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
167
168
169
170
171
172
173
174
175

use std::sync::{
    Arc,
    Mutex,
};

use freya_common::CompositorDirtyNodes;
use freya_native_core::{
    attributes::AttributeName,
    exports::shipyard::Component,
    node::OwnedAttributeValue,
    node_ref::NodeView,
    prelude::{
        AttributeMaskBuilder,
        Dependancy,
        NodeMaskBuilder,
        State,
    },
    SendAnyMap,
};
use freya_native_core_macro::partial_derive_state;

use crate::{
    parsing::ExtSplit,
    AttributesBytes,
    Border,
    CornerRadius,
    CustomAttributeValues,
    Fill,
    OverflowMode,
    Parse,
    ParseAttribute,
    ParseError,
    Shadow,
};

#[derive(Default, Debug, Clone, PartialEq, Component)]
pub struct StyleState {
    pub background: Fill,
    pub borders: Vec<Border>,
    pub shadows: Vec<Shadow>,
    pub corner_radius: CornerRadius,
    pub image_data: Option<AttributesBytes>,
    pub svg_data: Option<AttributesBytes>,
    pub overflow: OverflowMode,
}

impl ParseAttribute for StyleState {
    fn parse_attribute(
        &mut self,
        attr: freya_native_core::prelude::OwnedAttributeView<CustomAttributeValues>,
    ) -> Result<(), crate::ParseError> {
        match attr.attribute {
            AttributeName::Background => {
                if let Some(value) = attr.value.as_text() {
                    if value == "none" {
                        return Ok(());
                    }
                    self.background = Fill::parse(value)?;
                }
            }
            AttributeName::Border => {
                if let Some(value) = attr.value.as_text() {
                    self.borders = value
                        .split_excluding_group(',', '(', ')')
                        .map(|chunk| Border::parse(chunk).unwrap_or_default())
                        .collect();
                }
            }
            AttributeName::Shadow => {
                if let Some(value) = attr.value.as_text() {
                    self.shadows = value
                        .split_excluding_group(',', '(', ')')
                        .map(|chunk| Shadow::parse(chunk).unwrap_or_default())
                        .collect();
                }
            }
            AttributeName::CornerRadius => {
                if let Some(value) = attr.value.as_text() {
                    let mut radius = CornerRadius::parse(value)?;
                    radius.smoothing = self.corner_radius.smoothing;
                    self.corner_radius = radius;
                }
            }
            AttributeName::CornerSmoothing => {
                if let Some(value) = attr.value.as_text() {
                    if value.ends_with('%') {
                        let smoothing = value
                            .replacen('%', "", 1)
                            .parse::<f32>()
                            .map_err(|_| ParseError)?;
                        self.corner_radius.smoothing = (smoothing / 100.0).clamp(0.0, 1.0);
                    }
                }
            }
            AttributeName::ImageData => {
                if let OwnedAttributeValue::Custom(CustomAttributeValues::Bytes(bytes)) = attr.value
                {
                    self.image_data = Some(bytes.clone());
                }
            }
            AttributeName::SvgData => {
                if let OwnedAttributeValue::Custom(CustomAttributeValues::Bytes(bytes)) = attr.value
                {
                    self.svg_data = Some(bytes.clone());
                }
            }
            AttributeName::SvgContent => {
                let text = attr.value.as_text();
                self.svg_data =
                    text.map(|v| AttributesBytes::Dynamic(v.as_bytes().to_vec().into()));
            }
            AttributeName::Overflow => {
                if let Some(value) = attr.value.as_text() {
                    self.overflow = OverflowMode::parse(value)?;
                }
            }
            _ => {}
        }

        Ok(())
    }
}

#[partial_derive_state]
impl State<CustomAttributeValues> for StyleState {
    type ParentDependencies = ();

    type ChildDependencies = ();

    type NodeDependencies = ();

    const NODE_MASK: NodeMaskBuilder<'static> =
        NodeMaskBuilder::new().with_attrs(AttributeMaskBuilder::Some(&[
            AttributeName::Background,
            AttributeName::Layer,
            AttributeName::Border,
            AttributeName::Shadow,
            AttributeName::CornerRadius,
            AttributeName::CornerSmoothing,
            AttributeName::ImageData,
            AttributeName::SvgData,
            AttributeName::SvgContent,
            AttributeName::Overflow,
        ]));

    fn update<'a>(
        &mut self,
        node_view: NodeView<CustomAttributeValues>,
        _node: <Self::NodeDependencies as Dependancy>::ElementBorrowed<'a>,
        _parent: Option<<Self::ParentDependencies as Dependancy>::ElementBorrowed<'a>>,
        _children: Vec<<Self::ChildDependencies as Dependancy>::ElementBorrowed<'a>>,
        context: &SendAnyMap,
    ) -> bool {
        let compositor_dirty_nodes = context.get::<Arc<Mutex<CompositorDirtyNodes>>>().unwrap();
        let mut style = StyleState::default();

        if let Some(attributes) = node_view.attributes() {
            for attr in attributes {
                style.parse_safe(attr)
            }
        }

        let changed = &style != self;

        if changed {
            compositor_dirty_nodes
                .lock()
                .unwrap()
                .invalidate(node_view.node_id())
        }

        *self = style;
        changed
    }
}