content/common/android/device_info.cc

   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 #include "content/common/android/device_info.h"
   6
   7 #include "base/android/jni_android.h"
   8 #include "base/android/jni_string.h"
   9 #include "base/logging.h"
  10 #include "jni/DeviceInfo_jni.h"
  11
  12 using base::android::AttachCurrentThread;
  13 using base::android::ConvertJavaStringToUTF8;
  14 using base::android::ScopedJavaLocalRef;
  15
  16 namespace content {
  17
  18 DeviceInfo::DeviceInfo() {
  19   JNIEnv* env = AttachCurrentThread();
  20   j_device_info_.Reset(Java_DeviceInfo_create(env,
  21       base::android::GetApplicationContext()));
  22 }
  23
  24 DeviceInfo::~DeviceInfo() {
  25 }
  26
  27 int DeviceInfo::GetHeight() {
  28   JNIEnv* env = AttachCurrentThread();
  29   jint result =
  30       Java_DeviceInfo_getHeight(env, j_device_info_.obj());
  31   return static_cast<int>(result);
  32 }
  33
  34 int DeviceInfo::GetWidth() {
  35   JNIEnv* env = AttachCurrentThread();
  36   jint result =
  37       Java_DeviceInfo_getWidth(env, j_device_info_.obj());
  38   return static_cast<int>(result);
  39 }
  40
  41 int DeviceInfo::GetBitsPerPixel() {
  42   JNIEnv* env = AttachCurrentThread();
  43   jint result =
  44       Java_DeviceInfo_getBitsPerPixel(env, j_device_info_.obj());
  45   return static_cast<int>(result);
  46 }
  47
  48 int DeviceInfo::GetBitsPerComponent() {
  49   JNIEnv* env = AttachCurrentThread();
  50   jint result =
  51       Java_DeviceInfo_getBitsPerComponent(env, j_device_info_.obj());
  52   return static_cast<int>(result);
  53 }
  54
  55 double DeviceInfo::GetDPIScale() {
  56   JNIEnv* env = AttachCurrentThread();
  57   jdouble result =
  58       Java_DeviceInfo_getDPIScale(env, j_device_info_.obj());
  59   return static_cast<double>(result);
  60 }
  61
  62 double DeviceInfo::GetRefreshRate() {
  63   JNIEnv* env = AttachCurrentThread();
  64   jdouble result =
  65       Java_DeviceInfo_getRefreshRate(env, j_device_info_.obj());
  66   return static_cast<double>(result);
  67 }
  68
  69 std::string DeviceInfo::GetNetworkCountryIso() {
  70   JNIEnv* env = AttachCurrentThread();
  71   ScopedJavaLocalRef<jstring> result =
  72       Java_DeviceInfo_getNetworkCountryIso(env, j_device_info_.obj());
  73   return ConvertJavaStringToUTF8(result);
  74 }
  75
  76 bool RegisterDeviceInfo(JNIEnv* env) {
  77   return RegisterNativesImpl(env);
  78 }
  79
  80 }  // namespace content