Window Manager

Giriş
Şeklen şöyledir

Display Manager veya Display Server

Açıklaması şöyle

A display manager is a program which provides a graphical user interface at the end of this boot process. It passed the control to Window Manager once you enter your credentials and continue.. Display Manager takes back the control once you log out from an existing session and display the login screen again to switch user or login back.

 

Similar to many desktop environments available, there are several display managers available too. Some are suited to systems that are high on resources while others consume very low resources and are perfectly suited for low-end systems.

Bazı çok kullanılanlar şöyle

- GDM3 display manager

- LightDM display manager
- Ly – Linux display managers
- SDDM

Örnek

Şöyle yaparız

#Ubuntu
$sudo service lightdm stop

#Ubuntu
$sudo service gdm stop

#Kubuntu bunu kullanır
$sudo service sddm stop

Window Manager

Açıklaması şöyle

As shown on the diagram a window manager is an other important element of the desktop environment that is a system software that controls the placement and appearance of windows within a windowing system in a graphical user interface. Most window managers are designed to help provide a desktop environment. They work in conjunction with the underlying graphical system that provides required functionality support for graphics hardware, pointing devices, and a keyboard, and are often written and created using a widget toolkit. KDE uses KWin as a window manager (it has a limited support for Wayland as of 2020), in parallel, Gnome 2 uses Metacity and Gnome 3 uses Mutter as a window manager.

Compositor veya Compositing Window Manager Nedir
Açıklaması şöyle

An other important aspect of a windows manager is the compositor or compositing window manager, which is a window manager that provides applications with an off-screen buffer for each window. The window manager composites the window buffers into an image representing the screen and writes the result into the display memory. Compositing window managers may perform additional processing on buffered windows, applying 2D and 3D animated effects such as blending, fading, scaling, rotation, duplication, bending and contortion, shuffling, blurring, redirecting applications, and translating windows into one of a number of displays and virtual desktops. Computer graphics technology allows for visual effects to be rendered in real time such as drop shadows, live previews, and complex animation. Since the screen is double buffered, it does not flicker during updates. The most commonly used compositing window managers include: Linux, BSD, Hurd and OpenSolaris-Compiz, KWin, Xfwm, Enlightenment and Mutter. each one have its own implementation, for instance KDE's KWin's compositor have many features/settings like animation speed, tearing prevention (vsync), window thumbnails, scaling method and can use OpenGLv2/OpenGLv3 or XRender as a rendering backend along with Xorg. (XRender/Render not to confuse with XRandR/RandR).