egui_styled 0.2.1

Tailwind-style utility styling for egui: per-widget hover/focus/active variants, design tokens, and composable style functions.
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::{Align, FontId, Id, Response, Shape, TextEdit, Ui};

use crate::{
    impl_style_builders,
    state::PseudoState,
    style::shared_style::{SharedStyle, paint_shadows},
};

pub struct StyledTextEdit<'a> {
    text: &'a mut String,
    hint: Option<String>,
    multiline: bool,
    password: bool,
    char_limit: Option<usize>,
    font: Option<FontId>,
    desired_width: Option<f32>,
    horizontal_align: Option<Align>,
    id_override: Option<Id>,
    style: SharedStyle,
}

impl<'a> StyledTextEdit<'a> {
    pub fn new(text: &'a mut String) -> Self {
        Self {
            text,
            hint: None,
            multiline: false,
            password: false,
            char_limit: None,
            font: None,
            desired_width: None,
            horizontal_align: None,
            id_override: None,
            style: SharedStyle::default(),
        }
    }

    /// Override the auto-generated widget id. Pins pseudo-state across
    /// conditional rendering - see [`crate::StyledButton::id`] for the rationale.
    pub fn id(mut self, id: impl std::hash::Hash) -> Self {
        self.id_override = Some(Id::new(id));
        self
    }

    pub fn hint(mut self, h: impl Into<String>) -> Self {
        self.hint = Some(h.into());
        self
    }

    pub fn password(mut self) -> Self {
        self.password = true;
        self
    }

    pub fn multiline(mut self) -> Self {
        self.multiline = true;
        self
    }

    pub fn char_limit(mut self, limit: usize) -> Self {
        self.char_limit = Some(limit);
        self
    }

    pub fn font(mut self, font: FontId) -> Self {
        self.font = Some(font);
        self
    }

    pub fn desired_width(mut self, width: f32) -> Self {
        self.desired_width = Some(width);
        self
    }

    pub fn horizontal_align(mut self, align: Align) -> Self {
        self.horizontal_align = Some(align);
        self
    }

    pub fn show(self, ui: &mut Ui) -> Response {
        if self.style.visible == Some(false) {
            ui.set_invisible();
        }

        let id = self
            .id_override
            .unwrap_or_else(|| ui.make_persistent_id(ui.next_auto_id()));
        let pseudo = PseudoState::load(ui, id);

        let per = self.style.resolve_per_state(ui.visuals());
        let shadow_idx = ui.painter().add(Shape::Noop);

        let response = ui
            .scope(|ui| {
                SharedStyle::apply_to_visuals(&per, ui.visuals_mut());

                let mut text_edit = if self.multiline {
                    TextEdit::multiline(self.text)
                } else {
                    TextEdit::singleline(self.text)
                };
                if let Some(h) = &self.hint {
                    text_edit = text_edit.hint_text(h.as_str());
                }
                if self.password {
                    text_edit = text_edit.password(true);
                }
                if let Some(limit) = self.char_limit {
                    text_edit = text_edit.char_limit(limit);
                }
                if let Some(font) = self.font.clone() {
                    text_edit = text_edit.font(font);
                } else if let Some(size) = self.style.font_size {
                    text_edit = text_edit.font(egui::FontId::proportional(size));
                }
                if let Some(align) = self.horizontal_align {
                    text_edit = text_edit.horizontal_align(align);
                }
                if let Some(width) = self.desired_width {
                    text_edit = text_edit.desired_width(width);
                } else if self.style.full_width {
                    text_edit = text_edit.desired_width(ui.available_width());
                }

                // Pass a fully-built custom Frame so egui skips its own visuals
                // path (which re-derives stroke from selection/widget visuals and
                // expands the inner margin by `expansion - stroke.width`).
                let resolved = if pseudo.focused {
                    &per.focused
                } else if pseudo.hovered {
                    &per.hovered
                } else {
                    &per.inactive
                };
                let padding = per.padding;
                let custom_frame = egui::Frame::new()
                    .fill(resolved.bg)
                    .stroke(resolved.border)
                    .corner_radius(per.corner_radius)
                    .inner_margin(padding);
                text_edit = text_edit.frame(custom_frame).margin(padding);

                let mut wrapper = egui::Frame::new();
                if per.margin != egui::Margin::ZERO {
                    wrapper = wrapper.outer_margin(per.margin);
                }
                wrapper.show(ui, |ui| ui.add(text_edit)).inner
            })
            .inner;

        paint_shadows(
            ui,
            shadow_idx,
            response.rect,
            per.corner_radius,
            &self.style.shadows,
        );

        PseudoState::from_response(&response).store(ui, id);

        if let Some(icon) = per.cursor_icon
            && response.hovered()
        {
            ui.ctx().set_cursor_icon(icon);
        }

        response
    }
}

impl_style_builders!(StyledTextEdit<'_>);