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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 "logicblock.h"
#include <cmath>
using namespace coreview;
//////////////////////
#define GAP 3
#define RADIUS GAP
#define LINE_OFFSET 1
#define PENW 1
//////////////////////
LogicBlock::LogicBlock(QString name) : LogicBlock(QVector<QString>({name})) { }
LogicBlock::LogicBlock(QVector<QString> name) : QGraphicsObject(nullptr) {
QFont font;
font.setPointSize(7);
qreal h = 0, w = 0;
for (int i = 0; i < name.size(); i++) {
QGraphicsSimpleTextItem *t = new QGraphicsSimpleTextItem(name[i], this);
t->setFont(font);
text.append(t);
QRectF t_box = t->boundingRect();
t->setPos(-t_box.width()/2, h + LINE_OFFSET);
h += t_box.height() + LINE_OFFSET;
if (w < t_box.width())
w = t_box.width();
}
box = QRectF(-w/2 - GAP, -GAP, w + (2*GAP), h + (2*GAP));
}
LogicBlock::~LogicBlock() {
for (int i = 0; i < connectors.size(); i++)
delete connectors[i].con;
for (int i = 0; i < text.size(); i++)
delete text[i];
}
QRectF LogicBlock::boundingRect() const {
return QRectF(box.x() - PENW/2, box.y() - PENW/2, box.width() + PENW, box.height() + PENW);
}
void LogicBlock::paint(QPainter *painter, const QStyleOptionGraphicsItem *option __attribute__((unused)), QWidget *widget __attribute__((unused))) {
painter->drawRoundedRect(box, RADIUS, RADIUS);
}
void LogicBlock::setPos(qreal x, qreal y) {
QGraphicsObject::setPos(x, y);
for (int i = 0; i < connectors.size(); i++) {
struct Con &c = connectors[i];
c.con->setPos(x + c.p.x(), y + c.p.y());
}
}
void LogicBlock::setSize(qreal width, qreal height) {
box.setX(-width/2 - GAP);
box.setWidth(width + (2*GAP));
box.setHeight(height + (2*GAP));
for (int i = 0; i < connectors.size(); i++) { // Update point for all connectors
struct Con &c = connectors[i];
c.p = con_pos(c.x, c.y);
}
setPos(x(), y());
}
static qreal sign(qreal v) {
// This intentionally doesn't return 0 on v == 0
return (0 <= v) - (0 > v);
}
const Connector *LogicBlock::new_connector(qreal x, qreal y) {
// stick to closest edge
if (fabs(x) > fabs(y))
x = sign(x);
else
y = sign(y);
// Note: we are using here that 0 and M_PI is same angle but different orientation (but we ignore orientation for now)
Connector *c = new Connector(fabs(x) > fabs(y) ? Connector::AX_X : Connector::AX_Y);
connectors.append({
.con = c,
.x = x,
.y = y,
.p = con_pos(x, y)
});
setPos(this->x(), this->y()); // Update connector position
return c;
}
QPointF LogicBlock::con_pos(qreal x, qreal y) {
qreal px, py;
px = (box.right() - GAP) * x;
py = (box.bottom()/2 - GAP) * (y + 1) + GAP;
if (fabs(x) == 1)
px += GAP * sign(x);
if (fabs(y) == 1)
py += GAP * sign(y);
return QPointF(px, py);
}
void LogicBlock::mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event) {
QGraphicsObject::mouseDoubleClickEvent(event);
emit open_block();
}
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