X-Git-Url: https://git.toastfreeware.priv.at/gregoa/zavai.git/blobdiff_plain/6c19eb27e8edc8eefd89b86929861e95ea1a7c95..ec503392ddba6000fac8ac18dea94a0e2ba860c1:/src/power.vala

diff --git a/src/power.vala b/src/power.vala
index c70fd9b..5571117 100644
--- a/src/power.vala
+++ b/src/power.vala
@@ -23,7 +23,7 @@ using GLib;
 namespace zavai {
 namespace power {
 
-class Power : Service
+public class Power : Service
 {
     public enum State
     {
@@ -41,7 +41,9 @@ class Power : Service
 
     public Power()
     {
-        battery_device = "";
+        battery_device = "/sys/class/power_supply/battery/";
+        if (Posix.access(battery_device, Posix.R_OK) != 0)
+            battery_device = null;
         timeout = 0;
         state = State.UNKNOWN;
         percentage = 0;
@@ -55,19 +57,30 @@ class Power : Service
         uint poll_time;
         if (uevent.uevent != null)
         {
+            zavai.log.info("We have uevent: poll rarely");
             uevent.uevent.event += on_uevent;
             uevent.uevent.request("zavai.power");
             // If we can get plug/unplug notifications, it's ok to just poll
             // every 5 minutes
             poll_time = 300 * 1000;
         } else {
-            // Else poll every 30 seconds to be somehow reactive to plug/unplug
-            // events
-            poll_time = 30 * 1000;
+            if (battery_device == null)
+            {
+                zavai.log.warning("No battery device found that I know how to read: try building with devkit-power");
+                poll_time = 0;
+            } else {
+                zavai.log.info("Polling battery device only");
+                // Else poll every 30 seconds to be somehow reactive to plug/unplug
+                // events
+                poll_time = 30 * 1000;
+            }
         }
 
+        poll();
+
         // Poll battery every minute
-        timeout = Timeout.add(poll_time, on_timeout);
+        if (poll_time != 0)
+            timeout = Timeout.add(poll_time, on_timeout);
 
         base.start();
     }
@@ -78,7 +91,8 @@ class Power : Service
         if (!started) return;
 
         // Stop polling
-        Source.remove(timeout);
+        if (timeout != 0)
+            Source.remove(timeout);
 
         if (uevent.uevent != null)
         {
@@ -89,13 +103,43 @@ class Power : Service
         base.stop();
     }
 
-    bool on_timeout()
+    protected void poll()
+    {
+        if (battery_device == null)
+            return;
+
+        char buf[200];
+        State new_state = State.UNKNOWN;
+        int new_percentage = 0;
+
+        FileStream state_fd = FileStream.open(battery_device + "/status", "r");
+        string val = state_fd.gets(buf);
+        if (val == "Charging")
+            new_state = State.CHARGING;
+        else if (val == "Discharging")
+            new_state = State.DISCHARGING;
+        else if (val == "Not charging")
+            new_state = State.FULLY_CHARGED;
+
+        FileStream cap_fd = FileStream.open(battery_device + "/capacity", "r");
+        val = cap_fd.gets(buf);
+        new_percentage = val.to_int();
+
+        if (new_state != state || new_percentage != percentage)
+        {
+            state = new_state;
+            percentage = new_percentage;
+            changed();
+        }
+    }
+
+    protected bool on_timeout()
     {
-        changed();
+        poll();
         return true;
     }
 
-    void on_uevent()
+    protected void on_uevent()
     {
         /* if (uevent.uevent.event_data.buffer.has_prefix("change@/class/power_supply/ac"))
         {
@@ -137,7 +181,7 @@ class Power : Service
     }
 }
 
-Power power;
+public Power power;
 
 public void init()
 {