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Must redraw larger of two sizes

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1373 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo 2008-12-01 16:33:17 +00:00
parent 403b6abb77
commit ab44f107d3
1 changed files with 14 additions and 4 deletions
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18
graphics/nxbe/nxbe_setsize.c
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@ -81,7 +81,7 @@
void nxbe_setsize(FAR struct nxbe_window_s *wnd, void nxbe_setsize(FAR struct nxbe_window_s *wnd,
FAR const struct nxgl_rect_s *size) FAR const struct nxgl_rect_s *size)
{ {
struct nxgl_rect_s rect; struct nxgl_rect_s bounds;
#ifdef CONFIG_DEBUG #ifdef CONFIG_DEBUG
if (!wnd) if (!wnd)
@ -90,22 +90,32 @@ void nxbe_setsize(FAR struct nxbe_window_s *wnd,
} }
#endif #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); 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 /* Clip the bounding box so that is lies with the screen defined by the
* background window. * 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 /* Then redraw this window AND all windows below it. Having resized the
* window, we may have exposed previoulsy obscured portions of windows * window, we may have exposed previoulsy obscured portions of windows
* below this one. * below this one.
*/ */
nxbe_redrawbelow(wnd->be, wnd, &rect); nxbe_redrawbelow(wnd->be, wnd, &bounds);
/* Report the new size/position */ /* Report the new size/position */