/// Just a scratchpad

/// From sequencer:

    //pub fn footer (
        //buf:    &mut Buffer,
        //area:   Rect,
        //note0:  usize,
        //note:   usize,
        //time0:  usize,
        //time:   usize,
        //time_z: usize,
    //) {
        //let Rect { mut x, y, width, height } = area;
        //buf.set_string(x, y + height, format!("├{}┤", "-".repeat((width - 2).into())),
            //Style::default().dim());
        //buf.set_string(x, y + height + 2, format!("├{}┤", "-".repeat((width - 2).into())),
            //Style::default().dim());
        //x = x + 2;
        //{
            //for (_, [letter, title, value]) in [
                //["S", &format!("ync"),  &format!("<4/4>")],
                //["Q", &format!("uant"), &format!("<1/{}>", 4 * time_z)],
                //["N", &format!("ote"),  &format!("{} ({}-{})", note0 + note, note0, "X")],
                //["T", &format!("ime"),  &format!("{} ({}-{})", time0 + time, time0 + 1, "X")],
            //].iter().enumerate() {
                //buf.set_string(x, y + height + 1, letter, Style::default().bold().yellow().dim());
                //x = x + 1;
                //buf.set_string(x, y + height + 1, &title, Style::default().bold().dim());
                //x = x + title.len() as u16 + 1;
                //buf.set_string(x, y + height + 1, &value, Style::default().not_dim());
                //x = x + value.len() as u16;
                //buf.set_string(x, y + height + 1, "  ", Style::default().dim());
                //x = x + 2;
            //}
        //}
    //}

//mod vertical {
    //use super::*;

    //pub fn draw (
        //s: &Sequencer,
        //buf: &mut Buffer,
        //mut area: Rect,
    //) -> Usually<Rect> {
        //area.x = area.x + 13;
        //keys(s, buf, area, 0);
        //steps(s, buf, area, 0);
        //playhead(s, buf, area.x, area.y);
        //Ok(area)
    //}

    //pub fn steps (s: &Sequencer, buf: &mut Buffer, area: Rect, beat: usize) {
        //if s.sequence.is_none() {
            //return
        //}
        //let ppq = s.timebase.ppq() as usize;
        //let bg = Style::default();
        //let bw = bg.dim();
        //let wh = bg.white();
        //let Rect { x, y, .. } = area;
        //for step in s.time_start..s.time_start+area.height as usize {
            //let y = y - (s.time_start + step / 2) as u16;
            //let step = step as usize;
            ////buf.set_string(x + 5, y, &" ".repeat(32.max(note1-s.note_start)as usize), bg);
            //if step % s.time_zoom == 0 {
                //buf.set_string(x + 2, y, &format!("{:2} ", step + 1), Style::default());
            //}
            //for k in s.note_start..s.note_start+area.width as usize {
                //let key = ::midly::num::u7::from_int_lossy(k as u8);
                //if step % 2 == 0 {
                    //let (a, b, c) = (
                        //(step + 0) as usize * ppq / s.time_zoom as usize,
                        //(step + 1) as usize * ppq / s.time_zoom as usize,
                        //(step + 2) as usize * ppq / s.time_zoom as usize,
                    //);
                    //let phrase = &s.phrases[s.sequence.unwrap()];
                    //let (character, style) = match (
                        //phrase.contains_note_on(key, a, b),
                        //phrase.contains_note_on(key, b, c),
                    //) {
                        //(true, true)   => ("█", wh),
                        //(true, false)  => ("▀", wh),
                        //(false, true)  => ("▄", wh),
                        //(false, false) => ("·", bw),
                    //};
                    //character.blit(buf, x + (5 + k - s.note_start) as u16, y, Some(style));
                //}
            //}
            //if beat == step as usize {
                //buf.set_string(x + 4, y, if beat % 2 == 0 { "▀" } else { "▄" }, Style::default().yellow());
                //for key in s.note_start..s.note_start+area.width as usize {
                    //let _color = if s.notes_on[key as usize] {
                        //Style::default().red()
                    //} else {
                        //KEY_STYLE[key as usize % 12]
                    //};
                //}
            //}
        //}
    //}

    //pub fn playhead (s: &Sequencer, buf: &mut Buffer, x: u16, y: u16) {
        //let x = x + 5 + s.note_cursor as u16;
        //let y = y + s.time_cursor as u16 / 2;
        //let c = if s.time_cursor % 2 == 0 { "▀" } else { "▄" };
        //buf.set_string(x, y, c, Style::default());
    //}

//pub const KEY_WHITE: Style = Style {
    //fg: Some(Color::Gray),
    //bg: None,
    //underline_color: None,
    //add_modifier: ::ratatui::style::Modifier::empty(),
    //sub_modifier: ::ratatui::style::Modifier::empty(),
//};

//pub const KEY_BLACK: Style = Style {
    //fg: Some(Color::Black),
    //bg: None,
    //underline_color: None,
    //add_modifier: ::ratatui::style::Modifier::empty(),
    //sub_modifier: ::ratatui::style::Modifier::empty(),
//};

//pub const KEY_STYLE: [Style;12] = [
    //KEY_WHITE, KEY_BLACK, KEY_WHITE, KEY_BLACK, KEY_WHITE,
    //KEY_WHITE, KEY_BLACK, KEY_WHITE, KEY_BLACK, KEY_WHITE, KEY_BLACK, KEY_WHITE,
//];

    //pub fn keys (s: &Sequencer, buf: &mut Buffer, area: Rect, beat: usize) {
        //let ppq = s.timebase.ppq() as usize;
        //let Rect { x, y, .. } = area;
        //for key in s.note_start..s.note_start+area.width as usize {
            //let x = x + (5 + key - s.note_start) as u16;
            //if key % 12 == 0 {
                //let octave = format!("C{}", (key / 12) as i8 - 4);
                //buf.set_string(x, y, &octave, Style::default());
            //}
            //let mut color = KEY_STYLE[key as usize % 12];
            //let mut is_on = s.notes_on[key as usize];
            //let step = beat;
            //let (a, b, c) = (
                //(step + 0) as usize * ppq / s.time_zoom as usize,
                //(step + 1) as usize * ppq / s.time_zoom as usize,
                //(step + 2) as usize * ppq / s.time_zoom as usize,
            //);
            //let key = ::midly::num::u7::from(key as u8);
            //let phrase = &s.phrases[s.sequence.unwrap()];
            //is_on = is_on || phrase.contains_note_on(key, a, b);
            //is_on = is_on || phrase.contains_note_on(key, b, c);
            //if is_on {
                //color = Style::default().red();
            //}
            //buf.set_string(x, y - 1, &format!("▄"), color);
        //}
    //}

////pub fn render (s: &Sequencer, buf: &mut Buffer, area: Rect) -> Usually<Rect> {
    ////let Rect { x, y, width, height } = area;
    ////let header = draw_header(s, buf, area)?;
    ////let piano  = match s.view {
        ////SequencerMode::Tiny     => Rect { x, y, width, height: 0 },
        ////SequencerMode::Compact  => Rect { x, y, width, height: 0 },
        ////SequencerMode::Vertical => self::vertical::draw(s, buf, Rect {
            ////x, y: y + header.height, width, height,
        ////})?,
        ////SequencerMode::Horizontal => self::horizontal::draw(
            ////buf,
            ////Rect { x, y: y + header.height, width, height, },
            ////s.phrase(),
            ////s.timebase.ppq() as usize,
            ////s.time_cursor,
            ////s.time_start,
            ////s.time_zoom,
            ////s.note_cursor,
            ////s.note_start,
            ////None
        ////)?,
    ////};
    ////Ok(draw_box(buf, Rect {
        ////x, y,
        ////width:  header.width.max(piano.width),
        ////height: header.height + piano.height
    ////}))
////}

////pub fn draw_header (s: &Sequencer, buf: &mut Buffer, area: Rect) -> Usually<Rect> {
    ////let Rect { x, y, width, .. } = area;
    ////let style = Style::default().gray();
    ////crate::view::TransportView {
        ////timebase: &s.timebase,
        ////playing:  s.playing,
        ////record:   s.recording,
        ////overdub:  s.overdub,
        ////monitor:  s.monitoring,
        ////frame:    0
    ////}.render(buf, area)?;
    ////let separator = format!("├{}┤", "-".repeat((width - 2).into()));
    ////separator.blit(buf, x, y + 2, Some(style.dim()));
    ////let _ = draw_clips(s, buf, area)?;
    ////Ok(Rect { x, y, width, height: 3 })
////}

////pub fn draw_clips (s: &Sequencer, buf: &mut Buffer, area: Rect) -> Usually<Rect> {
    ////let Rect { x, y, .. } = area;
    ////let style = Style::default().gray();
    ////for (i, sequence) in s.phrases.iter().enumerate() {
        ////let label = format!("▶ {}", &sequence.name);
        ////label.blit(buf, x + 2, y + 3 + (i as u16)*2, Some(if Some(i) == s.sequence {
            ////match s.playing {
                ////TransportState::Rolling => style.white().bold(),
                ////_ => style.not_dim().bold()
            ////}
        ////} else {
            ////style.dim()
        ////}));
    ////}
    ////Ok(Rect { x, y, width: 14, height: 14 })
////}
//}

/// From arranger:

//use crate::core::*;
//use crate::view::*;
//use crate::model::*;

//pub fn render (state: &Mixer, buf: &mut Buffer, mut area: Rect)
    //-> Usually<Rect>
//{
    //if area.height < 2 {
        //return Ok(area)
    //}
    //area.x = area.width.saturating_sub(80) / 2;
    //area.width  = area.width.min(80);
    //area.height = state.tracks.len() as u16 + 2;
    //draw_box(buf, area);
    //let x = area.x + 1;
    //let y = area.y + 1;
    //let _h = area.height - 2;
    //for (i, track) in state.tracks.iter().enumerate() {
        ////buf.set_string(
            ////x, y + index as u16,
            ////&track.name, Style::default().bold().not_dim()
        ////);
        //for (j, (column, field)) in [
            //(0,  format!(" {:10} ",    track.name)),
            //(12, format!(" {:.1}dB ", track.gain)),
            //(22, format!(" [ ] ")),
            //(30, format!("  C  ")),
            //(35, format!(" {:.1}dB ", track.level)),
            //(45, format!(" [ ] ")),
            //(51, format!(" {:7} ",    track.route)),
        //].into_iter().enumerate() {
            //buf.set_string(
                //x + column as u16,
                //y + i as u16,
                //field,
                //if state.selected_track == i && state.selected_column == j {
                    //Style::default().white().bold().not_dim()
                //} else {
                    //Style::default().not_dim()
                //}
            //);
            ////stdout.queue(move_to(column, row))?;
            ////if state.selected_track == i && state.selected_column == j {
                ////stdout.queue(PrintStyledContent(field.to_string().bold().reverse()))?;
            ////} else {
                ////stdout.queue(PrintStyledContent(field.to_string().bold()))?;
            ////}
            ////fn render_meters (
                ////state:  &mut Mixer,
                ////stdout: &mut Stdout,
                ////offset: Rect
            ////) -> Result<(), Box<dyn Error>> {
                ////let move_to = |col, row| crossterm::cursor::MoveTo(offset.0 + col, offset.1 + row);
                ////for (i, track) in state.tracks.iter().enumerate() {
                    ////let row = (i + 1) as u16;
                    ////stdout
                        ////.queue(move_to(10, row))?.queue(PrintStyledContent("▁".green()))?
                        ////.queue(move_to(20, row))?.queue(PrintStyledContent("▁".green()))?
                        ////.queue(move_to(28, row))?.queue(PrintStyledContent("▁".green()))?
                        ////.queue(move_to(43, row))?.queue(PrintStyledContent("▁".green()))?;
                ////}
                ////Ok(())
            ////}
        //}
    //}
    //Ok(area)
//}


/// From transport:

        // Record button/indicator
        //&|buf: &mut Buffer, Rect { x, y, .. }: Rect|{
            //"⏺ REC".blit(buf, x, y, Some(if self.record { red } else { dim }))
        //},

        //// Overdub button/indicator
        //&|buf: &mut Buffer, Rect { x, y, .. }: Rect|{
            //"⏺ DUB".blit(buf, x, y, Some(if self.overdub { yellow } else { dim }))
        //},

        //// Monitor button/indicator
        //&|buf: &mut Buffer, Rect { x, y, .. }: Rect|{
            //"⏺ MON".blit(buf, x, y, Some(if self.monitor { green } else { dim }))
        //},
        //

// From sampler:
//fn render_table (
    //self:  &mut Sampler,
    //stdout: &mut Stdout,
    //offset: (u16, u16),
//) -> Result<(), Box<dyn Error>> {
    //let move_to = |col, row| crossterm::cursor::MoveTo(offset.0 + col, offset.1 + row);
    //stdout.queue(move_to(0, 3))?.queue(
        //Print(" Name     Rate     Trigger      Route")
    //)?;
    //for (i, sample) in self.samples.lock().unwrap().iter().enumerate() {
        //let row = 4 + i as u16;
        //for (j, (column, field)) in [
            //(0,  format!(" {:7} ",    sample.name)),
            //(9,  format!(" {:.1}Hz ", sample.rate)),
            //(18, format!(" MIDI C{} {} ", sample.trigger.0, sample.trigger.1)),
            //(33, format!(" {:.1}dB -> Output ", sample.gain)),
            //(50, format!(" {} ", sample.playing.unwrap_or(0))),
        //].into_iter().enumerate() {
            //stdout.queue(move_to(column, row))?;
            //if self.selected_sample == i && self.selected_column == j {
                //stdout.queue(PrintStyledContent(field.to_string().bold().reverse()))?;
            //} else {
                //stdout.queue(PrintStyledContent(field.to_string().bold()))?;
            //}
        //}
    //}
    //Ok(())
//}

//fn render_meters (
    //self:  &mut Sampler,
    //stdout: &mut Stdout,
    //offset: (u16, u16),
//) -> Result<(), Box<dyn Error>> {
    //let move_to = |col, row| crossterm::cursor::MoveTo(offset.0 + col, offset.1 + row);
    //for (i, sample) in self.samples.lock().iter().enumerate() {
        //let row = 4 + i as u16;
        //stdout.queue(move_to(32, row))?.queue(
            //PrintStyledContent("▁".green())
        //)?;
    //}
    //Ok(())
//}