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picom/dbus-examples/cdbus-driver.sh
Richard Grenville 58c0ecec40 Feature #80: D-Bus support
- Add D-Bus support. Currently 7 methods are available: "reset" (same as
  SIGUSR1), "list_win" (list the windows compton manages), "win_get"
  (get a property of the window), "win_set" (set a property of the
  window), "find_win" (find window based on client window / focus),
  "opts_get" (get the value of a compton option), and "opts_set" (set
  the value of a compton option), together with 4 signals: "win_added",
  "win_destroyed", "win_mapped", "win_unmapped".

- D-Bus support depends on libdbus.

- As there are many items and my time is tight, no much tests are done.
  Bugs to be expected.

- Create a new header file `common.h` that contains shared content.

- Fix some bugs in timeout handling.

- Update file headers in all source files.

- Re-enable --unredir-if-possible on multi-screen set-ups, as the user
  could turn if off manually anyway.

- Check if the window is mapped in `repair_win()`.

- Add ps->track_atom_lst and its handlers, to prepare for the new
  condition format.

- Known issue 1: "win_get", "win_set", "opts_get", "opts_set" support a
  very limited number of targets only. New ones will be added gradually.

- Known issue 2: Accidental drop of D-Bus connection is not handled.

- Known issue 3: Introspection does not reveal all available methods,
  because some methods have unpredictable prototypes. Still hesitating
  about what to do...

- Known issue 4: Error handling is not finished yet. Compton does not
  always reply with the correct error message (but it does print out the
  correct error message, usually).
2013-01-19 20:20:27 +08:00

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#!/bin/sh
# === 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" "${interface}.list_win"
# Get window ID of currently focused window
focused=$(dbus-send --print-reply --dest="$service" "$object" "${interface}.find_win" string:focused | sed -n 's/^[[:space:]]*'${type_win}'\s*\([[:digit:]]*\).*/\1/p')
if [ -n "$focused" ]; then
# Get invert_color_force property of the window
dbus-send --print-reply --dest="$service" "$object" "${interface}.win_get" "${type_win}:${focused}" string:invert_color_force
# Set the window to have inverted color
dbus-send --print-reply --dest="$service" "$object" "${interface}.win_set" "${type_win}:${focused}" string:invert_color_force "${type_enum}:1"
else
echo "Cannot find focused window."
fi
# Set the clear_shadow setting to true
dbus-send --print-reply --dest="$service" "$object" "${interface}.opts_set" string:clear_shadow boolean:true
# Get the clear_shadow setting
dbus-send --print-reply --dest="$service" "$object" "${interface}.opts_get" string:clear_shadow
# Reset compton
sleep 3
dbus-send --print-reply --dest="$service" "$object" "${interface}.reset"