From 1a75eb19d0116f7e1781a6c5af9c7a07a488f3d0 Mon Sep 17 00:00:00 2001
From: joshua <Joshua@qelectrotech.org>
Date: Tue, 4 Jan 2022 18:41:46 +0100
Subject: [PATCH] Graphics item handler is bigger when overred

---
 .../qetgraphicshandleritem.cpp                | 40 +++++++++++++++++--
 .../qetgraphicshandleritem.h                  | 19 +++++++--
 2 files changed, 53 insertions(+), 6 deletions(-)

diff --git a/sources/QetGraphicsItemModeler/qetgraphicshandleritem.cpp b/sources/QetGraphicsItemModeler/qetgraphicshandleritem.cpp
index 16c418e90..229f7b79d 100644
--- a/sources/QetGraphicsItemModeler/qetgraphicshandleritem.cpp
+++ b/sources/QetGraphicsItemModeler/qetgraphicshandleritem.cpp
@@ -19,6 +19,7 @@
 #include <QPainter>
 #include <QDebug>
 #include <utility>
+#include <QPropertyAnimation>
 
 /**
 	@brief QetGraphicsHandlerItem::QetGraphicsHandlerItem
@@ -26,6 +27,7 @@
 */
 QetGraphicsHandlerItem::QetGraphicsHandlerItem(qreal size)
 {
+	setAcceptHoverEvents(true);
 	setFlag(QGraphicsItem::ItemIgnoresTransformations);
 	setSize(size);
 }
@@ -33,9 +35,9 @@ QetGraphicsHandlerItem::QetGraphicsHandlerItem(qreal size)
 void QetGraphicsHandlerItem::setSize(qreal size)
 {
 	prepareGeometryChange();
-	m_size = size;
-	m_handler_rect.setRect(0-m_size/2, 0-m_size/2, m_size, m_size);
-	m_br.setRect(-1-m_size/2, -1-m_size/2, m_size+2, m_size+2);
+	m_current_size = m_original_size = size;
+	m_handler_rect.setRect(0-m_current_size/2, 0-m_current_size/2, m_current_size, m_current_size);
+	m_br.setRect(-1-m_current_size/2, -1-m_current_size/2, m_current_size+2, m_current_size+2);
 }
 
 /**
@@ -84,6 +86,38 @@ void QetGraphicsHandlerItem::paint(QPainter *painter,
 	painter->restore();
 }
 
+void QetGraphicsHandlerItem::hoverEnterEvent(QGraphicsSceneHoverEvent *event)
+{
+	Q_UNUSED(event);
+
+	auto animation_ = new QPropertyAnimation(this, "currentSize");
+	animation_->setStartValue(m_original_size);
+	animation_->setEndValue(m_original_size*1.5);
+	animation_->setDuration(200);
+	animation_->setEasingCurve(QEasingCurve::OutBack);
+	animation_->start(QAbstractAnimation::DeleteWhenStopped);
+}
+
+void QetGraphicsHandlerItem::hoverLeaveEvent(QGraphicsSceneHoverEvent *event)
+{
+	Q_UNUSED(event);
+
+	auto animation_ = new QPropertyAnimation(this, "currentSize");
+	animation_->setStartValue(m_current_size);
+	animation_->setEndValue(m_original_size);
+	animation_->setDuration(200);
+	animation_->setEasingCurve(QEasingCurve::OutBack);
+	animation_->start(QAbstractAnimation::DeleteWhenStopped);
+}
+
+void QetGraphicsHandlerItem::setCurrentSize(qreal size)
+{
+	prepareGeometryChange();
+	m_current_size = size;
+	m_handler_rect.setRect(0-m_current_size/2, 0-m_current_size/2, m_current_size, m_current_size);
+	m_br.setRect(-1-m_current_size/2, -1-m_current_size/2, m_current_size+2, m_current_size+2);
+}
+
 /**
 	@brief QetGraphicsHandlerItem::handlerForPoint
 	@param points
diff --git a/sources/QetGraphicsItemModeler/qetgraphicshandleritem.h b/sources/QetGraphicsItemModeler/qetgraphicshandleritem.h
index e8a2b2884..fb0b0f143 100644
--- a/sources/QetGraphicsItemModeler/qetgraphicshandleritem.h
+++ b/sources/QetGraphicsItemModeler/qetgraphicshandleritem.h
@@ -18,7 +18,7 @@
 #ifndef QETGRAPHICSHANDLERITEM_H
 #define QETGRAPHICSHANDLERITEM_H
 
-#include <QGraphicsItem>
+#include <QGraphicsObject>
 #include <QPen>
 
 /**
@@ -33,8 +33,12 @@
 	need to reimplement "sceneEventFilter"
 	for create the modification behavior.
 */
-class QetGraphicsHandlerItem : public QGraphicsItem
+class QetGraphicsHandlerItem : public QGraphicsObject
 {
+		Q_OBJECT
+
+		Q_PROPERTY(qreal currentSize READ currentSize WRITE setCurrentSize)
+
 	public:
 		QetGraphicsHandlerItem(qreal size = 10);
 		void setSize(qreal size);
@@ -45,15 +49,24 @@ class QetGraphicsHandlerItem : public QGraphicsItem
 		
 		void setColor(QColor color);
 
+
 	protected:
 		void paint(QPainter *painter,
 			   const QStyleOptionGraphicsItem *option,
 			   QWidget *widget) override;
+		void hoverEnterEvent(QGraphicsSceneHoverEvent *event) override;
+		void hoverLeaveEvent(QGraphicsSceneHoverEvent *event) override;
+
+		qreal currentSize() const {return m_current_size;}
+		void setCurrentSize(qreal size);
+
+
 
 	private:
 		QRectF m_handler_rect,
 			   m_br;
-		qreal m_size;
+		qreal m_current_size;
+		qreal m_original_size;
 		QColor m_color;
 		QPen m_pen;