mitk: qxtheaderview.cpp Source File

Go to the documentation of this file.
00001 /****************************************************************************
00002  **
00003  ** Copyright (C) Qxt Foundation. Some rights reserved.
00004  **
00005  ** This file is part of the QxtGui module of the Qxt library.
00006  **
00007  ** This library is free software; you can redistribute it and/or modify it
00008  ** under the terms of the Common Public License, version 1.0, as published
00009  ** by IBM, and/or under the terms of the GNU Lesser General Public License,
00010  ** version 2.1, as published by the Free Software Foundation.
00011  **
00012  ** This file is provided "AS IS", without WARRANTIES OR CONDITIONS OF ANY
00013  ** KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT LIMITATION, ANY
00014  ** WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT, MERCHANTABILITY OR
00015  ** FITNESS FOR A PARTICULAR PURPOSE.
00016  **
00017  ** You should have received a copy of the CPL and the LGPL along with this
00018  ** file. See the LICENSE file and the cpl1.0.txt/lgpl-2.1.txt files
00019  ** included with the source distribution for more information.
00020  ** If you did not receive a copy of the licenses, contact the Qxt Foundation.
00021  **
00022  ** <http://libqxt.org>  <foundation@libqxt.org>
00023  **
00024  ****************************************************************************/
00025 #include "qxtheaderview.h"
00026 
00027 class QxtHeaderViewPrivate : public QxtPrivate<QxtHeaderView>
00028 {
00029 public:
00030     QXT_DECLARE_PUBLIC(QxtHeaderView);
00031 
00032     QxtHeaderViewPrivate();
00033 
00034     bool proportional;
00035     QMap<int, int> factors;
00036 };
00037 
00038 QxtHeaderViewPrivate::QxtHeaderViewPrivate() : proportional(false)
00039 {
00040 }
00041 
00052 QxtHeaderView::QxtHeaderView(Qt::Orientation orientation, QWidget* parent)
00053         : QHeaderView(orientation, parent)
00054 {
00055     QXT_INIT_PRIVATE(QxtHeaderView);
00056 }
00057 
00068 bool QxtHeaderView::hasProportionalSectionSizes() const
00069 {
00070     return qxt_d().proportional;
00071 }
00072 
00073 void QxtHeaderView::setProportionalSectionSizes(bool enabled)
00074 {
00075     if (qxt_d().proportional != enabled)
00076     {
00077         qxt_d().proportional = enabled;
00078         if (enabled)
00079             setResizeMode(QHeaderView::Fixed);
00080     }
00081 }
00082 
00088 int QxtHeaderView::sectionStretchFactor(int logicalIndex) const
00089 {
00090     return qxt_d().factors.value(logicalIndex);
00091 }
00092 
00098 void QxtHeaderView::setSectionStretchFactor(int logicalIndex, int factor)
00099 {
00100     qxt_d().factors.insert(logicalIndex, factor);
00101 }
00102 
00106 void QxtHeaderView::resizeEvent(QResizeEvent* event)
00107 {
00108     QHeaderView::resizeEvent(event);
00109     if (qxt_d().proportional)
00110     {
00111         int total = 0;
00112         for (int i = 0; i < count(); ++i)
00113             total += qxt_d().factors.value(i, 1);
00114 
00115         int totalSize = 0;
00116         for (int i = 0; i < count() - 1; ++i)
00117         {
00118             qreal factor = qxt_d().factors.value(i, 1) / static_cast<qreal>(total);
00119             int sectionSize = factor * (orientation() == Qt::Horizontal ? width() : height());
00120             sectionSize = qMax(minimumSectionSize(), sectionSize);
00121             resizeSection(i, sectionSize);
00122             totalSize += sectionSize;
00123         }
00124         // avoid rounding errors, give rest to the last section
00125         resizeSection(count() - 1, width() - totalSize);
00126     }
00127 }