL_MLABELEDTR) ||
2700: strcmp (TtaGetSSchemaName (elType.ElSSchema), "MathML"))
2701: /* not a row. Skip it */
2702: TtaNextSibling (row);
2703: else
2704: {
2705: /* skip that row if it has a columnalign attribute */
2706: *attr = TtaGetAttribute (*row, attrType);
2707: if (skip && *attr != NULL)
2708: {
2709: TtaNextSibling (row);
2710: *attr = NULL;
2711: }
2712: else
2713: /* it's a row without a columnalign attribute */
2714: *cell = TtaGetFirstChild (*row);
2715: }
2716: }
2717: }
2718:
2719: /*----------------------------------------------------------------------
2720: HandleColalignAttribute
2721: An attribute columnalign has been created, updated (if !delete) or deleted
2722: (if delete) for element el in document doc. Update the IntColAlign
2723: attributes of all concerned cells accordingly.
2724: If allRows is TRUE, process also rows that have their own columnalign
2725: attribute, according to that attribute, otherwise skip those rows.
2726: ----------------------------------------------------------------------*/
2727: void HandleColalignAttribute (Attribute attr, Element el, Document doc,
2728: ThotBool delete, ThotBool allRows)
2729: {
2730: char *value, *localValue;
2731: char *ptr;
2732: int length, val;
2733: ElementType elType;
2734: Element cell, row;
2735: Attribute localAttr;
2736: ThotBool fullTable;
2737:
2738: elType = TtaGetElementType (el);
2739: if ((elType.ElTypeNum != MathML_EL_MTABLE &&
2740: elType.ElTypeNum != MathML_EL_MTR &&
2741: elType.ElTypeNum != MathML_EL_MLABELEDTR) ||
2742: strcmp (TtaGetSSchemaName (elType.ElSSchema), "MathML"))
2743: /* ignore columnalign attribute on mstyle elements */
2744: /* process it only on mtable elements */
2745: return;
2746:
2747: fullTable = (elType.ElTypeNum == MathML_EL_MTABLE);
2748: value = NULL;
2749: localValue = NULL;
2750: if (!delete)
2751: {
2752: length = TtaGetTextAttributeLength (attr);
2753: if (length > 0)
2754: {
2755: value = TtaGetMemory (length+1);
2756: value[0] = EOS;
2757: TtaGiveTextAttributeValue (attr, value, &length);
2758: }
2759: }
2760: /* if attribute columnalign is created or updated but has no value, don't
2761: do anything */
2762: if (!delete && !value)
2763: return;
2764:
2765: ptr = value;
2766: val = 0;
2767: /* get the first cell within the element */
2768: elType.ElTypeNum = MathML_EL_MTD;
2769: cell = TtaSearchTypedElement (elType, SearchInTree, el);
2770: if (cell && fullTable)
2771: {
2772: elType.ElTypeNum = MathML_EL_TableRow;
2773: row = TtaGetTypedAncestor (cell, elType);
2774: RowWithoutColalignAttr (&row, &cell, &localAttr, !allRows);
2775: if (localAttr)
2776: {
2777: length = TtaGetTextAttributeLength (localAttr);
2778: if (length > 0)
2779: {
2780: if (localValue)
2781: TtaFreeMemory (localValue);
2782: localValue = TtaGetMemory (length+1);
2783: localValue[0] = EOS;
2784: TtaGiveTextAttributeValue (localAttr, localValue, &length);
2785: ptr = localValue;
2786: }
2787: }
2788: }
2789: while (cell)
2790: {
2791: elType = TtaGetElementType (cell);
2792: /* skip comments and other non cell elements */
2793: if (elType.ElTypeNum == MathML_EL_MTD &&
2794: strcmp (TtaGetSSchemaName (elType.ElSSchema), "MathML") == 0)
2795: {
2796: if (delete)
2797: DeleteIntColAlign (cell, doc);
2798: else
2799: {
2800: if (*ptr != EOS)
2801: {
2802: /* get next word in the attribute value */
2803: ptr = TtaSkipBlanks (ptr);
2804: /* process that word */
2805: if (*ptr != EOS && *ptr != ' ')
2806: {
2807: if (!strncasecmp (ptr, "left", 4))
2808: val = MathML_ATTR_IntColAlign_VAL_IntLeft;
2809: else if (!strncasecmp (ptr, "center", 6))
2810: val = MathML_ATTR_IntColAlign_VAL_IntCenter;
2811: else if (!strncasecmp (ptr, "right", 5))
2812: val = MathML_ATTR_IntColAlign_VAL_IntRight;
2813: else
2814: val = 0;
2815: /* skip the word that has been processed */
2816: while (*ptr != EOS && *ptr != ' ')
2817: ptr++;
2818: }
2819: }
2820: if (val > 0)
2821: SetIntColAlign (cell, val, doc);
2822: }
2823: }
2824: TtaNextSibling (&cell);
2825: if (!cell && fullTable && row)
2826: /* no more sibling cell. If the columnalign attribute is for the
2827: full table, get the first cell in the next row */
2828: {
2829: TtaNextSibling (&row);
2830: if (row)
2831: {
2832: /* parse value of columnalign attribute again from the beginning */
2833: ptr = value;
2834: RowWithoutColalignAttr (&row, &cell, &localAttr, !allRows);
2835: if (localAttr)
2836: {
2837: length = TtaGetTextAttributeLength (localAttr);
2838: if (length > 0)
2839: {
2840: if (localValue)
2841: TtaFreeMemory (localValue);
2842: localValue = TtaGetMemory (length+1);
2843: localValue[0] = EOS;
2844: TtaGiveTextAttributeValue (localAttr, localValue, &length);
2845: ptr = localValue;
2846: }
2847: }
2848: }
2849: }
2850: }
2851: if (value)
2852: TtaFreeMemory (value);
2853: if (localValue)
2854: TtaFreeMemory (localValue);
2855: }
2856:
2857: /*----------------------------------------------------------------------
1.167 quint 2858: HandleRowspacingAttribute
2859: An attribute rowspacing has been created, updated or deleted (if delete
2860: is TRUE) for element el in document doc. Update the top and bottom padding
2861: of all cells accordingly.
2862: ----------------------------------------------------------------------*/
2863: void HandleRowspacingAttribute (Attribute attr, Element el, Document doc,
2864: ThotBool delete)
2865: {
2866: ElementType elType, rowType, cellType;
2867: int length, val, topVal, topValUnit, bottomVal,
2868: bottomValUnit, rowspan, cellBottomVal, i;
2869: char *value, *ptr, *spanPtr;
2870: PresentationValue pval;
2871: PresentationContext ctxt;
2872: Element row, nextRow, cell;
2873: ThotBool stop, firstRow;
2874: AttributeType rowspanType;
2875: Attribute rowspanAttr;
2876:
2877: elType = TtaGetElementType (el);
2878: if (elType.ElTypeNum != MathML_EL_MTABLE ||
2879: strcmp (TtaGetSSchemaName (elType.ElSSchema), "MathML"))
2880: /* ignore rowspacing attribute on mstyle elements */
2881: /* process it only on mtable elements */
2882: return;
2883:
2884: value = NULL;
2885: if (!delete && attr)
2886: {
2887: length = TtaGetTextAttributeLength (attr);
2888: if (length > 0)
2889: {
2890: value = TtaGetMemory (length+1);
2891: value[0] = EOS;
2892: TtaGiveTextAttributeValue (attr, value, &length);
2893: }
2894: }
2895:
2896: ctxt = TtaGetSpecificStyleContext (doc);
2897: /* the specific presentation to be created is not a CSS rule */
2898: ctxt->cssSpecificity = 0;
2899: ptr = value;
2900: rowspanType.AttrSSchema = elType.ElSSchema;
2901: rowspanType.AttrTypeNum = MathML_ATTR_rowspan_;
2902:
2903: /* check all rows within the table */
2904: firstRow = TRUE;
2905: bottomVal = 0;
2906: elType.ElTypeNum = MathML_EL_TableRow;
2907: row = TtaSearchTypedElement (elType, SearchInTree, el);
2908: while (row)
2909: {
2910: /* get the next row to check if the current row is the last one */
2911: nextRow = row;
2912: stop = FALSE;
2913: do
2914: {
2915: TtaNextSibling (&nextRow);
2916: if (!nextRow)
2917: stop = TRUE;
2918: else
2919: {
2920: rowType = TtaGetElementType (nextRow);
2921: /* skip comments and other non mrow elements */
2922: if ((rowType.ElTypeNum == MathML_EL_MTR ||
2923: rowType.ElTypeNum == MathML_EL_MLABELEDTR) &&
2924: !strcmp (TtaGetSSchemaName (rowType.ElSSchema), "MathML"))
2925: /* it's the next mrow */
2926: stop = TRUE;
2927: }
2928: }
2929: while (!stop);
2930:
2931: /* prepare the value of the padding to be associated with the cells
2932: of that row */
2933: if (delete)
2934: /* remove the presentation rules */
2935: {
2936: pval.typed_data.value = 0;
2937: val = 0;
2938: }
2939: else
2940: {
2941: if (!value)
2942: {
2943: pval.typed_data.unit = STYLE_UNIT_PT;
2944: pval.typed_data.value = 0;
2945: pval.typed_data.real = FALSE;
2946: val = 0;
2947: }
2948: else
2949: {
2950: /* get the next field in the attribute value (a number followed
2951: by a unit) */
2952: ptr = TtaSkipBlanks (ptr);
2953: if (*ptr != EOS)
2954: {
2955: ptr = ParseCSSUnit (ptr, &pval);
2956: if (pval.typed_data.unit != STYLE_UNIT_INVALID)
2957: {
2958: /* if the value is an integer, make it a real to avoid
2959: errors in dividing small integers, such as "1cm" */
2960: if (!pval.typed_data.real)
2961: {
2962: pval.typed_data.value *= 1000;
2963: pval.typed_data.real = TRUE;
2964: }
2965: val = pval.typed_data.value / 2;
2966: }
1.173 ! vatton 2967: else
! 2968: val = pval.typed_data.value;
1.167 quint 2969: }
2970: }
2971: }
2972:
2973: /* initialize the padding to be set at the top and at the bottom
2974: of each cell */
2975: /* the top padding of a row is the same as the bottom padding of the
2976: previous row */
2977: topVal = bottomVal;
2978: topValUnit = bottomValUnit;
2979: if (!nextRow)
2980: /* row is the last in the table. It must not have any padding
2981: at the bottom */
2982: bottomVal = 0;
2983: else
2984: {
2985: bottomVal = val;
2986: bottomValUnit = pval.typed_data.unit;
2987: }
2988:
2989: /* get the first cell of that row (ignoring Label cells) */
2990: elType.ElTypeNum = MathML_EL_MTD;
2991: cell = TtaSearchTypedElement (elType, SearchInTree, row);
2992: /* update attribute MLineBelowtop padding and bottom padding for all
2993: cells in that row */
2994: while (cell)
2995: {
2996: cellType = TtaGetElementType (cell);
2997: /* skip comments and other non mtd elements */
2998: if (cellType.ElTypeNum == MathML_EL_MTD &&
2999: !strcmp (TtaGetSSchemaName (cellType.ElSSchema), "MathML"))
3000: /* that's a mtd element. Process it */
3001: {
3002: /* by default, use the value for the current row */
3003: cellBottomVal = bottomVal;
3004: if (!delete && value)
3005: /* take row spanning into account */
3006: {
3007: /* is there a rowspan attribute on that cell? */
3008: rowspanAttr = TtaGetAttribute (cell, rowspanType);
3009: if (!rowspanAttr)
3010: rowspan = 1;
3011: else
3012: rowspan = TtaGetAttributeValue (rowspanAttr);
3013: if (!delete)
3014: {
3015: /* skip rowspan-1 words in the value of attribute
3016: rowlines */
3017: if (rowspan > 1)
3018: {
3019: spanPtr = ptr;
3020: for (i = 1; i < rowspan && *spanPtr != EOS; i++)
3021: {
3022: spanPtr = TtaSkipBlanks (spanPtr);
3023: spanPtr = ParseCSSUnit (spanPtr, &pval);
3024: }
3025: if (pval.typed_data.unit == STYLE_UNIT_INVALID)
3026: {
3027: val = 0;
3028: cellBottomVal = 0;
3029: bottomValUnit = STYLE_UNIT_PT;
3030: }
3031: else
3032: {
3033: /* if the value is an integer, make it a real to
3034: avoid errors in dividing small integers,
3035: such as "1cm" */
3036: if (!pval.typed_data.real)
3037: {
3038: pval.typed_data.value *= 1000;
3039: pval.typed_data.real = TRUE;
3040: }
3041: val = pval.typed_data.value / 2;
3042: cellBottomVal = val;
3043: bottomValUnit = pval.typed_data.unit;
3044: }
3045: }
3046: }
3047: }
3048:
3049: if ((delete || !value) && !firstRow)
3050: ctxt->destroy = TRUE;
3051: else
3052: {
3053: pval.typed_data.value = topVal;
3054: pval.typed_data.unit = topValUnit;
3055: ctxt->destroy = FALSE;
3056: }
3057: TtaSetStylePresentation (PRPaddingTop, cell, NULL, ctxt, pval);
3058: if ((delete || !value) && nextRow)
3059: ctxt->destroy = TRUE;
3060: else
3061: {
3062: pval.typed_data.value = cellBottomVal;
3063: pval.typed_data.unit = bottomValUnit;
3064: ctxt->destroy = FALSE;
3065: }
3066: TtaSetStylePresentation (PRPaddingBottom, cell, NULL, ctxt,pval);
3067: }
3068: TtaNextSibling (&cell);
3069: }
3070: row = nextRow;
3071: firstRow = FALSE;
3072: }
3073:
3074: TtaFreeMemory (ctxt);
3075: if (value)
3076: TtaFreeMemory (value);
3077: }
3078:
3079: /*----------------------------------------------------------------------
3080: ConvertNamedSpace
3081: if name is the name of a space, return the value of this space
3082: in value, otherwise return an empty string in value.
3083: -----------------------------------------------------------------------*/
3084: static char* ConvertNamedSpace (char *name, char *value)
3085: {
3086: if (strcmp (name, "veryverythinmathspace") == 0)
3087: {
3088: strcpy (value, "0.0555556em");
3089: return (name + strlen("veryverythinmathspace"));
3090: }
3091: else if (strcmp (name, "verythinmathspace") == 0)
3092: {
3093: strcpy (value, "0.111111em");
3094: return (name + strlen("verythinmathspace"));
3095: }
3096: else if (strcmp (name, "thinmathspace") == 0)
3097: {
3098: strcpy (value, "0.166667em");
3099: return (name + strlen("thinmathspace"));
3100: }
3101: else if (strcmp (name, "mediummathspace") == 0)
3102: {
3103: strcpy (value, "0.222222em");
3104: return (name + strlen("mediummathspace"));
3105: }
3106: else if (strcmp (name, "thickmathspace") == 0)
3107: {
3108: strcpy (value, "0.277778em");
3109: return (name + strlen("thickmathspace"));
3110: }
3111: else if (strcmp (name, "verythickmathspace") == 0)
3112: {
3113: strcpy (value, "0.333333em");
3114: return (name + strlen("verythickmathspace"));
3115: }
3116: else if (strcmp (name, "veryverythickmathspace") == 0)
3117: {
3118: strcpy (value, "0.388889em");
3119: return (name + strlen("veryverythickmathspace"));
3120: }
3121: else
3122: {
3123: value[0] = EOS;
3124: return name;
3125: }
3126: }
3127:
3128: /*----------------------------------------------------------------------
3129: HandleColumnspacingAttribute
3130: An attribute columnspacing has been created, updated or deleted (if delete
3131: is TRUE) for element el in document doc. Update the left and right padding
3132: of all cells accordingly.
3133: ----------------------------------------------------------------------*/
3134: void HandleColumnspacingAttribute (Attribute attr, Element el, Document doc,
3135: ThotBool delete)
3136: {
3137: ElementType elType;
3138: int length, val, valUnit, leftVal, leftValUnit,
3139: rightVal, rightValUnit, colspan, i;
3140: char *value, *ptr, valueOfNamedSpace[20];
3141: PresentationValue pval;
3142: PresentationContext ctxt;
3143: Element row, cell, nextCell;
3144: ThotBool stop, firstCell;
1.168 quint 3145: Attribute spanAttr;
1.167 quint 3146: AttributeType colspanType;
3147:
3148: elType = TtaGetElementType (el);
3149: if (elType.ElTypeNum != MathML_EL_MTABLE ||
3150: strcmp (TtaGetSSchemaName (elType.ElSSchema), "MathML"))
3151: /* ignore columnspacing attribute on mstyle elements */
3152: /* process it only on mtable elements */
3153: return;
3154:
3155: value = NULL;
3156: if (!delete && attr)
3157: {
3158: length = TtaGetTextAttributeLength (attr);
3159: if (length > 0)
3160: {
3161: value = TtaGetMemory (length+1);
3162: value[0] = EOS;
3163: TtaGiveTextAttributeValue (attr, value, &length);
3164: }
3165: }
3166:
3167: ctxt = TtaGetSpecificStyleContext (doc);
3168: /* the specific presentation to be created is not a CSS rule */
3169: ctxt->cssSpecificity = 0;
3170: val = 0;
3171: colspanType.AttrSSchema = elType.ElSSchema;
3172: colspanType.AttrTypeNum = MathML_ATTR_columnspan;
3173:
3174: /* check all cells in all rows within the table */
3175: elType.ElTypeNum = MathML_EL_TableRow;
3176: row = TtaSearchTypedElement (elType, SearchInTree, el);
3177: while (row)
3178: {
3179: elType = TtaGetElementType (row);
3180: if ((elType.ElTypeNum == MathML_EL_MTR ||
3181: elType.ElTypeNum == MathML_EL_MLABELEDTR) &&
3182: strcmp (TtaGetSSchemaName (elType.ElSSchema), "MathML") == 0)
3183: /* that's a table row. check all its cells */
3184: {
3185: firstCell = TRUE;
3186: rightVal = 0;
3187: val = 0;
3188: valUnit = STYLE_UNIT_PT;
3189: ptr = value;
3190: /* get the first cell of that row (ignoring Label cells) */
3191: elType.ElTypeNum = MathML_EL_MTD;
3192: cell = TtaSearchTypedElement (elType, SearchInTree, row);
3193: while (cell)
3194: {
3195: /* prepare the value of the padding to be associated with the
3196: cells */
3197: if (delete)
3198: /* remove the presentation rules */
3199: {
3200: pval.typed_data.value = 0;
3201: val = 0;
3202: valUnit = STYLE_UNIT_PT;
3203: }
3204: else
3205: {
3206: if (!value)
3207: {
3208: pval.typed_data.unit = STYLE_UNIT_PT;
3209: pval.typed_data.value = 0;
3210: pval.typed_data.real = FALSE;
3211: val = 0;
3212: valUnit = STYLE_UNIT_PT;
3213: }
3214: else
3215: {
3216: /* parse the next field in the attribute value (a number
3217: followed by a unit or a named space) */
3218: ptr = TtaSkipBlanks (ptr);
3219: if (*ptr != EOS)
3220: {
3221: /* is there a columnspan attribute on that cell? */
3222: spanAttr = TtaGetAttribute (cell, colspanType);
3223: if (!spanAttr)
3224: colspan = 1;
3225: else
3226: colspan = TtaGetAttributeValue (spanAttr);
3227: /* skip (colspan - 1) words in the attribute */
3228: for (i = 1; i <= colspan && *ptr != EOS; i++)
3229: {
3230: ptr = TtaSkipBlanks (ptr);
3231: ptr = ConvertNamedSpace (ptr, valueOfNamedSpace);
3232: if (valueOfNamedSpace[0] != EOS)
3233: /* it's a named space */
3234: ptr = ParseCSSUnit (valueOfNamedSpace, &pval);
3235: else
3236: ptr = ParseCSSUnit (ptr, &pval);
3237: if (pval.typed_data.unit == STYLE_UNIT_INVALID)
3238: {
3239: val = 0;
3240: valUnit = STYLE_UNIT_PT;
3241: }
3242: else
3243: {
3244: /* if the value is an integer, make it a real
3245: to avoid errors in dividing small
3246: integers, such as "1cm" */
3247: if (!pval.typed_data.real)
3248: {
3249: pval.typed_data.value *= 1000;
3250: pval.typed_data.real = TRUE;
3251: }
3252: val = pval.typed_data.value / 2;
3253: valUnit = pval.typed_data.unit;
3254: }
3255: }
3256: }
3257: }
3258: }
3259:
3260: /* get the next cell in the current row to check if the current
3261: cell is the last one in the row */
3262: nextCell = cell;
3263: stop = FALSE;
3264: do
3265: {
3266: TtaNextSibling (&nextCell);
3267: if (!nextCell)
3268: stop = TRUE;
3269: else
3270: {
3271: elType = TtaGetElementType (nextCell);
3272: /* skip comments and other non mtd elements */
3273: if (elType.ElTypeNum == MathML_EL_MTD &&
3274: strcmp (TtaGetSSchemaName (elType.ElSSchema), "MathML") == 0)
3275: /* it's the next cell */
3276: stop = TRUE;
3277: }
3278: }
3279: while (!stop);
3280:
3281: /* initialize the padding to be set at the right and at the left
3282: of each cell */
3283: /* the leftPadding of a cell is the same as the right padding
3284: of the previous cell */
3285: leftVal = rightVal;
3286: leftValUnit = rightValUnit;
3287: if (!nextCell)
3288: /* it's the last cell in the row. It must not have any
3289: padding on the right */
3290: {
3291: rightVal = 0;
3292: rightValUnit = STYLE_UNIT_PT;
3293: }
3294: else
3295: {
3296: rightVal = val;
3297: rightValUnit = valUnit;
3298: }
3299:
3300: /* set the left and right padding for this cell */
3301: if ((delete || !value) && !firstCell)
3302: ctxt->destroy = TRUE;
3303: else
3304: {
3305: pval.typed_data.value = leftVal;
3306: pval.typed_data.unit = leftValUnit;
3307: ctxt->destroy = FALSE;
3308: }
3309: TtaSetStylePresentation (PRPaddingLeft, cell, NULL, ctxt, pval);
3310: if ((delete || !value) && nextCell)
3311: ctxt->destroy = TRUE;
3312: else
3313: {
3314: pval.typed_data.value = rightVal;
3315: pval.typed_data.unit = rightValUnit;
3316: ctxt->destroy = FALSE;
3317: }
3318: TtaSetStylePresentation (PRPaddingRight, cell, NULL, ctxt, pval);
3319: cell = nextCell;
3320: firstCell = FALSE;
3321: }
3322: }
3323: TtaNextSibling (&row);
3324: }
3325:
3326: if (value)
3327: TtaFreeMemory (value);
3328: }
3329:
3330: /*----------------------------------------------------------------------
1.159 quint 3331: HandleRowlinesAttribute
3332: An attribute rowlines has been created, updated or deleted (if delete
3333: is TRUE) for element el in document doc. Update attribute MLineBelow
3334: of all cells accordingly.
3335: ----------------------------------------------------------------------*/
3336: void HandleRowlinesAttribute (Attribute attr, Element el, Document doc,
3337: ThotBool delete)
3338: {
3339: char *value;
1.160 quint 3340: char *ptr, *spanPtr;
3341: int length, val, rowspan, i, cellVal;
1.159 quint 3342: ElementType elType, rowType, cellType;
3343: Element row, nextRow, cell;
3344: ThotBool stop;
1.160 quint 3345: AttributeType attrType, rowspanType;
3346: Attribute intAttr, rowspanAttr;
1.159 quint 3347:
3348: elType = TtaGetElementType (el);
3349: if (elType.ElTypeNum != MathML_EL_MTABLE ||
3350: strcmp (TtaGetSSchemaName (elType.ElSSchema), "MathML"))
3351: /* ignore rowlines attribute on mstyle elements */
3352: /* process it only on mtable elements */
3353: return;
3354:
3355: value = NULL;
3356: if (!delete)
3357: {
3358: length = TtaGetTextAttributeLength (attr);
3359: if (length > 0)
3360: {
3361: value = TtaGetMemory (length+1);
3362: value[0] = EOS;
3363: TtaGiveTextAttributeValue (attr, value, &length);
3364: }
3365: }
3366: /* if attribute rowlines is created or updated but has no value, don't
3367: do anything */
3368: if (!delete && !value)
3369: return;
3370:
3371: ptr = value;
3372: val = 0;
3373: attrType.AttrSSchema = elType.ElSSchema;
1.160 quint 3374: rowspanType.AttrSSchema = elType.ElSSchema;
3375: rowspanType.AttrTypeNum = MathML_ATTR_rowspan_;
1.159 quint 3376:
3377: /* check all rows within the table */
3378: elType.ElTypeNum = MathML_EL_TableRow;
3379: row = TtaSearchTypedElement (elType, SearchInTree, el);
3380: while (row)
3381: {
3382: /* get the next row to check if the current row is the last one */
3383: nextRow = row;
3384: stop = FALSE;
3385: do
3386: {
3387: TtaNextSibling (&nextRow);
3388: if (!nextRow)
3389: stop = TRUE;
3390: else
3391: {
3392: rowType = TtaGetElementType (nextRow);
3393: /* skip comments and other non mrow elements */
3394: if ((rowType.ElTypeNum == MathML_EL_MTR ||
3395: rowType.ElTypeNum == MathML_EL_MLABELEDTR) &&
3396: !strcmp (TtaGetSSchemaName (rowType.ElSSchema), "MathML"))
3397: /* it's the next mrow */
3398: stop = TRUE;
3399: }
3400: }
3401: while (!stop);
3402:
3403: if (!nextRow)
3404: /* row is the last in the table. It must not have a line
3405: at the bottom. Delete it if there is one */
3406: val = 0;
3407: else
3408: {
3409: if (delete)
3410: val = 0;
3411: else
3412: if (*ptr != EOS)
3413: {
3414: /* get next word in the attribute value */
3415: ptr = TtaSkipBlanks (ptr);
3416: /* process that word */
3417: if (*ptr != EOS && *ptr != ' ')
3418: {
3419: if (!strncasecmp (ptr, "none", 4))
3420: val = 0;
3421: else if (!strncasecmp (ptr, "solid", 5))
3422: val = MathML_ATTR_MLineBelow_VAL_solid_;
3423: else if (!strncasecmp (ptr, "dashed", 6))
3424: val = MathML_ATTR_MLineBelow_VAL_dashed_;
3425: else
3426: val = 0;
3427: /* skip the word that has been processed */
3428: while (*ptr != EOS && *ptr != ' ')
3429: ptr++;
3430: }
3431: }
3432: }
3433: /* get the first cell of that row (ignoring Label cells) */
3434: elType.ElTypeNum = MathML_EL_MTD;
3435: cell = TtaSearchTypedElement (elType, SearchInTree, row);
3436: /* update attribute MLineBelow for all cells in that row */
3437: while (cell)
3438: {
3439: cellType = TtaGetElementType (cell);
3440: /* skip comments and other non mtd elements */
3441: if (cellType.ElTypeNum == MathML_EL_MTD &&
3442: !strcmp (TtaGetSSchemaName (cellType.ElSSchema), "MathML"))
3443: /* that's a mtd element. Process it */
3444: {
1.160 quint 3445: /* is there a rowspan attribute on that cell? */
3446: rowspanAttr = TtaGetAttribute (cell, rowspanType);
3447: if (!rowspanAttr)
3448: rowspan = 1;
3449: else
3450: rowspan = TtaGetAttributeValue (rowspanAttr);
1.161 quint 3451: /* by default, use the value for the current row */
3452: cellVal = val;
3453: if (!delete)
1.160 quint 3454: {
1.161 quint 3455: /* skip rowspan-1 words in the value of attribute rowlines */
3456: if (rowspan > 1)
1.160 quint 3457: {
1.161 quint 3458: spanPtr = ptr;
3459: for (i = 1; i < rowspan && *spanPtr != EOS; i++)
1.160 quint 3460: {
1.161 quint 3461: spanPtr = TtaSkipBlanks (spanPtr);
3462: if (*spanPtr != EOS && *spanPtr != ' ')
3463: {
3464: if (!strncasecmp (spanPtr, "none", 4))
3465: cellVal = 0;
3466: else if (!strncasecmp (spanPtr, "solid", 5))
3467: cellVal = MathML_ATTR_MLineBelow_VAL_solid_;
3468: else if (!strncasecmp (spanPtr, "dashed", 6))
3469: cellVal = MathML_ATTR_MLineBelow_VAL_dashed_;
3470: else
3471: cellVal = 0;
3472: }
3473: /* skip the word that has been processed */
3474: while (*spanPtr != EOS && *spanPtr != ' ')
3475: spanPtr++;
1.160 quint 3476: }
3477: }
3478: }
1.161 quint 3479: if (rowspan == 1)
3480: attrType.AttrTypeNum = MathML_ATTR_MLineBelow;
3481: else
3482: attrType.AttrTypeNum = MathML_ATTR_MLineBelowExt;
1.159 quint 3483: intAttr = TtaGetAttribute (cell, attrType);
1.160 quint 3484: if (cellVal == 0)
1.159 quint 3485: {
3486: if (intAttr)
3487: /* remove attribute MLineBelow */
3488: TtaRemoveAttribute (cell, intAttr, doc);
3489: }
3490: else
3491: /* set attribute MLineBelow */
3492: {
3493: if (!intAttr)
3494: {
3495: intAttr = TtaNewAttribute (attrType);
3496: TtaAttachAttribute (cell, intAttr, doc);
3497: }
1.160 quint 3498: TtaSetAttributeValue (intAttr, cellVal, cell, doc);
1.159 quint 3499: }
3500: }
3501: TtaNextSibling (&cell);
3502: }
3503: row = nextRow;
3504: }
3505: if (value)
3506: TtaFreeMemory (value);
3507: }
3508:
3509: /*----------------------------------------------------------------------
3510: HandleColumnlinesAttribute
3511: An attribute columnlines has been created, updated or deleted (if delete
3512: is TRUE) for element el in document doc. Update attribute MLineOnTheRight
3513: of all cells accordingly.
3514: ----------------------------------------------------------------------*/
3515: void HandleColumnlinesAttribute (Attribute attr, Element el, Document doc,
3516: ThotBool delete)
3517: {
3518: char *value;
3519: char *ptr;
1.161 quint 3520: int length, val, colspan, rowspan, i;
1.159 quint 3521: ElementType elType;
3522: Element row, cell, nextCell;
3523: ThotBool stop;
1.161 quint 3524: AttributeType attrType, colspanType, rowspanType;
3525: Attribute intAttr, spanAttr;
1.159 quint 3526:
3527: elType = TtaGetElementType (el);
3528: if (elType.ElTypeNum != MathML_EL_MTABLE ||
3529: strcmp (TtaGetSSchemaName (elType.ElSSchema), "MathML"))
3530: /* ignore rowlines attribute on mstyle elements */
3531: /* process it only on mtable elements */
3532: return;
3533:
3534: value = NULL;
3535: if (!delete)
3536: {
3537: length = TtaGetTextAttributeLength (attr);
3538: if (length > 0)
3539: {
3540: value = TtaGetMemory (length+1);
3541: value[0] = EOS;
3542: TtaGiveTextAttributeValue (attr, value, &length);
3543: }
3544: }
3545: /* if attribute columnlines is created or updated but has no value, don't
3546: do anything */
3547: if (!delete && !value)
3548: return;
3549:
3550: val = 0;
3551: attrType.AttrSSchema = elType.ElSSchema;
1.160 quint 3552: colspanType.AttrSSchema = elType.ElSSchema;
3553: colspanType.AttrTypeNum = MathML_ATTR_columnspan;
1.161 quint 3554: rowspanType.AttrSSchema = elType.ElSSchema;
3555: rowspanType.AttrTypeNum = MathML_ATTR_rowspan_;
1.159 quint 3556:
3557: /* check all cells in all rows in the table */
3558: elType.ElTypeNum = MathML_EL_TableRow;
3559: row = TtaSearchTypedElement (elType, SearchInTree, el);
3560: while (row)
3561: {
3562: elType = TtaGetElementType (row);
3563: if ((elType.ElTypeNum == MathML_EL_MTR ||
3564: elType.ElTypeNum == MathML_EL_MLABELEDTR) &&
3565: strcmp (TtaGetSSchemaName (elType.ElSSchema), "MathML") == 0)
3566: /* that's a table row. check all its cells */
3567: {
3568: /* start from the beginning of the columnlines attribute */
3569: ptr = value;
3570: val = 0;
3571: /* get the first cell of that row (ignoring Label cells) */
3572: elType.ElTypeNum = MathML_EL_MTD;
3573: cell = TtaSearchTypedElement (elType, SearchInTree, row);
3574: while (cell)
3575: {
3576: /* get the next cell in the current row to check if the current
3577: cell is the last one in the row */
3578: nextCell = cell;
3579: stop = FALSE;
3580: do
3581: {
3582: TtaNextSibling (&nextCell);
3583: if (!nextCell)
3584: stop = TRUE;
3585: else
3586: {
3587: elType = TtaGetElementType (nextCell);
3588: /* skip comments and other non mtd elements */
3589: if (elType.ElTypeNum == MathML_EL_MTD &&
3590: strcmp (TtaGetSSchemaName (elType.ElSSchema), "MathML") == 0)
3591: /* it's the next cell */
3592: stop = TRUE;
3593: }
3594: }
3595: while (!stop);
3596:
1.161 quint 3597: /* is there a rowspan attribute on that cell? */
3598: spanAttr = TtaGetAttribute (cell, rowspanType);
3599: if (!spanAttr)
3600: rowspan = 1;
3601: else
3602: rowspan = TtaGetAttributeValue (spanAttr);
3603:
1.159 quint 3604: if (!nextCell)
3605: /* it's the last cell in the row. It must not have a line
3606: on its right edge. Delete it if there is noe. */
3607: val = 0;
3608: else
3609: /* set the attribute MLineOnTheRight for this cell */
3610: {
3611: if (delete)
3612: val = 0;
3613: else
3614: if (*ptr != EOS)
3615: {
1.161 quint 3616: /* is there a columnspan attribute on that cell? */
3617: spanAttr = TtaGetAttribute (cell, colspanType);
3618: if (!spanAttr)
1.160 quint 3619: colspan = 1;
3620: else
1.161 quint 3621: colspan = TtaGetAttributeValue (spanAttr);
1.160 quint 3622: /* skip (colspan - 1) words in the attribute */
3623: for (i = 1; i <= colspan && *ptr != EOS; i++)
1.159 quint 3624: {
1.160 quint 3625: /* get next word in the attribute value */
3626: ptr = TtaSkipBlanks (ptr);
3627: /* process that word */
3628: if (*ptr != EOS && *ptr != ' ')
3629: {
3630: if (!strncasecmp (ptr, "none", 4))
3631: val = 0;
3632: else if (!strncasecmp (ptr, "solid", 5))
3633: val = MathML_ATTR_MLineOnTheRight_VAL_solid_;
3634: else if (!strncasecmp (ptr, "dashed", 6))
3635: val = MathML_ATTR_MLineOnTheRight_VAL_dashed_;
3636: else
3637: val = 0;
3638: /* skip the word that has been processed */
3639: while (*ptr != EOS && *ptr != ' ')
3640: ptr++;
3641: }
1.159 quint 3642: }
3643: }
3644: }
1.161 quint 3645: if (rowspan == 1)
3646: attrType.AttrTypeNum = MathML_ATTR_MLineOnTheRight;
3647: else
3648: attrType.AttrTypeNum = MathML_ATTR_MLineOnTheRightExt;
1.159 quint 3649: intAttr = TtaGetAttribute (cell, attrType);
3650: if (val == 0)
3651: {
3652: if (intAttr)
3653: /* remove attribute MLineOnTheRight */
3654: TtaRemoveAttribute (cell, intAttr, doc);
3655: }
3656: else
3657: /* set attribute MLineOnTheRight */
3658: {
3659: if (!intAttr)
3660: {
3661: intAttr = TtaNewAttribute (attrType);
3662: TtaAttachAttribute (cell, intAttr, doc);
3663: }
3664: TtaSetAttributeValue (intAttr, val, cell, doc);
3665: }
3666: cell = nextCell;
3667: }
3668: }
3669: TtaNextSibling (&row);
3670: }
3671: if (value)
3672: TtaFreeMemory (value);
3673: }
3674:
3675: /*----------------------------------------------------------------------
1.168 quint 3676: HandleFramespacingAttribute
3677: An attribute framespacing has been created, updated or deleted (if delete
3678: is TRUE) for element el in document doc. Update attribute the padding
3679: properties of the concerned table(s).
3680: ----------------------------------------------------------------------*/
3681: void HandleFramespacingAttribute (Attribute attr, Element el, Document doc,
3682: ThotBool delete)
3683: {
3684: ElementType elType;
3685: char *value, *ptr, valueOfNamedSpace[20];
3686: int length, vertPadding, horizPadding, vertPaddingUnit,
3687: horizPaddingUnit;
3688: Attribute attrFrame;
3689: AttributeType attrType;
3690: PresentationValue pval;
3691: PresentationContext ctxt;
3692: ThotBool vertPaddingReal, horizPaddingReal;
3693:
3694: if ((!delete && !attr) || !el)
3695: return;
3696: elType = TtaGetElementType (el);
3697: if (elType.ElTypeNum != MathML_EL_MTABLE ||
3698: strcmp (TtaGetSSchemaName (elType.ElSSchema), "MathML"))
3699: /* ignore framespacing attribute on mstyle elements */
3700: /* process it only on mtable elements */
3701: return;
3702:
3703: value = NULL;
3704: if (!delete)
3705: {
3706: length = TtaGetTextAttributeLength (attr);
3707: if (length > 0)
3708: {
3709: value = TtaGetMemory (length+1);
3710: value[0] = EOS;
3711: TtaGiveTextAttributeValue (attr, value, &length);
3712: }
3713: }
3714: ctxt = TtaGetSpecificStyleContext (doc);
3715: /* the specific presentation to be created is not a CSS rule */
3716: ctxt->cssSpecificity = 0;
3717: vertPadding = 0;
3718: horizPadding = 0;
3719: vertPaddingUnit = STYLE_UNIT_PT;
3720: horizPaddingUnit = STYLE_UNIT_PT;
3721: vertPaddingReal = FALSE;
3722: horizPaddingReal = FALSE;
3723: /* is there a frame attribute? */
3724: attrType.AttrSSchema = elType.ElSSchema;
3725: attrType.AttrTypeNum = MathML_ATTR_frame;
3726: attrFrame = TtaGetAttribute (el, attrType);
3727: if (!delete && value && attrFrame)
3728: {
3729: ptr = value;
3730: /* parse the first part: horizontal spacing */
3731: ptr = TtaSkipBlanks (ptr);
3732: if (*ptr != EOS)
3733: {
3734: ptr = ConvertNamedSpace (ptr, valueOfNamedSpace);
3735: if (valueOfNamedSpace[0] != EOS)
3736: /* it's a named space */
3737: ptr = ParseCSSUnit (valueOfNamedSpace, &pval);
3738: else
3739: ptr = ParseCSSUnit (ptr, &pval);
3740: if (pval.typed_data.unit != STYLE_UNIT_INVALID)
3741: {
3742: horizPadding = pval.typed_data.value;
3743: horizPaddingUnit = pval.typed_data.unit;
3744: horizPaddingReal = pval.typed_data.real;
3745: /* if there is no second part, the vertical spacing is the same
3746: as the horizontal spacing */
3747: vertPadding = horizPadding;
3748: vertPaddingUnit = horizPaddingUnit;
3749: vertPaddingReal = horizPaddingReal;
3750: /* parse the second part, if any */
3751: ptr = TtaSkipBlanks (ptr);
3752: if (*ptr != EOS)
3753: {
3754: ptr = ConvertNamedSpace (ptr, valueOfNamedSpace);
3755: if (valueOfNamedSpace[0] != EOS)
3756: /* it's a named space */
3757: ptr = ParseCSSUnit (valueOfNamedSpace, &pval);
3758: else
3759: ptr = ParseCSSUnit (ptr, &pval);
3760: if (pval.typed_data.unit != STYLE_UNIT_INVALID)
3761: {
3762: vertPadding = pval.typed_data.value;
3763: vertPaddingUnit = pval.typed_data.unit;
3764: vertPaddingReal = pval.typed_data.real;
3765: }
3766: }
3767: }
3768: }
3769: }
3770: if (delete)
3771: ctxt->destroy = TRUE;
3772: else
3773: {
3774: ctxt->destroy = FALSE;
3775: pval.typed_data.value = horizPadding;
3776: pval.typed_data.unit = horizPaddingUnit;
3777: pval.typed_data.real = horizPaddingReal;
3778: }
3779: TtaSetStylePresentation (PRPaddingLeft, el, NULL, ctxt, pval);
3780: TtaSetStylePresentation (PRPaddingRight, el, NULL, ctxt, pval);
3781: if (!delete)
3782: {
3783: pval.typed_data.value = vertPadding;
3784: pval.typed_data.unit = vertPaddingUnit;
3785: pval.typed_data.real = vertPaddingReal;
3786: }
3787: TtaSetStylePresentation (PRPaddingTop, el, NULL, ctxt, pval);
3788: TtaSetStylePresentation (PRPaddingBottom, el, NULL, ctxt, pval);
3789:
3790: if (value)
3791: TtaFreeMemory (value);
3792: }
3793:
3794: /*----------------------------------------------------------------------
1.169 quint 3795: SetDisplaystyleMathElement
3796: Associate a IntDisplaystyle attribute with element el (which is a
3797: <math> element), and set its value depending on the surrounding context.
3798: ----------------------------------------------------------------------*/
3799: void SetDisplaystyleMathElement (Element el, Document doc)
3800: {
3801: Element parent, sibling;
3802: ElementType elType, parentType;
3803: Attribute attr;
3804: AttributeType attrType;
3805: int display, val;
3806:
3807: display = MathML_ATTR_IntDisplaystyle_VAL_true;
3808: /* is there an attribute display? */
3809: elType = TtaGetElementType (el);
3810: attrType.AttrSSchema = elType.ElSSchema;
3811: attrType.AttrTypeNum = MathML_ATTR_display;
3812: attr = TtaGetAttribute (el, attrType);
3813: if (attr)
3814: /* there is an attribute display. Take its value */
3815: {
3816: val = TtaGetAttributeValue (attr);
3817: if (val == MathML_ATTR_display_VAL_block)
3818: display = MathML_ATTR_IntDisplaystyle_VAL_true;
3819: else
3820: display = MathML_ATTR_IntDisplaystyle_VAL_false;
3821: }
3822: else
3823: /* no attribute display. Look at the context */
3824: {
3825: parent = TtaGetParent (el);
3826: parentType = TtaGetElementType (parent);
3827: if (elType.ElSSchema == parentType.ElSSchema)
3828: /* it's the only <math> element in a MathML document */
3829: display = MathML_ATTR_IntDisplaystyle_VAL_true;
3830: else
3831: /* it's a MathML expression within another vocabulary */
3832: {
3833: if (!strcmp (TtaGetSSchemaName (parentType.ElSSchema), "SVG"))
3834: /* a <math> element in a SVG element */
3835: display = MathML_ATTR_IntDisplaystyle_VAL_true;
3836: else if (!strcmp (TtaGetSSchemaName (parentType.ElSSchema), "HTML"))
3837: /* a <math> element in a HTML element */
3838: {
3839: display = MathML_ATTR_IntDisplaystyle_VAL_false;
3840: if (parentType.ElTypeNum == HTML_EL_BODY ||
3841: parentType.ElTypeNum == HTML_EL_Division)
3842: display = MathML_ATTR_IntDisplaystyle_VAL_true;
3843: else if (parentType.ElTypeNum == HTML_EL_Pseudo_paragraph ||
3844: parentType.ElTypeNum == HTML_EL_Paragraph)
3845: {
3846: sibling = el;
3847: TtaPreviousSibling (&sibling);
3848: if (!sibling)
3849: {
3850: sibling = el;
3851: TtaNextSibling (&sibling);
3852: if (!sibling)
3853: display = MathML_ATTR_IntDisplaystyle_VAL_true;
3854: }
3855: }
3856: }
3857: }
3858: }
3859: /* create the IntDisplastyle attribute and set its value */
3860: attrType.AttrTypeNum = MathML_ATTR_IntDisplaystyle;
3861: attr = TtaGetAttribute (el, attrType);
3862: if (!attr)
3863: {
3864: attr = TtaNewAttribute (attrType);
3865: TtaAttachAttribute (el, attr, doc);
3866: }
3867: TtaSetAttributeValue (attr, display, el, doc);
3868: }
3869:
3870: /*----------------------------------------------------------------------
3871: MathMLElementCreated
3872: The XML parser has just inserted a new element in the abstract tree.
3873: ----------------------------------------------------------------------*/
3874: void MathMLElementCreated (Element el, Document doc)
3875: {
3876: ElementType elType;
3877:
3878: elType = TtaGetElementType (el);
3879: if (elType.ElTypeNum == MathML_EL_MathML)
3880: /* associate a IntDisplaystyle attribute with the element depending
3881: on its context */
3882: SetDisplaystyleMathElement (el, doc);
3883: }
3884:
3885: /*----------------------------------------------------------------------
1.1 cvs 3886: MathMLElementComplete
1.169 quint 3887: Element el has just been completed by the XML parser.
1.1 cvs 3888: Check the Thot structure of the MathML element el.
3889: ----------------------------------------------------------------------*/
1.156 cvs 3890: void MathMLElementComplete (ParserData *context, Element el, int *error)
1.1 cvs 3891: {
1.156 cvs 3892: Document doc;
1.74 cvs 3893: ElementType elType, parentType;
1.1 cvs 3894: Element child, parent, new, prev, next;
1.101 cvs 3895: AttributeType attrType;
3896: Attribute attr;
1.56 cvs 3897: SSchema MathMLSSchema;
3898: ThotBool ok;
1.1 cvs 3899:
1.56 cvs 3900: ok = TRUE;
3901: *error = 0;
1.156 cvs 3902: doc = context->doc;
1.1 cvs 3903: elType = TtaGetElementType (el);
1.2 cvs 3904: MathMLSSchema = GetMathMLSSchema (doc);
1.1 cvs 3905:
1.76 cvs 3906: if (elType.ElSSchema == MathMLSSchema)
1.1 cvs 3907: {
3908: switch (elType.ElTypeNum)
3909: {
1.76 cvs 3910: case MathML_EL_MathML:
3911: /* Create placeholders within the MathML element */
3912: CreatePlaceholders (TtaGetFirstChild (el), doc);
1.132 cvs 3913: break;
1.1 cvs 3914: case MathML_EL_MI:
3915: SetFontstyleAttr (el, doc);
3916: break;
3917: case MathML_EL_MO:
1.22 cvs 3918: SetIntAddSpaceAttr (el, doc);
3919: SetIntVertStretchAttr (el, doc, 0, NULL);
1.58 cvs 3920: /* if the MO element is a child of a MROW (or equivalent) and if it
3921: contains a fence character, transform this MO into MF and
3922: transform the fence character into a Thot SYMBOL */
1.170 quint 3923: CheckFenceLargeOp (el, doc);
1.1 cvs 3924: break;
1.60 cvs 3925: case MathML_EL_MSPACE:
3926: break;
1.39 cvs 3927: case MathML_EL_MROW:
1.55 cvs 3928: /* Create placeholders within the MROW */
3929: CreatePlaceholders (TtaGetFirstChild (el), doc);
1.39 cvs 3930: break;
3931: case MathML_EL_MFRAC:
1.54 cvs 3932: case MathML_EL_BevelledMFRAC:
1.39 cvs 3933: /* end of a fraction. Create a Numerator and a Denominator */
1.56 cvs 3934: ok = CheckMathSubExpressions (el, MathML_EL_Numerator,
3935: MathML_EL_Denominator, 0, doc);
1.39 cvs 3936: break;
3937: case MathML_EL_MSQRT:
1.50 cvs 3938: /* end of a Square Root */
3939: /* Create placeholders within the element */
3940: CreatePlaceholders (TtaGetFirstChild (el), doc);
3941: /* Create a SqrtBase that contains all children of the MSQRT */
1.39 cvs 3942: CreateWrapper (el, MathML_EL_SqrtBase, doc);
3943: break;
1.1 cvs 3944: case MathML_EL_MROOT:
3945: /* end of a Root. Create a RootBase and an Index */
1.56 cvs 3946: ok = CheckMathSubExpressions (el, MathML_EL_RootBase,
3947: MathML_EL_Index, 0, doc);
1.1 cvs 3948: break;
1.50 cvs 3949: case MathML_EL_MENCLOSE:
3950: /* Create placeholders within the element */
3951: CreatePlaceholders (TtaGetFirstChild (el), doc);
3952: break;
1.39 cvs 3953: case MathML_EL_MSTYLE:
3954: case MathML_EL_MERROR:
3955: case MathML_EL_MPADDED:
3956: case MathML_EL_MPHANTOM:
3957: /* Create placeholders within the element */
3958: CreatePlaceholders (TtaGetFirstChild (el), doc);
1.1 cvs 3959: break;
3960: case MathML_EL_MFENCED:
3961: TransformMFENCED (el, doc);
3962: break;
3963: case MathML_EL_MSUB:
3964: /* end of a MSUB. Create Base and Subscript */
1.56 cvs 3965: ok = CheckMathSubExpressions (el, MathML_EL_Base,
3966: MathML_EL_Subscript, 0, doc);
1.59 cvs 3967: SetScriptShift (el, doc, MathML_ATTR_subscriptshift);
1.22 cvs 3968: SetIntVertStretchAttr (el, doc, MathML_EL_Base, NULL);
1.1 cvs 3969: break;
3970: case MathML_EL_MSUP:
3971: /* end of a MSUP. Create Base and Superscript */
1.56 cvs 3972: ok = CheckMathSubExpressions (el, MathML_EL_Base,
3973: MathML_EL_Superscript, 0, doc);
1.59 cvs 3974: SetScriptShift (el, doc, MathML_ATTR_superscriptshift);
1.22 cvs 3975: SetIntVertStretchAttr (el, doc, MathML_EL_Base, NULL);
1.1 cvs 3976: break;
1.39 cvs 3977: case MathML_EL_MSUBSUP:
3978: /* end of a MSUBSUP. Create Base, Subscript, and Superscript */
1.56 cvs 3979: ok = CheckMathSubExpressions (el, MathML_EL_Base,
3980: MathML_EL_Subscript,
3981: MathML_EL_Superscript, doc);
1.59 cvs 3982: SetScriptShift (el, doc, MathML_ATTR_subscriptshift);
3983: SetScriptShift (el, doc, MathML_ATTR_superscriptshift);
1.39 cvs 3984: SetIntVertStretchAttr (el, doc, MathML_EL_Base, NULL);
1.1 cvs 3985: break;
3986: case MathML_EL_MUNDER:
3987: /* end of a MUNDER. Create UnderOverBase, and Underscript */
1.56 cvs 3988: ok = CheckMathSubExpressions (el, MathML_EL_UnderOverBase,
3989: MathML_EL_Underscript, 0, doc);
1.22 cvs 3990: SetIntHorizStretchAttr (el, doc);
3991: SetIntVertStretchAttr (el, doc, MathML_EL_UnderOverBase, NULL);
1.169 quint 3992: SetIntMovelimitsAttr (el, doc);
1.1 cvs 3993: break;
3994: case MathML_EL_MOVER:
3995: /* end of a MOVER. Create UnderOverBase, and Overscript */
1.56 cvs 3996: ok = CheckMathSubExpressions (el, MathML_EL_UnderOverBase,
3997: MathML_EL_Overscript, 0, doc);
1.22 cvs 3998: SetIntHorizStretchAttr (el, doc);
3999: SetIntVertStretchAttr (el, doc, MathML_EL_UnderOverBase, NULL);
1.169 quint 4000: SetIntMovelimitsAttr (el, doc);
1.1 cvs 4001: break;
1.39 cvs 4002: case MathML_EL_MUNDEROVER:
4003: /* end of a MUNDEROVER. Create UnderOverBase, Underscript, and
4004: Overscript */
1.56 cvs 4005: ok = CheckMathSubExpressions (el, MathML_EL_UnderOverBase,
4006: MathML_EL_Underscript,
4007: MathML_EL_Overscript, doc);
1.39 cvs 4008: SetIntHorizStretchAttr (el, doc);
4009: SetIntVertStretchAttr (el, doc, MathML_EL_UnderOverBase, NULL);
1.169 quint 4010: SetIntMovelimitsAttr (el, doc);
1.39 cvs 4011: break;
1.1 cvs 4012: case MathML_EL_MMULTISCRIPTS:
4013: /* end of a MMULTISCRIPTS. Create all elements defined in the
4014: MathML S schema */
4015: BuildMultiscript (el, doc);
1.5 cvs 4016: break;
4017: case MathML_EL_MTABLE:
4018: /* end of a MTABLE. Create all elements defined in the MathML S
4019: schema */
1.64 cvs 4020: CheckMTable (el, doc, TRUE);
1.101 cvs 4021: /* if the table has a rowalign attribute, process it */
4022: attrType.AttrSSchema = MathMLSSchema;
4023: attrType.AttrTypeNum = MathML_ATTR_rowalign;
4024: attr = TtaGetAttribute (el, attrType);
4025: if (attr)
4026: HandleRowalignAttribute (attr, el, doc, FALSE);
4027: /* if the table has a columnalign attribute, process it */
4028: attrType.AttrTypeNum = MathML_ATTR_columnalign;
4029: attr = TtaGetAttribute (el, attrType);
4030: if (attr)
1.108 cvs 4031: HandleColalignAttribute (attr, el, doc, FALSE, FALSE);
1.167 quint 4032: /* process the rowspacing attribute, or set the top padding of the
4033: first row and the bottom padding of the last row to 0. */
4034: attrType.AttrSSchema = MathMLSSchema;
4035: attrType.AttrTypeNum = MathML_ATTR_rowspacing;
4036: attr = TtaGetAttribute (el, attrType);
4037: HandleRowspacingAttribute (attr, el, doc, FALSE);
4038: /* process the columnspacing attribute, or set the left padding of
4039: the first column and the right padding of the last column to 0 */
4040: attrType.AttrSSchema = MathMLSSchema;
4041: attrType.AttrTypeNum = MathML_ATTR_columnspacing;
4042: attr = TtaGetAttribute (el, attrType);
4043: HandleColumnspacingAttribute (attr, el, doc, FALSE);
1.159 quint 4044: /* if the table has a rowlines attribute, process it */
4045: attrType.AttrSSchema = MathMLSSchema;
4046: attrType.AttrTypeNum = MathML_ATTR_rowlines;
4047: attr = TtaGetAttribute (el, attrType);
4048: if (attr)
1.167 quint 4049: HandleRowlinesAttribute (attr, el, doc, FALSE);
1.159 quint 4050: /* if the table has a columnlines attribute, process it */
4051: attrType.AttrTypeNum = MathML_ATTR_columnlines;
4052: attr = TtaGetAttribute (el, attrType);
4053: if (attr)
4054: HandleColumnlinesAttribute (attr, el, doc, FALSE);
1.101 cvs 4055: break;
4056: case MathML_EL_MTR:
4057: /* if the row has a columnalign attribute, process it */
4058: attrType.AttrSSchema = MathMLSSchema;
4059: attrType.AttrTypeNum = MathML_ATTR_columnalign;
4060: attr = TtaGetAttribute (el, attrType);
4061: if (attr)
1.108 cvs 4062: HandleColalignAttribute (attr, el, doc, FALSE, TRUE);
1.101 cvs 4063: break;
4064: case MathML_EL_MLABELEDTR:
4065: /* if the row has a columnalign attribute, process it */
4066: attrType.AttrSSchema = MathMLSSchema;
4067: attrType.AttrTypeNum = MathML_ATTR_columnalign;
4068: attr = TtaGetAttribute (el, attrType);
4069: if (attr)
1.108 cvs 4070: HandleColalignAttribute (attr, el, doc, FALSE, TRUE);
1.1 cvs 4071: break;
1.39 cvs 4072: case MathML_EL_MTD:
4073: /* Create placeholders within the table cell */
4074: CreatePlaceholders (TtaGetFirstChild (el), doc);
1.46 cvs 4075: break;
1.39 cvs 4076: case MathML_EL_MACTION:
4077: /* Create placeholders within the MACTION element */
4078: CreatePlaceholders (TtaGetFirstChild (el), doc);
1.1 cvs 4079: break;
4080: default:
4081: break;
4082: }
4083: parent = TtaGetParent (el);
1.118 cvs 4084: if (parent)
4085: {
4086: parentType = TtaGetElementType (parent);
4087: if (parentType.ElSSchema != elType.ElSSchema)
4088: /* root of a MathML tree, Create a MathML element if there is no */
4089: if (elType.ElTypeNum != MathML_EL_MathML)
4090: {
4091: elType.ElSSchema = MathMLSSchema;
4092: elType.ElTypeNum = MathML_EL_MathML;
4093: new = TtaNewElement (doc, elType);
4094: TtaInsertSibling (new, el, TRUE, doc);
4095: next = el;
4096: TtaNextSibling (&next);
4097: TtaRemoveTree (el, doc);
4098: TtaInsertFirstChild (&el, new, doc);
4099: prev = el;
4100: while (next != NULL)
4101: {
4102: child = next;
4103: TtaNextSibling (&next);
4104: TtaRemoveTree (child, doc);
4105: TtaInsertSibling (child, prev, FALSE, doc);
4106: prev = child;
4107: }
1.169 quint 4108: /* associate a IntDisplaystyle attribute with the element
4109: depending on its context */
4110: SetDisplaystyleMathElement (new, doc);
1.118 cvs 4111: /* Create placeholders within the MathML element */
1.169 quint 4112: CreatePlaceholders (new, doc);
1.118 cvs 4113: }
4114: }
1.1 cvs 4115: }
1.56 cvs 4116: if (!ok)
4117: /* send an error message */
4118: *error = 1;
1.1 cvs 4119: }
4120:
4121: /*----------------------------------------------------------------------
1.126 cvs 4122: UnknownMathMLNameSpace
1.149 cvs 4123: The element doesn't belong to a supported namespace
1.126 cvs 4124: ----------------------------------------------------------------------*/
1.149 cvs 4125: void UnknownMathMLNameSpace (ParserData *context,
4126: Element *unknownEl,
4127: char* content)
1.126 cvs 4128: {
4129: ElementType elType;
1.149 cvs 4130: Element elText;
1.126 cvs 4131:
4132: /* Create a new Invalid_element */
4133: elType.ElSSchema = GetXMLSSchema (MATH_TYPE, context->doc);
4134: elType.ElTypeNum = MathML_EL_Unknown_namespace;
1.149 cvs 4135: *unknownEl = TtaNewElement (context->doc, elType);
4136: if (*unknownEl != NULL)
1.126 cvs 4137: {
1.149 cvs 4138: XmlSetElemLineNumber (*unknownEl);
4139: InsertXmlElement (unknownEl);
1.126 cvs 4140: context->lastElementClosed = TRUE;
4141: elType.ElTypeNum = MathML_EL_TEXT_UNIT;
4142: elText = TtaNewElement (context->doc, elType);
4143: XmlSetElemLineNumber (elText);
1.149 cvs 4144: TtaInsertFirstChild (&elText, *unknownEl, context->doc);
1.126 cvs 4145: TtaSetTextContent (elText, content, context->language, context->doc);
4146: TtaSetAccessRight (elText, ReadOnly, context->doc);
4147: }
4148: }
4149:
4150: /*----------------------------------------------------------------------
1.24 cvs 4151: SetFontfamily
4152: -----------------------------------------------------------------------*/
1.120 cvs 4153: void SetFontfamily (Document doc, Element el, char *value)
1.24 cvs 4154: {
4155: #define buflen 50
1.116 cvs 4156: char css_command[buflen+20];
1.24 cvs 4157:
1.116 cvs 4158: sprintf (css_command, "font-family: %s", value);
1.72 cvs 4159: ParseHTMLSpecificStyle (el, css_command, doc, 0, FALSE);
1.24 cvs 4160: }
4161:
4162: /*----------------------------------------------------------------------
1.83 cvs 4163: MathMLlinethickness
4164: The MathML attribute linthickness is associated with element el. Generate
4165: the corresponding style property for this element.
4166: -----------------------------------------------------------------------*/
1.120 cvs 4167: void MathMLlinethickness (Document doc, Element el, char *value)
1.83 cvs 4168: {
4169: #define buflen 50
1.116 cvs 4170: char css_command[buflen+20];
1.83 cvs 4171:
1.116 cvs 4172: if (strcmp (value, "thin") == 0)
4173: strcpy (value, "1pt");
4174: else if (strcmp (value, "medium") == 0)
4175: strcpy (value, "1pt");
4176: else if (strcmp (value, "thick") == 0)
4177: strcpy (value, "2pt");
4178: sprintf (css_command, "stroke-width: %s", value);
1.83 cvs 4179: ParseHTMLSpecificStyle (el, css_command, doc, 0, FALSE);
4180: }
4181:
4182: /*----------------------------------------------------------------------
1.58 cvs 4183: MathMLAttrToStyleProperty
4184: The MathML attribute attr is associated with element el. Generate
4185: the corresponding style property for this element.
1.24 cvs 4186: -----------------------------------------------------------------------*/
1.138 cvs 4187: void MathMLAttrToStyleProperty (Document doc, Element el, char *value,
4188: int attr)
1.24 cvs 4189: {
1.167 quint 4190: char css_command[buflen+20], namedSpaceVal[20];
1.141 quint 4191: int i;
1.58 cvs 4192:
4193: switch (attr)
4194: {
4195: case MathML_ATTR_fontsize:
1.116 cvs 4196: sprintf (css_command, "font-size: %s", value);
1.58 cvs 4197: break;
1.93 cvs 4198: case MathML_ATTR_mathsize:
1.116 cvs 4199: if (strcmp (value, "small") == 0)
4200: strcpy (value, "80%");
4201: else if (strcmp (value, "normal") == 0)
4202: strcpy (value, "100%");
4203: else if (strcmp (value, "big") == 0)
4204: strcpy (value, "125%");
4205: sprintf (css_command, "font-size: %s", value);
1.93 cvs 4206: break;
1.58 cvs 4207: case MathML_ATTR_lspace:
4208: case MathML_ATTR_rspace:
1.141 quint 4209: if (attr == MathML_ATTR_lspace)
4210: strcpy (css_command, "padding-left: ");
4211: else
4212: strcpy (css_command, "padding-right: ");
1.167 quint 4213: ConvertNamedSpace (value, namedSpaceVal);
4214: if (namedSpaceVal[0] != EOS)
4215: /* it's a named space */
4216: strcat (css_command, namedSpaceVal);
1.141 quint 4217: else
4218: {
4219: strcat (css_command, value);
4220: /* does the value contain an unit at the end? */
4221: i = strlen (value) - 1;
4222: if ((value[i] <= '9' && value[i] >= '0') ||
4223: value[i] == '.')
4224: /* it's just a number. Add the (implicit) unit: em */
4225: strcat (css_command, "em");
4226: }
1.58 cvs 4227: break;
4228: }
1.72 cvs 4229: ParseHTMLSpecificStyle (el, css_command, doc, 0, FALSE);
1.24 cvs 4230: }
4231:
4232: /*----------------------------------------------------------------------
1.60 cvs 4233: MathMLSetScriptLevel
4234: A scriptlevel attribute with value value is associated with element el.
4235: Generate the corresponding style property for this element.
4236: -----------------------------------------------------------------------*/
1.120 cvs 4237: void MathMLSetScriptLevel (Document doc, Element el, char *value)
1.60 cvs 4238: {
4239: PresentationValue pval;
4240: PresentationContext ctxt;
4241: ThotBool relative;
4242: int percentage;
4243:
4244: ctxt = TtaGetSpecificStyleContext (doc);
4245: if (!value)
4246: /* remove the presentation rule */
4247: {
4248: ctxt->destroy = TRUE;
1.75 cvs 4249: pval.typed_data.value = 0;
1.60 cvs 4250: TtaSetStylePresentation (PRSize, el, NULL, ctxt, pval);
4251: }
4252: else
4253: {
4254: ctxt->destroy = FALSE;
4255: /* parse the attribute value (an optional sign and an integer) */
1.119 cvs 4256: value = TtaSkipBlanks (value);
1.60 cvs 4257: relative = (value[0] == '-' || value[0] == '+');
4258: value = ParseCSSUnit (value, &pval);
4259: if (pval.typed_data.unit != STYLE_UNIT_REL &&
4260: pval.typed_data.real)
4261: /* this is an error: it should be an integer without any unit name */
4262: /* error */;
4263: else
4264: {
4265: if (relative)
4266: {
1.63 cvs 4267: percentage = 100;
1.60 cvs 4268: if (pval.typed_data.value == 0)
4269: /* scriptlevel="+0" */
4270: percentage = 100;
4271: else if (pval.typed_data.value == 1)
4272: /* scriptlevel="+1" */
4273: percentage = 71;
4274: else if (pval.typed_data.value == 2)
4275: /* scriptlevel="+2" */
4276: percentage = 50;
4277: else if (pval.typed_data.value >= 3)
4278: /* scriptlevel="+3" or more */
4279: percentage = 35;
4280: else if (pval.typed_data.value == -1)
4281: /* scriptlevel="-1" */
4282: percentage = 141;
4283: else if (pval.typed_data.value == -2)
4284: /* scriptlevel="-2" */
4285: percentage = 200;
4286: else if (pval.typed_data.value <= -3)
4287: /* scriptlevel="-3" or less */
4288: percentage = 282;
4289: pval.typed_data.value = percentage;
4290: pval.typed_data.unit = STYLE_UNIT_PERCENT;
1.78 cvs 4291: /* the specific presentation to be created is not a CSS rule */
1.147 quint 4292: ctxt->cssSpecificity = 0;
1.60 cvs 4293: TtaSetStylePresentation (PRSize, el, NULL, ctxt, pval);
4294: }
4295: else
4296: /* absolute value */
4297: {
4298: /**** ****/;
4299: }
4300: }
4301: }
4302: TtaFreeMemory (ctxt);
4303: }
4304:
4305: /*----------------------------------------------------------------------
4306: MathMLSpacingAttr
4307: The MathML attribute attr (height, width or depth) is associated
4308: with element el (a mspace or mpadding).
4309: If value is not NULL, generate the corresponding Thot presentation rule for
4310: the element.
4311: If value is NULL, remove the corresponding Thot presentation rule.
4312: -----------------------------------------------------------------------*/
1.120 cvs 4313: void MathMLSpacingAttr (Document doc, Element el, char *value, int attr)
1.60 cvs 4314: {
4315: ElementType elType;
4316: PresentationValue pval;
4317: PresentationContext ctxt;
4318: int ruleType;
4319:
4320: /* provisionally, handles only mspace elements */
4321: elType = TtaGetElementType (el);
1.96 cvs 4322: if (elType.ElTypeNum != MathML_EL_MSPACE &&
1.97 cvs 4323: elType.ElTypeNum != MathML_EL_MPADDED &&
4324: elType.ElTypeNum != MathML_EL_MTABLE)
1.60 cvs 4325: return;
4326: switch (attr)
4327: {
4328: case MathML_ATTR_width_:
4329: ruleType = PRWidth;
4330: break;
4331: case MathML_ATTR_height_:
4332: ruleType = PRPaddingTop;
4333: break;
4334: case MathML_ATTR_depth_:
4335: ruleType = PRPaddingBottom;
4336: break;
4337: default:
4338: return;
4339: }
4340: ctxt = TtaGetSpecificStyleContext (doc);
1.116 cvs 4341: if (!value || (strcmp (value, "auto") == 0))
1.60 cvs 4342: /* remove the presentation rule */
4343: {
4344: ctxt->destroy = TRUE;
1.75 cvs 4345: pval.typed_data.value = 0;
1.60 cvs 4346: TtaSetStylePresentation (ruleType, el, NULL, ctxt, pval);
4347: }
4348: else
4349: {
4350: ctxt->destroy = FALSE;
4351: /* parse the attribute value (a number followed by a unit) */
1.119 cvs 4352: value = TtaSkipBlanks (value);
1.60 cvs 4353: value = ParseCSSUnit (value, &pval);
4354: /***** we should accept namedspace for width *****/
4355: if (pval.typed_data.unit != STYLE_UNIT_INVALID)
1.78 cvs 4356: {
4357: /* the specific presentation to be created is not a CSS rule */
1.147 quint 4358: ctxt->cssSpecificity = 0;
1.78 cvs 4359: TtaSetStylePresentation (ruleType, el, NULL, ctxt, pval);
4360: }
1.60 cvs 4361: }
4362: TtaFreeMemory (ctxt);
4363: }
4364:
4365: /*----------------------------------------------------------------------
1.153 quint 4366: MathMLSetDisplayAttr
1.169 quint 4367: The MathML attribute display is associated with element el (which
4368: should be a <math> element).
4369: Generate the corresponding internal attribute.
1.153 quint 4370: ----------------------------------------------------------------------*/
4371: void MathMLSetDisplayAttr (Element el, Attribute attr, Document doc,
4372: ThotBool delete)
4373: {
1.169 quint 4374: int val, intVal, attrKind;
4375: AttributeType attrType;
4376: Attribute intAttr;
4377:
4378: if (delete)
4379: SetDisplaystyleMathElement (el, doc);
4380: else
4381: {
4382: val = TtaGetAttributeValue (attr);
4383: if (val == MathML_ATTR_display_VAL_block)
4384: intVal = MathML_ATTR_IntDisplaystyle_VAL_true;
4385: else
4386: intVal = MathML_ATTR_IntDisplaystyle_VAL_false;
4387: TtaGiveAttributeType (attr, &attrType, &attrKind);
4388: attrType.AttrTypeNum = MathML_ATTR_IntDisplaystyle;
4389: intAttr = TtaGetAttribute (el, attrType);
4390: /* create the IntDisplaystyle attribute and set its value */
4391: if (!intAttr)
4392: {
4393: intAttr = TtaNewAttribute (attrType);
4394: TtaAttachAttribute (el, intAttr, doc);
4395: }
4396: TtaSetAttributeValue (intAttr, intVal, el, doc);
4397: }
4398: }
4399:
4400: /*----------------------------------------------------------------------
4401: MathMLSetDisplaystyleAttr
4402: The attribute displaystyle is associated with element el (which
4403: should be a <mstyle> or a <mtable> element).
4404: GenerateSet the corresponding internal attribute accordingly.
4405: ----------------------------------------------------------------------*/
4406: void MathMLSetDisplaystyleAttr (Element el, Attribute attr, Document doc,
4407: ThotBool delete)
4408: {
4409: int val, intVal;
4410: ElementType elType;
4411: AttributeType attrType;
4412: Attribute intAttr;
1.153 quint 4413:
1.169 quint 4414: /* get the internal attribute */
4415: elType = TtaGetElementType (el);
4416: attrType.AttrSSchema = elType.ElSSchema;
4417: attrType.AttrTypeNum = MathML_ATTR_IntDisplaystyle;
4418: intAttr = TtaGetAttribute (el, attrType);
4419: if (delete)
4420: /* attribute displaystyle has been deleted */
4421: {
4422: if (elType.ElTypeNum == MathML_EL_MSTYLE)
4423: /* it's a mstyle element. Just remove the internal attribute */
4424: {
4425: if (intAttr)
4426: TtaRemoveAttribute (el, intAttr, doc);
4427: return;
4428: }
4429: else if (elType.ElTypeNum == MathML_EL_MTABLE)
4430: /* it's a matable element, set the default value (false) */
4431: intVal = MathML_ATTR_IntDisplaystyle_VAL_false;
4432: else
4433: return;
4434: }
4435: else
4436: {
4437: val = TtaGetAttributeValue (attr);
4438: if (val == MathML_ATTR_displaystyle_VAL_true)
4439: intVal = MathML_ATTR_IntDisplaystyle_VAL_true;
4440: else
4441: intVal = MathML_ATTR_IntDisplaystyle_VAL_false;
4442: }
4443: /* create the IntDisplaystyle attribute if needed and set its value */
4444: if (!intAttr)
4445: {
4446: intAttr = TtaNewAttribute (attrType);
4447: TtaAttachAttribute (el, intAttr, doc);
4448: }
4449: TtaSetAttributeValue (intAttr, intVal, el, doc);
1.153 quint 4450: }
4451:
4452: /*----------------------------------------------------------------------
1.1 cvs 4453: MathMLAttributeComplete
1.58 cvs 4454: The XML parser has completed parsing attribute attr (as well as its value)
4455: that is associated with element el in document doc.
1.1 cvs 4456: ----------------------------------------------------------------------*/
1.120 cvs 4457: void MathMLAttributeComplete (Attribute attr, Element el, Document doc)
1.1 cvs 4458: {
1.134 cvs 4459: AttributeType attrType, depAttrType;
1.23 cvs 4460: int attrKind;
1.50 cvs 4461: ElementType elType;
1.120 cvs 4462: char *value;
1.50 cvs 4463: int val, length;
1.101 cvs 4464: Attribute intAttr;
1.169 quint 4465:
1.58 cvs 4466: /* first get the type of that attribute */
1.23 cvs 4467: TtaGiveAttributeType (attr, &attrType, &attrKind);
1.153 quint 4468:
1.54 cvs 4469: if (attrType.AttrTypeNum == MathML_ATTR_bevelled)
1.58 cvs 4470: /* it's a bevelled attribute */
1.50 cvs 4471: {
4472: val = TtaGetAttributeValue (attr);
1.54 cvs 4473: if (val == MathML_ATTR_bevelled_VAL_true)
4474: /* bevelled = true. Transform MFRAC into BevelledMFRAC */
1.50 cvs 4475: {
4476: elType = TtaGetElementType (el);
4477: if (elType.ElTypeNum == MathML_EL_MFRAC)
1.54 cvs 4478: ChangeTypeOfElement (el, doc, MathML_EL_BevelledMFRAC);
1.50 cvs 4479: }
4480: }
1.101 cvs 4481:
4482: else if (attrType.AttrTypeNum == MathML_ATTR_rowalign_mtr)
4483: {
4484: /* create an equivalent IntRowAlign attribute on the same element */
4485: attrType.AttrTypeNum = MathML_ATTR_IntRowAlign;
4486: intAttr = TtaGetAttribute (el, attrType);
4487: if (!intAttr)
4488: /* no IntRowAlign attribute, create one */
4489: {
4490: intAttr = TtaNewAttribute (attrType);
4491: TtaAttachAttribute (el, intAttr, doc);
4492: }
4493: val = TtaGetAttributeValue (attr);
4494: TtaSetAttributeValue (intAttr, val, el, doc);
4495: }
4496:
4497: else if (attrType.AttrTypeNum == MathML_ATTR_columnalign_mtd)
4498: {
4499: /* create an equivalent IntColAlign attribute on the same element */
4500: attrType.AttrTypeNum = MathML_ATTR_IntColAlign;
4501: intAttr = TtaGetAttribute (el, attrType);
4502: if (!intAttr)
4503: /* no IntColAlign attribute, create one */
4504: {
4505: intAttr = TtaNewAttribute (attrType);
4506: TtaAttachAttribute (el, intAttr, doc);
4507: }
4508: val = TtaGetAttributeValue (attr);
4509: TtaSetAttributeValue (intAttr, val, el, doc);
4510: }
4511:
1.159 quint 4512: /* don't handle attributes columnalign, rowalign, columnlines and rowlines
4513: now: the table or the row is not complete yet. Handle them when the
4514: element is complete.
1.104 cvs 4515: */
1.153 quint 4516:
4517: else if (attrType.AttrTypeNum == MathML_ATTR_display)
1.169 quint 4518: /* it's a display attribute on element <math> */
1.153 quint 4519: MathMLSetDisplayAttr (el, attr, doc, FALSE);
1.169 quint 4520:
4521: else if (attrType.AttrTypeNum == MathML_ATTR_displaystyle)
4522: /* it's a displaystyle attribute */
4523: MathMLSetDisplaystyleAttr (el, attr, doc, FALSE);
1.138 cvs 4524:
1.168 quint 4525: else if (attrType.AttrTypeNum == MathML_ATTR_framespacing)
4526: /* it's a framespacing attribute */
4527: HandleFramespacingAttribute (attr, el, doc, FALSE);
4528:
1.138 cvs 4529: else if (attrType.AttrTypeNum == MathML_ATTR_Language)
4530: {
4531: if (el == TtaGetRootElement (doc))
4532: /* it's the lang attribute on the root element */
4533: /* set the RealLang attribute */
4534: {
4535: depAttrType.AttrSSchema = attrType.AttrSSchema ;
4536: depAttrType.AttrTypeNum = MathML_ATTR_RealLang;
4537: if (!TtaGetAttribute (el, depAttrType))
4538: /* it's not present. Add it */
4539: {
4540: intAttr = TtaNewAttribute (depAttrType);
4541: TtaAttachAttribute (el, intAttr, doc);
4542: TtaSetAttributeValue (intAttr, MathML_ATTR_RealLang_VAL_Yes_,
4543: el, doc);
4544: }
4545: }
4546: }
1.101 cvs 4547:
1.50 cvs 4548: else if (attrType.AttrTypeNum == MathML_ATTR_color ||
1.93 cvs 4549: attrType.AttrTypeNum == MathML_ATTR_mathcolor ||
4550: attrType.AttrTypeNum == MathML_ATTR_background_ ||
4551: attrType.AttrTypeNum == MathML_ATTR_mathbackground ||
4552: attrType.AttrTypeNum == MathML_ATTR_fontsize ||
4553: attrType.AttrTypeNum == MathML_ATTR_mathsize ||
4554: attrType.AttrTypeNum == MathML_ATTR_fontfamily ||
4555: attrType.AttrTypeNum == MathML_ATTR_linethickness ||
4556: attrType.AttrTypeNum == MathML_ATTR_lspace ||
4557: attrType.AttrTypeNum == MathML_ATTR_rspace ||
4558: attrType.AttrTypeNum == MathML_ATTR_scriptlevel ||
4559: attrType.AttrTypeNum == MathML_ATTR_width_ ||
4560: attrType.AttrTypeNum == MathML_ATTR_height_ ||
1.168 quint 4561: attrType.AttrTypeNum == MathML_ATTR_depth_)
1.93 cvs 4562: {
1.23 cvs 4563: length = TtaGetTextAttributeLength (attr);
4564: if (length >= buflen)
4565: length = buflen - 1;
4566: if (length > 0)
4567: {
1.116 cvs 4568: value = TtaGetMemory (buflen);
1.33 cvs 4569: value[0] = EOS;
4570: TtaGiveTextAttributeValue (attr, value, &length);
4571: switch (attrType.AttrTypeNum)
4572: {
4573: case MathML_ATTR_color:
1.134 cvs 4574: /* deprecated attribute */
4575: /* if the same element has a mathcolor attribute, ignore
4576: the color attribute */
4577: depAttrType.AttrSSchema = attrType.AttrSSchema ;
4578: depAttrType.AttrTypeNum = MathML_ATTR_mathcolor;
4579: if (!TtaGetAttribute (el, depAttrType))
4580: HTMLSetForegroundColor (doc, el, value);
4581: break;
1.93 cvs 4582: case MathML_ATTR_mathcolor:
1.24 cvs 4583: HTMLSetForegroundColor (doc, el, value);
4584: break;
1.33 cvs 4585: case MathML_ATTR_background_:
1.134 cvs 4586: /* deprecated attribute */
4587: /* if the same element has a mathbackground attribute, ignore
4588: the background attribute */
4589: depAttrType.AttrSSchema = attrType.AttrSSchema;
4590: depAttrType.AttrTypeNum = MathML_ATTR_mathbackground;
4591: if (!TtaGetAttribute (el, depAttrType))
4592: HTMLSetBackgroundColor (doc, el, value);
4593: break;
1.93 cvs 4594: case MathML_ATTR_mathbackground:
1.24 cvs 4595: HTMLSetBackgroundColor (doc, el, value);
4596: break;
1.33 cvs 4597: case MathML_ATTR_fontfamily:
1.24 cvs 4598: SetFontfamily (doc, el, value);
1.83 cvs 4599: break;
4600: case MathML_ATTR_linethickness:
4601: MathMLlinethickness (doc, el, value);
1.58 cvs 4602: break;
4603: case MathML_ATTR_fontsize:
1.134 cvs 4604: /* deprecated attribute */
4605: /* if the same element has a mathsize attribute, ignore
4606: the fontsize attribute */
4607: depAttrType.AttrSSchema = attrType.AttrSSchema;
4608: depAttrType.AttrTypeNum = MathML_ATTR_mathsize;
4609: if (!TtaGetAttribute (el, depAttrType))
4610: MathMLAttrToStyleProperty (doc, el, value,
4611: attrType.AttrTypeNum);
4612: break;
1.93 cvs 4613: case MathML_ATTR_mathsize:
1.58 cvs 4614: case MathML_ATTR_lspace:
4615: case MathML_ATTR_rspace:
1.60 cvs 4616: MathMLAttrToStyleProperty (doc, el, value,attrType.AttrTypeNum);
4617: break;
4618: case MathML_ATTR_scriptlevel:
4619: MathMLSetScriptLevel (doc, el, value);
4620: break;
4621: case MathML_ATTR_width_:
4622: case MathML_ATTR_height_:
4623: case MathML_ATTR_depth_:
4624: MathMLSpacingAttr (doc, el, value, attrType.AttrTypeNum);
1.59 cvs 4625: break;
4626: default:
1.24 cvs 4627: break;
1.33 cvs 4628: }
4629: TtaFreeMemory (value);
1.23 cvs 4630: }
4631: }
1.1 cvs 4632: }
4633:
4634: /*----------------------------------------------------------------------
4635: MathMLGetDTDName
4636: ----------------------------------------------------------------------*/
1.120 cvs 4637: void MathMLGetDTDName (char *DTDname, char *elementName)
1.1 cvs 4638: {
4639: /* no other DTD allowed within MathML elements */
1.116 cvs 4640: strcpy (DTDname, "");
1.1 cvs 4641: }
4642:
4643: /* end of module */
Webmaster
![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to MathMLbuilder.c CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [Public] / Amaya / amaya