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      1 /*
      2  * Copyright 2012 The Android Open Source Project
      3  *
      4  * Use of this source code is governed by a BSD-style license that can be
      5  * found in the LICENSE file.
      6  */
      7 
      8 #ifndef SkMergeImageFilter_DEFINED
      9 #define SkMergeImageFilter_DEFINED
     10 
     11 #include "SkFlattenable.h"
     12 #include "SkImageFilter.h"
     13 
     14 class SK_API SkMergeImageFilter : public SkImageFilter {
     15 public:
     16     static sk_sp<SkImageFilter> Make(sk_sp<SkImageFilter>* const filters, int count,
     17                                      const CropRect* cropRect = nullptr);
     18 
     19     static sk_sp<SkImageFilter> Make(sk_sp<SkImageFilter> first, sk_sp<SkImageFilter> second,
     20                                      const CropRect* cropRect = nullptr) {
     21         sk_sp<SkImageFilter> array[] = {
     22             std::move(first),
     23             std::move(second),
     24         };
     25         return Make(array, 2, cropRect);
     26     }
     27 
     28 protected:
     29     void flatten(SkWriteBuffer&) const override;
     30     sk_sp<SkSpecialImage> onFilterImage(SkSpecialImage* source, const Context&,
     31                                         SkIPoint* offset) const override;
     32     sk_sp<SkImageFilter> onMakeColorSpace(SkColorSpaceXformer*) const override;
     33     bool onCanHandleComplexCTM() const override { return true; }
     34 
     35 private:
     36     SK_FLATTENABLE_HOOKS(SkMergeImageFilter)
     37 
     38     SkMergeImageFilter(sk_sp<SkImageFilter>* const filters, int count, const CropRect* cropRect);
     39 
     40     typedef SkImageFilter INHERITED;
     41 };
     42 
     43 #endif
     44