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 #include <kicon.h>
  25 #include <kiconloader.h>
  26
  27 #include <QAbstractItemModel>
  28 #include <QAbstractProxyModel>
  29 #include <QFontMetrics>
  30 #include <QPalette>
  31 #include <QPainter>
  32 #include <QStyleOptionViewItemV4>
  33
  34 DolphinFileItemDelegate::DolphinFileItemDelegate(QObject* parent) :
  35     KFileItemDelegate(parent),
  36     m_hasMinimizedNameColumn(false)
  37 {
  38 }
  39
  40 DolphinFileItemDelegate::~DolphinFileItemDelegate()
  41 {
  42 }
  43
  44 void DolphinFileItemDelegate::paint(QPainter* painter,
  45                                     const QStyleOptionViewItem& option,
  46                                     const QModelIndex& index) const
  47 {
  48     const QAbstractProxyModel* proxyModel = static_cast<const QAbstractProxyModel*>(index.model());
  49     const DolphinModel* dolphinModel = static_cast<const DolphinModel*>(proxyModel->sourceModel());
  50     const bool isNameColumn = (index.column() == KDirModel::Name);
  51
  52     if (m_hasMinimizedNameColumn && isNameColumn) {
  53         QStyleOptionViewItemV4 opt(option);
  54         adjustOptionWidth(opt, proxyModel, dolphinModel, index);
  55         KFileItemDelegate::paint(painter, opt, index);
  56     } else {
  57         KFileItemDelegate::paint(painter, option, index);
  58     }
  59
  60     if (dolphinModel->hasRevisionData() && isNameColumn) {
  61         // The currently shown items are under revision control. Show the current revision
  62         // state by adding an emblem.
  63         const QModelIndex dirIndex = proxyModel->mapToSource(index);
  64         const QModelIndex revisionIndex = dolphinModel->index(dirIndex.row(), DolphinModel::Revision);
  65         const QVariant data = dolphinModel->data(revisionIndex, Qt::DecorationRole);
  66         const RevisionControlPlugin::RevisionState state = static_cast<RevisionControlPlugin::RevisionState>(data.toInt());
  67
  68         if (state != RevisionControlPlugin::LocalRevision) {
  69             // TODO: extend KFileItemDelegate to be able to get the icon boundaries
  70             const QRect iconRect(option.rect.x(), option.rect.y(),
  71                                  KIconLoader::SizeSmall, KIconLoader::SizeSmall);
  72             const QPixmap emblem = emblemForState(state, iconRect.size());
  73             painter->drawPixmap(iconRect.x(), iconRect.y(), emblem);
  74         }
  75     }
  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
 108 QPixmap DolphinFileItemDelegate::emblemForState(RevisionControlPlugin::RevisionState state, const QSize& size)
 109 {
 110     // TODO #1: all icons that are use here will be replaced by revision control emblems provided by the
 111     // Oxygen team before KDE 4.4
 112     // TODO #2: cache the icons
 113     switch (state) {
 114     case RevisionControlPlugin::LatestRevision:
 115         return KIcon("dialog-ok-apply").pixmap(size);
 116     case RevisionControlPlugin::ConflictingRevision:
 117         return KIcon("application-exit").pixmap(size);
 118     case RevisionControlPlugin::UpdateRequiredRevision:
 119         return KIcon("rating").pixmap(size);
 120     case RevisionControlPlugin::EditingRevision:
 121         return KIcon("emblem-important").pixmap(size);
 122     default:
 123         break;
 124     }
 125     return QPixmap();
 126 }
 127