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Code Issues Releases Wiki Activity

* Added OverlayButton.

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This commit is contained in:
Christian Muehlhaeuser 2011-10-19 02:16:16 +02:00
parent 1223d3dac3
commit 8532189b54
2 changed files with 223 additions and 0 deletions
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162
src/libtomahawk/widgets/OverlayButton.cpp Normal file
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/* === This file is part of Tomahawk Player - <http://tomahawk-player.org> ===
*
* Copyright 2010-2011, Christian Muehlhaeuser <muesli@tomahawk-player.org>
*
* Tomahawk 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 3 of the License, or
* (at your option) any later version.
*
* Tomahawk 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 Tomahawk. If not, see <http://www.gnu.org/licenses/>.
*/
#include "OverlayButton.h"
#include <QPainter>
#include <QPropertyAnimation>
#include "utils/logger.h"
#define CORNER_ROUNDNESS 8.0
#define FADING_DURATION 500
#define FONT_SIZE 16
#define OPACITY 0.70
OverlayButton::OverlayButton( QWidget* parent )
: QPushButton( parent ) // this is on purpose!
, m_opacity( 0.0 )
, m_parent( parent )
{
resize( 160, 26 );
setAttribute( Qt::WA_TranslucentBackground, true );
setOpacity( m_opacity );
m_timer.setSingleShot( true );
connect( &m_timer, SIGNAL( timeout() ), this, SLOT( hide() ) );
#ifdef Q_WS_MAC
QFont f( font() );
f.setPointSize( f.pointSize() - 2 );
setFont( f );
#endif
}
OverlayButton::~OverlayButton()
{
}
void
OverlayButton::setOpacity( qreal opacity )
{
m_opacity = opacity;
if ( m_opacity == 0.00 && !isHidden() )
{
QPushButton::hide();
}
else if ( m_opacity > 0.00 && isHidden() )
{
QPushButton::show();
}
repaint();
}
void
OverlayButton::setText( const QString& text )
{
m_text = text;
}
void
OverlayButton::show( int timeoutSecs )
{
QPropertyAnimation* animation = new QPropertyAnimation( this, "opacity" );
animation->setDuration( FADING_DURATION );
animation->setEndValue( 1.0 );
animation->start();
if( timeoutSecs > 0 )
m_timer.start( timeoutSecs * 1000 );
}
void
OverlayButton::hide()
{
QPropertyAnimation* animation = new QPropertyAnimation( this, "opacity" );
animation->setDuration( FADING_DURATION );
animation->setEndValue( 0.00 );
animation->start();
}
bool
OverlayButton::shown() const
{
if ( !isEnabled() )
return false;
return m_opacity == OPACITY;
}
void
OverlayButton::paintEvent( QPaintEvent* event )
{
Q_UNUSED( event );
QPoint corner( m_parent->contentsRect().width() - width() - 12, m_parent->height() - height() - 12 );
move( corner );
QPainter p( this );
QRect r = contentsRect();
p.setBackgroundMode( Qt::TransparentMode );
p.setRenderHint( QPainter::Antialiasing );
p.setOpacity( m_opacity );
QPen pen( palette().dark().color(), .5 );
p.setPen( pen );
p.setBrush( QColor( 30, 30, 30, 255.0 * OPACITY ) );
p.drawRoundedRect( r, CORNER_ROUNDNESS, CORNER_ROUNDNESS );
QTextOption to( Qt::AlignCenter );
to.setWrapMode( QTextOption::WrapAtWordBoundaryOrAnywhere );
// shrink to fit if needed
QFont f( font() );
f.setPointSize( FONT_SIZE );
f.setBold( true );
QRectF textRect = r.adjusted( 8, 8, -8, -8 );
qreal availHeight = textRect.height();
QFontMetricsF fm( f );
qreal textHeight = fm.boundingRect( textRect, Qt::AlignCenter | Qt::TextWordWrap, text() ).height();
while ( textHeight > availHeight )
{
if ( f.pointSize() <= 4 ) // don't try harder
break;
f.setPointSize( f.pointSize() - 1 );
fm = QFontMetricsF( f );
textHeight = fm.boundingRect( textRect, Qt::AlignCenter | Qt::TextWordWrap, text() ).height();
}
p.setFont( f );
p.setPen( Qt::white );
p.drawText( r.adjusted( 8, 8, -8, -8 ), text(), to );
}

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src/libtomahawk/widgets/OverlayButton.h Normal file
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/* === This file is part of Tomahawk Player - <http://tomahawk-player.org> ===
*
* Copyright 2010-2011, Christian Muehlhaeuser <muesli@tomahawk-player.org>
*
* Tomahawk 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 3 of the License, or
* (at your option) any later version.
*
* Tomahawk 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 Tomahawk. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef OVERLAYBUTTON_H
#define OVERLAYBUTTON_H
#include <QPushButton>
#include <QAbstractItemView>
#include <QTimer>
#include "dllmacro.h"
class DLLEXPORT OverlayButton : public QPushButton
{
Q_OBJECT
Q_PROPERTY( qreal opacity READ opacity WRITE setOpacity )
public:
OverlayButton( QWidget* parent );
~OverlayButton();
qreal opacity() const { return m_opacity; }
void setOpacity( qreal opacity );
QString text() const { return m_text; }
void setText( const QString& text );
bool shown() const;
public slots:
void show( int timeoutSecs = 0 );
void hide();
protected:
// void changeEvent( QEvent* e );
void paintEvent( QPaintEvent* event );
private:
QString m_text;
qreal m_opacity;
QWidget* m_parent;
QTimer m_timer;
};
#endif // OVERLAYBUTTON_H