mirror of
https://github.com/FliegendeWurst/cursive.git
synced 2024-11-08 18:30:40 +00:00
Refactor colors management
Do not register pairs with backend. Let backend cache color pairs if needed.
This commit is contained in:
parent
9e1a83f7cc
commit
5c42a59954
@ -20,9 +20,9 @@ fn main() {
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theme.shadow = !theme.shadow;
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theme.borders = match theme.borders {
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Some(BorderStyle::Simple) => Some(BorderStyle::Outset),
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Some(BorderStyle::Outset) => None,
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None => Some(BorderStyle::Simple),
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BorderStyle::Simple => BorderStyle::Outset,
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BorderStyle::Outset => BorderStyle::None,
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BorderStyle::None => BorderStyle::Simple,
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};
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s.set_theme(theme);
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@ -26,9 +26,10 @@ impl backend::Backend for Concrete {
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fn init_color_style(&mut self, style: ColorStyle, foreground: &Color,
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background: &Color) {
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self.colours.insert(style.id(),
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(colour_to_blt_colour(foreground),
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colour_to_blt_colour(background)));
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self.colours
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.insert(style.id(),
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(colour_to_blt_colour(foreground),
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colour_to_blt_colour(background)));
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}
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fn with_color<F: FnOnce()>(&self, color: ColorStyle, f: F) {
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@ -1,15 +1,54 @@
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extern crate ncurses;
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use self::super::{color_id, find_closest};
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use backend;
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use event::{Event, Key};
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use std::cell::Cell;
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use theme::{Color, ColorStyle, Effect};
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use std::cell::{RefCell, Cell};
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use std::collections::HashMap;
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use theme::{ColorPair, ColorStyle, Effect};
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use utf8;
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pub struct Concrete {
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current_style: Cell<ColorStyle>,
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current_style: Cell<ColorPair>,
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pairs: RefCell<HashMap<ColorPair, i16>>,
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}
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impl Concrete {
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fn insert_color(&self, pairs: &mut HashMap<ColorPair, i16>, pair: ColorPair) -> i16 {
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let n = 1 + pairs.len() as i16;
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let target = if ncurses::COLOR_PAIRS() > n as i32 {
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// We still have plenty of space for everyone.
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n
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} else {
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// The world is too small for both of us.
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let target = n - 1;
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// Remove the mapping to n-1
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pairs.retain(|_, &mut v| v != target);
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target
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};
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pairs.insert(pair, target);
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ncurses::init_pair(target,
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find_closest(&pair.front) as i16,
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find_closest(&pair.back) as i16);
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target
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}
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fn set_colorstyle(&self, pair: ColorPair) {
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self.current_style.set(pair);
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let mut pairs = self.pairs.borrow_mut();
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// Find if we have this color in stock
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let i = if pairs.contains_key(&pair) {
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// We got it!
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pairs[&pair]
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} else {
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self.insert_color(&mut *pairs, pair)
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};
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let style = ncurses::COLOR_PAIR(i);
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ncurses::attron(style);
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}
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}
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impl backend::Backend for Concrete {
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@ -28,7 +67,10 @@ impl backend::Backend for Concrete {
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ncurses::wbkgd(ncurses::stdscr(),
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ncurses::COLOR_PAIR(color_id(ColorStyle::Background)));
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Concrete { current_style: Cell::new(ColorStyle::Background) }
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Concrete {
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current_style: Cell::new(ColorPair::from_256colors(0, 0)),
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pairs: RefCell::new(HashMap::new()),
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}
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}
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fn screen_size(&self) -> (usize, usize) {
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@ -47,21 +89,12 @@ impl backend::Backend for Concrete {
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}
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fn init_color_style(&mut self, style: ColorStyle, foreground: &Color,
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background: &Color) {
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ncurses::init_pair(color_id(style),
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find_closest(foreground) as i16,
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find_closest(background) as i16);
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}
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fn with_color<F: FnOnce()>(&self, color: ColorStyle, f: F) {
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fn with_color<F: FnOnce()>(&self, colors: ColorPair, f: F) {
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let current = self.current_style.get();
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self.current_style.set(color);
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set_colorstyle(color);
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self.set_colorstyle(colors);
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f();
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set_colorstyle(current);
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self.set_colorstyle(current);
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self.current_style.set(current);
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}
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@ -109,21 +142,6 @@ impl backend::Backend for Concrete {
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}
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}
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fn set_colorstyle(style: ColorStyle) {
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if let ColorStyle::Custom {
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ref front,
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ref back,
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} = style {
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println_stderr!("Redifining...");
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ncurses::init_pair(color_id(style),
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find_closest(front) as i16,
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find_closest(back) as i16);
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}
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let style = ncurses::COLOR_PAIR(color_id(style));
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ncurses::attron(style);
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}
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/// Returns the Key enum corresponding to the given ncurses event.
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fn parse_ncurses_char(ch: i32) -> Event {
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match ch {
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@ -21,7 +21,8 @@ impl backend::Backend for Concrete {
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pancurses::cbreak();
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pancurses::start_color();
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pancurses::curs_set(0);
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window.bkgd(pancurses::ColorPair(color_id(ColorStyle::Background) as u8));
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window.bkgd(pancurses::ColorPair(color_id(ColorStyle::Background) as
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u8));
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Concrete { window: window }
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}
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@ -52,7 +53,8 @@ impl backend::Backend for Concrete {
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self.window.attron(color_attribute);
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f();
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self.window.attron(pancurses::ColorPair(current_color_pair as u8));
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self.window
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.attron(pancurses::ColorPair(current_color_pair as u8));
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}
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fn with_effect<F: FnOnce()>(&self, effect: Effect, f: F) {
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@ -94,12 +96,14 @@ impl backend::Backend for Concrete {
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pancurses::Input::Character(c) if 32 <= (c as u32) &&
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(c as u32) <= 255 => {
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Event::Char(utf8::read_char(c as u8, || {
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self.window.getch().and_then(|i| match i {
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pancurses::Input::Character(c) => {
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Some(c as u8)
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}
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_ => None,
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})
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self.window
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.getch()
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.and_then(|i| match i {
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pancurses::Input::Character(c) => {
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Some(c as u8)
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}
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_ => None,
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})
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})
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.unwrap())
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}
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@ -25,9 +25,6 @@ pub trait Backend {
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fn has_colors(&self) -> bool;
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fn init_color_style(&mut self, style: theme::ColorStyle,
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foreground: &theme::Color, background: &theme::Color);
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fn print_at(&self, (usize, usize), &str);
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fn poll_event(&self) -> event::Event;
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@ -35,6 +32,6 @@ pub trait Backend {
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fn screen_size(&self) -> (usize, usize);
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// TODO: unify those into a single method?
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fn with_color<F: FnOnce()>(&self, color: theme::ColorStyle, f: F);
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fn with_color<F: FnOnce()>(&self, colors: theme::ColorPair, f: F);
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fn with_effect<F: FnOnce()>(&self, effect: theme::Effect, f: F);
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}
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@ -23,7 +23,8 @@ use theme;
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pub struct Concrete {
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terminal: AlternateScreen<termion::raw::RawTerminal<::std::io::Stdout>>,
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current_style: Cell<theme::ColorStyle>,
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colors: HashMap<theme::ColorStyle, (Box<tcolor::Color>, Box<tcolor::Color>)>,
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colors:
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HashMap<theme::ColorStyle, (Box<tcolor::Color>, Box<tcolor::Color>)>,
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input: chan::Receiver<Event>,
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resize: chan::Receiver<chan_signal::Signal>,
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11
src/lib.rs
11
src/lib.rs
@ -169,10 +169,10 @@ new_default!(Cursive);
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impl Cursive {
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/// Creates a new Cursive root, and initialize the back-end.
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pub fn new() -> Self {
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let mut backend = backend::Concrete::init();
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let backend = backend::Concrete::init();
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let theme = theme::load_default();
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theme.activate(&mut backend);
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// theme.activate(&mut backend);
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// let theme = theme::load_theme("assets/style.toml").unwrap();
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let (tx, rx) = mpsc::channel();
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@ -286,7 +286,7 @@ impl Cursive {
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/// Sets the current theme.
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pub fn set_theme(&mut self, theme: theme::Theme) {
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self.theme = theme;
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self.theme.activate(&mut self.backend);
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// self.theme.activate(&mut self.backend);
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self.backend.clear();
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}
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@ -533,9 +533,6 @@ impl Cursive {
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}
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fn draw(&mut self) {
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// TODO: don't clone the theme
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// Reference it or something
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let sizes = self.screen().layer_sizes();
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if self.last_sizes != sizes {
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self.clear();
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@ -543,7 +540,7 @@ impl Cursive {
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}
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let printer = Printer::new(self.screen_size(),
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self.theme.clone(),
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&self.theme,
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&self.backend);
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// Draw the currently active screen
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@ -21,7 +21,7 @@ pub struct Printer<'a> {
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/// Whether the view to draw is currently focused or not.
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pub focused: bool,
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/// Currently used theme
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pub theme: Theme,
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pub theme: &'a Theme,
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/// `true` if nothing has been drawn yet.
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new: Rc<Cell<bool>>,
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@ -34,7 +34,7 @@ impl<'a> Printer<'a> {
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///
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/// But nobody needs to know that.
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#[doc(hidden)]
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pub fn new<T: Into<Vec2>>(size: T, theme: Theme,
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pub fn new<T: Into<Vec2>>(size: T, theme: &'a Theme,
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backend: &'a backend::Concrete)
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-> Self {
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Printer {
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@ -131,7 +131,7 @@ impl<'a> Printer<'a> {
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pub fn with_color<F>(&self, c: ColorStyle, f: F)
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where F: FnOnce(&Printer)
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{
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self.backend.with_color(c, || f(self));
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self.backend.with_color(c.resolve(self.theme), || f(self));
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}
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/// Same as `with_color`, but apply a ncurses style instead,
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@ -195,8 +195,8 @@ impl<'a> Printer<'a> {
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where F: FnOnce(&Printer)
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{
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let color = match self.theme.borders {
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None => return,
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Some(BorderStyle::Outset) if !invert => ColorStyle::Tertiary,
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BorderStyle::None => return,
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BorderStyle::Outset if !invert => ColorStyle::Tertiary,
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_ => ColorStyle::Primary,
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};
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@ -213,8 +213,8 @@ impl<'a> Printer<'a> {
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where F: FnOnce(&Printer)
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{
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let color = match self.theme.borders {
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None => return,
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Some(BorderStyle::Outset) if invert => ColorStyle::Tertiary,
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BorderStyle::None => return,
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BorderStyle::Outset if invert => ColorStyle::Tertiary,
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_ => ColorStyle::Primary,
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};
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@ -260,7 +260,7 @@ impl<'a> Printer<'a> {
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// We can't be larger than what remains
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size: Vec2::min(self.size - offset, size),
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focused: self.focused && focused,
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theme: self.theme.clone(),
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theme: self.theme,
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backend: self.backend,
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new: self.new.clone(),
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}
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145
src/theme.rs
145
src/theme.rs
@ -114,8 +114,6 @@
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//! highlight_inactive = "#5555FF"
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//! ```
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use backend::{self, Backend};
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use std::fs::File;
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use std::io;
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use std::io::Read;
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@ -133,6 +131,35 @@ pub enum Effect {
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// TODO: bold, italic, underline
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}
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/// Combines a front and back color.
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#[derive(Clone,Copy,Debug,PartialEq,Eq,Hash)]
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pub struct ColorPair {
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/// Color used for the foreground.
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pub front: Color,
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/// Color used for the background.
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pub back: Color,
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}
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impl ColorPair {
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/// Return an inverted color pair.
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///
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/// With swapped front abd back color.
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pub fn invert(&self) -> Self {
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ColorPair {
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front: self.back,
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back: self.front,
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}
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}
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/// Creates a new color pair from color IDs.
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pub fn from_256colors(front: u8, back: u8) -> Self {
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Self {
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front: Color::from_256colors(front),
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back: Color::from_256colors(back),
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}
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}
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}
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/// Possible color style for a cell.
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///
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/// Represents a color pair role to use when printing something.
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@ -163,17 +190,39 @@ pub enum ColorStyle {
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/// Foreground color
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front: Color,
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/// Background color
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back: Color
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back: Color,
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},
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}
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impl ColorStyle {
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/// Return the color pair that this style represents.
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///
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/// Returns `(front, back)`.
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pub fn resolve(&self, theme: &Theme) -> ColorPair {
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let c = &theme.colors;
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let (front, back) = match *self {
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ColorStyle::Background => (c.view, c.background),
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ColorStyle::Shadow => (c.shadow, c.shadow),
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ColorStyle::Primary => (c.primary, c.view),
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ColorStyle::Secondary => (c.secondary, c.view),
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ColorStyle::Tertiary => (c.tertiary, c.view),
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ColorStyle::TitlePrimary => (c.title_primary, c.view),
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ColorStyle::TitleSecondary => (c.title_secondary, c.view),
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ColorStyle::Highlight => (c.view, c.highlight),
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ColorStyle::HighlightInactive => (c.view, c.highlight_inactive),
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ColorStyle::Custom { front, back } => (front, back),
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};
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ColorPair { front, back }
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}
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}
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/// Represents the style a Cursive application will use.
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#[derive(Clone,Debug)]
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pub struct Theme {
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/// Whether views in a StackView should have shadows.
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pub shadow: bool,
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/// How view borders should be drawn.
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pub borders: Option<BorderStyle>,
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pub borders: BorderStyle,
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/// What colors should be used through the application?
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pub colors: Palette,
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}
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@ -182,7 +231,7 @@ impl Default for Theme {
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fn default() -> Self {
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Theme {
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shadow: true,
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borders: Some(BorderStyle::Simple),
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borders: BorderStyle::Simple,
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colors: Palette {
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background: Color::Dark(BaseColor::Blue),
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shadow: Color::Dark(BaseColor::Black),
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@ -213,64 +262,29 @@ impl Theme {
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self.colors.load(table);
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}
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}
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/// Sets a theme as active.
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///
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/// **Don't use this directly.** Uses [`Cursive::set_theme`] instead.
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///
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/// [`Cursive::set_theme`]: ../struct.Cursive.html#method.set_theme
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pub fn activate(&self, backend: &mut backend::Concrete) {
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// Initialize each color with the backend
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backend.init_color_style(ColorStyle::Background,
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&self.colors.view,
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&self.colors.background);
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backend.init_color_style(ColorStyle::Shadow,
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&self.colors.shadow,
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&self.colors.shadow);
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backend.init_color_style(ColorStyle::Primary,
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&self.colors.primary,
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&self.colors.view);
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backend.init_color_style(ColorStyle::Secondary,
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&self.colors.secondary,
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&self.colors.view);
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backend.init_color_style(ColorStyle::Tertiary,
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&self.colors.tertiary,
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&self.colors.view);
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backend.init_color_style(ColorStyle::TitlePrimary,
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&self.colors.title_primary,
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&self.colors.view);
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backend.init_color_style(ColorStyle::TitleSecondary,
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&self.colors.title_secondary,
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&self.colors.view);
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backend.init_color_style(ColorStyle::Highlight,
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&self.colors.view,
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&self.colors.highlight);
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backend.init_color_style(ColorStyle::HighlightInactive,
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&self.colors.view,
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&self.colors.highlight_inactive);
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backend.clear();
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}
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}
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/// Specifies how some borders should be drawn.
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///
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/// Borders are used around Dialogs, select popups, and panels.
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#[derive(Clone,Copy,Debug)]
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#[derive(Clone,Copy,Debug,PartialEq,Eq,Hash)]
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pub enum BorderStyle {
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/// Simple borders.
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Simple,
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/// Outset borders with a simple 3d effect.
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Outset,
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/// No borders.
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None,
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}
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impl BorderStyle {
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fn from(s: &str) -> Option<Self> {
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fn from(s: &str) -> Self {
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if s == "simple" {
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Some(BorderStyle::Simple)
|
||||
BorderStyle::Simple
|
||||
} else if s == "outset" {
|
||||
Some(BorderStyle::Outset)
|
||||
BorderStyle::Outset
|
||||
} else {
|
||||
None
|
||||
BorderStyle::None
|
||||
}
|
||||
}
|
||||
}
|
||||
@ -378,6 +392,22 @@ pub enum BaseColor {
|
||||
White,
|
||||
}
|
||||
|
||||
impl From<u8> for BaseColor {
|
||||
fn from(n: u8) -> Self {
|
||||
match n % 8 {
|
||||
0 => BaseColor::Black,
|
||||
1 => BaseColor::Red,
|
||||
2 => BaseColor::Green,
|
||||
3 => BaseColor::Yellow,
|
||||
4 => BaseColor::Blue,
|
||||
5 => BaseColor::Magenta,
|
||||
6 => BaseColor::Cyan,
|
||||
7 => BaseColor::White,
|
||||
_ => unreachable!(),
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/// Represents a color used by the theme.
|
||||
#[derive(Clone,Copy,Debug,PartialEq,Eq,Hash)]
|
||||
pub enum Color {
|
||||
@ -417,6 +447,27 @@ impl From<toml::de::Error> for Error {
|
||||
}
|
||||
|
||||
impl Color {
|
||||
/// Creates a color from its ID in the 256 colors list.
|
||||
///
|
||||
/// * Colors 0-7 are base dark colors.
|
||||
/// * Colors 8-15 are base light colors.
|
||||
/// * Colors 16-255 are rgb colors with 6 values per channel.
|
||||
pub fn from_256colors(n: u8) -> Self {
|
||||
if n < 8 {
|
||||
Color::Dark(BaseColor::from(n))
|
||||
} else if n < 16 {
|
||||
Color::Light(BaseColor::from(n))
|
||||
} else {
|
||||
let n = n - 16;
|
||||
|
||||
let r = n / 36;
|
||||
let g = (n % 36) / 6;
|
||||
let b = n % 6;
|
||||
|
||||
Color::RgbLowRes(r, g, b)
|
||||
}
|
||||
}
|
||||
|
||||
fn parse(value: &str) -> Option<Self> {
|
||||
Some(match value {
|
||||
"black" => Color::Dark(BaseColor::Black),
|
||||
|
Loading…
Reference in New Issue
Block a user