diff options
Diffstat (limited to 'src/plugins/platforms/wayland/qwaylandshmbackingstore.cpp')
| -rw-r--r-- | src/plugins/platforms/wayland/qwaylandshmbackingstore.cpp | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/src/plugins/platforms/wayland/qwaylandshmbackingstore.cpp b/src/plugins/platforms/wayland/qwaylandshmbackingstore.cpp new file mode 100644 index 0000000000..ccb50a73fb --- /dev/null +++ b/src/plugins/platforms/wayland/qwaylandshmbackingstore.cpp @@ -0,0 +1,143 @@ +/**************************************************************************** +** +** 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. +** +** $QT_BEGIN_LICENSE:LGPL$ +** GNU Lesser General Public License Usage +** 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. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU General +** Public License version 3.0 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 3.0 requirements will be met: +** http://www.gnu.org/copyleft/gpl.html. +** +** Other Usage +** Alternatively, this file may be used in accordance with the terms and +** conditions contained in a signed written agreement between you and Nokia. +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ +#include "qwaylandshmbackingstore.h" + +#include <QtCore/qdebug.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); +} + +QWaylandShmBackingStore::QWaylandShmBackingStore(QWindow *window) + : QPlatformBackingStore(window) + , mBuffer(0) + , mDisplay(QWaylandScreen::waylandScreenFromWindow(window)->display()) +{ +} + +QWaylandShmBackingStore::~QWaylandShmBackingStore() +{ +} + +QPaintDevice *QWaylandShmBackingStore::paintDevice() +{ + return mBuffer->image(); +} + +void QWaylandShmBackingStore::beginPaint(const QRegion &) +{ + QWaylandShmWindow *waylandWindow = static_cast<QWaylandShmWindow *>(window()->handle()); + Q_ASSERT(waylandWindow->windowType() == QWaylandWindow::Shm); + waylandWindow->waitForFrameSync(); +} + +void QWaylandShmBackingStore::flush(QWindow *window, const QRegion ®ion, const QPoint &offset) +{ + Q_UNUSED(window); + Q_UNUSED(offset); + QWaylandShmWindow *waylandWindow = static_cast<QWaylandShmWindow *>(window->handle()); + Q_ASSERT(waylandWindow->windowType() == QWaylandWindow::Shm); + waylandWindow->damage(region); +} + +void QWaylandShmBackingStore::resize(const QSize &size, const QRegion &) +{ + QWaylandShmWindow *waylandWindow = static_cast<QWaylandShmWindow *>(window()->handle()); + Q_ASSERT(waylandWindow->windowType() == QWaylandWindow::Shm); + + QImage::Format format = QPlatformScreen::platformScreenForWindow(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 |