ass_core/parser/ast/style/
definition.rs

1//! `Style` struct definition for ASS style nodes.
2//!
3//! Defines the zero-copy `Style` struct representing a single style from the
4//! V4+ Styles section, together with its `Default` implementation providing
5//! standard ASS style values.
6
7use super::super::Span;
8
9/// Style definition from [V4+ Styles] section
10///
11/// Represents a single style definition that can be referenced by events.
12/// All fields are stored as zero-copy string references to the original
13/// source text for maximum memory efficiency.
14///
15/// # Examples
16///
17/// ```rust
18/// use ass_core::parser::ast::Style;
19///
20/// let style = Style {
21///     name: "Default",
22///     fontname: "Arial",
23///     fontsize: "20",
24///     ..Style::default()
25/// };
26///
27/// assert_eq!(style.name, "Default");
28/// assert_eq!(style.fontname, "Arial");
29/// ```
30#[derive(Debug, Clone, PartialEq, Eq)]
31#[cfg_attr(feature = "serde", derive(serde::Serialize))]
32pub struct Style<'a> {
33    /// Style name (must be unique within script)
34    pub name: &'a str,
35
36    /// Parent style name for inheritance (None if no inheritance)
37    pub parent: Option<&'a str>,
38
39    /// Font name for text rendering
40    pub fontname: &'a str,
41
42    /// Font size in points
43    pub fontsize: &'a str,
44
45    /// Primary color in BGR format (&HBBGGRR)
46    pub primary_colour: &'a str,
47
48    /// Secondary color for collision effects
49    pub secondary_colour: &'a str,
50
51    /// Outline color
52    pub outline_colour: &'a str,
53
54    /// Shadow/background color
55    pub back_colour: &'a str,
56
57    /// Bold flag (-1/0 or weight)
58    pub bold: &'a str,
59
60    /// Italic flag (0/1)
61    pub italic: &'a str,
62
63    /// Underline flag (0/1)
64    pub underline: &'a str,
65
66    /// Strikeout flag (0/1)
67    pub strikeout: &'a str,
68
69    /// Horizontal scale percentage
70    pub scale_x: &'a str,
71
72    /// Vertical scale percentage
73    pub scale_y: &'a str,
74
75    /// Character spacing in pixels
76    pub spacing: &'a str,
77
78    /// Rotation angle in degrees
79    pub angle: &'a str,
80
81    /// Border style (1=outline+shadow, 3=opaque box)
82    pub border_style: &'a str,
83
84    /// Outline width in pixels
85    pub outline: &'a str,
86
87    /// Shadow depth in pixels
88    pub shadow: &'a str,
89
90    /// Alignment (1-3 + 4/8 for vertical positioning)
91    pub alignment: &'a str,
92
93    /// Left margin in pixels
94    pub margin_l: &'a str,
95
96    /// Right margin in pixels
97    pub margin_r: &'a str,
98
99    /// Vertical margin in pixels (V4+)
100    pub margin_v: &'a str,
101
102    /// Top margin in pixels (V4++)
103    pub margin_t: Option<&'a str>,
104
105    /// Bottom margin in pixels (V4++)
106    pub margin_b: Option<&'a str>,
107
108    /// Font encoding identifier
109    pub encoding: &'a str,
110
111    /// Positioning context (V4++)
112    pub relative_to: Option<&'a str>,
113
114    /// Span in source text where this style is defined
115    pub span: Span,
116}
117
118impl Default for Style<'_> {
119    /// Create default ASS style with standard values
120    ///
121    /// Provides the standard ASS default style values as defined
122    /// in the ASS specification for maximum compatibility.
123    fn default() -> Self {
124        Self {
125            name: "Default",
126            parent: None,
127            fontname: "Arial",
128            fontsize: "20",
129            primary_colour: "&Hffffff",
130            secondary_colour: "&H0000ff",
131            outline_colour: "&H000000",
132            back_colour: "&H000000",
133            bold: "0",
134            italic: "0",
135            underline: "0",
136            strikeout: "0",
137            scale_x: "100",
138            scale_y: "100",
139            spacing: "0",
140            angle: "0",
141            border_style: "1",
142            outline: "0",
143            shadow: "0",
144            alignment: "2",
145            margin_l: "10",
146            margin_r: "10",
147            margin_v: "10",
148            margin_t: None,
149            margin_b: None,
150            encoding: "1",
151            relative_to: None,
152            span: Span::new(0, 0, 0, 0),
153        }
154    }
155}
ass_core/parser/ast/style/definition.rs

ass_core/parser/ast/style/
definition.rs
