1 files changed, 145 insertions, 0 deletions
diff --git a/src/plugins/platforms/wayland/qwaylandshmsurface.cpp b/src/plugins/platforms/wayland/qwaylandshmsurface.cpp
new file mode 100644
index 0000000000..34f4436f25
--- /dev/null
+++ b/src/plugins/platforms/wayland/qwaylandshmsurface.cpp
@@ -0,0 +1,145 @@
+/****************************************************************************
+**
+** 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 &region, 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