diff options
Diffstat (limited to 'karbon/visitors/vselectobjects.cpp')
| -rw-r--r-- | karbon/visitors/vselectobjects.cpp | 273 |
1 files changed, 273 insertions, 0 deletions
diff --git a/karbon/visitors/vselectobjects.cpp b/karbon/visitors/vselectobjects.cpp new file mode 100644 index 00000000..060eeacb --- /dev/null +++ b/karbon/visitors/vselectobjects.cpp @@ -0,0 +1,273 @@ +/* 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 "vselectobjects.h" +#include "vlayer.h" +#include "vdocument.h" +#include "vsegment.h" +#include <kdebug.h> + +void +VSelectObjects::visitVPath( VPath& composite ) +{ + // Never select a deleted, locked or hidden object. + if( composite.state() > VObject::normal && + composite.state() < VObject::selected ) + return; + + if( m_rectMode && m_rect.isEmpty() ) // in this mode everything is selected + { + visitVObject( composite ); + return; + } + + bool selected = false; + + if( m_rectMode ) + { + // Check if composite is completely inside the selection rectangle. + // This test should be the first test since it's the less expensive one. + if( m_rect.contains( composite.boundingBox() ) ) + { + selected = true; + } + + // Check if any of the rectangle corners is inside the composite. + // This test should be done before the intersect test since it covers many + // intersection cases. + if( !selected ) + { + if( + composite.pointIsInside( m_rect.topLeft() ) || + composite.pointIsInside( m_rect.topRight() ) || + composite.pointIsInside( m_rect.bottomRight() ) || + composite.pointIsInside( m_rect.bottomLeft() ) ) + { + selected = true; + } + } + + // Check if selection rectangle intersects the composite. + if( !selected ) + { + // Path for holding a helper segment. + VSubpath path( 0L ); + + path.moveTo( m_rect.topLeft() ); + path.lineTo( m_rect.topRight() ); + + if( composite.intersects( *path.getLast() ) ) + { + selected = true; + } + else + { + path.getFirst()->setKnot( m_rect.bottomRight() ); + + if( composite.intersects( *path.getLast() ) ) + { + selected = true; + } + else + { + path.getLast()->setKnot( m_rect.bottomLeft() ); + + if( composite.intersects( *path.getLast() ) ) + { + selected = true; + } + else + { + path.getFirst()->setKnot( m_rect.topLeft() ); + + if( composite.intersects( *path.getLast() ) ) + { + selected = true; + } + } + } + } + } + } + else + { + if( composite.pointIsInside( m_point ) ) + selected = true; + } + + if( selected ) + { + if( m_select ) + { + composite.setState( VObject::selected ); + if( ! m_selection.containsRef( &composite ) ) + m_selection.append( &composite ); + } + else + { + composite.setState( VObject::normal ); + m_selection.remove( &composite ); + } + + setSuccess(); + } +} + +void +VSelectObjects::visitVObject( VObject& object ) +{ + // Never select a deleted, locked or hidden object. + if( object.state() > VObject::normal && + object.state() < VObject::selected ) + return; + + // selection by selection rectangle + if( m_rectMode ) + { + if( !m_rect.isEmpty() ) + { + if( m_select ) + { + if( m_rect.intersects( object.boundingBox() ) ) + { + object.setState( VObject::selected ); + if( ! m_selection.containsRef( &object ) ) + m_selection.append( &object ); + setSuccess(); + } + } + else + { + if( m_rect.intersects( object.boundingBox() ) ) + { + object.setState( VObject::normal ); + m_selection.remove( &object ); + setSuccess(); + } + } + } + else + { + if( m_select ) + { + object.setState( VObject::selected ); + if( ! m_selection.containsRef( &object ) ) + m_selection.append( &object ); + setSuccess(); + } + else + { + object.setState( VObject::normal ); + m_selection.remove( &object ); + setSuccess(); + } + } + } + // selection by point + else + { + if( object.boundingBox().contains( m_point ) ) + { + if( m_select ) + { + object.setState( VObject::selected ); + if( ! m_selection.containsRef( &object ) ) + m_selection.append( &object ); + } + else + { + object.setState( VObject::normal ); + m_selection.remove( &object ); + } + setSuccess(); + } + } + +} + +void +VSelectObjects::visitVLayer( VLayer& layer ) +{ + VDocument* doc = (VDocument*)layer.parent(); + if ( ( layer.state() != VObject::deleted ) && + ( ( doc->selectionMode() == VDocument::AllLayers ) || + ( doc->selectionMode() == VDocument::VisibleLayers && ( layer.state() == VObject::normal || layer.state() == VObject::normal_locked ) ) || + ( doc->selectionMode() == VDocument::SelectedLayers && layer.selected() ) || + ( doc->selectionMode() == VDocument::ActiveLayer && doc->activeLayer() == &layer ) ) ) + { + VObjectListIterator itr( layer.objects() ); + for( ; itr.current(); ++itr ) + itr.current()->accept( *this ); + } +} + +void +VSelectObjects::visitVText( VText& text ) +{ + // Never select a deleted, locked or hidden object. + if( text.state() > VObject::normal && + text.state() < VObject::selected ) + return; + + int deselectedGlyphs = 0; + + VPathListIterator itr( text.glyphs() ); + for( ; itr.current(); ++itr ) + { + VPath c( 0L ); + c.combine( *itr.current() ); + visitVPath( c ); + if( m_select && c.state() == VObject::selected ) + { + kdDebug(38000) << "selected: " << itr.current() << endl; + m_selection.remove( &c ); + text.setState( VObject::selected ); + if( ! m_selection.containsRef( &text ) ) + m_selection.append( &text ); + return; + } + else if( c.state() == VObject::normal ) + { + kdDebug(38000) << "deselected: " << itr.current() << endl; + deselectedGlyphs++; + } + } + if( deselectedGlyphs >= 0 && uint( deselectedGlyphs ) == text.glyphs().count() ) + { + text.setState( VObject::normal ); + m_selection.remove( &text ); + } +} + +void +VSelectObjects::visitVGroup( VGroup& group ) +{ + // Never select a deleted, locked or hidden object. + if( group.state() > VObject::normal && + group.state() < VObject::selected ) + return; + + if( ! m_insideGroups ) + visitVObject( group ); + else + { + VVisitor::visitVGroup( group ); + } +} |