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 wxRect& wxRect::Inflate(wxCoord dx, wxCoord dy)
 117 {
 118     x -= dx;
 119     y -= dy;
 120     width += 2*dx;
 121     height += 2*dy;
 122
 123     // check that we didn't make the rectangle invalid by accident (you almost
 124     // never want to have negative coords and never want negative size)
 125     wxASSERT_MSG( x >= 0 && y >= 0 && width >= 0 && height >= 0,
 126                   _T("wxRect::Inflate() resulted in an invalid rectangle!") );
 127
 128     return *this;
 129 }
 130
 131 bool wxRect::Inside(int cx, int cy) const
 132 {
 133     return ( (cx >= x) && (cy >= y)
 134           && ((cy - y) < height)
 135           && ((cx - x) < width)
 136           );
 137 }
 138
 139 wxRect& wxRect::Intersect(const wxRect& rect)
 140 {
 141     int x2 = GetRight(),
 142         y2 = GetBottom();
 143
 144     if ( x < rect.x )
 145         x = rect.x;
 146     if ( y < rect.y )
 147         y = rect.y;
 148     if ( x2 > rect.GetRight() )
 149         x2 = rect.GetRight();
 150     if ( y2 > rect.GetBottom() )
 151         y2 = rect.GetBottom();
 152
 153     width = x2 - x + 1;
 154     height = y2 - y + 1;
 155
 156     if ( width <= 0 || height <= 0 )
 157     {
 158         width =
 159         height = 0;
 160     }
 161
 162     return *this;
 163 }
 164
 165 bool wxRect::Intersects(const wxRect& rect) const
 166 {
 167     wxRect r = Intersect(rect);
 168
 169     // if there is no intersection, both width and height are 0
 170     return r.width != 0;
 171 }
 172
 173 wxColourDatabase::wxColourDatabase (int type) : wxList (type)
 174 {
 175 }
 176
 177 wxColourDatabase::~wxColourDatabase ()
 178 {
 179   // Cleanup Colour allocated in Initialize()
 180   wxNode *node = First ();
 181   while (node)
 182     {
 183       wxColour *col = (wxColour *) node->Data ();
 184       wxNode *next = node->Next ();
 185       delete col;
 186       node = next;
 187     }
 188 #ifdef __WXPM__
 189     delete [] m_palTable;
 190 #endif
 191 }
 192
 193 // Colour database stuff
 194 void wxColourDatabase::Initialize ()
 195 {
 196     static const struct wxColourDesc
 197     {
 198         const wxChar *name;
 199         int r,g,b;
 200     }
 201     wxColourTable[] =
 202     {
 203         {wxT("AQUAMARINE"),112, 219, 147},
 204         {wxT("BLACK"),0, 0, 0},
 205         {wxT("BLUE"), 0, 0, 255},
 206         {wxT("BLUE VIOLET"), 159, 95, 159},
 207         {wxT("BROWN"), 165, 42, 42},
 208         {wxT("CADET BLUE"), 95, 159, 159},
 209         {wxT("CORAL"), 255, 127, 0},
 210         {wxT("CORNFLOWER BLUE"), 66, 66, 111},
 211         {wxT("CYAN"), 0, 255, 255},
 212         {wxT("DARK GREY"), 47, 47, 47},   // ?
 213
 214         {wxT("DARK GREEN"), 47, 79, 47},
 215         {wxT("DARK OLIVE GREEN"), 79, 79, 47},
 216         {wxT("DARK ORCHID"), 153, 50, 204},
 217         {wxT("DARK SLATE BLUE"), 107, 35, 142},
 218         {wxT("DARK SLATE GREY"), 47, 79, 79},
 219         {wxT("DARK TURQUOISE"), 112, 147, 219},
 220         {wxT("DIM GREY"), 84, 84, 84},
 221         {wxT("FIREBRICK"), 142, 35, 35},
 222         {wxT("FOREST GREEN"), 35, 142, 35},
 223         {wxT("GOLD"), 204, 127, 50},
 224         {wxT("GOLDENROD"), 219, 219, 112},
 225         {wxT("GREY"), 128, 128, 128},
 226         {wxT("GREEN"), 0, 255, 0},
 227         {wxT("GREEN YELLOW"), 147, 219, 112},
 228         {wxT("INDIAN RED"), 79, 47, 47},
 229         {wxT("KHAKI"), 159, 159, 95},
 230         {wxT("LIGHT BLUE"), 191, 216, 216},
 231         {wxT("LIGHT GREY"), 192, 192, 192},
 232         {wxT("LIGHT STEEL BLUE"), 143, 143, 188},
 233         {wxT("LIME GREEN"), 50, 204, 50},
 234         {wxT("LIGHT MAGENTA"), 255, 0, 255},
 235         {wxT("MAGENTA"), 255, 0, 255},
 236         {wxT("MAROON"), 142, 35, 107},
 237         {wxT("MEDIUM AQUAMARINE"), 50, 204, 153},
 238         {wxT("MEDIUM GREY"), 100, 100, 100},
 239         {wxT("MEDIUM BLUE"), 50, 50, 204},
 240         {wxT("MEDIUM FOREST GREEN"), 107, 142, 35},
 241         {wxT("MEDIUM GOLDENROD"), 234, 234, 173},
 242         {wxT("MEDIUM ORCHID"), 147, 112, 219},
 243         {wxT("MEDIUM SEA GREEN"), 66, 111, 66},
 244         {wxT("MEDIUM SLATE BLUE"), 127, 0, 255},
 245         {wxT("MEDIUM SPRING GREEN"), 127, 255, 0},
 246         {wxT("MEDIUM TURQUOISE"), 112, 219, 219},
 247         {wxT("MEDIUM VIOLET RED"), 219, 112, 147},
 248         {wxT("MIDNIGHT BLUE"), 47, 47, 79},
 249         {wxT("NAVY"), 35, 35, 142},
 250         {wxT("ORANGE"), 204, 50, 50},
 251         {wxT("ORANGE RED"), 255, 0, 127},
 252         {wxT("ORCHID"), 219, 112, 219},
 253         {wxT("PALE GREEN"), 143, 188, 143},
 254         {wxT("PINK"), 188, 143, 234},
 255         {wxT("PLUM"), 234, 173, 234},
 256         {wxT("PURPLE"), 176, 0, 255},
 257         {wxT("RED"), 255, 0, 0},
 258         {wxT("SALMON"), 111, 66, 66},
 259         {wxT("SEA GREEN"), 35, 142, 107},
 260         {wxT("SIENNA"), 142, 107, 35},
 261         {wxT("SKY BLUE"), 50, 153, 204},
 262         {wxT("SLATE BLUE"), 0, 127, 255},
 263         {wxT("SPRING GREEN"), 0, 255, 127},
 264         {wxT("STEEL BLUE"), 35, 107, 142},
 265         {wxT("TAN"), 219, 147, 112},
 266         {wxT("THISTLE"), 216, 191, 216},
 267         {wxT("TURQUOISE"), 173, 234, 234},
 268         {wxT("VIOLET"), 79, 47, 79},
 269         {wxT("VIOLET RED"), 204, 50, 153},
 270         {wxT("WHEAT"), 216, 216, 191},
 271         {wxT("WHITE"), 255, 255, 255},
 272         {wxT("YELLOW"), 255, 255, 0},
 273         {wxT("YELLOW GREEN"), 153, 204, 50},
 274         {wxT("MEDIUM GOLDENROD"), 234, 234, 173},
 275         {wxT("MEDIUM FOREST GREEN"), 107, 142, 35},
 276         {wxT("LIGHT MAGENTA"), 255, 0, 255},
 277         {wxT("MEDIUM GREY"), 100, 100, 100},
 278     };
 279
 280     size_t      n;
 281
 282     for ( n = 0; n < WXSIZEOF(wxColourTable); n++ )
 283     {
 284         const wxColourDesc& cc = wxColourTable[n];
 285         Append(cc.name, new wxColour(cc.r,cc.g,cc.b));
 286     }
 287 #ifdef __WXPM__
 288     m_palTable = new long[n];
 289     for ( n = 0; n < WXSIZEOF(wxColourTable); n++ )
 290     {
 291         const wxColourDesc& cc = wxColourTable[n];
 292         m_palTable[n] = OS2RGB(cc.r,cc.g,cc.b);
 293     }
 294     m_nSize = n;
 295 #endif
 296 }
 297
 298 /*
 299  * Changed by Ian Brown, July 1994.
 300  *
 301  * When running under X, the Colour Database starts off empty. The X server
 302  * is queried for the colour first time after which it is entered into the
 303  * database. This allows our client to use the server colour database which
 304  * is hopefully gamma corrected for the display being used.
 305  */
 306
 307 wxColour *wxColourDatabase::FindColour(const wxString& colour)
 308 {
 309     // VZ: make the comparaison case insensitive and also match both grey and
 310     //     gray
 311     wxString colName = colour;
 312     colName.MakeUpper();
 313     wxString colName2 = colName;
 314     if ( !colName2.Replace(_T("GRAY"), _T("GREY")) )
 315         colName2.clear();
 316
 317     wxNode *node = First();
 318     while ( node )
 319     {
 320         const wxChar *key = node->GetKeyString();
 321         if ( colName == key || colName2 == key )
 322         {
 323             return (wxColour *)node->Data();
 324         }
 325
 326         node = node->Next();
 327     }
 328
 329 #ifdef __WXMSW__
 330   return NULL;
 331 #endif
 332 #ifdef __WXPM__
 333   return NULL;
 334 #endif
 335 #ifdef __WXMGL__
 336   return NULL;
 337 #endif
 338
 339 // TODO for other implementations. This should really go into
 340 // platform-specific directories.
 341 #ifdef __WXMAC__
 342   return NULL;
 343 #endif
 344 #ifdef __WXSTUBS__
 345   return NULL;
 346 #endif
 347
 348 #ifdef __WXGTK__
 349   wxColour *col = new wxColour( colour );
 350
 351   if (!(col->Ok())) {
 352       delete col;
 353       return (wxColour *) NULL;
 354   }
 355   Append( colour, col );
 356   return col;
 357 #endif
 358
 359 #ifdef __X__
 360     XColor xcolour;
 361
 362 #ifdef __WXMOTIF__
 363     Display *display = XtDisplay((Widget) wxTheApp->GetTopLevelWidget()) ;
 364 #endif
 365 #ifdef __XVIEW__
 366     Xv_Screen screen = xv_get(xview_server, SERVER_NTH_SCREEN, 0);
 367     Xv_opaque root_window = xv_get(screen, XV_ROOT);
 368     Display *display = (Display *)xv_get(root_window, XV_DISPLAY);
 369 #endif
 370
 371     /* MATTHEW: [4] Use wxGetMainColormap */
 372     if (!XParseColor(display, (Colormap) wxTheApp->GetMainColormap((WXDisplay*) display), colour,&xcolour))
 373       return NULL;
 374
 375     unsigned char r = (unsigned char)(xcolour.red >> 8);
 376     unsigned char g = (unsigned char)(xcolour.green >> 8);
 377     unsigned char b = (unsigned char)(xcolour.blue >> 8);
 378
 379     wxColour *col = new wxColour(r, g, b);
 380     Append(colour, col);
 381
 382     return col;
 383 #endif // __X__
 384 }
 385
 386 wxString wxColourDatabase::FindName (const wxColour& colour) const
 387 {
 388     wxString name;
 389
 390     unsigned char red = colour.Red ();
 391     unsigned char green = colour.Green ();
 392     unsigned char blue = colour.Blue ();
 393
 394     for (wxNode * node = First (); node; node = node->Next ())
 395     {
 396         wxColour *col = (wxColour *) node->Data ();
 397
 398         if (col->Red () == red && col->Green () == green && col->Blue () == blue)
 399         {
 400             const wxChar *found = node->GetKeyString();
 401             if ( found )
 402             {
 403                 name = found;
 404
 405                 break;
 406             }
 407         }
 408     }
 409
 410     return name;
 411 }
 412
 413 void wxInitializeStockLists () {
 414   wxTheBrushList = new wxBrushList;
 415   wxThePenList = new wxPenList;
 416   wxTheFontList = new wxFontList;
 417   wxTheBitmapList = new wxBitmapList;
 418 }
 419
 420 void wxInitializeStockObjects ()
 421 {
 422 #ifdef __WXMOTIF__
 423 #endif
 424 #ifdef __X__
 425   // TODO
 426   //  wxFontPool = new XFontPool;
 427 #endif
 428
 429   // why under MSW fonts shouldn't have the standard system size?
 430 /*
 431 #ifdef __WXMSW__
 432   static const int sizeFont = 10;
 433 #else
 434 #endif
 435 */
 436 #if defined(__WXPM__) || defined(__WXMAC__)
 437   static const int sizeFont = 12;
 438   wxNORMAL_FONT = new wxFont (sizeFont, wxMODERN, wxNORMAL, wxNORMAL);
 439 #else
 440   wxNORMAL_FONT = new wxFont(wxSystemSettings::GetSystemFont(wxSYS_DEFAULT_GUI_FONT));
 441   static const int sizeFont = wxNORMAL_FONT->GetPointSize();
 442 #endif
 443
 444   wxSMALL_FONT = new wxFont (sizeFont - 2, wxSWISS, wxNORMAL, wxNORMAL);
 445   wxITALIC_FONT = new wxFont (sizeFont, wxROMAN, wxITALIC, wxNORMAL);
 446   wxSWISS_FONT = new wxFont (sizeFont, wxSWISS, wxNORMAL, wxNORMAL);
 447
 448   wxRED_PEN = new wxPen ("RED", 1, wxSOLID);
 449   wxCYAN_PEN = new wxPen ("CYAN", 1, wxSOLID);
 450   wxGREEN_PEN = new wxPen ("GREEN", 1, wxSOLID);
 451   wxBLACK_PEN = new wxPen ("BLACK", 1, wxSOLID);
 452   wxWHITE_PEN = new wxPen ("WHITE", 1, wxSOLID);
 453   wxTRANSPARENT_PEN = new wxPen ("BLACK", 1, wxTRANSPARENT);
 454   wxBLACK_DASHED_PEN = new wxPen ("BLACK", 1, wxSHORT_DASH);
 455   wxGREY_PEN = new wxPen ("GREY", 1, wxSOLID);
 456   wxMEDIUM_GREY_PEN = new wxPen ("MEDIUM GREY", 1, wxSOLID);
 457   wxLIGHT_GREY_PEN = new wxPen ("LIGHT GREY", 1, wxSOLID);
 458
 459   wxBLUE_BRUSH = new wxBrush ("BLUE", wxSOLID);
 460   wxGREEN_BRUSH = new wxBrush ("GREEN", wxSOLID);
 461   wxWHITE_BRUSH = new wxBrush ("WHITE", wxSOLID);
 462   wxBLACK_BRUSH = new wxBrush ("BLACK", wxSOLID);
 463   wxTRANSPARENT_BRUSH = new wxBrush ("BLACK", wxTRANSPARENT);
 464   wxCYAN_BRUSH = new wxBrush ("CYAN", wxSOLID);
 465   wxRED_BRUSH = new wxBrush ("RED", wxSOLID);
 466   wxGREY_BRUSH = new wxBrush ("GREY", wxSOLID);
 467   wxMEDIUM_GREY_BRUSH = new wxBrush ("MEDIUM GREY", wxSOLID);
 468   wxLIGHT_GREY_BRUSH = new wxBrush ("LIGHT GREY", wxSOLID);
 469
 470   wxBLACK = new wxColour ("BLACK");
 471   wxWHITE = new wxColour ("WHITE");
 472   wxRED = new wxColour ("RED");
 473   wxBLUE = new wxColour ("BLUE");
 474   wxGREEN = new wxColour ("GREEN");
 475   wxCYAN = new wxColour ("CYAN");
 476   wxLIGHT_GREY = new wxColour ("LIGHT GREY");
 477
 478   wxSTANDARD_CURSOR = new wxCursor (wxCURSOR_ARROW);
 479   wxHOURGLASS_CURSOR = new wxCursor (wxCURSOR_WAIT);
 480   wxCROSS_CURSOR = new wxCursor (wxCURSOR_CROSS);
 481 }
 482
 483 void wxDeleteStockObjects ()
 484 {
 485   wxDELETE(wxNORMAL_FONT);
 486   wxDELETE(wxSMALL_FONT);
 487   wxDELETE(wxITALIC_FONT);
 488   wxDELETE(wxSWISS_FONT);
 489
 490   wxDELETE(wxRED_PEN);
 491   wxDELETE(wxCYAN_PEN);
 492   wxDELETE(wxGREEN_PEN);
 493   wxDELETE(wxBLACK_PEN);
 494   wxDELETE(wxWHITE_PEN);
 495   wxDELETE(wxTRANSPARENT_PEN);
 496   wxDELETE(wxBLACK_DASHED_PEN);
 497   wxDELETE(wxGREY_PEN);
 498   wxDELETE(wxMEDIUM_GREY_PEN);
 499   wxDELETE(wxLIGHT_GREY_PEN);
 500
 501   wxDELETE(wxBLUE_BRUSH);
 502   wxDELETE(wxGREEN_BRUSH);
 503   wxDELETE(wxWHITE_BRUSH);
 504   wxDELETE(wxBLACK_BRUSH);
 505   wxDELETE(wxTRANSPARENT_BRUSH);
 506   wxDELETE(wxCYAN_BRUSH);
 507   wxDELETE(wxRED_BRUSH);
 508   wxDELETE(wxGREY_BRUSH);
 509   wxDELETE(wxMEDIUM_GREY_BRUSH);
 510   wxDELETE(wxLIGHT_GREY_BRUSH);
 511
 512   wxDELETE(wxBLACK);
 513   wxDELETE(wxWHITE);
 514   wxDELETE(wxRED);
 515   wxDELETE(wxBLUE);
 516   wxDELETE(wxGREEN);
 517   wxDELETE(wxCYAN);
 518   wxDELETE(wxLIGHT_GREY);
 519
 520   wxDELETE(wxSTANDARD_CURSOR);
 521   wxDELETE(wxHOURGLASS_CURSOR);
 522   wxDELETE(wxCROSS_CURSOR);
 523 }
 524
 525 void wxDeleteStockLists() {
 526   wxDELETE(wxTheBrushList);
 527   wxDELETE(wxThePenList);
 528   wxDELETE(wxTheFontList);
 529   wxDELETE(wxTheBitmapList);
 530 }
 531
 532 wxBitmapList::wxBitmapList ()
 533 {
 534 }
 535
 536 wxBitmapList::~wxBitmapList ()
 537 {
 538   wxNode *node = First ();
 539   while (node)
 540     {
 541       wxBitmap *bitmap = (wxBitmap *) node->Data ();
 542       wxNode *next = node->Next ();
 543       if (bitmap->GetVisible())
 544         delete bitmap;
 545       node = next;
 546     }
 547 }
 548
 549 // Pen and Brush lists
 550 wxPenList::~wxPenList ()
 551 {
 552   wxNode *node = First ();
 553   while (node)
 554     {
 555       wxPen *pen = (wxPen *) node->Data ();
 556       wxNode *next = node->Next ();
 557       if (pen->GetVisible())
 558         delete pen;
 559       node = next;
 560     }
 561 }
 562
 563 void wxPenList::AddPen (wxPen * pen)
 564 {
 565   Append (pen);
 566 }
 567
 568 void wxPenList::RemovePen (wxPen * pen)
 569 {
 570   DeleteObject (pen);
 571 }
 572
 573 wxPen *wxPenList::FindOrCreatePen (const wxColour& colour, int width, int style)
 574 {
 575     for (wxNode * node = First (); node; node = node->Next ())
 576     {
 577         wxPen *each_pen = (wxPen *) node->Data ();
 578         if (each_pen &&
 579                 each_pen->GetVisible() &&
 580                 each_pen->GetWidth () == width &&
 581                 each_pen->GetStyle () == style &&
 582                 each_pen->GetColour ().Red () == colour.Red () &&
 583                 each_pen->GetColour ().Green () == colour.Green () &&
 584                 each_pen->GetColour ().Blue () == colour.Blue ())
 585             return each_pen;
 586     }
 587
 588     wxPen *pen = new wxPen (colour, width, style);
 589     if ( !pen->Ok() )
 590     {
 591         // don't save the invalid pens in the list
 592         delete pen;
 593
 594         return NULL;
 595     }
 596
 597     // Yes, we can return a pointer to this in a later FindOrCreatePen call,
 598     // because we created it within FindOrCreatePen. Safeguards against
 599     // returning a pointer to an automatic variable and hanging on to it
 600     // (dangling pointer).
 601     pen->SetVisible(TRUE);
 602
 603     return pen;
 604 }
 605
 606 wxBrushList::~wxBrushList ()
 607 {
 608   wxNode *node = First ();
 609   while (node)
 610     {
 611       wxBrush *brush = (wxBrush *) node->Data ();
 612       wxNode *next = node->Next ();
 613       if (brush->GetVisible())
 614         delete brush;
 615       node = next;
 616     }
 617 }
 618
 619 void wxBrushList::AddBrush (wxBrush * brush)
 620 {
 621   Append (brush);
 622 }
 623
 624 wxBrush *wxBrushList::FindOrCreateBrush (const wxColour& colour, int style)
 625 {
 626     for (wxNode * node = First (); node; node = node->Next ())
 627     {
 628         wxBrush *each_brush = (wxBrush *) node->Data ();
 629         if (each_brush &&
 630                 each_brush->GetVisible() &&
 631                 each_brush->GetStyle () == style &&
 632                 each_brush->GetColour ().Red () == colour.Red () &&
 633                 each_brush->GetColour ().Green () == colour.Green () &&
 634                 each_brush->GetColour ().Blue () == colour.Blue ())
 635             return each_brush;
 636     }
 637
 638     wxBrush *brush = new wxBrush (colour, style);
 639
 640     if ( !brush->Ok() )
 641     {
 642         // don't put the brushes we failed to create into the list
 643         delete brush;
 644
 645         return NULL;
 646     }
 647
 648     brush->SetVisible(TRUE);
 649
 650     // Yes, we can return a pointer to this in a later FindOrCreateBrush call,
 651     // because we created it within FindOrCreateBrush. Safeguards against
 652     // returning a pointer to an automatic variable and hanging on to it
 653     // (dangling pointer).
 654     return brush;
 655 }
 656
 657 void wxBrushList::RemoveBrush (wxBrush * brush)
 658 {
 659   DeleteObject (brush);
 660 }
 661
 662 wxFontList::~wxFontList ()
 663 {
 664     wxNode *node = First ();
 665     while (node)
 666     {
 667         // Only delete objects that are 'visible', i.e.
 668         // that have been created using FindOrCreate...,
 669         // where the pointers are expected to be shared
 670         // (and therefore not deleted by any one part of an app).
 671         wxFont *font = (wxFont *) node->Data ();
 672         wxNode *next = node->Next ();
 673         if (font->GetVisible())
 674             delete font;
 675         node = next;
 676     }
 677 }
 678
 679 void wxFontList::AddFont (wxFont * font)
 680 {
 681   Append (font);
 682 }
 683
 684 void wxFontList::RemoveFont (wxFont * font)
 685 {
 686   DeleteObject (font);
 687 }
 688
 689 wxFont *wxFontList::FindOrCreateFont(int pointSize,
 690                                      int family,
 691                                      int style,
 692                                      int weight,
 693                                      bool underline,
 694                                      const wxString& facename,
 695                                      wxFontEncoding encoding)
 696 {
 697     wxFont *font = (wxFont *)NULL;
 698     wxNode *node;
 699     for ( node = First(); node; node = node->Next() )
 700     {
 701         font = (wxFont *)node->Data();
 702         if ( font->GetVisible() &&
 703              font->Ok() &&
 704              font->GetPointSize () == pointSize &&
 705              font->GetStyle () == style &&
 706              font->GetWeight () == weight &&
 707              font->GetUnderlined () == underline )
 708         {
 709             int fontFamily = font->GetFamily();
 710
 711 #if defined(__WXGTK__)
 712             // under GTK the default family is wxSWISS, so looking for a font
 713             // with wxDEFAULT family should return a wxSWISS one instead of
 714             // creating a new one
 715             bool same = (fontFamily == family) ||
 716                         (fontFamily == wxSWISS && family == wxDEFAULT);
 717 #else // !GTK
 718             // VZ: but why elsewhere do we require an exact match? mystery...
 719             bool same = fontFamily == family;
 720 #endif // GTK/!GTK
 721
 722             // empty facename matches anything at all: this is bad because
 723             // depending on which fonts are already created, we might get back
 724             // a different font if we create it with empty facename, but it is
 725             // still better than never matching anything in the cache at all
 726             // in this case
 727             if ( same && !!facename )
 728             {
 729                 const wxString& fontFace = font->GetFaceName();
 730
 731                 // empty facename matches everything
 732                 same = !fontFace || fontFace == facename;
 733             }
 734
 735             if ( same && (encoding != wxFONTENCODING_DEFAULT) )
 736             {
 737                 // have to match the encoding too
 738                 same = font->GetEncoding() == encoding;
 739             }
 740
 741             if ( same )
 742             {
 743                 return font;
 744             }
 745         }
 746     }
 747
 748     if ( !node )
 749     {
 750         // font not found, create the new one
 751         font = new wxFont(pointSize, family, style, weight,
 752                           underline, facename, encoding);
 753
 754         // and mark it as being cacheable
 755         font->SetVisible(TRUE);
 756     }
 757
 758     return font;
 759 }
 760
 761 void wxBitmapList::AddBitmap(wxBitmap *bitmap)
 762 {
 763     Append(bitmap);
 764 }
 765
 766 void wxBitmapList::RemoveBitmap(wxBitmap *bitmap)
 767 {
 768     DeleteObject(bitmap);
 769 }
 770
 771 wxSize wxGetDisplaySize()
 772 {
 773     int x, y;
 774     wxDisplaySize(& x, & y);
 775     return wxSize(x, y);
 776 }
 777
 778 wxRect wxGetClientDisplayRect()
 779 {
 780     int x, y, width, height;
 781     wxClientDisplayRect(&x, &y, &width, &height);  // call plat-specific version
 782     return wxRect(x, y, width, height);
 783 }
 784
 785 wxSize wxGetDisplaySizeMM()
 786 {
 787     int x, y;
 788     wxDisplaySizeMM(& x, & y);
 789     return wxSize(x, y);
 790 }
 791
 792 wxResourceCache::~wxResourceCache ()
 793 {
 794     wxNode *node = First ();
 795     while (node) {
 796         wxObject *item = (wxObject *)node->Data();
 797         delete item;
 798
 799         node = node->Next ();
 800     }
 801 }
 802