1 // Copyright 2013 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.
5 #ifndef UI_GFX_ANDROID_VIEW_CONFIGURATION_H_
6 #define UI_GFX_ANDROID_VIEW_CONFIGURATION_H_
10 #include "ui/gfx/gfx_export.h"
14 // Provides access to Android's ViewConfiguration for gesture-related constants.
15 // Note: All methods may be safely called from any thread.
16 class GFX_EXPORT ViewConfiguration
{
18 static int GetDoubleTapTimeoutInMs();
19 static int GetLongPressTimeoutInMs();
20 static int GetTapTimeoutInMs();
22 // Dimensionless coefficient of friction.
23 static float GetScrollFriction();
25 static int GetMaximumFlingVelocityInDipsPerSecond();
26 static int GetMinimumFlingVelocityInDipsPerSecond();
28 static int GetTouchSlopInDips();
29 static int GetDoubleTapSlopInDips();
31 static int GetMinScalingSpanInDips();
32 static int GetMinScalingTouchMajorInDips();
34 // Registers methods with JNI and returns true if succeeded.
35 static bool RegisterViewConfiguration(JNIEnv
* env
);
40 #endif // UI_GFX_ANDROID_VIEW_CONFIGURATION_H_