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/*
* Kivio - Visual Modelling and Flowcharting
* Copyright (C) 2000-2001 theKompany.com & Dave Marotti
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "kivio_common.h"
#include "kivio_connector_point.h"
#include "kivio_connector_target.h"
#include "kivio_stencil.h"
KivioConnectorPoint::KivioConnectorPoint()
{
m_pTarget = 0L;
m_pStencil = 0L;
m_targetId = -1;
m_connectable = true;
}
KivioConnectorPoint::KivioConnectorPoint( KivioStencil *pParent, bool conn )
{
m_pTarget = 0L;
m_pStencil = pParent;
m_targetId = -1;
m_connectable = conn;
}
KivioConnectorPoint::~KivioConnectorPoint()
{
if( m_pTarget )
{
m_pTarget->removeConnectorPointFromList( this );
m_pTarget = 0L;
}
m_pStencil = 0L;
}
/**
* Sets the target to a value.
*
* @param pTarget The target to connect to
*
* This sets the KivioConnectorTarget we are attached to. In addition to
* setting the pointer, it also tells the target to add this as a connected
* point.
*/
void KivioConnectorPoint::setTarget( KivioConnectorTarget *pTarget )
{
if( m_connectable == false )
{
return;
}
if( m_pTarget )
{
m_pTarget->removeConnectorPointFromList( this );
}
m_pTarget = pTarget;
m_pos.setX(pTarget->x());
m_pos.setY(pTarget->y());
m_pTarget->addConnectorPointToList( this );
}
/**
* Sets the x coordinate.
*
* @param newX The new value
* @param updateStencil Whether or not the stencil's geometry should be updated (def=true)
*
* Sets the X coordinate to a new value, and optionally
* updates the stencil's geometry if updateStencil is true.
*/
void KivioConnectorPoint::setX( double newX, bool updateStencil )
{
double oldX = m_pos.x();
m_pos.setX(newX);
if( updateStencil && m_pStencil )
m_pStencil->updateConnectorPoints(this, oldX, m_pos.y());
}
/**
* Sets the y coordinate.
*
* @param newY The new value
* @param updateStencil Whether or not the stencil's geometry should be updated (def=true)
*
* Sets the Y coordinate to a new value, and optionally
* updates the stencil's geometry if updateStencil is true.
*/
void KivioConnectorPoint::setY( double newY, bool updateStencil )
{
double oldY = m_pos.y();
m_pos.setY(newY);
if( updateStencil && m_pStencil )
m_pStencil->updateConnectorPoints(this, m_pos.x(), oldY);
}
/**
* Sets the coordinates.
*
* @param newX The new x value
* @param newY The new y value
* @param updateStencil Whether or not the stencil's geometry should be updated (def=true)
*
* Sets the X & Y coordinates to new values, and optionally
* updates the stencil's geometry if updateStencil is true.
*/
void KivioConnectorPoint::setPosition( double newX, double newY, bool updateStencil )
{
double oldX = m_pos.x();
double oldY = m_pos.y();
m_pos.setCoords(newX, newY);
if( updateStencil && m_pStencil )
m_pStencil->updateConnectorPoints(this, oldX, oldY);
}
/**
* Disconnects from the target, with optional behavior.
*
* @param removeFromTargetList Whether we should tell the target to remove us from it's list or not. (Default=true).
*
* Call this function if you want this connector to disconnect itself from it's target. If removeFromTargetList is
* true, then we call KivioConnectorTarget::removeConnectorPointFromList() which causes the target to look for
* us in his list of connections and remove us.
*/
void KivioConnectorPoint::disconnect( bool removeFromTargetList )
{
if( m_pTarget )
{
if( removeFromTargetList == true )
m_pTarget->removeConnectorPointFromList(this);
m_pTarget = 0L;
m_targetId = -1;
}
}
/**
* Loads this object from an XML file.
*
* @param e The TQDomElement to load from.
*
* This will load the necessary values from an XML file.
*/
bool KivioConnectorPoint::loadXML( const TQDomElement &e )
{
m_pos.setX(XmlReadFloat( e, "x", 1.0f ));
m_pos.setY(XmlReadFloat( e, "y", 1.0f ));
m_targetId = XmlReadInt( e, "targetId", -1 );
m_connectable = (bool)XmlReadInt( e, "connectable", (int)true );
return true;
}
/**
* Saves this object to an XML file.
*
* @param doc The TQDomDocument to save to.
*
* This creates a new TQDomElement and saves its data to it.
*
* @returns The new element created and saved to.
*/
TQDomElement KivioConnectorPoint::saveXML( TQDomDocument &doc )
{
TQDomElement e = doc.createElement("KivioConnectorPoint");
XmlWriteFloat( e, "x", m_pos.x() );
XmlWriteFloat( e, "y", m_pos.y() );
XmlWriteInt( e, "connectable", (int)m_connectable );
if( m_targetId != -1 )
XmlWriteInt( e, "targetId", m_targetId );
return e;
}
void KivioConnectorPoint::moveBy( double _x, double _y, bool updateStencil )
{
m_pos += KoPoint(_x, _y);
if( updateStencil && m_pStencil )
m_pStencil->updateConnectorPoints(this, _x, _y);
}
bool KivioConnectorPoint::isConnected()
{
return (m_pTarget != 0L);
}
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