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