From 738ecbd5fad2b46836bfd6a94aeebf165ae2bbca Mon Sep 17 00:00:00 2001
From: Aleks Kissinger <aleks0@gmail.com>
Date: Thu, 4 Jan 2018 16:00:52 +0100
Subject: relocated source code to the root

---
 src/data/graph.cpp | 172 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 172 insertions(+)
 create mode 100644 src/data/graph.cpp

(limited to 'src/data/graph.cpp')

diff --git a/src/data/graph.cpp b/src/data/graph.cpp
new file mode 100644
index 0000000..ba9a4c6
--- /dev/null
+++ b/src/data/graph.cpp
@@ -0,0 +1,172 @@
+#include "graph.h"
+
+#include <QTextStream>
+#include <QSet>
+#include <QtAlgorithms>
+#include <QDebug>
+#include <algorithm>
+
+Graph::Graph(QObject *parent) : QObject(parent)
+{
+    _data = new GraphElementData(this);
+    _bbox = QRectF(0,0,0,0);
+}
+
+Graph::~Graph()
+{
+}
+
+// add a node. The graph claims ownership.
+void Graph::addNode(Node *n) {
+    n->setParent(this);
+    _nodes << n;
+}
+
+void Graph::addNode(Node *n, int index)
+{
+    n->setParent(this);
+    _nodes.insert(index, n);
+}
+
+void Graph::removeNode(Node *n) {
+    // the node itself is not deleted, as it may still be referenced in an undo command. It will
+    // be deleted when graph is, via QObject memory management.
+    _nodes.removeOne(n);
+}
+
+
+void Graph::addEdge(Edge *e)
+{
+    e->setParent(this);
+    _edges << e;
+}
+
+void Graph::addEdge(Edge *e, int index)
+{
+    e->setParent(this);
+    _edges.insert(index, e);
+}
+
+void Graph::removeEdge(Edge *e)
+{
+    // the edge itself is not deleted, as it may still be referenced in an undo command. It will
+    // be deleted when graph is, via QObject memory management.
+    _edges.removeOne(e);
+}
+
+GraphElementData *Graph::data() const
+{
+    return _data;
+}
+
+void Graph::setData(GraphElementData *data)
+{
+    delete _data;
+    _data = data;
+}
+
+const QVector<Node*> &Graph::nodes()
+{
+    return _nodes;
+}
+
+const QVector<Edge*> &Graph::edges()
+{
+    return _edges;
+}
+
+QRectF Graph::bbox() const
+{
+    return _bbox;
+}
+
+bool Graph::hasBbox() {
+    return !(_bbox == QRectF(0,0,0,0));
+}
+
+void Graph::clearBbox() {
+    _bbox = QRectF(0,0,0,0);
+}
+
+QString Graph::tikz()
+{
+    QString str;
+    QTextStream code(&str);
+
+    code << "\\begin{tikzpicture}" << _data->tikz() << "\n";
+    if (hasBbox()) {
+        code << "\t\\path [use as bounding box] ("
+             << _bbox.topLeft().x() << "," << _bbox.topLeft().y()
+             << ") rectangle ("
+             << _bbox.bottomRight().x() << "," << _bbox.bottomRight().y()
+             << ");\n";
+    }
+
+    if (!_nodes.isEmpty())
+        code << "\t\\begin{pgfonlayer}{nodelayer}\n";
+
+    Node *n;
+    foreach (n, _nodes) {
+        code << "\t\t\\node ";
+
+        if (!n->data()->isEmpty())
+            code << n->data()->tikz() << " ";
+
+        code << "(" << n->name() << ") at ("
+             << n->point().x() << ", " << n->point().y()
+             << ") {" << n->label() << "};\n";
+    }
+
+    if (!_nodes.isEmpty())
+        code << "\t\\end{pgfonlayer}\n";
+
+    if (!_edges.isEmpty())
+        code << "\t\\begin{pgfonlayer}{edgelayer}\n";
+
+
+    Edge *e;
+    foreach (e, _edges) {
+        code << "\t\t\\draw ";
+
+        if (!e->data()->isEmpty())
+            code << e->data()->tikz() << " ";
+
+        code << "(" << e->source()->name();
+        if (e->sourceAnchor() != "")
+            code << "." << e->sourceAnchor();
+        code << ") to ";
+
+        if (e->hasEdgeNode()) {
+            code << "node ";
+            if (!e->edgeNode()->data()->isEmpty())
+                code << e->edgeNode()->data()->tikz() << " ";
+            code << "{" << e->edgeNode()->label() << "} ";
+        }
+
+        if (e->source() == e->target()) {
+            code << "()";
+        } else {
+            code << "(" << e->target()->name();
+            if (e->targetAnchor() != "")
+                code << "." << e->targetAnchor();
+            code << ")";
+        }
+
+        code << ";\n";
+    }
+
+    if (!_edges.isEmpty())
+        code << "\t\\end{pgfonlayer}\n";
+
+    code << "\\end{tikzpicture}\n";
+
+    code.flush();
+    return str;
+}
+
+void Graph::setBbox(const QRectF &bbox)
+{
+    _bbox = bbox;
+}
+
+
-- 
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