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use std::collections::BTreeMap;
use std::sync::LazyLock;
use scene::params::ParamValues;
use crate::definitions::default_graphic_definitions;
use crate::error::GraphicsError;
use crate::params::build_default_param_values;
use crate::types::{GraphicDefinition, GraphicInstance};
#[derive(Default)]
pub struct GraphicsRegistry {
definitions: BTreeMap<String, &'static GraphicDefinition>,
}
impl GraphicsRegistry {
pub fn new() -> Self {
Self::default()
}
pub fn with_defaults() -> Self {
let mut registry = Self::new();
registry.register_defaults();
registry
}
pub fn register_defaults(&mut self) {
for definition in default_graphic_definitions() {
if self.has(definition.id) {
continue;
}
self.register(definition.id, definition);
}
}
pub fn register(&mut self, key: &str, definition: &'static GraphicDefinition) {
self.definitions.insert(key.to_string(), definition);
}
pub fn has(&self, key: &str) -> bool {
self.definitions.contains_key(key)
}
pub fn get(&self, key: &str) -> Result<&'static GraphicDefinition, GraphicsError> {
self.definitions
.get(key)
.copied()
.ok_or_else(|| GraphicsError::UnknownGraphic(key.to_string()))
}
pub fn get_all(&self) -> Vec<&'static GraphicDefinition> {
self.definitions.values().copied().collect()
}
}
static REGISTRY: LazyLock<GraphicsRegistry> = LazyLock::new(GraphicsRegistry::with_defaults);
pub fn graphics_registry() -> &'static GraphicsRegistry {
®ISTRY
}
pub fn get_graphic_definition(
definition_id: &str,
) -> Result<&'static GraphicDefinition, GraphicsError> {
graphics_registry().get(definition_id)
}
pub fn build_default_graphic_instance(
definition_id: &str,
) -> Result<GraphicInstance, GraphicsError> {
let definition = get_graphic_definition(definition_id)?;
Ok(GraphicInstance {
definition_id: definition_id.to_string(),
params: build_default_param_values(definition.params),
})
}
pub fn resolve_graphic_params(
definition: &GraphicDefinition,
params: Option<&ParamValues>,
) -> ParamValues {
let mut resolved = build_default_param_values(definition.params);
if let Some(params) = params {
resolved.extend(params.clone());
}
resolved
}
pub fn render_graphic(
definition_id: &str,
params: Option<&ParamValues>,
width: u32,
height: u32,
) -> Result<tiny_skia::Pixmap, GraphicsError> {
let definition = get_graphic_definition(definition_id)?;
let resolved = resolve_graphic_params(definition, params);
definition.render_to_pixmap(&resolved, width, height)
}
pub fn render_graphic_rgba8(
definition_id: &str,
params: Option<&ParamValues>,
width: u32,
height: u32,
) -> Result<Vec<u8>, GraphicsError> {
Ok(render_graphic(definition_id, params, width, height)?.take())
}
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