370 lines
14 KiB
GDScript
370 lines
14 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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const MIN_BUBBLE_TEXT_WIDTH: float = 86.0
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const BUBBLE_HORIZONTAL_MARGIN: float = 28.0
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const HEADER_GAP_WIDTH: float = 8.0
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const AVATAR_SIZE: float = 40.0
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const AVATAR_CORNER_RADIUS: int = 12
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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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# 头像节点
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var left_avatar_panel: PanelContainer
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var right_avatar_panel: PanelContainer
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var left_avatar_label: Label
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var right_avatar_label: Label
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var message_row: HBoxContainer
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var bubble_panel: PanelContainer
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var text_container: VBoxContainer
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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("MessageRow/BubblePanel/TextContainer/HeaderRow/UsernameLabel")
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if not timestamp_label:
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timestamp_label = get_node_or_null("MessageRow/BubblePanel/TextContainer/HeaderRow/TimestampLabel")
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if not content_label:
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content_label = get_node_or_null("MessageRow/BubblePanel/TextContainer/ContentLabel")
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if not user_info_container:
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user_info_container = get_node_or_null("MessageRow/BubblePanel/TextContainer/HeaderRow")
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if not left_avatar_panel:
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left_avatar_panel = get_node_or_null("MessageRow/LeftAvatarPanel")
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if not right_avatar_panel:
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right_avatar_panel = get_node_or_null("MessageRow/RightAvatarPanel")
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if not left_avatar_label:
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left_avatar_label = get_node_or_null("MessageRow/LeftAvatarPanel/AvatarLabel")
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if not right_avatar_label:
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right_avatar_label = get_node_or_null("MessageRow/RightAvatarPanel/AvatarLabel")
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if not message_row:
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message_row = get_node_or_null("MessageRow")
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if not bubble_panel:
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bubble_panel = get_node_or_null("MessageRow/BubblePanel")
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if not text_container:
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text_container = get_node_or_null("MessageRow/BubblePanel/TextContainer")
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_configure_avatar(left_avatar_panel, left_avatar_label)
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_configure_avatar(right_avatar_panel, right_avatar_label)
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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_SHRINK_BEGIN
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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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var avatar_text := _get_avatar_text(safe_from_user, is_self)
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if left_avatar_label:
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left_avatar_label.text = avatar_text
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if right_avatar_label:
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right_avatar_label.text = avatar_text
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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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_update_bubble_width(safe_from_user, content)
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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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size_flags_horizontal = Control.SIZE_EXPAND_FILL
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if _is_self:
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if message_row:
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message_row.alignment = BoxContainer.ALIGNMENT_END
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user_info_container.alignment = BoxContainer.ALIGNMENT_END
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_set_avatar_side(true)
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# 设置面板样式
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if bubble_panel:
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bubble_panel.add_theme_stylebox_override("panel", _get_self_style())
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if right_avatar_panel:
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right_avatar_panel.add_theme_stylebox_override("panel", _get_avatar_style(true))
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_apply_selected_avatar(right_avatar_panel, right_avatar_label, username_label.text)
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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(0.258824, 0.627451, 0.913725))
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timestamp_label.add_theme_color_override("font_color", Color(0.560784, 0.639216, 0.733333))
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if right_avatar_label:
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right_avatar_label.add_theme_color_override("font_color", Color(1, 1, 1))
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if content_label:
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content_label.add_theme_color_override("default_color", Color(0.188, 0.294, 0.424))
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else:
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if message_row:
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message_row.alignment = BoxContainer.ALIGNMENT_BEGIN
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user_info_container.alignment = BoxContainer.ALIGNMENT_BEGIN
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_set_avatar_side(false)
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# 设置面板样式
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if bubble_panel:
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bubble_panel.add_theme_stylebox_override("panel", _get_other_style())
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if left_avatar_panel:
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left_avatar_panel.add_theme_stylebox_override("panel", _get_avatar_style(false))
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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(0.207843, 0.427451, 0.686275))
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timestamp_label.add_theme_color_override("font_color", Color(0.560784, 0.639216, 0.733333))
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if left_avatar_label:
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left_avatar_label.add_theme_color_override("font_color", Color(1, 1, 1))
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if content_label:
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content_label.add_theme_color_override("default_color", Color(0.27451, 0.407843, 0.541176))
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func _set_avatar_side(is_self: bool) -> void:
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if left_avatar_panel:
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left_avatar_panel.visible = not is_self
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if right_avatar_panel:
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right_avatar_panel.visible = is_self
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func _configure_avatar(panel: PanelContainer, label: Label) -> void:
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if panel:
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panel.custom_minimum_size = Vector2(AVATAR_SIZE, AVATAR_SIZE)
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panel.size = Vector2(AVATAR_SIZE, AVATAR_SIZE)
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panel.size_flags_horizontal = Control.SIZE_SHRINK_BEGIN
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panel.size_flags_vertical = Control.SIZE_SHRINK_BEGIN
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panel.clip_contents = true
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if label:
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label.custom_minimum_size = Vector2(AVATAR_SIZE, AVATAR_SIZE)
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label.size_flags_horizontal = Control.SIZE_SHRINK_BEGIN
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label.size_flags_vertical = Control.SIZE_SHRINK_BEGIN
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label.horizontal_alignment = HORIZONTAL_ALIGNMENT_CENTER
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label.vertical_alignment = VERTICAL_ALIGNMENT_CENTER
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func _update_bubble_width(from_user: String, content: String) -> void:
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var maxTextWidth := float(max_width) - BUBBLE_HORIZONTAL_MARGIN
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var contentWidth := _measure_label_text_width(content_label, content, 14.0)
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var headerWidth := _measure_label_text_width(username_label, from_user, 16.0) + _measure_label_text_width(timestamp_label, timestamp_label.text, 13.0) + HEADER_GAP_WIDTH
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var textWidth: float = clamp(max(contentWidth, headerWidth, MIN_BUBBLE_TEXT_WIDTH), MIN_BUBBLE_TEXT_WIDTH, maxTextWidth)
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if username_label:
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username_label.custom_minimum_size.x = min(_measure_label_text_width(username_label, from_user, 16.0), textWidth)
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if timestamp_label:
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timestamp_label.custom_minimum_size.x = _measure_label_text_width(timestamp_label, timestamp_label.text, 13.0)
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if content_label:
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content_label.custom_minimum_size.x = textWidth
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if bubble_panel:
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bubble_panel.custom_minimum_size.x = textWidth + BUBBLE_HORIZONTAL_MARGIN
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func _measure_label_text_width(label: Control, text: String, fallback_width: float) -> float:
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if label != null:
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var font := label.get_theme_font("font")
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if font != null:
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var fontSize := label.get_theme_font_size("font_size")
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if fontSize <= 0:
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fontSize = int(fallback_width)
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var measured := font.get_string_size(text, HORIZONTAL_ALIGNMENT_LEFT, -1.0, fontSize).x
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if measured > 0.0:
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return measured + 2.0
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var width := 0.0
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for index in range(text.length()):
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var code := text.unicode_at(index)
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if code <= 0x7f:
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width += fallback_width * 0.58
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else:
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width += fallback_width
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return width + 2.0
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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(0.878431, 0.94902, 1.0, 0.96)
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style.border_width_left = 1
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style.border_width_top = 1
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style.border_width_right = 1
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style.border_width_bottom = 1
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style.border_color = Color(0.64, 0.82, 0.95, 0.78)
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style.corner_radius_top_left = 14
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style.corner_radius_top_right = 8
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style.corner_radius_bottom_left = 14
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style.corner_radius_bottom_right = 14
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style.content_margin_left = 14
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style.content_margin_right = 14
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style.content_margin_top = 9
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style.content_margin_bottom = 9
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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(1, 1, 1, 0.96)
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style.border_width_left = 1
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style.border_width_top = 1
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style.border_width_right = 1
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style.border_width_bottom = 1
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style.border_color = Color(0.78, 0.85, 0.92, 0.72)
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style.corner_radius_top_left = 8
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style.corner_radius_top_right = 14
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style.corner_radius_bottom_left = 14
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style.corner_radius_bottom_right = 14
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style.content_margin_left = 14
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style.content_margin_right = 14
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style.content_margin_top = 9
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style.content_margin_bottom = 9
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return style
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func _get_avatar_style(is_self: bool) -> StyleBoxFlat:
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if is_self:
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var appearanceManager := get_node_or_null("/root/AppearanceManager")
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if appearanceManager != null and appearanceManager.has_method("create_avatar_style") and appearanceManager.has_method("get_selected_avatar"):
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var avatar: Variant = appearanceManager.call("get_selected_avatar")
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if avatar is Dictionary:
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return appearanceManager.call("create_avatar_style", avatar as Dictionary, AVATAR_CORNER_RADIUS)
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var style := StyleBoxFlat.new()
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style.bg_color = Color(0.361, 0.690, 0.914) if is_self else Color(0.62, 0.75, 0.86)
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style.corner_radius_top_left = AVATAR_CORNER_RADIUS
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style.corner_radius_top_right = AVATAR_CORNER_RADIUS
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style.corner_radius_bottom_left = AVATAR_CORNER_RADIUS
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style.corner_radius_bottom_right = AVATAR_CORNER_RADIUS
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style.border_width_left = 1
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style.border_width_top = 1
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style.border_width_right = 1
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style.border_width_bottom = 1
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style.border_color = Color(1, 1, 1, 0.82)
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return style
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func _get_avatar_text(from_user: String, is_self: bool) -> String:
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if is_self:
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var appearanceManager := get_node_or_null("/root/AppearanceManager")
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if appearanceManager != null and appearanceManager.has_method("has_custom_avatar") and bool(appearanceManager.call("has_custom_avatar")):
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return ""
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if appearanceManager != null and appearanceManager.has_method("get_avatar_label"):
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return str(appearanceManager.call("get_avatar_label"))
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return "我"
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var trimmed := from_user.strip_edges()
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if trimmed.is_empty():
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return "鲸"
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return trimmed.substr(0, 1)
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func _apply_selected_avatar(panel: PanelContainer, label: Label, fallbackText: String) -> void:
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var appearanceManager := get_node_or_null("/root/AppearanceManager")
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if appearanceManager != null and appearanceManager.has_method("apply_avatar_to_panel"):
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appearanceManager.call("apply_avatar_to_panel", panel, label, "", fallbackText)
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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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