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