Matt Sarett | cdc651d | 2017-03-30 12:41:48 -0400 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2017 Google Inc. |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license that can be |
| 5 | * found in the LICENSE file. |
| 6 | */ |
| 7 | |
| 8 | #include "SkColorFilter.h" |
| 9 | #include "SkColorSpaceXformer.h" |
| 10 | #include "SkColorSpaceXform_Base.h" |
| 11 | #include "SkDrawLooper.h" |
| 12 | #include "SkGradientShader.h" |
| 13 | #include "SkImage_Base.h" |
Matt Sarett | 31abf1f | 2017-04-07 16:54:04 -0400 | [diff] [blame] | 14 | #include "SkImageFilter.h" |
Matt Sarett | e684483 | 2017-04-03 10:35:42 -0400 | [diff] [blame] | 15 | #include "SkImagePriv.h" |
Matt Sarett | cdc651d | 2017-03-30 12:41:48 -0400 | [diff] [blame] | 16 | #include "SkMakeUnique.h" |
| 17 | |
| 18 | std::unique_ptr<SkColorSpaceXformer> SkColorSpaceXformer::Make(sk_sp<SkColorSpace> dst) { |
| 19 | std::unique_ptr<SkColorSpaceXform> fromSRGB = SkColorSpaceXform_Base::New( |
| 20 | SkColorSpace::MakeSRGB().get(), dst.get(), SkTransferFunctionBehavior::kIgnore); |
| 21 | if (!fromSRGB) { |
| 22 | return nullptr; |
| 23 | } |
| 24 | |
| 25 | auto xformer = std::unique_ptr<SkColorSpaceXformer>(new SkColorSpaceXformer()); |
| 26 | xformer->fDst = std::move(dst); |
| 27 | xformer->fFromSRGB = std::move(fromSRGB); |
| 28 | return xformer; |
| 29 | } |
| 30 | |
| 31 | sk_sp<SkImage> SkColorSpaceXformer::apply(const SkImage* src) { |
Matt Sarett | cb87423 | 2017-04-05 11:41:27 -0400 | [diff] [blame] | 32 | return src->makeColorSpace(fDst, SkTransferFunctionBehavior::kIgnore); |
Matt Sarett | cdc651d | 2017-03-30 12:41:48 -0400 | [diff] [blame] | 33 | } |
| 34 | |
Matt Sarett | e684483 | 2017-04-03 10:35:42 -0400 | [diff] [blame] | 35 | sk_sp<SkImage> SkColorSpaceXformer::apply(const SkBitmap& src) { |
| 36 | sk_sp<SkImage> image = SkMakeImageFromRasterBitmap(src, kNever_SkCopyPixelsMode); |
| 37 | if (!image) { |
| 38 | return nullptr; |
| 39 | } |
| 40 | |
Matt Sarett | cb87423 | 2017-04-05 11:41:27 -0400 | [diff] [blame] | 41 | sk_sp<SkImage> xformed = image->makeColorSpace(fDst, SkTransferFunctionBehavior::kIgnore); |
Matt Sarett | e684483 | 2017-04-03 10:35:42 -0400 | [diff] [blame] | 42 | // We want to be sure we don't let the kNever_SkCopyPixelsMode image escape this stack frame. |
| 43 | SkASSERT(xformed != image); |
| 44 | return xformed; |
| 45 | } |
| 46 | |
Matt Sarett | c1b879f | 2017-04-17 17:18:57 -0400 | [diff] [blame] | 47 | // Currently, SkModeColorFilter is the only color filter that holds a color. And |
| 48 | // SkComposeColorFilter is the only color filter that holds another color filter. If this |
| 49 | // changes, this function will need updating. |
Matt Sarett | 6d72ed9 | 2017-04-10 16:35:33 -0400 | [diff] [blame] | 50 | sk_sp<SkColorFilter> SkColorSpaceXformer::apply(const SkColorFilter* colorFilter) { |
| 51 | SkColor color; |
| 52 | SkBlendMode mode; |
| 53 | if (colorFilter->asColorMode(&color, &mode)) { |
| 54 | return SkColorFilter::MakeModeFilter(this->apply(color), mode); |
| 55 | } |
| 56 | |
Matt Sarett | c1b879f | 2017-04-17 17:18:57 -0400 | [diff] [blame] | 57 | SkColorFilter* outer; |
| 58 | SkColorFilter* inner; |
| 59 | if (colorFilter->asACompose(&outer, &inner)) { |
| 60 | return SkColorFilter::MakeComposeFilter(this->apply(outer), this->apply(inner)); |
| 61 | } |
| 62 | |
Matt Sarett | 6d72ed9 | 2017-04-10 16:35:33 -0400 | [diff] [blame] | 63 | return sk_ref_sp(const_cast<SkColorFilter*>(colorFilter)); |
| 64 | } |
| 65 | |
Mike Klein | e908b94 | 2017-04-25 13:09:40 -0400 | [diff] [blame^] | 66 | sk_sp<SkImageFilter> SkColorSpaceXformer::apply(const SkImageFilter* imageFilter) { |
| 67 | return imageFilter->makeColorSpace(this); |
| 68 | } |
| 69 | |
Matt Sarett | cdc651d | 2017-03-30 12:41:48 -0400 | [diff] [blame] | 70 | void SkColorSpaceXformer::apply(SkColor* xformed, const SkColor* srgb, int n) { |
| 71 | SkAssertResult(fFromSRGB->apply(SkColorSpaceXform::kBGRA_8888_ColorFormat, xformed, |
| 72 | SkColorSpaceXform::kBGRA_8888_ColorFormat, srgb, |
| 73 | n, kUnpremul_SkAlphaType)); |
| 74 | } |
| 75 | |
| 76 | SkColor SkColorSpaceXformer::apply(SkColor srgb) { |
| 77 | SkColor xformed; |
| 78 | this->apply(&xformed, &srgb, 1); |
| 79 | return xformed; |
| 80 | } |
| 81 | |
Matt Sarett | cdc651d | 2017-03-30 12:41:48 -0400 | [diff] [blame] | 82 | const SkPaint& SkColorSpaceXformer::apply(const SkPaint& src) { |
| 83 | const SkPaint* result = &src; |
| 84 | auto get_dst = [&] { |
| 85 | if (result == &src) { |
| 86 | fDstPaint = src; |
| 87 | result = &fDstPaint; |
| 88 | } |
| 89 | return &fDstPaint; |
| 90 | }; |
| 91 | |
| 92 | // All SkColorSpaces have the same black point. |
| 93 | if (src.getColor() & 0xffffff) { |
| 94 | get_dst()->setColor(this->apply(src.getColor())); |
| 95 | } |
| 96 | |
| 97 | if (auto shader = src.getShader()) { |
Matt Sarett | 6cc6ae75 | 2017-04-18 18:29:12 -0400 | [diff] [blame] | 98 | auto replacement = shader->makeColorSpace(this); |
| 99 | if (replacement.get() != shader) { |
Matt Sarett | cdc651d | 2017-03-30 12:41:48 -0400 | [diff] [blame] | 100 | get_dst()->setShader(std::move(replacement)); |
| 101 | } |
| 102 | } |
| 103 | |
Matt Sarett | cdc651d | 2017-03-30 12:41:48 -0400 | [diff] [blame] | 104 | if (auto cf = src.getColorFilter()) { |
Matt Sarett | 6d72ed9 | 2017-04-10 16:35:33 -0400 | [diff] [blame] | 105 | auto replacement = this->apply(cf); |
| 106 | if (replacement.get() != cf) { |
| 107 | get_dst()->setColorFilter(std::move(replacement)); |
Matt Sarett | cdc651d | 2017-03-30 12:41:48 -0400 | [diff] [blame] | 108 | } |
| 109 | } |
| 110 | |
| 111 | if (auto looper = src.getDrawLooper()) { |
Matt Sarett | 6cc6ae75 | 2017-04-18 18:29:12 -0400 | [diff] [blame] | 112 | auto replacement = looper->makeColorSpace(this); |
| 113 | if (replacement.get() != looper) { |
| 114 | get_dst()->setDrawLooper(std::move(replacement)); |
| 115 | } |
Matt Sarett | cdc651d | 2017-03-30 12:41:48 -0400 | [diff] [blame] | 116 | } |
| 117 | |
Matt Sarett | 31abf1f | 2017-04-07 16:54:04 -0400 | [diff] [blame] | 118 | if (auto imageFilter = src.getImageFilter()) { |
Mike Klein | e908b94 | 2017-04-25 13:09:40 -0400 | [diff] [blame^] | 119 | auto replacement = this->apply(imageFilter); |
Matt Sarett | 6cc6ae75 | 2017-04-18 18:29:12 -0400 | [diff] [blame] | 120 | if (replacement.get() != imageFilter) { |
| 121 | get_dst()->setImageFilter(std::move(replacement)); |
| 122 | } |
Matt Sarett | 31abf1f | 2017-04-07 16:54:04 -0400 | [diff] [blame] | 123 | } |
| 124 | |
Matt Sarett | cdc651d | 2017-03-30 12:41:48 -0400 | [diff] [blame] | 125 | return *result; |
| 126 | } |
| 127 | |
| 128 | const SkPaint* SkColorSpaceXformer::apply(const SkPaint* src) { |
| 129 | return src ? &this->apply(*src) : nullptr; |
| 130 | } |