epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 1 | |
vandebo@chromium.org | da912d6 | 2011-03-08 18:31:02 +0000 | [diff] [blame] | 2 | /* |
epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 3 | * Copyright 2011 Google Inc. |
vandebo@chromium.org | da912d6 | 2011-03-08 18:31:02 +0000 | [diff] [blame] | 4 | * |
epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 5 | * Use of this source code is governed by a BSD-style license that can be |
| 6 | * found in the LICENSE file. |
vandebo@chromium.org | da912d6 | 2011-03-08 18:31:02 +0000 | [diff] [blame] | 7 | */ |
| 8 | |
epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 9 | |
vandebo@chromium.org | da912d6 | 2011-03-08 18:31:02 +0000 | [diff] [blame] | 10 | #ifndef SkPDFShader_DEFINED |
| 11 | #define SkPDFShader_DEFINED |
| 12 | |
| 13 | #include "SkPDFStream.h" |
| 14 | #include "SkPDFTypes.h" |
vandebo@chromium.org | da912d6 | 2011-03-08 18:31:02 +0000 | [diff] [blame] | 15 | |
halcanary | 792c80f | 2015-02-20 07:21:05 -0800 | [diff] [blame] | 16 | class SkPDFCanon; |
halcanary | 530ea8e | 2015-01-23 06:17:35 -0800 | [diff] [blame] | 17 | class SkMatrix; |
| 18 | class SkShader; |
| 19 | struct SkIRect; |
vandebo@chromium.org | da912d6 | 2011-03-08 18:31:02 +0000 | [diff] [blame] | 20 | |
| 21 | /** \class SkPDFShader |
| 22 | |
| 23 | In PDF parlance, this is a pattern, used in place of a color when the |
| 24 | pattern color space is selected. |
| 25 | */ |
| 26 | |
vandebo@chromium.org | 421d644 | 2011-07-20 17:39:01 +0000 | [diff] [blame] | 27 | class SkPDFShader { |
vandebo@chromium.org | da912d6 | 2011-03-08 18:31:02 +0000 | [diff] [blame] | 28 | public: |
halcanary | 530ea8e | 2015-01-23 06:17:35 -0800 | [diff] [blame] | 29 | class State; |
| 30 | |
vandebo@chromium.org | da912d6 | 2011-03-08 18:31:02 +0000 | [diff] [blame] | 31 | /** Get the PDF shader for the passed SkShader. If the SkShader is |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 32 | * invalid in some way, returns nullptr. The reference count of |
vandebo@chromium.org | da912d6 | 2011-03-08 18:31:02 +0000 | [diff] [blame] | 33 | * the object is incremented and it is the caller's responsibility to |
| 34 | * unreference it when done. This is needed to accommodate the weak |
| 35 | * reference pattern used when the returned object is new and has no |
| 36 | * other references. |
fmalita | c3796c7 | 2015-01-13 08:06:11 -0800 | [diff] [blame] | 37 | * @param shader The SkShader to emulate. |
| 38 | * @param matrix The current transform. (PDF shaders are absolutely |
| 39 | * positioned, relative to where the page is drawn.) |
| 40 | * @param surfceBBox The bounding box of the drawing surface (with matrix |
| 41 | * already applied). |
halcanary | 530ea8e | 2015-01-23 06:17:35 -0800 | [diff] [blame] | 42 | * @param rasterScale Additional scale to be applied for early |
| 43 | * rasterization. |
vandebo@chromium.org | da912d6 | 2011-03-08 18:31:02 +0000 | [diff] [blame] | 44 | */ |
halcanary | 792c80f | 2015-02-20 07:21:05 -0800 | [diff] [blame] | 45 | static SkPDFObject* GetPDFShader(SkPDFCanon* canon, |
| 46 | SkScalar dpi, |
| 47 | const SkShader& shader, |
vandebo@chromium.org | da912d6 | 2011-03-08 18:31:02 +0000 | [diff] [blame] | 48 | const SkMatrix& matrix, |
fmalita | c3796c7 | 2015-01-13 08:06:11 -0800 | [diff] [blame] | 49 | const SkIRect& surfaceBBox, |
| 50 | SkScalar rasterScale); |
halcanary | 1437c1e | 2016-03-13 18:30:24 -0700 | [diff] [blame^] | 51 | |
| 52 | static sk_sp<SkPDFArray> MakeRangeObject(); |
halcanary | 530ea8e | 2015-01-23 06:17:35 -0800 | [diff] [blame] | 53 | }; |
vandebo@chromium.org | da912d6 | 2011-03-08 18:31:02 +0000 | [diff] [blame] | 54 | |
halcanary | 70d1554 | 2015-11-22 12:55:04 -0800 | [diff] [blame] | 55 | class SkPDFFunctionShader final : public SkPDFDict { |
halcanary | 530ea8e | 2015-01-23 06:17:35 -0800 | [diff] [blame] | 56 | public: |
halcanary | 792c80f | 2015-02-20 07:21:05 -0800 | [diff] [blame] | 57 | static SkPDFFunctionShader* Create(SkPDFCanon*, |
| 58 | SkAutoTDelete<SkPDFShader::State>*); |
halcanary | 530ea8e | 2015-01-23 06:17:35 -0800 | [diff] [blame] | 59 | virtual ~SkPDFFunctionShader(); |
| 60 | bool equals(const SkPDFShader::State&) const; |
halcanary | 530ea8e | 2015-01-23 06:17:35 -0800 | [diff] [blame] | 61 | |
| 62 | private: |
| 63 | SkAutoTDelete<const SkPDFShader::State> fShaderState; |
halcanary | 2e3f9d8 | 2015-02-27 12:41:03 -0800 | [diff] [blame] | 64 | SkPDFFunctionShader(SkPDFShader::State*); |
halcanary | 530ea8e | 2015-01-23 06:17:35 -0800 | [diff] [blame] | 65 | typedef SkPDFDict INHERITED; |
| 66 | }; |
| 67 | |
| 68 | /** |
| 69 | * A shader for PDF gradients. This encapsulates the function shader |
| 70 | * inside a tiling pattern while providing a common pattern interface. |
| 71 | * The encapsulation allows the use of a SMask for transparency gradients. |
| 72 | */ |
halcanary | 70d1554 | 2015-11-22 12:55:04 -0800 | [diff] [blame] | 73 | class SkPDFAlphaFunctionShader final : public SkPDFStream { |
halcanary | 530ea8e | 2015-01-23 06:17:35 -0800 | [diff] [blame] | 74 | public: |
halcanary | 792c80f | 2015-02-20 07:21:05 -0800 | [diff] [blame] | 75 | static SkPDFAlphaFunctionShader* Create(SkPDFCanon*, |
| 76 | SkScalar dpi, |
| 77 | SkAutoTDelete<SkPDFShader::State>*); |
halcanary | 530ea8e | 2015-01-23 06:17:35 -0800 | [diff] [blame] | 78 | virtual ~SkPDFAlphaFunctionShader(); |
halcanary | fb62b3d | 2015-01-21 09:59:14 -0800 | [diff] [blame] | 79 | bool equals(const SkPDFShader::State&) const; |
vandebo@chromium.org | da912d6 | 2011-03-08 18:31:02 +0000 | [diff] [blame] | 80 | |
halcanary | 530ea8e | 2015-01-23 06:17:35 -0800 | [diff] [blame] | 81 | private: |
| 82 | SkAutoTDelete<const SkPDFShader::State> fShaderState; |
halcanary | 2e3f9d8 | 2015-02-27 12:41:03 -0800 | [diff] [blame] | 83 | SkPDFAlphaFunctionShader(SkPDFShader::State*); |
halcanary | 547019e | 2015-03-24 08:12:55 -0700 | [diff] [blame] | 84 | typedef SkPDFStream INHERITED; |
halcanary | 530ea8e | 2015-01-23 06:17:35 -0800 | [diff] [blame] | 85 | }; |
commit-bot@chromium.org | 93a2e21 | 2013-07-23 23:16:03 +0000 | [diff] [blame] | 86 | |
halcanary | 70d1554 | 2015-11-22 12:55:04 -0800 | [diff] [blame] | 87 | class SkPDFImageShader final : public SkPDFStream { |
halcanary | 530ea8e | 2015-01-23 06:17:35 -0800 | [diff] [blame] | 88 | public: |
halcanary | 792c80f | 2015-02-20 07:21:05 -0800 | [diff] [blame] | 89 | static SkPDFImageShader* Create(SkPDFCanon*, |
| 90 | SkScalar dpi, |
| 91 | SkAutoTDelete<SkPDFShader::State>*); |
halcanary | 530ea8e | 2015-01-23 06:17:35 -0800 | [diff] [blame] | 92 | virtual ~SkPDFImageShader(); |
halcanary | 530ea8e | 2015-01-23 06:17:35 -0800 | [diff] [blame] | 93 | bool equals(const SkPDFShader::State&) const; |
vandebo@chromium.org | da912d6 | 2011-03-08 18:31:02 +0000 | [diff] [blame] | 94 | |
halcanary | 530ea8e | 2015-01-23 06:17:35 -0800 | [diff] [blame] | 95 | private: |
| 96 | SkAutoTDelete<const SkPDFShader::State> fShaderState; |
halcanary | 2e3f9d8 | 2015-02-27 12:41:03 -0800 | [diff] [blame] | 97 | SkPDFImageShader(SkPDFShader::State*); |
halcanary | 547019e | 2015-03-24 08:12:55 -0700 | [diff] [blame] | 98 | typedef SkPDFStream INHERITED; |
vandebo@chromium.org | da912d6 | 2011-03-08 18:31:02 +0000 | [diff] [blame] | 99 | }; |
| 100 | |
| 101 | #endif |