wip: component playground; Align primitive

crates/tek_core/src/engine/component.rs

@@ -1,10 +1,10 @@
 use crate::*;
 
 /// A UI component.
-pub trait Component<E: Engine>: Render<E> + Handle<E> {}
+pub trait Component<E: Engine>: Render<E> + Handle<E> + Layout<E> {}
 
 /// Everything that implements [Render] and [Handle] is a [Component].
-impl<E: Engine, C: Render<E> + Handle<E>> Component<E> for C {}
+impl<E: Engine, C: Render<E> + Handle<E> + Layout<E>> Component<E> for C {}
 
 /// Marker trait for [Component]s that can [Exit]
 pub trait ExitableComponent<E>: Exit + Component<E> where E: Engine {

crates/tek_core/src/engine/layout.rs

@@ -2,19 +2,18 @@ use crate::*;
 
 // TODO: Convert to component
 // pub enum Align { Center, NW, N, NE, E, SE, S, SW, W, }
-pub fn center_box (area: Rect, w: u16, h: u16) -> Rect {
-    let width  = w.min(area.width * 3 / 5);
-    let height = h.min(area.width * 3 / 5);
-    let x = area.x + (area.width  - width)  / 2;
-    let y = area.y + (area.height - height) / 2;
-    Rect { x, y, width, height }
+pub fn center_box (area: [u16;4], w: u16, h: u16) -> [u16;4] {
+    let width  = w.min(area.w() * 3 / 5);
+    let height = h.min(area.w() * 3 / 5);
+    let x = area.x() + (area.w() - width)  / 2;
+    let y = area.y() + (area.h() - height) / 2;
+    [x, y, width, height]
 }
 
 /// Trait for structs that compute drawing area before rendering
 pub trait Layout<E: Engine>: Render<E> {
     fn layout (&self, area: E::Area) -> Perhaps<E::Area>;
 }
-
 impl<E: Engine, T: Layout<E>> Layout<E> for &T {
     fn layout (&self, area: E::Area) -> Perhaps<E::Area> {
         (*self).layout(area)
@@ -29,6 +28,8 @@ impl<E: Engine, T: Layout<E>> Layout<E> for Option<T> {
     }
 }
 
+/// Override X and Y coordinates, aligning to corner, side, or center of area
+pub enum Align<L> { Center(L), NW(L), N(L), NE(L), W(L), E(L), SW(L), S(L), SE(L) }
 /// Enforce minimum size of drawing area
 pub enum Min<U: Number, L> { W(U, L), H(U, L), WH(U, U, L), }
 /// Enforce maximum size of drawing area

crates/tek_core/src/lib.rs

@@ -15,7 +15,7 @@ pub(crate) use std::thread::{spawn, JoinHandle};
 pub(crate) use std::time::Duration;
 pub(crate) use atomic_float::*;
 use better_panic::{Settings, Verbosity};
-use std::ops::{Add, Sub};
+use std::ops::{Add, Sub, Div};
 use std::cmp::{Ord, Eq, PartialEq};
 use std::fmt::{Debug, Display};
 
@@ -48,6 +48,7 @@ pub type Perhaps<T> = Result<Option<T>, Box<dyn Error>>;
 pub trait Number: Send + Sync + Copy
     + Add<Self, Output=Self>
     + Sub<Self, Output=Self>
+    + Div<Self, Output=Self>
     + Ord + PartialEq + Eq
     + Debug + Display {}
 
@@ -55,6 +56,7 @@ impl<T> Number for T where
     T: Send + Sync + Copy
         + Add<Self, Output=Self>
         + Sub<Self, Output=Self>
+        + Div<Self, Output=Self>
         + Ord + PartialEq + Eq
         + Debug + Display
 {}

crates/tek_core/src/tui.rs

@@ -36,6 +36,7 @@ impl Engine for Tui {
         let better_panic_handler = Settings::auto().verbosity(Verbosity::Full).create_panic_handler();
         std::panic::set_hook(Box::new(move |info: &std::panic::PanicInfo|{
             stdout().execute(LeaveAlternateScreen).unwrap();
+            CrosstermBackend::new(stdout()).show_cursor().unwrap();
             disable_raw_mode().unwrap();
             better_panic_handler(info);
         }));

crates/tek_core/src/tui/tui_layout.rs

@@ -72,3 +72,56 @@ impl<'a> Split<'a, Tui> {
         }, areas))
     }
 }
+
+impl<L: Layout<Tui>> Layout<Tui> for Align<L> where Self: Render<Tui> {
+    fn layout (&self, outer_area: [u16;4]) -> Perhaps<[u16;4]> {
+        Ok(match self {
+            Self::Center(inner) => inner,
+            Self::NW(inner) => inner,
+            Self::N(inner)  => inner,
+            Self::NE(inner) => inner,
+            Self::W(inner)  => inner,
+            Self::E(inner)  => inner,
+            Self::SW(inner) => inner,
+            Self::S(inner)  => inner,
+            Self::SE(inner) => inner,
+        }
+            .layout(outer_area)?
+            .map(|inner_area|match self {
+                Self::Center(_) => {
+                    let [_, _, w, h] = inner_area.xywh();
+                    let offset_x = (outer_area.w() - w) / 2;
+                    let offset_y = (outer_area.h() - h) / 2;
+                    [outer_area.x() + offset_x, outer_area.y() + offset_y, w, h]
+                },
+                Self::NW(_) => { todo!() },
+                Self::N(_)  => { todo!() },
+                Self::NE(_) => { todo!() },
+                Self::W(_)  => { todo!() },
+                Self::E(_)  => { todo!() },
+                Self::SW(_) => { todo!() },
+                Self::S(_)  => { todo!() },
+                Self::SE(_) => { todo!() },
+            }))
+    }
+}
+
+impl<R: Render<Tui> + Layout<Tui>> Render<Tui> for Align<R> {
+    fn render (&self, to: &mut Tui) -> Perhaps<[u16;4]> {
+        self.layout(to.area())?
+            .map(|area|to.with_area(area.x(), area.y(), area.w(), area.h()))
+            .map(|to|match self {
+                Self::Center(inner) => inner,
+                Self::NW(inner) => inner,
+                Self::N(inner)  => inner,
+                Self::NE(inner) => inner,
+                Self::W(inner)  => inner,
+                Self::E(inner)  => inner,
+                Self::SW(inner) => inner,
+                Self::S(inner)  => inner,
+                Self::SE(inner) => inner,
+            }.render(to))
+            .transpose()
+            .map(|x|x.flatten())
+    }
+}

crates/tek_mixer/src/plugin.rs

@@ -211,3 +211,9 @@ pub const KEYMAP_PLUGIN: &'static [KeyBinding<Plugin>] = keymap!(Plugin {
         Ok(true)
     }],
 });
+
+impl Layout<Tui> for Plugin {
+    fn layout (&self, area: [u16;4]) -> Perhaps<[u16;4]> {
+        todo!()
+    }
+}

crates/tek_mixer/src/sample_add.rs

@@ -28,27 +28,27 @@ impl Render<Tui> for AddSampleModal {
         to.make_dim();
         let area = center_box(
             area,
-            64.max(area.width.saturating_sub(8)),
-            20.max(area.width.saturating_sub(8)),
+            64.max(area.w().saturating_sub(8)),
+            20.max(area.w().saturating_sub(8)),
         );
         to.fill_fg(area, Color::Reset);
         to.fill_bg(area, Nord::bg_lo(true, true));
         to.fill_char(area, ' ');
-        to.blit(&format!("{}", &self.dir.to_string_lossy()), area.x+2, area.y+1, Some(Style::default().bold()))?;
-        to.blit(&"Select sample:", area.x+2, area.y+2, Some(Style::default().bold()))?;
+        to.blit(&format!("{}", &self.dir.to_string_lossy()), area.x()+2, area.y()+1, Some(Style::default().bold()))?;
+        to.blit(&"Select sample:", area.x()+2, area.y()+2, Some(Style::default().bold()))?;
         for (i, (is_dir, name)) in self.subdirs.iter()
             .map(|path|(true, path))
             .chain(self.files.iter().map(|path|(false, path)))
             .enumerate()
             .skip(self.offset)
         {
-            if i >= area.height as usize - 4 {
+            if i >= area.h() as usize - 4 {
                 break
             }
             let t = if is_dir { "" } else { "" };
             let line = format!("{t} {}", name.to_string_lossy());
-            let line = &line[..line.len().min(area.width as usize - 4)];
-            to.blit(&line, area.x + 2, area.y + 3 + i as u16, Some(if i == self.cursor {
+            let line = &line[..line.len().min(area.w() as usize - 4)];
+            to.blit(&line, area.x() + 2, area.y() + 3 + i as u16, Some(if i == self.cursor {
                 Style::default().green()
             } else {
                 Style::default().white()

crates/tek_mixer/src/sampler.rs

@@ -143,3 +143,9 @@ impl Sampler {
         }
     }
 }
+
+impl Layout<Tui> for Sampler {
+    fn layout (&self, area: [u16;4]) -> Perhaps<[u16;4]> {
+        todo!()
+    }
+}

crates/tek_mixer/src/track_view.rs

@@ -1,6 +1,11 @@
 use crate::*;
 use tek_core::Direction;
 
+impl Layout<Tui> for Track<Tui> {
+    fn layout (&self, area: [u16;4]) -> Perhaps<[u16;4]> {
+        todo!()
+    }
+}
 impl Render<Tui> for Track<Tui> {
     fn render (&self, to: &mut Tui) -> Perhaps<[u16;4]> {
         TrackView {
@@ -32,30 +37,31 @@ pub struct TrackView<'a, E: Engine> {
 }
 impl<'a> Render<Tui> for TrackView<'a, Tui> {
     fn render (&self, to: &mut Tui) -> Perhaps<[u16;4]> {
-        let mut area = to.area();
-        if let Some(chain) = self.chain {
-            match self.direction {
-                Direction::Down  => area.width = area.width.min(40),
-                Direction::Right => area.width = area.width.min(10),
-                _ => { unimplemented!() },
-            }
-            to.fill_bg(to.area(), Nord::bg_lo(self.focused, self.entered));
-            let mut split = Split::new(self.direction);
-            for device in chain.devices.as_slice().iter() {
-                split = split.add_ref(device);
-            }
-            let (area, areas) = split.render_areas(to)?;
-            if self.focused && self.entered && areas.len() > 0 {
-                Corners(Style::default().green().not_dim()).draw(to.with_rect(areas[0]))?;
-            }
-            Ok(Some(area))
-        } else {
-            let [x, y, width, height] = area;
-            let label = "No chain selected";
-            let x = x + (width - label.len() as u16) / 2;
-            let y = y + height / 2;
-            to.blit(&label, x, y, Some(Style::default().dim().bold()))?;
-            Ok(Some(area))
-        }
+        todo!();
+        //let mut area = to.area();
+        //if let Some(chain) = self.chain {
+            //match self.direction {
+                //Direction::Down  => area.width = area.width.min(40),
+                //Direction::Right => area.width = area.width.min(10),
+                //_ => { unimplemented!() },
+            //}
+            //to.fill_bg(to.area(), Nord::bg_lo(self.focused, self.entered));
+            //let mut split = Split::new(self.direction);
+            //for device in chain.devices.as_slice().iter() {
+                //split = split.add_ref(device);
+            //}
+            //let (area, areas) = split.render_areas(to)?;
+            //if self.focused && self.entered && areas.len() > 0 {
+                //Corners(Style::default().green().not_dim()).draw(to.with_rect(areas[0]))?;
+            //}
+            //Ok(Some(area))
+        //} else {
+            //let [x, y, width, height] = area;
+            //let label = "No chain selected";
+            //let x = x + (width - label.len() as u16) / 2;
+            //let y = y + height / 2;
+            //to.blit(&label, x, y, Some(Style::default().dim().bold()))?;
+            //Ok(Some(area))
+        //}
     }
 }

crates/tek_sequencer/src/arranger_rename.rs

@@ -99,3 +99,8 @@ impl Exit for ArrangerRenameModal {
         self.done = true
     }
 }
+impl Layout<Tui> for ArrangerRenameModal {
+    fn layout (&self, area: [u16;4]) -> Perhaps<[u16;4]> {
+        todo!()
+    }
+}

crates/tek_test/Cargo.toml

@@ -0,0 +1,9 @@
+[package]
+name = "tek_test"
+edition = "2021"
+version = "0.1.0"
+
+[dependencies]
+tek_core = { path = "../tek_core" }
+tek_mixer = { path = "../tek_mixer" }
+tek_sequencer = { path = "../tek_sequencer" }

crates/tek_test/src/main.rs

@@ -0,0 +1,50 @@
+use tek_core::*;
+
+pub fn main () -> Usually<()> {
+    Tui::run(Arc::new(RwLock::new(Demo::new())))?;
+    Ok(())
+}
+
+pub struct Demo {
+    index: usize,
+    items: Vec<Box<dyn Component<Tui>>>
+}
+
+impl Demo {
+    fn new () -> Self {
+        let items = vec![];
+        Self { index: 0, items }
+    }
+}
+
+impl Handle<Tui> for Demo {
+    fn handle (&mut self, from: &Tui) -> Perhaps<bool> {
+        match from.event() {
+            key!(KeyCode::PageUp) => {
+                self.index = (self.index + 1) % self.items.len();
+                Ok(Some(true))
+            },
+            key!(KeyCode::PageDown) => {
+                self.index = if self.index > 1 {
+                    self.index - 1
+                } else {
+                    self.items.len() - 1
+                };
+                Ok(Some(true))
+            },
+            _ =>  Ok(None)
+        }
+    }
+}
+
+impl Layout<Tui> for Demo {
+    fn layout (&self, area: [u16;4]) -> Perhaps<[u16;4]> {
+        Align::Center(self.items[self.index]).layout(area)
+    }
+}
+
+impl Render<Tui> for Demo {
+    fn render (&self, to: &mut Tui) -> Perhaps<[u16;4]> {
+        Align::Center(self.items[self.index]).render(to)
+    }
+}