From 825a978c75fab28b45f8faad734f93c7bbb3dfc4 Mon Sep 17 00:00:00 2001 From: "iamyhw@gmail.com" Date: Mon, 22 Aug 2011 03:31:29 +0000 Subject: [PATCH] dc_hw draw_point cross check. git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1675 bbd45198-f89e-11dd-88c7-29a3b14d5316 --- components/rtgui/common/dc_hw.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/components/rtgui/common/dc_hw.c b/components/rtgui/common/dc_hw.c index c0dac5c6ea..23f7c0aefb 100644 --- a/components/rtgui/common/dc_hw.c +++ b/components/rtgui/common/dc_hw.c @@ -227,7 +227,9 @@ static void rtgui_dc_hw_draw_point(struct rtgui_dc* self, int x, int y) dc = (struct rtgui_dc_hw*) self; x = x + dc->owner->extent.x1; + if(x < dc->owner->extent.x1 || x >= dc->owner->extent.x2) return; y = y + dc->owner->extent.y1; + if(y < dc->owner->extent.y1 || y >= dc->owner->extent.y2) return; /* draw this point */ dc->hw_driver->ops->set_pixel(&(dc->owner->gc.foreground), x, y); -- GitLab