Add popup label to show terminal and panel size on resize

Shows the terminal cols/rows (if a terminal is open) and the size of the
the tab_container in pixels. Shows centered for 1 second, then closes.

addons/godot_xterm/editor_plugins/terminal/terminal_panel.gd

@@ -32,6 +32,12 @@ onready var tabbar_container: HBoxContainer = $VBoxContainer/TabbarContainer
 onready var add_button: ToolButton = $VBoxContainer/TabbarContainer/Tabs/AddButton
 onready var tab_container: TabContainer = $VBoxContainer/TabContainer
 onready var terminal_popup_menu: PopupMenu = $VBoxContainer/TerminalPopupMenu
+
+# Size label.
+# Used to show the size of the terminal (rows/cols) and panel (pixels) when resized.
+onready var size_label: Label = $SizeLabel
+onready var size_label_timer: Timer = $SizeLabel/SizeLabelTimer
+
 onready var ready := true
 
 var _theme := Theme.new()
@@ -62,6 +68,7 @@ func _update_settings() -> void:
 
 	var editor_scale: float = editor_interface.get_editor_scale()
 	rect_min_size = Vector2(0, tabbar_container.rect_size.y + 182) * editor_scale
+	rect_size.y = 415
 
 	tabs.tab_close_display_policy = Tabs.CLOSE_BUTTON_SHOW_ALWAYS
 
@@ -239,3 +246,26 @@ func _on_TerminalPopupMenu_id_pressed(id):
 func _on_Tabs_reposition_active_tab_request(idx_to):
 	var active = tab_container.get_child(tab_container.current_tab)
 	tab_container.move_child(active, idx_to)
+
+
+func _on_Panel_resized():
+	if not size_label:
+		return
+
+	var size = tab_container.rect_size
+	if tabs.get_tab_count() > 0:
+		var terminal = tab_container.get_child(tabs.current_tab)
+		var cols = terminal.cols
+		var rows = terminal.rows
+		size_label.text = "Size: %d cols; %d rows\n(%d x %d px)" % [cols, rows, size.x, size.y]
+	else:
+		size_label.text = "Size:\n(%d x %d px)" % [size.x, size.y]
+
+	size_label.visible = true
+	size_label_timer.wait_time = 1
+	size_label_timer.start()
+
+
+func _on_SizeLabelTimer_timeout():
+	if size_label:
+		size_label.visible = false

addons/godot_xterm/editor_plugins/terminal/terminal_panel.tscn

@@ -112,9 +112,44 @@ __meta__ = {
 "_edit_use_anchors_": false
 }
 
+[node name="SizeLabel" type="Label" parent="."]
+visible = false
+anchor_left = 0.5
+anchor_top = 0.5
+anchor_right = 0.5
+anchor_bottom = 0.5
+margin_left = -52.0
+margin_top = -15.5
+margin_right = 52.0
+margin_bottom = 15.5
+text = "Size: %d rows; %d cols
+(%d x %d)"
+align = 1
+__meta__ = {
+"_edit_use_anchors_": false
+}
+
+[node name="Panel" type="Panel" parent="SizeLabel"]
+show_behind_parent = true
+anchor_right = 1.0
+anchor_bottom = 1.0
+margin_left = -5.0
+margin_top = -5.0
+margin_right = 5.0
+margin_bottom = 5.0
+grow_horizontal = 2
+grow_vertical = 2
+__meta__ = {
+"_edit_use_anchors_": false
+}
+
+[node name="SizeLabelTimer" type="Timer" parent="SizeLabel"]
+
+[connection signal="resized" from="." to="." method="_on_Panel_resized"]
 [connection signal="reposition_active_tab_request" from="VBoxContainer/TabbarContainer/Tabs" to="." method="_on_Tabs_reposition_active_tab_request"]
 [connection signal="tab_changed" from="VBoxContainer/TabbarContainer/Tabs" to="." method="_on_Tabs_tab_changed"]
 [connection signal="tab_close" from="VBoxContainer/TabbarContainer/Tabs" to="." method="_on_Tabs_tab_close"]
 [connection signal="pressed" from="VBoxContainer/TabbarContainer/Tabs/AddButton" to="." method="_on_AddButton_pressed"]
 [connection signal="gui_input" from="VBoxContainer/TabContainer" to="." method="_on_TabContainer_gui_input"]
 [connection signal="id_pressed" from="VBoxContainer/TerminalPopupMenu" to="." method="_on_TerminalPopupMenu_id_pressed"]
+[connection signal="timeout" from="SizeLabel/SizeLabelTimer" to="." method="_on_SizeLabelTimer_timeout"]