yielding from main loop

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

diff --git a/src/gtk/dcclient.cpp b/src/gtk/dcclient.cpp
index 92ae53ff9d9b6af8ce7754fb08d46ec8733c45aa..d67e3cc0c004510f5993bede24f774bfae9259f9 100644 (file)
--- a/src/gtk/dcclient.cpp
+++ b/src/gtk/dcclient.cpp
@@ -92,47 +92,42 @@ void gdk_wx_draw_bitmap(GdkDrawable  *drawable,
                         gint         width,
                         gint         height)
 {
                         gint         width,
                         gint         height)
 {

-    gint src_width, src_height;
-#ifndef __WXGTK20__
-    GdkWindowPrivate *drawable_private;
-    GdkWindowPrivate *src_private;
-    GdkGCPrivate *gc_private;
-#endif
-

     g_return_if_fail (drawable != NULL);
     g_return_if_fail (src != NULL);
     g_return_if_fail (gc != NULL);
     g_return_if_fail (drawable != NULL);
     g_return_if_fail (src != NULL);
     g_return_if_fail (gc != NULL);

-
+    

 #ifdef __WXGTK20__
 #ifdef __WXGTK20__

-    if (GDK_WINDOW_DESTROYED(drawable) || GDK_WINDOW_DESTROYED(src))
-        return;
-
+    gint src_width, src_height;

     gdk_drawable_get_size(src, &src_width, &src_height);
     gdk_drawable_get_size(src, &src_width, &src_height);

-#else
-    drawable_private = (GdkWindowPrivate*) drawable;
-    src_private = (GdkWindowPrivate*) src;
-    if (drawable_private->destroyed || src_private->destroyed)
-        return;
-
-    src_width = src_private->width;
-    src_height = src_private->height;
-
-    gc_private = (GdkGCPrivate*) gc;
-#endif
-

     if (width == -1) width = src_width;
     if (height == -1) height = src_height;
 
     if (width == -1) width = src_width;
     if (height == -1) height = src_height;
 

-#ifdef __WXGTK20__

     XCopyPlane( GDK_WINDOW_XDISPLAY(drawable),
                 GDK_WINDOW_XID(src),
                 GDK_WINDOW_XID(drawable),
                 GDK_GC_XGC(gc),
                 xsrc, ysrc,
                 width, height,
     XCopyPlane( GDK_WINDOW_XDISPLAY(drawable),
                 GDK_WINDOW_XID(src),
                 GDK_WINDOW_XID(drawable),
                 GDK_GC_XGC(gc),
                 xsrc, ysrc,
                 width, height,

-                xdest, ydest,
+                0, 0,

                 1 );
 #else
                 1 );
 #else

+    GdkWindowPrivate *drawable_private;
+    GdkWindowPrivate *src_private;
+    GdkGCPrivate *gc_private;
+    
+    drawable_private = (GdkWindowPrivate*) drawable;
+    src_private = (GdkWindowPrivate*) src;
+    if (drawable_private->destroyed || src_private->destroyed)
+        return;
+
+    gint src_width = src_private->width;
+    gint src_height = src_private->height;
+
+    gc_private = (GdkGCPrivate*) gc;
+    
+    if (width == -1) width = src_width;
+    if (height == -1) height = src_height;
+    

     XCopyPlane( drawable_private->xdisplay,
                 src_private->xwindow,
                 drawable_private->xwindow,
     XCopyPlane( drawable_private->xdisplay,
                 src_private->xwindow,
                 drawable_private->xwindow,


@@ -196,7 +191,7 @@ static void wxInitGCPool()
         // If we cannot malloc, then fail with error
         // when debug is enabled.  If debug is not enabled,
         // the problem will eventually get caught
         // If we cannot malloc, then fail with error
         // when debug is enabled.  If debug is not enabled,
         // the problem will eventually get caught

-               // in wxGetPoolGC.
+        // in wxGetPoolGC.

         wxFAIL_MSG( wxT("Cannot allocate GC pool") );
         return;
     }
         wxFAIL_MSG( wxT("Cannot allocate GC pool") );
         return;
     }


@@ -242,13 +237,13 @@ static GdkGC* wxGetPoolGC( GdkWindow *window, wxPoolGCType type )
     // We did not find an available GC.
     // We need to grow the GC pool.
     pptr = (wxGC *)realloc(wxGCPool,
     // We did not find an available GC.
     // We need to grow the GC pool.
     pptr = (wxGC *)realloc(wxGCPool,

-               (wxGCPoolSize + GC_POOL_ALLOC_SIZE)*sizeof(wxGC));
+        (wxGCPoolSize + GC_POOL_ALLOC_SIZE)*sizeof(wxGC));

     if (pptr != NULL)
     {
         // Initialize newly allocated pool.
         wxGCPool = pptr;
     if (pptr != NULL)
     {
         // Initialize newly allocated pool.
         wxGCPool = pptr;

-       memset(&wxGCPool[wxGCPoolSize], 0,
-                       GC_POOL_ALLOC_SIZE*sizeof(wxGC));
+        memset(&wxGCPool[wxGCPoolSize], 0,
+            GC_POOL_ALLOC_SIZE*sizeof(wxGC));

     
         // Initialize entry we will return.    
         wxGCPool[wxGCPoolSize].m_gc = gdk_gc_new( window );
     
         // Initialize entry we will return.    
         wxGCPool[wxGCPoolSize].m_gc = gdk_gc_new( window );


@@ -778,6 +773,7 @@ void wxWindowDC::DoDrawPolygon( int n, wxPoint points[], wxCoord xoffset, wxCoor
 
         if (m_pen.GetStyle() != wxTRANSPARENT)
         {
 
         if (m_pen.GetStyle() != wxTRANSPARENT)
         {

+/*

             for (i = 0 ; i < n ; i++)
             {
                 gdk_draw_line( m_window, m_penGC,
             for (i = 0 ; i < n ; i++)
             {
                 gdk_draw_line( m_window, m_penGC,


@@ -786,6 +782,9 @@ void wxWindowDC::DoDrawPolygon( int n, wxPoint points[], wxCoord xoffset, wxCoor
                                gdkpoints[(i+1)%n].x,
                                gdkpoints[(i+1)%n].y);
             }
                                gdkpoints[(i+1)%n].x,
                                gdkpoints[(i+1)%n].y);
             }

+*/
+            gdk_draw_polygon( m_window, m_penGC, FALSE, gdkpoints, n );
+            

         }
     }
 
         }
     }
 


@@ -1052,7 +1051,7 @@ void wxWindowDC::DoDrawBitmap( const wxBitmap &bitmap,
 
     bool is_mono = (bitmap.GetBitmap() != NULL);
 
 
     bool is_mono = (bitmap.GetBitmap() != NULL);
 

-    /* scale/translate size and position */
+    // scale/translate size and position

     int xx = XLOG2DEV(x);
     int yy = YLOG2DEV(y);
 
     int xx = XLOG2DEV(x);
     int yy = YLOG2DEV(y);
 


@@ -1067,7 +1066,7 @@ void wxWindowDC::DoDrawBitmap( const wxBitmap &bitmap,
     int ww = XLOG2DEVREL(w);
     int hh = YLOG2DEVREL(h);
 
     int ww = XLOG2DEVREL(w);
     int hh = YLOG2DEVREL(h);
 

-    /* compare to current clipping region */
+    // compare to current clipping region

     if (!m_currentClippingRegion.IsNull())
     {
         wxRegion tmp( xx,yy,ww,hh );
     if (!m_currentClippingRegion.IsNull())
     {
         wxRegion tmp( xx,yy,ww,hh );


@@ -1076,79 +1075,82 @@ void wxWindowDC::DoDrawBitmap( const wxBitmap &bitmap,
             return;
     }
 
             return;
     }
 

-    /* scale bitmap if required */
-    wxBitmap use_bitmap;
+    // scale bitmap if required 
+    wxBitmap use_bitmap = bitmap;

     if ((w != ww) || (h != hh))
     if ((w != ww) || (h != hh))

-    {
-        wxImage image = bitmap.ConvertToImage();
-        image.Rescale( ww, hh );
-        if (is_mono)
-            use_bitmap = wxBitmap(image.ConvertToMono(255,255,255), 1);
-        else
-            use_bitmap = wxBitmap(image);
-    }
-    else
-    {
-        use_bitmap = bitmap;
-    }
+        use_bitmap = use_bitmap.Rescale( 0, 0, ww, hh, ww, hh );

     
     

-    /* apply mask if any */
+    // apply mask if any

     GdkBitmap *mask = (GdkBitmap *) NULL;
     if (use_bitmap.GetMask()) mask = use_bitmap.GetMask()->GetBitmap();
 
     GdkBitmap *mask = (GdkBitmap *) NULL;
     if (use_bitmap.GetMask()) mask = use_bitmap.GetMask()->GetBitmap();
 

-        if (useMask && mask)
+    GdkBitmap *new_mask = (GdkBitmap*) NULL;
+    
+    if (useMask && mask)
+    {
+        if (!m_currentClippingRegion.IsNull())

         {
         {

-            GdkBitmap *new_mask = (GdkBitmap*) NULL;
-#ifndef __WXGTK20__  // TODO fix crash
-            if (!m_currentClippingRegion.IsNull())
-            {
-                GdkColor col;
-                new_mask = gdk_pixmap_new( wxGetRootWindow()->window, ww, hh, 1 );
-                GdkGC *gc = gdk_gc_new( new_mask );
-                col.pixel = 0;
-                gdk_gc_set_foreground( gc, &col );
-                gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, ww, hh );
-                col.pixel = 0;
-                gdk_gc_set_background( gc, &col );
-                col.pixel = 1;
-                gdk_gc_set_foreground( gc, &col );
-                gdk_gc_set_clip_region( gc, m_currentClippingRegion.GetRegion() );
-                gdk_gc_set_clip_origin( gc, -xx, -yy );
-                gdk_gc_set_fill( gc, GDK_OPAQUE_STIPPLED );
-                gdk_gc_set_stipple( gc, mask );
-                gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, ww, hh );
-                gdk_gc_unref( gc );
-            }
-#endif
-            if (is_mono)
-            {
-                if (new_mask)
-                    gdk_gc_set_clip_mask( m_textGC, new_mask );
-                else
-                    gdk_gc_set_clip_mask( m_textGC, mask );
-                gdk_gc_set_clip_origin( m_textGC, xx, yy );
-            }
+            GdkColor col;
+            new_mask = gdk_pixmap_new( wxGetRootWindow()->window, ww, hh, 1 );
+            GdkGC *gc = gdk_gc_new( new_mask );
+            col.pixel = 0;
+            gdk_gc_set_foreground( gc, &col );
+            gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, ww, hh );
+            col.pixel = 0;
+            gdk_gc_set_background( gc, &col );
+            col.pixel = 1;
+            gdk_gc_set_foreground( gc, &col );
+            gdk_gc_set_clip_region( gc, m_currentClippingRegion.GetRegion() );
+            gdk_gc_set_clip_origin( gc, -xx, -yy );
+            gdk_gc_set_fill( gc, GDK_OPAQUE_STIPPLED );
+            gdk_gc_set_stipple( gc, mask );
+            gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, ww, hh );
+            gdk_gc_unref( gc );
+        }
+        
+        if (is_mono)
+        {
+            if (new_mask)
+                gdk_gc_set_clip_mask( m_textGC, new_mask );

             else
             else

-            {
-                if (new_mask)
-                    gdk_gc_set_clip_mask( m_penGC, new_mask );
-                else
-                    gdk_gc_set_clip_mask( m_penGC, mask );
-                gdk_gc_set_clip_origin( m_penGC, xx, yy );
-            }
-            
+                gdk_gc_set_clip_mask( m_textGC, mask );
+            gdk_gc_set_clip_origin( m_textGC, xx, yy );
+        }
+        else
+        {

             if (new_mask)
             if (new_mask)

-                gdk_bitmap_unref( new_mask );
+                gdk_gc_set_clip_mask( m_penGC, new_mask );
+            else
+                gdk_gc_set_clip_mask( m_penGC, mask );
+            gdk_gc_set_clip_origin( m_penGC, xx, yy );

         }
         }

+    }

 
 

-    /* Draw XPixmap or XBitmap, depending on what the wxBitmap contains. For
-       drawing a mono-bitmap (XBitmap) we use the current text GC */
+    // Draw XPixmap or XBitmap, depending on what the wxBitmap contains. For
+    // drawing a mono-bitmap (XBitmap) we use the current text GC

     if (is_mono)
     if (is_mono)

+    {
+#ifdef __WXGTK20__
+        GdkPixmap *bitmap = gdk_pixmap_new( wxGetRootWindow()->window, ww, hh, -1 );
+        GdkGC *gc = gdk_gc_new( bitmap );
+        gdk_gc_set_foreground( gc, m_textForegroundColour.GetColor() );
+        gdk_gc_set_background( gc, m_textBackgroundColour.GetColor() );
+        gdk_wx_draw_bitmap( bitmap, gc, use_bitmap.GetBitmap(), 0, 0, 0, 0, -1, -1 );
+                
+        gdk_draw_drawable( m_window, m_textGC, bitmap, 0, 0, xx, yy, -1, -1 );
+        
+        gdk_bitmap_unref( bitmap );
+        gdk_gc_unref( gc );
+#else

         gdk_wx_draw_bitmap( m_window, m_textGC, use_bitmap.GetBitmap(), 0, 0, xx, yy, -1, -1 );
         gdk_wx_draw_bitmap( m_window, m_textGC, use_bitmap.GetBitmap(), 0, 0, xx, yy, -1, -1 );

+#endif
+    }

     else
     else

+    {

         gdk_draw_pixmap( m_window, m_penGC, use_bitmap.GetPixmap(), 0, 0, xx, yy, -1, -1 );
         gdk_draw_pixmap( m_window, m_penGC, use_bitmap.GetPixmap(), 0, 0, xx, yy, -1, -1 );

+    }

 
 

-    /* remove mask again if any */
+    // remove mask again if any

     if (useMask && mask)
     {
         if (is_mono)
     if (useMask && mask)
     {
         if (is_mono)


@@ -1166,6 +1168,9 @@ void wxWindowDC::DoDrawBitmap( const wxBitmap &bitmap,
                 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
         }
     }
                 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
         }
     }

+    
+    if (new_mask)
+        gdk_bitmap_unref( new_mask );

 }
 
 bool wxWindowDC::DoBlit( wxCoord xdest, wxCoord ydest,
 }
 
 bool wxWindowDC::DoBlit( wxCoord xdest, wxCoord ydest,


@@ -1176,22 +1181,15 @@ bool wxWindowDC::DoBlit( wxCoord xdest, wxCoord ydest,
                          bool useMask,
                          wxCoord xsrcMask, wxCoord ysrcMask )
 {
                          bool useMask,
                          wxCoord xsrcMask, wxCoord ysrcMask )
 {

-   /* this is the nth try to get this utterly useless function to
-      work. it now completely ignores the scaling or translation
-      of the source dc, but scales correctly on the target dc and
-      knows about possible mask information in a memory dc. */
-

     wxCHECK_MSG( Ok(), FALSE, wxT("invalid window dc") );
 
     wxCHECK_MSG( source, FALSE, wxT("invalid source dc") );
 
     if (!m_window) return FALSE;
 
     wxCHECK_MSG( Ok(), FALSE, wxT("invalid window dc") );
 
     wxCHECK_MSG( source, FALSE, wxT("invalid source dc") );
 
     if (!m_window) return FALSE;
 

-#if 1

     // transform the source DC coords to the device ones
     xsrc = source->XLOG2DEV(xsrc);
     ysrc = source->YLOG2DEV(ysrc);
     // transform the source DC coords to the device ones
     xsrc = source->XLOG2DEV(xsrc);
     ysrc = source->YLOG2DEV(ysrc);

-#endif

 
     wxClientDC *srcDC = (wxClientDC*)source;
     wxMemoryDC *memDC = (wxMemoryDC*)source;
 
     wxClientDC *srcDC = (wxClientDC*)source;
     wxMemoryDC *memDC = (wxMemoryDC*)source;


@@ -1199,45 +1197,47 @@ bool wxWindowDC::DoBlit( wxCoord xdest, wxCoord ydest,
     bool use_bitmap_method = FALSE;
     bool is_mono = FALSE;
 
     bool use_bitmap_method = FALSE;
     bool is_mono = FALSE;
 

-    /* TODO: use the mask origin when drawing transparently */
+    // TODO: use the mask origin when drawing transparently

     if (xsrcMask == -1 && ysrcMask == -1)
     {
     if (xsrcMask == -1 && ysrcMask == -1)
     {

-        xsrcMask = xsrc; ysrcMask = ysrc;
+        xsrcMask = xsrc;
+        ysrcMask = ysrc;

     }
 
     if (srcDC->m_isMemDC)
     {
         if (!memDC->m_selected.Ok()) return FALSE;
 
     }
 
     if (srcDC->m_isMemDC)
     {
         if (!memDC->m_selected.Ok()) return FALSE;
 

-        /* we use the "XCopyArea" way to copy a memory dc into
-           y different window if the memory dc BOTH
-           a) doesn't have any mask or its mask isn't used
-           b) it is clipped
-           c) is not 1-bit */
+        is_mono = (memDC->m_selected.GetDepth() == 1);
+
+        // we use the "XCopyArea" way to copy a memory dc into
+        // a different window if the memory dc BOTH
+        // a) doesn't have any mask or its mask isn't used
+        // b) it is clipped
+        // c) is not 1-bit

 
         if (useMask && (memDC->m_selected.GetMask()))
         {
 
         if (useMask && (memDC->m_selected.GetMask()))
         {

-           /* we HAVE TO use the direct way for memory dcs
-              that have mask since the XCopyArea doesn't know
-              about masks */
+            // we HAVE TO use the direct way for memory dcs
+            // that have mask since the XCopyArea doesn't know
+            // about masks

             use_bitmap_method = TRUE;
         }
             use_bitmap_method = TRUE;
         }

-        else if (memDC->m_selected.GetDepth() == 1)
+        else if (is_mono)

         {
         {

-           /* we HAVE TO use the direct way for memory dcs
-              that are bitmaps because XCopyArea doesn't cope
-              with different bit depths */
-            is_mono = TRUE;
+            // we HAVE TO use the direct way for memory dcs
+            // that are bitmaps because XCopyArea doesn't cope
+            // with different bit depths

             use_bitmap_method = TRUE;
         }
         else if ((xsrc == 0) && (ysrc == 0) &&
                  (width == memDC->m_selected.GetWidth()) &&
                  (height == memDC->m_selected.GetHeight()))
         {
             use_bitmap_method = TRUE;
         }
         else if ((xsrc == 0) && (ysrc == 0) &&
                  (width == memDC->m_selected.GetWidth()) &&
                  (height == memDC->m_selected.GetHeight()))
         {

-           /* we SHOULD use the direct way if all of the bitmap
-              in the memory dc is copied in which case XCopyArea
-              wouldn't be able able to boost performace by reducing
-              the area to be scaled */
+            // we SHOULD use the direct way if all of the bitmap
+            // in the memory dc is copied in which case XCopyArea
+            // wouldn't be able able to boost performace by reducing
+            // the area to be scaled

             use_bitmap_method = TRUE;
         }
         else
             use_bitmap_method = TRUE;
         }
         else


@@ -1249,14 +1249,14 @@ bool wxWindowDC::DoBlit( wxCoord xdest, wxCoord ydest,
     CalcBoundingBox( xdest, ydest );
     CalcBoundingBox( xdest + width, ydest + height );
 
     CalcBoundingBox( xdest, ydest );
     CalcBoundingBox( xdest + width, ydest + height );
 

-    /* scale/translate size and position */
+    // scale/translate size and position

     wxCoord xx = XLOG2DEV(xdest);
     wxCoord yy = YLOG2DEV(ydest);
 
     wxCoord ww = XLOG2DEVREL(width);
     wxCoord hh = YLOG2DEVREL(height);
 
     wxCoord xx = XLOG2DEV(xdest);
     wxCoord yy = YLOG2DEV(ydest);
 
     wxCoord ww = XLOG2DEVREL(width);
     wxCoord hh = YLOG2DEVREL(height);
 

-    /* compare to current clipping region */
+    // compare to current clipping region

     if (!m_currentClippingRegion.IsNull())
     {
         wxRegion tmp( xx,yy,ww,hh );
     if (!m_currentClippingRegion.IsNull())
     {
         wxRegion tmp( xx,yy,ww,hh );


@@ -1270,39 +1270,56 @@ bool wxWindowDC::DoBlit( wxCoord xdest, wxCoord ydest,
 
     if (use_bitmap_method)
     {
 
     if (use_bitmap_method)
     {

-        /* scale/translate bitmap size */
+        // scale/translate bitmap size

         wxCoord bm_width = memDC->m_selected.GetWidth();
         wxCoord bm_height = memDC->m_selected.GetHeight();
 
         wxCoord bm_width = memDC->m_selected.GetWidth();
         wxCoord bm_height = memDC->m_selected.GetHeight();
 

+        // Get clip coords for the bitmap. If we don't
+        // use wxBitmap::Rescale(), which can clip the
+        // bitmap, these are the same as the original
+        // coordinates
+        wxCoord cx = xx;
+        wxCoord cy = yy;
+        wxCoord cw = ww;
+        wxCoord ch = hh;
+        
+        // interpret userscale of src too
+        double xsc,ysc;
+        memDC->GetUserScale(&xsc,&ysc);
+        bm_width = (int) (bm_width / xsc);
+        bm_height = (int) (bm_height / ysc);
+

         wxCoord bm_ww = XLOG2DEVREL( bm_width );
         wxCoord bm_hh = YLOG2DEVREL( bm_height );
 
         wxCoord bm_ww = XLOG2DEVREL( bm_width );
         wxCoord bm_hh = YLOG2DEVREL( bm_height );
 

-        /* scale bitmap if required */
+        // Scale bitmap if required

         wxBitmap use_bitmap;
         wxBitmap use_bitmap;

-

         if ((bm_width != bm_ww) || (bm_height != bm_hh))
         {
         if ((bm_width != bm_ww) || (bm_height != bm_hh))
         {

-            wxImage image = memDC->m_selected.ConvertToImage();
-            image = image.Scale( bm_ww, bm_hh );
-
-            if (is_mono)
-                use_bitmap = wxBitmap(image.ConvertToMono(255,255,255), 1);
-            else
-                use_bitmap = wxBitmap(image);
+            // This indicates that the blitting code below will get
+            // a clipped bitmap and therefore needs to move the origin
+            // accordingly
+            wxRegion tmp( xx,yy,ww,hh );
+            tmp.Intersect( m_currentClippingRegion );
+            tmp.GetBox(cx,cy,cw,ch);
+            
+            // Scale and clipped bitmap
+            use_bitmap = memDC->m_selected.Rescale(cx-xx,cy-yy,cw,ch,bm_ww,bm_hh);

         }
         else
         {
         }
         else
         {

+            // Don't scale bitmap

             use_bitmap = memDC->m_selected;
         }
 
             use_bitmap = memDC->m_selected;
         }
 

-        /* apply mask if any */
+        // apply mask if any

         GdkBitmap *mask = (GdkBitmap *) NULL;
         if (use_bitmap.GetMask()) mask = use_bitmap.GetMask()->GetBitmap();
 
         GdkBitmap *mask = (GdkBitmap *) NULL;
         if (use_bitmap.GetMask()) mask = use_bitmap.GetMask()->GetBitmap();
 

+        GdkBitmap *new_mask = (GdkBitmap*) NULL;
+        

         if (useMask && mask)
         {
         if (useMask && mask)
         {

-            GdkBitmap *new_mask = (GdkBitmap*) NULL;
-#ifndef __WXGTK20__  // TODO fix crash

             if (!m_currentClippingRegion.IsNull())
             {
                 GdkColor col;
             if (!m_currentClippingRegion.IsNull())
             {
                 GdkColor col;


@@ -1316,20 +1333,22 @@ bool wxWindowDC::DoBlit( wxCoord xdest, wxCoord ydest,
                 col.pixel = 1;
                 gdk_gc_set_foreground( gc, &col );
                 gdk_gc_set_clip_region( gc, m_currentClippingRegion.GetRegion() );
                 col.pixel = 1;
                 gdk_gc_set_foreground( gc, &col );
                 gdk_gc_set_clip_region( gc, m_currentClippingRegion.GetRegion() );

-                gdk_gc_set_clip_origin( gc, -xx, -yy );
+                // was: gdk_gc_set_clip_origin( gc, -xx, -yy );
+                gdk_gc_set_clip_origin( gc, -cx, -cy );

                 gdk_gc_set_fill( gc, GDK_OPAQUE_STIPPLED );
                 gdk_gc_set_stipple( gc, mask );
                 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, bm_ww, bm_hh );
                 gdk_gc_unref( gc );
             }
                 gdk_gc_set_fill( gc, GDK_OPAQUE_STIPPLED );
                 gdk_gc_set_stipple( gc, mask );
                 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, bm_ww, bm_hh );
                 gdk_gc_unref( gc );
             }

-#endif
+

             if (is_mono)
             {
                 if (new_mask)
                     gdk_gc_set_clip_mask( m_textGC, new_mask );
                 else
                     gdk_gc_set_clip_mask( m_textGC, mask );
             if (is_mono)
             {
                 if (new_mask)
                     gdk_gc_set_clip_mask( m_textGC, new_mask );
                 else
                     gdk_gc_set_clip_mask( m_textGC, mask );

-                gdk_gc_set_clip_origin( m_textGC, xx, yy );
+                // was: gdk_gc_set_clip_origin( m_textGC, xx, yy );
+                gdk_gc_set_clip_origin( m_textGC, cx, cy );

             }
             else
             {
             }
             else
             {


@@ -1337,21 +1356,39 @@ bool wxWindowDC::DoBlit( wxCoord xdest, wxCoord ydest,
                     gdk_gc_set_clip_mask( m_penGC, new_mask );
                 else
                     gdk_gc_set_clip_mask( m_penGC, mask );
                     gdk_gc_set_clip_mask( m_penGC, new_mask );
                 else
                     gdk_gc_set_clip_mask( m_penGC, mask );

-                gdk_gc_set_clip_origin( m_penGC, xx, yy );
+                // was: gdk_gc_set_clip_origin( m_penGC, xx, yy );
+                gdk_gc_set_clip_origin( m_penGC, cx, cy );

             }
             }

-            if (new_mask)
-                gdk_bitmap_unref( new_mask );

         }
 
         }
 

-        /* Draw XPixmap or XBitmap, depending on what the wxBitmap contains. For
-           drawing a mono-bitmap (XBitmap) we use the current text GC */
+        // Draw XPixmap or XBitmap, depending on what the wxBitmap contains. For
+        // drawing a mono-bitmap (XBitmap) we use the current text GC

 
         if (is_mono)
 
         if (is_mono)

-            gdk_wx_draw_bitmap( m_window, m_textGC, use_bitmap.GetBitmap(), xsrc, ysrc, xx, yy, ww, hh );
+        {
+#ifdef __WXGTK20__
+            GdkPixmap *bitmap = gdk_pixmap_new( wxGetRootWindow()->window, bm_ww, bm_hh, -1 );
+            GdkGC *gc = gdk_gc_new( bitmap );
+            gdk_gc_set_foreground( gc, m_textForegroundColour.GetColor() );
+            gdk_gc_set_background( gc, m_textBackgroundColour.GetColor() );
+            gdk_wx_draw_bitmap( bitmap, gc, use_bitmap.GetBitmap(), 0, 0, 0, 0, -1, -1 );
+                
+            gdk_draw_drawable( m_window, m_textGC, bitmap, xsrc, ysrc, cx, cy, cw, ch );
+        
+            gdk_bitmap_unref( bitmap );
+            gdk_gc_unref( gc );
+#else
+            // was: gdk_wx_draw_bitmap( m_window, m_textGC, use_bitmap.GetBitmap(), xsrc, ysrc, xx, yy, ww, hh );
+            gdk_wx_draw_bitmap( m_window, m_textGC, use_bitmap.GetBitmap(), xsrc, ysrc, cx, cy, cw, ch );
+#endif
+        }

         else
         else

-            gdk_draw_pixmap( m_window, m_penGC, use_bitmap.GetPixmap(), xsrc, ysrc, xx, yy, ww, hh );
+        {
+            // was: gdk_draw_pixmap( m_window, m_penGC, use_bitmap.GetPixmap(), xsrc, ysrc, xx, yy, ww, hh );
+            gdk_draw_pixmap( m_window, m_penGC, use_bitmap.GetPixmap(), xsrc, ysrc, cx, cy, cw, ch );
+        }

 
 

-        /* remove mask again if any */
+        // remove mask again if any

         if (useMask && mask)
         {
             if (is_mono)
         if (useMask && mask)
         {
             if (is_mono)


@@ -1369,49 +1406,32 @@ bool wxWindowDC::DoBlit( wxCoord xdest, wxCoord ydest,
                     gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
             }
         }
                     gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
             }
         }

+        
+        if (new_mask)
+            gdk_bitmap_unref( new_mask );

     }
     }

-    else /* use_bitmap_method */
+    else // use_bitmap_method

     {
         if ((width != ww) || (height != hh))
         {
     {
         if ((width != ww) || (height != hh))
         {

-            /* draw source window into a bitmap as we cannot scale
-               a window in contrast to a bitmap. this would actually
-               work with memory dcs as well, but we'd lose the mask
-               information and waste one step in this process since
-               a memory already has a bitmap. all this is slightly
-               inefficient as we could take an XImage directly from
-               an X window, but we'd then also have to care that
-               the window is not outside the screen (in which case
-               we'd get a BadMatch or what not).
-               Is a double XGetImage and combined XGetPixel and
-               XPutPixel really faster? I'm not sure. look at wxXt
-               for a different implementation of the same problem. */
-
-            wxBitmap bitmap( width, height );
-
-            /* copy including child window contents */
-            gdk_gc_set_subwindow( m_penGC, GDK_INCLUDE_INFERIORS );
-            gdk_window_copy_area( bitmap.GetPixmap(), m_penGC, 0, 0,
-                                  srcDC->GetWindow(),
-                                  xsrc, ysrc, width, height );
-            gdk_gc_set_subwindow( m_penGC, GDK_CLIP_BY_CHILDREN );
-
-            /* scale image */
-            wxImage image = bitmap.ConvertToImage();
-            image = image.Scale( ww, hh );
-
-            /* convert to bitmap */
-            bitmap = wxBitmap(image);
-
-            /* draw scaled bitmap */
-            gdk_draw_pixmap( m_window, m_penGC, bitmap.GetPixmap(), 0, 0, xx, yy, -1, -1 );
+            // get clip coords
+            wxRegion tmp( xx,yy,ww,hh );
+            tmp.Intersect( m_currentClippingRegion );
+            wxCoord cx,cy,cw,ch;
+            tmp.GetBox(cx,cy,cw,ch);
+            
+            // rescale bitmap   
+            wxBitmap bitmap = memDC->m_selected.Rescale( cx-xx, cy-yy, cw, ch, ww, hh );

 
 

+            // draw scaled bitmap
+            // was: gdk_draw_pixmap( m_window, m_penGC, bitmap.GetPixmap(), 0, 0, xx, yy, -1, -1 );
+            gdk_draw_pixmap( m_window, m_penGC, bitmap.GetPixmap(), 0, 0, cx, cy, -1, -1 );

         }
         else
         {
         }
         else
         {

-            /* No scaling and not a memory dc with a mask either */
+            // No scaling and not a memory dc with a mask either 

 
 

-            /* copy including child window contents */
+            // copy including child window contents

             gdk_gc_set_subwindow( m_penGC, GDK_INCLUDE_INFERIORS );
             gdk_window_copy_area( m_window, m_penGC, xx, yy,
                                   srcDC->GetWindow(),
             gdk_gc_set_subwindow( m_penGC, GDK_INCLUDE_INFERIORS );
             gdk_window_copy_area( m_window, m_penGC, xx, yy,
                                   srcDC->GetWindow(),


@@ -1421,6 +1441,7 @@ bool wxWindowDC::DoBlit( wxCoord xdest, wxCoord ydest,
     }
 
     SetLogicalFunction( old_logical_func );
     }
 
     SetLogicalFunction( old_logical_func );

+    

     return TRUE;
 }
 
     return TRUE;
 }
 


@@ -1456,7 +1477,7 @@ void wxWindowDC::DoDrawText( const wxString &text, wxCoord x, wxCoord y )
 
     int w,h;
     
 
     int w,h;
     

-    if (m_scaleY != 1.0)
+    if (fabs(m_scaleY - 1.0) < 0.00001)

     {
          // If there is a user or actually any scale applied to
          // the device context, scale the font.
     {
          // If there is a user or actually any scale applied to
          // the device context, scale the font.


@@ -2310,6 +2331,25 @@ int wxWindowDC::GetDepth() const
 
 IMPLEMENT_DYNAMIC_CLASS(wxPaintDC, wxClientDC)
 
 
 IMPLEMENT_DYNAMIC_CLASS(wxPaintDC, wxClientDC)
 

+// Limit the paint region to the window size. Sometimes
+// the paint region is too big, and this risks X11 errors
+static void wxLimitRegionToSize(wxRegion& region, const wxSize& sz)
+{
+    wxRect originalRect = region.GetBox();
+    wxRect rect(originalRect);
+    if (rect.width + rect.x > sz.x)
+        rect.width = sz.x - rect.x;
+    if (rect.height + rect.y > sz.y)
+        rect.height = sz.y - rect.y;
+    if (rect != originalRect)
+    {
+        region = wxRegion(rect);
+        wxLogTrace(wxT("painting"), wxT("Limiting region from %d, %d, %d, %d to %d, %d, %d, %d\n"),
+                   originalRect.x, originalRect.y, originalRect.width, originalRect.height,
+                   rect.x, rect.y, rect.width, rect.height);
+    }
+}
+

 wxPaintDC::wxPaintDC( wxWindow *win )
          : wxClientDC( win )
 {
 wxPaintDC::wxPaintDC( wxWindow *win )
          : wxClientDC( win )
 {


@@ -2317,21 +2357,23 @@ wxPaintDC::wxPaintDC( wxWindow *win )
     if (!win->m_clipPaintRegion)
         return;
 
     if (!win->m_clipPaintRegion)
         return;
 

+    wxSize sz = win->GetSize();

     m_paintClippingRegion = win->GetUpdateRegion();
     m_paintClippingRegion = win->GetUpdateRegion();

+    wxLimitRegionToSize(m_paintClippingRegion, sz);
+    

     GdkRegion *region = m_paintClippingRegion.GetRegion();
     if ( region )
     {
     GdkRegion *region = m_paintClippingRegion.GetRegion();
     if ( region )
     {

-        m_paintClippingRegion = win->GetUpdateRegion();
-        GdkRegion *region = m_paintClippingRegion.GetRegion();
-        if ( region )
-        {
-            m_currentClippingRegion.Union( m_paintClippingRegion );
+        m_currentClippingRegion.Union( m_paintClippingRegion );
+        wxLimitRegionToSize(m_currentClippingRegion, sz);

 
 

-            gdk_gc_set_clip_region( m_penGC, region );
-            gdk_gc_set_clip_region( m_brushGC, region );
-            gdk_gc_set_clip_region( m_textGC, region );
-            gdk_gc_set_clip_region( m_bgGC, region );
-        }
+        if (sz.x <= 0 || sz.y <= 0)
+            return ;
+
+        gdk_gc_set_clip_region( m_penGC, region );
+        gdk_gc_set_clip_region( m_brushGC, region );
+        gdk_gc_set_clip_region( m_textGC, region );
+        gdk_gc_set_clip_region( m_bgGC, region );

     }
 #endif // USE_PAINT_REGION
 }
     }
 #endif // USE_PAINT_REGION
 }