mtk-rs 0.1.0-beta.2

Muse Toolkit
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

use std::marker::PhantomData;

use crate::colors::Color;
use crate::debugger::SourceLocation;
use crate::style::{Size, Style};
use crate::ui::event::EventResult;
use crate::ui::{Event, View};
use crate::{Context, Node, rgb};

/// A visual separator line.
pub struct Divider<Msg> {
    pub(crate) is_vertical: bool,
    pub(crate) thickness: f32,
    pub(crate) color: Color,
    pub(crate) source_loc: Option<SourceLocation>,
    _marker: PhantomData<Msg>,
}

/// Creates a horizontal 1px divider.
#[track_caller]
pub fn divider<Msg>() -> Divider<Msg> {
    Divider {
        is_vertical: false,
        thickness: 1.0,
        color: rgb!(226, 232, 240),
        source_loc: Some(SourceLocation::here("Divider")),
        _marker: PhantomData,
    }
}

/// Creates a vertical 1px divider.
#[track_caller]
pub fn v_divider<Msg>() -> Divider<Msg> {
    Divider {
        is_vertical: true,
        thickness: 1.0,
        color: rgb!(226, 232, 240),
        source_loc: Some(SourceLocation::here("Divider")),
        _marker: PhantomData,
    }
}

impl<Msg> Divider<Msg> {
    /// Sets custom thickness.
    pub fn thickness(mut self, thickness: f32) -> Self {
        self.thickness = thickness;
        self
    }

    /// Sets custom divider color.
    pub fn color(mut self, color: Color) -> Self {
        self.color = color;
        self
    }
}

pub struct DividerElement {
    node: Node,
}

impl<State, Msg> View<State> for Divider<Msg> {
    type Element = DividerElement;
    type Message = Msg;

    fn build(&self, ctx: &mut Context) -> Self::Element {
        let node = ctx.create_node();
        if let Some(loc) = self.source_loc {
            ctx.set_node_source(node, loc);
        }

        let mut style = Style::new().bg_color(self.color);
        if self.is_vertical {
            style = style
                .width(Size::Fixed(self.thickness as u32))
                .height(Size::Percent(1.0));
        } else {
            style = style
                .width(Size::Percent(1.0))
                .height(Size::Fixed(self.thickness as u32));
        }
        style.apply_to_node(ctx, node);

        DividerElement { node }
    }

    fn rebuild(&self, prev: &Self, ctx: &mut Context, element: &mut Self::Element) {
        if self.color != prev.color {
            element.node.update_effects(ctx, |e| {
                e.background_color = self.color;
            });
        }
    }

    fn teardown(&self, ctx: &mut Context, element: &mut Self::Element) {
        element.node.remove(ctx);
        ctx.destroy_node(element.node);
    }

    fn get_node(&self, element: &Self::Element) -> Node {
        element.node
    }

    fn handle_event(
        &self,
        _element: &mut Self::Element,
        _state: &State,
        _event: Event,
        _ctx: &mut Context,
    ) -> (EventResult, Option<Self::Message>) {
        (EventResult::Ignored, None)
    }
}

/// A flexible layout spacer that expands to fill available space (`flex_grow: 1.0`).
pub struct Spacer<Msg> {
    pub(crate) source_loc: Option<SourceLocation>,
    _marker: PhantomData<Msg>,
}

/// Creates a flexible layout spacer.
#[track_caller]
pub fn spacer<Msg>() -> Spacer<Msg> {
    Spacer {
        source_loc: Some(SourceLocation::here("Spacer")),
        _marker: PhantomData,
    }
}

pub struct SpacerElement {
    node: Node,
}

impl<State, Msg> View<State> for Spacer<Msg> {
    type Element = SpacerElement;
    type Message = Msg;

    fn build(&self, ctx: &mut Context) -> Self::Element {
        let node = ctx.create_node();
        if let Some(loc) = self.source_loc {
            ctx.set_node_source(node, loc);
        }
        Style::new().flex_grow(1.0).apply_to_node(ctx, node);
        SpacerElement { node }
    }

    fn rebuild(&self, _prev: &Self, _ctx: &mut Context, _element: &mut Self::Element) {}

    fn teardown(&self, ctx: &mut Context, element: &mut Self::Element) {
        element.node.remove(ctx);
        ctx.destroy_node(element.node);
    }

    fn get_node(&self, element: &Self::Element) -> Node {
        element.node
    }

    fn handle_event(
        &self,
        _element: &mut Self::Element,
        _state: &State,
        _event: Event,
        _ctx: &mut Context,
    ) -> (EventResult, Option<Self::Message>) {
        (EventResult::Ignored, None)
    }
}