move formatting onto time traits

crates/tek_core/src/time.rs

@@ -2,10 +2,10 @@ use crate::*;
 use std::iter::Iterator;
 
 /// Any numeric type that represents time
-pub trait TimeUnit: PartialEq + Copy + Display
+pub trait TimeUnit: Copy + Display + PartialOrd + PartialEq
     + Add<Self, Output=Self> + Mul<Self, Output=Self>
     + Div<Self, Output=Self> + Rem<Self, Output=Self> {}
-impl<T> TimeUnit for T where T: PartialEq + Copy + Display
+impl<T> TimeUnit for T where T: Copy + Display + PartialOrd + PartialEq
     + Add<Self, Output=Self> + Mul<Self, Output=Self>
     + Div<Self, Output=Self> + Rem<Self, Output=Self> {}
 
@@ -121,6 +121,18 @@ pub trait PulsesPerQuaver<U: TimeUnit> {
     {
         self.sr() / self.pulses_per_second()
     }
+
+    #[inline] fn format_beats (&self, pulse: U) -> String where U: TimeInteger {
+        let ppq = self.ppq();
+        let (beats, pulses) = if ppq > U::from(0) {
+            (pulse / ppq, pulse % ppq)
+        } else {
+            (U::from(0), U::from(0))
+        };
+        let bars  = (beats / U::from(4)) + U::from(1);
+        let beats = (beats % U::from(4)) + U::from(1);
+        format!("{bars}.{beats}.{pulses:02}")
+    }
 }
 
 pub trait FramePosition<U: TimeUnit> {
@@ -131,11 +143,22 @@ pub trait FramePosition<U: TimeUnit> {
 pub trait PulsePosition<U: TimeUnit> {
     fn pulse (&self) -> U;
     fn set_pulse (&self, pulse: U);
+    #[inline] fn format_current_pulse (&self) -> String
+        where Self: PulsesPerQuaver<U>, U: TimeInteger
+    {
+        self.format_beats(self.pulse())
+    }
 }
 
 pub trait UsecPosition<U: TimeUnit> {
     fn usec (&self) -> U;
     fn set_usec (&self, usec: U);
+    #[inline] fn format_current_usec (&self) -> String where U: From<usize> {
+        let usecs              = self.usec();
+        let (seconds, msecs)   = (usecs / U::from(1000000), usecs / U::from(1000) % U::from(1000));
+        let (minutes, seconds) = (seconds / U::from(60), seconds % U::from(60));
+        format!("{minutes}:{seconds:02}:{msecs:03}")
+    }
 }
 
 pub trait LaunchSync<U: TimeUnit> {