bool QGILineBinder::serialize( S11nNode & dest ) const
{
using namespace s11n::qt;
if( ! this->Serializable::serialize( dest ) ) return false;
if( ! impl->ends.first || ! impl->ends.second ) return false;
// We must ensure that the "pos" property is synced, but we have
// to violate constness to do it :/
QGILineBinder * ncthis = const_cast<QGILineBinder*>( this );
ncthis->setProperty( "pos", this->pos() );
if( this->metaObject()->propertyCount() )
{
S11nNode & pr( s11n::create_child( dest, "properties" ) );
if( ! QObjectProperties_s11n()( pr, *this ) ) return false;
}
QObjectProperties_s11n proxy;
QObject const * qobj = impl->ends.first; // kludge to avoid an ambiguity
if( ! proxy(s11n::create_child( dest, "first" ), *qobj) ) return false;
qobj = impl->ends.second;
if( ! proxy(s11n::create_child( dest, "second" ), *qobj) ) return false;
/**
To avoid offset calculations, we save the absolute LineNode
positions instead of our m_pts member. This still has the problem
that if the hard-coded size of the LineNodes changes between
serializations, we'll place the line slightly differently
than before when we load.
*/
Impl::PointPair pts( impl->ends.first->pos(), impl->ends.second->pos() );
return s11n::serialize_subnode( dest, "pos", pts );
}
void MenuHandlerLineNode::doMenu( QGILineNode *gvi, QGraphicsSceneContextMenuEvent * ev )
{
ev->accept();
QString label("Line...");
QMenu * menu = new QMenu(label);
menu->addAction(label)->setEnabled(false);
menu->addAction(QIcon(":/QBoard/icon/button_cancel.png"), QString("Destroy Line"),
this,SLOT(scheduleLineDestruction()) );
menu->addSeparator();
//QObject::connect( this, SIGNAL(aboutToShow()), this, SLOT(updateView()) );
QGILineBinder * line = dynamic_cast<QGILineBinder*>( gvi->parentItem() );
if( ! line )
{ // fixme: report an error here.
delete menu;
return;
}
impl->line = line;
impl->node = gvi;
QMenu * menuLine = menu->addMenu("Line");
menuLine->addMenu( QObjectPropertyMenu::makeColorMenu(line, "color", "alpha" ) );
menuLine->addMenu( QObjectPropertyMenu::makePenStyleMenu(line, "style" ) );
menuLine->addMenu( QObjectPropertyMenu::makeNumberListMenu("Width", line, "width",1,10,1) );
QMenu * mdot = QObjectPropertyMenu::makeColorMenu( gvi, "color" );
mdot->setTitle("Dot");
menu->addMenu( mdot );
QMenu * menuArrows = menu->addMenu("Arrows");
QAction * act = menuArrows->addAction("Toggle arrows",line, SLOT(toggleArrows()) );
QVariant var( line->property("drawArrows") );
int doArrow = var.isValid() ? var.toInt() : 0;
if( doArrow )
{
act->setCheckable(true);
act->setChecked(true);
}
menuArrows->addMenu( QObjectPropertyMenu::makeNumberListMenu("Size", line, "arrowSize",8,24,2) );
menu->addSeparator();
menu->addAction(QIcon(":/QBoard/icon/help.png"),"Help...", this, SLOT(showHelp()) );
menu->exec( ev->screenPos() );
delete menu;
// Reminder: do not act on gvi or line after menu->exec(), as the exec might have
// destroyed them! This means we can't do obj->update() to update their appearance
// from here. We use QObject::event() in gvi/line to catch the updates instead.
}
~Impl()
{
if( delLine )
{
line->destroyLine();
}
}
void MainWindowImpl::addLine()
{
QGILineNode * ln = new QGILineNode;
QGILineNode * rn = new QGILineNode;
ln->setProperty("color", "#ffff00");
rn->setProperty("color", "#ff0000");
rn->setPos(50,50);
ln->setPos(50,100);
QGILineBinder * ed = new QGILineBinder(ln,rn);
#if 0
ed->setProperty("lineColor", "#00ffff");
#endif
ed->setProperty("lineWidth", 2 );
ed->setProperty("lineStyle", Qt::DotLine );
impl->gstate.addItem(ed,true);
}