svg.rs

 1use crate::{
 2    AnyElement, Bounds, Component, Element, ElementId, InteractiveComponent,
 3    InteractiveElementState, Interactivity, LayoutId, Pixels, SharedString, StyleRefinement,
 4    Styled, ViewContext,
 5};
 6use util::ResultExt;
 7
 8pub struct Svg<V: 'static> {
 9    interactivity: Interactivity<V>,
10    path: Option<SharedString>,
11}
12
13pub fn svg<V: 'static>() -> Svg<V> {
14    Svg {
15        interactivity: Interactivity::default(),
16        path: None,
17    }
18}
19
20impl<V> Svg<V> {
21    pub fn path(mut self, path: impl Into<SharedString>) -> Self {
22        self.path = Some(path.into());
23        self
24    }
25}
26
27impl<V> Component<V> for Svg<V> {
28    fn render(self) -> AnyElement<V> {
29        AnyElement::new(self)
30    }
31}
32
33impl<V> Element<V> for Svg<V> {
34    type ElementState = InteractiveElementState;
35
36    fn element_id(&self) -> Option<ElementId> {
37        self.interactivity.element_id.clone()
38    }
39
40    fn initialize(
41        &mut self,
42        _view_state: &mut V,
43        element_state: Option<Self::ElementState>,
44        cx: &mut ViewContext<V>,
45    ) -> Self::ElementState {
46        self.interactivity.initialize(element_state, cx)
47    }
48
49    fn layout(
50        &mut self,
51        _view_state: &mut V,
52        element_state: &mut Self::ElementState,
53        cx: &mut ViewContext<V>,
54    ) -> LayoutId {
55        self.interactivity.layout(element_state, cx, |style, cx| {
56            cx.request_layout(&style, None)
57        })
58    }
59
60    fn paint(
61        &mut self,
62        bounds: Bounds<Pixels>,
63        _view_state: &mut V,
64        element_state: &mut Self::ElementState,
65        cx: &mut ViewContext<V>,
66    ) where
67        Self: Sized,
68    {
69        self.interactivity
70            .paint(bounds, bounds.size, element_state, cx, |style, _, cx| {
71                if let Some((path, color)) = self.path.as_ref().zip(style.text.color) {
72                    cx.paint_svg(bounds, path.clone(), color).log_err();
73                }
74            })
75    }
76}
77
78impl<V> Styled for Svg<V> {
79    fn style(&mut self) -> &mut StyleRefinement {
80        &mut self.interactivity.base_style
81    }
82}
83
84impl<V> InteractiveComponent<V> for Svg<V> {
85    fn interactivity(&mut self) -> &mut Interactivity<V> {
86        &mut self.interactivity
87    }
88}