src/gtk/bitmap.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        bitmap.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // RCS-ID:      $Id$
   6 // Copyright:   (c) 1998 Robert Roebling
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  11 #pragma implementation "bitmap.h"
  12 #endif
  13
  14 // For compilers that support precompilation, includes "wx.h".
  15 #include "wx/wxprec.h"
  16
  17 #include "wx/defs.h"
  18
  19 #include "wx/bitmap.h"
  20 #include "wx/palette.h"
  21 #include "wx/icon.h"
  22 #include "wx/filefn.h"
  23 #include "wx/image.h"
  24 #include "wx/dcmemory.h"
  25 #include "wx/app.h"
  26
  27 #ifdef __WXGTK20__
  28     // need this to get gdk_image_new_bitmap()
  29     #define GDK_ENABLE_BROKEN
  30 #endif
  31
  32 #include <gdk/gdk.h>
  33 #include <gtk/gtk.h>
  34 #include <gdk/gdkx.h>
  35
  36 #ifdef __WXGTK20__
  37     #include <gdk/gdkimage.h>
  38 #else // GTK+ 1.2
  39     #include <gdk/gdkrgb.h>
  40 #endif // GTK+ 2.0/1.2
  41
  42 #include "wx/math.h"
  43
  44 extern void gdk_wx_draw_bitmap     (GdkDrawable  *drawable,
  45                           GdkGC               *gc,
  46                           GdkDrawable  *src,
  47                           gint                xsrc,
  48                           gint                ysrc,
  49                           gint                xdest,
  50                           gint                ydest,
  51                           gint                width,
  52                           gint                height);
  53
  54 //-----------------------------------------------------------------------------
  55 // data
  56 //-----------------------------------------------------------------------------
  57
  58 extern GtkWidget *wxGetRootWindow();
  59
  60 //-----------------------------------------------------------------------------
  61 // wxMask
  62 //-----------------------------------------------------------------------------
  63
  64 IMPLEMENT_DYNAMIC_CLASS(wxMask,wxObject)
  65
  66 wxMask::wxMask()
  67 {
  68     m_bitmap = (GdkBitmap *) NULL;
  69 }
  70
  71 wxMask::wxMask( const wxBitmap& bitmap, const wxColour& colour )
  72 {
  73     m_bitmap = (GdkBitmap *) NULL;
  74     Create( bitmap, colour );
  75 }
  76
  77 wxMask::wxMask( const wxBitmap& bitmap, int paletteIndex )
  78 {
  79     m_bitmap = (GdkBitmap *) NULL;
  80     Create( bitmap, paletteIndex );
  81 }
  82
  83 wxMask::wxMask( const wxBitmap& bitmap )
  84 {
  85     m_bitmap = (GdkBitmap *) NULL;
  86     Create( bitmap );
  87 }
  88
  89 wxMask::~wxMask()
  90 {
  91     if (m_bitmap)
  92         gdk_bitmap_unref( m_bitmap );
  93 }
  94
  95 bool wxMask::Create( const wxBitmap& bitmap,
  96                      const wxColour& colour )
  97 {
  98     if (m_bitmap)
  99     {
 100         gdk_bitmap_unref( m_bitmap );
 101         m_bitmap = (GdkBitmap*) NULL;
 102     }
 103
 104     wxImage image = bitmap.ConvertToImage();
 105     if (!image.Ok()) return FALSE;
 106
 107     m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, image.GetWidth(), image.GetHeight(), 1 );
 108     GdkGC *gc = gdk_gc_new( m_bitmap );
 109
 110     GdkColor color;
 111     color.red = 65000;
 112     color.green = 65000;
 113     color.blue = 65000;
 114     color.pixel = 1;
 115     gdk_gc_set_foreground( gc, &color );
 116     gdk_gc_set_fill( gc, GDK_SOLID );
 117     gdk_draw_rectangle( m_bitmap, gc, TRUE, 0, 0, image.GetWidth(), image.GetHeight() );
 118
 119     unsigned char *data = image.GetData();
 120     int index = 0;
 121
 122     unsigned char red = colour.Red();
 123     unsigned char green = colour.Green();
 124     unsigned char blue = colour.Blue();
 125
 126     GdkVisual *visual = wxTheApp->GetGdkVisual();
 127
 128     int bpp = visual->depth;
 129     if ((bpp == 16) && (visual->red_mask != 0xf800))
 130         bpp = 15;
 131     if (bpp == 15)
 132     {
 133         red = red & 0xf8;
 134         green = green & 0xf8;
 135         blue = blue & 0xf8;
 136     }
 137     else if (bpp == 16)
 138     {
 139         red = red & 0xf8;
 140         green = green & 0xfc;
 141         blue = blue & 0xf8;
 142     }
 143     else if (bpp == 12)
 144     {
 145         red = red & 0xf0;
 146         green = green & 0xf0;
 147         blue = blue & 0xf0;
 148     }
 149
 150     color.red = 0;
 151     color.green = 0;
 152     color.blue = 0;
 153     color.pixel = 0;
 154     gdk_gc_set_foreground( gc, &color );
 155
 156     for (int j = 0; j < image.GetHeight(); j++)
 157     {
 158         int start_x = -1;
 159         int i;
 160         for (i = 0; i < image.GetWidth(); i++)
 161         {
 162             if ((data[index] == red) &&
 163                 (data[index+1] == green) &&
 164                 (data[index+2] == blue))
 165             {
 166                 if (start_x == -1)
 167                 start_x = i;
 168             }
 169             else
 170             {
 171                 if (start_x != -1)
 172                 {
 173                     gdk_draw_line( m_bitmap, gc, start_x, j, i-1, j );
 174                     start_x = -1;
 175                 }
 176             }
 177             index += 3;
 178         }
 179         if (start_x != -1)
 180             gdk_draw_line( m_bitmap, gc, start_x, j, i, j );
 181     }
 182
 183     gdk_gc_unref( gc );
 184
 185     return TRUE;
 186 }
 187
 188 bool wxMask::Create( const wxBitmap& bitmap, int paletteIndex )
 189 {
 190     unsigned char r,g,b;
 191     wxPalette *pal = bitmap.GetPalette();
 192
 193     wxCHECK_MSG( pal, FALSE, wxT("Cannot create mask from bitmap without palette") );
 194
 195     pal->GetRGB(paletteIndex, &r, &g, &b);
 196
 197     return Create(bitmap, wxColour(r, g, b));
 198 }
 199
 200 bool wxMask::Create( const wxBitmap& bitmap )
 201 {
 202     if (m_bitmap)
 203     {
 204         gdk_bitmap_unref( m_bitmap );
 205         m_bitmap = (GdkBitmap*) NULL;
 206     }
 207
 208     if (!bitmap.Ok()) return FALSE;
 209
 210     wxCHECK_MSG( bitmap.GetBitmap(), FALSE, wxT("Cannot create mask from colour bitmap") );
 211
 212     m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, bitmap.GetWidth(), bitmap.GetHeight(), 1 );
 213
 214     if (!m_bitmap) return FALSE;
 215
 216     GdkGC *gc = gdk_gc_new( m_bitmap );
 217
 218     gdk_wx_draw_bitmap( m_bitmap, gc, bitmap.GetBitmap(), 0, 0, 0, 0, bitmap.GetWidth(), bitmap.GetHeight() );
 219
 220     gdk_gc_unref( gc );
 221
 222     return TRUE;
 223 }
 224
 225 GdkBitmap *wxMask::GetBitmap() const
 226 {
 227     return m_bitmap;
 228 }
 229
 230 //-----------------------------------------------------------------------------
 231 // wxBitmap
 232 //-----------------------------------------------------------------------------
 233
 234 class wxBitmapRefData: public wxObjectRefData
 235 {
 236 public:
 237     wxBitmapRefData();
 238     ~wxBitmapRefData();
 239
 240     GdkPixmap      *m_pixmap;
 241     GdkBitmap      *m_bitmap;
 242 #ifdef __WXGTK20__
 243     GdkPixbuf      *m_pixbuf;
 244 #endif
 245     wxMask         *m_mask;
 246     int             m_width;
 247     int             m_height;
 248     int             m_bpp;
 249     wxPalette      *m_palette;
 250 };
 251
 252 wxBitmapRefData::wxBitmapRefData()
 253 {
 254     m_pixmap = (GdkPixmap *) NULL;
 255     m_bitmap = (GdkBitmap *) NULL;
 256 #ifdef __WXGTK20__
 257     m_pixbuf = (GdkPixbuf *) NULL;
 258 #endif
 259     m_mask = (wxMask *) NULL;
 260     m_width = 0;
 261     m_height = 0;
 262     m_bpp = 0;
 263     m_palette = (wxPalette *) NULL;
 264 }
 265
 266 wxBitmapRefData::~wxBitmapRefData()
 267 {
 268     if (m_pixmap)
 269         gdk_pixmap_unref( m_pixmap );
 270     if (m_bitmap)
 271         gdk_bitmap_unref( m_bitmap );
 272 #ifdef __WXGTK20__
 273     if (m_pixbuf)
 274         gdk_pixbuf_unref( m_pixbuf );
 275 #endif
 276     delete m_mask;
 277     delete m_palette;
 278 }
 279
 280 //-----------------------------------------------------------------------------
 281
 282 #define M_BMPDATA ((wxBitmapRefData *)m_refData)
 283
 284 IMPLEMENT_DYNAMIC_CLASS(wxBitmap,wxGDIObject)
 285
 286 wxBitmap::wxBitmap()
 287 {
 288 }
 289
 290 wxBitmap::wxBitmap( int width, int height, int depth )
 291 {
 292     Create( width, height, depth );
 293 }
 294
 295 bool wxBitmap::Create( int width, int height, int depth )
 296 {
 297     UnRef();
 298
 299     if ( width <= 0 || height <= 0 )
 300     {
 301         return false;
 302     }
 303
 304     GdkVisual *visual = wxTheApp->GetGdkVisual();
 305
 306     if (depth == -1)
 307         depth = visual->depth;
 308
 309     wxCHECK_MSG( (depth == visual->depth) || (depth == 1), FALSE,
 310                     wxT("invalid bitmap depth") )
 311
 312     m_refData = new wxBitmapRefData();
 313     M_BMPDATA->m_mask = (wxMask *) NULL;
 314     M_BMPDATA->m_width = width;
 315     M_BMPDATA->m_height = height;
 316     if (depth == 1)
 317     {
 318         M_BMPDATA->m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, width, height, 1 );
 319         M_BMPDATA->m_bpp = 1;
 320     }
 321     else
 322     {
 323         M_BMPDATA->m_pixmap = gdk_pixmap_new( wxGetRootWindow()->window, width, height, depth );
 324         M_BMPDATA->m_bpp = visual->depth;
 325     }
 326
 327     return Ok();
 328 }
 329
 330 bool wxBitmap::CreateFromXpm( const char **bits )
 331 {
 332     UnRef();
 333
 334     wxCHECK_MSG( bits != NULL, FALSE, wxT("invalid bitmap data") )
 335
 336     GdkVisual *visual = wxTheApp->GetGdkVisual();
 337
 338     m_refData = new wxBitmapRefData();
 339
 340     GdkBitmap *mask = (GdkBitmap*) NULL;
 341
 342     M_BMPDATA->m_pixmap = gdk_pixmap_create_from_xpm_d( wxGetRootWindow()->window, &mask, NULL, (gchar **) bits );
 343
 344     wxCHECK_MSG( M_BMPDATA->m_pixmap, FALSE, wxT("couldn't create pixmap") );
 345
 346     if (mask)
 347     {
 348         M_BMPDATA->m_mask = new wxMask();
 349         M_BMPDATA->m_mask->m_bitmap = mask;
 350     }
 351
 352     gdk_window_get_size( M_BMPDATA->m_pixmap, &(M_BMPDATA->m_width), &(M_BMPDATA->m_height) );
 353
 354     M_BMPDATA->m_bpp = visual->depth;  // Can we get a different depth from create_from_xpm_d() ?
 355
 356     return TRUE;
 357 }
 358
 359 wxBitmap wxBitmap::Rescale( int clipx, int clipy, int clipwidth, int clipheight, int newx, int newy )
 360 {
 361     wxCHECK_MSG( Ok(), wxNullBitmap, wxT("invalid bitmap") );
 362
 363     if (newy==M_BMPDATA->m_width && newy==M_BMPDATA->m_height)
 364         return *this;
 365
 366     int width = wxMax(newx, 1);
 367     int height = wxMax(newy, 1);
 368     width = wxMin(width, clipwidth);
 369     height = wxMin(height, clipheight);
 370
 371     wxBitmap bmp;
 372
 373 #ifdef __WXGTK20__
 374     if (HasPixbuf())
 375     {
 376         bmp.SetWidth(width);
 377         bmp.SetHeight(height);
 378         bmp.SetDepth(GetDepth());
 379         bmp.SetPixbuf(gdk_pixbuf_new(GDK_COLORSPACE_RGB,
 380                                      gdk_pixbuf_get_has_alpha(GetPixbuf()),
 381                                      8, width, height));
 382         gdk_pixbuf_scale(GetPixbuf(), bmp.GetPixbuf(),
 383                          0, 0, width, height,
 384                          clipx, clipy,
 385                          (double)newx/GetWidth(), (double)newy/GetHeight(),
 386                          GDK_INTERP_BILINEAR);
 387     }
 388     else
 389 #endif // __WXGTK20__
 390     {
 391         GdkImage *img = (GdkImage*) NULL;
 392         if (GetPixmap())
 393             img = gdk_image_get( GetPixmap(), 0, 0, GetWidth(), GetHeight() );
 394         else if (GetBitmap())
 395             img = gdk_image_get( GetBitmap(), 0, 0, GetWidth(), GetHeight() );
 396         else
 397             wxFAIL_MSG( wxT("Ill-formed bitmap") );
 398
 399         wxCHECK_MSG( img, wxNullBitmap, wxT("couldn't create image") );
 400
 401         int bpp = -1;
 402
 403
 404         GdkGC *gc = NULL;
 405         GdkPixmap *dstpix = NULL;
 406         if (GetPixmap())
 407         {
 408             GdkVisual *visual = gdk_window_get_visual( GetPixmap() );
 409             if (visual == NULL)
 410                 visual = wxTheApp->GetGdkVisual();
 411
 412             bpp = visual->depth;
 413             bmp = wxBitmap(width,height,bpp);
 414             dstpix = bmp.GetPixmap();
 415             gc = gdk_gc_new( dstpix );
 416         }
 417
 418         char *dst = NULL;
 419         long dstbyteperline = 0;
 420
 421         if (GetBitmap())
 422         {
 423             bpp = 1;
 424             dstbyteperline = width/8*M_BMPDATA->m_bpp;
 425             if (width*M_BMPDATA->m_bpp % 8 != 0)
 426                 dstbyteperline++;
 427             dst = (char*) malloc(dstbyteperline*height);
 428         }
 429
 430         // be careful to use the right scaling factor
 431         float scx = (float)M_BMPDATA->m_width/(float)newx;
 432         float scy = (float)M_BMPDATA->m_height/(float)newy;
 433         // prepare accel-tables
 434         int *tablex = (int *)calloc(width,sizeof(int));
 435         int *tabley = (int *)calloc(height,sizeof(int));
 436
 437         // accel table filled with clipped values
 438         for (int x = 0; x < width; x++)
 439             tablex[x] = (int) (scx * (x+clipx));
 440         for (int y = 0; y < height; y++)
 441             tabley[y] = (int) (scy * (y+clipy));
 442
 443         // Main rescaling routine starts here
 444         for (int h = 0; h < height; h++)
 445         {
 446             char outbyte = 0;
 447             int old_x = -1;
 448             guint32 old_pixval = 0;
 449
 450             for (int w = 0; w < width; w++)
 451             {
 452                 guint32 pixval;
 453                 int x = tablex[w];
 454                 if (x == old_x)
 455                     pixval = old_pixval;
 456                 else
 457                 {
 458                     pixval = gdk_image_get_pixel( img, x, tabley[h] );
 459                     old_pixval = pixval;
 460                     old_x = x;
 461                 }
 462
 463                 if (bpp == 1)
 464                 {
 465                     if (!pixval)
 466                     {
 467                         char bit=1;
 468                         char shift = bit << w % 8;
 469                         outbyte |= shift;
 470                     }
 471
 472                     if ((w+1)%8==0)
 473                     {
 474                         dst[h*dstbyteperline+w/8] = outbyte;
 475                         outbyte = 0;
 476                     }
 477                 }
 478                 else
 479                 {
 480                     GdkColor col;
 481                     col.pixel = pixval;
 482                     gdk_gc_set_foreground( gc, &col );
 483                     gdk_draw_point( dstpix, gc, w, h);
 484                 }
 485             }
 486
 487             // do not forget the last byte
 488             if ((bpp == 1) && (width % 8 != 0))
 489                 dst[h*dstbyteperline+width/8] = outbyte;
 490         }
 491
 492         gdk_image_destroy( img );
 493         if (gc) gdk_gc_unref( gc );
 494
 495         if (bpp == 1)
 496         {
 497             bmp = wxBitmap( (const char *)dst, width, height, 1 );
 498             free( dst );
 499         }
 500
 501         if (GetMask())
 502         {
 503             dstbyteperline = width/8;
 504             if (width % 8 != 0)
 505                 dstbyteperline++;
 506             dst = (char*) malloc(dstbyteperline*height);
 507             img = gdk_image_get( GetMask()->GetBitmap(), 0, 0, GetWidth(), GetHeight() );
 508
 509             for (int h = 0; h < height; h++)
 510             {
 511                 char outbyte = 0;
 512                 int old_x = -1;
 513                 guint32 old_pixval = 0;
 514
 515                 for (int w = 0; w < width; w++)
 516                 {
 517                     guint32 pixval;
 518                     int x = tablex[w];
 519                     if (x == old_x)
 520                         pixval = old_pixval;
 521                     else
 522                     {
 523                         pixval = gdk_image_get_pixel( img, x, tabley[h] );
 524                         old_pixval = pixval;
 525                         old_x = x;
 526                     }
 527
 528                     if (pixval)
 529                     {
 530                         char bit=1;
 531                         char shift = bit << w % 8;
 532                         outbyte |= shift;
 533                     }
 534
 535                     if ((w+1)%8 == 0)
 536                     {
 537                         dst[h*dstbyteperline+w/8] = outbyte;
 538                         outbyte = 0;
 539                     }
 540                 }
 541
 542                 // do not forget the last byte
 543                 if (width % 8 != 0)
 544                     dst[h*dstbyteperline+width/8] = outbyte;
 545             }
 546             wxMask* mask = new wxMask;
 547             mask->m_bitmap = gdk_bitmap_create_from_data( wxGetRootWindow()->window, (gchar *) dst, width, height );
 548             bmp.SetMask(mask);
 549
 550             free( dst );
 551             gdk_image_destroy( img );
 552         }
 553
 554         free( tablex );
 555         free( tabley );
 556     }
 557
 558     return bmp;
 559 }
 560
 561 bool wxBitmap::CreateFromImage(const wxImage& image, int depth)
 562 {
 563     UnRef();
 564
 565     wxCHECK_MSG( image.Ok(), FALSE, wxT("invalid image") )
 566     wxCHECK_MSG( depth == -1 || depth == 1, FALSE, wxT("invalid bitmap depth") )
 567
 568     if (image.GetWidth() <= 0 || image.GetHeight() <= 0)
 569         return false;
 570
 571     m_refData = new wxBitmapRefData();
 572
 573     if (depth == 1)
 574     {
 575         return CreateFromImageAsBitmap(image);
 576     }
 577     else
 578     {
 579 #ifdef __WXGTK20__
 580         if (image.HasAlpha())
 581             return CreateFromImageAsPixbuf(image);
 582 #endif
 583         return CreateFromImageAsPixmap(image);
 584     }
 585 }
 586
 587 // conversion to mono bitmap:
 588 bool wxBitmap::CreateFromImageAsBitmap(const wxImage& img)
 589 {
 590     // convert alpha channel to mask, if it is present:
 591     wxImage image(img);
 592     image.ConvertAlphaToMask();
 593
 594     int width = image.GetWidth();
 595     int height = image.GetHeight();
 596
 597     SetHeight( height );
 598     SetWidth( width );
 599
 600     SetBitmap( gdk_pixmap_new( wxGetRootWindow()->window, width, height, 1 ) );
 601
 602     SetDepth( 1 );
 603
 604     GdkVisual *visual = wxTheApp->GetGdkVisual();
 605
 606     // Create picture image
 607
 608     unsigned char *data_data = (unsigned char*)malloc( ((width >> 3)+8) * height );
 609
 610     GdkImage *data_image =
 611         gdk_image_new_bitmap( visual, data_data, width, height );
 612
 613     // Create mask image
 614
 615     GdkImage *mask_image = (GdkImage*) NULL;
 616
 617     if (image.HasMask())
 618     {
 619         unsigned char *mask_data = (unsigned char*)malloc( ((width >> 3)+8) * height );
 620
 621         mask_image =  gdk_image_new_bitmap( visual, mask_data, width, height );
 622
 623         wxMask *mask = new wxMask();
 624         mask->m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, width, height, 1 );
 625
 626         SetMask( mask );
 627     }
 628
 629     int r_mask = image.GetMaskRed();
 630     int g_mask = image.GetMaskGreen();
 631     int b_mask = image.GetMaskBlue();
 632
 633     unsigned char* data = image.GetData();
 634
 635     int index = 0;
 636     for (int y = 0; y < height; y++)
 637     {
 638         for (int x = 0; x < width; x++)
 639         {
 640             int r = data[index];
 641             index++;
 642             int g = data[index];
 643             index++;
 644             int b = data[index];
 645             index++;
 646
 647             if (image.HasMask())
 648             {
 649                 if ((r == r_mask) && (b == b_mask) && (g == g_mask))
 650                     gdk_image_put_pixel( mask_image, x, y, 1 );
 651                 else
 652                     gdk_image_put_pixel( mask_image, x, y, 0 );
 653             }
 654
 655             if ((r == 255) && (b == 255) && (g == 255))
 656                 gdk_image_put_pixel( data_image, x, y, 1 );
 657             else
 658                 gdk_image_put_pixel( data_image, x, y, 0 );
 659
 660         } // for
 661     }  // for
 662
 663     // Blit picture
 664
 665     GdkGC *data_gc = gdk_gc_new( GetBitmap() );
 666
 667     gdk_draw_image( GetBitmap(), data_gc, data_image, 0, 0, 0, 0, width, height );
 668
 669     gdk_image_destroy( data_image );
 670     gdk_gc_unref( data_gc );
 671
 672     // Blit mask
 673
 674     if (image.HasMask())
 675     {
 676         GdkGC *mask_gc = gdk_gc_new( GetMask()->GetBitmap() );
 677
 678         gdk_draw_image( GetMask()->GetBitmap(), mask_gc, mask_image, 0, 0, 0, 0, width, height );
 679
 680         gdk_image_destroy( mask_image );
 681         gdk_gc_unref( mask_gc );
 682     }
 683
 684     return true;
 685 }
 686
 687 // conversion to colour bitmap:
 688 bool wxBitmap::CreateFromImageAsPixmap(const wxImage& img)
 689 {
 690     // convert alpha channel to mask, if it is present:
 691     wxImage image(img);
 692     image.ConvertAlphaToMask();
 693
 694     int width = image.GetWidth();
 695     int height = image.GetHeight();
 696
 697     SetHeight( height );
 698     SetWidth( width );
 699
 700     SetPixmap( gdk_pixmap_new( wxGetRootWindow()->window, width, height, -1 ) );
 701
 702     GdkVisual *visual = wxTheApp->GetGdkVisual();
 703
 704     int bpp = visual->depth;
 705
 706     SetDepth( bpp );
 707
 708     if ((bpp == 16) && (visual->red_mask != 0xf800))
 709         bpp = 15;
 710     else if (bpp < 8)
 711         bpp = 8;
 712
 713     // We handle 8-bit bitmaps ourselves using the colour cube, 12-bit
 714     // visuals are not supported by GDK so we do these ourselves, too.
 715     // 15-bit and 16-bit should actually work and 24-bit certainly does.
 716 #ifdef __sgi
 717     if (!image.HasMask() && (bpp > 16))
 718 #else
 719     if (!image.HasMask() && (bpp > 12))
 720 #endif
 721     {
 722         static bool s_hasInitialized = FALSE;
 723
 724         if (!s_hasInitialized)
 725         {
 726             gdk_rgb_init();
 727             s_hasInitialized = TRUE;
 728         }
 729
 730         GdkGC *gc = gdk_gc_new( GetPixmap() );
 731
 732         gdk_draw_rgb_image( GetPixmap(),
 733                             gc,
 734                             0, 0,
 735                             width, height,
 736                             GDK_RGB_DITHER_NONE,
 737                             image.GetData(),
 738                             width*3 );
 739
 740         gdk_gc_unref( gc );
 741         return TRUE;
 742     }
 743
 744     // Create picture image
 745
 746     GdkImage *data_image =
 747         gdk_image_new( GDK_IMAGE_FASTEST, visual, width, height );
 748
 749     // Create mask image
 750
 751     GdkImage *mask_image = (GdkImage*) NULL;
 752
 753     if (image.HasMask())
 754     {
 755         unsigned char *mask_data = (unsigned char*)malloc( ((width >> 3)+8) * height );
 756
 757         mask_image =  gdk_image_new_bitmap( visual, mask_data, width, height );
 758
 759         wxMask *mask = new wxMask();
 760         mask->m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, width, height, 1 );
 761
 762         SetMask( mask );
 763     }
 764
 765     // Render
 766
 767     enum byte_order { RGB, RBG, BRG, BGR, GRB, GBR };
 768     byte_order b_o = RGB;
 769
 770     if (bpp > 8)
 771     {
 772         if ((visual->red_mask > visual->green_mask) && (visual->green_mask > visual->blue_mask))      b_o = RGB;
 773         else if ((visual->red_mask > visual->blue_mask) && (visual->blue_mask > visual->green_mask))  b_o = RBG;
 774         else if ((visual->blue_mask > visual->red_mask) && (visual->red_mask > visual->green_mask))   b_o = BRG;
 775         else if ((visual->blue_mask > visual->green_mask) && (visual->green_mask > visual->red_mask)) b_o = BGR;
 776         else if ((visual->green_mask > visual->red_mask) && (visual->red_mask > visual->blue_mask))   b_o = GRB;
 777         else if ((visual->green_mask > visual->blue_mask) && (visual->blue_mask > visual->red_mask))  b_o = GBR;
 778     }
 779
 780     int r_mask = image.GetMaskRed();
 781     int g_mask = image.GetMaskGreen();
 782     int b_mask = image.GetMaskBlue();
 783
 784     unsigned char* data = image.GetData();
 785
 786     int index = 0;
 787     for (int y = 0; y < height; y++)
 788     {
 789         for (int x = 0; x < width; x++)
 790         {
 791             int r = data[index];
 792             index++;
 793             int g = data[index];
 794             index++;
 795             int b = data[index];
 796             index++;
 797
 798             if (image.HasMask())
 799             {
 800                 if ((r == r_mask) && (b == b_mask) && (g == g_mask))
 801                     gdk_image_put_pixel( mask_image, x, y, 1 );
 802                 else
 803                     gdk_image_put_pixel( mask_image, x, y, 0 );
 804             }
 805
 806             switch (bpp)
 807             {
 808                 case 8:
 809                 {
 810                     int pixel = -1;
 811                     if (wxTheApp->m_colorCube)
 812                     {
 813                         pixel = wxTheApp->m_colorCube[ ((r & 0xf8) << 7) + ((g & 0xf8) << 2) + ((b & 0xf8) >> 3) ];
 814                     }
 815                     else
 816                     {
 817                         GdkColormap *cmap = gtk_widget_get_default_colormap();
 818                         GdkColor *colors = cmap->colors;
 819                         int max = 3 * (65536);
 820
 821                         for (int i = 0; i < cmap->size; i++)
 822                         {
 823                             int rdiff = (r << 8) - colors[i].red;
 824                             int gdiff = (g << 8) - colors[i].green;
 825                             int bdiff = (b << 8) - colors[i].blue;
 826                             int sum = ABS (rdiff) + ABS (gdiff) + ABS (bdiff);
 827                             if (sum < max) { pixel = i; max = sum; }
 828                         }
 829                     }
 830
 831                     gdk_image_put_pixel( data_image, x, y, pixel );
 832
 833                     break;
 834                 }
 835                 case 12:  // SGI only
 836                 {
 837                     guint32 pixel = 0;
 838                     switch (b_o)
 839                     {
 840                         case RGB: pixel = ((r & 0xf0) << 4) | (g & 0xf0) | ((b & 0xf0) >> 4); break;
 841                         case RBG: pixel = ((r & 0xf0) << 4) | (b & 0xf0) | ((g & 0xf0) >> 4); break;
 842                         case GRB: pixel = ((g & 0xf0) << 4) | (r & 0xf0) | ((b & 0xf0) >> 4); break;
 843                         case GBR: pixel = ((g & 0xf0) << 4) | (b & 0xf0) | ((r & 0xf0) >> 4); break;
 844                         case BRG: pixel = ((b & 0xf0) << 4) | (r & 0xf0) | ((g & 0xf0) >> 4); break;
 845                         case BGR: pixel = ((b & 0xf0) << 4) | (g & 0xf0) | ((r & 0xf0) >> 4); break;
 846                     }
 847                     gdk_image_put_pixel( data_image, x, y, pixel );
 848                     break;
 849                 }
 850                 case 15:
 851                 {
 852                     guint32 pixel = 0;
 853                     switch (b_o)
 854                     {
 855                         case RGB: pixel = ((r & 0xf8) << 7) | ((g & 0xf8) << 2) | ((b & 0xf8) >> 3); break;
 856                         case RBG: pixel = ((r & 0xf8) << 7) | ((b & 0xf8) << 2) | ((g & 0xf8) >> 3); break;
 857                         case GRB: pixel = ((g & 0xf8) << 7) | ((r & 0xf8) << 2) | ((b & 0xf8) >> 3); break;
 858                         case GBR: pixel = ((g & 0xf8) << 7) | ((b & 0xf8) << 2) | ((r & 0xf8) >> 3); break;
 859                         case BRG: pixel = ((b & 0xf8) << 7) | ((r & 0xf8) << 2) | ((g & 0xf8) >> 3); break;
 860                         case BGR: pixel = ((b & 0xf8) << 7) | ((g & 0xf8) << 2) | ((r & 0xf8) >> 3); break;
 861                     }
 862                     gdk_image_put_pixel( data_image, x, y, pixel );
 863                     break;
 864                 }
 865                 case 16:
 866                 {
 867                     // I actually don't know if for 16-bit displays, it is alway the green
 868                     // component or the second component which has 6 bits.
 869                     guint32 pixel = 0;
 870                     switch (b_o)
 871                     {
 872                         case RGB: pixel = ((r & 0xf8) << 8) | ((g & 0xfc) << 3) | ((b & 0xf8) >> 3); break;
 873                         case RBG: pixel = ((r & 0xf8) << 8) | ((b & 0xfc) << 3) | ((g & 0xf8) >> 3); break;
 874                         case GRB: pixel = ((g & 0xf8) << 8) | ((r & 0xfc) << 3) | ((b & 0xf8) >> 3); break;
 875                         case GBR: pixel = ((g & 0xf8) << 8) | ((b & 0xfc) << 3) | ((r & 0xf8) >> 3); break;
 876                         case BRG: pixel = ((b & 0xf8) << 8) | ((r & 0xfc) << 3) | ((g & 0xf8) >> 3); break;
 877                         case BGR: pixel = ((b & 0xf8) << 8) | ((g & 0xfc) << 3) | ((r & 0xf8) >> 3); break;
 878                     }
 879                     gdk_image_put_pixel( data_image, x, y, pixel );
 880                     break;
 881                 }
 882                 case 32:
 883                 case 24:
 884                 {
 885                     guint32 pixel = 0;
 886                     switch (b_o)
 887                     {
 888                         case RGB: pixel = (r << 16) | (g << 8) | b; break;
 889                         case RBG: pixel = (r << 16) | (b << 8) | g; break;
 890                         case BRG: pixel = (b << 16) | (r << 8) | g; break;
 891                         case BGR: pixel = (b << 16) | (g << 8) | r; break;
 892                         case GRB: pixel = (g << 16) | (r << 8) | b; break;
 893                         case GBR: pixel = (g << 16) | (b << 8) | r; break;
 894                     }
 895                     gdk_image_put_pixel( data_image, x, y, pixel );
 896                 }
 897                 default: break;
 898             }
 899         } // for
 900     }  // for
 901
 902     // Blit picture
 903
 904     GdkGC *data_gc = gdk_gc_new( GetPixmap() );
 905
 906     gdk_draw_image( GetPixmap(), data_gc, data_image, 0, 0, 0, 0, width, height );
 907
 908     gdk_image_destroy( data_image );
 909     gdk_gc_unref( data_gc );
 910
 911     // Blit mask
 912
 913     if (image.HasMask())
 914     {
 915         GdkGC *mask_gc = gdk_gc_new( GetMask()->GetBitmap() );
 916
 917         gdk_draw_image( GetMask()->GetBitmap(), mask_gc, mask_image, 0, 0, 0, 0, width, height );
 918
 919         gdk_image_destroy( mask_image );
 920         gdk_gc_unref( mask_gc );
 921     }
 922
 923     return true;
 924 }
 925
 926 #ifdef __WXGTK20__
 927 bool wxBitmap::CreateFromImageAsPixbuf(const wxImage& image)
 928 {
 929     int width = image.GetWidth();
 930     int height = image.GetHeight();
 931
 932     GdkPixbuf *pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB,
 933                                        image.HasAlpha(),
 934                                        8 /* bits per sample */,
 935                                        width, height);
 936     if (!pixbuf)
 937         return false;
 938
 939     wxASSERT( image.HasAlpha() ); // for now
 940     wxASSERT( gdk_pixbuf_get_n_channels(pixbuf) == 4 );
 941     wxASSERT( gdk_pixbuf_get_width(pixbuf) == width );
 942     wxASSERT( gdk_pixbuf_get_height(pixbuf) == height );
 943
 944     M_BMPDATA->m_pixbuf = pixbuf;
 945     SetHeight(height);
 946     SetWidth(width);
 947     SetDepth(wxTheApp->GetGdkVisual()->depth);
 948
 949     // Copy the data:
 950     unsigned char *in = image.GetData();
 951     unsigned char *out = gdk_pixbuf_get_pixels(pixbuf);
 952     unsigned char *alpha = image.GetAlpha();
 953
 954     int rowinc = gdk_pixbuf_get_rowstride(pixbuf) - 4 * width;
 955
 956     for (int y = 0; y < height; y++, out += rowinc)
 957     {
 958         for (int x = 0; x < width; x++, alpha++, out += 4, in += 3)
 959         {
 960             out[0] = in[0];
 961             out[1] = in[1];
 962             out[2] = in[2];
 963             out[3] = *alpha;
 964         }
 965     }
 966
 967     return true;
 968 }
 969 #endif // __WXGTK20__
 970
 971 wxImage wxBitmap::ConvertToImage() const
 972 {
 973     wxImage image;
 974
 975     wxCHECK_MSG( Ok(), wxNullImage, wxT("invalid bitmap") );
 976
 977     image.Create(GetWidth(), GetHeight());
 978     unsigned char *data = image.GetData();
 979
 980     if (!data)
 981     {
 982         wxFAIL_MSG( wxT("couldn't create image") );
 983         return wxNullImage;
 984     }
 985
 986 #ifdef __WXGTK20__
 987     if (HasPixbuf())
 988     {
 989         GdkPixbuf *pixbuf = GetPixbuf();
 990         wxASSERT( gdk_pixbuf_get_has_alpha(pixbuf) );
 991
 992         int w = GetWidth();
 993         int h = GetHeight();
 994
 995         image.SetAlpha();
 996
 997         unsigned char *alpha = image.GetAlpha();
 998         unsigned char *in = gdk_pixbuf_get_pixels(pixbuf);
 999         unsigned char *out = data;
1000         int rowinc = gdk_pixbuf_get_rowstride(pixbuf) - 4 * w;
1001
1002         for (int y = 0; y < h; y++, in += rowinc)
1003         {
1004             for (int x = 0; x < w; x++, in += 4, out += 3, alpha++)
1005             {
1006                 out[0] = in[0];
1007                 out[1] = in[1];
1008                 out[2] = in[2];
1009                 *alpha = in[3];
1010             }
1011         }
1012     }
1013     else
1014 #endif // __WXGTK20__
1015     {
1016         // the colour used as transparent one in wxImage and the one it is
1017         // replaced with when it really occurs in the bitmap
1018         static const int MASK_RED = 1;
1019         static const int MASK_GREEN = 2;
1020         static const int MASK_BLUE = 3;
1021         static const int MASK_BLUE_REPLACEMENT = 2;
1022
1023         GdkImage *gdk_image = (GdkImage*) NULL;
1024
1025         if (HasPixmap())
1026         {
1027             gdk_image = gdk_image_get( GetPixmap(),
1028                                        0, 0,
1029                                        GetWidth(), GetHeight() );
1030         }
1031         else if (GetBitmap())
1032         {
1033             gdk_image = gdk_image_get( GetBitmap(),
1034                                        0, 0,
1035                                        GetWidth(), GetHeight() );
1036         }
1037         else
1038         {
1039             wxFAIL_MSG( wxT("Ill-formed bitmap") );
1040         }
1041
1042         wxCHECK_MSG( gdk_image, wxNullImage, wxT("couldn't create image") );
1043
1044         GdkImage *gdk_image_mask = (GdkImage*) NULL;
1045         if (GetMask())
1046         {
1047             gdk_image_mask = gdk_image_get( GetMask()->GetBitmap(),
1048                                             0, 0,
1049                                             GetWidth(), GetHeight() );
1050
1051             image.SetMaskColour( MASK_RED, MASK_GREEN, MASK_BLUE );
1052         }
1053
1054         int bpp = -1;
1055         int red_shift_right = 0;
1056         int green_shift_right = 0;
1057         int blue_shift_right = 0;
1058         int red_shift_left = 0;
1059         int green_shift_left = 0;
1060         int blue_shift_left = 0;
1061         bool use_shift = FALSE;
1062
1063         if (GetPixmap())
1064         {
1065             GdkVisual *visual = gdk_window_get_visual( GetPixmap() );
1066             if (visual == NULL)
1067                 visual = wxTheApp->GetGdkVisual();
1068
1069             bpp = visual->depth;
1070             if (bpp == 16)
1071                 bpp = visual->red_prec + visual->green_prec + visual->blue_prec;
1072             red_shift_right = visual->red_shift;
1073             red_shift_left = 8-visual->red_prec;
1074             green_shift_right = visual->green_shift;
1075             green_shift_left = 8-visual->green_prec;
1076             blue_shift_right = visual->blue_shift;
1077             blue_shift_left = 8-visual->blue_prec;
1078
1079             use_shift = (visual->type == GDK_VISUAL_TRUE_COLOR) || (visual->type == GDK_VISUAL_DIRECT_COLOR);
1080         }
1081         if (GetBitmap())
1082         {
1083             bpp = 1;
1084         }
1085
1086
1087         GdkColormap *cmap = gtk_widget_get_default_colormap();
1088
1089         long pos = 0;
1090         for (int j = 0; j < GetHeight(); j++)
1091         {
1092             for (int i = 0; i < GetWidth(); i++)
1093             {
1094                 wxUint32 pixel = gdk_image_get_pixel( gdk_image, i, j );
1095                 if (bpp == 1)
1096                 {
1097                     if (pixel == 0)
1098                     {
1099                         data[pos]   = 0;
1100                         data[pos+1] = 0;
1101                         data[pos+2] = 0;
1102                     }
1103                     else
1104                     {
1105                         data[pos]   = 255;
1106                         data[pos+1] = 255;
1107                         data[pos+2] = 255;
1108                     }
1109                 }
1110                 else if (use_shift)
1111                 {
1112                     data[pos] =   (pixel >> red_shift_right)   << red_shift_left;
1113                     data[pos+1] = (pixel >> green_shift_right) << green_shift_left;
1114                     data[pos+2] = (pixel >> blue_shift_right)  << blue_shift_left;
1115                 }
1116                 else if (cmap->colors)
1117                 {
1118                     data[pos] =   cmap->colors[pixel].red   >> 8;
1119                     data[pos+1] = cmap->colors[pixel].green >> 8;
1120                     data[pos+2] = cmap->colors[pixel].blue  >> 8;
1121                 }
1122                 else
1123                 {
1124                     wxFAIL_MSG( wxT("Image conversion failed. Unknown visual type.") );
1125                 }
1126
1127                 if (gdk_image_mask)
1128                 {
1129                     int mask_pixel = gdk_image_get_pixel( gdk_image_mask, i, j );
1130                     if (mask_pixel == 0)
1131                     {
1132                         data[pos] = MASK_RED;
1133                         data[pos+1] = MASK_GREEN;
1134                         data[pos+2] = MASK_BLUE;
1135                     }
1136                     else if ( data[pos] == MASK_RED &&
1137                                 data[pos+1] == MASK_GREEN &&
1138                                     data[pos+2] == MASK_BLUE )
1139                     {
1140                         data[pos+2] = MASK_BLUE_REPLACEMENT;
1141                     }
1142                 }
1143
1144                 pos += 3;
1145             }
1146         }
1147
1148         gdk_image_destroy( gdk_image );
1149         if (gdk_image_mask) gdk_image_destroy( gdk_image_mask );
1150     }
1151
1152     return image;
1153 }
1154
1155 wxBitmap::wxBitmap( const wxBitmap& bmp )
1156         : wxBitmapBase()
1157 {
1158     Ref( bmp );
1159 }
1160
1161 wxBitmap::wxBitmap( const wxString &filename, wxBitmapType type )
1162 {
1163     LoadFile( filename, type );
1164 }
1165
1166 wxBitmap::wxBitmap( const char bits[], int width, int height, int WXUNUSED(depth))
1167 {
1168     if ( width > 0 && height > 0 )
1169     {
1170         m_refData = new wxBitmapRefData();
1171
1172         M_BMPDATA->m_mask = (wxMask *) NULL;
1173         M_BMPDATA->m_bitmap = gdk_bitmap_create_from_data
1174                               (
1175                                 wxGetRootWindow()->window,
1176                                 (gchar *) bits,
1177                                 width,
1178                                 height
1179                               );
1180         M_BMPDATA->m_width = width;
1181         M_BMPDATA->m_height = height;
1182         M_BMPDATA->m_bpp = 1;
1183
1184         wxASSERT_MSG( M_BMPDATA->m_bitmap, wxT("couldn't create bitmap") );
1185     }
1186 }
1187
1188 wxBitmap::~wxBitmap()
1189 {
1190 }
1191
1192 wxBitmap& wxBitmap::operator = ( const wxBitmap& bmp )
1193 {
1194     if ( m_refData != bmp.m_refData )
1195         Ref( bmp );
1196
1197     return *this;
1198 }
1199
1200 bool wxBitmap::operator == ( const wxBitmap& bmp ) const
1201 {
1202     return m_refData == bmp.m_refData;
1203 }
1204
1205 bool wxBitmap::operator != ( const wxBitmap& bmp ) const
1206 {
1207     return m_refData != bmp.m_refData;
1208 }
1209
1210 bool wxBitmap::Ok() const
1211 {
1212     return (m_refData != NULL) &&
1213            (
1214 #ifdef __WXGTK20__
1215               M_BMPDATA->m_pixbuf ||
1216 #endif
1217               M_BMPDATA->m_bitmap || M_BMPDATA->m_pixmap
1218            );
1219 }
1220
1221 int wxBitmap::GetHeight() const
1222 {
1223     wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1224
1225     return M_BMPDATA->m_height;
1226 }
1227
1228 int wxBitmap::GetWidth() const
1229 {
1230     wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1231
1232     return M_BMPDATA->m_width;
1233 }
1234
1235 int wxBitmap::GetDepth() const
1236 {
1237     wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1238
1239     return M_BMPDATA->m_bpp;
1240 }
1241
1242 wxMask *wxBitmap::GetMask() const
1243 {
1244     wxCHECK_MSG( Ok(), (wxMask *) NULL, wxT("invalid bitmap") );
1245
1246     return M_BMPDATA->m_mask;
1247 }
1248
1249 void wxBitmap::SetMask( wxMask *mask )
1250 {
1251     wxCHECK_RET( Ok(), wxT("invalid bitmap") );
1252
1253     if (M_BMPDATA->m_mask) delete M_BMPDATA->m_mask;
1254
1255     M_BMPDATA->m_mask = mask;
1256 }
1257
1258 bool wxBitmap::CopyFromIcon(const wxIcon& icon)
1259 {
1260     *this = icon;
1261     return TRUE;
1262 }
1263
1264 wxBitmap wxBitmap::GetSubBitmap( const wxRect& rect) const
1265 {
1266     wxCHECK_MSG( Ok() &&
1267                  (rect.x >= 0) && (rect.y >= 0) &&
1268                  (rect.x+rect.width <= M_BMPDATA->m_width) && (rect.y+rect.height <= M_BMPDATA->m_height),
1269                  wxNullBitmap, wxT("invalid bitmap or bitmap region") );
1270
1271     wxBitmap ret( rect.width, rect.height, M_BMPDATA->m_bpp );
1272     wxASSERT_MSG( ret.Ok(), wxT("GetSubBitmap error") );
1273
1274 #ifdef __WXGTK20__
1275     if (HasPixbuf())
1276     {
1277         GdkPixbuf *pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB,
1278                                            gdk_pixbuf_get_has_alpha(GetPixbuf()),
1279                                            8, GetWidth(), GetHeight());
1280         ret.SetPixbuf(pixbuf);
1281         gdk_pixbuf_copy_area(GetPixbuf(),
1282                              rect.x, rect.y, rect.width, rect.height,
1283                              pixbuf, 0, 0);
1284     }
1285     else
1286 #endif // __WXGTK20__
1287     {
1288         if (ret.GetPixmap())
1289         {
1290             GdkGC *gc = gdk_gc_new( ret.GetPixmap() );
1291             gdk_draw_pixmap( ret.GetPixmap(), gc, GetPixmap(), rect.x, rect.y, 0, 0, rect.width, rect.height );
1292             gdk_gc_destroy( gc );
1293         }
1294         else
1295         {
1296             GdkGC *gc = gdk_gc_new( ret.GetBitmap() );
1297             GdkColor col;
1298             col.pixel = 0xFFFFFF;
1299             gdk_gc_set_foreground( gc, &col );
1300             col.pixel = 0;
1301             gdk_gc_set_background( gc, &col );
1302             gdk_wx_draw_bitmap( ret.GetBitmap(), gc, GetBitmap(), rect.x, rect.y, 0, 0, rect.width, rect.height );
1303             gdk_gc_destroy( gc );
1304         }
1305     }
1306
1307     if (GetMask())
1308     {
1309         wxMask *mask = new wxMask;
1310         mask->m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, rect.width, rect.height, 1 );
1311
1312         GdkGC *gc = gdk_gc_new( mask->m_bitmap );
1313         GdkColor col;
1314         col.pixel = 0xFFFFFF;
1315         gdk_gc_set_foreground( gc, &col );
1316         col.pixel = 0;
1317         gdk_gc_set_background( gc, &col );
1318         gdk_wx_draw_bitmap( mask->m_bitmap, gc, M_BMPDATA->m_mask->m_bitmap, rect.x, rect.y, 0, 0, rect.width, rect.height );
1319         gdk_gc_destroy( gc );
1320
1321         ret.SetMask( mask );
1322     }
1323
1324     return ret;
1325 }
1326
1327 bool wxBitmap::SaveFile( const wxString &name, wxBitmapType type, const wxPalette *WXUNUSED(palette) ) const
1328 {
1329     wxCHECK_MSG( Ok(), FALSE, wxT("invalid bitmap") );
1330
1331     // Try to save the bitmap via wxImage handlers:
1332     {
1333         wxImage image = ConvertToImage();
1334         if (image.Ok()) return image.SaveFile( name, type );
1335     }
1336
1337     return FALSE;
1338 }
1339
1340 bool wxBitmap::LoadFile( const wxString &name, wxBitmapType type )
1341 {
1342     UnRef();
1343
1344     if (!wxFileExists(name))
1345         return FALSE;
1346
1347     GdkVisual *visual = wxTheApp->GetGdkVisual();
1348
1349     if (type == wxBITMAP_TYPE_XPM)
1350     {
1351         m_refData = new wxBitmapRefData();
1352
1353         GdkBitmap *mask = (GdkBitmap*) NULL;
1354
1355         M_BMPDATA->m_pixmap = gdk_pixmap_create_from_xpm
1356                               (
1357                                 wxGetRootWindow()->window,
1358                                 &mask,
1359                                 NULL,
1360                                 name.fn_str()
1361                               );
1362
1363         if (mask)
1364         {
1365            M_BMPDATA->m_mask = new wxMask();
1366            M_BMPDATA->m_mask->m_bitmap = mask;
1367         }
1368
1369         gdk_window_get_size( M_BMPDATA->m_pixmap, &(M_BMPDATA->m_width), &(M_BMPDATA->m_height) );
1370
1371         M_BMPDATA->m_bpp = visual->depth;
1372     }
1373     else // try if wxImage can load it
1374     {
1375         wxImage image;
1376         if ( !image.LoadFile( name, type ) || !image.Ok() )
1377             return FALSE;
1378
1379         *this = wxBitmap(image);
1380     }
1381
1382     return TRUE;
1383 }
1384
1385 wxPalette *wxBitmap::GetPalette() const
1386 {
1387     if (!Ok())
1388         return (wxPalette *) NULL;
1389
1390     return M_BMPDATA->m_palette;
1391 }
1392
1393 void wxBitmap::SetPalette(const wxPalette& WXUNUSED(palette))
1394 {
1395     // TODO
1396 }
1397
1398 void wxBitmap::SetHeight( int height )
1399 {
1400     if (!m_refData)
1401         m_refData = new wxBitmapRefData();
1402
1403     M_BMPDATA->m_height = height;
1404 }
1405
1406 void wxBitmap::SetWidth( int width )
1407 {
1408     if (!m_refData)
1409         m_refData = new wxBitmapRefData();
1410
1411     M_BMPDATA->m_width = width;
1412 }
1413
1414 void wxBitmap::SetDepth( int depth )
1415 {
1416     if (!m_refData)
1417         m_refData = new wxBitmapRefData();
1418
1419     M_BMPDATA->m_bpp = depth;
1420 }
1421
1422 void wxBitmap::SetPixmap( GdkPixmap *pixmap )
1423 {
1424     if (!m_refData)
1425         m_refData = new wxBitmapRefData();
1426
1427     M_BMPDATA->m_pixmap = pixmap;
1428 #ifdef __WXGTK20__
1429     PurgeOtherRepresentations(Pixmap);
1430 #endif
1431 }
1432
1433 void wxBitmap::SetBitmap( GdkPixmap *bitmap )
1434 {
1435     if (!m_refData)
1436         m_refData = new wxBitmapRefData();
1437
1438     M_BMPDATA->m_bitmap = bitmap;
1439 #ifdef __WXGTK20__
1440     PurgeOtherRepresentations(Pixmap);
1441 #endif
1442 }
1443
1444 GdkPixmap *wxBitmap::GetPixmap() const
1445 {
1446     wxCHECK_MSG( Ok(), (GdkPixmap *) NULL, wxT("invalid bitmap") );
1447
1448 #ifdef __WXGTK20__
1449     // create the pixmap on the fly if we use Pixbuf representation:
1450     if (HasPixbuf() && !HasPixmap())
1451     {
1452         delete M_BMPDATA->m_mask;
1453         M_BMPDATA->m_mask = new wxMask();
1454         gdk_pixbuf_render_pixmap_and_mask(M_BMPDATA->m_pixbuf,
1455                                           &M_BMPDATA->m_pixmap,
1456                                           &M_BMPDATA->m_mask->m_bitmap,
1457                                           128 /*threshold*/);
1458     }
1459 #endif // __WXGTK20__
1460
1461     return M_BMPDATA->m_pixmap;
1462 }
1463
1464 bool wxBitmap::HasPixmap() const
1465 {
1466     wxCHECK_MSG( Ok(), false, wxT("invalid bitmap") );
1467
1468     return M_BMPDATA->m_pixmap != NULL;
1469 }
1470
1471 GdkBitmap *wxBitmap::GetBitmap() const
1472 {
1473     wxCHECK_MSG( Ok(), (GdkBitmap *) NULL, wxT("invalid bitmap") );
1474
1475     return M_BMPDATA->m_bitmap;
1476 }
1477
1478 #ifdef __WXGTK20__
1479 GdkPixbuf *wxBitmap::GetPixbuf() const
1480 {
1481     wxCHECK_MSG( Ok(), NULL, wxT("invalid bitmap") );
1482
1483     if (HasPixmap() && !HasPixbuf())
1484     {
1485         int width = GetWidth();
1486         int height = GetHeight();
1487
1488         GdkPixbuf *pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB,
1489                                            GetMask() != NULL,
1490                                            8, width, height);
1491         M_BMPDATA->m_pixbuf =
1492             gdk_pixbuf_get_from_drawable(pixbuf, M_BMPDATA->m_pixmap, NULL,
1493                                          0, 0, 0, 0, width, height);
1494
1495         // apply the mask to created pixbuf:
1496         if (M_BMPDATA->m_pixbuf && M_BMPDATA->m_mask)
1497         {
1498             GdkPixbuf *pmask =
1499                 gdk_pixbuf_get_from_drawable(NULL,
1500                                              M_BMPDATA->m_mask->GetBitmap(),
1501                                              NULL,
1502                                              0, 0, 0, 0, width, height);
1503             if (pmask)
1504             {
1505                 guchar *bmp = gdk_pixbuf_get_pixels(pixbuf);
1506                 guchar *mask = gdk_pixbuf_get_pixels(pmask);
1507                 int bmprowinc = gdk_pixbuf_get_rowstride(pixbuf) - 4 * width;
1508                 int maskrowinc = gdk_pixbuf_get_rowstride(pmask) - 3 * width;
1509
1510                 for (int y = 0; y < height;
1511                      y++, bmp += bmprowinc, mask += maskrowinc)
1512                 {
1513                     for (int x = 0; x < width; x++, bmp += 4, mask += 3)
1514                     {
1515                         if (mask[0] == 0 /*black pixel*/)
1516                             bmp[3] = 0;
1517                     }
1518                 }
1519
1520                 gdk_pixbuf_unref(pmask);
1521             }
1522         }
1523     }
1524
1525     return M_BMPDATA->m_pixbuf;
1526 }
1527
1528 bool wxBitmap::HasPixbuf() const
1529 {
1530     wxCHECK_MSG( Ok(), false, wxT("invalid bitmap") );
1531
1532     return M_BMPDATA->m_pixbuf != NULL;
1533 }
1534
1535 void wxBitmap::SetPixbuf( GdkPixbuf *pixbuf )
1536 {
1537     if (!m_refData)
1538         m_refData = new wxBitmapRefData();
1539
1540     M_BMPDATA->m_pixbuf = pixbuf;
1541     PurgeOtherRepresentations(Pixbuf);
1542 }
1543
1544 void wxBitmap::PurgeOtherRepresentations(wxBitmap::Representation keep)
1545 {
1546     if (keep == Pixmap && HasPixbuf())
1547     {
1548         gdk_pixbuf_unref( M_BMPDATA->m_pixbuf );
1549         M_BMPDATA->m_pixbuf = NULL;
1550     }
1551     if (keep == Pixbuf && HasPixmap())
1552     {
1553         gdk_pixmap_unref( M_BMPDATA->m_pixmap );
1554         M_BMPDATA->m_pixmap = NULL;
1555     }
1556 }
1557
1558 #endif // __WXGTK20__