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macOS: Feature-gate CGSSetWindowBackgroundBlurRadius

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Behind the Cargo feature `private-apple-apis`.
This commit is contained in:
Mads Marquart
2026-03-24 15:18:49 +01:00
committed by Simon Hausmann
parent 6b113977d8
commit 0ea5f3c875
7 changed files with 30 additions and 24 deletions
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1
winit-appkit/Cargo.toml
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@@ -9,6 +9,7 @@ rust-version.workspace = true
version.workspace = true
[features]
private-apple-apis = []
serde = ["dep:serde", "bitflags/serde", "smol_str/serde", "dpi/serde"]
[dependencies]

13
winit-appkit/src/ffi.rs
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@@ -4,8 +4,6 @@
use std::ffi::c_void;
use objc2::ffi::NSInteger;
use objc2::runtime::AnyObject;
use objc2_core_foundation::{CFString, CFUUID, cf_type};
use objc2_core_graphics::CGDirectDisplayID;
@@ -28,17 +26,6 @@ unsafe extern "C" {
pub fn CGDisplayGetDisplayIDFromUUID(uuid: &CFUUID) -> CGDirectDisplayID;
}
#[link(name = "CoreGraphics", kind = "framework")]
unsafe extern "C" {
// Wildly used private APIs; Apple uses them for their Terminal.app.
pub fn CGSMainConnectionID() -> *mut AnyObject;
pub fn CGSSetWindowBackgroundBlurRadius(
connection_id: *mut AnyObject,
window_id: NSInteger,
radius: i64,
) -> i32;
}
#[repr(transparent)]
pub struct TISInputSource(std::ffi::c_void);

34
winit-appkit/src/window_delegate.rs
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@@ -57,7 +57,6 @@ use winit_core::window::{
use super::app_state::AppState;
use super::cursor::{CustomCursor, cursor_from_icon};
use super::ffi;
use super::monitor::{self, MonitorHandle, flip_window_screen_coordinates, get_display_id};
use super::util::cgerr;
use super::view::WinitView;
@@ -1101,17 +1100,30 @@ impl WindowDelegate {
}
pub fn set_blur(&self, blur: bool) {
// NOTE: in general we want to specify the blur radius, but the choice of 80
// should be a reasonable default.
let radius = if blur { 80 } else { 0 };
let window_number = self.window().windowNumber();
unsafe {
ffi::CGSSetWindowBackgroundBlurRadius(
ffi::CGSMainConnectionID(),
window_number,
radius,
);
#[cfg(feature = "private-apple-apis")]
{
#[link(name = "CoreGraphics", kind = "framework")]
unsafe extern "C" {
// Wildly used private APIs; Apple uses them for their Terminal.app.
pub fn CGSMainConnectionID() -> *mut objc2::runtime::AnyObject;
pub fn CGSSetWindowBackgroundBlurRadius(
connection_id: *mut objc2::runtime::AnyObject,
window_id: objc2_foundation::NSInteger,
radius: i64,
) -> i32;
}
// NOTE: in general we want to specify the blur radius, but the choice of 80
// should be a reasonable default.
let radius = if blur { 80 } else { 0 };
let window_number = self.window().windowNumber();
unsafe {
CGSSetWindowBackgroundBlurRadius(CGSMainConnectionID(), window_number, radius)
};
}
// TODO: Implement blur using public methods somehow?
let _ = blur;
}
pub fn set_visible(&self, visible: bool) {