| /* |
| * Copyright 2015 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef SkLatticeIter_DEFINED |
| #define SkLatticeIter_DEFINED |
| |
| #include "include/core/SkCanvas.h" |
| #include "include/core/SkScalar.h" |
| #include "include/private/SkTArray.h" |
| |
| struct SkIRect; |
| struct SkRect; |
| |
| /** |
| * Disect a lattice request into an sequence of src-rect / dst-rect pairs |
| */ |
| class SK_API SkLatticeIter { |
| public: |
| |
| static bool Valid(int imageWidth, int imageHeight, const SkCanvas::Lattice& lattice); |
| |
| SkLatticeIter(const SkCanvas::Lattice& lattice, const SkRect& dst); |
| |
| static bool Valid(int imageWidth, int imageHeight, const SkIRect& center); |
| |
| SkLatticeIter(int imageWidth, int imageHeight, const SkIRect& center, const SkRect& dst); |
| |
| /** |
| * While it returns true, use src/dst to draw the image/bitmap. Optional parameters |
| * isFixedColor and fixedColor specify if the rectangle is filled with a fixed color. |
| * If (*isFixedColor) is true, then (*fixedColor) contains the rectangle color. |
| */ |
| bool next(SkIRect* src, SkRect* dst, bool* isFixedColor = nullptr, |
| SkColor* fixedColor = nullptr); |
| |
| /** Version of above that converts the integer src rect to a scalar rect. */ |
| bool next(SkRect* src, SkRect* dst, bool* isFixedColor = nullptr, |
| SkColor* fixedColor = nullptr) { |
| SkIRect isrcR; |
| if (this->next(&isrcR, dst, isFixedColor, fixedColor)) { |
| *src = SkRect::Make(isrcR); |
| return true; |
| } |
| return false; |
| } |
| |
| /** |
| * Apply a matrix to the dst points. |
| */ |
| void mapDstScaleTranslate(const SkMatrix& matrix); |
| |
| /** |
| * Returns the number of rects that will actually be drawn. |
| */ |
| int numRectsToDraw() const { |
| return fNumRectsToDraw; |
| } |
| |
| private: |
| SkTArray<int> fSrcX; |
| SkTArray<int> fSrcY; |
| SkTArray<SkScalar> fDstX; |
| SkTArray<SkScalar> fDstY; |
| SkTArray<SkCanvas::Lattice::RectType> fRectTypes; |
| SkTArray<SkColor> fColors; |
| |
| int fCurrX; |
| int fCurrY; |
| int fNumRectsInLattice; |
| int fNumRectsToDraw; |
| }; |
| |
| #endif |