egui-theme 0.2.0

A standalone serializable theme container for use with Egui.
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
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171

use egui::Style;
use std::collections::HashMap;

const TEXT_STYLES_KEY: &str = "text_styles";

// TODO: Change the println! to a proper logging crate.
macro_rules! ser {
    ($collection:ident, $style:ident, $prop:ident) => {
        match serde_json::to_value($style.$prop.to_owned()) {
            Ok(value) => {
                let _ = $collection.insert(stringify!($prop).to_owned(), value);
            }
            Err(error) => {
                println!("{}", error);
            }
        }
    };
    ($collection:ident, $style:ident, $prop:ident, $sub_prop:ident) => {
        match serde_json::to_value($style.$prop.$sub_prop.to_owned()) {
            Ok(value) => {
                let _ = $collection.insert(stringify!($prop.$sub_prop).to_owned(), value);
            }
            Err(error) => {
                println!("{}", error);
            }
        }
    };
}

macro_rules! de {
    ($collection:ident, $style:ident, $prop:ident) => {
        $collection.get(&stringify!($prop).to_owned()).map(|value| {
            if let Ok(deserialized_value) = serde_json::from_value(value.to_owned()) {
                $style.$prop = deserialized_value;
            }
        });
    };
    ($collection:ident, $style:ident, $prop:ident, $sub_prop:ident) => {
        $collection
            .get(&stringify!($prop.$sub_prop).to_owned())
            .map(|value| {
                if let Ok(deserialized_value) = serde_json::from_value(value.to_owned()) {
                    $style.$prop.$sub_prop = deserialized_value;
                }
            });
    };
}

/// Helper function to serialize the `egui::Style`
pub fn from_style(style: Style) -> HashMap<String, super::ThemeValue> {
    let mut hash_map = HashMap::new();

    {
        let text_styles = style
            .text_styles
            .iter()
            .map(|(k, v)| (k.to_owned(), v.to_owned()))
            .collect::<Vec<_>>();
        if let Ok(value) = serde_json::to_value(text_styles) {
            hash_map.insert(TEXT_STYLES_KEY.to_owned(), value);
        }
    }
    // Text Styles are a special case due to being a map that must serialize to a string.
    // ser!(hash_map, style, text_styles);

    ser!(hash_map, style, override_text_style);
    ser!(hash_map, style, override_font_id);
    ser!(hash_map, style, wrap);

    ser!(hash_map, style, animation_time);
    ser!(hash_map, style, explanation_tooltips);

    ser!(hash_map, style, spacing, item_spacing);
    ser!(hash_map, style, spacing, window_margin);
    ser!(hash_map, style, spacing, button_padding);
    ser!(hash_map, style, spacing, indent);
    ser!(hash_map, style, spacing, interact_size);
    ser!(hash_map, style, spacing, slider_width);
    ser!(hash_map, style, spacing, text_edit_width);
    ser!(hash_map, style, spacing, icon_width);
    ser!(hash_map, style, spacing, icon_spacing);
    ser!(hash_map, style, spacing, tooltip_width);
    ser!(hash_map, style, spacing, indent_ends_with_horizontal_line);
    ser!(hash_map, style, spacing, combo_height);
    ser!(hash_map, style, spacing, scroll_bar_width);

    ser!(hash_map, style, interaction, resize_grab_radius_side);
    ser!(hash_map, style, interaction, resize_grab_radius_corner);
    ser!(hash_map, style, interaction, show_tooltips_only_when_still);
    ser!(hash_map, style, visuals, dark_mode);
    ser!(hash_map, style, visuals, override_text_color);
    ser!(hash_map, style, visuals, widgets);
    ser!(hash_map, style, visuals, selection);
    ser!(hash_map, style, visuals, hyperlink_color);
    ser!(hash_map, style, visuals, faint_bg_color);
    ser!(hash_map, style, visuals, extreme_bg_color);
    ser!(hash_map, style, visuals, code_bg_color);
    ser!(hash_map, style, visuals, window_rounding);
    ser!(hash_map, style, visuals, window_shadow);
    ser!(hash_map, style, visuals, popup_shadow);
    ser!(hash_map, style, visuals, resize_corner_size);
    ser!(hash_map, style, visuals, text_cursor_width);
    ser!(hash_map, style, visuals, text_cursor_preview);
    ser!(hash_map, style, visuals, clip_rect_margin);
    ser!(hash_map, style, visuals, button_frame);
    ser!(hash_map, style, visuals, collapsing_header_frame);

    hash_map
}

/// Helper function to deserialize the `egui::Style`
pub fn to_style(hash_map: HashMap<String, super::ThemeValue>) -> Style {
    let mut style = Style::default();
    // Special case due to json requiring String keys
    {
        if let Some(value) = hash_map.get(TEXT_STYLES_KEY) {
            if let Ok(values) =
                serde_json::from_value::<Vec<(egui::TextStyle, egui::FontId)>>(value.to_owned())
            {
                for (key, value) in values {
                    style.text_styles.insert(key, value);
                }
            }
        }
    }

    de!(hash_map, style, override_text_style);
    de!(hash_map, style, override_font_id);
    de!(hash_map, style, wrap);

    de!(hash_map, style, animation_time);
    de!(hash_map, style, explanation_tooltips);

    de!(hash_map, style, spacing, item_spacing);
    de!(hash_map, style, spacing, window_margin);
    de!(hash_map, style, spacing, button_padding);
    de!(hash_map, style, spacing, indent);
    de!(hash_map, style, spacing, interact_size);
    de!(hash_map, style, spacing, slider_width);
    de!(hash_map, style, spacing, text_edit_width);
    de!(hash_map, style, spacing, icon_width);
    de!(hash_map, style, spacing, icon_spacing);
    de!(hash_map, style, spacing, tooltip_width);
    de!(hash_map, style, spacing, indent_ends_with_horizontal_line);
    de!(hash_map, style, spacing, combo_height);
    de!(hash_map, style, spacing, scroll_bar_width);

    de!(hash_map, style, interaction, resize_grab_radius_side);
    de!(hash_map, style, interaction, resize_grab_radius_corner);
    de!(hash_map, style, interaction, show_tooltips_only_when_still);

    de!(hash_map, style, visuals, dark_mode);
    de!(hash_map, style, visuals, override_text_color);
    de!(hash_map, style, visuals, widgets);
    de!(hash_map, style, visuals, selection);
    de!(hash_map, style, visuals, hyperlink_color);
    de!(hash_map, style, visuals, faint_bg_color);
    de!(hash_map, style, visuals, extreme_bg_color);
    de!(hash_map, style, visuals, code_bg_color);
    de!(hash_map, style, visuals, window_rounding);
    de!(hash_map, style, visuals, window_shadow);
    de!(hash_map, style, visuals, popup_shadow);
    de!(hash_map, style, visuals, resize_corner_size);
    de!(hash_map, style, visuals, text_cursor_width);
    de!(hash_map, style, visuals, text_cursor_preview);
    de!(hash_map, style, visuals, clip_rect_margin);
    de!(hash_map, style, visuals, button_frame);
    de!(hash_map, style, visuals, collapsing_header_frame);

    style
}