i3 next branch send click events on mouse wheel up/down. This patch allows to change the alsa volume with the mousewheel when hovering the alsa indicator

i3pystatus/alsa.py

@@ -25,6 +25,7 @@ class ALSA(IntervalModule):
         ("mixer", "ALSA mixer"),
         ("mixer_id", "ALSA mixer id"),
         ("card", "ALSA sound card"),
+        ("increment","integer percentage of max volume to in/decrement volume on mousewheel"),
         "muted", "unmuted",
         "color_muted", "color",
         "channel"
@@ -40,6 +41,7 @@ class ALSA(IntervalModule):
     mixer_id = 0
     card = 0
     channel = 0
+    increment = 5
 
     alsamixer = None
     has_mute = True
@@ -79,3 +81,11 @@ class ALSA(IntervalModule):
             "full_text": output_format.format(**self.fdict),
             "color": self.color_muted if muted else self.color,
         }
+
+    def on_upscroll(self):
+        vol = self.alsamixer.getvolume()
+        self.alsamixer.setvolume( vol[0] + self.increment)
+
+    def on_downscroll(self):
+        vol = self.alsamixer.getvolume()
+        self.alsamixer.setvolume( vol[0] - self.increment)

i3pystatus/core/modules.py

@@ -27,6 +27,10 @@ class Module(SettingsBase):
             self.on_leftclick()
         elif button == 3:  # Right mouse button
             self.on_rightclick()
+        elif button == 4: # mouse wheel up
+            self.on_upscroll()
+        elif button == 5: # mouse wheel down
+            self.on_downscroll()
 
     def move(self, position):
         self.position = position
@@ -38,6 +42,11 @@ class Module(SettingsBase):
     def on_rightclick(self):
         pass
 
+    def on_upscroll(self):
+        pass
+
+    def on_downscroll(self):
+        pass
 
 class IntervalModuleMeta(type):
     """Add interval setting to `settings` attribute if it does not exist."""