1 files changed, 75 insertions, 0 deletions
diff --git a/dom/plugins/test/reftest/plugin-background.js b/dom/plugins/test/reftest/plugin-background.js
new file mode 100644
index 000000000..5d24562cf
--- /dev/null
+++ b/dom/plugins/test/reftest/plugin-background.js
@@ -0,0 +1,75 @@
+// The including script sets this for us
+//var NUM_STEPS;
+
+var plugin;
+var left = 1, top = 1, width = 199, height = 199;
+function movePluginTo(x, y, w, h) {
+    left = x; top = y;  width = w; height = h;
+    plugin.width = w;
+    plugin.height = h;
+    plugin.style.left = left + "px";
+    plugin.style.top = top + "px";
+}
+function deltaInBounds(dx,dy, dw,dh) {
+    var l = dx + left;
+    var r = l + width + dw;
+    var t = dy + top;
+    var b = t + height + dh;
+    return (0 <= l && l <= 20 &&
+            0 <= t && t <= 20 &&
+            200 <= r && r <= 220 &&
+            200 <= b && b <= 220);
+}
+
+var initialFrame;
+function start() {
+    window.removeEventListener("MozReftestInvalidate", start, false);
+
+    window.addEventListener("MozAfterPaint", step, false);
+    window.addEventListener("MozPaintWaitFinished", step, false);
+
+    initialFrame = window.mozPaintCount;
+    plugin = document.getElementById("plugin");
+
+    movePluginTo(0,0, 200,200);
+}
+
+var steps = 0;
+var which = "move"; // or "grow"
+var dx = 1, dy = 1, dw = 1, dh = 1;
+function step() {
+    if (++steps >= NUM_STEPS) {
+        window.removeEventListener("MozAfterPaint", step, false);
+        window.removeEventListener("MozPaintWaitFinished", step, false);
+        return finish();
+    }
+
+    var didSomething = false;
+    if (which == "grow") {
+        if (deltaInBounds(0,0, dw,dh)) {
+            movePluginTo(left,top, width+dw, height+dh);
+            didSomething = true;
+        } else {
+            dw = -dw;  dh = -dh;
+        }
+    } else {
+        // "move"
+        if (deltaInBounds(dx,dy, 0,0)) {
+            movePluginTo(left+dx,top+dy, width, height);
+            didSomething = true;
+        } else {
+            dx = -dx;  dy = -dy;
+        }
+    }
+    which = (which == "grow") ? "move" : "grow";
+
+    if (!didSomething) {
+        step();
+    }
+}
+
+function finish() {
+    document.documentElement.removeAttribute("class");
+}
+
+window.addEventListener("MozReftestInvalidate", start, false);