orbtk 0.2.31

The Orbital Widget 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

use orbclient::Renderer;
use std::cell::{Cell, RefCell};
use std::sync::Arc;

use cell::CloneCell;
use event::Event;
use rect::Rect;
use point::Point;
use thickness::Thickness;
use theme::{Selector, Theme};
use traits::{Place, Style};
use widgets::{HorizontalPlacement, VerticalPlacement, Widget};

pub struct TextWidget {
    pub rect: Cell<Rect>,
    local_position: Cell<Point>,
    vertical_placement: Cell<VerticalPlacement>,
    horizontal_placement: Cell<HorizontalPlacement>,
    margin: Cell<Thickness>,
    children: RefCell<Vec<Arc<dyn Widget>>>,
    pub selector: CloneCell<Selector>,
    pub text: CloneCell<String>,
}

impl TextWidget {
    pub fn new() -> Arc<Self> {
        let text_widget = Arc::new(TextWidget {
            rect: Cell::new(Rect::new(0, 0, 0, 16)),
            local_position: Cell::new(Point::new(0, 0)),
            vertical_placement: Cell::new(VerticalPlacement::Absolute),
            horizontal_placement: Cell::new(HorizontalPlacement::Absolute),
            margin: Cell::new(Thickness::default()),
            children: RefCell::new(vec![]),
            selector: CloneCell::new(Selector::new(Some("Text"))),
            text: CloneCell::new(String::new()),
        });

        let text_widget_clone = text_widget.clone();
        text_widget.text.on_changed(move |value: String| {
            text_widget_clone.adjust_width(value.len() as u32);
        });

        text_widget
    }

    pub fn text<S: Into<String>>(&self, text: S) -> &Self {
        self.text.set(text.into());
        self.adjust_width(self.text.get().len() as u32);
        self
    }

    pub fn inner_text(&self) -> &CloneCell<String> {
        &self.text
    }

    fn adjust_width(&self, text_len: u32) {
        let mut rect = self.rect.get();
        rect.width = text_len * 8;
        self.rect.set(rect);
    }
}

impl Place for TextWidget {}

impl Style for TextWidget {
    fn selector(&self) -> &CloneCell<Selector> {
        &self.selector
    }
}

impl Widget for TextWidget {
    fn name(&self) -> &str {
        "Text"
    }

    fn rect(&self) -> &Cell<Rect> {
        &self.rect
    }

    fn vertical_placement(&self) -> &Cell<VerticalPlacement> {
        &self.vertical_placement
    }

    fn horizontal_placement(&self) -> &Cell<HorizontalPlacement> {
        &self.horizontal_placement
    }

    fn margin(&self) -> &Cell<Thickness> {
        &self.margin
    }

    fn local_position(&self) -> &Cell<Point> {
        &self.local_position
    }

    fn draw(&self, renderer: &mut dyn Renderer, _focused: bool, theme: &Theme) {
        let rect = self.rect().get();
        let mut current_rect = self.rect().get();
        let x = rect.x;
        let selector = &self.selector().get();
        let text = self.text.get();

        for c in text.chars() {
            if c == '\n' {
                current_rect.x = x;
                current_rect.y += 16;
            } else {
                if current_rect.x + 8 <= rect.x + rect.width as i32
                    && current_rect.y + 16 <= rect.y + rect.height as i32
                {
                    renderer.char(
                        current_rect.x,
                        current_rect.y,
                        c,
                        theme.color("color", selector),
                    );
                }
                current_rect.x += 8;
            }
        }
    }

    fn event(&self, _event: Event, _focused: bool, _redraw: &mut bool, _caught: &mut bool) -> bool {
        _focused
    }

    fn children(&self) -> &RefCell<Vec<Arc<dyn Widget>>> {
        &self.children
    }
}