Implement date picker prototype.

2 files changed, 265 insertions, 0 deletions

diff --git a/date_picker/date_picker.tscn b/date_picker/date_picker.tscn
new file mode 100644
index 0000000..88f98d8
--- /dev/null
+++ b/date_picker/date_picker.tscn
@@ -0,0 +1,147 @@
+[gd_scene load_steps=2 format=2]
+
+[ext_resource path="res://date_picker/scroll_picker.gd" type="Script" id=1]
+
+[node name="date_picker" type="HBoxContainer"]
+anchor_right = 1.0
+anchor_bottom = 1.0
+mouse_filter = 2
+alignment = 1
+__meta__ = {
+"_edit_use_anchors_": false
+}
+
+[node name="day_scroll" type="Control" parent="."]
+margin_left = 5.0
+margin_right = 239.0
+margin_bottom = 1280.0
+rect_min_size = Vector2( 234, 0 )
+script = ExtResource( 1 )
+__meta__ = {
+"_edit_use_anchors_": false
+}
+
+[node name="label" type="Label" parent="day_scroll"]
+anchor_right = 1.0
+text = "day"
+align = 1
+__meta__ = {
+"_edit_use_anchors_": false
+}
+
+[node name="value_previous" type="Label" parent="day_scroll"]
+anchor_right = 1.0
+margin_bottom = 80.0
+mouse_filter = 1
+align = 1
+__meta__ = {
+"_edit_use_anchors_": false
+}
+
+[node name="value" type="Label" parent="day_scroll"]
+anchor_right = 1.0
+margin_top = 80.0
+margin_bottom = 160.0
+mouse_filter = 1
+align = 1
+__meta__ = {
+"_edit_use_anchors_": false
+}
+
+[node name="value_next" type="Label" parent="day_scroll"]
+anchor_right = 1.0
+margin_top = 160.0
+margin_bottom = 240.0
+mouse_filter = 1
+align = 1
+__meta__ = {
+"_edit_use_anchors_": false
+}
+
+[node name="month_scroll" type="Control" parent="."]
+margin_left = 243.0
+margin_right = 477.0
+margin_bottom = 1280.0
+rect_min_size = Vector2( 234, 0 )
+script = ExtResource( 1 )
+
+[node name="label" type="Label" parent="month_scroll"]
+anchor_right = 1.0
+text = "month"
+align = 1
+__meta__ = {
+"_edit_use_anchors_": false
+}
+
+[node name="value_previous" type="Label" parent="month_scroll"]
+anchor_right = 1.0
+margin_bottom = 80.0
+mouse_filter = 1
+align = 1
+__meta__ = {
+"_edit_use_anchors_": false
+}
+
+[node name="value" type="Label" parent="month_scroll"]
+anchor_right = 1.0
+margin_top = 80.0
+margin_bottom = 160.0
+mouse_filter = 1
+align = 1
+__meta__ = {
+"_edit_use_anchors_": false
+}
+
+[node name="value_next" type="Label" parent="month_scroll"]
+anchor_right = 1.0
+margin_top = 160.0
+margin_bottom = 240.0
+mouse_filter = 1
+align = 1
+__meta__ = {
+"_edit_use_anchors_": false
+}
+
+[node name="year_scroll" type="Control" parent="."]
+margin_left = 481.0
+margin_right = 715.0
+margin_bottom = 1280.0
+rect_min_size = Vector2( 234, 0 )
+script = ExtResource( 1 )
+
+[node name="label" type="Label" parent="year_scroll"]
+anchor_right = 1.0
+text = "year"
+align = 1
+__meta__ = {
+"_edit_use_anchors_": false
+}
+
+[node name="value_previous" type="Label" parent="year_scroll"]
+anchor_right = 1.0
+margin_bottom = 80.0
+mouse_filter = 1
+align = 1
+__meta__ = {
+"_edit_use_anchors_": false
+}
+
+[node name="value" type="Label" parent="year_scroll"]
+anchor_right = 1.0
+margin_top = 80.0
+margin_bottom = 160.0
+mouse_filter = 1
+align = 1
+__meta__ = {
+"_edit_use_anchors_": false
+}
+
+[node name="value_next" type="Label" parent="year_scroll"]
+anchor_right = 1.0
+margin_top = 160.0
+margin_bottom = 240.0
+mouse_filter = 1
+align = 1
+__meta__ = {
+"_edit_use_anchors_": false
+}
diff --git a/date_picker/scroll_picker.gd b/date_picker/scroll_picker.gd
new file mode 100644
index 0000000..ba70084
--- /dev/null
+++ b/date_picker/scroll_picker.gd
@@ -0,0 +1,118 @@
+extends Control
+
+const MAX_POINTERS = 10
+
+var pointer: Dictionary
+var value: float = 0.0
+var anchor: float = 0.0
+var pointer_id: int = -1
+var start_pos: float = 0.0
+var pos: float = 0.0
+
+
+func _ready():
+	pointer = {
+			index = -1,
+			initial_position = Vector2.ZERO,
+			current_position = Vector2.ZERO,
+			relative = Vector2.ZERO,
+			velocity = Vector2.ZERO,
+			is_active = false,
+			timestamp = 0
+		}
+
+
+
+func _process(delta: float):
+#	$label.text = "%s" % pointer.index
+	pointer.velocity *= clamp((1.0 - 5.5 * delta), 0.0, 1.0) # pow(1.0-0.995, delta)
+	if pointer.is_active:
+		value = anchor + (pointer.current_position.y - pointer.initial_position.y)
+	elif is_zero_approx(pointer.velocity.y) == false:
+		value += pointer.velocity.y * delta
+		if abs(pointer.velocity.y) < 50.0:
+			var max_value := 10
+			var scroll_unit_height := 80
+			var normalized_value := -value / scroll_unit_height
+			var normalized_int_value := round(normalized_value) as int
+			var logic_value := fposmod(normalized_int_value, max_value)
+			var fix := ((normalized_int_value as float) - normalized_value) * scroll_unit_height
+			value -= fix * 5.0 * delta
+	
+#	pointer.timestamp = OS.get_ticks_msec()
+#	($test as TextureRect).rect_global_position.y = value
+#	$debug.text = "value: %s\nvelocity: %s\n%s" % [value, pointer.velocity, pointer.relative]
+	var current_pos = value
+	var turn_over := 800
+	if current_pos >= turn_over || current_pos < 0.0:
+		value = fposmod(current_pos, turn_over)
+#	elif current_pos < 0:
+#		value = 800 - current_pos
+	
+	
+	var max_value := 10
+	var scroll_unit_height := 40
+	var normalized_value := -value / scroll_unit_height
+	var normalized_int_value := round(normalized_value) as int
+	var logic_value := fposmod(normalized_int_value, max_value)
+	var logic_next_value := fposmod(normalized_int_value + 1, max_value)
+	var logic_previous_value := fposmod(normalized_int_value - 1, max_value)
+	
+	var value_base_position := 140.0 # 180.0
+	var value_next_base_position := 180.0 # 260.0
+	var value_previous_base_position := 100.0
+	
+	$value.text = "%d" % logic_value
+	$value_next.text = "%d" % logic_next_value
+	$value_previous.text = "%d" % logic_previous_value
+#	$debug.text = "%s" % normalized_value
+	
+	($value as Label).rect_position.y = value_base_position - (normalized_value - normalized_int_value) * scroll_unit_height
+	($value_previous as Label).rect_position.y = value_previous_base_position - (normalized_value - normalized_int_value) * scroll_unit_height
+	($value_next as Label).rect_position.y = value_next_base_position - (normalized_value - normalized_int_value) * scroll_unit_height
+	
+#	($value as Label).modulate.a = (scroll_unit_height - (normalized_value - normalized_int_value) * scroll_unit_height) / (scroll_unit_height as float)
+#	$debug.text = "%s ..." % [normalized_int_value - normalized_value]
+	($value_next as Label).modulate.a = ((normalized_value - normalized_int_value) + 0.5)
+	($value_previous as Label).modulate.a = ((normalized_int_value - normalized_value) + 0.5)
+#	($value_previous as Label).modulate.a = ((normalized_value + normalized_int_value) * scroll_unit_height) / (scroll_unit_height as float)
+#
+#func _input(event: InputEvent):
+#	$log.text += "> input: %s\n" % event.to_string()
+#	if event is InputEventScreenTouch && event.pressed == false:
+#		pointer.index = -1
+
+func _gui_input(event: InputEvent):
+#	get_tree().set_input_as_handled()
+#	if event is InputEventScreenTouch && event.pressed == false:
+#		$label.text = "AUTCH"
+#	$log.text += "> event: %s\n" % event.to_string()
+
+	if event is InputEventScreenTouch:
+#	if (event is InputEventScreenTouch && pointer.is_active && pointer.index == event.index
+#	|| event is InputEventScreenTouch && pointer.is_active == false):
+		var touch := event as InputEventScreenTouch
+		pointer.is_active = event.pressed
+		pointer.current_position = touch.position
+		var time := OS.get_ticks_msec()
+		if pointer.is_active:
+			pointer.index = touch.index
+			pointer.initial_position = touch.position
+			anchor = value
+		else:
+			pointer.index = -1
+#		elif abs(pointer.timestamp - time) > 50.0:
+#			pointer.velocity = Vector2.ZERO
+#		if pointer.is_active == false:
+#			$output.text += "%10d: touch %d\n" % [abs(pointer.timestamp - time), touch.index]
+	
+	if event is InputEventScreenDrag: # && pointer.index == event.index:
+		var drag := event as InputEventScreenDrag
+		pointer.current_position = drag.position
+		pointer.velocity = drag.speed
+#		$label.text = "%s"%drag.speed
+		pointer.relative = drag.relative
+		pointer.timestamp = OS.get_ticks_msec()
+#		$output.text += "%10d: drag %d\n" % [pointer.timestamp, drag.index]
+
+