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#include "latch.h"
using namespace coreview;
//////////////////////
#define WIDTH 10
#define PENW 1
//////////////////////
Latch::Latch(QtMipsMachine *machine, qreal height) {
this->height = height;
connect(machine, SIGNAL(tick()), this, SLOT(tick()));
}
QRectF Latch::boundingRect() const {
return QRectF(-PENW / 2, -PENW / 2, WIDTH + PENW, height + PENW);
}
void Latch::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) {
painter->drawRect(0, 0, WIDTH, height);
// Now tick rectangle
const QPointF tickPolygon[] = {
QPointF(0, 0),
QPointF(WIDTH/2, WIDTH/2),
QPointF(WIDTH, 0)
};
painter->drawPolygon(tickPolygon, 3);
}
void Latch::setPos(qreal x, qreal y) {
QGraphicsObject::setPos(x, y);
for (unsigned i = 0; i < connectors.size(); i++) {
connectors[i].in->setPos(x, y + connectors_off[i]);
connectors[i].out->setPos(x + WIDTH, y + connectors_off[i]);
}
}
struct Latch::ConnectorPair Latch::new_connector(qreal cy) {
SANITY_ASSERT(cy < height, "Latch: Trying to create connector outside of latch height");
ConnectorPair cp;
cp.in = new Connector();
cp.out = new Connector();
connectors.append(cp);
connectors_off.append(cy);
setPos(x(), y()); // Update connectors position
return cp;
}
void Latch::tick() {
// TODO animate
}
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