5 files changed, 110 insertions, 3 deletions

diff --git a/qtmips_gui/coreview.cpp b/qtmips_gui/coreview.cpp
index 6630ad1..b7c17fc 100644
--- a/qtmips_gui/coreview.cpp
+++ b/qtmips_gui/coreview.cpp
@@ -11,17 +11,20 @@ CoreView::CoreView(QWidget *parent, machine::QtMipsMachine *machine) : QGraphics
     scene.addLine(0, 400, 800, 400);
 
     pc = new coreview::ProgramCounter(machine);
+    alu = new coreview::Alu();
     pc_multiplexer = new coreview::Multiplexer(4);
     testlatch = new coreview::Latch(machine, 300);
 
     pc2pc = new coreview::Connection(pc_multiplexer->connector_out(), pc->connector_in());
 
     scene.addItem(pc);
+    scene.addItem(alu);
     scene.addItem(pc_multiplexer);
     scene.addItem(testlatch);
     scene.addItem(pc2pc);
 
     pc->setPos(100,100);
+    alu->setPos(200, 100);
     pc_multiplexer->setPos(60, 100);
     pc_multiplexer->set(2);
 
diff --git a/qtmips_gui/coreview.h b/qtmips_gui/coreview.h
index 7e9081a..8c0701e 100644
--- a/qtmips_gui/coreview.h
+++ b/qtmips_gui/coreview.h
@@ -8,6 +8,7 @@
 #include "coreview/programcounter.h"
 #include "coreview/multiplexer.h"
 #include "coreview/latch.h"
+#include "coreview/alu.h"
 
 class CoreView : public QGraphicsView {
     Q_OBJECT
@@ -21,6 +22,7 @@ private:
     machine::QtMipsMachine *machine;
 
     coreview::ProgramCounter *pc;
+    coreview::Alu *alu;
     coreview::Multiplexer *pc_multiplexer;
     coreview::Connection *pc2pc;
     coreview::Latch *testlatch;
diff --git a/qtmips_gui/coreview/alu.cpp b/qtmips_gui/coreview/alu.cpp
new file mode 100644
index 0000000..76cf8ad
--- /dev/null
+++ b/qtmips_gui/coreview/alu.cpp
@@ -0,0 +1,62 @@
+#include "alu.h"
+
+//////////////////////
+#define WIDTH 40
+#define HEIGHT 120
+#define DENT 10
+#define PENW 1
+//////////////////////
+
+coreview::Alu::Alu() : QGraphicsObject(nullptr), name(this) {
+    name.setText("ALU");
+    name.setPos(3, 25);
+
+    con_in_a = new Connector();
+    con_in_b = new Connector();
+    con_out = new Connector();
+    con_ctl = new Connector();
+
+    setPos(x(), y()); // set connector's position
+}
+
+QRectF coreview::Alu::boundingRect() const {
+    return QRectF(-PENW / 2, -PENW / 2, WIDTH + PENW, HEIGHT + PENW);
+}
+
+void coreview::Alu::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) {
+    const QPointF poly[] = {
+        QPointF(0, 0),
+        QPointF(WIDTH, WIDTH),
+        QPointF(WIDTH, HEIGHT - WIDTH),
+        QPointF(0, HEIGHT),
+        QPointF(0, (HEIGHT/2) + DENT),
+        QPointF(DENT, HEIGHT / 2),
+        QPointF(0, (HEIGHT / 2) - DENT)
+    };
+    painter->drawPolygon(poly, sizeof(poly) / sizeof(QPointF));
+}
+
+void coreview::Alu::setPos(qreal x, qreal y) {
+    QGraphicsObject::setPos(x, y);
+    qreal off = ((HEIGHT/2) - DENT) / 2;
+    con_in_a->setPos(0, off);
+    con_in_b->setPos(0, HEIGHT - off);
+    con_out->setPos(WIDTH, HEIGHT/2);
+    con_ctl->setPos(WIDTH/2, HEIGHT - (WIDTH/2));
+}
+
+const coreview::Connector *coreview::Alu::connector_in_a() const {
+    return con_in_a;
+}
+
+const coreview::Connector *coreview::Alu::connector_in_b() const {
+    return con_in_b;
+}
+
+const coreview::Connector *coreview::Alu::connector_out() const {
+    return con_out;
+}
+
+const coreview::Connector *coreview::Alu::connector_ctl() const {
+    return con_ctl;
+}
diff --git a/qtmips_gui/coreview/alu.h b/qtmips_gui/coreview/alu.h
new file mode 100644
index 0000000..4c9a73b
--- /dev/null
+++ b/qtmips_gui/coreview/alu.h
@@ -0,0 +1,37 @@
+#ifndef COREVIEW_ALU_H
+#define COREVIEW_ALU_H
+
+#include <QGraphicsObject>
+#include <qtmipsmachine.h>
+#include "../coreview.h"
+#include "connection.h"
+
+namespace coreview {
+
+class Alu : public QGraphicsObject {
+public:
+    Alu();
+
+    QRectF boundingRect() const;
+    void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);
+
+    void setPos(qreal x, qreal y);
+    const Connector *connector_in_a() const;
+    const Connector *connector_in_b() const;
+    const Connector *connector_out() const;
+    const Connector *connector_ctl() const;
+
+private:
+    QGraphicsSimpleTextItem name;
+    Connector *con_in_a, *con_in_b, *con_out, *con_ctl;
+};
+
+}
+
+#else
+
+namespace coreview {
+    class Alu;
+}
+
+#endif // COREVIEW_ALU_H
diff --git a/qtmips_gui/qtmips_gui.pro b/qtmips_gui/qtmips_gui.pro
index 969450e..66d9189 100644
--- a/qtmips_gui/qtmips_gui.pro
+++ b/qtmips_gui/qtmips_gui.pro
@@ -23,7 +23,8 @@ SOURCES += \
         coreview/programcounter.cpp \
         coreview/multiplexer.cpp \
         coreview/connection.cpp \
-        coreview/latch.cpp
+        coreview/latch.cpp \
+        coreview/alu.cpp
 
 HEADERS += \
         mainwindow.h \
@@ -35,13 +36,15 @@ HEADERS += \
         coreview/programcounter.h \
         coreview/multiplexer.h \
         coreview/connection.h \
-        coreview/latch.h
+        coreview/latch.h \
+        coreview/alu.h
 
 FORMS += \
         NewDialog.ui \
         MainWindow.ui \
         CacheContent.ui \
-        CacheStatistics.ui
+        CacheStatistics.ui \
+        programmemory.ui
 
 RESOURCES += \
         icons.qrc