src/ui/events/gesture_detection/gesture_config_helper_aura.cc

   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.
   4
   5 // MSVC++ requires this to be set before any other includes to get M_PI.
   6 #define _USE_MATH_DEFINES
   7
   8 #include "ui/events/gesture_detection/gesture_config_helper.h"
   9
  10 #include <cmath>
  11
  12 #include "ui/events/gestures/gesture_configuration.h"
  13 #include "ui/gfx/screen.h"
  14
  15 namespace ui {
  16 namespace {
  17
  18 GestureDetector::Config DefaultGestureDetectorConfig() {
  19   GestureDetector::Config config;
  20
  21   config.longpress_timeout = base::TimeDelta::FromMilliseconds(
  22       GestureConfiguration::long_press_time_in_seconds() * 1000.);
  23   config.showpress_timeout = base::TimeDelta::FromMilliseconds(
  24       GestureConfiguration::show_press_delay_in_ms());
  25   config.double_tap_timeout = base::TimeDelta::FromMilliseconds(
  26       GestureConfiguration::semi_long_press_time_in_seconds() * 1000.);
  27   config.touch_slop =
  28       GestureConfiguration::max_touch_move_in_pixels_for_click();
  29   config.double_tap_slop =
  30       GestureConfiguration::max_distance_between_taps_for_double_tap();
  31   config.minimum_fling_velocity =
  32       GestureConfiguration::min_scroll_velocity();
  33   config.maximum_fling_velocity =
  34       GestureConfiguration::fling_velocity_cap();
  35   config.swipe_enabled = true;
  36   config.minimum_swipe_velocity = GestureConfiguration::min_swipe_speed();
  37   config.maximum_swipe_deviation_angle =
  38       atan2(1.f, GestureConfiguration::max_swipe_deviation_ratio()) * 180.0f /
  39       static_cast<float>(M_PI);
  40
  41   return config;
  42 }
  43
  44 ScaleGestureDetector::Config DefaultScaleGestureDetectorConfig() {
  45   ScaleGestureDetector::Config config;
  46
  47   config.gesture_detector_config = DefaultGestureDetectorConfig();
  48   config.min_scaling_touch_major = GestureConfiguration::default_radius() * 2;
  49   config.min_scaling_span = GestureConfiguration::min_scaling_span_in_pixels();
  50   return config;
  51 }
  52
  53 }  // namespace
  54
  55 GestureProvider::Config DefaultGestureProviderConfig() {
  56   GestureProvider::Config config;
  57   config.display = gfx::Screen::GetNativeScreen()->GetPrimaryDisplay();
  58   config.gesture_detector_config = DefaultGestureDetectorConfig();
  59   config.scale_gesture_detector_config = DefaultScaleGestureDetectorConfig();
  60   config.gesture_begin_end_types_enabled = true;
  61   return config;
  62 }
  63
  64 }  // namespace ui