]> git.saurik.com Git - wxWidgets.git/blobdiff - src/gtk/bitmap.cpp
[ 1216436 ] cleanup 'shadow variable' warnings from gcc in headers.
[wxWidgets.git] / src / gtk / bitmap.cpp
index 38a044b1aa640f50f1cf9e1a439a211a08231de5..28c472572b8da94257959d8cc2a3ac05880f9bf9 100644 (file)
 
 #include "wx/defs.h"
 
-#include "wx/palette.h"
 #include "wx/bitmap.h"
+#include "wx/palette.h"
 #include "wx/icon.h"
 #include "wx/filefn.h"
 #include "wx/image.h"
 #include "wx/dcmemory.h"
 #include "wx/app.h"
+#include "wx/rawbmp.h"
 
 #ifdef __WXGTK20__
     // need this to get gdk_image_new_bitmap()
@@ -39,7 +40,7 @@
     #include <gdk/gdkrgb.h>
 #endif // GTK+ 2.0/1.2
 
-#include <math.h>
+#include "wx/math.h"
 
 extern void gdk_wx_draw_bitmap     (GdkDrawable  *drawable,
                           GdkGC               *gc,
@@ -102,7 +103,7 @@ bool wxMask::Create( const wxBitmap& bitmap,
     }
 
     wxImage image = bitmap.ConvertToImage();
-    if (!image.Ok()) return FALSE;
+    if (!image.Ok()) return false;
 
     m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, image.GetWidth(), image.GetHeight(), 1 );
     GdkGC *gc = gdk_gc_new( m_bitmap );
@@ -182,7 +183,7 @@ bool wxMask::Create( const wxBitmap& bitmap,
 
     gdk_gc_unref( gc );
 
-    return TRUE;
+    return true;
 }
 
 bool wxMask::Create( const wxBitmap& bitmap, int paletteIndex )
@@ -190,7 +191,7 @@ bool wxMask::Create( const wxBitmap& bitmap, int paletteIndex )
     unsigned char r,g,b;
     wxPalette *pal = bitmap.GetPalette();
 
-    wxCHECK_MSG( pal, FALSE, wxT("Cannot create mask from bitmap without palette") );
+    wxCHECK_MSG( pal, false, wxT("Cannot create mask from bitmap without palette") );
 
     pal->GetRGB(paletteIndex, &r, &g, &b);
 
@@ -205,13 +206,13 @@ bool wxMask::Create( const wxBitmap& bitmap )
         m_bitmap = (GdkBitmap*) NULL;
     }
 
-    if (!bitmap.Ok()) return FALSE;
+    if (!bitmap.Ok()) return false;
 
-    wxCHECK_MSG( bitmap.GetBitmap(), FALSE, wxT("Cannot create mask from colour bitmap") );
+    wxCHECK_MSG( bitmap.GetBitmap(), false, wxT("Cannot create mask from colour bitmap") );
 
     m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, bitmap.GetWidth(), bitmap.GetHeight(), 1 );
 
-    if (!m_bitmap) return FALSE;
+    if (!m_bitmap) return false;
 
     GdkGC *gc = gdk_gc_new( m_bitmap );
 
@@ -219,7 +220,7 @@ bool wxMask::Create( const wxBitmap& bitmap )
 
     gdk_gc_unref( gc );
 
-    return TRUE;
+    return true;
 }
 
 GdkBitmap *wxMask::GetBitmap() const
@@ -239,6 +240,9 @@ public:
 
     GdkPixmap      *m_pixmap;
     GdkBitmap      *m_bitmap;
+#ifdef __WXGTK20__
+    GdkPixbuf      *m_pixbuf;
+#endif
     wxMask         *m_mask;
     int             m_width;
     int             m_height;
@@ -250,6 +254,9 @@ wxBitmapRefData::wxBitmapRefData()
 {
     m_pixmap = (GdkPixmap *) NULL;
     m_bitmap = (GdkBitmap *) NULL;
+#ifdef __WXGTK20__
+    m_pixbuf = (GdkPixbuf *) NULL;
+#endif
     m_mask = (wxMask *) NULL;
     m_width = 0;
     m_height = 0;
@@ -263,6 +270,10 @@ wxBitmapRefData::~wxBitmapRefData()
         gdk_pixmap_unref( m_pixmap );
     if (m_bitmap)
         gdk_bitmap_unref( m_bitmap );
+#ifdef __WXGTK20__
+    if (m_pixbuf)
+        gdk_pixbuf_unref( m_pixbuf );
+#endif
     delete m_mask;
     delete m_palette;
 }
@@ -296,7 +307,7 @@ bool wxBitmap::Create( int width, int height, int depth )
     if (depth == -1)
         depth = visual->depth;
 
-    wxCHECK_MSG( (depth == visual->depth) || (depth == 1), FALSE,
+    wxCHECK_MSG( (depth == visual->depth) || (depth == 1) || (depth == 32), false,
                     wxT("invalid bitmap depth") )
 
     m_refData = new wxBitmapRefData();
@@ -308,6 +319,14 @@ bool wxBitmap::Create( int width, int height, int depth )
         M_BMPDATA->m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, width, height, 1 );
         M_BMPDATA->m_bpp = 1;
     }
+#ifdef __WXGTK20__
+    else if (depth == 32)
+    {
+        M_BMPDATA->m_pixbuf = gdk_pixbuf_new( GDK_COLORSPACE_RGB, true,
+                                              8, width, height);
+        M_BMPDATA->m_bpp = 32;
+    }
+#endif
     else
     {
         M_BMPDATA->m_pixmap = gdk_pixmap_new( wxGetRootWindow()->window, width, height, depth );
@@ -321,7 +340,7 @@ bool wxBitmap::CreateFromXpm( const char **bits )
 {
     UnRef();
 
-    wxCHECK_MSG( bits != NULL, FALSE, wxT("invalid bitmap data") )
+    wxCHECK_MSG( bits != NULL, false, wxT("invalid bitmap data") )
 
     GdkVisual *visual = wxTheApp->GetGdkVisual();
 
@@ -331,7 +350,7 @@ bool wxBitmap::CreateFromXpm( const char **bits )
 
     M_BMPDATA->m_pixmap = gdk_pixmap_create_from_xpm_d( wxGetRootWindow()->window, &mask, NULL, (gchar **) bits );
 
-    wxCHECK_MSG( M_BMPDATA->m_pixmap, FALSE, wxT("couldn't create pixmap") );
+    wxCHECK_MSG( M_BMPDATA->m_pixmap, false, wxT("couldn't create pixmap") );
 
     if (mask)
     {
@@ -343,7 +362,7 @@ bool wxBitmap::CreateFromXpm( const char **bits )
 
     M_BMPDATA->m_bpp = visual->depth;  // Can we get a different depth from create_from_xpm_d() ?
 
-    return TRUE;
+    return true;
 }
 
 wxBitmap wxBitmap::Rescale( int clipx, int clipy, int clipwidth, int clipheight, int newx, int newy )
@@ -352,136 +371,91 @@ wxBitmap wxBitmap::Rescale( int clipx, int clipy, int clipwidth, int clipheight,
 
     if (newy==M_BMPDATA->m_width && newy==M_BMPDATA->m_height)
         return *this;
-        
-    GdkImage *img = (GdkImage*) NULL;
-    if (GetPixmap())
-        img = gdk_image_get( GetPixmap(), 0, 0, GetWidth(), GetHeight() );
-    else if (GetBitmap())
-        img = gdk_image_get( GetBitmap(), 0, 0, GetWidth(), GetHeight() );
-    else
-        wxFAIL_MSG( wxT("Ill-formed bitmap") );
-
-    wxCHECK_MSG( img, wxNullBitmap, wxT("couldn't create image") );
-
-    wxBitmap bmp;
-    int bpp = -1;
 
     int width = wxMax(newx, 1);
     int height = wxMax(newy, 1);
     width = wxMin(width, clipwidth);
     height = wxMin(height, clipheight);
-    
-    GdkGC *gc = NULL;
-    GdkPixmap *dstpix = NULL;
-    if (GetPixmap())
-    {
-        GdkVisual *visual = gdk_window_get_visual( GetPixmap() );
-        if (visual == NULL)
-            visual = wxTheApp->GetGdkVisual();
-
-        bpp = visual->depth;
-        bmp = wxBitmap(width,height,bpp);
-        dstpix = bmp.GetPixmap();
-        gc = gdk_gc_new( dstpix );
-    }
 
-    char *dst = NULL;
-    long dstbyteperline = 0;
-    
-    if (GetBitmap())
+    wxBitmap bmp;
+
+#ifdef __WXGTK20__
+    if (HasPixbuf())
     {
-        bpp = 1;
-        dstbyteperline = width/8*M_BMPDATA->m_bpp;
-        if (width*M_BMPDATA->m_bpp % 8 != 0)
-            dstbyteperline++;
-        dst = (char*) malloc(dstbyteperline*height);
+        bmp.SetWidth(width);
+        bmp.SetHeight(height);
+        bmp.SetDepth(GetDepth());
+        bmp.SetPixbuf(gdk_pixbuf_new(GDK_COLORSPACE_RGB,
+                                     gdk_pixbuf_get_has_alpha(GetPixbuf()),
+                                     8, width, height));
+        gdk_pixbuf_scale(GetPixbuf(), bmp.GetPixbuf(),
+                         0, 0, width, height,
+                         clipx, clipy,
+                         (double)newx/GetWidth(), (double)newy/GetHeight(),
+                         GDK_INTERP_BILINEAR);
     }
-             
-    // be careful to use the right scaling factor
-    float scx = (float)M_BMPDATA->m_width/(float)newx;
-    float scy = (float)M_BMPDATA->m_height/(float)newy;
-    // prepare accel-tables
-    int *tablex = (int *)calloc(width,sizeof(int));
-    int *tabley = (int *)calloc(height,sizeof(int));
-
-    // accel table filled with clipped values
-    for (int x = 0; x < width; x++)
-        tablex[x] = (int) (scx * (x+clipx));
-    for (int y = 0; y < height; y++)
-        tabley[y] = (int) (scy * (y+clipy));
-
-    // Main rescaling routine starts here
-    for (int h = 0; h < height; h++)
+    else
+#endif // __WXGTK20__
     {
-        char outbyte = 0;
-        int old_x = -1;
-        guint32 old_pixval;
+        GdkImage *img = (GdkImage*) NULL;
+        if (GetPixmap())
+            img = gdk_image_get( GetPixmap(), 0, 0, GetWidth(), GetHeight() );
+        else if (GetBitmap())
+            img = gdk_image_get( GetBitmap(), 0, 0, GetWidth(), GetHeight() );
+        else
+            wxFAIL_MSG( wxT("Ill-formed bitmap") );
+
+        wxCHECK_MSG( img, wxNullBitmap, wxT("couldn't create image") );
 
-        for (int w = 0; w < width; w++)
+        int bpp = -1;
+
+
+        GdkGC *gc = NULL;
+        GdkPixmap *dstpix = NULL;
+        if (GetPixmap())
         {
-            guint32 pixval;
-            int x = tablex[w];
-            if (x == old_x)
-                pixval = old_pixval;
-            else
-            {
-                pixval = gdk_image_get_pixel( img, x, tabley[h] );
-                old_pixval = pixval;
-                old_x = x;
-            }
-                
-            if (bpp == 1)
-            {
-                if (!pixval)
-                {
-                    char bit=1;
-                    char shift = bit << w % 8;
-                    outbyte |= shift;
-                }
-                
-                if ((w+1)%8==0)
-                {
-                    dst[h*dstbyteperline+w/8] = outbyte;
-                    outbyte = 0;
-                }
-            }
-            else
-            {
-                GdkColor col;
-                col.pixel = pixval;
-                gdk_gc_set_foreground( gc, &col );
-                gdk_draw_point( dstpix, gc, w, h);
-            }
+            GdkVisual *visual = gdk_window_get_visual( GetPixmap() );
+            if (visual == NULL)
+                visual = wxTheApp->GetGdkVisual();
+
+            bpp = visual->depth;
+            bmp = wxBitmap(width,height,bpp);
+            dstpix = bmp.GetPixmap();
+            gc = gdk_gc_new( dstpix );
         }
-    
-        // do not forget the last byte
-        if ((bpp == 1) && (width % 8 != 0))
-            dst[h*dstbyteperline+width/8] = outbyte;
-    }
-    
-    gdk_image_destroy( img );
-    if (gc) gdk_gc_unref( gc );
 
-    if (bpp == 1)
-    {
-        bmp = wxBitmap( (const char *)dst, width, height, 1 );
-        free( dst );
-    }
-    
-    if (GetMask())
-    {
-        dstbyteperline = width/8;
-        if (width % 8 != 0)
-            dstbyteperline++;
-        dst = (char*) malloc(dstbyteperline*height);
-        img = gdk_image_get( GetMask()->GetBitmap(), 0, 0, GetWidth(), GetHeight() );
+        char *dst = NULL;
+        long dstbyteperline = 0;
+
+        if (GetBitmap())
+        {
+            bpp = 1;
+            dstbyteperline = width/8*M_BMPDATA->m_bpp;
+            if (width*M_BMPDATA->m_bpp % 8 != 0)
+                dstbyteperline++;
+            dst = (char*) malloc(dstbyteperline*height);
+        }
+
+        // be careful to use the right scaling factor
+        float scx = (float)M_BMPDATA->m_width/(float)newx;
+        float scy = (float)M_BMPDATA->m_height/(float)newy;
+        // prepare accel-tables
+        int *tablex = (int *)calloc(width,sizeof(int));
+        int *tabley = (int *)calloc(height,sizeof(int));
+
+        // accel table filled with clipped values
+        for (int x = 0; x < width; x++)
+            tablex[x] = (int) (scx * (x+clipx));
+        for (int y = 0; y < height; y++)
+            tabley[y] = (int) (scy * (y+clipy));
 
+        // Main rescaling routine starts here
         for (int h = 0; h < height; h++)
         {
             char outbyte = 0;
             int old_x = -1;
-            guint32 old_pixval;
-    
+            guint32 old_pixval = 0;
+
             for (int w = 0; w < width; w++)
             {
                 guint32 pixval;
@@ -494,541 +468,707 @@ wxBitmap wxBitmap::Rescale( int clipx, int clipy, int clipwidth, int clipheight,
                     old_pixval = pixval;
                     old_x = x;
                 }
-                
-                if (pixval)
+
+                if (bpp == 1)
                 {
-                    char bit=1;
-                    char shift = bit << w % 8;
-                    outbyte |= shift;
+                    if (!pixval)
+                    {
+                        char bit=1;
+                        char shift = bit << w % 8;
+                        outbyte |= shift;
+                    }
+
+                    if ((w+1)%8==0)
+                    {
+                        dst[h*dstbyteperline+w/8] = outbyte;
+                        outbyte = 0;
+                    }
                 }
-                
-                if ((w+1)%8 == 0)
+                else
                 {
-                    dst[h*dstbyteperline+w/8] = outbyte;
-                    outbyte = 0;
+                    GdkColor col;
+                    col.pixel = pixval;
+                    gdk_gc_set_foreground( gc, &col );
+                    gdk_draw_point( dstpix, gc, w, h);
                 }
             }
-        
+
             // do not forget the last byte
-            if (width % 8 != 0)
+            if ((bpp == 1) && (width % 8 != 0))
                 dst[h*dstbyteperline+width/8] = outbyte;
         }
-        wxMask* mask = new wxMask;
-        mask->m_bitmap = gdk_bitmap_create_from_data( wxGetRootWindow()->window, (gchar *) dst, width, height );
-        bmp.SetMask(mask);
 
-        free( dst );
         gdk_image_destroy( img );
+        if (gc) gdk_gc_unref( gc );
+
+        if (bpp == 1)
+        {
+            bmp = wxBitmap( (const char *)dst, width, height, 1 );
+            free( dst );
+        }
+
+        if (GetMask())
+        {
+            dstbyteperline = width/8;
+            if (width % 8 != 0)
+                dstbyteperline++;
+            dst = (char*) malloc(dstbyteperline*height);
+            img = gdk_image_get( GetMask()->GetBitmap(), 0, 0, GetWidth(), GetHeight() );
+
+            for (int h = 0; h < height; h++)
+            {
+                char outbyte = 0;
+                int old_x = -1;
+                guint32 old_pixval = 0;
+
+                for (int w = 0; w < width; w++)
+                {
+                    guint32 pixval;
+                    int x = tablex[w];
+                    if (x == old_x)
+                        pixval = old_pixval;
+                    else
+                    {
+                        pixval = gdk_image_get_pixel( img, x, tabley[h] );
+                        old_pixval = pixval;
+                        old_x = x;
+                    }
+
+                    if (pixval)
+                    {
+                        char bit=1;
+                        char shift = bit << w % 8;
+                        outbyte |= shift;
+                    }
+
+                    if ((w+1)%8 == 0)
+                    {
+                        dst[h*dstbyteperline+w/8] = outbyte;
+                        outbyte = 0;
+                    }
+                }
+
+                // do not forget the last byte
+                if (width % 8 != 0)
+                    dst[h*dstbyteperline+width/8] = outbyte;
+            }
+            wxMask* mask = new wxMask;
+            mask->m_bitmap = gdk_bitmap_create_from_data( wxGetRootWindow()->window, (gchar *) dst, width, height );
+            bmp.SetMask(mask);
+
+            free( dst );
+            gdk_image_destroy( img );
+        }
+
+        free( tablex );
+        free( tabley );
     }
 
-    free( tablex );
-    free( tabley );
-    
-    return bmp; 
+    return bmp;
 }
 
-bool wxBitmap::CreateFromImage( const wxImage& image, int depth )
+bool wxBitmap::CreateFromImage(const wxImage& image, int depth)
 {
     UnRef();
 
-    wxCHECK_MSG( image.Ok(), FALSE, wxT("invalid image") )
-    wxCHECK_MSG( depth == -1 || depth == 1, FALSE, wxT("invalid bitmap depth") )
+    wxCHECK_MSG( image.Ok(), false, wxT("invalid image") )
+    wxCHECK_MSG( depth == -1 || depth == 1, false, wxT("invalid bitmap depth") )
 
-    int width = image.GetWidth();
-    int height = image.GetHeight();
+    if (image.GetWidth() <= 0 || image.GetHeight() <= 0)
+        return false;
 
-    if ( width <= 0 || height <= 0 )
+    m_refData = new wxBitmapRefData();
+
+    if (depth == 1)
     {
-        return false;
+        return CreateFromImageAsBitmap(image);
     }
+    else
+    {
+#ifdef __WXGTK20__
+        if (image.HasAlpha())
+            return CreateFromImageAsPixbuf(image);
+#endif
+        return CreateFromImageAsPixmap(image);
+    }
+}
 
-    m_refData = new wxBitmapRefData();
+// conversion to mono bitmap:
+bool wxBitmap::CreateFromImageAsBitmap(const wxImage& img)
+{
+    // convert alpha channel to mask, if it is present:
+    wxImage image(img);
+    image.ConvertAlphaToMask();
+
+    int width = image.GetWidth();
+    int height = image.GetHeight();
 
     SetHeight( height );
     SetWidth( width );
 
-    // ------
-    // conversion to mono bitmap:
-    // ------
-    if (depth == 1)
-    {
-        SetBitmap( gdk_pixmap_new( wxGetRootWindow()->window, width, height, 1 ) );
+    SetBitmap( gdk_pixmap_new( wxGetRootWindow()->window, width, height, 1 ) );
 
-        SetDepth( 1 );
+    SetDepth( 1 );
 
-        GdkVisual *visual = wxTheApp->GetGdkVisual();
+    GdkVisual *visual = wxTheApp->GetGdkVisual();
 
-        // Create picture image
+    // Create picture image
 
-        unsigned char *data_data = (unsigned char*)malloc( ((width >> 3)+8) * height );
+    unsigned char *data_data = (unsigned char*)malloc( ((width >> 3)+8) * height );
 
-        GdkImage *data_image =
-            gdk_image_new_bitmap( visual, data_data, width, height );
+    GdkImage *data_image =
+        gdk_image_new_bitmap( visual, data_data, width, height );
 
-        // Create mask image
+    // Create mask image
 
-        GdkImage *mask_image = (GdkImage*) NULL;
+    GdkImage *mask_image = (GdkImage*) NULL;
 
-        if (image.HasMask())
-        {
-            unsigned char *mask_data = (unsigned char*)malloc( ((width >> 3)+8) * height );
+    if (image.HasMask())
+    {
+        unsigned char *mask_data = (unsigned char*)malloc( ((width >> 3)+8) * height );
 
-            mask_image =  gdk_image_new_bitmap( visual, mask_data, width, height );
+        mask_image =  gdk_image_new_bitmap( visual, mask_data, width, height );
 
-            wxMask *mask = new wxMask();
-            mask->m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, width, height, 1 );
+        wxMask *mask = new wxMask();
+        mask->m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, width, height, 1 );
 
-            SetMask( mask );
-        }
+        SetMask( mask );
+    }
 
-        int r_mask = image.GetMaskRed();
-        int g_mask = image.GetMaskGreen();
-        int b_mask = image.GetMaskBlue();
+    int r_mask = image.GetMaskRed();
+    int g_mask = image.GetMaskGreen();
+    int b_mask = image.GetMaskBlue();
 
-        unsigned char* data = image.GetData();
+    unsigned char* data = image.GetData();
 
-        int index = 0;
-        for (int y = 0; y < height; y++)
+    int index = 0;
+    for (int y = 0; y < height; y++)
+    {
+        for (int x = 0; x < width; x++)
         {
-            for (int x = 0; x < width; x++)
+            int r = data[index];
+            index++;
+            int g = data[index];
+            index++;
+            int b = data[index];
+            index++;
+
+            if (image.HasMask())
             {
-                int r = data[index];
-                index++;
-                int g = data[index];
-                index++;
-                int b = data[index];
-                index++;
-
-                if (image.HasMask())
-                {
-                    if ((r == r_mask) && (b == b_mask) && (g == g_mask))
-                        gdk_image_put_pixel( mask_image, x, y, 1 );
-                    else
-                        gdk_image_put_pixel( mask_image, x, y, 0 );
-                }
-
-                if ((r == 255) && (b == 255) && (g == 255))
-                    gdk_image_put_pixel( data_image, x, y, 1 );
+                if ((r == r_mask) && (b == b_mask) && (g == g_mask))
+                    gdk_image_put_pixel( mask_image, x, y, 1 );
                 else
-                    gdk_image_put_pixel( data_image, x, y, 0 );
+                    gdk_image_put_pixel( mask_image, x, y, 0 );
+            }
 
-            } // for
-        }  // for
+            if ((r == 255) && (b == 255) && (g == 255))
+                gdk_image_put_pixel( data_image, x, y, 1 );
+            else
+                gdk_image_put_pixel( data_image, x, y, 0 );
 
-        // Blit picture
+        } // for
+    }  // for
 
-        GdkGC *data_gc = gdk_gc_new( GetBitmap() );
+    // Blit picture
 
-        gdk_draw_image( GetBitmap(), data_gc, data_image, 0, 0, 0, 0, width, height );
+    GdkGC *data_gc = gdk_gc_new( GetBitmap() );
 
-        gdk_image_destroy( data_image );
-        gdk_gc_unref( data_gc );
+    gdk_draw_image( GetBitmap(), data_gc, data_image, 0, 0, 0, 0, width, height );
 
-        // Blit mask
+    gdk_image_destroy( data_image );
+    gdk_gc_unref( data_gc );
 
-        if (image.HasMask())
-        {
-            GdkGC *mask_gc = gdk_gc_new( GetMask()->GetBitmap() );
+    // Blit mask
 
-            gdk_draw_image( GetMask()->GetBitmap(), mask_gc, mask_image, 0, 0, 0, 0, width, height );
+    if (image.HasMask())
+    {
+        GdkGC *mask_gc = gdk_gc_new( GetMask()->GetBitmap() );
 
-            gdk_image_destroy( mask_image );
-            gdk_gc_unref( mask_gc );
-        }
+        gdk_draw_image( GetMask()->GetBitmap(), mask_gc, mask_image, 0, 0, 0, 0, width, height );
+
+        gdk_image_destroy( mask_image );
+        gdk_gc_unref( mask_gc );
     }
 
-    // ------
-    // conversion to colour bitmap:
-    // ------
-    else
-    {
-        SetPixmap( gdk_pixmap_new( wxGetRootWindow()->window, width, height, -1 ) );
+    return true;
+}
 
-        GdkVisual *visual = wxTheApp->GetGdkVisual();
+// conversion to colour bitmap:
+bool wxBitmap::CreateFromImageAsPixmap(const wxImage& img)
+{
+    // convert alpha channel to mask, if it is present:
+    wxImage image(img);
+    image.ConvertAlphaToMask();
 
-        int bpp = visual->depth;
+    int width = image.GetWidth();
+    int height = image.GetHeight();
 
-        SetDepth( bpp );
+    SetHeight( height );
+    SetWidth( width );
+
+    SetPixmap( gdk_pixmap_new( wxGetRootWindow()->window, width, height, -1 ) );
 
-        if ((bpp == 16) && (visual->red_mask != 0xf800))
-            bpp = 15;
-        else if (bpp < 8)
-            bpp = 8;
+    GdkVisual *visual = wxTheApp->GetGdkVisual();
+
+    int bpp = visual->depth;
 
-        // We handle 8-bit bitmaps ourselves using the colour cube, 12-bit
-        // visuals are not supported by GDK so we do these ourselves, too.
-        // 15-bit and 16-bit should actually work and 24-bit certainly does.
+    SetDepth( bpp );
+
+    if ((bpp == 16) && (visual->red_mask != 0xf800))
+        bpp = 15;
+    else if (bpp < 8)
+        bpp = 8;
+
+    // We handle 8-bit bitmaps ourselves using the colour cube, 12-bit
+    // visuals are not supported by GDK so we do these ourselves, too.
+    // 15-bit and 16-bit should actually work and 24-bit certainly does.
 #ifdef __sgi
-        if (!image.HasMask() && (bpp > 16))
+    if (!image.HasMask() && (bpp > 16))
 #else
-        if (!image.HasMask() && (bpp > 12))
+    if (!image.HasMask() && (bpp > 12))
 #endif
-        {
-            static bool s_hasInitialized = FALSE;
+    {
+        static bool s_hasInitialized = false;
 
-            if (!s_hasInitialized)
-            {
-                gdk_rgb_init();
-                s_hasInitialized = TRUE;
-            }
+        if (!s_hasInitialized)
+        {
+            gdk_rgb_init();
+            s_hasInitialized = true;
+        }
 
-            GdkGC *gc = gdk_gc_new( GetPixmap() );
+        GdkGC *gc = gdk_gc_new( GetPixmap() );
 
-            gdk_draw_rgb_image( GetPixmap(),
-                                gc,
-                                0, 0,
-                                width, height,
-                                GDK_RGB_DITHER_NONE,
-                                image.GetData(),
-                                width*3 );
+        gdk_draw_rgb_image( GetPixmap(),
+                            gc,
+                            0, 0,
+                            width, height,
+                            GDK_RGB_DITHER_NONE,
+                            image.GetData(),
+                            width*3 );
 
-            gdk_gc_unref( gc );
-            return TRUE;
-        }
+        gdk_gc_unref( gc );
+        return true;
+    }
 
-        // Create picture image
+    // Create picture image
 
-        GdkImage *data_image =
-            gdk_image_new( GDK_IMAGE_FASTEST, visual, width, height );
+    GdkImage *data_image =
+        gdk_image_new( GDK_IMAGE_FASTEST, visual, width, height );
 
-        // Create mask image
+    // Create mask image
 
-        GdkImage *mask_image = (GdkImage*) NULL;
+    GdkImage *mask_image = (GdkImage*) NULL;
 
-        if (image.HasMask())
-        {
-            unsigned char *mask_data = (unsigned char*)malloc( ((width >> 3)+8) * height );
+    if (image.HasMask())
+    {
+        unsigned char *mask_data = (unsigned char*)malloc( ((width >> 3)+8) * height );
 
-            mask_image =  gdk_image_new_bitmap( visual, mask_data, width, height );
+        mask_image =  gdk_image_new_bitmap( visual, mask_data, width, height );
 
-            wxMask *mask = new wxMask();
-            mask->m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, width, height, 1 );
+        wxMask *mask = new wxMask();
+        mask->m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, width, height, 1 );
 
-            SetMask( mask );
-        }
+        SetMask( mask );
+    }
 
-        // Render
+    // Render
 
-        enum byte_order { RGB, RBG, BRG, BGR, GRB, GBR };
-        byte_order b_o = RGB;
+    enum byte_order { RGB, RBG, BRG, BGR, GRB, GBR };
+    byte_order b_o = RGB;
 
-        if (bpp > 8)
-        {
-            if ((visual->red_mask > visual->green_mask) && (visual->green_mask > visual->blue_mask))      b_o = RGB;
-            else if ((visual->red_mask > visual->blue_mask) && (visual->blue_mask > visual->green_mask))  b_o = RBG;
-            else if ((visual->blue_mask > visual->red_mask) && (visual->red_mask > visual->green_mask))   b_o = BRG;
-            else if ((visual->blue_mask > visual->green_mask) && (visual->green_mask > visual->red_mask)) b_o = BGR;
-            else if ((visual->green_mask > visual->red_mask) && (visual->red_mask > visual->blue_mask))   b_o = GRB;
-            else if ((visual->green_mask > visual->blue_mask) && (visual->blue_mask > visual->red_mask))  b_o = GBR;
-        }
+    if (bpp > 8)
+    {
+        if ((visual->red_mask > visual->green_mask) && (visual->green_mask > visual->blue_mask))      b_o = RGB;
+        else if ((visual->red_mask > visual->blue_mask) && (visual->blue_mask > visual->green_mask))  b_o = RBG;
+        else if ((visual->blue_mask > visual->red_mask) && (visual->red_mask > visual->green_mask))   b_o = BRG;
+        else if ((visual->blue_mask > visual->green_mask) && (visual->green_mask > visual->red_mask)) b_o = BGR;
+        else if ((visual->green_mask > visual->red_mask) && (visual->red_mask > visual->blue_mask))   b_o = GRB;
+        else if ((visual->green_mask > visual->blue_mask) && (visual->blue_mask > visual->red_mask))  b_o = GBR;
+    }
 
-        int r_mask = image.GetMaskRed();
-        int g_mask = image.GetMaskGreen();
-        int b_mask = image.GetMaskBlue();
+    int r_mask = image.GetMaskRed();
+    int g_mask = image.GetMaskGreen();
+    int b_mask = image.GetMaskBlue();
 
-        unsigned char* data = image.GetData();
+    unsigned char* data = image.GetData();
 
-        int index = 0;
-        for (int y = 0; y < height; y++)
+    int index = 0;
+    for (int y = 0; y < height; y++)
+    {
+        for (int x = 0; x < width; x++)
         {
-            for (int x = 0; x < width; x++)
+            int r = data[index];
+            index++;
+            int g = data[index];
+            index++;
+            int b = data[index];
+            index++;
+
+            if (image.HasMask())
             {
-                int r = data[index];
-                index++;
-                int g = data[index];
-                index++;
-                int b = data[index];
-                index++;
-
-                if (image.HasMask())
-                {
-                    if ((r == r_mask) && (b == b_mask) && (g == g_mask))
-                        gdk_image_put_pixel( mask_image, x, y, 1 );
-                    else
-                        gdk_image_put_pixel( mask_image, x, y, 0 );
-                }
+                if ((r == r_mask) && (b == b_mask) && (g == g_mask))
+                    gdk_image_put_pixel( mask_image, x, y, 1 );
+                else
+                    gdk_image_put_pixel( mask_image, x, y, 0 );
+            }
 
-                switch (bpp)
+            switch (bpp)
+            {
+                case 8:
                 {
-                    case 8:
+                    int pixel = -1;
+                    if (wxTheApp->m_colorCube)
                     {
-                        int pixel = -1;
-                        if (wxTheApp->m_colorCube)
-                        {
-                            pixel = wxTheApp->m_colorCube[ ((r & 0xf8) << 7) + ((g & 0xf8) << 2) + ((b & 0xf8) >> 3) ];
-                        }
-                        else
+                        pixel = wxTheApp->m_colorCube[ ((r & 0xf8) << 7) + ((g & 0xf8) << 2) + ((b & 0xf8) >> 3) ];
+                    }
+                    else
+                    {
+                        GdkColormap *cmap = gtk_widget_get_default_colormap();
+                        GdkColor *colors = cmap->colors;
+                        int max = 3 * (65536);
+
+                        for (int i = 0; i < cmap->size; i++)
                         {
-                            GdkColormap *cmap = gtk_widget_get_default_colormap();
-                            GdkColor *colors = cmap->colors;
-                            int max = 3 * (65536);
-
-                            for (int i = 0; i < cmap->size; i++)
-                            {
-                                int rdiff = (r << 8) - colors[i].red;
-                                int gdiff = (g << 8) - colors[i].green;
-                                int bdiff = (b << 8) - colors[i].blue;
-                                int sum = ABS (rdiff) + ABS (gdiff) + ABS (bdiff);
-                                if (sum < max) { pixel = i; max = sum; }
-                            }
+                            int rdiff = (r << 8) - colors[i].red;
+                            int gdiff = (g << 8) - colors[i].green;
+                            int bdiff = (b << 8) - colors[i].blue;
+                            int sum = ABS (rdiff) + ABS (gdiff) + ABS (bdiff);
+                            if (sum < max) { pixel = i; max = sum; }
                         }
+                    }
 
-                        gdk_image_put_pixel( data_image, x, y, pixel );
+                    gdk_image_put_pixel( data_image, x, y, pixel );
 
-                        break;
-                    }
-                    case 12:  // SGI only
+                    break;
+                }
+                case 12:  // SGI only
+                {
+                    guint32 pixel = 0;
+                    switch (b_o)
                     {
-                        guint32 pixel = 0;
-                        switch (b_o)
-                        {
-                            case RGB: pixel = ((r & 0xf0) << 4) | (g & 0xf0) | ((b & 0xf0) >> 4); break;
-                            case RBG: pixel = ((r & 0xf0) << 4) | (b & 0xf0) | ((g & 0xf0) >> 4); break;
-                            case GRB: pixel = ((g & 0xf0) << 4) | (r & 0xf0) | ((b & 0xf0) >> 4); break;
-                            case GBR: pixel = ((g & 0xf0) << 4) | (b & 0xf0) | ((r & 0xf0) >> 4); break;
-                            case BRG: pixel = ((b & 0xf0) << 4) | (r & 0xf0) | ((g & 0xf0) >> 4); break;
-                            case BGR: pixel = ((b & 0xf0) << 4) | (g & 0xf0) | ((r & 0xf0) >> 4); break;
-                        }
-                        gdk_image_put_pixel( data_image, x, y, pixel );
-                        break;
+                        case RGB: pixel = ((r & 0xf0) << 4) | (g & 0xf0) | ((b & 0xf0) >> 4); break;
+                        case RBG: pixel = ((r & 0xf0) << 4) | (b & 0xf0) | ((g & 0xf0) >> 4); break;
+                        case GRB: pixel = ((g & 0xf0) << 4) | (r & 0xf0) | ((b & 0xf0) >> 4); break;
+                        case GBR: pixel = ((g & 0xf0) << 4) | (b & 0xf0) | ((r & 0xf0) >> 4); break;
+                        case BRG: pixel = ((b & 0xf0) << 4) | (r & 0xf0) | ((g & 0xf0) >> 4); break;
+                        case BGR: pixel = ((b & 0xf0) << 4) | (g & 0xf0) | ((r & 0xf0) >> 4); break;
                     }
-                    case 15:
+                    gdk_image_put_pixel( data_image, x, y, pixel );
+                    break;
+                }
+                case 15:
+                {
+                    guint32 pixel = 0;
+                    switch (b_o)
                     {
-                        guint32 pixel = 0;
-                        switch (b_o)
-                        {
-                            case RGB: pixel = ((r & 0xf8) << 7) | ((g & 0xf8) << 2) | ((b & 0xf8) >> 3); break;
-                            case RBG: pixel = ((r & 0xf8) << 7) | ((b & 0xf8) << 2) | ((g & 0xf8) >> 3); break;
-                            case GRB: pixel = ((g & 0xf8) << 7) | ((r & 0xf8) << 2) | ((b & 0xf8) >> 3); break;
-                            case GBR: pixel = ((g & 0xf8) << 7) | ((b & 0xf8) << 2) | ((r & 0xf8) >> 3); break;
-                            case BRG: pixel = ((b & 0xf8) << 7) | ((r & 0xf8) << 2) | ((g & 0xf8) >> 3); break;
-                            case BGR: pixel = ((b & 0xf8) << 7) | ((g & 0xf8) << 2) | ((r & 0xf8) >> 3); break;
-                        }
-                        gdk_image_put_pixel( data_image, x, y, pixel );
-                        break;
+                        case RGB: pixel = ((r & 0xf8) << 7) | ((g & 0xf8) << 2) | ((b & 0xf8) >> 3); break;
+                        case RBG: pixel = ((r & 0xf8) << 7) | ((b & 0xf8) << 2) | ((g & 0xf8) >> 3); break;
+                        case GRB: pixel = ((g & 0xf8) << 7) | ((r & 0xf8) << 2) | ((b & 0xf8) >> 3); break;
+                        case GBR: pixel = ((g & 0xf8) << 7) | ((b & 0xf8) << 2) | ((r & 0xf8) >> 3); break;
+                        case BRG: pixel = ((b & 0xf8) << 7) | ((r & 0xf8) << 2) | ((g & 0xf8) >> 3); break;
+                        case BGR: pixel = ((b & 0xf8) << 7) | ((g & 0xf8) << 2) | ((r & 0xf8) >> 3); break;
                     }
-                    case 16:
+                    gdk_image_put_pixel( data_image, x, y, pixel );
+                    break;
+                }
+                case 16:
+                {
+                    // I actually don't know if for 16-bit displays, it is alway the green
+                    // component or the second component which has 6 bits.
+                    guint32 pixel = 0;
+                    switch (b_o)
                     {
-                        // I actually don't know if for 16-bit displays, it is alway the green
-                        // component or the second component which has 6 bits.
-                        guint32 pixel = 0;
-                        switch (b_o)
-                        {
-                            case RGB: pixel = ((r & 0xf8) << 8) | ((g & 0xfc) << 3) | ((b & 0xf8) >> 3); break;
-                            case RBG: pixel = ((r & 0xf8) << 8) | ((b & 0xfc) << 3) | ((g & 0xf8) >> 3); break;
-                            case GRB: pixel = ((g & 0xf8) << 8) | ((r & 0xfc) << 3) | ((b & 0xf8) >> 3); break;
-                            case GBR: pixel = ((g & 0xf8) << 8) | ((b & 0xfc) << 3) | ((r & 0xf8) >> 3); break;
-                            case BRG: pixel = ((b & 0xf8) << 8) | ((r & 0xfc) << 3) | ((g & 0xf8) >> 3); break;
-                            case BGR: pixel = ((b & 0xf8) << 8) | ((g & 0xfc) << 3) | ((r & 0xf8) >> 3); break;
-                        }
-                        gdk_image_put_pixel( data_image, x, y, pixel );
-                        break;
+                        case RGB: pixel = ((r & 0xf8) << 8) | ((g & 0xfc) << 3) | ((b & 0xf8) >> 3); break;
+                        case RBG: pixel = ((r & 0xf8) << 8) | ((b & 0xfc) << 3) | ((g & 0xf8) >> 3); break;
+                        case GRB: pixel = ((g & 0xf8) << 8) | ((r & 0xfc) << 3) | ((b & 0xf8) >> 3); break;
+                        case GBR: pixel = ((g & 0xf8) << 8) | ((b & 0xfc) << 3) | ((r & 0xf8) >> 3); break;
+                        case BRG: pixel = ((b & 0xf8) << 8) | ((r & 0xfc) << 3) | ((g & 0xf8) >> 3); break;
+                        case BGR: pixel = ((b & 0xf8) << 8) | ((g & 0xfc) << 3) | ((r & 0xf8) >> 3); break;
                     }
-                    case 32:
-                    case 24:
+                    gdk_image_put_pixel( data_image, x, y, pixel );
+                    break;
+                }
+                case 32:
+                case 24:
+                {
+                    guint32 pixel = 0;
+                    switch (b_o)
                     {
-                        guint32 pixel = 0;
-                        switch (b_o)
-                        {
-                            case RGB: pixel = (r << 16) | (g << 8) | b; break;
-                            case RBG: pixel = (r << 16) | (b << 8) | g; break;
-                            case BRG: pixel = (b << 16) | (r << 8) | g; break;
-                            case BGR: pixel = (b << 16) | (g << 8) | r; break;
-                            case GRB: pixel = (g << 16) | (r << 8) | b; break;
-                            case GBR: pixel = (g << 16) | (b << 8) | r; break;
-                        }
-                        gdk_image_put_pixel( data_image, x, y, pixel );
+                        case RGB: pixel = (r << 16) | (g << 8) | b; break;
+                        case RBG: pixel = (r << 16) | (b << 8) | g; break;
+                        case BRG: pixel = (b << 16) | (r << 8) | g; break;
+                        case BGR: pixel = (b << 16) | (g << 8) | r; break;
+                        case GRB: pixel = (g << 16) | (r << 8) | b; break;
+                        case GBR: pixel = (g << 16) | (b << 8) | r; break;
                     }
-                    default: break;
+                    gdk_image_put_pixel( data_image, x, y, pixel );
+                    break;
                 }
-            } // for
-        }  // for
+                default: break;
+            }
+        } // for
+    }  // for
 
-        // Blit picture
+    // Blit picture
 
-        GdkGC *data_gc = gdk_gc_new( GetPixmap() );
+    GdkGC *data_gc = gdk_gc_new( GetPixmap() );
 
-        gdk_draw_image( GetPixmap(), data_gc, data_image, 0, 0, 0, 0, width, height );
+    gdk_draw_image( GetPixmap(), data_gc, data_image, 0, 0, 0, 0, width, height );
 
-        gdk_image_destroy( data_image );
-        gdk_gc_unref( data_gc );
+    gdk_image_destroy( data_image );
+    gdk_gc_unref( data_gc );
 
-        // Blit mask
+    // Blit mask
 
-        if (image.HasMask())
-        {
-            GdkGC *mask_gc = gdk_gc_new( GetMask()->GetBitmap() );
+    if (image.HasMask())
+    {
+        GdkGC *mask_gc = gdk_gc_new( GetMask()->GetBitmap() );
 
-            gdk_draw_image( GetMask()->GetBitmap(), mask_gc, mask_image, 0, 0, 0, 0, width, height );
+        gdk_draw_image( GetMask()->GetBitmap(), mask_gc, mask_image, 0, 0, 0, 0, width, height );
 
-            gdk_image_destroy( mask_image );
-            gdk_gc_unref( mask_gc );
-        }
+        gdk_image_destroy( mask_image );
+        gdk_gc_unref( mask_gc );
     }
 
-    return TRUE;
+    return true;
 }
 
-wxImage wxBitmap::ConvertToImage() const
+#ifdef __WXGTK20__
+bool wxBitmap::CreateFromImageAsPixbuf(const wxImage& image)
 {
-    // the colour used as transparent one in wxImage and the one it is replaced
-    // with when it really occurs in the bitmap
-    static const int MASK_RED = 1;
-    static const int MASK_GREEN = 2;
-    static const int MASK_BLUE = 3;
-    static const int MASK_BLUE_REPLACEMENT = 2;
+    int width = image.GetWidth();
+    int height = image.GetHeight();
 
-    wxImage image;
+    GdkPixbuf *pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB,
+                                       image.HasAlpha(),
+                                       8 /* bits per sample */,
+                                       width, height);
+    if (!pixbuf)
+        return false;
 
-    wxCHECK_MSG( Ok(), wxNullImage, wxT("invalid bitmap") );
+    wxASSERT( image.HasAlpha() ); // for now
+    wxASSERT( gdk_pixbuf_get_n_channels(pixbuf) == 4 );
+    wxASSERT( gdk_pixbuf_get_width(pixbuf) == width );
+    wxASSERT( gdk_pixbuf_get_height(pixbuf) == height );
 
-    GdkImage *gdk_image = (GdkImage*) NULL;
-    if (GetPixmap())
-    {
-        gdk_image = gdk_image_get( GetPixmap(),
-                                   0, 0,
-                                   GetWidth(), GetHeight() );
-    }
-    else if (GetBitmap())
-    {
-        gdk_image = gdk_image_get( GetBitmap(),
-                                   0, 0,
-                                   GetWidth(), GetHeight() );
-    }
-    else
+    M_BMPDATA->m_pixbuf = pixbuf;
+    SetHeight(height);
+    SetWidth(width);
+    SetDepth(wxTheApp->GetGdkVisual()->depth);
+
+    // Copy the data:
+    unsigned char *in = image.GetData();
+    unsigned char *out = gdk_pixbuf_get_pixels(pixbuf);
+    unsigned char *alpha = image.GetAlpha();
+
+    int rowinc = gdk_pixbuf_get_rowstride(pixbuf) - 4 * width;
+
+    for (int y = 0; y < height; y++, out += rowinc)
     {
-        wxFAIL_MSG( wxT("Ill-formed bitmap") );
+        for (int x = 0; x < width; x++, alpha++, out += 4, in += 3)
+        {
+            out[0] = in[0];
+            out[1] = in[1];
+            out[2] = in[2];
+            out[3] = *alpha;
+        }
     }
 
-    wxCHECK_MSG( gdk_image, wxNullImage, wxT("couldn't create image") );
+    return true;
+}
+#endif // __WXGTK20__
+
+wxImage wxBitmap::ConvertToImage() const
+{
+    wxImage image;
+
+    wxCHECK_MSG( Ok(), wxNullImage, wxT("invalid bitmap") );
 
-    image.Create( GetWidth(), GetHeight() );
-    char unsigned *data = image.GetData();
+    image.Create(GetWidth(), GetHeight());
+    unsigned char *data = image.GetData();
 
     if (!data)
     {
-        gdk_image_destroy( gdk_image );
         wxFAIL_MSG( wxT("couldn't create image") );
         return wxNullImage;
     }
 
-    GdkImage *gdk_image_mask = (GdkImage*) NULL;
-    if (GetMask())
+#ifdef __WXGTK20__
+    if (HasPixbuf())
     {
-        gdk_image_mask = gdk_image_get( GetMask()->GetBitmap(),
-                                        0, 0,
-                                        GetWidth(), GetHeight() );
+        GdkPixbuf *pixbuf = GetPixbuf();
+        wxASSERT( gdk_pixbuf_get_has_alpha(pixbuf) );
 
-        image.SetMaskColour( MASK_RED, MASK_GREEN, MASK_BLUE );
-    }
+        int w = GetWidth();
+        int h = GetHeight();
 
-    int bpp = -1;
-    int red_shift_right = 0;
-    int green_shift_right = 0;
-    int blue_shift_right = 0;
-    int red_shift_left = 0;
-    int green_shift_left = 0;
-    int blue_shift_left = 0;
-    bool use_shift = FALSE;
+        image.SetAlpha();
 
-    if (GetPixmap())
-    {
-        GdkVisual *visual = gdk_window_get_visual( GetPixmap() );
-        if (visual == NULL)
-            visual = wxTheApp->GetGdkVisual();
-
-        bpp = visual->depth;
-        if (bpp == 16)
-            bpp = visual->red_prec + visual->green_prec + visual->blue_prec;
-        red_shift_right = visual->red_shift;
-        red_shift_left = 8-visual->red_prec;
-        green_shift_right = visual->green_shift;
-        green_shift_left = 8-visual->green_prec;
-        blue_shift_right = visual->blue_shift;
-        blue_shift_left = 8-visual->blue_prec;
-
-        use_shift = (visual->type == GDK_VISUAL_TRUE_COLOR) || (visual->type == GDK_VISUAL_DIRECT_COLOR);
+        unsigned char *alpha = image.GetAlpha();
+        unsigned char *in = gdk_pixbuf_get_pixels(pixbuf);
+        unsigned char *out = data;
+        int rowinc = gdk_pixbuf_get_rowstride(pixbuf) - 4 * w;
+
+        for (int y = 0; y < h; y++, in += rowinc)
+        {
+            for (int x = 0; x < w; x++, in += 4, out += 3, alpha++)
+            {
+                out[0] = in[0];
+                out[1] = in[1];
+                out[2] = in[2];
+                *alpha = in[3];
+            }
+        }
     }
-    if (GetBitmap())
+    else
+#endif // __WXGTK20__
     {
-        bpp = 1;
-    }
+        // the colour used as transparent one in wxImage and the one it is
+        // replaced with when it really occurs in the bitmap
+        static const int MASK_RED = 1;
+        static const int MASK_GREEN = 2;
+        static const int MASK_BLUE = 3;
+        static const int MASK_BLUE_REPLACEMENT = 2;
 
+        GdkImage *gdk_image = (GdkImage*) NULL;
 
-    GdkColormap *cmap = gtk_widget_get_default_colormap();
+        if (HasPixmap())
+        {
+            gdk_image = gdk_image_get( GetPixmap(),
+                                       0, 0,
+                                       GetWidth(), GetHeight() );
+        }
+        else if (GetBitmap())
+        {
+            gdk_image = gdk_image_get( GetBitmap(),
+                                       0, 0,
+                                       GetWidth(), GetHeight() );
+        }
+        else
+        {
+            wxFAIL_MSG( wxT("Ill-formed bitmap") );
+        }
 
-    long pos = 0;
-    for (int j = 0; j < GetHeight(); j++)
-    {
-        for (int i = 0; i < GetWidth(); i++)
+        wxCHECK_MSG( gdk_image, wxNullImage, wxT("couldn't create image") );
+
+        GdkImage *gdk_image_mask = (GdkImage*) NULL;
+        if (GetMask())
+        {
+            gdk_image_mask = gdk_image_get( GetMask()->GetBitmap(),
+                                            0, 0,
+                                            GetWidth(), GetHeight() );
+
+            image.SetMaskColour( MASK_RED, MASK_GREEN, MASK_BLUE );
+        }
+
+        int bpp = -1;
+        int red_shift_right = 0;
+        int green_shift_right = 0;
+        int blue_shift_right = 0;
+        int red_shift_left = 0;
+        int green_shift_left = 0;
+        int blue_shift_left = 0;
+        bool use_shift = false;
+
+        if (GetPixmap())
         {
-            wxUint32 pixel = gdk_image_get_pixel( gdk_image, i, j );
-            if (bpp == 1)
+            GdkVisual *visual = gdk_window_get_visual( GetPixmap() );
+            if (visual == NULL)
+                visual = wxTheApp->GetGdkVisual();
+
+            bpp = visual->depth;
+            if (bpp == 16)
+                bpp = visual->red_prec + visual->green_prec + visual->blue_prec;
+            red_shift_right = visual->red_shift;
+            red_shift_left = 8-visual->red_prec;
+            green_shift_right = visual->green_shift;
+            green_shift_left = 8-visual->green_prec;
+            blue_shift_right = visual->blue_shift;
+            blue_shift_left = 8-visual->blue_prec;
+
+            use_shift = (visual->type == GDK_VISUAL_TRUE_COLOR) || (visual->type == GDK_VISUAL_DIRECT_COLOR);
+        }
+        if (GetBitmap())
+        {
+            bpp = 1;
+        }
+
+
+        GdkColormap *cmap = gtk_widget_get_default_colormap();
+
+        long pos = 0;
+        for (int j = 0; j < GetHeight(); j++)
+        {
+            for (int i = 0; i < GetWidth(); i++)
             {
-                if (pixel == 0)
+                wxUint32 pixel = gdk_image_get_pixel( gdk_image, i, j );
+                if (bpp == 1)
                 {
-                    data[pos]   = 0;
-                    data[pos+1] = 0;
-                    data[pos+2] = 0;
+                    if (pixel == 0)
+                    {
+                        data[pos]   = 0;
+                        data[pos+1] = 0;
+                        data[pos+2] = 0;
+                    }
+                    else
+                    {
+                        data[pos]   = 255;
+                        data[pos+1] = 255;
+                        data[pos+2] = 255;
+                    }
                 }
-                else
+                else if (use_shift)
                 {
-                    data[pos]   = 255;
-                    data[pos+1] = 255;
-                    data[pos+2] = 255;
+                    data[pos] =   (pixel >> red_shift_right)   << red_shift_left;
+                    data[pos+1] = (pixel >> green_shift_right) << green_shift_left;
+                    data[pos+2] = (pixel >> blue_shift_right)  << blue_shift_left;
                 }
-            }
-            else if (use_shift)
-            {
-                data[pos] =   (pixel >> red_shift_right)   << red_shift_left;
-                data[pos+1] = (pixel >> green_shift_right) << green_shift_left;
-                data[pos+2] = (pixel >> blue_shift_right)  << blue_shift_left;
-            }
-            else if (cmap->colors)
-            {
-                data[pos] =   cmap->colors[pixel].red   >> 8;
-                data[pos+1] = cmap->colors[pixel].green >> 8;
-                data[pos+2] = cmap->colors[pixel].blue  >> 8;
-            }
-            else
-            {
-                wxFAIL_MSG( wxT("Image conversion failed. Unknown visual type.") );
-            }
-
-            if (gdk_image_mask)
-            {
-                int mask_pixel = gdk_image_get_pixel( gdk_image_mask, i, j );
-                if (mask_pixel == 0)
+                else if (cmap->colors)
                 {
-                    data[pos] = MASK_RED;
-                    data[pos+1] = MASK_GREEN;
-                    data[pos+2] = MASK_BLUE;
+                    data[pos] =   cmap->colors[pixel].red   >> 8;
+                    data[pos+1] = cmap->colors[pixel].green >> 8;
+                    data[pos+2] = cmap->colors[pixel].blue  >> 8;
                 }
-                else if ( data[pos] == MASK_RED &&
-                            data[pos+1] == MASK_GREEN &&
-                                data[pos+2] == MASK_BLUE )
+                else
                 {
-                    data[pos+2] = MASK_BLUE_REPLACEMENT;
+                    wxFAIL_MSG( wxT("Image conversion failed. Unknown visual type.") );
                 }
-            }
 
-            pos += 3;
+                if (gdk_image_mask)
+                {
+                    int mask_pixel = gdk_image_get_pixel( gdk_image_mask, i, j );
+                    if (mask_pixel == 0)
+                    {
+                        data[pos] = MASK_RED;
+                        data[pos+1] = MASK_GREEN;
+                        data[pos+2] = MASK_BLUE;
+                    }
+                    else if ( data[pos] == MASK_RED &&
+                                data[pos+1] == MASK_GREEN &&
+                                    data[pos+2] == MASK_BLUE )
+                    {
+                        data[pos+2] = MASK_BLUE_REPLACEMENT;
+                    }
+                }
+
+                pos += 3;
+            }
         }
-    }
 
-    gdk_image_destroy( gdk_image );
-    if (gdk_image_mask) gdk_image_destroy( gdk_image_mask );
+        gdk_image_destroy( gdk_image );
+        if (gdk_image_mask) gdk_image_destroy( gdk_image_mask );
+    }
 
     return image;
 }
 
 wxBitmap::wxBitmap( const wxBitmap& bmp )
-        : wxGDIObject()
+        : wxBitmapBase()
 {
     Ref( bmp );
 }
 
-wxBitmap::wxBitmap( const wxString &filename, int type )
+wxBitmap::wxBitmap( const wxString &filename, wxBitmapType type )
 {
     LoadFile( filename, type );
 }
@@ -1079,7 +1219,13 @@ bool wxBitmap::operator != ( const wxBitmap& bmp ) const
 
 bool wxBitmap::Ok() const
 {
-    return (m_refData != NULL);
+    return (m_refData != NULL) &&
+           (
+#ifdef __WXGTK20__
+              M_BMPDATA->m_pixbuf ||
+#endif
+              M_BMPDATA->m_bitmap || M_BMPDATA->m_pixmap
+           );
 }
 
 int wxBitmap::GetHeight() const
@@ -1122,7 +1268,7 @@ void wxBitmap::SetMask( wxMask *mask )
 bool wxBitmap::CopyFromIcon(const wxIcon& icon)
 {
     *this = icon;
-    return TRUE;
+    return true;
 }
 
 wxBitmap wxBitmap::GetSubBitmap( const wxRect& rect) const
@@ -1135,22 +1281,37 @@ wxBitmap wxBitmap::GetSubBitmap( const wxRect& rect) const
     wxBitmap ret( rect.width, rect.height, M_BMPDATA->m_bpp );
     wxASSERT_MSG( ret.Ok(), wxT("GetSubBitmap error") );
 
-    if (ret.GetPixmap())
+#ifdef __WXGTK20__
+    if (HasPixbuf())
     {
-        GdkGC *gc = gdk_gc_new( ret.GetPixmap() );
-        gdk_draw_pixmap( ret.GetPixmap(), gc, GetPixmap(), rect.x, rect.y, 0, 0, rect.width, rect.height );
-        gdk_gc_destroy( gc );
+        GdkPixbuf *pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB,
+                                           gdk_pixbuf_get_has_alpha(GetPixbuf()),
+                                           8, GetWidth(), GetHeight());
+        ret.SetPixbuf(pixbuf);
+        gdk_pixbuf_copy_area(GetPixbuf(),
+                             rect.x, rect.y, rect.width, rect.height,
+                             pixbuf, 0, 0);
     }
     else
+#endif // __WXGTK20__
     {
-        GdkGC *gc = gdk_gc_new( ret.GetBitmap() );
-        GdkColor col;
-        col.pixel = 0xFFFFFF;
-        gdk_gc_set_foreground( gc, &col );
-        col.pixel = 0;
-        gdk_gc_set_background( gc, &col );
-        gdk_wx_draw_bitmap( ret.GetBitmap(), gc, GetBitmap(), rect.x, rect.y, 0, 0, rect.width, rect.height );
-        gdk_gc_destroy( gc );
+        if (ret.GetPixmap())
+        {
+            GdkGC *gc = gdk_gc_new( ret.GetPixmap() );
+            gdk_draw_pixmap( ret.GetPixmap(), gc, GetPixmap(), rect.x, rect.y, 0, 0, rect.width, rect.height );
+            gdk_gc_destroy( gc );
+        }
+        else
+        {
+            GdkGC *gc = gdk_gc_new( ret.GetBitmap() );
+            GdkColor col;
+            col.pixel = 0xFFFFFF;
+            gdk_gc_set_foreground( gc, &col );
+            col.pixel = 0;
+            gdk_gc_set_background( gc, &col );
+            gdk_wx_draw_bitmap( ret.GetBitmap(), gc, GetBitmap(), rect.x, rect.y, 0, 0, rect.width, rect.height );
+            gdk_gc_destroy( gc );
+        }
     }
 
     if (GetMask())
@@ -1173,9 +1334,9 @@ wxBitmap wxBitmap::GetSubBitmap( const wxRect& rect) const
     return ret;
 }
 
-bool wxBitmap::SaveFile( const wxString &name, int type, wxPalette *WXUNUSED(palette) )
+bool wxBitmap::SaveFile( const wxString &name, wxBitmapType type, const wxPalette *WXUNUSED(palette) ) const
 {
-    wxCHECK_MSG( Ok(), FALSE, wxT("invalid bitmap") );
+    wxCHECK_MSG( Ok(), false, wxT("invalid bitmap") );
 
     // Try to save the bitmap via wxImage handlers:
     {
@@ -1183,15 +1344,15 @@ bool wxBitmap::SaveFile( const wxString &name, int type, wxPalette *WXUNUSED(pal
         if (image.Ok()) return image.SaveFile( name, type );
     }
 
-    return FALSE;
+    return false;
 }
 
-bool wxBitmap::LoadFile( const wxString &name, int type )
+bool wxBitmap::LoadFile( const wxString &name, wxBitmapType type )
 {
     UnRef();
 
     if (!wxFileExists(name))
-        return FALSE;
+        return false;
 
     GdkVisual *visual = wxTheApp->GetGdkVisual();
 
@@ -1223,12 +1384,12 @@ bool wxBitmap::LoadFile( const wxString &name, int type )
     {
         wxImage image;
         if ( !image.LoadFile( name, type ) || !image.Ok() )
-            return FALSE;
+            return false;
 
         *this = wxBitmap(image);
     }
 
-    return TRUE;
+    return true;
 }
 
 wxPalette *wxBitmap::GetPalette() const
@@ -1239,6 +1400,11 @@ wxPalette *wxBitmap::GetPalette() const
     return M_BMPDATA->m_palette;
 }
 
+void wxBitmap::SetPalette(const wxPalette& WXUNUSED(palette))
+{
+    // TODO
+}
+
 void wxBitmap::SetHeight( int height )
 {
     if (!m_refData)
@@ -1269,6 +1435,9 @@ void wxBitmap::SetPixmap( GdkPixmap *pixmap )
         m_refData = new wxBitmapRefData();
 
     M_BMPDATA->m_pixmap = pixmap;
+#ifdef __WXGTK20__
+    PurgeOtherRepresentations(Pixmap);
+#endif
 }
 
 void wxBitmap::SetBitmap( GdkPixmap *bitmap )
@@ -1277,18 +1446,204 @@ void wxBitmap::SetBitmap( GdkPixmap *bitmap )
         m_refData = new wxBitmapRefData();
 
     M_BMPDATA->m_bitmap = bitmap;
+#ifdef __WXGTK20__
+    PurgeOtherRepresentations(Pixmap);
+#endif
 }
 
 GdkPixmap *wxBitmap::GetPixmap() const
 {
     wxCHECK_MSG( Ok(), (GdkPixmap *) NULL, wxT("invalid bitmap") );
 
+#ifdef __WXGTK20__
+    // create the pixmap on the fly if we use Pixbuf representation:
+    if (HasPixbuf() && !HasPixmap())
+    {
+        delete M_BMPDATA->m_mask;
+        M_BMPDATA->m_mask = new wxMask();
+        gdk_pixbuf_render_pixmap_and_mask(M_BMPDATA->m_pixbuf,
+                                          &M_BMPDATA->m_pixmap,
+                                          &M_BMPDATA->m_mask->m_bitmap,
+                                          128 /*threshold*/);
+    }
+#endif // __WXGTK20__
+
     return M_BMPDATA->m_pixmap;
 }
 
+bool wxBitmap::HasPixmap() const
+{
+    wxCHECK_MSG( Ok(), false, wxT("invalid bitmap") );
+
+    return M_BMPDATA->m_pixmap != NULL;
+}
+
 GdkBitmap *wxBitmap::GetBitmap() const
 {
     wxCHECK_MSG( Ok(), (GdkBitmap *) NULL, wxT("invalid bitmap") );
 
     return M_BMPDATA->m_bitmap;
 }
+
+#ifdef __WXGTK20__
+GdkPixbuf *wxBitmap::GetPixbuf() const
+{
+    wxCHECK_MSG( Ok(), NULL, wxT("invalid bitmap") );
+
+    if (HasPixmap() && !HasPixbuf())
+    {
+        int width = GetWidth();
+        int height = GetHeight();
+
+        GdkPixbuf *pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB,
+                                           GetMask() != NULL,
+                                           8, width, height);
+        M_BMPDATA->m_pixbuf =
+            gdk_pixbuf_get_from_drawable(pixbuf, M_BMPDATA->m_pixmap, NULL,
+                                         0, 0, 0, 0, width, height);
+
+        // apply the mask to created pixbuf:
+        if (M_BMPDATA->m_pixbuf && M_BMPDATA->m_mask)
+        {
+            GdkPixbuf *pmask =
+                gdk_pixbuf_get_from_drawable(NULL,
+                                             M_BMPDATA->m_mask->GetBitmap(),
+                                             NULL,
+                                             0, 0, 0, 0, width, height);
+            if (pmask)
+            {
+                guchar *bmp = gdk_pixbuf_get_pixels(pixbuf);
+                guchar *mask = gdk_pixbuf_get_pixels(pmask);
+                int bmprowinc = gdk_pixbuf_get_rowstride(pixbuf) - 4 * width;
+                int maskrowinc = gdk_pixbuf_get_rowstride(pmask) - 3 * width;
+
+                for (int y = 0; y < height;
+                     y++, bmp += bmprowinc, mask += maskrowinc)
+                {
+                    for (int x = 0; x < width; x++, bmp += 4, mask += 3)
+                    {
+                        if (mask[0] == 0 /*black pixel*/)
+                            bmp[3] = 0;
+                    }
+                }
+
+                gdk_pixbuf_unref(pmask);
+            }
+        }
+    }
+
+    return M_BMPDATA->m_pixbuf;
+}
+
+bool wxBitmap::HasPixbuf() const
+{
+    wxCHECK_MSG( Ok(), false, wxT("invalid bitmap") );
+
+    return M_BMPDATA->m_pixbuf != NULL;
+}
+
+void wxBitmap::SetPixbuf( GdkPixbuf *pixbuf )
+{
+    if (!m_refData)
+        m_refData = new wxBitmapRefData();
+
+    M_BMPDATA->m_pixbuf = pixbuf;
+    PurgeOtherRepresentations(Pixbuf);
+}
+
+void wxBitmap::PurgeOtherRepresentations(wxBitmap::Representation keep)
+{
+    if (keep == Pixmap && HasPixbuf())
+    {
+        gdk_pixbuf_unref( M_BMPDATA->m_pixbuf );
+        M_BMPDATA->m_pixbuf = NULL;
+    }
+    if (keep == Pixbuf && HasPixmap())
+    {
+        gdk_pixmap_unref( M_BMPDATA->m_pixmap );
+        M_BMPDATA->m_pixmap = NULL;
+    }
+}
+
+#endif // __WXGTK20__
+
+void *wxBitmap::GetRawData(wxPixelDataBase& data, int bpp)
+{
+#ifdef __WXGTK20__
+    if (bpp != 32)
+        return NULL;
+
+    GdkPixbuf *pixbuf = GetPixbuf();
+    if (!pixbuf)
+        return NULL;
+
+#if 0
+    if (gdk_pixbuf_get_has_alpha( pixbuf ))
+        wxPrintf( wxT("Has alpha\n") );
+    else
+        wxPrintf( wxT("No alpha.\n") );
+#endif
+
+    data.m_height = gdk_pixbuf_get_height( pixbuf );
+    data.m_width = gdk_pixbuf_get_width( pixbuf );
+    data.m_stride = gdk_pixbuf_get_rowstride( pixbuf );
+
+    return gdk_pixbuf_get_pixels( pixbuf );
+#else
+    return NULL;
+#endif
+}
+
+void wxBitmap::UngetRawData(wxPixelDataBase& data)
+{
+}
+
+
+bool wxBitmap::HasAlpha() const
+{
+#ifdef __WXGTK20__
+    return HasPixbuf();
+#else
+    return false;
+#endif
+}
+
+void wxBitmap::UseAlpha()
+{
+#ifdef __WXGTK20__
+    GetPixbuf();
+#endif
+}
+
+//-----------------------------------------------------------------------------
+// wxBitmapHandler
+//-----------------------------------------------------------------------------
+
+IMPLEMENT_DYNAMIC_CLASS(wxBitmapHandler,wxBitmapHandlerBase)
+
+wxBitmapHandler::~wxBitmapHandler()
+{
+}
+
+bool wxBitmapHandler::Create(wxBitmap *bitmap, void *data, long type, int width, int height, int depth)
+{
+    return false;
+}
+
+bool wxBitmapHandler::LoadFile(wxBitmap *bitmap, const wxString& name, long flags,
+        int desiredWidth, int desiredHeight)
+{
+    return false;
+}
+
+bool wxBitmapHandler::SaveFile(const wxBitmap *bitmap, const wxString& name, int type, const wxPalette *palette)
+{
+    return false;
+}
+
+/* static */ void wxBitmap::InitStandardHandlers()
+{
+    // TODO: Insert handler based on GdkPixbufs handler later
+}
+
+