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authorLars Knoll <lars.knoll@nokia.com>2009-03-23 09:18:55 (GMT)
committerSimon Hausmann <simon.hausmann@nokia.com>2009-03-23 09:18:55 (GMT)
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Long live Qt 4.5!
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtGui module 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, 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.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#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/qpainter.h"
+#include "QtGui/qpaintengine.h"
+#include "QtGui/qregion.h"
+#include "private/qobject_p.h"
+
+QT_BEGIN_NAMESPACE
+
+class QPaintDevice;
+
+class QPaintEnginePrivate
+{
+ Q_DECLARE_PUBLIC(QPaintEngine)
+public:
+ QPaintEnginePrivate() : pdev(0), q_ptr(0), currentClipWidget(0), hasSystemTransform(0),
+ hasSystemViewport(0) {}
+ virtual ~QPaintEnginePrivate() { }
+ QPaintDevice *pdev;
+ QPaintEngine *q_ptr;
+ QRegion systemClip;
+ QRegion systemViewport;
+ QTransform systemTransform;
+ QWidget *currentClipWidget;
+ uint hasSystemTransform : 1;
+ uint hasSystemViewport : 1;
+
+ inline void transformSystemClip()
+ {
+ if (systemClip.isEmpty())
+ return;
+
+ 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()))
+ transformSystemClip();
+ systemStateChanged();
+ }
+
+ inline void setSystemViewport(const QRegion &region)
+ {
+ systemViewport = region;
+ hasSystemViewport = !systemViewport.isEmpty();
+ }
+
+ virtual void systemStateChanged() { }
+
+ void drawBoxTextItem(const QPointF &p, const QTextItemInt &ti);
+
+private:
+ QRect systemRect;
+};
+
+QT_END_NAMESPACE
+
+#endif // QPAINTENGINE_P_H