mirror of
https://github.com/slint-ui/slint.git
synced 2025-08-03 02:13:21 +00:00
0f6c3a4fd7
This removes a lot of allocations and speeds up the compiler step
a bit. Sadly, this patch is very invasive as it touches a lot of
files. That said, each individual hunk is pretty trivial.
For a non-trivial real-world example, the impact is significant,
we get rid of ~29% of all allocations and improve the runtime by
about 4.8% (measured until the viewer loop would start).
Before:
```
Benchmark 1: ./target/release/slint-viewer ../slint-perf/app.slint
Time (mean ± σ): 664.2 ms ± 6.7 ms [User: 589.2 ms, System: 74.0 ms]
Range (min … max): 659.0 ms … 682.4 ms 10 runs
allocations: 4886888
temporary allocations: 857508
```
After:
```
Benchmark 1: ./target/release/slint-viewer ../slint-perf/app.slint
Time (mean ± σ): 639.5 ms ± 17.8 ms [User: 556.9 ms, System: 76.2 ms]
Range (min … max): 621.4 ms … 666.5 ms 10 runs
allocations: 3544318
temporary allocations: 495685
```
40 lines
1.6 KiB
Rust
40 lines
1.6 KiB
Rust
// Copyright © SixtyFPS GmbH <info@slint.dev>
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// SPDX-License-Identifier: GPL-3.0-only OR LicenseRef-Slint-Royalty-free-2.0 OR LicenseRef-Slint-Software-3.0
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//! Pass that applies the default border-radius to border-top|bottom-left|right-radius.
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use crate::diagnostics::BuildDiagnostics;
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use crate::expression_tree::{Expression, NamedReference};
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use crate::object_tree::Component;
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use smol_str::SmolStr;
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use std::rc::Rc;
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pub const BORDER_RADIUS_PROPERTIES: [&str; 4] = [
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"border-top-left-radius",
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"border-top-right-radius",
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"border-bottom-right-radius",
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"border-bottom-left-radius",
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];
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pub fn handle_border_radius(root_component: &Rc<Component>, _diag: &mut BuildDiagnostics) {
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crate::object_tree::recurse_elem_including_sub_components_no_borrow(
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root_component,
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&(),
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&mut |elem, _| {
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let bty = if let Some(bty) = elem.borrow().builtin_type() { bty } else { return };
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if bty.name == "Rectangle"
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&& elem.borrow().is_binding_set("border-radius", true)
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&& BORDER_RADIUS_PROPERTIES
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.iter()
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.any(|property_name| elem.borrow().is_binding_set(property_name, true))
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{
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let border_radius = NamedReference::new(elem, "border-radius");
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for property_name in BORDER_RADIUS_PROPERTIES.iter() {
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elem.borrow_mut().set_binding_if_not_set(SmolStr::new(property_name), || {
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Expression::PropertyReference(border_radius.clone())
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});
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}
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}
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},
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)
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}
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