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