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feat(rdp): text clipboard sharing in both directions

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A CLIPRDR channel with a text-only backend (CF_UNICODETEXT): text copied
on the remote desktop is fetched and goes through the app's remote-
clipboard preference like VNC and OSC 52; local text is offered to the
remote when the desktop gains focus, on Ctrl+V and with Paste Clipboard
(which no longer types the text). Backend callbacks run inside the
active stage, so they queue requests that the session loop sends.

Verified against xrdp: the remote X clipboard read back the offered
text, and a remote copy arrived through on_clipboard.
This commit is contained in:
Andy Dixon
2026-10-12 17:47:22 +01:00
parent 4256d45633
commit 6476ccff28
9 changed files with 152 additions and 21 deletions
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rust/app/src/app.rs
+1 -1
View File
@@ -528,7 +528,7 @@ impl App {
}
}
Event::DesktopFrame { .. } => {}
Event::VncClipboard { text, .. } => self.remote_clipboard(&text),
Event::DesktopClipboard { text, .. } => self.remote_clipboard(&text),
}
}
rust/app/src/desktop_view.rs
+15 -13
View File
@@ -284,7 +284,7 @@ impl DesktopView {
self.buttons = 0;
}
/// VNC: sets the remote clipboard. RDP (no clipboard channel yet): types the text.
/// Makes `text` the remote desktop's clipboard contents.
fn paste(&self, s: &mut Shared, text: &str) {
match &self.client {
Some(Remote::Vnc(c)) => {
@@ -292,12 +292,7 @@ impl DesktopView {
s.error(format!("Clipboard: {e}"));
}
}
Some(Remote::Rdp(c)) => c.input(
text.chars()
.filter(|c| !c.is_control() || *c == '\n')
.flat_map(|ch| [Operation::UnicodeKeyPressed(ch), Operation::UnicodeKeyReleased(ch)])
.collect(),
),
Some(Remote::Rdp(c)) => c.set_clipboard(text.to_string()),
None => {}
}
}
@@ -421,12 +416,10 @@ impl DesktopView {
let _ = c.request_full_update();
}
if !self.view_only {
let tip = if self.protocol == Protocol::Rdp {
"Type the local clipboard's text into the remote desktop"
} else {
"Send the local clipboard to the remote desktop"
};
if widgets::button(ui, icon::CLIPBOARD_TEXT, "Paste Clipboard").on_hover_text(tip).clicked() {
if widgets::button(ui, icon::CLIPBOARD_TEXT, "Paste Clipboard")
.on_hover_text("Send the local clipboard to the remote desktop")
.clicked()
{
match arboard::Clipboard::new().and_then(|mut c| c.get_text()) {
Ok(text) if !text.is_empty() => {
self.paste(s, &text);
@@ -453,6 +446,15 @@ impl DesktopView {
resp.request_focus();
}
let focused = resp.has_focus();
// RDP shares the clipboard both ways: offer the local text whenever the desktop gains focus.
if focused
&& !self.had_focus
&& let Some(Remote::Rdp(c)) = &self.client
&& let Ok(text) = arboard::Clipboard::new().and_then(|mut c| c.get_text())
&& !text.is_empty()
{
c.set_clipboard(text);
}
if focused {
ui.painter().rect_stroke(img, 0.0, egui::Stroke::new(1.0, Tokens::get(ui.ctx()).accent.gamma_multiply(0.6)), egui::StrokeKind::Outside);
ui.memory_mut(|m| m.set_focus_lock_filter(id, egui::EventFilter { tab: true, horizontal_arrows: true, vertical_arrows: true, escape: true }));