ui/gfx/android/shared_device_display_info.cc

   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
   3 // found in the LICENSE file.
   4
   5 #include "ui/gfx/android/shared_device_display_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/DeviceDisplayInfo_jni.h"
  11
  12 namespace gfx {
  13
  14 // static JNI call
  15 static void UpdateSharedDeviceDisplayInfo(JNIEnv* env,
  16                                           const JavaParamRef<jobject>& obj,
  17                                           jint display_height,
  18                                           jint display_width,
  19                                           jint physical_display_height,
  20                                           jint physical_display_width,
  21                                           jint bits_per_pixel,
  22                                           jint bits_per_component,
  23                                           jdouble dip_scale,
  24                                           jint smallest_dip_width,
  25                                           jint rotation_degrees) {
  26   SharedDeviceDisplayInfo::GetInstance()->InvokeUpdate(env, obj,
  27       display_height, display_width,
  28       physical_display_height, physical_display_width,
  29       bits_per_pixel, bits_per_component,
  30       dip_scale, smallest_dip_width, rotation_degrees);
  31 }
  32
  33 // static
  34 SharedDeviceDisplayInfo* SharedDeviceDisplayInfo::GetInstance() {
  35   return Singleton<SharedDeviceDisplayInfo>::get();
  36 }
  37
  38 int SharedDeviceDisplayInfo::GetDisplayHeight() {
  39   base::AutoLock autolock(lock_);
  40   DCHECK_NE(0, display_height_);
  41   return display_height_;
  42 }
  43
  44 int SharedDeviceDisplayInfo::GetDisplayWidth() {
  45   base::AutoLock autolock(lock_);
  46   DCHECK_NE(0, display_width_);
  47   return display_width_;
  48 }
  49
  50 int SharedDeviceDisplayInfo::GetPhysicalDisplayHeight() {
  51   base::AutoLock autolock(lock_);
  52   return physical_display_height_;
  53 }
  54
  55 int SharedDeviceDisplayInfo::GetPhysicalDisplayWidth() {
  56   base::AutoLock autolock(lock_);
  57   return physical_display_width_;
  58 }
  59
  60 int SharedDeviceDisplayInfo::GetBitsPerPixel() {
  61   base::AutoLock autolock(lock_);
  62   DCHECK_NE(0, bits_per_pixel_);
  63   return bits_per_pixel_;
  64 }
  65
  66 int SharedDeviceDisplayInfo::GetBitsPerComponent() {
  67   base::AutoLock autolock(lock_);
  68   DCHECK_NE(0, bits_per_component_);
  69   return bits_per_component_;
  70 }
  71
  72 double SharedDeviceDisplayInfo::GetDIPScale() {
  73   base::AutoLock autolock(lock_);
  74   DCHECK_NE(0, dip_scale_);
  75   return dip_scale_;
  76 }
  77
  78 int SharedDeviceDisplayInfo::GetSmallestDIPWidth() {
  79   base::AutoLock autolock(lock_);
  80   DCHECK_NE(0, smallest_dip_width_);
  81   return smallest_dip_width_;
  82 }
  83
  84 int SharedDeviceDisplayInfo::GetRotationDegrees() {
  85   base::AutoLock autolock(lock_);
  86   return rotation_degrees_;
  87 }
  88
  89 // static
  90 bool SharedDeviceDisplayInfo::RegisterSharedDeviceDisplayInfo(JNIEnv* env) {
  91   return RegisterNativesImpl(env);
  92 }
  93
  94 void SharedDeviceDisplayInfo::InvokeUpdate(JNIEnv* env,
  95                                            jobject obj,
  96                                            jint display_height,
  97                                            jint display_width,
  98                                            jint physical_display_height,
  99                                            jint physical_display_width,
 100                                            jint bits_per_pixel,
 101                                            jint bits_per_component,
 102                                            jdouble dip_scale,
 103                                            jint smallest_dip_width,
 104                                            jint rotation_degrees) {
 105   base::AutoLock autolock(lock_);
 106
 107   UpdateDisplayInfo(env, obj,
 108       display_height, display_width,
 109       physical_display_height, physical_display_width,
 110       bits_per_pixel, bits_per_component, dip_scale,
 111       smallest_dip_width, rotation_degrees);
 112 }
 113
 114 SharedDeviceDisplayInfo::SharedDeviceDisplayInfo()
 115     : display_height_(0),
 116       display_width_(0),
 117       bits_per_pixel_(0),
 118       bits_per_component_(0),
 119       dip_scale_(0),
 120       smallest_dip_width_(0) {
 121   JNIEnv* env = base::android::AttachCurrentThread();
 122   j_device_info_.Reset(
 123       Java_DeviceDisplayInfo_create(
 124           env, base::android::GetApplicationContext()));
 125   UpdateDisplayInfo(env, j_device_info_.obj(),
 126       Java_DeviceDisplayInfo_getDisplayHeight(env, j_device_info_.obj()),
 127       Java_DeviceDisplayInfo_getDisplayWidth(env, j_device_info_.obj()),
 128       Java_DeviceDisplayInfo_getPhysicalDisplayHeight(env,
 129                                                       j_device_info_.obj()),
 130       Java_DeviceDisplayInfo_getPhysicalDisplayWidth(env, j_device_info_.obj()),
 131       Java_DeviceDisplayInfo_getBitsPerPixel(env, j_device_info_.obj()),
 132       Java_DeviceDisplayInfo_getBitsPerComponent(env, j_device_info_.obj()),
 133       Java_DeviceDisplayInfo_getDIPScale(env, j_device_info_.obj()),
 134       Java_DeviceDisplayInfo_getSmallestDIPWidth(env, j_device_info_.obj()),
 135       Java_DeviceDisplayInfo_getRotationDegrees(env, j_device_info_.obj()));
 136 }
 137
 138 SharedDeviceDisplayInfo::~SharedDeviceDisplayInfo() {
 139 }
 140
 141 void SharedDeviceDisplayInfo::UpdateDisplayInfo(JNIEnv* env,
 142                                                 jobject jobj,
 143                                                 jint display_height,
 144                                                 jint display_width,
 145                                                 jint physical_display_height,
 146                                                 jint physical_display_width,
 147                                                 jint bits_per_pixel,
 148                                                 jint bits_per_component,
 149                                                 jdouble dip_scale,
 150                                                 jint smallest_dip_width,
 151                                                 jint rotation_degrees) {
 152   display_height_ = static_cast<int>(display_height);
 153   display_width_ = static_cast<int>(display_width);
 154   physical_display_height_ = static_cast<int>(physical_display_height);
 155   physical_display_width_ = static_cast<int>(physical_display_width);
 156   bits_per_pixel_ = static_cast<int>(bits_per_pixel);
 157   bits_per_component_ = static_cast<int>(bits_per_component);
 158   dip_scale_ = static_cast<double>(dip_scale);
 159   smallest_dip_width_ = static_cast<int>(smallest_dip_width);
 160   rotation_degrees_ = static_cast<int>(rotation_degrees);
 161 }
 162
 163 }  // namespace gfx