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Cleaner colors example
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commit
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@ -1,6 +1,6 @@
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extern crate cursive;
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use cursive::Cursive;
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use cursive::{Cursive, Printer};
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use cursive::theme::{ColorStyle, Color};
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use cursive::view::Boxable;
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use cursive::views::Canvas;
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@ -8,23 +8,38 @@ use cursive::views::Canvas;
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fn main() {
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let mut siv = Cursive::new();
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siv.add_layer(Canvas::new(())
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.with_draw(|printer, _| for x in 0..20 {
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for y in 0..10 {
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printer.with_color(ColorStyle::Custom {
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front: Color::Rgb(x * 12,
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y * 25,
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(x + 2 * y) * 6),
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back: Color::Rgb(255 - x * 12,
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255 - y * 25,
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128 + (40 - x - 2 * y) * 3),
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},
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|printer| { printer.print((x, y), "+"); });
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}
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})
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.fixed_size((20, 10)));
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siv.add_layer(Canvas::new(()).with_draw(draw).fixed_size((20, 10)));
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siv.add_global_callback('q', |s| s.quit());
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siv.run();
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}
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fn front_color(x: u8, y: u8, x_max: u8, y_max: u8) -> Color {
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Color::Rgb(x * (255 / x_max),
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y * (255 / y_max),
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(x + 2 * y) * (255 / (x_max + 2 * y_max)))
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}
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fn back_color(x: u8, y: u8, x_max: u8, y_max: u8) -> Color {
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Color::Rgb(128 + (2 * y_max + x - 2 * y) * (128 / (x_max + 2 * y_max)),
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255 - y * (255 / y_max),
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255 - x * (255 / x_max))
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}
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fn draw(p: &Printer, _: &()) {
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let x_max = p.size.x as u8;
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let y_max = p.size.y as u8;
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for x in 0..x_max {
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for y in 0..y_max {
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let style = ColorStyle::Custom {
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front: front_color(x, y, x_max, y_max),
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back: back_color(x, y, x_max, y_max),
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};
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p.with_color(style, |printer| { printer.print((x, y), "+"); });
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}
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}
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}
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@ -241,7 +241,7 @@ fn blt_keycode_to_char(kc: KeyCode, shift: bool) -> char {
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KeyCode::Num9 => '9',
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KeyCode::Num0 => '0',
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_ => {
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println_stderr!("{:?}", kc);
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println_stderr!("Found unknown input: {:?}", kc);
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unreachable!()
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}
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}
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