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koffice/karbon/visitors/vdrawselection.cc

175 lines
4.5 KiB

/* This file is part of the KDE project
Copyright (C) 2002, 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 "vdrawselection.h"
#include "vcomposite.h"
#include "vsegment.h"
#include "vcolor.h"
#include "vstroke.h"
#include "vpainter.h"
#include "vpath.h"
void
VDrawSelection::visitVPath( VPath &composite )
{
if(
composite.state() == VObject::deleted ||
composite.state() == VObject::hidden ||
composite.state() == VObject::hidden_locked )
{
return;
}
m_painter->save();
m_painter->setPen( Qt::SolidLine );
const bool editnodes = composite.state() == VObject::edit && m_nodeediting;
VSubpathListIterator itr( composite.paths() );
if(
composite.state() == VObject::selected ||
editnodes )
{
// paint fill:
m_painter->newPath();
if( editnodes )
m_painter->setRasterOp( Qt::XorROP );
m_painter->setPen( editnodes ? Qt::yellow : Qt::blue );
m_painter->setBrush( Qt::NoBrush );
for( itr.toFirst(); itr.current(); ++itr )
{
VSubpathIterator jtr( *( itr.current() ) );
for( ; jtr.current(); ++jtr )
{
jtr.current()->draw( m_painter );
}
m_painter->strokePath();
}
}
// Draw nodes and control lines.
if(
composite.state() == VObject::selected ||
editnodes )
{
itr.toFirst();
//++itr; // Skip "begin".
for( ; itr.current(); ++itr )
{
if( (*itr)->isEmpty() )
continue;
VSubpathIterator jtr( *( itr.current() ) );
//++jtr;
for( ; jtr.current(); ++jtr )
{
if( editnodes )
m_painter->setRasterOp( Qt::XorROP );
VColor color;
color.set( 0.5, 0.5, 1.0 );
VStroke stroke( color );
stroke.setLineWidth( 1.0 );
if( !editnodes )
{
m_painter->setPen( stroke );
m_painter->setPen( Qt::blue );
}
else
m_painter->setPen( Qt::yellow );
m_painter->setBrush( Qt::NoBrush );
if( ( editnodes || composite.state() == VObject::selected && m_nodeediting ) &&
jtr.current()->isCurve() )
{
VSegment* curr = jtr.current();
VSegment* next = curr->next();
VSegment* prev = curr->prev();
// Draw control lines.
if ( curr->pointIsSelected( curr->degree()-2 ) || curr->knotIsSelected()
|| ( next && next->isCurve() && next->pointIsSelected( 0 ) && curr->isSmooth() ) )
{
m_painter->newPath();
m_painter->moveTo( curr->point( curr->degree()-2 ) );
m_painter->lineTo( curr->knot() );
m_painter->strokePath();
// Draw control node2:
m_painter->newPath();
m_painter->setBrush( editnodes ? Qt::yellow : Qt::blue );
m_painter->drawNode( curr->point( curr->degree()-2 ), m_nodeSize );
m_painter->strokePath();
}
if ( prev && ( ( prev->knotIsSelected() || curr->pointIsSelected( 0 ) )
|| ( prev->isCurve() && prev->pointIsSelected( prev->degree()-2 ) && prev->isSmooth() ) ) )
{
m_painter->newPath();
m_painter->moveTo( prev->knot() );
m_painter->lineTo( curr->point( 0 ) );
m_painter->strokePath();
// Draw control node1:
m_painter->newPath();
m_painter->setBrush( editnodes ? Qt::yellow : Qt::blue );
m_painter->drawNode( curr->point( 0 ), m_nodeSize );
m_painter->strokePath();
}
}
// Draw knot.
m_painter->setPen( editnodes ? Qt::yellow : Qt::blue );
if( !m_nodeediting )
m_painter->setBrush( Qt::blue );
else if( jtr.current()->knotIsSelected() )
m_painter->setBrush( editnodes ? Qt::yellow : Qt::blue );
else
m_painter->setBrush( Qt::white );
m_painter->drawNode( jtr.current()->knot(), m_nodeSize );
}
}
}
// Draw center node.
if( composite.drawCenterNode() && composite.state() == VObject::selected && !m_nodeediting )
{
m_painter->setPen( Qt::NoPen );
m_painter->setBrush( Qt::blue.light() );
m_painter->drawNode( composite.boundingBox().center(), m_nodeSize );
}
m_painter->restore();
setSuccess();
}