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444 lines
11 KiB
444 lines
11 KiB
/* This file is part of the KDE project
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Copyright (C) 2002, The Karbon Developers
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#include <math.h>
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#include <tqcursor.h>
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#include <tqlabel.h>
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#include <tdelocale.h>
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#include <KoPoint.h>
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#include <KoRect.h>
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#include <karbon_part.h>
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#include <karbon_view.h>
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#include <render/vpainter.h>
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#include <render/vpainterfactory.h>
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#include <visitors/vselectnodes.h>
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#include <commands/vtransformcmd.h>
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#include <visitors/vdrawselection.h>
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#include <core/vselection.h>
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#include <core/vcursor.h>
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#include "vselectnodestool.h"
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#include <vtransformnodes.h>
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#include <commands/vdeletenodescmd.h>
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#include <widgets/vcanvas.h>
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#include <kdebug.h>
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VSelectNodesTool::VSelectNodesTool( KarbonView* view )
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: VTool( view, "tool_select_nodes" ), m_state( normal ), m_select( true )
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{
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registerTool( this );
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}
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VSelectNodesTool::~VSelectNodesTool()
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{
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}
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void
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VSelectNodesTool::activate()
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{
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if( view() )
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{
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view()->setCursor( VCursor::needleArrow() );
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view()->part()->document().selection()->showHandle( false );
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view()->part()->document().selection()->setSelectObjects( false );
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// deselect all nodes
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view()->part()->document().selection()->selectNodes( false );
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view()->repaintAll( view()->part()->document().selection()->boundingBox() );
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}
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VTool::activate();
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}
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TQString
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VSelectNodesTool::statusText()
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{
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if( m_state == normal )
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return i18n( "Editing Nodes" );
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else
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return TQString( "" );
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}
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void
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VSelectNodesTool::draw()
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{
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VPainter *painter = view()->painterFactory()->editpainter();
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painter->setZoomFactor( view()->zoom() );
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painter->setRasterOp( TQt::NotROP );
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if( m_state == dragging )
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{
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painter->setPen( TQt::DotLine );
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painter->newPath();
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painter->moveTo( KoPoint( m_first.x(), m_first.y() ) );
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painter->lineTo( KoPoint( m_current.x(), m_first.y() ) );
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painter->lineTo( KoPoint( m_current.x(), m_current.y() ) );
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painter->lineTo( KoPoint( m_first.x(), m_current.y() ) );
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painter->lineTo( KoPoint( m_first.x(), m_first.y() ) );
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painter->strokePath();
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}
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else
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{
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VDrawSelection op( m_objects, painter, true, VSelection::handleSize() );
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VObjectListIterator itr = m_objects;
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for( ; itr.current(); ++itr )
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op.visit( *( itr.current() ) );
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}
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}
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void
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VSelectNodesTool::setCursor() const
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{
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if( m_state >= moving )
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{
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view()->setCursor( VCursor::needleMoveArrow() );
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return;
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}
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KoRect selrect = calcSelRect( last() );
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TQPtrList<VSegment> segments = view()->part()->document().selection()->getSegments( selrect );
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if( segments.count() > 0 )
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{
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VSegment* seg = segments.at( 0 );
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for( int i = 0; i < seg->degree(); ++i )
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if( seg->pointIsSelected( i ) && selrect.contains( seg->point( i ) ) )
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{
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view()->setCursor( VCursor::needleMoveArrow() );
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break;
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}
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}
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else
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view()->setCursor( VCursor::needleArrow() );
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}
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void
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VSelectNodesTool::mouseButtonPress()
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{
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m_first = m_current = first();
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m_state = normal;
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m_select = true;
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recalc();
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view()->part()->document().selection()->setState( VObject::edit );
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view()->repaintAll( view()->part()->document().selection()->boundingBox() );
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view()->part()->document().selection()->setState( VObject::selected );
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VSelection* selection = view()->part()->document().selection();
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KoRect selrect = calcSelRect( m_current );
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// get segments with control points inside selection rect
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TQPtrList<VSegment> segments = selection->getSegments( selrect );
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if( segments.count() > 0 )
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{
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VSegment *seg = segments.at( 0 );
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VSegment* prev = seg->prev();
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VSegment* next = seg->next();
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// allow moving bezier points only if one of the bezier points is within the selection rect
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// and no neighboring knot is selected
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if( segments.count() == 1 && ! selrect.contains( seg->knot() ) && ! seg->knotIsSelected()
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&& ( prev && ! prev->knotIsSelected() ) )
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{
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if( selrect.contains( seg->point( 1 ) ) )
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{
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m_state = movingbezier1;
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if( next )
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next->selectPoint( 0, false );
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}
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else if( selrect.contains( seg->point( 0 ) ) )
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{
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m_state = movingbezier2;
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if( prev )
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prev->selectPoint( 1, false );
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}
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}
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else
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{
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for( VSegment *seg = segments.first(); seg; seg = segments.next() )
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{
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for( int i = 0; i < seg->degree(); ++i )
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{
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if( seg->pointIsSelected( i ) && selrect.contains( seg->point( i ) ) )
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{
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m_state = moving;
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break;
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}
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}
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if( m_state == moving )
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break;
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}
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}
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double minDist = -1.0;
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// use the nearest control point of all the segments as starting point
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for( VSegment *seg = segments.first(); seg; seg = segments.next() )
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{
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for( int i = 0; i < seg->degree(); ++i )
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{
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if( selrect.contains( seg->point( i ) ) )
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{
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KoPoint vDist = seg->point( i ) - m_current;
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double dist = vDist.x()*vDist.x() + vDist.y()*vDist.y();
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if( minDist < 0.0 || dist < minDist )
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{
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m_first = seg->point( i );
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minDist = dist;
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}
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}
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}
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}
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recalc();
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}
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else
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m_state = dragging;
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draw();
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}
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void
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VSelectNodesTool::rightMouseButtonPress()
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{
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m_first = m_current = first();
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m_state = normal;
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m_select = false;
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recalc();
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view()->part()->document().selection()->setState( VObject::edit );
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view()->repaintAll( view()->part()->document().selection()->boundingBox() );
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view()->part()->document().selection()->setState( VObject::selected );
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draw();
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}
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bool
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VSelectNodesTool::keyReleased( TQt::Key key )
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{
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VSelection* selection = view()->part()->document().selection();
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switch( key )
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{
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// increase/decrease the handle size
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case TQt::Key_I:
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{
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uint handleSize = selection->handleSize();
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if( shiftPressed() )
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selection->setHandleSize( ++handleSize );
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else if( handleSize > 1 )
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selection->setHandleSize( --handleSize );
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}
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break;
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case TQt::Key_Delete:
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if( selection->objects().count() > 0 )
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view()->part()->addCommand( new VDeleteNodeCmd( &view()->part()->document() ), true );
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break;
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default: return false;
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}
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if( view() )
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view()->repaintAll( selection->boundingBox() );
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return true;
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}
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void
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VSelectNodesTool::mouseButtonRelease()
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{
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// erase old object:
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draw();
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VSelection* selection = view()->part()->document().selection();
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KoRect selrect = calcSelRect( last() );
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if( ctrlPressed() )
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selection->append( selrect.normalize(), false, false );
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else
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selection->append( selrect.normalize(), false, true );
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view()->selectionChanged();
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view()->part()->repaintAllViews();
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m_state = normal;
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}
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void
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VSelectNodesTool::rightMouseButtonRelease()
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{
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// erase old object:
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draw();
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VSelection* selection = view()->part()->document().selection();
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KoRect selrect = calcSelRect( last() );
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selection->take( selrect.normalize(), false, false );
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view()->selectionChanged();
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view()->part()->repaintAllViews();
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m_state = normal;
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}
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void
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VSelectNodesTool::mouseDrag()
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{
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draw();
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recalc();
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draw();
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}
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void
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VSelectNodesTool::mouseDragRelease()
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{
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if( m_state >= moving )
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{
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view()->part()->document().selection()->setState( VObject::selected );
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VCommand *cmd;
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TQPtrList<VSegment> segments;
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KoPoint _last = view()->canvasWidget()->snapToGrid( last() );
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if( m_state == movingbezier1 || m_state == movingbezier2 )
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{
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KoRect selrect = calcSelRect( m_first );
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segments = view()->part()->document().selection()->getSegments( selrect );
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cmd = new VTranslateBezierCmd( &view()->part()->document(), segments.at( 0 ),
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tqRound( ( _last.x() - m_first.x() ) ),
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tqRound( ( _last.y() - m_first.y() ) ),
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m_state == movingbezier2 );
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}
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else
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{
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cmd = new VTranslatePointCmd(
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&view()->part()->document(),
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tqRound( ( _last.x() - m_first.x() ) ),
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tqRound( ( _last.y() - m_first.y() ) ) );
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}
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view()->part()->addCommand( cmd, true );
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m_state = normal;
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}
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else
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{
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KoPoint fp = m_first;
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KoPoint lp = last();
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if ( (fabs(lp.x() - fp.x()) + fabs(lp.y()-fp.y())) < 3.0 )
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{
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// AK - should take the middle point here
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fp = last() - KoPoint(8.0, 8.0);
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lp = last() + KoPoint(8.0, 8.0);
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}
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// erase old object:
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draw();
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if( m_select )
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{
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view()->part()->document().selection()->append(); // select all
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view()->part()->document().selection()->append(
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KoRect( fp.x(), fp.y(), lp.x() - fp.x(), lp.y() - fp.y() ).normalize(),
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false, true );
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}
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else
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{
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view()->part()->document().selection()->take(
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KoRect( fp.x(), fp.y(), lp.x() - fp.x(), lp.y() - fp.y() ).normalize(),
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false, false );
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}
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view()->selectionChanged();
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view()->part()->repaintAllViews();
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m_state = normal;
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}
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}
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void
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VSelectNodesTool::cancel()
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{
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// Erase old object:
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if ( isDragging() )
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{
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draw();
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m_state = normal;
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view()->repaintAll( view()->part()->document().selection()->boundingBox() );
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}
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}
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void
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VSelectNodesTool::recalc()
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{
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if( m_state == dragging )
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{
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m_current = last();
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}
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else if( m_state == moving || m_state == movingbezier1 || m_state == movingbezier2 )
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{
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KoPoint _last = view()->canvasWidget()->snapToGrid( last() );
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double distx = _last.x() - m_first.x();
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double disty = _last.y() - m_first.y();
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// move operation
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TQWMatrix mat;
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mat.translate( distx, disty );
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// Copy selected objects and transform:
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m_objects.clear();
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VObject* copy;
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VTransformNodes op( mat );
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VObjectListIterator itr = view()->part()->document().selection()->objects();
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for ( ; itr.current() ; ++itr )
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{
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if( itr.current()->state() != VObject::deleted )
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{
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copy = itr.current()->clone();
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copy->setState( VObject::edit );
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op.visit( *copy );
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m_objects.append( copy );
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}
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}
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}
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}
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void
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VSelectNodesTool::setup( TDEActionCollection *collection )
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{
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m_action = static_cast<TDERadioAction *>(collection -> action( name() ) );
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if( m_action == 0 )
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{
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m_action = new TDERadioAction( i18n( "Select Nodes Tool" ), "14_selectnodes", TQt::SHIFT+TQt::Key_H, this, TQT_SLOT( activate() ), collection, name() );
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m_action->setToolTip( i18n( "Select Nodes" ) );
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m_action->setExclusiveGroup( "select" );
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//m_ownAction = true;
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}
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}
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KoRect
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VSelectNodesTool::calcSelRect( const KoPoint &pos ) const
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{
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double tolerance = view()->part()->document().selection()->handleSize() / view()->zoom();
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return KoRect( pos.x() - tolerance, pos.y() - tolerance, 2 * tolerance + 1.0, 2 * tolerance + 1.0 );
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}
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