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/* This file is doc of the KDE project
Copyright (C) 2005 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 <klocale.h>
#include "vdistributecmd.h"
#include "vtransformcmd.h"
#include "vdocument.h"
#include "vselection.h"
VDistributeCmd::VDistributeCmd( VDocument *doc, Distribute distribute )
: VCommand( doc, i18n( "Distribute Objects" ) ), m_distribute( distribute )
{
m_trafoCmds.setAutoDelete( true );
}
VDistributeCmd::~VDistributeCmd()
{
}
void
VDistributeCmd::execute()
{
if( document()->selection()->objects().count() <= 2 )
return;
KoRect bbox;
double extent = 0.0;
double dx, dy;
VObjectList objs = document()->selection()->objects();
VObjectListIterator itr( objs );
QMap<double,VObject*> sortedPos;
// sort by position and calculate sum of objects widht/height
for( ; itr.current(); ++itr )
{
bbox = itr.current()->boundingBox();
switch( m_distribute )
{
case DISTRIBUTE_HORIZONTAL_CENTER:
sortedPos[bbox.center().x()] = itr.current();
break;
case DISTRIBUTE_HORIZONTAL_GAP:
case DISTRIBUTE_HORIZONTAL_LEFT:
sortedPos[bbox.left()] = itr.current();
extent += bbox.width();
break;
case DISTRIBUTE_HORIZONTAL_RIGHT:
sortedPos[bbox.right()] = itr.current();
break;
case DISTRIBUTE_VERTICAL_CENTER:
sortedPos[bbox.center().y()] = itr.current();
break;
case DISTRIBUTE_VERTICAL_GAP:
case DISTRIBUTE_VERTICAL_BOTTOM:
sortedPos[bbox.bottom()] = itr.current();
extent += bbox.height();
break;
case DISTRIBUTE_VERTICAL_TOP:
sortedPos[bbox.top()] = itr.current();
break;
}
}
VObject* first = sortedPos.begin().data();
VObject* last = (--sortedPos.end()).data();
// determine the available space to distribute
double space = getAvailableSpace( first, last, extent );
double pos = 0.0, step = space / double(objs.count() - 1);
VTranslateCmd *trafoCmd = 0L;
QMapIterator<double,VObject*> it = sortedPos.begin(), et = sortedPos.end();
for( ; it != et; ++it )
{
if( it.data() == first || it.data() == last )
continue;
pos += step;
document()->selection()->clear();
bbox = it.data()->boundingBox();
switch( m_distribute )
{
case DISTRIBUTE_HORIZONTAL_CENTER:
dx = first->boundingBox().center().x() + pos - bbox.center().x();
dy = 0.0;
break;
case DISTRIBUTE_HORIZONTAL_GAP:
dx = first->boundingBox().right() + pos + 0.5 * bbox.width() - bbox.center().x();
dy = 0.0;
pos += bbox.width();
break;
case DISTRIBUTE_HORIZONTAL_LEFT:
dx = first->boundingBox().left() + pos - bbox.left();
dy = 0.0;
break;
case DISTRIBUTE_HORIZONTAL_RIGHT:
dx = first->boundingBox().right() + pos - bbox.right();
dy = 0.0;
break;
case DISTRIBUTE_VERTICAL_CENTER:
dx = 0.0;
dy = first->boundingBox().center().y() + pos - bbox.center().y();
break;
case DISTRIBUTE_VERTICAL_GAP:
dx = 0.0;
dy = first->boundingBox().bottom() + pos + 0.5 * bbox.height() - bbox.center().y();
pos += bbox.height();
break;
case DISTRIBUTE_VERTICAL_BOTTOM:
dx = 0.0;
dy = first->boundingBox().bottom() + pos - bbox.bottom();
break;
case DISTRIBUTE_VERTICAL_TOP:
dx = 0.0;
dy = first->boundingBox().top() + pos - bbox.top();
break;
};
document()->selection()->append( it.data() );
trafoCmd = new VTranslateCmd( document(), dx, dy );
m_trafoCmds.append( trafoCmd );
trafoCmd->execute();
}
// re-add object to selection
itr.toFirst();
for( ; itr.current() ; ++itr )
document()->selection()->append( itr.current() );
setSuccess( true );
}
void
VDistributeCmd::unexecute()
{
QPtrListIterator<VTranslateCmd> itr( m_trafoCmds );
for( ; itr.current() ; ++itr )
itr.current()->unexecute();
setSuccess( false );
}
double
VDistributeCmd::getAvailableSpace( VObject *first, VObject *last, double extent )
{
switch( m_distribute )
{
case DISTRIBUTE_HORIZONTAL_CENTER:
return last->boundingBox().center().x() - first->boundingBox().center().x();
break;
case DISTRIBUTE_HORIZONTAL_GAP:
extent -= first->boundingBox().width() + last->boundingBox().width();
return last->boundingBox().left() - first->boundingBox().right() - extent;
break;
case DISTRIBUTE_HORIZONTAL_LEFT:
return last->boundingBox().left() - first->boundingBox().left();
break;
case DISTRIBUTE_HORIZONTAL_RIGHT:
return last->boundingBox().right() - first->boundingBox().right();
break;
case DISTRIBUTE_VERTICAL_CENTER:
return last->boundingBox().center().y() - first->boundingBox().center().y();
break;
case DISTRIBUTE_VERTICAL_GAP:
extent -= first->boundingBox().height() + last->boundingBox().height();
return last->boundingBox().top() - first->boundingBox().bottom() - extent;
break;
case DISTRIBUTE_VERTICAL_BOTTOM:
return last->boundingBox().bottom() - first->boundingBox().bottom();
break;
case DISTRIBUTE_VERTICAL_TOP:
return last->boundingBox().top() - first->boundingBox().top();
break;
}
return 0.0;
}
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