add help

3 files changed, 50 insertions, 0 deletions

diff --git a/src/bin/ttyplay/display.rs b/src/bin/ttyplay/display.rs
index f5bcb00..3ae84e9 100644
--- a/src/bin/ttyplay/display.rs
+++ b/src/bin/ttyplay/display.rs
@@ -6,6 +6,7 @@ pub struct Display {
     done_loading: bool,
     paused: bool,
     show_ui: bool,
+    show_help: bool,
 }
 
 impl Display {
@@ -16,6 +17,7 @@ impl Display {
             done_loading: false,
             paused: false,
             show_ui: true,
+            show_help: false,
         }
     }
 
@@ -39,6 +41,10 @@ impl Display {
         self.show_ui = !self.show_ui;
     }
 
+    pub fn toggle_help(&mut self) {
+        self.show_help = !self.show_help;
+    }
+
     pub async fn render(
         &self,
         screen: &vt100::Screen,
@@ -71,6 +77,37 @@ impl Display {
             output.set_bgcolor(textmode::color::RED);
             output.write_str("\u{23f8}");
 
+            if self.show_help {
+                output.reset_attributes();
+                output.set_fgcolor(textmode::color::BLACK);
+                output.set_bgcolor(textmode::color::CYAN);
+
+                output.move_to(size.0 - 12, size.1 - 23);
+                output.write_str("         keys          ");
+                output.move_to(size.0 - 11, size.1 - 23);
+                output.write_str(" q:     quit           ");
+                output.move_to(size.0 - 10, size.1 - 23);
+                output.write_str(" space: pause/unpause  ");
+                output.move_to(size.0 - 9, size.1 - 23);
+                output.write_str(" tab:   hide/show ui   ");
+                output.move_to(size.0 - 8, size.1 - 23);
+                output.write_str(" h/p:   previous frame ");
+                output.move_to(size.0 - 7, size.1 - 23);
+                output.write_str(" l/n:   next frame     ");
+                output.move_to(size.0 - 6, size.1 - 23);
+                output.write_str(" g/0:   first frame    ");
+                output.move_to(size.0 - 5, size.1 - 23);
+                output.write_str(" G/$:   last frame     ");
+                output.move_to(size.0 - 4, size.1 - 23);
+                output.write_str(" +:     increase speed ");
+                output.move_to(size.0 - 3, size.1 - 23);
+                output.write_str(" -:     decrease speed ");
+                output.move_to(size.0 - 2, size.1 - 23);
+                output.write_str(" =:     normal speed   ");
+                output.move_to(size.0 - 1, size.1 - 23);
+                output.write_str(" ?:     hide/show help ");
+            }
+
             output.reset_attributes();
             output.move_to(pos.0, pos.1);
         }
diff --git a/src/bin/ttyplay/event.rs b/src/bin/ttyplay/event.rs
index 3a68965..68900cd 100644
--- a/src/bin/ttyplay/event.rs
+++ b/src/bin/ttyplay/event.rs
@@ -4,6 +4,7 @@ pub enum Event {
     Paused(bool),
     TimerAction(TimerAction),
     ToggleUi,
+    ToggleHelp,
     Quit,
 }
 
@@ -70,6 +71,7 @@ struct Pending {
     paused: Option<bool>,
     timer_actions: std::collections::VecDeque<TimerAction>,
     toggle_ui: bool,
+    toggle_help: bool,
     quit: bool,
 }
 
@@ -99,6 +101,9 @@ impl Pending {
             Event::ToggleUi => {
                 self.toggle_ui = !self.toggle_ui;
             }
+            Event::ToggleHelp => {
+                self.toggle_help = !self.toggle_help;
+            }
             Event::Quit => {
                 self.quit = true;
             }
@@ -112,6 +117,7 @@ impl Pending {
             || self.paused.is_some()
             || !self.timer_actions.is_empty()
             || self.toggle_ui
+            || self.toggle_help
             || self.quit
     }
 
@@ -124,6 +130,9 @@ impl Pending {
         } else if self.toggle_ui {
             self.toggle_ui = false;
             Some(Event::ToggleUi)
+        } else if self.toggle_help {
+            self.toggle_help = false;
+            Some(Event::ToggleHelp)
         } else if let Some(paused) = self.paused.take() {
             Some(Event::Paused(paused))
         } else if let Some(frame) = self.frame_loaded.take() {
@@ -170,6 +179,9 @@ pub async fn handle_events(
             Event::ToggleUi => {
                 display.toggle_ui();
             }
+            Event::ToggleHelp => {
+                display.toggle_help();
+            }
             Event::Quit => {
                 break;
             }
diff --git a/src/bin/ttyplay/input.rs b/src/bin/ttyplay/input.rs
index 266c419..d061e24 100644
--- a/src/bin/ttyplay/input.rs
+++ b/src/bin/ttyplay/input.rs
@@ -30,6 +30,7 @@ pub fn spawn_task(
                     crate::event::TimerAction::Pause,
                 ),
                 textmode::Key::Ctrl(b'i') => crate::event::Event::ToggleUi,
+                textmode::Key::Char('?') => crate::event::Event::ToggleHelp,
                 textmode::Key::Char('+') => crate::event::Event::TimerAction(
                     crate::event::TimerAction::SpeedUp,
                 ),