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Side by Side Diff: ui/base/touch/touch_device.h

Issue 853033002: More delete + gfx_unittests (Closed) Base URL: https://github.com/domokit/mojo.git@master
Patch Set: Fix android trybots Created 5 years, 11 months ago
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1 // Copyright (c) 2012 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 #ifndef UI_BASE_TOUCH_TOUCH_DEVICE_H_
6 #define UI_BASE_TOUCH_TOUCH_DEVICE_H_
7
8 #include "ui/base/ui_base_export.h"
9
10 #if defined(OS_ANDROID)
11 #include <jni.h>
12 #endif
13
14
15 namespace ui {
16
17 // Returns true if a touch device is available.
18 UI_BASE_EXPORT bool IsTouchDevicePresent();
19
20 // Returns the maximum number of simultaneous touch contacts supported
21 // by the device. In the case of devices with multiple digitizers (e.g.
22 // multiple touchscreens), the value MUST be the maximum of the set of
23 // maximum supported contacts by each individual digitizer.
24 // For example, suppose a device has 3 touchscreens, which support 2, 5,
25 // and 10 simultaneous touch contacts, respectively. This returns 10.
26 // http://www.w3.org/TR/pointerevents/#widl-Navigator-maxTouchPoints
27 UI_BASE_EXPORT int MaxTouchPoints();
28
29 #if defined(OS_ANDROID)
30 bool RegisterTouchDeviceAndroid(JNIEnv* env);
31 #endif
32
33 } // namespace ui
34
35 #endif // UI_BASE_TOUCH_TOUCH_DEVICE_H_
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