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 jobject obj, 17 jint display_height, 18 jint display_width, 19 jint bits_per_pixel, 20 jint bits_per_component, 21 jdouble dip_scale, 22 jint smallest_dip_width) { 23 SharedDeviceDisplayInfo::GetInstance()->InvokeUpdate(env, obj, 24 display_height, display_width, bits_per_pixel, bits_per_component, 25 dip_scale, smallest_dip_width); 26 } 27 28 // static 29 SharedDeviceDisplayInfo* SharedDeviceDisplayInfo::GetInstance() { 30 return Singleton<SharedDeviceDisplayInfo>::get(); 31 } 32 33 int SharedDeviceDisplayInfo::GetDisplayHeight() { 34 base::AutoLock autolock(lock_); 35 DCHECK_NE(0, display_height_); 36 return display_height_; 37 } 38 39 int SharedDeviceDisplayInfo::GetDisplayWidth() { 40 base::AutoLock autolock(lock_); 41 DCHECK_NE(0, display_width_); 42 return display_width_; 43 } 44 45 int SharedDeviceDisplayInfo::GetBitsPerPixel() { 46 base::AutoLock autolock(lock_); 47 DCHECK_NE(0, bits_per_pixel_); 48 return bits_per_pixel_; 49 } 50 51 int SharedDeviceDisplayInfo::GetBitsPerComponent() { 52 base::AutoLock autolock(lock_); 53 DCHECK_NE(0, bits_per_component_); 54 return bits_per_component_; 55 } 56 57 double SharedDeviceDisplayInfo::GetDIPScale() { 58 base::AutoLock autolock(lock_); 59 DCHECK_NE(0, dip_scale_); 60 return dip_scale_; 61 } 62 63 int SharedDeviceDisplayInfo::GetSmallestDIPWidth() { 64 base::AutoLock autolock(lock_); 65 DCHECK_NE(0, smallest_dip_width_); 66 return smallest_dip_width_; 67 } 68 69 // static 70 bool SharedDeviceDisplayInfo::RegisterSharedDeviceDisplayInfo(JNIEnv* env) { 71 return RegisterNativesImpl(env); 72 } 73 74 void SharedDeviceDisplayInfo::InvokeUpdate(JNIEnv* env, 75 jobject obj, 76 jint display_height, 77 jint display_width, 78 jint bits_per_pixel, 79 jint bits_per_component, 80 jdouble dip_scale, 81 jint smallest_dip_width) { 82 base::AutoLock autolock(lock_); 83 84 UpdateDisplayInfo(env, obj, display_height, 85 display_width, bits_per_pixel, bits_per_component, dip_scale, 86 smallest_dip_width); 87 } 88 89 SharedDeviceDisplayInfo::SharedDeviceDisplayInfo() 90 : display_height_(0), 91 display_width_(0), 92 bits_per_pixel_(0), 93 bits_per_component_(0), 94 dip_scale_(0), 95 smallest_dip_width_(0) { 96 JNIEnv* env = base::android::AttachCurrentThread(); 97 j_device_info_.Reset( 98 Java_DeviceDisplayInfo_createWithListener(env, 99 base::android::GetApplicationContext())); 100 UpdateDisplayInfo(env, j_device_info_.obj(), 101 Java_DeviceDisplayInfo_getDisplayHeight(env, j_device_info_.obj()), 102 Java_DeviceDisplayInfo_getDisplayWidth(env, j_device_info_.obj()), 103 Java_DeviceDisplayInfo_getBitsPerPixel(env, j_device_info_.obj()), 104 Java_DeviceDisplayInfo_getBitsPerComponent(env, j_device_info_.obj()), 105 Java_DeviceDisplayInfo_getDIPScale(env, j_device_info_.obj()), 106 Java_DeviceDisplayInfo_getSmallestDIPWidth(env, j_device_info_.obj())); 107 } 108 109 SharedDeviceDisplayInfo::~SharedDeviceDisplayInfo() { 110 } 111 112 void SharedDeviceDisplayInfo::UpdateDisplayInfo(JNIEnv* env, 113 jobject jobj, 114 jint display_height, 115 jint display_width, 116 jint bits_per_pixel, 117 jint bits_per_component, 118 jdouble dip_scale, 119 jint smallest_dip_width) { 120 display_height_ = static_cast<int>(display_height); 121 display_width_ = static_cast<int>(display_width); 122 bits_per_pixel_ = static_cast<int>(bits_per_pixel); 123 bits_per_component_ = static_cast<int>(bits_per_component); 124 dip_scale_ = static_cast<double>(dip_scale); 125 smallest_dip_width_ = static_cast<int>(smallest_dip_width); 126 } 127 128 } // namespace gfx 129
