src/gtk1/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) || (depth == 32), 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 #ifdef __WXGTK20__
 322     else if (depth == 32)
 323     {
 324         M_BMPDATA->m_pixbuf = gdk_pixbuf_new( GDK_COLORSPACE_RGB, true,
 325                                               8, width, height);
 326         M_BMPDATA->m_bpp = 32;
 327     }
 328 #endif
 329     else
 330     {
 331         M_BMPDATA->m_pixmap = gdk_pixmap_new( wxGetRootWindow()->window, width, height, depth );
 332         M_BMPDATA->m_bpp = visual->depth;
 333     }
 334
 335     return Ok();
 336 }
 337
 338 bool wxBitmap::CreateFromXpm( const char **bits )
 339 {
 340     UnRef();
 341
 342     wxCHECK_MSG( bits != NULL, FALSE, wxT("invalid bitmap data") )
 343
 344     GdkVisual *visual = wxTheApp->GetGdkVisual();
 345
 346     m_refData = new wxBitmapRefData();
 347
 348     GdkBitmap *mask = (GdkBitmap*) NULL;
 349
 350     M_BMPDATA->m_pixmap = gdk_pixmap_create_from_xpm_d( wxGetRootWindow()->window, &mask, NULL, (gchar **) bits );
 351
 352     wxCHECK_MSG( M_BMPDATA->m_pixmap, FALSE, wxT("couldn't create pixmap") );
 353
 354     if (mask)
 355     {
 356         M_BMPDATA->m_mask = new wxMask();
 357         M_BMPDATA->m_mask->m_bitmap = mask;
 358     }
 359
 360     gdk_window_get_size( M_BMPDATA->m_pixmap, &(M_BMPDATA->m_width), &(M_BMPDATA->m_height) );
 361
 362     M_BMPDATA->m_bpp = visual->depth;  // Can we get a different depth from create_from_xpm_d() ?
 363
 364     return TRUE;
 365 }
 366
 367 wxBitmap wxBitmap::Rescale( int clipx, int clipy, int clipwidth, int clipheight, int newx, int newy )
 368 {
 369     wxCHECK_MSG( Ok(), wxNullBitmap, wxT("invalid bitmap") );
 370
 371     if (newy==M_BMPDATA->m_width && newy==M_BMPDATA->m_height)
 372         return *this;
 373
 374     int width = wxMax(newx, 1);
 375     int height = wxMax(newy, 1);
 376     width = wxMin(width, clipwidth);
 377     height = wxMin(height, clipheight);
 378
 379     wxBitmap bmp;
 380
 381 #ifdef __WXGTK20__
 382     if (HasPixbuf())
 383     {
 384         bmp.SetWidth(width);
 385         bmp.SetHeight(height);
 386         bmp.SetDepth(GetDepth());
 387         bmp.SetPixbuf(gdk_pixbuf_new(GDK_COLORSPACE_RGB,
 388                                      gdk_pixbuf_get_has_alpha(GetPixbuf()),
 389                                      8, width, height));
 390         gdk_pixbuf_scale(GetPixbuf(), bmp.GetPixbuf(),
 391                          0, 0, width, height,
 392                          clipx, clipy,
 393                          (double)newx/GetWidth(), (double)newy/GetHeight(),
 394                          GDK_INTERP_BILINEAR);
 395     }
 396     else
 397 #endif // __WXGTK20__
 398     {
 399         GdkImage *img = (GdkImage*) NULL;
 400         if (GetPixmap())
 401             img = gdk_image_get( GetPixmap(), 0, 0, GetWidth(), GetHeight() );
 402         else if (GetBitmap())
 403             img = gdk_image_get( GetBitmap(), 0, 0, GetWidth(), GetHeight() );
 404         else
 405             wxFAIL_MSG( wxT("Ill-formed bitmap") );
 406
 407         wxCHECK_MSG( img, wxNullBitmap, wxT("couldn't create image") );
 408
 409         int bpp = -1;
 410
 411
 412         GdkGC *gc = NULL;
 413         GdkPixmap *dstpix = NULL;
 414         if (GetPixmap())
 415         {
 416             GdkVisual *visual = gdk_window_get_visual( GetPixmap() );
 417             if (visual == NULL)
 418                 visual = wxTheApp->GetGdkVisual();
 419
 420             bpp = visual->depth;
 421             bmp = wxBitmap(width,height,bpp);
 422             dstpix = bmp.GetPixmap();
 423             gc = gdk_gc_new( dstpix );
 424         }
 425
 426         char *dst = NULL;
 427         long dstbyteperline = 0;
 428
 429         if (GetBitmap())
 430         {
 431             bpp = 1;
 432             dstbyteperline = width/8*M_BMPDATA->m_bpp;
 433             if (width*M_BMPDATA->m_bpp % 8 != 0)
 434                 dstbyteperline++;
 435             dst = (char*) malloc(dstbyteperline*height);
 436         }
 437
 438         // be careful to use the right scaling factor
 439         float scx = (float)M_BMPDATA->m_width/(float)newx;
 440         float scy = (float)M_BMPDATA->m_height/(float)newy;
 441         // prepare accel-tables
 442         int *tablex = (int *)calloc(width,sizeof(int));
 443         int *tabley = (int *)calloc(height,sizeof(int));
 444
 445         // accel table filled with clipped values
 446         for (int x = 0; x < width; x++)
 447             tablex[x] = (int) (scx * (x+clipx));
 448         for (int y = 0; y < height; y++)
 449             tabley[y] = (int) (scy * (y+clipy));
 450
 451         // Main rescaling routine starts here
 452         for (int h = 0; h < height; h++)
 453         {
 454             char outbyte = 0;
 455             int old_x = -1;
 456             guint32 old_pixval = 0;
 457
 458             for (int w = 0; w < width; w++)
 459             {
 460                 guint32 pixval;
 461                 int x = tablex[w];
 462                 if (x == old_x)
 463                     pixval = old_pixval;
 464                 else
 465                 {
 466                     pixval = gdk_image_get_pixel( img, x, tabley[h] );
 467                     old_pixval = pixval;
 468                     old_x = x;
 469                 }
 470
 471                 if (bpp == 1)
 472                 {
 473                     if (!pixval)
 474                     {
 475                         char bit=1;
 476                         char shift = bit << w % 8;
 477                         outbyte |= shift;
 478                     }
 479
 480                     if ((w+1)%8==0)
 481                     {
 482                         dst[h*dstbyteperline+w/8] = outbyte;
 483                         outbyte = 0;
 484                     }
 485                 }
 486                 else
 487                 {
 488                     GdkColor col;
 489                     col.pixel = pixval;
 490                     gdk_gc_set_foreground( gc, &col );
 491                     gdk_draw_point( dstpix, gc, w, h);
 492                 }
 493             }
 494
 495             // do not forget the last byte
 496             if ((bpp == 1) && (width % 8 != 0))
 497                 dst[h*dstbyteperline+width/8] = outbyte;
 498         }
 499
 500         gdk_image_destroy( img );
 501         if (gc) gdk_gc_unref( gc );
 502
 503         if (bpp == 1)
 504         {
 505             bmp = wxBitmap( (const char *)dst, width, height, 1 );
 506             free( dst );
 507         }
 508
 509         if (GetMask())
 510         {
 511             dstbyteperline = width/8;
 512             if (width % 8 != 0)
 513                 dstbyteperline++;
 514             dst = (char*) malloc(dstbyteperline*height);
 515             img = gdk_image_get( GetMask()->GetBitmap(), 0, 0, GetWidth(), GetHeight() );
 516
 517             for (int h = 0; h < height; h++)
 518             {
 519                 char outbyte = 0;
 520                 int old_x = -1;
 521                 guint32 old_pixval = 0;
 522
 523                 for (int w = 0; w < width; w++)
 524                 {
 525                     guint32 pixval;
 526                     int x = tablex[w];
 527                     if (x == old_x)
 528                         pixval = old_pixval;
 529                     else
 530                     {
 531                         pixval = gdk_image_get_pixel( img, x, tabley[h] );
 532                         old_pixval = pixval;
 533                         old_x = x;
 534                     }
 535
 536                     if (pixval)
 537                     {
 538                         char bit=1;
 539                         char shift = bit << w % 8;
 540                         outbyte |= shift;
 541                     }
 542
 543                     if ((w+1)%8 == 0)
 544                     {
 545                         dst[h*dstbyteperline+w/8] = outbyte;
 546                         outbyte = 0;
 547                     }
 548                 }
 549
 550                 // do not forget the last byte
 551                 if (width % 8 != 0)
 552                     dst[h*dstbyteperline+width/8] = outbyte;
 553             }
 554             wxMask* mask = new wxMask;
 555             mask->m_bitmap = gdk_bitmap_create_from_data( wxGetRootWindow()->window, (gchar *) dst, width, height );
 556             bmp.SetMask(mask);
 557
 558             free( dst );
 559             gdk_image_destroy( img );
 560         }
 561
 562         free( tablex );
 563         free( tabley );
 564     }
 565
 566     return bmp;
 567 }
 568
 569 bool wxBitmap::CreateFromImage(const wxImage& image, int depth)
 570 {
 571     UnRef();
 572
 573     wxCHECK_MSG( image.Ok(), FALSE, wxT("invalid image") )
 574     wxCHECK_MSG( depth == -1 || depth == 1, FALSE, wxT("invalid bitmap depth") )
 575
 576     if (image.GetWidth() <= 0 || image.GetHeight() <= 0)
 577         return false;
 578
 579     m_refData = new wxBitmapRefData();
 580
 581     if (depth == 1)
 582     {
 583         return CreateFromImageAsBitmap(image);
 584     }
 585     else
 586     {
 587 #ifdef __WXGTK20__
 588         if (image.HasAlpha())
 589             return CreateFromImageAsPixbuf(image);
 590 #endif
 591         return CreateFromImageAsPixmap(image);
 592     }
 593 }
 594
 595 // conversion to mono bitmap:
 596 bool wxBitmap::CreateFromImageAsBitmap(const wxImage& img)
 597 {
 598     // convert alpha channel to mask, if it is present:
 599     wxImage image(img);
 600     image.ConvertAlphaToMask();
 601
 602     int width = image.GetWidth();
 603     int height = image.GetHeight();
 604
 605     SetHeight( height );
 606     SetWidth( width );
 607
 608     SetBitmap( gdk_pixmap_new( wxGetRootWindow()->window, width, height, 1 ) );
 609
 610     SetDepth( 1 );
 611
 612     GdkVisual *visual = wxTheApp->GetGdkVisual();
 613
 614     // Create picture image
 615
 616     unsigned char *data_data = (unsigned char*)malloc( ((width >> 3)+8) * height );
 617
 618     GdkImage *data_image =
 619         gdk_image_new_bitmap( visual, data_data, width, height );
 620
 621     // Create mask image
 622
 623     GdkImage *mask_image = (GdkImage*) NULL;
 624
 625     if (image.HasMask())
 626     {
 627         unsigned char *mask_data = (unsigned char*)malloc( ((width >> 3)+8) * height );
 628
 629         mask_image =  gdk_image_new_bitmap( visual, mask_data, width, height );
 630
 631         wxMask *mask = new wxMask();
 632         mask->m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, width, height, 1 );
 633
 634         SetMask( mask );
 635     }
 636
 637     int r_mask = image.GetMaskRed();
 638     int g_mask = image.GetMaskGreen();
 639     int b_mask = image.GetMaskBlue();
 640
 641     unsigned char* data = image.GetData();
 642
 643     int index = 0;
 644     for (int y = 0; y < height; y++)
 645     {
 646         for (int x = 0; x < width; x++)
 647         {
 648             int r = data[index];
 649             index++;
 650             int g = data[index];
 651             index++;
 652             int b = data[index];
 653             index++;
 654
 655             if (image.HasMask())
 656             {
 657                 if ((r == r_mask) && (b == b_mask) && (g == g_mask))
 658                     gdk_image_put_pixel( mask_image, x, y, 1 );
 659                 else
 660                     gdk_image_put_pixel( mask_image, x, y, 0 );
 661             }
 662
 663             if ((r == 255) && (b == 255) && (g == 255))
 664                 gdk_image_put_pixel( data_image, x, y, 1 );
 665             else
 666                 gdk_image_put_pixel( data_image, x, y, 0 );
 667
 668         } // for
 669     }  // for
 670
 671     // Blit picture
 672
 673     GdkGC *data_gc = gdk_gc_new( GetBitmap() );
 674
 675     gdk_draw_image( GetBitmap(), data_gc, data_image, 0, 0, 0, 0, width, height );
 676
 677     gdk_image_destroy( data_image );
 678     gdk_gc_unref( data_gc );
 679
 680     // Blit mask
 681
 682     if (image.HasMask())
 683     {
 684         GdkGC *mask_gc = gdk_gc_new( GetMask()->GetBitmap() );
 685
 686         gdk_draw_image( GetMask()->GetBitmap(), mask_gc, mask_image, 0, 0, 0, 0, width, height );
 687
 688         gdk_image_destroy( mask_image );
 689         gdk_gc_unref( mask_gc );
 690     }
 691
 692     return true;
 693 }
 694
 695 // conversion to colour bitmap:
 696 bool wxBitmap::CreateFromImageAsPixmap(const wxImage& img)
 697 {
 698     // convert alpha channel to mask, if it is present:
 699     wxImage image(img);
 700     image.ConvertAlphaToMask();
 701
 702     int width = image.GetWidth();
 703     int height = image.GetHeight();
 704
 705     SetHeight( height );
 706     SetWidth( width );
 707
 708     SetPixmap( gdk_pixmap_new( wxGetRootWindow()->window, width, height, -1 ) );
 709
 710     GdkVisual *visual = wxTheApp->GetGdkVisual();
 711
 712     int bpp = visual->depth;
 713
 714     SetDepth( bpp );
 715
 716     if ((bpp == 16) && (visual->red_mask != 0xf800))
 717         bpp = 15;
 718     else if (bpp < 8)
 719         bpp = 8;
 720
 721     // We handle 8-bit bitmaps ourselves using the colour cube, 12-bit
 722     // visuals are not supported by GDK so we do these ourselves, too.
 723     // 15-bit and 16-bit should actually work and 24-bit certainly does.
 724 #ifdef __sgi
 725     if (!image.HasMask() && (bpp > 16))
 726 #else
 727     if (!image.HasMask() && (bpp > 12))
 728 #endif
 729     {
 730         static bool s_hasInitialized = FALSE;
 731
 732         if (!s_hasInitialized)
 733         {
 734             gdk_rgb_init();
 735             s_hasInitialized = TRUE;
 736         }
 737
 738         GdkGC *gc = gdk_gc_new( GetPixmap() );
 739
 740         gdk_draw_rgb_image( GetPixmap(),
 741                             gc,
 742                             0, 0,
 743                             width, height,
 744                             GDK_RGB_DITHER_NONE,
 745                             image.GetData(),
 746                             width*3 );
 747
 748         gdk_gc_unref( gc );
 749         return TRUE;
 750     }
 751
 752     // Create picture image
 753
 754     GdkImage *data_image =
 755         gdk_image_new( GDK_IMAGE_FASTEST, visual, width, height );
 756
 757     // Create mask image
 758
 759     GdkImage *mask_image = (GdkImage*) NULL;
 760
 761     if (image.HasMask())
 762     {
 763         unsigned char *mask_data = (unsigned char*)malloc( ((width >> 3)+8) * height );
 764
 765         mask_image =  gdk_image_new_bitmap( visual, mask_data, width, height );
 766
 767         wxMask *mask = new wxMask();
 768         mask->m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, width, height, 1 );
 769
 770         SetMask( mask );
 771     }
 772
 773     // Render
 774
 775     enum byte_order { RGB, RBG, BRG, BGR, GRB, GBR };
 776     byte_order b_o = RGB;
 777
 778     if (bpp > 8)
 779     {
 780         if ((visual->red_mask > visual->green_mask) && (visual->green_mask > visual->blue_mask))      b_o = RGB;
 781         else if ((visual->red_mask > visual->blue_mask) && (visual->blue_mask > visual->green_mask))  b_o = RBG;
 782         else if ((visual->blue_mask > visual->red_mask) && (visual->red_mask > visual->green_mask))   b_o = BRG;
 783         else if ((visual->blue_mask > visual->green_mask) && (visual->green_mask > visual->red_mask)) b_o = BGR;
 784         else if ((visual->green_mask > visual->red_mask) && (visual->red_mask > visual->blue_mask))   b_o = GRB;
 785         else if ((visual->green_mask > visual->blue_mask) && (visual->blue_mask > visual->red_mask))  b_o = GBR;
 786     }
 787
 788     int r_mask = image.GetMaskRed();
 789     int g_mask = image.GetMaskGreen();
 790     int b_mask = image.GetMaskBlue();
 791
 792     unsigned char* data = image.GetData();
 793
 794     int index = 0;
 795     for (int y = 0; y < height; y++)
 796     {
 797         for (int x = 0; x < width; x++)
 798         {
 799             int r = data[index];
 800             index++;
 801             int g = data[index];
 802             index++;
 803             int b = data[index];
 804             index++;
 805
 806             if (image.HasMask())
 807             {
 808                 if ((r == r_mask) && (b == b_mask) && (g == g_mask))
 809                     gdk_image_put_pixel( mask_image, x, y, 1 );
 810                 else
 811                     gdk_image_put_pixel( mask_image, x, y, 0 );
 812             }
 813
 814             switch (bpp)
 815             {
 816                 case 8:
 817                 {
 818                     int pixel = -1;
 819                     if (wxTheApp->m_colorCube)
 820                     {
 821                         pixel = wxTheApp->m_colorCube[ ((r & 0xf8) << 7) + ((g & 0xf8) << 2) + ((b & 0xf8) >> 3) ];
 822                     }
 823                     else
 824                     {
 825                         GdkColormap *cmap = gtk_widget_get_default_colormap();
 826                         GdkColor *colors = cmap->colors;
 827                         int max = 3 * (65536);
 828
 829                         for (int i = 0; i < cmap->size; i++)
 830                         {
 831                             int rdiff = (r << 8) - colors[i].red;
 832                             int gdiff = (g << 8) - colors[i].green;
 833                             int bdiff = (b << 8) - colors[i].blue;
 834                             int sum = ABS (rdiff) + ABS (gdiff) + ABS (bdiff);
 835                             if (sum < max) { pixel = i; max = sum; }
 836                         }
 837                     }
 838
 839                     gdk_image_put_pixel( data_image, x, y, pixel );
 840
 841                     break;
 842                 }
 843                 case 12:  // SGI only
 844                 {
 845                     guint32 pixel = 0;
 846                     switch (b_o)
 847                     {
 848                         case RGB: pixel = ((r & 0xf0) << 4) | (g & 0xf0) | ((b & 0xf0) >> 4); break;
 849                         case RBG: pixel = ((r & 0xf0) << 4) | (b & 0xf0) | ((g & 0xf0) >> 4); break;
 850                         case GRB: pixel = ((g & 0xf0) << 4) | (r & 0xf0) | ((b & 0xf0) >> 4); break;
 851                         case GBR: pixel = ((g & 0xf0) << 4) | (b & 0xf0) | ((r & 0xf0) >> 4); break;
 852                         case BRG: pixel = ((b & 0xf0) << 4) | (r & 0xf0) | ((g & 0xf0) >> 4); break;
 853                         case BGR: pixel = ((b & 0xf0) << 4) | (g & 0xf0) | ((r & 0xf0) >> 4); break;
 854                     }
 855                     gdk_image_put_pixel( data_image, x, y, pixel );
 856                     break;
 857                 }
 858                 case 15:
 859                 {
 860                     guint32 pixel = 0;
 861                     switch (b_o)
 862                     {
 863                         case RGB: pixel = ((r & 0xf8) << 7) | ((g & 0xf8) << 2) | ((b & 0xf8) >> 3); break;
 864                         case RBG: pixel = ((r & 0xf8) << 7) | ((b & 0xf8) << 2) | ((g & 0xf8) >> 3); break;
 865                         case GRB: pixel = ((g & 0xf8) << 7) | ((r & 0xf8) << 2) | ((b & 0xf8) >> 3); break;
 866                         case GBR: pixel = ((g & 0xf8) << 7) | ((b & 0xf8) << 2) | ((r & 0xf8) >> 3); break;
 867                         case BRG: pixel = ((b & 0xf8) << 7) | ((r & 0xf8) << 2) | ((g & 0xf8) >> 3); break;
 868                         case BGR: pixel = ((b & 0xf8) << 7) | ((g & 0xf8) << 2) | ((r & 0xf8) >> 3); break;
 869                     }
 870                     gdk_image_put_pixel( data_image, x, y, pixel );
 871                     break;
 872                 }
 873                 case 16:
 874                 {
 875                     // I actually don't know if for 16-bit displays, it is alway the green
 876                     // component or the second component which has 6 bits.
 877                     guint32 pixel = 0;
 878                     switch (b_o)
 879                     {
 880                         case RGB: pixel = ((r & 0xf8) << 8) | ((g & 0xfc) << 3) | ((b & 0xf8) >> 3); break;
 881                         case RBG: pixel = ((r & 0xf8) << 8) | ((b & 0xfc) << 3) | ((g & 0xf8) >> 3); break;
 882                         case GRB: pixel = ((g & 0xf8) << 8) | ((r & 0xfc) << 3) | ((b & 0xf8) >> 3); break;
 883                         case GBR: pixel = ((g & 0xf8) << 8) | ((b & 0xfc) << 3) | ((r & 0xf8) >> 3); break;
 884                         case BRG: pixel = ((b & 0xf8) << 8) | ((r & 0xfc) << 3) | ((g & 0xf8) >> 3); break;
 885                         case BGR: pixel = ((b & 0xf8) << 8) | ((g & 0xfc) << 3) | ((r & 0xf8) >> 3); break;
 886                     }
 887                     gdk_image_put_pixel( data_image, x, y, pixel );
 888                     break;
 889                 }
 890                 case 32:
 891                 case 24:
 892                 {
 893                     guint32 pixel = 0;
 894                     switch (b_o)
 895                     {
 896                         case RGB: pixel = (r << 16) | (g << 8) | b; break;
 897                         case RBG: pixel = (r << 16) | (b << 8) | g; break;
 898                         case BRG: pixel = (b << 16) | (r << 8) | g; break;
 899                         case BGR: pixel = (b << 16) | (g << 8) | r; break;
 900                         case GRB: pixel = (g << 16) | (r << 8) | b; break;
 901                         case GBR: pixel = (g << 16) | (b << 8) | r; break;
 902                     }
 903                     gdk_image_put_pixel( data_image, x, y, pixel );
 904                 }
 905                 default: break;
 906             }
 907         } // for
 908     }  // for
 909
 910     // Blit picture
 911
 912     GdkGC *data_gc = gdk_gc_new( GetPixmap() );
 913
 914     gdk_draw_image( GetPixmap(), data_gc, data_image, 0, 0, 0, 0, width, height );
 915
 916     gdk_image_destroy( data_image );
 917     gdk_gc_unref( data_gc );
 918
 919     // Blit mask
 920
 921     if (image.HasMask())
 922     {
 923         GdkGC *mask_gc = gdk_gc_new( GetMask()->GetBitmap() );
 924
 925         gdk_draw_image( GetMask()->GetBitmap(), mask_gc, mask_image, 0, 0, 0, 0, width, height );
 926
 927         gdk_image_destroy( mask_image );
 928         gdk_gc_unref( mask_gc );
 929     }
 930
 931     return true;
 932 }
 933
 934 #ifdef __WXGTK20__
 935 bool wxBitmap::CreateFromImageAsPixbuf(const wxImage& image)
 936 {
 937     int width = image.GetWidth();
 938     int height = image.GetHeight();
 939
 940     GdkPixbuf *pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB,
 941                                        image.HasAlpha(),
 942                                        8 /* bits per sample */,
 943                                        width, height);
 944     if (!pixbuf)
 945         return false;
 946
 947     wxASSERT( image.HasAlpha() ); // for now
 948     wxASSERT( gdk_pixbuf_get_n_channels(pixbuf) == 4 );
 949     wxASSERT( gdk_pixbuf_get_width(pixbuf) == width );
 950     wxASSERT( gdk_pixbuf_get_height(pixbuf) == height );
 951
 952     M_BMPDATA->m_pixbuf = pixbuf;
 953     SetHeight(height);
 954     SetWidth(width);
 955     SetDepth(wxTheApp->GetGdkVisual()->depth);
 956
 957     // Copy the data:
 958     unsigned char *in = image.GetData();
 959     unsigned char *out = gdk_pixbuf_get_pixels(pixbuf);
 960     unsigned char *alpha = image.GetAlpha();
 961
 962     int rowinc = gdk_pixbuf_get_rowstride(pixbuf) - 4 * width;
 963
 964     for (int y = 0; y < height; y++, out += rowinc)
 965     {
 966         for (int x = 0; x < width; x++, alpha++, out += 4, in += 3)
 967         {
 968             out[0] = in[0];
 969             out[1] = in[1];
 970             out[2] = in[2];
 971             out[3] = *alpha;
 972         }
 973     }
 974
 975     return true;
 976 }
 977 #endif // __WXGTK20__
 978
 979 wxImage wxBitmap::ConvertToImage() const
 980 {
 981     wxImage image;
 982
 983     wxCHECK_MSG( Ok(), wxNullImage, wxT("invalid bitmap") );
 984
 985     image.Create(GetWidth(), GetHeight());
 986     unsigned char *data = image.GetData();
 987
 988     if (!data)
 989     {
 990         wxFAIL_MSG( wxT("couldn't create image") );
 991         return wxNullImage;
 992     }
 993
 994 #ifdef __WXGTK20__
 995     if (HasPixbuf())
 996     {
 997         GdkPixbuf *pixbuf = GetPixbuf();
 998         wxASSERT( gdk_pixbuf_get_has_alpha(pixbuf) );
 999
1000         int w = GetWidth();
1001         int h = GetHeight();
1002
1003         image.SetAlpha();
1004
1005         unsigned char *alpha = image.GetAlpha();
1006         unsigned char *in = gdk_pixbuf_get_pixels(pixbuf);
1007         unsigned char *out = data;
1008         int rowinc = gdk_pixbuf_get_rowstride(pixbuf) - 4 * w;
1009
1010         for (int y = 0; y < h; y++, in += rowinc)
1011         {
1012             for (int x = 0; x < w; x++, in += 4, out += 3, alpha++)
1013             {
1014                 out[0] = in[0];
1015                 out[1] = in[1];
1016                 out[2] = in[2];
1017                 *alpha = in[3];
1018             }
1019         }
1020     }
1021     else
1022 #endif // __WXGTK20__
1023     {
1024         // the colour used as transparent one in wxImage and the one it is
1025         // replaced with when it really occurs in the bitmap
1026         static const int MASK_RED = 1;
1027         static const int MASK_GREEN = 2;
1028         static const int MASK_BLUE = 3;
1029         static const int MASK_BLUE_REPLACEMENT = 2;
1030
1031         GdkImage *gdk_image = (GdkImage*) NULL;
1032
1033         if (HasPixmap())
1034         {
1035             gdk_image = gdk_image_get( GetPixmap(),
1036                                        0, 0,
1037                                        GetWidth(), GetHeight() );
1038         }
1039         else if (GetBitmap())
1040         {
1041             gdk_image = gdk_image_get( GetBitmap(),
1042                                        0, 0,
1043                                        GetWidth(), GetHeight() );
1044         }
1045         else
1046         {
1047             wxFAIL_MSG( wxT("Ill-formed bitmap") );
1048         }
1049
1050         wxCHECK_MSG( gdk_image, wxNullImage, wxT("couldn't create image") );
1051
1052         GdkImage *gdk_image_mask = (GdkImage*) NULL;
1053         if (GetMask())
1054         {
1055             gdk_image_mask = gdk_image_get( GetMask()->GetBitmap(),
1056                                             0, 0,
1057                                             GetWidth(), GetHeight() );
1058
1059             image.SetMaskColour( MASK_RED, MASK_GREEN, MASK_BLUE );
1060         }
1061
1062         int bpp = -1;
1063         int red_shift_right = 0;
1064         int green_shift_right = 0;
1065         int blue_shift_right = 0;
1066         int red_shift_left = 0;
1067         int green_shift_left = 0;
1068         int blue_shift_left = 0;
1069         bool use_shift = FALSE;
1070
1071         if (GetPixmap())
1072         {
1073             GdkVisual *visual = gdk_window_get_visual( GetPixmap() );
1074             if (visual == NULL)
1075                 visual = wxTheApp->GetGdkVisual();
1076
1077             bpp = visual->depth;
1078             if (bpp == 16)
1079                 bpp = visual->red_prec + visual->green_prec + visual->blue_prec;
1080             red_shift_right = visual->red_shift;
1081             red_shift_left = 8-visual->red_prec;
1082             green_shift_right = visual->green_shift;
1083             green_shift_left = 8-visual->green_prec;
1084             blue_shift_right = visual->blue_shift;
1085             blue_shift_left = 8-visual->blue_prec;
1086
1087             use_shift = (visual->type == GDK_VISUAL_TRUE_COLOR) || (visual->type == GDK_VISUAL_DIRECT_COLOR);
1088         }
1089         if (GetBitmap())
1090         {
1091             bpp = 1;
1092         }
1093
1094
1095         GdkColormap *cmap = gtk_widget_get_default_colormap();
1096
1097         long pos = 0;
1098         for (int j = 0; j < GetHeight(); j++)
1099         {
1100             for (int i = 0; i < GetWidth(); i++)
1101             {
1102                 wxUint32 pixel = gdk_image_get_pixel( gdk_image, i, j );
1103                 if (bpp == 1)
1104                 {
1105                     if (pixel == 0)
1106                     {
1107                         data[pos]   = 0;
1108                         data[pos+1] = 0;
1109                         data[pos+2] = 0;
1110                     }
1111                     else
1112                     {
1113                         data[pos]   = 255;
1114                         data[pos+1] = 255;
1115                         data[pos+2] = 255;
1116                     }
1117                 }
1118                 else if (use_shift)
1119                 {
1120                     data[pos] =   (pixel >> red_shift_right)   << red_shift_left;
1121                     data[pos+1] = (pixel >> green_shift_right) << green_shift_left;
1122                     data[pos+2] = (pixel >> blue_shift_right)  << blue_shift_left;
1123                 }
1124                 else if (cmap->colors)
1125                 {
1126                     data[pos] =   cmap->colors[pixel].red   >> 8;
1127                     data[pos+1] = cmap->colors[pixel].green >> 8;
1128                     data[pos+2] = cmap->colors[pixel].blue  >> 8;
1129                 }
1130                 else
1131                 {
1132                     wxFAIL_MSG( wxT("Image conversion failed. Unknown visual type.") );
1133                 }
1134
1135                 if (gdk_image_mask)
1136                 {
1137                     int mask_pixel = gdk_image_get_pixel( gdk_image_mask, i, j );
1138                     if (mask_pixel == 0)
1139                     {
1140                         data[pos] = MASK_RED;
1141                         data[pos+1] = MASK_GREEN;
1142                         data[pos+2] = MASK_BLUE;
1143                     }
1144                     else if ( data[pos] == MASK_RED &&
1145                                 data[pos+1] == MASK_GREEN &&
1146                                     data[pos+2] == MASK_BLUE )
1147                     {
1148                         data[pos+2] = MASK_BLUE_REPLACEMENT;
1149                     }
1150                 }
1151
1152                 pos += 3;
1153             }
1154         }
1155
1156         gdk_image_destroy( gdk_image );
1157         if (gdk_image_mask) gdk_image_destroy( gdk_image_mask );
1158     }
1159
1160     return image;
1161 }
1162
1163 wxBitmap::wxBitmap( const wxBitmap& bmp )
1164         : wxBitmapBase()
1165 {
1166     Ref( bmp );
1167 }
1168
1169 wxBitmap::wxBitmap( const wxString &filename, wxBitmapType type )
1170 {
1171     LoadFile( filename, type );
1172 }
1173
1174 wxBitmap::wxBitmap( const char bits[], int width, int height, int WXUNUSED(depth))
1175 {
1176     if ( width > 0 && height > 0 )
1177     {
1178         m_refData = new wxBitmapRefData();
1179
1180         M_BMPDATA->m_mask = (wxMask *) NULL;
1181         M_BMPDATA->m_bitmap = gdk_bitmap_create_from_data
1182                               (
1183                                 wxGetRootWindow()->window,
1184                                 (gchar *) bits,
1185                                 width,
1186                                 height
1187                               );
1188         M_BMPDATA->m_width = width;
1189         M_BMPDATA->m_height = height;
1190         M_BMPDATA->m_bpp = 1;
1191
1192         wxASSERT_MSG( M_BMPDATA->m_bitmap, wxT("couldn't create bitmap") );
1193     }
1194 }
1195
1196 wxBitmap::~wxBitmap()
1197 {
1198 }
1199
1200 wxBitmap& wxBitmap::operator = ( const wxBitmap& bmp )
1201 {
1202     if ( m_refData != bmp.m_refData )
1203         Ref( bmp );
1204
1205     return *this;
1206 }
1207
1208 bool wxBitmap::operator == ( const wxBitmap& bmp ) const
1209 {
1210     return m_refData == bmp.m_refData;
1211 }
1212
1213 bool wxBitmap::operator != ( const wxBitmap& bmp ) const
1214 {
1215     return m_refData != bmp.m_refData;
1216 }
1217
1218 bool wxBitmap::Ok() const
1219 {
1220     return (m_refData != NULL) &&
1221            (
1222 #ifdef __WXGTK20__
1223               M_BMPDATA->m_pixbuf ||
1224 #endif
1225               M_BMPDATA->m_bitmap || M_BMPDATA->m_pixmap
1226            );
1227 }
1228
1229 int wxBitmap::GetHeight() const
1230 {
1231     wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1232
1233     return M_BMPDATA->m_height;
1234 }
1235
1236 int wxBitmap::GetWidth() const
1237 {
1238     wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1239
1240     return M_BMPDATA->m_width;
1241 }
1242
1243 int wxBitmap::GetDepth() const
1244 {
1245     wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1246
1247     return M_BMPDATA->m_bpp;
1248 }
1249
1250 wxMask *wxBitmap::GetMask() const
1251 {
1252     wxCHECK_MSG( Ok(), (wxMask *) NULL, wxT("invalid bitmap") );
1253
1254     return M_BMPDATA->m_mask;
1255 }
1256
1257 void wxBitmap::SetMask( wxMask *mask )
1258 {
1259     wxCHECK_RET( Ok(), wxT("invalid bitmap") );
1260
1261     if (M_BMPDATA->m_mask) delete M_BMPDATA->m_mask;
1262
1263     M_BMPDATA->m_mask = mask;
1264 }
1265
1266 bool wxBitmap::CopyFromIcon(const wxIcon& icon)
1267 {
1268     *this = icon;
1269     return TRUE;
1270 }
1271
1272 wxBitmap wxBitmap::GetSubBitmap( const wxRect& rect) const
1273 {
1274     wxCHECK_MSG( Ok() &&
1275                  (rect.x >= 0) && (rect.y >= 0) &&
1276                  (rect.x+rect.width <= M_BMPDATA->m_width) && (rect.y+rect.height <= M_BMPDATA->m_height),
1277                  wxNullBitmap, wxT("invalid bitmap or bitmap region") );
1278
1279     wxBitmap ret( rect.width, rect.height, M_BMPDATA->m_bpp );
1280     wxASSERT_MSG( ret.Ok(), wxT("GetSubBitmap error") );
1281
1282 #ifdef __WXGTK20__
1283     if (HasPixbuf())
1284     {
1285         GdkPixbuf *pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB,
1286                                            gdk_pixbuf_get_has_alpha(GetPixbuf()),
1287                                            8, GetWidth(), GetHeight());
1288         ret.SetPixbuf(pixbuf);
1289         gdk_pixbuf_copy_area(GetPixbuf(),
1290                              rect.x, rect.y, rect.width, rect.height,
1291                              pixbuf, 0, 0);
1292     }
1293     else
1294 #endif // __WXGTK20__
1295     {
1296         if (ret.GetPixmap())
1297         {
1298             GdkGC *gc = gdk_gc_new( ret.GetPixmap() );
1299             gdk_draw_pixmap( ret.GetPixmap(), gc, GetPixmap(), rect.x, rect.y, 0, 0, rect.width, rect.height );
1300             gdk_gc_destroy( gc );
1301         }
1302         else
1303         {
1304             GdkGC *gc = gdk_gc_new( ret.GetBitmap() );
1305             GdkColor col;
1306             col.pixel = 0xFFFFFF;
1307             gdk_gc_set_foreground( gc, &col );
1308             col.pixel = 0;
1309             gdk_gc_set_background( gc, &col );
1310             gdk_wx_draw_bitmap( ret.GetBitmap(), gc, GetBitmap(), rect.x, rect.y, 0, 0, rect.width, rect.height );
1311             gdk_gc_destroy( gc );
1312         }
1313     }
1314
1315     if (GetMask())
1316     {
1317         wxMask *mask = new wxMask;
1318         mask->m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, rect.width, rect.height, 1 );
1319
1320         GdkGC *gc = gdk_gc_new( mask->m_bitmap );
1321         GdkColor col;
1322         col.pixel = 0xFFFFFF;
1323         gdk_gc_set_foreground( gc, &col );
1324         col.pixel = 0;
1325         gdk_gc_set_background( gc, &col );
1326         gdk_wx_draw_bitmap( mask->m_bitmap, gc, M_BMPDATA->m_mask->m_bitmap, rect.x, rect.y, 0, 0, rect.width, rect.height );
1327         gdk_gc_destroy( gc );
1328
1329         ret.SetMask( mask );
1330     }
1331
1332     return ret;
1333 }
1334
1335 bool wxBitmap::SaveFile( const wxString &name, wxBitmapType type, const wxPalette *WXUNUSED(palette) ) const
1336 {
1337     wxCHECK_MSG( Ok(), FALSE, wxT("invalid bitmap") );
1338
1339     // Try to save the bitmap via wxImage handlers:
1340     {
1341         wxImage image = ConvertToImage();
1342         if (image.Ok()) return image.SaveFile( name, type );
1343     }
1344
1345     return FALSE;
1346 }
1347
1348 bool wxBitmap::LoadFile( const wxString &name, wxBitmapType type )
1349 {
1350     UnRef();
1351
1352     if (!wxFileExists(name))
1353         return FALSE;
1354
1355     GdkVisual *visual = wxTheApp->GetGdkVisual();
1356
1357     if (type == wxBITMAP_TYPE_XPM)
1358     {
1359         m_refData = new wxBitmapRefData();
1360
1361         GdkBitmap *mask = (GdkBitmap*) NULL;
1362
1363         M_BMPDATA->m_pixmap = gdk_pixmap_create_from_xpm
1364                               (
1365                                 wxGetRootWindow()->window,
1366                                 &mask,
1367                                 NULL,
1368                                 name.fn_str()
1369                               );
1370
1371         if (mask)
1372         {
1373            M_BMPDATA->m_mask = new wxMask();
1374            M_BMPDATA->m_mask->m_bitmap = mask;
1375         }
1376
1377         gdk_window_get_size( M_BMPDATA->m_pixmap, &(M_BMPDATA->m_width), &(M_BMPDATA->m_height) );
1378
1379         M_BMPDATA->m_bpp = visual->depth;
1380     }
1381     else // try if wxImage can load it
1382     {
1383         wxImage image;
1384         if ( !image.LoadFile( name, type ) || !image.Ok() )
1385             return FALSE;
1386
1387         *this = wxBitmap(image);
1388     }
1389
1390     return TRUE;
1391 }
1392
1393 wxPalette *wxBitmap::GetPalette() const
1394 {
1395     if (!Ok())
1396         return (wxPalette *) NULL;
1397
1398     return M_BMPDATA->m_palette;
1399 }
1400
1401 void wxBitmap::SetPalette(const wxPalette& WXUNUSED(palette))
1402 {
1403     // TODO
1404 }
1405
1406 void wxBitmap::SetHeight( int height )
1407 {
1408     if (!m_refData)
1409         m_refData = new wxBitmapRefData();
1410
1411     M_BMPDATA->m_height = height;
1412 }
1413
1414 void wxBitmap::SetWidth( int width )
1415 {
1416     if (!m_refData)
1417         m_refData = new wxBitmapRefData();
1418
1419     M_BMPDATA->m_width = width;
1420 }
1421
1422 void wxBitmap::SetDepth( int depth )
1423 {
1424     if (!m_refData)
1425         m_refData = new wxBitmapRefData();
1426
1427     M_BMPDATA->m_bpp = depth;
1428 }
1429
1430 void wxBitmap::SetPixmap( GdkPixmap *pixmap )
1431 {
1432     if (!m_refData)
1433         m_refData = new wxBitmapRefData();
1434
1435     M_BMPDATA->m_pixmap = pixmap;
1436 #ifdef __WXGTK20__
1437     PurgeOtherRepresentations(Pixmap);
1438 #endif
1439 }
1440
1441 void wxBitmap::SetBitmap( GdkPixmap *bitmap )
1442 {
1443     if (!m_refData)
1444         m_refData = new wxBitmapRefData();
1445
1446     M_BMPDATA->m_bitmap = bitmap;
1447 #ifdef __WXGTK20__
1448     PurgeOtherRepresentations(Pixmap);
1449 #endif
1450 }
1451
1452 GdkPixmap *wxBitmap::GetPixmap() const
1453 {
1454     wxCHECK_MSG( Ok(), (GdkPixmap *) NULL, wxT("invalid bitmap") );
1455
1456 #ifdef __WXGTK20__
1457     // create the pixmap on the fly if we use Pixbuf representation:
1458     if (HasPixbuf() && !HasPixmap())
1459     {
1460         delete M_BMPDATA->m_mask;
1461         M_BMPDATA->m_mask = new wxMask();
1462         gdk_pixbuf_render_pixmap_and_mask(M_BMPDATA->m_pixbuf,
1463                                           &M_BMPDATA->m_pixmap,
1464                                           &M_BMPDATA->m_mask->m_bitmap,
1465                                           128 /*threshold*/);
1466     }
1467 #endif // __WXGTK20__
1468
1469     return M_BMPDATA->m_pixmap;
1470 }
1471
1472 bool wxBitmap::HasPixmap() const
1473 {
1474     wxCHECK_MSG( Ok(), false, wxT("invalid bitmap") );
1475
1476     return M_BMPDATA->m_pixmap != NULL;
1477 }
1478
1479 GdkBitmap *wxBitmap::GetBitmap() const
1480 {
1481     wxCHECK_MSG( Ok(), (GdkBitmap *) NULL, wxT("invalid bitmap") );
1482
1483     return M_BMPDATA->m_bitmap;
1484 }
1485
1486 #ifdef __WXGTK20__
1487 GdkPixbuf *wxBitmap::GetPixbuf() const
1488 {
1489     wxCHECK_MSG( Ok(), NULL, wxT("invalid bitmap") );
1490
1491     if (HasPixmap() && !HasPixbuf())
1492     {
1493         int width = GetWidth();
1494         int height = GetHeight();
1495
1496         GdkPixbuf *pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB,
1497                                            GetMask() != NULL,
1498                                            8, width, height);
1499         M_BMPDATA->m_pixbuf =
1500             gdk_pixbuf_get_from_drawable(pixbuf, M_BMPDATA->m_pixmap, NULL,
1501                                          0, 0, 0, 0, width, height);
1502
1503         // apply the mask to created pixbuf:
1504         if (M_BMPDATA->m_pixbuf && M_BMPDATA->m_mask)
1505         {
1506             GdkPixbuf *pmask =
1507                 gdk_pixbuf_get_from_drawable(NULL,
1508                                              M_BMPDATA->m_mask->GetBitmap(),
1509                                              NULL,
1510                                              0, 0, 0, 0, width, height);
1511             if (pmask)
1512             {
1513                 guchar *bmp = gdk_pixbuf_get_pixels(pixbuf);
1514                 guchar *mask = gdk_pixbuf_get_pixels(pmask);
1515                 int bmprowinc = gdk_pixbuf_get_rowstride(pixbuf) - 4 * width;
1516                 int maskrowinc = gdk_pixbuf_get_rowstride(pmask) - 3 * width;
1517
1518                 for (int y = 0; y < height;
1519                      y++, bmp += bmprowinc, mask += maskrowinc)
1520                 {
1521                     for (int x = 0; x < width; x++, bmp += 4, mask += 3)
1522                     {
1523                         if (mask[0] == 0 /*black pixel*/)
1524                             bmp[3] = 0;
1525                     }
1526                 }
1527
1528                 gdk_pixbuf_unref(pmask);
1529             }
1530         }
1531     }
1532
1533     return M_BMPDATA->m_pixbuf;
1534 }
1535
1536 bool wxBitmap::HasPixbuf() const
1537 {
1538     wxCHECK_MSG( Ok(), false, wxT("invalid bitmap") );
1539
1540     return M_BMPDATA->m_pixbuf != NULL;
1541 }
1542
1543 void wxBitmap::SetPixbuf( GdkPixbuf *pixbuf )
1544 {
1545     if (!m_refData)
1546         m_refData = new wxBitmapRefData();
1547
1548     M_BMPDATA->m_pixbuf = pixbuf;
1549     PurgeOtherRepresentations(Pixbuf);
1550 }
1551
1552 void wxBitmap::PurgeOtherRepresentations(wxBitmap::Representation keep)
1553 {
1554     if (keep == Pixmap && HasPixbuf())
1555     {
1556         gdk_pixbuf_unref( M_BMPDATA->m_pixbuf );
1557         M_BMPDATA->m_pixbuf = NULL;
1558     }
1559     if (keep == Pixbuf && HasPixmap())
1560     {
1561         gdk_pixmap_unref( M_BMPDATA->m_pixmap );
1562         M_BMPDATA->m_pixmap = NULL;
1563     }
1564 }
1565
1566 #endif // __WXGTK20__
1567
1568 void *wxBitmap::GetRawData(wxPixelDataBase& data, int bpp)
1569 {
1570 #ifdef __WXGTK20__
1571     if (bpp != 32)
1572         return NULL;
1573
1574     GdkPixbuf *pixbuf = GetPixbuf();
1575     if (!pixbuf)
1576         return NULL;
1577
1578 #if 0
1579     if (gdk_pixbuf_get_has_alpha( pixbuf ))
1580         wxPrintf( wxT("Has alpha\n") );
1581     else
1582         wxPrintf( wxT("No alpha.\n") );
1583 #endif
1584
1585         data.m_height = gdk_pixbuf_get_height( pixbuf );
1586         data.m_width = gdk_pixbuf_get_width( pixbuf );
1587         data.m_stride = gdk_pixbuf_get_rowstride( pixbuf );
1588
1589     return gdk_pixbuf_get_pixels( pixbuf );
1590 #else
1591     return NULL;
1592 #endif
1593 }
1594
1595 void wxBitmap::UngetRawData(wxPixelDataBase& data)
1596 {
1597 }
1598
1599 //-----------------------------------------------------------------------------
1600 // wxBitmapHandler
1601 //-----------------------------------------------------------------------------
1602
1603 IMPLEMENT_DYNAMIC_CLASS(wxBitmapHandler,wxBitmapHandlerBase)
1604
1605 wxBitmapHandler::~wxBitmapHandler()
1606 {
1607 }
1608
1609 bool wxBitmapHandler::Create(wxBitmap *bitmap, void *data, long type, int width, int height, int depth)
1610 {
1611     return FALSE;
1612 }
1613
1614 bool wxBitmapHandler::LoadFile(wxBitmap *bitmap, const wxString& name, long flags,
1615         int desiredWidth, int desiredHeight)
1616 {
1617     return FALSE;
1618 }
1619
1620 bool wxBitmapHandler::SaveFile(const wxBitmap *bitmap, const wxString& name, int type, const wxPalette *palette)
1621 {
1622     return FALSE;
1623 }
1624
1625 /* static */ void wxBitmap::InitStandardHandlers()
1626 {
1627     // TODO: Insert handler based on GdkPixbufs handler later
1628 }
1629
1630