From 9d9bb836a1b83fab5bc408ffd7d4305e0d8b965a Mon Sep 17 00:00:00 2001
From: Aleks Kissinger <aleks0@gmail.com>
Date: Wed, 3 Jan 2018 22:32:37 +0100
Subject: fixed jumping when nodes are added

---
 tikzit/src/gui/tikzscene.cpp | 32 +++++++++++++++++++++++++++++++-
 1 file changed, 31 insertions(+), 1 deletion(-)

(limited to 'tikzit/src/gui/tikzscene.cpp')

diff --git a/tikzit/src/gui/tikzscene.cpp b/tikzit/src/gui/tikzscene.cpp
index 2d9b49f..3431c0c 100644
--- a/tikzit/src/gui/tikzscene.cpp
+++ b/tikzit/src/gui/tikzscene.cpp
@@ -12,6 +12,16 @@ TikzScene::TikzScene(TikzDocument *tikzDocument, QObject *parent) :
     QGraphicsScene(parent), _tikzDocument(tikzDocument)
 {
     _modifyEdgeItem = 0;
+    _drawEdgeItem = new QGraphicsLineItem();
+    setSceneRect(-310,-230,620,450);
+
+    QPen pen;
+    pen.setColor(QColor::fromRgbF(0.5f, 0.0f, 0.5f));
+    pen.setWidth(3);
+    _drawEdgeItem->setPen(pen);
+    _drawEdgeItem->setLine(0,0,0,0);
+    _drawEdgeItem->setVisible(false);
+    addItem(_drawEdgeItem);
 }
 
 TikzScene::~TikzScene() {
@@ -272,7 +282,13 @@ void TikzScene::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
             QPointF gridPos(round(mousePos.x()/gridSize)*gridSize, round(mousePos.y()/gridSize)*gridSize);
             Node *n = new Node();
             n->setPoint(fromScreen(gridPos));
-            AddNodeCommand *cmd = new AddNodeCommand(this, n);
+
+            QRectF grow(gridPos.x() - GLOBAL_SCALEF, gridPos.y() - GLOBAL_SCALEF, 2 * GLOBAL_SCALEF, 2 * GLOBAL_SCALEF);
+            QRectF newBounds = sceneRect().united(grow);
+            qDebug() << grow;
+            qDebug() << newBounds;
+
+            AddNodeCommand *cmd = new AddNodeCommand(this, n, newBounds);
             _tikzDocument->undoStack()->push(cmd);
         }
         break;
@@ -343,6 +359,20 @@ void TikzScene::refreshAdjacentEdges(QList<Node*> nodes)
     }
 }
 
+void TikzScene::setBounds(QRectF bounds)
+{
+    if (bounds != sceneRect()) {
+        if (!views().empty()) {
+            QGraphicsView *v = views().first();
+            QPointF c = v->mapToScene(v->viewport()->rect().center());
+            setSceneRect(bounds);
+            v->centerOn(c);
+        } else {
+            setSceneRect(bounds);
+        }
+    }
+}
+
 QMap<Node*,NodeItem *> &TikzScene::nodeItems()
 {
     return _nodeItems;
-- 
cgit v1.2.3