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// Copyright (C) 2017 Pier Luigi Fiorini <pierluigi.fiorini@gmail.com>
// Copyright (C) 2017 Jolla Ltd, author: <giulio.camuffo@jollamobile.com>
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
#include <QtQml/QQmlEngine>
#include <QQuickWindow>
#if QT_CONFIG(opengl)
# include <QOpenGLTextureBlitter>
# include <QOpenGLTexture>
# include <QOpenGLFramebufferObject>
#endif
#include <QMatrix4x4>
#include <QRunnable>
#include "qwaylandclient.h"
#include "qwaylandquickcompositor.h"
#include "qwaylandquicksurface.h"
#include "qwaylandquickoutput.h"
#include "qwaylandquickitem.h"
#include "qwaylandoutput.h"
#include <QtWaylandCompositor/private/qwaylandcompositor_p.h>
#include <QtWaylandCompositor/QWaylandViewporter>
#include "qwaylandsurfacegrabber.h"
QT_BEGIN_NAMESPACE
class QWaylandQuickCompositorPrivate : public QWaylandCompositorPrivate
{
public:
explicit QWaylandQuickCompositorPrivate(QWaylandCompositor *compositor)
: QWaylandCompositorPrivate(compositor)
, m_viewporter(new QWaylandViewporter(compositor))
{
}
protected:
QWaylandSurface *createDefaultSurface() override
{
return new QWaylandQuickSurface();
}
private:
QScopedPointer<QWaylandViewporter> m_viewporter;
};
QWaylandQuickCompositor::QWaylandQuickCompositor(QObject *parent)
: QWaylandCompositor(*new QWaylandQuickCompositorPrivate(this), parent)
{
}
/*!
* \qmlproperty list QtWayland.Compositor::WaylandCompositor::extensions
*
* A list of extensions that the compositor advertises to its clients. For
* any Wayland extension the compositor should support, instantiate its component,
* and add it to the list of extensions.
*
* For instance, the following code would allow the clients to request \c wl_shell
* surfaces in the compositor using the \c wl_shell interface.
*
* \qml
* import QtWayland.Compositor
*
* WaylandCompositor {
* WlShell {
* // ...
* }
* }
* \endqml
*/
void QWaylandQuickCompositor::create()
{
QWaylandCompositor::create();
}
void QWaylandQuickCompositor::classBegin()
{
QWaylandCompositorPrivate::get(this)->preInit();
}
void QWaylandQuickCompositor::componentComplete()
{
create();
}
/*!
* Grab the surface content from the given \a buffer.
* Reimplemented from QWaylandCompositor::grabSurface.
*/
void QWaylandQuickCompositor::grabSurface(QWaylandSurfaceGrabber *grabber, const QWaylandBufferRef &buffer)
{
if (buffer.isSharedMemory()) {
QWaylandCompositor::grabSurface(grabber, buffer);
return;
}
#if QT_CONFIG(opengl)
QWaylandQuickOutput *output = static_cast<QWaylandQuickOutput *>(defaultOutput());
if (!output) {
emit grabber->failed(QWaylandSurfaceGrabber::RendererNotReady);
return;
}
// We cannot grab the surface now, we need to have a current opengl context, so we
// need to be in the render thread
class GrabState : public QRunnable
{
public:
QWaylandSurfaceGrabber *grabber = nullptr;
QWaylandBufferRef buffer;
void run() override
{
QOpenGLFramebufferObject fbo(buffer.size());
fbo.bind();
QOpenGLTextureBlitter blitter;
blitter.create();
glViewport(0, 0, buffer.size().width(), buffer.size().height());
QOpenGLTextureBlitter::Origin surfaceOrigin =
buffer.origin() == QWaylandSurface::OriginTopLeft
? QOpenGLTextureBlitter::OriginTopLeft
: QOpenGLTextureBlitter::OriginBottomLeft;
auto texture = buffer.toOpenGLTexture();
blitter.bind(texture->target());
blitter.blit(texture->textureId(), QMatrix4x4(), surfaceOrigin);
blitter.release();
emit grabber->success(fbo.toImage());
}
};
GrabState *state = new GrabState;
state->grabber = grabber;
state->buffer = buffer;
static_cast<QQuickWindow *>(output->window())->scheduleRenderJob(state, QQuickWindow::AfterRenderingStage);
#else
emit grabber->failed(QWaylandSurfaceGrabber::UnknownBufferType);
#endif
}
QT_END_NAMESPACE
#include "moc_qwaylandquickcompositor.cpp"
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