vsheartool.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 <render/vpainter.h>
#include <render/vpainterfactory.h>
#include <vselection.h>
#include "vsheartool.h"
#include <commands/vtransformcmd.h>
 
VShearTool::VShearTool( KarbonView *view ) : VTool( view, "sheartool" )
{
    setName( "tool_shear" );
    m_objects.setAutoDelete( true );
    registerTool( this );
}
 
VShearTool::~VShearTool()
{
}
 
void
VShearTool::activate()
{
    view()->setCursor( TQCursor( TQt::arrowCursor ) );
    view()->part()->document().selection()->showHandle( true );
    view()->part()->document().selection()->setState( VObject::selected );
    VTool::activate();
}
 
TQString
VShearTool::statusText()
{
    return i18n( "Shear" );
}
 
void
VShearTool::draw()
{
    VPainter* painter = view()->painterFactory()->editpainter();
    painter->setRasterOp( TQt::NotROP );
 
    VObjectListIterator itr = m_objects;
    for( ; itr.current(); ++itr )
        itr.current()->draw( painter, &itr.current()->boundingBox() );
}
 
void
VShearTool::setCursor() const
{
    if( isDragging() ) return;
    switch( view()->part()->document().selection()->handleNode( last() ) )
    {
        case node_lt:
        case node_rb:
            view()->setCursor( TQCursor( TQt::SizeFDiagCursor ) );
            break;
        case node_rt:
        case node_lb:
            view()->setCursor( TQCursor( TQt::SizeBDiagCursor ) );
            break;
        case node_lm:
        case node_rm:
            view()->setCursor( TQCursor( TQt::SizeHorCursor ) );
            break;
        case node_mt:
        case node_mb:
            view()->setCursor( TQCursor( TQt::SizeVerCursor ) );
            break;
        default:
            view()->setCursor( TQCursor( TQt::arrowCursor ) );
    }
}
 
void
VShearTool::mouseButtonPress()
{
    view()->painterFactory()->painter()->end();
    m_activeNode = view()->part()->document().selection()->handleNode( first() );
    recalc();
 
    // Draw new object:
    draw();
}
 
void
VShearTool::mouseDrag( )
{
    // Erase old object:
    draw();
 
    recalc();
 
    // Draw new object:
    draw();
}
 
 
void
VShearTool::mouseDragRelease()
{
    view()->part()->addCommand(
        new VShearCmd( &view()->part()->document(), m_center, m_s1, m_s2, altPressed() ),
        true );
}
 
void
VShearTool::cancel()
{
    // Erase old object:
    if ( isDragging() )
    {
        draw();
        view()->repaintAll( view()->part()->document().selection()->boundingBox() );
    }
}
 
void
VShearTool::recalc()
{
    KoRect rect = view()->part()->document().selection()->boundingBox();
 
    if( m_activeNode == node_lt )
    {
    }
    else if( m_activeNode == node_mt )
    {
        m_s1 = 0;
        m_s2 = ( last().y() - first().y() ) / double( ( rect.height() / 2 ) );
    }
    else if( m_activeNode == node_rt )
    {
    }
    else if( m_activeNode == node_rm)
    {
        m_s1 = ( last().x() - first().x() ) / double( ( rect.width() / 2 ) );
        m_s2 = 0;
    }
    else if( m_activeNode == node_rb )
    {
    }
    else if( m_activeNode == node_mb )
    {
        m_s1 = 0;
        m_s2 = ( last().y() - first().y() ) / double( ( rect.height() / 2 ) );
    }
    else if( m_activeNode == node_lb )
    {
    }
    else if( m_activeNode == node_lm )
    {
        m_s1 = ( last().x() - first().x() ) / double( ( rect.width() / 2 ) );
        m_s2 = 0;
    }
 
    // Get center:
    m_center = view()->part()->document().selection()->boundingBox().center();
 
    VShearCmd cmd( 0L, m_center, m_s1, m_s2 );
 
    // 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
VShearTool::setup( TDEActionCollection *collection )
{
    m_action = static_cast<TDERadioAction *>(collection -> action( name() ) );
 
    if( m_action == 0 )
    {
        m_action = new TDERadioAction( i18n( "Shear Tool" ), "14_shear", TQt::SHIFT+TQt::Key_H, this, TQ_SLOT( activate() ), collection, name() );
        m_action->setToolTip( i18n( "Shear" ) );
        m_action->setExclusiveGroup( "manipulation" );
        //m_ownAction = true;
    }
}