pub fn event_key() -> KeyExpand description
Returns the pressed key
Examples found in repository?
examples/spreadsheet.rs (line 160)
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fn main() {
let app = app::App::default().with_scheme(app::Scheme::Gtk);
let mut wind = window::Window::default().with_size(800, 600);
// We need an input widget
let mut inp = input::Input::default();
inp.hide();
let mut table = MyTable::new(inp.clone());
wind.make_resizable(true);
wind.end();
wind.show();
wind.handle(move |_, ev| match ev {
enums::Event::KeyDown => {
if app::event_key() == enums::Key::Enter {
// Press enter to store the data into the cell
let c = table.cell.borrow();
table.data.borrow_mut()[c.row as usize][c.col as usize] = inp.value();
inp.set_value("");
inp.hide();
return true;
}
table.redraw();
false
}
_ => false,
});
wind.set_callback(|_| {
if app::event() == enums::Event::Close {
// Close only when the close button is clicked
app::quit();
}
});
app.run().unwrap();
}More examples
examples/terminal.rs (line 293)
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fn main() {
let app = fltk::app::App::default();
let mut main_win = Window::new(
2285,
180,
WIN_WIDTH,
WIN_HEIGHT,
"FLTK/Terminal Rust wrapper test",
);
main_win.set_type(WindowType::Double);
main_win.make_resizable(true);
let mut menu_bar = MenuBar::new(0, 0, WIN_WIDTH, 30, None);
let idx = menu_bar.add_choice("Test&1");
let mut term = Terminal::new(0, 30, WIN_WIDTH, WIN_HEIGHT - 30, None);
term.set_label("term");
main_win.resizable(&term);
term.set_label_type(LabelType::None);
menu_bar.at(idx).unwrap().set_callback({
let mut term1 = term.clone();
move |c| mb_test1_cb(c, &mut term1)
});
menu_bar
.at(idx)
.unwrap()
.set_shortcut(unsafe { std::mem::transmute(0x80031) }); // Alt-1
let idx = menu_bar.add_choice("Test&2");
menu_bar.at(idx).unwrap().set_callback({
let mut term1 = term.clone();
move |c| mb_test2_cb(c, &mut term1)
});
menu_bar
.at(idx)
.unwrap()
.set_shortcut(unsafe { std::mem::transmute(0x80032) }); // Alt-2
menu_bar.end();
main_win.end();
main_win.show();
// Worker thread that drives the startup tests
let _worker_thread: std::thread::JoinHandle<_> = std::thread::spawn({
let mut term = term.clone();
move || {
println!("Startup tests\n");
term.append("Startup tests\n\n");
// Testing ansi() and set_ansi() methods
assert!(term.ansi(), "Default ANSI mode should be ON at startup");
term.append("ANSI mode is \x1b[4mON\x1b[0m\n");
term.set_ansi(false);
assert!(!term.ansi());
term.append("ANSI mode is \x1b[4mOFF\x1b[0m\n");
// append() method is already being used/tested. Test the u8, ascii, and utf8 variants
term.append_u8(b"Appending u8 array\n");
term.append_ascii("Appending ASCII array ↑ (up-arrow is dropped)\n");
// Test show_unknown() as incidental part of testing append methods
term.set_show_unknown(true);
assert!(term.show_unknown());
term.append_ascii(
"Appending ASCII array with show_unknown() ↑ (up-arrow is three unknown bytes)\n",
);
term.set_show_unknown(false);
assert!(!term.show_unknown());
term.append_utf8("Appending UTF8 array ↑ (up-arrow is visible)\n");
term.append_utf8_u8(b"Appending UTF8 array as u8 \xe2\x86\x91 (up-arrow is visible)\n");
// term.append(format!("Box type {:?}\n", term.Box())); // todo: box doesn't work
let r = term.cursor_row();
assert_eq!(term.cursor_col(), 0);
term.append(&format!("Testing cursor row/col {r}"));
assert_eq!(term.cursor_col(), 24);
assert_eq!(term.cursor_row(), r);
// Test cursor color methods
assert_eq!(
term.cursor_bg_color(),
Color::XtermGreen,
"Default cursor bg at startup"
);
assert_eq!(
term.cursor_fg_color(),
Color::from_hex(0xfffff0),
"Default cursor fg at startup"
);
term.set_cursor_bg_color(Color::Red);
assert_eq!(term.cursor_bg_color(), Color::Red);
assert_eq!(term.cursor_fg_color(), Color::from_hex(0xfffff0));
term.set_cursor_fg_color(Color::Blue);
assert_eq!(term.cursor_bg_color(), Color::Red);
assert_eq!(term.cursor_fg_color(), Color::Blue);
term.set_cursor_bg_color(Color::XtermGreen); // Restore the defaults
term.set_cursor_fg_color(Color::from_hex(0xfffff0));
assert_eq!(term.cursor_bg_color(), Color::XtermGreen);
assert_eq!(term.cursor_fg_color(), Color::from_hex(0xfffff0));
// The default display_rows() will derive from the window size
let dr = term.display_rows();
assert!(dr > 20, "Default display_rows at startup");
term.set_display_rows(60);
assert_eq!(term.display_rows(), 60);
term.set_display_rows(dr); // Set back to default
assert_eq!(term.display_rows(), dr);
// The default display_columns() will derive from the window size
let dc = term.display_columns();
assert!(dc > 80, "Default display_rows at startup");
term.set_display_columns(200);
assert_eq!(term.display_columns(), 200);
term.append("\n 1 2 3 4 5 6 7 8 9");
term.append("\n123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890");
term.append("[This text should be truncated by display_columns() call below.]\n"); // We shouldn't see this on screen
term.set_display_columns(90);
assert_eq!(term.display_columns(), 90);
term.set_display_columns(dc); // Set back to default
assert_eq!(term.display_columns(), dc);
let hl = term.history_lines();
assert_eq!(hl, 100, "Default history_lines at startup");
term.set_history_lines(60);
assert_eq!(term.history_lines(), 60);
term.set_history_lines(hl); // Set back to default
assert_eq!(term.history_lines(), hl);
// Is history_rows() an alias for history_lines()?
assert_eq!(term.history_rows(), 100, "Default history_rows at startup");
term.set_history_rows(50);
assert_eq!(term.history_rows(), 50);
term.set_history_lines(100); // Set back to default
assert_eq!(term.history_lines(), 100);
let hu = term.history_use();
term.append(&format!(
"history_use = {hu} (it's not clear what this means)\n"
));
// assert_eq!(term.history_use(), hu+1);
term.append(&format!(
"margins = b:{} l:{} r:{} t{}\n",
term.margin_bottom(),
term.margin_left(),
term.margin_right(),
term.margin_top()
));
assert_eq!(term.margin_bottom(), 3);
assert_eq!(term.margin_left(), 3);
assert_eq!(term.margin_right(), 3);
assert_eq!(term.margin_top(), 3);
term.set_margin_bottom(5);
term.set_margin_left(10);
term.set_margin_right(15);
term.set_margin_top(20);
assert_eq!(term.margin_bottom(), 5);
assert_eq!(term.margin_left(), 10);
assert_eq!(term.margin_right(), 15);
assert_eq!(term.margin_top(), 20);
term.append("Single character: '");
term.print_char('X');
term.append("', single UTF-8 character: '");
term.print_char_utf8('↑');
term.append("'\n");
let rr = term.redraw_rate();
assert_eq!(rr, 0.1, "Default redraw rate at startup");
term.append(&format!("Redraw rate {rr}\n"));
term.set_redraw_rate(1.0);
assert_eq!(term.redraw_rate(), 1.0);
term.set_redraw_rate(rr);
assert_eq!(term.redraw_rate(), rr);
let rs = term.redraw_style();
term.append(&format!("Redraw style {rs:?}\n"));
assert_eq!(
rs,
RedrawStyle::RateLimited,
"Default redraw style at startup"
);
term.set_redraw_style(RedrawStyle::NoRedraw);
assert_eq!(term.redraw_style(), RedrawStyle::NoRedraw);
term.set_redraw_style(rs);
assert_eq!(term.redraw_style(), rs);
term.append(&format!(
"Scrollbar actual size {}\n",
term.scrollbar_actual_size()
));
assert_eq!(term.scrollbar_actual_size(), 16);
term.append(&format!("Scrollbar size {}\n", term.scrollbar_size()));
assert_eq!(
term.scrollbar_size(),
0,
"Default scrollbar size at startup"
);
term.set_scrollbar_size(40);
assert_eq!(term.scrollbar_size(), 40);
assert_eq!(term.scrollbar_actual_size(), 40);
term.append(&format!(
"Scrollbar actual size {}\n",
term.scrollbar_actual_size()
));
term.set_scrollbar_size(0); // Restore default
assert_eq!(term.scrollbar_size(), 0);
assert_eq!(term.scrollbar_actual_size(), 16);
let sfc = term.selection_fg_color();
let sbc = term.selection_bg_color();
assert_eq!(sfc, Color::Black);
assert_eq!(sbc, Color::White);
term.append(&format!("Selection colors: {sfc} {sbc}\n"));
term.set_selection_fg_color(Color::Green);
term.set_selection_bg_color(Color::DarkBlue);
assert_eq!(term.selection_fg_color(), Color::Green);
assert_eq!(term.selection_bg_color(), Color::DarkBlue);
term.set_selection_fg_color(sfc);
term.set_selection_bg_color(sbc);
assert_eq!(term.selection_fg_color(), Color::Black);
assert_eq!(term.selection_bg_color(), Color::White);
let tfcd = term.text_fg_color_default();
let tbcd = term.text_bg_color_default();
assert_eq!(tfcd, Color::XtermWhite);
assert_eq!(tbcd, Color::TransparentBg);
term.append(&format!("Default text colors: {sfc} {sbc}\n"));
term.set_text_fg_color_default(Color::Green);
term.set_text_bg_color_default(Color::DarkBlue);
assert_eq!(term.text_fg_color_default(), Color::Green);
assert_eq!(term.text_bg_color_default(), Color::DarkBlue);
term.set_text_fg_color_default(tfcd);
term.set_text_bg_color_default(tbcd);
assert_eq!(term.text_fg_color_default(), Color::XtermWhite);
assert_eq!(term.text_bg_color_default(), Color::TransparentBg);
let tfc = term.text_fg_color();
let tbc = term.text_bg_color();
assert_eq!(tfc, Color::XtermWhite);
assert_eq!(tbc, Color::TransparentBg);
term.append(&format!("Text colors: {sfc} {sbc}\n"));
term.set_text_fg_color(Color::Green);
term.set_text_bg_color(Color::DarkBlue);
assert_eq!(term.text_fg_color(), Color::Green);
assert_eq!(term.text_bg_color(), Color::DarkBlue);
term.set_text_fg_color(tfc);
term.set_text_bg_color(tbc);
assert_eq!(term.text_fg_color(), Color::XtermWhite);
assert_eq!(term.text_bg_color(), Color::TransparentBg);
let tf = term.text_font();
term.append(&format!("Text font: {tf:?}\n"));
assert_eq!(tf, Font::Courier);
term.set_text_font(Font::Screen);
assert_eq!(term.text_font(), Font::Screen);
term.set_text_font(tf);
assert_eq!(term.text_font(), Font::Courier);
let ts = term.text_size();
term.append(&format!("Text size: {ts}\n"));
assert_eq!(ts, 14);
term.set_text_size(30);
assert_eq!(term.text_size(), 30);
term.set_text_size(ts);
assert_eq!(term.text_size(), ts);
// Keyboard handler
term.handle({
let mut term = term.clone();
move |_kc, e| {
match e {
fltk::enums::Event::KeyDown
if fltk::app::event_key() == fltk::enums::Key::Escape =>
{
// let FLTK handle ESC
false
}
fltk::enums::Event::KeyDown
if fltk::app::event_length() == 1 && !fltk::app::is_event_alt() =>
{
// We handle normal printable keystroke
let k = fltk::app::event_text();
term.take_focus().unwrap();
term.append(&k);
true
}
// fltk docs say that keyboard handler should always claim Focus and Unfocus events
fltk::enums::Event::Focus => true,
fltk::enums::Event::Unfocus => true,
_ => false, // Let FLTK handle everything else
}
}
});
term.set_text_attrib(Attrib::Inverse | Attrib::Italic);
term.append("\nStartup tests complete. Keyboard is live.\n");
term.set_text_attrib(Attrib::Normal);
term.redraw();
}
});
app.run().unwrap();
}