src/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 #include "ui/events/gestures/unified_gesture_detector_enabled.h"
  14 #elif defined(OS_ANDROID)
  15 #include "ui/gfx/android/view_configuration.h"
  16 #include "ui/gfx/screen.h"
  17 #endif
  18
  19 namespace content {
  20 namespace {
  21
  22 #if defined(USE_AURA)
  23
  24 GestureEventQueue::Config GetGestureEventQueueConfig() {
  25   GestureEventQueue::Config config;
  26
  27   config.debounce_interval = base::TimeDelta::FromMilliseconds(
  28       ui::GestureConfiguration::scroll_debounce_interval_in_ms());
  29
  30   config.touchscreen_tap_suppression_config.enabled = true;
  31   config.touchscreen_tap_suppression_config.max_cancel_to_down_time =
  32       base::TimeDelta::FromMilliseconds(
  33           ui::GestureConfiguration::fling_max_cancel_to_down_time_in_ms());
  34
  35   config.touchscreen_tap_suppression_config.max_tap_gap_time =
  36       base::TimeDelta::FromMilliseconds(static_cast<int>(
  37           ui::GestureConfiguration::semi_long_press_time_in_seconds() * 1000));
  38
  39   config.touchpad_tap_suppression_config.enabled = true;
  40   config.touchpad_tap_suppression_config.max_cancel_to_down_time =
  41       base::TimeDelta::FromMilliseconds(
  42           ui::GestureConfiguration::fling_max_cancel_to_down_time_in_ms());
  43
  44   config.touchpad_tap_suppression_config.max_tap_gap_time =
  45       base::TimeDelta::FromMilliseconds(static_cast<int>(
  46           ui::GestureConfiguration::fling_max_tap_gap_time_in_ms() * 1000));
  47
  48   return config;
  49 }
  50
  51 TouchEventQueue::Config GetTouchEventQueueConfig() {
  52   TouchEventQueue::Config config;
  53
  54   config.touchmove_slop_suppression_length_dips =
  55       ui::GestureConfiguration::max_touch_move_in_pixels_for_click();
  56
  57   config.touchmove_slop_suppression_region_includes_boundary =
  58       ui::IsUnifiedGestureDetectorEnabled();
  59
  60   return config;
  61 }
  62
  63 #elif defined(OS_ANDROID)
  64
  65 // Default time allowance for the touch ack delay before the touch sequence is
  66 // cancelled.
  67 const int kTouchAckTimeoutDelayMs = 200;
  68
  69 GestureEventQueue::Config GetGestureEventQueueConfig() {
  70   GestureEventQueue::Config config;
  71
  72   config.touchscreen_tap_suppression_config.enabled = true;
  73   config.touchscreen_tap_suppression_config.max_cancel_to_down_time =
  74       base::TimeDelta::FromMilliseconds(
  75           gfx::ViewConfiguration::GetTapTimeoutInMs());
  76   config.touchscreen_tap_suppression_config.max_tap_gap_time =
  77       base::TimeDelta::FromMilliseconds(
  78           gfx::ViewConfiguration::GetLongPressTimeoutInMs());
  79
  80   return config;
  81 }
  82
  83 TouchEventQueue::Config GetTouchEventQueueConfig() {
  84   TouchEventQueue::Config config;
  85
  86   config.touch_ack_timeout_delay =
  87       base::TimeDelta::FromMilliseconds(kTouchAckTimeoutDelayMs);
  88   config.touch_ack_timeout_supported = true;
  89
  90   const double touch_slop_length_pixels =
  91       static_cast<double>(gfx::ViewConfiguration::GetTouchSlopInPixels());
  92   const double device_scale_factor =
  93       gfx::Screen::GetNativeScreen()->GetPrimaryDisplay().device_scale_factor();
  94   config.touchmove_slop_suppression_length_dips =
  95       touch_slop_length_pixels / device_scale_factor;
  96
  97   return config;
  98 }
  99
 100 #else
 101
 102 GestureEventQueue::Config GetGestureEventQueueConfig() {
 103   return GestureEventQueue::Config();
 104 }
 105
 106 TouchEventQueue::Config GetTouchEventQueueConfig() {
 107   TouchEventQueue::Config config;
 108   config.touchmove_slop_suppression_length_dips =
 109       ui::GestureDetector::Config().touch_slop;
 110   return config;
 111 }
 112
 113 #endif
 114
 115 TouchEventQueue::TouchScrollingMode GetTouchScrollingMode() {
 116   std::string modeString =
 117       CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
 118           switches::kTouchScrollingMode);
 119   if (modeString == switches::kTouchScrollingModeAsyncTouchmove)
 120     return TouchEventQueue::TOUCH_SCROLLING_MODE_ASYNC_TOUCHMOVE;
 121   if (modeString == switches::kTouchScrollingModeSyncTouchmove)
 122     return TouchEventQueue::TOUCH_SCROLLING_MODE_SYNC_TOUCHMOVE;
 123   if (modeString == switches::kTouchScrollingModeTouchcancel)
 124     return TouchEventQueue::TOUCH_SCROLLING_MODE_TOUCHCANCEL;
 125   if (modeString != "")
 126     LOG(ERROR) << "Invalid --touch-scrolling-mode option: " << modeString;
 127   return TouchEventQueue::TOUCH_SCROLLING_MODE_DEFAULT;
 128 }
 129
 130 }  // namespace
 131
 132 InputRouterImpl::Config GetInputRouterConfigForPlatform() {
 133   InputRouterImpl::Config config;
 134   config.gesture_config = GetGestureEventQueueConfig();
 135   config.touch_config = GetTouchEventQueueConfig();
 136   config.touch_config.touch_scrolling_mode = GetTouchScrollingMode();
 137   return config;
 138 }
 139
 140 }  // namespace content