easyofd_core/graph/tight/method/
move_cmd.rs

1//! 移动路径方法。
2//!
3//! 对应 Java: org.ofdrw.core.graph.tight.method.Move
4
5use crate::xml_element::{XmlElement, XmlElementError, XmlNode};
6
7/// 移动路径方法。
8///
9/// 用于表示到新的绘制点指令。
10///
11/// 对应 Java: org.ofdrw.core.graph.tight.method.Move
12#[derive(Debug, Clone, PartialEq)]
13pub struct Move {
14    /// 移动后新的当前绘制点 (x, y)。
15    pub point: (f64, f64),
16}
17
18impl Move {
19    /// 创建移动命令。
20    #[must_use]
21    pub fn new(x: f64, y: f64) -> Self {
22        Self { point: (x, y) }
23    }
24
25    /// 序列化为缩写数据字符串（M 命令格式）。
26    #[must_use]
27    pub fn to_abbreviated_string(&self) -> String {
28        format!("M {} {}", self.point.0, self.point.1)
29    }
30}
31
32impl std::fmt::Display for Move {
33    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
34        f.write_str(&self.to_abbreviated_string())
35    }
36}
37
38impl XmlElement for Move {
39    /// 对应 Java: Move 元素名 "Move"。
40    fn element_name(&self) -> &'static str {
41        "Move"
42    }
43
44    fn attributes(&self) -> Vec<(String, String)> {
45        Vec::new()
46    }
47
48    /// 覆写 write_xml：文本内容为 M 命令格式。
49    fn write_xml(&self, out: &mut String) {
50        out.push_str("<Move>");
51        out.push_str(&crate::xml_element::xml_escape(
52            &self.to_abbreviated_string(),
53        ));
54        out.push_str("</Move>");
55    }
56
57    fn from_xml(node: &XmlNode) -> Result<Self, XmlElementError> {
58        let text = node
59            .text
60            .as_deref()
61            .ok_or_else(|| XmlElementError("Move 缺少文本内容".to_string()))?;
62        let parts: Vec<&str> = text.split_whitespace().collect();
63        if parts.len() < 3 || parts[0] != "M" {
64            return Err(XmlElementError(format!("Move 格式错误: {text}")));
65        }
66        let x: f64 = parts[1]
67            .parse()
68            .map_err(|e| XmlElementError(format!("解析 Move.x 失败: {e}")))?;
69        let y: f64 = parts[2]
70            .parse()
71            .map_err(|e| XmlElementError(format!("解析 Move.y 失败: {e}")))?;
72        Ok(Self::new(x, y))
73    }
74}
75
76#[cfg(test)]
77mod tests {
78    use super::*;
79    use crate::xml_parse::parse_xml_to_nodes;
80
81    #[test]
82    fn move_new() {
83        let m = Move::new(10.0, 20.0);
84        assert_eq!(m.point, (10.0, 20.0));
85    }
86
87    #[test]
88    fn move_to_string() {
89        let m = Move::new(0.0, 0.0);
90        assert_eq!(m.to_abbreviated_string(), "M 0 0");
91    }
92
93    #[test]
94    fn move_display() {
95        let m = Move::new(5.5, 3.3);
96        let s = format!("{m}");
97        assert!(s.contains("M 5.5 3.3"));
98    }
99
100    #[test]
101    fn move_clone_eq() {
102        let m = Move::new(1.0, 2.0);
103        let m2 = m.clone();
104        assert_eq!(m, m2);
105    }
106
107    #[test]
108    fn test_xml_element_name() {
109        let m = Move::new(1.0, 2.0);
110        assert_eq!(m.element_name(), "Move");
111    }
112
113    #[test]
114    fn test_xml_element_roundtrip() {
115        let m = Move::new(10.5, 20.5);
116        let xml = m.to_xml();
117        assert!(xml.contains("<Move>"));
118        assert!(xml.contains("M 10.5 20.5"));
119        let node = parse_xml_to_nodes(&xml).unwrap();
120        let m2 = Move::from_xml(&node).unwrap();
121        assert!((m.point.0 - m2.point.0).abs() < f64::EPSILON);
122        assert!((m.point.1 - m2.point.1).abs() < f64::EPSILON);
123    }
124}
easyofd_core/graph/tight/method/move_cmd.rs

easyofd_core/graph/tight/method/
move_cmd.rs
