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/gesture_detection/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 // TODO(jdduke): Consolidate router configuration paths using
  23 // ui::GestureConfiguration.
  24 GestureEventQueue::Config GetGestureEventQueueConfig() {
  25   GestureEventQueue::Config config;
  26   ui::GestureConfiguration* gesture_config =
  27       ui::GestureConfiguration::GetInstance();
  28   config.debounce_interval = base::TimeDelta::FromMilliseconds(
  29       gesture_config->scroll_debounce_interval_in_ms());
  30
  31   config.touchscreen_tap_suppression_config.enabled = true;
  32   config.touchscreen_tap_suppression_config.max_cancel_to_down_time =
  33       base::TimeDelta::FromMilliseconds(
  34           gesture_config->fling_max_cancel_to_down_time_in_ms());
  35
  36   config.touchscreen_tap_suppression_config.max_tap_gap_time =
  37       base::TimeDelta::FromMilliseconds(
  38           gesture_config->semi_long_press_time_in_ms());
  39
  40   config.touchpad_tap_suppression_config.enabled = true;
  41   config.touchpad_tap_suppression_config.max_cancel_to_down_time =
  42       base::TimeDelta::FromMilliseconds(
  43           gesture_config->fling_max_cancel_to_down_time_in_ms());
  44
  45   config.touchpad_tap_suppression_config.max_tap_gap_time =
  46       base::TimeDelta::FromMilliseconds(
  47           gesture_config->fling_max_tap_gap_time_in_ms());
  48
  49   return config;
  50 }
  51
  52 TouchEventQueue::Config GetTouchEventQueueConfig() {
  53   return TouchEventQueue::Config();
  54 }
  55
  56 #elif defined(OS_ANDROID)
  57
  58 // Default time allowance for the touch ack delay before the touch sequence is
  59 // cancelled.
  60 const int kTouchAckTimeoutDelayMs = 200;
  61
  62 GestureEventQueue::Config GetGestureEventQueueConfig() {
  63   GestureEventQueue::Config config;
  64
  65   config.touchscreen_tap_suppression_config.enabled = true;
  66   config.touchscreen_tap_suppression_config.max_cancel_to_down_time =
  67       base::TimeDelta::FromMilliseconds(
  68           gfx::ViewConfiguration::GetTapTimeoutInMs());
  69   config.touchscreen_tap_suppression_config.max_tap_gap_time =
  70       base::TimeDelta::FromMilliseconds(
  71           gfx::ViewConfiguration::GetLongPressTimeoutInMs());
  72
  73   // Android WebView may handle root layer flings itself, which prevents
  74   // accurate fling cancel filtering (see |RenderWidgetCompositor::Initialize|).
  75   // TODO(jdduke): Remove this exception when the WebView fling architecture
  76   // is unified with the rest of Chrome, crbug.com/378984.
  77   config.enable_fling_cancel_filtering = false;
  78
  79   return config;
  80 }
  81
  82 TouchEventQueue::Config GetTouchEventQueueConfig() {
  83   TouchEventQueue::Config config;
  84
  85   config.touch_ack_timeout_delay =
  86       base::TimeDelta::FromMilliseconds(kTouchAckTimeoutDelayMs);
  87   config.touch_ack_timeout_supported = true;
  88
  89   return config;
  90 }
  91
  92 #else
  93
  94 GestureEventQueue::Config GetGestureEventQueueConfig() {
  95   return GestureEventQueue::Config();
  96 }
  97
  98 TouchEventQueue::Config GetTouchEventQueueConfig() {
  99   return TouchEventQueue::Config();
 100 }
 101
 102 #endif
 103
 104 }  // namespace
 105
 106 InputRouterImpl::Config GetInputRouterConfigForPlatform() {
 107   InputRouterImpl::Config config;
 108   config.gesture_config = GetGestureEventQueueConfig();
 109   config.touch_config = GetTouchEventQueueConfig();
 110   return config;
 111 }
 112
 113 }  // namespace content