Qt:Документация 4.3.2/itemviews-stardelegate-stardelegate-cpp
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[править] stardelegate.cpp Example File
itemviews/stardelegate/stardelegate.cpp
/**************************************************************************** ** ** Copyright (C) 2007-2007 Trolltech ASA. All rights reserved. ** ** This file is part of the example classes of the Qt Toolkit. ** ** This file may be used under the terms of the GNU General Public ** License version 2.0 as published by the Free Software Foundation ** and appearing in the file LICENSE.GPL included in the packaging of ** this file. Please review the following information to ensure GNU ** General Public Licensing requirements will be met: ** http://trolltech.com/products/qt/licenses/licensing/opensource/ ** ** If you are unsure which license is appropriate for your use, please ** review the following information: ** http://trolltech.com/products/qt/licenses/licensing/licensingoverview ** or contact the sales department at sales@trolltech.com. ** ** In addition, as a special exception, Trolltech gives you certain ** additional rights. These rights are described in the Trolltech GPL ** Exception version 1.0, which can be found at ** http://www.trolltech.com/products/qt/gplexception/ and in the file ** GPL_EXCEPTION.txt in this package. ** ** In addition, as a special exception, Trolltech, as the sole copyright ** holder for Qt Designer, grants users of the Qt/Eclipse Integration ** plug-in the right for the Qt/Eclipse Integration to link to ** functionality provided by Qt Designer and its related libraries. ** ** Trolltech reserves all rights not expressly granted herein. ** ** Trolltech ASA (c) 2007 ** ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. ** ****************************************************************************/ #include <QtGui> #include "stardelegate.h" #include "stareditor.h" #include "starrating.h" void StarDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const { if (qVariantCanConvert<StarRating>(index.data())) { StarRating starRating = qVariantValue<StarRating>(index.data()); if (option.state & QStyle::State_Selected) painter->fillRect(option.rect, option.palette.highlight()); starRating.paint(painter, option.rect, option.palette, StarRating::ReadOnly); } else { QItemDelegate::paint(painter, option, index); } } QSize StarDelegate::sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const { if (qVariantCanConvert<StarRating>(index.data())) { StarRating starRating = qVariantValue<StarRating>(index.data()); return starRating.sizeHint(); } else { return QItemDelegate::sizeHint(option, index); } } QWidget *StarDelegate::createEditor(QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index) const { if (qVariantCanConvert<StarRating>(index.data())) { StarEditor *editor = new StarEditor(parent); connect(editor, SIGNAL(editingFinished()), this, SLOT(commitAndCloseEditor())); return editor; } else { return QItemDelegate::createEditor(parent, option, index); } } void StarDelegate::setEditorData(QWidget *editor, const QModelIndex &index) const { if (qVariantCanConvert<StarRating>(index.data())) { StarRating starRating = qVariantValue<StarRating>(index.data()); StarEditor *starEditor = qobject_cast<StarEditor *>(editor); starEditor->setStarRating(starRating); } else { QItemDelegate::setEditorData(editor, index); } } void StarDelegate::setModelData(QWidget *editor, QAbstractItemModel *model, const QModelIndex &index) const { if (qVariantCanConvert<StarRating>(index.data())) { StarEditor *starEditor = qobject_cast<StarEditor *>(editor); model->setData(index, qVariantFromValue(starEditor->starRating())); } else { QItemDelegate::setModelData(editor, model, index); } } void StarDelegate::commitAndCloseEditor() { StarEditor *editor = qobject_cast<StarEditor *>(sender()); emit commitData(editor); emit closeEditor(editor); }
Copyright © 2007 Trolltech | Trademarks | Qt 4.3.2
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