Separate GestureConfigurationCast.

Cast humbly requests the ability to tweak its own gesture configuration.

Bug: b/77490018
Test: no functional change
Change-Id: I3db07364313ffaa072109c578b0d88b38498330a
Reviewed-on: https://chromium-review.googlesource.com/1026552Reviewed-by: Timothy Dresser <tdresser@chromium.org>
Commit-Queue: Kevin Schoedel <kpschoedel@chromium.org>
Cr-Commit-Position: refs/heads/master@{#553337}

ui/events/BUILD.gn

@@ -303,6 +303,8 @@ component("gesture_detection") {
 
   if (is_android) {
     sources += [ "gesture_detection/gesture_configuration_android.cc" ]
+  } else if (is_chromecast) {
+    sources += [ "gesture_detection/gesture_configuration_cast.cc" ]
   } else if (use_aura) {
     sources += [ "gesture_detection/gesture_configuration_aura.cc" ]
   } else {

ui/events/gesture_detection/OWNERS

 tdresser@chromium.org
 
+per-file gesture_configuration_cast.cc=alexst@chromium.org
+per-file gesture_configuration_cast.cc=kpschoedel@chromium.org
+
 # TEAM: input-dev@chromium.org
 # COMPONENT: Blink>Input

ui/events/gesture_detection/gesture_configuration_cast.cc

+// Copyright 2018 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/events/gesture_detection/gesture_configuration.h"
+
+#include "base/command_line.h"
+#include "base/macros.h"
+#include "base/memory/singleton.h"
+#include "ui/events/event_switches.h"
+
+namespace ui {
+namespace {
+
+class GestureConfigurationCast : public GestureConfiguration {
+ public:
+  ~GestureConfigurationCast() override {
+  }
+
+  static GestureConfigurationCast* GetInstance() {
+    return base::Singleton<GestureConfigurationCast>::get();
+  }
+
+ private:
+  GestureConfigurationCast() : GestureConfiguration() {
+    set_double_tap_enabled(false);
+    set_double_tap_timeout_in_ms(semi_long_press_time_in_ms());
+    set_gesture_begin_end_types_enabled(true);
+    set_min_gesture_bounds_length(default_radius());
+    set_min_pinch_update_span_delta(
+        base::CommandLine::ForCurrentProcess()->HasSwitch(
+            switches::kCompensateForUnstablePinchZoom)
+            ? 5
+            : 0);
+    set_velocity_tracker_strategy(VelocityTracker::Strategy::LSQ2_RESTRICTED);
+    set_span_slop(max_touch_move_in_pixels_for_click() * 2);
+    set_swipe_enabled(true);
+    set_two_finger_tap_enabled(true);
+    set_fling_touchpad_tap_suppression_enabled(true);
+    set_fling_touchscreen_tap_suppression_enabled(true);
+  }
+
+  friend struct base::DefaultSingletonTraits<GestureConfigurationCast>;
+  DISALLOW_COPY_AND_ASSIGN(GestureConfigurationCast);
+};
+
+}  // namespace
+
+// Create a GestureConfigurationCast singleton instance when using Chromecast.
+GestureConfiguration* GestureConfiguration::GetPlatformSpecificInstance() {
+  return GestureConfigurationCast::GetInstance();
+}
+
+}  // namespace ui