[Android] Composited selection handle rendering

content/browser/renderer_host/input/touch_handle_unittest.cc

Index: content/browser/renderer_host/input/touch_handle_unittest.cc
diff --git a/content/browser/renderer_host/input/touch_handle_unittest.cc b/content/browser/renderer_host/input/touch_handle_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..f7ff11137754785740db3f2702b95be3f484a9f2
--- /dev/null
+++ b/content/browser/renderer_host/input/touch_handle_unittest.cc
@@ -0,0 +1,433 @@
+// 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 "content/browser/renderer_host/input/touch_handle.h"
+
+#include "testing/gtest/include/gtest/gtest.h"
+#include "ui/events/test/mock_motion_event.h"
+#include "ui/gfx/geometry/rect_f.h"
+
+using ui::test::MockMotionEvent;
+
+namespace content {
+namespace {
+
+const float kDefaultDrawableSize = 10.f;
+
+struct MockDrawableData {
+  MockDrawableData()
+      : orientation(TOUCH_HANDLE_ORIENTATION_UNDEFINED),
+        alpha(0.f),
+        enabled(false),
+        visible(false),
+        rect(0, 0, kDefaultDrawableSize, kDefaultDrawableSize) {}
+  TouchHandleOrientation orientation;
+  float alpha;
+  bool enabled;
+  bool visible;
+  gfx::RectF rect;
+};
+
+class MockTouchHandleDrawable : public TouchHandleDrawable {
+ public:
+  explicit MockTouchHandleDrawable(MockDrawableData* data) : data_(data) {}
+  virtual ~MockTouchHandleDrawable() {}
+
+  virtual void SetEnabled(bool enabled) OVERRIDE { data_->enabled = enabled; }
+
+  virtual void SetOrientation(TouchHandleOrientation orientation) OVERRIDE {
+    data_->orientation = orientation;
+  }
+
+  virtual void SetAlpha(float alpha) OVERRIDE { data_->alpha = alpha; }
+
+  virtual void SetFocus(const gfx::PointF& position) OVERRIDE {
+    // Anchor focus to the top left of the rect (regardless of orientation).
+    data_->rect.set_origin(position);
+  }
+
+  virtual void SetVisible(bool visible) OVERRIDE { data_->visible = visible; }
+
+  virtual bool ContainsPoint(const gfx::PointF& point) const OVERRIDE {
+    return data_->rect.Contains(point);
+  }
+
+ private:
+  MockDrawableData* data_;
+};
+
+}  // namespace
+
+class TouchHandleTest : public testing::Test, public TouchHandleClient {
+ public:
+  TouchHandleTest()
+      : dragging_(false),
+        dragged_(false),
+        tapped_(false),
+        needs_animate_(false) {}
+
+  virtual ~TouchHandleTest() {}
+
+  // TouchHandleClient implementation.
+  virtual void OnHandleDragBegin(const TouchHandle& handle) OVERRIDE {
+    dragging_ = true;
+  }
+
+  virtual void OnHandleDragUpdate(const TouchHandle& handle,
+                                  const gfx::PointF& new_position) OVERRIDE {
+    dragged_ = true;
+    drag_position_ = new_position;
+  }
+
+  virtual void OnHandleDragEnd(const TouchHandle& handle) OVERRIDE {
+    dragging_ = false;
+  }
+
+  virtual void OnHandleTapped(const TouchHandle& handle) OVERRIDE {
+    tapped_ = true;
+  }
+
+  virtual void SetNeedsAnimate() OVERRIDE { needs_animate_ = true; }
+
+  virtual scoped_ptr<TouchHandleDrawable> CreateDrawable() OVERRIDE {
+    return scoped_ptr<TouchHandleDrawable>(
+        new MockTouchHandleDrawable(&drawable_data_));
+  }
+
+  void Animate(TouchHandle& handle) {
+    needs_animate_ = false;
+    base::TimeTicks now = base::TimeTicks::Now();
+    while (handle.Animate(now))
+      now += base::TimeDelta::FromMilliseconds(16);
+  }
+
+  bool GetAndResetHandleDragged() {
+    bool dragged = dragged_;
+    dragged_ = false;
+    return dragged;
+  }
+
+  bool GetAndResetHandleTapped() {
+    bool tapped = tapped_;
+    tapped_ = false;
+    return tapped;
+  }
+
+  bool GetAndResetNeedsAnimate() {
+    bool needs_animate = needs_animate_;
+    needs_animate_ = false;
+    return needs_animate;
+  }
+
+  bool IsDragging() const { return dragging_; }
+  const gfx::PointF& DragPosition() const { return drag_position_; }
+  bool NeedsAnimate() const { return needs_animate_; }
+
+  const MockDrawableData& drawable() { return drawable_data_; }
+
+ private:
+  gfx::PointF drag_position_;
+  bool dragging_;
+  bool dragged_;
+  bool tapped_;
+  bool needs_animate_;
+
+  MockDrawableData drawable_data_;
+};
+
+TEST_F(TouchHandleTest, Visibility) {
+  TouchHandle handle(this, TOUCH_HANDLE_CENTER);
+  EXPECT_FALSE(drawable().visible);
+
+  handle.SetVisible(true, TouchHandle::ANIMATION_NONE);
+  EXPECT_TRUE(drawable().visible);
+  EXPECT_EQ(1.f, drawable().alpha);
+
+  handle.SetVisible(false, TouchHandle::ANIMATION_NONE);
+  EXPECT_FALSE(drawable().visible);
+
+  handle.SetVisible(true, TouchHandle::ANIMATION_NONE);
+  EXPECT_TRUE(drawable().visible);
+  EXPECT_EQ(1.f, drawable().alpha);
+}
+
+TEST_F(TouchHandleTest, VisibilityAnimation) {
+  TouchHandle handle(this, TOUCH_HANDLE_CENTER);
+  ASSERT_FALSE(NeedsAnimate());
+  ASSERT_FALSE(drawable().visible);
+  ASSERT_EQ(0.f, drawable().alpha);
+
+  handle.SetVisible(true, TouchHandle::ANIMATION_SMOOTH);
+  EXPECT_TRUE(NeedsAnimate());
+  EXPECT_TRUE(drawable().visible);
+  EXPECT_EQ(0.f, drawable().alpha);
+
+  Animate(handle);
+  EXPECT_TRUE(drawable().visible);
+  EXPECT_EQ(1.f, drawable().alpha);
+
+  ASSERT_FALSE(NeedsAnimate());
+  handle.SetVisible(false, TouchHandle::ANIMATION_SMOOTH);
+  EXPECT_TRUE(NeedsAnimate());
+  EXPECT_TRUE(drawable().visible);
+  EXPECT_EQ(1.f, drawable().alpha);
+
+  Animate(handle);
+  EXPECT_FALSE(drawable().visible);
+  EXPECT_EQ(0.f, drawable().alpha);
+
+  handle.SetVisible(true, TouchHandle::ANIMATION_NONE);
+  EXPECT_EQ(1.f, drawable().alpha);
+  EXPECT_FALSE(GetAndResetNeedsAnimate());
+  handle.SetVisible(false, TouchHandle::ANIMATION_SMOOTH);
+  EXPECT_EQ(1.f, drawable().alpha);
+  EXPECT_TRUE(GetAndResetNeedsAnimate());
+  handle.SetVisible(true, TouchHandle::ANIMATION_SMOOTH);
+  EXPECT_EQ(1.f, drawable().alpha);
+  EXPECT_FALSE(GetAndResetNeedsAnimate());
+}
+
+TEST_F(TouchHandleTest, Orientation) {
+  TouchHandle handle(this, TOUCH_HANDLE_CENTER);
+  EXPECT_EQ(TOUCH_HANDLE_CENTER, drawable().orientation);
+
+  handle.SetOrientation(TOUCH_HANDLE_LEFT);
+  EXPECT_EQ(TOUCH_HANDLE_LEFT, drawable().orientation);
+
+  handle.SetOrientation(TOUCH_HANDLE_RIGHT);
+  EXPECT_EQ(TOUCH_HANDLE_RIGHT, drawable().orientation);
+
+  handle.SetOrientation(TOUCH_HANDLE_CENTER);
+  EXPECT_EQ(TOUCH_HANDLE_CENTER, drawable().orientation);
+}
+
+TEST_F(TouchHandleTest, Position) {
+  TouchHandle handle(this, TOUCH_HANDLE_CENTER);
+  handle.SetVisible(true, TouchHandle::ANIMATION_NONE);
+
+  gfx::PointF position;
+  EXPECT_EQ(gfx::PointF(), drawable().rect.origin());
+
+  position = gfx::PointF(7.3f, -3.7f);
+  handle.SetPosition(position);
+  EXPECT_EQ(position, drawable().rect.origin());
+
+  position = gfx::PointF(-7.3f, 3.7f);
+  handle.SetPosition(position);
+  EXPECT_EQ(position, drawable().rect.origin());
+}
+
+TEST_F(TouchHandleTest, PositionNotUpdatedWhileFadingOrInvisible) {
+  TouchHandle handle(this, TOUCH_HANDLE_CENTER);
+
+  handle.SetVisible(true, TouchHandle::ANIMATION_NONE);
+  ASSERT_TRUE(drawable().visible);
+  ASSERT_FALSE(NeedsAnimate());
+
+  gfx::PointF old_position(7.3f, -3.7f);
+  handle.SetPosition(old_position);
+  ASSERT_EQ(old_position, drawable().rect.origin());
+
+  handle.SetVisible(false, TouchHandle::ANIMATION_SMOOTH);
+  ASSERT_TRUE(NeedsAnimate());
+
+  gfx::PointF new_position(3.7f, -3.7f);
+  handle.SetPosition(new_position);
+  EXPECT_EQ(old_position, drawable().rect.origin());
+  EXPECT_TRUE(NeedsAnimate());
+
+  // While the handle is fading, the new position should not take affect.
+  base::TimeTicks now = base::TimeTicks::Now();
+  while (handle.Animate(now)) {
+    EXPECT_EQ(old_position, drawable().rect.origin());
+    now += base::TimeDelta::FromMilliseconds(16);
+  }
+
+  // Even after the animation terminates, the new position will not be pushed.
+  EXPECT_EQ(old_position, drawable().rect.origin());
+
+  // As soon as the handle becomes visible, the new position will be pushed.
+  handle.SetVisible(true, TouchHandle::ANIMATION_SMOOTH);
+  EXPECT_EQ(new_position, drawable().rect.origin());
+}
+
+TEST_F(TouchHandleTest, Enabled) {
+  // A newly created handle defaults to enabled.
+  TouchHandle handle(this, TOUCH_HANDLE_CENTER);
+  EXPECT_TRUE(drawable().enabled);
+
+  handle.SetVisible(true, TouchHandle::ANIMATION_SMOOTH);
+  EXPECT_TRUE(GetAndResetNeedsAnimate());
+  EXPECT_EQ(0.f, drawable().alpha);
+  handle.SetEnabled(false);
+  EXPECT_FALSE(drawable().enabled);
+
+  // Dragging should not be allowed while the handle is disabled.
+  base::TimeTicks event_time = base::TimeTicks::Now();
+  const float kOffset = kDefaultDrawableSize / 2.f;
+  MockMotionEvent event(
+      MockMotionEvent::ACTION_DOWN, event_time, kOffset, kOffset);
+  EXPECT_FALSE(handle.WillHandleTouchEvent(event));
+
+  // Disabling mid-animation should cancel the animation.
+  handle.SetEnabled(true);
+  handle.SetVisible(false, TouchHandle::ANIMATION_SMOOTH);
+  EXPECT_TRUE(drawable().visible);
+  EXPECT_TRUE(GetAndResetNeedsAnimate());
+  handle.SetEnabled(false);
+  EXPECT_FALSE(drawable().enabled);
+  EXPECT_FALSE(drawable().visible);
+  EXPECT_FALSE(handle.Animate(base::TimeTicks::Now()));
+
+  // Disabling mid-drag should cancel the drag.
+  handle.SetEnabled(true);
+  handle.SetVisible(true, TouchHandle::ANIMATION_NONE);
+  EXPECT_TRUE(handle.WillHandleTouchEvent(event));
+  EXPECT_TRUE(IsDragging());
+  handle.SetEnabled(false);
+  EXPECT_FALSE(IsDragging());
+  EXPECT_FALSE(handle.WillHandleTouchEvent(event));
+}
+
+TEST_F(TouchHandleTest, Drag) {
+  TouchHandle handle(this, TOUCH_HANDLE_CENTER);
+
+  base::TimeTicks event_time = base::TimeTicks::Now();
+  const float kOffset = kDefaultDrawableSize / 2.f;
+
+  // The handle must be visible to trigger drag.
+  MockMotionEvent event(
+      MockMotionEvent::ACTION_DOWN, event_time, kOffset, kOffset);
+  EXPECT_FALSE(handle.WillHandleTouchEvent(event));
+  EXPECT_FALSE(IsDragging());
+  handle.SetVisible(true, TouchHandle::ANIMATION_NONE);
+
+  // ACTION_DOWN must fall within the drawable region to trigger drag.
+  event = MockMotionEvent(MockMotionEvent::ACTION_DOWN, event_time, 50, 50);
+  EXPECT_FALSE(handle.WillHandleTouchEvent(event));
+  EXPECT_FALSE(IsDragging());
+
+  // Only ACTION_DOWN will trigger drag.
+  event = MockMotionEvent(
+      MockMotionEvent::ACTION_MOVE, event_time, kOffset, kOffset);
+  EXPECT_FALSE(handle.WillHandleTouchEvent(event));
+  EXPECT_FALSE(IsDragging());
+
+  // Start the drag.
+  event = MockMotionEvent(
+      MockMotionEvent::ACTION_DOWN, event_time, kOffset, kOffset);
+  EXPECT_TRUE(handle.WillHandleTouchEvent(event));
+  EXPECT_TRUE(IsDragging());
+
+  event = MockMotionEvent(
+      MockMotionEvent::ACTION_MOVE, event_time, kOffset + 10, kOffset + 15);
+  EXPECT_TRUE(handle.WillHandleTouchEvent(event));
+  EXPECT_TRUE(GetAndResetHandleDragged());
+  EXPECT_TRUE(IsDragging());
+  EXPECT_EQ(gfx::PointF(10, 15), DragPosition());
+
+  event = MockMotionEvent(
+      MockMotionEvent::ACTION_MOVE, event_time, kOffset - 10, kOffset - 15);
+  EXPECT_TRUE(handle.WillHandleTouchEvent(event));
+  EXPECT_TRUE(GetAndResetHandleDragged());
+  EXPECT_TRUE(IsDragging());
+  EXPECT_EQ(gfx::PointF(-10, -15), DragPosition());
+
+  event = MockMotionEvent(MockMotionEvent::ACTION_UP);
+  EXPECT_TRUE(handle.WillHandleTouchEvent(event));
+  EXPECT_FALSE(GetAndResetHandleDragged());
+  EXPECT_FALSE(IsDragging());
+
+  // Non-ACTION_DOWN events after the drag has terminated should not be handled.
+  event = MockMotionEvent(MockMotionEvent::ACTION_CANCEL);
+  EXPECT_FALSE(handle.WillHandleTouchEvent(event));
+}
+
+TEST_F(TouchHandleTest, DragDefersOrientationChange) {
+  TouchHandle handle(this, TOUCH_HANDLE_RIGHT);
+  ASSERT_EQ(drawable().orientation, TOUCH_HANDLE_RIGHT);
+  handle.SetVisible(true, TouchHandle::ANIMATION_NONE);
+
+  MockMotionEvent event(MockMotionEvent::ACTION_DOWN);
+  EXPECT_TRUE(handle.WillHandleTouchEvent(event));
+  EXPECT_TRUE(IsDragging());
+
+  // Orientation changes will be deferred until the drag ends.
+  handle.SetOrientation(TOUCH_HANDLE_LEFT);
+  EXPECT_EQ(TOUCH_HANDLE_RIGHT, drawable().orientation);
+
+  event = MockMotionEvent(MockMotionEvent::ACTION_MOVE);
+  EXPECT_TRUE(handle.WillHandleTouchEvent(event));
+  EXPECT_TRUE(GetAndResetHandleDragged());
+  EXPECT_TRUE(IsDragging());
+  EXPECT_EQ(TOUCH_HANDLE_RIGHT, drawable().orientation);
+
+  event = MockMotionEvent(MockMotionEvent::ACTION_UP);
+  EXPECT_TRUE(handle.WillHandleTouchEvent(event));
+  EXPECT_FALSE(GetAndResetHandleDragged());
+  EXPECT_FALSE(IsDragging());
+  EXPECT_EQ(TOUCH_HANDLE_LEFT, drawable().orientation);
+}
+
+TEST_F(TouchHandleTest, DragDefersFade) {
+  TouchHandle handle(this, TOUCH_HANDLE_CENTER);
+  handle.SetVisible(true, TouchHandle::ANIMATION_NONE);
+
+  MockMotionEvent event(MockMotionEvent::ACTION_DOWN);
+  EXPECT_TRUE(handle.WillHandleTouchEvent(event));
+  EXPECT_TRUE(IsDragging());
+
+  // Fade will be deferred until the drag ends.
+  handle.SetVisible(false, TouchHandle::ANIMATION_SMOOTH);
+  EXPECT_FALSE(NeedsAnimate());
+  EXPECT_TRUE(drawable().visible);
+  EXPECT_EQ(1.f, drawable().alpha);
+
+  event = MockMotionEvent(MockMotionEvent::ACTION_MOVE);
+  EXPECT_TRUE(handle.WillHandleTouchEvent(event));
+  EXPECT_FALSE(NeedsAnimate());
+  EXPECT_TRUE(drawable().visible);
+
+  event = MockMotionEvent(MockMotionEvent::ACTION_UP);
+  EXPECT_TRUE(handle.WillHandleTouchEvent(event));
+  EXPECT_FALSE(IsDragging());
+  EXPECT_TRUE(NeedsAnimate());
+
+  Animate(handle);
+  EXPECT_FALSE(drawable().visible);
+  EXPECT_EQ(0.f, drawable().alpha);
+}
+
+TEST_F(TouchHandleTest, Tap) {
+  TouchHandle handle(this, TOUCH_HANDLE_CENTER);
+  handle.SetVisible(true, TouchHandle::ANIMATION_NONE);
+
+  base::TimeTicks event_time = base::TimeTicks::Now();
+
+  // ACTION_CANCEL shouldn't trigger a tap.
+  MockMotionEvent event(MockMotionEvent::ACTION_DOWN, event_time, 0, 0);
+  EXPECT_TRUE(handle.WillHandleTouchEvent(event));
+  event_time += base::TimeDelta::FromMilliseconds(50);
+  event = MockMotionEvent(MockMotionEvent::ACTION_CANCEL, event_time, 0, 0);
+  EXPECT_TRUE(handle.WillHandleTouchEvent(event));
+  EXPECT_FALSE(GetAndResetHandleTapped());
+
+  // Long press shouldn't trigger a tap.
+  event = MockMotionEvent(MockMotionEvent::ACTION_DOWN, event_time, 0, 0);
+  EXPECT_TRUE(handle.WillHandleTouchEvent(event));
+  event_time += base::TimeDelta::FromMilliseconds(500);
+  event = MockMotionEvent(MockMotionEvent::ACTION_UP, event_time, 0, 0);
+  EXPECT_TRUE(handle.WillHandleTouchEvent(event));
+  EXPECT_FALSE(GetAndResetHandleTapped());
+
+  // Only a brief tap should trigger a tap.
+  event = MockMotionEvent(MockMotionEvent::ACTION_DOWN, event_time, 0, 0);
+  EXPECT_TRUE(handle.WillHandleTouchEvent(event));
+  event_time += base::TimeDelta::FromMilliseconds(50);
+  event = MockMotionEvent(MockMotionEvent::ACTION_UP, event_time, 0, 0);
+  EXPECT_TRUE(handle.WillHandleTouchEvent(event));
+  EXPECT_TRUE(GetAndResetHandleTapped());
+}
+
+}  // namespace content