ScrollPicker.gd
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| extends ScrollContainer | |
| class_name GameScrollPicker | |
| export (Array, String) var items := [] setget set_items | |
| export (Resource) var label_theme | |
| export var label_height := 50 | |
| onready var _items := $Items as VBoxContainer | |
| func set_items(items : Array) -> void: | |
| for i in range(2): | |
| var label = create_label('') | |
| _items.add_child(label) | |
| for i in items.size(): | |
| var label = create_label(items[i]) | |
| _items.add_child(label) | |
| for i in range(1): | |
| var label = create_label('') | |
| _items.add_child(label) | |
| func create_label(text : String) -> Label: | |
| var label = Label.new() | |
| label.text = text | |
| label.theme = label_theme | |
| label.align = label.ALIGN_CENTER | |
| label.valign = label.VALIGN_CENTER | |
| label.rect_min_size = Vector2(0, label_height) | |
| return label | |
| func _process(_delta: float) -> void: | |
| if not label_height: | |
| return | |
| rect_min_size = Vector2(0, label_height * 5) | |
| for child in _items.get_children(): | |
| if child.rect_position.y == scroll_vertical + (label_height * 2): | |
| child.modulate.a = 1.0 | |
| elif child.rect_position.y == scroll_vertical + (label_height * 1) or child.rect_position.y == scroll_vertical + (label_height * 3): | |
| child.modulate.a = 0.5 | |
| else: | |
| child.modulate.a = 0.1 | |
| """ | |
| Original: https://github.com/godotengine/godot/issues/21137 | |
| Helper Script for ScrollContainer to let them scroll with InputListeners inside. | |
| Buttons inside should react to release, in order to be not activated during scroll. | |
| Does not work with Touch Screen Buttons as they handle the input before. | |
| """ | |
| export (Vector2) var delta_for_swipe := Vector2(8, 8) | |
| var look_for_swipe := false | |
| var swiping := false | |
| var swipe_start : Vector2 | |
| var swipe_mouse_start : Vector2 | |
| var swipe_mouse_times := [] | |
| var swipe_mouse_positions := [] | |
| var tween : Tween | |
| func _input(ev) -> void: | |
| if !is_visible_in_tree(): | |
| return | |
| if ev is InputEventScreenDrag and swiping: | |
| accept_event() | |
| return | |
| if ev is InputEventMouseButton: | |
| if ev.pressed and get_viewport_transform().xform(get_global_rect()).has_point(ev.global_position): | |
| look_for_swipe = true | |
| swipe_mouse_start = ev.global_position | |
| elif swiping: | |
| swipe_mouse_times.append(OS.get_ticks_msec()) | |
| swipe_mouse_positions.append(ev.global_position) | |
| var source := Vector2(get_h_scroll(), get_v_scroll()) | |
| var idx := swipe_mouse_times.size() - 1 | |
| var now := OS.get_ticks_msec() | |
| var cutoff := now - 100 | |
| for i in range(swipe_mouse_times.size() - 1, -1, -1): | |
| if swipe_mouse_times[i] >= cutoff: | |
| idx = i | |
| else: break | |
| var flick_start : Vector2 = swipe_mouse_positions[idx] | |
| var flick_dur := min(0.3, (ev.global_position - flick_start).length() / 1000) | |
| if flick_dur > 0.0: | |
| tween = Tween.new() | |
| add_child(tween) | |
| var delta : Vector2 = ev.global_position - flick_start | |
| var target := source - delta * flick_dur * 15.0 | |
| tween.interpolate_method(self, 'set_h_scroll', source.x, stepify(target.x, label_height), flick_dur, Tween.TRANS_LINEAR, Tween.EASE_OUT) | |
| tween.interpolate_method(self, 'set_v_scroll', source.y, stepify(target.y, label_height), flick_dur, Tween.TRANS_LINEAR, Tween.EASE_OUT) | |
| tween.interpolate_callback(tween, flick_dur, 'queue_free') | |
| tween.start() | |
| swiping = false | |
| swipe_mouse_times = [] | |
| swipe_mouse_positions = [] | |
| else: | |
| look_for_swipe = false | |
| if ev is InputEventMouseMotion: | |
| if look_for_swipe: | |
| var delta = ev.global_position - swipe_mouse_start | |
| if abs(delta.x) > delta_for_swipe.x or abs(delta.y) > delta_for_swipe.y: | |
| swiping = true | |
| look_for_swipe = false | |
| swipe_start = Vector2(get_h_scroll(), get_v_scroll()) | |
| swipe_mouse_start = ev.global_position | |
| swipe_mouse_times = [OS.get_ticks_msec()] | |
| swipe_mouse_positions = [swipe_mouse_start] | |
| if is_instance_valid(tween) and tween is Tween: | |
| tween.stop_all() | |
| if swiping: | |
| var delta : Vector2 = ev.global_position - swipe_mouse_start | |
| set_h_scroll(stepify(swipe_start.x - delta.x, label_height)) | |
| set_v_scroll(stepify(swipe_start.y - delta.y, label_height)) | |
| swipe_mouse_times.append(OS.get_ticks_msec()) | |
| swipe_mouse_positions.append(ev.global_position) | |
| ev.position = Vector2.ZERO |