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, const PaintState& state); 55 void StrokeText(const std::string& text, double x, double y, const PaintState& state); 56 double MeasureText(const std::string& text, const PaintState& state); 57 double MeasureTextHeight(const std::string& text, const PaintState& state); 58 TextMetrics MeasureTextMetrics(const std::string& text, const PaintState& state); 59 60 void DrawImage(const Ace::CanvasImage& image, double width, double height); 61 void DrawPixelMap(RefPtr<PixelMap> pixelMap, const Ace::CanvasImage& image); 62 std::unique_ptr<Ace::ImageData> GetImageData(double left, double top, double width, double height); 63 void PutImageData(const Ace::ImageData& imageData); 64 65 void SetAntiAlias(bool isEnabled); 66 void SetFillRuleForPath(const CanvasFillRule rule); 67 void SetFillRuleForPath2D(const CanvasFillRule rule); 68 void SetFillPattern(const Ace::Pattern& pattern); 69 void SetFillGradient(const Ace::Gradient& gradient); 70 void SetAlpha(double alpha); 71 void SetCompositeType(CompositeOperation operation); 72 void SetLineWidth(double width); 73 void SetLineCap(LineCapStyle style); 74 void SetLineJoin(LineJoinStyle style); 75 void SetMiterLimit(double limit); 76 void SetTextAlign(TextAlign align); 77 void SetTextBaseline(TextBaseline baseline); 78 void SetShadowBlur(double blur); 79 void SetShadowOffsetX(double x); 80 void SetShadowOffsetY(double y); 81 void SetSmoothingEnabled(bool enabled); 82 void SetSmoothingQuality(const std::string& quality); 83 void SetLineDashOffset(double offset); 84 void SetShadowColor(const Color& color); 85 void SetStrokePattern(const Ace::Pattern& pattern); 86 void SetStrokeGradient(const Ace::Gradient& gradient); 87 void SetStrokeColor(const Color& color); 88 void SetFontWeight(FontWeight weight); 89 void SetFontStyle(FontStyle style); 90 void SetFontFamilies(const std::vector<std::string>& fontFamilies); 91 void SetFontSize(const Dimension& size); 92 void SetFillColor(const Color& color); 93 int32_t GetWidth(); 94 int32_t GetHeight(); 95 96 const LineDashParam& GetLineDash() const; 97 void SetLineDash(const std::vector<double>& segments); 98 99 void Save(); 100 void Restore(); 101 void Scale(double x, double y); 102 void Rotate(double angle); 103 void SetTransform(const TransformParam& param); 104 void ResetTransform(); 105 void Transform(const TransformParam& param); 106 void Translate(double x, double y); 107 std::string ToDataURL(const std::string& type, const double quality); 108 109 private: 110 RefPtr<OffscreenCanvasPaintMethod> offscreenPaintMethod_; 111 ACE_DISALLOW_COPY_AND_MOVE(OffscreenCanvasPattern); 112 }; 113 } // namespace OHOS::Ace::NG 114 115 #endif // FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_NG_PATTERN_CUSTOM_PAINT_OFFSCREEN_CANVAS_PATTERN_H 116