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 #include "content/browser/renderer_host/input/input_router_config_helper.h" 6 7 #include "base/command_line.h" 8 #include "content/public/common/content_switches.h" 9 #include "ui/events/gesture_detection/gesture_detector.h" 10 11 #if defined(USE_AURA) 12 #include "ui/events/gestures/gesture_configuration.h" 13 #elif defined(OS_ANDROID) 14 #include "ui/gfx/android/view_configuration.h" 15 #include "ui/gfx/screen.h" 16 #endif 17 18 namespace content { 19 namespace { 20 21 #if defined(USE_AURA) 22 GetGestureEventQueueConfig()23GestureEventQueue::Config GetGestureEventQueueConfig() { 24 GestureEventQueue::Config config; 25 26 config.debounce_interval = base::TimeDelta::FromMilliseconds( 27 ui::GestureConfiguration::scroll_debounce_interval_in_ms()); 28 29 config.touchscreen_tap_suppression_config.enabled = true; 30 config.touchscreen_tap_suppression_config.max_cancel_to_down_time = 31 base::TimeDelta::FromMilliseconds( 32 ui::GestureConfiguration::fling_max_cancel_to_down_time_in_ms()); 33 34 config.touchscreen_tap_suppression_config.max_tap_gap_time = 35 base::TimeDelta::FromMilliseconds(static_cast<int>( 36 ui::GestureConfiguration::semi_long_press_time_in_seconds() * 1000)); 37 38 config.touchpad_tap_suppression_config.enabled = true; 39 config.touchpad_tap_suppression_config.max_cancel_to_down_time = 40 base::TimeDelta::FromMilliseconds( 41 ui::GestureConfiguration::fling_max_cancel_to_down_time_in_ms()); 42 43 config.touchpad_tap_suppression_config.max_tap_gap_time = 44 base::TimeDelta::FromMilliseconds(static_cast<int>( 45 ui::GestureConfiguration::fling_max_tap_gap_time_in_ms() * 1000)); 46 47 return config; 48 } 49 GetTouchEventQueueConfig()50TouchEventQueue::Config GetTouchEventQueueConfig() { 51 TouchEventQueue::Config config; 52 53 config.touchmove_slop_suppression_length_dips = 54 ui::GestureConfiguration::max_touch_move_in_pixels_for_click(); 55 56 return config; 57 } 58 59 #elif defined(OS_ANDROID) 60 61 // Default time allowance for the touch ack delay before the touch sequence is 62 // cancelled. 63 const int kTouchAckTimeoutDelayMs = 200; 64 65 GestureEventQueue::Config GetGestureEventQueueConfig() { 66 GestureEventQueue::Config config; 67 68 config.touchscreen_tap_suppression_config.enabled = true; 69 config.touchscreen_tap_suppression_config.max_cancel_to_down_time = 70 base::TimeDelta::FromMilliseconds( 71 gfx::ViewConfiguration::GetTapTimeoutInMs()); 72 config.touchscreen_tap_suppression_config.max_tap_gap_time = 73 base::TimeDelta::FromMilliseconds( 74 gfx::ViewConfiguration::GetLongPressTimeoutInMs()); 75 76 return config; 77 } 78 79 TouchEventQueue::Config GetTouchEventQueueConfig() { 80 TouchEventQueue::Config config; 81 82 config.touch_ack_timeout_delay = 83 base::TimeDelta::FromMilliseconds(kTouchAckTimeoutDelayMs); 84 config.touch_ack_timeout_supported = true; 85 86 const double touch_slop_length_pixels = 87 static_cast<double>(gfx::ViewConfiguration::GetTouchSlopInPixels()); 88 const double device_scale_factor = 89 gfx::Screen::GetNativeScreen()->GetPrimaryDisplay().device_scale_factor(); 90 config.touchmove_slop_suppression_length_dips = 91 touch_slop_length_pixels / device_scale_factor; 92 93 return config; 94 } 95 96 #else 97 98 GestureEventQueue::Config GetGestureEventQueueConfig() { 99 return GestureEventQueue::Config(); 100 } 101 102 TouchEventQueue::Config GetTouchEventQueueConfig() { 103 TouchEventQueue::Config config; 104 config.touchmove_slop_suppression_length_dips = 105 ui::GestureDetector::Config().touch_slop; 106 return config; 107 } 108 109 #endif 110 GetTouchScrollingMode()111TouchEventQueue::TouchScrollingMode GetTouchScrollingMode() { 112 std::string modeString = 113 base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII( 114 switches::kTouchScrollingMode); 115 if (modeString == switches::kTouchScrollingModeAsyncTouchmove) 116 return TouchEventQueue::TOUCH_SCROLLING_MODE_ASYNC_TOUCHMOVE; 117 if (modeString == switches::kTouchScrollingModeSyncTouchmove) 118 return TouchEventQueue::TOUCH_SCROLLING_MODE_SYNC_TOUCHMOVE; 119 if (modeString == switches::kTouchScrollingModeTouchcancel) 120 return TouchEventQueue::TOUCH_SCROLLING_MODE_TOUCHCANCEL; 121 if (modeString != "") 122 LOG(ERROR) << "Invalid --touch-scrolling-mode option: " << modeString; 123 return TouchEventQueue::TOUCH_SCROLLING_MODE_DEFAULT; 124 } 125 126 } // namespace 127 GetInputRouterConfigForPlatform()128InputRouterImpl::Config GetInputRouterConfigForPlatform() { 129 InputRouterImpl::Config config; 130 config.gesture_config = GetGestureEventQueueConfig(); 131 config.touch_config = GetTouchEventQueueConfig(); 132 config.touch_config.touch_scrolling_mode = GetTouchScrollingMode(); 133 return config; 134 } 135 136 } // namespace content 137