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 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  11 #pragma implementation "bitmap.h"
  12 #endif
  13
  14 // For compilers that support precompilation, includes "wx.h".
  15 #include "wx/wxprec.h"
  16
  17 #include "wx/defs.h"
  18
  19 #include "wx/palette.h"
  20 #include "wx/bitmap.h"
  21 #include "wx/icon.h"
  22 #include "wx/filefn.h"
  23 #include "wx/image.h"
  24 #include "wx/dcmemory.h"
  25 #include "wx/app.h"
  26
  27 #ifdef __WXGTK20__
  28     // need this to get gdk_image_new_bitmap()
  29     #define GDK_ENABLE_BROKEN
  30 #endif
  31
  32 #include <gdk/gdk.h>
  33 #include <gtk/gtk.h>
  34 #include <gdk/gdkx.h>
  35
  36 #ifdef __WXGTK20__
  37     #include <gdk/gdkimage.h>
  38 #else // GTK+ 1.2
  39     #include <gdk/gdkrgb.h>
  40 #endif // GTK+ 2.0/1.2
  41
  42 #include <math.h>
  43
  44 extern void gdk_wx_draw_bitmap     (GdkDrawable  *drawable,
  45                           GdkGC               *gc,
  46                           GdkDrawable  *src,
  47                           gint                xsrc,
  48                           gint                ysrc,
  49                           gint                xdest,
  50                           gint                ydest,
  51                           gint                width,
  52                           gint                height);
  53
  54 //-----------------------------------------------------------------------------
  55 // data
  56 //-----------------------------------------------------------------------------
  57
  58 extern GtkWidget *wxGetRootWindow();
  59
  60 //-----------------------------------------------------------------------------
  61 // wxMask
  62 //-----------------------------------------------------------------------------
  63
  64 IMPLEMENT_DYNAMIC_CLASS(wxMask,wxObject)
  65
  66 wxMask::wxMask()
  67 {
  68     m_bitmap = (GdkBitmap *) NULL;
  69 }
  70
  71 wxMask::wxMask( const wxBitmap& bitmap, const wxColour& colour )
  72 {
  73     m_bitmap = (GdkBitmap *) NULL;
  74     Create( bitmap, colour );
  75 }
  76
  77 wxMask::wxMask( const wxBitmap& bitmap, int paletteIndex )
  78 {
  79     m_bitmap = (GdkBitmap *) NULL;
  80     Create( bitmap, paletteIndex );
  81 }
  82
  83 wxMask::wxMask( const wxBitmap& bitmap )
  84 {
  85     m_bitmap = (GdkBitmap *) NULL;
  86     Create( bitmap );
  87 }
  88
  89 wxMask::~wxMask()
  90 {
  91     if (m_bitmap)
  92         gdk_bitmap_unref( m_bitmap );
  93 }
  94
  95 bool wxMask::Create( const wxBitmap& bitmap,
  96                      const wxColour& colour )
  97 {
  98     if (m_bitmap)
  99     {
 100         gdk_bitmap_unref( m_bitmap );
 101         m_bitmap = (GdkBitmap*) NULL;
 102     }
 103
 104     wxImage image = bitmap.ConvertToImage();
 105     if (!image.Ok()) return FALSE;
 106
 107     m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, image.GetWidth(), image.GetHeight(), 1 );
 108     GdkGC *gc = gdk_gc_new( m_bitmap );
 109
 110     GdkColor color;
 111     color.red = 65000;
 112     color.green = 65000;
 113     color.blue = 65000;
 114     color.pixel = 1;
 115     gdk_gc_set_foreground( gc, &color );
 116     gdk_gc_set_fill( gc, GDK_SOLID );
 117     gdk_draw_rectangle( m_bitmap, gc, TRUE, 0, 0, image.GetWidth(), image.GetHeight() );
 118
 119     unsigned char *data = image.GetData();
 120     int index = 0;
 121
 122     unsigned char red = colour.Red();
 123     unsigned char green = colour.Green();
 124     unsigned char blue = colour.Blue();
 125
 126     GdkVisual *visual = wxTheApp->GetGdkVisual();
 127
 128     int bpp = visual->depth;
 129     if ((bpp == 16) && (visual->red_mask != 0xf800))
 130         bpp = 15;
 131     if (bpp == 15)
 132     {
 133         red = red & 0xf8;
 134         green = green & 0xf8;
 135         blue = blue & 0xf8;
 136     }
 137     else if (bpp == 16)
 138     {
 139         red = red & 0xf8;
 140         green = green & 0xfc;
 141         blue = blue & 0xf8;
 142     }
 143     else if (bpp == 12)
 144     {
 145         red = red & 0xf0;
 146         green = green & 0xf0;
 147         blue = blue & 0xf0;
 148     }
 149
 150     color.red = 0;
 151     color.green = 0;
 152     color.blue = 0;
 153     color.pixel = 0;
 154     gdk_gc_set_foreground( gc, &color );
 155
 156     for (int j = 0; j < image.GetHeight(); j++)
 157     {
 158         int start_x = -1;
 159         int i;
 160         for (i = 0; i < image.GetWidth(); i++)
 161         {
 162             if ((data[index] == red) &&
 163                 (data[index+1] == green) &&
 164                 (data[index+2] == blue))
 165             {
 166                 if (start_x == -1)
 167                 start_x = i;
 168             }
 169             else
 170             {
 171                 if (start_x != -1)
 172                 {
 173                     gdk_draw_line( m_bitmap, gc, start_x, j, i-1, j );
 174                     start_x = -1;
 175                 }
 176             }
 177             index += 3;
 178         }
 179         if (start_x != -1)
 180             gdk_draw_line( m_bitmap, gc, start_x, j, i, j );
 181     }
 182
 183     gdk_gc_unref( gc );
 184
 185     return TRUE;
 186 }
 187
 188 bool wxMask::Create( const wxBitmap& bitmap, int paletteIndex )
 189 {
 190     unsigned char r,g,b;
 191     wxPalette *pal = bitmap.GetPalette();
 192
 193     wxCHECK_MSG( pal, FALSE, wxT("Cannot create mask from bitmap without palette") );
 194
 195     pal->GetRGB(paletteIndex, &r, &g, &b);
 196
 197     return Create(bitmap, wxColour(r, g, b));
 198 }
 199
 200 bool wxMask::Create( const wxBitmap& bitmap )
 201 {
 202     if (m_bitmap)
 203     {
 204         gdk_bitmap_unref( m_bitmap );
 205         m_bitmap = (GdkBitmap*) NULL;
 206     }
 207
 208     if (!bitmap.Ok()) return FALSE;
 209
 210     wxCHECK_MSG( bitmap.GetBitmap(), FALSE, wxT("Cannot create mask from colour bitmap") );
 211
 212     m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, bitmap.GetWidth(), bitmap.GetHeight(), 1 );
 213
 214     if (!m_bitmap) return FALSE;
 215
 216     GdkGC *gc = gdk_gc_new( m_bitmap );
 217
 218     gdk_wx_draw_bitmap( m_bitmap, gc, bitmap.GetBitmap(), 0, 0, 0, 0, bitmap.GetWidth(), bitmap.GetHeight() );
 219
 220     gdk_gc_unref( gc );
 221
 222     return TRUE;
 223 }
 224
 225 GdkBitmap *wxMask::GetBitmap() const
 226 {
 227     return m_bitmap;
 228 }
 229
 230 //-----------------------------------------------------------------------------
 231 // wxBitmap
 232 //-----------------------------------------------------------------------------
 233
 234 class wxBitmapRefData: public wxObjectRefData
 235 {
 236 public:
 237     wxBitmapRefData();
 238     ~wxBitmapRefData();
 239
 240     GdkPixmap      *m_pixmap;
 241     GdkBitmap      *m_bitmap;
 242 #ifdef __WXGTK20__
 243     GdkPixbuf      *m_pixbuf;
 244 #endif
 245     wxMask         *m_mask;
 246     int             m_width;
 247     int             m_height;
 248     int             m_bpp;
 249     wxPalette      *m_palette;
 250 };
 251
 252 wxBitmapRefData::wxBitmapRefData()
 253 {
 254     m_pixmap = (GdkPixmap *) NULL;
 255     m_bitmap = (GdkBitmap *) NULL;
 256 #ifdef __WXGTK20__
 257     m_pixbuf = (GdkPixbuf *) NULL;
 258 #endif
 259     m_mask = (wxMask *) NULL;
 260     m_width = 0;
 261     m_height = 0;
 262     m_bpp = 0;
 263     m_palette = (wxPalette *) NULL;
 264 }
 265
 266 wxBitmapRefData::~wxBitmapRefData()
 267 {
 268     if (m_pixmap)
 269         gdk_pixmap_unref( m_pixmap );
 270     if (m_bitmap)
 271         gdk_bitmap_unref( m_bitmap );
 272 #ifdef __WXGTK20__
 273     if (m_pixbuf)
 274         gdk_pixbuf_unref( m_pixbuf );
 275 #endif
 276     delete m_mask;
 277     delete m_palette;
 278 }
 279
 280 //-----------------------------------------------------------------------------
 281
 282 #define M_BMPDATA ((wxBitmapRefData *)m_refData)
 283
 284 IMPLEMENT_DYNAMIC_CLASS(wxBitmap,wxGDIObject)
 285
 286 wxBitmap::wxBitmap()
 287 {
 288 }
 289
 290 wxBitmap::wxBitmap( int width, int height, int depth )
 291 {
 292     Create( width, height, depth );
 293 }
 294
 295 bool wxBitmap::Create( int width, int height, int depth )
 296 {
 297     UnRef();
 298
 299     if ( width <= 0 || height <= 0 )
 300     {
 301         return false;
 302     }
 303
 304     GdkVisual *visual = wxTheApp->GetGdkVisual();
 305
 306     if (depth == -1)
 307         depth = visual->depth;
 308
 309     wxCHECK_MSG( (depth == visual->depth) || (depth == 1), FALSE,
 310                     wxT("invalid bitmap depth") )
 311
 312     m_refData = new wxBitmapRefData();
 313     M_BMPDATA->m_mask = (wxMask *) NULL;
 314     M_BMPDATA->m_width = width;
 315     M_BMPDATA->m_height = height;
 316     if (depth == 1)
 317     {
 318         M_BMPDATA->m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, width, height, 1 );
 319         M_BMPDATA->m_bpp = 1;
 320     }
 321     else
 322     {
 323         M_BMPDATA->m_pixmap = gdk_pixmap_new( wxGetRootWindow()->window, width, height, depth );
 324         M_BMPDATA->m_bpp = visual->depth;
 325     }
 326
 327     return Ok();
 328 }
 329
 330 bool wxBitmap::CreateFromXpm( const char **bits )
 331 {
 332     UnRef();
 333
 334     wxCHECK_MSG( bits != NULL, FALSE, wxT("invalid bitmap data") )
 335
 336     GdkVisual *visual = wxTheApp->GetGdkVisual();
 337
 338     m_refData = new wxBitmapRefData();
 339
 340     GdkBitmap *mask = (GdkBitmap*) NULL;
 341
 342     M_BMPDATA->m_pixmap = gdk_pixmap_create_from_xpm_d( wxGetRootWindow()->window, &mask, NULL, (gchar **) bits );
 343
 344     wxCHECK_MSG( M_BMPDATA->m_pixmap, FALSE, wxT("couldn't create pixmap") );
 345
 346     if (mask)
 347     {
 348         M_BMPDATA->m_mask = new wxMask();
 349         M_BMPDATA->m_mask->m_bitmap = mask;
 350     }
 351
 352     gdk_window_get_size( M_BMPDATA->m_pixmap, &(M_BMPDATA->m_width), &(M_BMPDATA->m_height) );
 353
 354     M_BMPDATA->m_bpp = visual->depth;  // Can we get a different depth from create_from_xpm_d() ?
 355
 356     return TRUE;
 357 }
 358
 359 wxBitmap wxBitmap::Rescale( int clipx, int clipy, int clipwidth, int clipheight, int newx, int newy )
 360 {
 361     wxCHECK_MSG( Ok(), wxNullBitmap, wxT("invalid bitmap") );
 362
 363     if (newy==M_BMPDATA->m_width && newy==M_BMPDATA->m_height)
 364         return *this;
 365
 366     int width = wxMax(newx, 1);
 367     int height = wxMax(newy, 1);
 368     width = wxMin(width, clipwidth);
 369     height = wxMin(height, clipheight);
 370
 371     wxBitmap bmp;
 372
 373 #ifdef __WXGTK20__
 374     if (HasPixbuf())
 375     {
 376         bmp.SetWidth(width);
 377         bmp.SetHeight(height);
 378         bmp.SetDepth(GetDepth());
 379         bmp.SetPixbuf(gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE/*has_alpha*/,
 380                                      8, width, height));
 381         gdk_pixbuf_scale(M_BMPDATA->m_pixbuf, bmp.GetPixbuf(),
 382                          0, 0, width, height,
 383                          clipx, clipy,
 384                          (double)newx/GetWidth(), (double)newy/GetHeight(),
 385                          GDK_INTERP_BILINEAR);
 386     }
 387     else
 388 #endif // __WXGTK20__
 389     {
 390         GdkImage *img = (GdkImage*) NULL;
 391         if (GetPixmap())
 392             img = gdk_image_get( GetPixmap(), 0, 0, GetWidth(), GetHeight() );
 393         else if (GetBitmap())
 394             img = gdk_image_get( GetBitmap(), 0, 0, GetWidth(), GetHeight() );
 395         else
 396             wxFAIL_MSG( wxT("Ill-formed bitmap") );
 397
 398         wxCHECK_MSG( img, wxNullBitmap, wxT("couldn't create image") );
 399
 400         int bpp = -1;
 401
 402
 403         GdkGC *gc = NULL;
 404         GdkPixmap *dstpix = NULL;
 405         if (GetPixmap())
 406         {
 407             GdkVisual *visual = gdk_window_get_visual( GetPixmap() );
 408             if (visual == NULL)
 409                 visual = wxTheApp->GetGdkVisual();
 410
 411             bpp = visual->depth;
 412             bmp = wxBitmap(width,height,bpp);
 413             dstpix = bmp.GetPixmap();
 414             gc = gdk_gc_new( dstpix );
 415         }
 416
 417         char *dst = NULL;
 418         long dstbyteperline = 0;
 419
 420         if (GetBitmap())
 421         {
 422             bpp = 1;
 423             dstbyteperline = width/8*M_BMPDATA->m_bpp;
 424             if (width*M_BMPDATA->m_bpp % 8 != 0)
 425                 dstbyteperline++;
 426             dst = (char*) malloc(dstbyteperline*height);
 427         }
 428
 429         // be careful to use the right scaling factor
 430         float scx = (float)M_BMPDATA->m_width/(float)newx;
 431         float scy = (float)M_BMPDATA->m_height/(float)newy;
 432         // prepare accel-tables
 433         int *tablex = (int *)calloc(width,sizeof(int));
 434         int *tabley = (int *)calloc(height,sizeof(int));
 435
 436         // accel table filled with clipped values
 437         for (int x = 0; x < width; x++)
 438             tablex[x] = (int) (scx * (x+clipx));
 439         for (int y = 0; y < height; y++)
 440             tabley[y] = (int) (scy * (y+clipy));
 441
 442         // Main rescaling routine starts here
 443         for (int h = 0; h < height; h++)
 444         {
 445             char outbyte = 0;
 446             int old_x = -1;
 447             guint32 old_pixval = 0;
 448
 449             for (int w = 0; w < width; w++)
 450             {
 451                 guint32 pixval;
 452                 int x = tablex[w];
 453                 if (x == old_x)
 454                     pixval = old_pixval;
 455                 else
 456                 {
 457                     pixval = gdk_image_get_pixel( img, x, tabley[h] );
 458                     old_pixval = pixval;
 459                     old_x = x;
 460                 }
 461
 462                 if (bpp == 1)
 463                 {
 464                     if (!pixval)
 465                     {
 466                         char bit=1;
 467                         char shift = bit << w % 8;
 468                         outbyte |= shift;
 469                     }
 470
 471                     if ((w+1)%8==0)
 472                     {
 473                         dst[h*dstbyteperline+w/8] = outbyte;
 474                         outbyte = 0;
 475                     }
 476                 }
 477                 else
 478                 {
 479                     GdkColor col;
 480                     col.pixel = pixval;
 481                     gdk_gc_set_foreground( gc, &col );
 482                     gdk_draw_point( dstpix, gc, w, h);
 483                 }
 484             }
 485
 486             // do not forget the last byte
 487             if ((bpp == 1) && (width % 8 != 0))
 488                 dst[h*dstbyteperline+width/8] = outbyte;
 489         }
 490
 491         gdk_image_destroy( img );
 492         if (gc) gdk_gc_unref( gc );
 493
 494         if (bpp == 1)
 495         {
 496             bmp = wxBitmap( (const char *)dst, width, height, 1 );
 497             free( dst );
 498         }
 499
 500         if (GetMask())
 501         {
 502             dstbyteperline = width/8;
 503             if (width % 8 != 0)
 504                 dstbyteperline++;
 505             dst = (char*) malloc(dstbyteperline*height);
 506             img = gdk_image_get( GetMask()->GetBitmap(), 0, 0, GetWidth(), GetHeight() );
 507
 508             for (int h = 0; h < height; h++)
 509             {
 510                 char outbyte = 0;
 511                 int old_x = -1;
 512                 guint32 old_pixval = 0;
 513
 514                 for (int w = 0; w < width; w++)
 515                 {
 516                     guint32 pixval;
 517                     int x = tablex[w];
 518                     if (x == old_x)
 519                         pixval = old_pixval;
 520                     else
 521                     {
 522                         pixval = gdk_image_get_pixel( img, x, tabley[h] );
 523                         old_pixval = pixval;
 524                         old_x = x;
 525                     }
 526
 527                     if (pixval)
 528                     {
 529                         char bit=1;
 530                         char shift = bit << w % 8;
 531                         outbyte |= shift;
 532                     }
 533
 534                     if ((w+1)%8 == 0)
 535                     {
 536                         dst[h*dstbyteperline+w/8] = outbyte;
 537                         outbyte = 0;
 538                     }
 539                 }
 540
 541                 // do not forget the last byte
 542                 if (width % 8 != 0)
 543                     dst[h*dstbyteperline+width/8] = outbyte;
 544             }
 545             wxMask* mask = new wxMask;
 546             mask->m_bitmap = gdk_bitmap_create_from_data( wxGetRootWindow()->window, (gchar *) dst, width, height );
 547             bmp.SetMask(mask);
 548
 549             free( dst );
 550             gdk_image_destroy( img );
 551         }
 552
 553         free( tablex );
 554         free( tabley );
 555     }
 556
 557     return bmp;
 558 }
 559
 560 bool wxBitmap::CreateFromImage(const wxImage& image, int depth)
 561 {
 562     UnRef();
 563
 564     wxCHECK_MSG( image.Ok(), FALSE, wxT("invalid image") )
 565     wxCHECK_MSG( depth == -1 || depth == 1, FALSE, wxT("invalid bitmap depth") )
 566
 567     if (image.GetWidth() <= 0 || image.GetHeight() <= 0)
 568         return false;
 569
 570     m_refData = new wxBitmapRefData();
 571
 572     if (depth == 1)
 573     {
 574         return CreateFromImageAsBitmap(image);
 575     }
 576     else
 577     {
 578 #ifdef __WXGTK20__
 579         if (image.HasAlpha())
 580             return CreateFromImageAsPixbuf(image);
 581 #endif
 582         return CreateFromImageAsPixmap(image);
 583     }
 584 }
 585
 586 // conversion to mono bitmap:
 587 bool wxBitmap::CreateFromImageAsBitmap(const wxImage& img)
 588 {
 589     // convert alpha channel to mask, if it is present:
 590     wxImage image(img);
 591     image.ConvertAlphaToMask();
 592
 593     int width = image.GetWidth();
 594     int height = image.GetHeight();
 595
 596     SetHeight( height );
 597     SetWidth( width );
 598
 599     SetBitmap( gdk_pixmap_new( wxGetRootWindow()->window, width, height, 1 ) );
 600
 601     SetDepth( 1 );
 602
 603     GdkVisual *visual = wxTheApp->GetGdkVisual();
 604
 605     // Create picture image
 606
 607     unsigned char *data_data = (unsigned char*)malloc( ((width >> 3)+8) * height );
 608
 609     GdkImage *data_image =
 610         gdk_image_new_bitmap( visual, data_data, width, height );
 611
 612     // Create mask image
 613
 614     GdkImage *mask_image = (GdkImage*) NULL;
 615
 616     if (image.HasMask())
 617     {
 618         unsigned char *mask_data = (unsigned char*)malloc( ((width >> 3)+8) * height );
 619
 620         mask_image =  gdk_image_new_bitmap( visual, mask_data, width, height );
 621
 622         wxMask *mask = new wxMask();
 623         mask->m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, width, height, 1 );
 624
 625         SetMask( mask );
 626     }
 627
 628     int r_mask = image.GetMaskRed();
 629     int g_mask = image.GetMaskGreen();
 630     int b_mask = image.GetMaskBlue();
 631
 632     unsigned char* data = image.GetData();
 633
 634     int index = 0;
 635     for (int y = 0; y < height; y++)
 636     {
 637         for (int x = 0; x < width; x++)
 638         {
 639             int r = data[index];
 640             index++;
 641             int g = data[index];
 642             index++;
 643             int b = data[index];
 644             index++;
 645
 646             if (image.HasMask())
 647             {
 648                 if ((r == r_mask) && (b == b_mask) && (g == g_mask))
 649                     gdk_image_put_pixel( mask_image, x, y, 1 );
 650                 else
 651                     gdk_image_put_pixel( mask_image, x, y, 0 );
 652             }
 653
 654             if ((r == 255) && (b == 255) && (g == 255))
 655                 gdk_image_put_pixel( data_image, x, y, 1 );
 656             else
 657                 gdk_image_put_pixel( data_image, x, y, 0 );
 658
 659         } // for
 660     }  // for
 661
 662     // Blit picture
 663
 664     GdkGC *data_gc = gdk_gc_new( GetBitmap() );
 665
 666     gdk_draw_image( GetBitmap(), data_gc, data_image, 0, 0, 0, 0, width, height );
 667
 668     gdk_image_destroy( data_image );
 669     gdk_gc_unref( data_gc );
 670
 671     // Blit mask
 672
 673     if (image.HasMask())
 674     {
 675         GdkGC *mask_gc = gdk_gc_new( GetMask()->GetBitmap() );
 676
 677         gdk_draw_image( GetMask()->GetBitmap(), mask_gc, mask_image, 0, 0, 0, 0, width, height );
 678
 679         gdk_image_destroy( mask_image );
 680         gdk_gc_unref( mask_gc );
 681     }
 682
 683     return true;
 684 }
 685
 686 // conversion to colour bitmap:
 687 bool wxBitmap::CreateFromImageAsPixmap(const wxImage& img)
 688 {
 689     // convert alpha channel to mask, if it is present:
 690     wxImage image(img);
 691     image.ConvertAlphaToMask();
 692
 693     int width = image.GetWidth();
 694     int height = image.GetHeight();
 695
 696     SetHeight( height );
 697     SetWidth( width );
 698
 699     SetPixmap( gdk_pixmap_new( wxGetRootWindow()->window, width, height, -1 ) );
 700
 701     GdkVisual *visual = wxTheApp->GetGdkVisual();
 702
 703     int bpp = visual->depth;
 704
 705     SetDepth( bpp );
 706
 707     if ((bpp == 16) && (visual->red_mask != 0xf800))
 708         bpp = 15;
 709     else if (bpp < 8)
 710         bpp = 8;
 711
 712     // We handle 8-bit bitmaps ourselves using the colour cube, 12-bit
 713     // visuals are not supported by GDK so we do these ourselves, too.
 714     // 15-bit and 16-bit should actually work and 24-bit certainly does.
 715 #ifdef __sgi
 716     if (!image.HasMask() && (bpp > 16))
 717 #else
 718     if (!image.HasMask() && (bpp > 12))
 719 #endif
 720     {
 721         static bool s_hasInitialized = FALSE;
 722
 723         if (!s_hasInitialized)
 724         {
 725             gdk_rgb_init();
 726             s_hasInitialized = TRUE;
 727         }
 728
 729         GdkGC *gc = gdk_gc_new( GetPixmap() );
 730
 731         gdk_draw_rgb_image( GetPixmap(),
 732                             gc,
 733                             0, 0,
 734                             width, height,
 735                             GDK_RGB_DITHER_NONE,
 736                             image.GetData(),
 737                             width*3 );
 738
 739         gdk_gc_unref( gc );
 740         return TRUE;
 741     }
 742
 743     // Create picture image
 744
 745     GdkImage *data_image =
 746         gdk_image_new( GDK_IMAGE_FASTEST, visual, width, height );
 747
 748     // Create mask image
 749
 750     GdkImage *mask_image = (GdkImage*) NULL;
 751
 752     if (image.HasMask())
 753     {
 754         unsigned char *mask_data = (unsigned char*)malloc( ((width >> 3)+8) * height );
 755
 756         mask_image =  gdk_image_new_bitmap( visual, mask_data, width, height );
 757
 758         wxMask *mask = new wxMask();
 759         mask->m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, width, height, 1 );
 760
 761         SetMask( mask );
 762     }
 763
 764     // Render
 765
 766     enum byte_order { RGB, RBG, BRG, BGR, GRB, GBR };
 767     byte_order b_o = RGB;
 768
 769     if (bpp > 8)
 770     {
 771         if ((visual->red_mask > visual->green_mask) && (visual->green_mask > visual->blue_mask))      b_o = RGB;
 772         else if ((visual->red_mask > visual->blue_mask) && (visual->blue_mask > visual->green_mask))  b_o = RBG;
 773         else if ((visual->blue_mask > visual->red_mask) && (visual->red_mask > visual->green_mask))   b_o = BRG;
 774         else if ((visual->blue_mask > visual->green_mask) && (visual->green_mask > visual->red_mask)) b_o = BGR;
 775         else if ((visual->green_mask > visual->red_mask) && (visual->red_mask > visual->blue_mask))   b_o = GRB;
 776         else if ((visual->green_mask > visual->blue_mask) && (visual->blue_mask > visual->red_mask))  b_o = GBR;
 777     }
 778
 779     int r_mask = image.GetMaskRed();
 780     int g_mask = image.GetMaskGreen();
 781     int b_mask = image.GetMaskBlue();
 782
 783     unsigned char* data = image.GetData();
 784
 785     int index = 0;
 786     for (int y = 0; y < height; y++)
 787     {
 788         for (int x = 0; x < width; x++)
 789         {
 790             int r = data[index];
 791             index++;
 792             int g = data[index];
 793             index++;
 794             int b = data[index];
 795             index++;
 796
 797             if (image.HasMask())
 798             {
 799                 if ((r == r_mask) && (b == b_mask) && (g == g_mask))
 800                     gdk_image_put_pixel( mask_image, x, y, 1 );
 801                 else
 802                     gdk_image_put_pixel( mask_image, x, y, 0 );
 803             }
 804
 805             switch (bpp)
 806             {
 807                 case 8:
 808                 {
 809                     int pixel = -1;
 810                     if (wxTheApp->m_colorCube)
 811                     {
 812                         pixel = wxTheApp->m_colorCube[ ((r & 0xf8) << 7) + ((g & 0xf8) << 2) + ((b & 0xf8) >> 3) ];
 813                     }
 814                     else
 815                     {
 816                         GdkColormap *cmap = gtk_widget_get_default_colormap();
 817                         GdkColor *colors = cmap->colors;
 818                         int max = 3 * (65536);
 819
 820                         for (int i = 0; i < cmap->size; i++)
 821                         {
 822                             int rdiff = (r << 8) - colors[i].red;
 823                             int gdiff = (g << 8) - colors[i].green;
 824                             int bdiff = (b << 8) - colors[i].blue;
 825                             int sum = ABS (rdiff) + ABS (gdiff) + ABS (bdiff);
 826                             if (sum < max) { pixel = i; max = sum; }
 827                         }
 828                     }
 829
 830                     gdk_image_put_pixel( data_image, x, y, pixel );
 831
 832                     break;
 833                 }
 834                 case 12:  // SGI only
 835                 {
 836                     guint32 pixel = 0;
 837                     switch (b_o)
 838                     {
 839                         case RGB: pixel = ((r & 0xf0) << 4) | (g & 0xf0) | ((b & 0xf0) >> 4); break;
 840                         case RBG: pixel = ((r & 0xf0) << 4) | (b & 0xf0) | ((g & 0xf0) >> 4); break;
 841                         case GRB: pixel = ((g & 0xf0) << 4) | (r & 0xf0) | ((b & 0xf0) >> 4); break;
 842                         case GBR: pixel = ((g & 0xf0) << 4) | (b & 0xf0) | ((r & 0xf0) >> 4); break;
 843                         case BRG: pixel = ((b & 0xf0) << 4) | (r & 0xf0) | ((g & 0xf0) >> 4); break;
 844                         case BGR: pixel = ((b & 0xf0) << 4) | (g & 0xf0) | ((r & 0xf0) >> 4); break;
 845                     }
 846                     gdk_image_put_pixel( data_image, x, y, pixel );
 847                     break;
 848                 }
 849                 case 15:
 850                 {
 851                     guint32 pixel = 0;
 852                     switch (b_o)
 853                     {
 854                         case RGB: pixel = ((r & 0xf8) << 7) | ((g & 0xf8) << 2) | ((b & 0xf8) >> 3); break;
 855                         case RBG: pixel = ((r & 0xf8) << 7) | ((b & 0xf8) << 2) | ((g & 0xf8) >> 3); break;
 856                         case GRB: pixel = ((g & 0xf8) << 7) | ((r & 0xf8) << 2) | ((b & 0xf8) >> 3); break;
 857                         case GBR: pixel = ((g & 0xf8) << 7) | ((b & 0xf8) << 2) | ((r & 0xf8) >> 3); break;
 858                         case BRG: pixel = ((b & 0xf8) << 7) | ((r & 0xf8) << 2) | ((g & 0xf8) >> 3); break;
 859                         case BGR: pixel = ((b & 0xf8) << 7) | ((g & 0xf8) << 2) | ((r & 0xf8) >> 3); break;
 860                     }
 861                     gdk_image_put_pixel( data_image, x, y, pixel );
 862                     break;
 863                 }
 864                 case 16:
 865                 {
 866                     // I actually don't know if for 16-bit displays, it is alway the green
 867                     // component or the second component which has 6 bits.
 868                     guint32 pixel = 0;
 869                     switch (b_o)
 870                     {
 871                         case RGB: pixel = ((r & 0xf8) << 8) | ((g & 0xfc) << 3) | ((b & 0xf8) >> 3); break;
 872                         case RBG: pixel = ((r & 0xf8) << 8) | ((b & 0xfc) << 3) | ((g & 0xf8) >> 3); break;
 873                         case GRB: pixel = ((g & 0xf8) << 8) | ((r & 0xfc) << 3) | ((b & 0xf8) >> 3); break;
 874                         case GBR: pixel = ((g & 0xf8) << 8) | ((b & 0xfc) << 3) | ((r & 0xf8) >> 3); break;
 875                         case BRG: pixel = ((b & 0xf8) << 8) | ((r & 0xfc) << 3) | ((g & 0xf8) >> 3); break;
 876                         case BGR: pixel = ((b & 0xf8) << 8) | ((g & 0xfc) << 3) | ((r & 0xf8) >> 3); break;
 877                     }
 878                     gdk_image_put_pixel( data_image, x, y, pixel );
 879                     break;
 880                 }
 881                 case 32:
 882                 case 24:
 883                 {
 884                     guint32 pixel = 0;
 885                     switch (b_o)
 886                     {
 887                         case RGB: pixel = (r << 16) | (g << 8) | b; break;
 888                         case RBG: pixel = (r << 16) | (b << 8) | g; break;
 889                         case BRG: pixel = (b << 16) | (r << 8) | g; break;
 890                         case BGR: pixel = (b << 16) | (g << 8) | r; break;
 891                         case GRB: pixel = (g << 16) | (r << 8) | b; break;
 892                         case GBR: pixel = (g << 16) | (b << 8) | r; break;
 893                     }
 894                     gdk_image_put_pixel( data_image, x, y, pixel );
 895                 }
 896                 default: break;
 897             }
 898         } // for
 899     }  // for
 900
 901     // Blit picture
 902
 903     GdkGC *data_gc = gdk_gc_new( GetPixmap() );
 904
 905     gdk_draw_image( GetPixmap(), data_gc, data_image, 0, 0, 0, 0, width, height );
 906
 907     gdk_image_destroy( data_image );
 908     gdk_gc_unref( data_gc );
 909
 910     // Blit mask
 911
 912     if (image.HasMask())
 913     {
 914         GdkGC *mask_gc = gdk_gc_new( GetMask()->GetBitmap() );
 915
 916         gdk_draw_image( GetMask()->GetBitmap(), mask_gc, mask_image, 0, 0, 0, 0, width, height );
 917
 918         gdk_image_destroy( mask_image );
 919         gdk_gc_unref( mask_gc );
 920     }
 921
 922     return true;
 923 }
 924
 925 #ifdef __WXGTK20__
 926 bool wxBitmap::CreateFromImageAsPixbuf(const wxImage& image)
 927 {
 928     int width = image.GetWidth();
 929     int height = image.GetHeight();
 930
 931     GdkPixbuf *pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB,
 932                                        image.HasAlpha(),
 933                                        8 /* bits per sample */,
 934                                        width, height);
 935     if (!pixbuf)
 936         return false;
 937
 938     wxASSERT( gdk_pixbuf_get_n_channels(pixbuf) == 4 );
 939     wxASSERT( gdk_pixbuf_get_width(pixbuf) == width );
 940     wxASSERT( gdk_pixbuf_get_height(pixbuf) == height );
 941
 942     M_BMPDATA->m_pixbuf = pixbuf;
 943     SetHeight(height);
 944     SetWidth(width);
 945     SetDepth(wxTheApp->GetGdkVisual()->depth);
 946
 947     // Copy the data:
 948     unsigned char *in = image.GetData();
 949     unsigned char *out = gdk_pixbuf_get_pixels(pixbuf);
 950     unsigned char *alpha = image.GetAlpha();
 951
 952     int rowinc = gdk_pixbuf_get_rowstride(pixbuf) - 4 * width;
 953
 954
 955     for (int y = 0; y < height; y++, out += rowinc)
 956     {
 957         for (int x = 0; x < width; x++, alpha++, out += 4, in += 3)
 958         {
 959             out[0] = in[0];
 960             out[1] = in[1];
 961             out[2] = in[2];
 962             out[3] = *alpha;
 963         }
 964     }
 965
 966     return true;
 967 }
 968 #endif // __WXGTK20__
 969
 970 wxImage wxBitmap::ConvertToImage() const
 971 {
 972     wxImage image;
 973
 974     wxCHECK_MSG( Ok(), wxNullImage, wxT("invalid bitmap") );
 975
 976     image.Create(GetWidth(), GetHeight());
 977     unsigned char *data = image.GetData();
 978
 979     if (!data)
 980     {
 981         wxFAIL_MSG( wxT("couldn't create image") );
 982         return wxNullImage;
 983     }
 984
 985 #ifdef __WXGTK20__
 986     if (HasPixbuf())
 987     {
 988         GdkPixbuf *pixbuf = GetPixbuf();
 989         wxASSERT( gdk_pixbuf_get_has_alpha(pixbuf) );
 990
 991         int w = GetWidth();
 992         int h = GetHeight();
 993
 994         image.SetAlpha();
 995
 996         unsigned char *alpha = image.GetAlpha();
 997         unsigned char *in = gdk_pixbuf_get_pixels(pixbuf);
 998         unsigned char *out = data;
 999         int rowinc = gdk_pixbuf_get_rowstride(pixbuf) - 4 * w;
1000
1001         for (int y = 0; y < h; y++, in += rowinc)
1002         {
1003             for (int x = 0; x < w; x++, in += 4, out += 3, alpha++)
1004             {
1005                 out[0] = in[0];
1006                 out[1] = in[1];
1007                 out[2] = in[2];
1008                 *alpha = in[3];
1009             }
1010         }
1011     }
1012     else
1013 #endif // __WXGTK20__
1014     {
1015         // the colour used as transparent one in wxImage and the one it is
1016         // replaced with when it really occurs in the bitmap
1017         static const int MASK_RED = 1;
1018         static const int MASK_GREEN = 2;
1019         static const int MASK_BLUE = 3;
1020         static const int MASK_BLUE_REPLACEMENT = 2;
1021
1022         GdkImage *gdk_image = (GdkImage*) NULL;
1023
1024         if (HasPixmap())
1025         {
1026             gdk_image = gdk_image_get( GetPixmap(),
1027                                        0, 0,
1028                                        GetWidth(), GetHeight() );
1029         }
1030         else if (GetBitmap())
1031         {
1032             gdk_image = gdk_image_get( GetBitmap(),
1033                                        0, 0,
1034                                        GetWidth(), GetHeight() );
1035         }
1036         else
1037         {
1038             wxFAIL_MSG( wxT("Ill-formed bitmap") );
1039         }
1040
1041         wxCHECK_MSG( gdk_image, wxNullImage, wxT("couldn't create image") );
1042
1043         GdkImage *gdk_image_mask = (GdkImage*) NULL;
1044         if (GetMask())
1045         {
1046             gdk_image_mask = gdk_image_get( GetMask()->GetBitmap(),
1047                                             0, 0,
1048                                             GetWidth(), GetHeight() );
1049
1050             image.SetMaskColour( MASK_RED, MASK_GREEN, MASK_BLUE );
1051         }
1052
1053         int bpp = -1;
1054         int red_shift_right = 0;
1055         int green_shift_right = 0;
1056         int blue_shift_right = 0;
1057         int red_shift_left = 0;
1058         int green_shift_left = 0;
1059         int blue_shift_left = 0;
1060         bool use_shift = FALSE;
1061
1062         if (GetPixmap())
1063         {
1064             GdkVisual *visual = gdk_window_get_visual( GetPixmap() );
1065             if (visual == NULL)
1066                 visual = wxTheApp->GetGdkVisual();
1067
1068             bpp = visual->depth;
1069             if (bpp == 16)
1070                 bpp = visual->red_prec + visual->green_prec + visual->blue_prec;
1071             red_shift_right = visual->red_shift;
1072             red_shift_left = 8-visual->red_prec;
1073             green_shift_right = visual->green_shift;
1074             green_shift_left = 8-visual->green_prec;
1075             blue_shift_right = visual->blue_shift;
1076             blue_shift_left = 8-visual->blue_prec;
1077
1078             use_shift = (visual->type == GDK_VISUAL_TRUE_COLOR) || (visual->type == GDK_VISUAL_DIRECT_COLOR);
1079         }
1080         if (GetBitmap())
1081         {
1082             bpp = 1;
1083         }
1084
1085
1086         GdkColormap *cmap = gtk_widget_get_default_colormap();
1087
1088         long pos = 0;
1089         for (int j = 0; j < GetHeight(); j++)
1090         {
1091             for (int i = 0; i < GetWidth(); i++)
1092             {
1093                 wxUint32 pixel = gdk_image_get_pixel( gdk_image, i, j );
1094                 if (bpp == 1)
1095                 {
1096                     if (pixel == 0)
1097                     {
1098                         data[pos]   = 0;
1099                         data[pos+1] = 0;
1100                         data[pos+2] = 0;
1101                     }
1102                     else
1103                     {
1104                         data[pos]   = 255;
1105                         data[pos+1] = 255;
1106                         data[pos+2] = 255;
1107                     }
1108                 }
1109                 else if (use_shift)
1110                 {
1111                     data[pos] =   (pixel >> red_shift_right)   << red_shift_left;
1112                     data[pos+1] = (pixel >> green_shift_right) << green_shift_left;
1113                     data[pos+2] = (pixel >> blue_shift_right)  << blue_shift_left;
1114                 }
1115                 else if (cmap->colors)
1116                 {
1117                     data[pos] =   cmap->colors[pixel].red   >> 8;
1118                     data[pos+1] = cmap->colors[pixel].green >> 8;
1119                     data[pos+2] = cmap->colors[pixel].blue  >> 8;
1120                 }
1121                 else
1122                 {
1123                     wxFAIL_MSG( wxT("Image conversion failed. Unknown visual type.") );
1124                 }
1125
1126                 if (gdk_image_mask)
1127                 {
1128                     int mask_pixel = gdk_image_get_pixel( gdk_image_mask, i, j );
1129                     if (mask_pixel == 0)
1130                     {
1131                         data[pos] = MASK_RED;
1132                         data[pos+1] = MASK_GREEN;
1133                         data[pos+2] = MASK_BLUE;
1134                     }
1135                     else if ( data[pos] == MASK_RED &&
1136                                 data[pos+1] == MASK_GREEN &&
1137                                     data[pos+2] == MASK_BLUE )
1138                     {
1139                         data[pos+2] = MASK_BLUE_REPLACEMENT;
1140                     }
1141                 }
1142
1143                 pos += 3;
1144             }
1145         }
1146
1147         gdk_image_destroy( gdk_image );
1148         if (gdk_image_mask) gdk_image_destroy( gdk_image_mask );
1149     }
1150
1151     return image;
1152 }
1153
1154 wxBitmap::wxBitmap( const wxBitmap& bmp )
1155         : wxGDIObject()
1156 {
1157     Ref( bmp );
1158 }
1159
1160 wxBitmap::wxBitmap( const wxString &filename, int type )
1161 {
1162     LoadFile( filename, type );
1163 }
1164
1165 wxBitmap::wxBitmap( const char bits[], int width, int height, int WXUNUSED(depth))
1166 {
1167     if ( width > 0 && height > 0 )
1168     {
1169         m_refData = new wxBitmapRefData();
1170
1171         M_BMPDATA->m_mask = (wxMask *) NULL;
1172         M_BMPDATA->m_bitmap = gdk_bitmap_create_from_data
1173                               (
1174                                 wxGetRootWindow()->window,
1175                                 (gchar *) bits,
1176                                 width,
1177                                 height
1178                               );
1179         M_BMPDATA->m_width = width;
1180         M_BMPDATA->m_height = height;
1181         M_BMPDATA->m_bpp = 1;
1182
1183         wxASSERT_MSG( M_BMPDATA->m_bitmap, wxT("couldn't create bitmap") );
1184     }
1185 }
1186
1187 wxBitmap::~wxBitmap()
1188 {
1189 }
1190
1191 wxBitmap& wxBitmap::operator = ( const wxBitmap& bmp )
1192 {
1193     if ( m_refData != bmp.m_refData )
1194         Ref( bmp );
1195
1196     return *this;
1197 }
1198
1199 bool wxBitmap::operator == ( const wxBitmap& bmp ) const
1200 {
1201     return m_refData == bmp.m_refData;
1202 }
1203
1204 bool wxBitmap::operator != ( const wxBitmap& bmp ) const
1205 {
1206     return m_refData != bmp.m_refData;
1207 }
1208
1209 bool wxBitmap::Ok() const
1210 {
1211     return (m_refData != NULL) &&
1212            (
1213 #ifdef __WXGTK20__
1214               M_BMPDATA->m_pixbuf ||
1215 #endif
1216               M_BMPDATA->m_bitmap || M_BMPDATA->m_pixmap
1217            );
1218 }
1219
1220 int wxBitmap::GetHeight() const
1221 {
1222     wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1223
1224     return M_BMPDATA->m_height;
1225 }
1226
1227 int wxBitmap::GetWidth() const
1228 {
1229     wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1230
1231     return M_BMPDATA->m_width;
1232 }
1233
1234 int wxBitmap::GetDepth() const
1235 {
1236     wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1237
1238     return M_BMPDATA->m_bpp;
1239 }
1240
1241 wxMask *wxBitmap::GetMask() const
1242 {
1243     wxCHECK_MSG( Ok(), (wxMask *) NULL, wxT("invalid bitmap") );
1244
1245     return M_BMPDATA->m_mask;
1246 }
1247
1248 void wxBitmap::SetMask( wxMask *mask )
1249 {
1250     wxCHECK_RET( Ok(), wxT("invalid bitmap") );
1251
1252     if (M_BMPDATA->m_mask) delete M_BMPDATA->m_mask;
1253
1254     M_BMPDATA->m_mask = mask;
1255 }
1256
1257 bool wxBitmap::CopyFromIcon(const wxIcon& icon)
1258 {
1259     *this = icon;
1260     return TRUE;
1261 }
1262
1263 wxBitmap wxBitmap::GetSubBitmap( const wxRect& rect) const
1264 {
1265     wxCHECK_MSG( Ok() &&
1266                  (rect.x >= 0) && (rect.y >= 0) &&
1267                  (rect.x+rect.width <= M_BMPDATA->m_width) && (rect.y+rect.height <= M_BMPDATA->m_height),
1268                  wxNullBitmap, wxT("invalid bitmap or bitmap region") );
1269
1270     wxBitmap ret( rect.width, rect.height, M_BMPDATA->m_bpp );
1271     wxASSERT_MSG( ret.Ok(), wxT("GetSubBitmap error") );
1272
1273 #ifdef __WXGTK20__
1274     if (HasPixbuf())
1275     {
1276         GdkPixbuf *pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB,
1277                                            TRUE/*has_alpha*/,
1278                                            8, GetWidth(), GetHeight());
1279         ret.SetPixbuf(pixbuf);
1280         gdk_pixbuf_copy_area(M_BMPDATA->m_pixbuf,
1281                              rect.x, rect.y, rect.width, rect.height,
1282                              pixbuf, 0, 0);
1283     }
1284     else
1285 #endif // __WXGTK20__
1286     {
1287         if (ret.GetPixmap())
1288         {
1289             GdkGC *gc = gdk_gc_new( ret.GetPixmap() );
1290             gdk_draw_pixmap( ret.GetPixmap(), gc, GetPixmap(), rect.x, rect.y, 0, 0, rect.width, rect.height );
1291             gdk_gc_destroy( gc );
1292         }
1293         else
1294         {
1295             GdkGC *gc = gdk_gc_new( ret.GetBitmap() );
1296             GdkColor col;
1297             col.pixel = 0xFFFFFF;
1298             gdk_gc_set_foreground( gc, &col );
1299             col.pixel = 0;
1300             gdk_gc_set_background( gc, &col );
1301             gdk_wx_draw_bitmap( ret.GetBitmap(), gc, GetBitmap(), rect.x, rect.y, 0, 0, rect.width, rect.height );
1302             gdk_gc_destroy( gc );
1303         }
1304     }
1305
1306     if (GetMask())
1307     {
1308         wxMask *mask = new wxMask;
1309         mask->m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, rect.width, rect.height, 1 );
1310
1311         GdkGC *gc = gdk_gc_new( mask->m_bitmap );
1312         GdkColor col;
1313         col.pixel = 0xFFFFFF;
1314         gdk_gc_set_foreground( gc, &col );
1315         col.pixel = 0;
1316         gdk_gc_set_background( gc, &col );
1317         gdk_wx_draw_bitmap( mask->m_bitmap, gc, M_BMPDATA->m_mask->m_bitmap, rect.x, rect.y, 0, 0, rect.width, rect.height );
1318         gdk_gc_destroy( gc );
1319
1320         ret.SetMask( mask );
1321     }
1322
1323     return ret;
1324 }
1325
1326 bool wxBitmap::SaveFile( const wxString &name, int type, wxPalette *WXUNUSED(palette) )
1327 {
1328     wxCHECK_MSG( Ok(), FALSE, wxT("invalid bitmap") );
1329
1330     // Try to save the bitmap via wxImage handlers:
1331     {
1332         wxImage image = ConvertToImage();
1333         if (image.Ok()) return image.SaveFile( name, type );
1334     }
1335
1336     return FALSE;
1337 }
1338
1339 bool wxBitmap::LoadFile( const wxString &name, int type )
1340 {
1341     UnRef();
1342
1343     if (!wxFileExists(name))
1344         return FALSE;
1345
1346     GdkVisual *visual = wxTheApp->GetGdkVisual();
1347
1348     if (type == wxBITMAP_TYPE_XPM)
1349     {
1350         m_refData = new wxBitmapRefData();
1351
1352         GdkBitmap *mask = (GdkBitmap*) NULL;
1353
1354         M_BMPDATA->m_pixmap = gdk_pixmap_create_from_xpm
1355                               (
1356                                 wxGetRootWindow()->window,
1357                                 &mask,
1358                                 NULL,
1359                                 name.fn_str()
1360                               );
1361
1362         if (mask)
1363         {
1364            M_BMPDATA->m_mask = new wxMask();
1365            M_BMPDATA->m_mask->m_bitmap = mask;
1366         }
1367
1368         gdk_window_get_size( M_BMPDATA->m_pixmap, &(M_BMPDATA->m_width), &(M_BMPDATA->m_height) );
1369
1370         M_BMPDATA->m_bpp = visual->depth;
1371     }
1372     else // try if wxImage can load it
1373     {
1374         wxImage image;
1375         if ( !image.LoadFile( name, type ) || !image.Ok() )
1376             return FALSE;
1377
1378         *this = wxBitmap(image);
1379     }
1380
1381     return TRUE;
1382 }
1383
1384 wxPalette *wxBitmap::GetPalette() const
1385 {
1386     if (!Ok())
1387         return (wxPalette *) NULL;
1388
1389     return M_BMPDATA->m_palette;
1390 }
1391
1392 void wxBitmap::SetHeight( int height )
1393 {
1394     if (!m_refData)
1395         m_refData = new wxBitmapRefData();
1396
1397     M_BMPDATA->m_height = height;
1398 }
1399
1400 void wxBitmap::SetWidth( int width )
1401 {
1402     if (!m_refData)
1403         m_refData = new wxBitmapRefData();
1404
1405     M_BMPDATA->m_width = width;
1406 }
1407
1408 void wxBitmap::SetDepth( int depth )
1409 {
1410     if (!m_refData)
1411         m_refData = new wxBitmapRefData();
1412
1413     M_BMPDATA->m_bpp = depth;
1414 }
1415
1416 void wxBitmap::SetPixmap( GdkPixmap *pixmap )
1417 {
1418     if (!m_refData)
1419         m_refData = new wxBitmapRefData();
1420
1421     M_BMPDATA->m_pixmap = pixmap;
1422 }
1423
1424 void wxBitmap::SetBitmap( GdkPixmap *bitmap )
1425 {
1426     if (!m_refData)
1427         m_refData = new wxBitmapRefData();
1428
1429     M_BMPDATA->m_bitmap = bitmap;
1430 }
1431
1432 GdkPixmap *wxBitmap::GetPixmap() const
1433 {
1434     wxCHECK_MSG( Ok(), (GdkPixmap *) NULL, wxT("invalid bitmap") );
1435
1436 #ifdef __WXGTK20__
1437     // create the pixmap on the fly if we use Pixbuf representation:
1438     if (HasPixbuf() && !HasPixmap())
1439     {
1440         gdk_pixbuf_render_pixmap_and_mask(M_BMPDATA->m_pixbuf,
1441                                           &M_BMPDATA->m_pixmap,
1442                                           NULL /*mask*/,
1443                                           128 /*threshold*/);
1444     }
1445 #endif // __WXGTK20__
1446
1447     return M_BMPDATA->m_pixmap;
1448 }
1449
1450 bool wxBitmap::HasPixmap() const
1451 {
1452     wxCHECK_MSG( Ok(), false, wxT("invalid bitmap") );
1453
1454     return M_BMPDATA->m_pixmap != NULL;
1455 }
1456
1457 GdkBitmap *wxBitmap::GetBitmap() const
1458 {
1459     wxCHECK_MSG( Ok(), (GdkBitmap *) NULL, wxT("invalid bitmap") );
1460
1461     return M_BMPDATA->m_bitmap;
1462 }
1463
1464 #ifdef __WXGTK20__
1465 GdkPixbuf *wxBitmap::GetPixbuf() const
1466 {
1467     wxCHECK_MSG( Ok(), NULL, wxT("invalid bitmap") );
1468
1469     return M_BMPDATA->m_pixbuf;
1470 }
1471
1472 bool wxBitmap::HasPixbuf() const
1473 {
1474     wxCHECK_MSG( Ok(), false, wxT("invalid bitmap") );
1475
1476     return M_BMPDATA->m_pixbuf != NULL;
1477 }
1478
1479 void wxBitmap::SetPixbuf( GdkPixbuf *pixbuf )
1480 {
1481     if (!m_refData)
1482         m_refData = new wxBitmapRefData();
1483
1484     M_BMPDATA->m_pixbuf = pixbuf;
1485 }
1486
1487 void wxBitmap::PurgeOtherRepresentations(wxBitmap::Representation keep)
1488 {
1489     if (keep == Pixmap && HasPixbuf())
1490     {
1491         gdk_pixbuf_unref( M_BMPDATA->m_pixbuf );
1492         M_BMPDATA->m_pixbuf = NULL;
1493     }
1494     if (keep == Pixbuf && HasPixmap())
1495     {
1496         gdk_pixmap_unref( M_BMPDATA->m_pixmap );
1497         M_BMPDATA->m_pixmap = NULL;
1498     }
1499 }
1500
1501 #endif // __WXGTK20__