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- // 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_provider_config_helper.h"
- #include "ui/display/screen.h"
- #include "ui/events/gesture_detection/gesture_configuration.h"
- namespace ui {
- namespace {
- constexpr float kSlopScaleForVr = 3.0f;
- class GenericDesktopGestureConfiguration : public GestureConfiguration {
- public:
- // The default GestureConfiguration parameters are already tailored for a
- // desktop environment (Aura).
- GenericDesktopGestureConfiguration() {}
- ~GenericDesktopGestureConfiguration() override {}
- };
- GestureDetector::Config BuildGestureDetectorConfig(
- const GestureConfiguration& gesture_config,
- scoped_refptr<base::SequencedTaskRunner> task_runner) {
- GestureDetector::Config config;
- config.longpress_timeout =
- base::Milliseconds(gesture_config.long_press_time_in_ms());
- config.shortpress_timeout = gesture_config.short_press_time();
- config.showpress_timeout =
- base::Milliseconds(gesture_config.show_press_delay_in_ms());
- config.double_tap_timeout =
- base::Milliseconds(gesture_config.double_tap_timeout_in_ms());
- config.touch_slop = gesture_config.max_touch_move_in_pixels_for_click();
- config.double_tap_slop =
- gesture_config.max_distance_between_taps_for_double_tap();
- config.minimum_fling_velocity = gesture_config.min_fling_velocity();
- config.maximum_fling_velocity = gesture_config.max_fling_velocity();
- config.swipe_enabled = gesture_config.swipe_enabled();
- config.minimum_swipe_velocity = gesture_config.min_swipe_velocity();
- config.maximum_swipe_deviation_angle =
- gesture_config.max_swipe_deviation_angle();
- config.two_finger_tap_enabled = gesture_config.two_finger_tap_enabled();
- config.two_finger_tap_max_separation =
- gesture_config.max_distance_for_two_finger_tap_in_pixels();
- config.two_finger_tap_timeout = base::Milliseconds(
- gesture_config.max_touch_down_duration_for_click_in_ms());
- config.single_tap_repeat_interval = gesture_config.max_tap_count();
- config.velocity_tracker_strategy = gesture_config.velocity_tracker_strategy();
- config.task_runner = task_runner;
- return config;
- }
- ScaleGestureDetector::Config BuildScaleGestureDetectorConfig(
- const GestureConfiguration& gesture_config) {
- ScaleGestureDetector::Config config;
- config.span_slop = gesture_config.span_slop();
- config.min_scaling_span = gesture_config.min_scaling_span_in_pixels();
- config.min_pinch_update_span_delta =
- gesture_config.min_pinch_update_span_delta();
- config.stylus_scale_enabled = gesture_config.stylus_scale_enabled();
- return config;
- }
- GestureProvider::Config BuildGestureProviderConfig(
- const GestureConfiguration& gesture_config,
- scoped_refptr<base::SequencedTaskRunner> task_runner) {
- GestureProvider::Config config;
- config.gesture_detector_config =
- BuildGestureDetectorConfig(gesture_config, task_runner);
- config.scale_gesture_detector_config =
- BuildScaleGestureDetectorConfig(gesture_config);
- config.double_tap_support_for_platform_enabled =
- gesture_config.double_tap_enabled();
- config.gesture_begin_end_types_enabled =
- gesture_config.gesture_begin_end_types_enabled();
- config.min_gesture_bounds_length = gesture_config.min_gesture_bounds_length();
- config.max_gesture_bounds_length = gesture_config.max_gesture_bounds_length();
- return config;
- }
- void TuneGestureProviderConfigForVr(GestureProvider::Config* config) {
- config->gesture_detector_config.touch_slop *= kSlopScaleForVr;
- }
- } // namespace
- GestureProvider::Config GetGestureProviderConfig(
- GestureProviderConfigType type,
- scoped_refptr<base::SequencedTaskRunner> task_runner) {
- GestureProvider::Config config;
- switch (type) {
- case GestureProviderConfigType::CURRENT_PLATFORM:
- config = BuildGestureProviderConfig(*GestureConfiguration::GetInstance(),
- task_runner);
- break;
- case GestureProviderConfigType::CURRENT_PLATFORM_VR:
- config = BuildGestureProviderConfig(*GestureConfiguration::GetInstance(),
- task_runner);
- TuneGestureProviderConfigForVr(&config);
- break;
- case GestureProviderConfigType::GENERIC_DESKTOP:
- config = BuildGestureProviderConfig(GenericDesktopGestureConfiguration(),
- task_runner);
- break;
- case GestureProviderConfigType::GENERIC_MOBILE:
- // The default GestureProvider::Config embeds a mobile configuration.
- break;
- }
- display::Screen* screen = display::Screen::GetScreen();
- // |screen| is sometimes NULL during tests.
- if (screen)
- config.display = screen->GetPrimaryDisplay();
- return config;
- }
- } // namespace ui
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