src/kitemviews/kfileitemlistgroupheader.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2011 by Peter Penz <peter.penz19@gmail.com>             *
   3  *                                                                         *
   4  *   Based on the Itemviews NG project from Trolltech Labs:                *
   5  *   http://qt.gitorious.org/qt-labs/itemviews-ng                          *
   6  *                                                                         *
   7  *   This program is free software; you can redistribute it and/or modify  *
   8  *   it under the terms of the GNU General Public License as published by  *
   9  *   the Free Software Foundation; either version 2 of the License, or     *
  10  *   (at your option) any later version.                                   *
  11  *                                                                         *
  12  *   This program is distributed in the hope that it will be useful,       *
  13  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  14  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  15  *   GNU General Public License for more details.                          *
  16  *                                                                         *
  17  *   You should have received a copy of the GNU General Public License     *
  18  *   along with this program; if not, write to the                         *
  19  *   Free Software Foundation, Inc.,                                       *
  20  *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *
  21  ***************************************************************************/
  22
  23 #include "kfileitemlistgroupheader.h"
  24
  25 #include <QPainter>
  26
  27 KFileItemListGroupHeader::KFileItemListGroupHeader(QGraphicsWidget* parent) :
  28     KItemListGroupHeader(parent),
  29     m_font(),
  30     m_text()
  31 {
  32     m_text.setTextFormat(Qt::PlainText);
  33     m_text.setPerformanceHint(QStaticText::AggressiveCaching);
  34 }
  35
  36 KFileItemListGroupHeader::~KFileItemListGroupHeader()
  37 {
  38 }
  39
  40 void KFileItemListGroupHeader::paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget)
  41 {
  42     KItemListGroupHeader::paint(painter, option, widget);
  43
  44     painter->setPen(styleOption().palette.text().color());
  45     painter->setFont(m_font);
  46     const int margin = styleOption().margin;
  47     painter->drawStaticText(margin * 2, margin, m_text);
  48 }
  49
  50 void KFileItemListGroupHeader::dataChanged(const QVariant& current, const QVariant& previous)
  51 {
  52     Q_UNUSED(current);
  53     Q_UNUSED(previous);
  54     updateText();
  55 }
  56
  57 void KFileItemListGroupHeader::resizeEvent(QGraphicsSceneResizeEvent* event)
  58 {
  59     QGraphicsWidget::resizeEvent(event);
  60     updateText();
  61 }
  62
  63 void KFileItemListGroupHeader::updateText()
  64 {
  65     const qreal width = size().width() - 4 * styleOption().margin;
  66     m_font = font();
  67     m_font.setBold(true);
  68
  69     QFontMetricsF fontMetrics(m_font);
  70     const QString text = fontMetrics.elidedText(data().toString(), Qt::ElideRight, width);
  71     m_text.setText(text);
  72 }
  73
  74 #include "kfileitemlistgroupheader.moc"