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/*
* 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 "JNIHelp.h"
#include "android_view_PointerIcon.h"
#include <android_runtime/AndroidRuntime.h>
#include <android_runtime/Log.h>
#include <utils/Log.h>
#include <android/graphics/GraphicsJNI.h>
#include "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) {
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()) {
GraphicsJNI::getSkBitmap(env, bitmapObj.get(), &(outPointerIcon->bitmap));
}
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));
GraphicsJNI::getSkBitmap(env, bitmapObj.get(), &(outPointerIcon->bitmapFrames[i]));
}
}
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
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