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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QPAINTENGINE_P_H
#define QPAINTENGINE_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists for the convenience
// of other Qt classes. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <QtGui/private/qtguiglobal_p.h>
#include "QtGui/qpainter.h"
#include "QtGui/qpaintengine.h"
#include "QtGui/qregion.h"
#include "private/qobject_p.h"
QT_BEGIN_NAMESPACE
class QPaintDevice;
class Q_GUI_EXPORT QPaintEnginePrivate
{
Q_DECLARE_PUBLIC(QPaintEngine)
public:
QPaintEnginePrivate() : pdev(0), q_ptr(0), currentClipDevice(0), hasSystemTransform(0),
hasSystemViewport(0) {}
virtual ~QPaintEnginePrivate();
QPaintDevice *pdev;
QPaintEngine *q_ptr;
QRegion systemClip;
QRect systemRect;
QRegion systemViewport;
QTransform systemTransform;
QPaintDevice *currentClipDevice;
uint hasSystemTransform : 1;
uint hasSystemViewport : 1;
inline void transformSystemClip()
{
if (systemClip.isEmpty())
return;
if (hasSystemTransform) {
if (systemTransform.type() <= QTransform::TxTranslate)
systemClip.translate(qRound(systemTransform.dx()), qRound(systemTransform.dy()));
else
systemClip = systemTransform.map(systemClip);
}
// Make sure we're inside the viewport.
if (hasSystemViewport) {
systemClip &= systemViewport;
if (systemClip.isEmpty()) {
// We don't want to paint without system clip, so set it to 1 pixel :)
systemClip = QRect(systemViewport.boundingRect().topLeft(), QSize(1, 1));
}
}
}
inline void setSystemTransform(const QTransform &xform)
{
systemTransform = xform;
if ((hasSystemTransform = !xform.isIdentity()) || hasSystemViewport)
transformSystemClip();
systemStateChanged();
}
inline void setSystemViewport(const QRegion ®ion)
{
systemViewport = region;
hasSystemViewport = !systemViewport.isEmpty();
}
virtual void systemStateChanged() { }
void drawBoxTextItem(const QPointF &p, const QTextItemInt &ti);
};
QT_END_NAMESPACE
#endif // QPAINTENGINE_P_H
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