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