| 1 | /* |
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| 2 | * This file is part of KQuickCharts |
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| 3 | * SPDX-FileCopyrightText: 2019 Arjen Hiemstra <ahiemstra@heimr.nl> |
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| 4 | * |
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| 5 | * SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL |
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| 6 | */ |
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| 7 | |
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| 8 | #ifndef PIECHARTMATERIAL_H |
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| 9 | #define PIECHARTMATERIAL_H |
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| 10 | |
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| 11 | #include <QColor> |
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| 12 | #include <QSGMaterial> |
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| 13 | #include <QSGMaterialShader> |
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| 14 | |
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| 15 | #include "SDFShader.h" |
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| 16 | |
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| 17 | class PieChartMaterial : public QSGMaterial |
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| 18 | { |
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| 19 | public: |
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| 20 | PieChartMaterial(); |
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| 21 | ~PieChartMaterial(); |
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| 22 | |
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| 23 | QSGMaterialType *type() const override; |
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| 24 | QSGMaterialShader *createShader(QSGRendererInterface::RenderMode) const override; |
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| 25 | |
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| 26 | QVector2D aspectRatio() const; |
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| 27 | float innerRadius() const; |
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| 28 | float outerRadius() const; |
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| 29 | QColor backgroundColor() const; |
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| 30 | bool smoothEnds() const; |
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| 31 | float fromAngle() const; |
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| 32 | float toAngle() const; |
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| 33 | |
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| 34 | QList<QVector2D> segments() const; |
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| 35 | QList<QVector4D> colors() const; |
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| 36 | |
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| 37 | void setAspectRatio(const QVector2D &aspect); |
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| 38 | void setInnerRadius(float radius); |
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| 39 | void setOuterRadius(float radius); |
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| 40 | void setBackgroundColor(const QColor &color); |
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| 41 | void setSmoothEnds(bool smooth); |
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| 42 | void setFromAngle(float angle); |
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| 43 | void setToAngle(float angle); |
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| 44 | |
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| 45 | void setSegments(const QList<QVector2D> &triangles); |
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| 46 | void setColors(const QList<QVector4D> &colors); |
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| 47 | |
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| 48 | private: |
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| 49 | QVector2D m_aspectRatio; |
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| 50 | float m_innerRadius = 0.0f; |
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| 51 | float m_outerRadius = 0.0f; |
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| 52 | QColor m_backgroundColor; |
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| 53 | bool m_smoothEnds = false; |
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| 54 | float m_fromAngle = 0.0; |
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| 55 | float m_toAngle = 6.28318; // 2 * pi |
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| 56 | |
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| 57 | QList<QVector2D> m_segments; |
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| 58 | QList<QVector4D> m_colors; |
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| 59 | }; |
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| 60 | |
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| 61 | class PieChartShader : public SDFShader |
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| 62 | { |
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| 63 | public: |
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| 64 | PieChartShader(); |
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| 65 | ~PieChartShader(); |
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| 66 | |
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| 67 | bool updateUniformData(QSGMaterialShader::RenderState &state, QSGMaterial *newMaterial, QSGMaterial *oldMaterial) override; |
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| 68 | }; |
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| 69 | |
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| 70 | #endif // PIECHARTMATERIAL_H |
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| 71 | |
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