From 7bdf1bbb2b65612bd3f349562ca622f28dc1abff Mon Sep 17 00:00:00 2001
From: Aleks Kissinger <aleks0@gmail.com>
Date: Fri, 20 Jul 2018 14:19:08 +0200
Subject: reflection

---
 src/gui/mainmenu.cpp     | 11 +++++++++++
 src/gui/mainmenu.h       |  2 ++
 src/gui/tikzscene.cpp    |  5 +++++
 src/gui/tikzscene.h      |  1 +
 src/gui/undocommands.cpp | 31 +++++++++++++++++++++++++++++++
 src/gui/undocommands.h   | 14 ++++++++++++++
 6 files changed, 64 insertions(+)

(limited to 'src/gui')

diff --git a/src/gui/mainmenu.cpp b/src/gui/mainmenu.cpp
index 3625338..fa52138 100644
--- a/src/gui/mainmenu.cpp
+++ b/src/gui/mainmenu.cpp
@@ -110,6 +110,17 @@ void MainMenu::on_actionDeselect_All_triggered()
         tikzit->activeWindow()->tikzScene()->deselectAll();
 }
 
+void MainMenu::on_actionReflectHorizontal_triggered()
+{
+    if (tikzit->activeWindow() != 0)
+        tikzit->activeWindow()->tikzScene()->reflectNodes(true);
+}
+
+void MainMenu::on_actionReflectVertical_triggered()
+{
+    if (tikzit->activeWindow() != 0)
+        tikzit->activeWindow()->tikzScene()->reflectNodes(false);
+}
 
 // Tikz
 void MainMenu::on_actionParse_triggered()
diff --git a/src/gui/mainmenu.h b/src/gui/mainmenu.h
index aa5c727..79aafad 100644
--- a/src/gui/mainmenu.h
+++ b/src/gui/mainmenu.h
@@ -50,6 +50,8 @@ public slots:
     void on_actionDelete_triggered();
     void on_actionSelect_All_triggered();
     void on_actionDeselect_All_triggered();
+    void on_actionReflectHorizontal_triggered();
+    void on_actionReflectVertical_triggered();
 
     // Tikz
     void on_actionParse_triggered();
diff --git a/src/gui/tikzscene.cpp b/src/gui/tikzscene.cpp
index 1ddd945..9422b6b 100644
--- a/src/gui/tikzscene.cpp
+++ b/src/gui/tikzscene.cpp
@@ -681,6 +681,11 @@ void TikzScene::parseTikz(QString tikz)
     }
 }
 
+void TikzScene::reflectNodes(bool horizontal) {
+    ReflectNodesCommand *cmd = new ReflectNodesCommand(this, getSelectedNodes(), horizontal);
+    tikzDocument()->undoStack()->push(cmd);
+}
+
 void TikzScene::getSelection(QSet<Node *> &selNodes, QSet<Edge *> &selEdges)
 {
     foreach (QGraphicsItem *gi, selectedItems()) {
diff --git a/src/gui/tikzscene.h b/src/gui/tikzscene.h
index b6b2560..b0e3835 100644
--- a/src/gui/tikzscene.h
+++ b/src/gui/tikzscene.h
@@ -64,6 +64,7 @@ public:
     void selectAllNodes();
     void deselectAll();
     void parseTikz(QString tikz);
+    void reflectNodes(bool horizontal);
     bool enabled() const;
     void setEnabled(bool enabled);
     int lineNumberForSelection();
diff --git a/src/gui/undocommands.cpp b/src/gui/undocommands.cpp
index c8221fe..e2502f1 100644
--- a/src/gui/undocommands.cpp
+++ b/src/gui/undocommands.cpp
@@ -430,3 +430,34 @@ void ReplaceGraphCommand::redo()
     _scene->tikzDocument()->setGraph(_newGraph);
     _scene->graphReplaced();
 }
+
+ReflectNodesCommand::ReflectNodesCommand(TikzScene *scene, QSet<Node*> nodes, bool horizontal, QUndoCommand *parent) :
+    GraphUpdateCommand(scene, parent), _nodes(nodes), _horizontal(horizontal)
+{
+}
+
+void ReflectNodesCommand::undo()
+{
+    _scene->graph()->reflectNodes(_nodes, _horizontal);
+    foreach (NodeItem *ni, _scene->nodeItems()) {
+        if (_nodes.contains(ni->node())) {
+            ni->readPos();
+        }
+    }
+
+    _scene->refreshAdjacentEdges(_nodes.toList());
+    GraphUpdateCommand::undo();
+}
+
+void ReflectNodesCommand::redo()
+{
+    _scene->graph()->reflectNodes(_nodes, _horizontal);
+    foreach (NodeItem *ni, _scene->nodeItems()) {
+        if (_nodes.contains(ni->node())) {
+            ni->readPos();
+        }
+    }
+
+    _scene->refreshAdjacentEdges(_nodes.toList());
+    GraphUpdateCommand::redo();
+}
diff --git a/src/gui/undocommands.h b/src/gui/undocommands.h
index 292632e..0e7a63d 100644
--- a/src/gui/undocommands.h
+++ b/src/gui/undocommands.h
@@ -191,4 +191,18 @@ private:
     Graph *_newGraph;
 };
 
+class ReflectNodesCommand : public GraphUpdateCommand
+{
+public:
+    explicit ReflectNodesCommand(TikzScene *scene,
+                                 QSet<Node*> nodes,
+                                 bool horizontal,
+                                 QUndoCommand *parent = 0);
+    void undo() override;
+    void redo() override;
+private:
+    QSet<Node*> _nodes;
+    bool _horizontal;
+};
+
 #endif // UNDOCOMMANDS_H
-- 
cgit v1.2.3