| /* |
| * 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 "include/core/SkShader.h" |
| #include "include/private/base/SkMacros.h" |
| #include "src/pdf/SkBitmapKey.h" |
| #include "src/pdf/SkPDFTypes.h" |
| |
| |
| class SkPDFDocument; |
| class SkMatrix; |
| struct SkIRect; |
| |
| /** Make a PDF shader for the passed SkShader. If the SkShader is invalid in |
| * some way, returns nullptr. |
| * |
| * In PDF parlance, this is a pattern, used in place of a color when the |
| * pattern color space is selected. |
| * |
| * May cache the shader in the document for later re-use. If this function is |
| * called again with an equivalent shader, a new reference to the cached pdf |
| * shader may be returned. |
| * |
| * @param doc The parent document, must be non-null. |
| * @param shader The SkShader to emulate. |
| * @param ctm The current transform matrix. (PDF shaders are absolutely |
| * positioned, relative to where the page is drawn.) |
| * @param surfaceBBox The bounding box of the drawing surface (with matrix |
| * already applied). |
| * @param paintColor Color+Alpha of the paint. Color is usually ignored, |
| * unless it is a alpha shader. |
| */ |
| SkPDFIndirectReference SkPDFMakeShader(SkPDFDocument* doc, |
| SkShader* shader, |
| const SkMatrix& ctm, |
| const SkIRect& surfaceBBox, |
| SkColor4f paintColor); |
| |
| SK_BEGIN_REQUIRE_DENSE |
| struct SkPDFImageShaderKey { |
| SkMatrix fTransform; |
| SkIRect fBBox; |
| SkBitmapKey fBitmapKey; |
| SkTileMode fImageTileModes[2]; |
| SkColor4f fPaintColor; |
| }; |
| SK_END_REQUIRE_DENSE |
| |
| inline bool operator==(const SkPDFImageShaderKey& a, const SkPDFImageShaderKey& b) { |
| SkASSERT(a.fBitmapKey.fID != 0); |
| SkASSERT(b.fBitmapKey.fID != 0); |
| return a.fTransform == b.fTransform |
| && a.fBBox == b.fBBox |
| && a.fBitmapKey == b.fBitmapKey |
| && a.fImageTileModes[0] == b.fImageTileModes[0] |
| && a.fImageTileModes[1] == b.fImageTileModes[1] |
| && a.fPaintColor == b.fPaintColor; |
| } |
| #endif |