From 0a3a7728d7a21c6a4ee4e2f166c30d29197ce77c Mon Sep 17 00:00:00 2001
From: Jussi Lind <jussi.lind@iki.fi>
Date: Tue, 14 Mar 2023 21:33:56 +0200
Subject: [PATCH] Fix GitHub Issue #239: Cannot drag if the drag position is
 inside the virtual rectangle spanned by an edge

---
 CHANGELOG           | 2 ++
 src/editor_view.cpp | 9 +++++++--
 src/editor_view.hpp | 3 ++-
 3 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/CHANGELOG b/CHANGELOG
index 75bb32f2..2b0a0e4b 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -7,6 +7,8 @@ New features:
 
 Bug fixes:
 
+* Fix GitHub Issue #239: Cannot drag if the drag position is inside the virtual rectangle spanned by an edge
+
 Other:
 
 4.0.0
diff --git a/src/editor_view.cpp b/src/editor_view.cpp
index 17521736..7b7621e8 100644
--- a/src/editor_view.cpp
+++ b/src/editor_view.cpp
@@ -99,11 +99,13 @@ void EditorView::handleMousePressEventOnBackground(QMouseEvent & event)
     }
 }
 
-void EditorView::handleMousePressEventOnEdge(QMouseEvent & event, EdgeR edge)
+bool EditorView::handleMousePressEventOnEdge(QMouseEvent & event, EdgeR edge)
 {
     if (m_controlStrategy.secondaryButtonClicked(event)) {
         handleSecondaryButtonClickOnEdge(edge);
+        return true;
     }
+    return false;
 }
 
 void EditorView::handleMousePressEventOnNode(QMouseEvent & event, NodeR node)
@@ -303,7 +305,10 @@ void EditorView::mousePressEvent(QMouseEvent * event)
     if (const auto result = ItemFilter::getFirstItemAtPosition(*scene(), clickedScenePos, Constants::View::CLICK_TOLERANCE); result.success) {
         if (result.edge) {
             juzzlin::L().debug() << "Edge pressed";
-            handleMousePressEventOnEdge(*event, *result.edge);
+            if (!handleMousePressEventOnEdge(*event, *result.edge)) {
+                juzzlin::L().debug() << "Background pressed via edge";
+                handleMousePressEventOnBackground(*event);
+            }
         } else if (result.nodeHandle) {
             juzzlin::L().debug() << "Node handle pressed";
             handleMousePressEventOnNodeHandle(*event, *result.nodeHandle);
diff --git a/src/editor_view.hpp b/src/editor_view.hpp
index 4e70dcaa..f3d9dc1b 100644
--- a/src/editor_view.hpp
+++ b/src/editor_view.hpp
@@ -118,7 +118,8 @@ public slots:
 
     void handleMousePressEventOnBackground(QMouseEvent & event);
 
-    void handleMousePressEventOnEdge(QMouseEvent & event, EdgeR edge);
+    //! \returns true if accepted.
+    bool handleMousePressEventOnEdge(QMouseEvent & event, EdgeR edge);
 
     void handleMousePressEventOnNode(QMouseEvent & event, NodeR node);