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====== Graphics: Use cases and Requirement ======

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===== Contributors =====
Wataru Natsume
Manuel Bachmann

===== Use cases =====
^ No      ^ name ^ Description          ^ Recommended solution (if you have) ^ Proposer ^
| 0 | Input| Car Navigation needs to receive switch event of destination even if it is off-screen  |   [[http://wiki.projects.genivi.org/index.php/Wayland_IVI_Extension_Design_ivi_input]] which can enable notification of key event to send off-screen surface  |
| 1| Input | Event of Steering switch is notified to multiple contents/applications | Wayland_IVI_Extension: ivi_input | Nobuhiko Tanibata |
| 2| Input | Event of multiple input device, steering switch, Remote control in Rear sheet entertainment are distributed to contents/applications | Wayland_IVI_Extension: ivi_input | Nobuhiko Tanibata |
| 3| Animation| A content is animated in an user window | Wayland_IVI_Extension: ivi_share| Nobuhiko Tanibata |
| 4| Animation| A content is animated inter Headup display to Center display | Wayland_IVI_Extension to be extened| Nobuhiko Tanibata |
| 5| surface/Layer/screen| A part of content is clipped and then viewed in another screen | Wayland_IVI_Extension | Nobuhiko Tanibata |
| 6| surface/Layer/screen| A application content is rotated in portrait/landscape| Wayland_IVI_Extension | Nobuhiko Tanibata |
| 7| surface/Layer/screen| Application contents are synchronized to change next frames | Wayland_IVI_Extension to be extened | Nobuhiko Tanibata |
| 8| surface/Layer/screen| An application contents is captured as a binary to be used for e.g. Icon. | Wayland_IVI_Extension | Nobuhiko Tanibata |
| 9| Input | A application replies feedback to device. e.g. vibration | Wayland_IVI_Extension: ivi_input to be extended | Nobuhiko Tanibata |

===== Requirement =====
^ No      ^ name ^ Description          ^ Recommended solution (if you have) ^ proposer ^
| 1| input | An input device shall be focused on an surface even if the surface is not visible| Wayland_IVI_Extension: ivi_input | Nobuhiko Tanibata|
| 2| input | Multiple input devices shall be managed to tie surfaces | Wayland_IVI_Extension: ivi_input | Nobuhiko Tanibata
| 3| input | A input framework shall be able to notify feedback, e.g. vibration to input device | libinput or Wayland-IVI-Extension; ivi-input| Nobuhiko Tanibata|
| 4| surface/Layer/screen| surface/layer/screen shall be managed by hierarchy|　Wayland_IVI_Extension | Nobuhiko Tanibata|
| 5| surface/Layer/screen| surface or Layer shall be able to belong to several Layers or several screens | Wayland_IVI_Extension to be extended | Nobuhiko Tanibata|
| 6| surface/Layer/screen | surface/Layer shall be able to be positioned or rotated |Wayland_IVI_Extension | Nobuhiko Tanibata|
| 7| surface/Layer/screen | surface/Layer shall be able to be clipped | Wayland_IVI_Extension | Nobuhiko Tanibata|
| 8| animation | Layer shall be able to animated inter screens |Wayland_IVI_Extension to be extended | Nobuhiko Tanibata|
| 9| animation | surface shall be able to animated in layer|Wayland_IVI_Extension | Nobuhiko Tanibata|
| 10| surfaces| surfaces shall be able to be synchronized to be composite at the same time, eglswap Synchronization  |Wayland_IVI_Extension to be extended | Nobuhiko Tanibata|
| 11| surfaces| surface/screen shall be able to be captured  |Wayland_IVI_Extension to be extended | Nobuhiko Tanibata|
| 11| buffer share | A surface shall be able to be handled as graphic memory and shared by another process for the nested compositor by application itself.|Wayland_IVI_Extension: ivi-share| Nobuhiko Tanibata|
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