src/gtk1/bitmap.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/gtk/bitmap.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // RCS-ID:      $Id$
   6 // Copyright:   (c) 1998 Robert Roebling
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 // For compilers that support precompilation, includes "wx.h".
  11 #include "wx/wxprec.h"
  12
  13 #include "wx/defs.h"
  14
  15 #include "wx/bitmap.h"
  16 #include "wx/palette.h"
  17 #include "wx/icon.h"
  18 #include "wx/filefn.h"
  19 #include "wx/image.h"
  20 #include "wx/dcmemory.h"
  21 #include "wx/app.h"
  22
  23 #ifdef __WXGTK20__
  24 #include "wx/rawbmp.h"
  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     #include <gdk/gdkrgb.h>
  37 #endif // GTK+ 2.0/1.2
  38
  39 #include "wx/math.h"
  40
  41 extern void gdk_wx_draw_bitmap     (GdkDrawable  *drawable,
  42                           GdkGC               *gc,
  43                           GdkDrawable  *src,
  44                           gint                xsrc,
  45                           gint                ysrc,
  46                           gint                xdest,
  47                           gint                ydest,
  48                           gint                width,
  49                           gint                height);
  50
  51 //-----------------------------------------------------------------------------
  52 // data
  53 //-----------------------------------------------------------------------------
  54
  55 extern GtkWidget *wxGetRootWindow();
  56
  57 //-----------------------------------------------------------------------------
  58 // wxMask
  59 //-----------------------------------------------------------------------------
  60
  61 IMPLEMENT_DYNAMIC_CLASS(wxMask,wxObject)
  62
  63 wxMask::wxMask()
  64 {
  65     m_bitmap = (GdkBitmap *) NULL;
  66 }
  67
  68 wxMask::wxMask( const wxBitmap& bitmap, const wxColour& colour )
  69 {
  70     m_bitmap = (GdkBitmap *) NULL;
  71     Create( bitmap, colour );
  72 }
  73
  74 #if wxUSE_PALETTE
  75 wxMask::wxMask( const wxBitmap& bitmap, int paletteIndex )
  76 {
  77     m_bitmap = (GdkBitmap *) NULL;
  78     Create( bitmap, paletteIndex );
  79 }
  80 #endif // wxUSE_PALETTE
  81
  82 wxMask::wxMask( const wxBitmap& bitmap )
  83 {
  84     m_bitmap = (GdkBitmap *) NULL;
  85     Create( bitmap );
  86 }
  87
  88 wxMask::~wxMask()
  89 {
  90     if (m_bitmap)
  91         gdk_bitmap_unref( m_bitmap );
  92 }
  93
  94 bool wxMask::Create( const wxBitmap& bitmap,
  95                      const wxColour& colour )
  96 {
  97     if (m_bitmap)
  98     {
  99         gdk_bitmap_unref( m_bitmap );
 100         m_bitmap = (GdkBitmap*) NULL;
 101     }
 102
 103     wxImage image = bitmap.ConvertToImage();
 104     if (!image.Ok()) return false;
 105
 106     m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, image.GetWidth(), image.GetHeight(), 1 );
 107     GdkGC *gc = gdk_gc_new( m_bitmap );
 108
 109     GdkColor color;
 110     color.red = 65000;
 111     color.green = 65000;
 112     color.blue = 65000;
 113     color.pixel = 1;
 114     gdk_gc_set_foreground( gc, &color );
 115     gdk_gc_set_fill( gc, GDK_SOLID );
 116     gdk_draw_rectangle( m_bitmap, gc, TRUE, 0, 0, image.GetWidth(), image.GetHeight() );
 117
 118     unsigned char *data = image.GetData();
 119     int index = 0;
 120
 121     unsigned char red = colour.Red();
 122     unsigned char green = colour.Green();
 123     unsigned char blue = colour.Blue();
 124
 125     GdkVisual *visual = wxTheApp->GetGdkVisual();
 126
 127     int bpp = visual->depth;
 128     if ((bpp == 16) && (visual->red_mask != 0xf800))
 129         bpp = 15;
 130     if (bpp == 15)
 131     {
 132         red = red & 0xf8;
 133         green = green & 0xf8;
 134         blue = blue & 0xf8;
 135     }
 136     else if (bpp == 16)
 137     {
 138         red = red & 0xf8;
 139         green = green & 0xfc;
 140         blue = blue & 0xf8;
 141     }
 142     else if (bpp == 12)
 143     {
 144         red = red & 0xf0;
 145         green = green & 0xf0;
 146         blue = blue & 0xf0;
 147     }
 148
 149     color.red = 0;
 150     color.green = 0;
 151     color.blue = 0;
 152     color.pixel = 0;
 153     gdk_gc_set_foreground( gc, &color );
 154
 155     for (int j = 0; j < image.GetHeight(); j++)
 156     {
 157         int start_x = -1;
 158         int i;
 159         for (i = 0; i < image.GetWidth(); i++)
 160         {
 161             if ((data[index] == red) &&
 162                 (data[index+1] == green) &&
 163                 (data[index+2] == blue))
 164             {
 165                 if (start_x == -1)
 166                 start_x = i;
 167             }
 168             else
 169             {
 170                 if (start_x != -1)
 171                 {
 172                     gdk_draw_line( m_bitmap, gc, start_x, j, i-1, j );
 173                     start_x = -1;
 174                 }
 175             }
 176             index += 3;
 177         }
 178         if (start_x != -1)
 179             gdk_draw_line( m_bitmap, gc, start_x, j, i, j );
 180     }
 181
 182     gdk_gc_unref( gc );
 183
 184     return true;
 185 }
 186
 187 #if wxUSE_PALETTE
 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 #endif // wxUSE_PALETTE
 200
 201 bool wxMask::Create( const wxBitmap& bitmap )
 202 {
 203     if (m_bitmap)
 204     {
 205         gdk_bitmap_unref( m_bitmap );
 206         m_bitmap = (GdkBitmap*) NULL;
 207     }
 208
 209     if (!bitmap.Ok()) return false;
 210
 211     wxCHECK_MSG( bitmap.GetBitmap(), false, wxT("Cannot create mask from colour bitmap") );
 212
 213     m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, bitmap.GetWidth(), bitmap.GetHeight(), 1 );
 214
 215     if (!m_bitmap) return false;
 216
 217     GdkGC *gc = gdk_gc_new( m_bitmap );
 218
 219     gdk_wx_draw_bitmap( m_bitmap, gc, bitmap.GetBitmap(), 0, 0, 0, 0, bitmap.GetWidth(), bitmap.GetHeight() );
 220
 221     gdk_gc_unref( gc );
 222
 223     return true;
 224 }
 225
 226 GdkBitmap *wxMask::GetBitmap() const
 227 {
 228     return m_bitmap;
 229 }
 230
 231 //-----------------------------------------------------------------------------
 232 // wxBitmap
 233 //-----------------------------------------------------------------------------
 234
 235 class wxBitmapRefData: public wxObjectRefData
 236 {
 237 public:
 238     wxBitmapRefData();
 239     ~wxBitmapRefData();
 240
 241     GdkPixmap      *m_pixmap;
 242     GdkBitmap      *m_bitmap;
 243 #ifdef __WXGTK20__
 244     GdkPixbuf      *m_pixbuf;
 245 #endif
 246     wxMask         *m_mask;
 247     int             m_width;
 248     int             m_height;
 249     int             m_bpp;
 250     wxPalette      *m_palette;
 251 };
 252
 253 wxBitmapRefData::wxBitmapRefData()
 254 {
 255     m_pixmap = (GdkPixmap *) NULL;
 256     m_bitmap = (GdkBitmap *) NULL;
 257 #ifdef __WXGTK20__
 258     m_pixbuf = (GdkPixbuf *) NULL;
 259 #endif
 260     m_mask = (wxMask *) NULL;
 261     m_width = 0;
 262     m_height = 0;
 263     m_bpp = 0;
 264     m_palette = (wxPalette *) NULL;
 265 }
 266
 267 wxBitmapRefData::~wxBitmapRefData()
 268 {
 269     if (m_pixmap)
 270         gdk_pixmap_unref( m_pixmap );
 271     if (m_bitmap)
 272         gdk_bitmap_unref( m_bitmap );
 273 #ifdef __WXGTK20__
 274     if (m_pixbuf)
 275         gdk_pixbuf_unref( m_pixbuf );
 276 #endif
 277     delete m_mask;
 278 #if wxUSE_PALETTE
 279     delete m_palette;
 280 #endif // wxUSE_PALETTE
 281 }
 282
 283 //-----------------------------------------------------------------------------
 284
 285 #define M_BMPDATA ((wxBitmapRefData *)m_refData)
 286
 287 IMPLEMENT_DYNAMIC_CLASS(wxBitmap,wxGDIObject)
 288
 289 wxBitmap::wxBitmap()
 290 {
 291 }
 292
 293 wxBitmap::wxBitmap( int width, int height, int depth )
 294 {
 295     Create( width, height, depth );
 296 }
 297
 298 bool wxBitmap::Create( int width, int height, int depth )
 299 {
 300     UnRef();
 301
 302     if ( width <= 0 || height <= 0 )
 303     {
 304         return false;
 305     }
 306
 307     GdkVisual *visual = wxTheApp->GetGdkVisual();
 308
 309     if (depth == -1)
 310         depth = visual->depth;
 311
 312     wxCHECK_MSG( (depth == visual->depth) || (depth == 1) || (depth == 32), false,
 313                     wxT("invalid bitmap depth") )
 314
 315     m_refData = new wxBitmapRefData();
 316     M_BMPDATA->m_mask = (wxMask *) NULL;
 317     M_BMPDATA->m_width = width;
 318     M_BMPDATA->m_height = height;
 319     if (depth == 1)
 320     {
 321         M_BMPDATA->m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, width, height, 1 );
 322         M_BMPDATA->m_bpp = 1;
 323     }
 324 #ifdef __WXGTK20__
 325     else if (depth == 32)
 326     {
 327         M_BMPDATA->m_pixbuf = gdk_pixbuf_new( GDK_COLORSPACE_RGB, true,
 328                                               8, width, height);
 329         M_BMPDATA->m_bpp = 32;
 330     }
 331 #endif
 332     else
 333     {
 334         M_BMPDATA->m_pixmap = gdk_pixmap_new( wxGetRootWindow()->window, width, height, depth );
 335         M_BMPDATA->m_bpp = visual->depth;
 336     }
 337
 338     return Ok();
 339 }
 340
 341 bool wxBitmap::CreateFromXpm( const char **bits )
 342 {
 343     UnRef();
 344
 345     wxCHECK_MSG( bits != NULL, false, wxT("invalid bitmap data") )
 346
 347     GdkVisual *visual = wxTheApp->GetGdkVisual();
 348
 349     m_refData = new wxBitmapRefData();
 350
 351     GdkBitmap *mask = (GdkBitmap*) NULL;
 352
 353     M_BMPDATA->m_pixmap = gdk_pixmap_create_from_xpm_d( wxGetRootWindow()->window, &mask, NULL, (gchar **) bits );
 354
 355     wxCHECK_MSG( M_BMPDATA->m_pixmap, false, wxT("couldn't create pixmap") );
 356
 357     if (mask)
 358     {
 359         M_BMPDATA->m_mask = new wxMask();
 360         M_BMPDATA->m_mask->m_bitmap = mask;
 361     }
 362
 363     gdk_window_get_size( M_BMPDATA->m_pixmap, &(M_BMPDATA->m_width), &(M_BMPDATA->m_height) );
 364
 365     M_BMPDATA->m_bpp = visual->depth;  // Can we get a different depth from create_from_xpm_d() ?
 366
 367     return true;
 368 }
 369
 370 wxBitmap wxBitmap::Rescale( int clipx, int clipy, int clipwidth, int clipheight, int newx, int newy )
 371 {
 372     wxCHECK_MSG( Ok(), wxNullBitmap, wxT("invalid bitmap") );
 373
 374     if (newy==M_BMPDATA->m_width && newy==M_BMPDATA->m_height)
 375         return *this;
 376
 377     int width = wxMax(newx, 1);
 378     int height = wxMax(newy, 1);
 379     width = wxMin(width, clipwidth);
 380     height = wxMin(height, clipheight);
 381
 382     wxBitmap bmp;
 383
 384 #ifdef __WXGTK20__
 385     if (HasPixbuf())
 386     {
 387         bmp.SetWidth(width);
 388         bmp.SetHeight(height);
 389         bmp.SetDepth(GetDepth());
 390         bmp.SetPixbuf(gdk_pixbuf_new(GDK_COLORSPACE_RGB,
 391                                      gdk_pixbuf_get_has_alpha(GetPixbuf()),
 392                                      8, width, height));
 393         gdk_pixbuf_scale(GetPixbuf(), bmp.GetPixbuf(),
 394                          0, 0, width, height,
 395                          clipx, clipy,
 396                          (double)newx/GetWidth(), (double)newy/GetHeight(),
 397                          GDK_INTERP_BILINEAR);
 398     }
 399     else
 400 #endif // __WXGTK20__
 401     {
 402         GdkImage *img = (GdkImage*) NULL;
 403         if (GetPixmap())
 404             img = gdk_image_get( GetPixmap(), 0, 0, GetWidth(), GetHeight() );
 405         else if (GetBitmap())
 406             img = gdk_image_get( GetBitmap(), 0, 0, GetWidth(), GetHeight() );
 407         else
 408             wxFAIL_MSG( wxT("Ill-formed bitmap") );
 409
 410         wxCHECK_MSG( img, wxNullBitmap, wxT("couldn't create image") );
 411
 412         int bpp = -1;
 413
 414
 415         GdkGC *gc = NULL;
 416         GdkPixmap *dstpix = NULL;
 417         if (GetPixmap())
 418         {
 419             GdkVisual *visual = gdk_window_get_visual( GetPixmap() );
 420             if (visual == NULL)
 421                 visual = wxTheApp->GetGdkVisual();
 422
 423             bpp = visual->depth;
 424             bmp = wxBitmap(width,height,bpp);
 425             dstpix = bmp.GetPixmap();
 426             gc = gdk_gc_new( dstpix );
 427         }
 428
 429         char *dst = NULL;
 430         long dstbyteperline = 0;
 431
 432         if (GetBitmap())
 433         {
 434             bpp = 1;
 435             dstbyteperline = width/8*M_BMPDATA->m_bpp;
 436             if (width*M_BMPDATA->m_bpp % 8 != 0)
 437                 dstbyteperline++;
 438             dst = (char*) malloc(dstbyteperline*height);
 439         }
 440
 441         // be careful to use the right scaling factor
 442         float scx = (float)M_BMPDATA->m_width/(float)newx;
 443         float scy = (float)M_BMPDATA->m_height/(float)newy;
 444         // prepare accel-tables
 445         int *tablex = (int *)calloc(width,sizeof(int));
 446         int *tabley = (int *)calloc(height,sizeof(int));
 447
 448         // accel table filled with clipped values
 449         for (int x = 0; x < width; x++)
 450             tablex[x] = (int) (scx * (x+clipx));
 451         for (int y = 0; y < height; y++)
 452             tabley[y] = (int) (scy * (y+clipy));
 453
 454         // Main rescaling routine starts here
 455         for (int h = 0; h < height; h++)
 456         {
 457             char outbyte = 0;
 458             int old_x = -1;
 459             guint32 old_pixval = 0;
 460
 461             for (int w = 0; w < width; w++)
 462             {
 463                 guint32 pixval;
 464                 int x = tablex[w];
 465                 if (x == old_x)
 466                     pixval = old_pixval;
 467                 else
 468                 {
 469                     pixval = gdk_image_get_pixel( img, x, tabley[h] );
 470                     old_pixval = pixval;
 471                     old_x = x;
 472                 }
 473
 474                 if (bpp == 1)
 475                 {
 476                     if (!pixval)
 477                     {
 478                         char bit=1;
 479                         char shift = bit << (w % 8);
 480                         outbyte |= shift;
 481                     }
 482
 483                     if ((w+1)%8==0)
 484                     {
 485                         dst[h*dstbyteperline+w/8] = outbyte;
 486                         outbyte = 0;
 487                     }
 488                 }
 489                 else
 490                 {
 491                     GdkColor col;
 492                     col.pixel = pixval;
 493                     gdk_gc_set_foreground( gc, &col );
 494                     gdk_draw_point( dstpix, gc, w, h);
 495                 }
 496             }
 497
 498             // do not forget the last byte
 499             if ((bpp == 1) && (width % 8 != 0))
 500                 dst[h*dstbyteperline+width/8] = outbyte;
 501         }
 502
 503         gdk_image_destroy( img );
 504         if (gc) gdk_gc_unref( gc );
 505
 506         if (bpp == 1)
 507         {
 508             bmp = wxBitmap( (const char *)dst, width, height, 1 );
 509             free( dst );
 510         }
 511
 512         if (GetMask())
 513         {
 514             dstbyteperline = width/8;
 515             if (width % 8 != 0)
 516                 dstbyteperline++;
 517             dst = (char*) malloc(dstbyteperline*height);
 518             img = gdk_image_get( GetMask()->GetBitmap(), 0, 0, GetWidth(), GetHeight() );
 519
 520             for (int h = 0; h < height; h++)
 521             {
 522                 char outbyte = 0;
 523                 int old_x = -1;
 524                 guint32 old_pixval = 0;
 525
 526                 for (int w = 0; w < width; w++)
 527                 {
 528                     guint32 pixval;
 529                     int x = tablex[w];
 530                     if (x == old_x)
 531                         pixval = old_pixval;
 532                     else
 533                     {
 534                         pixval = gdk_image_get_pixel( img, x, tabley[h] );
 535                         old_pixval = pixval;
 536                         old_x = x;
 537                     }
 538
 539                     if (pixval)
 540                     {
 541                         char bit=1;
 542                         char shift = bit << (w % 8);
 543                         outbyte |= shift;
 544                     }
 545
 546                     if ((w+1)%8 == 0)
 547                     {
 548                         dst[h*dstbyteperline+w/8] = outbyte;
 549                         outbyte = 0;
 550                     }
 551                 }
 552
 553                 // do not forget the last byte
 554                 if (width % 8 != 0)
 555                     dst[h*dstbyteperline+width/8] = outbyte;
 556             }
 557             wxMask* mask = new wxMask;
 558             mask->m_bitmap = gdk_bitmap_create_from_data( wxGetRootWindow()->window, (gchar *) dst, width, height );
 559             bmp.SetMask(mask);
 560
 561             free( dst );
 562             gdk_image_destroy( img );
 563         }
 564
 565         free( tablex );
 566         free( tabley );
 567     }
 568
 569     return bmp;
 570 }
 571
 572 bool wxBitmap::CreateFromImage(const wxImage& image, int depth)
 573 {
 574     UnRef();
 575
 576     wxCHECK_MSG( image.Ok(), false, wxT("invalid image") )
 577     wxCHECK_MSG( depth == -1 || depth == 1, false, wxT("invalid bitmap depth") )
 578
 579     if (image.GetWidth() <= 0 || image.GetHeight() <= 0)
 580         return false;
 581
 582     m_refData = new wxBitmapRefData();
 583
 584     if (depth == 1)
 585     {
 586         return CreateFromImageAsBitmap(image);
 587     }
 588     else
 589     {
 590 #ifdef __WXGTK20__
 591         if (image.HasAlpha())
 592             return CreateFromImageAsPixbuf(image);
 593 #endif
 594         return CreateFromImageAsPixmap(image);
 595     }
 596 }
 597
 598 // conversion to mono bitmap:
 599 bool wxBitmap::CreateFromImageAsBitmap(const wxImage& img)
 600 {
 601     // convert alpha channel to mask, if it is present:
 602     wxImage image(img);
 603     image.ConvertAlphaToMask();
 604
 605     int width = image.GetWidth();
 606     int height = image.GetHeight();
 607
 608     SetHeight( height );
 609     SetWidth( width );
 610
 611     SetBitmap( gdk_pixmap_new( wxGetRootWindow()->window, width, height, 1 ) );
 612
 613     SetDepth( 1 );
 614
 615     GdkVisual *visual = wxTheApp->GetGdkVisual();
 616
 617     // Create picture image
 618
 619     unsigned char *data_data = (unsigned char*)malloc( ((width >> 3)+8) * height );
 620
 621     GdkImage *data_image =
 622         gdk_image_new_bitmap( visual, data_data, width, height );
 623
 624     // Create mask image
 625
 626     GdkImage *mask_image = (GdkImage*) NULL;
 627
 628     if (image.HasMask())
 629     {
 630         unsigned char *mask_data = (unsigned char*)malloc( ((width >> 3)+8) * height );
 631
 632         mask_image =  gdk_image_new_bitmap( visual, mask_data, width, height );
 633
 634         wxMask *mask = new wxMask();
 635         mask->m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, width, height, 1 );
 636
 637         SetMask( mask );
 638     }
 639
 640     int r_mask = image.GetMaskRed();
 641     int g_mask = image.GetMaskGreen();
 642     int b_mask = image.GetMaskBlue();
 643
 644     unsigned char* data = image.GetData();
 645
 646     int index = 0;
 647     for (int y = 0; y < height; y++)
 648     {
 649         for (int x = 0; x < width; x++)
 650         {
 651             int r = data[index];
 652             index++;
 653             int g = data[index];
 654             index++;
 655             int b = data[index];
 656             index++;
 657
 658             if (image.HasMask())
 659             {
 660                 if ((r == r_mask) && (b == b_mask) && (g == g_mask))
 661                     gdk_image_put_pixel( mask_image, x, y, 1 );
 662                 else
 663                     gdk_image_put_pixel( mask_image, x, y, 0 );
 664             }
 665
 666             if ((r == 255) && (b == 255) && (g == 255))
 667                 gdk_image_put_pixel( data_image, x, y, 1 );
 668             else
 669                 gdk_image_put_pixel( data_image, x, y, 0 );
 670
 671         } // for
 672     }  // for
 673
 674     // Blit picture
 675
 676     GdkGC *data_gc = gdk_gc_new( GetBitmap() );
 677
 678     gdk_draw_image( GetBitmap(), data_gc, data_image, 0, 0, 0, 0, width, height );
 679
 680     gdk_image_destroy( data_image );
 681     gdk_gc_unref( data_gc );
 682
 683     // Blit mask
 684
 685     if (image.HasMask())
 686     {
 687         GdkGC *mask_gc = gdk_gc_new( GetMask()->GetBitmap() );
 688
 689         gdk_draw_image( GetMask()->GetBitmap(), mask_gc, mask_image, 0, 0, 0, 0, width, height );
 690
 691         gdk_image_destroy( mask_image );
 692         gdk_gc_unref( mask_gc );
 693     }
 694
 695     return true;
 696 }
 697
 698 // conversion to colour bitmap:
 699 bool wxBitmap::CreateFromImageAsPixmap(const wxImage& img)
 700 {
 701     // convert alpha channel to mask, if it is present:
 702     wxImage image(img);
 703     image.ConvertAlphaToMask();
 704
 705     int width = image.GetWidth();
 706     int height = image.GetHeight();
 707
 708     SetHeight( height );
 709     SetWidth( width );
 710
 711     SetPixmap( gdk_pixmap_new( wxGetRootWindow()->window, width, height, -1 ) );
 712
 713     GdkVisual *visual = wxTheApp->GetGdkVisual();
 714
 715     int bpp = visual->depth;
 716
 717     SetDepth( bpp );
 718
 719     if ((bpp == 16) && (visual->red_mask != 0xf800))
 720         bpp = 15;
 721     else if (bpp < 8)
 722         bpp = 8;
 723
 724     // We handle 8-bit bitmaps ourselves using the colour cube, 12-bit
 725     // visuals are not supported by GDK so we do these ourselves, too.
 726     // 15-bit and 16-bit should actually work and 24-bit certainly does.
 727 #ifdef __sgi
 728     if (!image.HasMask() && (bpp > 16))
 729 #else
 730     if (!image.HasMask() && (bpp > 12))
 731 #endif
 732     {
 733         static bool s_hasInitialized = false;
 734
 735         if (!s_hasInitialized)
 736         {
 737             gdk_rgb_init();
 738             s_hasInitialized = true;
 739         }
 740
 741         GdkGC *gc = gdk_gc_new( GetPixmap() );
 742
 743         gdk_draw_rgb_image( GetPixmap(),
 744                             gc,
 745                             0, 0,
 746                             width, height,
 747                             GDK_RGB_DITHER_NONE,
 748                             image.GetData(),
 749                             width*3 );
 750
 751         gdk_gc_unref( gc );
 752         return true;
 753     }
 754
 755     // Create picture image
 756
 757     GdkImage *data_image =
 758         gdk_image_new( GDK_IMAGE_FASTEST, visual, width, height );
 759
 760     // Create mask image
 761
 762     GdkImage *mask_image = (GdkImage*) NULL;
 763
 764     if (image.HasMask())
 765     {
 766         unsigned char *mask_data = (unsigned char*)malloc( ((width >> 3)+8) * height );
 767
 768         mask_image =  gdk_image_new_bitmap( visual, mask_data, width, height );
 769
 770         wxMask *mask = new wxMask();
 771         mask->m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, width, height, 1 );
 772
 773         SetMask( mask );
 774     }
 775
 776     // Render
 777
 778     enum byte_order { RGB, RBG, BRG, BGR, GRB, GBR };
 779     byte_order b_o = RGB;
 780
 781     if (bpp > 8)
 782     {
 783         if ((visual->red_mask > visual->green_mask) && (visual->green_mask > visual->blue_mask))      b_o = RGB;
 784         else if ((visual->red_mask > visual->blue_mask) && (visual->blue_mask > visual->green_mask))  b_o = RBG;
 785         else if ((visual->blue_mask > visual->red_mask) && (visual->red_mask > visual->green_mask))   b_o = BRG;
 786         else if ((visual->blue_mask > visual->green_mask) && (visual->green_mask > visual->red_mask)) b_o = BGR;
 787         else if ((visual->green_mask > visual->red_mask) && (visual->red_mask > visual->blue_mask))   b_o = GRB;
 788         else if ((visual->green_mask > visual->blue_mask) && (visual->blue_mask > visual->red_mask))  b_o = GBR;
 789     }
 790
 791     int r_mask = image.GetMaskRed();
 792     int g_mask = image.GetMaskGreen();
 793     int b_mask = image.GetMaskBlue();
 794
 795     unsigned char* data = image.GetData();
 796
 797     int index = 0;
 798     for (int y = 0; y < height; y++)
 799     {
 800         for (int x = 0; x < width; x++)
 801         {
 802             int r = data[index];
 803             index++;
 804             int g = data[index];
 805             index++;
 806             int b = data[index];
 807             index++;
 808
 809             if (image.HasMask())
 810             {
 811                 if ((r == r_mask) && (b == b_mask) && (g == g_mask))
 812                     gdk_image_put_pixel( mask_image, x, y, 1 );
 813                 else
 814                     gdk_image_put_pixel( mask_image, x, y, 0 );
 815             }
 816
 817             switch (bpp)
 818             {
 819                 case 8:
 820                 {
 821                     int pixel = -1;
 822                     if (wxTheApp->m_colorCube)
 823                     {
 824                         pixel = wxTheApp->m_colorCube[ ((r & 0xf8) << 7) + ((g & 0xf8) << 2) + ((b & 0xf8) >> 3) ];
 825                     }
 826                     else
 827                     {
 828                         GdkColormap *cmap = gtk_widget_get_default_colormap();
 829                         GdkColor *colors = cmap->colors;
 830                         int max = 3 * (65536);
 831
 832                         for (int i = 0; i < cmap->size; i++)
 833                         {
 834                             int rdiff = (r << 8) - colors[i].red;
 835                             int gdiff = (g << 8) - colors[i].green;
 836                             int bdiff = (b << 8) - colors[i].blue;
 837                             int sum = ABS (rdiff) + ABS (gdiff) + ABS (bdiff);
 838                             if (sum < max) { pixel = i; max = sum; }
 839                         }
 840                     }
 841
 842                     gdk_image_put_pixel( data_image, x, y, pixel );
 843
 844                     break;
 845                 }
 846                 case 12:  // SGI only
 847                 {
 848                     guint32 pixel = 0;
 849                     switch (b_o)
 850                     {
 851                         case RGB: pixel = ((r & 0xf0) << 4) | (g & 0xf0) | ((b & 0xf0) >> 4); break;
 852                         case RBG: pixel = ((r & 0xf0) << 4) | (b & 0xf0) | ((g & 0xf0) >> 4); break;
 853                         case GRB: pixel = ((g & 0xf0) << 4) | (r & 0xf0) | ((b & 0xf0) >> 4); break;
 854                         case GBR: pixel = ((g & 0xf0) << 4) | (b & 0xf0) | ((r & 0xf0) >> 4); break;
 855                         case BRG: pixel = ((b & 0xf0) << 4) | (r & 0xf0) | ((g & 0xf0) >> 4); break;
 856                         case BGR: pixel = ((b & 0xf0) << 4) | (g & 0xf0) | ((r & 0xf0) >> 4); break;
 857                     }
 858                     gdk_image_put_pixel( data_image, x, y, pixel );
 859                     break;
 860                 }
 861                 case 15:
 862                 {
 863                     guint32 pixel = 0;
 864                     switch (b_o)
 865                     {
 866                         case RGB: pixel = ((r & 0xf8) << 7) | ((g & 0xf8) << 2) | ((b & 0xf8) >> 3); break;
 867                         case RBG: pixel = ((r & 0xf8) << 7) | ((b & 0xf8) << 2) | ((g & 0xf8) >> 3); break;
 868                         case GRB: pixel = ((g & 0xf8) << 7) | ((r & 0xf8) << 2) | ((b & 0xf8) >> 3); break;
 869                         case GBR: pixel = ((g & 0xf8) << 7) | ((b & 0xf8) << 2) | ((r & 0xf8) >> 3); break;
 870                         case BRG: pixel = ((b & 0xf8) << 7) | ((r & 0xf8) << 2) | ((g & 0xf8) >> 3); break;
 871                         case BGR: pixel = ((b & 0xf8) << 7) | ((g & 0xf8) << 2) | ((r & 0xf8) >> 3); break;
 872                     }
 873                     gdk_image_put_pixel( data_image, x, y, pixel );
 874                     break;
 875                 }
 876                 case 16:
 877                 {
 878                     // I actually don't know if for 16-bit displays, it is alway the green
 879                     // component or the second component which has 6 bits.
 880                     guint32 pixel = 0;
 881                     switch (b_o)
 882                     {
 883                         case RGB: pixel = ((r & 0xf8) << 8) | ((g & 0xfc) << 3) | ((b & 0xf8) >> 3); break;
 884                         case RBG: pixel = ((r & 0xf8) << 8) | ((b & 0xfc) << 3) | ((g & 0xf8) >> 3); break;
 885                         case GRB: pixel = ((g & 0xf8) << 8) | ((r & 0xfc) << 3) | ((b & 0xf8) >> 3); break;
 886                         case GBR: pixel = ((g & 0xf8) << 8) | ((b & 0xfc) << 3) | ((r & 0xf8) >> 3); break;
 887                         case BRG: pixel = ((b & 0xf8) << 8) | ((r & 0xfc) << 3) | ((g & 0xf8) >> 3); break;
 888                         case BGR: pixel = ((b & 0xf8) << 8) | ((g & 0xfc) << 3) | ((r & 0xf8) >> 3); break;
 889                     }
 890                     gdk_image_put_pixel( data_image, x, y, pixel );
 891                     break;
 892                 }
 893                 case 32:
 894                 case 24:
 895                 {
 896                     guint32 pixel = 0;
 897                     switch (b_o)
 898                     {
 899                         case RGB: pixel = (r << 16) | (g << 8) | b; break;
 900                         case RBG: pixel = (r << 16) | (b << 8) | g; break;
 901                         case BRG: pixel = (b << 16) | (r << 8) | g; break;
 902                         case BGR: pixel = (b << 16) | (g << 8) | r; break;
 903                         case GRB: pixel = (g << 16) | (r << 8) | b; break;
 904                         case GBR: pixel = (g << 16) | (b << 8) | r; break;
 905                     }
 906                     gdk_image_put_pixel( data_image, x, y, pixel );
 907                     break;
 908                 }
 909                 default: break;
 910             }
 911         } // for
 912     }  // for
 913
 914     // Blit picture
 915
 916     GdkGC *data_gc = gdk_gc_new( GetPixmap() );
 917
 918     gdk_draw_image( GetPixmap(), data_gc, data_image, 0, 0, 0, 0, width, height );
 919
 920     gdk_image_destroy( data_image );
 921     gdk_gc_unref( data_gc );
 922
 923     // Blit mask
 924
 925     if (image.HasMask())
 926     {
 927         GdkGC *mask_gc = gdk_gc_new( GetMask()->GetBitmap() );
 928
 929         gdk_draw_image( GetMask()->GetBitmap(), mask_gc, mask_image, 0, 0, 0, 0, width, height );
 930
 931         gdk_image_destroy( mask_image );
 932         gdk_gc_unref( mask_gc );
 933     }
 934
 935     return true;
 936 }
 937
 938 #ifdef __WXGTK20__
 939 bool wxBitmap::CreateFromImageAsPixbuf(const wxImage& image)
 940 {
 941     int width = image.GetWidth();
 942     int height = image.GetHeight();
 943
 944     GdkPixbuf *pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB,
 945                                        image.HasAlpha(),
 946                                        8 /* bits per sample */,
 947                                        width, height);
 948     if (!pixbuf)
 949         return false;
 950
 951     wxASSERT( image.HasAlpha() ); // for now
 952     wxASSERT( gdk_pixbuf_get_n_channels(pixbuf) == 4 );
 953     wxASSERT( gdk_pixbuf_get_width(pixbuf) == width );
 954     wxASSERT( gdk_pixbuf_get_height(pixbuf) == height );
 955
 956     M_BMPDATA->m_pixbuf = pixbuf;
 957     SetHeight(height);
 958     SetWidth(width);
 959     SetDepth(wxTheApp->GetGdkVisual()->depth);
 960
 961     // Copy the data:
 962     unsigned char *in = image.GetData();
 963     unsigned char *out = gdk_pixbuf_get_pixels(pixbuf);
 964     unsigned char *alpha = image.GetAlpha();
 965
 966     int rowinc = gdk_pixbuf_get_rowstride(pixbuf) - 4 * width;
 967
 968     for (int y = 0; y < height; y++, out += rowinc)
 969     {
 970         for (int x = 0; x < width; x++, alpha++, out += 4, in += 3)
 971         {
 972             out[0] = in[0];
 973             out[1] = in[1];
 974             out[2] = in[2];
 975             out[3] = *alpha;
 976         }
 977     }
 978
 979     return true;
 980 }
 981 #endif // __WXGTK20__
 982
 983 wxImage wxBitmap::ConvertToImage() const
 984 {
 985     wxImage image;
 986
 987     wxCHECK_MSG( Ok(), wxNullImage, wxT("invalid bitmap") );
 988
 989     image.Create(GetWidth(), GetHeight());
 990     unsigned char *data = image.GetData();
 991
 992     if (!data)
 993     {
 994         wxFAIL_MSG( wxT("couldn't create image") );
 995         return wxNullImage;
 996     }
 997
 998 #ifdef __WXGTK20__
 999     if (HasPixbuf())
1000     {
1001         GdkPixbuf *pixbuf = GetPixbuf();
1002         wxASSERT( gdk_pixbuf_get_has_alpha(pixbuf) );
1003
1004         int w = GetWidth();
1005         int h = GetHeight();
1006
1007         image.SetAlpha();
1008
1009         unsigned char *alpha = image.GetAlpha();
1010         unsigned char *in = gdk_pixbuf_get_pixels(pixbuf);
1011         unsigned char *out = data;
1012         int rowinc = gdk_pixbuf_get_rowstride(pixbuf) - 4 * w;
1013
1014         for (int y = 0; y < h; y++, in += rowinc)
1015         {
1016             for (int x = 0; x < w; x++, in += 4, out += 3, alpha++)
1017             {
1018                 out[0] = in[0];
1019                 out[1] = in[1];
1020                 out[2] = in[2];
1021                 *alpha = in[3];
1022             }
1023         }
1024     }
1025     else
1026 #endif // __WXGTK20__
1027     {
1028         // the colour used as transparent one in wxImage and the one it is
1029         // replaced with when it really occurs in the bitmap
1030         static const int MASK_RED = 1;
1031         static const int MASK_GREEN = 2;
1032         static const int MASK_BLUE = 3;
1033         static const int MASK_BLUE_REPLACEMENT = 2;
1034
1035         GdkImage *gdk_image = (GdkImage*) NULL;
1036
1037         if (HasPixmap())
1038         {
1039             gdk_image = gdk_image_get( GetPixmap(),
1040                                        0, 0,
1041                                        GetWidth(), GetHeight() );
1042         }
1043         else if (GetBitmap())
1044         {
1045             gdk_image = gdk_image_get( GetBitmap(),
1046                                        0, 0,
1047                                        GetWidth(), GetHeight() );
1048         }
1049         else
1050         {
1051             wxFAIL_MSG( wxT("Ill-formed bitmap") );
1052         }
1053
1054         wxCHECK_MSG( gdk_image, wxNullImage, wxT("couldn't create image") );
1055
1056         GdkImage *gdk_image_mask = (GdkImage*) NULL;
1057         if (GetMask())
1058         {
1059             gdk_image_mask = gdk_image_get( GetMask()->GetBitmap(),
1060                                             0, 0,
1061                                             GetWidth(), GetHeight() );
1062
1063             image.SetMaskColour( MASK_RED, MASK_GREEN, MASK_BLUE );
1064         }
1065
1066         int bpp = -1;
1067         int red_shift_right = 0;
1068         int green_shift_right = 0;
1069         int blue_shift_right = 0;
1070         int red_shift_left = 0;
1071         int green_shift_left = 0;
1072         int blue_shift_left = 0;
1073         bool use_shift = false;
1074
1075         if (GetPixmap())
1076         {
1077             GdkVisual *visual = gdk_window_get_visual( GetPixmap() );
1078             if (visual == NULL)
1079                 visual = wxTheApp->GetGdkVisual();
1080
1081             bpp = visual->depth;
1082             if (bpp == 16)
1083                 bpp = visual->red_prec + visual->green_prec + visual->blue_prec;
1084             red_shift_right = visual->red_shift;
1085             red_shift_left = 8-visual->red_prec;
1086             green_shift_right = visual->green_shift;
1087             green_shift_left = 8-visual->green_prec;
1088             blue_shift_right = visual->blue_shift;
1089             blue_shift_left = 8-visual->blue_prec;
1090
1091             use_shift = (visual->type == GDK_VISUAL_TRUE_COLOR) || (visual->type == GDK_VISUAL_DIRECT_COLOR);
1092         }
1093         if (GetBitmap())
1094         {
1095             bpp = 1;
1096         }
1097
1098
1099         GdkColormap *cmap = gtk_widget_get_default_colormap();
1100
1101         long pos = 0;
1102         for (int j = 0; j < GetHeight(); j++)
1103         {
1104             for (int i = 0; i < GetWidth(); i++)
1105             {
1106                 wxUint32 pixel = gdk_image_get_pixel( gdk_image, i, j );
1107                 if (bpp == 1)
1108                 {
1109                     if (pixel == 0)
1110                     {
1111                         data[pos]   = 0;
1112                         data[pos+1] = 0;
1113                         data[pos+2] = 0;
1114                     }
1115                     else
1116                     {
1117                         data[pos]   = 255;
1118                         data[pos+1] = 255;
1119                         data[pos+2] = 255;
1120                     }
1121                 }
1122                 else if (use_shift)
1123                 {
1124                     data[pos] =   (pixel >> red_shift_right)   << red_shift_left;
1125                     data[pos+1] = (pixel >> green_shift_right) << green_shift_left;
1126                     data[pos+2] = (pixel >> blue_shift_right)  << blue_shift_left;
1127                 }
1128                 else if (cmap->colors)
1129                 {
1130                     data[pos] =   cmap->colors[pixel].red   >> 8;
1131                     data[pos+1] = cmap->colors[pixel].green >> 8;
1132                     data[pos+2] = cmap->colors[pixel].blue  >> 8;
1133                 }
1134                 else
1135                 {
1136                     wxFAIL_MSG( wxT("Image conversion failed. Unknown visual type.") );
1137                 }
1138
1139                 if (gdk_image_mask)
1140                 {
1141                     int mask_pixel = gdk_image_get_pixel( gdk_image_mask, i, j );
1142                     if (mask_pixel == 0)
1143                     {
1144                         data[pos] = MASK_RED;
1145                         data[pos+1] = MASK_GREEN;
1146                         data[pos+2] = MASK_BLUE;
1147                     }
1148                     else if ( data[pos] == MASK_RED &&
1149                                 data[pos+1] == MASK_GREEN &&
1150                                     data[pos+2] == MASK_BLUE )
1151                     {
1152                         data[pos+2] = MASK_BLUE_REPLACEMENT;
1153                     }
1154                 }
1155
1156                 pos += 3;
1157             }
1158         }
1159
1160         gdk_image_destroy( gdk_image );
1161         if (gdk_image_mask) gdk_image_destroy( gdk_image_mask );
1162     }
1163
1164     return image;
1165 }
1166
1167 wxBitmap::wxBitmap( const wxBitmap& bmp )
1168         : wxBitmapBase()
1169 {
1170     Ref( bmp );
1171 }
1172
1173 wxBitmap::wxBitmap( const wxString &filename, wxBitmapType type )
1174 {
1175     LoadFile( filename, type );
1176 }
1177
1178 wxBitmap::wxBitmap( const char bits[], int width, int height, int WXUNUSED(depth))
1179 {
1180     if ( width > 0 && height > 0 )
1181     {
1182         m_refData = new wxBitmapRefData();
1183
1184         M_BMPDATA->m_mask = (wxMask *) NULL;
1185         M_BMPDATA->m_bitmap = gdk_bitmap_create_from_data
1186                               (
1187                                 wxGetRootWindow()->window,
1188                                 (gchar *) bits,
1189                                 width,
1190                                 height
1191                               );
1192         M_BMPDATA->m_width = width;
1193         M_BMPDATA->m_height = height;
1194         M_BMPDATA->m_bpp = 1;
1195
1196         wxASSERT_MSG( M_BMPDATA->m_bitmap, wxT("couldn't create bitmap") );
1197     }
1198 }
1199
1200 wxBitmap::~wxBitmap()
1201 {
1202 }
1203
1204 wxBitmap& wxBitmap::operator = ( const wxBitmap& bmp )
1205 {
1206     if ( m_refData != bmp.m_refData )
1207         Ref( bmp );
1208
1209     return *this;
1210 }
1211
1212 bool wxBitmap::operator == ( const wxBitmap& bmp ) const
1213 {
1214     return m_refData == bmp.m_refData;
1215 }
1216
1217 bool wxBitmap::operator != ( const wxBitmap& bmp ) const
1218 {
1219     return m_refData != bmp.m_refData;
1220 }
1221
1222 bool wxBitmap::Ok() const
1223 {
1224     return (m_refData != NULL) &&
1225            (
1226 #ifdef __WXGTK20__
1227               M_BMPDATA->m_pixbuf ||
1228 #endif
1229               M_BMPDATA->m_bitmap || M_BMPDATA->m_pixmap
1230            );
1231 }
1232
1233 int wxBitmap::GetHeight() const
1234 {
1235     wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1236
1237     return M_BMPDATA->m_height;
1238 }
1239
1240 int wxBitmap::GetWidth() const
1241 {
1242     wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1243
1244     return M_BMPDATA->m_width;
1245 }
1246
1247 int wxBitmap::GetDepth() const
1248 {
1249     wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1250
1251     return M_BMPDATA->m_bpp;
1252 }
1253
1254 wxMask *wxBitmap::GetMask() const
1255 {
1256     wxCHECK_MSG( Ok(), (wxMask *) NULL, wxT("invalid bitmap") );
1257
1258     return M_BMPDATA->m_mask;
1259 }
1260
1261 void wxBitmap::SetMask( wxMask *mask )
1262 {
1263     wxCHECK_RET( Ok(), wxT("invalid bitmap") );
1264
1265     if (M_BMPDATA->m_mask) delete M_BMPDATA->m_mask;
1266
1267     M_BMPDATA->m_mask = mask;
1268 }
1269
1270 bool wxBitmap::CopyFromIcon(const wxIcon& icon)
1271 {
1272     *this = icon;
1273     return true;
1274 }
1275
1276 wxBitmap wxBitmap::GetSubBitmap( const wxRect& rect) const
1277 {
1278     wxCHECK_MSG( Ok() &&
1279                  (rect.x >= 0) && (rect.y >= 0) &&
1280                  (rect.x+rect.width <= M_BMPDATA->m_width) && (rect.y+rect.height <= M_BMPDATA->m_height),
1281                  wxNullBitmap, wxT("invalid bitmap or bitmap region") );
1282
1283     wxBitmap ret( rect.width, rect.height, M_BMPDATA->m_bpp );
1284     wxASSERT_MSG( ret.Ok(), wxT("GetSubBitmap error") );
1285
1286 #ifdef __WXGTK20__
1287     if (HasPixbuf())
1288     {
1289         GdkPixbuf *pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB,
1290                                            gdk_pixbuf_get_has_alpha(GetPixbuf()),
1291                                            8, rect.width, rect.height);
1292         ret.SetPixbuf(pixbuf);
1293         gdk_pixbuf_copy_area(GetPixbuf(),
1294                              rect.x, rect.y, rect.width, rect.height,
1295                              pixbuf, 0, 0);
1296     }
1297     else
1298 #endif // __WXGTK20__
1299     {
1300         if (ret.GetPixmap())
1301         {
1302             GdkGC *gc = gdk_gc_new( ret.GetPixmap() );
1303             gdk_draw_pixmap( ret.GetPixmap(), gc, GetPixmap(), rect.x, rect.y, 0, 0, rect.width, rect.height );
1304             gdk_gc_destroy( gc );
1305         }
1306         else
1307         {
1308             GdkGC *gc = gdk_gc_new( ret.GetBitmap() );
1309             GdkColor col;
1310             col.pixel = 0xFFFFFF;
1311             gdk_gc_set_foreground( gc, &col );
1312             col.pixel = 0;
1313             gdk_gc_set_background( gc, &col );
1314             gdk_wx_draw_bitmap( ret.GetBitmap(), gc, GetBitmap(), rect.x, rect.y, 0, 0, rect.width, rect.height );
1315             gdk_gc_destroy( gc );
1316         }
1317     }
1318
1319     if (GetMask())
1320     {
1321         wxMask *mask = new wxMask;
1322         mask->m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, rect.width, rect.height, 1 );
1323
1324         GdkGC *gc = gdk_gc_new( mask->m_bitmap );
1325         GdkColor col;
1326         col.pixel = 0xFFFFFF;
1327         gdk_gc_set_foreground( gc, &col );
1328         col.pixel = 0;
1329         gdk_gc_set_background( gc, &col );
1330         gdk_wx_draw_bitmap( mask->m_bitmap, gc, M_BMPDATA->m_mask->m_bitmap, rect.x, rect.y, 0, 0, rect.width, rect.height );
1331         gdk_gc_destroy( gc );
1332
1333         ret.SetMask( mask );
1334     }
1335
1336     return ret;
1337 }
1338
1339 bool wxBitmap::SaveFile( const wxString &name, wxBitmapType type, const wxPalette *WXUNUSED(palette) ) const
1340 {
1341     wxCHECK_MSG( Ok(), false, wxT("invalid bitmap") );
1342
1343     // Try to save the bitmap via wxImage handlers:
1344     {
1345         wxImage image = ConvertToImage();
1346         if (image.Ok()) return image.SaveFile( name, type );
1347     }
1348
1349     return false;
1350 }
1351
1352 bool wxBitmap::LoadFile( const wxString &name, wxBitmapType type )
1353 {
1354     UnRef();
1355
1356     if (!wxFileExists(name))
1357         return false;
1358
1359     GdkVisual *visual = wxTheApp->GetGdkVisual();
1360
1361     if (type == wxBITMAP_TYPE_XPM)
1362     {
1363         m_refData = new wxBitmapRefData();
1364
1365         GdkBitmap *mask = (GdkBitmap*) NULL;
1366
1367         M_BMPDATA->m_pixmap = gdk_pixmap_create_from_xpm
1368                               (
1369                                 wxGetRootWindow()->window,
1370                                 &mask,
1371                                 NULL,
1372                                 name.fn_str()
1373                               );
1374
1375         if (mask)
1376         {
1377            M_BMPDATA->m_mask = new wxMask();
1378            M_BMPDATA->m_mask->m_bitmap = mask;
1379         }
1380
1381         gdk_window_get_size( M_BMPDATA->m_pixmap, &(M_BMPDATA->m_width), &(M_BMPDATA->m_height) );
1382
1383         M_BMPDATA->m_bpp = visual->depth;
1384     }
1385     else // try if wxImage can load it
1386     {
1387         wxImage image;
1388         if ( !image.LoadFile( name, type ) || !image.Ok() )
1389             return false;
1390
1391         *this = wxBitmap(image);
1392     }
1393
1394     return true;
1395 }
1396
1397 #if wxUSE_PALETTE
1398 wxPalette *wxBitmap::GetPalette() const
1399 {
1400     if (!Ok())
1401         return (wxPalette *) NULL;
1402
1403     return M_BMPDATA->m_palette;
1404 }
1405
1406 void wxBitmap::SetPalette(const wxPalette& WXUNUSED(palette))
1407 {
1408     // TODO
1409 }
1410 #endif // wxUSE_PALETTE
1411
1412 void wxBitmap::SetHeight( int height )
1413 {
1414     if (!m_refData)
1415         m_refData = new wxBitmapRefData();
1416
1417     M_BMPDATA->m_height = height;
1418 }
1419
1420 void wxBitmap::SetWidth( int width )
1421 {
1422     if (!m_refData)
1423         m_refData = new wxBitmapRefData();
1424
1425     M_BMPDATA->m_width = width;
1426 }
1427
1428 void wxBitmap::SetDepth( int depth )
1429 {
1430     if (!m_refData)
1431         m_refData = new wxBitmapRefData();
1432
1433     M_BMPDATA->m_bpp = depth;
1434 }
1435
1436 void wxBitmap::SetPixmap( GdkPixmap *pixmap )
1437 {
1438     if (!m_refData)
1439         m_refData = new wxBitmapRefData();
1440
1441     M_BMPDATA->m_pixmap = pixmap;
1442 #ifdef __WXGTK20__
1443     PurgeOtherRepresentations(Pixmap);
1444 #endif
1445 }
1446
1447 void wxBitmap::SetBitmap( GdkPixmap *bitmap )
1448 {
1449     if (!m_refData)
1450         m_refData = new wxBitmapRefData();
1451
1452     M_BMPDATA->m_bitmap = bitmap;
1453 #ifdef __WXGTK20__
1454     PurgeOtherRepresentations(Pixmap);
1455 #endif
1456 }
1457
1458 GdkPixmap *wxBitmap::GetPixmap() const
1459 {
1460     wxCHECK_MSG( Ok(), (GdkPixmap *) NULL, wxT("invalid bitmap") );
1461
1462 #ifdef __WXGTK20__
1463     // create the pixmap on the fly if we use Pixbuf representation:
1464     if (HasPixbuf() && !HasPixmap())
1465     {
1466         delete M_BMPDATA->m_mask;
1467         M_BMPDATA->m_mask = new wxMask();
1468         gdk_pixbuf_render_pixmap_and_mask(M_BMPDATA->m_pixbuf,
1469                                           &M_BMPDATA->m_pixmap,
1470                                           &M_BMPDATA->m_mask->m_bitmap,
1471                                           128 /*threshold*/);
1472     }
1473 #endif // __WXGTK20__
1474
1475     return M_BMPDATA->m_pixmap;
1476 }
1477
1478 bool wxBitmap::HasPixmap() const
1479 {
1480     wxCHECK_MSG( Ok(), false, wxT("invalid bitmap") );
1481
1482     return M_BMPDATA->m_pixmap != NULL;
1483 }
1484
1485 GdkBitmap *wxBitmap::GetBitmap() const
1486 {
1487     wxCHECK_MSG( Ok(), (GdkBitmap *) NULL, wxT("invalid bitmap") );
1488
1489     return M_BMPDATA->m_bitmap;
1490 }
1491
1492 #ifdef __WXGTK20__
1493 GdkPixbuf *wxBitmap::GetPixbuf() const
1494 {
1495     wxCHECK_MSG( Ok(), NULL, wxT("invalid bitmap") );
1496
1497     if (HasPixmap() && !HasPixbuf())
1498     {
1499         int width = GetWidth();
1500         int height = GetHeight();
1501
1502         GdkPixbuf *pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB,
1503                                            GetMask() != NULL,
1504                                            8, width, height);
1505         M_BMPDATA->m_pixbuf =
1506             gdk_pixbuf_get_from_drawable(pixbuf, M_BMPDATA->m_pixmap, NULL,
1507                                          0, 0, 0, 0, width, height);
1508
1509         // apply the mask to created pixbuf:
1510         if (M_BMPDATA->m_pixbuf && M_BMPDATA->m_mask)
1511         {
1512             GdkPixbuf *pmask =
1513                 gdk_pixbuf_get_from_drawable(NULL,
1514                                              M_BMPDATA->m_mask->GetBitmap(),
1515                                              NULL,
1516                                              0, 0, 0, 0, width, height);
1517             if (pmask)
1518             {
1519                 guchar *bmp = gdk_pixbuf_get_pixels(pixbuf);
1520                 guchar *mask = gdk_pixbuf_get_pixels(pmask);
1521                 int bmprowinc = gdk_pixbuf_get_rowstride(pixbuf) - 4 * width;
1522                 int maskrowinc = gdk_pixbuf_get_rowstride(pmask) - 3 * width;
1523
1524                 for (int y = 0; y < height;
1525                      y++, bmp += bmprowinc, mask += maskrowinc)
1526                 {
1527                     for (int x = 0; x < width; x++, bmp += 4, mask += 3)
1528                     {
1529                         if (mask[0] == 0 /*black pixel*/)
1530                             bmp[3] = 0;
1531                     }
1532                 }
1533
1534                 gdk_pixbuf_unref(pmask);
1535             }
1536         }
1537     }
1538
1539     return M_BMPDATA->m_pixbuf;
1540 }
1541
1542 bool wxBitmap::HasPixbuf() const
1543 {
1544     wxCHECK_MSG( Ok(), false, wxT("invalid bitmap") );
1545
1546     return M_BMPDATA->m_pixbuf != NULL;
1547 }
1548
1549 void wxBitmap::SetPixbuf( GdkPixbuf *pixbuf )
1550 {
1551     if (!m_refData)
1552         m_refData = new wxBitmapRefData();
1553
1554     M_BMPDATA->m_pixbuf = pixbuf;
1555     PurgeOtherRepresentations(Pixbuf);
1556 }
1557
1558 void wxBitmap::PurgeOtherRepresentations(wxBitmap::Representation keep)
1559 {
1560     if (keep == Pixmap && HasPixbuf())
1561     {
1562         gdk_pixbuf_unref( M_BMPDATA->m_pixbuf );
1563         M_BMPDATA->m_pixbuf = NULL;
1564     }
1565     if (keep == Pixbuf && HasPixmap())
1566     {
1567         gdk_pixmap_unref( M_BMPDATA->m_pixmap );
1568         M_BMPDATA->m_pixmap = NULL;
1569     }
1570 }
1571
1572 #endif // __WXGTK20__
1573
1574 void *wxBitmap::GetRawData(wxPixelDataBase& data, int bpp)
1575 {
1576 #ifdef __WXGTK20__
1577     if (bpp != 32)
1578         return NULL;
1579
1580     GdkPixbuf *pixbuf = GetPixbuf();
1581     if (!pixbuf)
1582         return NULL;
1583
1584 #if 0
1585     if (gdk_pixbuf_get_has_alpha( pixbuf ))
1586         wxPrintf( wxT("Has alpha\n") );
1587     else
1588         wxPrintf( wxT("No alpha.\n") );
1589 #endif
1590
1591     data.m_height = gdk_pixbuf_get_height( pixbuf );
1592     data.m_width = gdk_pixbuf_get_width( pixbuf );
1593     data.m_stride = gdk_pixbuf_get_rowstride( pixbuf );
1594
1595     return gdk_pixbuf_get_pixels( pixbuf );
1596 #else
1597     return NULL;
1598 #endif
1599 }
1600
1601 void wxBitmap::UngetRawData(wxPixelDataBase& WXUNUSED(data))
1602 {
1603 }
1604
1605
1606 bool wxBitmap::HasAlpha() const
1607 {
1608 #ifdef __WXGTK20__
1609     return HasPixbuf();
1610 #else
1611     return false;
1612 #endif
1613 }
1614
1615 void wxBitmap::UseAlpha()
1616 {
1617 #ifdef __WXGTK20__
1618     GetPixbuf();
1619 #endif
1620 }
1621
1622 //-----------------------------------------------------------------------------
1623 // wxBitmapHandler
1624 //-----------------------------------------------------------------------------
1625
1626 IMPLEMENT_DYNAMIC_CLASS(wxBitmapHandler,wxBitmapHandlerBase)
1627
1628 wxBitmapHandler::~wxBitmapHandler()
1629 {
1630 }
1631
1632 bool wxBitmapHandler::Create(wxBitmap * WXUNUSED(bitmap),
1633                              void * WXUNUSED(data),
1634                              long WXUNUSED(type),
1635                              int WXUNUSED(width),
1636                              int WXUNUSED(height),
1637                              int WXUNUSED(depth))
1638 {
1639     wxFAIL_MSG( _T("not implemented") );
1640
1641     return false;
1642 }
1643
1644 bool wxBitmapHandler::LoadFile(wxBitmap * WXUNUSED(bitmap),
1645                                const wxString& WXUNUSED(name),
1646                                long WXUNUSED(flags),
1647                                int WXUNUSED(desiredWidth),
1648                                int WXUNUSED(desiredHeight))
1649 {
1650     wxFAIL_MSG( _T("not implemented") );
1651
1652     return false;
1653 }
1654
1655 bool wxBitmapHandler::SaveFile(const wxBitmap * WXUNUSED(bitmap),
1656                                const wxString& WXUNUSED(name),
1657                                int WXUNUSED(type),
1658                                const wxPalette * WXUNUSED(palette))
1659 {
1660     wxFAIL_MSG( _T("not implemented") );
1661
1662     return false;
1663 }
1664
1665 /* static */ void wxBitmap::InitStandardHandlers()
1666 {
1667     // TODO: Insert handler based on GdkPixbufs handler later
1668 }