BookDelegate Class Reference

#include <bookdelegate.h>

Inheritance diagram for BookDelegate:

[legend]Collaboration diagram for BookDelegate:

[legend]List of all members.

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Detailed Description

Definition at line 34 of file bookdelegate.h.

Public Member Functions
	BookDelegate (QObject *parent)
void	paint (QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
QSize	sizeHint (const QStyleOptionViewItem &option, const QModelIndex &index) const
bool	editorEvent (QEvent *event, QAbstractItemModel *model, const QStyleOptionViewItem &option, const QModelIndex &index)
QWidget *	createEditor (QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index) const
Private Attributes
QPixmap	star

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Constructor & Destructor Documentation

BookDelegate::BookDelegate

(

QObject *

parent

)

Definition at line 28 of file bookdelegate.cpp.

    : QSqlRelationalDelegate(parent), star(QPixmap(":images/star.png"))
{
}

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Member Function Documentation

void BookDelegate::paint	(	QPainter *	painter,
		const QStyleOptionViewItem &	option,
		const QModelIndex &	index
	)			const

Definition at line 33 of file bookdelegate.cpp.

References QRect::adjust(), QRect::adjusted(), QRect::bottomLeft(), QRect::bottomRight(), QPalette::color(), QAbstractItemModel::data(), QPalette::Disabled, Qt::DisplayRole, QPainter::drawLine(), QPainter::drawPixmap(), QPainter::fillRect(), QPixmap::height(), height, QRect::height(), QPalette::Highlight, i, index, QPalette::Mid, QPalette::Normal, QStyleOption::palette, QPainter::pen(), QStyleOption::rect, QPainter::setPen(), star, QStyleOption::state, QStyle::State_Enabled, QStyle::State_Selected, QVariant::toInt(), QRect::topRight(), QPixmap::width(), width, QRect::x(), x, QRect::y(), and y.

{
    if (index.column() != 5) {
        QStyleOptionViewItem 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
                                  ? QPalette::Normal : 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);
}

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QSize BookDelegate::sizeHint	(	const QStyleOptionViewItem &	option,
		const QModelIndex &	index
	)			const

Definition at line 66 of file bookdelegate.cpp.

References QPixmap::height(), index, star, and QPixmap::width().

{
    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
}

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bool BookDelegate::editorEvent	(	QEvent *	event,
		QAbstractItemModel *	model,
		const QStyleOptionViewItem &	option,
		const QModelIndex &	index
	)

Definition at line 75 of file bookdelegate.cpp.

References index, QEvent::MouseButtonPress, QTest::mouseEvent(), QStyleOption::rect, QAbstractItemModel::setData(), star, QPixmap::width(), and QRect::x().

{
    if (index.column() != 5)
        return QSqlRelationalDelegate::editorEvent(event, model, option, index);

    QMouseEvent *mouseEvent;
    int stars;

    switch (event->type()) {
        case QEvent::MouseButtonPress:
            mouseEvent = static_cast<QMouseEvent*>(event);
            stars = qBound(0, int(0.7 + qreal(mouseEvent->pos().x()
                              - option.rect.x()) / star.width()), 5);
            model->setData(index, QVariant(stars));
            break;
        default:
            break;
    }

    return true;
}

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QWidget * BookDelegate::createEditor	(	QWidget *	parent,
		const QStyleOptionViewItem &	option,
		const QModelIndex &	index
	)			const

Definition at line 99 of file bookdelegate.cpp.

References index, QAbstractSpinBox::setFrame(), QSpinBox::setMaximum(), and QSpinBox::setMinimum().

{
    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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Member Data Documentation

QPixmap BookDelegate::star [private]

Definition at line 52 of file bookdelegate.h.

Referenced by editorEvent(), paint(), and sizeHint().

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The documentation for this class was generated from the following files:

• demos/books/bookdelegate.h
• demos/books/bookdelegate.cpp

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