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Fix setposition redraw logic

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1370 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo 2008-12-01 15:13:33 +00:00
parent 38ea9f14b7
commit 676c0e2798
1 changed files with 6 additions and 3 deletions
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9
graphics/nxbe/nxbe_setposition.c
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@ -81,6 +81,7 @@
void nxbe_setposition(FAR struct nxbe_window_s *wnd,
FAR const struct nxgl_point_s *pos)
{
struct nxgl_rect_s before;
struct nxgl_rect_s rect;
#ifdef CONFIG_DEBUG
@ -101,13 +102,15 @@ void nxbe_setposition(FAR struct nxbe_window_s *wnd,
/* Add the new window origin back into the bounding box */
nxgl_rectcopy(&before, &wnd->bounds);
nxgl_rectoffset(&wnd->bounds, &rect, wnd->origin.x, wnd->origin.y);
/* Clip the rectangle so that is lies with the screen defined by the
* background window.
/* Get the union of the 'before' bounding box and the 'after' bounding
* this union is the region of the display that must be updated.
*/
nxgl_rectintersect(&rect, &wnd->bounds, &wnd->be->bkgd.bounds);
nxgl_rectunion(&rect, &before, &wnd->bounds);
nxgl_rectintersect(&rect, &rect, &wnd->be->bkgd.bounds);
/* Then redraw this window AND all windows below it. Having moved the
* window, we may have exposed previoulsy obscured portions of windows