dbus server accepts parsing blur strength and added dbus example

dbus-examples/dbus-strength.sh

@@ -0,0 +1,45 @@
+#!/bin/sh
+
+if [ "$#" -ne 1 ]; then
+    echo "Illegal number of parameters: blur strength is required"
+fi
+
+strength="$@"
+
+if [ -z "$SED" ]; then
+  SED="sed"
+  command -v gsed > /dev/null && SED="gsed"
+fi
+
+# === Get connection parameters ===
+
+dpy=$(echo -n "$DISPLAY" | tr -c '[:alnum:]' _)
+
+if [ -z "$dpy" ]; then
+  echo "Cannot find display."
+  exit 1
+fi
+
+service="com.github.chjj.compton.${dpy}"
+interface='com.github.chjj.compton'
+object='/com/github/chjj/compton'
+type_win='uint32'
+type_enum='uint16'
+
+# === DBus methods ===
+
+# List all window ID compton manages (except destroyed ones)
+dbus-send --print-reply --dest="$service" "$object" "${interface}.list_win"
+
+# Ensure we are tracking focus
+dbus-send --print-reply --dest="$service" "$object" "${interface}.opts_set" string:track_focus boolean:true
+
+# Get window ID of currently focused window
+focused=$(dbus-send --print-reply --dest="$service" "$object" "${interface}.find_win" string:focused | $SED -n 's/^[[:space:]]*'${type_win}'[[:space:]]*\([[:digit:]]*\).*/\1/p')
+
+if [ -n "$focused" ]; then
+  # Set the window to have selected strength
+  dbus-send --print-reply --dest="$service" "$object" "${interface}.win_set" "${type_win}:${focused}" string:the_blur_strength "${type_enum}:$strength"
+else
+  echo "Cannot find focused window."
+fi

src/common.h

@@ -2549,6 +2549,9 @@ win_set_focused_force(session_t *ps, win *w, switch_t val);
 void
 win_set_invert_color_force(session_t *ps, win *w, switch_t val);
 
+void
+win_set_the_blur_strength(session_t *ps, win *w, switch_t val);
+
 void
 opts_init_track_focus(session_t *ps);
 

src/compton.c

@@ -3837,6 +3837,14 @@ win_set_focused_force(session_t *ps, win *w, switch_t val) {
   }
 }
 
+/**
+ * Set blur_strength
+ */
+void
+win_set_the_blur_strength(session_t *ps, win *w, switch_t val) {
+  parse_blur_strength(ps, val);
+}
+
 /**
  * Set w->invert_color_force of a window.
  */

src/dbus.c

@@ -1,3 +1,4 @@
+
 /*
  * Compton - a compositor for X11
  *
@@ -819,6 +820,14 @@ cdbus_process_win_set(session_t *ps, DBusMessage *msg) {
     win_set_invert_color_force(ps, w, val);
     goto cdbus_process_win_set_success;
   }
+
+  if (!strcmp("the_blur_strength", target)) {
+    cdbus_enum_t val = UNSET;
+    if (!cdbus_msg_get_arg(msg, 2, CDBUS_TYPE_ENUM, &val))
+      return false;
+    win_set_the_blur_strength(ps, w, val);
+    goto cdbus_process_win_set_success;
+  }
 #undef cdbus_m_win_set_do
 
   printf_errf("(): " CDBUS_ERROR_BADTGT_S, target);