From 480b9f9324bfcae611dd01ee8e793515e57c0e26 Mon Sep 17 00:00:00 2001
From: Jesse Luehrs <doy@tozt.net>
Date: Wed, 6 Nov 2019 15:14:33 -0500
Subject: add basic ui to the player

---
 src/cmd/play.rs | 97 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 src/main.rs     |  1 +
 2 files changed, 98 insertions(+)

diff --git a/src/cmd/play.rs b/src/cmd/play.rs
index a3986ea..c6fec4b 100644
--- a/src/cmd/play.rs
+++ b/src/cmd/play.rs
@@ -87,6 +87,10 @@ impl Ttyrec {
     fn frame(&self, idx: usize) -> Option<&Frame> {
         self.frames.get(idx)
     }
+
+    fn len(&self) -> usize {
+        self.frames.len()
+    }
 }
 
 struct Player {
@@ -117,10 +121,18 @@ impl Player {
         }
     }
 
+    fn current_frame_idx(&self) -> usize {
+        self.idx
+    }
+
     fn current_frame(&self) -> Option<&Frame> {
         self.ttyrec.frame(self.idx)
     }
 
+    fn num_frames(&self) -> usize {
+        self.ttyrec.len()
+    }
+
     fn base_time_incr(&mut self, incr: std::time::Duration) {
         self.base_time += incr;
         self.set_timer();
@@ -281,6 +293,7 @@ impl PlaySession {
                 ' ',
             )) => {
                 self.player.toggle_pause();
+                self.redraw()?;
             }
             crossterm::InputEvent::Keyboard(crossterm::KeyEvent::Char(
                 '+',
@@ -321,6 +334,7 @@ impl PlaySession {
             return Ok(());
         };
         self.write(&frame.full)?;
+        self.draw_ui()?;
         Ok(())
     }
 
@@ -332,6 +346,85 @@ impl PlaySession {
         stdout.flush().context(crate::error::FlushTerminal)?;
         Ok(())
     }
+
+    fn draw_ui(&self) -> Result<()> {
+        if self.player.paused() {
+            let msg = format!(
+                "paused (frame {}/{})",
+                self.player.current_frame_idx() + 1,
+                self.player.num_frames()
+            );
+            let size = crate::term::Size::get()?;
+
+            self.write(b"\x1b7")?;
+            self.write(b"\x1b[37;44m\x1b[2;2H")?;
+            self.write("╭".as_bytes())?;
+            self.write("─".repeat(2 + msg.len()).as_bytes())?;
+            self.write("╮".as_bytes())?;
+            self.write(b"\x1b[3;2H")?;
+            self.write(format!("│ {} │", msg).as_bytes())?;
+            self.write(b"\x1b[4;2H")?;
+            self.write("╰".as_bytes())?;
+            self.write("─".repeat(2 + msg.len()).as_bytes())?;
+            self.write("╯".as_bytes())?;
+            self.write(
+                format!("\x1b[{};{}H", size.rows - 10, size.cols - 24)
+                    .as_bytes(),
+            )?;
+            self.write("╭".as_bytes())?;
+            self.write("─".repeat(22).as_bytes())?;
+            self.write("╮".as_bytes())?;
+            self.write(
+                format!("\x1b[{};{}H", size.rows - 9, size.cols - 24)
+                    .as_bytes(),
+            )?;
+            self.write("│         Keys         │".as_bytes())?;
+            self.write(
+                format!("\x1b[{};{}H", size.rows - 8, size.cols - 24)
+                    .as_bytes(),
+            )?;
+            self.write("│ q: quit              │".as_bytes())?;
+            self.write(
+                format!("\x1b[{};{}H", size.rows - 7, size.cols - 24)
+                    .as_bytes(),
+            )?;
+            self.write("│ Space: pause/unpause │".as_bytes())?;
+            self.write(
+                format!("\x1b[{};{}H", size.rows - 6, size.cols - 24)
+                    .as_bytes(),
+            )?;
+            self.write("│ <: previous frame    │".as_bytes())?;
+            self.write(
+                format!("\x1b[{};{}H", size.rows - 5, size.cols - 24)
+                    .as_bytes(),
+            )?;
+            self.write("│ >: next frame        │".as_bytes())?;
+            self.write(
+                format!("\x1b[{};{}H", size.rows - 4, size.cols - 24)
+                    .as_bytes(),
+            )?;
+            self.write("│ +: increase speed    │".as_bytes())?;
+            self.write(
+                format!("\x1b[{};{}H", size.rows - 3, size.cols - 24)
+                    .as_bytes(),
+            )?;
+            self.write("│ -: decrease speed    │".as_bytes())?;
+            self.write(
+                format!("\x1b[{};{}H", size.rows - 2, size.cols - 24)
+                    .as_bytes(),
+            )?;
+            self.write("│ =: normal speed      │".as_bytes())?;
+            self.write(
+                format!("\x1b[{};{}H", size.rows - 1, size.cols - 24)
+                    .as_bytes(),
+            )?;
+            self.write("╰".as_bytes())?;
+            self.write("─".repeat(22).as_bytes())?;
+            self.write("╯".as_bytes())?;
+            self.write(b"\x1b8")?;
+        }
+        Ok(())
+    }
 }
 
 impl PlaySession {
@@ -403,6 +496,9 @@ impl PlaySession {
                     full,
                     diff,
                 });
+                if self.player.paused() {
+                    self.draw_ui()?;
+                }
             } else {
                 self.file = FileState::Eof;
             }
@@ -443,6 +539,7 @@ impl PlaySession {
 
         if let Some(data) = component_future::try_ready!(self.player.poll()) {
             self.write(&data)?;
+            self.draw_ui()?;
             Ok(component_future::Async::DidWork)
         } else if let FileState::Eof = self.file {
             Ok(component_future::Async::Ready(()))
diff --git a/src/main.rs b/src/main.rs
index d85ebda..fe9b98e 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -5,6 +5,7 @@
 #![allow(clippy::match_same_arms)]
 #![allow(clippy::missing_const_for_fn)]
 #![allow(clippy::multiple_crate_versions)]
+#![allow(clippy::non_ascii_literal)]
 #![allow(clippy::similar_names)]
 #![allow(clippy::single_match)]
 #![allow(clippy::single_match_else)]
-- 
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