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use crate::core::{self, Size};
use crate::image::atlas::{self, Atlas};
use std::cell::{RefCell, RefMut};
use std::rc::Rc;
#[derive(Debug)]
pub struct Cache {
atlas: Atlas,
#[cfg(feature = "image")]
raster: crate::image::raster::Cache,
#[cfg(feature = "svg")]
vector: crate::image::vector::Cache,
}
impl Cache {
pub fn new(device: &wgpu::Device, backend: wgpu::Backend) -> Self {
Self {
atlas: Atlas::new(device, backend),
#[cfg(feature = "image")]
raster: crate::image::raster::Cache::default(),
#[cfg(feature = "svg")]
vector: crate::image::vector::Cache::default(),
}
}
pub fn layer_count(&self) -> usize {
self.atlas.layer_count()
}
#[cfg(feature = "image")]
pub fn measure_image(&mut self, handle: &core::image::Handle) -> Size<u32> {
self.raster.load(handle).dimensions()
}
#[cfg(feature = "svg")]
pub fn measure_svg(&mut self, handle: &core::svg::Handle) -> Size<u32> {
self.vector.load(handle).viewport_dimensions()
}
#[cfg(feature = "image")]
pub fn upload_raster(
&mut self,
device: &wgpu::Device,
encoder: &mut wgpu::CommandEncoder,
handle: &core::image::Handle,
) -> Option<&atlas::Entry> {
self.raster.upload(device, encoder, handle, &mut self.atlas)
}
#[cfg(feature = "svg")]
pub fn upload_vector(
&mut self,
device: &wgpu::Device,
encoder: &mut wgpu::CommandEncoder,
handle: &core::svg::Handle,
color: Option<core::Color>,
size: [f32; 2],
scale: f32,
) -> Option<&atlas::Entry> {
self.vector.upload(
device,
encoder,
handle,
color,
size,
scale,
&mut self.atlas,
)
}
pub fn create_bind_group(
&self,
device: &wgpu::Device,
layout: &wgpu::BindGroupLayout,
) -> wgpu::BindGroup {
device.create_bind_group(&wgpu::BindGroupDescriptor {
label: Some("iced_wgpu::image texture atlas bind group"),
layout,
entries: &[wgpu::BindGroupEntry {
binding: 0,
resource: wgpu::BindingResource::TextureView(self.atlas.view()),
}],
})
}
pub fn trim(&mut self) {
#[cfg(feature = "image")]
self.raster.trim(&mut self.atlas);
#[cfg(feature = "svg")]
self.vector.trim(&mut self.atlas);
}
}
#[derive(Debug, Clone)]
pub struct Shared(Rc<RefCell<Cache>>);
impl Shared {
pub fn new(cache: Cache) -> Self {
Self(Rc::new(RefCell::new(cache)))
}
pub fn lock(&self) -> RefMut<'_, Cache> {
self.0.borrow_mut()
}
}
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