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