1// Copyright 2013 The Flutter Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#ifndef FLUTTER_LIB_UI_COLOR_FILTER_H_
6#define FLUTTER_LIB_UI_COLOR_FILTER_H_
7
8#include "flutter/lib/ui/dart_wrapper.h"
9#include "third_party/skia/include/core/SkColorFilter.h"
10#include "third_party/tonic/typed_data/typed_list.h"
11
12using tonic::DartPersistentValue;
13
14namespace tonic {
15class DartLibraryNatives;
16} // namespace tonic
17
18namespace flutter {
19
20// A handle to an SkCodec object.
21//
22// Doesn't mirror SkCodec's API but provides a simple sequential access API.
23class ColorFilter : public RefCountedDartWrappable<ColorFilter> {
24 DEFINE_WRAPPERTYPEINFO();
25 FML_FRIEND_MAKE_REF_COUNTED(ColorFilter);
26
27 public:
28 static fml::RefPtr<ColorFilter> Create();
29
30 // Flutter still defines the matrix to be biased by 255 in the last column
31 // (translate). skia is normalized, treating the last column as 0...1, so we
32 // post-scale here before calling the skia factory.
33 static sk_sp<SkColorFilter> MakeColorMatrixFilter255(const float array[20]);
34
35 void initMode(int color, int blend_mode);
36 void initMatrix(const tonic::Float32List& color_matrix);
37 void initSrgbToLinearGamma();
38 void initLinearToSrgbGamma();
39
40 ~ColorFilter() override;
41
42 sk_sp<SkColorFilter> filter() const { return filter_; }
43
44 static void RegisterNatives(tonic::DartLibraryNatives* natives);
45
46 private:
47 sk_sp<SkColorFilter> filter_;
48};
49
50} // namespace flutter
51
52#endif // FLUTTER_LIB_UI_COLOR_FILTER_H_
53