From 4eb59e8492711453ff000f5708397e9097fb9409 Mon Sep 17 00:00:00 2001
From: kleonc <9283098+kleonc@users.noreply.github.com>
Date: Fri, 24 Sep 2021 18:55:58 +0200
Subject: [PATCH] TexturePreview Update text when texture is being changed

---
 editor/plugins/texture_editor_plugin.cpp | 31 ++++++++++++++++--------
 editor/plugins/texture_editor_plugin.h   |  3 +++
 2 files changed, 24 insertions(+), 10 deletions(-)

diff --git a/editor/plugins/texture_editor_plugin.cpp b/editor/plugins/texture_editor_plugin.cpp
index 016bc298636..caeadeb3acd 100644
--- a/editor/plugins/texture_editor_plugin.cpp
+++ b/editor/plugins/texture_editor_plugin.cpp
@@ -62,6 +62,25 @@ void TexturePreview::_notification(int p_what) {
 	}
 }
 
+void TexturePreview::_update_metadata_label_text() {
+	Ref<Texture> texture = texture_display->get_texture();
+
+	String format;
+	if (Object::cast_to<ImageTexture>(*texture)) {
+		format = Image::get_format_name(Object::cast_to<ImageTexture>(*texture)->get_format());
+	} else if (Object::cast_to<StreamTexture>(*texture)) {
+		format = Image::get_format_name(Object::cast_to<StreamTexture>(*texture)->get_format());
+	} else {
+		format = texture->get_class();
+	}
+
+	metadata_label->set_text(itos(texture->get_width()) + "x" + itos(texture->get_height()) + " " + format);
+}
+
+void TexturePreview::_bind_methods() {
+	ClassDB::bind_method(D_METHOD("_update_metadata_label_text"), &TexturePreview::_update_metadata_label_text);
+}
+
 TexturePreview::TexturePreview(Ref<Texture> p_texture, bool p_show_metadata) {
 	checkerboard = memnew(TextureRect);
 	checkerboard->set_stretch_mode(TextureRect::STRETCH_TILE);
@@ -78,16 +97,8 @@ TexturePreview::TexturePreview(Ref<Texture> p_texture, bool p_show_metadata) {
 	if (p_show_metadata) {
 		metadata_label = memnew(Label);
 
-		String format;
-		if (Object::cast_to<ImageTexture>(*p_texture)) {
-			format = Image::get_format_name(Object::cast_to<ImageTexture>(*p_texture)->get_format());
-		} else if (Object::cast_to<StreamTexture>(*p_texture)) {
-			format = Image::get_format_name(Object::cast_to<StreamTexture>(*p_texture)->get_format());
-		} else {
-			format = p_texture->get_class();
-		}
-
-		metadata_label->set_text(itos(p_texture->get_width()) + "x" + itos(p_texture->get_height()) + " " + format);
+		_update_metadata_label_text();
+		p_texture->connect("changed", this, "_update_metadata_label_text");
 
 		// It's okay that these colors are static since the grid color is static too.
 		metadata_label->add_color_override("font_color", Color::named("white"));
diff --git a/editor/plugins/texture_editor_plugin.h b/editor/plugins/texture_editor_plugin.h
index 8c57901d43c..ca71a25ead2 100644
--- a/editor/plugins/texture_editor_plugin.h
+++ b/editor/plugins/texture_editor_plugin.h
@@ -44,8 +44,11 @@ private:
 	TextureRect *checkerboard = nullptr;
 	Label *metadata_label = nullptr;
 
+	void _update_metadata_label_text();
+
 protected:
 	void _notification(int p_what);
+	static void _bind_methods();
 
 public:
 	TextureRect *get_texture_display();