Proper MouseEvent targeting. Adds a Window method that locates a Window for a given point.

aura/window_unittest.cc

+// Copyright (c) 2011 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 "aura/desktop.h"
+#include "aura/window_delegate.h"
+#include "base/basictypes.h"
+#include "base/compiler_specific.h"
+#include "base/message_loop.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "ui/gfx/canvas_skia.h"
+
+namespace aura {
+namespace internal {
+
+namespace {
+
+// A simple WindowDelegate implementation for these tests. It owns itself
+// (deletes itself when the Window it is attached to is destroyed).
+class TestWindowDelegate : public WindowDelegate {
+ public:
+  TestWindowDelegate(SkColor color) : color_(color) {}
+  virtual ~TestWindowDelegate() {}
+
+  // Overridden from WindowDelegate:
+  virtual bool OnMouseEvent(const MouseEvent& event) OVERRIDE { return false; }
+  virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE {
+    canvas->AsCanvasSkia()->drawColor(color_, SkXfermode::kSrc_Mode);
+  }
+  virtual void OnWindowDestroyed() OVERRIDE {
+    delete this;
+  }
+
+ private:
+  SkColor color_;
+
+  DISALLOW_COPY_AND_ASSIGN(TestWindowDelegate);
+};
+
+class WindowTest : public testing::Test {
+ public:
+  WindowTest() {
+    aura::Desktop::GetInstance()->Show();
+    aura::Desktop::GetInstance()->SetSize(gfx::Size(500, 500));
+  }
+  virtual ~WindowTest() {}
+
+  // Overridden from testing::Test:
+  virtual void SetUp() OVERRIDE {
+  }
+
+  virtual void TearDown() OVERRIDE {
+  }
+
+  Window* CreateTestWindow(SkColor color,
+                           int id,
+                           const gfx::Rect& bounds,
+                           Window* parent) {
+    Window* window = new Window(new TestWindowDelegate(color));
+    window->set_id(id);
+    window->Init();
+    window->SetBounds(bounds, 0);
+    window->SetVisibility(Window::VISIBILITY_SHOWN);
+    window->SetParent(parent);
+    return window;
+  }
+
+  void RunPendingMessages() {
+    MessageLoop main_message_loop(MessageLoop::TYPE_UI);
+    MessageLoopForUI::current()->Run(NULL);
+  }
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(WindowTest);
+};
+
+}

[sky, 2011/08/30 17:54:12]

nit:  // namespace

+
+TEST_F(WindowTest, HitTest) {
+  Window w1(new TestWindowDelegate(SK_ColorWHITE));
+  w1.set_id(1);
+  w1.Init();
+  w1.SetBounds(gfx::Rect(10, 10, 50, 50), 0);
+  w1.SetVisibility(Window::VISIBILITY_SHOWN);
+  w1.SetParent(NULL);
+
+  // Points are in the Window's coordinates.
+  EXPECT_TRUE(w1.HitTest(gfx::Point(1, 1)));
+  EXPECT_FALSE(w1.HitTest(gfx::Point(-1, -1)));
+
+  // TODO(beng): clip Window to parent.
+}
+
+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(
+      CreateTestWindow(SK_ColorMAGENTA, 12, gfx::Rect(10, 420, 25, 25),
+                       w1.get()));
+  scoped_ptr<Window> w121(
+      CreateTestWindow(SK_ColorYELLOW, 121, gfx::Rect(5, 5, 5, 5), w12.get()));
+  scoped_ptr<Window> w13(
+      CreateTestWindow(SK_ColorGRAY, 13, gfx::Rect(5, 470, 50, 50), w1.get()));
+
+  Window* desktop = Desktop::GetInstance()->window();
+  EXPECT_EQ(desktop, desktop->GetEventHandlerForPoint(gfx::Point(5, 5)));
+  EXPECT_EQ(w1.get(), desktop->GetEventHandlerForPoint(gfx::Point(11, 11)));
+  EXPECT_EQ(w11.get(), desktop->GetEventHandlerForPoint(gfx::Point(16, 16)));
+  EXPECT_EQ(w111.get(), desktop->GetEventHandlerForPoint(gfx::Point(21, 21)));
+  EXPECT_EQ(w1111.get(), desktop->GetEventHandlerForPoint(gfx::Point(26, 26)));
+  EXPECT_EQ(w12.get(), desktop->GetEventHandlerForPoint(gfx::Point(21, 431)));
+  EXPECT_EQ(w121.get(), desktop->GetEventHandlerForPoint(gfx::Point(26, 436)));
+  EXPECT_EQ(w13.get(), desktop->GetEventHandlerForPoint(gfx::Point(26, 481)));
+}
+
+}  // namespace internal
+}  // namespace aura
+