File indexing completed on 2024-05-05 16:16:42 

0001 /*
0002  * SPDX-FileCopyrightText: 2021 Arjen Hiemstra <ahiemstra@heimr.nl>
0003  *
0004  * SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
0005  */
0006 
0007 #ifndef PIECHARTMATERIAL_H
0008 #define PIECHARTMATERIAL_H
0009 
0010 #include <QColor>
0011 #include <QSGMaterial>
0012 #include <QSGMaterialShader>
0013 
0014 #include "SDFShader.h"
0015 
0016 class BarChartMaterial : public QSGMaterial
0017 {
0018 public:
0019     BarChartMaterial();
0020     ~BarChartMaterial();
0021 
0022     QSGMaterialType *type() const override;
0023 #if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
0024     QSGMaterialShader *createShader() const override;
0025 #else
0026     QSGMaterialShader *createShader(QSGRendererInterface::RenderMode) const override;
0027 #endif
0028     int compare(const QSGMaterial *other) const override;
0029 
0030     QVector2D aspect = QVector2D{1.0, 1.0};
0031     float radius = 0.0;
0032     QColor backgroundColor = Qt::transparent;
0033 };
0034 
0035 class BarChartShader : public SDFShader
0036 {
0037 public:
0038     BarChartShader();
0039     ~BarChartShader();
0040 
0041 #if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
0042     char const *const *attributeNames() const override;
0043 
0044     void initialize() override;
0045     void updateState(const RenderState &state, QSGMaterial *newMaterial, QSGMaterial *oldMaterial) override;
0046 
0047 private:
0048     int m_matrixLocation = 0;
0049     int m_opacityLocation = 0;
0050     int m_aspectLocation = 0;
0051     int m_backgroundColorLocation = 0;
0052     int m_radiusLocation = 0;
0053 #else
0054     bool updateUniformData(QSGMaterialShader::RenderState &state, QSGMaterial *newMaterial, QSGMaterial *oldMaterial) override;
0055 #endif
0056 };
0057 
0058 #endif // PIECHARTMATERIAL_H