Battery Percentage Pattern for Slash Lighting (#2685)

* quicksave / testing

* implemented battery charge pattern

* changed defaults

* immediately refresh pattern

* cleaned up comments

app/AnimeMatrix/AniMatrixControl.cs

@@ -14,6 +14,7 @@ namespace GHelper.AnimeMatrix
         SettingsForm settings;
 
         System.Timers.Timer matrixTimer = default!;
+        System.Timers.Timer slashTimer = default!;
 
         public AnimeMatrixDevice? deviceMatrix;
         public SlashDevice? deviceSlash;
@@ -45,6 +46,7 @@ namespace GHelper.AnimeMatrix
 
                 matrixTimer = new System.Timers.Timer(100);
                 matrixTimer.Elapsed += MatrixTimer_Elapsed;
+
             }
             catch (Exception ex)
             {
@@ -101,7 +103,7 @@ namespace GHelper.AnimeMatrix
 
                     deviceSlash.SetEnabled(true);
                     deviceSlash.Init();
-
+                    
                     switch ((SlashMode)running)
                     {
                         case SlashMode.Static:
@@ -114,12 +116,18 @@ namespace GHelper.AnimeMatrix
                                 deviceSlash.SetStatic(brightness);
                             }
                             break;
+                        case SlashMode.BatteryLevel:
+                            // call tick to immediately update the pattern
+                            SlashTimer_start();
+                            SlashTimer_tick();
+                            break;
                         default:
                             deviceSlash.SetMode((SlashMode)running);
                             deviceSlash.SetOptions(true, brightness, inteval);
                             deviceSlash.Save();
                             break;
                     }
+                    // kill the timer if we are not displaying battery pattern
 
                     deviceSlash.SetSleepActive(true);
                 }
@@ -237,7 +245,6 @@ namespace GHelper.AnimeMatrix
             matrixTimer.Stop();
         }
 
-
         private void MatrixTimer_Elapsed(object? sender, ElapsedEventArgs e)
         {
 
@@ -255,13 +262,58 @@ namespace GHelper.AnimeMatrix
 
         }
 
-
         public void SetMatrixClock()
         {
             deviceMatrix.SetBuiltInAnimation(false);
             StartMatrixTimer(1000);
             Logger.WriteLine("Matrix Clock");
         }
+        
+        
+        private void SlashTimer_start(int interval = 60000)
+        {
+            // 100% to 0% in 1hr = 1% every 36 seconds
+            // 1 bracket every 14.2857 * 36s = 514s ~ 8m 30s
+            // only ~5 actually distinguishable levels, so refresh every <= 514/5 ~ 100s
+            // default is 60s
+
+            // create the timer if first call
+            // this way, the timer only spawns if user tries to use battery pattern
+            if(slashTimer == default(System.Timers.Timer))
+            {
+                slashTimer = new System.Timers.Timer(interval);
+                slashTimer.Elapsed += SlashTimer_elapsed;
+                slashTimer.AutoReset = true;
+            }
+            // only write if interval changed
+            if(slashTimer.Interval != interval)
+            {
+                slashTimer.Interval = interval;
+            }
+            
+            slashTimer.Start();
+        }
+
+        private void SlashTimer_elapsed(object? sender, ElapsedEventArgs e)
+        {
+            SlashTimer_tick();
+        }
+
+        private void SlashTimer_tick()
+        {
+            if (deviceSlash is null) return;
+
+            //kill timer if called but not in battery pattern mode
+            if((SlashMode)AppConfig.Get("matrix_running", 0) != SlashMode.BatteryLevel)
+            {
+                slashTimer.Stop();
+                slashTimer.Dispose();
+                return;
+            }
+
+            deviceSlash.SetBatteryPattern(AppConfig.Get("matrix_brightness", 0));
+        }
+
 
         public void Dispose()
         {
@@ -397,7 +449,6 @@ namespace GHelper.AnimeMatrix
             deviceMatrix.Present();
         }
 
-
         public void OpenMatrixPicture()
         {
             string fileName = null;

app/AnimeMatrix/SlashDevice.cs

@@ -1,5 +1,7 @@
 using GHelper.AnimeMatrix.Communication;
+using System.Management;
 using System.Text;
+using System.Timers;
 
 namespace GHelper.AnimeMatrix
 {
@@ -20,7 +22,8 @@ namespace GHelper.AnimeMatrix
         GameOver,
         Start,
         Buzzer,
-        Static
+        Static,
+        BatteryLevel,
     }
 
     internal class SlashPacket : Packet
@@ -54,7 +57,9 @@ namespace GHelper.AnimeMatrix
             { SlashMode.GameOver, "Game Over"},
             { SlashMode.Start, "Start"},
             { SlashMode.Buzzer, "Buzzer"},
+
             { SlashMode.Static, "Static"},
+            { SlashMode.BatteryLevel, "Battery Level"}
         };
 
         private static Dictionary<SlashMode, byte> modeCodes = new Dictionary<SlashMode, byte>
@@ -127,7 +132,50 @@ namespace GHelper.AnimeMatrix
         public void SetStatic(int brightness = 0)
         {
             SetCustom(Enumerable.Repeat((byte)(brightness * 85.333), 7).ToArray());
+        }
 
+        public static double GetBatteryChargePercentage()
+            {
+                double batteryCharge = 0;
+                try
+                {
+                    ManagementObjectSearcher searcher = new ManagementObjectSearcher("SELECT * FROM Win32_Battery");
+                    foreach (ManagementObject battery in searcher.Get())
+                    {
+                        batteryCharge = Convert.ToDouble(battery["EstimatedChargeRemaining"]);
+                        break; // Assuming only one battery
+                    }
+                }
+                catch (ManagementException e)
+                {
+                    Console.WriteLine("An error occurred while querying for WMI data: " + e.Message);
+                }
+                return batteryCharge;
+            }
+
+        private byte[] GetBatteryPattern(int brightness, double percentage)
+        {
+            // because 7 segments, within each led segment represents a percentage bracket of (100/7 = 14.2857%)
+            // set brightness to reflect battery's percentage within that range
+
+            int bracket = (int)Math.Floor(percentage / 14.2857);
+            if(bracket >= 7) return Enumerable.Repeat((byte)(brightness * 85.333), 7).ToArray();
+            
+            byte[] batteryPattern = Enumerable.Repeat((byte)(0x00), 7).ToArray();
+            for (int i = 6; i > 6-bracket; i--)
+            {
+                batteryPattern[i] = (byte)(brightness * 85.333);
+            }
+
+            //set the "selected" bracket to the percentage of that bracket filled from 0 to 255 as a hex
+            batteryPattern[6-bracket] = (byte)(((percentage % 14.2857) * brightness * 85.333) / 14.2857);
+
+            return batteryPattern;
+        }
+
+        public void SetBatteryPattern(int brightness)
+        {
+            SetCustom(GetBatteryPattern(brightness, 100*(GetBatteryChargePercentage()/AppConfig.Get("charge_limit",100))));
         }
 
         public void SetCustom(byte[] data)