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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:
virtual ~SkMergeImageFilter();
static SkMergeImageFilter* Create(SkImageFilter* first, SkImageFilter* second,
SkXfermode::Mode mode = SkXfermode::kSrcOver_Mode,
const CropRect* cropRect = NULL,
uint32_t uniqueID = 0) {
SkImageFilter* inputs[2] = { first, second };
SkXfermode::Mode modes[2] = { mode, mode };
return SkNEW_ARGS(SkMergeImageFilter, (inputs, 2, modes, cropRect, uniqueID));
}
static SkMergeImageFilter* Create(SkImageFilter* filters[], int count,
const SkXfermode::Mode modes[] = NULL,
const CropRect* cropRect = NULL,
uint32_t uniqueID = 0) {
return SkNEW_ARGS(SkMergeImageFilter, (filters, count, modes, cropRect, uniqueID));
}
SK_TO_STRING_OVERRIDE()
SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkMergeImageFilter)
protected:
SkMergeImageFilter(SkImageFilter* filters[], int count,
const SkXfermode::Mode modes[],
const CropRect* cropRect,
uint32_t uniqueID);
void flatten(SkWriteBuffer&) const SK_OVERRIDE;
virtual bool onFilterImage(Proxy*, const SkBitmap& src, const Context&,
SkBitmap* result, SkIPoint* loc) const SK_OVERRIDE;
private:
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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