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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 "latch.h"
#include <cmath>
using namespace coreview;
//////////////////////
#define WIDTH 7
#define PENW 1
//////////////////////
Latch::Latch(machine::QtMipsMachine *machine, qreal height) : QGraphicsObject(nullptr) {
this->height = height;
title = new QGraphicsSimpleTextItem(this);
QFont font;
font.setPointSize(6);
title->setFont(font);
wedge_animation = new QPropertyAnimation(this, "wedge_clr");
wedge_animation->setDuration(100);
wedge_animation->setStartValue(QColor(0, 0, 0));
wedge_animation->setEndValue(QColor(255, 255, 255));
wedge_clr = QColor(255, 255, 255);
connect(machine, SIGNAL(tick()), this, SLOT(tick()));
}
Latch::~Latch() {
while (!connectors.isEmpty()) {
ConnectorPair cp = connectors.takeFirst();
delete cp.in;
delete cp.out;
}
delete wedge_animation;
}
QRectF Latch::boundingRect() const {
QRectF b(-PENW / 2, -PENW / 2, WIDTH + PENW, height + PENW);
b |= title->boundingRect();
return b;
}
void Latch::paint(QPainter *painter, const QStyleOptionGraphicsItem *option __attribute__((unused)), QWidget *widget __attribute__((unused))) {
painter->drawRect(0, 0, WIDTH, height);
// Now tick rectangle
const QPointF tickPolygon[] = {
QPointF(0, 0),
QPointF(WIDTH, 0),
QPointF(WIDTH/2, WIDTH/2)
};
painter->setBrush(QBrush(wedge_color()));
painter->drawPolygon(tickPolygon, sizeof(tickPolygon) / sizeof(QPointF));
}
QColor Latch::wedge_color() {
return wedge_clr;
}
void Latch::set_wedge_color(QColor &c) {
wedge_clr = c;
update();
}
void Latch::setTitle(const QString &str) {
title->setText(str);
QRectF box = title->boundingRect();
title->setPos(WIDTH/2 - box.width()/2, - box.height() - 1);
}
void Latch::setPos(qreal x, qreal y) {
QGraphicsObject::setPos(x, y);
for (int 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(Connector::AX_X);
cp.out = new Connector(Connector::AX_X);
connectors.append(cp);
connectors_off.append(cy);
setPos(x(), y()); // Update connectors position
return cp;
}
void Latch::tick() {
wedge_clr = QColor(0, 0, 0);
wedge_animation->start();
update();
}
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