1 /* 2 * Copyright (c) 2021 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #ifndef FOUNDATION_ACE_FRAMEWORKS_CORE_LAYERS_GRADIENT_LAYER_H 17 #define FOUNDATION_ACE_FRAMEWORKS_CORE_LAYERS_GRADIENT_LAYER_H 18 19 #include "flutter/lib/ui/dart_wrapper.h" 20 21 #include "base/geometry/point.h" 22 #include "base/geometry/rect.h" 23 #include "core/components/common/properties/color.h" 24 #include "core/pipeline/layers/offset_layer.h" 25 #include "core/pipeline/layers/scene_builder.h" 26 27 namespace OHOS::Ace::Flutter { 28 29 class GradientLayer : public OffsetLayer { 30 DECLARE_ACE_TYPE(GradientLayer, OffsetLayer) 31 public: 32 GradientLayer() = default; 33 ~GradientLayer() override = default; 34 35 void AddToScene(SceneBuilder& builder, double x, double y) override; 36 37 SetGradientRect(Rect rect)38 void SetGradientRect(Rect rect) 39 { 40 rect_ = rect; 41 } 42 SetPoints(const std::vector<Point> & points)43 void SetPoints(const std::vector<Point>& points) 44 { 45 if (points.empty()) { 46 return; 47 } 48 points_.clear(); 49 points_.insert(points_.begin(), points.begin(), points.end()); 50 } 51 SetColors(const std::vector<Color> & colors)52 void SetColors(const std::vector<Color>& colors) 53 { 54 if (colors.empty()) { 55 return; 56 } 57 colors_.clear(); 58 colors_.insert(colors_.begin(), colors.begin(), colors.end()); 59 } 60 SetBlendMode(SkBlendMode blendMode)61 void SetBlendMode(SkBlendMode blendMode) 62 { 63 blendMode_ = blendMode; 64 } 65 SetAlpha(uint8_t value)66 void SetAlpha(uint8_t value) 67 { 68 alpha_ = value; 69 } 70 71 protected: 72 uint8_t alpha_ = 255; // default 255 that means no transparent. 73 std::vector<Point> points_; 74 std::vector<Color> colors_; 75 SkBlendMode blendMode_ = SkBlendMode::kDstIn; 76 Rect rect_; 77 }; 78 79 } // namespace OHOS::Ace::Flutter 80 81 #endif // FOUNDATION_ACE_FRAMEWORKS_CORE_LAYERS_GRADIENT_LAYER_H 82