vrotatetool.cpp

/* This file is part of the KDE project
   Copyright (C) 2001, 2002, 2003 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.
*/
 
#include <math.h>
 
#include <tqcursor.h>
#include <tqlabel.h>
 
#include <tdelocale.h>
#include <KoRect.h>
 
#include <karbon_part.h>
#include <karbon_view.h>
#include <core/vglobal.h>
#include "vrotatetool.h"
#include <render/vpainter.h>
#include <render/vpainterfactory.h>
#include <commands/vtransformcmd.h>
 
#include <kdebug.h>
 
VRotateTool::VRotateTool( KarbonView *view )
    : VTool( view, "tool_rotate" )
{
    m_objects.setAutoDelete( true );
    registerTool( this );
}
 
VRotateTool::~VRotateTool()
{
    m_objects.clear();
}
 
void
VRotateTool::activate()
{
    view()->setCursor( TQCursor( TQt::arrowCursor ) );
    view()->part()->document().selection()->setState( VObject::selected );
    view()->part()->document().selection()->showHandle( false );
    VTool::activate();
}
 
TQString
VRotateTool::statusText()
{
    return i18n( "Rotate" );
}
 
void
VRotateTool::draw()
{
    VPainter* painter = view()->painterFactory()->editpainter();
    //painter->setZoomFactor( view()->zoom() );
    painter->setRasterOp( TQt::NotROP );
 
    VObjectListIterator itr = m_objects;
    for( ; itr.current(); ++itr )
    {
        itr.current()->draw( painter, &itr.current()->boundingBox() );
    }
}
 
void
VRotateTool::mouseButtonPress()
{
    //view()->painterFactory()->painter()->end();
 
    recalc();
 
    // Draw new object:
    draw();
}
 
void
VRotateTool::mouseDrag()
{
    // Erase old object:
    draw();
 
    recalc();
 
    // Draw new object:
    draw();
}
 
void
VRotateTool::mouseDragRelease()
{
    view()->part()->addCommand(
        new VRotateCmd(
            &view()->part()->document(),
            m_center,
            m_angle, altPressed() ),
        true );
}
 
void
VRotateTool::cancel()
{
    // Erase old object:
    if ( isDragging() )
    {
        draw();
        view()->repaintAll( view()->part()->document().selection()->boundingBox() );
    }
}
 
void
VRotateTool::recalc()
{
    // Get center:
    m_center = view()->part()->document().selection()->boundingBox().center();
 
    // Calculate angle between vector (last - center) and (first - center):
    m_angle = VGlobal::one_pi_180 * (
            atan2(
                last().y() - m_center.y(),
                last().x() - m_center.x() )
        -
            atan2(
                first().y() - m_center.y(),
                first().x() - m_center.x() ) );
 
    VRotateCmd cmd( 0L, m_center, m_angle );
 
    // Copy selected objects and transform:
    m_objects.clear();
    VObject* copy;
 
    VObjectListIterator itr = view()->part()->document().selection()->objects();
    for ( ; itr.current() ; ++itr )
    {
        if( itr.current()->state() != VObject::deleted )
        {
            copy = itr.current()->clone();
 
            cmd.visit( *copy );
 
            copy->setState( VObject::edit );
 
            m_objects.append( copy );
        }
    }
}
 
void
VRotateTool::setup( TDEActionCollection *collection )
{
    m_action = static_cast<TDERadioAction *>(collection -> action( name() ) );
 
    if( m_action == 0 )
    {
        m_action = new TDERadioAction( i18n( "Rotate Tool" ), "14_rotate", TQt::SHIFT+TQt::Key_H, this, TQ_SLOT( activate() ), collection, name() );
        m_action->setToolTip( i18n( "Rotate" ) );
        m_action->setExclusiveGroup( "manipulation" );
        //m_ownAction = true;
    }
}