Introduce the MicButtonTargeter class

ui/app_list/views/speech_view_unittest.cc

+// Copyright 2014 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/app_list/views/speech_view.h"
+
+#include "ui/app_list/test/app_list_test_view_delegate.h"
+#include "ui/views/controls/button/image_button.h"
+#include "ui/views/test/widget_test.h"
+
+namespace app_list {
+namespace test {
+
+class SpeechViewTest : public views::test::WidgetTest,
+                       public AppListTestViewDelegate {
+ public:
+  SpeechViewTest() {}
+  virtual ~SpeechViewTest() {}
+
+  // Overridden from testing::Test:
+  virtual void SetUp() OVERRIDE {
+    views::test::WidgetTest::SetUp();
+    widget_ = CreateTopLevelPlatformWidget();
+    widget_->SetBounds(gfx::Rect(0, 0, 300, 200));
+    view_ = new SpeechView(&view_delegate_);
+    widget_->GetContentsView()->AddChildView(view_);
+    view_->SetBoundsRect(widget_->GetContentsView()->GetLocalBounds());
+  }
+
+  virtual void TearDown() OVERRIDE {
+    widget_->CloseNow();
+    views::test::WidgetTest::TearDown();
+  }
+
+ protected:
+  SpeechView* view() { return view_; }
+  views::Widget* widget() { return widget_; }
+
+  int GetToggleSpeechRecognitionCountAndReset() {
+    return view_delegate_.GetToggleSpeechRecognitionCountAndReset();
+  }
+
+ private:
+  AppListTestViewDelegate view_delegate_;
+  views::Widget* widget_;
+  SpeechView* view_;
+
+  DISALLOW_COPY_AND_ASSIGN(SpeechViewTest);
+};
+
+// Tests that clicking within the circular hit-test mask of MicButton invokes
+// SpeechView::ToggleSpeechRecognition() and clicking outside of the
+// hit-test mask does not.
+TEST_F(SpeechViewTest, ClickMicButton) {
+  EXPECT_EQ(0, GetToggleSpeechRecognitionCountAndReset());
+  gfx::Rect screen_bounds(view()->mic_button()->GetBoundsInScreen());
+
+  // Simulate a mouse click in the center of the MicButton.
+  ui::MouseEvent press(ui::ET_MOUSE_PRESSED,
+                       screen_bounds.CenterPoint(),
+                       screen_bounds.CenterPoint(),
+                       ui::EF_LEFT_MOUSE_BUTTON,
+                       0);
+  ui::MouseEvent release(ui::ET_MOUSE_RELEASED,
+                         screen_bounds.CenterPoint(),
+                         screen_bounds.CenterPoint(),
+                         ui::EF_LEFT_MOUSE_BUTTON,
+                         0);
+  widget()->OnMouseEvent(&press);
+  widget()->OnMouseEvent(&release);
+  EXPECT_EQ(1, GetToggleSpeechRecognitionCountAndReset());
+
+  // Simulate a mouse click in the bottom right-hand corner of the
+  // MicButton's view bounds (which would fall outside of its
+  // circular hit-test mask).
+  gfx::Point bottom_right(screen_bounds.right() - 1,
+                          screen_bounds.bottom() - 2);
+  press = ui::MouseEvent(ui::ET_MOUSE_PRESSED,
+                         bottom_right,
+                         bottom_right,
+                         ui::EF_LEFT_MOUSE_BUTTON,
+                         0);
+  release = ui::MouseEvent(ui::ET_MOUSE_RELEASED,
+                           bottom_right,
+                           bottom_right,
+                           ui::EF_LEFT_MOUSE_BUTTON,
+                           0);
+  widget()->OnMouseEvent(&press);
+  widget()->OnMouseEvent(&release);
+  EXPECT_EQ(0, GetToggleSpeechRecognitionCountAndReset());
+}
+
+}  // namespace test
+}  // namespace app_list