Eager Gesture Recognition on Aura

ui/events/gestures/gesture_provider_aura_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 "base/memory/scoped_ptr.h"
+#include "base/message_loop/message_loop.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "ui/events/event_utils.h"
+#include "ui/events/gestures/gesture_provider_aura.h"
+
+namespace ui {
+
+class GestureProviderAuraTest : public testing::Test,
+                                public GestureProviderAuraClient {
+ public:
+  GestureProviderAuraTest() {}
+
+  virtual ~GestureProviderAuraTest() {}
+
+  virtual void OnGestureEvent(GestureEvent* event) OVERRIDE {}
+
+  virtual void SetUp() OVERRIDE {
+    provider_.reset(new GestureProviderAura(this));
+  }
+
+  virtual void TearDown() OVERRIDE { provider_.reset(); }
+
+  GestureProviderAura* provider() { return provider_.get(); }
+
+ private:
+  scoped_ptr<GestureProviderAura> provider_;
+  base::MessageLoopForUI message_loop_;
+};
+
+TEST_F(GestureProviderAuraTest, IgnoresExtraPressEvents) {
+  base::TimeDelta time = ui::EventTimeForNow();
+  TouchEvent press1(ET_TOUCH_PRESSED, gfx::PointF(10, 10), 0, time);
+  EXPECT_TRUE(provider()->OnTouchEvent(press1));
+
+  time += base::TimeDelta::FromMilliseconds(10);
+  TouchEvent press2(ET_TOUCH_PRESSED, gfx::PointF(30, 40), 0, time);
+  // Redundant press with same id is ignored.
+  EXPECT_FALSE(provider()->OnTouchEvent(press2));
+}
+
+TEST_F(GestureProviderAuraTest, IgnoresExtraMoveOrReleaseEvents) {
+  base::TimeDelta time = ui::EventTimeForNow();
+  TouchEvent press1(ET_TOUCH_PRESSED, gfx::PointF(10, 10), 0, time);
+  EXPECT_TRUE(provider()->OnTouchEvent(press1));
+
+  time += base::TimeDelta::FromMilliseconds(10);
+  TouchEvent release1(ET_TOUCH_RELEASED, gfx::PointF(30, 40), 0, time);
+  EXPECT_TRUE(provider()->OnTouchEvent(release1));
+
+  time += base::TimeDelta::FromMilliseconds(10);
+  TouchEvent release2(ET_TOUCH_RELEASED, gfx::PointF(30, 45), 0, time);
+  EXPECT_FALSE(provider()->OnTouchEvent(release1));
+
+  time += base::TimeDelta::FromMilliseconds(10);
+  TouchEvent move1(ET_TOUCH_MOVED, gfx::PointF(70, 75), 0, time);
+  EXPECT_FALSE(provider()->OnTouchEvent(move1));
+}
+
+TEST_F(GestureProviderAuraTest, IgnoresIdenticalMoveEvents) {
+  const float kRadiusX = 20;
+  const float kRadiusY = 30;
+  const float kAngle = 120;
+  const float kForce = 40;
+  const int kTouchId0 = 5;
+  const int kTouchId1 = 3;
+
+  base::TimeDelta time = ui::EventTimeForNow();
+  TouchEvent press0_1(ET_TOUCH_PRESSED, gfx::PointF(9, 10), kTouchId0, time);
+  EXPECT_TRUE(provider()->OnTouchEvent(press0_1));
+
+  TouchEvent press1_1(ET_TOUCH_PRESSED, gfx::PointF(40, 40), kTouchId1, time);
+  EXPECT_TRUE(provider()->OnTouchEvent(press1_1));
+
+  time += base::TimeDelta::FromMilliseconds(10);
+  TouchEvent move0_1(ET_TOUCH_MOVED,
+                   gfx::PointF(10, 10),
+                   0,
+                   kTouchId0,
+                   time,
+                   kRadiusX,
+                   kRadiusY,
+                   kAngle,
+                   kForce);
+  EXPECT_TRUE(provider()->OnTouchEvent(move0_1));
+
+  TouchEvent move1_1(ET_TOUCH_MOVED,
+                   gfx::PointF(100, 200),
+                   0,
+                   kTouchId1,
+                   time,
+                   kRadiusX,
+                   kRadiusY,
+                   kAngle,
+                   kForce);
+  EXPECT_TRUE(provider()->OnTouchEvent(move1_1));
+
+  time += base::TimeDelta::FromMilliseconds(10);
+  TouchEvent move0_2(ET_TOUCH_MOVED,
+                     gfx::PointF(10, 10),
+                     0,
+                     kTouchId0,
+                     time,
+                     kRadiusX,
+                     kRadiusY,
+                     kAngle,
+                     kForce);
+  // Nothing has changed, so ignore the move.
+  EXPECT_FALSE(provider()->OnTouchEvent(move0_2));
+
+  TouchEvent move1_2(ET_TOUCH_MOVED,
+                     gfx::PointF(100, 200),
+                     0,
+                     kTouchId1,
+                     time,
+                     kRadiusX,
+                     kRadiusY,
+                     kAngle,
+                     kForce);
+  // Nothing has changed, so ignore the move.
+  EXPECT_FALSE(provider()->OnTouchEvent(move1_2));
+
+  time += base::TimeDelta::FromMilliseconds(10);
+  TouchEvent move0_3(ET_TOUCH_MOVED,
+                     gfx::PointF(70, 75.1f),
+                     0,
+                     kTouchId0,
+                     time,
+                     kRadiusX,
+                     kRadiusY,
+                     kAngle,
+                     kForce);
+  // Position has changed, so don't ignore the move.
+  EXPECT_TRUE(provider()->OnTouchEvent(move0_3));
+
+  time += base::TimeDelta::FromMilliseconds(10);
+  TouchEvent move0_4(ET_TOUCH_MOVED,
+                     gfx::PointF(70, 75.1f),
+                     0,
+                     kTouchId0,
+                     time,
+                     kRadiusX,
+                     kRadiusY + 1,
+                     kAngle,
+                     kForce);
+}
+
+}  // namespace ui