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/****************************************************************************
**
** Copyright (C) 2015 Pier Luigi Fiorini <pierluigi.fiorini@gmail.com>
** Copyright (C) 2014 Jolla Ltd, author: <giulio.camuffo@jollamobile.com>
** Contact: http://www.qt.io/licensing/
**
** This file is part of the QtWaylandCompositor module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL3$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPLv3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or later as published by the Free
** Software Foundation and appearing in the file LICENSE.GPL included in
** the packaging of this file. Please review the following information to
** ensure the GNU General Public License version 2.0 requirements will be
** met: http://www.gnu.org/licenses/gpl-2.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtQml/QQmlEngine>
#include <QQuickWindow>
#include <QOpenGLTextureBlitter>
#include <QOpenGLFramebufferObject>
#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 "qwaylandsurfacegrabber.h"
QT_BEGIN_NAMESPACE
class QWaylandQuickCompositorPrivate : public QWaylandCompositorPrivate
{
public:
QWaylandQuickCompositorPrivate(QWaylandCompositor *compositor)
: QWaylandCompositorPrivate(compositor)
{
}
protected:
QWaylandSurface *createDefaultSurface() Q_DECL_OVERRIDE
{
return new QWaylandQuickSurface();
}
};
QWaylandQuickCompositor::QWaylandQuickCompositor(QObject *parent)
: QWaylandCompositor(*new QWaylandQuickCompositorPrivate(this), parent)
{
}
/*!
* \qmlproperty list QtWaylandCompositor::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.
*
* \code
* import QtWayland.Compositor 1.0
*
* WaylandCompositor {
* extensions: [ WlShell {
* // ...
* } ]
* }
* \endcode
*/
void QWaylandQuickCompositor::create()
{
QWaylandCompositor::create();
}
void QWaylandQuickCompositor::classBegin()
{
}
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;
}
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;
QWaylandBufferRef buffer;
void run() Q_DECL_OVERRIDE
{
QOpenGLFramebufferObject fbo(buffer.size());
fbo.bind();
QOpenGLTextureBlitter blitter;
blitter.create();
blitter.bind();
glViewport(0, 0, buffer.size().width(), buffer.size().height());
QOpenGLTextureBlitter::Origin surfaceOrigin =
buffer.origin() == QWaylandSurface::OriginTopLeft
? QOpenGLTextureBlitter::OriginTopLeft
: QOpenGLTextureBlitter::OriginBottomLeft;
GLuint texture;
glGenTextures(1, &texture);
glBindTexture(GL_TEXTURE_2D, texture);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
buffer.bindToTexture();
blitter.blit(texture, QMatrix4x4(), surfaceOrigin);
blitter.release();
glDeleteTextures(1, &texture);
emit grabber->success(fbo.toImage());
}
};
GrabState *state = new GrabState;
state->grabber = grabber;
state->buffer = buffer;
static_cast<QQuickWindow *>(output->window())->scheduleRenderJob(state, QQuickWindow::NoStage);
}
QT_END_NAMESPACE
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