src/common/gdicmn.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        gdicmn.cpp
   3 // Purpose:     Common GDI classes
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     01/02/97
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart and Markus Holzem
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation "gdicmn.h"
  14 #endif
  15
  16 #ifdef __VMS
  17 #define XtDisplay XTDISPLAY
  18 #endif
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24 #pragma hdrstop
  25 #endif
  26
  27 #include "wx/event.h"
  28 #include "wx/gdicmn.h"
  29 #include "wx/brush.h"
  30 #include "wx/pen.h"
  31 #include "wx/bitmap.h"
  32 #include "wx/icon.h"
  33 #include "wx/cursor.h"
  34 #include "wx/font.h"
  35 #include "wx/palette.h"
  36 #include "wx/app.h"
  37 #include "wx/dc.h"
  38 #include "wx/utils.h"
  39 #include "wx/settings.h"
  40
  41 #include "wx/log.h"
  42 #include <string.h>
  43
  44 #ifdef __WXMSW__
  45 #include <windows.h>
  46 #endif
  47
  48 #ifdef __WXMOTIF__
  49 #ifdef __VMS__
  50 #pragma message disable nosimpint
  51 #endif
  52 #include <Xm/Xm.h>
  53 #ifdef __VMS__
  54 #pragma message enable nosimpint
  55 #endif
  56 #endif
  57
  58 IMPLEMENT_CLASS(wxColourDatabase, wxList)
  59 IMPLEMENT_DYNAMIC_CLASS(wxFontList, wxList)
  60 IMPLEMENT_DYNAMIC_CLASS(wxPenList, wxList)
  61 IMPLEMENT_DYNAMIC_CLASS(wxBrushList, wxList)
  62 IMPLEMENT_DYNAMIC_CLASS(wxBitmapList, wxList)
  63 IMPLEMENT_DYNAMIC_CLASS(wxResourceCache, wxList)
  64
  65 IMPLEMENT_ABSTRACT_CLASS(wxDCBase, wxObject)
  66
  67 wxRect::wxRect(const wxPoint& topLeft, const wxPoint& bottomRight)
  68 {
  69   x = topLeft.x;
  70   y = topLeft.y;
  71   width = bottomRight.x - topLeft.x + 1;
  72   height = bottomRight.y - topLeft.y + 1;
  73
  74   if (width < 0)
  75   {
  76     width = -width;
  77     x -= width;
  78   }
  79
  80   if (height < 0)
  81   {
  82     height = -height;
  83     y -= height;
  84   }
  85 }
  86
  87 wxRect::wxRect(const wxPoint& point, const wxSize& size)
  88 {
  89     x = point.x; y = point.y;
  90     width = size.x; height = size.y;
  91 }
  92
  93 bool wxRect::operator==(const wxRect& rect) const
  94 {
  95   return ((x == rect.x) &&
  96           (y == rect.y) &&
  97           (width == rect.width) &&
  98           (height == rect.height));
  99 }
 100
 101 wxRect& wxRect::operator += (const wxRect& rect)
 102 {
 103     *this = (*this + rect);
 104     return ( *this ) ;
 105 }
 106
 107 wxRect wxRect::operator + (const wxRect& rect) const
 108 {
 109     int x1 = wxMin(this->x, rect.x);
 110     int y1 = wxMin(this->y, rect.y);
 111     int y2 = wxMax(y+height, rect.height+rect.y);
 112     int x2 = wxMax(x+width, rect.width+rect.x);
 113     return wxRect(x1, y1, x2-x1, y2-y1);
 114 }
 115
 116 bool wxRect::Inside(int cx, int cy) const
 117 {
 118     return ( (cx >= x) && (cy >= y)
 119           && ((cy - y) < height)
 120           && ((cx - x) < width)
 121           );
 122 }
 123
 124 wxColourDatabase::wxColourDatabase (int type) : wxList (type)
 125 {
 126 }
 127
 128 wxColourDatabase::~wxColourDatabase ()
 129 {
 130   // Cleanup Colour allocated in Initialize()
 131   wxNode *node = First ();
 132   while (node)
 133     {
 134       wxColour *col = (wxColour *) node->Data ();
 135       wxNode *next = node->Next ();
 136       delete col;
 137       node = next;
 138     }
 139 }
 140
 141 // Colour database stuff
 142 void wxColourDatabase::Initialize ()
 143 {
 144     static const struct wxColourDesc
 145     {
 146         const wxChar *name;
 147         int r,g,b;
 148     }
 149     wxColourTable[] =
 150     {
 151         {wxT("AQUAMARINE"),112, 219, 147},
 152         {wxT("BLACK"),0, 0, 0},
 153         {wxT("BLUE"), 0, 0, 255},
 154         {wxT("BLUE VIOLET"), 159, 95, 159},
 155         {wxT("BROWN"), 165, 42, 42},
 156         {wxT("CADET BLUE"), 95, 159, 159},
 157         {wxT("CORAL"), 255, 127, 0},
 158         {wxT("CORNFLOWER BLUE"), 66, 66, 111},
 159         {wxT("CYAN"), 0, 255, 255},
 160         {wxT("DARK GREY"), 47, 47, 47},   // ?
 161
 162         {wxT("DARK GREEN"), 47, 79, 47},
 163         {wxT("DARK OLIVE GREEN"), 79, 79, 47},
 164         {wxT("DARK ORCHID"), 153, 50, 204},
 165         {wxT("DARK SLATE BLUE"), 107, 35, 142},
 166         {wxT("DARK SLATE GREY"), 47, 79, 79},
 167         {wxT("DARK TURQUOISE"), 112, 147, 219},
 168         {wxT("DIM GREY"), 84, 84, 84},
 169         {wxT("FIREBRICK"), 142, 35, 35},
 170         {wxT("FOREST GREEN"), 35, 142, 35},
 171         {wxT("GOLD"), 204, 127, 50},
 172         {wxT("GOLDENROD"), 219, 219, 112},
 173         {wxT("GREY"), 128, 128, 128},
 174         {wxT("GREEN"), 0, 255, 0},
 175         {wxT("GREEN YELLOW"), 147, 219, 112},
 176         {wxT("INDIAN RED"), 79, 47, 47},
 177         {wxT("KHAKI"), 159, 159, 95},
 178         {wxT("LIGHT BLUE"), 191, 216, 216},
 179         {wxT("LIGHT GREY"), 192, 192, 192},
 180         {wxT("LIGHT STEEL BLUE"), 143, 143, 188},
 181         {wxT("LIME GREEN"), 50, 204, 50},
 182         {wxT("LIGHT MAGENTA"), 255, 0, 255},
 183         {wxT("MAGENTA"), 255, 0, 255},
 184         {wxT("MAROON"), 142, 35, 107},
 185         {wxT("MEDIUM AQUAMARINE"), 50, 204, 153},
 186         {wxT("MEDIUM GREY"), 100, 100, 100},
 187         {wxT("MEDIUM BLUE"), 50, 50, 204},
 188         {wxT("MEDIUM FOREST GREEN"), 107, 142, 35},
 189         {wxT("MEDIUM GOLDENROD"), 234, 234, 173},
 190         {wxT("MEDIUM ORCHID"), 147, 112, 219},
 191         {wxT("MEDIUM SEA GREEN"), 66, 111, 66},
 192         {wxT("MEDIUM SLATE BLUE"), 127, 0, 255},
 193         {wxT("MEDIUM SPRING GREEN"), 127, 255, 0},
 194         {wxT("MEDIUM TURQUOISE"), 112, 219, 219},
 195         {wxT("MEDIUM VIOLET RED"), 219, 112, 147},
 196         {wxT("MIDNIGHT BLUE"), 47, 47, 79},
 197         {wxT("NAVY"), 35, 35, 142},
 198         {wxT("ORANGE"), 204, 50, 50},
 199         {wxT("ORANGE RED"), 255, 0, 127},
 200         {wxT("ORCHID"), 219, 112, 219},
 201         {wxT("PALE GREEN"), 143, 188, 143},
 202         {wxT("PINK"), 188, 143, 234},
 203         {wxT("PLUM"), 234, 173, 234},
 204         {wxT("PURPLE"), 176, 0, 255},
 205         {wxT("RED"), 255, 0, 0},
 206         {wxT("SALMON"), 111, 66, 66},
 207         {wxT("SEA GREEN"), 35, 142, 107},
 208         {wxT("SIENNA"), 142, 107, 35},
 209         {wxT("SKY BLUE"), 50, 153, 204},
 210         {wxT("SLATE BLUE"), 0, 127, 255},
 211         {wxT("SPRING GREEN"), 0, 255, 127},
 212         {wxT("STEEL BLUE"), 35, 107, 142},
 213         {wxT("TAN"), 219, 147, 112},
 214         {wxT("THISTLE"), 216, 191, 216},
 215         {wxT("TURQUOISE"), 173, 234, 234},
 216         {wxT("VIOLET"), 79, 47, 79},
 217         {wxT("VIOLET RED"), 204, 50, 153},
 218         {wxT("WHEAT"), 216, 216, 191},
 219         {wxT("WHITE"), 255, 255, 255},
 220         {wxT("YELLOW"), 255, 255, 0},
 221         {wxT("YELLOW GREEN"), 153, 204, 50},
 222         {wxT("MEDIUM GOLDENROD"), 234, 234, 173},
 223         {wxT("MEDIUM FOREST GREEN"), 107, 142, 35},
 224         {wxT("LIGHT MAGENTA"), 255, 0, 255},
 225         {wxT("MEDIUM GREY"), 100, 100, 100},
 226     };
 227
 228     for ( size_t n = 0; n < WXSIZEOF(wxColourTable); n++ )
 229     {
 230         const wxColourDesc& cc = wxColourTable[n];
 231         Append(cc.name, new wxColour(cc.r,cc.g,cc.b));
 232     }
 233 }
 234
 235 /*
 236  * Changed by Ian Brown, July 1994.
 237  *
 238  * When running under X, the Colour Database starts off empty. The X server
 239  * is queried for the colour first time after which it is entered into the
 240  * database. This allows our client to use the server colour database which
 241  * is hopefully gamma corrected for the display being used.
 242  */
 243
 244 wxColour *wxColourDatabase::FindColour(const wxString& colour)
 245 {
 246     // VZ: make the comparaison case insensitive and also match both grey and
 247     //     gray
 248     wxString colName = colour;
 249     colName.MakeUpper();
 250     wxString colName2 = colName;
 251     if ( !colName2.Replace(_T("GRAY"), _T("GREY")) )
 252         colName2.clear();
 253
 254     wxNode *node = First();
 255     while ( node )
 256     {
 257         const wxChar *key = node->GetKeyString();
 258         if ( colName == key || colName2 == key )
 259         {
 260             return (wxColour *)node->Data();
 261         }
 262
 263         node = node->Next();
 264     }
 265
 266 #ifdef __WXMSW__
 267   return NULL;
 268 #endif
 269 #ifdef __WXPM__
 270   return NULL;
 271 #endif
 272
 273 // TODO for other implementations. This should really go into
 274 // platform-specific directories.
 275 #ifdef __WXMAC__
 276   return NULL;
 277 #endif
 278 #ifdef __WXSTUBS__
 279   return NULL;
 280 #endif
 281
 282 #ifdef __WXGTK__
 283   wxColour *col = new wxColour( colour );
 284
 285   if (!(col->Ok())) {
 286       delete col;
 287       return (wxColour *) NULL;
 288   }
 289   Append( colour, col );
 290   return col;
 291 #endif
 292
 293 #ifdef __X__
 294     XColor xcolour;
 295
 296 #ifdef __WXMOTIF__
 297     Display *display = XtDisplay((Widget) wxTheApp->GetTopLevelWidget()) ;
 298 #endif
 299 #ifdef __XVIEW__
 300     Xv_Screen screen = xv_get(xview_server, SERVER_NTH_SCREEN, 0);
 301     Xv_opaque root_window = xv_get(screen, XV_ROOT);
 302     Display *display = (Display *)xv_get(root_window, XV_DISPLAY);
 303 #endif
 304
 305     /* MATTHEW: [4] Use wxGetMainColormap */
 306     if (!XParseColor(display, (Colormap) wxTheApp->GetMainColormap((WXDisplay*) display), colour,&xcolour))
 307       return NULL;
 308
 309     unsigned char r = (unsigned char)(xcolour.red >> 8);
 310     unsigned char g = (unsigned char)(xcolour.green >> 8);
 311     unsigned char b = (unsigned char)(xcolour.blue >> 8);
 312
 313     wxColour *col = new wxColour(r, g, b);
 314     Append(colour, col);
 315
 316     return col;
 317 #endif // __X__
 318 }
 319
 320 wxString wxColourDatabase::FindName (const wxColour& colour) const
 321 {
 322     wxString name;
 323
 324     unsigned char red = colour.Red ();
 325     unsigned char green = colour.Green ();
 326     unsigned char blue = colour.Blue ();
 327
 328     for (wxNode * node = First (); node; node = node->Next ())
 329     {
 330         wxColour *col = (wxColour *) node->Data ();
 331
 332         if (col->Red () == red && col->Green () == green && col->Blue () == blue)
 333         {
 334             const wxChar *found = node->GetKeyString();
 335             if ( found )
 336             {
 337                 name = found;
 338
 339                 break;
 340             }
 341         }
 342     }
 343
 344     return name;
 345 }
 346
 347 void wxInitializeStockLists () {
 348   wxTheBrushList = new wxBrushList;
 349   wxThePenList = new wxPenList;
 350   wxTheFontList = new wxFontList;
 351   wxTheBitmapList = new wxBitmapList;
 352 }
 353
 354 void wxInitializeStockObjects ()
 355 {
 356 #ifdef __WXMOTIF__
 357 #endif
 358 #ifdef __X__
 359   // TODO
 360   //  wxFontPool = new XFontPool;
 361 #endif
 362
 363   // why under MSW fonts shouldn't have the standard system size?
 364 /*
 365 #ifdef __WXMSW__
 366   static const int sizeFont = 10;
 367 #else
 368   static const int sizeFont = 12;
 369 #endif
 370 */
 371
 372 //  wxNORMAL_FONT = new wxFont (sizeFont, wxMODERN, wxNORMAL, wxNORMAL);
 373   wxNORMAL_FONT = new wxFont(wxSystemSettings::GetSystemFont(wxSYS_DEFAULT_GUI_FONT));
 374   static const int sizeFont = wxNORMAL_FONT->GetPointSize();
 375
 376   wxSMALL_FONT = new wxFont (sizeFont - 2, wxSWISS, wxNORMAL, wxNORMAL);
 377   wxITALIC_FONT = new wxFont (sizeFont, wxROMAN, wxITALIC, wxNORMAL);
 378   wxSWISS_FONT = new wxFont (sizeFont, wxSWISS, wxNORMAL, wxNORMAL);
 379
 380   wxRED_PEN = new wxPen ("RED", 1, wxSOLID);
 381   wxCYAN_PEN = new wxPen ("CYAN", 1, wxSOLID);
 382   wxGREEN_PEN = new wxPen ("GREEN", 1, wxSOLID);
 383   wxBLACK_PEN = new wxPen ("BLACK", 1, wxSOLID);
 384   wxWHITE_PEN = new wxPen ("WHITE", 1, wxSOLID);
 385   wxTRANSPARENT_PEN = new wxPen ("BLACK", 1, wxTRANSPARENT);
 386   wxBLACK_DASHED_PEN = new wxPen ("BLACK", 1, wxSHORT_DASH);
 387   wxGREY_PEN = new wxPen ("GREY", 1, wxSOLID);
 388   wxMEDIUM_GREY_PEN = new wxPen ("MEDIUM GREY", 1, wxSOLID);
 389   wxLIGHT_GREY_PEN = new wxPen ("LIGHT GREY", 1, wxSOLID);
 390
 391   wxBLUE_BRUSH = new wxBrush ("BLUE", wxSOLID);
 392   wxGREEN_BRUSH = new wxBrush ("GREEN", wxSOLID);
 393   wxWHITE_BRUSH = new wxBrush ("WHITE", wxSOLID);
 394   wxBLACK_BRUSH = new wxBrush ("BLACK", wxSOLID);
 395   wxTRANSPARENT_BRUSH = new wxBrush ("BLACK", wxTRANSPARENT);
 396   wxCYAN_BRUSH = new wxBrush ("CYAN", wxSOLID);
 397   wxRED_BRUSH = new wxBrush ("RED", wxSOLID);
 398   wxGREY_BRUSH = new wxBrush ("GREY", wxSOLID);
 399   wxMEDIUM_GREY_BRUSH = new wxBrush ("MEDIUM GREY", wxSOLID);
 400   wxLIGHT_GREY_BRUSH = new wxBrush ("LIGHT GREY", wxSOLID);
 401
 402   wxBLACK = new wxColour ("BLACK");
 403   wxWHITE = new wxColour ("WHITE");
 404   wxRED = new wxColour ("RED");
 405   wxBLUE = new wxColour ("BLUE");
 406   wxGREEN = new wxColour ("GREEN");
 407   wxCYAN = new wxColour ("CYAN");
 408   wxLIGHT_GREY = new wxColour ("LIGHT GREY");
 409
 410   wxSTANDARD_CURSOR = new wxCursor (wxCURSOR_ARROW);
 411   wxHOURGLASS_CURSOR = new wxCursor (wxCURSOR_WAIT);
 412   wxCROSS_CURSOR = new wxCursor (wxCURSOR_CROSS);
 413 }
 414
 415 void wxDeleteStockObjects ()
 416 {
 417   wxDELETE(wxNORMAL_FONT);
 418   wxDELETE(wxSMALL_FONT);
 419   wxDELETE(wxITALIC_FONT);
 420   wxDELETE(wxSWISS_FONT);
 421
 422   wxDELETE(wxRED_PEN);
 423   wxDELETE(wxCYAN_PEN);
 424   wxDELETE(wxGREEN_PEN);
 425   wxDELETE(wxBLACK_PEN);
 426   wxDELETE(wxWHITE_PEN);
 427   wxDELETE(wxTRANSPARENT_PEN);
 428   wxDELETE(wxBLACK_DASHED_PEN);
 429   wxDELETE(wxGREY_PEN);
 430   wxDELETE(wxMEDIUM_GREY_PEN);
 431   wxDELETE(wxLIGHT_GREY_PEN);
 432
 433   wxDELETE(wxBLUE_BRUSH);
 434   wxDELETE(wxGREEN_BRUSH);
 435   wxDELETE(wxWHITE_BRUSH);
 436   wxDELETE(wxBLACK_BRUSH);
 437   wxDELETE(wxTRANSPARENT_BRUSH);
 438   wxDELETE(wxCYAN_BRUSH);
 439   wxDELETE(wxRED_BRUSH);
 440   wxDELETE(wxGREY_BRUSH);
 441   wxDELETE(wxMEDIUM_GREY_BRUSH);
 442   wxDELETE(wxLIGHT_GREY_BRUSH);
 443
 444   wxDELETE(wxBLACK);
 445   wxDELETE(wxWHITE);
 446   wxDELETE(wxRED);
 447   wxDELETE(wxBLUE);
 448   wxDELETE(wxGREEN);
 449   wxDELETE(wxCYAN);
 450   wxDELETE(wxLIGHT_GREY);
 451
 452   wxDELETE(wxSTANDARD_CURSOR);
 453   wxDELETE(wxHOURGLASS_CURSOR);
 454   wxDELETE(wxCROSS_CURSOR);
 455 }
 456
 457 void wxDeleteStockLists() {
 458   wxDELETE(wxTheBrushList);
 459   wxDELETE(wxThePenList);
 460   wxDELETE(wxTheFontList);
 461   wxDELETE(wxTheBitmapList);
 462 }
 463
 464 wxBitmapList::wxBitmapList ()
 465 {
 466 }
 467
 468 wxBitmapList::~wxBitmapList ()
 469 {
 470   wxNode *node = First ();
 471   while (node)
 472     {
 473       wxBitmap *bitmap = (wxBitmap *) node->Data ();
 474       wxNode *next = node->Next ();
 475       if (bitmap->GetVisible())
 476         delete bitmap;
 477       node = next;
 478     }
 479 }
 480
 481 // Pen and Brush lists
 482 wxPenList::~wxPenList ()
 483 {
 484   wxNode *node = First ();
 485   while (node)
 486     {
 487       wxPen *pen = (wxPen *) node->Data ();
 488       wxNode *next = node->Next ();
 489       if (pen->GetVisible())
 490         delete pen;
 491       node = next;
 492     }
 493 }
 494
 495 void wxPenList::AddPen (wxPen * pen)
 496 {
 497   Append (pen);
 498 }
 499
 500 void wxPenList::RemovePen (wxPen * pen)
 501 {
 502   DeleteObject (pen);
 503 }
 504
 505 wxPen *wxPenList::FindOrCreatePen (const wxColour& colour, int width, int style)
 506 {
 507   for (wxNode * node = First (); node; node = node->Next ())
 508     {
 509       wxPen *each_pen = (wxPen *) node->Data ();
 510       if (each_pen &&
 511           each_pen->GetVisible() &&
 512           each_pen->GetWidth () == width &&
 513           each_pen->GetStyle () == style &&
 514           each_pen->GetColour ().Red () == colour.Red () &&
 515           each_pen->GetColour ().Green () == colour.Green () &&
 516           each_pen->GetColour ().Blue () == colour.Blue ())
 517         return each_pen;
 518     }
 519   wxPen *pen = new wxPen (colour, width, style);
 520
 521   // Yes, we can return a pointer to this in a later FindOrCreatePen call,
 522   // because we created it within FindOrCreatePen. Safeguards against
 523   // returning a pointer to an automatic variable and hanging on to it
 524   // (dangling pointer).
 525   pen->SetVisible(TRUE);
 526
 527   return pen;
 528 }
 529
 530 wxBrushList::~wxBrushList ()
 531 {
 532   wxNode *node = First ();
 533   while (node)
 534     {
 535       wxBrush *brush = (wxBrush *) node->Data ();
 536       wxNode *next = node->Next ();
 537       if (brush->GetVisible())
 538         delete brush;
 539       node = next;
 540     }
 541 }
 542
 543 void wxBrushList::AddBrush (wxBrush * brush)
 544 {
 545   Append (brush);
 546 }
 547
 548 wxBrush *wxBrushList::FindOrCreateBrush (const wxColour& colour, int style)
 549 {
 550   for (wxNode * node = First (); node; node = node->Next ())
 551     {
 552       wxBrush *each_brush = (wxBrush *) node->Data ();
 553       if (each_brush &&
 554           each_brush->GetVisible() &&
 555           each_brush->GetStyle () == style &&
 556           each_brush->GetColour ().Red () == colour.Red () &&
 557           each_brush->GetColour ().Green () == colour.Green () &&
 558           each_brush->GetColour ().Blue () == colour.Blue ())
 559         return each_brush;
 560     }
 561
 562   // Yes, we can return a pointer to this in a later FindOrCreateBrush call,
 563   // because we created it within FindOrCreateBrush. Safeguards against
 564   // returning a pointer to an automatic variable and hanging on to it
 565   // (dangling pointer).
 566   wxBrush *brush = new wxBrush (colour, style);
 567
 568   brush->SetVisible(TRUE);
 569
 570   return brush;
 571 }
 572
 573 void wxBrushList::RemoveBrush (wxBrush * brush)
 574 {
 575   DeleteObject (brush);
 576 }
 577
 578 wxFontList::~wxFontList ()
 579 {
 580     wxNode *node = First ();
 581     while (node)
 582     {
 583         // Only delete objects that are 'visible', i.e.
 584         // that have been created using FindOrCreate...,
 585         // where the pointers are expected to be shared
 586         // (and therefore not deleted by any one part of an app).
 587         wxFont *font = (wxFont *) node->Data ();
 588         wxNode *next = node->Next ();
 589         if (font->GetVisible())
 590             delete font;
 591         node = next;
 592     }
 593 }
 594
 595 void wxFontList::AddFont (wxFont * font)
 596 {
 597   Append (font);
 598 }
 599
 600 void wxFontList::RemoveFont (wxFont * font)
 601 {
 602   DeleteObject (font);
 603 }
 604
 605 wxFont *wxFontList::FindOrCreateFont(int pointSize,
 606                                      int family,
 607                                      int style,
 608                                      int weight,
 609                                      bool underline,
 610                                      const wxString& facename,
 611                                      wxFontEncoding encoding)
 612 {
 613     wxFont *font = (wxFont *)NULL;
 614     wxNode *node;
 615     for ( node = First(); node; node = node->Next() )
 616     {
 617         font = (wxFont *)node->Data();
 618         if ( font->GetVisible() &&
 619              font->Ok() &&
 620              font->GetPointSize () == pointSize &&
 621              font->GetStyle () == style &&
 622              font->GetWeight () == weight &&
 623              font->GetUnderlined () == underline )
 624         {
 625             int fontFamily = font->GetFamily();
 626
 627 #if defined(__WXGTK__)
 628             // under GTK the default family is wxSWISS, so looking for a font
 629             // with wxDEFAULT family should return a wxSWISS one instead of
 630             // creating a new one
 631             bool same = (fontFamily == family) ||
 632                         (fontFamily == wxSWISS && family == wxDEFAULT);
 633 #else // !GTK
 634             // VZ: but why elsewhere do we require an exact match? mystery...
 635             bool same = fontFamily == family;
 636 #endif // GTK/!GTK
 637
 638             // empty facename matches anything at all: this is bad because
 639             // depending on which fonts are already created, we might get back
 640             // a different font if we create it with empty facename, but it is
 641             // still better than never matching anything in the cache at all
 642             // in this case
 643             if ( same && !!facename )
 644             {
 645                 const wxString& fontFace = font->GetFaceName();
 646
 647                 // empty facename matches everything
 648                 same = !fontFace || fontFace == facename;
 649             }
 650
 651             if ( same && (encoding != wxFONTENCODING_DEFAULT) )
 652             {
 653                 // have to match the encoding too
 654                 same = font->GetEncoding() == encoding;
 655             }
 656
 657             if ( same )
 658             {
 659                 return font;
 660             }
 661         }
 662     }
 663
 664     if ( !node )
 665     {
 666         // font not found, create the new one
 667         font = new wxFont(pointSize, family, style, weight,
 668                           underline, facename, encoding);
 669
 670         // and mark it as being cacheable
 671         font->SetVisible(TRUE);
 672     }
 673
 674     return font;
 675 }
 676
 677 void wxBitmapList::AddBitmap(wxBitmap *bitmap)
 678 {
 679     Append(bitmap);
 680 }
 681
 682 void wxBitmapList::RemoveBitmap(wxBitmap *bitmap)
 683 {
 684     DeleteObject(bitmap);
 685 }
 686
 687 wxSize wxGetDisplaySize()
 688 {
 689     int x, y;
 690     wxDisplaySize(& x, & y);
 691     return wxSize(x, y);
 692 }
 693
 694 wxResourceCache::~wxResourceCache ()
 695 {
 696     wxNode *node = First ();
 697     while (node) {
 698         wxObject *item = (wxObject *)node->Data();
 699         delete item;
 700
 701         node = node->Next ();
 702     }
 703 }
 704