Qt Wayland Compositor

Qt Wayland Compositor 是提供用於開發自定義顯示服務器，方便且強大的 QML 和 C++ API 模塊，基於 Wayland 協議。顯示服務器 (通常稱為 Compositor 閤成器) 顯示來自支持 Wayland 協議的客戶端應用程序的內容。

Wayland's design philosophy is to keep the core protocol simple and minimal. Developers can then expand on this core protocol with use-case-specific extensions. Qt Wayland Compositor supports many common extensions by default, and also has APIs to enable the creation of new, custom extensions.

Typically, a compositor written with Qt Wayland Compositor becomes a subsystem inside a larger application manager process. Qt Wayland Compositor provides the APIs to communicate with clients and display their content on the screen. The QML APIs contain high-level APIs that easily integrate with the rest of Qt, enabling convenient animations, effects, and UI through Qt Quick. There are also C++ APIs available - if you need more low-level access.

An application manager would typically implement additional features such as application life cycle, virtual keyboard input, security, and Inter-Process Communication (IPC). Qt provides the APIs that can be used to develop the remaining parts of an application manager in other modules. The Qt Automotive Suite 提供 Qt Application Manager , which is a complete application manager that includes a compositor developed using Qt Wayland Compositor.

有關 Wayland 的更多信息，見 Wayland 和 Qt .

Qt Wayland Compositor 的特徵

The Qt Wayland Compositor includes features necessary to create a compositor:

A QML API to display and manipulate client content, fully integrated with all the features in Qt Quick.
A C++ API for low-level access and control.
Support for common extensions, including XDG Shell and IVI Application.
APIs to easily expand the support for custom extensions.

環境變量和命令行自變量

The Qt Wayland Compositor recognizes the following environment variables and command-line arguments:

環境變量：
- QT_WAYLAND_HARDWARE_INTEGRATION Selects the hardware integration plugin to use.
- QT_WAYLAND_CLIENT_BUFFER_INTEGRATION Selects the client buffer integration plugin to use.
- QT_WAYLAND_SERVER_BUFFER_INTEGRATION Selects the server integration plugin to use.
命令行自變量：
- --wayland-socket-name Overrides the default socket name used for communicating with clients.

範例

查看 Qt Wayland Compositor 範例 to learn how these APIs can be used to write custom compositors.

API 參考

可以使用 Qt Wayland Compositor，從 C++ 或 QML：

許可和歸屬

Qt Wayland Compositor 和 Qt Wayland 集成插件在商業許可下是可用的來自 Qt 公司 .

此外，Qt Wayland Compositor 是可用的在 GNU GPL (一般公共許可) 第 3 版，而 Qt Wayland 集成插件可用於 GNU LGPL (次一般公共許可) 第 3 版或 GNU GPL (一般公共許可) 第 2 版 .

見 Qt 許可進一步瞭解細節。

Qt Wayland Compositor 和 Qt Wayland 集成插件所用協議定義遵循以下準許許可：

Wayland EGLStream Controller Protocol, version 1.1.1	MIT 許可
Wayland Fullscreen Shell Protocol, version unstable v1	MIT 許可
Wayland IVI Extension Protocol, version 1.9.1	MIT 許可
Wayland Linux Dmabuf Unstable V1 Protocol, version unstable v1, version 3	MIT 許可
Wayland Primary Selection Protocol, version 1	MIT 許可
Wayland 協議第 1.16.0 版	MIT 許可
Wayland Scaler 協議第 2 版	MIT 許可
Wayland Tablet Protocol, version unstable v2, version 1	MIT 許可
Wayland Text Input Protocol, version unstable v2	HPND 許可
Wayland Viewporter Protocol, version 1	MIT 許可
Wayland XDG Output Protocol, version unstable v1, version 3	MIT 許可
Wayland XDG Shell Protocol, version 1.18	MIT 許可
Wayland xdg-decoration Protocol, version unstable v1, version 1	MIT 許可