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 SkOffsetImageFilter_DEFINED 9 #define SkOffsetImageFilter_DEFINED 10 11 #include "SkImageFilter.h" 12 #include "SkPoint.h" 13 14 class SK_API SkOffsetImageFilter : public SkImageFilter { 15 typedef SkImageFilter INHERITED; 16 17 public: 18 static SkOffsetImageFilter* Create(SkScalar dx, SkScalar dy, SkImageFilter* input = NULL, 19 const CropRect* cropRect = NULL, 20 uint32_t uniqueID = 0) { 21 if (!SkScalarIsFinite(dx) || !SkScalarIsFinite(dy)) { 22 return NULL; 23 } 24 return SkNEW_ARGS(SkOffsetImageFilter, (dx, dy, input, cropRect, uniqueID)); 25 } 26 virtual void computeFastBounds(const SkRect& src, SkRect* dst) const SK_OVERRIDE; 27 SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkOffsetImageFilter) 28 29 protected: 30 SkOffsetImageFilter(SkScalar dx, SkScalar dy, SkImageFilter* input, const CropRect* cropRect, uint32_t uniqueID); 31 #ifdef SK_SUPPORT_LEGACY_DEEPFLATTENING 32 explicit SkOffsetImageFilter(SkReadBuffer& buffer); 33 #endif 34 virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE; 35 36 virtual bool onFilterImage(Proxy*, const SkBitmap& src, const Context&, 37 SkBitmap* result, SkIPoint* loc) const SK_OVERRIDE; 38 virtual bool onFilterBounds(const SkIRect&, const SkMatrix&, SkIRect*) const SK_OVERRIDE; 39 40 private: 41 SkVector fOffset; 42 }; 43 44 #endif 45
