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50
51#ifndef SQUIRCLE_H
52#define SQUIRCLE_H
53
54#include <QtQuick/QQuickItem>
55#include <QtGui/QOpenGLShaderProgram>
56#include <QtGui/QOpenGLFunctions>
57
58
59
60//! [1]
61class SquircleRenderer : public QObject, protected QOpenGLFunctions
62{
63 Q_OBJECT
64public:
65 SquircleRenderer() : m_t(0), m_program(0) { }
66 ~SquircleRenderer();
67
68 void setT(qreal t) { m_t = t; }
69 void setViewportSize(const QSize &size) { m_viewportSize = size; }
70 void setWindow(QQuickWindow *window) { m_window = window; }
71
72public slots:
73 void init();
74 void paint();
75
76private:
77 QSize m_viewportSize;
78 qreal m_t;
79 QOpenGLShaderProgram *m_program;
80 QQuickWindow *m_window;
81};
82//! [1]
83
84//! [2]
85class Squircle : public QQuickItem
86{
87 Q_OBJECT
88 Q_PROPERTY(qreal t READ t WRITE setT NOTIFY tChanged)
89 QML_ELEMENT
90
91public:
92 Squircle();
93
94 qreal t() const { return m_t; }
95 void setT(qreal t);
96
97signals:
98 void tChanged();
99
100public slots:
101 void sync();
102 void cleanup();
103
104private slots:
105 void handleWindowChanged(QQuickWindow *win);
106
107private:
108 void releaseResources() override;
109
110 qreal m_t;
111 SquircleRenderer *m_renderer;
112};
113//! [2]
114
115#endif // SQUIRCLE_H
116

source code of qtdeclarative/examples/quick/scenegraph/openglunderqml/squircle.h