content/browser/renderer_host/input/input_router_config_helper.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 #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
  23 GestureEventQueue::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
  50 TouchEventQueue::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
 111 TouchEventQueue::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
 128 InputRouterImpl::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