Godot Ui Containers

# animated_container_shuffle.gd
# Shuffling items inside a container via code-driven sibling reordering
extends VBoxContainer

func shuffle_children() -> void:
	var children = get_children()
	children.shuffle()
	
	for i in range(children.size()):
		# move_child triggers the Container's sort notification
		move_child(children[i], i)
	
	# Optional: Trigger a slight scale bounce for feedback
	for child in get_children():
		var tween = create_tween()
		tween.tween_property(child, "scale", Vector2(1.1, 1.1), 0.1)
		tween.tween_property(child, "scale", Vector2.ONE, 0.1)

# aspect_ratio_mini_map.gd
# Enforcing aspect ratios for UI elements across window resizes [12]
extends AspectRatioContainer

func _ready() -> void:
	# Forces a 1:1 square for a mini-map
	ratio = 1.0
	# STRETCH_FIT: Scales the child as large as possible without clipping
	stretch_mode = AspectRatioContainer.STRETCH_FIT
	alignment_horizontal = AspectRatioContainer.ALIGNMENT_CENTER
	alignment_vertical = AspectRatioContainer.ALIGNMENT_CENTER

# container_size_flags_pro.gd
# Expertly managing flexible sizing using Stretch Ratios [17]
extends HBoxContainer

func add_weighted_panels() -> void:
	var sidebar := Panel.new()
	var main_content := Panel.new()
	
	# Sidebar: fixed minimum width, no expansion
	sidebar.custom_minimum_size.x = 200
	sidebar.size_flags_horizontal = Control.SIZE_FILL
	
	# Main Content: Expands to fill, taking 4x the remaining space
	main_content.size_flags_horizontal = Control.SIZE_EXPAND_FILL
	main_content.size_flags_stretch_ratio = 4.0
	
	add_child(sidebar)
	add_child(main_content)

# custom_radial_container.gd
# Custom Container logic implementing a radial/circle layout [18]
extends Container

@export var radius: float = 120.0

func _notification(what: int) -> void:
	# Intercept the layout sort signal
	if what == NOTIFICATION_SORT_CHILDREN:
		_do_radial_sort()

func _do_radial_sort() -> void:
	var children := get_children()
	if children.is_empty(): return
	
	var center := size / 2.0
	var step := TAU / children.size()
	
	for i in range(children.size()):
		var child = children[i] as Control
		if not child or not child.visible: continue
		
		# Calculate polar position
		var angle = i * step
		var pos = center + Vector2(cos(angle), sin(angle)) * radius
		
		# Center child on point
		var min_size = child.get_combined_minimum_size()
		var rect = Rect2(pos - (min_size / 2.0), min_size)
		
		# CRITICAL: Always use fit_child_in_rect to enforce layout [18]
		fit_child_in_rect(child, rect)

# dynamic_tab_manager.gd
# Expert management of TabContainer with runtime spawning and closing [13]
extends TabContainer

func add_session_tab(content: Control, title: String, icon: Texture2D) -> void:
	add_child(content)
	var idx := get_tab_idx_from_control(content)
	
	# Override default node-name titles with semantic names
	set_tab_title(idx, title)
	set_tab_icon(idx, icon)
	
	# Focus the new tab
	current_tab = idx

func close_focused_tab() -> void:
	var control := get_current_tab_control()
	if control:
		# TabContainer automatically removes the tab when the child is freed
		control.queue_free()

# performance_anchor_layout.gd
# Optimization: Replacing heavy nested containers with Anchor Layouts [16]
extends Control

# EXPERT NOTE: 10 levels of nested Containers (Margin > VBox > HBox) 
# cause massive recount/layout spikes. Use Anchors for static padding.

func setup_responsive_padding(padding: float = 20.0) -> void:
	# Full rect anchor
	set_anchors_preset(Control.PRESET_FULL_RECT)
	
	# Manual offsets act as responsive margins without the overhead 
	# of a MarginContainer node.
	offset_left = padding
	offset_top = padding
	offset_right = -padding
	offset_bottom = -padding

# skills/ui-containers/scripts/responsive_grid.gd
extends GridContainer

## Responsive Grid Expert Pattern
## Automatically adjusts columns based on container width and item min_size.

class_name ResponsiveGrid

@export var min_item_width := 100.0
@export var max_columns := 10
@export var keep_square_ratio := false

func _ready() -> void:
	resized.connect(_on_resized)
	sort_children.connect(_on_sort_children)
	_recalculate_layout()

func _on_resized() -> void:
	_recalculate_layout()

func _on_sort_children() -> void:
	_recalculate_layout()

func _recalculate_layout() -> void:
	if size.x == 0:
		return
		
	var available_width := size.x
	var h_sep := get_theme_constant("h_separation")
	
	# Calculate how many items fit
	var tentative_cols := floori((available_width + h_sep) / (min_item_width + h_sep))
	tentative_cols = clampi(tentative_cols, 1, max_columns)
	
	if columns != tentative_cols:
		columns = tentative_cols
	
	# Optional: Enforce square aspect ratio on children if they expand
	if keep_square_ratio:
		_enforce_square_ratio()

func _enforce_square_ratio() -> void:
	var item_width := (size.x - (columns - 1) * get_theme_constant("h_separation")) / columns
	
	for child in get_children():
		if child is Control and not child.is_queued_for_deletion():
			child.custom_minimum_size.y = item_width

## EXPERT USAGE:
## 1. Attach to a GridContainer
## 2. Set Min Item Width (e.g., 150px)
## 3. Set Children Size Flags to Expand (Horizontal)
## Result: Grid flows from 1 to N columns automatically as window resizes.

# responsive_inventory_grid.gd
# Auto-adjusting GridContainer columns based on available width [10]
extends GridContainer

@export var item_min_width: float = 64.0

func _ready() -> void:
	# Recalculate layout whenever the window or container resizes
	resized.connect(_on_resized)

func _on_resized() -> void:
	var h_sep := get_theme_constant("h_separation")
	var available_width := size.x
	
	# Compute max columns that fit without manual overflow
	var max_cols := maxi(1, int((available_width + h_sep) / (item_min_width + h_sep)))
	columns = max_cols

# skills/ui-containers/code/responsive_layout_builder.gd
extends Control

## UI Containers Expert Pattern
## Implements Dynamic SizeFlag Mastery and Programmatic Grid Building.

@onready var grid_container: GridContainer = $GridContainer

# 1. Programmatic Grid Building
func populate_shop_inventory(items: Array[Dictionary]) -> void:
    # Professional protocol: Clear existing children safely.
    for child in grid_container.get_children():
        child.queue_free()
        
    for item in items:
        var panel = _create_item_panel(item)
        grid_container.add_child(panel)

func _create_item_panel(data: Dictionary) -> PanelContainer:
    var panel = PanelContainer.new()
    
    # 2. Dynamic SizeFlag Mastery
    # Expert logic: Force the panel to fill available space in the grid.
    panel.size_flags_horizontal = SIZE_EXPAND_FILL
    panel.size_flags_vertical = SIZE_SHRINK_CENTER
    
    var label = Label.new()
    label.text = data.get("name", "Unknown Item")
    label.horizontal_alignment = HORIZONTAL_ALIGNMENT_CENTER
    
    panel.add_child(label)
    return panel

# 3. Layout-Recalculation Hooks
func force_refresh_layout() -> void:
    # Professional protocol: Explicitly trigger the container's sort 
    # if content changes size at runtime (e.g. after a text swap).
    var parent = grid_container.get_parent()
    if parent is Container:
        # Containers automatically sort, but some custom implementations 
        # need a manual nudge or frame wait.
        grid_container.queue_sort()

## EXPERT NOTE:
## Use 'Container-Safe Nesting': Wrap every GridContainer in a 
## 'MarginContainer' to ensure consistent padding without 
## calculating 'position' offsets manually.
## For 'ui-containers', use 'Aspect Ratio Scaling': Wrap important UI 
## elements in an 'AspectRatioContainer' (set to 16:9 or 1:1) to 
## prevent distortion on ultra-wide or vertical mobile displays.
## NEVER use 'position' or 'size' properties directly on children 
## of a Container; always use 'custom_minimum_size' and 'size_flags'. 
## Manual offsets are the #1 cause of broken UI on different resolutions.

# responsive_tag_cloud.gd
# Wrapping item lists using HFlowContainer [8, 15]
extends HFlowContainer

func populate_tags(tags: Array[String]) -> void:
	# Clear existing
	for child in get_children(): child.queue_free()
	
	# HFlowContainer automatically wraps items to next line 
	# based on available width.
	last_wrap_alignment = FlowContainer.LAST_WRAP_ALIGNMENT_BEGIN
	
	for tag_text in tags:
		var lbl = Label.new()
		lbl.text = "#" + tag_text
		add_child(lbl)

# terminal_autoscroll.gd
# Safe ScrollContainer management for logs/chat [4, 5]
extends ScrollContainer

@onready var content_vbox: VBoxContainer = $VBoxContainer

func append_log(log_node: Control) -> void:
	var at_bottom := _is_at_bottom()
	content_vbox.add_child(log_node)
	
	# ANTI-PATTERN PREVENTION: The scrollbar doesn't update until the 
	# layout is recalculated. You MUST wait a frame [5].
	await get_tree().process_frame
	
	if at_bottom:
		scroll_vertical = int(get_v_scroll_bar().max_value)

func _is_at_bottom() -> bool:
	var bar := get_v_scroll_bar()
	# Check if the current scroll is near the bottom (max - page)
	return scroll_vertical >= (bar.max_value - bar.page - 10)

# viewport_3d_preview.gd
# Responsive 3D-in-UI setup using SubViewportContainer [3, 11]
extends SubViewportContainer

@onready var viewport: SubViewport = $SubViewport

func _ready() -> void:
	# stretch = true: The internal viewport size follows the UI container [3]
	stretch = true
	# stretch_shrink: Renders at half resolution for performance while 
	# maintaining UI crispness.
	stretch_shrink = 2 
	
	# Ensure background transparency for HUD overlays
	viewport.transparent_bg = true