src/html/htmlcell.cpp

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