Signed-off-by: Nobuhiko Tanibata <NOBUHIKO_TANIBATA@xddp.denso.co.jp> Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>dev
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In-vehicle infotainment (information and entertainment) |
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graphical environment support modules for Weston |
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IVI-shell is an alternative shell for Weston, a Wayland display server. |
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Window management and application interaction with the display server |
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are very different to that of a normal desktop, which is why this is |
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a separate shell and not an extension to the desktop-shell suite with |
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xdg_shell. As such, applications need to be specifically written to use |
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IVI-shell. |
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IVI-shell contains two main features: |
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- Common layout library for surface, which allow ivi-shell developer |
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to develop own shell, linking Common layout library. |
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For the time being, the library refers Genivi ilm interface. |
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http://projects.genivi.org/wayland-ivi-extension/ |
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- Extension protocal; ivi-application to tie wl_surface and a given ID. |
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With this ID, shell can identify which wl_surface is drawn by which |
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application. In in-vehicle infortainment system, a shell has to update |
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a property of a wl_surface. E.g. there may be a use case when vehicle |
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starts to move, the wl_surface drawn by Car navigation is expected to |
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move top of surfaces. |
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The actual software components delivered with Weston are: |
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- ivi-application.xml: |
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Wayland protocol extension for IVI-applications; the public |
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shell protocol (the same concept as xdg_shell). |
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Implemented by ivi-shell.so. |
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|
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- ivi-shell.so: |
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A Weston shell module that implements ivi-application.xml interfaces. |
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Loads ivi-layout.so. |
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- ivi-layout.so: |
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Implements the IVI window management concepts: Screen, Layer, |
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Surface, groups of Layers, groups of Surfaces, see: |
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http://projects.genivi.org/ivi-layer-management/node/13 |
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Offers a stable API for writing IVI-controller modules like |
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hmi-controller.so against the IVI concepts. In other words, |
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it offers an API to write IVI window manager modules. |
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|
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- hmi-controller.so: |
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A sample implementation of an IVI-controller module, usually |
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replaced by IVI system vendors. |
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Uses ivi-layout.so to perform essentially window manager tasks. |
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This implementation keeps all window management inside the module, |
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while IVI-systems may use another module that exposes all window |
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management via Wayland or other protocol for an external process |
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to control: |
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http://git.projects.genivi.org/?p=wayland-ivi-extension.git;a=summary |
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|
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- ivi-hmi-controller.xml: |
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Wayland protocol extension for IVI display control; the private |
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shell protocol for weston-ivi-shell-user-interface client |
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(the same concept as desktop-shell.xml). |
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Implemented by hmi-controller.so, and usually replaced by IVI |
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system vendors. |
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|
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- weston-ivi-shell-user-interface: |
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A sample implementation of an IVI shell helper client, usually |
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replaced by IVI system vendors. |
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A helper client for basic display content, similar to |
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weston-desktop-shell. |
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How to compile: |
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same as weston. To disable, use option: --disable-ivi-shell for configure. |
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How to configure weston.ini: |
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reference ini file will be generated in <build_dir>/ivi-shell. |
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How to run: |
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same as weston. exec weston. |
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How to use UI: |
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http://lists.freedesktop.org/archives/wayland-devel/attachments/20140625/abbfc064/attachment-0001.png |
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