src/html/htmlcell.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        htmlcell.cpp
   3 // Purpose:     wxHtmlCell - basic element of HTML output
   4 // Author:      Vaclav Slavik
   5 // RCS-ID:      $Id$
   6 // Copyright:   (c) 1999 Vaclav Slavik
   7 // Licence:     wxWindows Licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 #ifdef __GNUG__
  11 #pragma implementation
  12 #endif
  13
  14 #include "wx/wxprec.h"
  15
  16 #include "wx/defs.h"
  17 #if wxUSE_HTML
  18
  19 #ifdef __BORDLANDC__
  20 #pragma hdrstop
  21 #endif
  22
  23 #ifndef WXPRECOMP
  24 #include "wx/wx.h"
  25 #endif
  26
  27 #include "wx/html/htmlcell.h"
  28 #include "wx/html/htmlwin.h"
  29 #include <stdlib.h>
  30
  31
  32 //-----------------------------------------------------------------------------
  33 // wxHtmlCell
  34 //-----------------------------------------------------------------------------
  35
  36
  37 void wxHtmlCell::OnMouseClick(wxWindow *parent, int x, int y,
  38                               bool WXUNUSED(left),
  39                               bool WXUNUSED(middle),
  40                               bool WXUNUSED(right))
  41 {
  42     wxString lnk = GetLink(x, y);
  43     if (lnk != wxEmptyString)
  44         ((wxHtmlWindow*)parent) -> OnLinkClicked(lnk);
  45         // note : this overcasting is legal because parent is *always* wxHtmlWindow
  46 }
  47
  48
  49
  50 bool wxHtmlCell::AdjustPagebreak(int *pagebreak)
  51 {
  52
  53     if ((!m_CanLiveOnPagebreak) &&
  54                 m_PosY < *pagebreak && m_PosY + m_Height > *pagebreak) {
  55         *pagebreak = m_PosY;
  56         if (m_Next != NULL) m_Next -> AdjustPagebreak(pagebreak);
  57         return TRUE;
  58     }
  59
  60     else {
  61         if (m_Next != NULL) return m_Next -> AdjustPagebreak(pagebreak);
  62         else return FALSE;
  63     }
  64 }
  65
  66
  67
  68
  69 //-----------------------------------------------------------------------------
  70 // wxHtmlWordCell
  71 //-----------------------------------------------------------------------------
  72
  73 wxHtmlWordCell::wxHtmlWordCell(const wxString& word, wxDC& dc) : wxHtmlCell()
  74 {
  75     m_Word = word;
  76
  77     m_Word.Replace(wxT("&nbsp;"), wxT(" "), TRUE);
  78     m_Word.Replace(wxT("&quot;"), wxT("\""), TRUE);
  79     m_Word.Replace(wxT("&lt;"), wxT("<"), TRUE);
  80     m_Word.Replace(wxT("&gt;"), wxT(">"), TRUE);
  81     m_Word.Replace(wxT("&amp;"), wxT("&"), TRUE);
  82
  83     m_Word.Replace(wxT("&nbsp "), wxT(" "), TRUE);
  84     m_Word.Replace(wxT("&quot "), wxT("\""), TRUE);
  85     m_Word.Replace(wxT("&lt "), wxT("<"), TRUE);
  86     m_Word.Replace(wxT("&gt "), wxT(">"), TRUE);
  87     m_Word.Replace(wxT("&amp "), wxT("&"), TRUE);
  88
  89     dc.GetTextExtent(m_Word, &m_Width, &m_Height, &m_Descent);
  90     SetCanLiveOnPagebreak(FALSE);
  91 }
  92
  93
  94
  95 void wxHtmlWordCell::Draw(wxDC& dc, int x, int y, int view_y1, int view_y2)
  96 {
  97     dc.DrawText(m_Word, x + m_PosX, y + m_PosY);
  98     wxHtmlCell::Draw(dc, x, y, view_y1, view_y2);
  99 }
 100
 101
 102
 103 //-----------------------------------------------------------------------------
 104 // wxHtmlContainerCell
 105 //-----------------------------------------------------------------------------
 106
 107
 108 wxHtmlContainerCell::wxHtmlContainerCell(wxHtmlContainerCell *parent) : wxHtmlCell()
 109 {
 110     m_Cells = m_LastCell = NULL;
 111     m_Parent = parent;
 112     if (m_Parent) m_Parent -> InsertCell(this);
 113     m_AlignHor = wxHTML_ALIGN_LEFT;
 114     m_AlignVer = wxHTML_ALIGN_BOTTOM;
 115     m_IndentLeft = m_IndentRight = m_IndentTop = m_IndentBottom = 0;
 116     m_WidthFloat = 100; m_WidthFloatUnits = wxHTML_UNITS_PERCENT;
 117     m_UseBkColour = FALSE;
 118     m_UseBorder = FALSE;
 119     m_MinHeight = m_MaxLineWidth = 0;
 120     m_MinHeightAlign = wxHTML_ALIGN_TOP;
 121 }
 122
 123
 124
 125 void wxHtmlContainerCell::SetIndent(int i, int what, int units)
 126 {
 127     int val = (units == wxHTML_UNITS_PIXELS) ? i : -i;
 128     if (what & wxHTML_INDENT_LEFT) m_IndentLeft = val;
 129     if (what & wxHTML_INDENT_RIGHT) m_IndentRight = val;
 130     if (what & wxHTML_INDENT_TOP) m_IndentTop = val;
 131     if (what & wxHTML_INDENT_BOTTOM) m_IndentBottom = val;
 132 }
 133
 134
 135
 136 int wxHtmlContainerCell::GetIndent(int ind) const
 137 {
 138     if (ind & wxHTML_INDENT_LEFT) return m_IndentLeft;
 139     else if (ind & wxHTML_INDENT_RIGHT) return m_IndentRight;
 140     else if (ind & wxHTML_INDENT_TOP) return m_IndentTop;
 141     else if (ind & wxHTML_INDENT_BOTTOM) return m_IndentBottom;
 142     else return -1; /* BUG! Should not be called... */
 143 }
 144
 145
 146
 147
 148 int wxHtmlContainerCell::GetIndentUnits(int ind) const
 149 {
 150     bool p = FALSE;
 151     if (ind & wxHTML_INDENT_LEFT) p = m_IndentLeft < 0;
 152     else if (ind & wxHTML_INDENT_RIGHT) p = m_IndentRight < 0;
 153     else if (ind & wxHTML_INDENT_TOP) p = m_IndentTop < 0;
 154     else if (ind & wxHTML_INDENT_BOTTOM) p = m_IndentBottom < 0;
 155     if (p) return wxHTML_UNITS_PERCENT;
 156     else return wxHTML_UNITS_PIXELS;
 157 }
 158
 159
 160
 161 bool wxHtmlContainerCell::AdjustPagebreak(int *pagebreak)
 162 {
 163     if (!m_CanLiveOnPagebreak)
 164         return wxHtmlCell::AdjustPagebreak(pagebreak);
 165
 166     else {
 167         wxHtmlCell *c = GetFirstCell();
 168         bool rt = FALSE;
 169         int pbrk = *pagebreak - m_PosY;
 170
 171         while (c) {
 172             if (c -> AdjustPagebreak(&pbrk)) rt = TRUE;
 173             c = c -> GetNext();
 174         }
 175         if (rt) *pagebreak = pbrk + m_PosY;
 176         return rt;
 177     }
 178 }
 179
 180
 181
 182 void wxHtmlContainerCell::Layout(int w)
 183 {
 184     wxHtmlCell *cell = m_Cells, *line = m_Cells;
 185     long xpos = 0, ypos = m_IndentTop;
 186     int xdelta = 0, ybasicpos = 0, ydiff;
 187     int s_width, s_indent;
 188     int ysizeup = 0, ysizedown = 0;
 189
 190     /*
 191
 192     WIDTH ADJUSTING :
 193
 194     */
 195
 196     if (m_WidthFloatUnits == wxHTML_UNITS_PERCENT) {
 197         if (m_WidthFloat < 0) m_Width = (100 + m_WidthFloat) * w / 100;
 198         else m_Width = m_WidthFloat * w / 100;
 199     }
 200     else {
 201         if (m_WidthFloat < 0) m_Width = w + m_WidthFloat;
 202         else m_Width = m_WidthFloat;
 203     }
 204
 205     if (m_Cells) {
 206         int l = (m_IndentLeft < 0) ? (-m_IndentLeft * m_Width / 100) : m_IndentLeft;
 207         int r = (m_IndentRight < 0) ? (-m_IndentRight * m_Width / 100) : m_IndentRight;
 208         m_Cells -> Layout(m_Width - (l + r));
 209     }
 210
 211     /*
 212
 213     LAYOUTING :
 214
 215     */
 216
 217     // adjust indentation:
 218     s_indent = (m_IndentLeft < 0) ? (-m_IndentLeft * m_Width / 100) : m_IndentLeft;
 219     s_width = m_Width - s_indent - ((m_IndentRight < 0) ? (-m_IndentRight * m_Width / 100) : m_IndentRight);
 220
 221     m_MaxLineWidth = 0;
 222
 223     // my own layouting:
 224     while (cell != NULL) {
 225         switch (m_AlignVer) {
 226             case wxHTML_ALIGN_TOP :      ybasicpos = 0; break;
 227             case wxHTML_ALIGN_BOTTOM :   ybasicpos = - cell -> GetHeight(); break;
 228             case wxHTML_ALIGN_CENTER :   ybasicpos = - cell -> GetHeight() / 2; break;
 229         }
 230         ydiff = cell -> GetHeight() + ybasicpos;
 231
 232         if (cell -> GetDescent() + ydiff > ysizedown) ysizedown = cell -> GetDescent() + ydiff;
 233         if (ybasicpos + cell -> GetDescent() < -ysizeup) ysizeup = - (ybasicpos + cell -> GetDescent());
 234
 235         cell -> SetPos(xpos, ybasicpos + cell -> GetDescent());
 236         xpos += cell -> GetWidth();
 237         cell = cell -> GetNext();
 238
 239         // force new line if occured:
 240         if ((cell == NULL) || (xpos + cell -> GetWidth() > s_width)) {
 241             if (xpos > m_MaxLineWidth) m_MaxLineWidth = xpos;
 242             if (ysizeup < 0) ysizeup = 0;
 243             if (ysizedown < 0) ysizedown = 0;
 244             switch (m_AlignHor) {
 245                 case wxHTML_ALIGN_LEFT : xdelta = 0; break;
 246                 case wxHTML_ALIGN_RIGHT : xdelta = 0 + (s_width - xpos); break;
 247                 case wxHTML_ALIGN_CENTER : xdelta = 0 + (s_width - xpos) / 2; break;
 248             }
 249             if (xdelta < 0) xdelta = 0;
 250             xdelta += s_indent;
 251
 252             ypos += ysizeup;
 253             while (line != cell) {
 254                 line -> SetPos(line -> GetPosX() + xdelta, ypos + line -> GetPosY());
 255                 line = line -> GetNext();
 256             }
 257
 258             ypos += ysizedown;
 259             xpos = 0;
 260             ysizeup = ysizedown = 0;
 261             line = cell;
 262         }
 263     }
 264
 265     // setup height & width, depending on container layout:
 266     m_Height = ypos + (ysizedown + ysizeup) + m_IndentBottom;
 267
 268     if (m_Height < m_MinHeight) {
 269         if (m_MinHeightAlign != wxHTML_ALIGN_TOP) {
 270             int diff = m_MinHeight - m_Height;
 271             if (m_MinHeightAlign == wxHTML_ALIGN_CENTER) diff /= 2;
 272             cell = m_Cells;
 273             while (cell) {
 274                 cell -> SetPos(cell -> GetPosX(), cell -> GetPosY() + diff);
 275                 cell = cell -> GetNext();
 276             }
 277         }
 278         m_Height = m_MinHeight;
 279     }
 280
 281     m_MaxLineWidth += s_indent + ((m_IndentRight < 0) ? (-m_IndentRight * m_Width / 100) : m_IndentRight);
 282     if (m_Width < m_MaxLineWidth) m_Width = m_MaxLineWidth;
 283
 284     wxHtmlCell::Layout(w);
 285 }
 286
 287
 288 #define mMin(a, b) (((a) < (b)) ? (a) : (b))
 289 #define mMax(a, b) (((a) < (b)) ? (b) : (a))
 290
 291 void wxHtmlContainerCell::Draw(wxDC& dc, int x, int y, int view_y1, int view_y2)
 292 {
 293     // container visible, draw it:
 294     if ((y + m_PosY < view_y2) && (y + m_PosY + m_Height > view_y1)) {
 295
 296         if (m_UseBkColour) {
 297             wxBrush myb = wxBrush(m_BkColour, wxSOLID);
 298
 299             int real_y1 = mMax(y + m_PosY, view_y1);
 300             int real_y2 = mMin(y + m_PosY + m_Height - 1, view_y2);
 301
 302             dc.SetBrush(myb);
 303             dc.SetPen(*wxTRANSPARENT_PEN);
 304             dc.DrawRectangle(x + m_PosX, real_y1, m_Width, real_y2 - real_y1 + 1);
 305         }
 306
 307         if (m_UseBorder) {
 308             wxPen mypen1(m_BorderColour1, 1, wxSOLID);
 309             wxPen mypen2(m_BorderColour2, 1, wxSOLID);
 310
 311             dc.SetPen(mypen1);
 312             dc.DrawLine(x + m_PosX, y + m_PosY, x + m_PosX, y + m_PosY + m_Height - 1);
 313             dc.DrawLine(x + m_PosX, y + m_PosY, x + m_PosX + m_Width - 1, y + m_PosY);
 314             dc.SetPen(mypen2);
 315             dc.DrawLine(x + m_PosX + m_Width - 1, y + m_PosY, x + m_PosX +  m_Width - 1, y + m_PosY + m_Height - 1);
 316             dc.DrawLine(x + m_PosX, y + m_PosY + m_Height - 1, x + m_PosX + m_Width - 1, y + m_PosY + m_Height - 1);
 317         }
 318
 319         if (m_Cells) m_Cells -> Draw(dc, x + m_PosX, y + m_PosY, view_y1, view_y2);
 320     }
 321     // container invisible, just proceed font+color changing:
 322     else {
 323         if (m_Cells) m_Cells -> DrawInvisible(dc, x + m_PosX, y + m_PosY);
 324     }
 325
 326     wxHtmlCell::Draw(dc, x, y, view_y1, view_y2);
 327 }
 328
 329
 330
 331 void wxHtmlContainerCell::DrawInvisible(wxDC& dc, int x, int y)
 332 {
 333     if (m_Cells) m_Cells -> DrawInvisible(dc, x + m_PosX, y + m_PosY);
 334     wxHtmlCell::DrawInvisible(dc, x, y);
 335 }
 336
 337
 338
 339 wxString wxHtmlContainerCell::GetLink(int x, int y) const
 340 {
 341     wxHtmlCell *c = m_Cells;
 342     int cx, cy, cw, ch;
 343
 344     while (c) {
 345         cx = c -> GetPosX(), cy = c -> GetPosY();
 346         cw = c -> GetWidth(), ch = c -> GetHeight();
 347         if ((x >= cx) && (x < cx + cw) && (y >= cy) && (y < cy + ch))
 348             return c -> GetLink(x - cx, y - cy);
 349         c = c -> GetNext();
 350     }
 351     return wxEmptyString;
 352 }
 353
 354
 355
 356 void wxHtmlContainerCell::InsertCell(wxHtmlCell *f)
 357 {
 358     if (!m_Cells) m_Cells = m_LastCell = f;
 359     else {
 360         m_LastCell -> SetNext(f);
 361         m_LastCell = f;
 362         if (m_LastCell) while (m_LastCell -> GetNext()) m_LastCell = m_LastCell -> GetNext();
 363     }
 364     f -> SetParent(this);
 365 }
 366
 367
 368
 369 void wxHtmlContainerCell::SetAlign(const wxHtmlTag& tag)
 370 {
 371     if (tag.HasParam("ALIGN")) {
 372         wxString alg = tag.GetParam("ALIGN");
 373         alg.MakeUpper();
 374         if (alg == "CENTER")
 375             SetAlignHor(wxHTML_ALIGN_CENTER);
 376         else if (alg == "LEFT")
 377             SetAlignHor(wxHTML_ALIGN_LEFT);
 378         else if (alg == "RIGHT")
 379             SetAlignHor(wxHTML_ALIGN_RIGHT);
 380     }
 381 }
 382
 383
 384
 385 void wxHtmlContainerCell::SetWidthFloat(const wxHtmlTag& tag)
 386 {
 387     if (tag.HasParam("WIDTH")) {
 388         int wdi;
 389         wxString wd = tag.GetParam("WIDTH");
 390
 391         if (wd[wd.Length()-1] == '%') {
 392             wxSscanf(wd.c_str(), wxT("%i%%"), &wdi);
 393             SetWidthFloat(wdi, wxHTML_UNITS_PERCENT);
 394         }
 395         else {
 396             wxSscanf(wd.c_str(), wxT("%i"), &wdi);
 397             SetWidthFloat(wdi, wxHTML_UNITS_PIXELS);
 398         }
 399     }
 400 }
 401
 402
 403
 404 const wxHtmlCell* wxHtmlContainerCell::Find(int condition, const void* param) const
 405 {
 406     const wxHtmlCell *r = NULL;
 407
 408     if (m_Cells) {
 409         r = m_Cells -> Find(condition, param);
 410         if (r) return r;
 411     }
 412
 413     return wxHtmlCell::Find(condition, param);
 414 }
 415
 416
 417
 418 void wxHtmlContainerCell::OnMouseClick(wxWindow *parent, int x, int y, bool left, bool middle, bool right)
 419 {
 420     if (m_Cells) {
 421         wxHtmlCell *c = m_Cells;
 422         while (c) {
 423             if (    (c -> GetPosX() <= x) &&
 424                     (c -> GetPosY() <= y) &&
 425                     (c -> GetPosX() + c -> GetWidth() > x) &&
 426                     (c -> GetPosY() + c -> GetHeight() > y)) {
 427                 c -> OnMouseClick(parent, x - c -> GetPosX(), y - c -> GetPosY(), left, middle, right);
 428                 break;
 429             }
 430             c = c -> GetNext();
 431         }
 432     }
 433 }
 434
 435
 436
 437
 438
 439 //--------------------------------------------------------------------------------
 440 // wxHtmlColourCell
 441 //--------------------------------------------------------------------------------
 442
 443 void wxHtmlColourCell::Draw(wxDC& dc, int x, int y, int view_y1, int view_y2)
 444 {
 445     if (m_Flags & wxHTML_CLR_FOREGROUND)
 446         dc.SetTextForeground(m_Colour);
 447     if (m_Flags & wxHTML_CLR_BACKGROUND) {
 448         dc.SetBackground(wxBrush(m_Colour, wxSOLID));
 449         dc.SetTextBackground(m_Colour);
 450     }
 451     wxHtmlCell::Draw(dc, x, y, view_y1, view_y2);
 452 }
 453
 454 void wxHtmlColourCell::DrawInvisible(wxDC& dc, int x, int y)
 455 {
 456     if (m_Flags & wxHTML_CLR_FOREGROUND)
 457         dc.SetTextForeground(m_Colour);
 458     if (m_Flags & wxHTML_CLR_BACKGROUND) {
 459         dc.SetBackground(wxBrush(m_Colour, wxSOLID));
 460         dc.SetTextBackground(m_Colour);
 461     }
 462     wxHtmlCell::DrawInvisible(dc, x, y);
 463 }
 464
 465
 466
 467
 468 //--------------------------------------------------------------------------------
 469 // wxHtmlFontCell
 470 //--------------------------------------------------------------------------------
 471
 472 void wxHtmlFontCell::Draw(wxDC& dc, int x, int y, int view_y1, int view_y2)
 473 {
 474     dc.SetFont(*m_Font);
 475     wxHtmlCell::Draw(dc, x, y, view_y1, view_y2);
 476 }
 477
 478 void wxHtmlFontCell::DrawInvisible(wxDC& dc, int x, int y)
 479 {
 480     dc.SetFont(*m_Font);
 481     wxHtmlCell::DrawInvisible(dc, x, y);
 482 }
 483
 484
 485
 486
 487
 488
 489
 490
 491 //--------------------------------------------------------------------------------
 492 // wxHtmlWidgetCell
 493 //--------------------------------------------------------------------------------
 494
 495 wxHtmlWidgetCell::wxHtmlWidgetCell(wxWindow *wnd, int w)
 496 {
 497     int sx, sy;
 498     m_Wnd = wnd;
 499     m_Wnd -> GetSize(&sx, &sy);
 500     m_Width = sx, m_Height = sy;
 501     m_WidthFloat = w;
 502 }
 503
 504
 505 void wxHtmlWidgetCell::Draw(wxDC& dc, int x, int y, int view_y1, int view_y2)
 506 {
 507     int absx = 0, absy = 0, stx, sty;
 508     wxHtmlCell *c = this;
 509
 510     while (c) {
 511         absx += c -> GetPosX();
 512         absy += c -> GetPosY();
 513         c = c -> GetParent();
 514     }
 515
 516     ((wxScrolledWindow*)(m_Wnd -> GetParent())) -> ViewStart(&stx, &sty);
 517     m_Wnd -> SetSize(absx - wxHTML_SCROLL_STEP * stx, absy  - wxHTML_SCROLL_STEP * sty, m_Width, m_Height);
 518
 519     wxHtmlCell::Draw(dc, x, y, view_y1, view_y2);
 520 }
 521
 522
 523
 524 void wxHtmlWidgetCell::DrawInvisible(wxDC& dc, int x, int y)
 525 {
 526     int absx = 0, absy = 0, stx, sty;
 527     wxHtmlCell *c = this;
 528
 529     while (c) {
 530         absx += c -> GetPosX();
 531         absy += c -> GetPosY();
 532         c = c -> GetParent();
 533     }
 534
 535     ((wxScrolledWindow*)(m_Wnd -> GetParent())) -> ViewStart(&stx, &sty);
 536     m_Wnd -> SetSize(absx - wxHTML_SCROLL_STEP * stx, absy  - wxHTML_SCROLL_STEP * sty, m_Width, m_Height);
 537
 538     wxHtmlCell::DrawInvisible(dc, x, y);
 539 }
 540
 541
 542
 543 void wxHtmlWidgetCell::Layout(int w)
 544 {
 545     if (m_WidthFloat != 0) {
 546         m_Width = (w * m_WidthFloat) / 100;
 547         m_Wnd -> SetSize(m_Width, m_Height);
 548     }
 549
 550     wxHtmlCell::Layout(w);
 551 }
 552
 553 #endif