app_list: Fix shadow bleeds over launcher button and steals mouse events

ui/aura/window_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/aura/window.h"
 
+#include <utility>
+
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/stringprintf.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/aura/client/capture_client.h"
 #include "ui/aura/client/stacking_client.h"
 #include "ui/aura/client/visibility_client.h"
 #include "ui/aura/event.h"
 #include "ui/aura/layout_manager.h"
 #include "ui/aura/root_window.h"
@@ skipping 298 matching lines @@
   EXPECT_FALSE(w1.HitTest(gfx::Point(-1, -1)));
 
   // We can expand the bounds slightly to track events outside our border.
   w1.set_hit_test_bounds_override_outer(gfx::Insets(-1, -1, -1, -1));
   EXPECT_TRUE(w1.HitTest(gfx::Point(-1, -1)));
   EXPECT_FALSE(w1.HitTest(gfx::Point(-2, -2)));
 
   // TODO(beng): clip Window to parent.
 }
 
+TEST_F(WindowTest, HitTestMask) {
+  Window w1(new MaskedWindowDelegate(gfx::Rect(5, 6, 20, 30)));
+  w1.Init(ui::LAYER_NOT_DRAWN);
+  w1.SetBounds(gfx::Rect(10, 20, 50, 60));
+  w1.Show();
+  w1.SetParent(NULL);
+
+  // Points inside the mask.
+  EXPECT_TRUE(w1.HitTest(gfx::Point(5, 6)));  // top-left
+  EXPECT_TRUE(w1.HitTest(gfx::Point(15, 21)));  // center
+  EXPECT_TRUE(w1.HitTest(gfx::Point(24, 35)));  // bottom-right
+
+  // Points outside the mask.
+  EXPECT_FALSE(w1.HitTest(gfx::Point(0, 0)));
+  EXPECT_FALSE(w1.HitTest(gfx::Point(60, 80)));
+  EXPECT_FALSE(w1.HitTest(gfx::Point(4, 6)));
+  EXPECT_FALSE(w1.HitTest(gfx::Point(5, 5)));
+  EXPECT_FALSE(w1.HitTest(gfx::Point(25, 36)));
+}
+
 TEST_F(WindowTest, GetEventHandlerForPoint) {
   scoped_ptr<Window> w1(
       CreateTestWindow(SK_ColorWHITE, 1, gfx::Rect(10, 10, 500, 500), NULL));
   scoped_ptr<Window> w11(
       CreateTestWindow(SK_ColorGREEN, 11, gfx::Rect(5, 5, 100, 100), w1.get()));
   scoped_ptr<Window> w111(
       CreateTestWindow(SK_ColorCYAN, 111, gfx::Rect(5, 5, 75, 75), w11.get()));
   scoped_ptr<Window> w1111(
       CreateTestWindow(SK_ColorRED, 1111, gfx::Rect(5, 5, 50, 50), w111.get()));
   scoped_ptr<Window> w12(
@@ skipping 1338 matching lines @@
   window13->layer()->set_delegate(NULL);
 
   // Move window1 to the front.  All transients should move with it, and their
   // order should be preserved.
   root->StackChildAtTop(window1.get());
 
   EXPECT_EQ("2 3 1 11 12 13", ChildWindowIDsAsString(root));
 }
 
 class TestVisibilityClient : public client::VisibilityClient {
-public:
+ public:
   explicit TestVisibilityClient(RootWindow* root_window)
       : ignore_visibility_changes_(false) {
     client::SetVisibilityClient(root_window, this);
   }
   virtual ~TestVisibilityClient() {
   }
 
   void set_ignore_visibility_changes(bool ignore_visibility_changes) {
     ignore_visibility_changes_ = ignore_visibility_changes;
   }
@@ skipping 595 matching lines @@
   element->Step(start_time + base::TimeDelta::FromMilliseconds(1000));
 
   // No bounds changed notification at the end of animation since layer
   // delegate is NULL.
   EXPECT_FALSE(delegate.bounds_changed());
   EXPECT_NE("0,0 100x100", window->bounds().ToString());
 }
 
 }  // namespace test
 }  // namespace aura