mirror of
https://github.com/RetroShare/RetroShare.git
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112 lines
3.8 KiB
C++
112 lines
3.8 KiB
C++
/****************************************************************
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* RetroShare is distributed under the following license:
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*
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* Copyright (C) 2010 Cyril Soler
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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****************************************************************/
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/** Use this class for displaying dates and sizes in a readable format, while allowing to read the
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* real size in the column.
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*
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* To use:
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*
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* - in the QABstractItemView constructor, do a
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*
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* myView->setItemDelegateForColumn(SR_SIZE_COL,new RSHumanReadableSizeDelegate()) ;
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*
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* - each field must be filled with a string that allows a proper sorting based on lexicographic
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* order. For Sizes, use this:
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*
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* myView->setText(SR_SIZE_COL, QString("%1").arg(dir.count,(int)15,(int)10));
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*
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* Note: there's no .cpp file, because the code here is really simple.
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*/
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#include <QItemDelegate>
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#include <QPainter>
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#include <util/misc.h>
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class RSHumanReadableDelegate: public QAbstractItemDelegate
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{
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public:
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virtual QSize sizeHint(const QStyleOptionViewItem&, const QModelIndex&) const
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{
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return QSize(50,17) ;
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}
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virtual void paint(QPainter *painter,const QStyleOptionViewItem & option, const QModelIndex & index) const = 0;
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protected:
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virtual void setPainterOptions(QPainter *painter,QStyleOptionViewItem& option,const QModelIndex& index) const
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{
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// This part of the code is copied from DLListDelegate.cpp
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//
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QPalette::ColorGroup cg = option.state & QStyle::State_Enabled ? QPalette::Normal : QPalette::Disabled;
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QVariant value = index.data(Qt::TextColorRole);
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if(value.isValid() && qvariant_cast<QColor>(value).isValid())
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option.palette.setColor(QPalette::Text, qvariant_cast<QColor>(value));
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// select pen color
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if(option.state & QStyle::State_Selected)
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painter->setPen(option.palette.color(cg, QPalette::HighlightedText));
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else
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painter->setPen(option.palette.color(cg, QPalette::Text));
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// draw the background color
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if(option.showDecorationSelected && (option.state & QStyle::State_Selected))
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{
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if(cg == QPalette::Normal && !(option.state & QStyle::State_Active))
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cg = QPalette::Inactive;
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painter->fillRect(option.rect, option.palette.brush(cg, QPalette::Highlight));
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}
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else
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{
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value = index.data(Qt::BackgroundColorRole);
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if(value.isValid() && qvariant_cast<QColor>(value).isValid())
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painter->fillRect(option.rect, qvariant_cast<QColor>(value));
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}
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}
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};
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class RSHumanReadableAgeDelegate: public RSHumanReadableDelegate
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{
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public:
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virtual void paint(QPainter *painter,const QStyleOptionViewItem & option, const QModelIndex & index) const
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{
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QStyleOptionViewItem opt(option) ;
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setPainterOptions(painter,opt,index) ;
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painter->drawText(opt.rect, Qt::AlignCenter, misc::timeRelativeToNow(index.data().toLongLong())) ;
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}
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};
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class RSHumanReadableSizeDelegate: public RSHumanReadableDelegate
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{
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public:
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virtual void paint(QPainter *painter,const QStyleOptionViewItem & option, const QModelIndex & index) const
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{
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QStyleOptionViewItem opt(option) ;
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setPainterOptions(painter,opt,index) ;
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painter->drawText(opt.rect, Qt::AlignRight, misc::friendlyUnit(index.data().toULongLong()));
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}
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};
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