1 // Copyright 2014 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #include "ui/events/gesture_detection/gesture_config_helper.h"
9 #include "base/command_line.h"
10 #include "ui/events/event_switches.h"
11 #include "ui/events/gestures/gesture_configuration.h"
12 #include "ui/gfx/screen.h"
17 GestureDetector::Config
DefaultGestureDetectorConfig() {
18 GestureDetector::Config config
;
20 config
.longpress_timeout
= base::TimeDelta::FromMilliseconds(
21 GestureConfiguration::long_press_time_in_seconds() * 1000.);
22 config
.showpress_timeout
= base::TimeDelta::FromMilliseconds(
23 GestureConfiguration::show_press_delay_in_ms());
24 config
.double_tap_timeout
= base::TimeDelta::FromMilliseconds(
25 GestureConfiguration::semi_long_press_time_in_seconds() * 1000.);
27 GestureConfiguration::max_touch_move_in_pixels_for_click();
28 config
.double_tap_slop
=
29 GestureConfiguration::max_distance_between_taps_for_double_tap();
30 config
.minimum_fling_velocity
=
31 GestureConfiguration::min_scroll_velocity();
32 config
.maximum_fling_velocity
= GestureConfiguration::fling_velocity_cap();
33 config
.swipe_enabled
= true;
34 config
.minimum_swipe_velocity
= GestureConfiguration::min_swipe_speed();
35 config
.maximum_swipe_deviation_angle
=
36 GestureConfiguration::max_swipe_deviation_angle();
37 config
.two_finger_tap_enabled
= true;
38 config
.two_finger_tap_max_separation
=
39 GestureConfiguration::max_distance_for_two_finger_tap_in_pixels();
40 config
.two_finger_tap_timeout
= base::TimeDelta::FromMilliseconds(
41 GestureConfiguration::max_touch_down_duration_in_seconds_for_click() *
47 ScaleGestureDetector::Config
DefaultScaleGestureDetectorConfig() {
48 ScaleGestureDetector::Config config
;
49 double min_pinch_update_distance
=
50 CommandLine::ForCurrentProcess()->HasSwitch(
51 switches::kCompensateForUnstablePinchZoom
)
52 ? GestureConfiguration::min_pinch_update_distance_in_pixels()
56 GestureConfiguration::max_touch_move_in_pixels_for_click() * 2;
57 config
.min_scaling_touch_major
= GestureConfiguration::default_radius() * 2;
58 config
.min_scaling_span
= GestureConfiguration::min_scaling_span_in_pixels();
59 config
.min_pinch_update_span_delta
= min_pinch_update_distance
;
65 GestureProvider::Config
DefaultGestureProviderConfig() {
66 GestureProvider::Config config
;
67 gfx::Screen
* screen
= gfx::Screen::GetScreenByType(gfx::SCREEN_TYPE_NATIVE
);
68 // |screen| is sometimes NULL during tests.
70 config
.display
= screen
->GetPrimaryDisplay();
71 config
.gesture_detector_config
= DefaultGestureDetectorConfig();
72 config
.scale_gesture_detector_config
= DefaultScaleGestureDetectorConfig();
73 config
.gesture_begin_end_types_enabled
= true;
74 // Half the size of the default touch length is a reasonable minimum.
75 config
.min_gesture_bounds_length
= GestureConfiguration::default_radius();