/****************************************************************************+
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**+
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** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).+
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** All rights reserved.+
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** Contact: Nokia Corporation (qt-info@nokia.com)+
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**+
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** This file is part of the demonstration applications of the Qt Toolkit.+
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**+
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** $QT_BEGIN_LICENSE:LGPL$+
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** No Commercial Usage+
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** This file contains pre-release code and may not be distributed.+
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** You may use this file in accordance with the terms and conditions+
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** contained in the Technology Preview License Agreement accompanying+
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** this package.+
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**+
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** GNU Lesser General Public License Usage+
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** Alternatively, this file may be used under the terms of the GNU Lesser+
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** General Public License version 2.1 as published by the Free Software+
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** Foundation and appearing in the file LICENSE.LGPL included in the+
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** packaging of this file.  Please review the following information to+
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** ensure the GNU Lesser General Public License version 2.1 requirements+
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.+
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**+
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** In addition, as a special exception, Nokia gives you certain additional+
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** rights.  These rights are described in the Nokia Qt LGPL Exception+
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.+
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**+
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** If you have questions regarding the use of this file, please contact+
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** Nokia at qt-info@nokia.com.+
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**+
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**+
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**+
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**+
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** $QT_END_LICENSE$+
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**+
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****************************************************************************/+
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+
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#include "bookdelegate.h"+
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+
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#include <QtGui>+
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+
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BookDelegate::BookDelegate(QObject *parent)+
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    : QSqlRelationalDelegate(parent), star(QPixmap(":images/star.png"))+
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{+
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}+
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+
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void BookDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option,+
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                           const QModelIndex &index) const+
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{+
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    if (index.column() != 5) {+
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        QStyleOptionViewItemV3 opt = option;+
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        opt.rect.adjust(0, 0, -1, -1); // since we draw the grid ourselves+
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        QSqlRelationalDelegate::paint(painter, opt, index);+
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    } else {+
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        const QAbstractItemModel *model = index.model();+
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        QPalette::ColorGroup cg = (option.state & QStyle::State_Enabled) ?+
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            (option.state & QStyle::State_Active) ? QPalette::Normal : QPalette::Inactive : QPalette::Disabled;+
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+
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        if (option.state & QStyle::State_Selected)+
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            painter->fillRect(option.rect, option.palette.color(cg, QPalette::Highlight));+
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+
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        int rating = model->data(index, Qt::DisplayRole).toInt();+
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        int width = star.width();+
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        int height = star.height();+
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        int x = option.rect.x();+
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        int y = option.rect.y() + (option.rect.height() / 2) - (height / 2);+
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        for (int i = 0; i < rating; ++i) {+
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            painter->drawPixmap(x, y, star);+
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            x += width;+
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        }+
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        drawFocus(painter, option, option.rect.adjusted(0, 0, -1, -1)); // since we draw the grid ourselves+
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    }+
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+
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    QPen pen = painter->pen();+
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    painter->setPen(option.palette.color(QPalette::Mid));+
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    painter->drawLine(option.rect.bottomLeft(), option.rect.bottomRight());+
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    painter->drawLine(option.rect.topRight(), option.rect.bottomRight());+
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    painter->setPen(pen);+
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}+
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+
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QSize BookDelegate::sizeHint(const QStyleOptionViewItem &option,+
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                                 const QModelIndex &index) const+
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{+
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    if (index.column() == 5)+
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        return QSize(5 * star.width(), star.height()) + QSize(1, 1);+
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+
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    return QSqlRelationalDelegate::sizeHint(option, index) + QSize(1, 1); // since we draw the grid ourselves+
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}+
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+
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bool BookDelegate::editorEvent(QEvent *event, QAbstractItemModel *model,+
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                               const QStyleOptionViewItem &option,+
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                               const QModelIndex &index)+
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{+
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    if (index.column() != 5)+
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        return QSqlRelationalDelegate::editorEvent(event, model, option, index);+
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+
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    if (event->type() == QEvent::MouseButtonPress) {+
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        QMouseEvent *mouseEvent = static_cast<QMouseEvent*>(event);+
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        int stars = qBound(0, int(0.7 + qreal(mouseEvent->pos().x()+
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            - option.rect.x()) / star.width()), 5);+
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        model->setData(index, QVariant(stars));+
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        return false; //so that the selection can change+
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    }+
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+
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    return true;+
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}+
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+
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QWidget *BookDelegate::createEditor(QWidget *parent, const QStyleOptionViewItem &option,+
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                                    const QModelIndex &index) const+
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{+
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    if (index.column() != 4)+
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        return QSqlRelationalDelegate::createEditor(parent, option, index);+
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+
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    // for editing the year, return a spinbox with a range from -1000 to 2100.+
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    QSpinBox *sb = new QSpinBox(parent);+
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    sb->setFrame(false);+
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    sb->setMaximum(2100);+
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    sb->setMinimum(-1000);+
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+
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    return sb;+
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}+
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+
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