From b7d1a0abdd203f522f88233097fa7cc9db9c1601 Mon Sep 17 00:00:00 2001
From: "sashakoshka@tebibyte.media" <sashakoshka@tebibyte.media>
Date: Tue, 25 Jun 2024 02:33:13 -0400
Subject: [PATCH] Add OnEnter for Slider

---
 slider.go | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/slider.go b/slider.go
index 1a138e2..46a6d7e 100644
--- a/slider.go
+++ b/slider.go
@@ -17,6 +17,7 @@ type Slider struct {
 
 	on struct {
 		slide event.FuncBroadcaster
+		enter event.FuncBroadcaster
 	}
 }
 
@@ -89,6 +90,12 @@ func (this *Slider) OnSlide (callback func ()) event.Cookie {
 	return this.on.slide.Connect(callback)
 }
 
+// OnEnter specifies a function to be called when the user stops moving the
+// slider.
+func (this *Slider) OnEnter (callback func ()) event.Cookie {
+	return this.on.enter.Connect(callback)
+}
+
 func (this *Slider) handleKeyDown (key input.Key, numpad bool) {
 	var increment float64; if this.layout.vertical {
 		increment = -0.05
@@ -148,17 +155,21 @@ func (this *Slider) handleMouseDown (button input.Button) {
 		if above {
 			this.SetValue(0)
 			this.on.slide.Broadcast()
+			this.on.enter.Broadcast()
 		} else {
 			this.SetValue(1)
 			this.on.slide.Broadcast()
+			this.on.enter.Broadcast()
 		}
 	case input.ButtonRight:
 		if above {
 			this.SetValue(this.Value() - this.step)
 			this.on.slide.Broadcast()
+			this.on.enter.Broadcast()
 		} else {
 			this.SetValue(this.Value() + this.step)
 			this.on.slide.Broadcast()
+			this.on.enter.Broadcast()
 		}
 	}
 }
@@ -166,6 +177,7 @@ func (this *Slider) handleMouseDown (button input.Button) {
 func (this *Slider) handleMouseUp (button input.Button) {
 	if button != input.ButtonLeft || !this.dragging { return }
 	this.dragging = false
+	this.on.enter.Broadcast()
 }
 
 func (this *Slider) handleMouseMove () {
@@ -177,6 +189,7 @@ func (this *Slider) handleScroll (x, y float64) {
 	delta := (x + y) * 0.005
 	this.SetValue(this.Value() + delta)
 	this.on.slide.Broadcast()
+	this.on.enter.Broadcast()
 }
 
 func (this *Slider) drag () {