merman-render 0.5.0

Headless layout + SVG renderer for Mermaid (parity-focused; upstream SVG goldens).
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90

//! Flowchart v2 hexagon shape.

use std::fmt::Write as _;

use crate::svg::parity::flowchart::{OptionalStyleAttr, escape_attr};
use crate::svg::parity::fmt_display;

use super::super::geom::path_from_points;
use super::super::roughjs::roughjs_paths_for_svg_path;

pub(in crate::svg::parity::flowchart::render::node) fn render_hexagon(
    out: &mut String,
    common: &super::super::FlowchartNodeRenderCommon<'_>,
    details: &mut crate::svg::parity::flowchart::types::FlowchartRenderDetails,
) {
    let w = common.layout_node.width.max(1.0);
    let h = common.layout_node.height.max(1.0);
    let half_width = w / 2.0;
    let half_height = h / 2.0;
    let fixed_length = half_height / 2.0;
    let deduced_width = half_width - fixed_length;

    let pts: Vec<(f64, f64)> = vec![
        (-deduced_width, -half_height),
        (0.0, -half_height),
        (deduced_width, -half_height),
        (half_width, 0.0),
        (deduced_width, half_height),
        (0.0, half_height),
        (-deduced_width, half_height),
        (-half_width, 0.0),
    ];
    let path_data = path_from_points(&pts);

    if let Some((fill_d, stroke_d)) =
        super::super::helpers::timed_node_roughjs(common.timing_enabled, details, || {
            roughjs_paths_for_svg_path(
                &path_data,
                common.fill_color,
                common.stroke_color,
                common.stroke_width,
                common.stroke_dasharray,
                common.hand_drawn_seed,
            )
        })
    {
        out.push_str(r#"<g class="basic label-container">"#);
        let _ = write!(
            out,
            r#"<path d="{}" stroke="none" stroke-width="0" fill="{}" style="{}"/>"#,
            escape_attr(&fill_d),
            escape_attr(common.fill_color),
            escape_attr(common.style)
        );
        let _ = write!(
            out,
            r#"<path d="{}" stroke="{}" stroke-width="{}" fill="none" stroke-dasharray="{}" style="{}"/>"#,
            escape_attr(&stroke_d),
            escape_attr(common.stroke_color),
            fmt_display(common.stroke_width as f64),
            escape_attr(common.stroke_dasharray),
            escape_attr(common.style)
        );
        out.push_str("</g>");
    } else {
        let _ = write!(
            out,
            r#"<polygon points="{},{} {},{} {},{} {},{} {},{} {},{} {},{} {},{}" class="label-container" transform="translate({},{})"{} />"#,
            fmt_display(-deduced_width),
            fmt_display(-half_height),
            fmt_display(0.0),
            fmt_display(-half_height),
            fmt_display(deduced_width),
            fmt_display(-half_height),
            fmt_display(half_width),
            fmt_display(0.0),
            fmt_display(deduced_width),
            fmt_display(half_height),
            fmt_display(0.0),
            fmt_display(half_height),
            fmt_display(-deduced_width),
            fmt_display(half_height),
            fmt_display(-half_width),
            fmt_display(0.0),
            fmt_display(0.0),
            fmt_display(0.0),
            OptionalStyleAttr(common.style)
        );
    }
}