- /* apply mask if any */
- GdkBitmap *mask = (GdkBitmap *) NULL;
- if (use_bitmap.GetMask()) mask = use_bitmap.GetMask()->GetBitmap();
-
- if (useMask && mask)
- {
- GdkBitmap *new_mask = (GdkBitmap*) NULL;
- if (!m_currentClippingRegion.IsEmpty())
- {
- GdkColor col;
- new_mask = gdk_pixmap_new( wxRootWindow->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_set_clip_mask( m_brushGC, NULL );
- gdk_gc_set_clip_mask( m_textGC, NULL );
- SetBrush( *wxRED_BRUSH );
- DrawRectangle( 70, 0, 70, 1000 );
- gdk_draw_bitmap( m_window, m_textGC, new_mask, 0, 0, 100, 5, ww, hh );
- gdk_draw_bitmap( m_window, m_textGC, mask, 0, 0, 80, 5, ww, hh );
-*/
- gdk_gc_unref( gc );
- }
-
- 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 );
- }
- 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 );
- }
- 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 */
- if (is_mono)
- gdk_draw_bitmap( m_window, m_textGC, use_bitmap.GetBitmap(), 0, 0, xx, yy, -1, -1 );
- else
- gdk_draw_pixmap( m_window, m_penGC, use_bitmap.GetPixmap(), 0, 0, xx, yy, -1, -1 );
+// Make a new mask from part of a mask and a clip region.
+static GdkPixmap*
+ClipMask(GdkPixmap* mask, GdkRegion* clipRegion, int x, int y, int dst_x, int dst_y, int w, int h)
+{
+ GdkGCValues gcValues;
+ gcValues.foreground.pixel = 0;
+ GdkGC* gc = gdk_gc_new_with_values(mask, &gcValues, GDK_GC_FOREGROUND);
+ GdkPixmap* pixmap = gdk_pixmap_new(mask, w, h, 1);
+ // clear new mask, so clipped areas will be masked
+ gdk_draw_rectangle(pixmap, gc, true, 0, 0, w, h);
+ gdk_gc_set_clip_region(gc, clipRegion);
+ gdk_gc_set_clip_origin(gc, -dst_x, -dst_y);
+ // draw old mask onto new one, with clip
+ gdk_draw_drawable(pixmap, gc, mask, x, y, 0, 0, w, h);
+ g_object_unref(gc);
+ return pixmap;
+}