vcolorslider.cpp

/* This file is part of the KDE project
   Made by Tomislav Lukman (tomislav.lukman@ck.tel.hr)
   Copyright (C) 2002, The Karbon Developers
 
   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License as published by the Free Software Foundation; either
   version 2 of the License, or (at your option) any later version.
 
   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
   Library General Public License for more details.
 
   You should have received a copy of the GNU Library General Public License
   along with this library; see the file COPYING.LIB.  If not, write to
   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
*/
 
/* vcolorslider.cpp */
 
#include <tqlayout.h>
#include <tqlabel.h>
#include <knuminput.h>
#include <tdeselect.h>
 
#include "vcolorslider.h"
 
VColorSlider::VColorSlider( TQWidget* parent, const char* name )
    : TQWidget( parent, name )
{
    init();
}
 
// Label, left color, right color, min, max, value ...
VColorSlider::VColorSlider( const TQString& label, const TQColor& col1,
    const TQColor& col2, int min, int max, int value, TQWidget* parent, const char* name )
        : TQWidget( parent, name )
{
    init();
    setLabel( label );
    setColors( col1, col2 );
    setMinValue( min );
    setMaxValue( max );
    setValue( value );
}
 
VColorSlider::~VColorSlider()
{
}
 
void VColorSlider::init()
{
    m_isDragging = false;
    TQHBoxLayout *layout = new TQHBoxLayout( this, 3 );
 
    m_label = new TQLabel( this );
    m_gradientSelect = new KGradientSelector( TQt::Horizontal, this );
    m_spinBox = new KIntSpinBox( this );
 
    layout->addWidget( m_label );
    layout->addWidget( m_gradientSelect, 2 );
    layout->addWidget( m_spinBox );
 
    setValue( 0 );
    setMinValue( 0 );
    setMaxValue( 255 );
 
    connect( m_spinBox, TQ_SIGNAL( valueChanged ( int ) ), this, TQ_SLOT( updateFrom_spinBox( int ) ) );
    connect( m_gradientSelect, TQ_SIGNAL( valueChanged ( int ) ), this, TQ_SLOT( updateFrom_gradientSelect( int ) ) );
 
    m_gradientSelect->installEventFilter( this );
 
    layout->activate();
}
 
void VColorSlider::setLabel( const TQString& label )
{
    m_label->setText( label );
}
 
void VColorSlider::setColors( const TQColor& color1, const TQColor& color2 )
{
    m_gradientSelect->setColors( color1, color2 );
}
 
void VColorSlider::setValue( int value )
{
    m_spinBox->setValue( value );
    m_gradientSelect->setValue( (m_maxValue - value) + m_minValue );
}
 
void VColorSlider::setMinValue( int value )
{
    m_minValue = value;
    m_spinBox->setMinValue( value );
    m_gradientSelect->setMinValue( value );
}
 
void VColorSlider::setMaxValue( int value )
{
    m_maxValue = value;
    m_spinBox->setMaxValue( value );
    m_gradientSelect->setMaxValue( value );
}
 
int VColorSlider::value()
{
    return( m_spinBox->value() );
}
 
void VColorSlider::updateFrom_spinBox( int value )
{
    if ( value != m_gradientSelect->value() )
    {
        disconnect( m_gradientSelect, TQ_SIGNAL( valueChanged ( int ) ), this, TQ_SLOT( updateFrom_gradientSelect( int ) ) );
        m_gradientSelect->setValue( (m_maxValue - value) + m_minValue );
        connect( m_gradientSelect, TQ_SIGNAL( valueChanged ( int ) ), this, TQ_SLOT( updateFrom_gradientSelect( int ) ) );
        emit valueChanged( value );
    }
}
 
void VColorSlider::updateFrom_gradientSelect( int value )
{
    value = (m_maxValue - value) + m_minValue;
    if ( value != m_spinBox->value() )
    {
        disconnect( m_spinBox, TQ_SIGNAL( valueChanged ( int ) ), this, TQ_SLOT( updateFrom_spinBox( int ) ) );
        m_spinBox->setValue( value );
        connect( m_spinBox, TQ_SIGNAL( valueChanged ( int ) ), this, TQ_SLOT( updateFrom_spinBox( int ) ) );
        emit valueChanged( value );
    }
}
 
bool VColorSlider::eventFilter( TQObject *obj, TQEvent *ev )
{
    if( obj == m_gradientSelect ) 
    {
        if ( ev->type() == TQEvent::MouseButtonPress ) 
            m_isDragging = true;
        else if( ev->type() == TQEvent::MouseButtonRelease )
            m_isDragging = false;
    } 
    return false;
}
 
#include "vcolorslider.moc"