feat: complete mobile UI implementation

project/ui/exchange_ui.gd

@@ -27,6 +27,9 @@ var _offered_cells := {}
 var _self_grid: GridContainer
 var _exchange_cells: Dictionary = {}
 var item_mouse: Node
+var _mobile_mode := false
+var _mobile_inventory_scroll: ScrollContainer
+var _mobile_inventory_list: VBoxContainer
 
 const EXCHANGE_SLOT_COUNT := 12
 const INVENTORY_WINDOW := 1
@@ -49,6 +52,15 @@ func setup(m2client: Node, parent: Node, proto_node: Node = null) -> void:
 func is_open() -> bool:
 	return _root != null and _root.visible
 
+func get_mobile_window() -> Control:
+	return _root
+
+func set_mobile_mode(enabled: bool) -> void:
+	_mobile_mode = enabled
+	if _root:
+		_apply_mobile_layout()
+		_refresh_mobile_inventory()
+
 func close() -> void:
 	if item_mouse and item_mouse.has_method("unregister_owner"):
 		item_mouse.unregister_owner(self)
@@ -87,6 +99,7 @@ func offer(inv_window: int, inv_cell: int) -> void:
 		_offered_cells[key] = true
 		_next_display = (_next_display + 1) % 12
 		_status.text = ""
+		_refresh_mobile_inventory()
 	else:
 		_status.text = "交易请求发送失败"
 
@@ -135,6 +148,56 @@ func refresh() -> void:
 	_accept_btn.modulate = Color(0.5, 1, 0.5) if me else Color(1, 1, 1)
 	_root.get_node("PeerAccept").text = "对方: 已接受" if peer else "对方: 未接受"
 	_status.text = ""
+	_refresh_mobile_inventory()
+
+func _apply_mobile_layout() -> void:
+	if _root == null:
+		return
+	if _mobile_mode:
+		# The inventory candidate list is part of the same hosted surface, so it
+		# scales and receives the same safe-area treatment as the trade window.
+		_root.size = Vector2(688, 400)
+		_root.position = Vector2(-344, -200)
+		if _mobile_inventory_scroll:
+			_mobile_inventory_scroll.position = Vector2(452, 54)
+			_mobile_inventory_scroll.size = Vector2(224, 280)
+			_mobile_inventory_scroll.visible = true
+	else:
+		_root.size = Vector2(440, 360)
+		_root.position = Vector2(-220, -180)
+		if _mobile_inventory_scroll:
+			_mobile_inventory_scroll.position = Vector2.ZERO
+			_mobile_inventory_scroll.size = Vector2.ZERO
+			_mobile_inventory_scroll.visible = false
+
+func _refresh_mobile_inventory() -> void:
+	if not _mobile_mode or _mobile_inventory_list == null or not is_open():
+		return
+	for child in _mobile_inventory_list.get_children():
+		child.queue_free()
+	var inventory: Array = client.get_inventory() if client and client.has_method("get_inventory") else []
+	var shown := 0
+	for item in inventory:
+		var cell := int(item.get("cell", -1))
+		var vnum := int(item.get("vnum", 0))
+		if cell < 0 or vnum <= 0:
+			continue
+		if _offered_cells.has("%d:%d" % [INVENTORY_WINDOW, cell]):
+			continue
+		var button := Button.new()
+		button.alignment = HORIZONTAL_ALIGNMENT_LEFT
+		button.text = "%s ×%d  · 点按加入" % [_name_of(vnum), int(item.get("count", 1))]
+		button.custom_minimum_size = Vector2(214, 34)
+		button.tooltip_text = _tooltip_for(item)
+		var captured_cell := cell
+		button.pressed.connect(func() -> void: offer(INVENTORY_WINDOW, captured_cell))
+		_mobile_inventory_list.add_child(button)
+		shown += 1
+	if shown == 0:
+		var empty := Label.new()
+		empty.text = "（没有可交易物品）"
+		empty.add_theme_font_size_override("font_size", 12)
+		_mobile_inventory_list.add_child(empty)
 
 func _item_at(inv_window: int, inv_cell: int) -> Dictionary:
 	if client == null:
@@ -216,6 +279,7 @@ func _drop_to_slot(payload: Dictionary, display_pos: int) -> bool:
 		_status.text = "交易请求发送失败"
 		return false
 	_offered_cells[key] = true
+	_refresh_mobile_inventory()
 	return true
 
 func _fill(box: VBoxContainer, rows: Array) -> void:
@@ -256,6 +320,11 @@ func _on_accept() -> void:
 	else:
 		_status.text = "接受请求发送失败"
 
+func _on_cancel() -> void:
+	if client and client.has_method("exchange_cancel"):
+		client.exchange_cancel()
+	close()
+
 func _capture_anchor() -> void:
 	if _anchor_valid or client == null or not client.has_method("get_main_vid") \
 			or not client.has_method("get_entity"):
@@ -369,6 +438,9 @@ func _build(parent: Node) -> void:
 	_gold_input = LineEdit.new()
 	_gold_input.placeholder_text = "金币"
 	_gold_input.custom_minimum_size = Vector2(90, 0)
+	# Godot will open the native numeric keyboard on Android/iOS while the
+	# validation below remains authoritative for desktop and hardware keyboards.
+	_gold_input.virtual_keyboard_type = LineEdit.KEYBOARD_TYPE_NUMBER
 	bottom.add_child(_gold_input)
 	var put := Button.new()
 	put.text = "放金币"
@@ -380,5 +452,14 @@ func _build(parent: Node) -> void:
 	bottom.add_child(_accept_btn)
 	var cancel := Button.new()
 	cancel.text = "取消"
-	cancel.pressed.connect(func() -> void: client.exchange_cancel())
+	cancel.pressed.connect(_on_cancel)
 	bottom.add_child(cancel)
+
+	_mobile_inventory_scroll = ScrollContainer.new()
+	_mobile_inventory_scroll.name = "MobileInventory"
+	_mobile_inventory_scroll.visible = false
+	_mobile_inventory_list = VBoxContainer.new()
+	_mobile_inventory_list.add_theme_constant_override("separation", 4)
+	_mobile_inventory_scroll.add_child(_mobile_inventory_list)
+	_root.add_child(_mobile_inventory_scroll)
+	_apply_mobile_layout()