KWin Rules: Difference between revisions

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This page will define the different settings and the attributes.  For the impatient folks, working examples will be listed.  Whenever possible, screen shots will be used to show example settings.
This page will define the different settings and the attributes.  For the impatient folks, working examples will be listed.  Whenever possible, screen shots will be used to show example settings.
==Rule Evaluation ==
KWin evaluates the rules when an application starts and after editing rules.  Any matching rule's attribute(s) override the application's corresponding attribute(s).
===Order of Evaluation===
In the `Window Rules' window, the rules are listed in the order in which they are processed.  The rule at the top of the list is processed first, followed by the next rule until the end of the list is reached.
===Rule Precedence===
In the event two rules match a window and affect the same attribute, the first rule in the list takes precedence.
====Customizing an Application and its Windows====
Given the above, one may customize an application's windows by creating several rules.
The first rules would define more restrictive criteria to tailor attributes to, specific <menuchoice>Window types</menuchoice> and/or <menuchoice>Window roles</menuchoice> within the <menuchoice>Window class (application)</menuchoice>.
The final rule, the catch-basin, would apply the default attributes desired should none of the preceding rules qualify.


==KWin Rule Editor==
==KWin Rule Editor==
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* <menuchoice>Configure Desktop -> Window Behavior -> Window Rules</menuchoice>
* <menuchoice>Configure Desktop -> Window Behavior -> Window Rules</menuchoice>


==KWin Rule Editor Anatomy==
===Anatomy===


[[Image:kwin-rule-editor.png|250px|center]]
[[Image:kwin-rule-editor.png|250px|center]]
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As the name implies, <menuchoice>Window matching</menuchoice> is used to specify criteria to match one or more windows.  The other three tabs are used to alter the window's characteristics.
As the name implies, <menuchoice>Window matching</menuchoice> is used to specify criteria to match one or more windows.  The other three tabs are used to alter the window's characteristics.
===Rule Evaluation===
KWin evaluates the rules when an application starts and after editing rules.  Any matching rule's attribute(s) override the application's corresponding attribute(s).
====Order of Evaluation====
In the `Window Rules' window, the rules are listed in the order in which they are processed.  The rule at the top of the list is processed first, followed by the next rule until the end of the list is reached.
====Rule Precedence====
In the event two rules match a window and affect the same attribute, the first rule in the list takes precedence.
====Rule Catch-basins for Applications====
One may customize an application's windows by creating several rules.  The first rules defined have more restrictive matching criteria and the final rule is used as a catch-basin:  if no other rule matches for the window, use this rule.
'''Redo the above ... awkward'''


==Examples==
==Examples==

Revision as of 17:35, 19 December 2011

Overview

KWin allows the end-user to define rules to alter the behavior of applications.

Tip
Plasmoids, Workspaces can also be affected.


For example, when an application is started, it can be forced to always run on Virtual Desktop #2. Or a defect in an application can be worked-around by using a rule to, say, always force the window on top of all others.

This page will define the different settings and the attributes. For the impatient folks, working examples will be listed. Whenever possible, screen shots will be used to show example settings.

KWin Rule Editor

Invoking the Editor

There are several ways one can invoke the Rules editor. Below are a couple:

  • Right-click on the title-bar of any window, choosing Configure Window Behavior ... and in the Configure window, selecting Window Rules or
  • Configure Desktop -> Window Behavior -> Window Rules

Anatomy

The editor is comprised of four tabs:

  1. Window matching
  2. Size & Position
  3. Arrangement & Access
  4. Appearance & Fixes

As the name implies, Window matching is used to specify criteria to match one or more windows. The other three tabs are used to alter the window's characteristics.

Rule Evaluation

KWin evaluates the rules when an application starts and after editing rules. Any matching rule's attribute(s) override the application's corresponding attribute(s).

Order of Evaluation

In the `Window Rules' window, the rules are listed in the order in which they are processed. The rule at the top of the list is processed first, followed by the next rule until the end of the list is reached.

Rule Precedence

In the event two rules match a window and affect the same attribute, the first rule in the list takes precedence.

Rule Catch-basins for Applications

One may customize an application's windows by creating several rules. The first rules defined have more restrictive matching criteria and the final rule is used as a catch-basin: if no other rule matches for the window, use this rule.

Redo the above ... awkward

Examples

Force a Window on a Desktop

Force a Window on all Desktops

Suppress a Window showing on Pager

Force a Window to the Top

Good for knotes

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