add 'seek' operation mode, with ff/rwd/mute. resolves #16

src/controller/controls/mod.rs

@@ -4,14 +4,17 @@ mod null;
 mod paddle;
 mod scroll;
 mod scroll_mt;
+mod seek;
 mod volume;
 mod zoom;
 
 pub use self::media::*;
 pub use self::media_with_volume::*;
+#[allow(unused_imports)]
 pub use self::null::*;
 pub use self::paddle::*;
 pub use self::scroll::*;
 pub use self::scroll_mt::*;
+pub use self::seek::*;
 pub use self::volume::*;
 pub use self::zoom::*;

src/controller/controls/seek.rs

@@ -0,0 +1,45 @@
+use crate::controller::{ControlMode, ControlModeMeta};
+use crate::dial_device::DialHaptics;
+use crate::error::{Error, Result};
+use crate::fake_input;
+
+use evdev_rs::enums::EV_KEY;
+
+pub struct Seek {}
+
+impl Seek {
+    pub fn new() -> Seek {
+        Seek {}
+    }
+}
+
+impl ControlMode for Seek {
+    fn meta(&self) -> ControlModeMeta {
+        ControlModeMeta {
+            name: "Seek",
+            icon: "applications-multimedia",
+            haptics: true,
+            steps: 36,
+        }
+    }
+
+    fn on_btn_press(&mut self, _: &DialHaptics) -> Result<()> {
+        Ok(())
+    }
+
+    fn on_btn_release(&mut self, _: &DialHaptics) -> Result<()> {
+        fake_input::key_click(&[EV_KEY::KEY_PLAYPAUSE]).map_err(Error::Evdev)?;
+        Ok(())
+    }
+
+    fn on_dial(&mut self, _: &DialHaptics, delta: i32) -> Result<()> {
+        if delta > 0 {
+            eprintln!("fast forward");
+            fake_input::key_click(&[EV_KEY::KEY_FASTFORWARD]).map_err(Error::Evdev)?;
+        } else {
+            eprintln!("rewind");
+            fake_input::key_click(&[EV_KEY::KEY_REWIND]).map_err(Error::Evdev)?;
+        }
+        Ok(())
+    }
+}

src/fake_input.rs

@@ -37,6 +37,8 @@ lazy_static::lazy_static! {
                 device.enable(&EventCode::EV_KEY(EV_KEY::KEY_NEXTSONG))?;
                 device.enable(&EventCode::EV_KEY(EV_KEY::KEY_PLAYPAUSE))?;
                 device.enable(&EventCode::EV_KEY(EV_KEY::KEY_PREVIOUSSONG))?;
+                device.enable(&EventCode::EV_KEY(EV_KEY::KEY_FASTFORWARD))?;
+                device.enable(&EventCode::EV_KEY(EV_KEY::KEY_REWIND))?;
 
                 device.enable(&EventCode::EV_KEY(EV_KEY::KEY_LEFT))?;
                 device.enable(&EventCode::EV_KEY(EV_KEY::KEY_RIGHT))?;

src/main.rs

@@ -89,6 +89,7 @@ fn controller_main() -> Result<()> {
             Box::new(controller::controls::Media::new()),
             Box::new(controller::controls::MediaWithVolume::new()),
             Box::new(controller::controls::Paddle::new()),
+            Box::new(controller::controls::Seek::new()),
         ],
     );