src/gtk1/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 #ifdef __WXGTK20__
  25     // need this to get gdk_image_new_bitmap()
  26     #define GDK_ENABLE_BROKEN
  27 #endif
  28
  29 #include <gdk/gdk.h>
  30 #include <gtk/gtk.h>
  31 #include <gdk/gdkx.h>
  32
  33 #ifdef __WXGTK20__
  34     #include <gdk/gdkimage.h>
  35 #else // GTK+ 1.2
  36     // VZ: is this still needed? seems to compile fine without it...
  37     #if (GTK_MINOR_VERSION > 0)
  38         #include <gdk/gdkrgb.h>
  39     #endif
  40 #endif // GTK+ 2.0/1.2
  41
  42 extern void gdk_wx_draw_bitmap     (GdkDrawable  *drawable,
  43                           GdkGC               *gc,
  44                           GdkDrawable  *src,
  45                           gint                xsrc,
  46                           gint                ysrc,
  47                           gint                xdest,
  48                           gint                ydest,
  49                           gint                width,
  50                           gint                height);
  51
  52 //-----------------------------------------------------------------------------
  53 // data
  54 //-----------------------------------------------------------------------------
  55
  56 extern GtkWidget *wxGetRootWindow();
  57
  58 //-----------------------------------------------------------------------------
  59 // wxMask
  60 //-----------------------------------------------------------------------------
  61
  62 IMPLEMENT_DYNAMIC_CLASS(wxMask,wxObject)
  63
  64 wxMask::wxMask()
  65 {
  66     m_bitmap = (GdkBitmap *) NULL;
  67 }
  68
  69 wxMask::wxMask( const wxBitmap& bitmap, const wxColour& colour )
  70 {
  71     m_bitmap = (GdkBitmap *) NULL;
  72     Create( bitmap, colour );
  73 }
  74
  75 wxMask::wxMask( const wxBitmap& bitmap, int paletteIndex )
  76 {
  77     m_bitmap = (GdkBitmap *) NULL;
  78     Create( bitmap, paletteIndex );
  79 }
  80
  81 wxMask::wxMask( const wxBitmap& bitmap )
  82 {
  83     m_bitmap = (GdkBitmap *) NULL;
  84     Create( bitmap );
  85 }
  86
  87 wxMask::~wxMask()
  88 {
  89     if (m_bitmap)
  90         gdk_bitmap_unref( m_bitmap );
  91 }
  92
  93 bool wxMask::Create( const wxBitmap& bitmap,
  94                      const wxColour& colour )
  95 {
  96     if (m_bitmap)
  97     {
  98         gdk_bitmap_unref( m_bitmap );
  99         m_bitmap = (GdkBitmap*) NULL;
 100     }
 101
 102     wxImage image = bitmap.ConvertToImage();
 103     if (!image.Ok()) return FALSE;
 104
 105     m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, image.GetWidth(), image.GetHeight(), 1 );
 106     GdkGC *gc = gdk_gc_new( m_bitmap );
 107
 108     GdkColor color;
 109     color.red = 65000;
 110     color.green = 65000;
 111     color.blue = 65000;
 112     color.pixel = 1;
 113     gdk_gc_set_foreground( gc, &color );
 114     gdk_gc_set_fill( gc, GDK_SOLID );
 115     gdk_draw_rectangle( m_bitmap, gc, TRUE, 0, 0, image.GetWidth(), image.GetHeight() );
 116
 117     unsigned char *data = image.GetData();
 118     int index = 0;
 119
 120     unsigned char red = colour.Red();
 121     unsigned char green = colour.Green();
 122     unsigned char blue = colour.Blue();
 123
 124     GdkVisual *visual = wxTheApp->GetGdkVisual();
 125
 126     int bpp = visual->depth;
 127     if ((bpp == 16) && (visual->red_mask != 0xf800)) bpp = 15;
 128     if (bpp == 15)
 129     {
 130         red = red & 0xf8;
 131         green = green & 0xf8;
 132         blue = blue & 0xf8;
 133     } else
 134     if (bpp == 16)
 135     {
 136         red = red & 0xf8;
 137         green = green & 0xfc;
 138         blue = blue & 0xf8;
 139     } else
 140     if (bpp == 12)
 141     {
 142         red = red & 0xf0;
 143         green = green & 0xf0;
 144         blue = blue & 0xf0;
 145     }
 146
 147     color.red = 0;
 148     color.green = 0;
 149     color.blue = 0;
 150     color.pixel = 0;
 151     gdk_gc_set_foreground( gc, &color );
 152
 153     for (int j = 0; j < image.GetHeight(); j++)
 154     {
 155         int start_x = -1;
 156         int i;
 157         for (i = 0; i < image.GetWidth(); i++)
 158         {
 159             if ((data[index] == red) &&
 160                 (data[index+1] == green) &&
 161                 (data[index+2] == blue))
 162             {
 163                 if (start_x == -1)
 164                 start_x = i;
 165             }
 166             else
 167             {
 168                 if (start_x != -1)
 169                 {
 170                     gdk_draw_line( m_bitmap, gc, start_x, j, i-1, j );
 171                     start_x = -1;
 172                 }
 173             }
 174             index += 3;
 175         }
 176         if (start_x != -1)
 177             gdk_draw_line( m_bitmap, gc, start_x, j, i, j );
 178     }
 179
 180     gdk_gc_unref( gc );
 181
 182     return TRUE;
 183 }
 184
 185 bool wxMask::Create( const wxBitmap& bitmap, int paletteIndex )
 186 {
 187     unsigned char r,g,b;
 188     wxPalette *pal = bitmap.GetPalette();
 189
 190     wxCHECK_MSG( pal, FALSE, wxT("Cannot create mask from bitmap without palette") );
 191
 192     pal->GetRGB(paletteIndex, &r, &g, &b);
 193
 194     return Create(bitmap, wxColour(r, g, b));
 195 }
 196
 197 bool wxMask::Create( const wxBitmap& bitmap )
 198 {
 199     if (m_bitmap)
 200     {
 201         gdk_bitmap_unref( m_bitmap );
 202         m_bitmap = (GdkBitmap*) NULL;
 203     }
 204
 205     if (!bitmap.Ok()) return FALSE;
 206
 207     wxCHECK_MSG( bitmap.GetBitmap(), FALSE, wxT("Cannot create mask from colour bitmap") );
 208
 209     m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, bitmap.GetWidth(), bitmap.GetHeight(), 1 );
 210
 211     if (!m_bitmap) return FALSE;
 212
 213     GdkGC *gc = gdk_gc_new( m_bitmap );
 214
 215     gdk_wx_draw_bitmap( m_bitmap, gc, bitmap.GetBitmap(), 0, 0, 0, 0, bitmap.GetWidth(), bitmap.GetHeight() );
 216
 217     gdk_gc_unref( gc );
 218
 219     return TRUE;
 220 }
 221
 222 GdkBitmap *wxMask::GetBitmap() const
 223 {
 224     return m_bitmap;
 225 }
 226
 227 //-----------------------------------------------------------------------------
 228 // wxBitmap
 229 //-----------------------------------------------------------------------------
 230
 231 class wxBitmapRefData: public wxObjectRefData
 232 {
 233 public:
 234     wxBitmapRefData();
 235     ~wxBitmapRefData();
 236
 237     GdkPixmap      *m_pixmap;
 238     GdkBitmap      *m_bitmap;
 239     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_mask = (wxMask *) NULL;
 251     m_width = 0;
 252     m_height = 0;
 253     m_bpp = 0;
 254     m_palette = (wxPalette *) NULL;
 255 }
 256
 257 wxBitmapRefData::~wxBitmapRefData()
 258 {
 259     if (m_pixmap) gdk_pixmap_unref( m_pixmap );
 260     if (m_bitmap) gdk_bitmap_unref( m_bitmap );
 261     if (m_mask) delete m_mask;
 262     if (m_palette) delete m_palette;
 263 }
 264
 265 //-----------------------------------------------------------------------------
 266
 267 #define M_BMPDATA ((wxBitmapRefData *)m_refData)
 268
 269 IMPLEMENT_DYNAMIC_CLASS(wxBitmap,wxGDIObject)
 270
 271 wxBitmap::wxBitmap()
 272 {
 273 }
 274
 275 wxBitmap::wxBitmap( int width, int height, int depth )
 276 {
 277     Create( width, height, depth );
 278 }
 279
 280 bool wxBitmap::Create( int width, int height, int depth )
 281 {
 282     UnRef();
 283
 284     wxCHECK_MSG( (width > 0) && (height > 0), FALSE, wxT("invalid bitmap size") )
 285
 286     GdkVisual *visual = wxTheApp->GetGdkVisual();
 287
 288     if (depth == -1) depth = visual->depth;
 289
 290     wxCHECK_MSG( (depth == visual->depth) ||
 291                  (depth == 1), FALSE, wxT("invalid bitmap depth") )
 292
 293     m_refData = new wxBitmapRefData();
 294     M_BMPDATA->m_mask = (wxMask *) NULL;
 295     M_BMPDATA->m_width = width;
 296     M_BMPDATA->m_height = height;
 297     if (depth == 1)
 298     {
 299         M_BMPDATA->m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, width, height, 1 );
 300         M_BMPDATA->m_bpp = 1;
 301     }
 302     else
 303     {
 304         M_BMPDATA->m_pixmap = gdk_pixmap_new( wxGetRootWindow()->window, width, height, depth );
 305         M_BMPDATA->m_bpp = visual->depth;
 306     }
 307
 308     return Ok();
 309 }
 310
 311 bool wxBitmap::CreateFromXpm( const char **bits )
 312 {
 313     UnRef();
 314
 315     wxCHECK_MSG( bits != NULL, FALSE, wxT("invalid bitmap data") )
 316
 317     GdkVisual *visual = wxTheApp->GetGdkVisual();
 318
 319     m_refData = new wxBitmapRefData();
 320
 321     GdkBitmap *mask = (GdkBitmap*) NULL;
 322
 323     M_BMPDATA->m_pixmap = gdk_pixmap_create_from_xpm_d( wxGetRootWindow()->window, &mask, NULL, (gchar **) bits );
 324
 325     wxCHECK_MSG( M_BMPDATA->m_pixmap, FALSE, wxT("couldn't create pixmap") );
 326
 327     if (mask)
 328     {
 329         M_BMPDATA->m_mask = new wxMask();
 330         M_BMPDATA->m_mask->m_bitmap = mask;
 331     }
 332
 333     gdk_window_get_size( M_BMPDATA->m_pixmap, &(M_BMPDATA->m_width), &(M_BMPDATA->m_height) );
 334
 335     M_BMPDATA->m_bpp = visual->depth;  // ?
 336
 337     return TRUE;
 338 }
 339
 340 bool wxBitmap::CreateFromImage( const wxImage& image, int depth )
 341 {
 342     UnRef();
 343
 344     wxCHECK_MSG( image.Ok(), FALSE, wxT("invalid image") )
 345     wxCHECK_MSG( depth == -1 || depth == 1, FALSE, wxT("invalid bitmap depth") )
 346
 347     m_refData = new wxBitmapRefData();
 348
 349     // ------
 350     // convertion to mono bitmap:
 351     // ------
 352     if (depth == 1)
 353     {
 354         int width = image.GetWidth();
 355         int height = image.GetHeight();
 356
 357         SetHeight( height );
 358         SetWidth( width );
 359
 360         SetBitmap( gdk_pixmap_new( wxGetRootWindow()->window, width, height, 1 ) );
 361
 362         SetDepth( 1 );
 363
 364         GdkVisual *visual = wxTheApp->GetGdkVisual();
 365
 366         // Create picture image
 367
 368         unsigned char *data_data = (unsigned char*)malloc( ((width >> 3)+8) * height );
 369
 370         GdkImage *data_image =
 371             gdk_image_new_bitmap( visual, data_data, width, height );
 372
 373         // Create mask image
 374
 375         GdkImage *mask_image = (GdkImage*) NULL;
 376
 377         if (image.HasMask())
 378         {
 379             unsigned char *mask_data = (unsigned char*)malloc( ((width >> 3)+8) * height );
 380
 381             mask_image =  gdk_image_new_bitmap( visual, mask_data, width, height );
 382
 383             wxMask *mask = new wxMask();
 384             mask->m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, width, height, 1 );
 385
 386             SetMask( mask );
 387         }
 388
 389         int r_mask = image.GetMaskRed();
 390         int g_mask = image.GetMaskGreen();
 391         int b_mask = image.GetMaskBlue();
 392
 393         unsigned char* data = image.GetData();
 394
 395         int index = 0;
 396         for (int y = 0; y < height; y++)
 397         {
 398             for (int x = 0; x < width; x++)
 399             {
 400                 int r = data[index];
 401                 index++;
 402                 int g = data[index];
 403                 index++;
 404                 int b = data[index];
 405                 index++;
 406
 407                 if (image.HasMask())
 408                 {
 409                     if ((r == r_mask) && (b == b_mask) && (g == g_mask))
 410                         gdk_image_put_pixel( mask_image, x, y, 1 );
 411                     else
 412                         gdk_image_put_pixel( mask_image, x, y, 0 );
 413                 }
 414
 415                 if ((r == 255) && (b == 255) && (g == 255))
 416                     gdk_image_put_pixel( data_image, x, y, 1 );
 417                 else
 418                     gdk_image_put_pixel( data_image, x, y, 0 );
 419
 420             } // for
 421         }  // for
 422
 423         // Blit picture
 424
 425         GdkGC *data_gc = gdk_gc_new( GetBitmap() );
 426
 427         gdk_draw_image( GetBitmap(), data_gc, data_image, 0, 0, 0, 0, width, height );
 428
 429         gdk_image_destroy( data_image );
 430         gdk_gc_unref( data_gc );
 431
 432         // Blit mask
 433
 434         if (image.HasMask())
 435         {
 436             GdkGC *mask_gc = gdk_gc_new( GetMask()->GetBitmap() );
 437
 438             gdk_draw_image( GetMask()->GetBitmap(), mask_gc, mask_image, 0, 0, 0, 0, width, height );
 439
 440             gdk_image_destroy( mask_image );
 441             gdk_gc_unref( mask_gc );
 442         }
 443     }
 444
 445     // ------
 446     // convertion to colour bitmap:
 447     // ------
 448     else
 449     {
 450         int width = image.GetWidth();
 451         int height = image.GetHeight();
 452
 453         SetHeight( height );
 454         SetWidth( width );
 455
 456         SetPixmap( gdk_pixmap_new( wxGetRootWindow()->window, width, height, -1 ) );
 457
 458         GdkVisual *visual = wxTheApp->GetGdkVisual();
 459
 460         int bpp = visual->depth;
 461
 462         SetDepth( bpp );
 463
 464         if ((bpp == 16) && (visual->red_mask != 0xf800)) bpp = 15;
 465         if (bpp < 8) bpp = 8;
 466
 467         // We handle 8-bit bitmaps ourselves using the colour cube, 12-bit
 468         // visuals are not supported by GDK so we do these ourselves, too.
 469         // 15-bit and 16-bit should actually work and 24-bit certainly does.
 470 #ifdef __sgi
 471         if (!image.HasMask() && (bpp > 16))
 472 #else
 473         if (!image.HasMask() && (bpp > 12))
 474 #endif
 475         {
 476             static bool s_hasInitialized = FALSE;
 477
 478             if (!s_hasInitialized)
 479             {
 480                 gdk_rgb_init();
 481                 s_hasInitialized = TRUE;
 482             }
 483
 484             GdkGC *gc = gdk_gc_new( GetPixmap() );
 485
 486             gdk_draw_rgb_image( GetPixmap(),
 487                                 gc,
 488                                 0, 0,
 489                                 width, height,
 490                                 GDK_RGB_DITHER_NONE,
 491                                 image.GetData(),
 492                                 width*3 );
 493
 494             gdk_gc_unref( gc );
 495             return TRUE;
 496         }
 497
 498         // Create picture image
 499
 500         GdkImage *data_image =
 501             gdk_image_new( GDK_IMAGE_FASTEST, visual, width, height );
 502
 503         // Create mask image
 504
 505         GdkImage *mask_image = (GdkImage*) NULL;
 506
 507         if (image.HasMask())
 508         {
 509             unsigned char *mask_data = (unsigned char*)malloc( ((width >> 3)+8) * height );
 510
 511             mask_image =  gdk_image_new_bitmap( visual, mask_data, width, height );
 512
 513             wxMask *mask = new wxMask();
 514             mask->m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, width, height, 1 );
 515
 516             SetMask( mask );
 517         }
 518
 519         // Render
 520
 521         enum byte_order { RGB, RBG, BRG, BGR, GRB, GBR };
 522         byte_order b_o = RGB;
 523
 524         if (bpp > 8)
 525         {
 526             if ((visual->red_mask > visual->green_mask) && (visual->green_mask > visual->blue_mask))      b_o = RGB;
 527             else if ((visual->red_mask > visual->blue_mask) && (visual->blue_mask > visual->green_mask))  b_o = RBG;
 528             else if ((visual->blue_mask > visual->red_mask) && (visual->red_mask > visual->green_mask))   b_o = BRG;
 529             else if ((visual->blue_mask > visual->green_mask) && (visual->green_mask > visual->red_mask)) b_o = BGR;
 530             else if ((visual->green_mask > visual->red_mask) && (visual->red_mask > visual->blue_mask))   b_o = GRB;
 531             else if ((visual->green_mask > visual->blue_mask) && (visual->blue_mask > visual->red_mask))  b_o = GBR;
 532         }
 533
 534         int r_mask = image.GetMaskRed();
 535         int g_mask = image.GetMaskGreen();
 536         int b_mask = image.GetMaskBlue();
 537
 538         unsigned char* data = image.GetData();
 539
 540         int index = 0;
 541         for (int y = 0; y < height; y++)
 542         {
 543             for (int x = 0; x < width; x++)
 544             {
 545                 int r = data[index];
 546                 index++;
 547                 int g = data[index];
 548                 index++;
 549                 int b = data[index];
 550                 index++;
 551
 552                 if (image.HasMask())
 553                 {
 554                     if ((r == r_mask) && (b == b_mask) && (g == g_mask))
 555                         gdk_image_put_pixel( mask_image, x, y, 1 );
 556                     else
 557                         gdk_image_put_pixel( mask_image, x, y, 0 );
 558                 }
 559
 560                 switch (bpp)
 561                 {
 562                     case 8:
 563                     {
 564                         int pixel = -1;
 565                         if (wxTheApp->m_colorCube)
 566                         {
 567                             pixel = wxTheApp->m_colorCube[ ((r & 0xf8) << 7) + ((g & 0xf8) << 2) + ((b & 0xf8) >> 3) ];
 568                         }
 569                         else
 570                         {
 571                             GdkColormap *cmap = gtk_widget_get_default_colormap();
 572                             GdkColor *colors = cmap->colors;
 573                             int max = 3 * (65536);
 574
 575                             for (int i = 0; i < cmap->size; i++)
 576                             {
 577                                 int rdiff = (r << 8) - colors[i].red;
 578                                 int gdiff = (g << 8) - colors[i].green;
 579                                 int bdiff = (b << 8) - colors[i].blue;
 580                                 int sum = ABS (rdiff) + ABS (gdiff) + ABS (bdiff);
 581                                 if (sum < max) { pixel = i; max = sum; }
 582                             }
 583                         }
 584
 585                         gdk_image_put_pixel( data_image, x, y, pixel );
 586
 587                         break;
 588                     }
 589                     case 12:  // SGI only
 590                     {
 591                         guint32 pixel = 0;
 592                         switch (b_o)
 593                         {
 594                             case RGB: pixel = ((r & 0xf0) << 4) | (g & 0xf0) | ((b & 0xf0) >> 4); break;
 595                             case RBG: pixel = ((r & 0xf0) << 4) | (b & 0xf0) | ((g & 0xf0) >> 4); break;
 596                             case GRB: pixel = ((g & 0xf0) << 4) | (r & 0xf0) | ((b & 0xf0) >> 4); break;
 597                             case GBR: pixel = ((g & 0xf0) << 4) | (b & 0xf0) | ((r & 0xf0) >> 4); break;
 598                             case BRG: pixel = ((b & 0xf0) << 4) | (r & 0xf0) | ((g & 0xf0) >> 4); break;
 599                             case BGR: pixel = ((b & 0xf0) << 4) | (g & 0xf0) | ((r & 0xf0) >> 4); break;
 600                         }
 601                         gdk_image_put_pixel( data_image, x, y, pixel );
 602                         break;
 603                     }
 604                     case 15:
 605                     {
 606                         guint32 pixel = 0;
 607                         switch (b_o)
 608                         {
 609                             case RGB: pixel = ((r & 0xf8) << 7) | ((g & 0xf8) << 2) | ((b & 0xf8) >> 3); break;
 610                             case RBG: pixel = ((r & 0xf8) << 7) | ((b & 0xf8) << 2) | ((g & 0xf8) >> 3); break;
 611                             case GRB: pixel = ((g & 0xf8) << 7) | ((r & 0xf8) << 2) | ((b & 0xf8) >> 3); break;
 612                             case GBR: pixel = ((g & 0xf8) << 7) | ((b & 0xf8) << 2) | ((r & 0xf8) >> 3); break;
 613                             case BRG: pixel = ((b & 0xf8) << 7) | ((r & 0xf8) << 2) | ((g & 0xf8) >> 3); break;
 614                             case BGR: pixel = ((b & 0xf8) << 7) | ((g & 0xf8) << 2) | ((r & 0xf8) >> 3); break;
 615                         }
 616                         gdk_image_put_pixel( data_image, x, y, pixel );
 617                         break;
 618                     }
 619                     case 16:
 620                     {
 621                         // I actually don't know if for 16-bit displays, it is alway the green
 622                         // component or the second component which has 6 bits.
 623                         guint32 pixel = 0;
 624                         switch (b_o)
 625                         {
 626                             case RGB: pixel = ((r & 0xf8) << 8) | ((g & 0xfc) << 3) | ((b & 0xf8) >> 3); break;
 627                             case RBG: pixel = ((r & 0xf8) << 8) | ((b & 0xfc) << 3) | ((g & 0xf8) >> 3); break;
 628                             case GRB: pixel = ((g & 0xf8) << 8) | ((r & 0xfc) << 3) | ((b & 0xf8) >> 3); break;
 629                             case GBR: pixel = ((g & 0xf8) << 8) | ((b & 0xfc) << 3) | ((r & 0xf8) >> 3); break;
 630                             case BRG: pixel = ((b & 0xf8) << 8) | ((r & 0xfc) << 3) | ((g & 0xf8) >> 3); break;
 631                             case BGR: pixel = ((b & 0xf8) << 8) | ((g & 0xfc) << 3) | ((r & 0xf8) >> 3); break;
 632                         }
 633                         gdk_image_put_pixel( data_image, x, y, pixel );
 634                         break;
 635                     }
 636                     case 32:
 637                     case 24:
 638                     {
 639                         guint32 pixel = 0;
 640                         switch (b_o)
 641                         {
 642                             case RGB: pixel = (r << 16) | (g << 8) | b; break;
 643                             case RBG: pixel = (r << 16) | (b << 8) | g; break;
 644                             case BRG: pixel = (b << 16) | (r << 8) | g; break;
 645                             case BGR: pixel = (b << 16) | (g << 8) | r; break;
 646                             case GRB: pixel = (g << 16) | (r << 8) | b; break;
 647                             case GBR: pixel = (g << 16) | (b << 8) | r; break;
 648                         }
 649                         gdk_image_put_pixel( data_image, x, y, pixel );
 650                     }
 651                     default: break;
 652                 }
 653             } // for
 654         }  // for
 655
 656         // Blit picture
 657
 658         GdkGC *data_gc = gdk_gc_new( GetPixmap() );
 659
 660         gdk_draw_image( GetPixmap(), data_gc, data_image, 0, 0, 0, 0, width, height );
 661
 662         gdk_image_destroy( data_image );
 663         gdk_gc_unref( data_gc );
 664
 665         // Blit mask
 666
 667         if (image.HasMask())
 668         {
 669             GdkGC *mask_gc = gdk_gc_new( GetMask()->GetBitmap() );
 670
 671             gdk_draw_image( GetMask()->GetBitmap(), mask_gc, mask_image, 0, 0, 0, 0, width, height );
 672
 673             gdk_image_destroy( mask_image );
 674             gdk_gc_unref( mask_gc );
 675         }
 676     }
 677
 678     return TRUE;
 679 }
 680
 681 wxImage wxBitmap::ConvertToImage() const
 682 {
 683     wxImage image;
 684
 685     wxCHECK_MSG( Ok(), wxNullImage, wxT("invalid bitmap") );
 686
 687     GdkImage *gdk_image = (GdkImage*) NULL;
 688     if (GetPixmap())
 689     {
 690         gdk_image = gdk_image_get( GetPixmap(),
 691             0, 0,
 692             GetWidth(), GetHeight() );
 693     } else
 694     if (GetBitmap())
 695     {
 696         gdk_image = gdk_image_get( GetBitmap(),
 697             0, 0,
 698             GetWidth(), GetHeight() );
 699     } else
 700     {
 701         wxFAIL_MSG( wxT("Ill-formed bitmap") );
 702     }
 703
 704     wxCHECK_MSG( gdk_image, wxNullImage, wxT("couldn't create image") );
 705
 706     image.Create( GetWidth(), GetHeight() );
 707     char unsigned *data = image.GetData();
 708
 709     if (!data)
 710     {
 711         gdk_image_destroy( gdk_image );
 712         wxFAIL_MSG( wxT("couldn't create image") );
 713         return wxNullImage;
 714     }
 715
 716     GdkImage *gdk_image_mask = (GdkImage*) NULL;
 717     if (GetMask())
 718     {
 719         gdk_image_mask = gdk_image_get( GetMask()->GetBitmap(),
 720             0, 0,
 721             GetWidth(), GetHeight() );
 722
 723         image.SetMaskColour( 16, 16, 16 );  // anything unlikely and dividable
 724     }
 725
 726     int bpp = -1;
 727     int red_shift_right = 0;
 728     int green_shift_right = 0;
 729     int blue_shift_right = 0;
 730     int red_shift_left = 0;
 731     int green_shift_left = 0;
 732     int blue_shift_left = 0;
 733     bool use_shift = FALSE;
 734
 735     if (GetPixmap())
 736     {
 737         GdkVisual *visual = gdk_window_get_visual( GetPixmap() );
 738         if (visual == NULL)
 739             visual = wxTheApp->GetGdkVisual();
 740
 741         bpp = visual->depth;
 742         if (bpp == 16) bpp = visual->red_prec + visual->green_prec + visual->blue_prec;
 743         red_shift_right = visual->red_shift;
 744         red_shift_left = 8-visual->red_prec;
 745         green_shift_right = visual->green_shift;
 746         green_shift_left = 8-visual->green_prec;
 747         blue_shift_right = visual->blue_shift;
 748         blue_shift_left = 8-visual->blue_prec;
 749
 750         use_shift = (visual->type == GDK_VISUAL_TRUE_COLOR) || (visual->type == GDK_VISUAL_DIRECT_COLOR);
 751     }
 752     if (GetBitmap())
 753     {
 754         bpp = 1;
 755     }
 756
 757
 758     GdkColormap *cmap = gtk_widget_get_default_colormap();
 759
 760     long pos = 0;
 761     for (int j = 0; j < GetHeight(); j++)
 762     {
 763         for (int i = 0; i < GetWidth(); i++)
 764         {
 765             wxUint32 pixel = gdk_image_get_pixel( gdk_image, i, j );
 766             if (bpp == 1)
 767             {
 768                 if (pixel == 0)
 769                 {
 770                     data[pos]   = 0;
 771                     data[pos+1] = 0;
 772                     data[pos+2] = 0;
 773                 }
 774                 else
 775                 {
 776                     data[pos]   = 255;
 777                     data[pos+1] = 255;
 778                     data[pos+2] = 255;
 779                 }
 780             }
 781             else if (use_shift)
 782             {
 783                 data[pos] =   (pixel >> red_shift_right)   << red_shift_left;
 784                 data[pos+1] = (pixel >> green_shift_right) << green_shift_left;
 785                 data[pos+2] = (pixel >> blue_shift_right)  << blue_shift_left;
 786             }
 787             else if (cmap->colors)
 788             {
 789                 data[pos] =   cmap->colors[pixel].red   >> 8;
 790                 data[pos+1] = cmap->colors[pixel].green >> 8;
 791                 data[pos+2] = cmap->colors[pixel].blue  >> 8;
 792             }
 793             else
 794             {
 795                 wxFAIL_MSG( wxT("Image conversion failed. Unknown visual type.") );
 796             }
 797
 798             if (gdk_image_mask)
 799             {
 800                 int mask_pixel = gdk_image_get_pixel( gdk_image_mask, i, j );
 801                 if (mask_pixel == 0)
 802                 {
 803                     data[pos] = 16;
 804                     data[pos+1] = 16;
 805                     data[pos+2] = 16;
 806                 }
 807             }
 808
 809             pos += 3;
 810         }
 811     }
 812
 813     gdk_image_destroy( gdk_image );
 814     if (gdk_image_mask) gdk_image_destroy( gdk_image_mask );
 815
 816     return image;
 817 }
 818
 819 wxBitmap::wxBitmap( const wxBitmap& bmp )
 820 {
 821     Ref( bmp );
 822 }
 823
 824 wxBitmap::wxBitmap( const wxString &filename, int type )
 825 {
 826     LoadFile( filename, type );
 827 }
 828
 829 wxBitmap::wxBitmap( const char bits[], int width, int height, int WXUNUSED(depth))
 830 {
 831     m_refData = new wxBitmapRefData();
 832
 833     M_BMPDATA->m_mask = (wxMask *) NULL;
 834     M_BMPDATA->m_bitmap =
 835       gdk_bitmap_create_from_data( wxGetRootWindow()->window, (gchar *) bits, width, height );
 836     M_BMPDATA->m_width = width;
 837     M_BMPDATA->m_height = height;
 838     M_BMPDATA->m_bpp = 1;
 839
 840     wxCHECK_RET( M_BMPDATA->m_bitmap, wxT("couldn't create bitmap") );
 841 }
 842
 843 wxBitmap::~wxBitmap()
 844 {
 845 }
 846
 847 wxBitmap& wxBitmap::operator = ( const wxBitmap& bmp )
 848 {
 849     if ( m_refData != bmp.m_refData )
 850         Ref( bmp );
 851
 852     return *this;
 853 }
 854
 855 bool wxBitmap::operator == ( const wxBitmap& bmp ) const
 856 {
 857     return m_refData == bmp.m_refData;
 858 }
 859
 860 bool wxBitmap::operator != ( const wxBitmap& bmp ) const
 861 {
 862     return m_refData != bmp.m_refData;
 863 }
 864
 865 bool wxBitmap::Ok() const
 866 {
 867     return (m_refData != NULL);
 868 }
 869
 870 int wxBitmap::GetHeight() const
 871 {
 872     wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
 873
 874     return M_BMPDATA->m_height;
 875 }
 876
 877 int wxBitmap::GetWidth() const
 878 {
 879     wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
 880
 881     return M_BMPDATA->m_width;
 882 }
 883
 884 int wxBitmap::GetDepth() const
 885 {
 886     wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
 887
 888     return M_BMPDATA->m_bpp;
 889 }
 890
 891 wxMask *wxBitmap::GetMask() const
 892 {
 893     wxCHECK_MSG( Ok(), (wxMask *) NULL, wxT("invalid bitmap") );
 894
 895     return M_BMPDATA->m_mask;
 896 }
 897
 898 void wxBitmap::SetMask( wxMask *mask )
 899 {
 900     wxCHECK_RET( Ok(), wxT("invalid bitmap") );
 901
 902     if (M_BMPDATA->m_mask) delete M_BMPDATA->m_mask;
 903
 904     M_BMPDATA->m_mask = mask;
 905 }
 906
 907 bool wxBitmap::CopyFromIcon(const wxIcon& icon)
 908 {
 909     *this = icon;
 910     return TRUE;
 911 }
 912
 913 wxBitmap wxBitmap::GetSubBitmap( const wxRect& rect) const
 914 {
 915     wxCHECK_MSG( Ok() &&
 916                  (rect.x >= 0) && (rect.y >= 0) &&
 917                  (rect.x+rect.width <= M_BMPDATA->m_width) && (rect.y+rect.height <= M_BMPDATA->m_height),
 918                  wxNullBitmap, wxT("invalid bitmap or bitmap region") );
 919
 920     wxBitmap ret( rect.width, rect.height, M_BMPDATA->m_bpp );
 921     wxASSERT_MSG( ret.Ok(), wxT("GetSubBitmap error") );
 922
 923     if (ret.GetPixmap())
 924     {
 925         GdkGC *gc = gdk_gc_new( ret.GetPixmap() );
 926         gdk_draw_pixmap( ret.GetPixmap(), gc, GetPixmap(), rect.x, rect.y, 0, 0, rect.width, rect.height );
 927         gdk_gc_destroy( gc );
 928     }
 929     else
 930     {
 931         GdkGC *gc = gdk_gc_new( ret.GetBitmap() );
 932         gdk_wx_draw_bitmap( ret.GetBitmap(), gc, GetBitmap(), rect.x, rect.y, 0, 0, rect.width, rect.height );
 933         gdk_gc_destroy( gc );
 934     }
 935
 936     if (GetMask())
 937     {
 938         wxMask *mask = new wxMask;
 939         mask->m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, rect.width, rect.height, 1 );
 940
 941         GdkGC *gc = gdk_gc_new( mask->m_bitmap );
 942         gdk_wx_draw_bitmap( mask->m_bitmap, gc, M_BMPDATA->m_mask->m_bitmap, 0, 0, rect.x, rect.y, rect.width, rect.height );
 943         gdk_gc_destroy( gc );
 944
 945         ret.SetMask( mask );
 946     }
 947
 948     return ret;
 949 }
 950
 951 bool wxBitmap::SaveFile( const wxString &name, int type, wxPalette *WXUNUSED(palette) )
 952 {
 953     wxCHECK_MSG( Ok(), FALSE, wxT("invalid bitmap") );
 954
 955     // Try to save the bitmap via wxImage handlers:
 956     {
 957         wxImage image = ConvertToImage();
 958         if (image.Ok()) return image.SaveFile( name, type );
 959     }
 960
 961     return FALSE;
 962 }
 963
 964 bool wxBitmap::LoadFile( const wxString &name, int type )
 965 {
 966     UnRef();
 967
 968     if (!wxFileExists(name)) return FALSE;
 969
 970     GdkVisual *visual = wxTheApp->GetGdkVisual();
 971
 972     if (type == wxBITMAP_TYPE_XPM)
 973     {
 974         m_refData = new wxBitmapRefData();
 975
 976         GdkBitmap *mask = (GdkBitmap*) NULL;
 977
 978         M_BMPDATA->m_pixmap = gdk_pixmap_create_from_xpm( wxGetRootWindow()->window, &mask, NULL, name.fn_str() );
 979
 980         if (mask)
 981         {
 982            M_BMPDATA->m_mask = new wxMask();
 983            M_BMPDATA->m_mask->m_bitmap = mask;
 984         }
 985
 986         gdk_window_get_size( M_BMPDATA->m_pixmap, &(M_BMPDATA->m_width), &(M_BMPDATA->m_height) );
 987
 988         M_BMPDATA->m_bpp = visual->depth;
 989     }
 990     else // try if wxImage can load it
 991     {
 992         wxImage image;
 993         if (!image.LoadFile( name, type )) return FALSE;
 994         if (image.Ok())
 995             *this = wxBitmap(image);
 996         else return FALSE;
 997     }
 998
 999     return TRUE;
1000 }
1001
1002 wxPalette *wxBitmap::GetPalette() const
1003 {
1004     if (!Ok()) return (wxPalette *) NULL;
1005
1006     return M_BMPDATA->m_palette;
1007 }
1008
1009 void wxBitmap::SetHeight( int height )
1010 {
1011     if (!m_refData) m_refData = new wxBitmapRefData();
1012
1013     M_BMPDATA->m_height = height;
1014 }
1015
1016 void wxBitmap::SetWidth( int width )
1017 {
1018     if (!m_refData) m_refData = new wxBitmapRefData();
1019
1020     M_BMPDATA->m_width = width;
1021 }
1022
1023 void wxBitmap::SetDepth( int depth )
1024 {
1025     if (!m_refData) m_refData = new wxBitmapRefData();
1026
1027     M_BMPDATA->m_bpp = depth;
1028 }
1029
1030 void wxBitmap::SetPixmap( GdkPixmap *pixmap )
1031 {
1032     if (!m_refData) m_refData = new wxBitmapRefData();
1033
1034     M_BMPDATA->m_pixmap = pixmap;
1035 }
1036
1037 void wxBitmap::SetBitmap( GdkPixmap *bitmap )
1038 {
1039     if (!m_refData) m_refData = new wxBitmapRefData();
1040
1041     M_BMPDATA->m_bitmap = bitmap;
1042 }
1043
1044 GdkPixmap *wxBitmap::GetPixmap() const
1045 {
1046     wxCHECK_MSG( Ok(), (GdkPixmap *) NULL, wxT("invalid bitmap") );
1047
1048     return M_BMPDATA->m_pixmap;
1049 }
1050
1051 GdkBitmap *wxBitmap::GetBitmap() const
1052 {
1053     wxCHECK_MSG( Ok(), (GdkBitmap *) NULL, wxT("invalid bitmap") );
1054
1055     return M_BMPDATA->m_bitmap;
1056 }