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[wxWidgets.git] / src / html / m_tables.cpp
1 /////////////////////////////////////////////////////////////////////////////
2 // Name: src/html/m_tables.cpp
3 // Purpose: wxHtml module for tables
4 // Author: Vaclav Slavik
5 // RCS-ID: $Id$
6 // Copyright: (c) 1999 Vaclav Slavik
7 // Licence: wxWindows licence
8 /////////////////////////////////////////////////////////////////////////////
9
10 #include "wx/wxprec.h"
11
12 #ifdef __BORLANDC__
13 #pragma hdrstop
14 #endif
15
16 #if wxUSE_HTML && wxUSE_STREAMS
17
18 #ifndef WX_PRECOMP
19 #include "wx/wxcrtvararg.h"
20 #endif
21
22 #include "wx/html/forcelnk.h"
23 #include "wx/html/m_templ.h"
24
25 #include "wx/html/htmlcell.h"
26
27 FORCE_LINK_ME(m_tables)
28
29
30 #define TABLE_BORDER_CLR_1 wxColour(0xC5, 0xC2, 0xC5)
31 #define TABLE_BORDER_CLR_2 wxColour(0x62, 0x61, 0x62)
32
33
34 //-----------------------------------------------------------------------------
35 // wxHtmlTableCell
36 //-----------------------------------------------------------------------------
37
38
39 struct colStruct
40 {
41 int width, units;
42 // width of the column either in pixels or percents
43 // ('width' is the number, 'units' determines its meaning)
44 int minWidth, maxWidth;
45 // minimal/maximal column width. This is needed by HTML 4.0
46 // layouting algorithm and can be determined by trying to
47 // layout table cells with width=1 and width=infinity
48 int leftpos, pixwidth, maxrealwidth;
49 // temporary (depends on actual width of table)
50 };
51
52 enum cellState
53 {
54 cellSpan,
55 cellUsed,
56 cellFree
57 };
58
59 struct cellStruct
60 {
61 wxHtmlContainerCell *cont;
62 int colspan, rowspan;
63 int minheight, valign;
64 cellState flag;
65 bool nowrap;
66 };
67
68
69 class wxHtmlTableCell : public wxHtmlContainerCell
70 {
71 protected:
72 /* These are real attributes: */
73
74 // should we draw borders or not?
75 bool m_HasBorders;
76 // number of columns; rows
77 int m_NumCols, m_NumRows;
78 // array of column information
79 colStruct *m_ColsInfo;
80 // 2D array of all cells in the table : m_CellInfo[row][column]
81 cellStruct **m_CellInfo;
82 // spaces between cells
83 int m_Spacing;
84 // cells internal indentation
85 int m_Padding;
86
87 private:
88 /* ...and these are valid only when parsing the table: */
89
90 // number of actual column (ranging from 0..m_NumCols)
91 int m_ActualCol, m_ActualRow;
92
93 // default values (for table and row):
94 wxColour m_tBkg, m_rBkg;
95 wxString m_tValign, m_rValign;
96
97 double m_PixelScale;
98
99
100 public:
101 wxHtmlTableCell(wxHtmlContainerCell *parent, const wxHtmlTag& tag, double pixel_scale = 1.0);
102 virtual ~wxHtmlTableCell();
103
104 virtual void RemoveExtraSpacing(bool top, bool bottom);
105
106 virtual void Layout(int w);
107
108 void AddRow(const wxHtmlTag& tag);
109 void AddCell(wxHtmlContainerCell *cell, const wxHtmlTag& tag);
110
111 private:
112 // Reallocates memory to given number of cols/rows
113 // and changes m_NumCols/m_NumRows value to reflect this change
114 // NOTE! You CAN'T change m_NumCols/m_NumRows before calling this!!
115 void ReallocCols(int cols);
116 void ReallocRows(int rows);
117
118 // Computes minimal and maximal widths of columns. Needs to be called
119 // only once, before first Layout().
120 void ComputeMinMaxWidths();
121
122 wxDECLARE_NO_COPY_CLASS(wxHtmlTableCell);
123 };
124
125
126
127 wxHtmlTableCell::wxHtmlTableCell(wxHtmlContainerCell *parent, const wxHtmlTag& tag, double pixel_scale)
128 : wxHtmlContainerCell(parent)
129 {
130 m_PixelScale = pixel_scale;
131 m_HasBorders =
132 (tag.HasParam(wxT("BORDER")) && tag.GetParam(wxT("BORDER")) != wxT("0"));
133 m_ColsInfo = NULL;
134 m_NumCols = m_NumRows = 0;
135 m_CellInfo = NULL;
136 m_ActualCol = m_ActualRow = -1;
137
138 /* scan params: */
139 if (tag.HasParam(wxT("BGCOLOR")))
140 {
141 tag.GetParamAsColour(wxT("BGCOLOR"), &m_tBkg);
142 if (m_tBkg.Ok())
143 SetBackgroundColour(m_tBkg);
144 }
145 if (tag.HasParam(wxT("VALIGN")))
146 m_tValign = tag.GetParam(wxT("VALIGN"));
147 else
148 m_tValign = wxEmptyString;
149 if (!tag.GetParamAsInt(wxT("CELLSPACING"), &m_Spacing))
150 m_Spacing = 2;
151 if (!tag.GetParamAsInt(wxT("CELLPADDING"), &m_Padding))
152 m_Padding = 3;
153 m_Spacing = (int)(m_PixelScale * (double)m_Spacing);
154 m_Padding = (int)(m_PixelScale * (double)m_Padding);
155
156 if (m_HasBorders)
157 SetBorder(TABLE_BORDER_CLR_1, TABLE_BORDER_CLR_2);
158 }
159
160
161
162 wxHtmlTableCell::~wxHtmlTableCell()
163 {
164 if (m_ColsInfo) free(m_ColsInfo);
165 if (m_CellInfo)
166 {
167 for (int i = 0; i < m_NumRows; i++)
168 free(m_CellInfo[i]);
169 free(m_CellInfo);
170 }
171 }
172
173
174 void wxHtmlTableCell::RemoveExtraSpacing(bool WXUNUSED(top),
175 bool WXUNUSED(bottom))
176 {
177 // Don't remove any spacing in the table -- it's always desirable,
178 // because it's part of table's definition.
179 // (If wxHtmlContainerCell::RemoveExtraSpacing() was applied to tables,
180 // then upper left cell of a table would be positioned above other cells
181 // if the table was the first element on the page.)
182 }
183
184 void wxHtmlTableCell::ReallocCols(int cols)
185 {
186 int i,j;
187
188 for (i = 0; i < m_NumRows; i++)
189 {
190 m_CellInfo[i] = (cellStruct*) realloc(m_CellInfo[i], sizeof(cellStruct) * cols);
191 for (j = m_NumCols; j < cols; j++)
192 m_CellInfo[i][j].flag = cellFree;
193 }
194
195 m_ColsInfo = (colStruct*) realloc(m_ColsInfo, sizeof(colStruct) * cols);
196 for (j = m_NumCols; j < cols; j++)
197 {
198 m_ColsInfo[j].width = 0;
199 m_ColsInfo[j].units = wxHTML_UNITS_PERCENT;
200 m_ColsInfo[j].minWidth = m_ColsInfo[j].maxWidth = -1;
201 }
202
203 m_NumCols = cols;
204 }
205
206
207
208 void wxHtmlTableCell::ReallocRows(int rows)
209 {
210 m_CellInfo = (cellStruct**) realloc(m_CellInfo, sizeof(cellStruct*) * rows);
211 for (int row = m_NumRows; row < rows ; row++)
212 {
213 if (m_NumCols == 0)
214 m_CellInfo[row] = NULL;
215 else
216 {
217 m_CellInfo[row] = (cellStruct*) malloc(sizeof(cellStruct) * m_NumCols);
218 for (int col = 0; col < m_NumCols; col++)
219 m_CellInfo[row][col].flag = cellFree;
220 }
221 }
222 m_NumRows = rows;
223 }
224
225
226 void wxHtmlTableCell::AddRow(const wxHtmlTag& tag)
227 {
228 m_ActualCol = -1;
229 // VS: real allocation of row entry is done in AddCell in order
230 // to correctly handle empty rows (i.e. "<tr></tr>")
231 // m_ActualCol == -1 indicates that AddCell has to allocate new row.
232
233 // scan params:
234 m_rBkg = m_tBkg;
235 if (tag.HasParam(wxT("BGCOLOR")))
236 tag.GetParamAsColour(wxT("BGCOLOR"), &m_rBkg);
237 if (tag.HasParam(wxT("VALIGN")))
238 m_rValign = tag.GetParam(wxT("VALIGN"));
239 else
240 m_rValign = m_tValign;
241 }
242
243
244
245 void wxHtmlTableCell::AddCell(wxHtmlContainerCell *cell, const wxHtmlTag& tag)
246 {
247 // Is this cell in new row?
248 // VS: we can't do it in AddRow, see my comment there
249 if (m_ActualCol == -1)
250 {
251 if (m_ActualRow + 1 > m_NumRows - 1)
252 ReallocRows(m_ActualRow + 2);
253 m_ActualRow++;
254 }
255
256 // cells & columns:
257 do
258 {
259 m_ActualCol++;
260 } while ((m_ActualCol < m_NumCols) &&
261 (m_CellInfo[m_ActualRow][m_ActualCol].flag != cellFree));
262
263 if (m_ActualCol > m_NumCols - 1)
264 ReallocCols(m_ActualCol + 1);
265
266 int r = m_ActualRow, c = m_ActualCol;
267
268 m_CellInfo[r][c].cont = cell;
269 m_CellInfo[r][c].colspan = 1;
270 m_CellInfo[r][c].rowspan = 1;
271 m_CellInfo[r][c].flag = cellUsed;
272 m_CellInfo[r][c].minheight = 0;
273 m_CellInfo[r][c].valign = wxHTML_ALIGN_TOP;
274
275 /* scan for parameters: */
276
277 // width:
278 {
279 if (tag.HasParam(wxT("WIDTH")))
280 {
281 wxString wd = tag.GetParam(wxT("WIDTH"));
282
283 if (wd[wd.length()-1] == wxT('%'))
284 {
285 if ( wxSscanf(wd.c_str(), wxT("%i%%"), &m_ColsInfo[c].width) == 1 )
286 {
287 m_ColsInfo[c].units = wxHTML_UNITS_PERCENT;
288 }
289 }
290 else
291 {
292 long width;
293 if ( wd.ToLong(&width) )
294 {
295 m_ColsInfo[c].width = (int)(m_PixelScale * (double)width);
296 m_ColsInfo[c].units = wxHTML_UNITS_PIXELS;
297 }
298 }
299 }
300 }
301
302
303 // spanning:
304 {
305 tag.GetParamAsInt(wxT("COLSPAN"), &m_CellInfo[r][c].colspan);
306 tag.GetParamAsInt(wxT("ROWSPAN"), &m_CellInfo[r][c].rowspan);
307
308 // VS: the standard says this about col/rowspan:
309 // "This attribute specifies the number of rows spanned by the
310 // current cell. The default value of this attribute is one ("1").
311 // The value zero ("0") means that the cell spans all rows from the
312 // current row to the last row of the table." All mainstream
313 // browsers act as if 0==1, though, and so does wxHTML.
314 if (m_CellInfo[r][c].colspan < 1)
315 m_CellInfo[r][c].colspan = 1;
316 if (m_CellInfo[r][c].rowspan < 1)
317 m_CellInfo[r][c].rowspan = 1;
318
319 if ((m_CellInfo[r][c].colspan > 1) || (m_CellInfo[r][c].rowspan > 1))
320 {
321 int i, j;
322
323 if (r + m_CellInfo[r][c].rowspan > m_NumRows)
324 ReallocRows(r + m_CellInfo[r][c].rowspan);
325 if (c + m_CellInfo[r][c].colspan > m_NumCols)
326 ReallocCols(c + m_CellInfo[r][c].colspan);
327 for (i = r; i < r + m_CellInfo[r][c].rowspan; i++)
328 for (j = c; j < c + m_CellInfo[r][c].colspan; j++)
329 m_CellInfo[i][j].flag = cellSpan;
330 m_CellInfo[r][c].flag = cellUsed;
331 }
332 }
333
334 //background color:
335 {
336 wxColour bk = m_rBkg;
337 if (tag.HasParam(wxT("BGCOLOR")))
338 tag.GetParamAsColour(wxT("BGCOLOR"), &bk);
339 if (bk.Ok())
340 cell->SetBackgroundColour(bk);
341 }
342 if (m_HasBorders)
343 cell->SetBorder(TABLE_BORDER_CLR_2, TABLE_BORDER_CLR_1);
344
345 // vertical alignment:
346 {
347 wxString valign;
348 if (tag.HasParam(wxT("VALIGN")))
349 valign = tag.GetParam(wxT("VALIGN"));
350 else
351 valign = m_tValign;
352 valign.MakeUpper();
353 if (valign == wxT("TOP"))
354 m_CellInfo[r][c].valign = wxHTML_ALIGN_TOP;
355 else if (valign == wxT("BOTTOM"))
356 m_CellInfo[r][c].valign = wxHTML_ALIGN_BOTTOM;
357 else m_CellInfo[r][c].valign = wxHTML_ALIGN_CENTER;
358 }
359
360 // nowrap
361 if (tag.HasParam(wxT("NOWRAP")))
362 m_CellInfo[r][c].nowrap = true;
363 else
364 m_CellInfo[r][c].nowrap = false;
365
366 cell->SetIndent(m_Padding, wxHTML_INDENT_ALL, wxHTML_UNITS_PIXELS);
367 }
368
369 void wxHtmlTableCell::ComputeMinMaxWidths()
370 {
371 if (m_NumCols == 0 || m_ColsInfo[0].minWidth != wxDefaultCoord) return;
372
373 m_MaxTotalWidth = 0;
374 int percentage = 0;
375 for (int c = 0; c < m_NumCols; c++)
376 {
377 for (int r = 0; r < m_NumRows; r++)
378 {
379 cellStruct& cell = m_CellInfo[r][c];
380 if (cell.flag == cellUsed)
381 {
382 cell.cont->Layout(2*m_Padding + 1);
383 int maxWidth = cell.cont->GetMaxTotalWidth();
384 int width = cell.nowrap?maxWidth:cell.cont->GetWidth();
385 width -= (cell.colspan-1) * m_Spacing;
386 maxWidth -= (cell.colspan-1) * m_Spacing;
387 // HTML 4.0 says it is acceptable to distribute min/max
388 width /= cell.colspan;
389 maxWidth /= cell.colspan;
390 for (int j = 0; j < cell.colspan; j++) {
391 if (width > m_ColsInfo[c+j].minWidth)
392 m_ColsInfo[c+j].minWidth = width;
393 if (maxWidth > m_ColsInfo[c+j].maxWidth)
394 m_ColsInfo[c+j].maxWidth = maxWidth;
395 }
396 }
397 }
398 // Calculate maximum table width, required for nested tables
399 if (m_ColsInfo[c].units == wxHTML_UNITS_PIXELS)
400 m_MaxTotalWidth += wxMax(m_ColsInfo[c].width, m_ColsInfo[c].minWidth);
401 else if ((m_ColsInfo[c].units == wxHTML_UNITS_PERCENT) && (m_ColsInfo[c].width != 0))
402 percentage += m_ColsInfo[c].width;
403 else
404 m_MaxTotalWidth += m_ColsInfo[c].maxWidth;
405 }
406
407 if (percentage >= 100)
408 {
409 // Table would have infinite length
410 // Make it ridiculous large
411 m_MaxTotalWidth = 0xFFFFFF;
412 }
413 else
414 m_MaxTotalWidth = m_MaxTotalWidth * 100 / (100 - percentage);
415
416 m_MaxTotalWidth += (m_NumCols + 1) * m_Spacing;
417 }
418
419 void wxHtmlTableCell::Layout(int w)
420 {
421 ComputeMinMaxWidths();
422
423 wxHtmlCell::Layout(w);
424
425 /*
426
427 WIDTH ADJUSTING :
428
429 */
430
431 if (m_WidthFloatUnits == wxHTML_UNITS_PERCENT)
432 {
433 if (m_WidthFloat < 0)
434 {
435 if (m_WidthFloat < -100)
436 m_WidthFloat = -100;
437 m_Width = (100 + m_WidthFloat) * w / 100;
438 }
439 else
440 {
441 if (m_WidthFloat > 100)
442 m_WidthFloat = 100;
443 m_Width = m_WidthFloat * w / 100;
444 }
445 }
446 else
447 {
448 if (m_WidthFloat < 0) m_Width = w + m_WidthFloat;
449 else m_Width = m_WidthFloat;
450 }
451
452
453 /*
454
455 LAYOUTING :
456
457 */
458
459 /* 1. setup columns widths:
460
461 The algorithm tries to keep the table size less than w if possible.
462 */
463 {
464 int wpix = m_Width - (m_NumCols + 1) * m_Spacing;
465 int i, j;
466
467 // 1a. setup fixed-width columns:
468 for (i = 0; i < m_NumCols; i++)
469 if (m_ColsInfo[i].units == wxHTML_UNITS_PIXELS)
470 {
471 m_ColsInfo[i].pixwidth = wxMax(m_ColsInfo[i].width,
472 m_ColsInfo[i].minWidth);
473 wpix -= m_ColsInfo[i].pixwidth;
474 }
475
476 // 1b. Calculate maximum possible width if line wrapping would be disabled
477 // Recalculate total width if m_WidthFloat is zero to keep tables as small
478 // as possible.
479 int maxWidth = 0;
480 for (i = 0; i < m_NumCols; i++)
481 if (m_ColsInfo[i].width == 0)
482 {
483 maxWidth += m_ColsInfo[i].maxWidth;
484 }
485
486 if (!m_WidthFloat)
487 {
488 // Recalculate table width since no table width was initially given
489 int newWidth = m_Width - wpix + maxWidth;
490
491 // Make sure that floating-width columns will have the right size.
492 // Calculate sum of all floating-width columns
493 int percentage = 0;
494 for (i = 0; i < m_NumCols; i++)
495 if ((m_ColsInfo[i].units == wxHTML_UNITS_PERCENT) && (m_ColsInfo[i].width != 0))
496 percentage += m_ColsInfo[i].width;
497
498 if (percentage >= 100)
499 newWidth = w;
500 else
501 newWidth = newWidth * 100 / (100 - percentage);
502
503 newWidth = wxMin(newWidth, w - (m_NumCols + 1) * m_Spacing);
504 wpix -= m_Width - newWidth;
505 m_Width = newWidth;
506 }
507
508
509 // 1c. setup floating-width columns:
510 int wtemp = wpix;
511 for (i = 0; i < m_NumCols; i++)
512 if ((m_ColsInfo[i].units == wxHTML_UNITS_PERCENT) && (m_ColsInfo[i].width != 0))
513 {
514 m_ColsInfo[i].pixwidth = wxMin(m_ColsInfo[i].width, 100) * wpix / 100;
515
516 // Make sure to leave enough space for the other columns
517 int minRequired = 0;
518 for (j = 0; j < m_NumCols; j++)
519 {
520 if ((m_ColsInfo[j].units == wxHTML_UNITS_PERCENT && j > i) ||
521 !m_ColsInfo[j].width)
522 minRequired += m_ColsInfo[j].minWidth;
523 }
524 m_ColsInfo[i].pixwidth = wxMax(wxMin(wtemp - minRequired, m_ColsInfo[i].pixwidth), m_ColsInfo[i].minWidth);
525
526 wtemp -= m_ColsInfo[i].pixwidth;
527 }
528 wpix = wtemp;
529
530 // 1d. setup default columns (no width specification supplied):
531 // The algorithm assigns calculates the maximum possible width if line
532 // wrapping would be disabled and assigns column width as a fraction
533 // based upon the maximum width of a column
534 // FIXME: I'm not sure if this algorithm is conform to HTML standard,
535 // though it seems to be much better than the old one
536
537 for (i = j = 0; i < m_NumCols; i++)
538 if (m_ColsInfo[i].width == 0) j++;
539 if (wpix < 0)
540 wpix = 0;
541
542 // Assign widths
543 for (i = 0; i < m_NumCols; i++)
544 if (m_ColsInfo[i].width == 0)
545 {
546 // Assign with, make sure not to drop below minWidth
547 if (maxWidth)
548 m_ColsInfo[i].pixwidth = (int)(wpix * (m_ColsInfo[i].maxWidth / (float)maxWidth) + 0.5);
549 else
550 m_ColsInfo[i].pixwidth = wpix / j;
551
552 // Make sure to leave enough space for the other columns
553 int minRequired = 0;
554 int r;
555 for (r = i + 1; r < m_NumCols; r++)
556 {
557 if (!m_ColsInfo[r].width)
558 minRequired += m_ColsInfo[r].minWidth;
559 }
560 m_ColsInfo[i].pixwidth = wxMax(wxMin(wpix - minRequired, m_ColsInfo[i].pixwidth), m_ColsInfo[i].minWidth);
561
562 if (maxWidth)
563 {
564 if (m_ColsInfo[i].pixwidth > (wpix * (m_ColsInfo[i].maxWidth / (float)maxWidth) + 0.5))
565 {
566 int diff = (int)(m_ColsInfo[i].pixwidth - (wpix * m_ColsInfo[i].maxWidth / (float)maxWidth + 0.5));
567 maxWidth += diff - m_ColsInfo[i].maxWidth;
568 }
569 else
570 maxWidth -= m_ColsInfo[i].maxWidth;
571 }
572 wpix -= m_ColsInfo[i].pixwidth;
573 }
574 }
575
576 /* 2. compute positions of columns: */
577 {
578 int wpos = m_Spacing;
579 for (int i = 0; i < m_NumCols; i++)
580 {
581 m_ColsInfo[i].leftpos = wpos;
582 wpos += m_ColsInfo[i].pixwidth + m_Spacing;
583 }
584
585 // add the remaining space to the last column
586 if (m_NumCols > 0 && wpos < m_Width)
587 m_ColsInfo[m_NumCols-1].pixwidth += m_Width - wpos;
588 }
589
590 /* 3. sub-layout all cells: */
591 {
592 int *ypos = new int[m_NumRows + 1];
593
594 int actcol, actrow;
595 int fullwid;
596 wxHtmlContainerCell *actcell;
597
598 ypos[0] = m_Spacing;
599 for (actrow = 1; actrow <= m_NumRows; actrow++) ypos[actrow] = -1;
600 for (actrow = 0; actrow < m_NumRows; actrow++)
601 {
602 if (ypos[actrow] == -1) ypos[actrow] = ypos[actrow-1];
603 // 3a. sub-layout and detect max height:
604
605 for (actcol = 0; actcol < m_NumCols; actcol++) {
606 if (m_CellInfo[actrow][actcol].flag != cellUsed) continue;
607 actcell = m_CellInfo[actrow][actcol].cont;
608 fullwid = 0;
609 for (int i = actcol; i < m_CellInfo[actrow][actcol].colspan + actcol; i++)
610 fullwid += m_ColsInfo[i].pixwidth;
611 fullwid += (m_CellInfo[actrow][actcol].colspan - 1) * m_Spacing;
612 actcell->SetMinHeight(m_CellInfo[actrow][actcol].minheight, m_CellInfo[actrow][actcol].valign);
613 actcell->Layout(fullwid);
614
615 if (ypos[actrow] + actcell->GetHeight() + m_CellInfo[actrow][actcol].rowspan * m_Spacing > ypos[actrow + m_CellInfo[actrow][actcol].rowspan])
616 ypos[actrow + m_CellInfo[actrow][actcol].rowspan] =
617 ypos[actrow] + actcell->GetHeight() + m_CellInfo[actrow][actcol].rowspan * m_Spacing;
618 }
619 }
620
621 for (actrow = 0; actrow < m_NumRows; actrow++)
622 {
623 // 3b. place cells in row & let'em all have same height:
624
625 for (actcol = 0; actcol < m_NumCols; actcol++)
626 {
627 if (m_CellInfo[actrow][actcol].flag != cellUsed) continue;
628 actcell = m_CellInfo[actrow][actcol].cont;
629 actcell->SetMinHeight(
630 ypos[actrow + m_CellInfo[actrow][actcol].rowspan] - ypos[actrow] - m_Spacing,
631 m_CellInfo[actrow][actcol].valign);
632 fullwid = 0;
633 for (int i = actcol; i < m_CellInfo[actrow][actcol].colspan + actcol; i++)
634 fullwid += m_ColsInfo[i].pixwidth;
635 fullwid += (m_CellInfo[actrow][actcol].colspan - 1) * m_Spacing;
636 actcell->Layout(fullwid);
637 actcell->SetPos(m_ColsInfo[actcol].leftpos, ypos[actrow]);
638 }
639 }
640 m_Height = ypos[m_NumRows];
641 delete[] ypos;
642 }
643
644 /* 4. adjust table's width if it was too small: */
645 if (m_NumCols > 0)
646 {
647 int twidth = m_ColsInfo[m_NumCols-1].leftpos +
648 m_ColsInfo[m_NumCols-1].pixwidth + m_Spacing;
649 if (twidth > m_Width)
650 m_Width = twidth;
651 }
652 }
653
654
655
656
657
658
659 //-----------------------------------------------------------------------------
660 // The tables handler:
661 //-----------------------------------------------------------------------------
662
663
664 TAG_HANDLER_BEGIN(TABLE, "TABLE,TR,TD,TH")
665
666 TAG_HANDLER_VARS
667 wxHtmlTableCell* m_Table;
668 wxString m_tAlign, m_rAlign;
669 wxHtmlContainerCell *m_enclosingContainer;
670
671 TAG_HANDLER_CONSTR(TABLE)
672 {
673 m_Table = NULL;
674 m_enclosingContainer = NULL;
675 m_tAlign = m_rAlign = wxEmptyString;
676 }
677
678
679 TAG_HANDLER_PROC(tag)
680 {
681 wxHtmlContainerCell *c;
682
683 // new table started, backup upper-level table (if any) and create new:
684 if (tag.GetName() == wxT("TABLE"))
685 {
686 wxHtmlTableCell *oldt = m_Table;
687
688 m_enclosingContainer = c = m_WParser->OpenContainer();
689
690 m_Table = new wxHtmlTableCell(c, tag, m_WParser->GetPixelScale());
691
692 // width:
693 {
694 if (tag.HasParam(wxT("WIDTH")))
695 {
696 wxString wd = tag.GetParam(wxT("WIDTH"));
697
698 if (wd[wd.length()-1] == wxT('%'))
699 {
700 int width = 0;
701 wxSscanf(wd.c_str(), wxT("%i%%"), &width);
702 m_Table->SetWidthFloat(width, wxHTML_UNITS_PERCENT);
703 }
704 else
705 {
706 int width = 0;
707 wxSscanf(wd.c_str(), wxT("%i"), &width);
708 m_Table->SetWidthFloat((int)(m_WParser->GetPixelScale() * width), wxHTML_UNITS_PIXELS);
709 }
710 }
711 else
712 m_Table->SetWidthFloat(0, wxHTML_UNITS_PIXELS);
713 }
714 int oldAlign = m_WParser->GetAlign();
715 m_tAlign = wxEmptyString;
716 if (tag.HasParam(wxT("ALIGN")))
717 m_tAlign = tag.GetParam(wxT("ALIGN"));
718
719 ParseInner(tag);
720
721 m_WParser->SetAlign(oldAlign);
722 m_WParser->SetContainer(m_enclosingContainer);
723 m_WParser->CloseContainer();
724
725 m_Table = oldt;
726
727 return true; // ParseInner() called
728 }
729
730
731 else if (m_Table)
732 {
733 // new row in table
734 if (tag.GetName() == wxT("TR"))
735 {
736 m_Table->AddRow(tag);
737 m_rAlign = m_tAlign;
738 if (tag.HasParam(wxT("ALIGN")))
739 m_rAlign = tag.GetParam(wxT("ALIGN"));
740 }
741
742 // new cell
743 else
744 {
745 c = m_WParser->SetContainer(new wxHtmlContainerCell(m_Table));
746 m_Table->AddCell(c, tag);
747
748 m_WParser->OpenContainer();
749
750 if (tag.GetName() == wxT("TH")) /*header style*/
751 m_WParser->SetAlign(wxHTML_ALIGN_CENTER);
752 else
753 m_WParser->SetAlign(wxHTML_ALIGN_LEFT);
754
755 wxString als;
756
757 als = m_rAlign;
758 if (tag.HasParam(wxT("ALIGN")))
759 als = tag.GetParam(wxT("ALIGN"));
760 als.MakeUpper();
761 if (als == wxT("RIGHT"))
762 m_WParser->SetAlign(wxHTML_ALIGN_RIGHT);
763 else if (als == wxT("LEFT"))
764 m_WParser->SetAlign(wxHTML_ALIGN_LEFT);
765 else if (als == wxT("CENTER"))
766 m_WParser->SetAlign(wxHTML_ALIGN_CENTER);
767
768 m_WParser->OpenContainer();
769
770 ParseInner(tag);
771
772 // set the current container back to the enclosing one so that
773 // text outside of <th> and <td> isn't included in any cell
774 // (this happens often enough in practice because it's common
775 // to use whitespace between </td> and the next <td>):
776 m_WParser->SetContainer(m_enclosingContainer);
777
778 return true; // ParseInner() called
779 }
780 }
781
782 return false;
783 }
784
785 TAG_HANDLER_END(TABLE)
786
787
788
789
790
791 TAGS_MODULE_BEGIN(Tables)
792
793 TAGS_MODULE_ADD(TABLE)
794
795 TAGS_MODULE_END(Tables)
796
797
798 #endif
wxWidgets (Impactor)