pub struct Receiver<T: Send + Sync> { /* private fields */ }
Expand description
Creates a receiver struct
Implementations§
source§impl<T: 'static + Send + Sync> Receiver<T>
impl<T: 'static + Send + Sync> Receiver<T>
sourcepub fn recv(&self) -> Option<T>
pub fn recv(&self) -> Option<T>
Receives a message
Examples found in repository?
examples/messages.rs (line 31)
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fn main() {
let app = app::App::default();
let mut wind = Window::default().with_size(400, 300);
let mut frame = Frame::default().size_of(&wind).with_label("0");
let mut val = 0;
wind.show();
let (s, r) = app::channel::<Message>();
std::thread::spawn(move || loop {
app::sleep(1.);
s.send(Message::Increment(2));
});
while app.wait() {
if let Some(Message::Increment(step)) = r.recv() {
inc_frame(&mut frame, &mut val, step)
}
}
}
More examples
examples/temp_converter2.rs (line 85)
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pub fn run(&mut self) {
while self.a.wait() {
if let Some(msg) = self.r.recv() {
match msg {
Message::CelciusChanged => {
self.inp2.set_value(&format!(
"{:.4}",
c_to_f(self.inp1.value().parse().unwrap_or(0.0))
));
}
Message::FahrenheitChanged => {
self.inp1.set_value(&format!(
"{:.4}",
f_to_c(self.inp2.value().parse().unwrap_or(0.0))
));
}
}
}
}
}
examples/counter2.rs (line 29)
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fn main() -> Result<(), Box<dyn std::error::Error>> {
let app = app::App::default();
let mut wind = Window::default().with_size(160, 200).with_label("Counter");
let mut pack = Pack::default().with_size(120, 140).center_of(&wind);
pack.set_spacing(10);
let mut but_inc = Button::default().with_size(0, 40).with_label("+");
let mut frame = Frame::default().with_size(0, 40).with_label("0");
let mut but_dec = Button::default().with_size(0, 40).with_label("-");
pack.end();
wind.end();
wind.show();
let (s, r) = app::channel::<Message>();
but_inc.emit(s, Message::Increment);
but_dec.emit(s, Message::Decrement);
while app.wait() {
let label: i32 = frame.label().parse()?;
if let Some(msg) = r.recv() {
match msg {
Message::Increment => frame.set_label(&(label + 1).to_string()),
Message::Decrement => frame.set_label(&(label - 1).to_string()),
}
}
}
Ok(())
}
examples/closable_tabs2.rs (line 184)
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fn main() {
use fltk::{prelude::*, *};
// Create groups to be used as content for tabs
pub fn create_tab(from: i32, to: i32) -> group::Group {
let grp = group::Group::new(0, 0, 800, 600, None);
for idx in from..to {
button::Button::new(
idx * 10 + (idx - from) * 42,
idx * 10 + (idx - from) * 42,
80,
40,
None,
)
.with_label(&format!("button {idx}"));
}
grp.end();
grp
}
let app = app::App::default();
let mut win = window::Window::default().with_size(800, 600);
let (s, r) = app::channel::<closable_tab::Message>();
let mut tabs = closable_tab::ClosableTab::new(0, 0, 800, 600, &s);
win.end();
win.show();
tabs.add(&mut create_tab(1, 3), "tab 1");
tabs.add(&mut create_tab(4, 7), "tab 2");
tabs.add(&mut create_tab(8, 11), "tab 3");
tabs.add(&mut create_tab(12, 15), "tab 4");
tabs.add(&mut create_tab(16, 22), "tab 5");
tabs.set_foreground(2);
while app.wait() {
use closable_tab::Message::*;
if let Some(msg) = r.recv() {
match msg {
Foreground(idx) => {
tabs.set_foreground(idx);
}
Delete(idx) => {
tabs.remove(idx);
}
InsertNew(_) => {}
}
}
}
}
examples/threads_windows.rs (line 60)
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fn main() -> Result<(), Box<dyn std::error::Error>> {
let app = app::App::default();
let mut wind = Window::default().with_size(160, 200).with_label("Counter");
let mut pack = Pack::default().with_size(120, 140).center_of(&wind);
pack.set_spacing(10);
let mut but_inc = Button::default().with_size(0, 40).with_label("+");
let mut frame = Frame::default().with_size(0, 40).with_label("0");
let mut but_dec = Button::default().with_size(0, 40).with_label("-");
pack.end();
wind.end();
wind.show();
let mut msg_wind = Window::default().with_size(120, 100).with_label("Message");
let mut msgview = HelpView::default().with_size(120, 100);
msgview.set_align(Align::Center);
msg_wind.end();
let (s, r) = app::channel::<Message>();
but_inc.set_callback({
move |_| {
s.send(Message::Deactivate);
thread::spawn(move || {
thread::sleep(Duration::from_secs(1));
s.send(Message::Increment);
s.send(Message::Message("Incremented"));
s.send(Message::Activate);
});
}
});
but_dec.set_callback({
move |_| {
s.send(Message::Deactivate);
thread::spawn(move || {
thread::sleep(Duration::from_secs(1));
s.send(Message::Decrement);
s.send(Message::Message("Decremented"));
s.send(Message::Activate);
});
}
});
while app.wait() {
if let Some(msg) = r.recv() {
let label: i32 = frame.label().parse()?;
match msg {
Message::Increment => frame.set_label(&(label + 1).to_string()),
Message::Decrement => frame.set_label(&(label - 1).to_string()),
Message::Activate => {
but_inc.activate();
but_dec.activate();
}
Message::Deactivate => {
but_inc.deactivate();
but_dec.deactivate();
}
Message::Message(s) => {
msgview.set_value(s);
msg_wind.show();
}
}
}
}
Ok(())
}
examples/editor.rs (line 353)
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pub fn launch(&mut self) {
while self.app.wait() {
use Message::*;
if let Some(msg) = self.r.recv() {
match msg {
Changed => {
if !self.modified {
self.modified = true;
self.menu.menu.find_item("&File/Save\t").unwrap().activate();
self.menu.menu.find_item("&File/Quit\t").unwrap().set_label_color(Color::Red);
let name = match &self.filename {
Some(f) => f.to_string_lossy().to_string(),
None => "(Untitled)".to_string(),
};
self.main_win.set_label(&format!("* {name} - RustyEd"));
}
}
New => {
if self.buf.text() != "" {
let clear = if let Some(x) = dialog::choice2(center().0 - 200, center().1 - 100, "File unsaved, Do you wish to continue?", "Yes", "No!", "") {
x == 0
} else {
false
};
if clear {
self.buf.set_text("");
}
}
},
Open => {
let mut dlg = dialog::FileDialog::new(dialog::FileDialogType::BrowseFile);
dlg.set_option(dialog::FileDialogOptions::NoOptions);
dlg.set_filter("*.{txt,rs,toml}");
dlg.show();
let filename = dlg.filename();
if !filename.to_string_lossy().to_string().is_empty() {
if filename.exists() {
match self.buf.load_file(&filename) {
Ok(_) => self.filename = Some(filename),
Err(e) => dialog::alert(center().0 - 200, center().1 - 100, &format!("An issue occured while loading the file: {e}")),
}
} else {
dialog::alert(center().0 - 200, center().1 - 100, "File does not exist!")
}
}
},
Save => { self.save_file().unwrap(); },
SaveAs => { self.save_file_as().unwrap(); },
Print => {
let mut printer = printer::Printer::default();
if printer.begin_job(0).is_ok() {
let (w, h) = printer.printable_rect();
self.printable.set_size(w - 40, h - 40);
// Needs cleanup
let line_count = self.printable.count_lines(0, self.printable.buffer().unwrap().length(), true) / 45;
for i in 0..=line_count {
self.printable.scroll(45 * i, 0);
printer.begin_page().ok();
printer.print_widget(&self.printable, 20, 20);
printer.end_page().ok();
}
printer.end_job();
}
},
Quit => {
if self.modified {
match dialog::choice2(center().0 - 200, center().1 - 100,
"Would you like to save your work?", "Yes", "No", "") {
Some(0) => {
if self.save_file().unwrap() {
self.app.quit();
}
},
Some(1) => { self.app.quit() },
Some(_) | None => (),
}
} else {
self.app.quit();
}
},
Cut => self.editor.cut(),
Copy => self.editor.copy(),
Paste => self.editor.paste(),
About => dialog::message(center().0 - 300, center().1 - 100, "This is an example application written in Rust and using the FLTK Gui library."),
}
}
}
}
Additional examples can be found in:
Trait Implementations§
impl<T: Copy + Send + Sync> Copy for Receiver<T>
impl<T: Send + Sync> Send for Receiver<T>
impl<T: Send + Sync> Sync for Receiver<T>
Auto Trait Implementations§
impl<T> RefUnwindSafe for Receiver<T>where T: RefUnwindSafe,
impl<T> Unpin for Receiver<T>where T: Unpin,
impl<T> UnwindSafe for Receiver<T>where T: UnwindSafe,
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more