Implement few initial graphic elements

1 files changed, 48 insertions, 0 deletions

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));
+}