Forward port new wxRenderer methods in 2.8 to trunk.

[wxWidgets.git] / src / gtk / bitmap.cpp

diff --git a/src/gtk/bitmap.cpp b/src/gtk/bitmap.cpp
index 4fcbd352e0de2b5fa8c6799907d96929f2ee35cc..1be0bb94a42ae9f8909f35cefc3c15906f7a59dc 100644 (file)
--- a/src/gtk/bitmap.cpp
+++ b/src/gtk/bitmap.cpp
@@ -1,21 +1,37 @@
 /////////////////////////////////////////////////////////////////////////////
 /////////////////////////////////////////////////////////////////////////////

-// Name:        bitmap.cpp
+// Name:        src/gtk/bitmap.cpp

 // Purpose:
 // Author:      Robert Roebling
 // RCS-ID:      $Id$
 // Copyright:   (c) 1998 Robert Roebling
 // Purpose:
 // Author:      Robert Roebling
 // RCS-ID:      $Id$
 // Copyright:   (c) 1998 Robert Roebling

-// Licence:    wxWindows licence
+// Licence:     wxWindows licence

 /////////////////////////////////////////////////////////////////////////////
 
 /////////////////////////////////////////////////////////////////////////////
 

-#ifdef __GNUG__
-#pragma implementation "bitmap.h"
-#endif
+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"

 
 #include "wx/bitmap.h"
 
 #include "wx/bitmap.h"

-#include "wx/icon.h"
-#include "wx/filefn.h"
-#include "gdk/gdkprivate.h"
-#include "gdk/gdkx.h"
+
+#ifndef WX_PRECOMP
+    #include "wx/app.h"
+    #include "wx/palette.h"
+    #include "wx/icon.h"
+    #include "wx/math.h"
+    #include "wx/image.h"
+    #include "wx/colour.h"
+#endif
+
+#include "wx/rawbmp.h"
+
+#include "wx/gtk/private/object.h"
+
+#include <gtk/gtk.h>
+
+//-----------------------------------------------------------------------------
+// data
+//-----------------------------------------------------------------------------
+
+extern GtkWidget *wxGetRootWindow();

 
 //-----------------------------------------------------------------------------
 // wxMask
 
 //-----------------------------------------------------------------------------
 // wxMask


@@ -23,600 +39,937 @@
 
 IMPLEMENT_DYNAMIC_CLASS(wxMask,wxObject)
 
 
 IMPLEMENT_DYNAMIC_CLASS(wxMask,wxObject)
 

-wxMask::wxMask(void)
+wxMask::wxMask()

 {
     m_bitmap = (GdkBitmap *) NULL;
 }
 
 {
     m_bitmap = (GdkBitmap *) NULL;
 }
 

-wxMask::wxMask( const wxBitmap& WXUNUSED(bitmap), const wxColour& WXUNUSED(colour) )
+wxMask::wxMask( const wxBitmap& bitmap, const wxColour& colour )

 {
 {

+    m_bitmap = (GdkBitmap *) NULL;
+    Create( bitmap, colour );
+}
+
+#if wxUSE_PALETTE
+wxMask::wxMask( const wxBitmap& bitmap, int paletteIndex )
+{
+    m_bitmap = (GdkBitmap *) NULL;
+    Create( bitmap, paletteIndex );
+}
+#endif // wxUSE_PALETTE
+
+wxMask::wxMask( const wxBitmap& bitmap )
+{
+    m_bitmap = (GdkBitmap *) NULL;
+    Create( bitmap );

 }
 
 }
 

-wxMask::wxMask( const wxBitmap& WXUNUSED(bitmap), int WXUNUSED(paletteIndex) )
+wxMask::~wxMask()

 {
 {

+    if (m_bitmap)
+        g_object_unref (m_bitmap);
+}
+
+bool wxMask::Create( const wxBitmap& bitmap,
+                     const wxColour& colour )
+{
+    if (m_bitmap)
+    {
+        g_object_unref (m_bitmap);
+        m_bitmap = (GdkBitmap*) NULL;
+    }
+
+    const int w = bitmap.GetWidth();
+    const int h = bitmap.GetHeight();
+
+    // create mask as XBM format bitmap
+
+    // one bit per pixel, each row starts on a byte boundary
+    const size_t out_size = size_t((w + 7) / 8) * unsigned(h);
+    wxByte* out = new wxByte[out_size];
+    // set bits are unmasked
+    memset(out, 0xff, out_size);
+    unsigned bit_index = 0;
+    if (bitmap.HasPixbuf())
+    {
+        const wxByte r_mask = colour.Red();
+        const wxByte g_mask = colour.Green();
+        const wxByte b_mask = colour.Blue();
+        GdkPixbuf* pixbuf = bitmap.GetPixbuf();
+        const wxByte* in = gdk_pixbuf_get_pixels(pixbuf);
+        const int inc = 3 + int(gdk_pixbuf_get_has_alpha(pixbuf) != 0);
+        const int rowpadding = gdk_pixbuf_get_rowstride(pixbuf) - inc * w;
+        for (int y = 0; y < h; y++, in += rowpadding)
+        {
+            for (int x = 0; x < w; x++, in += inc, bit_index++)
+                if (in[0] == r_mask && in[1] == g_mask && in[2] == b_mask)
+                    out[bit_index >> 3] ^= 1 << (bit_index & 7);
+            // move index to next byte boundary
+            bit_index = (bit_index + 7) & ~7u;
+        }
+    }
+    else
+    {
+        GdkImage* image = gdk_drawable_get_image(bitmap.GetPixmap(), 0, 0, w, h);
+        GdkColormap* colormap = gdk_image_get_colormap(image);
+        guint32 mask_pixel;
+        if (colormap == NULL)
+            // mono bitmap, white is pixel value 0
+            mask_pixel = guint32(colour.Red() != 255 || colour.Green() != 255 || colour.Blue() != 255);
+        else
+        {
+            wxColor c(colour);
+            c.CalcPixel(colormap);
+            mask_pixel = c.GetPixel();
+        }
+        for (int y = 0; y < h; y++)
+        {
+            for (int x = 0; x < w; x++, bit_index++)
+                if (gdk_image_get_pixel(image, x, y) == mask_pixel)
+                    out[bit_index >> 3] ^= 1 << (bit_index & 7);
+            bit_index = (bit_index + 7) & ~7u;
+        }
+        g_object_unref(image);
+    }
+    m_bitmap = gdk_bitmap_create_from_data(wxGetRootWindow()->window, (char*)out, w, h);
+    delete[] out;
+    return true;

 }
 
 }
 

-wxMask::wxMask( const wxBitmap& WXUNUSED(bitmap) )
+#if wxUSE_PALETTE
+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") );
+
+    pal->GetRGB(paletteIndex, &r, &g, &b);
+
+    return Create(bitmap, wxColour(r, g, b));

 }
 }

+#endif // wxUSE_PALETTE

 
 

-wxMask::~wxMask(void)
+bool wxMask::Create( const wxBitmap& bitmap )

 {
 {

-    if (m_bitmap) gdk_bitmap_unref( m_bitmap );
+    if (m_bitmap)
+    {
+        g_object_unref (m_bitmap);
+        m_bitmap = (GdkBitmap*) NULL;
+    }
+
+    if (!bitmap.Ok()) return false;
+
+    wxCHECK_MSG( bitmap.GetDepth() == 1, 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;
+
+    wxGtkObject<GdkGC> gc(gdk_gc_new( m_bitmap ));
+    gdk_gc_set_function(gc, GDK_COPY_INVERT);
+    gdk_draw_drawable(m_bitmap, gc, bitmap.GetPixmap(), 0, 0, 0, 0, bitmap.GetWidth(), bitmap.GetHeight());
+
+    return true;

 }
 
 }
 

-GdkBitmap *wxMask::GetBitmap(void) const
+GdkBitmap *wxMask::GetBitmap() const

 {
     return m_bitmap;
 }
 {
     return m_bitmap;
 }

-  
+

 //-----------------------------------------------------------------------------
 // wxBitmap
 //-----------------------------------------------------------------------------
 
 //-----------------------------------------------------------------------------
 // wxBitmap
 //-----------------------------------------------------------------------------
 

-class wxBitmapRefData: public wxObjectRefData
+class wxBitmapRefData: public wxGDIRefData

 {
 public:
 {
 public:

-  wxBitmapRefData(void);
-  ~wxBitmapRefData(void);
-  
-  GdkPixmap      *m_pixmap;
-  GdkBitmap      *m_bitmap;
-  wxMask         *m_mask;
-  int             m_width;
-  int             m_height;
-  int             m_bpp;
-  wxPalette      *m_palette;
+    wxBitmapRefData();
+    virtual ~wxBitmapRefData();
+
+    virtual bool IsOk() const { return m_pixmap || m_pixbuf; }
+
+    GdkPixmap      *m_pixmap;
+    GdkPixbuf      *m_pixbuf;
+    wxMask         *m_mask;
+    int             m_width;
+    int             m_height;
+    int             m_bpp;
+#if wxUSE_PALETTE
+    wxPalette      *m_palette;
+#endif // wxUSE_PALETTE

 };
 
 };
 

-wxBitmapRefData::wxBitmapRefData(void)
+wxBitmapRefData::wxBitmapRefData()

 {
     m_pixmap = (GdkPixmap *) NULL;
 {
     m_pixmap = (GdkPixmap *) NULL;

-    m_bitmap = (GdkBitmap *) NULL;
+    m_pixbuf = (GdkPixbuf *) NULL;

     m_mask = (wxMask *) NULL;
     m_width = 0;
     m_height = 0;
     m_bpp = 0;
     m_mask = (wxMask *) NULL;
     m_width = 0;
     m_height = 0;
     m_bpp = 0;

+#if wxUSE_PALETTE

     m_palette = (wxPalette *) NULL;
     m_palette = (wxPalette *) NULL;

+#endif // wxUSE_PALETTE

 }
 
 }
 

-wxBitmapRefData::~wxBitmapRefData(void)
+wxBitmapRefData::~wxBitmapRefData()

 {
 {

-    if (m_pixmap) gdk_pixmap_unref( m_pixmap );
-    if (m_bitmap) gdk_bitmap_unref( m_bitmap );
-    if (m_mask) delete m_mask;
-    if (m_palette) delete m_palette;
+    if (m_pixmap)
+        g_object_unref (m_pixmap);
+    if (m_pixbuf)
+        g_object_unref (m_pixbuf);
+    delete m_mask;
+#if wxUSE_PALETTE
+    delete m_palette;
+#endif // wxUSE_PALETTE

 }
 
 //-----------------------------------------------------------------------------
 
 }
 
 //-----------------------------------------------------------------------------
 

-#define M_BMPDATA ((wxBitmapRefData *)m_refData)
+#define M_BMPDATA static_cast<wxBitmapRefData*>(m_refData)

 
 IMPLEMENT_DYNAMIC_CLASS(wxBitmap,wxGDIObject)
 
 
 IMPLEMENT_DYNAMIC_CLASS(wxBitmap,wxGDIObject)
 

-wxBitmap::wxBitmap(void)
+wxBitmap::wxBitmap(int width, int height, int depth)

 {
 {

-    if (wxTheBitmapList) wxTheBitmapList->AddBitmap(this);
+    Create(width, height, depth);

 }
 }

-  
-wxBitmap::wxBitmap( int width, int height, int depth )
-{
-    wxCHECK_RET( (width > 0) && (height > 0), "invalid bitmap size" )
-    wxCHECK_RET( (depth > 0) || (depth == -1), "invalid bitmap depth" )

 
 

-    m_refData = new wxBitmapRefData();
-  
-    GdkWindow *parent = (GdkWindow*) &gdk_root_parent;
-  
-    M_BMPDATA->m_mask = (wxMask *) NULL;
-    M_BMPDATA->m_pixmap = gdk_pixmap_new( parent, width, height, depth );
-    M_BMPDATA->m_width = width;
-    M_BMPDATA->m_height = height;
-    M_BMPDATA->m_bpp = gdk_window_get_visual( parent )->depth;
-   
-    if (wxTheBitmapList) wxTheBitmapList->AddBitmap(this);
+wxBitmap::wxBitmap(const wxString &filename, wxBitmapType type)
+{
+    LoadFile(filename, type);

 }
 
 }
 

-wxBitmap::wxBitmap( const char **bits )
+wxBitmap::wxBitmap(const char bits[], int width, int height, int depth)

 {
 {

-    wxCHECK_RET( bits != NULL, "invalid bitmap data" )
-  
-    m_refData = new wxBitmapRefData();
-
-    GdkBitmap *mask = (GdkBitmap*) NULL;
-    GdkWindow *parent = (GdkWindow*) &gdk_root_parent;
-  
-    M_BMPDATA->m_pixmap = gdk_pixmap_create_from_xpm_d( parent, &mask, NULL, (gchar **) bits );
-    
-    if (mask)
+    wxASSERT(depth == 1);
+    if (width > 0 && height > 0 && depth == 1)

     {
     {

-        M_BMPDATA->m_mask = new wxMask();
-        M_BMPDATA->m_mask->m_bitmap = mask;
+        SetPixmap(gdk_bitmap_create_from_data(wxGetRootWindow()->window, bits, width, height));
+
+        wxASSERT_MSG( M_BMPDATA->m_pixmap, wxT("couldn't create bitmap") );

     }
     }

-  
-    gdk_window_get_size( M_BMPDATA->m_pixmap, &(M_BMPDATA->m_width), &(M_BMPDATA->m_height) );
-  
-    M_BMPDATA->m_bpp = gdk_window_get_visual( parent )->depth;  // ?
-    if (wxTheBitmapList) wxTheBitmapList->AddBitmap(this);
-}
-  
-wxBitmap::wxBitmap( char **bits )
-{
-    wxCHECK_RET( bits != NULL, "invalid bitmap data" )
-  
-    m_refData = new wxBitmapRefData();
-
-    GdkBitmap *mask = (GdkBitmap*) NULL;
-    GdkWindow *parent = (GdkWindow*) &gdk_root_parent;
-  
-    M_BMPDATA->m_pixmap = gdk_pixmap_create_from_xpm_d( parent, &mask, NULL, (gchar **) bits );
-    
-    if (mask)
+}
+
+wxBitmap::wxBitmap(const char* const* bits)
+{
+    wxCHECK2_MSG(bits != NULL, return, wxT("invalid bitmap data"));
+
+    GdkBitmap* mask = NULL;
+    SetPixmap(gdk_pixmap_create_from_xpm_d(wxGetRootWindow()->window, &mask, NULL, const_cast<char**>(bits)));
+
+    if (M_BMPDATA->m_pixmap != NULL && mask != NULL)

     {
     {

-        M_BMPDATA->m_mask = new wxMask();
+        M_BMPDATA->m_mask = new wxMask;

         M_BMPDATA->m_mask->m_bitmap = mask;
     }
         M_BMPDATA->m_mask->m_bitmap = mask;
     }

-  
-    gdk_window_get_size( M_BMPDATA->m_pixmap, &(M_BMPDATA->m_width), &(M_BMPDATA->m_height) );
-  
-    M_BMPDATA->m_bpp = gdk_window_get_visual( parent )->depth;  // ?
-    if (wxTheBitmapList) wxTheBitmapList->AddBitmap(this);
-}
-  
-wxBitmap::wxBitmap( const wxBitmap& bmp )
-{
-    Ref( bmp );
-   
-    if (wxTheBitmapList) wxTheBitmapList->AddBitmap(this);
-}
-  
-wxBitmap::wxBitmap( const wxBitmap* bmp )
-{
-    if (bmp) Ref( *bmp );
-   
-    if (wxTheBitmapList) wxTheBitmapList->AddBitmap(this);

 }
 
 }
 

-wxBitmap::wxBitmap( const wxString &filename, int type )
+wxBitmap::~wxBitmap()

 {
 {

-    LoadFile( filename, type );
-  
-    if (wxTheBitmapList) wxTheBitmapList->AddBitmap(this);

 }
 
 }
 

-wxBitmap::wxBitmap( const char bits[], int width, int height, int WXUNUSED(depth))
+bool wxBitmap::Create( int width, int height, int depth )

 {
 {

-    m_refData = new wxBitmapRefData();
+    UnRef();

 
 

-    M_BMPDATA->m_mask = (wxMask *) NULL;
-    M_BMPDATA->m_bitmap = 
-      gdk_bitmap_create_from_data( (GdkWindow*) &gdk_root_parent, (gchar *) bits, width, height );
-    M_BMPDATA->m_width = width;
-    M_BMPDATA->m_height = height;
-    M_BMPDATA->m_bpp = 1;
+    if ( width <= 0 || height <= 0 )
+    {
+        return false;
+    }

 
 

-    if (wxTheBitmapList) wxTheBitmapList->AddBitmap(this);
-}
-  
-wxBitmap::~wxBitmap(void)
-{
-    if (wxTheBitmapList) wxTheBitmapList->DeleteObject(this);
-}
-  
-wxBitmap& wxBitmap::operator = ( const wxBitmap& bmp )
-{
-    if (*this == bmp) return (*this); 
-    Ref( bmp ); 
-    return *this; 
-}
-  
-bool wxBitmap::operator == ( const wxBitmap& bmp )
-{
-    return m_refData == bmp.m_refData; 
+    const GdkVisual* visual = wxTheApp->GetGdkVisual();
+    
+    if (depth == 32)
+    {
+        SetPixbuf(gdk_pixbuf_new(GDK_COLORSPACE_RGB, true, 8, width, height), 32);
+        // must initialize alpha, otherwise GetPixmap()
+        // will create a mask out of garbage
+        gdk_pixbuf_fill(M_BMPDATA->m_pixbuf, 0x000000ff);
+    } else
+    if (depth == 24)
+    {
+        if (visual->depth == depth)
+            SetPixmap(gdk_pixmap_new(wxGetRootWindow()->window, width, height, depth));
+        else
+            SetPixbuf(gdk_pixbuf_new(GDK_COLORSPACE_RGB, false, 8, width, height), 24);
+    }
+    else
+    {
+        if (depth != 1)
+        {
+            if (depth == -1)
+                depth = visual->depth;
+        }
+        SetPixmap(gdk_pixmap_new(wxGetRootWindow()->window, width, height, depth));
+    }
+
+    return Ok();

 }
 }

-  
-bool wxBitmap::operator != ( const wxBitmap& bmp )
+
+wxBitmap wxBitmap::Rescale(int clipx, int clipy, int clipwidth, int clipheight,
+                           int width, int height) const

 {
 {

-    return m_refData != bmp.m_refData; 
+    wxBitmap bmp;
+
+    wxCHECK_MSG(Ok(), bmp, wxT("invalid bitmap"));
+
+    width = wxMax(width, 1);
+    height = wxMax(height, 1);
+
+    const double scale_x = double(width) / clipwidth;
+    const double scale_y = double(height) / clipheight;
+
+    // Converting to pixbuf, scaling with gdk_pixbuf_scale, and converting
+    // back, is faster than scaling pixmap ourselves.
+
+    // use pixbuf if already available,
+    // otherwise create temporary pixbuf from pixmap
+    GdkPixbuf* pixbuf = M_BMPDATA->m_pixbuf;
+    if (pixbuf)
+        g_object_ref(pixbuf);
+    else
+        pixbuf = gdk_pixbuf_get_from_drawable(
+            NULL, M_BMPDATA->m_pixmap, NULL,
+            0, 0, 0, 0, M_BMPDATA->m_width, M_BMPDATA->m_height);
+
+    // new pixbuf for scaled wxBitmap
+    GdkPixbuf* pixbuf_scaled = gdk_pixbuf_new(
+        GDK_COLORSPACE_RGB, gdk_pixbuf_get_has_alpha(pixbuf), 8, width, height);
+
+    // GDK_INTERP_NEAREST is the lowest-quality method for continuous-tone
+    // images, but the only one which preserves sharp edges
+    gdk_pixbuf_scale(
+        pixbuf, pixbuf_scaled,
+        0, 0, width, height, -clipx*scale_x, -clipy*scale_y, scale_x, scale_y,
+        GDK_INTERP_NEAREST);
+
+    g_object_unref(pixbuf);
+    bmp.SetPixbuf(pixbuf_scaled, M_BMPDATA->m_bpp);
+
+    if (M_BMPDATA->m_mask)
+    {
+        pixbuf = gdk_pixbuf_get_from_drawable(
+            NULL, M_BMPDATA->m_mask->m_bitmap, NULL,
+            0, 0, 0, 0, M_BMPDATA->m_width, M_BMPDATA->m_height);
+
+        pixbuf_scaled = gdk_pixbuf_new(
+            GDK_COLORSPACE_RGB, false, 8, width, height);
+
+        gdk_pixbuf_scale(
+            pixbuf, pixbuf_scaled,
+            0, 0, width, height, -clipx, -clipy, scale_x, scale_y,
+            GDK_INTERP_NEAREST);
+
+        g_object_unref(pixbuf);
+
+        // use existing functionality to create mask from scaled pixbuf
+        wxBitmap maskbmp;
+        maskbmp.SetPixbuf(pixbuf_scaled);
+        bmp.SetMask(new wxMask(maskbmp, *wxBLACK));
+    }
+    return bmp;

 }
 }

-  
-bool wxBitmap::Ok(void) const
+
+#if wxUSE_IMAGE
+
+bool wxBitmap::CreateFromImage(const wxImage& image, int depth)

 {
 {

-    return (m_refData != NULL);
+    UnRef();
+
+    wxCHECK_MSG( image.Ok(), false, wxT("invalid image") );
+    wxCHECK_MSG( depth == -1 || depth == 1, false, wxT("invalid bitmap depth") );
+
+    if (image.GetWidth() <= 0 || image.GetHeight() <= 0)
+        return false;
+
+    // create pixbuf if image has alpha and requested depth is compatible
+    if (image.HasAlpha() && (depth == -1 || depth == 32))
+        return CreateFromImageAsPixbuf(image);
+
+    // otherwise create pixmap, if alpha is present it will be converted to mask
+    return CreateFromImageAsPixmap(image, depth);

 }
 }

-  
-int wxBitmap::GetHeight(void) const
+
+bool wxBitmap::CreateFromImageAsPixmap(const wxImage& image, int depth)

 {
 {

-    if (!Ok())
+    const int w = image.GetWidth();
+    const int h = image.GetHeight();
+    if (depth == 1)
+    {
+        // create XBM format bitmap
+
+        // one bit per pixel, each row starts on a byte boundary
+        const size_t out_size = size_t((w + 7) / 8) * unsigned(h);
+        wxByte* out = new wxByte[out_size];
+        // set bits are black
+        memset(out, 0xff, out_size);
+        const wxByte* in = image.GetData();
+        unsigned bit_index = 0;
+        for (int y = 0; y < h; y++)
+        {
+            for (int x = 0; x < w; x++, in += 3, bit_index++)
+                if (in[0] == 255 && in[1] == 255 && in[2] == 255)
+                    out[bit_index >> 3] ^= 1 << (bit_index & 7);
+            // move index to next byte boundary
+            bit_index = (bit_index + 7) & ~7u;
+        }
+        SetPixmap(gdk_bitmap_create_from_data(wxGetRootWindow()->window, (char*)out, w, h));
+        delete[] out;
+    }
+    else

     {
     {

-        wxFAIL_MSG( "invalid bitmap" );
-        return -1;
+        SetPixmap(gdk_pixmap_new(wxGetRootWindow()->window, w, h, depth));
+        wxGtkObject<GdkGC> gc(gdk_gc_new(M_BMPDATA->m_pixmap));
+        gdk_draw_rgb_image(
+            M_BMPDATA->m_pixmap, gc,
+            0, 0, w, h,
+            GDK_RGB_DITHER_NONE, image.GetData(), w * 3);

     }
 
     }
 

-    return M_BMPDATA->m_height;
+    const wxByte* alpha = image.GetAlpha();
+    if (alpha != NULL || image.HasMask())
+    {
+        // create mask as XBM format bitmap
+
+        const size_t out_size = size_t((w + 7) / 8) * unsigned(h);
+        wxByte* out = new wxByte[out_size];
+        memset(out, 0xff, out_size);
+        unsigned bit_index = 0;
+        if (alpha != NULL)
+        {
+            for (int y = 0; y < h; y++)
+            {
+                for (int x = 0; x < w; x++, bit_index++)
+                    if (*alpha++ < wxIMAGE_ALPHA_THRESHOLD)
+                        out[bit_index >> 3] ^= 1 << (bit_index & 7);
+                bit_index = (bit_index + 7) & ~7u;
+            }
+        }
+        else
+        {
+            const wxByte r_mask = image.GetMaskRed();
+            const wxByte g_mask = image.GetMaskGreen();
+            const wxByte b_mask = image.GetMaskBlue();
+            const wxByte* in = image.GetData();
+            for (int y = 0; y < h; y++)
+            {
+                for (int x = 0; x < w; x++, in += 3, bit_index++)
+                    if (in[0] == r_mask && in[1] == g_mask && in[2] == b_mask)
+                        out[bit_index >> 3] ^= 1 << (bit_index & 7);
+                bit_index = (bit_index + 7) & ~7u;
+            }
+        }
+        wxMask* mask = new wxMask;
+        mask->m_bitmap = gdk_bitmap_create_from_data(M_BMPDATA->m_pixmap, (char*)out, w, h);
+        SetMask(mask);
+        delete[] out;
+    }
+    return true;

 }
 
 }
 

-int wxBitmap::GetWidth(void) const
+bool wxBitmap::CreateFromImageAsPixbuf(const wxImage& image)

 {
 {

-    if (!Ok())
+    wxASSERT(image.HasAlpha());
+
+    int width = image.GetWidth();
+    int height = image.GetHeight();
+
+    Create(width, height, 32);
+    GdkPixbuf* pixbuf = M_BMPDATA->m_pixbuf;
+    if (!pixbuf)
+        return false;
+
+    // Copy the data:
+    const unsigned char* in = image.GetData();
+    unsigned char *out = gdk_pixbuf_get_pixels(pixbuf);
+    unsigned char *alpha = image.GetAlpha();
+
+    int rowpad = gdk_pixbuf_get_rowstride(pixbuf) - 4 * width;
+
+    for (int y = 0; y < height; y++, out += rowpad)

     {
     {

-        wxFAIL_MSG( "invalid bitmap" );
-        return -1;
+        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;
+        }

     }
     }

-  
-    return M_BMPDATA->m_width;
+
+    return true;

 }
 
 }
 

-int wxBitmap::GetDepth(void) const
+wxImage wxBitmap::ConvertToImage() const

 {
 {

-    if (!Ok())
+    wxCHECK_MSG( Ok(), wxNullImage, wxT("invalid bitmap") );
+
+    const int w = GetWidth();
+    const int h = GetHeight();
+    wxImage image(w, h, false);
+    unsigned char *data = image.GetData();
+
+    wxCHECK_MSG(data != NULL, wxNullImage, wxT("couldn't create image") );
+
+    // prefer pixbuf if available, it will preserve alpha and should be quicker
+    if (HasPixbuf())

     {
     {

-        wxFAIL_MSG( "invalid bitmap" );
-        return -1;
+        GdkPixbuf *pixbuf = GetPixbuf();
+        unsigned char* alpha = NULL;
+        if (gdk_pixbuf_get_has_alpha(pixbuf))
+        {
+            image.SetAlpha();
+            alpha = image.GetAlpha();
+        }
+        const unsigned char* in = gdk_pixbuf_get_pixels(pixbuf);
+        unsigned char *out = data;
+        const int inc = 3 + int(alpha != NULL);
+        const int rowpad = gdk_pixbuf_get_rowstride(pixbuf) - inc * w;
+
+        for (int y = 0; y < h; y++, in += rowpad)
+        {
+            for (int x = 0; x < w; x++, in += inc, out += 3)
+            {
+                out[0] = in[0];
+                out[1] = in[1];
+                out[2] = in[2];
+                if (alpha != NULL)
+                    *alpha++ = in[3];
+            }
+        }

     }
     }

-  
-    return M_BMPDATA->m_bpp;
+    else
+    {
+        GdkPixmap* pixmap = GetPixmap();
+        GdkPixmap* pixmap_invert = NULL;
+        if (GetDepth() == 1)
+        {
+            // mono bitmaps are inverted, i.e. 0 is white
+            pixmap_invert = gdk_pixmap_new(pixmap, w, h, 1);
+            wxGtkObject<GdkGC> gc(gdk_gc_new(pixmap_invert));
+            gdk_gc_set_function(gc, GDK_COPY_INVERT);
+            gdk_draw_drawable(pixmap_invert, gc, pixmap, 0, 0, 0, 0, w, h);
+            pixmap = pixmap_invert;
+        }
+        // create a pixbuf which shares data with the wxImage
+        GdkPixbuf* pixbuf = gdk_pixbuf_new_from_data(
+            data, GDK_COLORSPACE_RGB, false, 8, w, h, 3 * w, NULL, NULL);
+
+        gdk_pixbuf_get_from_drawable(pixbuf, pixmap, NULL, 0, 0, 0, 0, w, h);
+
+        g_object_unref(pixbuf);
+        if (pixmap_invert != NULL)
+            g_object_unref(pixmap_invert);
+    }
+    // convert mask, unless there is already alpha
+    if (GetMask() && !image.HasAlpha())
+    {
+        // we hard code the mask colour for now but we could also make an
+        // effort (and waste time) to choose a colour not present in the
+        // image already to avoid having to fudge the pixels below --
+        // whether it's worth to do it is unclear however
+        const int MASK_RED = 1;
+        const int MASK_GREEN = 2;
+        const int MASK_BLUE = 3;
+        const int MASK_BLUE_REPLACEMENT = 2;
+
+        image.SetMaskColour(MASK_RED, MASK_GREEN, MASK_BLUE);
+        GdkImage* image_mask = gdk_drawable_get_image(GetMask()->GetBitmap(), 0, 0, w, h);
+
+        for (int y = 0; y < h; y++)
+        {
+            for (int x = 0; x < w; x++, data += 3)
+            {
+                if (gdk_image_get_pixel(image_mask, x, y) == 0)
+                {
+                    data[0] = MASK_RED;
+                    data[1] = MASK_GREEN;
+                    data[2] = MASK_BLUE;
+                }
+                else if (data[0] == MASK_RED && data[1] == MASK_GREEN && data[2] == MASK_BLUE)
+                {
+                    // we have to fudge the colour a bit to prevent
+                    // this pixel from appearing transparent
+                    data[2] = MASK_BLUE_REPLACEMENT;
+                }
+            }
+        }
+        g_object_unref(image_mask);
+    }
+
+    return image;

 }
 
 }
 

-void wxBitmap::SetHeight( int height )
+#endif // wxUSE_IMAGE
+
+int wxBitmap::GetHeight() const

 {
 {

-    if (!Ok()) return;
-  
-    wxFAIL_MSG( "wxBitmap::SetHeight not implemented" );
-  
-    M_BMPDATA->m_height = height;
+    wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
+
+    return M_BMPDATA->m_height;

 }
 
 }
 

-void wxBitmap::SetWidth( int width )
+int wxBitmap::GetWidth() const

 {
 {

-    if (!Ok()) return;
-  
-    wxFAIL_MSG( "wxBitmap::SetWidth not implemented" );
-  
-    M_BMPDATA->m_width = width;
+    wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
+
+    return M_BMPDATA->m_width;

 }
 
 }
 

-void wxBitmap::SetDepth( int depth )
+int wxBitmap::GetDepth() const

 {
 {

-    if (!Ok()) return;
-  
-    wxFAIL_MSG( "wxBitmap::SetDepth not implemented" );
-  
-    M_BMPDATA->m_bpp = depth;
+    wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
+
+    return M_BMPDATA->m_bpp;

 }
 
 }
 

-wxMask *wxBitmap::GetMask(void) const
+wxMask *wxBitmap::GetMask() const

 {
 {

-    if (!Ok())
-    {
-        wxFAIL_MSG( "invalid bitmap" );
-        return (wxMask *) NULL;
-    }
-  
+    wxCHECK_MSG( Ok(), (wxMask *) NULL, wxT("invalid bitmap") );
+

     return M_BMPDATA->m_mask;
 }
 
 void wxBitmap::SetMask( wxMask *mask )
 {
     return M_BMPDATA->m_mask;
 }
 
 void wxBitmap::SetMask( wxMask *mask )
 {

-    if (!Ok())
-    {
-        wxFAIL_MSG( "invalid bitmap" );
-        return;
-    }
-  
-    if (M_BMPDATA->m_mask) delete M_BMPDATA->m_mask;
-  
+    wxCHECK_RET( Ok(), wxT("invalid bitmap") );
+
+    AllocExclusive();
+    delete M_BMPDATA->m_mask;

     M_BMPDATA->m_mask = mask;
 }
 
     M_BMPDATA->m_mask = mask;
 }
 

-bool wxBitmap::SaveFile( const wxString &name, int type, wxPalette *WXUNUSED(palette) )
+bool wxBitmap::CopyFromIcon(const wxIcon& icon)
+{
+    *this = icon;
+    return Ok();
+}
+
+wxBitmap wxBitmap::GetSubBitmap( const wxRect& rect) const

 {
 {

-    if (!Ok())
+    wxBitmap ret;
+
+    wxCHECK_MSG(Ok(), ret, wxT("invalid bitmap"));
+    wxCHECK_MSG(rect.x >= 0 && rect.y >= 0 &&
+                rect.x + rect.width <= M_BMPDATA->m_width &&
+                rect.y + rect.height <= M_BMPDATA->m_height,
+                ret, wxT("invalid bitmap region"));
+
+    if (HasPixbuf() || M_BMPDATA->m_bpp == 32)

     {
     {

-        wxFAIL_MSG( "invalid bitmap" );
-        return FALSE;
+        GdkPixbuf *pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB,
+                                           gdk_pixbuf_get_has_alpha(GetPixbuf()),
+                                           8, rect.width, rect.height);
+        ret.SetPixbuf(pixbuf, M_BMPDATA->m_bpp);
+        gdk_pixbuf_copy_area(GetPixbuf(),
+                             rect.x, rect.y, rect.width, rect.height,
+                             pixbuf, 0, 0);

     }
     }

-  
-    if (type == wxBITMAP_TYPE_PNG)
+    else

     {
     {

-        wxImage image = ConvertToImage();
-       if (image.Ok()) return image.SaveFile( name, type );
+        ret.Create(rect.width, rect.height, M_BMPDATA->m_bpp);
+        wxGtkObject<GdkGC> gc(gdk_gc_new( ret.GetPixmap() ));
+        gdk_draw_drawable( ret.GetPixmap(), gc, GetPixmap(), rect.x, rect.y, 0, 0, rect.width, rect.height );

     }
     }

-    
-    return FALSE;
+    // make mask, unless there is already alpha
+    if (GetMask() && !HasAlpha())
+    {
+        wxMask *mask = new wxMask;
+        mask->m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, rect.width, rect.height, 1 );
+
+        wxGtkObject<GdkGC> gc(gdk_gc_new( mask->m_bitmap ));
+        gdk_draw_drawable(mask->m_bitmap, gc, M_BMPDATA->m_mask->m_bitmap, rect.x, rect.y, 0, 0, rect.width, rect.height);
+
+        ret.SetMask( mask );
+    }
+
+    return ret;

 }
 
 }
 

-bool wxBitmap::LoadFile( const wxString &name, int type )
+bool wxBitmap::SaveFile( const wxString &name, wxBitmapType type, const wxPalette *WXUNUSED(palette) ) const
+{
+    wxCHECK_MSG( Ok(), false, wxT("invalid bitmap") );
+
+#if wxUSE_IMAGE
+    // Try to save the bitmap via wxImage handlers:
+    wxImage image = ConvertToImage();
+    return image.Ok() && image.SaveFile(name, type);
+#else // !wxUSE_IMAGE
+    wxUnusedVar(name);
+    wxUnusedVar(type);
+
+    return false;
+#endif // wxUSE_IMAGE
+}
+
+bool wxBitmap::LoadFile( const wxString &name, wxBitmapType type )

 {
     UnRef();
 {
     UnRef();

-    
-    if (!wxFileExists(name)) return FALSE;
-  
+

     if (type == wxBITMAP_TYPE_XPM)
     {
     if (type == wxBITMAP_TYPE_XPM)
     {

-        m_refData = new wxBitmapRefData();
-       

         GdkBitmap *mask = (GdkBitmap*) NULL;
         GdkBitmap *mask = (GdkBitmap*) NULL;

-        GdkWindow *parent = (GdkWindow*) &gdk_root_parent;
-  
-        M_BMPDATA->m_pixmap = gdk_pixmap_create_from_xpm( parent, &mask, NULL, name );
-    
+        SetPixmap(gdk_pixmap_create_from_xpm(wxGetRootWindow()->window, &mask, NULL, name.fn_str()));
+

         if (mask)
         {
         if (mask)
         {

-           M_BMPDATA->m_mask = new wxMask();
-           M_BMPDATA->m_mask->m_bitmap = mask;
+            M_BMPDATA->m_mask = new wxMask;
+            M_BMPDATA->m_mask->m_bitmap = mask;

         }
         }

-  
-        gdk_window_get_size( M_BMPDATA->m_pixmap, &(M_BMPDATA->m_width), &(M_BMPDATA->m_height) );
-        M_BMPDATA->m_bpp = gdk_window_get_visual( parent )->depth; 

     }
     }

-    else if (type == wxBITMAP_TYPE_PNG)
+#if wxUSE_IMAGE
+    else // try if wxImage can load it

     {
         wxImage image;
     {
         wxImage image;

-        image.LoadFile( name, type );
-        if (image.Ok()) *this = wxBitmap( image );
+        if (image.LoadFile(name, type) && image.Ok())
+            CreateFromImage(image, -1);

     }
     }

-    else if (type == wxBITMAP_TYPE_BMP)
-    {
-        wxImage image;
-        image.LoadFile( name, type );
-        if (image.Ok()) *this = wxBitmap( image );
-    }
-    else 
-        return FALSE;
-    
-    return TRUE;
+#endif // wxUSE_IMAGE
+
+    return Ok();

 }
 }

-        
-wxPalette *wxBitmap::GetPalette(void) const
+
+#if wxUSE_PALETTE
+wxPalette *wxBitmap::GetPalette() const

 {
 {

-    if (!Ok()) return (wxPalette *) NULL;
+    wxCHECK_MSG(Ok(), NULL, wxT("invalid bitmap"));
+

     return M_BMPDATA->m_palette;
 }
 
     return M_BMPDATA->m_palette;
 }
 

-GdkPixmap *wxBitmap::GetPixmap(void) const
+void wxBitmap::SetPalette(const wxPalette& WXUNUSED(palette))
+{
+    // TODO
+}
+#endif // wxUSE_PALETTE
+
+void wxBitmap::SetHeight( int height )

 {
 {

-    if (!Ok())
+    AllocExclusive();
+    M_BMPDATA->m_height = height;
+}
+
+void wxBitmap::SetWidth( int width )
+{
+    AllocExclusive();
+    M_BMPDATA->m_width = width;
+}
+
+void wxBitmap::SetDepth( int depth )
+{
+    AllocExclusive();
+    M_BMPDATA->m_bpp = depth;
+}
+
+void wxBitmap::SetPixmap( GdkPixmap *pixmap )
+{
+    if (!m_refData)
+        m_refData = new wxBitmapRefData;
+
+    // AllocExclusive should not be needed for this internal function
+    wxASSERT(m_refData->GetRefCount() == 1);
+    wxASSERT(M_BMPDATA->m_pixmap == NULL);
+    M_BMPDATA->m_pixmap = pixmap;
+    gdk_drawable_get_size(pixmap, &M_BMPDATA->m_width, &M_BMPDATA->m_height);
+    M_BMPDATA->m_bpp = gdk_drawable_get_depth(pixmap);
+    PurgeOtherRepresentations(Pixmap);
+}
+
+GdkPixmap *wxBitmap::GetPixmap() const
+{
+    wxCHECK_MSG( Ok(), (GdkPixmap *) NULL, wxT("invalid bitmap") );
+
+    // create the pixmap on the fly if we use Pixbuf representation:
+    if (M_BMPDATA->m_pixmap == NULL)

     {
     {

-        wxFAIL_MSG( "invalid bitmap" );
-        return (GdkPixmap *) NULL;
+        GdkPixmap** pmask = NULL;
+        if (gdk_pixbuf_get_has_alpha(M_BMPDATA->m_pixbuf))
+        {
+            // make new mask from alpha
+            delete M_BMPDATA->m_mask;
+            M_BMPDATA->m_mask = new wxMask;
+            pmask = &M_BMPDATA->m_mask->m_bitmap;
+        }
+        gdk_pixbuf_render_pixmap_and_mask(M_BMPDATA->m_pixbuf,
+                                          &M_BMPDATA->m_pixmap,
+                                          pmask,
+                                          0x80 /* alpha threshold */);

     }
     }

-  
+

     return M_BMPDATA->m_pixmap;
 }
     return M_BMPDATA->m_pixmap;
 }

-  
-GdkBitmap *wxBitmap::GetBitmap(void) const
+
+bool wxBitmap::HasPixmap() const

 {
 {

-    if (!Ok())
+    wxCHECK_MSG( Ok(), false, wxT("invalid bitmap") );
+
+    return M_BMPDATA->m_pixmap != NULL;
+}
+
+GdkPixbuf *wxBitmap::GetPixbuf() const
+{
+    wxCHECK_MSG( Ok(), NULL, wxT("invalid bitmap") );
+
+    if (M_BMPDATA->m_pixbuf == NULL)

     {
     {

-      wxFAIL_MSG( "invalid bitmap" );
-      return (GdkBitmap *) NULL;
+     
+        int width = GetWidth();
+        int height = GetHeight();
+
+        GdkPixbuf *pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB,
+                                           GetMask() != NULL,
+                                           8, width, height);
+        M_BMPDATA->m_pixbuf = 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;
+                    }
+                }
+
+                g_object_unref (pmask);
+            }
+        }

     }
     }

-  
-    return M_BMPDATA->m_bitmap;
+
+    return M_BMPDATA->m_pixbuf;

 }
 }

-  
-wxBitmap::wxBitmap( const wxImage &image )
+
+bool wxBitmap::HasPixbuf() const

 {
 {

-    if (wxTheBitmapList) wxTheBitmapList->AddBitmap(this);
-  
-    if (!image.Ok()) return;
+    wxCHECK_MSG( Ok(), false, wxT("invalid bitmap") );

 
 

-    m_refData = new wxBitmapRefData();
+    return M_BMPDATA->m_pixbuf != NULL;
+}

 
 

-    M_BMPDATA->m_height = image.GetHeight();
-    M_BMPDATA->m_width = image.GetWidth();
-    int width = image.GetWidth();
-    int height = image.GetHeight();
-  
-    // Create picture
-  
-    GdkImage *data_image = 
-      gdk_image_new( GDK_IMAGE_FASTEST, gdk_visual_get_system(), width, height );
-  
-    M_BMPDATA->m_pixmap = 
-      gdk_pixmap_new( (GdkWindow*)&gdk_root_parent, width, height, -1 );
-
-    // Create mask
-  
-    GdkImage *mask_image = (GdkImage*) NULL;
-  
-    if (image.HasMask())
-    {
-        unsigned char *mask_data = (unsigned char*)malloc( ((width >> 3)+8) * height );
-  
-        mask_image =  gdk_image_new_bitmap( gdk_visual_get_system(), mask_data, width, height );
-  
-        M_BMPDATA->m_mask = new wxMask();
-        M_BMPDATA->m_mask->m_bitmap = gdk_pixmap_new( (GdkWindow*)&gdk_root_parent, width, height, 1 );
-    }
-  
-    // Retrieve depth  
-  
-    GdkVisual *visual = gdk_window_get_visual( M_BMPDATA->m_pixmap );
-    if (visual == NULL) visual = gdk_window_get_visual( (GdkWindow*) &gdk_root_parent );
-    int bpp = visual->depth;
-    if ((bpp == 16) && (visual->red_mask != 0xf800)) bpp = 15;
-    if (bpp < 8) bpp = 8;
-    
-    // Render
+void wxBitmap::SetPixbuf(GdkPixbuf* pixbuf, int depth)
+{
+    if (!m_refData)
+        m_refData = new wxBitmapRefData;

 
 

-    enum byte_order { RGB, RBG, BRG, BGR, GRB, GBR };
-    byte_order b_o = RGB;
-  
-    if (bpp >= 24)
+    // AllocExclusive should not be needed for this internal function
+    wxASSERT(m_refData->GetRefCount() == 1);
+    wxASSERT(M_BMPDATA->m_pixbuf == NULL);
+    M_BMPDATA->m_pixbuf = pixbuf;
+    M_BMPDATA->m_width = gdk_pixbuf_get_width(pixbuf);
+    M_BMPDATA->m_height = gdk_pixbuf_get_height(pixbuf);
+    // if depth specified
+    if (depth != 0)
+        M_BMPDATA->m_bpp = depth;
+    else if (M_BMPDATA->m_bpp == 0)
+        // use something reasonable
+        M_BMPDATA->m_bpp = wxTheApp->GetGdkVisual()->depth;
+    PurgeOtherRepresentations(Pixbuf);
+}
+
+void wxBitmap::PurgeOtherRepresentations(wxBitmap::Representation keep)
+{
+    if (keep == Pixmap && HasPixbuf())

     {
     {

-        GdkVisual *visual = gdk_visual_get_system();
-        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 = RGB;
-        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;
+        g_object_unref (M_BMPDATA->m_pixbuf);
+        M_BMPDATA->m_pixbuf = NULL;

     }
     }

-  
-    int r_mask = image.GetMaskRed();
-    int g_mask = image.GetMaskGreen();
-    int b_mask = image.GetMaskBlue();
-  
-    unsigned char* data = image.GetData();
-  
-    int index = 0;
-    for (int y = 0; y < height; y++)
+    if (keep == Pixbuf && HasPixmap())

     {
     {

-        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())
-           {
-               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)
-           {
-               case 8:
-               {
-                   GdkColormap *cmap = gtk_widget_get_default_colormap();
-                    GdkColor *colors = cmap->colors;
-                    int max = 3 * (65536);
-                    int index = -1;
-
-                    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) { index = i; max = sum; }
-                    }
-           
-                   gdk_image_put_pixel( data_image, x, y, index );
-           
-                   break;
-               }
-               case 15:
-               {
-                   guint32 pixel = ((r & 0xf8) << 7) | ((g & 0xf8) << 2) | ((b & 0xf8) >> 3);
-                   gdk_image_put_pixel( data_image, x, y, pixel );
-                   break;
-               }
-               case 16:
-               {
-                   guint32 pixel = ((r & 0xf8) << 8) | ((g & 0xfc) << 3) | ((b & 0xf8) >> 3);
-                   gdk_image_put_pixel( data_image, x, y, pixel );
-                   break;
-               }
-               case 32:
-               case 24:
-               {
-                   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 );
-               }
-               default: break;
-           }
-        } // for
-    }  // for
-        
-    // Blit picture
-  
-    GdkGC *data_gc = gdk_gc_new( M_BMPDATA->m_pixmap );
-  
-    gdk_draw_image( M_BMPDATA->m_pixmap, data_gc, data_image, 0, 0, 0, 0, width, height );
-  
-    gdk_image_destroy( data_image );
-    gdk_gc_unref( data_gc );
-  
-    // Blit mask
-  
-    if (image.HasMask())
+        g_object_unref (M_BMPDATA->m_pixmap);
+        M_BMPDATA->m_pixmap = NULL;
+    }
+}
+
+void *wxBitmap::GetRawData(wxPixelDataBase& data, int bpp)
+{
+    void* bits = NULL;
+    GdkPixbuf *pixbuf = GetPixbuf();
+    const bool hasAlpha = HasAlpha();
+    
+    // allow access if bpp is valid and matches existence of alpha
+    if ( pixbuf && ((bpp == 24 && !hasAlpha) || (bpp == 32 && hasAlpha)) )

     {
     {

-        GdkGC *mask_gc = gdk_gc_new( M_BMPDATA->m_mask->m_bitmap );
-  
-        gdk_draw_image( M_BMPDATA->m_mask->m_bitmap, mask_gc, mask_image, 0, 0, 0, 0, width, height );
-  
-        gdk_image_destroy( mask_image );
-        gdk_gc_unref( mask_gc );
+        data.m_height = gdk_pixbuf_get_height( pixbuf );
+        data.m_width = gdk_pixbuf_get_width( pixbuf );
+        data.m_stride = gdk_pixbuf_get_rowstride( pixbuf );
+        bits = gdk_pixbuf_get_pixels(pixbuf);

     }
     }

+    return bits;

 }
 
 }
 

-wxImage wxBitmap::ConvertToImage() const
+void wxBitmap::UngetRawData(wxPixelDataBase& WXUNUSED(data))
+{
+}
+
+bool wxBitmap::HasAlpha() const
+{
+    return m_refData != NULL && M_BMPDATA->m_pixbuf != NULL &&
+        gdk_pixbuf_get_has_alpha(M_BMPDATA->m_pixbuf);
+}
+
+wxGDIRefData* wxBitmap::CreateGDIRefData() const

 {
 {

-    wxImage image;
+    return new wxBitmapRefData;
+}

 
 

-    if (!Ok())
+wxGDIRefData* wxBitmap::CloneGDIRefData(const wxGDIRefData* data) const
+{
+    const wxBitmapRefData* oldRef = static_cast<const wxBitmapRefData*>(data);
+    wxBitmapRefData* newRef = new wxBitmapRefData;
+    newRef->m_width = oldRef->m_width;
+    newRef->m_height = oldRef->m_height;
+    newRef->m_bpp = oldRef->m_bpp;
+    if (oldRef->m_pixmap != NULL)

     {
     {

-        wxFAIL_MSG( "invalid bitmap" );
-        return image;
+        newRef->m_pixmap = gdk_pixmap_new(
+            oldRef->m_pixmap, oldRef->m_width, oldRef->m_height,
+            // use pixmap depth, m_bpp may not match
+            gdk_drawable_get_depth(oldRef->m_pixmap));
+        wxGtkObject<GdkGC> gc(gdk_gc_new(newRef->m_pixmap));
+        gdk_draw_drawable(
+            newRef->m_pixmap, gc, oldRef->m_pixmap, 0, 0, 0, 0, -1, -1);

     }
     }

-  
-    GdkImage *gdk_image = gdk_image_get( M_BMPDATA->m_pixmap, 0, 0, M_BMPDATA->m_width, M_BMPDATA->m_height );
-  
-    if (!gdk_image) return image;
-  
-    image.Create( M_BMPDATA->m_width, M_BMPDATA->m_height );
-    char unsigned *data = image.GetData();
-
-    GdkVisual *visual = gdk_window_get_visual( M_BMPDATA->m_pixmap );
-    if (visual == NULL) visual = gdk_window_get_visual( (GdkWindow*) &gdk_root_parent );
-    int bpp = visual->depth;
-    if ((bpp == 16) && (visual->red_mask != 0xf800)) bpp = 15;
-
-    GdkColormap *cmap = gtk_widget_get_default_colormap();
-  
-    long pos = 0;
-    for (int j = 0; j < M_BMPDATA->m_height; j++)
+    if (oldRef->m_pixbuf != NULL)

     {
     {

-        for (int i = 0; i < M_BMPDATA->m_width; i++)
-        {
-            int pixel = gdk_image_get_pixel( gdk_image, i, j );
-            if (bpp <= 8)
-            {
-                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 (bpp == 15)
-            {
-                data[pos] = (pixel >> 7) & 0xf8;
-                data[pos+1] = (pixel >> 2) & 0xf8;
-                data[pos+2] = (pixel << 3) & 0xf8;
-            } else if (bpp == 16)
-            {
-                data[pos] = (pixel >> 8) & 0xf8;
-                data[pos+1] = (pixel >> 3) & 0xfc;
-                data[pos+2] = (pixel << 3) & 0xf8;
-            } else
-            {
-                data[pos] = (pixel >> 16) & 0xff;
-                data[pos+1] = (pixel >> 8) & 0xff;
-                data[pos+2] = pixel & 0xff;
-            }
-      
-            pos += 3;
-        }
+        newRef->m_pixbuf = gdk_pixbuf_copy(oldRef->m_pixbuf);

     }
     }

-  
-    gdk_image_destroy( gdk_image );
-  
-    return image;
-}
-
+    if (oldRef->m_mask != NULL)
+    {
+        newRef->m_mask = new wxMask;
+        newRef->m_mask->m_bitmap = gdk_pixmap_new(
+            oldRef->m_mask->m_bitmap, oldRef->m_width, oldRef->m_height, 1);
+        wxGtkObject<GdkGC> gc(gdk_gc_new(newRef->m_mask->m_bitmap));
+        gdk_draw_drawable(newRef->m_mask->m_bitmap,
+            gc, oldRef->m_mask->m_bitmap, 0, 0, 0, 0, -1, -1);
+    }
+#if wxUSE_PALETTE
+    // implement this if SetPalette is ever implemented
+    wxASSERT(oldRef->m_palette == NULL);
+#endif

 
 

+    return newRef;
+}

 
 

+/* static */ void wxBitmap::InitStandardHandlers()
+{
+    // TODO: Insert handler based on GdkPixbufs handler later
+}