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 "base/geometry/point.h" 20 #include "base/geometry/rect.h" 21 #include "core/components/common/properties/color.h" 22 #include "core/pipeline/layers/offset_layer.h" 23 #include "core/pipeline/layers/scene_builder.h" 24 25 namespace OHOS::Ace::Flutter { 26 27 class GradientLayer : public OffsetLayer { 28 DECLARE_ACE_TYPE(GradientLayer, OffsetLayer) 29 public: 30 GradientLayer() = default; 31 ~GradientLayer() override = default; 32 33 void AddToScene(SceneBuilder& builder, double x, double y) override; 34 35 SetGradientRect(Rect rect)36 void SetGradientRect(Rect rect) 37 { 38 rect_ = rect; 39 } 40 SetPoints(const std::vector<Point> & points)41 void SetPoints(const std::vector<Point>& points) 42 { 43 if (points.empty()) { 44 return; 45 } 46 points_.clear(); 47 points_.insert(points_.begin(), points.begin(), points.end()); 48 } 49 SetColors(const std::vector<Color> & colors)50 void SetColors(const std::vector<Color>& colors) 51 { 52 if (colors.empty()) { 53 return; 54 } 55 colors_.clear(); 56 colors_.insert(colors_.begin(), colors.begin(), colors.end()); 57 } 58 SetBlendMode(SkBlendMode blendMode)59 void SetBlendMode(SkBlendMode blendMode) 60 { 61 blendMode_ = blendMode; 62 } 63 SetAlpha(uint8_t value)64 void SetAlpha(uint8_t value) 65 { 66 alpha_ = value; 67 } 68 69 protected: 70 uint8_t alpha_ = 255; // default 255 that means no transparent. 71 std::vector<Point> points_; 72 std::vector<Color> colors_; 73 SkBlendMode blendMode_ = SkBlendMode::kDstIn; 74 Rect rect_; 75 }; 76 77 } // namespace OHOS::Ace::Flutter 78 79 #endif // FOUNDATION_ACE_FRAMEWORKS_CORE_LAYERS_GRADIENT_LAYER_H 80