Ensure we don't modify a shared object in wxOSX wxRegion::DoOffset().

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

diff --git a/src/gtk/bitmap.cpp b/src/gtk/bitmap.cpp
index 832600e1a2d78c5434e7a7b5c74a75c4318077be..a50e8a8e26085d9ed8b0557747489be173b17741 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:      $Id$


@@ -7,99 +7,204 @@
 // 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 "wx/image.h"

 
 

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

 
 //-----------------------------------------------------------------------------
 // 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)
+{
+    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);

 }
 
 wxMask::wxMask( const wxBitmap& bitmap, const wxColour& colour )
 {
 }
 
 wxMask::wxMask( const wxBitmap& bitmap, const wxColour& colour )
 {

-    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 = NULL;

     Create( bitmap, paletteIndex );
 }
     Create( bitmap, paletteIndex );
 }

+#endif // wxUSE_PALETTE

 
 wxMask::wxMask( const wxBitmap& bitmap )
 {
 
 wxMask::wxMask( const wxBitmap& bitmap )
 {

-    Create( bitmap );
+    m_bitmap = NULL;
+    InitFromMonoBitmap(bitmap);

 }
 
 wxMask::~wxMask()
 {
 }
 
 wxMask::~wxMask()
 {

-    if (m_bitmap) gdk_bitmap_unref( m_bitmap );
+    if (m_bitmap)
+        g_object_unref (m_bitmap);

 }
 
 }
 

-bool wxMask::Create( const wxBitmap& bitmap, const wxColour& colour )
+void wxMask::FreeData()

 {
     if (m_bitmap)
 {
     if (m_bitmap)

-    { 
-        gdk_bitmap_unref( m_bitmap );
-       m_bitmap = (GdkBitmap*) NULL;
+    {
+        g_object_unref (m_bitmap);
+        m_bitmap = NULL;

     }
     }

-    
-    wxFAIL_MSG( _T("TODO") );
-    
-    return FALSE;

 }
 
 }
 

-bool wxMask::Create( const wxBitmap& WXUNUSED(bitmap), int WXUNUSED(paletteIndex) )
+bool wxMask::InitFromColour(const wxBitmap& bitmap, const wxColour& colour)

 {
 {

-    if (m_bitmap)
-    { 
-        gdk_bitmap_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);

     }
     }

-    
-    wxFAIL_MSG( _T("not implemented") );
-    
-    return FALSE;
+    m_bitmap = gdk_bitmap_create_from_data(wxGetRootWindow()->window, (char*)out, w, h);
+    delete[] out;
+    return true;

 }
 
 }
 

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

 {
 {

-    if (m_bitmap)
-    { 
-        gdk_bitmap_unref( m_bitmap );
-       m_bitmap = (GdkBitmap*) NULL;
-    }
-    
-    if (!bitmap.Ok()) return FALSE;
-    
-    wxCHECK_MSG( bitmap.GetBitmap(), FALSE, _T("Cannot create mask from colour bitmap") );
-    
-    m_bitmap = gdk_pixmap_new( (GdkWindow*) &gdk_root_parent, bitmap.GetWidth(), bitmap.GetHeight(), 1 );
-    
-    if (!m_bitmap) return FALSE;
-    
-    GdkGC *gc = gdk_gc_new( m_bitmap );
-    
-    gdk_draw_bitmap( m_bitmap, gc, bitmap.GetBitmap(), 0, 0, 0, 0, bitmap.GetWidth(), bitmap.GetHeight() );
-    
-    gdk_gc_unref( gc );
-    
-    return TRUE;
+    if (!bitmap.IsOk()) 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() const
 }
 
 GdkBitmap *wxMask::GetBitmap() const


@@ -108,324 +213,684 @@ GdkBitmap *wxMask::GetBitmap() const
 }
 
 //-----------------------------------------------------------------------------
 }
 
 //-----------------------------------------------------------------------------

-// wxBitmap
+// wxBitmapRefData

 //-----------------------------------------------------------------------------
 
 //-----------------------------------------------------------------------------
 

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

 {
 public:
 {
 public:

-  wxBitmapRefData();
-  ~wxBitmapRefData();
-
-  GdkPixmap      *m_pixmap;
-  GdkBitmap      *m_bitmap;
-  wxMask         *m_mask;
-  int             m_width;
-  int             m_height;
-  int             m_bpp;
-  wxPalette      *m_palette;
+    wxBitmapRefData(int width, int height, int depth);
+    virtual ~wxBitmapRefData();
+
+    virtual bool IsOk() const;
+
+    GdkPixmap      *m_pixmap;
+    GdkPixbuf      *m_pixbuf;
+    wxMask         *m_mask;
+    int             m_width;
+    int             m_height;
+    int             m_bpp;
+    bool m_alphaRequested;
+
+private:
+    // 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;
-    m_mask = (wxMask *) NULL;
-    m_width = 0;
-    m_height = 0;
-    m_bpp = 0;
-    m_palette = (wxPalette *) NULL;
+    m_pixmap = NULL;
+    m_pixbuf = NULL;
+    m_mask = NULL;
+    m_width = width;
+    m_height = height;
+    m_bpp = depth;
+    if (m_bpp < 0)
+        m_bpp = gdk_drawable_get_depth(wxGetRootWindow()->window);
+    m_alphaRequested = depth == 32;

 }
 
 wxBitmapRefData::~wxBitmapRefData()
 {
 }
 
 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;

 }
 
 }
 

+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)

 {
 {

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

 }
 
 }
 

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

 {
 {

-    wxCHECK_RET( (width > 0) && (height > 0), _T("invalid bitmap size") )
-    
-    GdkWindow *parent = (GdkWindow*) &gdk_root_parent;
-    if (depth == -1) depth = gdk_window_get_visual( parent )->depth;
-    
-    wxCHECK_RET( (depth ==  gdk_window_get_visual( parent )->depth) ||
-                 (depth == 1), _T("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)
+    wxASSERT(depth == 1);
+    if (width > 0 && height > 0 && depth == 1)

     {
     {

-        M_BMPDATA->m_bitmap = gdk_pixmap_new( parent, width, height, 1 );
-        M_BMPDATA->m_bpp = 1;
+        SetPixmap(gdk_bitmap_create_from_data(wxGetRootWindow()->window, bits, width, height));

     }
     }

-    else
-    {
-        M_BMPDATA->m_pixmap = gdk_pixmap_new( parent, width, height, depth );
-        M_BMPDATA->m_bpp = gdk_window_get_visual( parent )->depth;
-    }
-
-    if (wxTheBitmapList) wxTheBitmapList->AddBitmap(this);

 }
 
 }
 

-wxBitmap::wxBitmap( const char **bits )
+wxBitmap::wxBitmap(const char* const* bits)

 {
 {

-    wxCHECK_RET( bits != NULL, _T("invalid bitmap data") )
-
-    m_refData = new wxBitmapRefData();
+    wxCHECK2_MSG(bits != NULL, return, wxT("invalid bitmap data"));

 
 

-    GdkBitmap *mask = (GdkBitmap*) NULL;
-    GdkWindow *parent = (GdkWindow*) &gdk_root_parent;
+    GdkBitmap* mask = NULL;
+    SetPixmap(gdk_pixmap_create_from_xpm_d(wxGetRootWindow()->window, &mask, NULL, const_cast<char**>(bits)));
+    if (!M_BMPDATA)
+        return;

 
 

-    M_BMPDATA->m_pixmap = gdk_pixmap_create_from_xpm_d( parent, &mask, NULL, (gchar **) bits );
-
-    if (mask)
+    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) );
+wxBitmap::~wxBitmap()
+{
+}

 
 

-    M_BMPDATA->m_bpp = gdk_window_get_visual( parent )->depth;  // ?
-    if (wxTheBitmapList) wxTheBitmapList->AddBitmap(this);
+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( char **bits )
+#if wxUSE_IMAGE
+
+bool wxBitmap::CreateFromImage(const wxImage& image, int depth)

 {
 {

-    wxCHECK_RET( bits != NULL, _T("invalid bitmap data") )
+    UnRef();

 
 

-    m_refData = new wxBitmapRefData();
+    wxCHECK_MSG( image.IsOk(), false, wxT("invalid image") );
+    wxCHECK_MSG( depth == -1 || depth == 1, false, wxT("invalid bitmap depth") );

 
 

-    GdkBitmap *mask = (GdkBitmap*) NULL;
-    GdkWindow *parent = (GdkWindow*) &gdk_root_parent;
+    if (image.GetWidth() <= 0 || image.GetHeight() <= 0)
+        return false;

 
 

-    M_BMPDATA->m_pixmap = gdk_pixmap_create_from_xpm_d( parent, &mask, NULL, (gchar **) bits );
+    // create pixbuf if image has alpha and requested depth is compatible
+    if (image.HasAlpha() && (depth == -1 || depth == 32))
+        return CreateFromImageAsPixbuf(image);

 
 

-    wxCHECK_RET( M_BMPDATA->m_pixmap, _T("couldn't create pixmap") );
+    // otherwise create pixmap, if alpha is present it will be converted to mask
+    return CreateFromImageAsPixmap(image, depth);
+}

 
 

-    if (mask)
+bool wxBitmap::CreateFromImageAsPixmap(const wxImage& image, int depth)
+{
+    const int w = image.GetWidth();
+    const int h = image.GetHeight();
+    if (depth == 1)

     {
     {

-        M_BMPDATA->m_mask = new wxMask();
-        M_BMPDATA->m_mask->m_bitmap = mask;
+        // 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 (!M_BMPDATA)     // SetPixmap may have failed
+            return false;
+    }
+    else
+    {
+        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_window_get_size( M_BMPDATA->m_pixmap, &(M_BMPDATA->m_width), &(M_BMPDATA->m_height) );
+    const wxByte* alpha = image.GetAlpha();
+    if (alpha != NULL || image.HasMask())
+    {
+        // create mask as XBM format bitmap

 
 

-    M_BMPDATA->m_bpp = gdk_window_get_visual( parent )->depth;  // ?
-    if (wxTheBitmapList) wxTheBitmapList->AddBitmap(this);
+        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 IsOk();

 }
 
 }
 

-wxBitmap::wxBitmap( const wxBitmap& bmp )
+bool wxBitmap::CreateFromImageAsPixbuf(const wxImage& image)

 {
 {

-    Ref( bmp );
+    wxASSERT(image.HasAlpha());

 
 

-    if (wxTheBitmapList) wxTheBitmapList->AddBitmap(this);
-}
+    int width = image.GetWidth();
+    int height = image.GetHeight();

 
 

-wxBitmap::wxBitmap( const wxString &filename, int type )
-{
-    LoadFile( filename, type );
+    Create(width, height, 32);
+    GdkPixbuf* pixbuf = GetPixbuf();
+    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();

 
 

-    if (wxTheBitmapList) wxTheBitmapList->AddBitmap(this);
+    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)
+        {
+            out[0] = in[0];
+            out[1] = in[1];
+            out[2] = in[2];
+            out[3] = *alpha;
+        }
+    }
+
+    return true;

 }
 
 }
 

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

 {
 {

-    m_refData = new wxBitmapRefData();
+    wxCHECK_MSG( IsOk(), wxNullImage, wxT("invalid bitmap") );

 
 

-    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;
+    const int w = GetWidth();
+    const int h = GetHeight();
+    wxImage image(w, h, false);
+    unsigned char *data = image.GetData();

 
 

-    wxCHECK_RET( M_BMPDATA->m_bitmap, _T("couldn't create bitmap") );
+    wxCHECK_MSG(data != NULL, wxNullImage, wxT("couldn't create image") );

 
 

-    if (wxTheBitmapList) wxTheBitmapList->AddBitmap(this);
-}
+    // 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;

 
 

-wxBitmap::~wxBitmap()
-{
-    if (wxTheBitmapList) wxTheBitmapList->DeleteObject(this);
-}
+        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];
+            }
+        }
+    }
+    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);

 
 

-wxBitmap& wxBitmap::operator = ( const wxBitmap& bmp )
-{
-    if (*this == bmp) return (*this);
-    Ref( bmp );
-    return *this;
-}
+        gdk_pixbuf_get_from_drawable(pixbuf, pixmap, NULL, 0, 0, 0, 0, w, h);

 
 

-bool wxBitmap::operator == ( const wxBitmap& bmp )
-{
-    return m_refData == bmp.m_refData;
-}
+        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);
+    }

 
 

-bool wxBitmap::operator != ( const wxBitmap& bmp )
-{
-    return m_refData != bmp.m_refData;
+    return image;

 }
 
 }
 

-bool wxBitmap::Ok() const
-{
-    return (m_refData != NULL);
-}
+#endif // wxUSE_IMAGE

 
 int wxBitmap::GetHeight() const
 {
 
 int wxBitmap::GetHeight() const
 {

-    wxCHECK_MSG( Ok(), -1, _T("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, _T("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, _T("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, _T("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(), _T("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;
 }
 
     M_BMPDATA->m_mask = mask;
 }
 

-bool wxBitmap::SaveFile( const wxString &name, int type, wxPalette *WXUNUSED(palette) )
+bool wxBitmap::CopyFromIcon(const wxIcon& icon)

 {
 {

-    wxCHECK_MSG( Ok(), FALSE, _T("invalid bitmap") );
-
-    if (type == wxBITMAP_TYPE_PNG)
-    {
-        wxImage image( *this );
-       if (image.Ok()) return image.SaveFile( name, type );
-    }
-
-    return FALSE;
+    *this = icon;
+    return IsOk();

 }
 
 }
 

-bool wxBitmap::LoadFile( const wxString &name, int type )
+wxBitmap wxBitmap::GetSubBitmap( const wxRect& rect) const

 {
 {

-    UnRef();
+    wxBitmap ret;

 
 

-    if (!wxFileExists(name)) return FALSE;
+    wxCHECK_MSG(IsOk(), ret, wxT("invalid bitmap"));

 
 

-    if (type == wxBITMAP_TYPE_XPM)
-    {
-        m_refData = new wxBitmapRefData();
+    const int w = rect.width;
+    const int h = rect.height;
+    const wxBitmapRefData* bmpData = M_BMPDATA;

 
 

-        GdkBitmap *mask = (GdkBitmap*) NULL;
-        GdkWindow *parent = (GdkWindow*) &gdk_root_parent;
+    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"));

 
 

-        M_BMPDATA->m_pixmap = gdk_pixmap_create_from_xpm( parent, &mask, NULL, name.fn_str() );
+    wxBitmapRefData * const newRef = new wxBitmapRefData(w, h, bmpData->m_bpp);
+    ret.m_refData = newRef;

 
 

-        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 = gdk_window_get_visual( parent )->depth;
+    if (bmpData->m_pixbuf)
+    {
+        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);

     }
     }

-    else if (type == wxBITMAP_TYPE_PNG)
+    if (bmpData->m_pixmap)

     {
     {

-        wxImage image;
-        image.LoadFile( name, type );
-        if (image.Ok()) *this = image.ConvertToBitmap();
+        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);

     }
     }

-    else if (type == wxBITMAP_TYPE_BMP)
+    if (bmpData->m_mask && bmpData->m_mask->m_bitmap)

     {
     {

-        wxImage image;
-        image.LoadFile( name, type );
-        if (image.Ok()) *this = image.ConvertToBitmap();
+        GdkPixmap* sub_mask = gdk_pixmap_new(bmpData->m_mask->m_bitmap, w, h, 1);
+        newRef->m_mask = new wxMask;
+        newRef->m_mask->m_bitmap = sub_mask;
+        GdkGC* gc = gdk_gc_new(sub_mask);
+        gdk_draw_drawable(
+            sub_mask, gc, bmpData->m_mask->m_bitmap, rect.x, rect.y, 0, 0, w, h);
+        g_object_unref(gc);

     }
     }

+
+    return ret;
+}
+
+bool wxBitmap::SaveFile( const wxString &name, wxBitmapType type, const wxPalette *WXUNUSED(palette) ) const
+{
+    wxCHECK_MSG( IsOk(), false, wxT("invalid bitmap") );
+
+#if wxUSE_IMAGE
+    wxImage image = ConvertToImage();
+    if (image.IsOk() && image.SaveFile(name, type))
+        return true;
+#endif
+    const char* type_name = NULL;
+    switch (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 type_name &&
+        gdk_pixbuf_save(GetPixbuf(), name.fn_str(), type_name, NULL, NULL);
+}
+
+bool wxBitmap::LoadFile( const wxString &name, wxBitmapType type )
+{
+#if wxUSE_IMAGE
+    wxImage image;
+    if (image.LoadFile(name, type) && image.IsOk())
+        *this = wxBitmap(image);

     else
     else

-        return FALSE;
+#endif
+    {
+        wxUnusedVar(type); // The type is detected automatically by GDK.
+
+        UnRef();
+        GdkPixbuf* pixbuf = gdk_pixbuf_new_from_file(name.fn_str(), NULL);
+        if (pixbuf)
+            SetPixbuf(pixbuf);
+    }

 
 

-    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;
 }
 
 void wxBitmap::SetPixmap( GdkPixmap *pixmap )
 {
     M_BMPDATA->m_bpp = depth;
 }
 
 void wxBitmap::SetPixmap( GdkPixmap *pixmap )
 {

-    if (!m_refData) m_refData = new wxBitmapRefData();
+    UnRef();
+
+    if (!pixmap)
+        return;

 
 

-    M_BMPDATA->m_pixmap = pixmap;
+    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, _T("invalid bitmap") );
+    wxCHECK_MSG( IsOk(), NULL, wxT("invalid bitmap") );

 
 

-    return M_BMPDATA->m_pixmap;
+    wxBitmapRefData* bmpData = M_BMPDATA;
+    if (bmpData->m_pixmap)
+        return bmpData->m_pixmap;
+
+    if (bmpData->m_pixbuf)
+    {
+        GdkPixmap** mask_pixmap = NULL;
+        if (gdk_pixbuf_get_has_alpha(bmpData->m_pixbuf))
+        {
+            // make new mask from alpha
+            delete bmpData->m_mask;
+            bmpData->m_mask = new wxMask;
+            mask_pixmap = &bmpData->m_mask->m_bitmap;
+        }
+        gdk_pixbuf_render_pixmap_and_mask(
+            bmpData->m_pixbuf, &bmpData->m_pixmap, mask_pixmap, 128);
+    }
+    else
+    {
+        bmpData->m_pixmap = gdk_pixmap_new(wxGetRootWindow()->window,
+            bmpData->m_width, bmpData->m_height, bmpData->m_bpp == 1 ? 1 : -1);
+    }
+    return bmpData->m_pixmap;
+}
+
+bool wxBitmap::HasPixmap() const
+{
+    wxCHECK_MSG( IsOk(), false, wxT("invalid bitmap") );
+
+    return M_BMPDATA->m_pixmap != NULL;
+}
+
+GdkPixbuf *wxBitmap::GetPixbuf() const
+{
+    wxCHECK_MSG( IsOk(), NULL, wxT("invalid bitmap") );
+
+    wxBitmapRefData* bmpData = M_BMPDATA;
+    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->m_bitmap;
+    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;
+}
+
+bool wxBitmap::HasPixbuf() const
+{
+    wxCHECK_MSG( IsOk(), false, wxT("invalid bitmap") );
+
+    return M_BMPDATA->m_pixbuf != NULL;
+}
+
+void wxBitmap::SetPixbuf(GdkPixbuf* pixbuf)
+{
+    UnRef();
+
+    if (!pixbuf)
+        return;
+
+    int depth = -1;
+    if (gdk_pixbuf_get_has_alpha(pixbuf))
+        depth = 32;
+    m_refData = new wxBitmapRefData(
+        gdk_pixbuf_get_width(pixbuf), gdk_pixbuf_get_height(pixbuf), depth);
+
+    M_BMPDATA->m_pixbuf = pixbuf;
+}
+
+void wxBitmap::PurgeOtherRepresentations(wxBitmap::Representation keep)
+{
+    if (keep == Pixmap && HasPixbuf())
+    {
+        g_object_unref (M_BMPDATA->m_pixbuf);
+        M_BMPDATA->m_pixbuf = NULL;
+    }
+    if (keep == Pixbuf && HasPixmap())
+    {
+        g_object_unref (M_BMPDATA->m_pixmap);
+        M_BMPDATA->m_pixmap = NULL;
+    }
+}
+
+#ifdef wxHAS_RAW_BITMAP
+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)) )
+    {
+        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;

 }
 
 }
 

-GdkBitmap *wxBitmap::GetBitmap() const
+void wxBitmap::UngetRawData(wxPixelDataBase& WXUNUSED(data))

 {
 {

-    wxCHECK_MSG( Ok(), (GdkBitmap *) NULL, _T("invalid bitmap") );
+}
+#endif // wxHAS_RAW_BITMAP

 
 

-    return M_BMPDATA->m_bitmap;
+bool wxBitmap::HasAlpha() const
+{
+    const wxBitmapRefData* bmpData = M_BMPDATA;
+    return bmpData && (bmpData->m_alphaRequested ||
+        (bmpData->m_pixbuf && gdk_pixbuf_get_has_alpha(bmpData->m_pixbuf)));
+}
+
+wxGDIRefData* wxBitmap::CreateGDIRefData() const
+{
+    return new wxBitmapRefData(0, 0, 0);
+}
+
+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);
+    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);
+    }
+    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

 }
 }