carbide_core/state/
environment.rs

1use std::collections::HashMap;
2use std::fmt::Debug;
3
4use bitflags::_core::fmt::Formatter;
5use serde::Serialize;
6
7use crate::{Color, from_bin, to_bin, text};
8use crate::text::font::{Error, Id};
9use crate::widget::primitive::Widget;
10use crate::widget::types::image_information::ImageInformation;
11use crate::state::global_state::GlobalState;
12use crate::state::state::State;
13use serde::de::DeserializeOwned;
14
15pub struct Environment<GS> where GS: GlobalState {
16    stack: Vec<EnvironmentVariable>,
17    fonts: text::font::Map,
18    images_information: HashMap<crate::image_map::Id, ImageInformation>,
19    overlay_map: HashMap<String, Box<dyn Widget<GS>>>,
20    pub(crate) local_state: HashMap<String, Vec<u8>>,
21}
22
23impl<GS: GlobalState> std::fmt::Debug for Environment<GS> {
24    fn fmt(&self, _f: &mut Formatter<'_>) -> std::fmt::Result {
25        Ok(())
26    }
27}
28
29impl<GS: GlobalState> Environment<GS> {
30
31    pub fn new() -> Self {
32        Environment {
33            stack: vec![],
34            fonts: text::font::Map::new(),
35            images_information: HashMap::new(),
36            overlay_map: HashMap::new(),
37            local_state: HashMap::new()
38        }
39    }
40
41    pub fn get_image_information(&self, id: &crate::image_map::Id) -> Option<&ImageInformation> {
42        self.images_information.get(id)
43    }
44
45    pub fn insert_image(&mut self, id: crate::image_map::Id, image: ImageInformation) {
46        self.images_information.insert(id, image);
47    }
48
49    pub fn get_overlay(&mut self, id: &String) -> Option<Box<dyn Widget<GS>>> {
50        self.overlay_map.remove(id)
51    }
52
53    pub fn add_overlay(&mut self, id: &str, overlay: Box<dyn Widget<GS>>) {
54        self.overlay_map.insert(id.to_string(), overlay);
55    }
56
57    pub fn clear(&mut self) {
58        self.clear_local_state();
59        self.overlay_map.clear();
60    }
61
62    fn clear_local_state(&mut self) {
63        self.local_state.clear()
64    }
65
66    pub fn update_local_state<T: Serialize + Clone + Debug + DeserializeOwned>(&self, local_state: &mut dyn State<T, GS>) {
67        local_state.update_dependent_states(self);
68        if let Some(key) = local_state.get_key() {
69            let local_value: &Vec<u8> = match self.local_state.get(key) {
70                Some(n) => n,
71                None => return,
72            };
73            *local_state.get_latest_value_mut() = from_bin::<T>(&local_value).unwrap();
74        }
75    }
76
77    pub fn insert_local_state<T: Serialize + Clone + Debug>(&mut self, local_state: &dyn State<T, GS>) {
78        if let Some(key) = local_state.get_key() {
79            let value = local_state.get_latest_value();
80            self.local_state.insert(key.clone(), to_bin(value).unwrap());
81        }
82    }
83
84    pub fn insert_local_state_from_key_value<T: Serialize + Clone + Debug>(&mut self, key: &String, value: &T) {
85        self.local_state.insert(key.clone(), to_bin(value).unwrap());
86    }
87
88    pub fn get_fonts_map(&self) -> &text::font::Map {
89        &self.fonts
90    }
91
92    pub fn insert_font_from_file<P>(&mut self, path: P) -> Result<Id, Error>
93        where P: AsRef<std::path::Path>,
94    {
95        self.fonts.insert_from_file(path)
96
97    }
98
99    pub fn get_font(&self, id: Id) -> &rusttype::Font<'static> {
100        self.fonts.get(id).expect("No font was found with the id")
101    }
102
103    /// Adds the given `rusttype::Font` to the `Map` and returns a unique `Id` for it.
104    pub fn insert_font(&mut self, font: rusttype::Font<'static>) -> Id {
105        self.fonts.insert(font)
106    }
107
108    /*pub fn init_from_ron(ron: String) -> Self {
109        from_ron(&ron).unwrap()
110    }*/
111
112    pub fn push_vec(&mut self, value: Vec<EnvironmentVariable>) {
113        for v in value {
114            self.push(v);
115        }
116    }
117
118    pub fn push(&mut self, value: EnvironmentVariable) {
119        self.stack.push(value);
120    }
121
122    pub fn pop(&mut self) {
123        self.stack.pop();
124    }
125}
126
127
128pub enum EnvironmentVariable {
129    String{key: String, value: String},
130    U32{key: String, value: u32},
131    F64{key: String, value: f64},
132    Color{key: String, value: Color},
133    I32{key: String, value: i32},
134}
carbide_core/state/environment.rs

carbide_core/state/
environment.rs
