Corner Passthrough for Accessibility

ui/chromeos/touch_exploration_controller_unittest.cc

Index: ui/chromeos/touch_exploration_controller_unittest.cc
diff --git a/ui/chromeos/touch_exploration_controller_unittest.cc b/ui/chromeos/touch_exploration_controller_unittest.cc
index b00814b1eb6efc7f6d197292016f8956e693d1a7..6f75a6772fd486bd0d4c8ee9906e47536a062a5f 100644
--- a/ui/chromeos/touch_exploration_controller_unittest.cc
+++ b/ui/chromeos/touch_exploration_controller_unittest.cc
@@ -81,6 +81,8 @@ class MockTouchExplorationControllerDelegate
   virtual void SetOutputLevel(int volume) OVERRIDE {
     volume_changes_.push_back(volume);
   }
+  virtual void PlayEarCon() OVERRIDE {
+  }
 
   const std::vector<float> VolumeChanges() { return volume_changes_; }
   const size_t NumAdjustSounds() { return num_times_adjust_sound_played_; }
@@ -105,6 +107,12 @@ class TouchExplorationControllerTestApi {
     touch_exploration_controller_->OnTapTimerFired();
   }
 
+  void CallLongPressTimerNowForTesting() {
+    DCHECK(touch_exploration_controller_->long_press_timer_.IsRunning());
+    touch_exploration_controller_->long_press_timer_.Stop();
+    touch_exploration_controller_->OnLongPressTimerFired();
+  }
+
   void CallTapTimerNowIfRunningForTesting() {
     if (touch_exploration_controller_->tap_timer_.IsRunning()) {
       touch_exploration_controller_->tap_timer_.Stop();
@@ -133,6 +141,11 @@ class TouchExplorationControllerTestApi {
            touch_exploration_controller_->SLIDE_GESTURE;
   }
 
+  bool IsInCornerPassthroughStateForTesting() const {
+    return touch_exploration_controller_->state_ ==
+           touch_exploration_controller_->CORNER_PASSTHROUGH;
+  }
+
   gfx::Rect BoundsOfRootWindowInDIPForTesting() const {
     return touch_exploration_controller_->root_window_->GetBoundsInScreen();
   }
@@ -234,6 +247,11 @@ class TouchExplorationTest : public aura::test::AuraTestBase {
     touch_exploration_controller_->CallTapTimerNowForTesting();
   }
 
+  void AdvanceSimulatedTimePastLongPressDelay() {
+    simulated_clock_->Advance(base::TimeDelta::FromMilliseconds(1000));
+    touch_exploration_controller_->CallLongPressTimerNowForTesting();
+  }
+
   void AdvanceSimulatedTimePastPotentialTapDelay() {
     simulated_clock_->Advance(base::TimeDelta::FromMilliseconds(1000));
     touch_exploration_controller_->CallTapTimerNowIfRunningForTesting();
@@ -275,11 +293,50 @@ class TouchExplorationTest : public aura::test::AuraTestBase {
     generator_->Dispatch(&second_touch_press);
   }
 
+  // Checks that Corner Passthrough is working. Assumes that corner is the
+  // bottom
+  // left corner or the bottom right corner.
+  void AssertCornerPassthroughWorking(gfx::Point corner,
+                                      gfx::Point passthrough) {
+    ui::TouchEvent first_press(ui::ET_TOUCH_PRESSED, corner, 0, Now());
+    generator_->Dispatch(&first_press);
+
+    AdvanceSimulatedTimePastLongPressDelay();
+    EXPECT_FALSE(IsInGestureInProgressState());
+    EXPECT_FALSE(IsInSlideGestureState());
+    EXPECT_FALSE(IsInTouchToMouseMode());
+    EXPECT_TRUE(IsInCornerPassthroughState());
+
+    // The following events should be passed through.
+    ui::TouchEvent passthrough_press(
+        ui::ET_TOUCH_PRESSED, passthrough, 1, Now());
+    generator_->Dispatch(&passthrough_press);
+    generator_->ReleaseTouchId(1);
+    generator_->PressTouchId(1);
+    EXPECT_FALSE(IsInGestureInProgressState());
+    EXPECT_FALSE(IsInSlideGestureState());
+    EXPECT_TRUE(IsInCornerPassthroughState());
+
+    std::vector<ui::LocatedEvent*> captured_events = GetCapturedLocatedEvents();
+    ASSERT_EQ(3U, captured_events.size());
+    EXPECT_EQ(ui::ET_TOUCH_PRESSED, captured_events[0]->type());
+    EXPECT_EQ(ui::ET_TOUCH_RELEASED, captured_events[1]->type());
+    EXPECT_EQ(ui::ET_TOUCH_PRESSED, captured_events[2]->type());
+    generator_->ReleaseTouchId(1);
+    ClearCapturedEvents();
+
+    generator_->ReleaseTouchId(0);
+    captured_events = GetCapturedLocatedEvents();
+    ASSERT_EQ(0U, captured_events.size());
+    EXPECT_FALSE(IsInTouchToMouseMode());
+    EXPECT_FALSE(IsInCornerPassthroughState());
+    ClearCapturedEvents();
+  }
+
   bool IsInTouchToMouseMode() {
     aura::client::CursorClient* cursor_client =
         aura::client::GetCursorClient(root_window());
-    return cursor_client &&
-           cursor_client->IsMouseEventsEnabled() &&
+    return cursor_client && cursor_client->IsMouseEventsEnabled() &&
            !cursor_client->IsCursorVisible();
   }
 
@@ -296,11 +353,16 @@ class TouchExplorationTest : public aura::test::AuraTestBase {
     return touch_exploration_controller_->IsInSlideGestureStateForTesting();
   }
 
+  bool IsInCornerPassthroughState() {
+    return touch_exploration_controller_
+        ->IsInCornerPassthroughStateForTesting();
+  }
+
   gfx::Rect BoundsOfRootWindowInDIP() {
     return touch_exploration_controller_->BoundsOfRootWindowInDIPForTesting();
   }
 
-  float GetMaxDistanceFromEdge() const{
+  float GetMaxDistanceFromEdge() const {
     return touch_exploration_controller_->GetMaxDistanceFromEdge();
   }
 
@@ -1634,4 +1696,26 @@ TEST_F(TouchExplorationTest, InBoundariesTouchExploration) {
   EXPECT_TRUE(IsInTouchToMouseMode());
 }
 
+// Corner passthrough should turn on if the user first holds down on either the
+// right or left corner past a delay and then places a finger anywhere else on
+// the screen.
+TEST_F(TouchExplorationTest, ActivateLeftCornerPassthrough) {
+  SwitchTouchExplorationMode(true);
+
+  gfx::Rect window = BoundsOfRootWindowInDIP();
+  gfx::Point left_corner(10, window.bottom() - GetMaxDistanceFromEdge() / 2);
+  gfx::Point passthrough(window.right() / 2, window.bottom() / 2);
+  AssertCornerPassthroughWorking(left_corner, passthrough);
+}
+
+TEST_F(TouchExplorationTest, ActivateRightCornerPassthrough) {
+  SwitchTouchExplorationMode(true);
+
+  gfx::Rect window = BoundsOfRootWindowInDIP();
+  gfx::Point right_corner(window.right() - GetMaxDistanceFromEdge() / 2,
+                          window.bottom() - GetMaxDistanceFromEdge() / 2);
+  gfx::Point passthrough(window.right() / 2, window.bottom() / 2);
+  AssertCornerPassthroughWorking(right_corner, passthrough);
+}
+
 }  // namespace ui