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/***************************************************************************
* Copyright (C) 2011 by Peter Penz <[email protected]> *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *
***************************************************************************/
#include "kitemlistselectiontoggle.h"
#include <KIconLoader>
#include <QPainter>
KItemListSelectionToggle::KItemListSelectionToggle(QGraphicsItem* parent) :
QGraphicsWidget(parent, 0),
m_checked(false),
m_hovered(false)
{
}
KItemListSelectionToggle::~KItemListSelectionToggle()
{
}
void KItemListSelectionToggle::setChecked(bool checked)
{
if (m_checked != checked) {
m_checked = checked;
m_pixmap = QPixmap();
update();
}
}
bool KItemListSelectionToggle::isChecked() const
{
return m_checked;
}
void KItemListSelectionToggle::setHovered(bool hovered)
{
if (m_hovered != hovered) {
m_hovered = hovered;
m_pixmap = QPixmap();
update();
}
}
void KItemListSelectionToggle::paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget)
{
Q_UNUSED(option);
Q_UNUSED(widget);
if (m_pixmap.isNull()) {
updatePixmap();
}
const qreal x = (size().width() - qreal(m_pixmap.width())) / 2;
const qreal y = (size().height() - qreal(m_pixmap.height())) / 2;
painter->drawPixmap(x, y, m_pixmap);
}
void KItemListSelectionToggle::resizeEvent(QGraphicsSceneResizeEvent* event)
{
QGraphicsWidget::resizeEvent(event);
if (!m_pixmap.isNull()) {
const int pixmapSize = m_pixmap.size().width(); // Pixmap width is always equal pixmap height
if (pixmapSize != iconSize()) {
// If the required icon size is different from the actual pixmap size,
// overwrite the m_pixmap with an empty pixmap and reload the new
// icon on next re-painting.
m_pixmap = QPixmap();
}
}
}
void KItemListSelectionToggle::updatePixmap()
{
const QString icon = m_checked ? "list-remove" : "list-add";
const KIconLoader::States state = m_hovered ? KIconLoader::ActiveState : KIconLoader::DisabledState;
m_pixmap = KIconLoader::global()->loadIcon(icon, KIconLoader::Desktop, iconSize(), state);
}
int KItemListSelectionToggle::iconSize() const
{
const int iconSize = qMin(size().width(), size().height());
if (iconSize < KIconLoader::SizeSmallMedium) {
return KIconLoader::SizeSmall;
} else if (iconSize < KIconLoader::SizeMedium) {
return KIconLoader::SizeSmallMedium;
} else if (iconSize < KIconLoader::SizeLarge) {
return KIconLoader::SizeMedium;
} else if (iconSize < KIconLoader::SizeHuge) {
return KIconLoader::SizeLarge;
} else if (iconSize < KIconLoader::SizeEnormous) {
return KIconLoader::SizeHuge;
}
return iconSize;
}
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