| /* |
| * Copyright 2011 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| |
| #ifndef SkPDFShader_DEFINED |
| #define SkPDFShader_DEFINED |
| |
| #include "SkBitmapKey.h" |
| #include "SkPDFTypes.h" |
| #include "SkShader.h" |
| |
| class SkPDFCanon; |
| class SkPDFDocument; |
| class SkMatrix; |
| struct SkIRect; |
| |
| /** \class SkPDFShader |
| |
| In PDF parlance, this is a pattern, used in place of a color when the |
| pattern color space is selected. |
| */ |
| |
| class SkPDFShader { |
| public: |
| /** Get the PDF shader for the passed SkShader. If the SkShader is |
| * invalid in some way, returns nullptr. The reference count of |
| * the object is incremented and it is the caller's responsibility to |
| * unreference it when done. This is needed to accommodate the weak |
| * reference pattern used when the returned object is new and has no |
| * other references. |
| * @param shader The SkShader to emulate. |
| * @param matrix The current transform. (PDF shaders are absolutely |
| * positioned, relative to where the page is drawn.) |
| * @param surfceBBox The bounding box of the drawing surface (with matrix |
| * already applied). |
| */ |
| static sk_sp<SkPDFObject> GetPDFShader(SkPDFDocument* doc, |
| SkShader* shader, |
| const SkMatrix& matrix, |
| const SkIRect& surfaceBBox); |
| |
| static sk_sp<SkPDFArray> MakeRangeObject(); |
| |
| SK_BEGIN_REQUIRE_DENSE |
| struct State { |
| SkMatrix fCanvasTransform; |
| SkMatrix fShaderTransform; |
| SkIRect fBBox; |
| SkBitmapKey fBitmapKey; |
| SkShader::TileMode fImageTileModes[2]; |
| }; |
| SK_END_REQUIRE_DENSE |
| }; |
| |
| inline bool operator==(const SkPDFShader::State& a, const SkPDFShader::State& b) { |
| SkASSERT(a.fBitmapKey.fID != 0); |
| SkASSERT(b.fBitmapKey.fID != 0); |
| return a.fCanvasTransform == b.fCanvasTransform |
| && a.fShaderTransform == b.fShaderTransform |
| && a.fBBox == b.fBBox |
| && a.fBitmapKey == b.fBitmapKey |
| && a.fImageTileModes[0] == b.fImageTileModes[0] |
| && a.fImageTileModes[1] == b.fImageTileModes[1]; |
| } |
| |
| #endif |