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- hmi-controller.so - introduces hmi-controller.so The library is used to manage layout of surfaces/layers. Layout change is triggered by ivi-hmi-controller protocol, ivi-hmi-controller.xml. A reference how to use the protocol, see ivi-shell-user-interface.c. In-Vehicle Infotainment system usually manages properties of surfaces/layers by only a central component which decide where surfaces/layers shall be. This is differenct use case from desktop style; each application can request property of its window via xdg-shell protocol, like fullscreen and set its to top level. In-Vehicle Infortainment system doesn't allow each application to chagen them from its application because of safty reasons. The concept of layer is simillar with a use case of cursor layer of Destop. For In-Vehicle Infortainment system, it is extended to all applications. For example, rearview camera application is assigned to a layer to group several surfaces, e.g. captured image and drawing lines separately. Central manaegr can control property of the layer of rearview camera. This reference show examples to implement the central component as a module of weston. Default Scene graph of UI is defined in hmi_controller_create. It consists of - In the bottom, a base layer to group surfaces of background, panel, and buttons - Next, a application layer to show application surfaces. - Workspace background layer to show a surface of background image. - Workspace layer to show launcher to launch application with icons. Paths to binary and icon are defined in weston.ini. The width of this layer is longer than the size of screen because a workspace has several pages and is controlled by motion of input. Signed-off-by: Nobuhiko Tanibata <NOBUHIKO_TANIBATA@xddp.denso.co.jp> Acked-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk> |
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| .. | ||
| hmi-controller.c | ||
| ivi-layout-export.h | ||
| ivi-layout-private.h | ||
| ivi-layout-transition.c | ||
| ivi-layout.c | ||
| ivi-shell.c | ||
| ivi-shell.h | ||
| README | ||
In-vehicle infotainment (information and entertainment) graphical environment support modules for Weston IVI-shell is an alternative shell for Weston, a Wayland display server. Window management and application interaction with the display server are very different to that of a normal desktop, which is why this is a separate shell and not an extension to the desktop-shell suite with xdg_shell. As such, applications need to be specifically written to use IVI-shell. IVI-shell contains two main features: - Common layout library for surface, which allow ivi-shell developer to develop own shell, linking Common layout library. For the time being, the library refers Genivi ilm interface. http://projects.genivi.org/wayland-ivi-extension/ - Extension protocal; ivi-application to tie wl_surface and a given ID. With this ID, shell can identify which wl_surface is drawn by which application. In in-vehicle infortainment system, a shell has to update a property of a wl_surface. E.g. there may be a use case when vehicle starts to move, the wl_surface drawn by Car navigation is expected to move top of surfaces. The actual software components delivered with Weston are: - ivi-application.xml: Wayland protocol extension for IVI-applications; the public shell protocol (the same concept as xdg_shell). Implemented by ivi-shell.so. - ivi-shell.so: A Weston shell module that implements ivi-application.xml interfaces. Loads ivi-layout.so. - ivi-layout.so: Implements the IVI window management concepts: Screen, Layer, Surface, groups of Layers, groups of Surfaces, see: http://projects.genivi.org/ivi-layer-management/node/13 Offers a stable API for writing IVI-controller modules like hmi-controller.so against the IVI concepts. In other words, it offers an API to write IVI window manager modules. - hmi-controller.so: A sample implementation of an IVI-controller module, usually replaced by IVI system vendors. Uses ivi-layout.so to perform essentially window manager tasks. This implementation keeps all window management inside the module, while IVI-systems may use another module that exposes all window management via Wayland or other protocol for an external process to control: http://git.projects.genivi.org/?p=wayland-ivi-extension.git;a=summary - ivi-hmi-controller.xml: Wayland protocol extension for IVI display control; the private shell protocol for weston-ivi-shell-user-interface client (the same concept as desktop-shell.xml). Implemented by hmi-controller.so, and usually replaced by IVI system vendors. - weston-ivi-shell-user-interface: A sample implementation of an IVI shell helper client, usually replaced by IVI system vendors. A helper client for basic display content, similar to weston-desktop-shell. How to compile: same as weston. To disable, use option: --disable-ivi-shell for configure. How to configure weston.ini: reference ini file will be generated in <build_dir>/ivi-shell. How to run: same as weston. exec weston. How to use UI: http://lists.freedesktop.org/archives/wayland-devel/attachments/20140625/abbfc064/attachment-0001.png