From f96350f7c8d3bfe19475ce83a2d713298c2563cc Mon Sep 17 00:00:00 2001
From: Andy Williams <andy@andy.xyz>
Date: Thu, 13 May 2021 17:16:28 +0100
Subject: [PATCH] avoid unneccesary refresh on primitive resize

---
 canvas/circle.go    | 5 +++--
 canvas/line.go      | 4 ++++
 canvas/rectangle.go | 4 ++++
 3 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/canvas/circle.go b/canvas/circle.go
index 6a98f1962e..d691b979a8 100644
--- a/canvas/circle.go
+++ b/canvas/circle.go
@@ -28,11 +28,12 @@ func (l *Circle) Size() fyne.Size {
 // Resize sets a new bottom-right position for the circle object
 // If it has a stroke width this will cause it to Refresh.
 func (l *Circle) Resize(size fyne.Size) {
-	l.Position2 = fyne.NewPos(l.Position1.X+size.Width, l.Position1.Y+size.Height)
-	if l.StrokeWidth == 0 {
+	if size == l.Size() {
 		return
 	}
 
+	l.Position2 = fyne.NewPos(l.Position1.X+size.Width, l.Position1.Y+size.Height)
+
 	Refresh(l)
 }
 
diff --git a/canvas/line.go b/canvas/line.go
index ef4827bccd..66a59f7306 100644
--- a/canvas/line.go
+++ b/canvas/line.go
@@ -30,6 +30,10 @@ func (l *Line) Size() fyne.Size {
 
 // Resize sets a new bottom-right position for the line object and it will then be refreshed.
 func (l *Line) Resize(size fyne.Size) {
+	if size == l.Size() {
+		return
+	}
+
 	l.Position2 = fyne.NewPos(l.Position1.X+size.Width, l.Position1.Y+size.Height)
 	Refresh(l)
 }
diff --git a/canvas/rectangle.go b/canvas/rectangle.go
index 6700a488a1..68a8244ff5 100644
--- a/canvas/rectangle.go
+++ b/canvas/rectangle.go
@@ -26,6 +26,10 @@ func (r *Rectangle) Refresh() {
 // Resize on a rectangle updates the new size of this object.
 // If it has a stroke width this will cause it to Refresh.
 func (r *Rectangle) Resize(s fyne.Size) {
+	if s == r.Size() {
+		return
+	}
+
 	r.baseObject.Resize(s)
 	if r.StrokeWidth == 0 {
 		return