Must redraw larger of two sizes

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1373 42af7a65-404d-4744-a932-0658087f49c3

1 files changed, 14 insertions, 4 deletions

diff --git a/nuttx/graphics/nxbe/nxbe_setsize.c b/nuttx/graphics/nxbe/nxbe_setsize.c
index a736669f3..77e9653d7 100644
--- a/nuttx/graphics/nxbe/nxbe_setsize.c
+++ b/nuttx/graphics/nxbe/nxbe_setsize.c
@@ -81,7 +81,7 @@
 void nxbe_setsize(FAR struct nxbe_window_s *wnd,
                   FAR const struct nxgl_rect_s *size)
 {
-  struct nxgl_rect_s rect;
+  struct nxgl_rect_s bounds;
 
 #ifdef CONFIG_DEBUG
   if (!wnd)
@@ -90,22 +90,32 @@ void nxbe_setsize(FAR struct nxbe_window_s *wnd,
     }
 #endif
 
-  /* Add the window origin to get the bounding box */
+  /* Save the before size of the window's bounding box */
+
+  nxgl_rectcopy(&bounds, &wnd->bounds);
+
+  /* Add the window origin to supplied size get the new window bounding box */
 
   nxgl_rectoffset(&wnd->bounds, size, wnd->origin.x, wnd->origin.y);
 
+  /* We need to update the larger of the two rectangles.  That will be the
+   * union of the before and after sizes.
+   */
+
+  nxgl_rectunion(&bounds, &bounds, &wnd->bounds);
+
   /* Clip the bounding box so that is lies with the screen defined by the
    * background window.
    */
 
-  nxgl_rectintersect(&rect, &wnd->bounds, &wnd->be->bkgd.bounds);
+  nxgl_rectintersect(&bounds, &bounds, &wnd->be->bkgd.bounds);
 
   /* Then redraw this window AND all windows below it. Having resized the
    * window, we may have exposed previoulsy obscured portions of windows
    * below this one.
    */
 
-  nxbe_redrawbelow(wnd->be, wnd, &rect);
+  nxbe_redrawbelow(wnd->be, wnd, &bounds);
 
   /* Report the new size/position */