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1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 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 #include "ui/base/touch/touch_device.h" | 5 #include "ui/base/touch/touch_device.h" |
6 | 6 |
7 #include "jni/TouchDevice_jni.h" | |
8 #include "ui/base/touch/touch_device_android_initialization.h" | |
Ted C
2014/03/05 21:14:26
hmm...this name is a bit odd to me. I might just
bokan
2014/03/05 22:49:20
Went with the latter.
| |
9 | |
10 using namespace base::android; | |
Ted C
2014/03/05 21:14:26
Since the usage is pretty small, I would leave thi
bokan
2014/03/05 22:49:20
Done.
| |
11 | |
7 namespace ui { | 12 namespace ui { |
8 | 13 |
9 bool IsTouchDevicePresent() { | 14 bool IsTouchDevicePresent() { |
10 return true; | 15 return true; |
11 } | 16 } |
12 | 17 |
13 // Looks like the best we can do here is detect 1, 2+, or 5+ by | |
14 // feature detecting: | |
15 // FEATURE_TOUCHSCREEN (1), | |
16 // FEATURE_TOUCHSCREEN_MULTITOUCH (2), | |
17 // FEATURE_TOUCHSCREEN_MULTITOUCH_DISTINCT (2+), or | |
18 // FEATURE_TOUCHSCREEN_MULTITOUCH_JAZZHANDS (5+) | |
19 // | |
20 // Probably start from the biggest and detect down the list until we | |
21 // find one that's supported and return its value. | |
22 int MaxTouchPoints() { | 18 int MaxTouchPoints() { |
23 return kMaxTouchPointsUnknown; | 19 JNIEnv* env = AttachCurrentThread(); |
20 DCHECK(env); | |
Ted C
2014/03/05 21:14:26
Do we DCHECK any other usages of AttachCurrentThre
bokan
2014/03/05 22:49:20
Done.
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21 | |
22 jobject context = base::android::GetApplicationContext(); | |
23 DCHECK(context); | |
24 | |
25 jint max_touch_points = Java_TouchDevice_maxTouchPoints(env, context); | |
26 return static_cast<int>(max_touch_points); | |
27 } | |
28 | |
29 bool RegisterTouchDeviceAndroid(JNIEnv* env) { | |
30 return RegisterNativesImpl(env); | |
24 } | 31 } |
25 | 32 |
26 } // namespace ui | 33 } // namespace ui |
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