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/*
* Copyright (C) 2019 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.
*/
#ifndef ANDROID_GRAPHICS_REGION_H
#define ANDROID_GRAPHICS_REGION_H
#include <cutils/compiler.h>
#include <android/rect.h>
#include <sys/cdefs.h>
#include <jni.h>
__BEGIN_DECLS
/**
* Opaque handle for a native graphics region iterator.
*/
typedef struct ARegionIterator ARegionIterator;
/**
* Returns a iterator for a Java android.graphics.Region
*
* @param env
* @param region
* @return ARegionIterator that must be closed and must not live longer than the life
* of the jobject. It returns nullptr if the region is not a valid object.
*/
ANDROID_API ARegionIterator* ARegionIterator_acquireIterator(JNIEnv* env, jobject region);
ANDROID_API void ARegionIterator_releaseIterator(ARegionIterator* iterator);
ANDROID_API bool ARegionIterator_isComplex(ARegionIterator* iterator);
ANDROID_API bool ARegionIterator_isDone(ARegionIterator* iterator);
ANDROID_API void ARegionIterator_next(ARegionIterator* iterator);
ANDROID_API ARect ARegionIterator_getRect(ARegionIterator* iterator);
ANDROID_API ARect ARegionIterator_getTotalBounds(ARegionIterator* iterator);
__END_DECLS
#ifdef __cplusplus
namespace android {
namespace graphics {
class RegionIterator {
public:
RegionIterator(JNIEnv* env, jobject region)
: mIterator(ARegionIterator_acquireIterator(env, region)) {}
~RegionIterator() { ARegionIterator_releaseIterator(mIterator); }
bool isValid() const { return mIterator != nullptr; }
bool isComplex() { return ARegionIterator_isComplex(mIterator); }
bool isDone() { return ARegionIterator_isDone(mIterator); }
void next() { ARegionIterator_next(mIterator); }
ARect getRect() { return ARegionIterator_getRect(mIterator); }
ARect getTotalBounds() const { return ARegionIterator_getTotalBounds(mIterator); }
private:
ARegionIterator* mIterator;
};
}; // namespace graphics
}; // namespace android
#endif // __cplusplus
#endif // ANDROID_GRAPHICS_REGION_H
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