void LinePath::setLineColor( const QColor &color ) {
QCanvasLine * line = 0;
uint linewidth = 0;
LineListIt it( m_LineList );
while( ( line = it.current() ) ) {
linewidth = line->pen().width();
line -> setPen( QPen( color, linewidth ) );
++it;
}
LineListIt hit( m_HeadList );
while( ( line = hit.current() ) ) {
linewidth = line->pen().width();
line -> setPen( QPen( color, linewidth ) );
++hit;
}
LineListIt pit( m_ParallelList );
while( ( line = pit.current() ) ) {
linewidth = line->pen().width();
line -> setPen( QPen( color, linewidth ) );
++pit;
}
if( getAssocType() == Uml::at_Aggregation )
if (m_pClearPoly) m_pClearPoly -> setBrush( QBrush( Qt::white ) );
else if( getAssocType() == Uml::at_Composition )
if (m_pClearPoly) m_pClearPoly -> setBrush( QBrush( color ) );
if( m_pCircle ) {
linewidth = m_pCircle->pen().width();
m_pCircle->setPen( QPen(color, linewidth) );
}
}
void LinePath::createHeadLines() {
m_HeadList.clear();
QCanvas * canvas = getCanvas();
switch( getAssocType() ) {
case Uml::at_Activity:
case Uml::at_State:
case Uml::at_Dependency:
case Uml::at_UniAssociation:
case Uml::at_Relationship:
growList(m_HeadList, 2);
break;
case Uml::at_Generalization:
case Uml::at_Realization:
growList(m_HeadList, 3);
m_pClearPoly = new QCanvasPolygon( canvas );
m_pClearPoly -> setVisible( true );
m_pClearPoly -> setBrush( QBrush( Qt::white ) );
m_pClearPoly -> setZ( -1 );
break;
case Uml::at_Composition:
case Uml::at_Aggregation:
growList(m_HeadList, 4);
m_pClearPoly = new QCanvasPolygon( canvas );
m_pClearPoly -> setVisible( true );
if( getAssocType() == Uml::at_Aggregation )
m_pClearPoly -> setBrush( QBrush( Qt::white ) );
else
m_pClearPoly -> setBrush( QBrush( getLineColor() ) );
m_pClearPoly -> setZ( -1 );
break;
case Uml::at_Containment:
growList(m_HeadList, 1);
if (!m_pCircle) {
m_pCircle = new Circle( canvas, 6 );
m_pCircle->show();
m_pCircle->setPen( QPen( getLineColor(), getLineWidth() ) );
}
break;
default:
break;
}
m_bHeadCreated = true;
}
void LinePath::setAssociation(AssociationWidget * association ) {
if( !association )
return;
cleanup();
m_pAssociation = association;
createHeadLines();
if( getAssocType() == Uml::at_Coll_Message )
setupParallelLine();
UMLView * view = (UMLView *)m_pAssociation -> parent();
connect( view, SIGNAL( sigColorChanged( Uml::IDType ) ), this, SLOT( slotLineColorChanged( Uml::IDType ) ) );
connect( view, SIGNAL( sigLineWidthChanged( Uml::IDType ) ), this, SLOT( slotLineWidthChanged( Uml::IDType ) ) );
}
void LinePath::update() {
if (getAssocType() == Uml::at_Coll_Message) {
if (m_bParallelLineCreated) {
calculateParallelLine();
updateParallelLine();
} else
setupParallelLine();
} else if (m_bHeadCreated) {
calculateHead();
updateHead();
} else {
createHeadLines();
}
}
/**
* This will setup the class ready to display the line correctly.
* This MUST be called before you can use this class.
*/
void AssociationLine::setAssociation(AssociationWidget * association)
{
if( !association )
return;
cleanup();
m_pAssociation = association;
createHeadLines();
createSubsetSymbol();
if( getAssocType() == Uml::AssociationType::Coll_Message )
setupParallelLine();
UMLView * view = (UMLView *)m_pAssociation->parent();
if (view) {
connect(view, SIGNAL(sigColorChanged(Uml::IDType)), this, SLOT(slotLineColorChanged(Uml::IDType)));
connect(view, SIGNAL(sigLineWidthChanged(Uml::IDType)), this, SLOT(slotLineWidthChanged(Uml::IDType)));
}
else {
uWarning() << "Parent is null. Can not connect SIGNAL/SLOT.";
}
}
/**
* Calls a group of methods to update the line. Used to save you calling multiple methods.
*/
void AssociationLine::update()
{
if (getAssocType() == Uml::AssociationType::Coll_Message) {
if (m_bParallelLineCreated) {
calculateParallelLine();
updateParallelLine();
} else
setupParallelLine();
} else if (m_bHeadCreated) {
calculateHead();
updateHead();
} else {
createHeadLines();
}
if ( m_bSubsetSymbolCreated ) {
updateSubsetSymbol();
} else {
createSubsetSymbol();
}
}
void LinePath::updateHead() {
int count = m_HeadList.count();
QCanvasLine * line = 0;
switch( getAssocType() ) {
case Uml::at_State:
case Uml::at_Activity:
case Uml::at_UniAssociation:
case Uml::at_Dependency:
if( count < 2)
return;
line = m_HeadList.at( 0 );
line -> setPoints( m_EgdePoint.x(), m_EgdePoint.y(), m_ArrowPointA.x(), m_ArrowPointA.y() );
line = m_HeadList.at( 1 );
line -> setPoints( m_EgdePoint.x(), m_EgdePoint.y(), m_ArrowPointB.x(), m_ArrowPointB.y() );
break;
case Uml::at_Relationship:
if (count < 2) {
return;
}
{
int xoffset = 0;
int yoffset = 0;
if( m_DockRegion == TopBottom )
xoffset = 8;
else
yoffset = 8;
line = m_HeadList.at( 0 );
line->setPoints( m_PointArray[2].x(), m_PointArray[2].y(),
m_PointArray[0].x()-xoffset, m_PointArray[0].y()-yoffset );
line = m_HeadList.at( 1 );
line->setPoints( m_PointArray[2].x(), m_PointArray[2].y(),
m_PointArray[0].x()+xoffset, m_PointArray[0].y()+yoffset );
}
case Uml::at_Generalization:
case Uml::at_Realization:
if( count < 3)
return;
line = m_HeadList.at( 0 );
line -> setPoints( m_EgdePoint.x(), m_EgdePoint.y(), m_ArrowPointA.x(), m_ArrowPointA.y() );
line = m_HeadList.at( 1 );
line -> setPoints( m_EgdePoint.x(), m_EgdePoint.y(), m_ArrowPointB.x(), m_ArrowPointB.y() );
line = m_HeadList.at( 2 );
line -> setPoints( m_ArrowPointA.x(), m_ArrowPointA.y(), m_ArrowPointB.x(), m_ArrowPointB.y() );
m_pClearPoly -> setPoints( m_PointArray );
break;
case Uml::at_Composition:
case Uml::at_Aggregation:
if( count < 4)
return;
line = m_HeadList.at( 0 );
line -> setPoints( m_PointArray[ 0 ].x(), m_PointArray[ 0 ].y(), m_PointArray[ 1 ].x(), m_PointArray[ 1 ].y() );
line = m_HeadList.at( 1 );
line -> setPoints( m_PointArray[ 1 ].x(), m_PointArray[ 1 ].y(), m_PointArray[ 2 ].x(), m_PointArray[ 2 ].y() );
line = m_HeadList.at( 2 );
line -> setPoints( m_PointArray[ 2 ].x(), m_PointArray[ 2 ].y(), m_PointArray[ 3 ].x(), m_PointArray[ 3 ].y() );
line = m_HeadList.at( 3 );
line -> setPoints( m_PointArray[ 3 ].x(), m_PointArray[ 3 ].y(), m_PointArray[ 0 ].x(), m_PointArray[ 0 ].y() );
m_pClearPoly -> setPoints( m_PointArray );
break;
case Uml::at_Containment:
if (count < 1)
return;
line = m_HeadList.at( 0 );
line->setPoints( m_PointArray[ 1 ].x(), m_PointArray[ 1 ].y(),
m_PointArray[ 3 ].x(), m_PointArray[ 3 ].y() );
m_pCircle -> setX( m_MidPoint.x() );
m_pCircle -> setY( m_MidPoint.y() );
break;
default:
break;
}
}
void LinePath::calculateHead() {
uint size = m_LineList.count();
QPoint farPoint;
int halfLength = 10;
double arrowAngle = 0.2618; // 0.5 * atan(sqrt(3.0) / 3.0) = 0.2618
Uml::Association_Type at = getAssocType();
bool diamond = (at == Uml::at_Aggregation || at == Uml::at_Composition);
if (diamond || at == Uml::at_Containment) {
farPoint = getPoint(1);
m_EgdePoint = getPoint(0);
if (diamond) {
arrowAngle *= 1.5; // wider
halfLength += 1; // longer
} else {
// Containment has a circle-plus symbol at the
// containing object. What we are tweaking here
// is the perpendicular line through the circle
// (i.e. the horizontal line of the plus sign if
// the objects are oriented north/south)
arrowAngle *= 2.5; // wider
halfLength -= 4; // shorter
}
} else {
farPoint = getPoint(size - 1);
m_EgdePoint = getPoint(size);
// We have an arrow.
arrowAngle *= 2.0; // wider
halfLength += 3; // longer
}
int xa = farPoint.x();
int ya = farPoint.y();
int xb = m_EgdePoint.x();
int yb = m_EgdePoint.y();
double deltaX = xb - xa;
double deltaY = yb - ya;
double hypotenuse = sqrt(deltaX*deltaX + deltaY*deltaY); // the length
double slope = atan2(deltaY, deltaX); //slope of line
double arrowSlope = slope + arrowAngle;
double cosx, siny;
if (hypotenuse < 1.0e-6) {
cosx = 1.0;
siny = 0.0;
} else {
cosx = halfLength * deltaX/hypotenuse;
siny = halfLength * deltaY/hypotenuse;
}
m_ArrowPointA.setX( (int)rint(xb - halfLength * cos(arrowSlope)) );
m_ArrowPointA.setY( (int)rint(yb - halfLength * sin(arrowSlope)) );
arrowSlope = slope - arrowAngle;
m_ArrowPointB.setX( (int)rint(xb - halfLength * cos(arrowSlope)) );
m_ArrowPointB.setY( (int)rint(yb - halfLength * sin(arrowSlope)) );
if(xa > xb)
cosx = cosx > 0 ? cosx : cosx * -1;
else
cosx = cosx > 0 ? cosx * -1: cosx;
if(ya > yb)
siny = siny > 0 ? siny : siny * -1;
else
siny = siny > 0 ? siny * -1 : siny;
m_MidPoint.setX( (int)rint(xb + cosx) );
m_MidPoint.setY( (int)rint(yb + siny) );
m_PointArray.setPoint(0, m_EgdePoint);
m_PointArray.setPoint(1, m_ArrowPointA);
if( getAssocType() == Uml::at_Realization ||
getAssocType() == Uml::at_Generalization ) {
m_PointArray.setPoint( 2, m_ArrowPointB );
m_PointArray.setPoint( 3, m_EgdePoint );
} else {
QPoint diamondFarPoint;
diamondFarPoint.setX( (int)rint(xb + cosx * 2) );
diamondFarPoint.setY( (int)rint(yb + siny * 2) );
m_PointArray.setPoint(2, diamondFarPoint);
m_PointArray.setPoint(3, m_ArrowPointB);
}
}
QPen LinePath::getPen() {
Uml::Association_Type type = getAssocType();
if( type == Uml::at_Dependency || type == Uml::at_Realization || type == Uml::at_Anchor )
return QPen( getLineColor(), getLineWidth(), Qt::DashLine );
return QPen( getLineColor(), getLineWidth() );
}