freya_core/states/
svg.rs

1use std::sync::{
2    Arc,
3    Mutex,
4};
5
6use freya_native_core::{
7    attributes::AttributeName,
8    exports::shipyard::Component,
9    node::{
10        NodeType,
11        OwnedAttributeValue,
12    },
13    node_ref::NodeView,
14    prelude::{
15        AttributeMaskBuilder,
16        Dependancy,
17        NodeMaskBuilder,
18        State,
19    },
20    tags::TagName,
21    SendAnyMap,
22};
23use freya_native_core_macro::partial_derive_state;
24
25use crate::{
26    custom_attributes::{
27        AttributesBytes,
28        CustomAttributeValues,
29    },
30    dom::CompositorDirtyNodes,
31    parsing::{
32        Parse,
33        ParseAttribute,
34        ParseError,
35    },
36    values::SvgPaint,
37};
38
39#[derive(Default, Debug, Clone, PartialEq, Component)]
40pub struct SvgState {
41    pub svg_fill: Option<SvgPaint>,
42    pub svg_stroke: Option<SvgPaint>,
43    pub svg_data: Option<AttributesBytes>,
44}
45
46impl ParseAttribute for SvgState {
47    fn parse_attribute(
48        &mut self,
49        attr: freya_native_core::prelude::OwnedAttributeView<CustomAttributeValues>,
50    ) -> Result<(), ParseError> {
51        match attr.attribute {
52            AttributeName::SvgData => {
53                if let OwnedAttributeValue::Custom(CustomAttributeValues::Bytes(bytes)) = attr.value
54                {
55                    self.svg_data = Some(bytes.clone());
56                }
57            }
58            AttributeName::Fill => {
59                if let Some(value) = attr.value.as_text() {
60                    if value == "none" {
61                        return Ok(());
62                    }
63                    self.svg_fill = Some(SvgPaint::parse(value)?);
64                }
65            }
66            AttributeName::Stroke => {
67                if let Some(value) = attr.value.as_text() {
68                    if value == "none" {
69                        return Ok(());
70                    }
71                    self.svg_stroke = Some(SvgPaint::parse(value)?);
72                }
73            }
74            AttributeName::SvgContent => {
75                let text = attr.value.as_text();
76                self.svg_data =
77                    text.map(|v| AttributesBytes::Dynamic(v.as_bytes().to_vec().into()));
78            }
79            _ => {}
80        }
81
82        Ok(())
83    }
84}
85
86#[partial_derive_state]
87impl State<CustomAttributeValues> for SvgState {
88    type ParentDependencies = ();
89
90    type ChildDependencies = ();
91
92    type NodeDependencies = ();
93
94    const NODE_MASK: NodeMaskBuilder<'static> =
95        NodeMaskBuilder::new().with_attrs(AttributeMaskBuilder::Some(&[
96            AttributeName::Fill,
97            AttributeName::Stroke,
98            AttributeName::SvgData,
99            AttributeName::SvgContent,
100        ]));
101
102    fn allow_node(node_type: &NodeType<CustomAttributeValues>) -> bool {
103        node_type.tag() == Some(&TagName::Svg)
104    }
105
106    fn update<'a>(
107        &mut self,
108        node_view: NodeView<CustomAttributeValues>,
109        _node: <Self::NodeDependencies as Dependancy>::ElementBorrowed<'a>,
110        _parent: Option<<Self::ParentDependencies as Dependancy>::ElementBorrowed<'a>>,
111        _children: Vec<<Self::ChildDependencies as Dependancy>::ElementBorrowed<'a>>,
112        context: &SendAnyMap,
113    ) -> bool {
114        let mut style = SvgState::default();
115
116        if let Some(attributes) = node_view.attributes() {
117            for attr in attributes {
118                style.parse_safe(attr)
119            }
120        }
121
122        let changed = &style != self;
123        if changed {
124            let compositor_dirty_nodes = context.get::<Arc<Mutex<CompositorDirtyNodes>>>().unwrap();
125            compositor_dirty_nodes
126                .lock()
127                .unwrap()
128                .invalidate(node_view.node_id());
129        }
130
131        *self = style;
132        changed
133    }
134}
freya_core/states/svg.rs

freya_core/states/
svg.rs
