From e6ca4b4568e311b47239bfe83de15ed9e91c57b9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Karel=20Ko=C4=8D=C3=AD?= <cynerd@email.cz>
Date: Fri, 15 Dec 2017 22:45:28 +0100
Subject: Implement few initial graphic elements

---
 qtmips_gui/coreview/multiplexer.cpp | 79 +++++++++++++++++++++++++++++++++++++
 1 file changed, 79 insertions(+)
 create mode 100644 qtmips_gui/coreview/multiplexer.cpp

(limited to 'qtmips_gui/coreview/multiplexer.cpp')

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
+}
-- 
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