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 = HTML_ALIGN_LEFT;
 105     m_AlignVer = HTML_ALIGN_BOTTOM;
 106     m_IndentLeft = m_IndentRight = m_IndentTop = m_IndentBottom = 0;
 107     m_WidthFloat = 100; m_WidthFloatUnits = HTML_UNITS_PERCENT;
 108     m_UseBkColour = FALSE;
 109     m_UseBorder = FALSE;
 110     m_MinHeight = m_MaxLineWidth = 0;
 111     m_MinHeightAlign = HTML_ALIGN_TOP;
 112 }
 113
 114
 115
 116 void wxHtmlContainerCell::SetIndent(int i, int what, int units)
 117 {
 118     int val = (units == HTML_UNITS_PIXELS) ? i : -i;
 119     if (what & HTML_INDENT_LEFT) m_IndentLeft = val;
 120     if (what & HTML_INDENT_RIGHT) m_IndentRight = val;
 121     if (what & HTML_INDENT_TOP) m_IndentTop = val;
 122     if (what & HTML_INDENT_BOTTOM) m_IndentBottom = val;
 123 }
 124
 125
 126
 127 int wxHtmlContainerCell::GetIndent(int ind) const
 128 {
 129     if (ind & HTML_INDENT_LEFT) return m_IndentLeft;
 130     else if (ind & HTML_INDENT_RIGHT) return m_IndentRight;
 131     else if (ind & HTML_INDENT_TOP) return m_IndentTop;
 132     else if (ind & HTML_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 & HTML_INDENT_LEFT) p = m_IndentLeft < 0;
 143     else if (ind & HTML_INDENT_RIGHT) p = m_IndentRight < 0;
 144     else if (ind & HTML_INDENT_TOP) p = m_IndentTop < 0;
 145     else if (ind & HTML_INDENT_BOTTOM) p = m_IndentBottom < 0;
 146     if (p) return HTML_UNITS_PERCENT;
 147     else return HTML_UNITS_PIXELS;
 148 }
 149
 150
 151
 152 bool wxHtmlContainerCell::AdjustPagebreak(int *pagebreak)
 153 {
 154     if (!m_CanLiveOnPagebreak)
 155         return wxHtmlCell::AdjustPagebreak(pagebreak);
 156     else {
 157         wxHtmlCell *c = GetFirstCell();
 158         bool rt = FALSE;
 159
 160         while (c) {
 161             if (c -> AdjustPagebreak(pagebreak)) rt = TRUE;
 162             c = c -> GetNext();
 163         }
 164         return rt;
 165     }
 166 }
 167
 168
 169
 170 void wxHtmlContainerCell::Layout(int w)
 171 {
 172     wxHtmlCell *cell = m_Cells, *line = m_Cells;
 173     long xpos = 0, ypos = m_IndentTop;
 174     int xdelta = 0, ybasicpos = 0, ydiff;
 175     int s_width, s_indent;
 176     int ysizeup = 0, ysizedown = 0;
 177
 178     /*
 179
 180     WIDTH ADJUSTING :
 181
 182     */
 183
 184     if (m_WidthFloatUnits == HTML_UNITS_PERCENT) {
 185         if (m_WidthFloat < 0) m_Width = (100 + m_WidthFloat) * w / 100;
 186         else m_Width = m_WidthFloat * w / 100;
 187     }
 188     else {
 189         if (m_WidthFloat < 0) m_Width = w + m_WidthFloat;
 190         else m_Width = m_WidthFloat;
 191     }
 192
 193     if (m_Cells) {
 194         int l = (m_IndentLeft < 0) ? (-m_IndentLeft * m_Width / 100) : m_IndentLeft;
 195         int r = (m_IndentRight < 0) ? (-m_IndentRight * m_Width / 100) : m_IndentRight;
 196         m_Cells -> Layout(m_Width - (l + r));
 197     }
 198
 199     /*
 200
 201     LAYOUTING :
 202
 203     */
 204
 205     // adjust indentation:
 206     s_indent = (m_IndentLeft < 0) ? (-m_IndentLeft * m_Width / 100) : m_IndentLeft;
 207     s_width = m_Width - s_indent - ((m_IndentRight < 0) ? (-m_IndentRight * m_Width / 100) : m_IndentRight);
 208
 209     m_MaxLineWidth = 0;
 210
 211     // my own layouting:
 212     while (cell != NULL) {
 213         switch (m_AlignVer) {
 214             case HTML_ALIGN_TOP :      ybasicpos = 0; break;
 215             case HTML_ALIGN_BOTTOM :   ybasicpos = - cell -> GetHeight(); break;
 216             case HTML_ALIGN_CENTER :   ybasicpos = - cell -> GetHeight() / 2; break;
 217         }
 218         ydiff = cell -> GetHeight() + ybasicpos;
 219
 220         if (cell -> GetDescent() + ydiff > ysizedown) ysizedown = cell -> GetDescent() + ydiff;
 221         if (ybasicpos + cell -> GetDescent() < -ysizeup) ysizeup = - (ybasicpos + cell -> GetDescent());
 222
 223         cell -> SetPos(xpos, ybasicpos + cell -> GetDescent());
 224         xpos += cell -> GetWidth();
 225         cell = cell -> GetNext();
 226
 227         // force new line if occured:
 228         if ((cell == NULL) || (xpos + cell -> GetWidth() > s_width)) {
 229             if (xpos > m_MaxLineWidth) m_MaxLineWidth = xpos;
 230             if (ysizeup < 0) ysizeup = 0;
 231             if (ysizedown < 0) ysizedown = 0;
 232             switch (m_AlignHor) {
 233                 case HTML_ALIGN_LEFT : xdelta = 0; break;
 234                 case HTML_ALIGN_RIGHT : xdelta = 0 + (s_width - xpos); break;
 235                 case HTML_ALIGN_CENTER : xdelta = 0 + (s_width - xpos) / 2; break;
 236             }
 237             if (xdelta < 0) xdelta = 0;
 238             xdelta += s_indent;
 239
 240             ypos += ysizeup;
 241             while (line != cell) {
 242                 line -> SetPos(line -> GetPosX() + xdelta, ypos + line -> GetPosY());
 243                 line = line -> GetNext();
 244             }
 245
 246             ypos += ysizedown;
 247             xpos = 0;
 248             ysizeup = ysizedown = 0;
 249             line = cell;
 250         }
 251     }
 252
 253     // setup height & width, depending on container layout:
 254     m_Height = ypos + (ysizedown + ysizeup) + m_IndentBottom;
 255
 256     if (m_Height < m_MinHeight) {
 257         if (m_MinHeightAlign != HTML_ALIGN_TOP) {
 258             int diff = m_MinHeight - m_Height;
 259             if (m_MinHeightAlign == HTML_ALIGN_CENTER) diff /= 2;
 260             cell = m_Cells;
 261             while (cell) {
 262                 cell -> SetPos(cell -> GetPosX(), cell -> GetPosY() + diff);
 263                 cell = cell -> GetNext();
 264             }
 265         }
 266         m_Height = m_MinHeight;
 267     }
 268
 269     m_MaxLineWidth += s_indent + ((m_IndentRight < 0) ? (-m_IndentRight * m_Width / 100) : m_IndentRight);
 270     if (m_Width < m_MaxLineWidth) m_Width = m_MaxLineWidth;
 271
 272     wxHtmlCell::Layout(w);
 273 }
 274
 275
 276 #define mMin(a, b) (((a) < (b)) ? (a) : (b))
 277 #define mMax(a, b) (((a) < (b)) ? (b) : (a))
 278
 279 void wxHtmlContainerCell::Draw(wxDC& dc, int x, int y, int view_y1, int view_y2)
 280 {
 281     // container visible, draw it:
 282     if ((y + m_PosY < view_y2) && (y + m_PosY + m_Height > view_y1)) {
 283
 284         if (m_UseBkColour) {
 285             wxBrush myb = wxBrush(m_BkColour, wxSOLID);
 286
 287             int real_y1 = mMax(y + m_PosY, view_y1);
 288             int real_y2 = mMin(y + m_PosY + m_Height - 1, view_y2);
 289
 290             dc.SetBrush(myb);
 291             dc.SetPen(*wxTRANSPARENT_PEN);
 292             dc.DrawRectangle(x + m_PosX, real_y1, m_Width, real_y2 - real_y1 + 1);
 293         }
 294
 295         if (m_UseBorder) {
 296             wxPen mypen1(m_BorderColour1, 1, wxSOLID);
 297             wxPen mypen2(m_BorderColour2, 1, wxSOLID);
 298
 299             dc.SetPen(mypen1);
 300             dc.DrawLine(x + m_PosX, y + m_PosY, x + m_PosX, y + m_PosY + m_Height - 1);
 301             dc.DrawLine(x + m_PosX, y + m_PosY, x + m_PosX + m_Width - 1, y + m_PosY);
 302             dc.SetPen(mypen2);
 303             dc.DrawLine(x + m_PosX + m_Width - 1, y + m_PosY, x + m_PosX +  m_Width - 1, y + m_PosY + m_Height - 1);
 304             dc.DrawLine(x + m_PosX, y + m_PosY + m_Height - 1, x + m_PosX + m_Width - 1, y + m_PosY + m_Height - 1);
 305         }
 306
 307         if (m_Cells) m_Cells -> Draw(dc, x + m_PosX, y + m_PosY, view_y1, view_y2);
 308     }
 309     // container invisible, just proceed font+color changing:
 310     else {
 311         if (m_Cells) m_Cells -> DrawInvisible(dc, x + m_PosX, y + m_PosY);
 312     }
 313
 314     wxHtmlCell::Draw(dc, x, y, view_y1, view_y2);
 315 }
 316
 317
 318
 319 void wxHtmlContainerCell::DrawInvisible(wxDC& dc, int x, int y)
 320 {
 321     if (m_Cells) m_Cells -> DrawInvisible(dc, x + m_PosX, y + m_PosY);
 322     wxHtmlCell::DrawInvisible(dc, x, y);
 323 }
 324
 325
 326
 327 wxString wxHtmlContainerCell::GetLink(int x, int y) const
 328 {
 329     wxHtmlCell *c = m_Cells;
 330     int cx, cy, cw, ch;
 331
 332     while (c) {
 333         cx = c -> GetPosX(), cy = c -> GetPosY();
 334         cw = c -> GetWidth(), ch = c -> GetHeight();
 335         if ((x >= cx) && (x < cx + cw) && (y >= cy) && (y < cy + ch))
 336             return c -> GetLink(x - cx, y - cy);
 337         c = c -> GetNext();
 338     }
 339     return wxEmptyString;
 340 }
 341
 342
 343
 344 void wxHtmlContainerCell::InsertCell(wxHtmlCell *f)
 345 {
 346     if (!m_Cells) m_Cells = m_LastCell = f;
 347     else {
 348         m_LastCell -> SetNext(f);
 349         m_LastCell = f;
 350         if (m_LastCell) while (m_LastCell -> GetNext()) m_LastCell = m_LastCell -> GetNext();
 351     }
 352     f -> SetParent(this);
 353 }
 354
 355
 356
 357 void wxHtmlContainerCell::SetAlign(const wxHtmlTag& tag)
 358 {
 359     if (tag.HasParam("ALIGN")) {
 360         wxString alg = tag.GetParam("ALIGN");
 361         alg.MakeUpper();
 362         if (alg == "CENTER")
 363             SetAlignHor(HTML_ALIGN_CENTER);
 364         else if (alg == "LEFT")
 365             SetAlignHor(HTML_ALIGN_LEFT);
 366         else if (alg == "RIGHT")
 367             SetAlignHor(HTML_ALIGN_RIGHT);
 368     }
 369 }
 370
 371
 372
 373 void wxHtmlContainerCell::SetWidthFloat(const wxHtmlTag& tag)
 374 {
 375     if (tag.HasParam("WIDTH")) {
 376         int wdi;
 377         wxString wd = tag.GetParam("WIDTH");
 378
 379         if (wd[wd.Length()-1] == '%') {
 380             sscanf(wd.c_str(), "%i%%", &wdi);
 381             SetWidthFloat(wdi, HTML_UNITS_PERCENT);
 382         }
 383         else {
 384             sscanf(wd.c_str(), "%i", &wdi);
 385             SetWidthFloat(wdi, HTML_UNITS_PIXELS);
 386         }
 387     }
 388 }
 389
 390
 391
 392 const wxHtmlCell* wxHtmlContainerCell::Find(int condition, const void* param) const
 393 {
 394     const wxHtmlCell *r = NULL;
 395
 396     if (m_Cells) {
 397         r = m_Cells -> Find(condition, param);
 398         if (r) return r;
 399     }
 400
 401     return wxHtmlCell::Find(condition, param);
 402 }
 403
 404
 405
 406 void wxHtmlContainerCell::OnMouseClick(wxWindow *parent, int x, int y, bool left, bool middle, bool right)
 407 {
 408     if (m_Cells) {
 409         wxHtmlCell *c = m_Cells;
 410         while (c) {
 411             if (    (c -> GetPosX() <= x) &&
 412                     (c -> GetPosY() <= y) &&
 413                     (c -> GetPosX() + c -> GetWidth() > x) &&
 414                     (c -> GetPosY() + c -> GetHeight() > y)) {
 415                 c -> OnMouseClick(parent, x - c -> GetPosX(), y - c -> GetPosY(), left, middle, right);
 416                 break;
 417             }
 418             c = c -> GetNext();
 419         }
 420     }
 421 }
 422
 423
 424
 425
 426
 427 //--------------------------------------------------------------------------------
 428 // wxHtmlColourCell
 429 //--------------------------------------------------------------------------------
 430
 431 void wxHtmlColourCell::Draw(wxDC& dc, int x, int y, int view_y1, int view_y2)
 432 {
 433     if (m_Flags & HTML_CLR_FOREGROUND)
 434         dc.SetTextForeground(m_Colour);
 435     if (m_Flags & HTML_CLR_BACKGROUND) {
 436         dc.SetBackground(wxBrush(m_Colour, wxSOLID));
 437         dc.SetTextBackground(m_Colour);
 438     }
 439     wxHtmlCell::Draw(dc, x, y, view_y1, view_y2);
 440 }
 441
 442 void wxHtmlColourCell::DrawInvisible(wxDC& dc, int x, int y)
 443 {
 444     if (m_Flags & HTML_CLR_FOREGROUND)
 445         dc.SetTextForeground(m_Colour);
 446     if (m_Flags & HTML_CLR_BACKGROUND) {
 447         dc.SetBackground(wxBrush(m_Colour, wxSOLID));
 448         dc.SetTextBackground(m_Colour);
 449     }
 450     wxHtmlCell::DrawInvisible(dc, x, y);
 451 }
 452
 453
 454
 455
 456 //--------------------------------------------------------------------------------
 457 // wxHtmlFontCell
 458 //--------------------------------------------------------------------------------
 459
 460 void wxHtmlFontCell::Draw(wxDC& dc, int x, int y, int view_y1, int view_y2)
 461 {
 462     dc.SetFont(*m_Font);
 463     wxHtmlCell::Draw(dc, x, y, view_y1, view_y2);
 464 }
 465
 466 void wxHtmlFontCell::DrawInvisible(wxDC& dc, int x, int y)
 467 {
 468     dc.SetFont(*m_Font);
 469     wxHtmlCell::DrawInvisible(dc, x, y);
 470 }
 471
 472
 473
 474
 475
 476
 477
 478
 479 //--------------------------------------------------------------------------------
 480 // wxHtmlWidgetCell
 481 //--------------------------------------------------------------------------------
 482
 483 wxHtmlWidgetCell::wxHtmlWidgetCell(wxWindow *wnd, int w)
 484 {
 485     int sx, sy;
 486     m_Wnd = wnd;
 487     m_Wnd -> GetSize(&sx, &sy);
 488     m_Width = sx, m_Height = sy;
 489     m_WidthFloat = w;
 490 }
 491
 492
 493 void wxHtmlWidgetCell::Draw(wxDC& dc, int x, int y, int view_y1, int view_y2)
 494 {
 495     int absx = 0, absy = 0, stx, sty;
 496     wxHtmlCell *c = this;
 497
 498     while (c) {
 499         absx += c -> GetPosX();
 500         absy += c -> GetPosY();
 501         c = c -> GetParent();
 502     }
 503
 504     ((wxScrolledWindow*)(m_Wnd -> GetParent())) -> ViewStart(&stx, &sty);
 505     m_Wnd -> SetSize(absx - HTML_SCROLL_STEP * stx, absy  - HTML_SCROLL_STEP * sty, m_Width, m_Height);
 506
 507     wxHtmlCell::Draw(dc, x, y, view_y1, view_y2);
 508 }
 509
 510
 511
 512 void wxHtmlWidgetCell::DrawInvisible(wxDC& dc, int x, int y)
 513 {
 514     int absx = 0, absy = 0, stx, sty;
 515     wxHtmlCell *c = this;
 516
 517     while (c) {
 518         absx += c -> GetPosX();
 519         absy += c -> GetPosY();
 520         c = c -> GetParent();
 521     }
 522
 523     ((wxScrolledWindow*)(m_Wnd -> GetParent())) -> ViewStart(&stx, &sty);
 524     m_Wnd -> SetSize(absx - HTML_SCROLL_STEP * stx, absy  - HTML_SCROLL_STEP * sty, m_Width, m_Height);
 525
 526     wxHtmlCell::DrawInvisible(dc, x, y);
 527 }
 528
 529
 530
 531 void wxHtmlWidgetCell::Layout(int w)
 532 {
 533     if (m_WidthFloat != 0) {
 534         m_Width = (w * m_WidthFloat) / 100;
 535         m_Wnd -> SetSize(m_Width, m_Height);
 536     }
 537
 538     wxHtmlCell::Layout(w);
 539 }
 540
 541 #endif