root/ui/gfx/android/shared_device_display_info.cc

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DEFINITIONS

This source file includes following definitions.
  1. UpdateSharedDeviceDisplayInfo
  2. GetInstance
  3. GetDisplayHeight
  4. GetDisplayWidth
  5. GetPhysicalDisplayHeight
  6. GetPhysicalDisplayWidth
  7. GetBitsPerPixel
  8. GetBitsPerComponent
  9. GetDIPScale
  10. GetSmallestDIPWidth
  11. RegisterSharedDeviceDisplayInfo
  12. InvokeUpdate
  13. smallest_dip_width_
  14. UpdateDisplayInfo

// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "ui/gfx/android/shared_device_display_info.h"

#include "base/android/jni_android.h"
#include "base/android/jni_string.h"
#include "base/logging.h"
#include "jni/DeviceDisplayInfo_jni.h"

namespace gfx {

// static JNI call
static void UpdateSharedDeviceDisplayInfo(JNIEnv* env,
                                          jobject obj,
                                          jint display_height,
                                          jint display_width,
                                          jint physical_display_height,
                                          jint physical_display_width,
                                          jint bits_per_pixel,
                                          jint bits_per_component,
                                          jdouble dip_scale,
                                          jint smallest_dip_width) {
  SharedDeviceDisplayInfo::GetInstance()->InvokeUpdate(env, obj,
      display_height, display_width,
      physical_display_height, physical_display_width,
      bits_per_pixel, bits_per_component,
      dip_scale, smallest_dip_width);
}

// static
SharedDeviceDisplayInfo* SharedDeviceDisplayInfo::GetInstance() {
  return Singleton<SharedDeviceDisplayInfo>::get();
}

int SharedDeviceDisplayInfo::GetDisplayHeight() {
  base::AutoLock autolock(lock_);
  DCHECK_NE(0, display_height_);
  return display_height_;
}

int SharedDeviceDisplayInfo::GetDisplayWidth() {
  base::AutoLock autolock(lock_);
  DCHECK_NE(0, display_width_);
  return display_width_;
}

int SharedDeviceDisplayInfo::GetPhysicalDisplayHeight() {
  base::AutoLock autolock(lock_);
  return physical_display_height_;
}

int SharedDeviceDisplayInfo::GetPhysicalDisplayWidth() {
  base::AutoLock autolock(lock_);
  return physical_display_width_;
}

int SharedDeviceDisplayInfo::GetBitsPerPixel() {
  base::AutoLock autolock(lock_);
  DCHECK_NE(0, bits_per_pixel_);
  return bits_per_pixel_;
}

int SharedDeviceDisplayInfo::GetBitsPerComponent() {
  base::AutoLock autolock(lock_);
  DCHECK_NE(0, bits_per_component_);
  return bits_per_component_;
}

double SharedDeviceDisplayInfo::GetDIPScale() {
  base::AutoLock autolock(lock_);
  DCHECK_NE(0, dip_scale_);
  return dip_scale_;
}

int SharedDeviceDisplayInfo::GetSmallestDIPWidth() {
  base::AutoLock autolock(lock_);
  DCHECK_NE(0, smallest_dip_width_);
  return smallest_dip_width_;
}

// static
bool SharedDeviceDisplayInfo::RegisterSharedDeviceDisplayInfo(JNIEnv* env) {
  return RegisterNativesImpl(env);
}

void SharedDeviceDisplayInfo::InvokeUpdate(JNIEnv* env,
                                           jobject obj,
                                           jint display_height,
                                           jint display_width,
                                           jint physical_display_height,
                                           jint physical_display_width,
                                           jint bits_per_pixel,
                                           jint bits_per_component,
                                           jdouble dip_scale,
                                           jint smallest_dip_width) {
  base::AutoLock autolock(lock_);

  UpdateDisplayInfo(env, obj,
      display_height, display_width,
      physical_display_height, physical_display_width,
      bits_per_pixel, bits_per_component, dip_scale,
      smallest_dip_width);
}

SharedDeviceDisplayInfo::SharedDeviceDisplayInfo()
    : display_height_(0),
      display_width_(0),
      bits_per_pixel_(0),
      bits_per_component_(0),
      dip_scale_(0),
      smallest_dip_width_(0) {
  JNIEnv* env = base::android::AttachCurrentThread();
  j_device_info_.Reset(
      Java_DeviceDisplayInfo_create(
          env, base::android::GetApplicationContext()));
  UpdateDisplayInfo(env, j_device_info_.obj(),
      Java_DeviceDisplayInfo_getDisplayHeight(env, j_device_info_.obj()),
      Java_DeviceDisplayInfo_getDisplayWidth(env, j_device_info_.obj()),
      Java_DeviceDisplayInfo_getPhysicalDisplayHeight(env,
                                                      j_device_info_.obj()),
      Java_DeviceDisplayInfo_getPhysicalDisplayWidth(env, j_device_info_.obj()),
      Java_DeviceDisplayInfo_getBitsPerPixel(env, j_device_info_.obj()),
      Java_DeviceDisplayInfo_getBitsPerComponent(env, j_device_info_.obj()),
      Java_DeviceDisplayInfo_getDIPScale(env, j_device_info_.obj()),
      Java_DeviceDisplayInfo_getSmallestDIPWidth(env, j_device_info_.obj()));
}

SharedDeviceDisplayInfo::~SharedDeviceDisplayInfo() {
}

void SharedDeviceDisplayInfo::UpdateDisplayInfo(JNIEnv* env,
                                                jobject jobj,
                                                jint display_height,
                                                jint display_width,
                                                jint physical_display_height,
                                                jint physical_display_width,
                                                jint bits_per_pixel,
                                                jint bits_per_component,
                                                jdouble dip_scale,
                                                jint smallest_dip_width) {
  display_height_ = static_cast<int>(display_height);
  display_width_ = static_cast<int>(display_width);
  physical_display_height_ = static_cast<int>(physical_display_height);
  physical_display_width_ = static_cast<int>(physical_display_width);
  bits_per_pixel_ = static_cast<int>(bits_per_pixel);
  bits_per_component_ = static_cast<int>(bits_per_component);
  dip_scale_ = static_cast<double>(dip_scale);
  smallest_dip_width_ = static_cast<int>(smallest_dip_width);
}

}  // namespace gfx

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