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Cleaner colors example

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This commit is contained in:
Alexandre Bury 2017-06-14 00:43:03 -07:00
parent 7a7ccbf45c
commit 9089d9fd88
2 changed files with 32 additions and 17 deletions
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47
examples/colors.rs
View File

@ -1,6 +1,6 @@
extern crate cursive;
use cursive::Cursive;
use cursive::{Cursive, Printer};
use cursive::theme::{ColorStyle, Color};
use cursive::view::Boxable;
use cursive::views::Canvas;
@ -8,23 +8,38 @@ use cursive::views::Canvas;
fn main() {
let mut siv = Cursive::new();
siv.add_layer(Canvas::new(())
.with_draw(|printer, _| for x in 0..20 {
for y in 0..10 {
printer.with_color(ColorStyle::Custom {
front: Color::Rgb(x * 12,
y * 25,
(x + 2 * y) * 6),
back: Color::Rgb(255 - x * 12,
255 - y * 25,
128 + (40 - x - 2 * y) * 3),
},
|printer| { printer.print((x, y), "+"); });
}
})
.fixed_size((20, 10)));
siv.add_layer(Canvas::new(()).with_draw(draw).fixed_size((20, 10)));
siv.add_global_callback('q', |s| s.quit());
siv.run();
}
fn front_color(x: u8, y: u8, x_max: u8, y_max: u8) -> Color {
Color::Rgb(x * (255 / x_max),
y * (255 / y_max),
(x + 2 * y) * (255 / (x_max + 2 * y_max)))
}
fn back_color(x: u8, y: u8, x_max: u8, y_max: u8) -> Color {
Color::Rgb(128 + (2 * y_max + x - 2 * y) * (128 / (x_max + 2 * y_max)),
255 - y * (255 / y_max),
255 - x * (255 / x_max))
}
fn draw(p: &Printer, _: &()) {
let x_max = p.size.x as u8;
let y_max = p.size.y as u8;
for x in 0..x_max {
for y in 0..y_max {
let style = ColorStyle::Custom {
front: front_color(x, y, x_max, y_max),
back: back_color(x, y, x_max, y_max),
};
p.with_color(style, |printer| { printer.print((x, y), "+"); });
}
}
}

2
src/backend/blt.rs
View File

@ -241,7 +241,7 @@ fn blt_keycode_to_char(kc: KeyCode, shift: bool) -> char {
KeyCode::Num9 => '9',
KeyCode::Num0 => '0',
_ => {
println_stderr!("{:?}", kc);
println_stderr!("Found unknown input: {:?}", kc);
unreachable!()
}
}