Add lib/libkdchart

2012-02-11 14:34:29 +01:00
parent 67e00fcaa1
commit 9e1686bd6e
278 changed files with 221 additions and 13 deletions
--- a/lib/libkdchart/src/KDChartPainterSaver_p.h
+++ b/lib/libkdchart/src/KDChartPainterSaver_p.h
@@ -0,0 +1,111 @@
+/****************************************************************************
+** Copyright (C) 2001-2011 Klaralvdalens Datakonsult AB.  All rights reserved.
+**
+** This file is part of the KD Chart library.
+**
+** Licensees holding valid commercial KD Chart licenses may use this file in
+** accordance with the KD Chart Commercial License Agreement provided with
+** the Software.
+**
+**
+** This file may be distributed and/or modified under the terms of the
+** GNU General Public License version 2 and version 3 as published by the
+** Free Software Foundation and appearing in the file LICENSE.GPL.txt included.
+**
+** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
+** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+**
+** Contact info@kdab.com if any conditions of this licensing are not
+** clear to you.
+**
+**********************************************************************/
+
+#ifndef KDCHARTPAINTERSAVER_P_H
+#define KDCHARTPAINTERSAVER_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the KD Chart API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <qpainter.h>
+
+#include <KDABLibFakes>
+
+
+namespace KDChart {
+
+/**
+   \internal
+
+   @short Resource Allocation Is Initialization for QPainter::save and
+   restore
+
+   Usage:
+
+   Instead of
+   \code
+   painter.save();
+   // ...
+   painter.restore();
+   \endcode
+
+   Use this:
+
+   \code
+   const QPainterSaver saver( &painter );
+   // ...
+   \endcode
+
+   which makes sure that restore() is called when exiting from guard
+   clauses, or when exceptions are thrown.
+*/
+class PainterSaver {
+    Q_DISABLE_COPY( PainterSaver )
+public:
+    explicit PainterSaver( QPainter* p )
+        : painter( p ) 
+    {
+#if defined Q_OS_WIN
+        static bool initialized = false;
+        static bool isQt4_3_0;
+        if( !initialized )
+        {
+            isQt4_3_0 = ( QString::fromLatin1( qVersion() ) == QString::fromLatin1( "4.3.0" ) );
+        }
+        initialized = true;
+        m_isQt4_3_0 = isQt4_3_0;
+#endif
+        p->save();
+    }
+
+    ~PainterSaver()
+    {
+#if defined Q_OS_WIN
+        // the use of setClipRect is a workaround for a bug in Qt 4.3.0 which could
+        // lead to an assert on Windows
+        if( m_isQt4_3_0 )
+        {
+            painter->setClipRect( 0, 0, 2, 2 );
+        }
+#endif
+        painter->restore(); 
+    }
+
+private:
+#if defined Q_OS_WIN
+    bool m_isQt4_3_0;
+#endif
+    QPainter* const painter;
+};
+
+}
+
+#endif /* KDCHARTPAINTERSAVER_P_H */
+