telar-ui-core 0.1.5

Widget kernel for Telar: containers, text, input handling, scrolling and canvas primitives.
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

use geometry_core::Rect;
use layout_core::{LayoutError, LayoutStyle};
use platform_core::Event;
use renderer_core::RectStyle;
use ui_tree::{Component, EventResult, RenderNode};

use crate::impl_leaf_widget;
use crate::layout_leaf::LayoutLeaf;

pub struct Rectangle {
    leaf: LayoutLeaf,
    style: Box<dyn Fn() -> RectStyle>,
}

impl Rectangle {
    pub fn new(
        layout_style: LayoutStyle,
        style: impl Fn() -> RectStyle + 'static,
    ) -> Result<Self, LayoutError> {
        let leaf = LayoutLeaf::register(layout_style)?;
        Ok(Self {
            leaf,
            style: Box::new(style),
        })
    }
}

impl Component for Rectangle {
    fn view(&self) -> RenderNode {
        let r = self.leaf.rect.get();
        let style = (self.style)();
        self.leaf.at_layout_position(RenderNode::rect(
            Rect {
                x: 0.0,
                y: 0.0,
                width: r.width,
                height: r.height,
            },
            style,
        ))
    }

    fn on_event(&mut self, _event: &Event) -> EventResult {
        EventResult::Ignored
    }

    fn debug_name(&self) -> &'static str {
        "Rectangle"
    }
}

impl_leaf_widget!(Rectangle);