src/gtk/bitmap.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        bitmap.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // RCS-ID:      $Id$
   6 // Copyright:   (c) 1998 Robert Roebling
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 #ifdef __GNUG__
  11 #pragma implementation "bitmap.h"
  12 #endif
  13
  14 #include "wx/defs.h"
  15
  16 #include "wx/palette.h"
  17 #include "wx/bitmap.h"
  18 #include "wx/icon.h"
  19 #include "wx/filefn.h"
  20 #include "wx/image.h"
  21 #include "wx/dcmemory.h"
  22 #include "wx/app.h"
  23
  24 #include <gdk/gdk.h>
  25 #include <gtk/gtk.h>
  26 #include <gdk/gdkx.h>
  27
  28 #if (GTK_MINOR_VERSION > 0)
  29 #include <gdk/gdkrgb.h>
  30 #endif
  31
  32 extern void gdk_wx_draw_bitmap     (GdkDrawable  *drawable,
  33                           GdkGC               *gc,
  34                           GdkDrawable  *src,
  35                           gint                xsrc,
  36                           gint                ysrc,
  37                           gint                xdest,
  38                           gint                ydest,
  39                           gint                width,
  40                           gint                height);
  41
  42 //-----------------------------------------------------------------------------
  43 // data
  44 //-----------------------------------------------------------------------------
  45
  46 extern GtkWidget *wxGetRootWindow();
  47
  48 //-----------------------------------------------------------------------------
  49 // wxMask
  50 //-----------------------------------------------------------------------------
  51
  52 IMPLEMENT_DYNAMIC_CLASS(wxMask,wxObject)
  53
  54 wxMask::wxMask()
  55 {
  56     m_bitmap = (GdkBitmap *) NULL;
  57 }
  58
  59 wxMask::wxMask( const wxBitmap& bitmap, const wxColour& colour )
  60 {
  61     m_bitmap = (GdkBitmap *) NULL;
  62     Create( bitmap, colour );
  63 }
  64
  65 wxMask::wxMask( const wxBitmap& bitmap, int paletteIndex )
  66 {
  67     m_bitmap = (GdkBitmap *) NULL;
  68     Create( bitmap, paletteIndex );
  69 }
  70
  71 wxMask::wxMask( const wxBitmap& bitmap )
  72 {
  73     m_bitmap = (GdkBitmap *) NULL;
  74     Create( bitmap );
  75 }
  76
  77 wxMask::~wxMask()
  78 {
  79     if (m_bitmap)
  80         gdk_bitmap_unref( m_bitmap );
  81 }
  82
  83 bool wxMask::Create( const wxBitmap& bitmap,
  84                      const wxColour& colour )
  85 {
  86     if (m_bitmap)
  87     {
  88         gdk_bitmap_unref( m_bitmap );
  89         m_bitmap = (GdkBitmap*) NULL;
  90     }
  91
  92     wxImage image( bitmap );
  93     if (!image.Ok()) return FALSE;
  94
  95     m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, image.GetWidth(), image.GetHeight(), 1 );
  96     GdkGC *gc = gdk_gc_new( m_bitmap );
  97
  98     GdkColor color;
  99     color.red = 65000;
 100     color.green = 65000;
 101     color.blue = 65000;
 102     color.pixel = 1;
 103     gdk_gc_set_foreground( gc, &color );
 104     gdk_gc_set_fill( gc, GDK_SOLID );
 105     gdk_draw_rectangle( m_bitmap, gc, TRUE, 0, 0, image.GetWidth(), image.GetHeight() );
 106
 107     unsigned char *data = image.GetData();
 108     int index = 0;
 109
 110     unsigned char red = colour.Red();
 111     unsigned char green = colour.Green();
 112     unsigned char blue = colour.Blue();
 113
 114     GdkVisual *visual = gdk_window_get_visual( wxGetRootWindow()->window );
 115     wxASSERT( visual );
 116
 117     int bpp = visual->depth;
 118     if ((bpp == 16) && (visual->red_mask != 0xf800)) bpp = 15;
 119     if (bpp == 15)
 120     {
 121         red = red & 0xf8;
 122         green = green & 0xf8;
 123         blue = blue & 0xf8;
 124     }
 125     if (bpp == 16)
 126     {
 127         red = red & 0xf8;
 128         green = green & 0xfc;
 129         blue = blue & 0xf8;
 130     }
 131
 132     color.red = 0;
 133     color.green = 0;
 134     color.blue = 0;
 135     color.pixel = 0;
 136     gdk_gc_set_foreground( gc, &color );
 137
 138     for (int j = 0; j < image.GetHeight(); j++)
 139     {
 140         int start_x = -1;
 141         int i;
 142         for (i = 0; i < image.GetWidth(); i++)
 143         {
 144             if ((data[index] == red) &&
 145                 (data[index+1] == green) &&
 146                 (data[index+2] == blue))
 147             {
 148                 if (start_x == -1)
 149                 start_x = i;
 150             }
 151             else
 152             {
 153                 if (start_x != -1)
 154                 {
 155                     gdk_draw_line( m_bitmap, gc, start_x, j, i-1, j );
 156                     start_x = -1;
 157                 }
 158             }
 159             index += 3;
 160         }
 161         if (start_x != -1)
 162             gdk_draw_line( m_bitmap, gc, start_x, j, i, j );
 163     }
 164
 165     gdk_gc_unref( gc );
 166
 167     return TRUE;
 168 }
 169
 170 bool wxMask::Create( const wxBitmap& bitmap, int paletteIndex )
 171 {
 172     unsigned char r,g,b;
 173     wxPalette *pal = bitmap.GetPalette();
 174
 175     wxCHECK_MSG( pal, FALSE, wxT("Cannot create mask from bitmap without palette") );
 176
 177     pal->GetRGB(paletteIndex, &r, &g, &b);
 178
 179     return Create(bitmap, wxColour(r, g, b));
 180 }
 181
 182 bool wxMask::Create( const wxBitmap& bitmap )
 183 {
 184     if (m_bitmap)
 185     {
 186         gdk_bitmap_unref( m_bitmap );
 187         m_bitmap = (GdkBitmap*) NULL;
 188     }
 189
 190     if (!bitmap.Ok()) return FALSE;
 191
 192     wxCHECK_MSG( bitmap.GetBitmap(), FALSE, wxT("Cannot create mask from colour bitmap") );
 193
 194     m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, bitmap.GetWidth(), bitmap.GetHeight(), 1 );
 195
 196     if (!m_bitmap) return FALSE;
 197
 198     GdkGC *gc = gdk_gc_new( m_bitmap );
 199
 200     gdk_wx_draw_bitmap( m_bitmap, gc, bitmap.GetBitmap(), 0, 0, 0, 0, bitmap.GetWidth(), bitmap.GetHeight() );
 201
 202     gdk_gc_unref( gc );
 203
 204     return TRUE;
 205 }
 206
 207 GdkBitmap *wxMask::GetBitmap() const
 208 {
 209     return m_bitmap;
 210 }
 211
 212 //-----------------------------------------------------------------------------
 213 // wxBitmap
 214 //-----------------------------------------------------------------------------
 215
 216 class wxBitmapRefData: public wxObjectRefData
 217 {
 218 public:
 219     wxBitmapRefData();
 220     ~wxBitmapRefData();
 221
 222     GdkPixmap      *m_pixmap;
 223     GdkBitmap      *m_bitmap;
 224     wxMask         *m_mask;
 225     int             m_width;
 226     int             m_height;
 227     int             m_bpp;
 228     wxPalette      *m_palette;
 229 };
 230
 231 wxBitmapRefData::wxBitmapRefData()
 232 {
 233     m_pixmap = (GdkPixmap *) NULL;
 234     m_bitmap = (GdkBitmap *) NULL;
 235     m_mask = (wxMask *) NULL;
 236     m_width = 0;
 237     m_height = 0;
 238     m_bpp = 0;
 239     m_palette = (wxPalette *) NULL;
 240 }
 241
 242 wxBitmapRefData::~wxBitmapRefData()
 243 {
 244     if (m_pixmap) gdk_pixmap_unref( m_pixmap );
 245     if (m_bitmap) gdk_bitmap_unref( m_bitmap );
 246     if (m_mask) delete m_mask;
 247     if (m_palette) delete m_palette;
 248 }
 249
 250 //-----------------------------------------------------------------------------
 251
 252 #define M_BMPDATA ((wxBitmapRefData *)m_refData)
 253
 254 IMPLEMENT_DYNAMIC_CLASS(wxBitmap,wxGDIObject)
 255
 256 wxBitmap::wxBitmap()
 257 {
 258     if (wxTheBitmapList) wxTheBitmapList->AddBitmap(this);
 259 }
 260
 261 wxBitmap::wxBitmap( int width, int height, int depth )
 262 {
 263     Create( width, height, depth );
 264
 265     if (wxTheBitmapList) wxTheBitmapList->AddBitmap(this);
 266 }
 267
 268 bool wxBitmap::Create( int width, int height, int depth )
 269 {
 270     UnRef();
 271
 272     wxCHECK_MSG( (width > 0) && (height > 0), FALSE, wxT("invalid bitmap size") )
 273
 274     GdkVisual *visual = gdk_window_get_visual( wxGetRootWindow()->window );
 275     wxASSERT( visual );
 276
 277     if (depth == -1) depth = visual->depth;
 278
 279     wxCHECK_MSG( (depth == visual->depth) ||
 280                  (depth == 1), FALSE, wxT("invalid bitmap depth") )
 281
 282     m_refData = new wxBitmapRefData();
 283     M_BMPDATA->m_mask = (wxMask *) NULL;
 284     M_BMPDATA->m_width = width;
 285     M_BMPDATA->m_height = height;
 286     if (depth == 1)
 287     {
 288         M_BMPDATA->m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, width, height, 1 );
 289         M_BMPDATA->m_bpp = 1;
 290     }
 291     else
 292     {
 293         M_BMPDATA->m_pixmap = gdk_pixmap_new( wxGetRootWindow()->window, width, height, depth );
 294         M_BMPDATA->m_bpp = visual->depth;
 295     }
 296
 297     return Ok();
 298 }
 299
 300 bool wxBitmap::CreateFromXpm( const char **bits )
 301 {
 302     wxCHECK_MSG( bits != NULL, FALSE, wxT("invalid bitmap data") )
 303
 304     GdkVisual *visual = gdk_window_get_visual( wxGetRootWindow()->window );
 305     wxASSERT( visual );
 306
 307     m_refData = new wxBitmapRefData();
 308
 309     GdkBitmap *mask = (GdkBitmap*) NULL;
 310
 311     M_BMPDATA->m_pixmap = gdk_pixmap_create_from_xpm_d( wxGetRootWindow()->window, &mask, NULL, (gchar **) bits );
 312
 313     wxCHECK_MSG( M_BMPDATA->m_pixmap, FALSE, wxT("couldn't create pixmap") );
 314
 315     if (mask)
 316     {
 317         M_BMPDATA->m_mask = new wxMask();
 318         M_BMPDATA->m_mask->m_bitmap = mask;
 319     }
 320
 321     gdk_window_get_size( M_BMPDATA->m_pixmap, &(M_BMPDATA->m_width), &(M_BMPDATA->m_height) );
 322
 323     M_BMPDATA->m_bpp = visual->depth;  // ?
 324
 325     if (wxTheBitmapList) wxTheBitmapList->AddBitmap(this);
 326
 327     return TRUE;
 328 }
 329
 330 bool wxBitmap::CreateFromImage( const wxImage& image, int depth )
 331 {
 332     wxCHECK_MSG( image.Ok(), FALSE, wxT("invalid image") )
 333     wxCHECK_MSG( depth == -1 || depth == 1, FALSE, wxT("invalid bitmap depth") )
 334
 335     m_refData = new wxBitmapRefData();
 336
 337     if (wxTheBitmapList) wxTheBitmapList->AddBitmap(this);
 338
 339     // ------
 340     // convertion to mono bitmap:
 341     // ------
 342     if (depth == 1)
 343     {
 344         int width = image.GetWidth();
 345         int height = image.GetHeight();
 346
 347         SetHeight( height );
 348         SetWidth( width );
 349
 350         SetBitmap( gdk_pixmap_new( wxGetRootWindow()->window, width, height, 1 ) );
 351
 352         SetDepth( 1 );
 353
 354         GdkVisual *visual = gdk_window_get_visual( wxGetRootWindow()->window );
 355         wxASSERT( visual );
 356
 357         // Create picture image
 358
 359         unsigned char *data_data = (unsigned char*)malloc( ((width >> 3)+8) * height );
 360
 361         GdkImage *data_image =
 362             gdk_image_new_bitmap( visual, data_data, width, height );
 363
 364         // Create mask image
 365
 366         GdkImage *mask_image = (GdkImage*) NULL;
 367
 368         if (image.HasMask())
 369         {
 370             unsigned char *mask_data = (unsigned char*)malloc( ((width >> 3)+8) * height );
 371
 372             mask_image =  gdk_image_new_bitmap( visual, mask_data, width, height );
 373
 374             wxMask *mask = new wxMask();
 375             mask->m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, width, height, 1 );
 376
 377             SetMask( mask );
 378         }
 379
 380         int r_mask = image.GetMaskRed();
 381         int g_mask = image.GetMaskGreen();
 382         int b_mask = image.GetMaskBlue();
 383
 384         unsigned char* data = image.GetData();
 385
 386         int index = 0;
 387         for (int y = 0; y < height; y++)
 388         {
 389             for (int x = 0; x < width; x++)
 390             {
 391                 int r = data[index];
 392                 index++;
 393                 int g = data[index];
 394                 index++;
 395                 int b = data[index];
 396                 index++;
 397
 398                 if (image.HasMask())
 399                 {
 400                     if ((r == r_mask) && (b == b_mask) && (g == g_mask))
 401                         gdk_image_put_pixel( mask_image, x, y, 1 );
 402                     else
 403                         gdk_image_put_pixel( mask_image, x, y, 0 );
 404                 }
 405
 406                 if ((r == 255) && (b == 255) && (g == 255))
 407                     gdk_image_put_pixel( data_image, x, y, 1 );
 408                 else
 409                     gdk_image_put_pixel( data_image, x, y, 0 );
 410
 411             } // for
 412         }  // for
 413
 414         // Blit picture
 415
 416         GdkGC *data_gc = gdk_gc_new( GetBitmap() );
 417
 418         gdk_draw_image( GetBitmap(), data_gc, data_image, 0, 0, 0, 0, width, height );
 419
 420         gdk_image_destroy( data_image );
 421         gdk_gc_unref( data_gc );
 422
 423         // Blit mask
 424
 425         if (image.HasMask())
 426         {
 427             GdkGC *mask_gc = gdk_gc_new( GetMask()->GetBitmap() );
 428
 429             gdk_draw_image( GetMask()->GetBitmap(), mask_gc, mask_image, 0, 0, 0, 0, width, height );
 430
 431             gdk_image_destroy( mask_image );
 432             gdk_gc_unref( mask_gc );
 433         }
 434     }
 435
 436     // ------
 437     // convertion to colour bitmap:
 438     // ------
 439     else
 440     {
 441         int width = image.GetWidth();
 442         int height = image.GetHeight();
 443
 444         SetHeight( height );
 445         SetWidth( width );
 446
 447         SetPixmap( gdk_pixmap_new( wxGetRootWindow()->window, width, height, -1 ) );
 448
 449         // Retrieve depth
 450
 451         GdkVisual *visual = gdk_window_get_visual( wxGetRootWindow()->window );
 452         wxASSERT( visual );
 453
 454         int bpp = visual->depth;
 455
 456         SetDepth( bpp );
 457
 458         if ((bpp == 16) && (visual->red_mask != 0xf800)) bpp = 15;
 459         if (bpp < 8) bpp = 8;
 460
 461 #if (GTK_MINOR_VERSION > 0)
 462
 463         if (!image.HasMask() && (bpp > 8))
 464         {
 465             static bool s_hasInitialized = FALSE;
 466
 467             if (!s_hasInitialized)
 468             {
 469                 gdk_rgb_init();
 470                 s_hasInitialized = TRUE;
 471             }
 472
 473             GdkGC *gc = gdk_gc_new( GetPixmap() );
 474
 475             gdk_draw_rgb_image( GetPixmap(),
 476                                 gc,
 477                                 0, 0,
 478                                 width, height,
 479                                 GDK_RGB_DITHER_NONE,
 480                                 image.GetData(),
 481                                 width*3 );
 482
 483             gdk_gc_unref( gc );
 484             return TRUE;
 485         }
 486
 487 #endif
 488
 489         // Create picture image
 490
 491         GdkImage *data_image =
 492             gdk_image_new( GDK_IMAGE_FASTEST, visual, width, height );
 493
 494         // Create mask image
 495
 496         GdkImage *mask_image = (GdkImage*) NULL;
 497
 498         if (image.HasMask())
 499         {
 500             unsigned char *mask_data = (unsigned char*)malloc( ((width >> 3)+8) * height );
 501
 502             mask_image =  gdk_image_new_bitmap( visual, mask_data, width, height );
 503
 504             wxMask *mask = new wxMask();
 505             mask->m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, width, height, 1 );
 506
 507             SetMask( mask );
 508         }
 509
 510         // Render
 511
 512         enum byte_order { RGB, RBG, BRG, BGR, GRB, GBR };
 513         byte_order b_o = RGB;
 514
 515         if (bpp >= 24)
 516         {
 517             if ((visual->red_mask > visual->green_mask) && (visual->green_mask > visual->blue_mask))      b_o = RGB;
 518             else if ((visual->red_mask > visual->blue_mask) && (visual->blue_mask > visual->green_mask))  b_o = RGB;
 519             else if ((visual->blue_mask > visual->red_mask) && (visual->red_mask > visual->green_mask))   b_o = BRG;
 520             else if ((visual->blue_mask > visual->green_mask) && (visual->green_mask > visual->red_mask)) b_o = BGR;
 521             else if ((visual->green_mask > visual->red_mask) && (visual->red_mask > visual->blue_mask))   b_o = GRB;
 522             else if ((visual->green_mask > visual->blue_mask) && (visual->blue_mask > visual->red_mask))  b_o = GBR;
 523         }
 524
 525         int r_mask = image.GetMaskRed();
 526         int g_mask = image.GetMaskGreen();
 527         int b_mask = image.GetMaskBlue();
 528
 529         unsigned char* data = image.GetData();
 530
 531         int index = 0;
 532         for (int y = 0; y < height; y++)
 533         {
 534             for (int x = 0; x < width; x++)
 535             {
 536                 int r = data[index];
 537                 index++;
 538                 int g = data[index];
 539                 index++;
 540                 int b = data[index];
 541                 index++;
 542
 543                 if (image.HasMask())
 544                 {
 545                     if ((r == r_mask) && (b == b_mask) && (g == g_mask))
 546                         gdk_image_put_pixel( mask_image, x, y, 1 );
 547                     else
 548                         gdk_image_put_pixel( mask_image, x, y, 0 );
 549                 }
 550
 551                 switch (bpp)
 552                 {
 553                 case 8:
 554                     {
 555                         int pixel = -1;
 556                         if (wxTheApp->m_colorCube)
 557                         {
 558                             pixel = wxTheApp->m_colorCube[ ((r & 0xf8) << 7) + ((g & 0xf8) << 2) + ((b & 0xf8) >> 3) ];
 559                         }
 560                         else
 561                         {
 562                             GdkColormap *cmap = gtk_widget_get_default_colormap();
 563                             GdkColor *colors = cmap->colors;
 564                             int max = 3 * (65536);
 565
 566                             for (int i = 0; i < cmap->size; i++)
 567                             {
 568                                 int rdiff = (r << 8) - colors[i].red;
 569                                 int gdiff = (g << 8) - colors[i].green;
 570                                 int bdiff = (b << 8) - colors[i].blue;
 571                                 int sum = ABS (rdiff) + ABS (gdiff) + ABS (bdiff);
 572                                 if (sum < max) { pixel = i; max = sum; }
 573                             }
 574                         }
 575
 576                         gdk_image_put_pixel( data_image, x, y, pixel );
 577
 578                         break;
 579                     }
 580                 case 15:
 581                     {
 582                         guint32 pixel = ((r & 0xf8) << 7) | ((g & 0xf8) << 2) | ((b & 0xf8) >> 3);
 583                         gdk_image_put_pixel( data_image, x, y, pixel );
 584                         break;
 585                     }
 586                 case 16:
 587                     {
 588                         guint32 pixel = ((r & 0xf8) << 8) | ((g & 0xfc) << 3) | ((b & 0xf8) >> 3);
 589                         gdk_image_put_pixel( data_image, x, y, pixel );
 590                         break;
 591                     }
 592                 case 32:
 593                 case 24:
 594                     {
 595                         guint32 pixel = 0;
 596                         switch (b_o)
 597                         {
 598                         case RGB: pixel = (r << 16) | (g << 8) | b; break;
 599                         case RBG: pixel = (r << 16) | (b << 8) | g; break;
 600                         case BRG: pixel = (b << 16) | (r << 8) | g; break;
 601                         case BGR: pixel = (b << 16) | (g << 8) | r; break;
 602                         case GRB: pixel = (g << 16) | (r << 8) | b; break;
 603                         case GBR: pixel = (g << 16) | (b << 8) | r; break;
 604                         }
 605                         gdk_image_put_pixel( data_image, x, y, pixel );
 606                     }
 607                 default: break;
 608                 }
 609             } // for
 610         }  // for
 611
 612         // Blit picture
 613
 614         GdkGC *data_gc = gdk_gc_new( GetPixmap() );
 615
 616         gdk_draw_image( GetPixmap(), data_gc, data_image, 0, 0, 0, 0, width, height );
 617
 618         gdk_image_destroy( data_image );
 619         gdk_gc_unref( data_gc );
 620
 621         // Blit mask
 622
 623         if (image.HasMask())
 624         {
 625             GdkGC *mask_gc = gdk_gc_new( GetMask()->GetBitmap() );
 626
 627             gdk_draw_image( GetMask()->GetBitmap(), mask_gc, mask_image, 0, 0, 0, 0, width, height );
 628
 629             gdk_image_destroy( mask_image );
 630             gdk_gc_unref( mask_gc );
 631         }
 632     }
 633
 634     return TRUE;
 635 }
 636
 637 wxImage wxBitmap::ConvertToImage() const
 638 {
 639     wxImage image;
 640
 641     wxCHECK_MSG( Ok(), wxNullImage, wxT("invalid bitmap") );
 642
 643     GdkImage *gdk_image = (GdkImage*) NULL;
 644     if (GetPixmap())
 645     {
 646         gdk_image = gdk_image_get( GetPixmap(),
 647             0, 0,
 648             GetWidth(), GetHeight() );
 649     } else
 650     if (GetBitmap())
 651     {
 652         gdk_image = gdk_image_get( GetBitmap(),
 653             0, 0,
 654             GetWidth(), GetHeight() );
 655     } else
 656     {
 657         wxFAIL_MSG( wxT("Ill-formed bitmap") );
 658     }
 659
 660     wxCHECK_MSG( gdk_image, wxNullImage, wxT("couldn't create image") );
 661
 662     image.Create( GetWidth(), GetHeight() );
 663     char unsigned *data = image.GetData();
 664
 665     if (!data)
 666     {
 667         gdk_image_destroy( gdk_image );
 668         wxFAIL_MSG( wxT("couldn't create image") );
 669         return wxNullImage;
 670     }
 671
 672     GdkImage *gdk_image_mask = (GdkImage*) NULL;
 673     if (GetMask())
 674     {
 675         gdk_image_mask = gdk_image_get( GetMask()->GetBitmap(),
 676             0, 0,
 677             GetWidth(), GetHeight() );
 678
 679         image.SetMaskColour( 16, 16, 16 );  // anything unlikely and dividable
 680     }
 681
 682     int bpp = -1;
 683     int red_shift_right = 0;
 684     int green_shift_right = 0;
 685     int blue_shift_right = 0;
 686     int red_shift_left = 0;
 687     int green_shift_left = 0;
 688     int blue_shift_left = 0;
 689     bool use_shift = FALSE;
 690
 691     if (GetPixmap())
 692     {
 693         GdkVisual *visual = gdk_window_get_visual( GetPixmap() );
 694
 695         if (visual == NULL) visual = gdk_window_get_visual( wxGetRootWindow()->window );
 696         bpp = visual->depth;
 697         if (bpp == 16) bpp = visual->red_prec + visual->green_prec + visual->blue_prec;
 698         red_shift_right = visual->red_shift;
 699         red_shift_left = 8-visual->red_prec;
 700         green_shift_right = visual->green_shift;
 701         green_shift_left = 8-visual->green_prec;
 702         blue_shift_right = visual->blue_shift;
 703         blue_shift_left = 8-visual->blue_prec;
 704
 705         use_shift = (visual->type == GDK_VISUAL_TRUE_COLOR) || (visual->type == GDK_VISUAL_DIRECT_COLOR);
 706     }
 707     if (GetBitmap())
 708     {
 709         bpp = 1;
 710     }
 711
 712
 713     GdkColormap *cmap = gtk_widget_get_default_colormap();
 714
 715     long pos = 0;
 716     for (int j = 0; j < GetHeight(); j++)
 717     {
 718         for (int i = 0; i < GetWidth(); i++)
 719         {
 720             wxUint32 pixel = gdk_image_get_pixel( gdk_image, i, j );
 721                 if (bpp == 1)
 722                 {
 723                     if (pixel == 0)
 724                         {
 725                     data[pos]   = 0;
 726                     data[pos+1] = 0;
 727                     data[pos+2] = 0;
 728                         }
 729                         else
 730                         {
 731                     data[pos]   = 255;
 732                     data[pos+1] = 255;
 733                     data[pos+2] = 255;
 734                         }
 735             }
 736             else if (use_shift)
 737             {
 738                 data[pos] =   (pixel >> red_shift_right)   << red_shift_left;
 739                 data[pos+1] = (pixel >> green_shift_right) << green_shift_left;
 740                 data[pos+2] = (pixel >> blue_shift_right)  << blue_shift_left;
 741                 }
 742             else if (cmap->colors)
 743             {
 744                 data[pos] =   cmap->colors[pixel].red   >> 8;
 745                 data[pos+1] = cmap->colors[pixel].green >> 8;
 746                 data[pos+2] = cmap->colors[pixel].blue  >> 8;
 747             }
 748             else
 749             {
 750                 wxFAIL_MSG( wxT("Image conversion failed. Unknown visual type.") );
 751             }
 752
 753             if (gdk_image_mask)
 754             {
 755                 int mask_pixel = gdk_image_get_pixel( gdk_image_mask, i, j );
 756                 if (mask_pixel == 0)
 757                 {
 758                     data[pos] = 16;
 759                     data[pos+1] = 16;
 760                     data[pos+2] = 16;
 761                 }
 762             }
 763
 764             pos += 3;
 765         }
 766     }
 767
 768     gdk_image_destroy( gdk_image );
 769     if (gdk_image_mask) gdk_image_destroy( gdk_image_mask );
 770
 771     return image;
 772 }
 773
 774 wxBitmap::wxBitmap( const wxBitmap& bmp )
 775 {
 776     Ref( bmp );
 777
 778     if (wxTheBitmapList) wxTheBitmapList->AddBitmap(this);
 779 }
 780
 781 wxBitmap::wxBitmap( const wxString &filename, int type )
 782 {
 783     LoadFile( filename, type );
 784
 785     if (wxTheBitmapList) wxTheBitmapList->AddBitmap(this);
 786 }
 787
 788 wxBitmap::wxBitmap( const char bits[], int width, int height, int WXUNUSED(depth))
 789 {
 790     m_refData = new wxBitmapRefData();
 791
 792     M_BMPDATA->m_mask = (wxMask *) NULL;
 793     M_BMPDATA->m_bitmap =
 794       gdk_bitmap_create_from_data( wxGetRootWindow()->window, (gchar *) bits, width, height );
 795     M_BMPDATA->m_width = width;
 796     M_BMPDATA->m_height = height;
 797     M_BMPDATA->m_bpp = 1;
 798
 799     wxCHECK_RET( M_BMPDATA->m_bitmap, wxT("couldn't create bitmap") );
 800
 801     if (wxTheBitmapList) wxTheBitmapList->AddBitmap(this);
 802 }
 803
 804 wxBitmap::~wxBitmap()
 805 {
 806     if (wxTheBitmapList) wxTheBitmapList->DeleteObject(this);
 807 }
 808
 809 wxBitmap& wxBitmap::operator = ( const wxBitmap& bmp )
 810 {
 811     if (*this == bmp) return (*this);
 812     Ref( bmp );
 813     return *this;
 814 }
 815
 816 bool wxBitmap::operator == ( const wxBitmap& bmp ) const
 817 {
 818     return m_refData == bmp.m_refData;
 819 }
 820
 821 bool wxBitmap::operator != ( const wxBitmap& bmp ) const
 822 {
 823     return m_refData != bmp.m_refData;
 824 }
 825
 826 bool wxBitmap::Ok() const
 827 {
 828     return (m_refData != NULL);
 829 }
 830
 831 int wxBitmap::GetHeight() const
 832 {
 833     wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
 834
 835     return M_BMPDATA->m_height;
 836 }
 837
 838 int wxBitmap::GetWidth() const
 839 {
 840     wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
 841
 842     return M_BMPDATA->m_width;
 843 }
 844
 845 int wxBitmap::GetDepth() const
 846 {
 847     wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
 848
 849     return M_BMPDATA->m_bpp;
 850 }
 851
 852 wxMask *wxBitmap::GetMask() const
 853 {
 854     wxCHECK_MSG( Ok(), (wxMask *) NULL, wxT("invalid bitmap") );
 855
 856     return M_BMPDATA->m_mask;
 857 }
 858
 859 void wxBitmap::SetMask( wxMask *mask )
 860 {
 861     wxCHECK_RET( Ok(), wxT("invalid bitmap") );
 862
 863     if (M_BMPDATA->m_mask) delete M_BMPDATA->m_mask;
 864
 865     M_BMPDATA->m_mask = mask;
 866 }
 867
 868 wxBitmap wxBitmap::GetSubBitmap( const wxRect& rect) const
 869 {
 870     wxCHECK_MSG( Ok() &&
 871                  (rect.x >= 0) && (rect.y >= 0) &&
 872                  (rect.x+rect.width <= M_BMPDATA->m_width) && (rect.y+rect.height <= M_BMPDATA->m_height),
 873                  wxNullBitmap, wxT("invalid bitmap or bitmap region") );
 874
 875     wxBitmap ret( rect.width, rect.height, M_BMPDATA->m_bpp );
 876     wxASSERT_MSG( ret.Ok(), wxT("GetSubBitmap error") );
 877
 878     if (ret.GetPixmap())
 879     {
 880         GdkGC *gc = gdk_gc_new( ret.GetPixmap() );
 881         gdk_draw_pixmap( ret.GetPixmap(), gc, GetPixmap(), rect.x, rect.y, 0, 0, rect.width, rect.height );
 882         gdk_gc_destroy( gc );
 883     }
 884     else
 885     {
 886         GdkGC *gc = gdk_gc_new( ret.GetBitmap() );
 887         gdk_wx_draw_bitmap( ret.GetBitmap(), gc, GetBitmap(), rect.x, rect.y, 0, 0, rect.width, rect.height );
 888         gdk_gc_destroy( gc );
 889     }
 890
 891     if (GetMask())
 892     {
 893         wxMask *mask = new wxMask;
 894         mask->m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, rect.width, rect.height, 1 );
 895
 896         GdkGC *gc = gdk_gc_new( mask->m_bitmap );
 897         gdk_wx_draw_bitmap( mask->m_bitmap, gc, M_BMPDATA->m_mask->m_bitmap, 0, 0, rect.x, rect.y, rect.width, rect.height );
 898         gdk_gc_destroy( gc );
 899
 900         ret.SetMask( mask );
 901     }
 902
 903     return ret;
 904 }
 905
 906 bool wxBitmap::SaveFile( const wxString &name, int type, wxPalette *WXUNUSED(palette) )
 907 {
 908     wxCHECK_MSG( Ok(), FALSE, wxT("invalid bitmap") );
 909
 910     // Try to save the bitmap via wxImage handlers:
 911     {
 912         wxImage image( *this );
 913         if (image.Ok()) return image.SaveFile( name, type );
 914     }
 915
 916     return FALSE;
 917 }
 918
 919 bool wxBitmap::LoadFile( const wxString &name, int type )
 920 {
 921     UnRef();
 922
 923     if (!wxFileExists(name)) return FALSE;
 924
 925     GdkVisual *visual = gdk_window_get_visual( wxGetRootWindow()->window );
 926     wxASSERT( visual );
 927
 928     if (type == wxBITMAP_TYPE_XPM)
 929     {
 930         m_refData = new wxBitmapRefData();
 931
 932         GdkBitmap *mask = (GdkBitmap*) NULL;
 933
 934         M_BMPDATA->m_pixmap = gdk_pixmap_create_from_xpm( wxGetRootWindow()->window, &mask, NULL, name.fn_str() );
 935
 936         if (mask)
 937         {
 938            M_BMPDATA->m_mask = new wxMask();
 939            M_BMPDATA->m_mask->m_bitmap = mask;
 940         }
 941
 942         gdk_window_get_size( M_BMPDATA->m_pixmap, &(M_BMPDATA->m_width), &(M_BMPDATA->m_height) );
 943
 944         M_BMPDATA->m_bpp = visual->depth;
 945     }
 946     else // try if wxImage can load it
 947     {
 948         wxImage image;
 949         if (!image.LoadFile( name, type )) return FALSE;
 950         if (image.Ok()) *this = image.ConvertToBitmap();
 951         else return FALSE;
 952     }
 953
 954     return TRUE;
 955 }
 956
 957 wxPalette *wxBitmap::GetPalette() const
 958 {
 959     if (!Ok()) return (wxPalette *) NULL;
 960
 961     return M_BMPDATA->m_palette;
 962 }
 963
 964 void wxBitmap::SetHeight( int height )
 965 {
 966     if (!m_refData) m_refData = new wxBitmapRefData();
 967
 968     M_BMPDATA->m_height = height;
 969 }
 970
 971 void wxBitmap::SetWidth( int width )
 972 {
 973     if (!m_refData) m_refData = new wxBitmapRefData();
 974
 975     M_BMPDATA->m_width = width;
 976 }
 977
 978 void wxBitmap::SetDepth( int depth )
 979 {
 980     if (!m_refData) m_refData = new wxBitmapRefData();
 981
 982     M_BMPDATA->m_bpp = depth;
 983 }
 984
 985 void wxBitmap::SetPixmap( GdkPixmap *pixmap )
 986 {
 987     if (!m_refData) m_refData = new wxBitmapRefData();
 988
 989     M_BMPDATA->m_pixmap = pixmap;
 990 }
 991
 992 void wxBitmap::SetBitmap( GdkPixmap *bitmap )
 993 {
 994     if (!m_refData) m_refData = new wxBitmapRefData();
 995
 996     M_BMPDATA->m_bitmap = bitmap;
 997 }
 998
 999 GdkPixmap *wxBitmap::GetPixmap() const
1000 {
1001     wxCHECK_MSG( Ok(), (GdkPixmap *) NULL, wxT("invalid bitmap") );
1002
1003     return M_BMPDATA->m_pixmap;
1004 }
1005
1006 GdkBitmap *wxBitmap::GetBitmap() const
1007 {
1008     wxCHECK_MSG( Ok(), (GdkBitmap *) NULL, wxT("invalid bitmap") );
1009
1010     return M_BMPDATA->m_bitmap;
1011 }