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      1 /*
      2  * Copyright (C) 2017 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #define LOG_TAG "DisplayViewport-JNI"
     18 
     19 #include <nativehelper/JNIHelp.h>
     20 #include "core_jni_helpers.h"
     21 
     22 #include <android_hardware_display_DisplayViewport.h>
     23 #include <android_runtime/AndroidRuntime.h>
     24 #include <android_runtime/Log.h>
     25 #include <utils/Log.h>
     26 
     27 #include <nativehelper/ScopedUtfChars.h>
     28 
     29 namespace android {
     30 
     31 // ----------------------------------------------------------------------------
     32 
     33 static struct {
     34     jclass clazz;
     35 
     36     jfieldID displayId;
     37     jfieldID orientation;
     38     jfieldID logicalFrame;
     39     jfieldID physicalFrame;
     40     jfieldID deviceWidth;
     41     jfieldID deviceHeight;
     42     jfieldID uniqueId;
     43 } gDisplayViewportClassInfo;
     44 
     45 static struct {
     46     jfieldID left;
     47     jfieldID top;
     48     jfieldID right;
     49     jfieldID bottom;
     50 } gRectClassInfo;
     51 
     52 // ----------------------------------------------------------------------------
     53 
     54 status_t android_hardware_display_DisplayViewport_toNative(JNIEnv* env, jobject viewportObj,
     55         DisplayViewport* viewport) {
     56     viewport->displayId = env->GetIntField(viewportObj, gDisplayViewportClassInfo.displayId);
     57     viewport->orientation = env->GetIntField(viewportObj, gDisplayViewportClassInfo.orientation);
     58     viewport->deviceWidth = env->GetIntField(viewportObj, gDisplayViewportClassInfo.deviceWidth);
     59     viewport->deviceHeight = env->GetIntField(viewportObj, gDisplayViewportClassInfo.deviceHeight);
     60 
     61     jstring uniqueId =
     62             jstring(env->GetObjectField(viewportObj, gDisplayViewportClassInfo.uniqueId));
     63     if (uniqueId != nullptr) {
     64         viewport->uniqueId.setTo(ScopedUtfChars(env, uniqueId).c_str());
     65     }
     66 
     67     jobject logicalFrameObj =
     68             env->GetObjectField(viewportObj, gDisplayViewportClassInfo.logicalFrame);
     69     viewport->logicalLeft = env->GetIntField(logicalFrameObj, gRectClassInfo.left);
     70     viewport->logicalTop = env->GetIntField(logicalFrameObj, gRectClassInfo.top);
     71     viewport->logicalRight = env->GetIntField(logicalFrameObj, gRectClassInfo.right);
     72     viewport->logicalBottom = env->GetIntField(logicalFrameObj, gRectClassInfo.bottom);
     73 
     74     jobject physicalFrameObj =
     75             env->GetObjectField(viewportObj, gDisplayViewportClassInfo.physicalFrame);
     76     viewport->physicalLeft = env->GetIntField(physicalFrameObj, gRectClassInfo.left);
     77     viewport->physicalTop = env->GetIntField(physicalFrameObj, gRectClassInfo.top);
     78     viewport->physicalRight = env->GetIntField(physicalFrameObj, gRectClassInfo.right);
     79     viewport->physicalBottom = env->GetIntField(physicalFrameObj, gRectClassInfo.bottom);
     80 
     81     return OK;
     82 }
     83 
     84 // ----------------------------------------------------------------------------
     85 
     86 int register_android_hardware_display_DisplayViewport(JNIEnv* env) {
     87     jclass clazz = FindClassOrDie(env, "android/hardware/display/DisplayViewport");
     88     gDisplayViewportClassInfo.clazz = MakeGlobalRefOrDie(env, clazz);
     89 
     90     gDisplayViewportClassInfo.displayId = GetFieldIDOrDie(env,
     91             gDisplayViewportClassInfo.clazz, "displayId", "I");
     92 
     93     gDisplayViewportClassInfo.orientation = GetFieldIDOrDie(env,
     94             gDisplayViewportClassInfo.clazz, "orientation", "I");
     95 
     96     gDisplayViewportClassInfo.deviceWidth = GetFieldIDOrDie(env,
     97             gDisplayViewportClassInfo.clazz, "deviceWidth", "I");
     98 
     99     gDisplayViewportClassInfo.deviceHeight = GetFieldIDOrDie(env,
    100             gDisplayViewportClassInfo.clazz, "deviceHeight", "I");
    101 
    102     gDisplayViewportClassInfo.logicalFrame = GetFieldIDOrDie(env,
    103             gDisplayViewportClassInfo.clazz, "logicalFrame", "Landroid/graphics/Rect;");
    104 
    105     gDisplayViewportClassInfo.physicalFrame = GetFieldIDOrDie(env,
    106             gDisplayViewportClassInfo.clazz, "physicalFrame", "Landroid/graphics/Rect;");
    107 
    108     gDisplayViewportClassInfo.uniqueId = GetFieldIDOrDie(env,
    109             gDisplayViewportClassInfo.clazz, "uniqueId", "Ljava/lang/String;");
    110 
    111     clazz = FindClassOrDie(env, "android/graphics/Rect");
    112     gRectClassInfo.left = GetFieldIDOrDie(env, clazz, "left", "I");
    113     gRectClassInfo.top = GetFieldIDOrDie(env, clazz, "top", "I");
    114     gRectClassInfo.right = GetFieldIDOrDie(env, clazz, "right", "I");
    115     gRectClassInfo.bottom = GetFieldIDOrDie(env, clazz, "bottom", "I");
    116 
    117     return 0;
    118 }
    119 
    120 } // namespace android
    121