From 2877545140059b2d9f95afa83d225515dded803f Mon Sep 17 00:00:00 2001
From: unspeaker <hora.nqma@protonmail.com>
Date: Fri, 25 Apr 2025 20:56:36 +0300
Subject: [PATCH] sampler: arrows select slot

---
 crates/sampler/src/sampler_api.rs   |  8 +++----
 crates/sampler/src/sampler_model.rs | 36 +++++++++++++++++++++++++----
 crates/sampler/src/sampler_view.rs  | 15 ++----------
 3 files changed, 38 insertions(+), 21 deletions(-)

diff --git a/crates/sampler/src/sampler_api.rs b/crates/sampler/src/sampler_api.rs
index b07c887d..295f0cce 100644
--- a/crates/sampler/src/sampler_api.rs
+++ b/crates/sampler/src/sampler_api.rs
@@ -8,10 +8,10 @@ expose! {
         [f32] => {}
         [u7] => {}
         [usize] => {
-            ":sample-up"    => 0,
-            ":sample-down"  => 0,
-            ":sample-left"  => 0,
-            ":sample-right" => 0,
+            ":sample-up"    => self.note_pos().min(119) + 8,
+            ":sample-down"  => self.note_pos().max(8)   - 8,
+            ":sample-left"  => self.note_pos().min(126) + 1,
+            ":sample-right" => self.note_pos().max(1)   - 1,
         }
     }
 }
diff --git a/crates/sampler/src/sampler_model.rs b/crates/sampler/src/sampler_model.rs
index 90236a2d..794b3755 100644
--- a/crates/sampler/src/sampler_model.rs
+++ b/crates/sampler/src/sampler_model.rs
@@ -14,14 +14,16 @@ pub struct Sampler {
     pub audio_outs:  Vec<JackAudioOut>,
     pub buffer:      Vec<Vec<f32>>,
     pub output_gain: f32,
-    pub cursor:  (usize, usize),
     pub editing: Option<Arc<RwLock<Sample>>>,
     pub mode:    Option<SamplerMode>,
     /// Size of actual notes area
     pub size:    Measure<TuiOut>,
     /// Lowest note displayed
     pub note_lo: AtomicUsize,
+    /// Selected note
     pub note_pt: AtomicUsize,
+    /// Selected note as row/col
+    pub cursor:  (AtomicUsize, AtomicUsize),
     pub color:   ItemPalette
 }
 
@@ -40,11 +42,11 @@ impl Default for Sampler {
             output_gain: 1.,
             recording:   None,
             mode:        None,
-            cursor:      (0, 0),
             editing:     None,
             size:        Default::default(),
             note_lo:     0.into(),
             note_pt:     0.into(),
+            cursor:      (0.into(), 0.into()),
             color:       Default::default(),
         }
     }
@@ -94,17 +96,43 @@ impl Sampler {
     /// Immutable reference to sample at cursor.
     pub fn sample (&self) -> Option<&Arc<RwLock<Sample>>> {
         for (i, sample) in self.mapped.iter().enumerate() {
-            if i == self.cursor.0 {
+            if i == self.cursor().0 {
                 return sample.as_ref()
             }
         }
         for (i, sample) in self.unmapped.iter().enumerate() {
-            if i + self.mapped.len() == self.cursor.0 {
+            if i + self.mapped.len() == self.cursor().0 {
                 return Some(sample)
             }
         }
         None
     }
+    /// Value of cursor
+    pub fn cursor (&self) -> (usize, usize) {
+        (self.cursor.0.load(Relaxed), self.cursor.1.load(Relaxed))
+    }
+}
+
+impl NoteRange for Sampler {
+    fn note_lo (&self) -> &AtomicUsize {
+        &self.note_lo
+    }
+    fn note_axis (&self) -> &AtomicUsize {
+        &self.size.y
+    }
+}
+
+impl NotePoint for Sampler {
+    fn note_len (&self) -> usize {0/*TODO*/}
+    fn set_note_len (&self, x: usize) {}
+    fn note_pos (&self) -> usize {
+        self.note_pt.load(Relaxed)
+    }
+    fn set_note_pos (&self, x: usize) {
+        self.note_pt.store(x, Relaxed);
+        self.cursor.0.store(x % 8, Relaxed);
+        self.cursor.1.store(x / 8, Relaxed);
+    }
 }
 
 /// A sound sample.
diff --git a/crates/sampler/src/sampler_view.rs b/crates/sampler/src/sampler_view.rs
index 926e1a13..1faec29a 100644
--- a/crates/sampler/src/sampler_view.rs
+++ b/crates/sampler/src/sampler_view.rs
@@ -22,10 +22,11 @@ impl Sampler {
     pub fn view_grid_cell <'a> (
         &'a self, name: &'a str, x: u16, y: u16, w: u16, h: u16
     ) -> impl Content<TuiOut> + use<'a> {
+        let cursor = self.cursor();
         let hi_fg = Color::Rgb(64, 64, 64);
         let hi_bg = if y == 0 { Color::Reset } else { Color::Rgb(64, 64, 64) /*prev*/ };
         let tx_fg = Color::Rgb(255, 255, 255);
-        let tx_bg = if x as usize == self.cursor.0 && y as usize == self.cursor.1 {
+        let tx_bg = if x as usize == cursor.0 && y as usize == cursor.1 {
             Color::Rgb(96, 96, 96)
         } else {
             Color::Rgb(64, 64, 64)
@@ -85,18 +86,6 @@ render!(TuiOut: |self: SamplesTui, to| {
     }
 });
 
-impl NoteRange for Sampler {
-    fn note_lo (&self) -> &AtomicUsize { &self.note_lo }
-    fn note_axis (&self) -> &AtomicUsize { &self.size.y  }
-}
-
-impl NotePoint for Sampler {
-    fn note_len (&self) -> usize {0/*TODO*/}
-    fn set_note_len (&self, x: usize) {}
-    fn note_pos (&self) -> usize { self.note_pt.load(Relaxed) }
-    fn set_note_pos (&self, x: usize) { self.note_pt.store(x, Relaxed); }
-}
-
 impl Sampler {
     const _EMPTY: &[(f64, f64)] = &[(0., 0.), (1., 1.), (2., 2.), (0., 2.), (2., 0.)];
     pub fn list <'a> (&'a self, compact: bool, editor: &MidiEditor) -> impl Content<TuiOut> + 'a {