src/third_party/skia/include/effects/SkTestImageFilters.h

   1 #ifndef _SkTestImageFilters_h
   2 #define _SkTestImageFilters_h
   3
   4 #include "SkImageFilter.h"
   5 #include "SkPoint.h"
   6
   7 // Fun mode that scales down (only) and then scales back up to look pixelated
   8 class SK_API SkDownSampleImageFilter : public SkImageFilter {
   9 public:
  10     static SkDownSampleImageFilter* Create(SkScalar scale, SkImageFilter* input = NULL) {
  11         if (!SkScalarIsFinite(scale)) {
  12             return NULL;
  13         }
  14         // we don't support scale in this range
  15         if (scale > SK_Scalar1 || scale <= 0) {
  16             return NULL;
  17         }
  18         return SkNEW_ARGS(SkDownSampleImageFilter, (scale, input));
  19     }
  20
  21     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkDownSampleImageFilter)
  22
  23 protected:
  24     SkDownSampleImageFilter(SkScalar scale, SkImageFilter* input)
  25       : INHERITED(1, &input), fScale(scale) {}
  26 #ifdef SK_SUPPORT_LEGACY_DEEPFLATTENING
  27     SkDownSampleImageFilter(SkReadBuffer& buffer);
  28 #endif
  29     virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE;
  30
  31     virtual bool onFilterImage(Proxy*, const SkBitmap& src, const Context&,
  32                                SkBitmap* result, SkIPoint* loc) const SK_OVERRIDE;
  33
  34 private:
  35     SkScalar fScale;
  36
  37     typedef SkImageFilter INHERITED;
  38 };
  39
  40 #endif