1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
|
// 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/events/gesture_detection/gesture_configuration.h"
#include "base/command_line.h"
#include "ui/events/event_switches.h"
namespace ui {
namespace {
class GestureConfigurationAura : public GestureConfiguration {
public:
~GestureConfigurationAura() override {
}
static GestureConfigurationAura* GetInstance() {
return Singleton<GestureConfigurationAura>::get();
}
private:
GestureConfigurationAura() : GestureConfiguration() {
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_min_scaling_touch_major(default_radius() * 2);
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);
}
friend struct DefaultSingletonTraits<GestureConfigurationAura>;
DISALLOW_COPY_AND_ASSIGN(GestureConfigurationAura);
};
} // namespace
// Create a GestureConfigurationAura singleton instance when using aura.
GestureConfiguration* GestureConfiguration::GetInstance() {
return GestureConfigurationAura::GetInstance();
}
} // namespace ui
|
