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(roleColor());
  45     painter->setFont(m_font);
  46     painter->drawStaticText(roleBounds().topLeft(), m_text);
  47 }
  48
  49 void KFileItemListGroupHeader::dataChanged(const QVariant& current, const QVariant& previous)
  50 {
  51     Q_UNUSED(current);
  52     Q_UNUSED(previous);
  53     updateText();
  54 }
  55
  56 void KFileItemListGroupHeader::resizeEvent(QGraphicsSceneResizeEvent* event)
  57 {
  58     QGraphicsWidget::resizeEvent(event);
  59     updateText();
  60 }
  61
  62 void KFileItemListGroupHeader::updateText()
  63 {
  64     const qreal width = size().width() - 4 * styleOption().padding;
  65     m_font = font(); // TODO: Most probably the font size will be slightly shrinked in future
  66
  67     QFontMetricsF fontMetrics(m_font);
  68     const QString text = fontMetrics.elidedText(data().toString(), Qt::ElideRight, width);
  69     m_text.setText(text);
  70 }
  71
  72 #include "kfileitemlistgroupheader.moc"