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openbox fork - make it a bit more like ryudo

doc/python/pointer.txt (raw)

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input.Pointer

----

This document describes the 'Pointer' class, exposed by Openbox's 'input'
module to its python scripts.

All pointer events which will be generated because of the Pointer class can
be caught from the hooks.pointer hook.

----

Terminology

----

Context -- A context is a string describing a part of a window or screen in
	   which an event can occur. Contexts are used for grabbing and
	   tracking pointer events. A list of possible contexts are exposed by
	   the engine through the contexts() method. The standard list of
	   contexts are:
	   * "none" - no context associated.
	   * "root" - the root window.
	   * "frame" - the client's entire frame. Note: when a button is
		       grabbed in the "frame" context, it will not get passed
		       through to the client.
	   * "client" - client's window.
	   * "titlebar" - a client's titlebar.
	   * "handle" - a client's handle.
	   * "tlcorner" - the top-left corner of a client's decorations.
	   * "trcorner" - the top-right corner of a client's decorations.
	   * "blcorner" - the bottom-left corner of a client's decorations.
	   * "brcorner" - the bottom-right corner of a client's decorations.
	   * "maximize" - the maximize button in the titlebar.
	   * "close" - the close button in the titlebar.
	   * "iconify" - the iconify button in the titlebar.
	   * "alldesktops" - the all-desktops button in the titlebar.
	   * "icon" - the window icon in the titlebar.

	   An engine may add to this list as it sees fit (most engines will
	   include "close", "maximize", etc. contexts for titlebar buttons).

----

Methods

----

bind(button, context, action, func)

Binds a pointer button for a context and action to a function. See the
Terminology section for a decription and list of common contexts. The button is
a string which defines a modifier and button combination with the format
[Modifier-]...[Button]. Modifiers can be 'mod1', 'mod2', 'mod3', 'mod4',
'mod5', 'control', and 'shift'. The keys on your keyboard that are bound to
each of these modifiers can be found by running 'xmodmap'. The button is the
number of the button. Button numbers can be found by running 'xev', pressing
the button with the pointer over its window, and watching its output. Here
are some examples of valid buttons: 'control-1', '2', 'mod1-shift-5'. The 
action is one of the Action_* constants. The func must have a definition
similar to 'def func(ptrdata, client)'. The arguments passed to the function
are a PointerData object and a Client object (or None). A button and context
may be bound to more than one function.

	button: A string defining the modifiers and button to for which events
		should be generated.

	context: The context in which the button events should be generated.

	action: One of the Action_* constants specifying the action to bind
		the function to.

	func: A function to bind to the button/context.

----

clearBinds()

Removes all bindings that were previously made by bind().

----

grab(func)

Grabs the pointer device, causing all possible pointer events to be sent to
the given function. CAUTION: Be sure when you grab() that you also have an
ungrab() that will execute, or you will not be able to use the pointer device
until you restart Openbox. The func must have a definition similar to
'def func(data)'. The argument passed to the function is a PointerData object.
The pointer cannot be grabbed if it is already grabbed. When a grab is active,
no pointer bindings will fire, everything is sent only to the specified func.

	func: A function to receive all the grabbed pointer events.

----

ungrab()

Ungrabs the pointer. The pointer cannot be ungrabbed if it is not grabbed.

----

Constants

----

Action_Press		a pointer button press
Action_Release		a pointer button release
Action_Click		a pointer button click (press-release)
Action_DoubleClick	a pointer button double-click
Action_Motion		a pointer drag

----

Configuration options (through the config module)

----

double_click_rate

An integer containing the number of milliseconds in which 2 clicks must be
received to cause a double-click event.

----

drag_threshold

An integer containing the number of pixels a drag must go before motion events
start getting generated. Once a drag has begun, the button release will not
count as a click event.