8 files changed, 445 insertions, 0 deletions
diff --git a/qtmips_gui/coreview/connection.cpp b/qtmips_gui/coreview/connection.cpp
new file mode 100644
index 0000000..ebca519
--- /dev/null
+++ b/qtmips_gui/coreview/connection.cpp
@@ -0,0 +1,79 @@
+#include "connection.h"
+
+using namespace coreview;
+
+void Connector::setPos(qreal x, qreal y) {
+    qx = x;
+    qy = y;
+    emit updated();
+}
+
+qreal Connector::x() const {
+    return qx;
+}
+
+qreal Connector::y() const {
+    return qy;
+}
+
+QPointF Connector::point() const {
+    return QPointF(qx, qy);
+}
+
+Connection::Connection(const Connector *a, const Connector *b) : QGraphicsObject(nullptr) {
+    connect(a, SIGNAL(updated()), this, SLOT(moved()));
+    connect(b, SIGNAL(updated()), this, SLOT(moved()));
+    this->a = a;
+    this->b = b;
+    update_pos();
+}
+
+void Connection::setHasText(bool has) {
+    if (has && value == nullptr) {
+        value = new QGraphicsSimpleTextItem(this);
+        value->setText(text);
+    } else if (!has && value != nullptr) {
+        delete value;
+    }
+    update_pos();
+}
+
+void Connection::setText(QString val) {
+    text = val;
+    if (value != nullptr)
+        value->setText(val);
+}
+
+void Connection::moved() {
+    update_pos();
+}
+
+QRectF Connection::boundingRect() const {
+    QRectF rect;
+    for (int i = 0; i < (points.size() - 1); i++) {
+        qreal x = points[i].x();
+        if (x > points[i+1].x())
+            x = points[i+1].x();
+        qreal y = points[i].y();
+        if (y > points[i+1].y())
+            y = points[i+1].y();
+        // TODO pen width
+        rect.united(QRectF(x - 0.5, y - 0.5, fabs(points[i].x() - points[i+1].x()) + 1, fabs(points[i].y() - points[i+1].y()) + 1));
+    }
+    //return rect;
+    return QRectF(0, 0, 300, 300);
+}
+
+void Connection::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) {
+    for (int i = 0; i < (points.size() - 1); i++)
+        painter->drawLine(points[i], points[i+1]);
+    // TODO meaby use QPath instead?
+}
+
+void Connection::update_pos() {
+    points.clear();
+    points.append(a->point());
+    points.append(b->point());
+    // TODO more than one line
+    // TODO update position of value
+}
diff --git a/qtmips_gui/coreview/connection.h b/qtmips_gui/coreview/connection.h
new file mode 100644
index 0000000..eda6afe
--- /dev/null
+++ b/qtmips_gui/coreview/connection.h
@@ -0,0 +1,60 @@
+#ifndef CONNECTION_H
+#define CONNECTION_H
+
+#include <QGraphicsObject>
+#include <QList>
+#include <cmath>
+#include "../coreview.h"
+
+namespace coreview {
+
+class Connector : public QObject {
+    Q_OBJECT
+public:
+    void setPos(qreal x, qreal y);
+    qreal x() const;
+    qreal y() const;
+    QPointF point() const;
+
+signals:
+    void updated();
+
+private:
+    qreal qx, qy;
+};
+
+class Connection : public QGraphicsObject {
+    Q_OBJECT
+public:
+    Connection(const Connector *a, const Connector *b);
+
+    void setHasText(bool has);
+    void setText(QString val);
+
+private slots:
+    void moved();
+
+private:
+    QGraphicsSimpleTextItem *value;
+    QList<QPointF> points;
+    const Connector *a, *b;
+    QString text;
+
+    QRectF boundingRect() const;
+    void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);
+
+    // TODO line width and possibly bus width
+
+    void update_pos();
+};
+
+}
+
+#else
+
+namespace coreview {
+    class Connector;
+    class Connection;
+};
+
+#endif // CONNECTION_H
diff --git a/qtmips_gui/coreview/latch.cpp b/qtmips_gui/coreview/latch.cpp
new file mode 100644
index 0000000..77bb317
--- /dev/null
+++ b/qtmips_gui/coreview/latch.cpp
@@ -0,0 +1,51 @@
+#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
+}
diff --git a/qtmips_gui/coreview/latch.h b/qtmips_gui/coreview/latch.h
new file mode 100644
index 0000000..a8738b3
--- /dev/null
+++ b/qtmips_gui/coreview/latch.h
@@ -0,0 +1,45 @@
+#ifndef LATCH_H
+#define LATCH_H
+
+#include <QGraphicsObject>
+#include <QList>
+#include "qtmipsexception.h"
+#include "qtmipsmachine.h"
+#include "../coreview.h"
+#include "connection.h"
+
+namespace coreview {
+
+class Latch : public QGraphicsObject {
+    Q_OBJECT
+public:
+    Latch(QtMipsMachine *machine, qreal height);
+
+    QRectF boundingRect() const;
+    void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);
+
+    void setPos(qreal x, qreal y);
+
+    struct ConnectorPair { Connector *in, *out; };
+
+    struct ConnectorPair new_connector(qreal y); // Create new connectors pair that is given y from top of latch
+
+private slots:
+    void tick();
+
+private:
+    qreal height;
+    QList<ConnectorPair> connectors;
+    QList<qreal> connectors_off;
+
+};
+
+}
+
+#else
+
+namespace coreview {
+    class Latch;
+};
+
+#endif // LATCH_H
diff --git a/qtmips_gui/coreview/multiplexer.cpp b/qtmips_gui/coreview/multiplexer.cpp
new file mode 100644
index 0000000..57fa443
--- /dev/null
+++ b/qtmips_gui/coreview/multiplexer.cpp
@@ -0,0 +1,79 @@
+#include "multiplexer.h"
+
+using namespace coreview;
+
+//////////////////////
+#define WIDTH 20
+#define HEIGHT 20
+#define PENW 1
+//////////////////////
+
+Multiplexer::Multiplexer(unsigned size) {
+    this->size = size;
+    seton = 0;
+    ctlfrom = false;
+    con_ctl = new Connector();
+    con_out = new Connector();
+    con_in = new Connector*[size];
+    for (unsigned i = 0; i < size; i++)
+        con_in[i] = new Connector();
+    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;
+}
+
+QRectF Multiplexer::boundingRect() const {
+    return QRectF(-PENW / 2, -PENW / 2, WIDTH + PENW, (HEIGHT * size) + PENW);
+}
+
+void Multiplexer::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) {
+    // Draw pointing line first so it isn't over the border lines
+    painter->setPen(QColor(200, 200, 200));
+    painter->drawLine(0, (HEIGHT / 2) + (seton * HEIGHT), WIDTH, (HEIGHT * size) / 2);
+
+    painter->setPen(QColor());
+    painter->drawLine(0, 0, 0, (HEIGHT * size)); // (|)
+    painter->drawLine(0, 0, WIDTH, WIDTH); // (\)
+    painter->drawLine(0, (HEIGHT * size), WIDTH, (HEIGHT * size) - WIDTH); // (/)
+    painter->drawLine(WIDTH, WIDTH, WIDTH, (HEIGHT * size) - WIDTH); // (|)
+}
+
+void Multiplexer::setPos(qreal x, qreal y) {
+    QGraphicsItem::setPos(x, y);
+    if (ctlfrom)
+        con_ctl->setPos(x + (WIDTH / 2), y + (WIDTH / 2));
+    else
+        con_ctl->setPos(x + (WIDTH / 2), y + (HEIGHT * size) - (WIDTH / 2));
+    con_out->setPos(x + WIDTH, y + ((HEIGHT *size) / 2));
+    for (unsigned i = 0; i < size; i++)
+        con_in[i]->setPos(x, y + (HEIGHT / 2) + (i * HEIGHT));
+}
+
+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(boundingRect());
+}
+
+void Multiplexer::setCtl(bool up) {
+    ctlfrom = up;
+    setPos(x(), y()); // Update connectors
+}
diff --git a/qtmips_gui/coreview/multiplexer.h b/qtmips_gui/coreview/multiplexer.h
new file mode 100644
index 0000000..6aa11a6
--- /dev/null
+++ b/qtmips_gui/coreview/multiplexer.h
@@ -0,0 +1,41 @@
+#ifndef MULTIPLEXER_H
+#define MULTIPLEXER_H
+
+#include <QGraphicsItem>
+#include "qtmipsexception.h"
+#include "../coreview.h"
+#include "connection.h"
+
+namespace coreview {
+
+class Multiplexer : public QGraphicsItem {
+public:
+    Multiplexer(unsigned size);
+    ~Multiplexer();
+
+    QRectF boundingRect() const;
+    void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);
+
+    void setPos(qreal x, qreal y);
+    const Connector *connector_ctl() const; // Control input
+    const Connector *connector_out() const; // Output
+    const Connector *connector_in(unsigned i) const; // Inputs
+
+    void set(unsigned i); // Set what value should be set as connected
+    void setCtl(bool up); // Set if control signal is from up or down (in default down)
+
+private:
+    bool ctlfrom;
+    unsigned size, seton;
+    Connector *con_ctl, *con_out, **con_in;
+};
+
+}
+
+#else
+
+namespace coreview {
+    class Multiplexer;
+}
+
+#endif // MULTIPLEXER_H
diff --git a/qtmips_gui/coreview/programcounter.cpp b/qtmips_gui/coreview/programcounter.cpp
new file mode 100644
index 0000000..32c907c
--- /dev/null
+++ b/qtmips_gui/coreview/programcounter.cpp
@@ -0,0 +1,48 @@
+#include "programcounter.h"
+
+using namespace coreview;
+
+//////////////////////
+#define WIDTH 80
+#define HEIGHT 100
+#define PENW 1
+//////////////////////
+
+ProgramCounter::ProgramCounter(QtMipsMachine *machine) : QGraphicsObject(nullptr), value(this), name(this) {
+    value.setText(QString("0x") + QString::number(machine->registers()->read_pc(), 16));
+    value.setPos(0, HEIGHT/2 - value.boundingRect().height()/2);
+    name.setText(QString("PC"));
+    name.setPos(WIDTH/2 - name.boundingRect().width()/2, 0);
+
+    connect(machine->registers(), SIGNAL(pc_update(std::uint32_t)), this, SLOT(pc_update(std::uint32_t)));
+
+    con_in = new Connector();
+    con_out = new Connector();
+    setPos(x(), y()); // To set initial connectors positions
+}
+
+QRectF ProgramCounter::boundingRect() const {
+    return QRectF(-PENW / 2, -PENW / 2, WIDTH + PENW, HEIGHT + PENW);
+}
+
+void ProgramCounter::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) {
+    painter->drawRect(0, 0, WIDTH, HEIGHT);
+}
+
+void ProgramCounter::setPos(qreal x, qreal y) {
+    QGraphicsObject::setPos(x, y);
+    con_in->setPos(x, y + HEIGHT/2);
+    con_out->setPos(x + WIDTH, y + HEIGHT/2);
+}
+
+const Connector *ProgramCounter::connector_in() const {
+    return con_in;
+}
+
+const Connector *ProgramCounter::connector_out() const {
+    return con_out;
+}
+
+void ProgramCounter::pc_update(std::uint32_t val) {
+    value.setText(QString("0x") + QString::number(val, 16));
+}
diff --git a/qtmips_gui/coreview/programcounter.h b/qtmips_gui/coreview/programcounter.h
new file mode 100644
index 0000000..98b161d
--- /dev/null
+++ b/qtmips_gui/coreview/programcounter.h
@@ -0,0 +1,42 @@
+#ifndef PROGRAMCOUNTER_H
+#define PROGRAMCOUNTER_H
+
+#include <QGraphicsObject>
+#include <QPainter>
+#include "qtmipsmachine.h"
+#include "../coreview.h"
+#include "connection.h"
+
+namespace coreview {
+
+class ProgramCounter : public QGraphicsObject {
+        Q_OBJECT
+public:
+    ProgramCounter(QtMipsMachine *machine);
+
+    QRectF boundingRect() const;
+    void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);
+
+    void setPos(qreal x, qreal y);
+    const Connector *connector_in() const;
+    const Connector *connector_out() const;
+
+private slots:
+    void pc_update(std::uint32_t val);
+
+private:
+    QGraphicsSimpleTextItem value;
+    QGraphicsSimpleTextItem name;
+
+    Connector *con_in, *con_out;
+};
+
+}
+
+#else
+
+namespace coreview {
+    class ProgramCounter;
+};
+
+#endif // PROGRAMCOUNTER_H