| 1 | // Copyright (C) 2016 The Qt Company Ltd. |
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| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
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| 3 | |
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| 4 | #ifndef QOPENGLWIDGET_H |
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| 5 | #define QOPENGLWIDGET_H |
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| 6 | |
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| 7 | #include <QtOpenGLWidgets/qtopenglwidgetsglobal.h> |
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| 8 | |
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| 9 | #include <QtWidgets/QWidget> |
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| 10 | #include <QtGui/QSurfaceFormat> |
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| 11 | #include <QtGui/qopengl.h> |
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| 12 | |
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| 13 | QT_BEGIN_NAMESPACE |
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| 14 | |
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| 15 | class QOpenGLWidgetPrivate; |
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| 16 | |
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| 17 | class Q_OPENGLWIDGETS_EXPORT QOpenGLWidget : public QWidget |
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| 18 | { |
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| 19 | Q_OBJECT |
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| 20 | Q_DECLARE_PRIVATE(QOpenGLWidget) |
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| 21 | |
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| 22 | public: |
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| 23 | enum UpdateBehavior { |
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| 24 | NoPartialUpdate, |
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| 25 | PartialUpdate |
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| 26 | }; |
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| 27 | Q_ENUM(UpdateBehavior) |
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| 28 | |
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| 29 | enum TargetBuffer : uint8_t { |
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| 30 | LeftBuffer = 0, // Default |
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| 31 | RightBuffer // Only used when QSurfaceFormat::StereoBuffers is enabled |
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| 32 | }; |
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| 33 | Q_ENUM(TargetBuffer) |
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| 34 | |
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| 35 | explicit QOpenGLWidget(QWidget* parent = nullptr, Qt::WindowFlags f = Qt::WindowFlags()); |
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| 36 | ~QOpenGLWidget(); |
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| 37 | |
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| 38 | void setUpdateBehavior(UpdateBehavior updateBehavior); |
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| 39 | UpdateBehavior updateBehavior() const; |
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| 40 | |
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| 41 | void setFormat(const QSurfaceFormat &format); |
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| 42 | QSurfaceFormat format() const; |
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| 43 | |
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| 44 | GLenum textureFormat() const; |
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| 45 | void setTextureFormat(GLenum texFormat); |
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| 46 | |
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| 47 | bool isValid() const; |
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| 48 | |
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| 49 | void makeCurrent(); |
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| 50 | void makeCurrent(TargetBuffer targetBuffer); |
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| 51 | void doneCurrent(); |
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| 52 | |
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| 53 | QOpenGLContext *context() const; |
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| 54 | GLuint defaultFramebufferObject() const; |
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| 55 | GLuint defaultFramebufferObject(TargetBuffer targetBuffer) const; |
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| 56 | |
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| 57 | QImage grabFramebuffer(); |
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| 58 | QImage grabFramebuffer(TargetBuffer targetBuffer); |
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| 59 | |
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| 60 | TargetBuffer currentTargetBuffer() const; |
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| 61 | |
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| 62 | Q_SIGNALS: |
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| 63 | void aboutToCompose(); |
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| 64 | void frameSwapped(); |
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| 65 | void aboutToResize(); |
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| 66 | void resized(); |
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| 67 | |
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| 68 | protected: |
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| 69 | virtual void initializeGL(); |
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| 70 | virtual void resizeGL(int w, int h); |
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| 71 | virtual void paintGL(); |
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| 72 | |
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| 73 | void paintEvent(QPaintEvent *e) override; |
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| 74 | void resizeEvent(QResizeEvent *e) override; |
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| 75 | bool event(QEvent *e) override; |
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| 76 | |
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| 77 | int metric(QPaintDevice::PaintDeviceMetric metric) const override; |
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| 78 | QPaintDevice *redirected(QPoint *p) const override; |
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| 79 | QPaintEngine *paintEngine() const override; |
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| 80 | |
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| 81 | private: |
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| 82 | Q_DISABLE_COPY(QOpenGLWidget) |
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| 83 | }; |
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| 84 | |
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| 85 | QT_END_NAMESPACE |
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| 86 | |
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| 87 | #endif // QOPENGLWIDGET_H |
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| 88 | |
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