squircle.h Example File | Qt Quick 5.12.12

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- squircle.h Example File
- Qt 5.12.12 Reference Documentation

# squircle.h Example File

scenegraph/openglunderqml/squircle.h

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     #ifndef SQUIRCLE_H
     #define SQUIRCLE_H

     #include <QtQuick/QQuickItem>
     #include <QtGui/QOpenGLShaderProgram>
     #include <QtGui/QOpenGLFunctions>

     class SquircleRenderer : public QObject, protected QOpenGLFunctions
     {
         Q_OBJECT
     public:
         SquircleRenderer() : m_t(0), m_program(0) { }
         ~SquircleRenderer();

         void setT(qreal t) { m_t = t; }
         void setViewportSize(const QSize &size) { m_viewportSize = size; }
         void setWindow(QQuickWindow *window) { m_window = window; }

     public slots:
         void paint();

     private:
         QSize m_viewportSize;
         qreal m_t;
         QOpenGLShaderProgram *m_program;
         QQuickWindow *m_window;
     };

     class Squircle : public QQuickItem
     {
         Q_OBJECT
         Q_PROPERTY(qreal t READ t WRITE setT NOTIFY tChanged)

     public:
         Squircle();

         qreal t() const { return m_t; }
         void setT(qreal t);

     signals:
         void tChanged();

     public slots:
         void sync();
         void cleanup();

     private slots:
         void handleWindowChanged(QQuickWindow *win);

     private:
         qreal m_t;
         SquircleRenderer *m_renderer;
     };

     #endif // SQUIRCLE_H