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-rw-r--r--karbon/tools/vselectnodestool.cpp443
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diff --git a/karbon/tools/vselectnodestool.cpp b/karbon/tools/vselectnodestool.cpp
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+/* 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 <math.h>
+
+#include <tqcursor.h>
+#include <tqlabel.h>
+
+#include <tdelocale.h>
+#include <KoPoint.h>
+#include <KoRect.h>
+
+#include <karbon_part.h>
+#include <karbon_view.h>
+
+#include <render/vpainter.h>
+#include <render/vpainterfactory.h>
+#include <visitors/vselectnodes.h>
+#include <commands/vtransformcmd.h>
+#include <visitors/vdrawselection.h>
+#include <core/vselection.h>
+#include <core/vcursor.h>
+#include "vselectnodestool.h"
+#include <vtransformnodes.h>
+#include <commands/vdeletenodescmd.h>
+#include <widgets/vcanvas.h>
+
+#include <kdebug.h>
+
+VSelectNodesTool::VSelectNodesTool( KarbonView* view )
+ : VTool( view, "tool_select_nodes" ), m_state( normal ), m_select( true )
+{
+ registerTool( this );
+}
+
+VSelectNodesTool::~VSelectNodesTool()
+{
+}
+
+void
+VSelectNodesTool::activate()
+{
+ if( view() )
+ {
+ view()->setCursor( VCursor::needleArrow() );
+ view()->part()->document().selection()->showHandle( false );
+ view()->part()->document().selection()->setSelectObjects( false );
+ // deselect all nodes
+ view()->part()->document().selection()->selectNodes( false );
+ view()->repaintAll( view()->part()->document().selection()->boundingBox() );
+ }
+ VTool::activate();
+}
+
+TQString
+VSelectNodesTool::statusText()
+{
+ if( m_state == normal )
+ return i18n( "Editing Nodes" );
+ else
+ return TQString( "" );
+}
+
+void
+VSelectNodesTool::draw()
+{
+ VPainter *painter = view()->painterFactory()->editpainter();
+ painter->setZoomFactor( view()->zoom() );
+ painter->setRasterOp( TQt::NotROP );
+
+ if( m_state == dragging )
+ {
+ painter->setPen( TQt::DotLine );
+ painter->newPath();
+ painter->moveTo( KoPoint( m_first.x(), m_first.y() ) );
+ painter->lineTo( KoPoint( m_current.x(), m_first.y() ) );
+ painter->lineTo( KoPoint( m_current.x(), m_current.y() ) );
+ painter->lineTo( KoPoint( m_first.x(), m_current.y() ) );
+ painter->lineTo( KoPoint( m_first.x(), m_first.y() ) );
+ painter->strokePath();
+ }
+ else
+ {
+ VDrawSelection op( m_objects, painter, true, VSelection::handleSize() );
+ VObjectListIterator itr = m_objects;
+ for( ; itr.current(); ++itr )
+ op.visit( *( itr.current() ) );
+ }
+}
+
+void
+VSelectNodesTool::setCursor() const
+{
+ if( m_state >= moving )
+ {
+ view()->setCursor( VCursor::needleMoveArrow() );
+ return;
+ }
+
+ KoRect selrect = calcSelRect( last() );
+
+ TQPtrList<VSegment> segments = view()->part()->document().selection()->getSegments( selrect );
+ if( segments.count() > 0 )
+ {
+ VSegment* seg = segments.at( 0 );
+ for( int i = 0; i < seg->degree(); ++i )
+ if( seg->pointIsSelected( i ) && selrect.contains( seg->point( i ) ) )
+ {
+ view()->setCursor( VCursor::needleMoveArrow() );
+ break;
+ }
+ }
+ else
+ view()->setCursor( VCursor::needleArrow() );
+}
+
+void
+VSelectNodesTool::mouseButtonPress()
+{
+ m_first = m_current = first();
+
+ m_state = normal;
+ m_select = true;
+
+ recalc();
+
+ view()->part()->document().selection()->setState( VObject::edit );
+ view()->repaintAll( view()->part()->document().selection()->boundingBox() );
+ view()->part()->document().selection()->setState( VObject::selected );
+
+ VSelection* selection = view()->part()->document().selection();
+
+ KoRect selrect = calcSelRect( m_current );
+
+ // get segments with control points inside selection rect
+ TQPtrList<VSegment> segments = selection->getSegments( selrect );
+ if( segments.count() > 0 )
+ {
+ VSegment *seg = segments.at( 0 );
+ VSegment* prev = seg->prev();
+ VSegment* next = seg->next();
+
+ // allow moving bezier points only if one of the bezier points is within the selection rect
+ // and no neighboring knot is selected
+ if( segments.count() == 1 && ! selrect.contains( seg->knot() ) && ! seg->knotIsSelected()
+ && ( prev && ! prev->knotIsSelected() ) )
+ {
+ if( selrect.contains( seg->point( 1 ) ) )
+ {
+ m_state = movingbezier1;
+ if( next )
+ next->selectPoint( 0, false );
+ }
+ else if( selrect.contains( seg->point( 0 ) ) )
+ {
+ m_state = movingbezier2;
+ if( prev )
+ prev->selectPoint( 1, false );
+ }
+ }
+ else
+ {
+ for( VSegment *seg = segments.first(); seg; seg = segments.next() )
+ {
+ for( int i = 0; i < seg->degree(); ++i )
+ {
+ if( seg->pointIsSelected( i ) && selrect.contains( seg->point( i ) ) )
+ {
+ m_state = moving;
+ break;
+ }
+ }
+ if( m_state == moving )
+ break;
+ }
+ }
+
+ double minDist = -1.0;
+ // use the nearest control point of all the segments as starting point
+ for( VSegment *seg = segments.first(); seg; seg = segments.next() )
+ {
+ for( int i = 0; i < seg->degree(); ++i )
+ {
+ if( selrect.contains( seg->point( i ) ) )
+ {
+ KoPoint vDist = seg->point( i ) - m_current;
+ double dist = vDist.x()*vDist.x() + vDist.y()*vDist.y();
+ if( minDist < 0.0 || dist < minDist )
+ {
+ m_first = seg->point( i );
+ minDist = dist;
+ }
+ }
+ }
+ }
+ recalc();
+ }
+ else
+ m_state = dragging;
+
+ draw();
+}
+
+void
+VSelectNodesTool::rightMouseButtonPress()
+{
+ m_first = m_current = first();
+
+ m_state = normal;
+ m_select = false;
+
+ recalc();
+
+ view()->part()->document().selection()->setState( VObject::edit );
+ view()->repaintAll( view()->part()->document().selection()->boundingBox() );
+ view()->part()->document().selection()->setState( VObject::selected );
+
+ draw();
+}
+
+bool
+VSelectNodesTool::keyReleased( TQt::Key key )
+{
+ VSelection* selection = view()->part()->document().selection();
+
+ switch( key )
+ {
+ // increase/decrease the handle size
+ case TQt::Key_I:
+ {
+ uint handleSize = selection->handleSize();
+ if( shiftPressed() )
+ selection->setHandleSize( ++handleSize );
+ else if( handleSize > 1 )
+ selection->setHandleSize( --handleSize );
+ }
+ break;
+ case TQt::Key_Delete:
+ if( selection->objects().count() > 0 )
+ view()->part()->addCommand( new VDeleteNodeCmd( &view()->part()->document() ), true );
+ break;
+ default: return false;
+ }
+
+ if( view() )
+ view()->repaintAll( selection->boundingBox() );
+
+ return true;
+}
+
+void
+VSelectNodesTool::mouseButtonRelease()
+{
+ // erase old object:
+ draw();
+
+ VSelection* selection = view()->part()->document().selection();
+
+ KoRect selrect = calcSelRect( last() );
+
+ if( ctrlPressed() )
+ selection->append( selrect.normalize(), false, false );
+ else
+ selection->append( selrect.normalize(), false, true );
+
+ view()->selectionChanged();
+ view()->part()->repaintAllViews();
+ m_state = normal;
+}
+
+void
+VSelectNodesTool::rightMouseButtonRelease()
+{
+ // erase old object:
+ draw();
+
+ VSelection* selection = view()->part()->document().selection();
+
+ KoRect selrect = calcSelRect( last() );
+
+ selection->take( selrect.normalize(), false, false );
+
+ view()->selectionChanged();
+ view()->part()->repaintAllViews();
+ m_state = normal;
+}
+
+void
+VSelectNodesTool::mouseDrag()
+{
+ draw();
+
+ recalc();
+
+ draw();
+}
+
+void
+VSelectNodesTool::mouseDragRelease()
+{
+ if( m_state >= moving )
+ {
+ view()->part()->document().selection()->setState( VObject::selected );
+ VCommand *cmd;
+ TQPtrList<VSegment> segments;
+ KoPoint _last = view()->canvasWidget()->snapToGrid( last() );
+ if( m_state == movingbezier1 || m_state == movingbezier2 )
+ {
+ KoRect selrect = calcSelRect( m_first );
+ segments = view()->part()->document().selection()->getSegments( selrect );
+ cmd = new VTranslateBezierCmd( &view()->part()->document(), segments.at( 0 ),
+ tqRound( ( _last.x() - m_first.x() ) ),
+ tqRound( ( _last.y() - m_first.y() ) ),
+ m_state == movingbezier2 );
+ }
+ else
+ {
+ cmd = new VTranslatePointCmd(
+ &view()->part()->document(),
+ tqRound( ( _last.x() - m_first.x() ) ),
+ tqRound( ( _last.y() - m_first.y() ) ) );
+ }
+ view()->part()->addCommand( cmd, true );
+ m_state = normal;
+ }
+ else
+ {
+ KoPoint fp = m_first;
+ KoPoint lp = last();
+
+ if ( (fabs(lp.x() - fp.x()) + fabs(lp.y()-fp.y())) < 3.0 )
+ {
+ // AK - should take the middle point here
+ fp = last() - KoPoint(8.0, 8.0);
+ lp = last() + KoPoint(8.0, 8.0);
+ }
+
+ // erase old object:
+ draw();
+
+ if( m_select )
+ {
+ view()->part()->document().selection()->append(); // select all
+ view()->part()->document().selection()->append(
+ KoRect( fp.x(), fp.y(), lp.x() - fp.x(), lp.y() - fp.y() ).normalize(),
+ false, true );
+ }
+ else
+ {
+ view()->part()->document().selection()->take(
+ KoRect( fp.x(), fp.y(), lp.x() - fp.x(), lp.y() - fp.y() ).normalize(),
+ false, false );
+ }
+ view()->selectionChanged();
+ view()->part()->repaintAllViews();
+ m_state = normal;
+ }
+}
+
+void
+VSelectNodesTool::cancel()
+{
+ // Erase old object:
+ if ( isDragging() )
+ {
+ draw();
+ m_state = normal;
+ view()->repaintAll( view()->part()->document().selection()->boundingBox() );
+ }
+}
+
+void
+VSelectNodesTool::recalc()
+{
+ if( m_state == dragging )
+ {
+ m_current = last();
+ }
+ else if( m_state == moving || m_state == movingbezier1 || m_state == movingbezier2 )
+ {
+ KoPoint _last = view()->canvasWidget()->snapToGrid( last() );
+ double distx = _last.x() - m_first.x();
+ double disty = _last.y() - m_first.y();
+ // move operation
+ TQWMatrix mat;
+ mat.translate( distx, disty );
+
+ // Copy selected objects and transform:
+ m_objects.clear();
+ VObject* copy;
+
+ VTransformNodes op( mat );
+
+ VObjectListIterator itr = view()->part()->document().selection()->objects();
+ for ( ; itr.current() ; ++itr )
+ {
+ if( itr.current()->state() != VObject::deleted )
+ {
+ copy = itr.current()->clone();
+ copy->setState( VObject::edit );
+ op.visit( *copy );
+ m_objects.append( copy );
+ }
+ }
+ }
+}
+
+void
+VSelectNodesTool::setup( TDEActionCollection *collection )
+{
+ m_action = static_cast<TDERadioAction *>(collection -> action( name() ) );
+
+ if( m_action == 0 )
+ {
+ m_action = new TDERadioAction( i18n( "Select Nodes Tool" ), "14_selectnodes", TQt::SHIFT+TQt::Key_H, this, TQT_SLOT( activate() ), collection, name() );
+ m_action->setToolTip( i18n( "Select Nodes" ) );
+ m_action->setExclusiveGroup( "select" );
+ //m_ownAction = true;
+ }
+}
+
+KoRect
+VSelectNodesTool::calcSelRect( const KoPoint &pos ) const
+{
+ double tolerance = view()->part()->document().selection()->handleSize() / view()->zoom();
+ return KoRect( pos.x() - tolerance, pos.y() - tolerance, 2 * tolerance + 1.0, 2 * tolerance + 1.0 );
+}