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/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the plugins of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qwaylandshmsurface.h"
#include <QtCore/qdebug.h>
#include <QtGui/private/qapplication_p.h>
#include "qwaylanddisplay.h"
#include "qwaylandshmwindow.h"
#include "qwaylandscreen.h"
#include <wayland-client.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <sys/mman.h>
QT_BEGIN_NAMESPACE
QWaylandShmBuffer::QWaylandShmBuffer(QWaylandDisplay *display,
const QSize &size, QImage::Format format)
{
int stride = size.width() * 4;
int alloc = stride * size.height();
char filename[] = "/tmp/wayland-shm-XXXXXX";
int fd = mkstemp(filename);
if (fd < 0)
qWarning("open %s failed: %s", filename, strerror(errno));
if (ftruncate(fd, alloc) < 0) {
qWarning("ftruncate failed: %s", strerror(errno));
close(fd);
return;
}
uchar *data = (uchar *)
mmap(NULL, alloc, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
unlink(filename);
if (data == (uchar *) MAP_FAILED) {
qWarning("mmap /dev/zero failed: %s", strerror(errno));
close(fd);
return;
}
mImage = QImage(data, size.width(), size.height(), stride, format);
mBuffer = display->createShmBuffer(fd, size.width(), size.height(),
stride, display->argbVisual());
close(fd);
}
QWaylandShmBuffer::~QWaylandShmBuffer(void)
{
munmap((void *) mImage.constBits(), mImage.byteCount());
wl_buffer_destroy(mBuffer);
}
QWaylandShmWindowSurface::QWaylandShmWindowSurface(QWidget *window)
: QWindowSurface(window)
, mBuffer(0)
, mDisplay(QWaylandScreen::waylandScreenFromWidget(window)->display())
{
}
QWaylandShmWindowSurface::~QWaylandShmWindowSurface()
{
}
QPaintDevice *QWaylandShmWindowSurface::paintDevice()
{
return mBuffer->image();
}
void QWaylandShmWindowSurface::beginPaint(const QRegion &)
{
QWaylandShmWindow *waylandWindow = static_cast<QWaylandShmWindow *>(window()->platformWindow());
Q_ASSERT(waylandWindow->windowType() == QWaylandWindow::Shm);
waylandWindow->waitForFrameSync();
}
void QWaylandShmWindowSurface::flush(QWidget *widget, const QRegion ®ion, const QPoint &offset)
{
Q_UNUSED(widget);
Q_UNUSED(offset);
QWaylandShmWindow *waylandWindow = static_cast<QWaylandShmWindow *>(window()->platformWindow());
Q_ASSERT(waylandWindow->windowType() == QWaylandWindow::Shm);
waylandWindow->damage(region);
}
void QWaylandShmWindowSurface::resize(const QSize &size)
{
QWaylandShmWindow *waylandWindow = static_cast<QWaylandShmWindow *>(window()->platformWindow());
Q_ASSERT(waylandWindow->windowType() == QWaylandWindow::Shm);
QWindowSurface::resize(size);
QImage::Format format = QPlatformScreen::platformScreenForWidget(window())->format();
if (mBuffer != NULL && mBuffer->size() == size)
return;
if (mBuffer != NULL)
delete mBuffer;
mBuffer = new QWaylandShmBuffer(mDisplay, size, format);
waylandWindow->attach(mBuffer);
}
QT_END_NAMESPACE
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