.. -*- coding: utf-8 -*-

====

 X.

====

.. contents::

Standard.

=========

See

  http://www.tronche.com/gui/x/icccm/

Getting info about X window and X-related applications data.

============================================================

Look for system registered resources::

  $ listres

  $ listres -all

  $ appres XTerm

  $ appres -name htop   # for xterm with running bash inside

Look for X resources of running applications::

  $ xprop -root

  $ xprop -name bash    # for xterm with running bash inside

Making screenshort.

===================

::

  $ sudo apt-get install scrot

  $ scrot -d <sec> <file>

or::

  $ sudo apt-get install imagemagic

  $ import -quality 100 -pause <sec> -silent <file>

Input method.

=============

Input method by setxkbmap.

--------------------------

::

  $ setxkbmap ru

  $ setxkbmap -rules xorg -model pc104 -layout "us,ru" -option "grp:rwin_toggle,grp_led:scroll" -variant ",winkeys"

Input method from xorg.conf.

----------------------------

::

  Section "InputDevice"

      Identifier     "Keyboard0"

      Driver         "kbd"

      Option         "XkbModel" "pc105"

      Option         "XkbLayout" "us,ru"

      Option         "XkbVariant" ",winkeys"

      Option         "XkbOptions" "grp:rwin_switch,grp_led:scroll"

  EndSection

.Xdefaults

==========

The syntax of an Xdefaults file is as follows::

  [client. | *][{restriction.} | *]resource: value

where:

  client

                The name of the application, some program allow change it by

                '-name' option. This element is optional (can be substituated

                with wildcard).

  restriction

                Class names or name of specific class instance. The classes

                names conventionally start with an upper-case letter.

  resource

                The name of the resource whose value is to be changed.

                Resources are typically lowercase with uppercase

                concatenation.

  value

                The actual value of the resource.

  delimiters

                A period (.) is used to signify each step down into the

                hierarchy. A colon (:) is used to separate the resource

                declaration from the actual value.

Use xprop utility to find classes and resources used by application.

To reread your .Xresources file, and throw away your old resources::

  $ xrdb ~/.Xdefaults

To reread your .Xresources file, and keep your old resources::

 $ xrdb -merge ~/.Xdefaults

Example::

  *foreground: yellow

  XClock*foreground: pink

  Xman*topBox*foreground: blue

String value type.

------------------

This can be path specification like '/usr/bin/firefox'.

Colors value type.

------------------

For color names see '/usr/lib/X11/rgb.txt'. Also you can use hex

representation #ffffff.

Font value type.

----------------

You can use either a full name, a wildcarded specification, or a font alias::

  XTerm*Font: -adobe-courier-bold-r-normal--14-140-75-75-m-90-iso8859-1

  XTerm*Font: *courier-bold-r*140*

  XTerm*Font: 7x14

Geometry value type.

--------------------

  XCalc*geometry: 120x120-0-0

  XClock*geometry: -50+100

Cursor names value type.

------------------------

Cursor resources require the name of the file in /usr/include/X11/bitmaps that

contains the cursor you want to use.

  ScoTerm*pointerShape: gumby

Pixmaps value type.

-------------------

Pixmaps are patterns, like bitmaps, that are used to texture or color an area

on your display. Pixmap resources are specified like cursors or bitmaps.

Numebers value type.

--------------------

  XLogo*borderWidth: 10

Boolean value type.

-------------------

Some resources require a boolean value, such as 'true' or 'false', 'yes' or

'no', or 'on' or 'off'.

Wildcard matching.

------------------

The asterisk can be used as a wildcard, making it easy to write a single rule

that can be applied to many different applications or elements.