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