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#include "multiplexer.h"
#include <cmath>
using namespace coreview;
//////////////////////
#define WIDTH 10
#define HEIGHT 20
#define GAP 8
#define PENW 1
//////////////////////
Multiplexer::Multiplexer(unsigned size) {
this->size = size;
seton = 0;
ctlfrom = false;
con_ctl = new Connector(M_PI_2);
con_out = new Connector(M_PI);
con_in = new Connector*[size];
for (unsigned i = 0; i < size; i++)
con_in[i] = new Connector(0);
setPos(x(), y()); // Set connectors possitions
}
Multiplexer::~Multiplexer() {
delete con_ctl;
delete con_out;
for (unsigned i = 0; i < size; i++)
delete con_in[i];
delete con_in;
}
#define C_HEIGHT (HEIGHT + (GAP * (size -1 )))
QRectF Multiplexer::boundingRect() const {
return QRectF(-PENW / 2, -PENW / 2, WIDTH + PENW, C_HEIGHT + PENW);
}
void Multiplexer::paint(QPainter *painter, const QStyleOptionGraphicsItem *option __attribute__((unused)), QWidget *widget __attribute__((unused))) {
painter->setPen(QColor(200, 200, 200));
if (seton > 0 && seton <= size)
painter->drawLine(0, (HEIGHT / 2) + ((seton - 1) * GAP), WIDTH, C_HEIGHT / 2);
painter->setPen(QColor(0, 0, 0));
const QPointF poly[] = {
QPointF(0, 0),
QPointF(WIDTH, WIDTH / 2),
QPointF(WIDTH, C_HEIGHT - (WIDTH / 2)),
QPointF(0, C_HEIGHT)
};
painter->drawPolygon(poly, sizeof(poly) / sizeof(QPointF));
}
void Multiplexer::setPos(qreal x, qreal y) {
QGraphicsItem::setPos(x, y);
if (ctlfrom)
con_ctl->setPos(x + (WIDTH / 2), y + (WIDTH / 4));
else
con_ctl->setPos(x + (WIDTH / 2), y + C_HEIGHT - (WIDTH / 4));
con_out->setPos(x + WIDTH, y + (C_HEIGHT / 2));
for (unsigned i = 0; i < size; i++)
con_in[i]->setPos(x, y + (HEIGHT / 2) + (i * GAP));
}
const Connector *Multiplexer::connector_ctl() const {
return con_ctl;
}
const Connector *Multiplexer::connector_out() const {
return con_out;
}
const Connector *Multiplexer::connector_in(unsigned i) const {
SANITY_ASSERT(i < size, "Multiplexer: requested out of range input connector");
return con_in[i];
}
void Multiplexer::set(unsigned i) {
seton = i;
update();
}
void Multiplexer::setCtl(bool up) {
ctlfrom = up;
setPos(x(), y()); // Update connectors
}
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