forked from datawhale/whale-town-front
220 lines
7.1 KiB
GDScript
220 lines
7.1 KiB
GDScript
extends PanelContainer
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# ============================================================================
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# ChatMessage.gd - 聊天消息气泡组件
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# ============================================================================
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# 显示单条聊天消息的 UI 组件
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#
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# 核心职责:
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# - 显示消息发送者、内容、时间戳
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# - 区分自己和他人的消息样式
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# - 自动格式化时间戳
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#
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# 使用方式:
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# var message := chat_message_scene.instantiate()
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# message.set_message("PlayerName", "Hello!", timestamp, false)
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#
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# 注意事项:
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# - 使用 @onready 缓存节点引用
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# - 最大宽度限制为 400 像素
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# ============================================================================
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class_name ChatMessage
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# ============================================================================
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# 导出参数
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# ============================================================================
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# 最大宽度（像素）
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@export var max_width: int = 400
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# ============================================================================
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# 节点引用
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# ============================================================================
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# 用户名标签
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var username_label: Label
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# 时间戳标签
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var timestamp_label: Label
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# 内容标签
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var content_label: RichTextLabel
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# 用户信息容器
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var user_info_container: HBoxContainer
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# ============================================================================
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# 生命周期方法
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# ============================================================================
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func _ready() -> void:
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_cache_node_refs()
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func _cache_node_refs() -> void:
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if not username_label:
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username_label = get_node_or_null("VBoxContainer/UserInfoContainer/UsernameLabel")
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if not timestamp_label:
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timestamp_label = get_node_or_null("VBoxContainer/UserInfoContainer/TimestampLabel")
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if not content_label:
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content_label = get_node_or_null("VBoxContainer/ContentLabel")
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if not user_info_container:
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user_info_container = get_node_or_null("VBoxContainer/UserInfoContainer")
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# 内容换行与自适应高度
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if content_label:
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content_label.size_flags_horizontal = Control.SIZE_EXPAND_FILL
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content_label.size_flags_vertical = Control.SIZE_SHRINK_BEGIN
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content_label.autowrap_mode = TextServer.AUTOWRAP_WORD_SMART
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content_label.fit_content = true
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content_label.scroll_active = false
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# ============================================================================
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# 成员变量
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# ============================================================================
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# 是否为自己发送的消息
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var _is_self: bool = false
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# ============================================================================
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# 公共 API
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# ============================================================================
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# 设置消息内容
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#
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# 参数:
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# from_user: String - 发送者用户名
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# content: String - 消息内容
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# timestamp: float - Unix 时间戳
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# is_self: bool - 是否为自己发送的消息（默认 false）
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#
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# 使用示例:
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# message.set_message("Alice", "Hello!", 1703500800.0, false)
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func set_message(from_user: String, content: String, timestamp: float, is_self: bool = false) -> void:
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_is_self = is_self
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_cache_node_refs()
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var safe_from_user := from_user
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if safe_from_user.strip_edges().is_empty():
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safe_from_user = "我" if is_self else "玩家"
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# 设置用户名（带空值检查）
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if username_label:
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username_label.text = safe_from_user
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else:
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push_error("ChatMessage: username_label is null!")
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return
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# 设置内容
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if content_label:
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content_label.clear() # 清除默认文本和所有内容
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content_label.append_text(content) # 作为纯文本追加，避免 BBCode 解析导致内容不显示
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else:
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push_error("ChatMessage: content_label is null!")
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return
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# 设置时间戳
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if timestamp_label:
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timestamp_label.text = _format_timestamp(timestamp)
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else:
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push_error("ChatMessage: timestamp_label is null!")
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return
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# 应用样式
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_apply_style()
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# ============================================================================
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# 内部方法 - 样式处理
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# ============================================================================
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# 应用样式（自己和他人的消息不同）
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func _apply_style() -> void:
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if not username_label or not timestamp_label or not user_info_container:
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return
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# 重要：设置垂直 size flags 让 Panel 适应内容高度
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size_flags_vertical = Control.SIZE_SHRINK_BEGIN
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if _is_self:
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# 自己的消息：右侧对齐，蓝色背景
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size_flags_horizontal = Control.SIZE_SHRINK_END
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user_info_container.alignment = BoxContainer.ALIGNMENT_END
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# 设置面板样式
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add_theme_stylebox_override("panel", _get_self_style())
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# 设置文字颜色 - ID使用金色 #FFD700
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username_label.add_theme_color_override("font_color", Color(1.0, 0.8431373, 0.0))
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timestamp_label.add_theme_color_override("font_color", Color(0.7, 0.7, 0.7))
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if content_label:
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content_label.add_theme_color_override("default_color", Color(0.95, 0.97, 1.0))
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else:
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# 他人的消息：左侧对齐，灰色背景
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size_flags_horizontal = Control.SIZE_SHRINK_BEGIN
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user_info_container.alignment = BoxContainer.ALIGNMENT_BEGIN
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# 设置面板样式
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add_theme_stylebox_override("panel", _get_other_style())
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# 设置文字颜色 - ID使用蓝色 #69c0ff
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username_label.add_theme_color_override("font_color", Color(0.4117647, 0.7529412, 1.0))
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timestamp_label.add_theme_color_override("font_color", Color(0.5, 0.5, 0.5))
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if content_label:
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content_label.add_theme_color_override("default_color", Color(0.15, 0.15, 0.15))
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# 获取自己消息的样式
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func _get_self_style() -> StyleBoxFlat:
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var style := StyleBoxFlat.new()
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style.bg_color = Color(0.2, 0.6, 1.0, 0.8)
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style.corner_radius_top_left = 10
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style.corner_radius_top_right = 10
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style.corner_radius_bottom_left = 10
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style.corner_radius_bottom_right = 2
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style.content_margin_left = 10
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style.content_margin_right = 10
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style.content_margin_top = 8
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style.content_margin_bottom = 8
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return style
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# 获取他人消息的样式
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func _get_other_style() -> StyleBoxFlat:
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var style := StyleBoxFlat.new()
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style.bg_color = Color(0.9, 0.9, 0.9, 0.8)
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style.corner_radius_top_left = 10
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style.corner_radius_top_right = 10
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style.corner_radius_bottom_left = 2
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style.corner_radius_bottom_right = 10
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style.content_margin_left = 10
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style.content_margin_right = 10
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style.content_margin_top = 8
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style.content_margin_bottom = 8
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return style
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# ============================================================================
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# 内部方法 - 工具函数
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# ============================================================================
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# 格式化时间戳
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#
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# 参数:
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# timestamp: float - Unix 时间戳
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#
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# 返回值:
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# String - 格式化的时间字符串
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func _format_timestamp(timestamp: float) -> String:
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if timestamp == 0:
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return ""
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var datetime := Time.get_datetime_dict_from_unix_time(timestamp)
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# 格式化为 HH:MM
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return "%02d:%02d" % [datetime.hour, datetime.minute]
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# 获取所有子节点名称（调试用）
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func _get_all_children_names(node: Node, _indent: int = 0) -> String:
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var result := ""
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for child in node.get_children():
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result += " ".repeat(_indent) + child.name + "\n"
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result += _get_all_children_names(child, _indent + 1)
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return result
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