ui/base/touch/touch_device_android.cc

   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
   3 // found in the LICENSE file.
   4
   5 #include "ui/base/touch/touch_device.h"
   6
   7 #include "base/logging.h"
   8 #include "jni/TouchDevice_jni.h"
   9
  10 namespace ui {
  11
  12 bool IsTouchDevicePresent() {
  13   return true;
  14 }
  15
  16 int MaxTouchPoints() {
  17   JNIEnv* env = base::android::AttachCurrentThread();
  18   jobject context = base::android::GetApplicationContext();
  19   jint max_touch_points = Java_TouchDevice_maxTouchPoints(env, context);
  20   return static_cast<int>(max_touch_points);
  21 }
  22
  23 int GetAvailablePointerTypes() {
  24   JNIEnv* env = base::android::AttachCurrentThread();
  25   jobject context = base::android::GetApplicationContext();
  26   jint available_pointer_types =
  27       Java_TouchDevice_availablePointerTypes(env, context);
  28   return static_cast<int>(available_pointer_types);
  29 }
  30
  31 PointerType GetPrimaryPointerType() {
  32   int available_pointer_types = GetAvailablePointerTypes();
  33   if (available_pointer_types & POINTER_TYPE_COARSE)
  34     return POINTER_TYPE_COARSE;
  35   if (available_pointer_types & POINTER_TYPE_FINE)
  36     return POINTER_TYPE_FINE;
  37   DCHECK_EQ(available_pointer_types, POINTER_TYPE_NONE);
  38   return POINTER_TYPE_NONE;
  39 }
  40
  41 int GetAvailableHoverTypes() {
  42   JNIEnv* env = base::android::AttachCurrentThread();
  43   jobject context = base::android::GetApplicationContext();
  44   jint available_hover_types =
  45       Java_TouchDevice_availableHoverTypes(env, context);
  46   return static_cast<int>(available_hover_types);
  47 }
  48
  49 HoverType GetPrimaryHoverType() {
  50   int available_hover_types = GetAvailableHoverTypes();
  51   if (available_hover_types & HOVER_TYPE_ON_DEMAND)
  52     return HOVER_TYPE_ON_DEMAND;
  53   if (available_hover_types & HOVER_TYPE_HOVER)
  54     return HOVER_TYPE_HOVER;
  55   DCHECK_EQ(available_hover_types, HOVER_TYPE_NONE);
  56   return HOVER_TYPE_NONE;
  57 }
  58
  59 bool RegisterTouchDeviceAndroid(JNIEnv* env) {
  60   return RegisterNativesImpl(env);
  61 }
  62
  63 }  // namespace ui