Fix:graphics_gtk_drawing_area:Only draw overlays when necessary

git-svn-id: https://navit.svn.sourceforge.net/svnroot/navit/trunk@1671 ffa7fe5e-494d-0410-b361-a75ebd5db220

diff --git a/navit/navit/graphics/gtk_drawing_area/graphics_gtk_drawing_area.c b/navit/navit/graphics/gtk_drawing_area/graphics_gtk_drawing_area.c
index 66bdeac..5ab8f05 100644 (file)
--- a/navit/navit/graphics/gtk_drawing_area/graphics_gtk_drawing_area.c
+++ b/navit/navit/graphics/gtk_drawing_area/graphics_gtk_drawing_area.c
@@ -414,7 +414,7 @@ overlay_draw(struct graphics_priv *parent, struct graphics_priv *overlay, GdkRec
        int x,y;
        int rowstride1,rowstride2;
        int n_channels1,n_channels2;
-       GdkRectangle or;
+       GdkRectangle or,ir;
        struct graphics_gc_priv *bg=overlay->background_gc;
 
        if (parent->overlay_disabled || overlay->overlay_disabled)
@@ -422,6 +422,8 @@ overlay_draw(struct graphics_priv *parent, struct graphics_priv *overlay, GdkRec
        dbg(1,"r->x=%d r->y=%d r->width=%d r->height=%d\n", r->x, r->y, r->width, r->height);
        overlay_rect(parent, overlay, 0, &or);
        dbg(1,"or.x=%d or.y=%d or.width=%d or.height=%d\n", or.x, or.y, or.width, or.height);
+       if (! gdk_rectangle_intersect(r, &or, &ir))
+               return;
        or.x-=r->x;
        or.y-=r->y;
        pixbuf=gdk_pixbuf_get_from_drawable(NULL, overlay->drawable, NULL, 0, 0, 0, 0, or.width, or.height);