| /* |
| * Copyright 2013 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 SkPictureImageFilter_DEFINED |
| #define SkPictureImageFilter_DEFINED |
| |
| #include "SkImageFilter.h" |
| #include "SkPicture.h" |
| |
| class SK_API SkPictureImageFilter : public SkImageFilter { |
| public: |
| /** |
| * Refs the passed-in picture. |
| */ |
| static SkPictureImageFilter* Create(const SkPicture* picture) { |
| return new SkPictureImageFilter(picture); |
| } |
| |
| /** |
| * Refs the passed-in picture. cropRect can be used to crop or expand the destination rect when |
| * the picture is drawn. (No scaling is implied by the dest rect; only the CTM is applied.) |
| */ |
| static SkPictureImageFilter* Create(const SkPicture* picture, const SkRect& cropRect) { |
| return new SkPictureImageFilter(picture, cropRect, kDeviceSpace_PictureResolution, |
| kLow_SkFilterQuality); |
| } |
| |
| /** |
| * Refs the passed-in picture. The picture is rasterized at a resolution that matches the |
| * local coordinate space. If the picture needs to be resampled for drawing it into the |
| * destination canvas, bilinear filtering will be used. cropRect can be used to crop or |
| * expand the destination rect when the picture is drawn. (No scaling is implied by the |
| * dest rect; only the CTM is applied.) |
| */ |
| static SkPictureImageFilter* CreateForLocalSpace(const SkPicture* picture, |
| const SkRect& cropRect, |
| SkFilterQuality filterQuality) { |
| return new SkPictureImageFilter(picture, cropRect, kLocalSpace_PictureResolution, |
| filterQuality); |
| } |
| SK_TO_STRING_OVERRIDE() |
| SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkPictureImageFilter) |
| |
| protected: |
| enum PictureResolution { |
| kDeviceSpace_PictureResolution, |
| kLocalSpace_PictureResolution |
| }; |
| |
| explicit SkPictureImageFilter(const SkPicture* picture); |
| SkPictureImageFilter(const SkPicture* picture, const SkRect& cropRect, |
| PictureResolution, SkFilterQuality); |
| virtual ~SkPictureImageFilter(); |
| /* Constructs an SkPictureImageFilter object from an SkReadBuffer. |
| * Note: If the SkPictureImageFilter object construction requires bitmap |
| * decoding, the decoder must be set on the SkReadBuffer parameter by calling |
| * SkReadBuffer::setBitmapDecoder() before calling this constructor. |
| * @param SkReadBuffer Serialized picture data. |
| */ |
| void flatten(SkWriteBuffer&) const override; |
| virtual bool onFilterImage(Proxy*, const SkBitmap& src, const Context&, |
| SkBitmap* result, SkIPoint* offset) const override; |
| |
| private: |
| |
| |
| void drawPictureAtDeviceResolution(SkBaseDevice*, const SkIRect& deviceBounds, |
| const Context&) const; |
| void drawPictureAtLocalResolution(Proxy*, SkBaseDevice*, const SkIRect& deviceBounds, |
| const Context&) const; |
| |
| const SkPicture* fPicture; |
| SkRect fCropRect; |
| PictureResolution fPictureResolution; |
| SkFilterQuality fFilterQuality; |
| typedef SkImageFilter INHERITED; |
| }; |
| |
| #endif |