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