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/*
*
* $Id: sourceheader 380067 2005-01-19 13:03:46Z trueg $
* Copyright (C) 2005 Sebastian Trueg <trueg@k3b.org>
*
* This file is part of the K3b project.
* Copyright (C) 1998-2007 Sebastian Trueg <trueg@k3b.org>
*
* Based on the effects in popupMessage.cpp
* Copyright (C) 2005 by Max Howell <max.howell@methylblue.com>
* 2005 by Seb Ruiz <me@sebruiz.net>
*
* Dissolve Mask (c) Kicker Authors kickertip.cpp, 2005/08/17
*
* 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.
* See the file "COPYING" for the exact licensing terms.
*/
#include "k3bwidgetshoweffect.h"
#include <qpainter.h>
#include <qwidget.h>
K3bWidgetShowEffect::K3bWidgetShowEffect( QWidget* widget, Effect e )
: QObject( widget ),
m_effect( e ),
m_widget( widget ),
m_dissolveSize( 0 ),
m_dissolveDelta( -1 ),
m_offset( 0 ),
m_deleteSelf( false ),
m_bEffectOnly( false )
{
}
K3bWidgetShowEffect::~K3bWidgetShowEffect()
{
}
void K3bWidgetShowEffect::hide( bool effectOnly )
{
m_bEffectOnly = effectOnly;
m_bShow = false;
m_offset = m_widget->height();
killTimer( m_timerId );
m_timerId = startTimer( 6 );
}
void K3bWidgetShowEffect::show( bool effectOnly )
{
m_bShow = true;
m_offset = 0;
m_dissolveSize = 24;
m_dissolveDelta = -1;
m_widget->polish();
if( m_effect == Dissolve ) {
// necessary to create the mask
m_mask.resize( m_widget->width(), m_widget->height() );
// make the mask empty and hence will not show widget with show() called below
dissolveMask();
m_timerId = startTimer( 1000 / 30 );
}
else {
m_widget->move( 0, m_widget->parentWidget()->height() );
m_timerId = startTimer( 6 );
}
if( !effectOnly )
m_widget->show();
}
void K3bWidgetShowEffect::timerEvent( QTimerEvent* )
{
switch( m_effect ) {
case Slide:
slideMask();
break;
case Dissolve:
dissolveMask();
break;
}
}
void K3bWidgetShowEffect::dissolveMask()
{
if( m_bShow ) {
m_widget->repaint( false );
QPainter maskPainter(&m_mask);
m_mask.fill(Qt::black);
maskPainter.setBrush(Qt::white);
maskPainter.setPen(Qt::white);
maskPainter.drawRect( m_mask.rect() );
m_dissolveSize += m_dissolveDelta;
if( m_dissolveSize > 0 ) {
maskPainter.setRasterOp( Qt::EraseROP );
int x, y, s;
const int size = 16;
for( y = 0; y < m_widget->height() + size; y += size ) {
x = m_widget->width();
s = m_dissolveSize * x / 128;
for( ; x > size; x -= size, s -= 2 ) {
if( s < 0 )
break;
maskPainter.drawEllipse(x - s / 2, y - s / 2, s, s);
}
}
}
else if( m_dissolveSize < 0 ) {
m_dissolveDelta = 1;
killTimer( m_timerId );
emit widgetShown( m_widget );
if( m_deleteSelf )
deleteLater();
}
m_widget->setMask( m_mask );
}
else {
// just hide it for now
emit widgetHidden( m_widget );
if( !m_bEffectOnly )
m_widget->hide();
if( m_deleteSelf )
deleteLater();
}
}
void K3bWidgetShowEffect::slideMask()
{
if( m_bShow ) {
m_widget->move( 0, m_widget->parentWidget()->height() - m_offset );
m_offset++;
if( m_offset > m_widget->height() ) {
killTimer( m_timerId );
emit widgetShown( m_widget );
if( m_deleteSelf )
deleteLater();
}
}
else {
m_offset--;
m_widget->move( 0, m_widget->parentWidget()->height() - m_offset );
if( m_offset < 0 ) {
// finally hide the widget
emit widgetHidden( m_widget );
if( !m_bEffectOnly )
m_widget->hide();
if( m_deleteSelf )
deleteLater();
}
}
}
K3bWidgetShowEffect* K3bWidgetShowEffect::showWidget( QWidget* w, Effect m )
{
K3bWidgetShowEffect* e = new K3bWidgetShowEffect( w, m );
e->m_deleteSelf = true;
e->show();
return e;
}
K3bWidgetShowEffect* K3bWidgetShowEffect::hideWidget( QWidget* w, Effect m )
{
K3bWidgetShowEffect* e = new K3bWidgetShowEffect( w, m );
e->m_deleteSelf = true;
e->hide();
return e;
}
#include "k3bwidgetshoweffect.moc"
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