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_PAINTING_GRADIENT_H_
6#define FLUTTER_LIB_UI_PAINTING_GRADIENT_H_
7
8#include "flutter/lib/ui/dart_wrapper.h"
9#include "flutter/lib/ui/painting/matrix.h"
10#include "flutter/lib/ui/painting/shader.h"
11#include "third_party/skia/include/effects/SkGradientShader.h"
12#include "third_party/tonic/typed_data/typed_list.h"
13
14namespace tonic {
15class DartLibraryNatives;
16} // namespace tonic
17
18namespace flutter {
19
20// TODO: update this if/when Skia adds Decal mode skbug.com/7638
21static_assert(kSkTileModeCount >= 3, "Need to update tile mode enum");
22
23class CanvasGradient : public Shader {
24 DEFINE_WRAPPERTYPEINFO();
25 FML_FRIEND_MAKE_REF_COUNTED(CanvasGradient);
26
27 public:
28 ~CanvasGradient() override;
29 static fml::RefPtr<CanvasGradient> Create();
30
31 void initLinear(const tonic::Float32List& end_points,
32 const tonic::Int32List& colors,
33 const tonic::Float32List& color_stops,
34 SkTileMode tile_mode,
35 const tonic::Float64List& matrix4);
36
37 void initRadial(double center_x,
38 double center_y,
39 double radius,
40 const tonic::Int32List& colors,
41 const tonic::Float32List& color_stops,
42 SkTileMode tile_mode,
43 const tonic::Float64List& matrix4);
44
45 void initSweep(double center_x,
46 double center_y,
47 const tonic::Int32List& colors,
48 const tonic::Float32List& color_stops,
49 SkTileMode tile_mode,
50 double start_angle,
51 double end_angle,
52 const tonic::Float64List& matrix4);
53
54 void initTwoPointConical(double start_x,
55 double start_y,
56 double start_radius,
57 double end_x,
58 double end_y,
59 double end_radius,
60 const tonic::Int32List& colors,
61 const tonic::Float32List& color_stops,
62 SkTileMode tile_mode,
63 const tonic::Float64List& matrix4);
64
65 static void RegisterNatives(tonic::DartLibraryNatives* natives);
66
67 private:
68 CanvasGradient();
69};
70
71} // namespace flutter
72
73#endif // FLUTTER_LIB_UI_PAINTING_GRADIENT_H_
74