Index: LayoutTests/fast/repaint/position-change-keeping-geometry.html |
diff --git a/LayoutTests/fast/repaint/position-change-keeping-geometry.html b/LayoutTests/fast/repaint/position-change-keeping-geometry.html |
new file mode 100644 |
index 0000000000000000000000000000000000000000..8901d457e87c11e8bae2c9588092ce9b25dee07d |
--- /dev/null |
+++ b/LayoutTests/fast/repaint/position-change-keeping-geometry.html |
@@ -0,0 +1,49 @@ |
+<!DOCTYPE html> |
+<script src="resources/text-based-repaint.js"></script> |
+<script> |
+function changePositionKeepingGeometry(id, newPosition) { |
+ var target = document.getElementById(id); |
+ var originalTop = target.offsetTop; |
+ var originalLeft = target.offsetLeft; |
+ target.style.position = newPosition; |
+ target.style.top = originalTop + 'px'; |
+ target.style.left = originalLeft + 'px'; |
+} |
+ |
+function repaintTest() |
+{ |
+ changePositionKeepingGeometry('target1', 'absolute'); |
+ changePositionKeepingGeometry('target2', 'absolute'); |
+ changePositionKeepingGeometry('target3', 'fixed'); |
+} |
+onload = runRepaintTest; |
+</script> |
+<style> |
+body { |
+ margin: 0; |
+} |
+div { |
+ width: 100px; |
+ height: 100px; |
+ top: 20px; |
+ background-color: blue; |
+} |
+#target1 { |
+ left: 20px; |
+ position: relative; |
+} |
+#target2 { |
+ left: 220px; |
+ position: fixed; |
+ z-index: 0; |
+} |
+#target3 { |
+ left: 420px; |
+ position: absolute; |
+ z-index: 0; |
+} |
+</style> |
+There should be no invalildations on change of position without actual change of position and size. |
+<div id="target1"></div> |
+<div id="target2"></div> |
+<div id="target3"></div> |