added scrolling to widgets
This commit is contained in:
parent
3a5d8e929d
commit
dafd1493fe
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@ -248,8 +248,7 @@ dependencies = [
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[[package]]
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name = "termion"
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version = "2.0.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "659c1f379f3408c7e5e84c7d0da6d93404e3800b6b9d063ba24436419302ec90"
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source = "git+https://sectorinf.com/emilis/termion#ce611b828393cf1bad1667089af9b41a7d99a768"
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dependencies = [
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"libc",
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"numtoa",
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@ -7,8 +7,11 @@ edition = "2021"
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[dependencies]
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anyhow = "1.0.68"
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termion = "2.0.1"
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# termion = "2.0.1"
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[dependencies.serde]
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version = "1"
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features = ["std", "derive"]
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[dependencies.termion]
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git = "https://sectorinf.com/emilis/termion"
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@ -85,21 +85,16 @@ impl PartialEq for Component {
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}
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}
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#[derive(Debug, Clone)]
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pub struct Line {
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color: ColorSet,
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components: Vec<Component>,
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}
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#[derive(Debug, Clone, Eq)]
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pub struct Widget {
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want_width: u8,
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width_pct: u8,
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per_line: Vec<Token>,
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scroll_offset: Option<usize>,
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}
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impl PartialEq for Widget {
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fn eq(&self, other: &Self) -> bool {
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self.want_width == other.want_width
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self.width_pct == other.width_pct
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&& self.per_line.len() == other.per_line.len()
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&& (&self.per_line)
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.into_iter()
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@ -111,13 +106,64 @@ impl PartialEq for Widget {
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impl Widget {
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pub fn new(width_pct: u8, tokens_per_line: Vec<Token>) -> Self {
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Self {
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want_width: width_pct,
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width_pct,
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per_line: tokens_per_line,
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scroll_offset: None,
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}
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}
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fn get_line(&self, line: usize) -> Option<&Token> {
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self.per_line.get(line)
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pub fn scrolling(
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width_pct: u8,
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tokens_per_line: Vec<Token>,
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) -> Self {
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Self {
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width_pct,
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per_line: tokens_per_line,
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scroll_offset: Some(0),
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}
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}
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fn scroll_up(mut self) -> Self {
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self.scroll_offset = self.scroll_offset.map(|offset| {
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if offset == 0 {
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0
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} else {
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offset - 1
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}
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});
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self
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}
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fn scroll_down(mut self) -> Self {
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// FIXME: since we don't know what the screen size is
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// when this is rendered, the scroll can become "stuck"
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// for a bit by scrolling further than the screen can allow.
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// In this case, perhaps doing a scroll-check would be useful?
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// Or, since the scroll should result in re-rendering, maybe
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// the renderer should call a check on the widgets with
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// the height at the time of the render? An extra roll
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// through the list, woo! But tbh, I should probably look at
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// optimizing later, not now.
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self.scroll_offset = self
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.scroll_offset
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.map(|offset| self.per_line.len().min(offset + 1));
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self
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}
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fn get_line(&self, line: usize, height: usize) -> Option<&Token> {
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let len = self.per_line.len();
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if self.scroll_offset.is_none() || len < height {
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return self.per_line.get(line);
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}
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let offset = len
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- height
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- (len - height).min(self.scroll_offset.unwrap_or(0));
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self.per_line.get(offset + line)
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}
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fn abs_width(&self, line_width: usize) -> usize {
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line_width
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.min((self.width_pct as usize * line_width) / 100 + 1)
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}
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}
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@ -172,17 +218,21 @@ impl Instruction {
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return vec![];
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}
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match self {
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Instruction::FixedHeight(next, lines, wdg) => (0..lines)
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// Widget has to be taken mutably cause I can't think
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// of a simpler way to "fix" the scrolling offset
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// at the point of rendering when it's scrolled past
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// what fits on screen.
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Instruction::FixedHeight(next, lines, mut wdg) => (0
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..lines)
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.map(|line| {
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let mut offset = 0;
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(&wdg)
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(&mut wdg)
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.into_iter()
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.map(|w| {
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let (width, token) = (
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(w.want_width as usize * line_width)
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/ 100
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+ 1, // Feels wrong?
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w.get_line(line).map(|t| t.clone()),
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w.abs_width(line_width),
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w.get_line(line, lines)
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.map(|t| t.clone()),
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);
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let mut result = match token {
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Some(tok) => tok
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@ -248,13 +298,12 @@ impl Plan {
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}
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fn fit_check(widgets: &Vec<Widget>) {
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if widgets
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let sum = widgets
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.into_iter()
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.map(|wd| wd.want_width as usize)
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.sum::<usize>()
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> 100
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{
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panic!("widgets do not fit screen")
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.map(|wd| wd.abs_width(100))
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.sum::<usize>();
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if sum > 100 {
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panic!("widgets do not fit screen: {}/100", sum)
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}
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}
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@ -321,6 +370,49 @@ impl Plan {
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Self::Fill(Box::new(self), widgets)
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}
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pub fn scroll_up(self) -> Self {
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match self {
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Plan::FixedHeight(next, height, widgets) => {
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Plan::FixedHeight(
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Box::new(next.scroll_up()),
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height,
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widgets
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.into_iter()
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.map(|w| w.scroll_up())
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.collect(),
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)
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}
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Plan::Fill(next, widgets) => Plan::Fill(
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Box::new(next.scroll_up()),
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widgets.into_iter().map(|w| w.scroll_up()).collect(),
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),
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Plan::End => Plan::End,
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}
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}
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pub fn scroll_down(self) -> Self {
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match self {
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Plan::FixedHeight(next, height, widgets) => {
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Plan::FixedHeight(
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Box::new(next.scroll_down()),
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height,
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widgets
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.into_iter()
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.map(|w| w.scroll_down())
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.collect(),
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)
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}
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Plan::Fill(next, widgets) => Plan::Fill(
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Box::new(next.scroll_down()),
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widgets
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.into_iter()
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.map(|w| w.scroll_down())
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.collect(),
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),
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Plan::End => Plan::End,
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}
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}
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pub fn make(
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self,
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base_colors: ColorSet,
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@ -364,6 +456,18 @@ mod tests {
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bg: Color::BLACK,
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};
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let (w1, w2, w3) = test_widgets();
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let scrolling_widget = Widget::scrolling(
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100,
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(0..100)
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.into_iter()
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.map(|num| Token::text(format!("line {}", num)))
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.collect(),
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);
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let scrolled_by_3 = scrolling_widget
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.clone()
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.scroll_up()
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.scroll_up()
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.scroll_up();
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vec![
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(
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"all the widgets, 30 lines",
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@ -372,7 +476,7 @@ mod tests {
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vec![w1.clone(), w2.clone(), w3.clone()],
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),
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w1.clone()
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.get_line(0)
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.get_line(0, 30)
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.unwrap()
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.clone()
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.with_width(WIDTH / 3)
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@ -384,7 +488,7 @@ mod tests {
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])
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.chain(
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w2.clone()
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.get_line(0)
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.get_line(0, 30)
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.unwrap()
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.clone()
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.with_width(WIDTH / 3),
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@ -396,7 +500,7 @@ mod tests {
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])
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.chain(
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w3.clone()
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.get_line(0)
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.get_line(0, 30)
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.unwrap()
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.clone()
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.with_width(WIDTH / 3),
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@ -433,7 +537,7 @@ mod tests {
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"Single widget, single 10 lines section",
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Instruction::start().fixed(10, vec![w1.clone()]),
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w1.clone()
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.get_line(0)
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.get_line(0, 10)
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.unwrap()
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.clone()
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.with_width(WIDTH / 3)
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@ -456,6 +560,53 @@ mod tests {
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)
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.collect(),
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),
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(
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"Scrollable widget: no scrolling",
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Instruction::start()
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.fixed(10, vec![scrolling_widget]),
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(0..10)
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.into_iter()
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.map(|num| {
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vec![
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Component::String(format!(
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"line {}",
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num
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)),
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Component::Fg(BASE_COLOR.fg),
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Component::Bg(BASE_COLOR.bg),
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Component::NextLine,
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]
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})
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.flatten()
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.chain(
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(0..(HEIGHT - 10))
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.map(|_| Component::NextLine),
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)
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.collect(),
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),
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(
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"Scrollable widget: scrolled by 3",
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Instruction::start().fixed(10, vec![scrolled_by_3]),
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(0..10)
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.into_iter()
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.map(|num| {
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vec![
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Component::String(format!(
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"line {}",
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num + 3,
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)),
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Component::Fg(BASE_COLOR.fg),
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Component::Bg(BASE_COLOR.bg),
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Component::NextLine,
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]
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})
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.flatten()
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.chain(
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(0..(HEIGHT - 10))
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.map(|_| Component::NextLine),
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)
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.collect(),
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),
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]
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.into_iter()
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.for_each(|(name, instruction, expected)| {
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@ -466,24 +617,22 @@ mod tests {
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.into_iter()
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.zip(expected.clone())
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.enumerate()
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// .filter(|(i, (left, right))| left != right)
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.map(|(i, (act, exp))| {
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format!(
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"{}{}: {} || {}",
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"{: <3}{: <3}: [exp|act] {: <25}|{}\n",
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if act != exp { "## " } else { "" },
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i,
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exp.debug(),
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act.debug(),
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)
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.replace('\n', " ")
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})
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.collect::<Vec<String>>();
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.collect::<String>();
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assert!(
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expected == actual,
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"<{}>:
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expected({})
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actual({})
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diff:\n{:#?}",
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diff:\n{}",
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name,
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expected.len(),
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actual.len(),
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@ -1,17 +1,16 @@
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use component::{Component, LineArea, Plan, Widget};
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use std::{
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io::{Stdout, Write},
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time::Duration,
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time::{Duration, Instant},
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};
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use termion::{
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clear, cursor,
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event::{Key, MouseButton, MouseEvent},
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input::{MouseTerminal, TermRead},
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raw::{IntoRawMode, RawTerminal},
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screen::{AlternateScreen, IntoAlternateScreen},
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AsyncReader,
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};
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use theme::{Color, ColorSet};
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use token::Token;
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use view::Event;
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type Result<T> = std::result::Result<T, anyhow::Error>;
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@ -23,71 +22,44 @@ pub mod theme;
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pub mod token;
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pub mod view;
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pub async fn run<V>(view: V) -> Result<()>
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where
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V: View,
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{
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let mut view = view;
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let mut screen: Screen = MouseTerminal::from(
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std::io::stdout().into_alternate_screen()?.into_raw_mode()?,
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);
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let mut events_iter = termion::async_stdin().events();
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let mut plans = view.init()?;
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let (term_w, term_h) = termion::terminal_size()?;
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let mut layers = make_layers(
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plans,
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ColorSet {
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fg: Color::WHITE,
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bg: Color::BLACK,
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},
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(term_w as usize, term_h as usize),
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);
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render_layers(&layers, &mut screen)?;
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screen.flush()?;
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loop {
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let event = match events_iter.next() {
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Some(e) => e,
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None => {
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std::thread::sleep(Duration::from_millis(50));
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continue;
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}
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}?;
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let event = match event {
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termion::event::Event::Mouse(mus) => match mus {
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termion::event::MouseEvent::Press(_, x, y) => {
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// TODO: scrolling later
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match match_click(&layers, (x, y)) {
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Some(yay) => Event::Link(yay),
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None => continue,
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}
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}
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_ => Event::Input(event),
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},
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_ => Event::Input(event),
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};
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plans = view.update(event)?;
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let (term_w, term_h) = termion::terminal_size()?;
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layers = make_layers(
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plans,
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ColorSet {
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fg: Color::WHITE,
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bg: Color::BLACK,
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},
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(term_w as usize, term_h as usize),
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);
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write!(screen, "{}", clear::All)?;
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render_layers(&layers, &mut screen)?;
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screen.flush()?;
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}
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struct PlanState {
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plans: Vec<Plan>,
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layers: Vec<Layer>,
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last_term_size: (u16, u16),
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base_colorset: ColorSet,
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last_render: Option<Instant>,
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}
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fn match_click(
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layers: &Vec<Layer>,
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click: (u16, u16),
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) -> Option<String> {
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for layer in layers.into_iter().rev() {
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impl PlanState {
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fn new(
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plans: PlanLayers,
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base_colorset: ColorSet,
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(term_w, term_h): (u16, u16),
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last_render: Option<Instant>,
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) -> Self {
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let layers = plans
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.clone()
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.into_iter()
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.map(|plan| {
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Layer::make(
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plan,
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base_colorset,
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(term_w as usize, term_h as usize),
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)
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})
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.collect();
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Self {
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plans,
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layers,
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base_colorset,
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last_render,
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last_term_size: (term_w, term_h),
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}
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}
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fn match_click(&self, click: (u16, u16)) -> Option<String> {
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for layer in (&self.layers).into_iter().rev() {
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let (_, h) = termion::terminal_size().unwrap();
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for link in &layer.links {
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if link.1.matches(click) {
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return Some(link.0.clone());
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|
|
@ -95,24 +67,72 @@ fn match_click(
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}
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}
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None
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}
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}
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fn make_layers(
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fn from_plans(
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plans: PlanLayers,
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base_colorset: ColorSet,
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term_dimensions: (usize, usize),
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) -> Vec<Layer> {
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plans
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.into_iter()
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.map(|plan| Layer::make(plan, base_colorset, term_dimensions))
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.collect()
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}
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) -> Result<Self> {
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Ok(Self::new(
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plans,
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base_colorset,
|
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termion::terminal_size()?,
|
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None,
|
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))
|
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}
|
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|
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fn render_layers(
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layered: &Vec<Layer>,
|
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scr: &mut Screen,
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) -> Result<()> {
|
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for layer in layered.into_iter().map(|layer| {
|
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fn resized(self) -> Result<Self> {
|
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let term_size = termion::terminal_size()?;
|
||||
if term_size == self.last_term_size {
|
||||
return Ok(self);
|
||||
}
|
||||
Ok(Self::new(
|
||||
self.plans,
|
||||
self.base_colorset,
|
||||
term_size,
|
||||
self.last_render,
|
||||
))
|
||||
}
|
||||
|
||||
fn scroll_up(self) -> Result<Self> {
|
||||
Ok(Self::new(
|
||||
self.plans
|
||||
.into_iter()
|
||||
.map(|layer| layer.scroll_up())
|
||||
.collect(),
|
||||
self.base_colorset,
|
||||
termion::terminal_size()?,
|
||||
self.last_render,
|
||||
))
|
||||
}
|
||||
|
||||
fn scroll_down(self) -> Result<Self> {
|
||||
Ok(Self::new(
|
||||
self.plans
|
||||
.into_iter()
|
||||
.map(|layer| layer.scroll_down())
|
||||
.collect(),
|
||||
self.base_colorset,
|
||||
termion::terminal_size()?,
|
||||
self.last_render,
|
||||
))
|
||||
}
|
||||
|
||||
fn render(&mut self, scr: &mut Screen) -> Result<()> {
|
||||
const RENDER_COOLDOWN: u128 = 1000 / 50;
|
||||
if let Some(last) = self.last_render {
|
||||
if last.elapsed().as_millis() < RENDER_COOLDOWN {
|
||||
return Ok(());
|
||||
}
|
||||
}
|
||||
write!(
|
||||
scr,
|
||||
"{color}{clear}{goto}",
|
||||
color = self.base_colorset.to_string(),
|
||||
clear = clear::All,
|
||||
goto = cursor::Goto(1, 1)
|
||||
)?;
|
||||
for layer in (&self.layers).into_iter().map(|layer| {
|
||||
let mut line = 1;
|
||||
(&layer.components)
|
||||
.into_iter()
|
||||
|
|
@ -135,6 +155,106 @@ fn render_layers(
|
|||
}) {
|
||||
write!(scr, "{}", layer)?;
|
||||
}
|
||||
scr.flush()?;
|
||||
self.last_render = Some(Instant::now());
|
||||
Ok(())
|
||||
}
|
||||
}
|
||||
|
||||
pub async fn run<V>(view: V) -> Result<()>
|
||||
where
|
||||
V: View,
|
||||
{
|
||||
let base_colorset = ColorSet {
|
||||
fg: Color::WHITE,
|
||||
bg: Color::BLACK,
|
||||
};
|
||||
let mut view = view;
|
||||
let mut last_ctrlc: Option<Instant> = None;
|
||||
let mut screen: Screen = MouseTerminal::from(
|
||||
std::io::stdout().into_alternate_screen()?.into_raw_mode()?,
|
||||
);
|
||||
let mut events_iter = termion::async_stdin().events();
|
||||
let mut plans =
|
||||
PlanState::from_plans(view.init()?, base_colorset)?;
|
||||
plans.render(&mut screen)?;
|
||||
let mut skip_resize = false;
|
||||
loop {
|
||||
let event = match events_iter.next() {
|
||||
Some(e) => e,
|
||||
None => {
|
||||
std::thread::sleep(Duration::from_millis(1));
|
||||
continue;
|
||||
}
|
||||
}?;
|
||||
// if let termion::event::Event::Mouse(m) = &event {
|
||||
// match m {
|
||||
// MouseEvent::Press(btn, x, y) => {
|
||||
// eprintln!("got {:#?} at {} {}", btn, x, y);
|
||||
// }
|
||||
// _ => {}
|
||||
// }
|
||||
// } else {
|
||||
// eprintln!("got event {:#?}", &event);
|
||||
// }
|
||||
|
||||
let event = match event {
|
||||
termion::event::Event::Mouse(mus) => match mus {
|
||||
MouseEvent::Press(press, x, y) => match press {
|
||||
MouseButton::WheelUp => {
|
||||
plans = plans.scroll_up()?;
|
||||
skip_resize = true;
|
||||
None
|
||||
}
|
||||
MouseButton::WheelDown => {
|
||||
plans = plans.scroll_down()?;
|
||||
skip_resize = true;
|
||||
None
|
||||
}
|
||||
_ => match plans.match_click((x, y)) {
|
||||
Some(name) => Some(Event::Link(name)),
|
||||
None => {
|
||||
skip_resize = true;
|
||||
None
|
||||
}
|
||||
},
|
||||
},
|
||||
// Not doing release/whatever mouse events rn
|
||||
_ => None,
|
||||
},
|
||||
termion::event::Event::Key(key) => {
|
||||
if let Key::Ctrl(c) = key {
|
||||
if c == 'c' {
|
||||
match last_ctrlc {
|
||||
Some(last) => {
|
||||
if last.elapsed().as_millis() < 300 {
|
||||
break;
|
||||
}
|
||||
}
|
||||
None => {}
|
||||
};
|
||||
last_ctrlc = Some(Instant::now());
|
||||
continue;
|
||||
}
|
||||
Some(Event::Input(event))
|
||||
} else {
|
||||
Some(Event::Input(event))
|
||||
}
|
||||
}
|
||||
_ => Some(Event::Input(event)),
|
||||
};
|
||||
|
||||
if let Some(event) = event {
|
||||
let (_, update) = view.update(event)?;
|
||||
if let Some(layers) = update {
|
||||
plans = PlanState::from_plans(layers, base_colorset)?;
|
||||
}
|
||||
} else if !skip_resize {
|
||||
plans = plans.resized()?;
|
||||
}
|
||||
plans.render(&mut screen)?;
|
||||
skip_resize = false;
|
||||
}
|
||||
Ok(())
|
||||
}
|
||||
|
||||
|
|
@ -190,11 +310,16 @@ impl Layer {
|
|||
pub type PlanLayers = Vec<Plan>;
|
||||
|
||||
pub trait View {
|
||||
type Message;
|
||||
|
||||
fn init(
|
||||
&mut self,
|
||||
) -> std::result::Result<PlanLayers, anyhow::Error>;
|
||||
fn update(
|
||||
&mut self,
|
||||
event: Event,
|
||||
) -> std::result::Result<PlanLayers, anyhow::Error>;
|
||||
) -> std::result::Result<
|
||||
(Self::Message, Option<PlanLayers>),
|
||||
anyhow::Error,
|
||||
>;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -66,10 +66,31 @@ impl Token {
|
|||
}
|
||||
}
|
||||
|
||||
// Checks if any children are Token::Centered
|
||||
// Used for links so they do not get set incorrectly
|
||||
fn has_centered(&self) -> bool {
|
||||
match self {
|
||||
Token::Centered(_) => true,
|
||||
Token::Limited(next, _) => next.has_centered(),
|
||||
Token::CharPad(next, _, _) => next.has_centered(),
|
||||
Token::Fg(next, _) => next.has_centered(),
|
||||
Token::Bg(next, _) => next.has_centered(),
|
||||
Token::Link(next, _) => next.has_centered(),
|
||||
Token::String(next, _) => next.has_centered(),
|
||||
Token::End => false,
|
||||
}
|
||||
}
|
||||
|
||||
pub fn link<S>(self, name: S) -> Self
|
||||
where
|
||||
S: Into<String>,
|
||||
{
|
||||
#[cfg(debug_assertions)]
|
||||
{
|
||||
if self.has_centered() {
|
||||
panic!("FIXME: Token::link called after centered");
|
||||
}
|
||||
}
|
||||
Self::Link(Box::new(self), name.into())
|
||||
}
|
||||
|
||||
|
|
@ -252,11 +273,11 @@ mod tests {
|
|||
(
|
||||
"contains a link",
|
||||
Token::text("learn more")
|
||||
.centered()
|
||||
.link("string_link"),
|
||||
.link("string_link")
|
||||
.centered(),
|
||||
vec![
|
||||
Component::Link("string_link".into(), 10),
|
||||
Component::X((WIDTH - 10) / 2),
|
||||
Component::Link("string_link".into(), 10),
|
||||
Component::String("learn more".into()),
|
||||
],
|
||||
),
|
||||
|
|
|
|||
|
|
@ -1,8 +1,4 @@
|
|||
use crate::{
|
||||
component::{Component, LineArea, Plan},
|
||||
theme::ColorSet,
|
||||
};
|
||||
|
||||
#[derive(Clone, Debug)]
|
||||
pub enum Event {
|
||||
Link(String),
|
||||
Input(termion::event::Event),
|
||||
|
|
|
|||
|
|
@ -33,26 +33,33 @@ impl Default for App {
|
|||
],
|
||||
)],
|
||||
),
|
||||
Plan::start().fill(vec![]).fixed(
|
||||
4,
|
||||
vec![Widget::new(
|
||||
Plan::start()
|
||||
.fixed(4, vec![])
|
||||
.fill(vec![Widget::scrolling(
|
||||
100,
|
||||
vec![
|
||||
Token::End,
|
||||
Token::text(
|
||||
"you did it! now undo it u fuck",
|
||||
)
|
||||
.bg(Color::RED)
|
||||
.link("click"),
|
||||
],
|
||||
)],
|
||||
),
|
||||
(1..=100)
|
||||
.into_iter()
|
||||
.map(|num| {
|
||||
Token::text(format!(
|
||||
"this is {}",
|
||||
num
|
||||
))
|
||||
.padded(30)
|
||||
.bg("#330033".try_into().unwrap())
|
||||
.link(format!("num{}", num))
|
||||
.centered()
|
||||
})
|
||||
.collect(),
|
||||
)])
|
||||
.fixed(4, vec![]),
|
||||
],
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl View for App {
|
||||
type Message = ();
|
||||
|
||||
fn init(
|
||||
&mut self,
|
||||
) -> std::result::Result<kkdisp::PlanLayers, anyhow::Error> {
|
||||
|
|
@ -62,17 +69,17 @@ impl View for App {
|
|||
fn update(
|
||||
&mut self,
|
||||
event: Event,
|
||||
) -> std::result::Result<kkdisp::PlanLayers, anyhow::Error> {
|
||||
) -> std::result::Result<
|
||||
(Self::Message, Option<kkdisp::PlanLayers>),
|
||||
anyhow::Error,
|
||||
> {
|
||||
match event {
|
||||
Event::Link(lnk) => {
|
||||
if lnk == "click" {
|
||||
eprintln!("recieved link: {}", lnk);
|
||||
self.index ^= 1;
|
||||
Ok(vec![self.states[self.index].clone()])
|
||||
} else {
|
||||
panic!("bad link");
|
||||
Ok(((), Some(vec![self.states[self.index].clone()])))
|
||||
}
|
||||
}
|
||||
_ => Ok(vec![self.states[self.index].clone()]),
|
||||
_ => Ok(((), None)),
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue