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/*
* SPDX-FileCopyrightText: 2011 Peter Penz <[email protected]>
*
* Based on the Itemviews NG project from Trolltech Labs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "kstandarditemlistgroupheader.h"
#include <KRatingPainter>
#include <QPainter>
KStandardItemListGroupHeader::KStandardItemListGroupHeader(QGraphicsWidget *parent)
: KItemListGroupHeader(parent)
, m_dirtyCache(true)
, m_text()
, m_pixmap()
{
}
KStandardItemListGroupHeader::~KStandardItemListGroupHeader()
{
}
void KStandardItemListGroupHeader::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
{
if (m_dirtyCache) {
updateCache();
}
KItemListGroupHeader::paint(painter, option, widget);
}
void KStandardItemListGroupHeader::paintRole(QPainter *painter, const QRectF &roleBounds, const QColor &color)
{
if (m_pixmap.isNull()) {
painter->setPen(color);
painter->drawText(roleBounds, 0, m_text);
} else {
painter->drawPixmap(roleBounds.topLeft(), m_pixmap);
}
}
void KStandardItemListGroupHeader::paintSeparator(QPainter *painter, const QColor &color)
{
if (itemIndex() == 0) {
// No top- or left-line should be drawn for the first group-header
return;
}
painter->setPen(color);
if (scrollOrientation() == Qt::Horizontal) {
const qreal x = layoutDirection() == Qt::RightToLeft ? size().width() - 1 : 0;
painter->drawLine(x, 0, x, size().height() - 1);
} else {
if (layoutDirection() == Qt::LeftToRight) {
painter->drawLine(0, 0, size().width() - 1, 0);
} else {
painter->drawLine(1, 0, size().width(), 0);
}
}
}
void KStandardItemListGroupHeader::roleChanged(const QByteArray ¤t, const QByteArray &previous)
{
Q_UNUSED(current)
Q_UNUSED(previous)
m_dirtyCache = true;
}
void KStandardItemListGroupHeader::dataChanged(const QVariant ¤t, const QVariant &previous)
{
Q_UNUSED(current)
Q_UNUSED(previous)
m_dirtyCache = true;
}
void KStandardItemListGroupHeader::resizeEvent(QGraphicsSceneResizeEvent *event)
{
KItemListGroupHeader::resizeEvent(event);
m_dirtyCache = true;
}
void KStandardItemListGroupHeader::updateCache()
{
Q_ASSERT(m_dirtyCache);
m_dirtyCache = false;
const qreal maxWidth = size().width() - 4 * styleOption().padding;
if (role() == "rating") {
m_text = QString();
const qreal height = styleOption().fontMetrics.ascent();
const QSizeF pixmapSize(qMin(height * 5, maxWidth), height);
m_pixmap = QPixmap(pixmapSize.toSize());
m_pixmap.fill(Qt::transparent);
QPainter painter(&m_pixmap);
const QRect rect(0, 0, m_pixmap.width(), m_pixmap.height());
const int rating = data().toInt();
KRatingPainter::paintRating(&painter, rect, Qt::AlignJustify | Qt::AlignVCenter, rating);
} else {
m_pixmap = QPixmap();
QFontMetricsF fontMetrics(font());
const QString text = fontMetrics.elidedText(data().toString(), Qt::ElideRight, maxWidth);
m_text = text;
}
}
#include "moc_kstandarditemlistgroupheader.cpp"
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