Created attachment 143407 [details] [review]
[lookingGlass] Fix shell_hook_paint_red_border

Review of attachment 143407 [details] [review]:

Looks basically fine.

::: src/shell-drawing.c
@@ +195,3 @@
+                  geom.width, geom.height);
+  cogl_rectangle (geom.width - width, geom.height,
+                  0, geom.height - width);

It's very odd to me to draw a rectangle with negative width and height like this. It should work if everything is implemented correctly, but it's confusing.

@@ +197,3 @@
+                  0, geom.height - width);
+  cogl_rectangle (width, geom.height - width,
+                  0, width);

Or like this