My KWIN fork where I work on features like per-output virtual desktops
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Vlad Zahorodnii 00ae7d3893 effects/slide: Use mass-spring-damper model for animation
If you lift fingers but not swipe them enough to switch to another
virtual desktop, the slide effect will play an animation to move from
the current position in the virtual desktop grid to the current desktop.

However, that animation doesn't feel right, there's something missing.
The slide effect uses a TimeLine to animate switching between virtual
desktops, it's great if the amount of sliding is constant.

This change makes the slide effect use the mass-spring-damper model to
simulate the motion of a spring in order to animate switching between
virtual desktops.

The mass-spring-damper equation is integrated using RK4. If the delta
interval is not multiple of the integration step precisely, the
SpringMotion will perform integration as many times as the integration
step fits into the delta. The leftover will be used for LERP between the
previous and the next integration results.

With the spring animation, the slide animation feels more natural when
you lift fingers. If you switch between virtual desktops without using a
gesture, the slide animation should look almost the same as if it were
implemented with the TimeLine.
2022-05-05 11:30:51 +00:00
autotests Realtime screen edges gestures for scripted effects 2022-05-03 13:43:38 +00:00
cmake/modules Don't put a trailing dot in set_package_properties 2021-10-30 01:51:40 +03:00
data Run clang-tidy with -checks=readability-braces-around-statements fixit 2022-03-28 10:54:11 +00:00
doc doc: modernise HACKING -> CONTRIBUTING guidelines and information 2021-08-31 22:10:58 +00:00
kconf_update dynamically load effects that support edge activation 2022-05-03 16:54:36 +00:00
LICENSES
src effects/slide: Use mass-spring-damper model for animation 2022-05-05 11:30:51 +00:00
tests Provide an xdgactivationtest 2022-04-27 23:14:29 +00:00
.clang-format Run clang-format 2022-03-25 13:25:15 +02:00
.gitignore Run clang-format 2022-03-25 13:25:15 +02:00
.gitlab-ci.yml gitlab-ci: Build decorations in minimal CI run 2022-03-16 11:01:43 +01:00
.kde-ci.yml CI: Enable ccache 2022-04-23 14:29:40 -03:00
CMakeLists.txt color management: refactor and move to its own directory 2022-04-26 16:20:47 +00:00
CONTRIBUTING.md doc: modernise HACKING -> CONTRIBUTING guidelines and information 2021-08-31 22:10:58 +00:00
KWinDBusInterfaceConfig.cmake.in Expose org.kde.kwin.ColorCorrect.xml dbus file 2022-01-05 01:33:01 +00:00
logo.png
Mainpage.dox
plasma-kwin_wayland.service.in Re-enable systemd managed kwin 2021-12-02 13:25:50 +00:00
plasma-kwin_x11.service.in [systemd] Fix X11 service file 2022-01-20 16:18:48 +00:00
README.md doc: modernise HACKING -> CONTRIBUTING guidelines and information 2021-08-31 22:10:58 +00:00

KWin

KWin is an easy to use, but flexible, composited Window Manager for Xorg windowing systems (Wayland, X11) on Linux. Its primary usage is in conjunction with a Desktop Shell (e.g. KDE Plasma Desktop). KWin is designed to go out of the way; users should not notice that they use a window manager at all. Nevertheless KWin provides a steep learning curve for advanced features, which are available, if they do not conflict with the primary mission. KWin does not have a dedicated targeted user group, but follows the targeted user group of the Desktop Shell using KWin as it's window manager.

KWin is not...

  • a standalone window manager (c.f. openbox, i3) and does not provide any functionality belonging to a Desktop Shell.
  • a replacement for window managers designed for use with a specific Desktop Shell (e.g. GNOME Shell)
  • a minimalistic window manager
  • designed for use without compositing or for X11 network transparency, though both are possible.

Contributing to KWin

Please refer to the contributing document for everything you need to know to get started contributing to KWin.

Contacting KWin development team

  • mailing list: kwin@kde.org
  • IRC: #kde-kwin on irc.libera.chat

Support

Application Developer

If you are an application developer having questions regarding windowing systems (either X11 or Wayland) please do not hesitate to contact us. Preferable through our mailing list. Ideally subscribe to the mailing list, so that your mail doesn't get stuck in the moderation queue.

End user

Please contact the support channels of your Linux distribution for user support. The KWin development team does not provide end user support.

Reporting bugs

Please use KDE's bugtracker and report for product KWin.

Guidelines for new features

A new Feature can only be added to KWin if:

  • it does not violate the primary missions as stated at the start of this document
  • it does not introduce instabilities
  • it is maintained, that is bugs are fixed in a timely manner (second next minor release) if it is not a corner case.
  • it works together with all existing features
  • it supports both single and multi screen (xrandr)
  • it adds a significant advantage
  • it is feature complete, that is supports at least all useful features from competitive implementations
  • it is not a special case for a small user group
  • it does not increase code complexity significantly
  • it does not affect KWin's license (GPLv2+)

All new added features are under probation, that is if any of the non-functional requirements as listed above do not hold true in the next two feature releases, the added feature will be removed again.

The same non functional requirements hold true for any kind of plugins (effects, scripts, etc.). It is suggested to use scripted plugins and distribute them separately.