allow for keyboard echoing and improve deleting in input.

content/system/keyboard/keyboard.gd

@@ -1,7 +1,7 @@
 @tool
 extends StaticBody3D
 
-const button_scene = preload("res://content/ui/components/button/button.tscn")
+const button_scene = preload ("res://content/ui/components/button/button.tscn")
 
 @onready var keys = $Keys
 @onready var caps_button = $Caps
@@ -11,10 +11,10 @@ var key_list = [
 	[KEY_1, KEY_2, KEY_3, KEY_4, KEY_5, KEY_6, KEY_7, KEY_8, KEY_9, KEY_0, KEY_ASCIITILDE],
 	[KEY_Q, KEY_W, KEY_E, KEY_R, KEY_T, KEY_Y, KEY_U, KEY_I, KEY_O, KEY_P, KEY_SLASH],
 	[KEY_A, KEY_S, KEY_D, KEY_F, KEY_G, KEY_H, KEY_J, KEY_K, KEY_L, KEY_COLON, KEY_BACKSLASH],
-	[KEY_Z, KEY_X, KEY_C, KEY_V, KEY_B, KEY_N, KEY_M, KEY_COMMA , KEY_PERIOD, KEY_MINUS]
+	[KEY_Z, KEY_X, KEY_C, KEY_V, KEY_B, KEY_N, KEY_M, KEY_COMMA, KEY_PERIOD, KEY_MINUS]
 ]
 
-var caps = false :
+var caps = false:
 	set(value):
 		caps = value
 		update_labels()
@@ -49,12 +49,12 @@ func _ready():
 	)
 
 	caps_button.on_button_down.connect(func():
-		caps = true
+		caps=true
 		_emit_event("key_down", KEY_CAPSLOCK)
 	)
 
 	caps_button.on_button_up.connect(func():
-		caps = false
+		caps=false
 		_emit_event("key_up", KEY_CAPSLOCK)
 	)
 
@@ -73,6 +73,7 @@ func create_key(key: Key):
 	key_node.label = EventKey.key_to_string(key, caps)
 	key_node.focusable = false
 	key_node.font_size = 32
+	key_node.echo = true
 	key_node.set_meta("key", key)
 
 	return key_node
@@ -90,4 +91,3 @@ func _emit_event(type: String, key: Key):
 	event.shift_pressed = caps
 	
 	EventSystem.emit(type, event)
-

content/system/keyboard/keyboard.tscn

@@ -24,6 +24,7 @@ transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0.349964, 0, -0.0700361)
 focusable = false
 label = "backspace"
 icon = true
+echo = true
 metadata/key = 4194308
 
 [node name="Caps" parent="." instance=ExtResource("1_xdpwr")]
@@ -32,12 +33,14 @@ focusable = false
 label = "keyboard_capslock"
 icon = true
 toggleable = true
+echo = false
 
 [node name="Paste" parent="." instance=ExtResource("1_xdpwr")]
 transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0.349964, 0, 0.089964)
 focusable = false
 label = "assignment"
 icon = true
+echo = false
 
 [node name="Keys" type="Node3D" parent="."]
 transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, -0.310036, 0, -0.090036)

content/ui/components/button/button.gd

@@ -7,6 +7,8 @@ signal on_button_down()
 signal on_button_up()
 
 const IconFont = preload ("res://assets/icons/icons.tres")
+const ECHO_WAIT_INITIAL = 0.5
+const ECHO_WAIT_REPEAT = 0.1
 
 @onready var label_node: Label3D = $Body/Label
 @onready var finger_area: Area3D = $FingerArea
@@ -47,6 +49,7 @@ const IconFont = preload ("res://assets/icons/icons.tres")
 		
 @export var toggleable: bool = false
 @export var disabled: bool = false
+@export var echo: bool = false
 @export var initial_active: bool = false
 var external_value: Proxy = null:
 	set(value):
@@ -74,11 +77,26 @@ var active: bool = false:
 
 @onready var animation_player: AnimationPlayer = $AnimationPlayer
 @onready var console = get_node("/root/Main/Console")
+var echo_timer: Timer = null
 
 func _ready():
 	if initial_active:
 		active = true
 
+	if echo:
+		echo_timer = Timer.new()
+		echo_timer.wait_time = ECHO_WAIT_INITIAL
+		echo_timer.one_shot = false
+
+		echo_timer.timeout.connect(func():
+			echo_timer.stop()
+			echo_timer.wait_time=ECHO_WAIT_REPEAT
+			echo_timer.start()
+			on_button_down.emit()
+		)
+
+		add_child(echo_timer)
+
 func update_animation():
 	var length = animation_player.get_animation("down").length
 
@@ -97,6 +115,9 @@ func _on_press_down(event):
 	if toggleable:
 		return
 
+	if echo:
+		echo_timer.start()
+
 	active = true
 	on_button_down.emit()
 	
@@ -113,6 +134,10 @@ func _on_press_up(event):
 		else:
 			on_button_up.emit()
 	else:
+		if echo:
+			echo_timer.stop()
+			echo_timer.wait_time = ECHO_WAIT_INITIAL
+
 		active = false
 		on_button_up.emit()
 

content/ui/components/input/text_handler.gd

@@ -14,7 +14,7 @@ var caret_position: int = 3:
 func set_width(value: float):
 	width = value
 
-func set_text(value: String, insert: bool = false):
+func set_text(value: String, insert: bool=false):
 	var old_text = text
 	text = value
 
@@ -23,34 +23,39 @@ func set_text(value: String, insert: bool = false):
 
 	gap_offsets = _calculate_text_gaps()
 	if insert == false:
-		caret_position += text.length() - old_text.length()
+		var text_diff = text.length() - old_text.length()
+		caret_position += text_diff
+		if text_diff < 0:
+			char_offset = max(0, char_offset + text_diff)
 	else:
 		caret_position = 0
 
 	overflow_index = _calculate_overflow_index()
 	focus_caret()
 
+	print(overflow_index, " ", char_offset, " ", caret_position)
+
 func get_display_text():
 	# In case all chars fit, return the whole text.
-	if overflow_index == -1:
+	if overflow_index == - 1:
 		return text.substr(char_offset)
 	return text.substr(char_offset, overflow_index - char_offset)
 
 func focus_caret():
-	if overflow_index == -1:
+	if overflow_index == - 1:
 		char_offset = 0
 		return
 
 	while caret_position > overflow_index:
 		char_offset += caret_position - overflow_index
 		overflow_index = _calculate_overflow_index()
-		if overflow_index == -1:
+		if overflow_index == - 1:
 			break
 
 	while caret_position < char_offset:
 		char_offset = caret_position
 		overflow_index = _calculate_overflow_index()
-		if overflow_index == -1:
+		if overflow_index == - 1:
 			break
 
 func get_caret_position():
@@ -65,7 +70,7 @@ func _calculate_caret_position(click_pos_x: float):
 		var left = gap_offsets[i] - gap_offsets[char_offset]
 		
 		if click_pos_x < left:
-			return  i - 1
+			return i - 1
 
 	return gap_offsets.size() - 1