apps/dolphin/src/dolphinfileitemdelegate.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2008 by Peter Penz <peter.penz@gmx.at>                  *
   3  *                                                                         *
   4  *   This program is free software; you can redistribute it and/or modify  *
   5  *   it under the terms of the GNU General Public License as published by  *
   6  *   the Free Software Foundation; either version 2 of the License, or     *
   7  *   (at your option) any later version.                                   *
   8  *                                                                         *
   9  *   This program is distributed in the hope that it will be useful,       *
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  12  *   GNU General Public License for more details.                          *
  13  *                                                                         *
  14  *   You should have received a copy of the GNU General Public License     *
  15  *   along with this program; if not, write to the                         *
  16  *   Free Software Foundation, Inc.,                                       *
  17  *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *
  18  ***************************************************************************/
  19
  20 #include "dolphinfileitemdelegate.h"
  21
  22 #include <QAbstractItemModel>
  23 #include <QAbstractProxyModel>
  24 #include <QFontMetrics>
  25
  26 #include <kdirmodel.h>
  27 #include <kfileitem.h>
  28
  29 DolphinFileItemDelegate::DolphinFileItemDelegate(QObject* parent) :
  30     KFileItemDelegate(parent),
  31     m_hasMinimizedNameColumn(false)
  32 {
  33 }
  34
  35 DolphinFileItemDelegate::~DolphinFileItemDelegate()
  36 {
  37 }
  38
  39 void DolphinFileItemDelegate::paint(QPainter* painter,
  40                                     const QStyleOptionViewItem& option,
  41                                     const QModelIndex& index) const
  42 {
  43     if (m_hasMinimizedNameColumn && (index.column() == KDirModel::Name)) {
  44         QStyleOptionViewItemV4 opt(option);
  45
  46         const QAbstractProxyModel* proxyModel = static_cast<const QAbstractProxyModel*>(index.model());
  47         const KDirModel* dirModel = static_cast<const KDirModel*>(proxyModel->sourceModel());
  48         const QModelIndex dirIndex = proxyModel->mapToSource(index);
  49         const KFileItem item = dirModel->itemForIndex(dirIndex);
  50         if (!item.isNull()) {
  51             const int width = nameColumnWidth(item.text(), opt);
  52             opt.rect.setWidth(width);
  53         }
  54         KFileItemDelegate::paint(painter, opt, index);
  55     } else {
  56         KFileItemDelegate::paint(painter, option, index);
  57     }
  58 }
  59
  60 int DolphinFileItemDelegate::nameColumnWidth(const QString& name, const QStyleOptionViewItem& option)
  61 {
  62     QFontMetrics fontMetrics(option.font);
  63     int width = option.decorationSize.width() + fontMetrics.width(name) + 16;
  64
  65     const int defaultWidth = option.rect.width();
  66     if ((defaultWidth > 0) && (defaultWidth < width)) {
  67         width = defaultWidth;
  68     }
  69     return width;
  70 }
  71