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