reload: Check pids first.

2 files changed, 12 insertions, 4 deletions

diff --git a/pywal/reload.py b/pywal/reload.py
index ff3aa5b..5c2ca8a 100644
--- a/pywal/reload.py
+++ b/pywal/reload.py
@@ -61,25 +61,25 @@ def gtk():
 
 def i3():
     """Reload i3 colors."""
-    if shutil.which("i3-msg"):
+    if shutil.which("i3-msg") and util.get_pid("i3"):
         util.disown(["i3-msg", "reload"])
 
 
 def kitty():
     """ Reload kitty colors. """
-    if shutil.which("kitty"):
+    if shutil.which("kitty") and util.get_pid("kitty"):
         util.disown(["kitty", "@", "set-colors", "--all"])
 
 
 def polybar():
     """Reload polybar colors."""
-    if shutil.which("polybar"):
+    if shutil.which("polybar") and util.get_pid("polybar"):
         util.disown(["pkill", "-USR1", "polybar"])
 
 
 def sway():
     """Reload sway colors."""
-    if shutil.which("swaymsg"):
+    if shutil.which("swaymsg") and util.get_pid("sway"):
         util.disown(["swaymsg", "reload"])
 
 
diff --git a/pywal/util.py b/pywal/util.py
index a915a43..1752f71 100644
--- a/pywal/util.py
+++ b/pywal/util.py
@@ -168,3 +168,11 @@ def disown(cmd):
     subprocess.Popen(cmd,
                      stdout=subprocess.DEVNULL,
                      stderr=subprocess.DEVNULL)
+
+
+def get_pid(name):
+    """Check if process is running by name."""
+    try:
+        subprocess.check_output(["pidof", "-s", name])
+    except subprocess.CalledProcessError:
+        return False