From 6a484c615ae3f04873fe41a415277ef6c2c37573 Mon Sep 17 00:00:00 2001
From: jaseg <git-bigdata-wsl-arch@jaseg.de>
Date: Thu, 17 Dec 2020 15:43:37 +0100
Subject: WIP

---
 tagview.cpp | 28 +++++++++++++++++++++++++++-
 1 file changed, 27 insertions(+), 1 deletion(-)

(limited to 'tagview.cpp')

diff --git a/tagview.cpp b/tagview.cpp
index 9a9c9a0..6bc3934 100644
--- a/tagview.cpp
+++ b/tagview.cpp
@@ -3,12 +3,13 @@
 #include <QWheelEvent>
 #include <QScrollBar>
 #include <cmath>
+#include <QApplication>
 
 TagView::TagView(QWidget *parent)
     : QGraphicsView(parent)
     , saveCenterTimer(this)
 {
-    setDragMode(QGraphicsView::ScrollHandDrag);
+    setDragMode(QGraphicsView::RubberBandDrag);
     setScene(&m_scene);
     connect(&m_scene, &TagScene::tagDoubleClicked, this, &TagView::tagDoubleClicked);
     connect(&m_scene, &TagScene::imageLoaded, this, &TagView::zoomToFit);
@@ -86,6 +87,31 @@ void TagView::scrollContentsBy(int dx, int dy)
         saveCenterTimer.start();
 }
 
+void TagView::keyPressEvent(QKeyEvent *event)
+{
+    if (event->modifiers() & Qt::ControlModifier)
+        setDragMode(QGraphicsView::ScrollHandDrag);
+    else
+        setDragMode(QGraphicsView::RubberBandDrag);
+}
+
+void TagView::keyReleaseEvent(QKeyEvent *event)
+{
+    if (event->modifiers() & Qt::ControlModifier)
+        setDragMode(QGraphicsView::ScrollHandDrag);
+    else
+        setDragMode(QGraphicsView::RubberBandDrag);
+}
+
+void TagView::focusInEvent(QFocusEvent *event)
+{
+    Q_UNUSED(event);
+    if (QApplication::keyboardModifiers() & Qt::ControlModifier)
+        setDragMode(QGraphicsView::ScrollHandDrag);
+    else
+        setDragMode(QGraphicsView::RubberBandDrag);
+}
+
 void TagView::saveCenter()
 {
     QPointF p = mapToScene(viewport()->rect().center());
-- 
cgit