Cure weirdness when dragging outside of board

[xboard.git] / gtk / xoptions.c

diff --git a/gtk/xoptions.c b/gtk/xoptions.c
index 90a45ea..fb872ce 100644 (file)
--- a/gtk/xoptions.c
+++ b/gtk/xoptions.c
@@ -823,8 +823,15 @@ GraphEventProc(GtkWidget *widget, GdkEvent *event, gpointer gdata)
                         // to give drawing routines opportunity to use it before first expose event
                         // (which are only processed when main gets to the event loop, so after all init!)
                         // so only change when size is no longer good
+               cairo_t *cr;
                if(graph->choice) cairo_surface_destroy((cairo_surface_t *) graph->choice);
                graph->choice = (char**) cairo_image_surface_create (CAIRO_FORMAT_ARGB32, w, h);
+               // paint white, to prevent weirdness when people maximize window and drag pieces over space next to board
+               cr = cairo_create ((cairo_surface_t *) graph->choice);
+               cairo_rectangle (cr, 0, 0, w, h);
+               cairo_set_source_rgba(cr, 1.0, 1.0, 1.0, 1.0);
+               cairo_fill(cr);
+               cairo_destroy (cr);
                break;
            }
            w = eevent->area.width;