java implementation + completed

1 files changed, 104 insertions, 0 deletions

diff --git a/Adjbacklight.java b/Adjbacklight.java
new file mode 100755
index 0000000..c632d65
--- /dev/null
+++ b/Adjbacklight.java
@@ -0,0 +1,104 @@
+import java.io.*;
+import java.util.*;
+
+
+/**
+ * @author  Mattias Andrée, <a href="mailto:maandree@kth.se">maandree@kth.se</a>
+ */
+public class Adjbacklight
+{
+    public static void main(final String... args) throws IOException
+    {
+	String dir = "/sys/class/backlight/intel_backlight/";
+	int width = Integer.parseInt(args[1]);
+	int max = 0, min = 0, cur = 0;
+	
+	{   InputStream is = null;
+	    try
+	    {	is = new FileInputStream(dir + "brightness");
+		Scanner sc = new Scanner(is);
+		cur = Integer.parseInt(sc.nextLine());
+	    }
+	    finally
+	    {   if (is != null)
+		    is.close();
+	    }
+	}
+	{   InputStream is = null;
+	    try
+	    {	is = new FileInputStream(dir + "max_brightness");
+		Scanner sc = new Scanner(is);
+		max = Integer.parseInt(sc.nextLine());
+	    }
+	    finally
+	    {   if (is != null)
+		    is.close();
+	    }
+	}
+	
+	if (max <= min)
+	    System.exit(127);
+        int step = (max - min) / 100;
+	int init = cur;
+	
+	System.out.print("\n\n\n\n\n\n");
+	print(min, max, init, cur, width);
+	
+	for (int d; (d = System.in.read()) != -1;)
+	    switch (d)
+	    {
+		case 'q':
+		case '\n':
+		case 4:
+		    System.out.println();
+		    return;
+		
+		case 'A':
+		case 'C':  cur += step << 1;
+		case 'B':
+		case 'D':  cur -= step;
+		    
+		    if (cur < min)  cur = min;
+		    if (cur > max)  cur = max;
+		    
+		    {   OutputStream os = null;
+			try
+			{   os = new FileOutputStream(dir + "brightness");
+			    os.write((cur + "\n").getBytes("UTF-8"));
+			    os.flush();
+			    print(min, max, init, cur, width);
+			}
+			finally
+			{   if (os != null)
+				os.close();
+			}
+		    }
+		    break;
+	    }
+    }
+    
+    private static void print(int min, int max, int init, int cur, int width)
+    {
+	String line = "──────────────────────────────────";
+	while (line.length() < width - 2)
+	    line += line;
+	line = line.substring(0, width - 2);
+	
+	String space = "                                  ";
+	while (space.length() < width - 2)
+	    space += space;
+	space = space.substring(0, width - 2);
+	
+	int mid = (int)((cur - min) * (width - 2.) / (max - min) + 0.5);
+	
+	System.out.print("\033[1000D\033[6A");
+	System.out.println("\033[2K┌" + line + "┐");
+	System.out.println("\033[2K│\033[47m" + space.substring(0, mid) + "\033[49m" + space.substring(mid) + "│");
+	System.out.println("\033[2K└" + line + "┘");
+	System.out.println("\033[2KMaximum brightness: " + max);
+	System.out.println("\033[2KInitial brightness: " + init);
+	System.out.println("\033[2KCurrent brightness: " + cur);
+    }
+    
+}
+