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/*
This file is part of the Nepomuk KDE project.
Copyright (C) 2010 Sebastian Trueg <trueg@kde.org>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) version 3, or any
later version accepted by the membership of KDE e.V. (or its
successor approved by the membership of KDE e.V.), which shall
act as a proxy defined in Section 6 of version 3 of the license.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include "tagcheckbox.h"
#include "tagwidget.h"
#include "tagwidget_p.h"
#include <kcursor.h>
#include <kcolorscheme.h>
#include <kglobalsettings.h>
#include <QtGui/QMouseEvent>
#include <QtGui/QStyleOptionButton>
#include <QtGui/QHBoxLayout>
#include <QtGui/QCheckBox>
#include <QtGui/QLabel>
class Nepomuk2::TagCheckBox::CheckBoxWithPublicInitStyleOption : public QCheckBox
{
public:
CheckBoxWithPublicInitStyleOption( const QString& text, QWidget* parent )
: QCheckBox( text, parent ) {
}
void initStyleOption( QStyleOptionButton* so ) {
QCheckBox::initStyleOption( so );
}
};
Nepomuk2::TagCheckBox::TagCheckBox( const Tag& tag, TagWidgetPrivate* tagWidget, QWidget* parent )
: QWidget( parent ),
m_label(0),
m_checkBox(0),
m_tag(tag),
m_urlHover(false),
m_tagWidget(tagWidget)
{
QHBoxLayout* layout = new QHBoxLayout(this);
layout->setMargin(0);
if( tagWidget->m_flags & TagWidget::MiniMode ) {
m_label = new QLabel( tag.genericLabel(), this );
m_label->setMouseTracking(true);
m_label->setTextFormat(Qt::PlainText);
m_label->setForegroundRole(parent->foregroundRole());
m_child = m_label;
}
else {
m_checkBox = new CheckBoxWithPublicInitStyleOption( tag.genericLabel(), this );
m_child = m_checkBox;
connect(m_checkBox, SIGNAL(stateChanged(int)), this, SLOT(slotStateChanged(int)));
}
m_child->installEventFilter( this );
m_child->setMouseTracking(true);
layout->addWidget( m_child );
}
Nepomuk2::TagCheckBox::~TagCheckBox()
{
}
bool Nepomuk2::TagCheckBox::isChecked() const
{
if( m_checkBox )
return m_checkBox->isChecked();
else
return true;
}
void Nepomuk2::TagCheckBox::setChecked( bool checked )
{
if( m_checkBox )
m_checkBox->setChecked( checked );
}
void Nepomuk2::TagCheckBox::leaveEvent( QEvent* event )
{
QWidget::leaveEvent( event );
enableUrlHover( false );
}
bool Nepomuk2::TagCheckBox::eventFilter( QObject* watched, QEvent* event )
{
if( watched == m_child ) {
switch( event->type() ) {
case QEvent::MouseMove: {
QMouseEvent* me = static_cast<QMouseEvent*>(event);
if( !(m_tagWidget->m_flags & TagWidget::DisableTagClicking) )
enableUrlHover( tagRect().contains(me->pos()) );
}
case QEvent::MouseButtonRelease: {
QMouseEvent* me = static_cast<QMouseEvent*>(event);
if( !(m_tagWidget->m_flags & TagWidget::DisableTagClicking) &&
me->button() == Qt::LeftButton &&
tagRect().contains(me->pos()) ) {
emit tagClicked( m_tag );
return true;
}
}
default:
// do nothing
break;
}
}
return QWidget::eventFilter( watched, event );
}
void Nepomuk2::TagCheckBox::slotStateChanged( int state )
{
emit tagStateChanged( m_tag, state );
}
QRect Nepomuk2::TagCheckBox::tagRect() const
{
if( m_checkBox ) {
QStyleOptionButton opt;
m_checkBox->initStyleOption(&opt);
return style()->subElementRect(QStyle::SE_CheckBoxContents,
&opt,
m_checkBox);
}
else {
return QRect(QPoint(0, 0), m_label->size());
}
}
void Nepomuk2::TagCheckBox::enableUrlHover( bool enable )
{
if( m_urlHover != enable ) {
m_urlHover = enable;
QFont f = font();
if(enable)
f.setUnderline(true);
m_child->setFont(f);
m_child->setCursor( enable ? Qt::PointingHandCursor : Qt::ArrowCursor );
}
}
#include "tagcheckbox.moc"
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