egui/crates/egui-winit/src/clipboard.rs
2022-08-20 10:41:49 +02:00

142 lines
4.1 KiB
Rust

use std::os::raw::c_void;
/// Handles interfacing with the OS clipboard.
///
/// If the "clipboard" feature is off, or we cannot connect to the OS clipboard,
/// then a fallback clipboard that just works works within the same app is used instead.
pub struct Clipboard {
#[cfg(all(feature = "arboard", not(target_os = "android")))]
arboard: Option<arboard::Clipboard>,
#[cfg(all(
any(
target_os = "linux",
target_os = "dragonfly",
target_os = "freebsd",
target_os = "netbsd",
target_os = "openbsd"
),
feature = "smithay-clipboard"
))]
smithay: Option<smithay_clipboard::Clipboard>,
/// Fallback manual clipboard.
clipboard: String,
}
impl Clipboard {
#[allow(unused_variables)]
pub fn new(#[allow(unused_variables)] wayland_display: Option<*mut c_void>) -> Self {
Self {
#[cfg(all(feature = "arboard", not(target_os = "android")))]
arboard: init_arboard(),
#[cfg(all(
any(
target_os = "linux",
target_os = "dragonfly",
target_os = "freebsd",
target_os = "netbsd",
target_os = "openbsd"
),
feature = "smithay-clipboard"
))]
smithay: init_smithay_clipboard(wayland_display),
clipboard: Default::default(),
}
}
pub fn get(&mut self) -> Option<String> {
#[cfg(all(
any(
target_os = "linux",
target_os = "dragonfly",
target_os = "freebsd",
target_os = "netbsd",
target_os = "openbsd"
),
feature = "smithay-clipboard"
))]
if let Some(clipboard) = &mut self.smithay {
return match clipboard.load() {
Ok(text) => Some(text),
Err(err) => {
tracing::error!("Paste error: {}", err);
None
}
};
}
#[cfg(all(feature = "arboard", not(target_os = "android")))]
if let Some(clipboard) = &mut self.arboard {
return match clipboard.get_text() {
Ok(text) => Some(text),
Err(err) => {
tracing::error!("Paste error: {}", err);
None
}
};
}
Some(self.clipboard.clone())
}
pub fn set(&mut self, text: String) {
#[cfg(all(
any(
target_os = "linux",
target_os = "dragonfly",
target_os = "freebsd",
target_os = "netbsd",
target_os = "openbsd"
),
feature = "smithay-clipboard"
))]
if let Some(clipboard) = &mut self.smithay {
clipboard.store(text);
return;
}
#[cfg(all(feature = "arboard", not(target_os = "android")))]
if let Some(clipboard) = &mut self.arboard {
if let Err(err) = clipboard.set_text(text) {
tracing::error!("Copy/Cut error: {}", err);
}
return;
}
self.clipboard = text;
}
}
#[cfg(all(feature = "arboard", not(target_os = "android")))]
fn init_arboard() -> Option<arboard::Clipboard> {
match arboard::Clipboard::new() {
Ok(clipboard) => Some(clipboard),
Err(err) => {
tracing::error!("Failed to initialize clipboard: {}", err);
None
}
}
}
#[cfg(all(
any(
target_os = "linux",
target_os = "dragonfly",
target_os = "freebsd",
target_os = "netbsd",
target_os = "openbsd"
),
feature = "smithay-clipboard"
))]
fn init_smithay_clipboard(
wayland_display: Option<*mut c_void>,
) -> Option<smithay_clipboard::Clipboard> {
if let Some(display) = wayland_display {
#[allow(unsafe_code)]
Some(unsafe { smithay_clipboard::Clipboard::new(display) })
} else {
tracing::error!("Cannot initialize smithay clipboard without a display handle!");
None
}
}