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add QOpenGLWidget for Qt<5.4 without opengl module
TODO: events, paintEngine
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,178 @@ | ||
| /****************************************************************************** | ||
| QtAV: Media play library based on Qt and FFmpeg | ||
| Copyright (C) 2015 Wang Bin <[email protected]> | ||
| * This file is part of QtAV | ||
| This library is free software; you can redistribute it and/or | ||
| modify it under the terms of the GNU Lesser General Public | ||
| License as published by the Free Software Foundation; either | ||
| version 2.1 of the License, or (at your option) any later version. | ||
| This library is distributed in the hope that it will be useful, | ||
| but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| Lesser General Public License for more details. | ||
| You should have received a copy of the GNU Lesser General Public | ||
| License along with this library; if not, write to the Free Software | ||
| Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
| ******************************************************************************/ | ||
| #include "QtAVWidgets/QOpenGLWidget.h" | ||
| #include <QResizeEvent> | ||
| #include <QWindow> | ||
|
|
||
| namespace QtAV { | ||
|
|
||
| QOpenGLWidget::QOpenGLWidget(QWidget *parent, Qt::WindowFlags f) | ||
| : QWidget(parent, f) | ||
| , m_initialized(false) | ||
| , m_fakeHidden(false) | ||
| , m_context(0) | ||
| , m_paintDevice(0) | ||
| { | ||
| setAttribute(Qt::WA_NativeWindow); // ensure windowHandle() is not null | ||
| // WA_PaintOnScreen: QWidget::paintEngine: Should no longer be called. This flag is only supported on X11 and it disables double buffering | ||
| //setAttribute(Qt::WA_PaintOnScreen); // enforce native window, so windowHandle() is not null | ||
| setAttribute(Qt::WA_NoSystemBackground); | ||
| setAutoFillBackground(true); // for compatibility | ||
| // FIXME: why setSurfaceType crash? | ||
| //windowHandle()->setSurfaceType(QWindow::OpenGLSurface); | ||
| } | ||
|
|
||
| QOpenGLWidget::~QOpenGLWidget() | ||
| { | ||
| delete m_paintDevice; | ||
| } | ||
|
|
||
| void QOpenGLWidget::setFormat(const QSurfaceFormat &format) | ||
| { | ||
| m_requestedFormat = format; | ||
| } | ||
|
|
||
| QSurfaceFormat QOpenGLWidget::format() const | ||
| { | ||
| return m_requestedFormat; | ||
| } | ||
|
|
||
| bool QOpenGLWidget::isValid() const | ||
| { | ||
| return m_initialized && m_context->isValid(); | ||
| } | ||
|
|
||
| void QOpenGLWidget::makeCurrent() | ||
| { | ||
| if (!m_initialized) { | ||
| qWarning("QOpenGLWidget: Cannot make uninitialized widget current"); | ||
| return; | ||
| } | ||
| if (!windowHandle()) { | ||
| qWarning("QOpenGLWidget: No window handle"); | ||
| return; | ||
| } | ||
| m_context->makeCurrent((QSurface*)windowHandle()); | ||
| } | ||
|
|
||
| void QOpenGLWidget::doneCurrent() | ||
| { | ||
| if (!m_initialized) | ||
| return; | ||
| m_context->doneCurrent(); | ||
| } | ||
|
|
||
| QOpenGLContext *QOpenGLWidget::context() const | ||
| { | ||
| return m_context; | ||
| } | ||
|
|
||
| void QOpenGLWidget::initializeGL() | ||
| { | ||
| } | ||
| void QOpenGLWidget::paintGL() | ||
| { | ||
| } | ||
|
|
||
| void QOpenGLWidget::resizeGL(int w, int h) | ||
| { | ||
| Q_UNUSED(w); | ||
| Q_UNUSED(h); | ||
| } | ||
|
|
||
| void QOpenGLWidget::paintEvent(QPaintEvent *e) | ||
| { | ||
| Q_UNUSED(e); | ||
| if (!m_initialized) | ||
| return; | ||
| if (updatesEnabled()) | ||
| render(); | ||
| } | ||
|
|
||
| void QOpenGLWidget::resizeEvent(QResizeEvent *e) | ||
| { | ||
| if (e->size().isEmpty()) { | ||
| m_fakeHidden = true; | ||
| return; | ||
| } | ||
| m_fakeHidden = false; | ||
| initialize(); | ||
| if (!m_initialized) | ||
| return; | ||
| //recreateFbo(); | ||
| resizeGL(width(), height()); | ||
| invokeUserPaint(); | ||
| //resolveSamples(); | ||
| } | ||
|
|
||
| void QOpenGLWidget::initialize() | ||
| { | ||
| if (m_initialized) | ||
| return; | ||
|
|
||
| QWindow *win = windowHandle(); | ||
| if (!win) { | ||
| qWarning("QOpenGLWidget: No window handle"); | ||
| return; | ||
| } | ||
| m_context = new QOpenGLContext(this); | ||
| // TODO: shareContext() | ||
| m_context->setFormat(m_requestedFormat); | ||
| if (!m_context->create()) { | ||
| qWarning("QOpenGLWidget: Failed to create context"); | ||
| return; | ||
| } | ||
| //m_context = QOpenGLContext::currentContext(); | ||
| if (!m_context) { | ||
| qWarning("QOpenGLWidget: QOpenGLContext is null"); | ||
| return; | ||
| } | ||
| if (!m_context->makeCurrent(win)) { | ||
| qWarning("QOpenGLWidget: Failed to make context current"); | ||
| return; | ||
| } | ||
| m_paintDevice = new QOpenGLPaintDevice(); | ||
| m_paintDevice->setSize(size() * devicePixelRatio()); | ||
| m_paintDevice->setDevicePixelRatio(devicePixelRatio()); | ||
| m_initialized = true; | ||
| initializeGL(); | ||
| } | ||
|
|
||
| void QOpenGLWidget::render() | ||
| { | ||
| if (m_fakeHidden || !m_initialized) | ||
| return; | ||
| // QOpenGLContext::swapBuffers() called with non-exposed window, behavior is undefined | ||
| if (!windowHandle() || !windowHandle()->isExposed()) | ||
| return; | ||
| makeCurrent(); | ||
| invokeUserPaint(); | ||
| m_context->swapBuffers(windowHandle()); | ||
| } | ||
|
|
||
| void QOpenGLWidget::invokeUserPaint() | ||
| { | ||
| QOpenGLFunctions *f = QOpenGLContext::currentContext()->functions(); | ||
| f->glViewport(0, 0, width()*devicePixelRatio(), height()*devicePixelRatio()); | ||
| paintGL(); | ||
| f->glFlush(); | ||
| } | ||
| } //namespace QtAV |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,72 @@ | ||
| /****************************************************************************** | ||
| QtAV: Media play library based on Qt and FFmpeg | ||
| Copyright (C) 2015 Wang Bin <[email protected]> | ||
| * This file is part of QtAV | ||
| This library is free software; you can redistribute it and/or | ||
| modify it under the terms of the GNU Lesser General Public | ||
| License as published by the Free Software Foundation; either | ||
| version 2.1 of the License, or (at your option) any later version. | ||
| This library is distributed in the hope that it will be useful, | ||
| but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| Lesser General Public License for more details. | ||
| You should have received a copy of the GNU Lesser General Public | ||
| License along with this library; if not, write to the Free Software | ||
| Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
| ******************************************************************************/ | ||
|
|
||
| #ifndef QTAV_QOPENGLWIDGET_H | ||
| #define QTAV_QOPENGLWIDGET_H | ||
|
|
||
| #include <QtAVWidgets/global.h> | ||
| #if QT_VERSION < QT_VERSION_CHECK(5, 0, 0) | ||
| #error "Qt5 is required!" | ||
| #endif | ||
| #include <QtGui/QOpenGLFunctions> | ||
| #include <QtGui/QOpenGLPaintDevice> | ||
| #include <QtGui/QSurfaceFormat> | ||
| #include <QtWidgets/QWidget> | ||
|
|
||
| namespace QtAV { | ||
|
|
||
| /*! | ||
| * \brief The QOpenGLWidget class | ||
| * A widget for rendering OpenGL graphics without QtOpenGL module | ||
| */ | ||
| class Q_AVWIDGETS_EXPORT QOpenGLWidget : public QWidget | ||
| { | ||
| Q_OBJECT | ||
| Q_DISABLE_COPY(QOpenGLWidget) | ||
| public: | ||
| explicit QOpenGLWidget(QWidget* parent = 0, Qt::WindowFlags f = 0); | ||
| virtual ~QOpenGLWidget(); | ||
| void setFormat(const QSurfaceFormat &format); | ||
| QSurfaceFormat format() const; | ||
| bool isValid() const; | ||
| void makeCurrent(); | ||
| void doneCurrent(); | ||
| QOpenGLContext *context() const; | ||
| protected: | ||
| virtual void initializeGL(); | ||
| virtual void resizeGL(int w, int h); | ||
| virtual void paintGL(); | ||
| void paintEvent(QPaintEvent *e) Q_DECL_OVERRIDE; | ||
| void resizeEvent(QResizeEvent *e) Q_DECL_OVERRIDE; | ||
| private: | ||
| void initialize(); | ||
| void render(); | ||
| void invokeUserPaint(); | ||
|
|
||
| bool m_initialized; | ||
| bool m_fakeHidden; | ||
| QOpenGLContext *m_context; | ||
| QOpenGLPaintDevice *m_paintDevice; | ||
| QSurfaceFormat m_requestedFormat; | ||
| }; | ||
| } //namespace QtAV | ||
|
|
||
| #endif //QTAV_QOPENGLWIDGET_H |
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