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/*
* Copyright 2012 The Android Open Source Project
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkMergeImageFilter_DEFINED
#define SkMergeImageFilter_DEFINED
#include "SkImageFilter.h"
#include "SkXfermode.h"
class SK_API SkMergeImageFilter : public SkImageFilter {
public:
~SkMergeImageFilter() override;
static sk_sp<SkImageFilter> Make(sk_sp<SkImageFilter> first, sk_sp<SkImageFilter> second,
SkXfermode::Mode mode = SkXfermode::kSrcOver_Mode,
const CropRect* cropRect = nullptr) {
sk_sp<SkImageFilter> inputs[2] = { first, second };
SkXfermode::Mode modes[2] = { mode, mode };
return sk_sp<SkImageFilter>(new SkMergeImageFilter(inputs, 2, modes, cropRect));
}
static sk_sp<SkImageFilter> Make(sk_sp<SkImageFilter> filters[],
int count,
const SkXfermode::Mode modes[] = nullptr,
const CropRect* cropRect = nullptr) {
return sk_sp<SkImageFilter>(new SkMergeImageFilter(filters, count, modes, cropRect));
}
SK_TO_STRING_OVERRIDE()
SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkMergeImageFilter)
#ifdef SK_SUPPORT_LEGACY_IMAGEFILTER_PTR
static SkImageFilter* Create(SkImageFilter* first, SkImageFilter* second,
SkXfermode::Mode mode = SkXfermode::kSrcOver_Mode,
const CropRect* cropRect = nullptr) {
return Make(sk_ref_sp<SkImageFilter>(first),
sk_ref_sp<SkImageFilter>(second),
mode, cropRect).release();
}
static SkImageFilter* Create(SkImageFilter* filters[], int count,
const SkXfermode::Mode modes[] = nullptr,
const CropRect* cropRect = nullptr) {
SkAutoTDeleteArray<sk_sp<SkImageFilter>> temp(new sk_sp<SkImageFilter>[count]);
for (int i = 0; i < count; ++i) {
temp[i] = sk_ref_sp<SkImageFilter>(filters[i]);
}
return Make(temp.get(), count, modes, cropRect).release();
}
#endif
protected:
void flatten(SkWriteBuffer&) const override;
sk_sp<SkSpecialImage> onFilterImage(SkSpecialImage* source, const Context&,
SkIPoint* offset) const override;
private:
SkMergeImageFilter(sk_sp<SkImageFilter> filters[], int count, const SkXfermode::Mode modes[],
const CropRect* cropRect);
uint8_t* fModes; // SkXfermode::Mode
// private storage, to avoid dynamically allocating storage for our copy
// of the modes (unless the count is so large we can't fit).
intptr_t fStorage[16];
void initAllocModes();
void initModes(const SkXfermode::Mode []);
typedef SkImageFilter INHERITED;
};
#endif
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