WIP: audio clip controls and UI

Scripts/AudioClip.gd

@@ -0,0 +1,63 @@
+class_name AudioClip
+extends Panel
+
+@export var start_time: float = 0.0
+@export var end_time: float = 0.0
+@export var track_idx: int = 0
+
+var timeline: Timeline
+
+var dragging: bool
+var selected: bool
+
+func _ready():
+	timeline = get_parent()
+
+func _input(event):
+	var rect = get_global_rect()
+	var mouse_position = get_global_mouse_position()
+
+	if event is InputEventMouseButton:
+		if event.pressed and event.button_mask == MOUSE_BUTTON_LEFT:
+			if selected:
+				mouse_default_cursor_shape = CURSOR_MOVE
+				dragging = true
+			else:
+				dragging = false
+				mouse_default_cursor_shape = CURSOR_ARROW
+			if rect.has_point(mouse_position):
+				selected = true
+				make_selected()
+				return
+			else:
+				selected = false
+				make_deselected()
+				return
+		
+		if !event.pressed and dragging:
+			dragging = false
+			mouse_default_cursor_shape = CURSOR_ARROW
+
+	if selected and dragging:
+		if event is InputEventMouseMotion:
+			var movement = event.relative.x / timeline.get_pixels_per_unit() * timeline.time_interval
+
+			start_time += movement
+			end_time += movement
+
+			if event.is_command_or_control_pressed():
+				start_time = snapped(start_time, timeline.time_interval)
+				end_time = snapped(end_time, timeline.time_interval)
+
+			timeline.queue_sort()
+	pass
+
+func make_selected():
+	var color = get_theme_color("selected_modulate", "AudioClip")
+	modulate = color 
+	pass
+
+func make_deselected():
+	var color = get_theme_color("deselected_modulate", "AudioClip")
+	modulate = color 
+	pass