1 /* 2 * Copyright (c) 2022 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_COMPONENTS_NG_PATTERN_CUSTOM_PAINT_OFFSCREEN_CANVAS_PATTERN_H 17 #define FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_NG_PATTERN_CUSTOM_PAINT_OFFSCREEN_CANVAS_PATTERN_H 18 19 #include "base/memory/referenced.h" 20 #include "core/components/common/properties/paint_state.h" 21 #include "core/components_ng/pattern/pattern.h" 22 #include "core/pipeline_ng/pipeline_context.h" 23 24 namespace OHOS::Ace::NG { 25 class OffscreenCanvasPaintMethod; 26 // OffscreenCanvasPattern is the base class for custom paint render node to perform paint canvas. 27 class ACE_EXPORT OffscreenCanvasPattern : public Pattern { 28 DECLARE_ACE_TYPE(OffscreenCanvasPattern, Pattern); 29 30 public: 31 OffscreenCanvasPattern(int32_t width, int32_t height); 32 ~OffscreenCanvasPattern() override = default; 33 34 void FillRect(const Rect& rect); 35 void StrokeRect(const Rect& rect); 36 void ClearRect(const Rect& rect); 37 void Fill(); 38 void Fill(const RefPtr<CanvasPath2D>& path); 39 void Stroke(); 40 void Stroke(const RefPtr<CanvasPath2D>& path); 41 void Clip(); 42 void Clip(const RefPtr<CanvasPath2D>& path); 43 void BeginPath(); 44 void ClosePath(); 45 void MoveTo(double x, double y); 46 void LineTo(double x, double y); 47 void Arc(const ArcParam& param); 48 void ArcTo(const ArcToParam& param); 49 void AddRect(const Rect& rect); 50 void Ellipse(const EllipseParam& param); 51 void BezierCurveTo(const BezierCurveParam& param); 52 void QuadraticCurveTo(const QuadraticCurveParam& param); 53 54 void FillText(const std::string& text, double x, double y, std::optional<double> maxWidth, const PaintState& state); 55 void StrokeText( 56 const std::string& text, double x, double y, std::optional<double> maxWidth, const PaintState& state); 57 double MeasureText(const std::string& text, const PaintState& state); 58 double MeasureTextHeight(const std::string& text, const PaintState& state); 59 TextMetrics MeasureTextMetrics(const std::string& text, const PaintState& state); 60 61 void DrawImage(const Ace::CanvasImage& image, double width, double height); 62 void DrawPixelMap(RefPtr<PixelMap> pixelMap, const Ace::CanvasImage& image); 63 std::unique_ptr<Ace::ImageData> GetImageData(double left, double top, double width, double height); 64 void GetImageData(const std::shared_ptr<Ace::ImageData>& imageData); 65 void PutImageData(const Ace::ImageData& imageData); 66 67 void SetAntiAlias(bool isEnabled); 68 void SetFillRuleForPath(const CanvasFillRule rule); 69 void SetFillRuleForPath2D(const CanvasFillRule rule); 70 void SetFillPattern(const std::weak_ptr<Ace::Pattern>& pattern); 71 void SetFillGradient(const Ace::Gradient& gradient); 72 void SetAlpha(double alpha); 73 void SetCompositeType(CompositeOperation operation); 74 void SetLineWidth(double width); 75 void SetLineCap(LineCapStyle style); 76 void SetLineJoin(LineJoinStyle style); 77 void SetMiterLimit(double limit); 78 void SetTextAlign(TextAlign align); 79 void SetTextBaseline(TextBaseline baseline); 80 void SetShadowBlur(double blur); 81 void SetShadowOffsetX(double x); 82 void SetShadowOffsetY(double y); 83 void SetSmoothingEnabled(bool enabled); 84 void SetSmoothingQuality(const std::string& quality); 85 void SetLineDashOffset(double offset); 86 void SetShadowColor(const Color& color); 87 void SetStrokePattern(const std::weak_ptr<Ace::Pattern>& pattern); 88 void SetStrokeGradient(const Ace::Gradient& gradient); 89 void SetStrokeColor(const Color& color); 90 void SetFontWeight(FontWeight weight); 91 void SetFontStyle(FontStyle style); 92 void SetFontFamilies(const std::vector<std::string>& fontFamilies); 93 void SetFontSize(const Dimension& size); 94 void SetFillColor(const Color& color); 95 int32_t GetWidth(); 96 int32_t GetHeight(); 97 98 LineDashParam GetLineDash() const; 99 void SetLineDash(const std::vector<double>& segments); 100 101 void SetTextDirection(TextDirection direction); 102 void SetFilterParam(const std::string& filterStr); 103 104 void Save(); 105 void Restore(); 106 void Scale(double x, double y); 107 void Rotate(double angle); 108 void SetTransform(const TransformParam& param); 109 void ResetTransform(); 110 void Transform(const TransformParam& param); 111 void Translate(double x, double y); 112 TransformParam GetTransform() const; 113 std::string ToDataURL(const std::string& type, const double quality); 114 115 bool IsSucceed(); 116 117 private: 118 RefPtr<OffscreenCanvasPaintMethod> offscreenPaintMethod_; 119 ACE_DISALLOW_COPY_AND_MOVE(OffscreenCanvasPattern); 120 }; 121 } // namespace OHOS::Ace::NG 122 123 #endif // FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_NG_PATTERN_CUSTOM_PAINT_OFFSCREEN_CANVAS_PATTERN_H 124