Impl. show percentage, minor fixes

Implement showing percentage of song played next to time remaining.

Add flag to disable showing percentage.

Fix time remaining background persisting when song is no longer playing.

src/display.rs

@@ -54,6 +54,14 @@ fn seconds_to_time(seconds: f64) -> String {
     result
 }
 
+fn time_to_percentage(total: f64, current: f64) -> String {
+    let result = (100.0f64 * current / total).to_string();
+    match result.split_once('.') {
+        Some((a, _)) => a.to_string() + "%",
+        None => result + "%",
+    }
+}
+
 #[cfg(not(feature = "unicode_support"))]
 #[allow(clippy::ptr_arg)]
 fn string_to_text(
@@ -227,6 +235,7 @@ pub struct MPDDisplay {
     text_bg_mesh: Option<Mesh>,
     hide_text: bool,
     tried_album_art_in_dir: bool,
+    prev_mpd_play_state: MPDPlayState,
     mpd_play_state: MPDPlayState,
     loaded_fonts: Vec<(PathBuf, String)>,
 }
@@ -267,6 +276,7 @@ impl MPDDisplay {
             text_bg_mesh: None,
             hide_text: false,
             tried_album_art_in_dir: false,
+            prev_mpd_play_state: MPDPlayState::Playing,
             mpd_play_state: MPDPlayState::Playing,
             loaded_fonts: Vec::new(),
             filename_string_cache: String::new(),
@@ -714,10 +724,8 @@ impl MPDDisplay {
                 Color::from_rgba(0, 0, 0, self.opts.text_bg_opacity),
             )?;
         }
-        let mesh: Mesh = Mesh::from_data(
-            ctx,
-            mesh_builder
-                .rectangle(
+        if self.mpd_play_state == MPDPlayState::Playing {
+            mesh_builder.rectangle(
                 DrawMode::fill(),
                 Rect {
                     x: TEXT_X_OFFSET,
@@ -726,9 +734,9 @@ impl MPDDisplay {
                     h: timer_dimensions.h,
                 },
                 Color::from_rgba(0, 0, 0, self.opts.text_bg_opacity),
-                )?
-                .build(),
-        );
+            )?;
+        }
+        let mesh: Mesh = Mesh::from_data(ctx, mesh_builder.build());
 
         self.text_bg_mesh = Some(mesh);
 
@@ -831,8 +839,10 @@ impl EventHandler for MPDDisplay {
                             self.length = 0.0;
                             self.album_art = None;
                         }
+                        self.prev_mpd_play_state = self.mpd_play_state;
                         self.mpd_play_state = shared.mpd_play_state;
                     } else {
+                        self.prev_mpd_play_state = self.mpd_play_state;
                         self.mpd_play_state = MPDPlayState::Playing;
                         if !shared.title.is_empty() {
                             if shared.title != self.title_string_cache {
@@ -929,7 +939,11 @@ impl EventHandler for MPDDisplay {
 
         let delta = ctx.time.delta();
         self.timer += delta.as_secs_f64();
-        let timer_diff = seconds_to_time(self.length - self.timer);
+        let mut timer_diff = seconds_to_time(self.length - self.timer);
+        if !self.opts.disable_show_percentage {
+            let timer_percentage = time_to_percentage(self.length, self.timer);
+            timer_diff = timer_diff + " " + &timer_percentage;
+        }
         let timer_diff_len = timer_diff.len();
         self.timer_text = Text::new(timer_diff);
         self.timer_text.set_scale(PxScale {
@@ -939,6 +953,11 @@ impl EventHandler for MPDDisplay {
         if timer_diff_len != self.timer_text_len {
             self.timer_text_len = timer_diff_len;
             self.update_bg_mesh(ctx)?;
+        } else if self.mpd_play_state != MPDPlayState::Playing
+            && self.prev_mpd_play_state == MPDPlayState::Playing
+        {
+            self.update_bg_mesh(ctx)?;
+            self.prev_mpd_play_state = self.mpd_play_state;
         }
 
         Ok(())

src/main.rs

@@ -35,6 +35,8 @@ pub struct Opt {
     disable_show_album: bool,
     #[arg(long = "disable-show-filename", help = "disable filename display")]
     disable_show_filename: bool,
+    #[arg(long = "disable-show-percentage", help = "disable percentage display")]
+    disable_show_percentage: bool,
     #[arg(long = "pprompt", help = "input password via prompt")]
     enable_prompt_password: bool,
     #[arg(long = "pfile", help = "read password from file")]