master c52b58d290: Add some optimizations to ShapeNotify handling

[Po Lu]

branch: master
commit c52b58d2903e3ff212dc1b9e9316ee26fae5aa66
Author: Po Lu <luangruo@yahoo.com>
Commit: Po Lu <luangruo@yahoo.com>

    Add some optimizations to ShapeNotify handling
    
    * src/xterm.c (handle_one_xevent): Do bounding rect
    optimizations on ShapeNotify events as well.
---
 src/xterm.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/src/xterm.c b/src/xterm.c
index 28311f94e9..a92c34396c 100644
--- a/src/xterm.c
+++ b/src/xterm.c
@@ -15987,6 +15987,20 @@ handle_one_xevent (struct x_display_info *dpyinfo,
                      tem->n_input_rects = -1;
                    }
 
+                 /* And the common case where there is no input rect and the
+                    bouding rect equals the window dimensions.  */
+
+                 if (tem->n_input_rects == -1
+                     && tem->n_bounding_rects == 1
+                     && tem->bounding_rects[0].width == tem->width
+                     && tem->bounding_rects[0].height == tem->height
+                     && tem->bounding_rects[0].x == -tem->border_width
+                     && tem->bounding_rects[0].y == -tem->border_width)
+                   {
+                     xfree (tem->bounding_rects);
+                     tem->n_bounding_rects = -1;
+                   }
+
                  break;
                }
            }