valigncmd.cpp

/* This file is doc 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 <tdelocale.h>
 
#include "valigncmd.h"
#include "vtransformcmd.h"
#include "vdocument.h"
#include "vselection.h"
 
#include <kdebug.h>
 
VAlignCmd::VAlignCmd( VDocument *doc, Align align )
    : VCommand( doc, i18n( "Align Objects" ) ), m_align( align )
{
    m_trafoCmds.setAutoDelete( true );
}
 
VAlignCmd::~VAlignCmd()
{
}
 
void
VAlignCmd::execute()
{
    if( document()->selection()->objects().count() == 0 )
        return;
    double dx, dy;
    KoRect bbox;
    KoRect r;
    if( document()->selection()->objects().count() == 1 )
        r = document()->boundingBox();
    else
        r = document()->selection()->boundingBox();
    VObjectList objs = document()->selection()->objects();
    VObjectListIterator itr( objs );
    VTranslateCmd *trafoCmd = 0L;
    for( ; itr.current() ; ++itr )
    {
        document()->selection()->clear();
        bbox = itr.current()->boundingBox();
        switch( m_align )
        {
            case ALIGN_HORIZONTAL_LEFT  :   dx = r.topLeft().x() - bbox.topLeft().x(); dy = 0; break;
            case ALIGN_HORIZONTAL_CENTER:   dx = r.center().x() - bbox.center().x(); dy = 0; break;
            case ALIGN_HORIZONTAL_RIGHT :   dx = r.topRight().x() - bbox.topRight().x(); dy = 0; break;
            case ALIGN_VERTICAL_TOP     :   dx = 0; dy = r.bottomRight().y() - bbox.bottomRight().y(); break;
            case ALIGN_VERTICAL_CENTER  :   dx = 0; dy = r.center().y() - bbox.center().y(); break;
            case ALIGN_VERTICAL_BOTTOM  :   dx = 0; dy = r.topLeft().y() - bbox.topLeft().y(); break;
        };
        document()->selection()->append( itr.current() );
        trafoCmd = new VTranslateCmd( document(), dx, dy );
        m_trafoCmds.append( trafoCmd );
        trafoCmd->execute();
    }
    itr.toFirst();
    for( ; itr.current() ; ++itr )
        document()->selection()->append( itr.current() );
    setSuccess( true );
}
 
void
VAlignCmd::unexecute()
{
    TQPtrListIterator<VTranslateCmd> itr( m_trafoCmds );
    for( ; itr.current() ; ++itr )
        itr.current()->unexecute();
    setSuccess( false );
}