wip: refactor pt.6, fixed tek_api

crates/tek_tui/src/tui_pool.rs

@@ -0,0 +1,232 @@
+use crate::*;
+
+pub struct PhrasePoolView<E: Engine> {
+    _engine:     PhantomData<E>,
+    state:       PhrasePool,
+    /// Scroll offset
+    pub scroll:  usize,
+    /// Mode switch
+    pub mode:    Option<PhrasePoolMode>,
+    /// Whether this widget is focused
+    pub focused: bool,
+    /// Whether this widget is entered
+    pub entered: bool,
+}
+
+/// Modes for phrase pool
+pub enum PhrasePoolMode {
+    /// Renaming a pattern
+    Rename(usize, String),
+    /// Editing the length of a pattern
+    Length(usize, usize, PhraseLengthFocus),
+}
+
+/// Displays and edits phrase length.
+pub struct PhraseLength<E: Engine> {
+    _engine: PhantomData<E>,
+    /// Pulses per beat (quaver)
+    pub ppq:    usize,
+    /// Beats per bar
+    pub bpb:    usize,
+    /// Length of phrase in pulses
+    pub pulses: usize,
+    /// Selected subdivision
+    pub focus:  Option<PhraseLengthFocus>,
+}
+
+impl<E: Engine> PhraseLength<E> {
+    pub fn new (pulses: usize, focus: Option<PhraseLengthFocus>) -> Self {
+        Self { _engine: Default::default(), ppq: PPQ, bpb: 4, pulses, focus }
+    }
+    pub fn bars  (&self) -> usize { self.pulses / (self.bpb * self.ppq) }
+    pub fn beats (&self) -> usize { (self.pulses % (self.bpb * self.ppq)) / self.ppq }
+    pub fn ticks (&self) -> usize { self.pulses % self.ppq }
+    pub fn bars_string  (&self) -> String { format!("{}", self.bars()) }
+    pub fn beats_string (&self) -> String { format!("{}", self.beats()) }
+    pub fn ticks_string (&self) -> String { format!("{:>02}", self.ticks()) }
+}
+
+/// Focused field of `PhraseLength`
+#[derive(Copy, Clone)] pub enum PhraseLengthFocus {
+    /// Editing the number of bars
+    Bar,
+    /// Editing the number of beats
+    Beat,
+    /// Editing the number of ticks
+    Tick,
+}
+
+impl PhraseLengthFocus {
+    pub fn next (&mut self) {
+        *self = match self {
+            Self::Bar  => Self::Beat,
+            Self::Beat => Self::Tick,
+            Self::Tick => Self::Bar,
+        }
+    }
+    pub fn prev (&mut self) {
+        *self = match self {
+            Self::Bar  => Self::Tick,
+            Self::Beat => Self::Bar,
+            Self::Tick => Self::Beat,
+        }
+    }
+}
+
+impl<E: Engine> PhrasePool<E> {
+    pub fn new () -> Self {
+        Self {
+            _engine: Default::default(),
+            scroll:  0,
+            phrase:  0,
+            phrases: vec![Arc::new(RwLock::new(Phrase::default()))],
+            mode:    None,
+            focused: false,
+            entered: false,
+        }
+    }
+    pub fn len (&self) -> usize { self.phrases.len() }
+    pub fn phrase (&self) -> &Arc<RwLock<Phrase>> { &self.phrases[self.phrase] }
+    pub fn select_prev (&mut self) { self.phrase = self.index_before(self.phrase) }
+    pub fn select_next (&mut self) { self.phrase = self.index_after(self.phrase) }
+    pub fn index_before (&self, index: usize) -> usize {
+        index.overflowing_sub(1).0.min(self.len() - 1)
+    }
+    pub fn index_after (&self, index: usize) -> usize {
+        (index + 1) % self.len()
+    }
+    pub fn index_of (&self, phrase: &Phrase) -> Option<usize> {
+        for i in 0..self.phrases.len() {
+            if *self.phrases[i].read().unwrap() == *phrase { return Some(i) }
+        }
+        return None
+    }
+    fn new_phrase (name: Option<&str>, color: Option<ItemColorTriplet>) -> Arc<RwLock<Phrase>> {
+        Arc::new(RwLock::new(Phrase::new(
+            String::from(name.unwrap_or("(new)")), true, 4 * PPQ, None, color
+        )))
+    }
+    pub fn delete_selected (&mut self) {
+        if self.phrase > 0 {
+            self.phrases.remove(self.phrase);
+            self.phrase = self.phrase.min(self.phrases.len().saturating_sub(1));
+        }
+    }
+    pub fn append_new (&mut self, name: Option<&str>, color: Option<ItemColorTriplet>) {
+        self.phrases.push(Self::new_phrase(name, color));
+        self.phrase = self.phrases.len() - 1;
+    }
+    pub fn insert_new (&mut self, name: Option<&str>, color: Option<ItemColorTriplet>) {
+        self.phrases.insert(self.phrase + 1, Self::new_phrase(name, color));
+        self.phrase += 1;
+    }
+    pub fn insert_dup (&mut self) {
+        let mut phrase = self.phrases[self.phrase].read().unwrap().duplicate();
+        phrase.color = ItemColorTriplet::random_near(phrase.color, 0.25);
+        self.phrases.insert(self.phrase + 1, Arc::new(RwLock::new(phrase)));
+        self.phrase += 1;
+    }
+    pub fn randomize_color (&mut self) {
+        let mut phrase = self.phrases[self.phrase].write().unwrap();
+        phrase.color = ItemColorTriplet::random();
+    }
+    pub fn begin_rename (&mut self) {
+        self.mode = Some(PhrasePoolMode::Rename(
+            self.phrase,
+            self.phrases[self.phrase].read().unwrap().name.clone()
+        ));
+    }
+    pub fn begin_length (&mut self) {
+        self.mode = Some(PhrasePoolMode::Length(
+            self.phrase,
+            self.phrases[self.phrase].read().unwrap().length,
+            PhraseLengthFocus::Bar
+        ));
+    }
+    pub fn move_up (&mut self) {
+        if self.phrase > 1 {
+            self.phrases.swap(self.phrase - 1, self.phrase);
+            self.phrase -= 1;
+        }
+    }
+    pub fn move_down (&mut self) {
+        if self.phrase < self.phrases.len().saturating_sub(1) {
+            self.phrases.swap(self.phrase + 1, self.phrase);
+            self.phrase += 1;
+        }
+    }
+}
+
+// TODO: Display phrases always in order of appearance
+impl Content for PhrasePool<Tui> {
+    type Engine = Tui;
+    fn content (&self) -> impl Widget<Engine = Tui> {
+        let Self { focused, phrases, mode, .. } = self;
+        let content = col!(
+            (i, phrase) in phrases.iter().enumerate() => Layers::new(|add|{
+                let Phrase { ref name, color, length, .. } = *phrase.read().unwrap();
+                let mut length = PhraseLength::new(length, None);
+                if let Some(PhrasePoolMode::Length(phrase, new_length, focus)) = mode {
+                    if *focused && i == *phrase {
+                        length.pulses = *new_length;
+                        length.focus  = Some(*focus);
+                    }
+                }
+                let length   = length.align_e().fill_x();
+                let row1     = lay!(format!(" {i}").align_w().fill_x(), length).fill_x();
+                let mut row2 = format!(" {name}");
+                if let Some(PhrasePoolMode::Rename(phrase, _)) = mode {
+                    if *focused && i == *phrase { row2 = format!("{row2}▄"); }
+                };
+                let row2 = TuiStyle::bold(row2, true);
+                add(&col!(row1, row2).fill_x().bg(color.base.rgb))?;
+                Ok(if *focused && i == self.phrase { add(&CORNERS)?; })
+            })
+        );
+        let border_color = if *focused {Color::Rgb(100, 110, 40)} else {Color::Rgb(70, 80, 50)};
+        let border       = Lozenge(Style::default().bg(Color::Rgb(40, 50, 30)).fg(border_color));
+        let content      = content.fill_xy().bg(Color::Rgb(28, 35, 25)).border(border);
+        let title_color  = if *focused {Color::Rgb(150, 160, 90)} else {Color::Rgb(120, 130, 100)};
+        let upper_left   = format!("[{}] Phrases", if self.entered {"■"} else {" "});
+        let upper_right  = format!("({})", phrases.len());
+        lay!(
+            content,
+            TuiStyle::fg(upper_left.to_string(),  title_color).push_x(1).align_nw().fill_xy(),
+            TuiStyle::fg(upper_right.to_string(), title_color).pull_x(1).align_ne().fill_xy(),
+        )
+    }
+}
+
+impl Content for PhraseLength<Tui> {
+    type Engine = Tui;
+    fn content (&self) -> impl Widget<Engine = Tui> {
+        Layers::new(move|add|{
+            match self.focus {
+                None => add(&row!(
+                    " ", self.bars_string(),
+                    ".", self.beats_string(),
+                    ".", self.ticks_string(),
+                    " "
+                )),
+                Some(PhraseLengthFocus::Bar) => add(&row!(
+                    "[", self.bars_string(),
+                    "]", self.beats_string(),
+                    ".", self.ticks_string(),
+                    " "
+                )),
+                Some(PhraseLengthFocus::Beat) => add(&row!(
+                    " ", self.bars_string(),
+                    "[", self.beats_string(),
+                    "]", self.ticks_string(),
+                    " "
+                )),
+                Some(PhraseLengthFocus::Tick) => add(&row!(
+                    " ", self.bars_string(),
+                    ".", self.beats_string(),
+                    "[", self.ticks_string(),
+                    "]"
+                )),
+            }
+        })
+    }
+}