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// SPDX-License-Identifier: GPL-2.0+
/*******************************************************************************
* QtMips - MIPS 32-bit Architecture Subset Simulator
*
* Implemented to support following courses:
*
* B35APO - Computer Architectures
* https://cw.fel.cvut.cz/wiki/courses/b35apo
*
* B4M35PAP - Advanced Computer Architectures
* https://cw.fel.cvut.cz/wiki/courses/b4m35pap/start
*
* Copyright (c) 2017-2019 Karel Koci<cynerd@email.cz>
* Copyright (c) 2019 Pavel Pisa <pisa@cmp.felk.cvut.cz>
*
* Faculty of Electrical Engineering (http://www.fel.cvut.cz)
* Czech Technical University (http://www.cvut.cz/)
*
* 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 "multiplexer.h"
#include <cmath>
using namespace coreview;
//////////////////////
#define WIDTH 10
#define HEIGHT 20
#define GAP 8
#define PENW 1
//////////////////////
Multiplexer::Multiplexer(unsigned size, bool ctl_up): QGraphicsObject(nullptr) {
this->size = size;
seton = -1;
ctlfrom = ctl_up;
con_ctl = new Connector(Connector::AX_Y);
con_out = new Connector(Connector::AX_X);
con_in = new Connector*[size];
for (unsigned i = 0; i < size; i++)
con_in[i] = new Connector(Connector::AX_X);
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(QPen(QColor(200, 200, 200), 2));
if (seton >= 0 && seton < (int)size)
painter->drawLine(0, (HEIGHT / 2) + (seton * 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(std::uint32_t i) {
if (seton != (int)i) {
seton = (int)i;
update();
}
}
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