src/gtk/bitmap.cpp

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