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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/events/gesture_detection/gesture_configuration.h"
#include "ui/gfx/screen.h"
namespace ui {
namespace {
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) {
GestureDetector::Config config;
config.longpress_timeout =
base::TimeDelta::FromMilliseconds(gesture_config.long_press_time_in_ms());
config.showpress_timeout = base::TimeDelta::FromMilliseconds(
gesture_config.show_press_delay_in_ms());
config.double_tap_timeout = base::TimeDelta::FromMilliseconds(
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::TimeDelta::FromMilliseconds(
gesture_config.max_touch_down_duration_for_click_in_ms());
config.velocity_tracker_strategy = gesture_config.velocity_tracker_strategy();
return config;
}
ScaleGestureDetector::Config BuildScaleGestureDetectorConfig(
const GestureConfiguration& gesture_config) {
ScaleGestureDetector::Config config;
config.span_slop = gesture_config.span_slop();
config.min_scaling_touch_major = gesture_config.min_scaling_touch_major();
config.min_scaling_span = gesture_config.min_scaling_span_in_pixels();
config.min_pinch_update_span_delta =
gesture_config.min_pinch_update_span_delta();
return config;
}
GestureProvider::Config BuildGestureProviderConfig(
const GestureConfiguration& gesture_config) {
GestureProvider::Config config;
config.gesture_detector_config = BuildGestureDetectorConfig(gesture_config);
config.scale_gesture_detector_config =
BuildScaleGestureDetectorConfig(gesture_config);
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;
}
} // namespace
GestureProvider::Config GetGestureProviderConfig(
GestureProviderConfigType type) {
GestureProvider::Config config;
switch (type) {
case GestureProviderConfigType::CURRENT_PLATFORM:
config = BuildGestureProviderConfig(*GestureConfiguration::GetInstance());
break;
case GestureProviderConfigType::GENERIC_DESKTOP:
config = BuildGestureProviderConfig(GenericDesktopGestureConfiguration());
break;
case GestureProviderConfigType::GENERIC_MOBILE:
// The default GestureProvider::Config embeds a mobile configuration.
break;
}
gfx::Screen* screen = gfx::Screen::GetScreenByType(gfx::SCREEN_TYPE_NATIVE);
// |screen| is sometimes NULL during tests.
if (screen)
config.display = screen->GetPrimaryDisplay();
return config;
}
} // namespace ui
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