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/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the demonstration applications of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "bookdelegate.h"
#include <QtWidgets>
BookDelegate::BookDelegate(QObject *parent)
: QSqlRelationalDelegate(parent), star(QPixmap(":images/star.png"))
{
}
void BookDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option,
const QModelIndex &index) const
{
if (index.column() != 5) {
QStyleOptionViewItemV3 opt = option;
opt.rect.adjust(0, 0, -1, -1); // since we draw the grid ourselves
QSqlRelationalDelegate::paint(painter, opt, index);
} else {
const QAbstractItemModel *model = index.model();
QPalette::ColorGroup cg = (option.state & QStyle::State_Enabled) ?
(option.state & QStyle::State_Active) ? QPalette::Normal : QPalette::Inactive : QPalette::Disabled;
if (option.state & QStyle::State_Selected)
painter->fillRect(option.rect, option.palette.color(cg, QPalette::Highlight));
int rating = model->data(index, Qt::DisplayRole).toInt();
int width = star.width();
int height = star.height();
int x = option.rect.x();
int y = option.rect.y() + (option.rect.height() / 2) - (height / 2);
for (int i = 0; i < rating; ++i) {
painter->drawPixmap(x, y, star);
x += width;
}
drawFocus(painter, option, option.rect.adjusted(0, 0, -1, -1)); // since we draw the grid ourselves
}
QPen pen = painter->pen();
painter->setPen(option.palette.color(QPalette::Mid));
painter->drawLine(option.rect.bottomLeft(), option.rect.bottomRight());
painter->drawLine(option.rect.topRight(), option.rect.bottomRight());
painter->setPen(pen);
}
QSize BookDelegate::sizeHint(const QStyleOptionViewItem &option,
const QModelIndex &index) const
{
if (index.column() == 5)
return QSize(5 * star.width(), star.height()) + QSize(1, 1);
return QSqlRelationalDelegate::sizeHint(option, index) + QSize(1, 1); // since we draw the grid ourselves
}
bool BookDelegate::editorEvent(QEvent *event, QAbstractItemModel *model,
const QStyleOptionViewItem &option,
const QModelIndex &index)
{
if (index.column() != 5)
return QSqlRelationalDelegate::editorEvent(event, model, option, index);
if (event->type() == QEvent::MouseButtonPress) {
QMouseEvent *mouseEvent = static_cast<QMouseEvent*>(event);
int stars = qBound(0, int(0.7 + qreal(mouseEvent->pos().x()
- option.rect.x()) / star.width()), 5);
model->setData(index, QVariant(stars));
return false; //so that the selection can change
}
return true;
}
QWidget *BookDelegate::createEditor(QWidget *parent, const QStyleOptionViewItem &option,
const QModelIndex &index) const
{
if (index.column() != 4)
return QSqlRelationalDelegate::createEditor(parent, option, index);
// for editing the year, return a spinbox with a range from -1000 to 2100.
QSpinBox *sb = new QSpinBox(parent);
sb->setFrame(false);
sb->setMaximum(2100);
sb->setMinimum(-1000);
return sb;
}
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