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 // For compilers that support precompilation, includes "wx.h".
  11 #include "wx/wxprec.h"
  12
  13 #include "wx/defs.h"
  14
  15 #include "wx/bitmap.h"
  16 #include "wx/palette.h"
  17 #include "wx/icon.h"
  18 #include "wx/filefn.h"
  19 #include "wx/image.h"
  20 #include "wx/dcmemory.h"
  21 #include "wx/app.h"
  22
  23 #ifdef __WXGTK20__
  24 #include "wx/rawbmp.h"
  25     // need this to get gdk_image_new_bitmap()
  26     #define GDK_ENABLE_BROKEN
  27 #endif
  28
  29 #include <gdk/gdk.h>
  30 #include <gtk/gtk.h>
  31 #include <gdk/gdkx.h>
  32
  33 #ifdef __WXGTK20__
  34     #include <gdk/gdkimage.h>
  35 #else // GTK+ 1.2
  36     #include <gdk/gdkrgb.h>
  37 #endif // GTK+ 2.0/1.2
  38
  39 #include "wx/math.h"
  40
  41 extern void gdk_wx_draw_bitmap     (GdkDrawable  *drawable,
  42                           GdkGC               *gc,
  43                           GdkDrawable  *src,
  44                           gint                xsrc,
  45                           gint                ysrc,
  46                           gint                xdest,
  47                           gint                ydest,
  48                           gint                width,
  49                           gint                height);
  50
  51 //-----------------------------------------------------------------------------
  52 // data
  53 //-----------------------------------------------------------------------------
  54
  55 extern GtkWidget *wxGetRootWindow();
  56
  57 //-----------------------------------------------------------------------------
  58 // wxMask
  59 //-----------------------------------------------------------------------------
  60
  61 IMPLEMENT_DYNAMIC_CLASS(wxMask,wxObject)
  62
  63 wxMask::wxMask()
  64 {
  65     m_bitmap = (GdkBitmap *) NULL;
  66 }
  67
  68 wxMask::wxMask( const wxBitmap& bitmap, const wxColour& colour )
  69 {
  70     m_bitmap = (GdkBitmap *) NULL;
  71     Create( bitmap, colour );
  72 }
  73
  74 wxMask::wxMask( const wxBitmap& bitmap, int paletteIndex )
  75 {
  76     m_bitmap = (GdkBitmap *) NULL;
  77     Create( bitmap, paletteIndex );
  78 }
  79
  80 wxMask::wxMask( const wxBitmap& bitmap )
  81 {
  82     m_bitmap = (GdkBitmap *) NULL;
  83     Create( bitmap );
  84 }
  85
  86 wxMask::~wxMask()
  87 {
  88     if (m_bitmap)
  89         gdk_bitmap_unref( m_bitmap );
  90 }
  91
  92 bool wxMask::Create( const wxBitmap& bitmap,
  93                      const wxColour& colour )
  94 {
  95     if (m_bitmap)
  96     {
  97         gdk_bitmap_unref( m_bitmap );
  98         m_bitmap = (GdkBitmap*) NULL;
  99     }
 100
 101     wxImage image = bitmap.ConvertToImage();
 102     if (!image.Ok()) return false;
 103
 104     m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, image.GetWidth(), image.GetHeight(), 1 );
 105     GdkGC *gc = gdk_gc_new( m_bitmap );
 106
 107     GdkColor color;
 108     color.red = 65000;
 109     color.green = 65000;
 110     color.blue = 65000;
 111     color.pixel = 1;
 112     gdk_gc_set_foreground( gc, &color );
 113     gdk_gc_set_fill( gc, GDK_SOLID );
 114     gdk_draw_rectangle( m_bitmap, gc, TRUE, 0, 0, image.GetWidth(), image.GetHeight() );
 115
 116     unsigned char *data = image.GetData();
 117     int index = 0;
 118
 119     unsigned char red = colour.Red();
 120     unsigned char green = colour.Green();
 121     unsigned char blue = colour.Blue();
 122
 123     GdkVisual *visual = wxTheApp->GetGdkVisual();
 124
 125     int bpp = visual->depth;
 126     if ((bpp == 16) && (visual->red_mask != 0xf800))
 127         bpp = 15;
 128     if (bpp == 15)
 129     {
 130         red = red & 0xf8;
 131         green = green & 0xf8;
 132         blue = blue & 0xf8;
 133     }
 134     else if (bpp == 16)
 135     {
 136         red = red & 0xf8;
 137         green = green & 0xfc;
 138         blue = blue & 0xf8;
 139     }
 140     else if (bpp == 12)
 141     {
 142         red = red & 0xf0;
 143         green = green & 0xf0;
 144         blue = blue & 0xf0;
 145     }
 146
 147     color.red = 0;
 148     color.green = 0;
 149     color.blue = 0;
 150     color.pixel = 0;
 151     gdk_gc_set_foreground( gc, &color );
 152
 153     for (int j = 0; j < image.GetHeight(); j++)
 154     {
 155         int start_x = -1;
 156         int i;
 157         for (i = 0; i < image.GetWidth(); i++)
 158         {
 159             if ((data[index] == red) &&
 160                 (data[index+1] == green) &&
 161                 (data[index+2] == blue))
 162             {
 163                 if (start_x == -1)
 164                 start_x = i;
 165             }
 166             else
 167             {
 168                 if (start_x != -1)
 169                 {
 170                     gdk_draw_line( m_bitmap, gc, start_x, j, i-1, j );
 171                     start_x = -1;
 172                 }
 173             }
 174             index += 3;
 175         }
 176         if (start_x != -1)
 177             gdk_draw_line( m_bitmap, gc, start_x, j, i, j );
 178     }
 179
 180     gdk_gc_unref( gc );
 181
 182     return true;
 183 }
 184
 185 bool wxMask::Create( const wxBitmap& bitmap, int paletteIndex )
 186 {
 187     unsigned char r,g,b;
 188     wxPalette *pal = bitmap.GetPalette();
 189
 190     wxCHECK_MSG( pal, false, wxT("Cannot create mask from bitmap without palette") );
 191
 192     pal->GetRGB(paletteIndex, &r, &g, &b);
 193
 194     return Create(bitmap, wxColour(r, g, b));
 195 }
 196
 197 bool wxMask::Create( const wxBitmap& bitmap )
 198 {
 199     if (m_bitmap)
 200     {
 201         gdk_bitmap_unref( m_bitmap );
 202         m_bitmap = (GdkBitmap*) NULL;
 203     }
 204
 205     if (!bitmap.Ok()) return false;
 206
 207     wxCHECK_MSG( bitmap.GetBitmap(), false, wxT("Cannot create mask from colour bitmap") );
 208
 209     m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, bitmap.GetWidth(), bitmap.GetHeight(), 1 );
 210
 211     if (!m_bitmap) return false;
 212
 213     GdkGC *gc = gdk_gc_new( m_bitmap );
 214
 215     gdk_wx_draw_bitmap( m_bitmap, gc, bitmap.GetBitmap(), 0, 0, 0, 0, bitmap.GetWidth(), bitmap.GetHeight() );
 216
 217     gdk_gc_unref( gc );
 218
 219     return true;
 220 }
 221
 222 GdkBitmap *wxMask::GetBitmap() const
 223 {
 224     return m_bitmap;
 225 }
 226
 227 //-----------------------------------------------------------------------------
 228 // wxBitmap
 229 //-----------------------------------------------------------------------------
 230
 231 class wxBitmapRefData: public wxObjectRefData
 232 {
 233 public:
 234     wxBitmapRefData();
 235     ~wxBitmapRefData();
 236
 237     GdkPixmap      *m_pixmap;
 238     GdkBitmap      *m_bitmap;
 239 #ifdef __WXGTK20__
 240     GdkPixbuf      *m_pixbuf;
 241 #endif
 242     wxMask         *m_mask;
 243     int             m_width;
 244     int             m_height;
 245     int             m_bpp;
 246     wxPalette      *m_palette;
 247 };
 248
 249 wxBitmapRefData::wxBitmapRefData()
 250 {
 251     m_pixmap = (GdkPixmap *) NULL;
 252     m_bitmap = (GdkBitmap *) NULL;
 253 #ifdef __WXGTK20__
 254     m_pixbuf = (GdkPixbuf *) NULL;
 255 #endif
 256     m_mask = (wxMask *) NULL;
 257     m_width = 0;
 258     m_height = 0;
 259     m_bpp = 0;
 260     m_palette = (wxPalette *) NULL;
 261 }
 262
 263 wxBitmapRefData::~wxBitmapRefData()
 264 {
 265     if (m_pixmap)
 266         gdk_pixmap_unref( m_pixmap );
 267     if (m_bitmap)
 268         gdk_bitmap_unref( m_bitmap );
 269 #ifdef __WXGTK20__
 270     if (m_pixbuf)
 271         gdk_pixbuf_unref( m_pixbuf );
 272 #endif
 273     delete m_mask;
 274     delete m_palette;
 275 }
 276
 277 //-----------------------------------------------------------------------------
 278
 279 #define M_BMPDATA ((wxBitmapRefData *)m_refData)
 280
 281 IMPLEMENT_DYNAMIC_CLASS(wxBitmap,wxGDIObject)
 282
 283 wxBitmap::wxBitmap()
 284 {
 285 }
 286
 287 wxBitmap::wxBitmap( int width, int height, int depth )
 288 {
 289     Create( width, height, depth );
 290 }
 291
 292 bool wxBitmap::Create( int width, int height, int depth )
 293 {
 294     UnRef();
 295
 296     if ( width <= 0 || height <= 0 )
 297     {
 298         return false;
 299     }
 300
 301     GdkVisual *visual = wxTheApp->GetGdkVisual();
 302
 303     if (depth == -1)
 304         depth = visual->depth;
 305
 306     wxCHECK_MSG( (depth == visual->depth) || (depth == 1) || (depth == 32), false,
 307                     wxT("invalid bitmap depth") )
 308
 309     m_refData = new wxBitmapRefData();
 310     M_BMPDATA->m_mask = (wxMask *) NULL;
 311     M_BMPDATA->m_width = width;
 312     M_BMPDATA->m_height = height;
 313     if (depth == 1)
 314     {
 315         M_BMPDATA->m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, width, height, 1 );
 316         M_BMPDATA->m_bpp = 1;
 317     }
 318 #ifdef __WXGTK20__
 319     else if (depth == 32)
 320     {
 321         M_BMPDATA->m_pixbuf = gdk_pixbuf_new( GDK_COLORSPACE_RGB, true,
 322                                               8, width, height);
 323         M_BMPDATA->m_bpp = 32;
 324     }
 325 #endif
 326     else
 327     {
 328         M_BMPDATA->m_pixmap = gdk_pixmap_new( wxGetRootWindow()->window, width, height, depth );
 329         M_BMPDATA->m_bpp = visual->depth;
 330     }
 331
 332     return Ok();
 333 }
 334
 335 bool wxBitmap::CreateFromXpm( const char **bits )
 336 {
 337     UnRef();
 338
 339     wxCHECK_MSG( bits != NULL, false, wxT("invalid bitmap data") )
 340
 341     GdkVisual *visual = wxTheApp->GetGdkVisual();
 342
 343     m_refData = new wxBitmapRefData();
 344
 345     GdkBitmap *mask = (GdkBitmap*) NULL;
 346
 347     M_BMPDATA->m_pixmap = gdk_pixmap_create_from_xpm_d( wxGetRootWindow()->window, &mask, NULL, (gchar **) bits );
 348
 349     wxCHECK_MSG( M_BMPDATA->m_pixmap, false, wxT("couldn't create pixmap") );
 350
 351     if (mask)
 352     {
 353         M_BMPDATA->m_mask = new wxMask();
 354         M_BMPDATA->m_mask->m_bitmap = mask;
 355     }
 356
 357     gdk_window_get_size( M_BMPDATA->m_pixmap, &(M_BMPDATA->m_width), &(M_BMPDATA->m_height) );
 358
 359     M_BMPDATA->m_bpp = visual->depth;  // Can we get a different depth from create_from_xpm_d() ?
 360
 361     return true;
 362 }
 363
 364 wxBitmap wxBitmap::Rescale( int clipx, int clipy, int clipwidth, int clipheight, int newx, int newy )
 365 {
 366     wxCHECK_MSG( Ok(), wxNullBitmap, wxT("invalid bitmap") );
 367
 368     if (newy==M_BMPDATA->m_width && newy==M_BMPDATA->m_height)
 369         return *this;
 370
 371     int width = wxMax(newx, 1);
 372     int height = wxMax(newy, 1);
 373     width = wxMin(width, clipwidth);
 374     height = wxMin(height, clipheight);
 375
 376     wxBitmap bmp;
 377
 378 #ifdef __WXGTK20__
 379     if (HasPixbuf())
 380     {
 381         bmp.SetWidth(width);
 382         bmp.SetHeight(height);
 383         bmp.SetDepth(GetDepth());
 384         bmp.SetPixbuf(gdk_pixbuf_new(GDK_COLORSPACE_RGB,
 385                                      gdk_pixbuf_get_has_alpha(GetPixbuf()),
 386                                      8, width, height));
 387         gdk_pixbuf_scale(GetPixbuf(), bmp.GetPixbuf(),
 388                          0, 0, width, height,
 389                          clipx, clipy,
 390                          (double)newx/GetWidth(), (double)newy/GetHeight(),
 391                          GDK_INTERP_BILINEAR);
 392     }
 393     else
 394 #endif // __WXGTK20__
 395     {
 396         GdkImage *img = (GdkImage*) NULL;
 397         if (GetPixmap())
 398             img = gdk_image_get( GetPixmap(), 0, 0, GetWidth(), GetHeight() );
 399         else if (GetBitmap())
 400             img = gdk_image_get( GetBitmap(), 0, 0, GetWidth(), GetHeight() );
 401         else
 402             wxFAIL_MSG( wxT("Ill-formed bitmap") );
 403
 404         wxCHECK_MSG( img, wxNullBitmap, wxT("couldn't create image") );
 405
 406         int bpp = -1;
 407
 408
 409         GdkGC *gc = NULL;
 410         GdkPixmap *dstpix = NULL;
 411         if (GetPixmap())
 412         {
 413             GdkVisual *visual = gdk_window_get_visual( GetPixmap() );
 414             if (visual == NULL)
 415                 visual = wxTheApp->GetGdkVisual();
 416
 417             bpp = visual->depth;
 418             bmp = wxBitmap(width,height,bpp);
 419             dstpix = bmp.GetPixmap();
 420             gc = gdk_gc_new( dstpix );
 421         }
 422
 423         char *dst = NULL;
 424         long dstbyteperline = 0;
 425
 426         if (GetBitmap())
 427         {
 428             bpp = 1;
 429             dstbyteperline = width/8*M_BMPDATA->m_bpp;
 430             if (width*M_BMPDATA->m_bpp % 8 != 0)
 431                 dstbyteperline++;
 432             dst = (char*) malloc(dstbyteperline*height);
 433         }
 434
 435         // be careful to use the right scaling factor
 436         float scx = (float)M_BMPDATA->m_width/(float)newx;
 437         float scy = (float)M_BMPDATA->m_height/(float)newy;
 438         // prepare accel-tables
 439         int *tablex = (int *)calloc(width,sizeof(int));
 440         int *tabley = (int *)calloc(height,sizeof(int));
 441
 442         // accel table filled with clipped values
 443         for (int x = 0; x < width; x++)
 444             tablex[x] = (int) (scx * (x+clipx));
 445         for (int y = 0; y < height; y++)
 446             tabley[y] = (int) (scy * (y+clipy));
 447
 448         // Main rescaling routine starts here
 449         for (int h = 0; h < height; h++)
 450         {
 451             char outbyte = 0;
 452             int old_x = -1;
 453             guint32 old_pixval = 0;
 454
 455             for (int w = 0; w < width; w++)
 456             {
 457                 guint32 pixval;
 458                 int x = tablex[w];
 459                 if (x == old_x)
 460                     pixval = old_pixval;
 461                 else
 462                 {
 463                     pixval = gdk_image_get_pixel( img, x, tabley[h] );
 464                     old_pixval = pixval;
 465                     old_x = x;
 466                 }
 467
 468                 if (bpp == 1)
 469                 {
 470                     if (!pixval)
 471                     {
 472                         char bit=1;
 473                         char shift = bit << (w % 8);
 474                         outbyte |= shift;
 475                     }
 476
 477                     if ((w+1)%8==0)
 478                     {
 479                         dst[h*dstbyteperline+w/8] = outbyte;
 480                         outbyte = 0;
 481                     }
 482                 }
 483                 else
 484                 {
 485                     GdkColor col;
 486                     col.pixel = pixval;
 487                     gdk_gc_set_foreground( gc, &col );
 488                     gdk_draw_point( dstpix, gc, w, h);
 489                 }
 490             }
 491
 492             // do not forget the last byte
 493             if ((bpp == 1) && (width % 8 != 0))
 494                 dst[h*dstbyteperline+width/8] = outbyte;
 495         }
 496
 497         gdk_image_destroy( img );
 498         if (gc) gdk_gc_unref( gc );
 499
 500         if (bpp == 1)
 501         {
 502             bmp = wxBitmap( (const char *)dst, width, height, 1 );
 503             free( dst );
 504         }
 505
 506         if (GetMask())
 507         {
 508             dstbyteperline = width/8;
 509             if (width % 8 != 0)
 510                 dstbyteperline++;
 511             dst = (char*) malloc(dstbyteperline*height);
 512             img = gdk_image_get( GetMask()->GetBitmap(), 0, 0, GetWidth(), GetHeight() );
 513
 514             for (int h = 0; h < height; h++)
 515             {
 516                 char outbyte = 0;
 517                 int old_x = -1;
 518                 guint32 old_pixval = 0;
 519
 520                 for (int w = 0; w < width; w++)
 521                 {
 522                     guint32 pixval;
 523                     int x = tablex[w];
 524                     if (x == old_x)
 525                         pixval = old_pixval;
 526                     else
 527                     {
 528                         pixval = gdk_image_get_pixel( img, x, tabley[h] );
 529                         old_pixval = pixval;
 530                         old_x = x;
 531                     }
 532
 533                     if (pixval)
 534                     {
 535                         char bit=1;
 536                         char shift = bit << (w % 8);
 537                         outbyte |= shift;
 538                     }
 539
 540                     if ((w+1)%8 == 0)
 541                     {
 542                         dst[h*dstbyteperline+w/8] = outbyte;
 543                         outbyte = 0;
 544                     }
 545                 }
 546
 547                 // do not forget the last byte
 548                 if (width % 8 != 0)
 549                     dst[h*dstbyteperline+width/8] = outbyte;
 550             }
 551             wxMask* mask = new wxMask;
 552             mask->m_bitmap = gdk_bitmap_create_from_data( wxGetRootWindow()->window, (gchar *) dst, width, height );
 553             bmp.SetMask(mask);
 554
 555             free( dst );
 556             gdk_image_destroy( img );
 557         }
 558
 559         free( tablex );
 560         free( tabley );
 561     }
 562
 563     return bmp;
 564 }
 565
 566 bool wxBitmap::CreateFromImage(const wxImage& image, int depth)
 567 {
 568     UnRef();
 569
 570     wxCHECK_MSG( image.Ok(), false, wxT("invalid image") )
 571     wxCHECK_MSG( depth == -1 || depth == 1, false, wxT("invalid bitmap depth") )
 572
 573     if (image.GetWidth() <= 0 || image.GetHeight() <= 0)
 574         return false;
 575
 576     m_refData = new wxBitmapRefData();
 577
 578     if (depth == 1)
 579     {
 580         return CreateFromImageAsBitmap(image);
 581     }
 582     else
 583     {
 584 #ifdef __WXGTK20__
 585         if (image.HasAlpha())
 586             return CreateFromImageAsPixbuf(image);
 587 #endif
 588         return CreateFromImageAsPixmap(image);
 589     }
 590 }
 591
 592 // conversion to mono bitmap:
 593 bool wxBitmap::CreateFromImageAsBitmap(const wxImage& img)
 594 {
 595     // convert alpha channel to mask, if it is present:
 596     wxImage image(img);
 597     image.ConvertAlphaToMask();
 598
 599     int width = image.GetWidth();
 600     int height = image.GetHeight();
 601
 602     SetHeight( height );
 603     SetWidth( width );
 604
 605     SetBitmap( gdk_pixmap_new( wxGetRootWindow()->window, width, height, 1 ) );
 606
 607     SetDepth( 1 );
 608
 609     GdkVisual *visual = wxTheApp->GetGdkVisual();
 610
 611     // Create picture image
 612
 613     unsigned char *data_data = (unsigned char*)malloc( ((width >> 3)+8) * height );
 614
 615     GdkImage *data_image =
 616         gdk_image_new_bitmap( visual, data_data, width, height );
 617
 618     // Create mask image
 619
 620     GdkImage *mask_image = (GdkImage*) NULL;
 621
 622     if (image.HasMask())
 623     {
 624         unsigned char *mask_data = (unsigned char*)malloc( ((width >> 3)+8) * height );
 625
 626         mask_image =  gdk_image_new_bitmap( visual, mask_data, width, height );
 627
 628         wxMask *mask = new wxMask();
 629         mask->m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, width, height, 1 );
 630
 631         SetMask( mask );
 632     }
 633
 634     int r_mask = image.GetMaskRed();
 635     int g_mask = image.GetMaskGreen();
 636     int b_mask = image.GetMaskBlue();
 637
 638     unsigned char* data = image.GetData();
 639
 640     int index = 0;
 641     for (int y = 0; y < height; y++)
 642     {
 643         for (int x = 0; x < width; x++)
 644         {
 645             int r = data[index];
 646             index++;
 647             int g = data[index];
 648             index++;
 649             int b = data[index];
 650             index++;
 651
 652             if (image.HasMask())
 653             {
 654                 if ((r == r_mask) && (b == b_mask) && (g == g_mask))
 655                     gdk_image_put_pixel( mask_image, x, y, 1 );
 656                 else
 657                     gdk_image_put_pixel( mask_image, x, y, 0 );
 658             }
 659
 660             if ((r == 255) && (b == 255) && (g == 255))
 661                 gdk_image_put_pixel( data_image, x, y, 1 );
 662             else
 663                 gdk_image_put_pixel( data_image, x, y, 0 );
 664
 665         } // for
 666     }  // for
 667
 668     // Blit picture
 669
 670     GdkGC *data_gc = gdk_gc_new( GetBitmap() );
 671
 672     gdk_draw_image( GetBitmap(), data_gc, data_image, 0, 0, 0, 0, width, height );
 673
 674     gdk_image_destroy( data_image );
 675     gdk_gc_unref( data_gc );
 676
 677     // Blit mask
 678
 679     if (image.HasMask())
 680     {
 681         GdkGC *mask_gc = gdk_gc_new( GetMask()->GetBitmap() );
 682
 683         gdk_draw_image( GetMask()->GetBitmap(), mask_gc, mask_image, 0, 0, 0, 0, width, height );
 684
 685         gdk_image_destroy( mask_image );
 686         gdk_gc_unref( mask_gc );
 687     }
 688
 689     return true;
 690 }
 691
 692 // conversion to colour bitmap:
 693 bool wxBitmap::CreateFromImageAsPixmap(const wxImage& img)
 694 {
 695     // convert alpha channel to mask, if it is present:
 696     wxImage image(img);
 697     image.ConvertAlphaToMask();
 698
 699     int width = image.GetWidth();
 700     int height = image.GetHeight();
 701
 702     SetHeight( height );
 703     SetWidth( width );
 704
 705     SetPixmap( gdk_pixmap_new( wxGetRootWindow()->window, width, height, -1 ) );
 706
 707     GdkVisual *visual = wxTheApp->GetGdkVisual();
 708
 709     int bpp = visual->depth;
 710
 711     SetDepth( bpp );
 712
 713     if ((bpp == 16) && (visual->red_mask != 0xf800))
 714         bpp = 15;
 715     else if (bpp < 8)
 716         bpp = 8;
 717
 718     // We handle 8-bit bitmaps ourselves using the colour cube, 12-bit
 719     // visuals are not supported by GDK so we do these ourselves, too.
 720     // 15-bit and 16-bit should actually work and 24-bit certainly does.
 721 #ifdef __sgi
 722     if (!image.HasMask() && (bpp > 16))
 723 #else
 724     if (!image.HasMask() && (bpp > 12))
 725 #endif
 726     {
 727         static bool s_hasInitialized = false;
 728
 729         if (!s_hasInitialized)
 730         {
 731             gdk_rgb_init();
 732             s_hasInitialized = true;
 733         }
 734
 735         GdkGC *gc = gdk_gc_new( GetPixmap() );
 736
 737         gdk_draw_rgb_image( GetPixmap(),
 738                             gc,
 739                             0, 0,
 740                             width, height,
 741                             GDK_RGB_DITHER_NONE,
 742                             image.GetData(),
 743                             width*3 );
 744
 745         gdk_gc_unref( gc );
 746         return true;
 747     }
 748
 749     // Create picture image
 750
 751     GdkImage *data_image =
 752         gdk_image_new( GDK_IMAGE_FASTEST, visual, width, height );
 753
 754     // Create mask image
 755
 756     GdkImage *mask_image = (GdkImage*) NULL;
 757
 758     if (image.HasMask())
 759     {
 760         unsigned char *mask_data = (unsigned char*)malloc( ((width >> 3)+8) * height );
 761
 762         mask_image =  gdk_image_new_bitmap( visual, mask_data, width, height );
 763
 764         wxMask *mask = new wxMask();
 765         mask->m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, width, height, 1 );
 766
 767         SetMask( mask );
 768     }
 769
 770     // Render
 771
 772     enum byte_order { RGB, RBG, BRG, BGR, GRB, GBR };
 773     byte_order b_o = RGB;
 774
 775     if (bpp > 8)
 776     {
 777         if ((visual->red_mask > visual->green_mask) && (visual->green_mask > visual->blue_mask))      b_o = RGB;
 778         else if ((visual->red_mask > visual->blue_mask) && (visual->blue_mask > visual->green_mask))  b_o = RBG;
 779         else if ((visual->blue_mask > visual->red_mask) && (visual->red_mask > visual->green_mask))   b_o = BRG;
 780         else if ((visual->blue_mask > visual->green_mask) && (visual->green_mask > visual->red_mask)) b_o = BGR;
 781         else if ((visual->green_mask > visual->red_mask) && (visual->red_mask > visual->blue_mask))   b_o = GRB;
 782         else if ((visual->green_mask > visual->blue_mask) && (visual->blue_mask > visual->red_mask))  b_o = GBR;
 783     }
 784
 785     int r_mask = image.GetMaskRed();
 786     int g_mask = image.GetMaskGreen();
 787     int b_mask = image.GetMaskBlue();
 788
 789     unsigned char* data = image.GetData();
 790
 791     int index = 0;
 792     for (int y = 0; y < height; y++)
 793     {
 794         for (int x = 0; x < width; x++)
 795         {
 796             int r = data[index];
 797             index++;
 798             int g = data[index];
 799             index++;
 800             int b = data[index];
 801             index++;
 802
 803             if (image.HasMask())
 804             {
 805                 if ((r == r_mask) && (b == b_mask) && (g == g_mask))
 806                     gdk_image_put_pixel( mask_image, x, y, 1 );
 807                 else
 808                     gdk_image_put_pixel( mask_image, x, y, 0 );
 809             }
 810
 811             switch (bpp)
 812             {
 813                 case 8:
 814                 {
 815                     int pixel = -1;
 816                     if (wxTheApp->m_colorCube)
 817                     {
 818                         pixel = wxTheApp->m_colorCube[ ((r & 0xf8) << 7) + ((g & 0xf8) << 2) + ((b & 0xf8) >> 3) ];
 819                     }
 820                     else
 821                     {
 822                         GdkColormap *cmap = gtk_widget_get_default_colormap();
 823                         GdkColor *colors = cmap->colors;
 824                         int max = 3 * (65536);
 825
 826                         for (int i = 0; i < cmap->size; i++)
 827                         {
 828                             int rdiff = (r << 8) - colors[i].red;
 829                             int gdiff = (g << 8) - colors[i].green;
 830                             int bdiff = (b << 8) - colors[i].blue;
 831                             int sum = ABS (rdiff) + ABS (gdiff) + ABS (bdiff);
 832                             if (sum < max) { pixel = i; max = sum; }
 833                         }
 834                     }
 835
 836                     gdk_image_put_pixel( data_image, x, y, pixel );
 837
 838                     break;
 839                 }
 840                 case 12:  // SGI only
 841                 {
 842                     guint32 pixel = 0;
 843                     switch (b_o)
 844                     {
 845                         case RGB: pixel = ((r & 0xf0) << 4) | (g & 0xf0) | ((b & 0xf0) >> 4); break;
 846                         case RBG: pixel = ((r & 0xf0) << 4) | (b & 0xf0) | ((g & 0xf0) >> 4); break;
 847                         case GRB: pixel = ((g & 0xf0) << 4) | (r & 0xf0) | ((b & 0xf0) >> 4); break;
 848                         case GBR: pixel = ((g & 0xf0) << 4) | (b & 0xf0) | ((r & 0xf0) >> 4); break;
 849                         case BRG: pixel = ((b & 0xf0) << 4) | (r & 0xf0) | ((g & 0xf0) >> 4); break;
 850                         case BGR: pixel = ((b & 0xf0) << 4) | (g & 0xf0) | ((r & 0xf0) >> 4); break;
 851                     }
 852                     gdk_image_put_pixel( data_image, x, y, pixel );
 853                     break;
 854                 }
 855                 case 15:
 856                 {
 857                     guint32 pixel = 0;
 858                     switch (b_o)
 859                     {
 860                         case RGB: pixel = ((r & 0xf8) << 7) | ((g & 0xf8) << 2) | ((b & 0xf8) >> 3); break;
 861                         case RBG: pixel = ((r & 0xf8) << 7) | ((b & 0xf8) << 2) | ((g & 0xf8) >> 3); break;
 862                         case GRB: pixel = ((g & 0xf8) << 7) | ((r & 0xf8) << 2) | ((b & 0xf8) >> 3); break;
 863                         case GBR: pixel = ((g & 0xf8) << 7) | ((b & 0xf8) << 2) | ((r & 0xf8) >> 3); break;
 864                         case BRG: pixel = ((b & 0xf8) << 7) | ((r & 0xf8) << 2) | ((g & 0xf8) >> 3); break;
 865                         case BGR: pixel = ((b & 0xf8) << 7) | ((g & 0xf8) << 2) | ((r & 0xf8) >> 3); break;
 866                     }
 867                     gdk_image_put_pixel( data_image, x, y, pixel );
 868                     break;
 869                 }
 870                 case 16:
 871                 {
 872                     // I actually don't know if for 16-bit displays, it is alway the green
 873                     // component or the second component which has 6 bits.
 874                     guint32 pixel = 0;
 875                     switch (b_o)
 876                     {
 877                         case RGB: pixel = ((r & 0xf8) << 8) | ((g & 0xfc) << 3) | ((b & 0xf8) >> 3); break;
 878                         case RBG: pixel = ((r & 0xf8) << 8) | ((b & 0xfc) << 3) | ((g & 0xf8) >> 3); break;
 879                         case GRB: pixel = ((g & 0xf8) << 8) | ((r & 0xfc) << 3) | ((b & 0xf8) >> 3); break;
 880                         case GBR: pixel = ((g & 0xf8) << 8) | ((b & 0xfc) << 3) | ((r & 0xf8) >> 3); break;
 881                         case BRG: pixel = ((b & 0xf8) << 8) | ((r & 0xfc) << 3) | ((g & 0xf8) >> 3); break;
 882                         case BGR: pixel = ((b & 0xf8) << 8) | ((g & 0xfc) << 3) | ((r & 0xf8) >> 3); break;
 883                     }
 884                     gdk_image_put_pixel( data_image, x, y, pixel );
 885                     break;
 886                 }
 887                 case 32:
 888                 case 24:
 889                 {
 890                     guint32 pixel = 0;
 891                     switch (b_o)
 892                     {
 893                         case RGB: pixel = (r << 16) | (g << 8) | b; break;
 894                         case RBG: pixel = (r << 16) | (b << 8) | g; break;
 895                         case BRG: pixel = (b << 16) | (r << 8) | g; break;
 896                         case BGR: pixel = (b << 16) | (g << 8) | r; break;
 897                         case GRB: pixel = (g << 16) | (r << 8) | b; break;
 898                         case GBR: pixel = (g << 16) | (b << 8) | r; break;
 899                     }
 900                     gdk_image_put_pixel( data_image, x, y, pixel );
 901                     break;
 902                 }
 903                 default: break;
 904             }
 905         } // for
 906     }  // for
 907
 908     // Blit picture
 909
 910     GdkGC *data_gc = gdk_gc_new( GetPixmap() );
 911
 912     gdk_draw_image( GetPixmap(), data_gc, data_image, 0, 0, 0, 0, width, height );
 913
 914     gdk_image_destroy( data_image );
 915     gdk_gc_unref( data_gc );
 916
 917     // Blit mask
 918
 919     if (image.HasMask())
 920     {
 921         GdkGC *mask_gc = gdk_gc_new( GetMask()->GetBitmap() );
 922
 923         gdk_draw_image( GetMask()->GetBitmap(), mask_gc, mask_image, 0, 0, 0, 0, width, height );
 924
 925         gdk_image_destroy( mask_image );
 926         gdk_gc_unref( mask_gc );
 927     }
 928
 929     return true;
 930 }
 931
 932 #ifdef __WXGTK20__
 933 bool wxBitmap::CreateFromImageAsPixbuf(const wxImage& image)
 934 {
 935     int width = image.GetWidth();
 936     int height = image.GetHeight();
 937
 938     GdkPixbuf *pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB,
 939                                        image.HasAlpha(),
 940                                        8 /* bits per sample */,
 941                                        width, height);
 942     if (!pixbuf)
 943         return false;
 944
 945     wxASSERT( image.HasAlpha() ); // for now
 946     wxASSERT( gdk_pixbuf_get_n_channels(pixbuf) == 4 );
 947     wxASSERT( gdk_pixbuf_get_width(pixbuf) == width );
 948     wxASSERT( gdk_pixbuf_get_height(pixbuf) == height );
 949
 950     M_BMPDATA->m_pixbuf = pixbuf;
 951     SetHeight(height);
 952     SetWidth(width);
 953     SetDepth(wxTheApp->GetGdkVisual()->depth);
 954
 955     // Copy the data:
 956     unsigned char *in = image.GetData();
 957     unsigned char *out = gdk_pixbuf_get_pixels(pixbuf);
 958     unsigned char *alpha = image.GetAlpha();
 959
 960     int rowinc = gdk_pixbuf_get_rowstride(pixbuf) - 4 * width;
 961
 962     for (int y = 0; y < height; y++, out += rowinc)
 963     {
 964         for (int x = 0; x < width; x++, alpha++, out += 4, in += 3)
 965         {
 966             out[0] = in[0];
 967             out[1] = in[1];
 968             out[2] = in[2];
 969             out[3] = *alpha;
 970         }
 971     }
 972
 973     return true;
 974 }
 975 #endif // __WXGTK20__
 976
 977 wxImage wxBitmap::ConvertToImage() const
 978 {
 979     wxImage image;
 980
 981     wxCHECK_MSG( Ok(), wxNullImage, wxT("invalid bitmap") );
 982
 983     image.Create(GetWidth(), GetHeight());
 984     unsigned char *data = image.GetData();
 985
 986     if (!data)
 987     {
 988         wxFAIL_MSG( wxT("couldn't create image") );
 989         return wxNullImage;
 990     }
 991
 992 #ifdef __WXGTK20__
 993     if (HasPixbuf())
 994     {
 995         GdkPixbuf *pixbuf = GetPixbuf();
 996         wxASSERT( gdk_pixbuf_get_has_alpha(pixbuf) );
 997
 998         int w = GetWidth();
 999         int h = GetHeight();
1000
1001         image.SetAlpha();
1002
1003         unsigned char *alpha = image.GetAlpha();
1004         unsigned char *in = gdk_pixbuf_get_pixels(pixbuf);
1005         unsigned char *out = data;
1006         int rowinc = gdk_pixbuf_get_rowstride(pixbuf) - 4 * w;
1007
1008         for (int y = 0; y < h; y++, in += rowinc)
1009         {
1010             for (int x = 0; x < w; x++, in += 4, out += 3, alpha++)
1011             {
1012                 out[0] = in[0];
1013                 out[1] = in[1];
1014                 out[2] = in[2];
1015                 *alpha = in[3];
1016             }
1017         }
1018     }
1019     else
1020 #endif // __WXGTK20__
1021     {
1022         // the colour used as transparent one in wxImage and the one it is
1023         // replaced with when it really occurs in the bitmap
1024         static const int MASK_RED = 1;
1025         static const int MASK_GREEN = 2;
1026         static const int MASK_BLUE = 3;
1027         static const int MASK_BLUE_REPLACEMENT = 2;
1028
1029         GdkImage *gdk_image = (GdkImage*) NULL;
1030
1031         if (HasPixmap())
1032         {
1033             gdk_image = gdk_image_get( GetPixmap(),
1034                                        0, 0,
1035                                        GetWidth(), GetHeight() );
1036         }
1037         else if (GetBitmap())
1038         {
1039             gdk_image = gdk_image_get( GetBitmap(),
1040                                        0, 0,
1041                                        GetWidth(), GetHeight() );
1042         }
1043         else
1044         {
1045             wxFAIL_MSG( wxT("Ill-formed bitmap") );
1046         }
1047
1048         wxCHECK_MSG( gdk_image, wxNullImage, wxT("couldn't create image") );
1049
1050         GdkImage *gdk_image_mask = (GdkImage*) NULL;
1051         if (GetMask())
1052         {
1053             gdk_image_mask = gdk_image_get( GetMask()->GetBitmap(),
1054                                             0, 0,
1055                                             GetWidth(), GetHeight() );
1056
1057             image.SetMaskColour( MASK_RED, MASK_GREEN, MASK_BLUE );
1058         }
1059
1060         int bpp = -1;
1061         int red_shift_right = 0;
1062         int green_shift_right = 0;
1063         int blue_shift_right = 0;
1064         int red_shift_left = 0;
1065         int green_shift_left = 0;
1066         int blue_shift_left = 0;
1067         bool use_shift = false;
1068
1069         if (GetPixmap())
1070         {
1071             GdkVisual *visual = gdk_window_get_visual( GetPixmap() );
1072             if (visual == NULL)
1073                 visual = wxTheApp->GetGdkVisual();
1074
1075             bpp = visual->depth;
1076             if (bpp == 16)
1077                 bpp = visual->red_prec + visual->green_prec + visual->blue_prec;
1078             red_shift_right = visual->red_shift;
1079             red_shift_left = 8-visual->red_prec;
1080             green_shift_right = visual->green_shift;
1081             green_shift_left = 8-visual->green_prec;
1082             blue_shift_right = visual->blue_shift;
1083             blue_shift_left = 8-visual->blue_prec;
1084
1085             use_shift = (visual->type == GDK_VISUAL_TRUE_COLOR) || (visual->type == GDK_VISUAL_DIRECT_COLOR);
1086         }
1087         if (GetBitmap())
1088         {
1089             bpp = 1;
1090         }
1091
1092
1093         GdkColormap *cmap = gtk_widget_get_default_colormap();
1094
1095         long pos = 0;
1096         for (int j = 0; j < GetHeight(); j++)
1097         {
1098             for (int i = 0; i < GetWidth(); i++)
1099             {
1100                 wxUint32 pixel = gdk_image_get_pixel( gdk_image, i, j );
1101                 if (bpp == 1)
1102                 {
1103                     if (pixel == 0)
1104                     {
1105                         data[pos]   = 0;
1106                         data[pos+1] = 0;
1107                         data[pos+2] = 0;
1108                     }
1109                     else
1110                     {
1111                         data[pos]   = 255;
1112                         data[pos+1] = 255;
1113                         data[pos+2] = 255;
1114                     }
1115                 }
1116                 else if (use_shift)
1117                 {
1118                     data[pos] =   (pixel >> red_shift_right)   << red_shift_left;
1119                     data[pos+1] = (pixel >> green_shift_right) << green_shift_left;
1120                     data[pos+2] = (pixel >> blue_shift_right)  << blue_shift_left;
1121                 }
1122                 else if (cmap->colors)
1123                 {
1124                     data[pos] =   cmap->colors[pixel].red   >> 8;
1125                     data[pos+1] = cmap->colors[pixel].green >> 8;
1126                     data[pos+2] = cmap->colors[pixel].blue  >> 8;
1127                 }
1128                 else
1129                 {
1130                     wxFAIL_MSG( wxT("Image conversion failed. Unknown visual type.") );
1131                 }
1132
1133                 if (gdk_image_mask)
1134                 {
1135                     int mask_pixel = gdk_image_get_pixel( gdk_image_mask, i, j );
1136                     if (mask_pixel == 0)
1137                     {
1138                         data[pos] = MASK_RED;
1139                         data[pos+1] = MASK_GREEN;
1140                         data[pos+2] = MASK_BLUE;
1141                     }
1142                     else if ( data[pos] == MASK_RED &&
1143                                 data[pos+1] == MASK_GREEN &&
1144                                     data[pos+2] == MASK_BLUE )
1145                     {
1146                         data[pos+2] = MASK_BLUE_REPLACEMENT;
1147                     }
1148                 }
1149
1150                 pos += 3;
1151             }
1152         }
1153
1154         gdk_image_destroy( gdk_image );
1155         if (gdk_image_mask) gdk_image_destroy( gdk_image_mask );
1156     }
1157
1158     return image;
1159 }
1160
1161 wxBitmap::wxBitmap( const wxBitmap& bmp )
1162         : wxBitmapBase()
1163 {
1164     Ref( bmp );
1165 }
1166
1167 wxBitmap::wxBitmap( const wxString &filename, wxBitmapType type )
1168 {
1169     LoadFile( filename, type );
1170 }
1171
1172 wxBitmap::wxBitmap( const char bits[], int width, int height, int WXUNUSED(depth))
1173 {
1174     if ( width > 0 && height > 0 )
1175     {
1176         m_refData = new wxBitmapRefData();
1177
1178         M_BMPDATA->m_mask = (wxMask *) NULL;
1179         M_BMPDATA->m_bitmap = gdk_bitmap_create_from_data
1180                               (
1181                                 wxGetRootWindow()->window,
1182                                 (gchar *) bits,
1183                                 width,
1184                                 height
1185                               );
1186         M_BMPDATA->m_width = width;
1187         M_BMPDATA->m_height = height;
1188         M_BMPDATA->m_bpp = 1;
1189
1190         wxASSERT_MSG( M_BMPDATA->m_bitmap, wxT("couldn't create bitmap") );
1191     }
1192 }
1193
1194 wxBitmap::~wxBitmap()
1195 {
1196 }
1197
1198 wxBitmap& wxBitmap::operator = ( const wxBitmap& bmp )
1199 {
1200     if ( m_refData != bmp.m_refData )
1201         Ref( bmp );
1202
1203     return *this;
1204 }
1205
1206 bool wxBitmap::operator == ( const wxBitmap& bmp ) const
1207 {
1208     return m_refData == bmp.m_refData;
1209 }
1210
1211 bool wxBitmap::operator != ( const wxBitmap& bmp ) const
1212 {
1213     return m_refData != bmp.m_refData;
1214 }
1215
1216 bool wxBitmap::Ok() const
1217 {
1218     return (m_refData != NULL) &&
1219            (
1220 #ifdef __WXGTK20__
1221               M_BMPDATA->m_pixbuf ||
1222 #endif
1223               M_BMPDATA->m_bitmap || M_BMPDATA->m_pixmap
1224            );
1225 }
1226
1227 int wxBitmap::GetHeight() const
1228 {
1229     wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1230
1231     return M_BMPDATA->m_height;
1232 }
1233
1234 int wxBitmap::GetWidth() const
1235 {
1236     wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1237
1238     return M_BMPDATA->m_width;
1239 }
1240
1241 int wxBitmap::GetDepth() const
1242 {
1243     wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1244
1245     return M_BMPDATA->m_bpp;
1246 }
1247
1248 wxMask *wxBitmap::GetMask() const
1249 {
1250     wxCHECK_MSG( Ok(), (wxMask *) NULL, wxT("invalid bitmap") );
1251
1252     return M_BMPDATA->m_mask;
1253 }
1254
1255 void wxBitmap::SetMask( wxMask *mask )
1256 {
1257     wxCHECK_RET( Ok(), wxT("invalid bitmap") );
1258
1259     if (M_BMPDATA->m_mask) delete M_BMPDATA->m_mask;
1260
1261     M_BMPDATA->m_mask = mask;
1262 }
1263
1264 bool wxBitmap::CopyFromIcon(const wxIcon& icon)
1265 {
1266     *this = icon;
1267     return true;
1268 }
1269
1270 wxBitmap wxBitmap::GetSubBitmap( const wxRect& rect) const
1271 {
1272     wxCHECK_MSG( Ok() &&
1273                  (rect.x >= 0) && (rect.y >= 0) &&
1274                  (rect.x+rect.width <= M_BMPDATA->m_width) && (rect.y+rect.height <= M_BMPDATA->m_height),
1275                  wxNullBitmap, wxT("invalid bitmap or bitmap region") );
1276
1277     wxBitmap ret( rect.width, rect.height, M_BMPDATA->m_bpp );
1278     wxASSERT_MSG( ret.Ok(), wxT("GetSubBitmap error") );
1279
1280 #ifdef __WXGTK20__
1281     if (HasPixbuf())
1282     {
1283         GdkPixbuf *pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB,
1284                                            gdk_pixbuf_get_has_alpha(GetPixbuf()),
1285                                            8, GetWidth(), GetHeight());
1286         ret.SetPixbuf(pixbuf);
1287         gdk_pixbuf_copy_area(GetPixbuf(),
1288                              rect.x, rect.y, rect.width, rect.height,
1289                              pixbuf, 0, 0);
1290     }
1291     else
1292 #endif // __WXGTK20__
1293     {
1294         if (ret.GetPixmap())
1295         {
1296             GdkGC *gc = gdk_gc_new( ret.GetPixmap() );
1297             gdk_draw_pixmap( ret.GetPixmap(), gc, GetPixmap(), rect.x, rect.y, 0, 0, rect.width, rect.height );
1298             gdk_gc_destroy( gc );
1299         }
1300         else
1301         {
1302             GdkGC *gc = gdk_gc_new( ret.GetBitmap() );
1303             GdkColor col;
1304             col.pixel = 0xFFFFFF;
1305             gdk_gc_set_foreground( gc, &col );
1306             col.pixel = 0;
1307             gdk_gc_set_background( gc, &col );
1308             gdk_wx_draw_bitmap( ret.GetBitmap(), gc, GetBitmap(), rect.x, rect.y, 0, 0, rect.width, rect.height );
1309             gdk_gc_destroy( gc );
1310         }
1311     }
1312
1313     if (GetMask())
1314     {
1315         wxMask *mask = new wxMask;
1316         mask->m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, rect.width, rect.height, 1 );
1317
1318         GdkGC *gc = gdk_gc_new( mask->m_bitmap );
1319         GdkColor col;
1320         col.pixel = 0xFFFFFF;
1321         gdk_gc_set_foreground( gc, &col );
1322         col.pixel = 0;
1323         gdk_gc_set_background( gc, &col );
1324         gdk_wx_draw_bitmap( mask->m_bitmap, gc, M_BMPDATA->m_mask->m_bitmap, rect.x, rect.y, 0, 0, rect.width, rect.height );
1325         gdk_gc_destroy( gc );
1326
1327         ret.SetMask( mask );
1328     }
1329
1330     return ret;
1331 }
1332
1333 bool wxBitmap::SaveFile( const wxString &name, wxBitmapType type, const wxPalette *WXUNUSED(palette) ) const
1334 {
1335     wxCHECK_MSG( Ok(), false, wxT("invalid bitmap") );
1336
1337     // Try to save the bitmap via wxImage handlers:
1338     {
1339         wxImage image = ConvertToImage();
1340         if (image.Ok()) return image.SaveFile( name, type );
1341     }
1342
1343     return false;
1344 }
1345
1346 bool wxBitmap::LoadFile( const wxString &name, wxBitmapType type )
1347 {
1348     UnRef();
1349
1350     if (!wxFileExists(name))
1351         return false;
1352
1353     GdkVisual *visual = wxTheApp->GetGdkVisual();
1354
1355     if (type == wxBITMAP_TYPE_XPM)
1356     {
1357         m_refData = new wxBitmapRefData();
1358
1359         GdkBitmap *mask = (GdkBitmap*) NULL;
1360
1361         M_BMPDATA->m_pixmap = gdk_pixmap_create_from_xpm
1362                               (
1363                                 wxGetRootWindow()->window,
1364                                 &mask,
1365                                 NULL,
1366                                 name.fn_str()
1367                               );
1368
1369         if (mask)
1370         {
1371            M_BMPDATA->m_mask = new wxMask();
1372            M_BMPDATA->m_mask->m_bitmap = mask;
1373         }
1374
1375         gdk_window_get_size( M_BMPDATA->m_pixmap, &(M_BMPDATA->m_width), &(M_BMPDATA->m_height) );
1376
1377         M_BMPDATA->m_bpp = visual->depth;
1378     }
1379     else // try if wxImage can load it
1380     {
1381         wxImage image;
1382         if ( !image.LoadFile( name, type ) || !image.Ok() )
1383             return false;
1384
1385         *this = wxBitmap(image);
1386     }
1387
1388     return true;
1389 }
1390
1391 wxPalette *wxBitmap::GetPalette() const
1392 {
1393     if (!Ok())
1394         return (wxPalette *) NULL;
1395
1396     return M_BMPDATA->m_palette;
1397 }
1398
1399 void wxBitmap::SetPalette(const wxPalette& WXUNUSED(palette))
1400 {
1401     // TODO
1402 }
1403
1404 void wxBitmap::SetHeight( int height )
1405 {
1406     if (!m_refData)
1407         m_refData = new wxBitmapRefData();
1408
1409     M_BMPDATA->m_height = height;
1410 }
1411
1412 void wxBitmap::SetWidth( int width )
1413 {
1414     if (!m_refData)
1415         m_refData = new wxBitmapRefData();
1416
1417     M_BMPDATA->m_width = width;
1418 }
1419
1420 void wxBitmap::SetDepth( int depth )
1421 {
1422     if (!m_refData)
1423         m_refData = new wxBitmapRefData();
1424
1425     M_BMPDATA->m_bpp = depth;
1426 }
1427
1428 void wxBitmap::SetPixmap( GdkPixmap *pixmap )
1429 {
1430     if (!m_refData)
1431         m_refData = new wxBitmapRefData();
1432
1433     M_BMPDATA->m_pixmap = pixmap;
1434 #ifdef __WXGTK20__
1435     PurgeOtherRepresentations(Pixmap);
1436 #endif
1437 }
1438
1439 void wxBitmap::SetBitmap( GdkPixmap *bitmap )
1440 {
1441     if (!m_refData)
1442         m_refData = new wxBitmapRefData();
1443
1444     M_BMPDATA->m_bitmap = bitmap;
1445 #ifdef __WXGTK20__
1446     PurgeOtherRepresentations(Pixmap);
1447 #endif
1448 }
1449
1450 GdkPixmap *wxBitmap::GetPixmap() const
1451 {
1452     wxCHECK_MSG( Ok(), (GdkPixmap *) NULL, wxT("invalid bitmap") );
1453
1454 #ifdef __WXGTK20__
1455     // create the pixmap on the fly if we use Pixbuf representation:
1456     if (HasPixbuf() && !HasPixmap())
1457     {
1458         delete M_BMPDATA->m_mask;
1459         M_BMPDATA->m_mask = new wxMask();
1460         gdk_pixbuf_render_pixmap_and_mask(M_BMPDATA->m_pixbuf,
1461                                           &M_BMPDATA->m_pixmap,
1462                                           &M_BMPDATA->m_mask->m_bitmap,
1463                                           128 /*threshold*/);
1464     }
1465 #endif // __WXGTK20__
1466
1467     return M_BMPDATA->m_pixmap;
1468 }
1469
1470 bool wxBitmap::HasPixmap() const
1471 {
1472     wxCHECK_MSG( Ok(), false, wxT("invalid bitmap") );
1473
1474     return M_BMPDATA->m_pixmap != NULL;
1475 }
1476
1477 GdkBitmap *wxBitmap::GetBitmap() const
1478 {
1479     wxCHECK_MSG( Ok(), (GdkBitmap *) NULL, wxT("invalid bitmap") );
1480
1481     return M_BMPDATA->m_bitmap;
1482 }
1483
1484 #ifdef __WXGTK20__
1485 GdkPixbuf *wxBitmap::GetPixbuf() const
1486 {
1487     wxCHECK_MSG( Ok(), NULL, wxT("invalid bitmap") );
1488
1489     if (HasPixmap() && !HasPixbuf())
1490     {
1491         int width = GetWidth();
1492         int height = GetHeight();
1493
1494         GdkPixbuf *pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB,
1495                                            GetMask() != NULL,
1496                                            8, width, height);
1497         M_BMPDATA->m_pixbuf =
1498             gdk_pixbuf_get_from_drawable(pixbuf, M_BMPDATA->m_pixmap, NULL,
1499                                          0, 0, 0, 0, width, height);
1500
1501         // apply the mask to created pixbuf:
1502         if (M_BMPDATA->m_pixbuf && M_BMPDATA->m_mask)
1503         {
1504             GdkPixbuf *pmask =
1505                 gdk_pixbuf_get_from_drawable(NULL,
1506                                              M_BMPDATA->m_mask->GetBitmap(),
1507                                              NULL,
1508                                              0, 0, 0, 0, width, height);
1509             if (pmask)
1510             {
1511                 guchar *bmp = gdk_pixbuf_get_pixels(pixbuf);
1512                 guchar *mask = gdk_pixbuf_get_pixels(pmask);
1513                 int bmprowinc = gdk_pixbuf_get_rowstride(pixbuf) - 4 * width;
1514                 int maskrowinc = gdk_pixbuf_get_rowstride(pmask) - 3 * width;
1515
1516                 for (int y = 0; y < height;
1517                      y++, bmp += bmprowinc, mask += maskrowinc)
1518                 {
1519                     for (int x = 0; x < width; x++, bmp += 4, mask += 3)
1520                     {
1521                         if (mask[0] == 0 /*black pixel*/)
1522                             bmp[3] = 0;
1523                     }
1524                 }
1525
1526                 gdk_pixbuf_unref(pmask);
1527             }
1528         }
1529     }
1530
1531     return M_BMPDATA->m_pixbuf;
1532 }
1533
1534 bool wxBitmap::HasPixbuf() const
1535 {
1536     wxCHECK_MSG( Ok(), false, wxT("invalid bitmap") );
1537
1538     return M_BMPDATA->m_pixbuf != NULL;
1539 }
1540
1541 void wxBitmap::SetPixbuf( GdkPixbuf *pixbuf )
1542 {
1543     if (!m_refData)
1544         m_refData = new wxBitmapRefData();
1545
1546     M_BMPDATA->m_pixbuf = pixbuf;
1547     PurgeOtherRepresentations(Pixbuf);
1548 }
1549
1550 void wxBitmap::PurgeOtherRepresentations(wxBitmap::Representation keep)
1551 {
1552     if (keep == Pixmap && HasPixbuf())
1553     {
1554         gdk_pixbuf_unref( M_BMPDATA->m_pixbuf );
1555         M_BMPDATA->m_pixbuf = NULL;
1556     }
1557     if (keep == Pixbuf && HasPixmap())
1558     {
1559         gdk_pixmap_unref( M_BMPDATA->m_pixmap );
1560         M_BMPDATA->m_pixmap = NULL;
1561     }
1562 }
1563
1564 #endif // __WXGTK20__
1565
1566 void *wxBitmap::GetRawData(wxPixelDataBase& data, int bpp)
1567 {
1568 #ifdef __WXGTK20__
1569     if (bpp != 32)
1570         return NULL;
1571
1572     GdkPixbuf *pixbuf = GetPixbuf();
1573     if (!pixbuf)
1574         return NULL;
1575
1576 #if 0
1577     if (gdk_pixbuf_get_has_alpha( pixbuf ))
1578         wxPrintf( wxT("Has alpha\n") );
1579     else
1580         wxPrintf( wxT("No alpha.\n") );
1581 #endif
1582
1583     data.m_height = gdk_pixbuf_get_height( pixbuf );
1584     data.m_width = gdk_pixbuf_get_width( pixbuf );
1585     data.m_stride = gdk_pixbuf_get_rowstride( pixbuf );
1586
1587     return gdk_pixbuf_get_pixels( pixbuf );
1588 #else
1589     return NULL;
1590 #endif
1591 }
1592
1593 void wxBitmap::UngetRawData(wxPixelDataBase& data)
1594 {
1595 }
1596
1597
1598 bool wxBitmap::HasAlpha() const
1599 {
1600 #ifdef __WXGTK20__
1601     return HasPixbuf();
1602 #else
1603     return false;
1604 #endif
1605 }
1606
1607 void wxBitmap::UseAlpha()
1608 {
1609 #ifdef __WXGTK20__
1610     GetPixbuf();
1611 #endif
1612 }
1613
1614 //-----------------------------------------------------------------------------
1615 // wxBitmapHandler
1616 //-----------------------------------------------------------------------------
1617
1618 IMPLEMENT_DYNAMIC_CLASS(wxBitmapHandler,wxBitmapHandlerBase)
1619
1620 wxBitmapHandler::~wxBitmapHandler()
1621 {
1622 }
1623
1624 bool wxBitmapHandler::Create(wxBitmap *bitmap, void *data, long type, int width, int height, int depth)
1625 {
1626     return false;
1627 }
1628
1629 bool wxBitmapHandler::LoadFile(wxBitmap *bitmap, const wxString& name, long flags,
1630         int desiredWidth, int desiredHeight)
1631 {
1632     return false;
1633 }
1634
1635 bool wxBitmapHandler::SaveFile(const wxBitmap *bitmap, const wxString& name, int type, const wxPalette *palette)
1636 {
1637     return false;
1638 }
1639
1640 /* static */ void wxBitmap::InitStandardHandlers()
1641 {
1642     // TODO: Insert handler based on GdkPixbufs handler later
1643 }
1644
1645