Removed a deprecated wxBitmap constructor, and some

[wxWidgets.git] / src / x11 / bitmap.cpp

diff --git a/src/x11/bitmap.cpp b/src/x11/bitmap.cpp
index 646ad0cb1aac58d8cdc6085e9bfd06b06beab18f..8663744e469ec32cf5ec2d45bf01a7bd6ed86aea 100644 (file)
--- a/src/x11/bitmap.cpp
+++ b/src/x11/bitmap.cpp
@@ -28,6 +28,9 @@
 #if wxUSE_NANOX
 #undef wxHAVE_LIB_XPM
 #define wxHAVE_LIB_XPM 0
 #if wxUSE_NANOX
 #undef wxHAVE_LIB_XPM
 #define wxHAVE_LIB_XPM 0

+
+// Copy from the drawable to the wxImage
+bool wxGetImageFromDrawable(GR_DRAW_ID drawable, int srcX, int srcY, int width, int height, wxImage& image);

 #endif
 
 #if wxUSE_XPM
 #endif
 
 #if wxUSE_XPM


@@ -88,17 +91,14 @@ bool wxMask::Create( const wxBitmap& bitmap,
 
     m_display = bitmap.GetDisplay();
 
 
     m_display = bitmap.GetDisplay();
 

-    wxImage image( bitmap );
+    wxImage image = bitmap.ConvertToImage();

     if (!image.Ok()) return FALSE;
     
     m_display = bitmap.GetDisplay();
     
     Display *xdisplay = (Display*) m_display;
     if (!image.Ok()) return FALSE;
     
     m_display = bitmap.GetDisplay();
     
     Display *xdisplay = (Display*) m_display;

-

     int xscreen = DefaultScreen( xdisplay );
     Window xroot = RootWindow( xdisplay, xscreen );
     int xscreen = DefaultScreen( xdisplay );
     Window xroot = RootWindow( xdisplay, xscreen );

-    Visual* xvisual = DefaultVisual( xdisplay, xscreen );
-    int bpp = DefaultDepth( xdisplay, xscreen );

     
     m_bitmap = (WXPixmap) XCreatePixmap( xdisplay, xroot, image.GetWidth(), image.GetHeight(), 1 );
     GC gc = XCreateGC( xdisplay, (Pixmap) m_bitmap, 0, NULL );
     
     m_bitmap = (WXPixmap) XCreatePixmap( xdisplay, xroot, image.GetWidth(), image.GetHeight(), 1 );
     GC gc = XCreateGC( xdisplay, (Pixmap) m_bitmap, 0, NULL );


@@ -114,18 +114,8 @@ bool wxMask::Create( const wxBitmap& bitmap,
     unsigned char green = colour.Green();
     unsigned char blue = colour.Blue();
 
     unsigned char green = colour.Green();
     unsigned char blue = colour.Blue();
 

-    XVisualInfo vinfo_template;
-    XVisualInfo *vi;
-
-    vinfo_template.visual = xvisual;
-    vinfo_template.visualid = XVisualIDFromVisual( xvisual );
-    vinfo_template.depth = bpp;
-    int nitem = 0;
-
-    vi = XGetVisualInfo( xdisplay, VisualIDMask|VisualDepthMask, &vinfo_template, &nitem );
-    wxASSERT_MSG( vi, wxT("No visual info") );
+    int bpp = wxTheApp->m_visualDepth;

     
     

-    if ((bpp == 16) && (vi->red_mask != 0xf800)) bpp = 15;

     if (bpp == 15)
     {
         red = red & 0xf8;
     if (bpp == 15)
     {
         red = red & 0xf8;


@@ -147,11 +137,13 @@ bool wxMask::Create( const wxBitmap& bitmap,
 
     XSetForeground( xdisplay, gc, BlackPixel(xdisplay,xscreen) );
 
 
     XSetForeground( xdisplay, gc, BlackPixel(xdisplay,xscreen) );
 

-    for (int j = 0; j < image.GetHeight(); j++)
+    int width = image.GetWidth();
+    int height = image.GetHeight();
+    for (int j = 0; j < height; j++)

     {
         int start_x = -1;
         int i;
     {
         int start_x = -1;
         int i;

-        for (i = 0; i < image.GetWidth(); i++)
+        for (i = 0; i < width; i++)

         {
             if ((data[index] == red) &&
                 (data[index+1] == green) &&
         {
             if ((data[index] == red) &&
                 (data[index+1] == green) &&


@@ -312,10 +304,10 @@ bool wxBitmap::Create( int width, int height, int depth )
     M_BMPDATA->m_height = height;
 
 #if wxUSE_NANOX
     M_BMPDATA->m_height = height;
 
 #if wxUSE_NANOX

-    M_BMPDATA->m_bitmap = (WXPixmap) GrNewPixmap(width, height, NULL);
+    M_BMPDATA->m_pixmap = (WXPixmap) GrNewPixmap(width, height, NULL);

     M_BMPDATA->m_bpp = bpp;
 
     M_BMPDATA->m_bpp = bpp;
 

-    wxASSERT_MSG( M_BMPDATA->m_bitmap, wxT("Bitmap creation failed") );
+    wxASSERT_MSG( M_BMPDATA->m_pixmap, wxT("Bitmap creation failed") );

 #else
     if (depth == 1)
     {
 #else
     if (depth == 1)
     {


@@ -378,7 +370,7 @@ bool wxBitmap::CreateFromXpm( const char **bits )
         XGetGeometry( xdisplay, pixmap, &xroot, &xRet, &yRet,
             &widthRet, &heightRet, &borderWidthRet, &depthRet);
 
         XGetGeometry( xdisplay, pixmap, &xroot, &xRet, &yRet,
             &widthRet, &heightRet, &borderWidthRet, &depthRet);
 

-        wxASSERT_MSG( bpp == (int)depthRet, wxT("colour depth mismatch") )
+        wxASSERT_MSG( bpp == (int)depthRet, wxT("colour depth mismatch") );

 #endif
 
         XpmFreeAttributes(&xpmAttr);
 #endif
 
         XpmFreeAttributes(&xpmAttr);


@@ -426,13 +418,49 @@ bool wxBitmap::CreateFromImage( const wxImage& image, int depth )
     if (!Create(w, h, depth))
         return FALSE;
 
     if (!Create(w, h, depth))
         return FALSE;
 

-    wxMemoryDC memDC;
-    memDC.SelectObject(*this);
+    // Unfortunately the mask has to be screen-depth since
+    // 1-bpp bitmaps don't seem to be supported
+    // TODO: implement transparent drawing, presumably
+    // by doing several blits as per the Windows
+    // implementation because Nano-X doesn't support
+    // XSetClipMask.
+    // TODO: could perhaps speed this function up
+    // by making a buffer of pixel values,
+    // and then calling GrArea to write that to the
+    // pixmap. See demos/nxroach.c.
+
+    bool hasMask = image.HasMask();
+    
+    GC pixmapGC = GrNewGC();
+    Pixmap pixmap = (Pixmap) GetPixmap();
+
+    GC maskGC = 0;
+    Pixmap maskPixmap = 0;

 
 

-    // Warning: this is very inefficient.
-    wxPen pen;
-    pen.SetStyle(wxSOLID);
-    pen.SetWidth(1);
+    unsigned char maskR = 0;
+    unsigned char maskG = 0;
+    unsigned char maskB = 0;
+
+    if (hasMask)
+    {
+        maskR = image.GetMaskRed();
+        maskG = image.GetMaskGreen();
+        maskB = image.GetMaskBlue();
+        
+        maskGC = GrNewGC();
+        maskPixmap = GrNewPixmap(w, h, 0);
+        if (!maskPixmap)
+            hasMask = FALSE;
+        else
+        {
+            wxMask* mask = new wxMask;
+            mask->SetBitmap((WXPixmap) maskPixmap);
+            SetMask(mask);
+        }
+    }
+
+    GR_COLOR lastPixmapColour = 0;
+    GR_COLOR lastMaskColour = 0;

     
     int i, j;
     for (i = 0; i < w; i++)
     
     int i, j;
     for (i = 0; i < w; i++)


@@ -442,26 +470,43 @@ bool wxBitmap::CreateFromImage( const wxImage& image, int depth )
             unsigned char red = image.GetRed(i, j);
             unsigned char green = image.GetGreen(i, j);
             unsigned char blue = image.GetBlue(i, j);
             unsigned char red = image.GetRed(i, j);
             unsigned char green = image.GetGreen(i, j);
             unsigned char blue = image.GetBlue(i, j);

-            wxColour colour(red, green, blue);

 
 

-            pen.SetColour(colour);
-            memDC.SetPen(pen);
-            memDC.DrawPoint(i, j);
+            GR_COLOR colour = GR_RGB(red, green, blue);
+
+            // Efficiency measure
+            if (colour != lastPixmapColour || (i == 0 && j == 0))
+            {
+                GrSetGCForeground(pixmapGC, colour);
+                lastPixmapColour = colour;
+            }
+            
+            GrPoint(pixmap, pixmapGC, i, j);

             
             

-#if 0

             if (hasMask)
             {
                 // scan the bitmap for the transparent colour and set the corresponding
                 // pixels in the mask to BLACK and the rest to WHITE
                 if (maskR == red && maskG == green && maskB == blue)
             if (hasMask)
             {
                 // scan the bitmap for the transparent colour and set the corresponding
                 // pixels in the mask to BLACK and the rest to WHITE
                 if (maskR == red && maskG == green && maskB == blue)

-                    ::SetPixel(hMaskDC, i, j, PALETTERGB(0, 0, 0));
+                {
+                    colour = GR_RGB(0, 0, 0);
+                }

                 else
                 else

-                    ::SetPixel(hMaskDC, i, j, PALETTERGB(255, 255, 255));
+                {
+                    colour = GR_RGB(255, 255, 255);
+                }
+                if (colour != lastMaskColour || (i == 0 && j == 0))
+                {
+                    GrSetGCForeground(maskGC, colour);
+                    lastMaskColour = colour;
+                }
+                GrPoint(maskPixmap, maskGC, i, j);

             }
             }

-#endif

         }
     }
         }
     }

-    memDC.SelectObject(wxNullBitmap);
+
+    GrDestroyGC(pixmapGC);
+    if (hasMask)
+        GrDestroyGC(maskGC);

     
     return TRUE;
 #else
     
     return TRUE;
 #else


@@ -482,7 +527,7 @@ bool wxBitmap::CreateFromImage( const wxImage& image, int depth )
     Window xroot = RootWindow( xdisplay, xscreen );
     Visual* xvisual = DefaultVisual( xdisplay, xscreen );
     
     Window xroot = RootWindow( xdisplay, xscreen );
     Visual* xvisual = DefaultVisual( xdisplay, xscreen );
     

-    int bpp = DefaultDepth( xdisplay, xscreen );
+    int bpp = wxTheApp->m_visualDepth;

     
     int width = image.GetWidth();
     int height = image.GetHeight();
     
     int width = image.GetWidth();
     int height = image.GetHeight();


@@ -532,20 +577,6 @@ bool wxBitmap::CreateFromImage( const wxImage& image, int depth )
             SetMask( mask );
         }
 
             SetMask( mask );
         }
 

-        // Retrieve info
-
-        XVisualInfo vinfo_template;
-        XVisualInfo *vi;
-
-        vinfo_template.visual = xvisual;
-        vinfo_template.visualid = XVisualIDFromVisual( xvisual );
-        vinfo_template.depth = bpp;
-        int nitem = 0;
-
-        vi = XGetVisualInfo( xdisplay, VisualIDMask|VisualDepthMask, &vinfo_template, &nitem );
-        wxASSERT_MSG( vi, wxT("No visual info") );
-
-        if ((bpp == 16) && (vi->red_mask != 0xf800)) bpp = 15;

         if (bpp < 8) bpp = 8;
 
         // Render
         if (bpp < 8) bpp = 8;
 
         // Render


@@ -555,22 +586,22 @@ bool wxBitmap::CreateFromImage( const wxImage& image, int depth )
 
         if (bpp > 8)
         {
 
         if (bpp > 8)
         {

-            if ((vi->red_mask > vi->green_mask) && (vi->green_mask > vi->blue_mask))      b_o = RGB;
-            else if ((vi->red_mask > vi->blue_mask) && (vi->blue_mask > vi->green_mask))  b_o = RBG;
-            else if ((vi->blue_mask > vi->red_mask) && (vi->red_mask > vi->green_mask))   b_o = BRG;
-            else if ((vi->blue_mask > vi->green_mask) && (vi->green_mask > vi->red_mask)) b_o = BGR;
-            else if ((vi->green_mask > vi->red_mask) && (vi->red_mask > vi->blue_mask))   b_o = GRB;
-            else if ((vi->green_mask > vi->blue_mask) && (vi->blue_mask > vi->red_mask))  b_o = GBR;
+            if ((wxTheApp->m_visualRedMask > wxTheApp->m_visualGreenMask) && (wxTheApp->m_visualGreenMask > wxTheApp->m_visualBlueMask))      b_o = RGB;
+            else if ((wxTheApp->m_visualRedMask > wxTheApp->m_visualBlueMask) && (wxTheApp->m_visualBlueMask > wxTheApp->m_visualGreenMask))  b_o = RBG;
+            else if ((wxTheApp->m_visualBlueMask > wxTheApp->m_visualRedMask) && (wxTheApp->m_visualRedMask > wxTheApp->m_visualGreenMask))   b_o = BRG;
+            else if ((wxTheApp->m_visualBlueMask > wxTheApp->m_visualGreenMask) && (wxTheApp->m_visualGreenMask > wxTheApp->m_visualRedMask)) b_o = BGR;
+            else if ((wxTheApp->m_visualGreenMask > wxTheApp->m_visualRedMask) && (wxTheApp->m_visualRedMask > wxTheApp->m_visualBlueMask))   b_o = GRB;
+            else if ((wxTheApp->m_visualGreenMask > wxTheApp->m_visualBlueMask) && (wxTheApp->m_visualBlueMask > wxTheApp->m_visualRedMask))  b_o = GBR;

         }
 
         }
 

-        XFree( vi );
-

         int r_mask = image.GetMaskRed();
         int g_mask = image.GetMaskGreen();
         int b_mask = image.GetMaskBlue();
 
         unsigned char* data = image.GetData();
         wxASSERT_MSG( data, "No image data" );
         int r_mask = image.GetMaskRed();
         int g_mask = image.GetMaskGreen();
         int b_mask = image.GetMaskBlue();
 
         unsigned char* data = image.GetData();
         wxASSERT_MSG( data, "No image data" );

+        
+        unsigned char *colorCube = wxTheApp->m_colorCube;

 
         bool hasMask = image.HasMask();
 
 
         bool hasMask = image.HasMask();
 


@@ -599,27 +630,7 @@ bool wxBitmap::CreateFromImage( const wxImage& image, int depth )
                     case 8:
                     {
                         int pixel = 0;
                     case 8:
                     {
                         int pixel = 0;

-#if 0                        
-                        if (wxTheApp->m_colorCube)
-                        {
-                            pixel = wxTheApp->m_colorCube[ ((r & 0xf8) << 7) + ((g & 0xf8) << 2) + ((b & 0xf8) >> 3) ];
-                        }
-                        else
-                        {
-                            GdkColormap *cmap = gtk_widget_get_default_colormap();
-                            GdkColor *colors = cmap->colors;
-                            int max = 3 * (65536);
-    
-                            for (int i = 0; i < cmap->size; i++)
-                            {
-                                int rdiff = (r << 8) - colors[i].red;
-                                int gdiff = (g << 8) - colors[i].green;
-                                int bdiff = (b << 8) - colors[i].blue;
-                                int sum = ABS (rdiff) + ABS (gdiff) + ABS (bdiff);
-                                if (sum < max) { pixel = i; max = sum; }
-                            }
-                        }
-#endif    
+                        pixel = colorCube[ ((r & 0xf8) << 7) + ((g & 0xf8) << 2) + ((b & 0xf8) >> 3) ];

                         XPutPixel( data_image, x, y, pixel );
                         break;
                     }
                         XPutPixel( data_image, x, y, pixel );
                         break;
                     }


@@ -694,10 +705,6 @@ bool wxBitmap::CreateFromImage( const wxImage& image, int depth )
 
         GC gc = XCreateGC( xdisplay, (Pixmap) M_BMPDATA->m_pixmap, 0, NULL );
         XPutImage( xdisplay, (Pixmap) M_BMPDATA->m_pixmap, gc, data_image, 0, 0, 0, 0, width, height );
 
         GC gc = XCreateGC( xdisplay, (Pixmap) M_BMPDATA->m_pixmap, 0, NULL );
         XPutImage( xdisplay, (Pixmap) M_BMPDATA->m_pixmap, gc, data_image, 0, 0, 0, 0, width, height );

-#ifdef __WXDEBUG__
-       XSync(wxGlobalDisplay(), False);
-#endif
-

         XDestroyImage( data_image );
         XFreeGC( xdisplay, gc );
 
         XDestroyImage( data_image );
         XFreeGC( xdisplay, gc );
 


@@ -718,24 +725,6 @@ bool wxBitmap::CreateFromImage( const wxImage& image, int depth )
     // wxUSE_NANOX
 }
 
     // wxUSE_NANOX
 }
 

-static void wxCalcPrecAndShift( unsigned long mask, int *shift, int *prec )
-{
-  *shift = 0;
-  *prec = 0;
-
-  while (!(mask & 0x1))
-    {
-      (*shift)++;
-      mask >>= 1;
-    }
-
-  while (mask & 0x1)
-    {
-      (*prec)++;
-      mask >>= 1;
-    }
-}
-

 wxImage wxBitmap::ConvertToImage() const
 {
     wxImage image;
 wxImage wxBitmap::ConvertToImage() const
 {
     wxImage image;


@@ -744,42 +733,14 @@ wxImage wxBitmap::ConvertToImage() const
 
     Display *xdisplay = (Display*) M_BMPDATA->m_display;
     wxASSERT_MSG( xdisplay, wxT("No display") );
 
     Display *xdisplay = (Display*) M_BMPDATA->m_display;
     wxASSERT_MSG( xdisplay, wxT("No display") );

-    
-    int xscreen = DefaultScreen( xdisplay );
-    Visual* xvisual = DefaultVisual( xdisplay, xscreen );
-    
-    int bpp = DefaultDepth( xdisplay, xscreen );

 
 #if wxUSE_NANOX
 
 #if wxUSE_NANOX

-    int w = image.GetWidth();
-    int h = image.GetHeight();
-    
-    wxMemoryDC memDC;
-    memDC.SelectObject(*this);
-
-    wxColour pixelCol;
-
-    // Warning: this is very inefficient.
-    int i, j;
-    for (i = 0; i < w; i++)
-    {
-        for (j = 0; j < h; j++)
-        {
-            memDC.GetPixel(i, j, & pixelCol);
-
-            // TODO: make wxColour accessors more efficient
-            // by inlining, if possible
-            image.SetRGB(i, j,
-                         pixelCol.Red(), pixelCol.Green(),
-                         pixelCol.Blue());
-        }
-    }
-    memDC.SelectObject(wxNullBitmap);
-
+    //int bpp = DefaultDepth(xdisplay, xscreen);
+    wxGetImageFromDrawable((Pixmap) GetPixmap(), 0, 0, GetWidth(), GetHeight(), image);

     return image;
     return image;

-    

 #else
     // !wxUSE_NANOX
 #else
     // !wxUSE_NANOX

+    int bpp = wxTheApp->m_visualDepth;

     XImage *x_image = NULL;
     if (GetPixmap())
     {
     XImage *x_image = NULL;
     if (GetPixmap())
     {


@@ -832,53 +793,29 @@ wxImage wxBitmap::ConvertToImage() const
 
     if (GetPixmap())
     {
 
     if (GetPixmap())
     {

-        // Retrieve info
-
-        XVisualInfo vinfo_template;
-        XVisualInfo *vi;
-
-        vinfo_template.visual = xvisual;
-        vinfo_template.visualid = XVisualIDFromVisual( xvisual );
-        vinfo_template.depth = bpp;
-        int nitem = 0;
-
-        vi = XGetVisualInfo( xdisplay, VisualIDMask|VisualDepthMask, &vinfo_template, &nitem );
-        wxASSERT_MSG( vi, wxT("No visual info") );
-        
-        int red_prec,green_prec,blue_prec;
-        int red_shift,green_shift,blue_shift;
-        wxCalcPrecAndShift( vi->red_mask, &red_shift, &red_prec );
-        wxCalcPrecAndShift( vi->green_mask, &green_shift, &green_prec );
-        wxCalcPrecAndShift( vi->blue_mask, &blue_shift, &blue_prec );
-        if (bpp == 16) bpp = red_prec + green_prec + blue_prec;
-        
-        red_shift_right = red_shift;
-        red_shift_left = 8-red_prec;
-        green_shift_right = green_shift;
-        green_shift_left = 8-green_prec;
-        blue_shift_right = blue_shift;
-        blue_shift_left = 8-blue_prec;
-        
-#if 0
-        use_shift = (vi->visual->c_class == TrueColor) || (vi->visual->c_class == DirectColor);
-#else
-        use_shift = TRUE;
-#endif
+        red_shift_right = wxTheApp->m_visualRedShift;
+        red_shift_left = 8-wxTheApp->m_visualRedPrec;
+        green_shift_right = wxTheApp->m_visualGreenShift;
+        green_shift_left = 8-wxTheApp->m_visualGreenPrec;
+        blue_shift_right = wxTheApp->m_visualBlueShift;
+        blue_shift_left = 8-wxTheApp->m_visualBluePrec;

         
         

-        XFree( vi );
+        use_shift = (wxTheApp->m_visualType == GrayScale) || (wxTheApp->m_visualType != PseudoColor);

     }
     }

+    

     if (GetBitmap())
     {
         bpp = 1;
     }
 
     if (GetBitmap())
     {
         bpp = 1;
     }
 

+    XColor *colors = (XColor*) wxTheApp->m_visualColormap;

 
 

-//    GdkColormap *cmap = gtk_widget_get_default_colormap();
-
+    int width = GetWidth();
+    int height = GetHeight();

     long pos = 0;
     long pos = 0;

-    for (int j = 0; j < GetHeight(); j++)
+    for (int j = 0; j < height; j++)

     {
     {

-        for (int i = 0; i < GetWidth(); i++)
+        for (int i = 0; i < width; i++)

         {
             unsigned long pixel = XGetPixel( x_image, i, j );
             if (bpp == 1)
         {
             unsigned long pixel = XGetPixel( x_image, i, j );
             if (bpp == 1)


@@ -902,14 +839,12 @@ wxImage wxBitmap::ConvertToImage() const
                 data[pos+1] = (pixel >> green_shift_right) << green_shift_left;
                 data[pos+2] = (pixel >> blue_shift_right)  << blue_shift_left;
             }
                 data[pos+1] = (pixel >> green_shift_right) << green_shift_left;
                 data[pos+2] = (pixel >> blue_shift_right)  << blue_shift_left;
             }

-#if 0
-            else if (cmap->colors)
+            else if (colors)

             {
             {

-                data[pos] =   cmap->colors[pixel].red   >> 8;
-                data[pos+1] = cmap->colors[pixel].green >> 8;
-                data[pos+2] = cmap->colors[pixel].blue  >> 8;
+                data[pos] =   colors[pixel].red   >> 8;
+                data[pos+1] = colors[pixel].green >> 8;
+                data[pos+2] = colors[pixel].blue  >> 8;

             }
             }

-#endif

             else
             {
                 wxFAIL_MSG( wxT("Image conversion failed. Unknown visual type.") );
             else
             {
                 wxFAIL_MSG( wxT("Image conversion failed. Unknown visual type.") );


@@ -1087,7 +1022,7 @@ bool wxBitmap::SaveFile( const wxString &name, int type, wxPalette *WXUNUSED(pal
 
     // Try to save the bitmap via wxImage handlers:
     {
 
     // Try to save the bitmap via wxImage handlers:
     {

-        wxImage image( *this );
+        wxImage image(this->ConvertToImage()) ;

         if (image.Ok()) return image.SaveFile( name, type );
     }
 
         if (image.Ok()) return image.SaveFile( name, type );
     }
 


@@ -1176,7 +1111,7 @@ bool wxBitmap::LoadFile( const wxString &name, int type )
     {
         wxImage image;
         if (!image.LoadFile( name, type )) return FALSE;
     {
         wxImage image;
         if (!image.LoadFile( name, type )) return FALSE;

-        if (image.Ok()) *this = image.ConvertToBitmap();
+        if (image.Ok()) *this = wxBitmap(image);

         else return FALSE;
     }
 
         else return FALSE;
     }
 


@@ -1246,3 +1181,140 @@ WXDisplay *wxBitmap::GetDisplay() const
     return M_BMPDATA->m_display;
 }
 
     return M_BMPDATA->m_display;
 }
 

+#if wxUSE_NANOX
+// Copy from the drawable to the wxImage
+bool wxGetImageFromDrawable(GR_DRAW_ID drawable, int srcX, int srcY, int width, int height, wxImage& image)
+{
+    GR_SCREEN_INFO sinfo;
+    int x, y;
+    GR_PIXELVAL *pixels;
+    GR_PALETTE* palette = NULL;
+    unsigned char rgb[3], *pp;
+
+    GrGetScreenInfo(&sinfo);
+
+    if (sinfo.pixtype == MWPF_PALETTE) {
+               if(!(palette = (GR_PALETTE*) malloc(sizeof(GR_PALETTE)))) {
+                       return FALSE;
+               }
+               GrGetSystemPalette(palette);
+       }
+
+    if(!(pixels = (GR_PIXELVAL*) malloc(sizeof(GR_PIXELVAL) * width * height)))
+    {
+        return FALSE;
+    }
+
+    image.Create(width, height);
+
+       GrReadArea(drawable, srcX, srcY, width, height,
+                                               pixels);
+
+
+               for(x = 0; x < sinfo.cols; x++) {
+
+                       pp = (unsigned char *)pixels +
+                               ((x + (y * sinfo.cols)) *
+                               sizeof(GR_PIXELVAL));
+
+                       switch(sinfo.pixtype) {
+                       /* FIXME: These may need modifying on big endian. */
+                               case MWPF_TRUECOLOR0888:
+                               case MWPF_TRUECOLOR888:
+                                       rgb[0] = pp[2];
+                                       rgb[1] = pp[1];
+                                       rgb[2] = pp[0];
+                                       break;
+                               case MWPF_PALETTE:
+                                       rgb[0] = palette->palette[pp[0]].r;
+                                       rgb[1] = palette->palette[pp[0]].g;
+                                       rgb[2] = palette->palette[pp[0]].b;
+                                       break;
+                               case MWPF_TRUECOLOR565:
+                                       rgb[0] = pp[1] & 0xf8;
+                                       rgb[1] = ((pp[1] & 0x07) << 5) |
+                                               ((pp[0] & 0xe0) >> 3);
+                                       rgb[2] = (pp[0] & 0x1f) << 3;
+                                       break;
+                               case MWPF_TRUECOLOR555:
+                                       rgb[0] = (pp[1] & 0x7c) << 1;
+                                       rgb[1] = ((pp[1] & 0x03) << 6) |
+                                               ((pp[0] & 0xe0) >> 2);
+                                       rgb[2] = (pp[0] & 0x1f) << 3;
+                                       break;
+                               case MWPF_TRUECOLOR332:
+                                       rgb[0] = pp[0] & 0xe0;
+                                       rgb[1] = (pp[0] & 0x1c) << 3;
+                                       rgb[2] = (pp[0] & 0x03) << 6;
+                                       break;
+                               default:
+                                       fprintf(stderr, "Unsupported pixel "
+                                                       "format\n");
+                                       return 1;
+                       }
+
+            image.SetRGB(x, y, rgb[0], rgb[1], rgb[2]);
+
+       }
+
+    free(pixels);
+    if(palette) free(palette);
+
+    return TRUE;
+}
+
+#if 0
+int GrGetPixelColor(GR_SCREEN_INFO* sinfo, GR_PALETTE* palette, GR_PIXELVAL pixel,
+    unsigned char* red, unsigned char* green, unsigned char* blue)
+{
+       unsigned char rgb[3], *pp;
+
+    pp = (unsigned char*) & pixel ;
+
+    switch (sinfo.pixtype)
+    {
+                       /* FIXME: These may need modifying on big endian. */
+                               case MWPF_TRUECOLOR0888:
+                               case MWPF_TRUECOLOR888:
+                                       rgb[0] = pp[2];
+                                       rgb[1] = pp[1];
+                                       rgb[2] = pp[0];
+                                       break;
+                               case MWPF_PALETTE:
+                                       rgb[0] = palette->palette[pp[0]].r;
+                                       rgb[1] = palette->palette[pp[0]].g;
+                                       rgb[2] = palette->palette[pp[0]].b;
+                                       break;
+                               case MWPF_TRUECOLOR565:
+                                       rgb[0] = pp[1] & 0xf8;
+                                       rgb[1] = ((pp[1] & 0x07) << 5) |
+                                               ((pp[0] & 0xe0) >> 3);
+                                       rgb[2] = (pp[0] & 0x1f) << 3;
+                                       break;
+                               case MWPF_TRUECOLOR555:
+                                       rgb[0] = (pp[1] & 0x7c) << 1;
+                                       rgb[1] = ((pp[1] & 0x03) << 6) |
+                                               ((pp[0] & 0xe0) >> 2);
+                                       rgb[2] = (pp[0] & 0x1f) << 3;
+                                       break;
+                               case MWPF_TRUECOLOR332:
+                                       rgb[0] = pp[0] & 0xe0;
+                                       rgb[1] = (pp[0] & 0x1c) << 3;
+                                       rgb[2] = (pp[0] & 0x03) << 6;
+                                       break;
+                               default:
+                                       fprintf(stderr, "Unsupported pixel format\n");
+                                       return 0;
+       }
+
+
+    *(red) = rgb[0];
+    *(green) = rgb[1];
+    *(blue) = rgb[2];
+    return 1;
+}
+#endif
+
+#endif
+  // wxUSE_NANOX
+