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Introduce backend feature flags in iced_renderer

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Héctor Ramón Jiménez 2023-03-06 22:10:13 +01:00
parent 06bbcc310e
commit 9b4bcd287a
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GPG key ID: 140CC052C94F138E
6 changed files with 147 additions and 93 deletions
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76
renderer/src/backend.rs
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@ -6,16 +6,26 @@ use std::borrow::Cow;
#[allow(clippy::large_enum_variant)]
pub enum Backend {
#[cfg(feature = "wgpu")]
Wgpu(iced_wgpu::Backend),
#[cfg(feature = "tiny-skia")]
TinySkia(iced_tiny_skia::Backend),
}
macro_rules! delegate {
($backend:expr, $name:ident, $body:expr) => {
match $backend {
#[cfg(feature = "wgpu")]
Self::Wgpu($name) => $body,
#[cfg(feature = "tiny-skia")]
Self::TinySkia($name) => $body,
}
};
}
impl iced_graphics::Backend for Backend {
fn trim_measurements(&mut self) {
match self {
Self::Wgpu(backend) => backend.trim_measurements(),
Self::TinySkia(backend) => backend.trim_measurements(),
}
delegate!(self, backend, backend.trim_measurements());
}
}
@ -25,17 +35,11 @@ impl backend::Text for Backend {
const ARROW_DOWN_ICON: char = '\u{e800}';
fn default_font(&self) -> Font {
match self {
Self::Wgpu(backend) => backend.default_font(),
Self::TinySkia(backend) => backend.default_font(),
}
delegate!(self, backend, backend.default_font())
}
fn default_size(&self) -> f32 {
match self {
Self::Wgpu(backend) => backend.default_size(),
Self::TinySkia(backend) => backend.default_size(),
}
delegate!(self, backend, backend.default_size())
}
fn measure(
@ -45,14 +49,7 @@ impl backend::Text for Backend {
font: Font,
bounds: Size,
) -> (f32, f32) {
match self {
Self::Wgpu(backend) => {
backend.measure(contents, size, font, bounds)
}
Self::TinySkia(backend) => {
backend.measure(contents, size, font, bounds)
}
}
delegate!(self, backend, backend.measure(contents, size, font, bounds))
}
fn hit_test(
@ -64,45 +61,29 @@ impl backend::Text for Backend {
position: Point,
nearest_only: bool,
) -> Option<text::Hit> {
match self {
Self::Wgpu(backend) => backend.hit_test(
delegate!(
self,
backend,
backend.hit_test(
contents,
size,
font,
bounds,
position,
nearest_only,
),
Self::TinySkia(backend) => backend.hit_test(
contents,
size,
font,
bounds,
position,
nearest_only,
),
}
nearest_only
)
)
}
fn load_font(&mut self, font: Cow<'static, [u8]>) {
match self {
Self::Wgpu(backend) => {
backend.load_font(font);
}
Self::TinySkia(backend) => {
backend.load_font(font);
}
}
delegate!(self, backend, backend.load_font(font));
}
}
#[cfg(feature = "image")]
impl backend::Image for Backend {
fn dimensions(&self, handle: &crate::core::image::Handle) -> Size<u32> {
match self {
Self::Wgpu(backend) => backend.dimensions(handle),
Self::TinySkia(backend) => backend.dimensions(handle),
}
delegate!(self, backend, backend.dimensions(handle))
}
}
@ -112,9 +93,6 @@ impl backend::Svg for Backend {
&self,
handle: &crate::core::svg::Handle,
) -> Size<u32> {
match self {
Self::Wgpu(backend) => backend.viewport_dimensions(handle),
Self::TinySkia(backend) => backend.viewport_dimensions(handle),
}
delegate!(self, backend, backend.viewport_dimensions(handle))
}
}