/* This file is part of the KDE project
   Copyright (C) 2002-2003,2005 Rob Buis <buis@kde.org>
   Copyright (C) 2003,2006 Laurent Montel <montel@kde.org>
   Copyright (C) 2003 Dirk Mueller <mueller@kde.org>
   Copyright (C) 2003 Stephan Binner <binner@kde.org>
   Copyright (C) 2003 Tomislav Lukman <tomislav.lukman@ck.t-com.hr>
   Copyright (C) 2004 Nicolas Goutte <nicolasg@snafu.de>
   Copyright (C) 2005,2007 Thomas Zander <zander@kde.org>
   Copyright (C) 2006 Tim Beaulen <tbscope@gmail.com>
   Copyright (C) 2006-2007 Jan Hambrecht <jaham@gmx.net>
   Copyright (C) 2006 Andreas Hartmetz <ahartmetz@gmail.com>
   Copyright (C) 2006 Simon Hausmann <hausmann@kde.org>
   Copyright (C) 2006 Martin Pfeiffer <hubipete@gmx.net>
   Copyright (C) 2006 Peter Simonsson <psn@linux.se>

   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.
*/

#include "WhirlPinchPlugin.h"
#include "KarbonWhirlPinchCommand.h"

#include <KoUnitDoubleSpinBox.h>
#include <KoToolManager.h>
#include <KoCanvasController.h>
#include <KoCanvasBase.h>
#include <KoShapeManager.h>
#include <KoPathShape.h>
#include <KoParameterShape.h>
#include <KoSelection.h>

#include <kgenericfactory.h>
#include <kdebug.h>
#include <kicon.h>
#include <knuminput.h>
#include <kactioncollection.h>

#include <QtGui/QGroupBox>
#include <QtGui/QLabel>
#include <QtGui/QGridLayout>


typedef KGenericFactory<WhirlPinchPlugin, QWidget> WhirlPinchPluginFactory;
K_EXPORT_COMPONENT_FACTORY( karbon_whirlpinchplugin, WhirlPinchPluginFactory( "karbonwhirlpinchplugin" ) )

WhirlPinchPlugin::WhirlPinchPlugin( QWidget *parent, const QStringList & ) 
    : Plugin( parent )
{
    QAction *a = new KAction(KIcon( "14_whirl" ), i18n("&Whirl/Pinch..."), this );
    actionCollection()->addAction("path_whirlpinch", a);
    connect( a, SIGNAL( triggered() ), this, SLOT( slotWhirlPinch() ) );

    m_whirlPinchDlg = new WhirlPinchDlg(parent);
    m_whirlPinchDlg->setAngle( 180.0 );
    m_whirlPinchDlg->setPinch( 0.0 );
    m_whirlPinchDlg->setRadius( 100.0 );
}

void WhirlPinchPlugin::slotWhirlPinch()
{
    KoCanvasController* canvasController = KoToolManager::instance()->activeCanvasController();
    KoSelection *selection = canvasController->canvas()->shapeManager()->selection();
    KoShape * shape = selection->firstSelectedShape();
    if( ! shape )
        return;

    // check if we have a path based shape
    KoPathShape * path = dynamic_cast<KoPathShape*>( shape );
    if( ! path )
        return;

    // check if it is no parametric shape
    KoParameterShape * ps = dynamic_cast<KoParameterShape*>( shape );
    if( ps && ps->isParametricShape() )
        return;

    m_whirlPinchDlg->setUnit( canvasController->canvas()->unit() );

    if( QDialog::Rejected == m_whirlPinchDlg->exec() )
        return;

    canvasController->canvas()->addCommand( 
        new KarbonWhirlPinchCommand( path, m_whirlPinchDlg->angle(), m_whirlPinchDlg->pinch(), m_whirlPinchDlg->radius() ) );
}

WhirlPinchDlg::WhirlPinchDlg( QWidget* parent, const char* name )
    : KDialog( parent )
{
    setObjectName( name );
    setModal( true );
    setCaption( i18n( "Whirl Pinch" ) );
    setButtons( Ok | Cancel );

    QWidget * mainWidget = new QWidget(this);
    QVBoxLayout *mainLayout = new QVBoxLayout( mainWidget );
    mainLayout->setContentsMargins(0,0,0,0);

    QGroupBox* info = new QGroupBox( i18n( "Info" ), mainWidget );
    QVBoxLayout * infoLayout = new QVBoxLayout( info );
    QString infoText = i18n("The result of the Whirlpinch effect can be improved by refining the path shape beforehand.");
    QLabel * infoLabel = new QLabel( infoText, info );
    infoLabel->setWordWrap( true );
    infoLayout->addWidget( infoLabel );

    // add input fields:
    QGroupBox* group = new QGroupBox( i18n( "Properties" ), mainWidget );

    QGridLayout* layout = new QGridLayout(group);

    layout->addWidget(new QLabel( i18n( "Angle:" )), 0, 0);
    m_angle = new KDoubleNumInput( group );
    layout->addWidget(m_angle, 0, 1);

    layout->addWidget(new QLabel( i18n( "Pinch:" )), 1, 0);
    m_pinch = new KDoubleNumInput( group );
    m_pinch->setRange( -1, 1, 0.01, true );
    layout->addWidget(m_pinch, 1, 1);


    layout->addWidget(new QLabel( i18n( "Radius:" )), 2, 0);
    m_radius = new KoUnitDoubleSpinBox( group );
    m_radius->setMinimum( 0.0 );
    m_radius->setLineStepPt( 0.1 );
    layout->addWidget(m_radius, 2, 1);

    // signals and slots:
    connect( this, SIGNAL( okClicked() ), this, SLOT( accept() ) );
    connect( this, SIGNAL( cancelClicked() ), this, SLOT( reject() ) );

    mainLayout->addWidget( info );
    mainLayout->addWidget( group );

    setMainWidget( mainWidget );
}

qreal WhirlPinchDlg::angle() const
{
    return m_angle->value();
}

qreal WhirlPinchDlg::pinch() const
{
    return m_pinch->value();
}

qreal WhirlPinchDlg::radius() const
{
    return m_radius->value();
}

void WhirlPinchDlg::setAngle( qreal value )
{
    m_angle->setValue( value);
}

void WhirlPinchDlg::setPinch( qreal value )
{
    m_pinch->setValue(value);
}

void WhirlPinchDlg::setRadius( qreal value )
{
    m_radius->setValue( value);
}

void WhirlPinchDlg::setUnit( const KoUnit &unit )
{
    m_radius->setUnit( unit );
}

#include "WhirlPinchPlugin.moc"

