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 <dolphinmodel.h>
  23 #include <kfileitem.h>
  24
  25 #include <QAbstractItemModel>
  26 #include <QAbstractProxyModel>
  27 #include <QFontMetrics>
  28 #include <QPalette>
  29 #include <QPainter>
  30 #include <QStyleOptionViewItemV4>
  31
  32 DolphinFileItemDelegate::DolphinFileItemDelegate(QObject* parent) :
  33     KFileItemDelegate(parent),
  34     m_hasMinimizedNameColumn(false)
  35 {
  36 }
  37
  38 DolphinFileItemDelegate::~DolphinFileItemDelegate()
  39 {
  40 }
  41
  42 void DolphinFileItemDelegate::paint(QPainter* painter,
  43                                     const QStyleOptionViewItem& option,
  44                                     const QModelIndex& index) const
  45 {
  46     const QAbstractProxyModel* proxyModel = static_cast<const QAbstractProxyModel*>(index.model());
  47     const DolphinModel* dolphinModel = static_cast<const DolphinModel*>(proxyModel->sourceModel());
  48     const bool useMinimizedNameColumn = m_hasMinimizedNameColumn && (index.column() == KDirModel::Name);
  49
  50     if (dolphinModel->hasRevisionData()) {
  51         // The currently shown items are under revision control. Show the current revision
  52         // state by adjusting the text color.
  53         const QModelIndex dirIndex = proxyModel->mapToSource(index);
  54         const QModelIndex revisionIndex = dolphinModel->index(dirIndex.row(), DolphinModel::Revision);
  55         const QVariant data = dolphinModel->data(revisionIndex, Qt::DecorationRole);
  56         const DolphinModel::RevisionState state = static_cast<DolphinModel::RevisionState>(data.toInt());
  57
  58         if (state != DolphinModel::LocalRevision) {
  59             QStyleOptionViewItemV4 opt(option);
  60             // TODO: use different colors for different states
  61             opt.palette.setColor(QPalette::Text, QColor(40, 150, 40));
  62             if (useMinimizedNameColumn) {
  63                 adjustOptionWidth(opt, proxyModel, dolphinModel, index);
  64             }
  65             KFileItemDelegate::paint(painter, opt, index);
  66             return;
  67         }
  68     } else if (useMinimizedNameColumn) {
  69         QStyleOptionViewItemV4 opt(option);
  70         adjustOptionWidth(opt, proxyModel, dolphinModel, index);
  71         KFileItemDelegate::paint(painter, opt, index);
  72         return;
  73     }
  74
  75     KFileItemDelegate::paint(painter, option, index);
  76 }
  77
  78 int DolphinFileItemDelegate::nameColumnWidth(const QString& name, const QStyleOptionViewItem& option)
  79 {
  80     QFontMetrics fontMetrics(option.font);
  81     int width = option.decorationSize.width() + fontMetrics.width(name) + 16;
  82
  83     const int defaultWidth = option.rect.width();
  84     if ((defaultWidth > 0) && (defaultWidth < width)) {
  85         width = defaultWidth;
  86     }
  87     return width;
  88 }
  89
  90 void DolphinFileItemDelegate::adjustOptionWidth(QStyleOptionViewItemV4& option,
  91                                                 const QAbstractProxyModel* proxyModel,
  92                                                 const DolphinModel* dolphinModel,
  93                                                 const QModelIndex& index)
  94 {
  95     const QModelIndex dirIndex = proxyModel->mapToSource(index);
  96     const KFileItem item = dolphinModel->itemForIndex(dirIndex);
  97     if (!item.isNull()) {
  98         // symbolic links are displayed in an italic font
  99         if (item.isLink()) {
 100             option.font.setItalic(true);
 101         }
 102
 103         const int width = nameColumnWidth(item.text(), option);
 104         option.rect.setWidth(width);
 105     }
 106 }
 107