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505 lines
12 KiB
505 lines
12 KiB
/* This file is part of the KDE project
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Copyright (C) 2001, 2002, 2003 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 <qcursor.h>
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#include <qevent.h>
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#include <qlabel.h>
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#include <klocale.h>
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#include <karbon_part.h>
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#include <karbon_view.h>
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#include <core/vcolor.h>
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#include <core/vcomposite.h>
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#include <core/vfill.h>
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#include <core/vstroke.h>
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#include <core/vglobal.h>
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#include <core/vcursor.h>
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#include <render/vpainter.h>
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#include <render/vpainterfactory.h>
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#include "vpolylinetool.h"
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#include <commands/vshapecmd.h>
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#include <commands/vcommand.h>
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#include <widgets/vcanvas.h>
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VPolylineTool::VPolylineTool( KarbonView *view )
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: VTool( view, "tool_polyline" )
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{
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m_bezierPoints.setAutoDelete( true );
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registerTool( this );
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m_crossCursor = new QCursor( VCursor::createCursor( VCursor::CrossHair ) );
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}
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VPolylineTool::~VPolylineTool()
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{
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delete m_crossCursor;
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}
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QString
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VPolylineTool::contextHelp()
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{
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QString s = i18n( "<qt><b>Polyline tool:</b><br>" );
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s += i18n( "- <i>Click</i> to add a node and <i>drag</i> to set its bezier vector.<br>" );
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s += i18n( "- Press <i>Ctrl</i> while dragging to edit the previous bezier vector.<br>" );
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s += i18n( "- Press <i>Shift</i> while dragging to change the curve in a straight line.<br>" );
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s += i18n( "- Press <i>Backspace</i> to cancel the last curve.<br>" );
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s += i18n( "- Press <i>Esc</i> to cancel the whole polyline.<br>" );
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s += i18n( "- Press <i>Enter</i> or <i>double click</i> to end the polyline.</qt>" );
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return s;
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}
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void
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VPolylineTool::activate()
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{
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VTool::activate();
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view()->statusMessage()->setText( i18n( "Polyline Tool" ) );
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view()->setCursor( *m_crossCursor );
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m_bezierPoints.clear();
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m_close = false;
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connect( view()->part()->commandHistory(), SIGNAL(commandExecuted()), this, SLOT(commandExecuted()) );
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}
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void
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VPolylineTool::initializePath( VPath &path )
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{
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KoPoint* p1 = m_bezierPoints.first();
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KoPoint* p2;
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KoPoint* p3;
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KoPoint* p4;
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path.moveTo( *p1 );
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while(
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( p2 = m_bezierPoints.next() ) &&
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( p3 = m_bezierPoints.next() ) &&
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( p4 = m_bezierPoints.next() ) )
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{
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if ( *p1 == *p2 )
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if ( *p3 == *p4 )
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path.lineTo( *p4 );
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else
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//polyline->curve1To( *p3, *p4 );
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path.curveTo( *p3, *p4, *p4 );
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else
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if ( *p3 == *p4 )
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//polyline->curve2To( *p2, *p4 );
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path.curveTo( *p2, *p2, *p4 );
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else
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path.curveTo( *p2, *p3, *p4 );
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p1 = p4;
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}
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}
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void
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VPolylineTool::createObject()
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{
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VPath* polyline = 0L;
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if( m_bezierPoints.count() > 2 )
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{
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polyline = new VPath( 0L );
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if( polyline )
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{
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initializePath( *polyline );
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if( m_close )
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polyline->close();
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VShapeCmd* cmd = new VShapeCmd(
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&view()->part()->document(),
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i18n( "Polyline" ),
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polyline,
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"14_polyline" );
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view()->part()->addCommand( cmd, true );
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}
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}
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m_bezierPoints.clear();
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m_close = false;
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}
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void
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VPolylineTool::deactivate()
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{
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m_bezierPoints.removeLast();
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m_bezierPoints.removeLast();
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createObject();
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disconnect( view()->part()->commandHistory(), SIGNAL(commandExecuted()), this, SLOT(commandExecuted()) );
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}
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void
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VPolylineTool::draw()
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{
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VPainter* painter = view()->painterFactory()->editpainter();
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painter->setRasterOp( Qt::NotROP );
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if( m_bezierPoints.count() > 2 )
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{
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VPath polyline( 0L );
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initializePath( polyline );
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polyline.setState( VObject::edit );
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polyline.draw( painter, &polyline.boundingBox() );
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}
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}
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void
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VPolylineTool::drawBezierVector( KoPoint& start, KoPoint& end )
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{
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VPainter* painter = view()->painterFactory()->editpainter();
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painter->save();
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float zoomFactor = view()->zoom();
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painter->setRasterOp( Qt::NotROP );
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painter->newPath();
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/* VStroke stroke( Qt::blue, 0L, 1.0 );
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QValueList<float> array;
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array << 2.0 << 3.0;
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stroke.dashPattern().setArray( array );*/
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painter->setPen( Qt::DotLine /*stroke*/ );
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painter->setBrush( Qt::NoBrush );
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painter->moveTo( start );
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painter->lineTo( end );
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painter->strokePath();
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painter->setRasterOp( Qt::XorROP );
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painter->newPath();
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painter->setPen( Qt::yellow );
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float width = 2.0;
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painter->moveTo( KoPoint(
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end.x() - width / zoomFactor,
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end.y() - width / zoomFactor ) );
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painter->lineTo( KoPoint(
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end.x() + width / zoomFactor,
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end.y() - width / zoomFactor ) );
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painter->lineTo( KoPoint(
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end.x() + width / zoomFactor,
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end.y() + width / zoomFactor ) );
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painter->lineTo( KoPoint(
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end.x() - width / zoomFactor,
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end.y() + width / zoomFactor ) );
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painter->lineTo( KoPoint(
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end.x() - width / zoomFactor,
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end.y() - width / zoomFactor ) );
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painter->strokePath();
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painter->restore();
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}
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void
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VPolylineTool::mouseMove()
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{
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if( m_bezierPoints.count() != 0 )
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{
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KoPoint _last = view()->canvasWidget()->snapToGrid( last() );
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draw();
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m_bezierPoints.removeLast();
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m_bezierPoints.removeLast();
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m_bezierPoints.append( new KoPoint( _last ) );
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m_bezierPoints.append( new KoPoint( _last ) );
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draw();
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}
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}
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void
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VPolylineTool::mouseButtonPress()
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{
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KoPoint _last = view()->canvasWidget()->snapToGrid( last() );
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if( m_bezierPoints.count() != 0 )
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{
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draw();
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m_bezierPoints.removeLast();
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m_bezierPoints.removeLast();
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m_bezierPoints.append( new KoPoint( _last ) );
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}
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m_lastVectorEnd = m_lastVectorStart = _last;
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m_bezierPoints.append( new KoPoint( _last ) );
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m_bezierPoints.append( new KoPoint( _last ) );
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drawBezierVector( m_lastVectorStart, m_lastVectorEnd );
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draw();
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}
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void
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VPolylineTool::mouseButtonRelease()
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{
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KoPoint _last = view()->canvasWidget()->snapToGrid( last() );
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if( m_bezierPoints.count() == 2 )
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{
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drawBezierVector( m_lastVectorStart, m_lastVectorEnd );
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m_bezierPoints.removeLast();
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m_bezierPoints.append( new KoPoint( _last ) );
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VPainter* painter = view()->painterFactory()->editpainter();
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painter->save();
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painter->setZoomFactor( view()->zoom() );
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painter->setRasterOp( Qt::XorROP );
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VStroke stroke( Qt::yellow, 0L, 1.0 );
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painter->setPen( stroke );
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painter->setBrush( Qt::yellow );
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painter->newPath();
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painter->drawNode( m_lastVectorStart, 2 );
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painter->strokePath();
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painter->restore();
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}
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else
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{
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drawBezierVector( m_lastVectorStart, m_lastVectorEnd );
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draw();
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m_bezierPoints.removeLast();
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KoPoint* p = new KoPoint( *m_bezierPoints.last() );
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m_bezierPoints.removeLast();
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KoPoint* b = new KoPoint( *m_bezierPoints.last() );
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m_bezierPoints.removeLast();
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if( shiftPressed() )
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{
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m_bezierPoints.removeLast();
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m_bezierPoints.append( new KoPoint( *m_bezierPoints.last() ) );
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m_bezierPoints.append( new KoPoint( *p ) );
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m_bezierPoints.append( new KoPoint( *p ) );
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m_bezierPoints.append( new KoPoint( *p ) );
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m_lastVectorStart = m_lastVectorEnd = *p;
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}
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else if( ctrlPressed() )
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{
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m_bezierPoints.removeLast();
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m_lastVectorStart = *m_bezierPoints.last();
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m_bezierPoints.append( new KoPoint( _last ) );
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m_bezierPoints.append( new KoPoint( *b ) );
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m_bezierPoints.append( new KoPoint( *p ) );
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m_bezierPoints.append( new KoPoint( *p - ( *b - *p ) ) );
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m_lastVectorEnd = _last;
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}
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else
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{
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m_bezierPoints.append( new KoPoint( _last ) );
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m_bezierPoints.append( new KoPoint( *p ) );
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m_bezierPoints.append( new KoPoint( *p - ( _last - *p ) ) );
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m_lastVectorStart = *p;
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m_lastVectorEnd = _last;
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}
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if( m_bezierPoints.count() > 2 && p->isNear( *m_bezierPoints.first(), 3 ) )
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{
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m_bezierPoints.append( new KoPoint( _last ) );
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m_close = true;
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createObject();
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return;
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}
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}
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m_bezierPoints.append( new KoPoint( _last ) );
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m_bezierPoints.append( new KoPoint( _last ) );
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draw();
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}
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void
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VPolylineTool::rightMouseButtonRelease()
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{
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// end line without adding new points
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m_bezierPoints.removeLast();
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m_bezierPoints.removeLast();
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createObject();
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}
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void
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VPolylineTool::mouseButtonDblClick()
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{
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createObject();
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}
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void
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VPolylineTool::mouseDrag()
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{
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KoPoint _last = view()->canvasWidget()->snapToGrid( last() );
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if( m_bezierPoints.count() == 2 )
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{
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drawBezierVector( m_lastVectorStart, m_lastVectorEnd );
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m_bezierPoints.removeLast();
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m_bezierPoints.append( new KoPoint( _last ) );
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m_lastVectorEnd = _last;
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drawBezierVector( m_lastVectorStart, m_lastVectorEnd );
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}
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else
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{
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drawBezierVector( m_lastVectorStart, m_lastVectorEnd );
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draw();
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m_bezierPoints.removeLast();
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KoPoint* p = new KoPoint( *m_bezierPoints.last() );
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m_bezierPoints.removeLast();
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KoPoint* b = new KoPoint( *m_bezierPoints.last() );
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m_bezierPoints.removeLast();
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if( shiftPressed() )
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{
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m_bezierPoints.removeLast();
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m_bezierPoints.append( new KoPoint( *m_bezierPoints.last() ) );
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m_bezierPoints.append( new KoPoint( *p ) );
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m_bezierPoints.append( new KoPoint( *p ) );
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m_bezierPoints.append( new KoPoint( *p ) );
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m_lastVectorStart = m_lastVectorEnd = *p;
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}
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else if( ctrlPressed() )
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{
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m_bezierPoints.removeLast();
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m_lastVectorStart = *m_bezierPoints.last();
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m_bezierPoints.append( new KoPoint( _last ) );
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m_bezierPoints.append( new KoPoint( *b ) );
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m_bezierPoints.append( new KoPoint( *p ) );
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m_bezierPoints.append( new KoPoint( *p - ( *b - *p ) ) );
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m_lastVectorEnd = _last;
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}
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else
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{
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m_bezierPoints.append( new KoPoint( _last ) );
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m_bezierPoints.append( new KoPoint( *p ) );
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m_bezierPoints.append( new KoPoint( *p - ( _last - *p ) ) );
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m_lastVectorStart = *p;
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m_lastVectorEnd = _last;
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}
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draw();
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drawBezierVector( m_lastVectorStart, m_lastVectorEnd );
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}
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}
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void
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VPolylineTool::mouseDragRelease()
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{
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mouseButtonRelease();
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}
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void
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VPolylineTool::mouseDragShiftPressed()
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{
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}
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void
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VPolylineTool::mouseDragCtrlPressed()
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{
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// Moves the mouse to the other bezier vector position.
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if( m_bezierPoints.count() > 3 )
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{
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KoPoint p;
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p = *m_bezierPoints.at( m_bezierPoints.count() - 4) - *m_bezierPoints.at( m_bezierPoints.count() - 3 );
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view()->setPos( p );
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}
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}
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void
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VPolylineTool::mouseDragShiftReleased()
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{
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}
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void
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VPolylineTool::mouseDragCtrlReleased()
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{
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if( m_bezierPoints.count() > 3 )
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{
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KoPoint p;
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p = *m_bezierPoints.at( m_bezierPoints.count() - 3) - *m_bezierPoints.at( m_bezierPoints.count() - 4 );
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view()->setPos( p );
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}
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}
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void
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VPolylineTool::cancel()
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{
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draw();
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m_bezierPoints.clear();
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}
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void
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VPolylineTool::cancelStep()
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{
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draw();
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if ( m_bezierPoints.count() > 6 )
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{
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m_bezierPoints.removeLast();
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m_bezierPoints.removeLast();
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m_bezierPoints.removeLast();
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KoPoint p1 = *m_bezierPoints.last();
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m_bezierPoints.removeLast();
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m_bezierPoints.removeLast();
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m_bezierPoints.append( new KoPoint( p1 ) );
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m_bezierPoints.append( new KoPoint( p1 ) );
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view()->setPos( p1 );
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}
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else
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{
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m_bezierPoints.clear();
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}
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draw();
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}
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void
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VPolylineTool::accept()
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{
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activate();
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}
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void
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VPolylineTool::setup( KActionCollection *collection )
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{
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m_action = static_cast<KRadioAction *>(collection -> action( name() ) );
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if( m_action == 0 )
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{
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KShortcut shortcut( Qt::Key_Plus );
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shortcut.append( KShortcut( Qt::Key_F9 ) );
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m_action = new KRadioAction( i18n( "Polyline Tool" ), "14_polyline", shortcut, this, SLOT( activate() ), collection, name() );
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m_action->setToolTip( i18n( "Polyline" ) );
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m_action->setExclusiveGroup( "freehand" );
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//m_ownAction = true;
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}
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}
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void
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VPolylineTool::commandExecuted()
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{
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cancel();
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}
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#include "vpolylinetool.moc"
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