diff options
Diffstat (limited to 'src/plugins/platforms/windows/qwindowsbackingstore.cpp')
-rw-r--r-- | src/plugins/platforms/windows/qwindowsbackingstore.cpp | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/src/plugins/platforms/windows/qwindowsbackingstore.cpp b/src/plugins/platforms/windows/qwindowsbackingstore.cpp new file mode 100644 index 0000000000..a3698c4a7c --- /dev/null +++ b/src/plugins/platforms/windows/qwindowsbackingstore.cpp @@ -0,0 +1,143 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (info@qt.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 "qwindowsbackingstore.h" +#include "qwindowswindow.h" +#include "qwindowsnativeimage.h" +#include "qwindowscontext.h" + +#include <QtGui/QWindow> + +#include <QtCore/QDebug> + +QT_BEGIN_NAMESPACE + +/*! + \class QWindowsBackingStore + \brief Backing store for windows. + \ingroup qt-lighthouse-win +*/ + +QWindowsBackingStore::QWindowsBackingStore(QWindow *window) : + QPlatformBackingStore(window) +{ + if (QWindowsContext::verboseBackingStore) + qDebug() << __FUNCTION__ << this << window; +} + +QWindowsBackingStore::~QWindowsBackingStore() +{ + if (QWindowsContext::verboseBackingStore) + qDebug() << __FUNCTION__ << this; +} + +QPaintDevice *QWindowsBackingStore::paintDevice() +{ + Q_ASSERT(!m_image.isNull()); + return &m_image->image(); +} + +void QWindowsBackingStore::flush(QWindow *window, const QRegion ®ion, + const QPoint &offset) +{ + // TODO: Prepare paint for translucent windows. + const QRect br = region.boundingRect(); + if (QWindowsContext::verboseBackingStore > 1) + qDebug() << __FUNCTION__ << window << offset << br; + QWindowsWindow *rw = rasterWindow(); + const HDC dc = rw->getDC(); + if (!dc) { + qErrnoWarning("%s: GetDC failed", __FUNCTION__); + return; + } + + if (!BitBlt(dc, br.x(), br.y(), br.width(), br.height(), + m_image->hdc(), br.x() + offset.x(), br.y() + offset.y(), SRCCOPY)) + qErrnoWarning("%s: BitBlt failed", __FUNCTION__); + rw->releaseDC(); + // Write image for debug purposes. + if (QWindowsContext::verboseBackingStore > 2) { + static int n = 0; + const QString fileName = QString::fromAscii("win%1_%2.png"). + arg(rw->winId()).arg(n++); + m_image->image().save(fileName); + qDebug() << "Wrote " << m_image->image().size() << fileName; + } +} + +void QWindowsBackingStore::resize(const QSize &size, const QRegion ®ion) +{ + if (m_image.isNull() || m_image->image().size() != size) { + if (QWindowsContext::verboseBackingStore) { + QDebug nsp = qDebug().nospace(); + nsp << __FUNCTION__ << ' ' << rasterWindow()->window() + << ' ' << size << ' ' << region; + if (!m_image.isNull()) + nsp << " from: " << m_image->image().size(); + } + m_image.reset(new QWindowsNativeImage(size.width(), size.height(), + QWindowsNativeImage::systemFormat())); + } +} + +void QWindowsBackingStore::beginPaint(const QRegion ®ion) +{ + Q_UNUSED(region); + if (QWindowsContext::verboseBackingStore > 1) + qDebug() << __FUNCTION__; +} + +QWindowsWindow *QWindowsBackingStore::rasterWindow() const +{ + if (const QWindow *w = window()) + if (QPlatformWindow *pw = w->handle()) + return static_cast<QWindowsWindow *>(pw); + return 0; +} + +HDC QWindowsBackingStore::getDC() const +{ + if (!m_image.isNull()) + return m_image->hdc(); + return 0; +} + +QT_END_NAMESPACE |