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