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KWin is a window manager for the X Window System and is currently in the process of becoming a Wayland compositor3 It is released as part of KDE Plasma 5 for which it is the default window manager KWin can also be used on its own or with other desktop environments

KWin 5x depends on KDE Frameworks 5 KWin 4x depended on KDE Platform 4, which was a monolithic library KWin 3x and earlier depended on KDELibs

KWin can be configured by scripting using QML or QtScript, both of which are based on ECMAScript4


  • 1 History
  • 2 Look and feel
  • 3 Compositing
    • 31 Included effects
      • 311 Accessibility
      • 312 Appearance
      • 313 Candy
      • 314 Focus
      • 315 Tools
      • 316 Window management
  • 4 See also
  • 5 References
  • 6 External links


Name Version Details
KWM 10
KWin 20 Extended support for themes and window effects
30 Improved support for the extended ICCCM standards from freedesktoporg
40 Compositing support and Compiz-like effects
44 02/2010 Maximizing and tiling by snapping to the screen-edges, grouping and tabbing5
45 Tiling6 removed in version 410
49 Incompatible API change7
411 Last release based on KDE Platform 4 Experimental Wayland support8
50 First release based on KDE Frameworks 5 and Qt 59

Look and feeledit

There are many window decorations for KWin, including the current default Breeze shown below, the previous default Oxygen, Microsoft Windows-like Redmond, and Keramik

KWin with the Breeze window decoration


Currently available compositing backends include XRender, OpenGL 12, OpenGL 20, OpenGL 3110 and OpenGL ES 2011

Included effectsedit

Screenshot showing the cover switch effect in KWin for KDE 41

As of KDE 43 the following effects are built-in:


Name Description
Invert Inverts the color of the desktop and windows
Looking glass A screen magnifier that looks like a fish eye lens
Magnifier Magnify the section of the screen that is near the mouse cursor
Sharpen Makes the entire desktop look sharper
Snap Helper Helps locate the centre of the screen when moving a window
Track mouse Display a mouse cursor locating effect when activated
Zoom Magnify the entire desktop


Name Description
Explosion Make windows explode when they are closed
Fade Make windows smoothly fade in and out when they are shown or hidden
Fade Desktop Fade between virtual desktops when switching between them
Fall apart Close windows fall into pieces
Highlight Windows Highlight the appropriate window when hovering over taskbar entries
Login Smoothly fade to the desktop when logging in
Logout Desaturate the desktop when displaying the logout dialog
Magic Lamp Simulate a magic lamp when minimizing windows
Minimize animation Animate the minimizing of windows
Mouse mark Allows you to draw lines over your desktop
Scale In Animate the appearance of windows
Sheet Make modal dialogues smoothly fly in and out when shown or hidden
Slide Slide windows across the screen when switching virtual desktops
Sliding popups Sliding animation for Plasma Popups
Taskbar Thumbnails Display window thumbnails when hovering over taskbar entries
Thumbnail aside Display window thumbnails on the edge of the screen
Translucency Make windows translucent under different conditions
Wobbly windows Deform windows while they are moving


Name Description
Snow Simulate snow falling on the desktop


Name Description
Dialog parent Darkens the parent windows of the currently active dialogue
Dim Inactive Darken inactive windows
Dim screen for administrator mode Darkens the entire screen when requesting root privileges
Slide Back Slide back windows losing focus


Name Description
Show FPS Show kwins performance in the corner of the screen
Show Paint Highlight areas of the desktop that have been recently updated

Window managementedit

Name Description
Box switch Display thumbnails of windows in the alt+tab window switcher
Cover switch Apply a Cover Flow-like effect to the alt+tab window switcher
Desktop cube Present each desktop as the facet of a cube
Desktop Cube Animation Animate desktop switching with a cube
Desktop grid Zoom out so all desktops are displayed side-by-side in a grid
Flip switch Flip through windows that are in a stack for the alt+tab window switcher
Present windows Zoom out until open windows can be displayed side by side
Resize Window Effect to outline geometry while resizing a window

See alsoedit

  • Free software portal
  • Comparison of X window managers


  1. ^ "KDE Plasma 585 Release" KDE 
  2. ^ "KDE at 20: Plasma 58 LTS Beta Here for the Long Term" KDE 
  3. ^ "KDE Ships Plasma 55 Release" KDE 2015-12-08 
  4. ^ "Development/Tutorials/KWin/Scripting" Retrieved June 19, 2013 
  5. ^ "KDE SC 440 Caikaku Release Announcement" Retrieved June 13, 2010 
  6. ^ "KDE Software Compilation 45 Beta2 Release Announcement" Retrieved June 13, 2010 
  7. ^ "Scripting Update Notes" March 6, 2012 Retrieved June 19, 2013 
  8. ^ "Plasma Workspaces 411 Continues to Refine User Experience" August 14, 2013 Retrieved July 1, 2015 
  9. ^ "New Plasma brings a cleaner interface on top of a new graphics stack" July 15, 2014 Retrieved July 1, 2015 
  10. ^ Martin Gräßlin June 18, 2013 "What we did in KWin 411" 
  11. ^ Martin Gräßlin February 18, 2011 "KWin Embraces New Platforms with OpenGL ES 20 Support" KDE KDENEWS Retrieved April 9, 2011 

External linksedit

  • KWin release notes for KDE40
  • Decorations for KWin 4

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KWin Information about


  • user icon

    KWin beatiful post thanks!


KWin viewing the topic.
KWin what, KWin who, KWin explanation

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