From 7b59b08aa0188daa485e088f6125bcc5c3a11f85 Mon Sep 17 00:00:00 2001
From: Aleks Kissinger <aleks0@gmail.com>
Date: Fri, 11 Jan 2019 12:03:36 +0100
Subject: smart tool

---
 src/gui/tikzscene.cpp | 22 +++++++++++++++++++++-
 src/gui/tikzscene.h   |  1 +
 2 files changed, 22 insertions(+), 1 deletion(-)

diff --git a/src/gui/tikzscene.cpp b/src/gui/tikzscene.cpp
index 8c1e853..47179f7 100644
--- a/src/gui/tikzscene.cpp
+++ b/src/gui/tikzscene.cpp
@@ -29,6 +29,7 @@
 #include <QInputDialog>
 #include <cmath>
 #include <delimitedstringvalidator.h>
+#include <QSettings>
 
 
 TikzScene::TikzScene(TikzDocument *tikzDocument, ToolPalette *tools,
@@ -227,6 +228,7 @@ void TikzScene::refreshZIndices()
 
 void TikzScene::mousePressEvent(QGraphicsSceneMouseEvent *event)
 {
+    QSettings settings("tikzit", "tikzit");
     if (!_enabled) return;
 
     // current mouse position, in scene coordinates
@@ -238,7 +240,19 @@ void TikzScene::mousePressEvent(QGraphicsSceneMouseEvent *event)
     qreal cpR = GLOBAL_SCALEF * (0.1);
     qreal cpR2 = cpR * cpR;
 
-
+    if (event->button() == Qt::RightButton &&
+        _tools->currentTool() == ToolPalette::SELECT &&
+        settings.value("smart-tool-enabled", true).toBool())
+    {
+        _smartTool = true;
+        if (!items(_mouseDownPos).isEmpty() &&
+            dynamic_cast<NodeItem*>(items(_mouseDownPos)[0]))
+        {
+            _tools->setCurrentTool(ToolPalette::EDGE);
+        } else {
+            _tools->setCurrentTool(ToolPalette::VERTEX);
+        }
+    }
 
     switch (_tools->currentTool()) {
     case ToolPalette::SELECT:
@@ -571,6 +585,12 @@ void TikzScene::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
         break;
     }
 
+    if (_smartTool) {
+        _tools->setCurrentTool(ToolPalette::SELECT);
+    }
+
+    _smartTool = false;
+
     // clear artefacts from rubber band selection
     invalidate(QRect(), QGraphicsScene::BackgroundLayer);
 }
diff --git a/src/gui/tikzscene.h b/src/gui/tikzscene.h
index 3baa929..3e46f6d 100644
--- a/src/gui/tikzscene.h
+++ b/src/gui/tikzscene.h
@@ -121,6 +121,7 @@ private:
 
     bool _highlightHeads;
     bool _highlightTails;
+    bool _smartTool;
 };
 
 #endif // TIKZSCENE_H
-- 
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