Fix minor typo in wxDV_VERT_RULES documentation.

[wxWidgets.git] / src / gtk / bitmap.cpp
diff --git a/src/gtk/bitmap.cpp b/src/gtk/bitmap.cpp

index 036f237c89fb7fa44c09690af42dde09fd539d22..1d8a6b5767de404c7d61089e46ee8ba4970d1816 100644 (file)
--- a/src/gtk/bitmap.cpp
+++ b/src/gtk/bitmap.cpp
@@ -1,5 +1,5 @@
  /////////////////////////////////////////////////////////////////////////////
  /////////////////////////////////////////////////////////////////////////////
-// Name:        bitmap.cpp
+// Name:        src/gtk/bitmap.cpp
  // Purpose:
  // Author:      Robert Roebling
  // RCS-ID:      $Id$
  // Purpose:
  // Author:      Robert Roebling
  // RCS-ID:      $Id$
@@ -7,1495 +7,1497 @@
  // Licence:     wxWindows licence
  /////////////////////////////////////////////////////////////////////////////
  
  // Licence:     wxWindows licence
  /////////////////////////////////////////////////////////////////////////////
  
-#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
-#pragma implementation "bitmap.h"
-#endif
-
  // For compilers that support precompilation, includes "wx.h".
  #include "wx/wxprec.h"
  
  // For compilers that support precompilation, includes "wx.h".
  #include "wx/wxprec.h"
  
-#include "wx/defs.h"
-
-#include "wx/palette.h"
  #include "wx/bitmap.h"
  #include "wx/bitmap.h"
-#include "wx/icon.h"
-#include "wx/filefn.h"
-#include "wx/image.h"
-#include "wx/dcmemory.h"
-#include "wx/app.h"
-
-#ifdef __WXGTK20__
-    // need this to get gdk_image_new_bitmap()
-    #define GDK_ENABLE_BROKEN
+
+#ifndef WX_PRECOMP
+    #include "wx/icon.h"
+    #include "wx/image.h"
+    #include "wx/colour.h"
  #endif
  
  #endif
  
-#include <gdk/gdk.h>
-#include <gtk/gtk.h>
-#include <gdk/gdkx.h>
-
-#ifdef __WXGTK20__
-    #include <gdk/gdkimage.h>
-#else // GTK+ 1.2
-    #include <gdk/gdkrgb.h>
-#endif // GTK+ 2.0/1.2
-
-#include <math.h>
-
-extern void gdk_wx_draw_bitmap     (GdkDrawable  *drawable,
-                          GdkGC               *gc,
-                          GdkDrawable  *src,
-                          gint                xsrc,
-                          gint                ysrc,
-                          gint                xdest,
-                          gint                ydest,
-                          gint                width,
-                          gint                height);
+#include "wx/rawbmp.h"
  
  
-//-----------------------------------------------------------------------------
-// data
-//-----------------------------------------------------------------------------
+#include "wx/gtk/private/object.h"
+#include "wx/gtk/private.h"
+
+#include <gtk/gtk.h>
  
  extern GtkWidget *wxGetRootWindow();
  
  
  extern GtkWidget *wxGetRootWindow();
  
+#ifndef __WXGTK3__
+static void PixmapToPixbuf(GdkPixmap* pixmap, GdkPixbuf* pixbuf, int w, int h)
+{
+    gdk_pixbuf_get_from_drawable(pixbuf, pixmap, NULL, 0, 0, 0, 0, w, h);
+    if (gdk_drawable_get_depth(pixmap) == 1)
+    {
+        // invert to match XBM convention
+        guchar* p = gdk_pixbuf_get_pixels(pixbuf);
+        const int inc = 3 + int(gdk_pixbuf_get_has_alpha(pixbuf) != 0);
+        const int rowpad = gdk_pixbuf_get_rowstride(pixbuf) - w * inc;
+        for (int y = h; y; y--, p += rowpad)
+            for (int x = w; x; x--, p += inc)
+            {
+                // pixels are either (0,0,0) or (0xff,0xff,0xff)
+                p[0] = ~p[0];
+                p[1] = ~p[1];
+                p[2] = ~p[2];
+            }
+    }
+}
+
+static void MaskToAlpha(GdkPixmap* mask, GdkPixbuf* pixbuf, int w, int h)
+{
+    GdkPixbuf* mask_pixbuf = gdk_pixbuf_get_from_drawable(
+        NULL, mask, NULL, 0, 0, 0, 0, w, h);
+    guchar* p = gdk_pixbuf_get_pixels(pixbuf) + 3;
+    const guchar* mask_data = gdk_pixbuf_get_pixels(mask_pixbuf);
+    const int rowpad = gdk_pixbuf_get_rowstride(pixbuf) - w * 4;
+    const int mask_rowpad = gdk_pixbuf_get_rowstride(mask_pixbuf) - w * 3;
+    for (int y = h; y; y--, p += rowpad, mask_data += mask_rowpad)
+    {
+        for (int x = w; x; x--, p += 4, mask_data += 3)
+        {
+            *p = 255;
+            // no need to test all 3 components,
+            //   pixels are either (0,0,0) or (0xff,0xff,0xff)
+            if (mask_data[0] == 0)
+                *p = 0;
+        }
+    }
+    g_object_unref(mask_pixbuf);
+}
+#endif
+
  //-----------------------------------------------------------------------------
  // wxMask
  //-----------------------------------------------------------------------------
  
  //-----------------------------------------------------------------------------
  // wxMask
  //-----------------------------------------------------------------------------
  
-IMPLEMENT_DYNAMIC_CLASS(wxMask,wxObject)
+IMPLEMENT_DYNAMIC_CLASS(wxMask, wxMaskBase)
  
  wxMask::wxMask()
  {
  
  wxMask::wxMask()
  {
-    m_bitmap = (GdkBitmap *) NULL;
+    m_bitmap = NULL;
+}
+
+wxMask::wxMask(const wxMask& mask)
+{
+#ifdef __WXGTK3__
+    m_bitmap = NULL;
+    if (mask.m_bitmap)
+    {
+        const int w = cairo_image_surface_get_width(mask.m_bitmap);
+        const int h = cairo_image_surface_get_height(mask.m_bitmap);
+        m_bitmap = cairo_image_surface_create(CAIRO_FORMAT_A8, w, h);
+        const guchar* src = cairo_image_surface_get_data(mask.m_bitmap);
+        guchar* dst = cairo_image_surface_get_data(m_bitmap);
+        const int stride = cairo_image_surface_get_stride(m_bitmap);
+        wxASSERT(stride == cairo_image_surface_get_stride(mask.m_bitmap));
+        memcpy(dst, src, stride * h);
+        cairo_surface_mark_dirty(m_bitmap);
+    }
+#else
+    if ( !mask.m_bitmap )
+    {
+        m_bitmap = NULL;
+        return;
+    }
+
+    // create a copy of an existing mask
+    gint w, h;
+    gdk_drawable_get_size(mask.m_bitmap, &w, &h);
+    m_bitmap = gdk_pixmap_new(mask.m_bitmap, w, h, 1);
+
+    wxGtkObject<GdkGC> gc(gdk_gc_new(m_bitmap));
+    gdk_draw_drawable(m_bitmap, gc, mask.m_bitmap, 0, 0, 0, 0, -1, -1);
+#endif
  }
  
  wxMask::wxMask( const wxBitmap& bitmap, const wxColour& colour )
  {
  }
  
  wxMask::wxMask( const wxBitmap& bitmap, const wxColour& colour )
  {
-    m_bitmap = (GdkBitmap *) NULL;
-    Create( bitmap, colour );
+    m_bitmap = NULL;
+    InitFromColour(bitmap, colour);
  }
  
  }
  
+#if wxUSE_PALETTE
  wxMask::wxMask( const wxBitmap& bitmap, int paletteIndex )
  {
  wxMask::wxMask( const wxBitmap& bitmap, int paletteIndex )
  {
-    m_bitmap = (GdkBitmap *) NULL;
+    m_bitmap = NULL;
      Create( bitmap, paletteIndex );
  }
      Create( bitmap, paletteIndex );
  }
+#endif // wxUSE_PALETTE
  
  wxMask::wxMask( const wxBitmap& bitmap )
  {
  
  wxMask::wxMask( const wxBitmap& bitmap )
  {
-    m_bitmap = (GdkBitmap *) NULL;
-    Create( bitmap );
+    m_bitmap = NULL;
+    InitFromMonoBitmap(bitmap);
  }
  
  }
  
-wxMask::~wxMask()
+#ifdef __WXGTK3__
+wxMask::wxMask(cairo_surface_t* bitmap)
+#else
+wxMask::wxMask(GdkPixmap* bitmap)
+#endif
  {
  {
-    if (m_bitmap)
-        gdk_bitmap_unref( m_bitmap );
+    m_bitmap = bitmap;
  }
  
  }
  
-bool wxMask::Create( const wxBitmap& bitmap,
-                     const wxColour& colour )
+wxMask::~wxMask()
  {
      if (m_bitmap)
      {
  {
      if (m_bitmap)
      {
-        gdk_bitmap_unref( m_bitmap );
-        m_bitmap = (GdkBitmap*) NULL;
+#ifdef __WXGTK3__
+        cairo_surface_destroy(m_bitmap);
+#else
+        g_object_unref (m_bitmap);
+#endif
      }
      }
+}
  
  
-    wxImage image = bitmap.ConvertToImage();
-    if (!image.Ok()) return FALSE;
-
-    m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, image.GetWidth(), image.GetHeight(), 1 );
-    GdkGC *gc = gdk_gc_new( m_bitmap );
-
-    GdkColor color;
-    color.red = 65000;
-    color.green = 65000;
-    color.blue = 65000;
-    color.pixel = 1;
-    gdk_gc_set_foreground( gc, &color );
-    gdk_gc_set_fill( gc, GDK_SOLID );
-    gdk_draw_rectangle( m_bitmap, gc, TRUE, 0, 0, image.GetWidth(), image.GetHeight() );
-
-    unsigned char *data = image.GetData();
-    int index = 0;
-
-    unsigned char red = colour.Red();
-    unsigned char green = colour.Green();
-    unsigned char blue = colour.Blue();
-
-    GdkVisual *visual = wxTheApp->GetGdkVisual();
-
-    int bpp = visual->depth;
-    if ((bpp == 16) && (visual->red_mask != 0xf800))
-        bpp = 15;
-    if (bpp == 15)
+void wxMask::FreeData()
+{
+    if (m_bitmap)
      {
      {
-        red = red & 0xf8;
-        green = green & 0xf8;
-        blue = blue & 0xf8;
+#ifdef __WXGTK3__
+        cairo_surface_destroy(m_bitmap);
+#else
+        g_object_unref (m_bitmap);
+#endif
+        m_bitmap = NULL;
      }
      }
-    else if (bpp == 16)
+}
+
+bool wxMask::InitFromColour(const wxBitmap& bitmap, const wxColour& colour)
+{
+    const int w = bitmap.GetWidth();
+    const int h = bitmap.GetHeight();
+
+#ifdef __WXGTK3__
+    m_bitmap = cairo_image_surface_create(CAIRO_FORMAT_A8, w, h);
+    GdkPixbuf* pixbuf = bitmap.GetPixbufNoMask();
+    const guchar* src = gdk_pixbuf_get_pixels(pixbuf);
+    guchar* dst = cairo_image_surface_get_data(m_bitmap);
+    const int stride_src = gdk_pixbuf_get_rowstride(pixbuf);
+    const int stride_dst = cairo_image_surface_get_stride(m_bitmap);
+    const int src_inc = gdk_pixbuf_get_n_channels(pixbuf);
+    const guchar r = colour.Red();
+    const guchar g = colour.Green();
+    const guchar b = colour.Blue();
+    for (int j = 0; j < h; j++, src += stride_src, dst += stride_dst)
      {
      {
-        red = red & 0xf8;
-        green = green & 0xfc;
-        blue = blue & 0xf8;
+        const guchar* s = src;
+        for (int i = 0; i < w; i++, s += src_inc)
+        {
+            dst[i] = 0xff;
+            if (s[0] == r && s[1] == g && s[2] == b)
+                dst[i] = 0;
+        }
      }
      }
-    else if (bpp == 12)
+    cairo_surface_mark_dirty(m_bitmap);
+#else
+    // 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())
      {
      {
-        red = red & 0xf0;
-        green = green & 0xf0;
-        blue = blue & 0xf0;
+        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;
+        }
      }
      }
-
-    color.red = 0;
-    color.green = 0;
-    color.blue = 0;
-    color.pixel = 0;
-    gdk_gc_set_foreground( gc, &color );
-
-    for (int j = 0; j < image.GetHeight(); j++)
+    else
      {
      {
-        int start_x = -1;
-        int i;
-        for (i = 0; i < image.GetWidth(); i++)
+        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
          {
          {
-            if ((data[index] == red) &&
-                (data[index+1] == green) &&
-                (data[index+2] == blue))
-            {
-                if (start_x == -1)
-                start_x = i;
-            }
-            else
-            {
-                if (start_x != -1)
-                {
-                    gdk_draw_line( m_bitmap, gc, start_x, j, i-1, j );
-                    start_x = -1;
-                }
-            }
-            index += 3;
+            wxColor c(colour);
+            c.CalcPixel(colormap);
+            mask_pixel = c.GetPixel();
          }
          }
-        if (start_x != -1)
-            gdk_draw_line( m_bitmap, gc, start_x, j, i, j );
+        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);
      }
      }
-
-    gdk_gc_unref( gc );
-
-    return TRUE;
+    m_bitmap = gdk_bitmap_create_from_data(wxGetRootWindow()->window, (char*)out, w, h);
+    delete[] out;
+#endif
+    return true;
  }
  
  }
  
-bool wxMask::Create( const wxBitmap& bitmap, int paletteIndex )
+bool wxMask::InitFromMonoBitmap(const wxBitmap& bitmap)
  {
  {
-    unsigned char r,g,b;
-    wxPalette *pal = bitmap.GetPalette();
+    if (!bitmap.IsOk()) return false;
+
+    wxCHECK_MSG( bitmap.GetDepth() == 1, false, wxT("Cannot create mask from colour bitmap") );
+
+#ifdef __WXGTK3__
+    InitFromColour(bitmap, *wxBLACK);
+#else
+    m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, bitmap.GetWidth(), bitmap.GetHeight(), 1 );
  
  
-    wxCHECK_MSG( pal, FALSE, wxT("Cannot create mask from bitmap without palette") );
+    if (!m_bitmap) return false;
  
  
-    pal->GetRGB(paletteIndex, &r, &g, &b);
+    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());
+#endif
  
  
-    return Create(bitmap, wxColour(r, g, b));
+    return true;
  }
  
  }
  
-bool wxMask::Create( const wxBitmap& bitmap )
+wxBitmap wxMask::GetBitmap() const
  {
  {
+    wxBitmap bitmap;
      if (m_bitmap)
      {
      if (m_bitmap)
      {
-        gdk_bitmap_unref( m_bitmap );
-        m_bitmap = (GdkBitmap*) NULL;
+#ifdef __WXGTK3__
+        cairo_surface_t* mask = m_bitmap;
+        const int w = cairo_image_surface_get_width(mask);
+        const int h = cairo_image_surface_get_height(mask);
+        GdkPixbuf* pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, false, 8, w, h);
+        const guchar* src = cairo_image_surface_get_data(mask);
+        guchar* dst = gdk_pixbuf_get_pixels(pixbuf);
+        const int stride_src = cairo_image_surface_get_stride(mask);
+        const int stride_dst = gdk_pixbuf_get_rowstride(pixbuf);
+        for (int j = 0; j < h; j++, src += stride_src, dst += stride_dst)
+        {
+            guchar* d = dst;
+            for (int i = 0; i < w; i++, d += 3)
+            {
+                d[0] = src[i];
+                d[1] = src[i];
+                d[2] = src[i];
+            }
+        }
+        bitmap = wxBitmap(pixbuf, 1);
+#else
+        GdkPixmap* mask = m_bitmap;
+        int w, h;
+        gdk_drawable_get_size(mask, &w, &h);
+        GdkPixmap* pixmap = gdk_pixmap_new(mask, w, h, -1);
+        GdkGC* gc = gdk_gc_new(pixmap);
+        gdk_gc_set_function(gc, GDK_COPY_INVERT);
+        gdk_draw_drawable(pixmap, gc, mask, 0, 0, 0, 0, w, h);
+        g_object_unref(gc);
+        bitmap = wxBitmap(pixmap);
+#endif
      }
      }
-
-    if (!bitmap.Ok()) return FALSE;
-
-    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;
-
-    GdkGC *gc = gdk_gc_new( m_bitmap );
-
-    gdk_wx_draw_bitmap( m_bitmap, gc, bitmap.GetBitmap(), 0, 0, 0, 0, bitmap.GetWidth(), bitmap.GetHeight() );
-
-    gdk_gc_unref( gc );
-
-    return TRUE;
+    return bitmap;
  }
  
  }
  
-GdkBitmap *wxMask::GetBitmap() const
+#ifdef __WXGTK3__
+wxMask::operator cairo_surface_t*() const
+#else
+wxMask::operator GdkPixmap*() const
+#endif
  {
      return m_bitmap;
  }
  
  //-----------------------------------------------------------------------------
  {
      return m_bitmap;
  }
  
  //-----------------------------------------------------------------------------
-// wxBitmap
+// wxBitmapRefData
  //-----------------------------------------------------------------------------
  
  //-----------------------------------------------------------------------------
  
-class wxBitmapRefData: public wxObjectRefData
+class wxBitmapRefData: public wxGDIRefData
  {
  public:
  {
  public:
-    wxBitmapRefData();
-    ~wxBitmapRefData();
+    wxBitmapRefData(int width, int height, int depth);
+    virtual ~wxBitmapRefData();
+
+    virtual bool IsOk() const;
  
  
+#ifdef __WXGTK3__
+    GdkPixbuf* m_pixbufMask;
+    GdkPixbuf* m_pixbufNoMask;
+    cairo_surface_t* m_surface;
+#else
      GdkPixmap      *m_pixmap;
      GdkPixmap      *m_pixmap;
-    GdkBitmap      *m_bitmap;
-#ifdef __WXGTK20__
      GdkPixbuf      *m_pixbuf;
  #endif
      wxMask         *m_mask;
      int             m_width;
      int             m_height;
      int             m_bpp;
      GdkPixbuf      *m_pixbuf;
  #endif
      wxMask         *m_mask;
      int             m_width;
      int             m_height;
      int             m_bpp;
-    wxPalette      *m_palette;
+#ifndef __WXGTK3__
+    bool m_alphaRequested;
+#endif
+
+    // We don't provide a copy ctor as copying m_pixmap and m_pixbuf properly
+    // is expensive and we don't want to do it implicitly (and possibly
+    // accidentally). wxBitmap::CloneGDIRefData() which does need to do it does
+    // it explicitly itself.
+    wxDECLARE_NO_COPY_CLASS(wxBitmapRefData);
  };
  
  };
  
-wxBitmapRefData::wxBitmapRefData()
+wxBitmapRefData::wxBitmapRefData(int width, int height, int depth)
  {
  {
-    m_pixmap = (GdkPixmap *) NULL;
-    m_bitmap = (GdkBitmap *) NULL;
-#ifdef __WXGTK20__
-    m_pixbuf = (GdkPixbuf *) NULL;
+#ifdef __WXGTK3__
+    m_pixbufMask = NULL;
+    m_pixbufNoMask = NULL;
+    m_surface = NULL;
+#else
+    m_pixmap = NULL;
+    m_pixbuf = NULL;
+#endif
+    m_mask = NULL;
+    m_width = width;
+    m_height = height;
+    m_bpp = depth;
+#ifdef __WXGTK3__
+    if (m_bpp != 1 && m_bpp != 32)
+        m_bpp = 24;
+#else
+    if (m_bpp < 0)
+        m_bpp = gdk_drawable_get_depth(wxGetRootWindow()->window);
+    m_alphaRequested = depth == 32;
  #endif
  #endif
-    m_mask = (wxMask *) NULL;
-    m_width = 0;
-    m_height = 0;
-    m_bpp = 0;
-    m_palette = (wxPalette *) NULL;
  }
  
  wxBitmapRefData::~wxBitmapRefData()
  {
  }
  
  wxBitmapRefData::~wxBitmapRefData()
  {
+#ifdef __WXGTK3__
+    if (m_pixbufMask)
+        g_object_unref(m_pixbufMask);
+    if (m_pixbufNoMask)
+        g_object_unref(m_pixbufNoMask);
+    if (m_surface)
+        cairo_surface_destroy(m_surface);
+#else
      if (m_pixmap)
      if (m_pixmap)
-        gdk_pixmap_unref( m_pixmap );
-    if (m_bitmap)
-        gdk_bitmap_unref( m_bitmap );
-#ifdef __WXGTK20__
+        g_object_unref (m_pixmap);
      if (m_pixbuf)
      if (m_pixbuf)
-        gdk_pixbuf_unref( m_pixbuf );
+        g_object_unref (m_pixbuf);
  #endif
      delete m_mask;
  #endif
      delete m_mask;
-    delete m_palette;
+}
+
+bool wxBitmapRefData::IsOk() const
+{
+    return m_bpp != 0;
  }
  
  }
  
+//-----------------------------------------------------------------------------
+// wxBitmap
  //-----------------------------------------------------------------------------
  
  //-----------------------------------------------------------------------------
  
-#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()
+wxBitmap::wxBitmap(const wxString &filename, wxBitmapType type)
  {
  {
+    LoadFile(filename, type);
  }
  
  }
  
-wxBitmap::wxBitmap( int width, int height, int depth )
+wxBitmap::wxBitmap(const char bits[], int width, int height, int depth)
  {
  {
-    Create( width, height, depth );
+    wxASSERT(depth == 1);
+    if (width > 0 && height > 0 && depth == 1)
+    {
+        m_refData = new wxBitmapRefData(width, height, 1);
+#ifdef __WXGTK3__
+        GdkPixbuf* pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, false, 8, width, height);
+        M_BMPDATA->m_pixbufNoMask = pixbuf;
+        const char* src = bits;
+        guchar* dst = gdk_pixbuf_get_pixels(pixbuf);
+        const int stride_src = (width + 7) / 8;
+        const int rowinc_dst = gdk_pixbuf_get_rowstride(pixbuf) - 3 * width;
+        for (int j = 0; j < width; j++, src += stride_src, dst += rowinc_dst)
+        {
+            for (int i = 0; i < height; i++)
+            {
+                guchar c = 0xff;
+                if (src[i >> 3] & (1 << (i & 7)))
+                    c = 0;
+                *dst++ = c;
+                *dst++ = c;
+                *dst++ = c;
+            }
+        }
+#else
+        M_BMPDATA->m_pixmap = gdk_bitmap_create_from_data(
+            wxGetRootWindow()->window, bits, width, height);
+#endif
+    }
  }
  
  }
  
-bool wxBitmap::Create( int width, int height, int depth )
+wxBitmap::wxBitmap(const char* const* bits)
  {
  {
-    UnRef();
+    wxCHECK2_MSG(bits != NULL, return, wxT("invalid bitmap data"));
  
  
-    if ( width <= 0 || height <= 0 )
+#if wxUSE_IMAGE
+    *this = wxBitmap(wxImage(bits));
+#elif defined __WXGTK3__
+    GdkPixbuf* pixbuf = gdk_pixbuf_new_from_xpm_data(const_cast<const char**>(bits));
+    if (pixbuf)
      {
      {
-        return false;
+        m_refData = new wxBitmapRefData(
+            gdk_pixbuf_get_width(pixbuf), gdk_pixbuf_get_height(pixbuf),
+            gdk_pixbuf_get_n_channels(pixbuf) * 8);
+        M_BMPDATA->m_pixbufNoMask = pixbuf;
+        wxASSERT(M_BMPDATA->m_bpp == 32 || !gdk_pixbuf_get_has_alpha(M_BMPDATA->m_pixbufNoMask));
      }
      }
-
-    GdkVisual *visual = wxTheApp->GetGdkVisual();
-
-    if (depth == -1)
-        depth = visual->depth;
-
-    wxCHECK_MSG( (depth == visual->depth) || (depth == 1), FALSE,
-                    wxT("invalid bitmap depth") )
-
-    m_refData = new wxBitmapRefData();
-    M_BMPDATA->m_mask = (wxMask *) NULL;
-    M_BMPDATA->m_width = width;
-    M_BMPDATA->m_height = height;
-    if (depth == 1)
+#else
+    GdkBitmap* mask = NULL;
+    GdkPixmap* pixmap = gdk_pixmap_create_from_xpm_d(wxGetRootWindow()->window, &mask, NULL, const_cast<char**>(bits));
+    if (pixmap)
      {
      {
-        M_BMPDATA->m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, width, height, 1 );
-        M_BMPDATA->m_bpp = 1;
+        int width, height;
+        gdk_drawable_get_size(pixmap, &width, &height);
+        m_refData = new wxBitmapRefData(width, height, -1);
+        M_BMPDATA->m_pixmap = pixmap;
+        if (mask)
+        {
+            M_BMPDATA->m_mask = new wxMask(mask);
+        }
      }
      }
-    else
+#endif
+}
+
+wxBitmap::wxBitmap(GdkPixbuf* pixbuf, int depth)
+{
+    if (pixbuf)
      {
      {
-        M_BMPDATA->m_pixmap = gdk_pixmap_new( wxGetRootWindow()->window, width, height, depth );
-        M_BMPDATA->m_bpp = visual->depth;
+        if (depth != 1)
+            depth = gdk_pixbuf_get_n_channels(pixbuf) * 8;
+        wxBitmapRefData* bmpData = new wxBitmapRefData(
+            gdk_pixbuf_get_width(pixbuf), gdk_pixbuf_get_height(pixbuf),
+            depth);
+        m_refData = bmpData;
+#ifdef __WXGTK3__
+        bmpData->m_pixbufNoMask = pixbuf;
+#else
+        bmpData->m_pixbuf = pixbuf;
+#endif
      }
      }
-
-    return Ok();
  }
  
  }
  
-bool wxBitmap::CreateFromXpm( const char **bits )
+#ifndef __WXGTK3__
+wxBitmap::wxBitmap(GdkPixmap* pixmap)
  {
  {
-    UnRef();
-
-    wxCHECK_MSG( bits != NULL, FALSE, wxT("invalid bitmap data") )
-
-    GdkVisual *visual = wxTheApp->GetGdkVisual();
-
-    m_refData = new wxBitmapRefData();
-
-    GdkBitmap *mask = (GdkBitmap*) NULL;
-
-    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") );
-
-    if (mask)
+    if (pixmap)
      {
      {
-        M_BMPDATA->m_mask = new wxMask();
-        M_BMPDATA->m_mask->m_bitmap = mask;
+        int w, h;
+        gdk_drawable_get_size(pixmap, &w, &h);
+        wxBitmapRefData* bmpData =
+            new wxBitmapRefData(w, h, gdk_drawable_get_depth(pixmap));
+        m_refData = bmpData;
+        bmpData->m_pixmap = pixmap;
      }
      }
+}
+#endif
  
  
-    gdk_window_get_size( M_BMPDATA->m_pixmap, &(M_BMPDATA->m_width), &(M_BMPDATA->m_height) );
-
-    M_BMPDATA->m_bpp = visual->depth;  // Can we get a different depth from create_from_xpm_d() ?
+wxBitmap::~wxBitmap()
+{
+}
  
  
-    return TRUE;
+bool wxBitmap::Create( int width, int height, int depth )
+{
+    UnRef();
+    wxCHECK_MSG(width >= 0 && height >= 0, false, "invalid bitmap size");
+    m_refData = new wxBitmapRefData(width, height, depth);
+    return true;
  }
  
  }
  
-wxBitmap wxBitmap::Rescale( int clipx, int clipy, int clipwidth, int clipheight, int newx, int newy )
+#ifdef __WXGTK3__
+static void CopyImageData(
+    guchar* dst, int dstChannels, int dstStride,
+    const guchar* src, int srcChannels, int srcStride,
+    int w, int h)
  {
  {
-    wxCHECK_MSG( Ok(), wxNullBitmap, wxT("invalid bitmap") );
-
-    if (newy==M_BMPDATA->m_width && newy==M_BMPDATA->m_height)
-        return *this;
-    
-    int width = wxMax(newx, 1);
-    int height = wxMax(newy, 1);
-    width = wxMin(width, clipwidth);
-    height = wxMin(height, clipheight);
-        
-    wxBitmap bmp;
-
-#ifdef __WXGTK20__
-    if (HasPixbuf())
+    if (dstChannels == srcChannels)
      {
      {
-        bmp.SetWidth(width);
-        bmp.SetHeight(height);
-        bmp.SetDepth(GetDepth());
-        bmp.SetPixbuf(gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE/*has_alpha*/,
-                                     8, width, height));
-        gdk_pixbuf_scale(M_BMPDATA->m_pixbuf, bmp.GetPixbuf(),
-                         0, 0, width, height,
-                         clipx, clipy, 
-                         (double)newx/GetWidth(), (double)newy/GetHeight(),
-                         GDK_INTERP_BILINEAR);
-    }
-    else
-#endif // __WXGTK20__
-    {
-        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() );
+        if (dstStride == srcStride)
+            memcpy(dst, src, size_t(dstStride) * h);
          else
          else
-            wxFAIL_MSG( wxT("Ill-formed bitmap") );
-
-        wxCHECK_MSG( img, wxNullBitmap, wxT("couldn't create image") );
-
-        int bpp = -1;
-
-        
-        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 );
+            const int stride = dstStride < srcStride ? dstStride : srcStride;
+            for (int j = 0; j < h; j++, src += srcStride, dst += dstStride)
+                memcpy(dst, src, stride);
          }
          }
-
-        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++)
+    }
+    else
+    {
+        for (int j = 0; j < h; j++, src += srcStride, dst += dstStride)
          {
          {
-            char outbyte = 0;
-            int old_x = -1;
-            guint32 old_pixval = 0;
-
-            for (int w = 0; w < width; w++)
+            guchar* d = dst;
+            const guchar* s = src;
+            if (dstChannels == 4)
              {
              {
-                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)
+                for (int i = 0; i < w; i++, d += 4, s += 3)
                  {
                  {
-                    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);
+                    d[0] = s[0];
+                    d[1] = s[1];
+                    d[2] = s[2];
+                    d[3] = 0xff;
                  }
              }
                  }
              }
-        
-            // 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() );
-
-            for (int h = 0; h < height; h++)
+            else
              {
              {
-                char outbyte = 0;
-                int old_x = -1;
-                guint32 old_pixval = 0;
-        
-                for (int w = 0; w < width; w++)
+                for (int i = 0; i < w; i++, d += 3, s += 4)
                  {
                  {
-                    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;
-                    }
+                    d[0] = s[0];
+                    d[1] = s[1];
+                    d[2] = s[2];
                  }
                  }
-            
-                // 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 );
      }
      }
-    
-    return bmp; 
  }
  }
-
-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") )
-
-    if (image.GetWidth() <= 0 || image.GetHeight() <= 0)
-        return false;
-    
-    m_refData = new wxBitmapRefData();
-
-    if (depth == 1)
-    {
-        return CreateFromImageAsBitmap(image);
-    }
-    else
-    {
-#ifdef __WXGTK20__
-        if (image.HasAlpha())
-            return CreateFromImageAsPixbuf(image);
  #endif
  #endif
-        return CreateFromImageAsPixmap(image);
-    }
-}
  
  
-// conversion to mono bitmap:
-bool wxBitmap::CreateFromImageAsBitmap(const wxImage& img)
+#if wxUSE_IMAGE
+#ifdef __WXGTK3__
+wxBitmap::wxBitmap(const wxImage& image, int depth)
  {
  {
-    // 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 );
-
-    SetBitmap( gdk_pixmap_new( wxGetRootWindow()->window, width, height, 1 ) );
-
-    SetDepth( 1 );
-
-    GdkVisual *visual = wxTheApp->GetGdkVisual();
-
-    // Create picture image
-
-    unsigned char *data_data = (unsigned char*)malloc( ((width >> 3)+8) * height );
-
-    GdkImage *data_image =
-        gdk_image_new_bitmap( visual, data_data, width, height );
-
-    // Create mask image
-
-    GdkImage *mask_image = (GdkImage*) NULL;
-
-    if (image.HasMask())
+    wxCHECK_RET(image.IsOk(), "invalid image");
+
+    const int w = image.GetWidth();
+    const int h = image.GetHeight();
+    const guchar* alpha = image.GetAlpha();
+    if (depth < 0)
+        depth = alpha ? 32 : 24;
+    else if (depth != 1 && depth != 32)
+        depth = 24;
+    wxBitmapRefData* bmpData = new wxBitmapRefData(w, h, depth);
+    m_refData = bmpData;
+    GdkPixbuf* pixbuf_dst = gdk_pixbuf_new(GDK_COLORSPACE_RGB, depth == 32, 8, w, h);
+    bmpData->m_pixbufNoMask = pixbuf_dst;
+    wxASSERT(bmpData->m_bpp == 32 || !gdk_pixbuf_get_has_alpha(bmpData->m_pixbufNoMask));
+    const guchar* src = image.GetData();
+
+    guchar* dst = gdk_pixbuf_get_pixels(pixbuf_dst);
+    const int dstStride = gdk_pixbuf_get_rowstride(pixbuf_dst);
+    CopyImageData(dst, gdk_pixbuf_get_n_channels(pixbuf_dst), dstStride, src, 3, 3 * w, w, h);
+
+    if (depth == 32 && alpha)
      {
      {
-        unsigned char *mask_data = (unsigned char*)malloc( ((width >> 3)+8) * 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 );
-
-        SetMask( mask );
+        for (int j = 0; j < h; j++, dst += dstStride)
+            for (int i = 0; i < w; i++)
+                dst[i * 4 + 3] = *alpha++;
      }
      }
-
-    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++)
-    {
-        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 );
-            }
-
-            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 );
-
-        } // for
-    }  // for
-
-    // Blit picture
-
-    GdkGC *data_gc = gdk_gc_new( GetBitmap() );
-
-    gdk_draw_image( GetBitmap(), 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())
      {
      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_image_destroy( mask_image );
-        gdk_gc_unref( mask_gc );
+        const guchar r = image.GetMaskRed();
+        const guchar g = image.GetMaskGreen();
+        const guchar b = image.GetMaskBlue();
+        cairo_surface_t* surface = cairo_image_surface_create(CAIRO_FORMAT_A8, w, h);
+        const int stride = cairo_image_surface_get_stride(surface);
+        dst = cairo_image_surface_get_data(surface);
+        memset(dst, 0xff, stride * h);
+        for (int j = 0; j < h; j++, dst += stride)
+            for (int i = 0; i < w; i++, src += 3)
+                if (src[0] == r && src[1] == g && src[2] == b)
+                    dst[i] = 0;
+        cairo_surface_mark_dirty(surface);
+        bmpData->m_mask = new wxMask(surface);
      }
      }
-
-    return true;
  }
  }
-    
-// 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 width = image.GetWidth();
-    int height = image.GetHeight();
-
-    SetHeight( height );
-    SetWidth( width );
-
-    SetPixmap( gdk_pixmap_new( wxGetRootWindow()->window, width, height, -1 ) );
-
-    GdkVisual *visual = wxTheApp->GetGdkVisual();
-
-    int bpp = visual->depth;
-
-    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))
  #else
  #else
-    if (!image.HasMask() && (bpp > 12))
-#endif
-    {
-        static bool s_hasInitialized = FALSE;
-
-        if (!s_hasInitialized)
-        {
-            gdk_rgb_init();
-            s_hasInitialized = TRUE;
-        }
-
-        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_gc_unref( gc );
-        return TRUE;
-    }
-
-    // Create picture image
-
-    GdkImage *data_image =
-        gdk_image_new( GDK_IMAGE_FASTEST, visual, width, height );
-
-    // Create mask image
-
-    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( visual, mask_data, width, height );
-
-        wxMask *mask = new wxMask();
-        mask->m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, width, height, 1 );
-
-        SetMask( mask );
-    }
-
-    // Render
-
-    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;
-    }
-
-    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++)
-    {
-        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:
-                {
-                    int pixel = -1;
-                    if (wxTheApp->m_colorCube)
-                    {
-                        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++)
-                        {
-                            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 );
-
-                    break;
-                }
-                case 12:  // SGI only
-                {
-                    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 15:
-                {
-                    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 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)
-                    {
-                        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 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( GetPixmap() );
-
-    gdk_draw_image( GetPixmap(), data_gc, data_image, 0, 0, 0, 0, width, height );
+wxBitmap::wxBitmap(const wxImage& image, int depth)
+{
+    wxCHECK_RET(image.IsOk(), "invalid image");
  
  
-    gdk_image_destroy( data_image );
-    gdk_gc_unref( data_gc );
+    if (depth == 32 || (depth == -1 && image.HasAlpha()))
+        CreateFromImageAsPixbuf(image);
+    else
+        // otherwise create pixmap, if alpha is present it will be converted to mask
+        CreateFromImageAsPixmap(image, depth);
+}
  
  
-    // Blit mask
+bool wxBitmap::CreateFromImageAsPixmap(const wxImage& image, int depth)
+{
+    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;
  
  
-    if (image.HasMask())
+        if (!M_BMPDATA)     // SetPixmap may have failed
+            return false;
+    }
+    else
      {
      {
-        GdkGC *mask_gc = gdk_gc_new( GetMask()->GetBitmap() );
+        SetPixmap(gdk_pixmap_new(wxGetRootWindow()->window, w, h, depth));
+        if (!M_BMPDATA)
+            return false;
+
+        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);
+    }
  
  
-        gdk_draw_image( GetMask()->GetBitmap(), mask_gc, mask_image, 0, 0, 0, 0, width, height );
+    const wxByte* alpha = image.GetAlpha();
+    if (alpha != NULL || image.HasMask())
+    {
+        // create mask as XBM format bitmap
  
  
-        gdk_image_destroy( mask_image );
-        gdk_gc_unref( mask_gc );
+        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;
+            }
+        }
+        SetMask(new wxMask(gdk_bitmap_create_from_data(M_BMPDATA->m_pixmap, (char*)out, w, h)));
+        delete[] out;
      }
      }
-
-    return true;
+    return IsOk();
  }
  
  }
  
-#ifdef __WXGTK20__
  bool wxBitmap::CreateFromImageAsPixbuf(const wxImage& image)
  {
      int width = image.GetWidth();
      int height = image.GetHeight();
  
  bool wxBitmap::CreateFromImageAsPixbuf(const wxImage& image)
  {
      int width = image.GetWidth();
      int height = image.GetHeight();
  
-    GdkPixbuf *pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB,
-                                       image.HasAlpha(),
-                                       8 /* bits per sample */,
-                                       width, height);
+    Create(width, height, 32);
+    GdkPixbuf* pixbuf = GetPixbuf();
      if (!pixbuf)
          return false;
  
      if (!pixbuf)
          return false;
  
-    wxASSERT( gdk_pixbuf_get_n_channels(pixbuf) == 4 );
-    wxASSERT( gdk_pixbuf_get_width(pixbuf) == width );
-    wxASSERT( gdk_pixbuf_get_height(pixbuf) == height );
-    
-    M_BMPDATA->m_pixbuf = pixbuf;
-    SetHeight(height);
-    SetWidth(width);
-    SetDepth(wxTheApp->GetGdkVisual()->depth);
- 
      // Copy the data:
      // Copy the data:
-    unsigned char *in = image.GetData();
+    const unsigned char* in = image.GetData();
      unsigned char *out = gdk_pixbuf_get_pixels(pixbuf);
      unsigned char *alpha = image.GetAlpha();
      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)
+    int rowpad = gdk_pixbuf_get_rowstride(pixbuf) - 4 * width;
+
+    for (int y = 0; y < height; y++, out += rowpad)
      {
      {
-        for (int x = 0; x < width; x++, alpha++, out += 4, in += 3)
+        for (int x = 0; x < width; x++, out += 4, in += 3)
          {
              out[0] = in[0];
              out[1] = in[1];
              out[2] = in[2];
          {
              out[0] = in[0];
              out[1] = in[1];
              out[2] = in[2];
-            out[3] = *alpha;
+            if (alpha)
+                out[3] = *alpha++;
          }
      }
          }
      }
-    
+
      return true;
  }
      return true;
  }
-#endif // __WXGTK20__
+#endif
  
  wxImage wxBitmap::ConvertToImage() const
  {
  
  wxImage wxBitmap::ConvertToImage() const
  {
+#ifdef __WXGTK3__
      wxImage image;
      wxImage image;
-
-    wxCHECK_MSG( Ok(), wxNullImage, wxT("invalid bitmap") );
-    
-    image.Create(GetWidth(), GetHeight());
-    unsigned char *data = image.GetData();
-
-    if (!data)
+    wxCHECK_MSG(IsOk(), image, "invalid bitmap");
+    wxBitmapRefData* bmpData = M_BMPDATA;
+    const int w = bmpData->m_width;
+    const int h = bmpData->m_height;
+    image.Create(w, h, false);
+    guchar* dst = image.GetData();
+    GdkPixbuf* pixbuf_src = NULL;
+    if (bmpData->m_pixbufNoMask)
+        pixbuf_src = bmpData->m_pixbufNoMask;
+    else if (bmpData->m_surface)
      {
      {
-        wxFAIL_MSG( wxT("couldn't create image") );
-        return wxNullImage;
+        pixbuf_src = gdk_pixbuf_get_from_surface(bmpData->m_surface, 0, 0, w, h);
+        bmpData->m_pixbufNoMask = pixbuf_src;
+        wxASSERT(bmpData->m_bpp == 32 || !gdk_pixbuf_get_has_alpha(bmpData->m_pixbufNoMask));
      }
      }
-
-#ifdef __WXGTK20__
-    if (HasPixbuf())
+    if (pixbuf_src)
      {
      {
-        GdkPixbuf *pixbuf = GetPixbuf();
-        wxASSERT( gdk_pixbuf_get_has_alpha(pixbuf) );
-        
-        int w = GetWidth();
-        int h = GetHeight();
-        
-        image.SetAlpha();
-
-        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;
+        const guchar* src = gdk_pixbuf_get_pixels(pixbuf_src);
+        const int srcStride = gdk_pixbuf_get_rowstride(pixbuf_src);
+        const int srcChannels = gdk_pixbuf_get_n_channels(pixbuf_src);
+        CopyImageData(dst, 3, 3 * w, src, srcChannels, srcStride, w, h);
  
  
-        for (int y = 0; y < h; y++, in += rowinc)
+        if (srcChannels == 4)
          {
          {
-            for (int x = 0; x < w; x++, in += 4, out += 3, alpha++)
+            image.SetAlpha();
+            guchar* alpha = image.GetAlpha();
+            for (int j = 0; j < h; j++, src += srcStride)
              {
              {
-                out[0] = in[0];
-                out[1] = in[1];
-                out[2] = in[2];
-                *alpha = in[3];
+                const guchar* s = src;
+                for (int i = 0; i < w; i++, s += 4)
+                    *alpha++ = s[3];
              }
          }
      }
              }
          }
      }
-    else
-#endif // __WXGTK20__
+    cairo_surface_t* maskSurf = NULL;
+    if (bmpData->m_mask)
+        maskSurf = *bmpData->m_mask;
+    if (maskSurf)
      {
      {
-        // 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;
-
-        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
+        const guchar r = 1;
+        const guchar g = 2;
+        const guchar b = 3;
+        image.SetMaskColour(r, g, b);
+        wxASSERT(cairo_image_surface_get_format(maskSurf) == CAIRO_FORMAT_A8);
+        const int stride = cairo_image_surface_get_stride(maskSurf);
+        const guchar* src = cairo_image_surface_get_data(maskSurf);
+        for (int j = 0; j < h; j++, src += stride)
          {
          {
-            wxFAIL_MSG( wxT("Ill-formed bitmap") );
+            for (int i = 0; i < w; i++, dst += 3)
+                if (src[i] == 0)
+                {
+                    dst[0] = r;
+                    dst[1] = g;
+                    dst[2] = b;
+                }
+                else if (dst[0] == r && dst[1] == g && dst[2] == b)
+                    dst[2]--;
          }
          }
+    }
+#else
+    wxCHECK_MSG( IsOk(), wxNullImage, wxT("invalid bitmap") );
  
  
-        wxCHECK_MSG( gdk_image, wxNullImage, wxT("couldn't create image") );
+    const int w = GetWidth();
+    const int h = GetHeight();
+    wxImage image(w, h, false);
+    unsigned char *data = image.GetData();
  
  
-        GdkImage *gdk_image_mask = (GdkImage*) NULL;
-        if (GetMask())
-        {
-            gdk_image_mask = gdk_image_get( GetMask()->GetBitmap(),
-                                            0, 0,
-                                            GetWidth(), GetHeight() );
+    wxCHECK_MSG(data != NULL, wxNullImage, wxT("couldn't create image") );
  
  
-            image.SetMaskColour( MASK_RED, MASK_GREEN, MASK_BLUE );
+    // prefer pixbuf if available, it will preserve alpha and should be quicker
+    if (HasPixbuf())
+    {
+        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;
  
  
-        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())
+        for (int y = 0; y < h; y++, in += rowpad)
          {
          {
-            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);
+            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];
+            }
          }
          }
-        if (GetBitmap())
+    }
+    else
+    {
+        GdkPixmap* pixmap = GetPixmap();
+        GdkPixmap* pixmap_invert = NULL;
+        if (GetDepth() == 1)
          {
          {
-            bpp = 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);
  
  
-        GdkColormap *cmap = gtk_widget_get_default_colormap();
-
-        long pos = 0;
-        for (int j = 0; j < GetHeight(); j++)
+        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(), 0, 0, w, h);
+
+        for (int y = 0; y < h; y++)
          {
          {
-            for (int i = 0; i < GetWidth(); i++)
+            for (int x = 0; x < w; x++, data += 3)
              {
              {
-                wxUint32 pixel = gdk_image_get_pixel( gdk_image, i, j );
-                if (bpp == 1)
+                if (gdk_image_get_pixel(image_mask, x, y) == 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;
-                    }
+                    data[0] = MASK_RED;
+                    data[1] = MASK_GREEN;
+                    data[2] = MASK_BLUE;
                  }
                  }
-                else if (use_shift)
+                else if (data[0] == MASK_RED && data[1] == MASK_GREEN && data[2] == MASK_BLUE)
                  {
                  {
-                    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;
+                    // we have to fudge the colour a bit to prevent
+                    // this pixel from appearing transparent
+                    data[2] = MASK_BLUE_REPLACEMENT;
                  }
                  }
-                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)
-                    {
-                        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 );
+        g_object_unref(image_mask);
      }
      }
+#endif
  
      return image;
  }
  
  
      return image;
  }
  
-wxBitmap::wxBitmap( const wxBitmap& bmp )
-        : wxGDIObject()
-{
-    Ref( bmp );
-}
-
-wxBitmap::wxBitmap( const wxString &filename, int type )
-{
-    LoadFile( filename, type );
-}
-
-wxBitmap::wxBitmap( const char bits[], int width, int height, int WXUNUSED(depth))
-{
-    if ( width > 0 && height > 0 )
-    {
-        m_refData = new wxBitmapRefData();
-
-        M_BMPDATA->m_mask = (wxMask *) NULL;
-        M_BMPDATA->m_bitmap = gdk_bitmap_create_from_data
-                              (
-                                wxGetRootWindow()->window,
-                                (gchar *) bits,
-                                width,
-                                height
-                              );
-        M_BMPDATA->m_width = width;
-        M_BMPDATA->m_height = height;
-        M_BMPDATA->m_bpp = 1;
-
-        wxASSERT_MSG( M_BMPDATA->m_bitmap, wxT("couldn't create bitmap") );
-    }
-}
-
-wxBitmap::~wxBitmap()
-{
-}
-
-wxBitmap& wxBitmap::operator = ( const wxBitmap& bmp )
-{
-    if ( m_refData != bmp.m_refData )
-        Ref( bmp );
-
-    return *this;
-}
-
-bool wxBitmap::operator == ( const wxBitmap& bmp ) const
-{
-    return m_refData == bmp.m_refData;
-}
-
-bool wxBitmap::operator != ( const wxBitmap& bmp ) const
-{
-    return m_refData != bmp.m_refData;
-}
-
-bool wxBitmap::Ok() const
-{
-    return (m_refData != NULL) && 
-           (
-#ifdef __WXGTK20__
-              M_BMPDATA->m_pixbuf ||
-#endif
-              M_BMPDATA->m_bitmap || M_BMPDATA->m_pixmap 
-           );
-}
+#endif // wxUSE_IMAGE
  
  int wxBitmap::GetHeight() const
  {
  
  int wxBitmap::GetHeight() const
  {
-    wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
+    wxCHECK_MSG( IsOk(), -1, wxT("invalid bitmap") );
  
      return M_BMPDATA->m_height;
  }
  
  int wxBitmap::GetWidth() const
  {
  
      return M_BMPDATA->m_height;
  }
  
  int wxBitmap::GetWidth() const
  {
-    wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
+    wxCHECK_MSG( IsOk(), -1, wxT("invalid bitmap") );
  
      return M_BMPDATA->m_width;
  }
  
  int wxBitmap::GetDepth() const
  {
  
      return M_BMPDATA->m_width;
  }
  
  int wxBitmap::GetDepth() const
  {
-    wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
+    wxCHECK_MSG( IsOk(), -1, wxT("invalid bitmap") );
  
      return M_BMPDATA->m_bpp;
  }
  
  wxMask *wxBitmap::GetMask() const
  {
  
      return M_BMPDATA->m_bpp;
  }
  
  wxMask *wxBitmap::GetMask() const
  {
-    wxCHECK_MSG( Ok(), (wxMask *) NULL, wxT("invalid bitmap") );
+    wxCHECK_MSG( IsOk(), NULL, wxT("invalid bitmap") );
  
      return M_BMPDATA->m_mask;
  }
  
  void wxBitmap::SetMask( wxMask *mask )
  {
  
      return M_BMPDATA->m_mask;
  }
  
  void wxBitmap::SetMask( wxMask *mask )
  {
-    wxCHECK_RET( Ok(), wxT("invalid bitmap") );
-
-    if (M_BMPDATA->m_mask) delete M_BMPDATA->m_mask;
+    wxCHECK_RET( IsOk(), wxT("invalid bitmap") );
  
  
+    AllocExclusive();
+    delete M_BMPDATA->m_mask;
      M_BMPDATA->m_mask = mask;
  }
  
  bool wxBitmap::CopyFromIcon(const wxIcon& icon)
  {
      *this = icon;
      M_BMPDATA->m_mask = mask;
  }
  
  bool wxBitmap::CopyFromIcon(const wxIcon& icon)
  {
      *this = icon;
-    return TRUE;
+    return IsOk();
+}
+
+#ifdef __WXGTK3__
+static cairo_surface_t* GetSubSurface(cairo_surface_t* surface, const wxRect& rect)
+{
+    cairo_surface_flush(surface);
+    const cairo_format_t format = cairo_image_surface_get_format(surface);
+    int x = rect.x;
+    if (format != CAIRO_FORMAT_A8)
+        x *= 4;
+    cairo_surface_t* subSurface = cairo_image_surface_create(format, rect.width, rect.height);
+    const int srcStride = cairo_image_surface_get_stride(surface);
+    const int dstStride = cairo_image_surface_get_stride(subSurface);
+    const guchar* src = cairo_image_surface_get_data(surface) + rect.y * srcStride + x;
+    guchar* dst = cairo_image_surface_get_data(subSurface);
+    for (int j = 0; j < rect.height; j++, src += srcStride, dst += dstStride)
+        memcpy(dst, src, dstStride);
+    cairo_surface_mark_dirty(subSurface);
+    return subSurface;
  }
  }
+#endif
  
  wxBitmap wxBitmap::GetSubBitmap( const wxRect& rect) const
  {
  
  wxBitmap wxBitmap::GetSubBitmap( const wxRect& rect) const
  {
-    wxCHECK_MSG( Ok() &&
-                 (rect.x >= 0) && (rect.y >= 0) &&
-                 (rect.x+rect.width <= M_BMPDATA->m_width) && (rect.y+rect.height <= M_BMPDATA->m_height),
-                 wxNullBitmap, wxT("invalid bitmap or bitmap region") );
+    wxBitmap ret;
  
  
-    wxBitmap ret( rect.width, rect.height, M_BMPDATA->m_bpp );
-    wxASSERT_MSG( ret.Ok(), wxT("GetSubBitmap error") );
+    wxCHECK_MSG(IsOk(), ret, wxT("invalid bitmap"));
  
  
-#ifdef __WXGTK20__
-    if (HasPixbuf())
+    const int w = rect.width;
+    const int h = rect.height;
+    const wxBitmapRefData* bmpData = M_BMPDATA;
+
+    wxCHECK_MSG(rect.x >= 0 && rect.y >= 0 &&
+                rect.x + w <= bmpData->m_width &&
+                rect.y + h <= bmpData->m_height,
+                ret, wxT("invalid bitmap region"));
+
+    wxBitmapRefData * const newRef = new wxBitmapRefData(w, h, bmpData->m_bpp);
+    ret.m_refData = newRef;
+
+#ifdef __WXGTK3__
+    if (bmpData->m_pixbufNoMask)
      {
      {
-        GdkPixbuf *pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB,
-                                           TRUE/*has_alpha*/,
-                                           8, GetWidth(), GetHeight());
-        ret.SetPixbuf(pixbuf);
-        gdk_pixbuf_copy_area(M_BMPDATA->m_pixbuf,
-                             rect.x, rect.y, rect.width, rect.height,
-                             pixbuf, 0, 0);
+        GdkPixbuf* pixbuf = gdk_pixbuf_new_subpixbuf(bmpData->m_pixbufNoMask, rect.x, rect.y, w, h);
+        newRef->m_pixbufNoMask = gdk_pixbuf_copy(pixbuf);
+        wxASSERT(newRef->m_bpp == 32 || !gdk_pixbuf_get_has_alpha(newRef->m_pixbufNoMask));
+        g_object_unref(pixbuf);
      }
      }
-    else
-#endif // __WXGTK20__
+    else if (bmpData->m_surface)
+        newRef->m_surface = GetSubSurface(bmpData->m_surface, rect);
+
+    cairo_surface_t* maskSurf = NULL;
+    if (bmpData->m_mask)
+        maskSurf = *bmpData->m_mask;
+    if (maskSurf)
      {
      {
-        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 );
-        }
+        newRef->m_mask = new wxMask(GetSubSurface(maskSurf, rect));
      }
      }
-
-    if (GetMask())
+#else
+    if (bmpData->m_pixbuf)
      {
      {
-        wxMask *mask = new wxMask;
-        mask->m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, rect.width, rect.height, 1 );
-
-        GdkGC *gc = gdk_gc_new( mask->m_bitmap );
-        GdkColor col;
-        col.pixel = 0xFFFFFF;
-        gdk_gc_set_foreground( gc, &col );
-        col.pixel = 0;
-        gdk_gc_set_background( gc, &col );
-        gdk_wx_draw_bitmap( mask->m_bitmap, gc, M_BMPDATA->m_mask->m_bitmap, rect.x, rect.y, 0, 0, rect.width, rect.height );
-        gdk_gc_destroy( gc );
-
-        ret.SetMask( mask );
+        GdkPixbuf* pixbuf =
+            gdk_pixbuf_new_subpixbuf(bmpData->m_pixbuf, rect.x, rect.y, w, h);
+        newRef->m_pixbuf = gdk_pixbuf_copy(pixbuf);
+        g_object_unref(pixbuf);
      }
      }
+    if (bmpData->m_pixmap)
+    {
+        newRef->m_pixmap = gdk_pixmap_new(bmpData->m_pixmap, w, h, -1);
+        GdkGC* gc = gdk_gc_new(newRef->m_pixmap);
+        gdk_draw_drawable(
+            newRef->m_pixmap, gc, bmpData->m_pixmap, rect.x, rect.y, 0, 0, w, h);
+        g_object_unref(gc);
+    }
+    GdkPixmap* mask = NULL;
+    if (bmpData->m_mask)
+        mask = *bmpData->m_mask;
+    if (mask)
+    {
+        GdkPixmap* sub_mask = gdk_pixmap_new(mask, w, h, 1);
+        newRef->m_mask = new wxMask(sub_mask);
+        GdkGC* gc = gdk_gc_new(sub_mask);
+        gdk_draw_drawable(
+            sub_mask, gc, mask, rect.x, rect.y, 0, 0, w, h);
+        g_object_unref(gc);
+    }
+#endif
  
      return ret;
  }
  
  
      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( IsOk(), false, wxT("invalid bitmap") );
  
  
-    // Try to save the bitmap via wxImage handlers:
+#if wxUSE_IMAGE
+    wxImage image = ConvertToImage();
+    if (image.IsOk() && image.SaveFile(name, type))
+        return true;
+#endif
+    const char* type_name = NULL;
+    switch (type)
      {
      {
-        wxImage image = ConvertToImage();
-        if (image.Ok()) return image.SaveFile( name, type );
+        case wxBITMAP_TYPE_BMP:  type_name = "bmp";  break;
+        case wxBITMAP_TYPE_ICO:  type_name = "ico";  break;
+        case wxBITMAP_TYPE_JPEG: type_name = "jpeg"; break;
+        case wxBITMAP_TYPE_PNG:  type_name = "png";  break;
+        default: break;
      }
      }
-
-    return FALSE;
+    return type_name &&
+        gdk_pixbuf_save(GetPixbuf(), wxGTK_CONV_FN(name), type_name, NULL, NULL);
  }
  
  }
  
-bool wxBitmap::LoadFile( const wxString &name, int type )
+bool wxBitmap::LoadFile( const wxString &name, wxBitmapType type )
  {
  {
-    UnRef();
-
-    if (!wxFileExists(name))
-        return FALSE;
-
-    GdkVisual *visual = wxTheApp->GetGdkVisual();
-
-    if (type == wxBITMAP_TYPE_XPM)
-    {
-        m_refData = new wxBitmapRefData();
-
-        GdkBitmap *mask = (GdkBitmap*) NULL;
-
-        M_BMPDATA->m_pixmap = gdk_pixmap_create_from_xpm
-                              (
-                                wxGetRootWindow()->window,
-                                &mask,
-                                NULL,
-                                name.fn_str()
-                              );
-
-        if (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 = visual->depth;
-    }
-    else // try if wxImage can load it
+#if wxUSE_IMAGE
+    wxImage image;
+    if (image.LoadFile(name, type) && image.IsOk())
+        *this = wxBitmap(image);
+    else
+#endif
      {
      {
-        wxImage image;
-        if ( !image.LoadFile( name, type ) || !image.Ok() )
-            return FALSE;
+        wxUnusedVar(type); // The type is detected automatically by GDK.
  
  
-        *this = wxBitmap(image);
+        *this = wxBitmap(gdk_pixbuf_new_from_file(wxGTK_CONV_FN(name), NULL));
      }
  
      }
  
-    return TRUE;
+    return IsOk();
  }
  
  }
  
+#if wxUSE_PALETTE
  wxPalette *wxBitmap::GetPalette() const
  {
  wxPalette *wxBitmap::GetPalette() const
  {
-    if (!Ok())
-        return (wxPalette *) NULL;
+    return NULL;
+}
  
  
-    return M_BMPDATA->m_palette;
+void wxBitmap::SetPalette(const wxPalette& WXUNUSED(palette))
+{
+    // TODO
  }
  }
+#endif // wxUSE_PALETTE
  
  void wxBitmap::SetHeight( int height )
  {
  
  void wxBitmap::SetHeight( int height )
  {
-    if (!m_refData)
-        m_refData = new wxBitmapRefData();
-
+    AllocExclusive();
      M_BMPDATA->m_height = height;
  }
  
  void wxBitmap::SetWidth( int width )
  {
      M_BMPDATA->m_height = height;
  }
  
  void wxBitmap::SetWidth( int width )
  {
-    if (!m_refData)
-        m_refData = new wxBitmapRefData();
-
+    AllocExclusive();
      M_BMPDATA->m_width = width;
  }
  
  void wxBitmap::SetDepth( int depth )
  {
      M_BMPDATA->m_width = width;
  }
  
  void wxBitmap::SetDepth( int depth )
  {
-    if (!m_refData)
-        m_refData = new wxBitmapRefData();
-
+    AllocExclusive();
      M_BMPDATA->m_bpp = depth;
  }
  
      M_BMPDATA->m_bpp = depth;
  }
  
+#ifndef __WXGTK3__
  void wxBitmap::SetPixmap( GdkPixmap *pixmap )
  {
  void wxBitmap::SetPixmap( GdkPixmap *pixmap )
  {
-    if (!m_refData)
-        m_refData = new wxBitmapRefData();
-
-    M_BMPDATA->m_pixmap = pixmap;
-}
+    UnRef();
  
  
-void wxBitmap::SetBitmap( GdkPixmap *bitmap )
-{
-    if (!m_refData)
-        m_refData = new wxBitmapRefData();
+    if (!pixmap)
+        return;
  
  
-    M_BMPDATA->m_bitmap = bitmap;
+    int w, h;
+    gdk_drawable_get_size(pixmap, &w, &h);
+    wxBitmapRefData* bmpData = new wxBitmapRefData(w, h, 0);
+    m_refData = bmpData;
+    bmpData->m_pixmap = pixmap;
+    bmpData->m_bpp = gdk_drawable_get_depth(pixmap);
  }
  
  GdkPixmap *wxBitmap::GetPixmap() const
  {
  }
  
  GdkPixmap *wxBitmap::GetPixmap() const
  {
-    wxCHECK_MSG( Ok(), (GdkPixmap *) NULL, wxT("invalid bitmap") );
+    wxCHECK_MSG( IsOk(), NULL, wxT("invalid bitmap") );
  
  
-#ifdef __WXGTK20__
-    // create the pixmap on the fly if we use Pixbuf representation:
-    if (HasPixbuf() && !HasPixmap())
+    wxBitmapRefData* bmpData = M_BMPDATA;
+    if (bmpData->m_pixmap)
+        return bmpData->m_pixmap;
+
+    if (bmpData->m_pixbuf)
+    {
+        GdkPixmap* pixmap = NULL;
+        GdkPixmap** mask_pixmap = NULL;
+        if (gdk_pixbuf_get_has_alpha(bmpData->m_pixbuf))
+        {
+            // make new mask from alpha
+            mask_pixmap = &pixmap;
+        }
+        gdk_pixbuf_render_pixmap_and_mask(
+            bmpData->m_pixbuf, &bmpData->m_pixmap, mask_pixmap, 128);
+        if (pixmap)
+        {
+            delete bmpData->m_mask;
+            bmpData->m_mask = new wxMask(pixmap);
+        }
+    }
+    else
      {
      {
-        gdk_pixbuf_render_pixmap_and_mask(M_BMPDATA->m_pixbuf,
-                                          &M_BMPDATA->m_pixmap,
-                                          NULL /*mask*/,
-                                          128 /*threshold*/);
+        bmpData->m_pixmap = gdk_pixmap_new(wxGetRootWindow()->window,
+            bmpData->m_width, bmpData->m_height, bmpData->m_bpp == 1 ? 1 : -1);
      }
      }
-#endif // __WXGTK20__
-
-    return M_BMPDATA->m_pixmap;
+    return bmpData->m_pixmap;
  }
  
  bool wxBitmap::HasPixmap() const
  {
  }
  
  bool wxBitmap::HasPixmap() const
  {
-    wxCHECK_MSG( Ok(), false, wxT("invalid bitmap") );
+    wxCHECK_MSG( IsOk(), false, wxT("invalid bitmap") );
  
      return M_BMPDATA->m_pixmap != NULL;
  }
  
      return M_BMPDATA->m_pixmap != NULL;
  }
+#endif
  
  
-GdkBitmap *wxBitmap::GetBitmap() const
+#ifdef __WXGTK3__
+GdkPixbuf* wxBitmap::GetPixbufNoMask() const
  {
  {
-    wxCHECK_MSG( Ok(), (GdkBitmap *) NULL, wxT("invalid bitmap") );
+    wxCHECK_MSG(IsOk(), NULL, "invalid bitmap");
+
+    wxBitmapRefData* bmpData = M_BMPDATA;
+    GdkPixbuf* pixbuf = bmpData->m_pixbufNoMask;
+    if (pixbuf)
+        return pixbuf;
+
+    const int w = bmpData->m_width;
+    const int h = bmpData->m_height;
+    if (bmpData->m_surface)
+        pixbuf = gdk_pixbuf_get_from_surface(bmpData->m_surface, 0, 0, w, h);
+    else
+        pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, bmpData->m_bpp == 32, 8, w, h);
+    bmpData->m_pixbufNoMask = pixbuf;
+    wxASSERT(bmpData->m_bpp == 32 || !gdk_pixbuf_get_has_alpha(bmpData->m_pixbufNoMask));
  
  
-    return M_BMPDATA->m_bitmap;
+    return pixbuf;
  }
  
  }
  
-#ifdef __WXGTK20__
-GdkPixbuf *wxBitmap::GetPixbuf() const
+// helper to set up a simulated depth 1 surface
+static void SetSourceSurface1(const wxBitmapRefData* bmpData, cairo_t* cr, int x, int y, const wxColour* fg, const wxColour* bg)
  {
  {
-    wxCHECK_MSG( Ok(), NULL, wxT("invalid bitmap") );
+    GdkPixbuf* pixbuf = gdk_pixbuf_copy(bmpData->m_pixbufNoMask);
+    const int w = bmpData->m_width;
+    const int h = bmpData->m_height;
+    const int stride = gdk_pixbuf_get_rowstride(pixbuf);
+    const int channels = gdk_pixbuf_get_n_channels(pixbuf);
+    guchar* dst = gdk_pixbuf_get_pixels(pixbuf);
+    guchar fg_r = 0, fg_g = 0, fg_b = 0;
+    if (fg && fg->IsOk())
+    {
+        fg_r = fg->Red();
+        fg_g = fg->Green();
+        fg_b = fg->Blue();
+    }
+    guchar bg_r = 255, bg_g = 255, bg_b = 255;
+    if (bg && bg->IsOk())
+    {
+        bg_r = bg->Red();
+        bg_g = bg->Green();
+        bg_b = bg->Blue();
+    }
+    for (int j = 0; j < h; j++, dst += stride)
+    {
+        guchar* d = dst;
+        for (int i = 0; i < w; i++, d += channels)
+            if (d[0])
+            {
+                d[0] = bg_r;
+                d[1] = bg_g;
+                d[2] = bg_b;
+            }
+            else
+            {
+                d[0] = fg_r;
+                d[1] = fg_g;
+                d[2] = fg_b;
+            }
+    }
+    gdk_cairo_set_source_pixbuf(cr, pixbuf, x, y);
+    g_object_unref(pixbuf);
+}
  
  
-    return M_BMPDATA->m_pixbuf;
+void wxBitmap::SetSourceSurface(cairo_t* cr, int x, int y, const wxColour* fg, const wxColour* bg) const
+{
+    wxBitmapRefData* bmpData = M_BMPDATA;
+    if (bmpData->m_surface)
+    {
+        cairo_set_source_surface(cr, bmpData->m_surface, x, y);
+        return;
+    }
+    wxCHECK_RET(bmpData->m_pixbufNoMask, "no bitmap data");
+    if (bmpData->m_bpp == 1)
+        SetSourceSurface1(bmpData, cr, x, y, fg, bg);
+    else
+    {
+        gdk_cairo_set_source_pixbuf(cr, bmpData->m_pixbufNoMask, x, y);
+        cairo_pattern_get_surface(cairo_get_source(cr), &bmpData->m_surface);
+        cairo_surface_reference(bmpData->m_surface);
+    }
  }
  
  }
  
-bool wxBitmap::HasPixbuf() const
+cairo_t* wxBitmap::CairoCreate() const
  {
  {
-    wxCHECK_MSG( Ok(), false, wxT("invalid bitmap") );
+    wxCHECK_MSG(IsOk(), NULL, "invalid bitmap");
  
  
-    return M_BMPDATA->m_pixbuf != NULL;
+    wxBitmapRefData* bmpData = M_BMPDATA;
+    cairo_t* cr;
+    if (bmpData->m_surface)
+        cr = cairo_create(bmpData->m_surface);
+    else
+    {
+        GdkPixbuf* pixbuf = bmpData->m_pixbufNoMask;
+        const bool useAlpha = bmpData->m_bpp == 32 || (pixbuf && gdk_pixbuf_get_has_alpha(pixbuf));
+        bmpData->m_surface = cairo_image_surface_create(
+            useAlpha ? CAIRO_FORMAT_ARGB32 : CAIRO_FORMAT_RGB24,
+            bmpData->m_width, bmpData->m_height);
+        cr = cairo_create(bmpData->m_surface);
+        if (pixbuf)
+        {
+            gdk_cairo_set_source_pixbuf(cr, pixbuf, 0, 0);
+            cairo_paint(cr);
+            cairo_set_source_rgb(cr, 0, 0, 0);
+        }
+    }
+    if (bmpData->m_pixbufNoMask)
+    {
+        g_object_unref(bmpData->m_pixbufNoMask);
+        bmpData->m_pixbufNoMask = NULL;
+    }
+    if (bmpData->m_pixbufMask)
+    {
+        g_object_unref(bmpData->m_pixbufMask);
+        bmpData->m_pixbufMask = NULL;
+    }
+    wxASSERT(cr && cairo_status(cr) == 0);
+    return cr;
+}
+
+void wxBitmap::Draw(cairo_t* cr, int x, int y, bool useMask, const wxColour* fg, const wxColour* bg) const
+{
+    wxCHECK_RET(IsOk(), "invalid bitmap");
+
+    wxBitmapRefData* bmpData = M_BMPDATA;
+    SetSourceSurface(cr, x, y, fg, bg);
+    cairo_pattern_set_filter(cairo_get_source(cr), CAIRO_FILTER_NEAREST);
+    cairo_surface_t* mask = NULL;
+    if (useMask && bmpData->m_mask)
+        mask = *bmpData->m_mask;
+    if (mask)
+        cairo_mask_surface(cr, mask, x, y);
+    else
+        cairo_paint(cr);
+}
+#endif
+
+GdkPixbuf *wxBitmap::GetPixbuf() const
+{
+    wxCHECK_MSG( IsOk(), NULL, wxT("invalid bitmap") );
+
+    wxBitmapRefData* bmpData = M_BMPDATA;
+#ifdef __WXGTK3__
+    if (bmpData->m_pixbufMask)
+        return bmpData->m_pixbufMask;
+
+    if (bmpData->m_pixbufNoMask == NULL)
+        GetPixbufNoMask();
+    cairo_surface_t* mask = NULL;
+    if (bmpData->m_mask)
+        mask = *bmpData->m_mask;
+    if (mask == NULL)
+        return bmpData->m_pixbufNoMask;
+
+    const int w = bmpData->m_width;
+    const int h = bmpData->m_height;
+    bmpData->m_pixbufMask = gdk_pixbuf_new(GDK_COLORSPACE_RGB, true, 8, w, h);
+
+    guchar* dst = gdk_pixbuf_get_pixels(bmpData->m_pixbufMask);
+    const int dstStride = gdk_pixbuf_get_rowstride(bmpData->m_pixbufMask);
+    CopyImageData(dst, 4, dstStride,
+        gdk_pixbuf_get_pixels(bmpData->m_pixbufNoMask),
+        gdk_pixbuf_get_n_channels(bmpData->m_pixbufNoMask),
+        gdk_pixbuf_get_rowstride(bmpData->m_pixbufNoMask),
+        w, h);
+
+    const guchar* src = cairo_image_surface_get_data(mask);
+    const int srcStride = cairo_image_surface_get_stride(mask);
+    for (int j = 0; j < h; j++, src += srcStride, dst += dstStride)
+        for (int i = 0; i < w; i++)
+            if (src[i] == 0)
+                dst[i * 4 + 3] = 0;
+
+    return bmpData->m_pixbufMask;
+#else
+    if (bmpData->m_pixbuf)
+        return bmpData->m_pixbuf;
+
+    const int w = bmpData->m_width;
+    const int h = bmpData->m_height;
+    GdkPixmap* mask = NULL;
+    if (bmpData->m_mask)
+        mask = *bmpData->m_mask;
+    const bool useAlpha = bmpData->m_alphaRequested || mask;
+    bmpData->m_pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, useAlpha, 8, w, h);
+    if (bmpData->m_pixmap)
+        PixmapToPixbuf(bmpData->m_pixmap, bmpData->m_pixbuf, w, h);
+    if (mask)
+        MaskToAlpha(mask, bmpData->m_pixbuf, w, h);
+    return bmpData->m_pixbuf;
+#endif
  }
  
  }
  
-void wxBitmap::SetPixbuf( GdkPixbuf *pixbuf )
+#ifndef __WXGTK3__
+bool wxBitmap::HasPixbuf() const
  {
  {
-    if (!m_refData)
-        m_refData = new wxBitmapRefData();
+    wxCHECK_MSG( IsOk(), false, wxT("invalid bitmap") );
  
  
-    M_BMPDATA->m_pixbuf = pixbuf;
+    return M_BMPDATA->m_pixbuf != NULL;
  }
  
  void wxBitmap::PurgeOtherRepresentations(wxBitmap::Representation keep)
  {
      if (keep == Pixmap && HasPixbuf())
      {
  }
  
  void wxBitmap::PurgeOtherRepresentations(wxBitmap::Representation keep)
  {
      if (keep == Pixmap && HasPixbuf())
      {
-        gdk_pixbuf_unref( M_BMPDATA->m_pixbuf );
+        g_object_unref (M_BMPDATA->m_pixbuf);
          M_BMPDATA->m_pixbuf = NULL;
      }
      if (keep == Pixbuf && HasPixmap())
      {
          M_BMPDATA->m_pixbuf = NULL;
      }
      if (keep == Pixbuf && HasPixmap())
      {
-        gdk_pixmap_unref( M_BMPDATA->m_pixmap );
+        g_object_unref (M_BMPDATA->m_pixmap);
          M_BMPDATA->m_pixmap = NULL;
      }
  }
          M_BMPDATA->m_pixmap = NULL;
      }
  }
+#endif
+
+#ifdef wxHAS_RAW_BITMAP
+void *wxBitmap::GetRawData(wxPixelDataBase& data, int bpp)
+{
+    void* bits = NULL;
+#ifdef __WXGTK3__
+    GdkPixbuf* pixbuf = GetPixbufNoMask();
+    if ((bpp == 32) == (gdk_pixbuf_get_has_alpha(pixbuf) != 0))
+    {
+        bits = gdk_pixbuf_get_pixels(pixbuf);
+        wxBitmapRefData* bmpData = M_BMPDATA;
+        data.m_width = bmpData->m_width;
+        data.m_height = bmpData->m_height;
+        data.m_stride = gdk_pixbuf_get_rowstride(pixbuf);
+        if (bmpData->m_pixbufMask)
+        {
+            g_object_unref(bmpData->m_pixbufMask);
+            bmpData->m_pixbufMask = NULL;
+        }
+        if (bmpData->m_surface)
+        {
+            cairo_surface_destroy(bmpData->m_surface);
+            bmpData->m_surface = NULL;
+        }
+    }
+#else
+    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)) )
+    {
+        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);
+    }
+#endif
+    return bits;
+}
+
+void wxBitmap::UngetRawData(wxPixelDataBase& WXUNUSED(data))
+{
+}
+#endif // wxHAS_RAW_BITMAP
+
+bool wxBitmap::HasAlpha() const
+{
+    const wxBitmapRefData* bmpData = M_BMPDATA;
+#ifdef __WXGTK3__
+    return bmpData && bmpData->m_bpp == 32;
+#else
+    return bmpData && (bmpData->m_alphaRequested ||
+        (bmpData->m_pixbuf && gdk_pixbuf_get_has_alpha(bmpData->m_pixbuf)));
+#endif
+}
+
+wxGDIRefData* wxBitmap::CreateGDIRefData() const
+{
+    return new wxBitmapRefData(0, 0, 0);
+}
  
  
-#endif // __WXGTK20__
+wxGDIRefData* wxBitmap::CloneGDIRefData(const wxGDIRefData* data) const
+{
+    const wxBitmapRefData* oldRef = static_cast<const wxBitmapRefData*>(data);
+    wxBitmapRefData * const newRef = new wxBitmapRefData(oldRef->m_width,
+                                                         oldRef->m_height,
+                                                         oldRef->m_bpp);
+#ifdef __WXGTK3__
+    if (oldRef->m_pixbufNoMask)
+        newRef->m_pixbufNoMask = gdk_pixbuf_copy(oldRef->m_pixbufNoMask);
+    if (oldRef->m_surface)
+    {
+        const int w = oldRef->m_width;
+        const int h = oldRef->m_height;
+        cairo_surface_t* surface = cairo_image_surface_create(
+            cairo_image_surface_get_format(oldRef->m_surface), w, h);
+        newRef->m_surface = surface;
+        cairo_surface_flush(oldRef->m_surface);
+        const guchar* src = cairo_image_surface_get_data(oldRef->m_surface);
+        guchar* dst = cairo_image_surface_get_data(surface);
+        const int stride = cairo_image_surface_get_stride(surface);
+        wxASSERT(stride == cairo_image_surface_get_stride(oldRef->m_surface));
+        memcpy(dst, src, stride * h);
+        cairo_surface_mark_dirty(surface);
+    }
+#else
+    if (oldRef->m_pixmap != NULL)
+    {
+        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);
+    }
+    if (oldRef->m_pixbuf != NULL)
+    {
+        newRef->m_pixbuf = gdk_pixbuf_copy(oldRef->m_pixbuf);
+    }
+#endif
+    if (oldRef->m_mask != NULL)
+    {
+        newRef->m_mask = new wxMask(*oldRef->m_mask);
+    }
+
+    return newRef;
+}
+
+/* static */ void wxBitmap::InitStandardHandlers()
+{
+    // TODO: Insert handler based on GdkPixbufs handler later
+}