Commit c17a5b1177405d28ea1edabfee67aaef7023c917
2015-02-07T22:40:36
Fixed bug 2866 - testrelative.c: patch to make the orange box wrap around Eric Wasylishen Here's a patch to make the 'testrelative' demo program more useful: it just makes the orange rectangle wrap around. Previously, the orange cursor would just disappear off screen if you move the mouse a lot in one direction, so it was hard to tell if relative mouse mode was still working.
diff --git a/test/testrelative.c b/test/testrelative.c
index 4425cb8..3b6ef81 100644
--- a/test/testrelative.c
+++ b/test/testrelative.c
@@ -49,12 +49,20 @@ loop(){
}
}
for (i = 0; i < state->num_windows; ++i) {
+ SDL_Rect viewport;
SDL_Renderer *renderer = state->renderers[i];
if (state->windows[i] == NULL)
continue;
SDL_SetRenderDrawColor(renderer, 0xA0, 0xA0, 0xA0, 0xFF);
SDL_RenderClear(renderer);
+ /* Wrap the cursor rectangle at the screen edges to keep it visible */
+ SDL_RenderGetViewport(renderer, &viewport);
+ if (rect.x < viewport.x) rect.x += viewport.w;
+ if (rect.y < viewport.y) rect.y += viewport.h;
+ if (rect.x > viewport.x + viewport.w) rect.x -= viewport.w;
+ if (rect.y > viewport.y + viewport.h) rect.y -= viewport.h;
+
DrawRects(renderer, &rect);
SDL_RenderPresent(renderer);