Update the screen recording script

Since I'm more familiar with ffmpeg now, I thought of adding the option to follow the mouse and disabling it.

At this point, the notification for starting the recording has been moved into an option since it can be annoying at times.

.scripts/screen-record.sh

@@ -23,17 +23,23 @@ Simply captures a recording with ffmpeg.
 
 This is more reliable than OBS Studio (since I don't how to fully utilize it yet). 
 
-Usage: $0 [-o/--output <OUTPUT_PATH>] [-s/--selection] 
+Usage: $0 [-o/--output <OUTPUT_PATH>] 
 
 Options:
 -h, --help - show the help section
 -o, --output <string> - the path of the output (default: '~/Videos')
+--disable-cursor - disable rendering of the mouse cursor in the recording
+--follow-mouse - enable following of the mouse in the center of the recording
+--enable-notification - disable success notification 
 "
 
 # setting up a exit trap in case of error
 trap 'error_cleanup $LINENO' ERR
 
 OUTPUT=${VIDEOS:-"$HOME/Videos"}
+MOUSELESS=0
+FOLLOW_MOUSE=0
+ENABLE_NOTIFICATION=0
 
 while [[ $# -gt 0 ]]
 do
@@ -45,6 +51,15 @@ do
             OUTPUT="$2"
             shift
             shift;;
+        --disable-cursor)
+            MOUSELESS=1
+            shift;;
+        --follow-mouse)
+            FOLLOW_MOUSE=1
+            shift;;
+        --enable-notification)
+            ENABLE_NOTIFICATION=1
+            shift;;
         *)
             shift;;
     esac
@@ -54,15 +69,30 @@ done
 RECORDING_FILE="/tmp/fds-ffmpeg-currently-recording";
 
 if [[ ! -f $RECORDING_FILE ]]; then 
-    dimensions=$(slop -f "%x %y %w %h %g %i") || exit 1;
+    notify-send --expire-time=1500 "Screen capture selection" "Select a region to record.";
+
+    dimensions=$(slop -f "%x %y %w %h %g %i") || { 
+        notify-send --expire-time=1500 "Screen capture failed" "Selection mode has been exited. Cancelling the recording.";
+        exit 1; 
+    };
     read -r pos_x pos_y width height grid id <<< $dimensions
 
     date_format=$(date +%F-%H-%M-%S)
     
-    recording_command="ffmpeg -y -f x11grab -s ${width}x${height} -i :0.0+${pos_x},$pos_y ${OUTPUT}/$date_format.mkv -nostdin"
+    recording_command="ffmpeg -y -f x11grab " 
+
+    if [[ $MOUSELESS == 1 ]]; then 
+        recording_command+="-draw_mouse 0 ";
+    fi
+
+    if [[ $FOLLOW_MOUSE == 1 ]]; then 
+        recording_command+="-follow_mouse centered ";
+    fi
+    
+    recording_command+="-s ${width}x${height} -i :0.0+${pos_x},$pos_y ${OUTPUT}/$date_format.mkv -nostdin"
 
     $recording_command &
-    WINDOW_ID="$!"
+    PROCESS_ID="$!"
     RETURN_CODE="$?"
     sleep 1;
 
@@ -71,14 +101,16 @@ if [[ ! -f $RECORDING_FILE ]]; then
         exit 1;
     fi
 
-    notify-send "Recording started successfully" "Process ID is at "$WINDOW_ID"";
+    if [[ $ENABLE_NOTIFICATION == 1 ]]; then 
+        notify-send --expire-time=1000 "Recording started successfully" "Process ID is at "$PROCESS_ID"";
+    fi
 
     touch "$RECORDING_FILE";
-    echo "$WINDOW_ID" >> $RECORDING_FILE;
+    echo "$PROCESS_ID" >> $RECORDING_FILE;
 else
-    WINDOW_ID=$(<"$RECORDING_FILE")
+    PROCESS_ID=$(<"$RECORDING_FILE")
     
-    kill $WINDOW_ID
+    kill $PROCESS_ID
 
     if [[ $? != 0 ]]; then 
         notify-send "Recording stop failed" "There's a problem while trying to kill the process. Process ID is at $WINDOW_ID";