147 lines
4.6 KiB
C++
147 lines
4.6 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/
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**
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** This file is part of the plugins of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** GNU Lesser General Public License Usage
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** This file may be used under the terms of the GNU Lesser General Public
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** License version 2.1 as published by the Free Software Foundation and
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** appearing in the file LICENSE.LGPL included in the packaging of this
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** file. Please review the following information to ensure the GNU Lesser
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** General Public License version 2.1 requirements will be met:
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU General
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** Public License version 3.0 as published by the Free Software Foundation
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** and appearing in the file LICENSE.GPL included in the packaging of this
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** file. Please review the following information to ensure the GNU General
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** Public License version 3.0 requirements will be met:
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** http://www.gnu.org/copyleft/gpl.html.
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**
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** Other Usage
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** Alternatively, this file may be used in accordance with the terms and
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** conditions contained in a signed written agreement between you and Nokia.
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**
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "qwindowsbackingstore.h"
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#include "qwindowswindow.h"
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#include "qwindowsnativeimage.h"
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#include "qwindowscontext.h"
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#include <QtGui/QWindow>
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#include <QtCore/QDebug>
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QT_BEGIN_NAMESPACE
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/*!
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\class QWindowsBackingStore
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\brief Backing store for windows.
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\ingroup qt-lighthouse-win
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*/
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QWindowsBackingStore::QWindowsBackingStore(QWindow *window) :
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QPlatformBackingStore(window)
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{
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if (QWindowsContext::verboseBackingStore)
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qDebug() << __FUNCTION__ << this << window;
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}
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QWindowsBackingStore::~QWindowsBackingStore()
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{
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if (QWindowsContext::verboseBackingStore)
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qDebug() << __FUNCTION__ << this;
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}
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QPaintDevice *QWindowsBackingStore::paintDevice()
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{
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Q_ASSERT(!m_image.isNull());
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return &m_image->image();
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}
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void QWindowsBackingStore::flush(QWindow *window, const QRegion ®ion,
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const QPoint &offset)
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{
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Q_ASSERT(window);
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// TODO: Prepare paint for translucent windows.
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const QRect br = region.boundingRect();
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if (QWindowsContext::verboseBackingStore > 1)
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qDebug() << __FUNCTION__ << window << offset << br;
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QWindowsWindow *rw = QWindowsWindow::baseWindowOf(window);
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const HDC dc = rw->getDC();
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if (!dc) {
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qErrnoWarning("%s: GetDC failed", __FUNCTION__);
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return;
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}
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if (!BitBlt(dc, br.x(), br.y(), br.width(), br.height(),
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m_image->hdc(), br.x() + offset.x(), br.y() + offset.y(), SRCCOPY))
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qErrnoWarning("%s: BitBlt failed", __FUNCTION__);
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rw->releaseDC();
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// Write image for debug purposes.
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if (QWindowsContext::verboseBackingStore > 2) {
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static int n = 0;
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const QString fileName = QString::fromAscii("win%1_%2.png").
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arg(rw->winId()).arg(n++);
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m_image->image().save(fileName);
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qDebug() << "Wrote " << m_image->image().size() << fileName;
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}
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}
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void QWindowsBackingStore::resize(const QSize &size, const QRegion ®ion)
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{
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if (m_image.isNull() || m_image->image().size() != size) {
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#ifndef QT_NO_DEBUG_OUTPUT
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if (QWindowsContext::verboseBackingStore) {
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QDebug nsp = qDebug().nospace();
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nsp << __FUNCTION__ << ' ' << rasterWindow()->window()
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<< ' ' << size << ' ' << region;
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if (!m_image.isNull())
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nsp << " from: " << m_image->image().size();
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}
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#endif
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m_image.reset(new QWindowsNativeImage(size.width(), size.height(),
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QWindowsNativeImage::systemFormat()));
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}
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}
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void QWindowsBackingStore::beginPaint(const QRegion ®ion)
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{
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Q_UNUSED(region);
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if (QWindowsContext::verboseBackingStore > 1)
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qDebug() << __FUNCTION__;
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}
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QWindowsWindow *QWindowsBackingStore::rasterWindow() const
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{
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if (const QWindow *w = window())
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if (QPlatformWindow *pw = w->handle())
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return static_cast<QWindowsWindow *>(pw);
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return 0;
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}
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HDC QWindowsBackingStore::getDC() const
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{
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if (!m_image.isNull())
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return m_image->hdc();
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return 0;
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}
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QT_END_NAMESPACE
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