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

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

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
+}
-- 
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