services/jni/com_android_server_input_InputWindowHandle.cpp

   1 /*
   2  * Copyright (C) 2011 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 "InputWindowHandle"
  18
  19 #include "JNIHelp.h"
  20 #include "jni.h"
  21 #include <android_runtime/AndroidRuntime.h>
  22 #include <utils/threads.h>
  23
  24 #include <android_view_InputChannel.h>
  25 #include <android/graphics/Region.h>
  26
  27 #include "com_android_server_input_InputWindowHandle.h"
  28 #include "com_android_server_input_InputApplicationHandle.h"
  29
  30 namespace android {
  31
  32 static struct {
  33     jfieldID ptr;
  34     jfieldID inputApplicationHandle;
  35     jfieldID inputChannel;
  36     jfieldID name;
  37     jfieldID layoutParamsFlags;
  38     jfieldID layoutParamsType;
  39     jfieldID dispatchingTimeoutNanos;
  40     jfieldID frameLeft;
  41     jfieldID frameTop;
  42     jfieldID frameRight;
  43     jfieldID frameBottom;
  44     jfieldID scaleFactor;
  45     jfieldID touchableRegion;
  46     jfieldID visible;
  47     jfieldID canReceiveKeys;
  48     jfieldID hasFocus;
  49     jfieldID hasWallpaper;
  50     jfieldID paused;
  51     jfieldID layer;
  52     jfieldID ownerPid;
  53     jfieldID ownerUid;
  54     jfieldID inputFeatures;
  55     jfieldID displayId;
  56 } gInputWindowHandleClassInfo;
  57
  58 static Mutex gHandleMutex;
  59
  60
  61 // --- NativeInputWindowHandle ---
  62
  63 NativeInputWindowHandle::NativeInputWindowHandle(
  64         const sp<InputApplicationHandle>& inputApplicationHandle, jweak objWeak) :
  65         InputWindowHandle(inputApplicationHandle),
  66         mObjWeak(objWeak) {
  67 }
  68
  69 NativeInputWindowHandle::~NativeInputWindowHandle() {
  70     JNIEnv* env = AndroidRuntime::getJNIEnv();
  71     env->DeleteWeakGlobalRef(mObjWeak);
  72 }
  73
  74 jobject NativeInputWindowHandle::getInputWindowHandleObjLocalRef(JNIEnv* env) {
  75     return env->NewLocalRef(mObjWeak);
  76 }
  77
  78 bool NativeInputWindowHandle::updateInfo() {
  79     JNIEnv* env = AndroidRuntime::getJNIEnv();
  80     jobject obj = env->NewLocalRef(mObjWeak);
  81     if (!obj) {
  82         releaseInfo();
  83         return false;
  84     }
  85
  86     if (!mInfo) {
  87         mInfo = new InputWindowInfo();
  88     }
  89
  90     jobject inputChannelObj = env->GetObjectField(obj,
  91             gInputWindowHandleClassInfo.inputChannel);
  92     if (inputChannelObj) {
  93         mInfo->inputChannel = android_view_InputChannel_getInputChannel(env, inputChannelObj);
  94         env->DeleteLocalRef(inputChannelObj);
  95     } else {
  96         mInfo->inputChannel.clear();
  97     }
  98
  99     jstring nameObj = jstring(env->GetObjectField(obj,
 100             gInputWindowHandleClassInfo.name));
 101     if (nameObj) {
 102         const char* nameStr = env->GetStringUTFChars(nameObj, NULL);
 103         mInfo->name.setTo(nameStr);
 104         env->ReleaseStringUTFChars(nameObj, nameStr);
 105         env->DeleteLocalRef(nameObj);
 106     } else {
 107         mInfo->name.setTo("<null>");
 108     }
 109
 110     mInfo->layoutParamsFlags = env->GetIntField(obj,
 111             gInputWindowHandleClassInfo.layoutParamsFlags);
 112     mInfo->layoutParamsType = env->GetIntField(obj,
 113             gInputWindowHandleClassInfo.layoutParamsType);
 114     mInfo->dispatchingTimeout = env->GetLongField(obj,
 115             gInputWindowHandleClassInfo.dispatchingTimeoutNanos);
 116     mInfo->frameLeft = env->GetIntField(obj,
 117             gInputWindowHandleClassInfo.frameLeft);
 118     mInfo->frameTop = env->GetIntField(obj,
 119             gInputWindowHandleClassInfo.frameTop);
 120     mInfo->frameRight = env->GetIntField(obj,
 121             gInputWindowHandleClassInfo.frameRight);
 122     mInfo->frameBottom = env->GetIntField(obj,
 123             gInputWindowHandleClassInfo.frameBottom);
 124     mInfo->scaleFactor = env->GetFloatField(obj,
 125             gInputWindowHandleClassInfo.scaleFactor);
 126
 127     jobject regionObj = env->GetObjectField(obj,
 128             gInputWindowHandleClassInfo.touchableRegion);
 129     if (regionObj) {
 130         SkRegion* region = android_graphics_Region_getSkRegion(env, regionObj);
 131         mInfo->touchableRegion.set(*region);
 132         env->DeleteLocalRef(regionObj);
 133     } else {
 134         mInfo->touchableRegion.setEmpty();
 135     }
 136
 137     mInfo->visible = env->GetBooleanField(obj,
 138             gInputWindowHandleClassInfo.visible);
 139     mInfo->canReceiveKeys = env->GetBooleanField(obj,
 140             gInputWindowHandleClassInfo.canReceiveKeys);
 141     mInfo->hasFocus = env->GetBooleanField(obj,
 142             gInputWindowHandleClassInfo.hasFocus);
 143     mInfo->hasWallpaper = env->GetBooleanField(obj,
 144             gInputWindowHandleClassInfo.hasWallpaper);
 145     mInfo->paused = env->GetBooleanField(obj,
 146             gInputWindowHandleClassInfo.paused);
 147     mInfo->layer = env->GetIntField(obj,
 148             gInputWindowHandleClassInfo.layer);
 149     mInfo->ownerPid = env->GetIntField(obj,
 150             gInputWindowHandleClassInfo.ownerPid);
 151     mInfo->ownerUid = env->GetIntField(obj,
 152             gInputWindowHandleClassInfo.ownerUid);
 153     mInfo->inputFeatures = env->GetIntField(obj,
 154             gInputWindowHandleClassInfo.inputFeatures);
 155     mInfo->displayId = env->GetIntField(obj,
 156             gInputWindowHandleClassInfo.displayId);
 157
 158     env->DeleteLocalRef(obj);
 159     return true;
 160 }
 161
 162
 163 // --- Global functions ---
 164
 165 sp<NativeInputWindowHandle> android_server_InputWindowHandle_getHandle(
 166         JNIEnv* env, jobject inputWindowHandleObj) {
 167     if (!inputWindowHandleObj) {
 168         return NULL;
 169     }
 170
 171     AutoMutex _l(gHandleMutex);
 172
 173     int ptr = env->GetIntField(inputWindowHandleObj, gInputWindowHandleClassInfo.ptr);
 174     NativeInputWindowHandle* handle;
 175     if (ptr) {
 176         handle = reinterpret_cast<NativeInputWindowHandle*>(ptr);
 177     } else {
 178         jobject inputApplicationHandleObj = env->GetObjectField(inputWindowHandleObj,
 179                 gInputWindowHandleClassInfo.inputApplicationHandle);
 180         sp<InputApplicationHandle> inputApplicationHandle =
 181                 android_server_InputApplicationHandle_getHandle(env, inputApplicationHandleObj);
 182         env->DeleteLocalRef(inputApplicationHandleObj);
 183
 184         jweak objWeak = env->NewWeakGlobalRef(inputWindowHandleObj);
 185         handle = new NativeInputWindowHandle(inputApplicationHandle, objWeak);
 186         handle->incStrong(inputWindowHandleObj);
 187         env->SetIntField(inputWindowHandleObj, gInputWindowHandleClassInfo.ptr,
 188                 reinterpret_cast<int>(handle));
 189     }
 190     return handle;
 191 }
 192
 193
 194 // --- JNI ---
 195
 196 static void android_server_InputWindowHandle_nativeDispose(JNIEnv* env, jobject obj) {
 197     AutoMutex _l(gHandleMutex);
 198
 199     int ptr = env->GetIntField(obj, gInputWindowHandleClassInfo.ptr);
 200     if (ptr) {
 201         env->SetIntField(obj, gInputWindowHandleClassInfo.ptr, 0);
 202
 203         NativeInputWindowHandle* handle = reinterpret_cast<NativeInputWindowHandle*>(ptr);
 204         handle->decStrong(obj);
 205     }
 206 }
 207
 208
 209 static JNINativeMethod gInputWindowHandleMethods[] = {
 210     /* name, signature, funcPtr */
 211     { "nativeDispose", "()V",
 212             (void*) android_server_InputWindowHandle_nativeDispose },
 213 };
 214
 215 #define FIND_CLASS(var, className) \
 216         var = env->FindClass(className); \
 217         LOG_FATAL_IF(! var, "Unable to find class " className);
 218
 219 #define GET_FIELD_ID(var, clazz, fieldName, fieldDescriptor) \
 220         var = env->GetFieldID(clazz, fieldName, fieldDescriptor); \
 221         LOG_FATAL_IF(! var, "Unable to find field " fieldName);
 222
 223 int register_android_server_InputWindowHandle(JNIEnv* env) {
 224     int res = jniRegisterNativeMethods(env, "com/android/server/input/InputWindowHandle",
 225             gInputWindowHandleMethods, NELEM(gInputWindowHandleMethods));
 226     LOG_FATAL_IF(res < 0, "Unable to register native methods.");
 227
 228     jclass clazz;
 229     FIND_CLASS(clazz, "com/android/server/input/InputWindowHandle");
 230
 231     GET_FIELD_ID(gInputWindowHandleClassInfo.ptr, clazz,
 232             "ptr", "I");
 233
 234     GET_FIELD_ID(gInputWindowHandleClassInfo.inputApplicationHandle,
 235             clazz,
 236             "inputApplicationHandle", "Lcom/android/server/input/InputApplicationHandle;");
 237
 238     GET_FIELD_ID(gInputWindowHandleClassInfo.inputChannel, clazz,
 239             "inputChannel", "Landroid/view/InputChannel;");
 240
 241     GET_FIELD_ID(gInputWindowHandleClassInfo.name, clazz,
 242             "name", "Ljava/lang/String;");
 243
 244     GET_FIELD_ID(gInputWindowHandleClassInfo.layoutParamsFlags, clazz,
 245             "layoutParamsFlags", "I");
 246
 247     GET_FIELD_ID(gInputWindowHandleClassInfo.layoutParamsType, clazz,
 248             "layoutParamsType", "I");
 249
 250     GET_FIELD_ID(gInputWindowHandleClassInfo.dispatchingTimeoutNanos, clazz,
 251             "dispatchingTimeoutNanos", "J");
 252
 253     GET_FIELD_ID(gInputWindowHandleClassInfo.frameLeft, clazz,
 254             "frameLeft", "I");
 255
 256     GET_FIELD_ID(gInputWindowHandleClassInfo.frameTop, clazz,
 257             "frameTop", "I");
 258
 259     GET_FIELD_ID(gInputWindowHandleClassInfo.frameRight, clazz,
 260             "frameRight", "I");
 261
 262     GET_FIELD_ID(gInputWindowHandleClassInfo.frameBottom, clazz,
 263             "frameBottom", "I");
 264
 265     GET_FIELD_ID(gInputWindowHandleClassInfo.scaleFactor, clazz,
 266             "scaleFactor", "F");
 267
 268     GET_FIELD_ID(gInputWindowHandleClassInfo.touchableRegion, clazz,
 269             "touchableRegion", "Landroid/graphics/Region;");
 270
 271     GET_FIELD_ID(gInputWindowHandleClassInfo.visible, clazz,
 272             "visible", "Z");
 273
 274     GET_FIELD_ID(gInputWindowHandleClassInfo.canReceiveKeys, clazz,
 275             "canReceiveKeys", "Z");
 276
 277     GET_FIELD_ID(gInputWindowHandleClassInfo.hasFocus, clazz,
 278             "hasFocus", "Z");
 279
 280     GET_FIELD_ID(gInputWindowHandleClassInfo.hasWallpaper, clazz,
 281             "hasWallpaper", "Z");
 282
 283     GET_FIELD_ID(gInputWindowHandleClassInfo.paused, clazz,
 284             "paused", "Z");
 285
 286     GET_FIELD_ID(gInputWindowHandleClassInfo.layer, clazz,
 287             "layer", "I");
 288
 289     GET_FIELD_ID(gInputWindowHandleClassInfo.ownerPid, clazz,
 290             "ownerPid", "I");
 291
 292     GET_FIELD_ID(gInputWindowHandleClassInfo.ownerUid, clazz,
 293             "ownerUid", "I");
 294
 295     GET_FIELD_ID(gInputWindowHandleClassInfo.inputFeatures, clazz,
 296             "inputFeatures", "I");
 297
 298     GET_FIELD_ID(gInputWindowHandleClassInfo.displayId, clazz,
 299             "displayId", "I");
 300     return 0;
 301 }
 302
 303 } /* namespace android */