ui/gfx/android/view_configuration.h - Issue 1216933013: [Android] Expose native ViewConfiguration constants as DIPs

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Side by Side Diff: ui/gfx/android/view_configuration.h

Issue 1216933013: [Android] Expose native ViewConfiguration constants as DIPs (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master

Patch Set: Fix comment and add assert Created 5 years, 5 months ago

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1 // Copyright 2013 The Chromium Authors. All rights reserved.	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	2 // Use of this source code is governed by a BSD-style license that can be

3 // found in the LICENSE file.	3 // found in the LICENSE file.

4	4

5 #ifndef UI_GFX_ANDROID_VIEW_CONFIGURATION_H_	5 #ifndef UI_GFX_ANDROID_VIEW_CONFIGURATION_H_

6 #define UI_GFX_ANDROID_VIEW_CONFIGURATION_H_	6 #define UI_GFX_ANDROID_VIEW_CONFIGURATION_H_

7	7

8 #include <jni.h>	8 #include <jni.h>

9	9

10 #include "ui/gfx/gfx_export.h"	10 #include "ui/gfx/gfx_export.h"

11	11

12 namespace gfx {	12 namespace gfx {

13	13

14 // Provides access to Android's ViewConfiguration for gesture-related constants.	14 // Provides access to Android's ViewConfiguration for gesture-related constants.

15 // Note: All methods may be safely called from any thread.	15 // Note: All methods may be safely called from any thread.

16 class GFX_EXPORT ViewConfiguration {	16 class GFX_EXPORT ViewConfiguration {

17 public:	17 public:

18 static int GetDoubleTapTimeoutInMs();	18 static int GetDoubleTapTimeoutInMs();

19 static int GetLongPressTimeoutInMs();	19 static int GetLongPressTimeoutInMs();

20 static int GetTapTimeoutInMs();	20 static int GetTapTimeoutInMs();

21	21

22 // Dimensionless coefficient of friction.	22 // Dimensionless coefficient of friction.

23 static float GetScrollFriction();	23 static float GetScrollFriction();

24	24

25 static int GetMaximumFlingVelocityInPixelsPerSecond();	25 static int GetMaximumFlingVelocityInDipsPerSecond();

26 static int GetMinimumFlingVelocityInPixelsPerSecond();	26 static int GetMinimumFlingVelocityInDipsPerSecond();

27	27

28 static int GetTouchSlopInPixels();	28 static int GetTouchSlopInDips();

29 static int GetDoubleTapSlopInPixels();	29 static int GetDoubleTapSlopInDips();

30	30

31 static int GetMinScalingSpanInPixels();	31 static int GetMinScalingSpanInDips();

32 static int GetMinScalingTouchMajorInPixels();	32 static int GetMinScalingTouchMajorInDips();

33	33

34 // Registers methods with JNI and returns true if succeeded.	34 // Registers methods with JNI and returns true if succeeded.

35 static bool RegisterViewConfiguration(JNIEnv* env);	35 static bool RegisterViewConfiguration(JNIEnv* env);

36 };	36 };

37	37

38 } // namespace gfx	38 } // namespace gfx

39	39

40 #endif // UI_GFX_ANDROID_VIEW_CONFIGURATION_H_	40 #endif // UI_GFX_ANDROID_VIEW_CONFIGURATION_H_

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