| /* |
| * Copyright (C) 2011 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #define LOG_TAG "PointerIcon-JNI" |
| |
| #include <nativehelper/JNIHelp.h> |
| |
| #include "android_view_PointerIcon.h" |
| |
| #include <android_runtime/AndroidRuntime.h> |
| #include <android_runtime/Log.h> |
| #include <utils/Log.h> |
| #include <android/graphics/bitmap.h> |
| #include <nativehelper/ScopedLocalRef.h> |
| |
| #include "core_jni_helpers.h" |
| |
| namespace android { |
| |
| static struct { |
| jclass clazz; |
| jfieldID mType; |
| jfieldID mBitmap; |
| jfieldID mHotSpotX; |
| jfieldID mHotSpotY; |
| jfieldID mBitmapFrames; |
| jfieldID mDurationPerFrame; |
| jmethodID getSystemIcon; |
| jmethodID load; |
| } gPointerIconClassInfo; |
| |
| |
| // --- Global Functions --- |
| |
| jobject android_view_PointerIcon_getSystemIcon(JNIEnv* env, jobject contextObj, int32_t style) { |
| jobject pointerIconObj = env->CallStaticObjectMethod(gPointerIconClassInfo.clazz, |
| gPointerIconClassInfo.getSystemIcon, contextObj, style); |
| if (env->ExceptionCheck()) { |
| ALOGW("An exception occurred while getting a pointer icon with style %d.", style); |
| LOGW_EX(env); |
| env->ExceptionClear(); |
| return NULL; |
| } |
| return pointerIconObj; |
| } |
| |
| status_t android_view_PointerIcon_load(JNIEnv* env, jobject pointerIconObj, jobject contextObj, |
| PointerIcon* outPointerIcon) { |
| outPointerIcon->reset(); |
| |
| if (!pointerIconObj) { |
| return OK; |
| } |
| |
| ScopedLocalRef<jobject> loadedPointerIconObj(env, env->CallObjectMethod(pointerIconObj, |
| gPointerIconClassInfo.load, contextObj)); |
| if (env->ExceptionCheck() || !loadedPointerIconObj.get()) { |
| ALOGW("An exception occurred while loading a pointer icon."); |
| LOGW_EX(env); |
| env->ExceptionClear(); |
| return UNKNOWN_ERROR; |
| } |
| return android_view_PointerIcon_getLoadedIcon(env, loadedPointerIconObj.get(), outPointerIcon); |
| } |
| |
| status_t android_view_PointerIcon_getLoadedIcon(JNIEnv* env, jobject pointerIconObj, |
| PointerIcon* outPointerIcon) { |
| if (!pointerIconObj) { |
| return BAD_VALUE; |
| } |
| outPointerIcon->style = env->GetIntField(pointerIconObj, gPointerIconClassInfo.mType); |
| outPointerIcon->hotSpotX = env->GetFloatField(pointerIconObj, gPointerIconClassInfo.mHotSpotX); |
| outPointerIcon->hotSpotY = env->GetFloatField(pointerIconObj, gPointerIconClassInfo.mHotSpotY); |
| |
| ScopedLocalRef<jobject> bitmapObj( |
| env, env->GetObjectField(pointerIconObj, gPointerIconClassInfo.mBitmap)); |
| if (bitmapObj.get()) { |
| outPointerIcon->bitmap = graphics::Bitmap(env, bitmapObj.get()); |
| } |
| |
| ScopedLocalRef<jobjectArray> bitmapFramesObj(env, reinterpret_cast<jobjectArray>( |
| env->GetObjectField(pointerIconObj, gPointerIconClassInfo.mBitmapFrames))); |
| if (bitmapFramesObj.get()) { |
| outPointerIcon->durationPerFrame = env->GetIntField( |
| pointerIconObj, gPointerIconClassInfo.mDurationPerFrame); |
| jsize size = env->GetArrayLength(bitmapFramesObj.get()); |
| outPointerIcon->bitmapFrames.resize(size); |
| for (jsize i = 0; i < size; ++i) { |
| ScopedLocalRef<jobject> bitmapObj(env, env->GetObjectArrayElement(bitmapFramesObj.get(), i)); |
| outPointerIcon->bitmapFrames[i] = graphics::Bitmap(env, bitmapObj.get()); |
| } |
| } |
| |
| return OK; |
| } |
| |
| status_t android_view_PointerIcon_loadSystemIcon(JNIEnv* env, jobject contextObj, |
| int32_t style, PointerIcon* outPointerIcon) { |
| jobject pointerIconObj = android_view_PointerIcon_getSystemIcon(env, contextObj, style); |
| if (!pointerIconObj) { |
| outPointerIcon->reset(); |
| return UNKNOWN_ERROR; |
| } |
| |
| status_t status = android_view_PointerIcon_load(env, pointerIconObj, |
| contextObj, outPointerIcon); |
| env->DeleteLocalRef(pointerIconObj); |
| return status; |
| } |
| |
| |
| // --- JNI Registration --- |
| |
| int register_android_view_PointerIcon(JNIEnv* env) { |
| jclass clazz = FindClassOrDie(env, "android/view/PointerIcon"); |
| gPointerIconClassInfo.clazz = MakeGlobalRefOrDie(env, clazz); |
| |
| gPointerIconClassInfo.mBitmap = GetFieldIDOrDie(env, gPointerIconClassInfo.clazz, |
| "mBitmap", "Landroid/graphics/Bitmap;"); |
| |
| gPointerIconClassInfo.mType = GetFieldIDOrDie(env, gPointerIconClassInfo.clazz, |
| "mType", "I"); |
| |
| gPointerIconClassInfo.mHotSpotX = GetFieldIDOrDie(env, gPointerIconClassInfo.clazz, |
| "mHotSpotX", "F"); |
| |
| gPointerIconClassInfo.mHotSpotY = GetFieldIDOrDie(env, gPointerIconClassInfo.clazz, |
| "mHotSpotY", "F"); |
| |
| gPointerIconClassInfo.mBitmapFrames = GetFieldIDOrDie(env, gPointerIconClassInfo.clazz, |
| "mBitmapFrames", "[Landroid/graphics/Bitmap;"); |
| |
| gPointerIconClassInfo.mDurationPerFrame = GetFieldIDOrDie(env, gPointerIconClassInfo.clazz, |
| "mDurationPerFrame", "I"); |
| |
| gPointerIconClassInfo.getSystemIcon = GetStaticMethodIDOrDie(env, gPointerIconClassInfo.clazz, |
| "getSystemIcon", "(Landroid/content/Context;I)Landroid/view/PointerIcon;"); |
| |
| gPointerIconClassInfo.load = GetMethodIDOrDie(env, gPointerIconClassInfo.clazz, |
| "load", "(Landroid/content/Context;)Landroid/view/PointerIcon;"); |
| |
| return 0; |
| } |
| |
| } // namespace android |