Work around "possibly uninitialized variable" warning in wxFileName.

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

diff --git a/src/gtk/bitmap.cpp b/src/gtk/bitmap.cpp
index 7b944d6738b3a26ee22db5965168c0eba1f44ffe..c296558642e3163dda0ba3766da33ecb6acb5714 100644 (file)
--- a/src/gtk/bitmap.cpp
+++ b/src/gtk/bitmap.cpp
@@ -13,62 +13,107 @@
 #include "wx/bitmap.h"
 
 #ifndef WX_PRECOMP
 #include "wx/bitmap.h"
 
 #ifndef WX_PRECOMP

-    #include "wx/app.h"
-    #include "wx/palette.h"

     #include "wx/icon.h"
     #include "wx/icon.h"

-    #include "wx/math.h"

     #include "wx/image.h"
     #include "wx/image.h"

+    #include "wx/colour.h"

 #endif
 
 #include "wx/rawbmp.h"
 
 #endif
 
 #include "wx/rawbmp.h"
 

+#include "wx/gtk/private/object.h"
+

 #include <gtk/gtk.h>
 
 #include <gtk/gtk.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);
+extern GtkWidget *wxGetRootWindow();

 
 

-//-----------------------------------------------------------------------------
-// data
-//-----------------------------------------------------------------------------
+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];
+            }
+    }
+}

 
 

-extern GtkWidget *wxGetRootWindow();
+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 )
 {

-    m_bitmap = (GdkBitmap *) NULL;
-    Create( bitmap, colour );
+    m_bitmap = NULL;
+    InitFromColour(bitmap, colour);

 }
 
 #if wxUSE_PALETTE
 wxMask::wxMask( const wxBitmap& bitmap, int paletteIndex )
 {
 }
 
 #if wxUSE_PALETTE
 wxMask::wxMask( const wxBitmap& bitmap, int paletteIndex )
 {

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

     Create( bitmap, paletteIndex );
 }
 #endif // wxUSE_PALETTE
 
 wxMask::wxMask( const wxBitmap& bitmap )
 {
     Create( bitmap, paletteIndex );
 }
 #endif // wxUSE_PALETTE
 
 wxMask::wxMask( const wxBitmap& bitmap )
 {

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

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


@@ -77,115 +122,77 @@ wxMask::~wxMask()
         g_object_unref (m_bitmap);
 }
 
         g_object_unref (m_bitmap);
 }
 

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

 {
     if (m_bitmap)
     {
         g_object_unref (m_bitmap);
 {
     if (m_bitmap)
     {
         g_object_unref (m_bitmap);

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

     }
     }

+}

 
 

-    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.pixel = 1;
-    gdk_gc_set_foreground( gc, &color );
-    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();
+bool wxMask::InitFromColour(const wxBitmap& bitmap, const wxColour& colour)
+{
+    const int w = bitmap.GetWidth();
+    const int h = bitmap.GetHeight();

 
 

-    GdkVisual *visual = wxTheApp->GetGdkVisual();
+    // create mask as XBM format bitmap

 
 

-    int bpp = visual->depth;
-    if ((bpp == 16) && (visual->red_mask != 0xf800))
-        bpp = 15;
-    if (bpp == 15)
-    {
-        red = red & 0xf8;
-        green = green & 0xf8;
-        blue = blue & 0xf8;
-    }
-    else if (bpp == 16)
+    // 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 & 0xf8;
-        green = green & 0xfc;
-        blue = blue & 0xf8;
-    }
-    else if (bpp == 12)
-    {
-        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.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);

     }
     }

-
-    g_object_unref (gc);
-
+    m_bitmap = gdk_bitmap_create_from_data(wxGetRootWindow()->window, (char*)out, w, h);
+    delete[] out;

     return true;
 }
 
     return true;
 }
 

-#if wxUSE_PALETTE
-bool wxMask::Create( const wxBitmap& bitmap, int paletteIndex )
+bool wxMask::InitFromMonoBitmap(const wxBitmap& bitmap)

 {
 {

-    unsigned char r,g,b;
-    wxPalette *pal = bitmap.GetPalette();
-
-    wxCHECK_MSG( pal, false, wxT("Cannot create mask from bitmap without palette") );
-
-    pal->GetRGB(paletteIndex, &r, &g, &b);
-
-    return Create(bitmap, wxColour(r, g, b));
-}
-#endif // wxUSE_PALETTE
-
-bool wxMask::Create( const wxBitmap& bitmap )
-{
-    if (m_bitmap)
-    {
-        g_object_unref (m_bitmap);
-        m_bitmap = (GdkBitmap*) NULL;
-    }
-
-    if (!bitmap.Ok()) return false;
+    if (!bitmap.IsOk()) return false;

 
     wxCHECK_MSG( bitmap.GetDepth() == 1, false, wxT("Cannot create mask from colour bitmap") );
 
 
     wxCHECK_MSG( bitmap.GetDepth() == 1, false, wxT("Cannot create mask from colour bitmap") );
 


@@ -193,11 +200,9 @@ bool wxMask::Create( const wxBitmap& bitmap )
 
     if (!m_bitmap) return false;
 
 
     if (!m_bitmap) return false;
 

-    GdkGC *gc = gdk_gc_new( m_bitmap );
-
-    gdk_wx_draw_bitmap( m_bitmap, gc, bitmap.GetPixmap(), 0, 0, 0, 0, bitmap.GetWidth(), bitmap.GetHeight() );
-
-    g_object_unref (gc);
+    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;
 }
 
     return true;
 }


@@ -208,14 +213,16 @@ GdkBitmap *wxMask::GetBitmap() const
 }
 
 //-----------------------------------------------------------------------------
 }
 
 //-----------------------------------------------------------------------------

-// 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;

 
     GdkPixmap      *m_pixmap;
     GdkPixbuf      *m_pixbuf;
 
     GdkPixmap      *m_pixmap;
     GdkPixbuf      *m_pixbuf;


@@ -223,18 +230,20 @@ public:
     int             m_width;
     int             m_height;
     int             m_bpp;
     int             m_width;
     int             m_height;
     int             m_bpp;

-    wxPalette      *m_palette;
+    bool m_alphaRequested;

 };
 
 };
 

-wxBitmapRefData::wxBitmapRefData()
+wxBitmapRefData::wxBitmapRefData(int width, int height, int depth)

 {
 {

-    m_pixmap = (GdkPixmap *) NULL;
-    m_pixbuf = (GdkPixbuf *) 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()


@@ -244,466 +253,186 @@ wxBitmapRefData::~wxBitmapRefData()
     if (m_pixbuf)
         g_object_unref (m_pixbuf);
     delete m_mask;
     if (m_pixbuf)
         g_object_unref (m_pixbuf);
     delete m_mask;

-#if wxUSE_PALETTE
-    delete m_palette;
-#endif // wxUSE_PALETTE
+}
+
+bool wxBitmapRefData::IsOk() const
+{
+    return m_bpp != 0;

 }
 
 }
 

+//-----------------------------------------------------------------------------
+// wxBitmap

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

-#define M_BMPDATA wx_static_cast(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( int width, int height, int depth )
+wxBitmap::wxBitmap(const wxString &filename, wxBitmapType type)

 {
 {

-    Create( width, height, depth );
+    LoadFile(filename, type);

 }
 
 }
 

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

 {
 {

-    UnRef();
-
-    if ( width <= 0 || height <= 0 )
+    wxASSERT(depth == 1);
+    if (width > 0 && height > 0 && depth == 1)

     {
     {

-        return false;
-    }
-
-    if (depth == 32)
-    {
-        SetPixbuf(gdk_pixbuf_new(GDK_COLORSPACE_RGB, true, 8, width, height));
-        M_BMPDATA->m_bpp = 32;
-    }
-    else
-    {
-        if (depth != 1)
-        {
-            const GdkVisual* visual = wxTheApp->GetGdkVisual();
-            if (depth == -1)
-                depth = visual->depth;
-
-            wxCHECK_MSG(depth == visual->depth, false, wxT("invalid bitmap depth"));
-        }
-
-        SetPixmap(gdk_pixmap_new(wxGetRootWindow()->window, width, height, depth));
+        SetPixmap(gdk_bitmap_create_from_data(wxGetRootWindow()->window, bits, width, height));

     }
     }

-
-    return Ok();

 }
 
 }
 

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

 {
 {

-    UnRef();
-
-    wxCHECK_MSG( bits != NULL, false, wxT("invalid bitmap data") );
+    wxCHECK2_MSG(bits != NULL, return, wxT("invalid bitmap data"));

 
 

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

 
 

-    wxCHECK_MSG( M_BMPDATA->m_pixmap, false, wxT("couldn't create pixmap") );
-
-    if (mask)
+    if (M_BMPDATA->m_pixmap != NULL && mask != NULL)

     {
         M_BMPDATA->m_mask = new wxMask;
         M_BMPDATA->m_mask->m_bitmap = mask;
     }
     {
         M_BMPDATA->m_mask = new wxMask;
         M_BMPDATA->m_mask->m_bitmap = mask;
     }

-
-    return true;

 }
 
 }
 

-wxBitmap wxBitmap::Rescale( int clipx, int clipy, int clipwidth, int clipheight, int newx, int newy )
+wxBitmap::~wxBitmap()

 {
 {

-    wxBitmap bmp;
-
-    wxCHECK_MSG(Ok(), bmp, 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);
-
-    if (HasPixbuf())
-    {
-        bmp.SetDepth(GetDepth());
-        bmp.SetPixbuf(gdk_pixbuf_new(GDK_COLORSPACE_RGB,
-                                     gdk_pixbuf_get_has_alpha(GetPixbuf()),
-                                     8, width, height));
-        gdk_pixbuf_scale(GetPixbuf(), bmp.GetPixbuf(),
-                         0, 0, width, height,
-                         clipx, clipy,
-                         (double)newx/GetWidth(), (double)newy/GetHeight(),
-                         GDK_INTERP_BILINEAR);
-    }
-    else
-    {
-        GdkImage* img = gdk_image_get(GetPixmap(), 0, 0, GetWidth(), GetHeight());
-
-        wxCHECK_MSG(img, bmp, wxT("couldn't create image"));
-
-        GdkGC *gc = NULL;
-        GdkPixmap *dstpix = NULL;
-        char *dst = NULL;
-        long dstbyteperline = 0;
-
-        if (GetDepth() != 1)
-        {
-            GdkVisual *visual = gdk_drawable_get_visual( GetPixmap() );
-            if (visual == NULL)
-                visual = wxTheApp->GetGdkVisual();
-
-            bmp = wxBitmap(width, height, visual->depth);
-            dstpix = bmp.GetPixmap();
-            gc = gdk_gc_new( dstpix );
-        }
-        else
-        {
-            dstbyteperline = (width + 7) / 8;
-            dst = (char*) malloc(dstbyteperline*height);
-        }
-
-        // be careful to use the right scaling factor
-        float scx = (float)M_BMPDATA->m_width/(float)newx;
-        float scy = (float)M_BMPDATA->m_height/(float)newy;
-        // prepare accel-tables
-        int *tablex = (int *)calloc(width,sizeof(int));
-        int *tabley = (int *)calloc(height,sizeof(int));
-
-        // accel table filled with clipped values
-        for (int x = 0; x < width; x++)
-            tablex[x] = (int) (scx * (x+clipx));
-        for (int y = 0; y < height; y++)
-            tabley[y] = (int) (scy * (y+clipy));
-
-        // Main rescaling routine starts here
-        for (int h = 0; h < height; h++)
-        {
-            char outbyte = 0;
-            int old_x = -1;
-            guint32 old_pixval = 0;
-
-            for (int w = 0; w < width; w++)
-            {
-                guint32 pixval;
-                int x = tablex[w];
-                if (x == old_x)
-                    pixval = old_pixval;
-                else
-                {
-                    pixval = gdk_image_get_pixel( img, x, tabley[h] );
-                    old_pixval = pixval;
-                    old_x = x;
-                }
-
-                if ( dst )
-                {
-                    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);
-                }
-            }
-
-            // do not forget the last byte
-            if ( dst && (width % 8 != 0) )
-                dst[h*dstbyteperline+width/8] = outbyte;
-        }
-
-        g_object_unref (img);
-        if (gc) g_object_unref (gc);
-
-        if ( dst )
-        {
-            bmp = wxBitmap( (const char *)dst, width, height, 1 );
-            free( dst );
-        }
-
-        if (GetMask())
-        {
-            dstbyteperline = (width + 7) / 8;
-            dst = (char*) malloc(dstbyteperline*height);
-            img = gdk_image_get( GetMask()->GetBitmap(), 0, 0, GetWidth(), GetHeight() );
-
-            for (int h = 0; h < height; h++)
-            {
-                char outbyte = 0;
-                int old_x = -1;
-                guint32 old_pixval = 0;
-
-                for (int w = 0; w < width; w++)
-                {
-                    guint32 pixval;
-                    int x = tablex[w];
-                    if (x == old_x)
-                        pixval = old_pixval;
-                    else
-                    {
-                        pixval = gdk_image_get_pixel( img, x, tabley[h] );
-                        old_pixval = pixval;
-                        old_x = x;
-                    }
-
-                    if (pixval)
-                    {
-                        char bit=1;
-                        char shift = bit << (w % 8);
-                        outbyte |= shift;
-                    }
-
-                    if ((w+1)%8 == 0)
-                    {
-                        dst[h*dstbyteperline+w/8] = outbyte;
-                        outbyte = 0;
-                    }
-                }
-
-                // do not forget the last byte
-                if (width % 8 != 0)
-                    dst[h*dstbyteperline+width/8] = outbyte;
-            }
-            wxMask* mask = new wxMask;
-            mask->m_bitmap = gdk_bitmap_create_from_data( wxGetRootWindow()->window, (gchar *) dst, width, height );
-            bmp.SetMask(mask);
-
-            free( dst );
-            g_object_unref (img);
-        }
-
-        free( tablex );
-        free( tabley );
-    }
+}

 
 

-    return bmp;
+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;

 }
 
 }
 

+#if wxUSE_IMAGE
+

 bool wxBitmap::CreateFromImage(const wxImage& image, int depth)
 {
     UnRef();
 
 bool wxBitmap::CreateFromImage(const wxImage& image, int depth)
 {
     UnRef();
 

-    wxCHECK_MSG( image.Ok(), false, wxT("invalid image") );
+    wxCHECK_MSG( image.IsOk(), false, wxT("invalid image") );

     wxCHECK_MSG( depth == -1 || depth == 1, false, wxT("invalid bitmap depth") );
 
     if (image.GetWidth() <= 0 || image.GetHeight() <= 0)
         return false;
 
     wxCHECK_MSG( depth == -1 || depth == 1, false, wxT("invalid bitmap depth") );
 
     if (image.GetWidth() <= 0 || image.GetHeight() <= 0)
         return false;
 

-    if (depth == 1)
-        return CreateFromImageAsBitmap(image);
-
-    if (image.HasAlpha())
+    // create pixbuf if image has alpha and requested depth is compatible
+    if (image.HasAlpha() && (depth == -1 || depth == 32))

         return CreateFromImageAsPixbuf(image);
 
         return CreateFromImageAsPixbuf(image);
 

-    return CreateFromImageAsPixmap(image);
+    // otherwise create pixmap, if alpha is present it will be converted to mask
+    return CreateFromImageAsPixmap(image, depth);

 }
 
 }
 

-// conversion to mono bitmap:
-bool wxBitmap::CreateFromImageAsBitmap(const wxImage& img)
+bool wxBitmap::CreateFromImageAsPixmap(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();
-
-    SetPixmap( gdk_pixmap_new( wxGetRootWindow()->window, width, height, 1 ) );
-
-    // Create picture image
-
-    GdkGC* data_gc = gdk_gc_new(M_BMPDATA->m_pixmap);
-    GdkColor color;
-    color.pixel = 1;
-    gdk_gc_set_foreground(data_gc, &color);
-    gdk_draw_rectangle(M_BMPDATA->m_pixmap, data_gc, true, 0, 0, width, height);
-    GdkImage* data_image = gdk_drawable_get_image(M_BMPDATA->m_pixmap, 0, 0, width, height);
-
-    // Create mask image
-
-    GdkImage *mask_image = (GdkImage*) NULL;
-    GdkGC* mask_gc = NULL;
-
-    if (image.HasMask())
+    const int w = image.GetWidth();
+    const int h = image.GetHeight();
+    if (depth == 1)

     {
     {

-        wxMask* mask = new wxMask;
-        mask->m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, width, height, 1 );
-        mask_gc = gdk_gc_new(mask->m_bitmap);
-        gdk_gc_set_foreground(mask_gc, &color);
-        gdk_draw_rectangle(mask->m_bitmap, mask_gc, true, 0, 0, width, height);
-        mask_image = gdk_drawable_get_image(mask->m_bitmap, 0, 0, width, height);
+        // 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;

 
 

-        SetMask( mask );
+        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);

     }
 
     }
 

-    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++)
+    const wxByte* alpha = image.GetAlpha();
+    if (alpha != NULL || image.HasMask())

     {
     {

-        for (int x = 0; x < width; x++)
+        // create mask as XBM format bitmap
+
+        const size_t out_size = size_t((w + 7) / 8) * unsigned(h);
+        wxByte* out = new wxByte[out_size];
+        memset(out, 0xff, out_size);
+        unsigned bit_index = 0;
+        if (alpha != NULL)

         {
         {

-            int r = data[index];
-            index++;
-            int g = data[index];
-            index++;
-            int b = data[index];
-            index++;
-
-            if (mask_image != NULL)
+            for (int y = 0; y < h; y++)

             {
             {

-                if ((r == r_mask) && (b == b_mask) && (g == g_mask))
-                    gdk_image_put_pixel( mask_image, x, y, 0 );
+                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;

             }
             }

-
-            if ((r == 255) && (b == 255) && (g == 255))
-                gdk_image_put_pixel( data_image, x, y, 0 );
-
-        } // for
-    }  // for
-
-    // Blit picture
-
-    gdk_draw_image( GetPixmap(), data_gc, data_image, 0, 0, 0, 0, width, height );
-
-    g_object_unref (data_image);
-    g_object_unref (data_gc);
-
-    // Blit mask
-
-    if (mask_image != NULL)
-    {
-        gdk_draw_image( GetMask()->GetBitmap(), mask_gc, mask_image, 0, 0, 0, 0, width, height );
-
-        g_object_unref (mask_image);
-        g_object_unref (mask_gc);
-    }
-
-    return true;
-}
-
-// conversion to colour bitmap:
-bool wxBitmap::CreateFromImageAsPixmap(const wxImage& image)
-{
-    // alpha is handled by CreateFromImageAsPixbuf
-    wxASSERT(!image.HasAlpha());
-
-    int width = image.GetWidth();
-    int height = image.GetHeight();
-
-    SetPixmap( gdk_pixmap_new( wxGetRootWindow()->window, width, height, -1 ) );
-
-    GdkGC *gc = gdk_gc_new( GetPixmap() );
-
-    gdk_draw_rgb_image( GetPixmap(),
-                        gc,
-                        0, 0,
-                        width, height,
-                        GDK_RGB_DITHER_NONE,
-                        image.GetData(),
-                        width*3 );
-
-    g_object_unref (gc);
-
-    // Create mask image
-
-    if (!image.HasMask())
-        return true;
-
-    wxMask* mask = new wxMask;
-    mask->m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, width, height, 1 );
-    GdkGC* mask_gc = gdk_gc_new(mask->m_bitmap);
-    GdkColor color;
-    color.pixel = 1;
-    gdk_gc_set_foreground(mask_gc, &color);
-    gdk_draw_rectangle(mask->m_bitmap, mask_gc, true, 0, 0, width, height);
-    GdkImage* mask_image = gdk_drawable_get_image(mask->m_bitmap, 0, 0, width, height);
-
-    SetMask( mask );
-
-    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++)
+        }
+        else

         {
         {

-            int r = data[index];
-            index++;
-            int g = data[index];
-            index++;
-            int b = data[index];
-            index++;
-
-            if ((r == r_mask) && (b == b_mask) && (g == g_mask))
-                gdk_image_put_pixel( mask_image, x, y, 0 );
-        } // for
-    }  // for
-
-    // Blit mask
-
-    gdk_draw_image( GetMask()->GetBitmap(), mask_gc, mask_image, 0, 0, 0, 0, width, height );
-
-    g_object_unref (mask_image);
-    g_object_unref (mask_gc);
-
-    return true;
+            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();

 }
 
 bool wxBitmap::CreateFromImageAsPixbuf(const wxImage& image)
 {
 }
 
 bool wxBitmap::CreateFromImageAsPixbuf(const wxImage& image)
 {

+    wxASSERT(image.HasAlpha());
+

     int width = image.GetWidth();
     int height = image.GetHeight();
 
     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( image.HasAlpha() ); // for now
-    wxASSERT( gdk_pixbuf_get_n_channels(pixbuf) == 4 );
-    wxASSERT( gdk_pixbuf_get_width(pixbuf) == width );
-    wxASSERT( gdk_pixbuf_get_height(pixbuf) == height );
-
-    SetDepth(wxTheApp->GetGdkVisual()->depth);
-    SetPixbuf(pixbuf);
-

     // 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;
+    int rowpad = gdk_pixbuf_get_rowstride(pixbuf) - 4 * width;

 
 

-    for (int y = 0; y < height; y++, out += rowinc)
+    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++, alpha++, out += 4, in += 3)
         {


@@ -719,314 +448,194 @@ bool wxBitmap::CreateFromImageAsPixbuf(const wxImage& image)
 
 wxImage wxBitmap::ConvertToImage() const
 {
 
 wxImage wxBitmap::ConvertToImage() const
 {

-    wxImage image;
-
-    wxCHECK_MSG( Ok(), wxNullImage, wxT("invalid bitmap") );
+    wxCHECK_MSG( IsOk(), wxNullImage, wxT("invalid bitmap") );

 
 

-    image.Create(GetWidth(), GetHeight());
+    const int w = GetWidth();
+    const int h = GetHeight();
+    wxImage image(w, h, false);

     unsigned char *data = image.GetData();
 
     wxCHECK_MSG(data != NULL, wxNullImage, wxT("couldn't create image") );
 
     unsigned char *data = image.GetData();
 
     wxCHECK_MSG(data != NULL, wxNullImage, wxT("couldn't create image") );
 

+    // prefer pixbuf if available, it will preserve alpha and should be quicker

     if (HasPixbuf())
     {
         GdkPixbuf *pixbuf = GetPixbuf();
     if (HasPixbuf())
     {
         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* 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;
         unsigned char *out = data;

-        int rowinc = gdk_pixbuf_get_rowstride(pixbuf) - 4 * w;
+        const int inc = 3 + int(alpha != NULL);
+        const int rowpad = gdk_pixbuf_get_rowstride(pixbuf) - inc * w;

 
 

-        for (int y = 0; y < h; y++, in += rowinc)
+        for (int y = 0; y < h; y++, in += rowpad)

         {
         {

-            for (int x = 0; x < w; x++, in += 4, out += 3, alpha++)
+            for (int x = 0; x < w; x++, in += inc, out += 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];

-                *alpha = in[3];
+                if (alpha != NULL)
+                    *alpha++ = in[3];

             }
         }
     }
     else
     {
             }
         }
     }
     else
     {

-        // 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
-        {
-            wxFAIL_MSG( wxT("Ill-formed bitmap") );
-        }
-
-        wxCHECK_MSG( gdk_image, wxNullImage, wxT("couldn't create image") );
-
-        GdkImage *gdk_image_mask = (GdkImage*) NULL;
-        if (GetMask())
+        GdkPixmap* pixmap = GetPixmap();
+        GdkPixmap* pixmap_invert = NULL;
+        if (GetDepth() == 1)

         {
         {

-            gdk_image_mask = gdk_image_get( GetMask()->GetBitmap(),
-                                            0, 0,
-                                            GetWidth(), GetHeight() );
-
-            image.SetMaskColour( MASK_RED, MASK_GREEN, MASK_BLUE );
+            // 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);

 
 

-        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;
+        gdk_pixbuf_get_from_drawable(pixbuf, pixmap, NULL, 0, 0, 0, 0, w, h);

 
 

-        if (GetDepth() != 1)
-        {
-            GdkVisual *visual = gdk_drawable_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);
-        }
-        else
-        {
-            bpp = 1;
-        }
-
-
-        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()->GetBitmap(), 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 (pixel == 0)
-                    {
-                        data[pos]   = 0;
-                        data[pos+1] = 0;
-                        data[pos+2] = 0;
-                    }
-                    else
-                    {
-                        data[pos]   = 255;
-                        data[pos+1] = 255;
-                        data[pos+2] = 255;
-                    }
-                }
-                else if (use_shift)
-                {
-                    data[pos] =   (pixel >> red_shift_right)   << red_shift_left;
-                    data[pos+1] = (pixel >> green_shift_right) << green_shift_left;
-                    data[pos+2] = (pixel >> blue_shift_right)  << blue_shift_left;
-                }
-                else if (cmap->colors)
-                {
-                    data[pos] =   cmap->colors[pixel].red   >> 8;
-                    data[pos+1] = cmap->colors[pixel].green >> 8;
-                    data[pos+2] = cmap->colors[pixel].blue  >> 8;
-                }
-                else
+                if (gdk_image_get_pixel(image_mask, x, y) == 0)

                 {
                 {

-                    wxFAIL_MSG( wxT("Image conversion failed. Unknown visual type.") );
+                    data[0] = MASK_RED;
+                    data[1] = MASK_GREEN;
+                    data[2] = MASK_BLUE;

                 }
                 }

-
-                if (gdk_image_mask)
+                else if (data[0] == MASK_RED && data[1] == MASK_GREEN && data[2] == MASK_BLUE)

                 {
                 {

-                    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;
-                    }
+                    // we have to fudge the colour a bit to prevent
+                    // this pixel from appearing transparent
+                    data[2] = MASK_BLUE_REPLACEMENT;

                 }
                 }

-
-                pos += 3;

             }
         }
             }
         }

-
-        g_object_unref (gdk_image);
-        if (gdk_image_mask) g_object_unref (gdk_image_mask);
+        g_object_unref(image_mask);

     }
 
     return image;
 }
 
     }
 
     return image;
 }
 

-wxBitmap::wxBitmap( const wxString &filename, wxBitmapType type )
-{
-    LoadFile( filename, type );
-}
-
-wxBitmap::wxBitmap( const char bits[], int width, int height, int WXUNUSED(depth))
-{
-    if ( width > 0 && height > 0 )
-    {
-        SetPixmap(gdk_bitmap_create_from_data(wxGetRootWindow()->window, bits, width, height));
-
-        wxASSERT_MSG( M_BMPDATA->m_pixmap, wxT("couldn't create bitmap") );
-    }
-}
-
-wxBitmap::~wxBitmap()
-{
-}
-
-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) &&
-           (
-              M_BMPDATA->m_pixbuf ||
-              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 Ok();
+    return IsOk();

 }
 
 wxBitmap wxBitmap::GetSubBitmap( const wxRect& rect) const
 {
     wxBitmap ret;
 
 }
 
 wxBitmap wxBitmap::GetSubBitmap( const wxRect& rect) const
 {
     wxBitmap ret;
 

-    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),
-                 ret, wxT("invalid bitmap or bitmap region") );
+    wxCHECK_MSG(IsOk(), ret, wxT("invalid bitmap"));

 
 

-    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* newRef = new wxBitmapRefData(*bmpData);
+    ret.m_refData = newRef;
+    newRef->m_width = w;
+    newRef->m_height = h;
+
+    if (bmpData->m_pixbuf)

     {
     {

-        GdkPixbuf *pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB,
-                                           gdk_pixbuf_get_has_alpha(GetPixbuf()),
-                                           8, rect.width, rect.height);
-        ret.SetPixbuf(pixbuf);
-        ret.SetDepth(M_BMPDATA->m_bpp);
-        gdk_pixbuf_copy_area(GetPixbuf(),
-                             rect.x, rect.y, rect.width, rect.height,
-                             pixbuf, 0, 0);
+        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 (bmpData->m_pixmap)

     {
     {

-        ret = wxBitmap(rect.width, rect.height, M_BMPDATA->m_bpp);
-        if (M_BMPDATA->m_bpp != 1)
-        {
-            GdkGC *gc = gdk_gc_new( ret.GetPixmap() );
-            gdk_draw_drawable( ret.GetPixmap(), gc, GetPixmap(), rect.x, rect.y, 0, 0, rect.width, rect.height );
-            g_object_unref (gc);
-        }
-        else
-        {
-            GdkGC *gc = gdk_gc_new( ret.GetPixmap() );
-            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.GetPixmap(), gc, GetPixmap(), rect.x, rect.y, 0, 0, rect.width, rect.height );
-            g_object_unref (gc);
-        }
+        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);

     }
     }

-
-    if (GetMask())
+    newRef->m_mask = NULL;
+    if (bmpData->m_mask && bmpData->m_mask->m_bitmap)

     {
     {

-        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 );
-        g_object_unref (gc);
-
-        ret.SetMask( mask );
+        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;
     }
 
     return ret;


@@ -1034,45 +643,48 @@ wxBitmap wxBitmap::GetSubBitmap( const wxRect& rect) const
 
 bool wxBitmap::SaveFile( const wxString &name, wxBitmapType type, const wxPalette *WXUNUSED(palette) ) const
 {
 
 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();
     wxImage image = ConvertToImage();

-    return image.Ok() && image.SaveFile(name, type);
+    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 )
 {
 }
 
 bool wxBitmap::LoadFile( const wxString &name, wxBitmapType type )
 {

-    UnRef();
-
-    if (type == wxBITMAP_TYPE_XPM)
-    {
-        GdkBitmap *mask = (GdkBitmap*) NULL;
-        SetPixmap(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;
-        }
-    }
-    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())
-            *this = wxBitmap(image);
+        UnRef();
+        GdkPixbuf* pixbuf = gdk_pixbuf_new_from_file(name.fn_str(), NULL);
+        if (pixbuf)
+            SetPixbuf(pixbuf);

     }
 
     }
 

-    return Ok();
+    return IsOk();

 }
 
 #if wxUSE_PALETTE
 wxPalette *wxBitmap::GetPalette() const
 {
 }
 
 #if wxUSE_PALETTE
 wxPalette *wxBitmap::GetPalette() const
 {

-    if (!Ok())
-        return (wxPalette *) NULL;
-
-    return M_BMPDATA->m_palette;
+    return NULL;

 }
 
 void wxBitmap::SetPalette(const wxPalette& WXUNUSED(palette))
 }
 
 void wxBitmap::SetPalette(const wxPalette& WXUNUSED(palette))


@@ -1083,131 +695,116 @@ void wxBitmap::SetPalette(const wxPalette& WXUNUSED(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;
-
-    wxASSERT(M_BMPDATA->m_pixmap == NULL);
-    M_BMPDATA->m_pixmap = pixmap;
-    gdk_drawable_get_size(pixmap, &M_BMPDATA->m_width, &M_BMPDATA->m_height);
-    M_BMPDATA->m_bpp = gdk_drawable_get_depth(pixmap);
-    PurgeOtherRepresentations(Pixmap);
+    UnRef();
+
+    if (!pixmap)
+        return;
+
+    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") );

 
 

-    // create the pixmap on the fly if we use Pixbuf representation:
-    if (M_BMPDATA->m_pixmap == NULL)
+    wxBitmapRefData* bmpData = M_BMPDATA;
+    if (bmpData->m_pixmap)
+        return bmpData->m_pixmap;
+
+    if (bmpData->m_pixbuf)

     {
     {

-        delete M_BMPDATA->m_mask;
-        M_BMPDATA->m_mask = new wxMask;
-        gdk_pixbuf_render_pixmap_and_mask(M_BMPDATA->m_pixbuf,
-                                          &M_BMPDATA->m_pixmap,
-                                          &M_BMPDATA->m_mask->m_bitmap,
-                                          128 /*threshold*/);
+        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);

     }
     }

-
-    return M_BMPDATA->m_pixmap;
+    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
 {
 }
 
 bool wxBitmap::HasPixmap() const
 {

-    wxCHECK_MSG( Ok(), false, wxT("invalid bitmap") );
+    wxCHECK_MSG( IsOk(), false, wxT("invalid bitmap") );

 
     return M_BMPDATA->m_pixmap != NULL;
 }
 
 GdkPixbuf *wxBitmap::GetPixbuf() const
 {
 
     return M_BMPDATA->m_pixmap != NULL;
 }
 
 GdkPixbuf *wxBitmap::GetPixbuf() const
 {

-    wxCHECK_MSG( Ok(), NULL, wxT("invalid bitmap") );
-
-    if (M_BMPDATA->m_pixbuf == NULL)
-    {
-        int width = GetWidth();
-        int height = GetHeight();
-
-        GdkPixbuf *pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB,
-                                           GetMask() != NULL,
-                                           8, width, height);
-        M_BMPDATA->m_pixbuf =
-            gdk_pixbuf_get_from_drawable(pixbuf, M_BMPDATA->m_pixmap, NULL,
-                                         0, 0, 0, 0, width, height);
-
-        // apply the mask to created pixbuf:
-        if (M_BMPDATA->m_pixbuf && M_BMPDATA->m_mask)
-        {
-            GdkPixbuf *pmask =
-                gdk_pixbuf_get_from_drawable(NULL,
-                                             M_BMPDATA->m_mask->GetBitmap(),
-                                             NULL,
-                                             0, 0, 0, 0, width, height);
-            if (pmask)
-            {
-                guchar *bmp = gdk_pixbuf_get_pixels(pixbuf);
-                guchar *mask = gdk_pixbuf_get_pixels(pmask);
-                int bmprowinc = gdk_pixbuf_get_rowstride(pixbuf) - 4 * width;
-                int maskrowinc = gdk_pixbuf_get_rowstride(pmask) - 3 * width;
-
-                for (int y = 0; y < height;
-                     y++, bmp += bmprowinc, mask += maskrowinc)
-                {
-                    for (int x = 0; x < width; x++, bmp += 4, mask += 3)
-                    {
-                        if (mask[0] == 0 /*black pixel*/)
-                            bmp[3] = 0;
-                    }
-                }
-
-                g_object_unref (pmask);
-            }
-        }
-    }
-
-    return M_BMPDATA->m_pixbuf;
+    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
 {
 }
 
 bool wxBitmap::HasPixbuf() const
 {

-    wxCHECK_MSG( Ok(), false, wxT("invalid bitmap") );
+    wxCHECK_MSG( IsOk(), false, wxT("invalid bitmap") );

 
     return M_BMPDATA->m_pixbuf != NULL;
 }
 
 
     return M_BMPDATA->m_pixbuf != NULL;
 }
 

-void wxBitmap::SetPixbuf( GdkPixbuf *pixbuf )
+void wxBitmap::SetPixbuf(GdkPixbuf* pixbuf)

 {
 {

-    if (!m_refData)
-        m_refData = new wxBitmapRefData;
+    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);

 
 

-    wxASSERT(M_BMPDATA->m_pixbuf == NULL);

     M_BMPDATA->m_pixbuf = pixbuf;
     M_BMPDATA->m_pixbuf = pixbuf;

-    M_BMPDATA->m_width = gdk_pixbuf_get_width(pixbuf);
-    M_BMPDATA->m_height = gdk_pixbuf_get_height(pixbuf);
-    PurgeOtherRepresentations(Pixbuf);

 }
 
 void wxBitmap::PurgeOtherRepresentations(wxBitmap::Representation keep)
 }
 
 void wxBitmap::PurgeOtherRepresentations(wxBitmap::Representation keep)


@@ -1224,85 +821,65 @@ void wxBitmap::PurgeOtherRepresentations(wxBitmap::Representation keep)
     }
 }
 
     }
 }
 

+#ifdef wxHAS_RAW_BITMAP

 void *wxBitmap::GetRawData(wxPixelDataBase& data, int bpp)
 {
 void *wxBitmap::GetRawData(wxPixelDataBase& data, int bpp)
 {

-    if (bpp != 32)
-        return NULL;
-
+    void* bits = NULL;

     GdkPixbuf *pixbuf = GetPixbuf();
     GdkPixbuf *pixbuf = GetPixbuf();

-    if (!pixbuf)
-        return NULL;
+    const bool hasAlpha = HasAlpha();

 
 

-#if 0
-    if (gdk_pixbuf_get_has_alpha( pixbuf ))
-        wxPrintf( wxT("Has alpha\n") );
-    else
-        wxPrintf( wxT("No alpha.\n") );
-#endif
-
-    data.m_height = gdk_pixbuf_get_height( pixbuf );
-    data.m_width = gdk_pixbuf_get_width( pixbuf );
-    data.m_stride = gdk_pixbuf_get_rowstride( pixbuf );
-
-    return gdk_pixbuf_get_pixels( pixbuf );
+    // 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;

 }
 
 void wxBitmap::UngetRawData(wxPixelDataBase& WXUNUSED(data))
 {
 }
 }
 
 void wxBitmap::UngetRawData(wxPixelDataBase& WXUNUSED(data))
 {
 }

-
+#endif // wxHAS_RAW_BITMAP

 
 bool wxBitmap::HasAlpha() const
 {
 
 bool wxBitmap::HasAlpha() const
 {

-    return HasPixbuf();
-}
-
-void wxBitmap::UseAlpha()
-{
-    GetPixbuf();
+    const wxBitmapRefData* bmpData = M_BMPDATA;
+    return bmpData && (bmpData->m_alphaRequested ||
+        (bmpData->m_pixbuf && gdk_pixbuf_get_has_alpha(bmpData->m_pixbuf)));

 }
 
 }
 

-//-----------------------------------------------------------------------------
-// wxBitmapHandler
-//-----------------------------------------------------------------------------
-
-IMPLEMENT_DYNAMIC_CLASS(wxBitmapHandler,wxBitmapHandlerBase)
-
-wxBitmapHandler::~wxBitmapHandler()
+wxGDIRefData* wxBitmap::CreateGDIRefData() const

 {
 {

+    return new wxBitmapRefData(0, 0, 0);

 }
 
 }
 

-bool wxBitmapHandler::Create(wxBitmap * WXUNUSED(bitmap),
-                             void * WXUNUSED(data),
-                             long WXUNUSED(type),
-                             int WXUNUSED(width),
-                             int WXUNUSED(height),
-                             int WXUNUSED(depth))
+wxGDIRefData* wxBitmap::CloneGDIRefData(const wxGDIRefData* data) const

 {
 {

-    wxFAIL_MSG( _T("not implemented") );
-
-    return false;
-}
-
-bool wxBitmapHandler::LoadFile(wxBitmap * WXUNUSED(bitmap),
-                               const wxString& WXUNUSED(name),
-                               long WXUNUSED(flags),
-                               int WXUNUSED(desiredWidth),
-                               int WXUNUSED(desiredHeight))
-{
-    wxFAIL_MSG( _T("not implemented") );
-
-    return false;
-}
-
-bool wxBitmapHandler::SaveFile(const wxBitmap * WXUNUSED(bitmap),
-                               const wxString& WXUNUSED(name),
-                               int WXUNUSED(type),
-                               const wxPalette * WXUNUSED(palette))
-{
-    wxFAIL_MSG( _T("not implemented") );
+    const wxBitmapRefData* oldRef = static_cast<const wxBitmapRefData*>(data);
+    wxBitmapRefData* newRef = new wxBitmapRefData(*oldRef);
+    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 false;
+    return newRef;

 }
 
 /* static */ void wxBitmap::InitStandardHandlers()
 }
 
 /* static */ void wxBitmap::InitStandardHandlers()