From 9856cd327fe4ab5399df5f0d55a4bcdecc190bd0 Mon Sep 17 00:00:00 2001
From: Sasha Koshka <sashakoshka@tebibyte.media>
Date: Sat, 10 Aug 2024 21:44:03 -0400
Subject: [PATCH] Split MimeIcon out from Icon

---
 icon.go     | 30 +++++-------------------------
 mimeicon.go | 47 +++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 52 insertions(+), 25 deletions(-)
 create mode 100644 mimeicon.go

diff --git a/icon.go b/icon.go
index 3300969..19c24f1 100644
--- a/icon.go
+++ b/icon.go
@@ -1,8 +1,6 @@
 package objects
 
 import "git.tebibyte.media/tomo/tomo"
-import "git.tebibyte.media/tomo/tomo/data"
-import "git.tebibyte.media/tomo/tomo/canvas"
 
 // Icon displays a single icon.
 type Icon struct {
@@ -18,35 +16,17 @@ func iconSizeString (size tomo.IconSize) string {
 }
 
 // NewIcon creates a new icon from an icon ID.
-func NewIcon (id tomo.Icon, size tomo.IconSize) *Icon {
+func NewIcon (icon tomo.Icon, size tomo.IconSize) *Icon {
 	this := &Icon {
 		Box: tomo.NewBox(),
 	}
 	this.SetRole(tomo.R("objects", "Icon"))
-	this.SetTag(iconSizeString(size), true)
-	this.setTexture(id.Texture(size))
+	this.SetIcon(icon, size)
 	return this
 }
 
-// NewMimeIcon creates a new icon from a MIME type.
-func NewMimeIcon (mime data.Mime, size tomo.IconSize) *Icon {
-	this := &Icon {
-		Box: tomo.NewBox(),
-	}
-	this.SetRole(tomo.R("objects", "Icon"))
+// SetIcon sets the icon.
+func (this *Icon) SetIcon (icon tomo.Icon, size tomo.IconSize) {
+	this.SetAttr(tomo.AIcon(icon, size))
 	this.SetTag(iconSizeString(size), true)
-	this.setTexture(tomo.MimeIcon(mime, size))
-	return this
-}
-
-func (this *Icon) setTexture (texture canvas.Texture) {
-	
-	this.SetAttr(tomo.ATexture(texture))
-	this.SetAttr(tomo.ATextureMode(tomo.TextureModeCenter))
-	if texture == nil {
-		this.SetAttr(tomo.AMinimumSize(0, 0))
-	} else {
-		bounds := texture.Bounds()
-		this.SetAttr(tomo.AttrMinimumSize(bounds.Max.Sub(bounds.Min)))
-	}
 }
diff --git a/mimeicon.go b/mimeicon.go
new file mode 100644
index 0000000..a4afba9
--- /dev/null
+++ b/mimeicon.go
@@ -0,0 +1,47 @@
+package objects
+
+import "git.tebibyte.media/tomo/tomo"
+import "git.tebibyte.media/tomo/tomo/data"
+import "git.tebibyte.media/tomo/tomo/canvas"
+
+// MimeIcon displays an icon of a MIME type.
+type MimeIcon struct {
+	tomo.Box
+	mime data.Mime
+	size tomo.IconSize
+}
+
+// NewMimeIcon creates a new icon from a MIME type.
+func NewMimeIcon (mime data.Mime, size tomo.IconSize) *MimeIcon {
+	this := &MimeIcon {
+		Box: tomo.NewBox(),
+	}
+	this.SetRole(tomo.R("objects", "Icon"))
+	this.SetIcon(mime, size)
+	this.OnIconSetChange(this.handleIconSetChange)
+	return this
+}
+
+// SetIcon sets the MIME type and size of the icon.
+func (this *MimeIcon) SetIcon (mime data.Mime, size tomo.IconSize) {
+	if this.mime == mime && this.size == size { return }
+	this.mime = mime
+	this.size = size
+	this.SetTag(iconSizeString(size), true)
+	this.setTexture(tomo.MimeIconTexture(mime, size))
+}
+
+func (this *MimeIcon) handleIconSetChange () {
+	this.setTexture(tomo.MimeIconTexture(this.mime, this.size))
+}
+
+func (this *MimeIcon) setTexture (texture canvas.Texture) {
+	this.SetAttr(tomo.ATexture(texture))
+	this.SetAttr(tomo.ATextureMode(tomo.TextureModeCenter))
+	if texture == nil {
+		this.SetAttr(tomo.AMinimumSize(0, 0))
+	} else {
+		bounds := texture.Bounds()
+		this.SetAttr(tomo.AttrMinimumSize(bounds.Max.Sub(bounds.Min)))
+	}
+}