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| author | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2008-12-01 15:13:33 +0000 |
|---|---|---|
| committer | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2008-12-01 15:13:33 +0000 |
| commit | b9cd0d6d5f21cac0ee3a8b3c561ce921d18dd686 (patch) | |
| tree | 32ea29943fdcd01644f9735aea9b402d79a8d727 /nuttx | |
| parent | d39be926e308cd3a9a009ede595c118ef85c0d4c (diff) | |
| download | px4-nuttx-b9cd0d6d5f21cac0ee3a8b3c561ce921d18dd686.tar.gz px4-nuttx-b9cd0d6d5f21cac0ee3a8b3c561ce921d18dd686.tar.bz2 px4-nuttx-b9cd0d6d5f21cac0ee3a8b3c561ce921d18dd686.zip | |
Fix setposition redraw logic
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1370 42af7a65-404d-4744-a932-0658087f49c3
Diffstat (limited to 'nuttx')
| -rw-r--r-- | nuttx/graphics/nxbe/nxbe_setposition.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/nuttx/graphics/nxbe/nxbe_setposition.c b/nuttx/graphics/nxbe/nxbe_setposition.c index f29644d33..bba946fe6 100644 --- a/nuttx/graphics/nxbe/nxbe_setposition.c +++ b/nuttx/graphics/nxbe/nxbe_setposition.c @@ -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 |