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
UpdateSharedDeviceDisplayInfo(JNIEnv * env,jobject obj,jint display_height,jint display_width,jint bits_per_pixel,jint bits_per_component,jdouble dip_scale,jint smallest_dip_width)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
GetInstance()29 SharedDeviceDisplayInfo* SharedDeviceDisplayInfo::GetInstance() {
30 return Singleton<SharedDeviceDisplayInfo>::get();
31 }
32
GetDisplayHeight()33 int SharedDeviceDisplayInfo::GetDisplayHeight() {
34 base::AutoLock autolock(lock_);
35 DCHECK_NE(0, display_height_);
36 return display_height_;
37 }
38
GetDisplayWidth()39 int SharedDeviceDisplayInfo::GetDisplayWidth() {
40 base::AutoLock autolock(lock_);
41 DCHECK_NE(0, display_width_);
42 return display_width_;
43 }
44
GetBitsPerPixel()45 int SharedDeviceDisplayInfo::GetBitsPerPixel() {
46 base::AutoLock autolock(lock_);
47 DCHECK_NE(0, bits_per_pixel_);
48 return bits_per_pixel_;
49 }
50
GetBitsPerComponent()51 int SharedDeviceDisplayInfo::GetBitsPerComponent() {
52 base::AutoLock autolock(lock_);
53 DCHECK_NE(0, bits_per_component_);
54 return bits_per_component_;
55 }
56
GetDIPScale()57 double SharedDeviceDisplayInfo::GetDIPScale() {
58 base::AutoLock autolock(lock_);
59 DCHECK_NE(0, dip_scale_);
60 return dip_scale_;
61 }
62
GetSmallestDIPWidth()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
RegisterSharedDeviceDisplayInfo(JNIEnv * env)70 bool SharedDeviceDisplayInfo::RegisterSharedDeviceDisplayInfo(JNIEnv* env) {
71 return RegisterNativesImpl(env);
72 }
73
InvokeUpdate(JNIEnv * env,jobject obj,jint display_height,jint display_width,jint bits_per_pixel,jint bits_per_component,jdouble dip_scale,jint smallest_dip_width)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
SharedDeviceDisplayInfo()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
~SharedDeviceDisplayInfo()109 SharedDeviceDisplayInfo::~SharedDeviceDisplayInfo() {
110 }
111
UpdateDisplayInfo(JNIEnv * env,jobject jobj,jint display_height,jint display_width,jint bits_per_pixel,jint bits_per_component,jdouble dip_scale,jint smallest_dip_width)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