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Diffstat (limited to 'unstable/xdg-output/xdg-output-unstable-v1.xml')
| -rw-r--r-- | unstable/xdg-output/xdg-output-unstable-v1.xml | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/unstable/xdg-output/xdg-output-unstable-v1.xml b/unstable/xdg-output/xdg-output-unstable-v1.xml new file mode 100644 index 0000000..0c0c481 --- /dev/null +++ b/unstable/xdg-output/xdg-output-unstable-v1.xml @@ -0,0 +1,161 @@ +<?xml version="1.0" encoding="UTF-8"?> +<protocol name="xdg_output_unstable_v1"> + + <copyright> + Copyright © 2017 Red Hat Inc. + + Permission is hereby granted, free of charge, to any person obtaining a + copy of this software and associated documentation files (the "Software"), + to deal in the Software without restriction, including without limitation + the rights to use, copy, modify, merge, publish, distribute, sublicense, + and/or sell copies of the Software, and to permit persons to whom the + Software is furnished to do so, subject to the following conditions: + + The above copyright notice and this permission notice (including the next + paragraph) shall be included in all copies or substantial portions of the + Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + DEALINGS IN THE SOFTWARE. + </copyright> + + <description summary="Protocol to describe output regions"> + This protocol aims at describing outputs in a way which is more in line + with the concept of an output on desktop oriented systems. + + Some information are more specific to the concept of an output for + a desktop oriented system and may not make sense in other applications, + such as IVI systems for example. + + Typically, the global compositor space on a desktop system is made of + a contiguous or overlapping set of rectangular regions. + + Some of the information provided in this protocol might be identical + to their counterparts already available from wl_output, in which case + the information provided by this protocol should be preferred to their + equivalent in wl_output. The goal is to move the desktop specific + concepts (such as output location within the global compositor space, + the connector name and types, etc.) out of the core wl_output protocol. + + Warning! The protocol described in this file is experimental and + backward incompatible changes may be made. Backward compatible + changes may be added together with the corresponding interface + version bump. + Backward incompatible changes are done by bumping the version + number in the protocol and interface names and resetting the + interface version. Once the protocol is to be declared stable, + the 'z' prefix and the version number in the protocol and + interface names are removed and the interface version number is + reset. + </description> + + <interface name="zxdg_output_manager_v1" version="1"> + <description summary="manage xdg_output objects"> + A global factory interface for xdg_output objects. + </description> + + <request name="destroy" type="destructor"> + <description summary="destroy the xdg_output_manager object"> + Using this request a client can tell the server that it is not + going to use the xdg_output_manager object anymore. + + Any objects already created through this instance are not affected. + </description> + </request> + + <request name="get_xdg_output"> + <description summary="create an xdg output from a wl_output"> + This creates a new xdg_output object for the given wl_output. + </description> + <arg name="id" type="new_id" interface="zxdg_output_v1"/> + <arg name="output" type="object" interface="wl_output"/> + </request> + </interface> + + <interface name="zxdg_output_v1" version="1"> + <description summary="compositor logical output region"> + An xdg_output describes part of the compositor geometry. + + This typically corresponds to a monitor that displays part of the + compositor space. + </description> + + <request name="destroy" type="destructor"> + <description summary="destroy the xdg_output object"> + Using this request a client can tell the server that it is not + going to use the xdg_output object anymore. + </description> + </request> + + <event name="logical_position"> + <description summary="position of the output within the global compositor space"> + The position event describes the location of the wl_output within + the global compositor space. + + The logical_position event is sent after creating an xdg_output + (see xdg_output_manager.get_xdg_output) and whenever the location + of the output changes within the global compositor space. + </description> + <arg name="x" type="int" + summary="x position within the global compositor space"/> + <arg name="y" type="int" + summary="y position within the global compositor space"/> + </event> + + <event name="logical_size"> + <description summary="size of the output in the global compositor space"> + The logical_size event describes the size of the output in the + global compositor space. + + For example, a surface without any buffer scale, transformation + nor rotation set, with the size matching the logical_size will + have the same size as the corresponding output when displayed. + + Most regular Wayland clients should not pay attention to the + logical size and would rather rely on xdg_shell interfaces. + + Some clients such as Xwayland, however, need this to configure + their surfaces in the global compositor space as the compositor + may apply a different scale from what is advertised by the output + scaling property (to achieve fractional scaling, for example). + + For example, for a wl_output mode 3840×2160 and a scale factor 2: + + - A compositor not scaling the surface buffers will advertise a + logical size of 3840×2160, + + - A compositor automatically scaling the surface buffers will + advertise a logical size of 1920×1080, + + - A compositor using a fractional scale of 1.5 will advertise a + logical size to 2560×1620. + + The logical_size event is sent after creating an xdg_output + (see xdg_output_manager.get_xdg_output) and whenever the logical + size of the output changes, either as a result of a change in the + applied scale or because of a change in the corresponding output + mode(see wl_output.mode) or transform (see wl_output.transform). + </description> + <arg name="width" type="int" + summary="width in global compositor space"/> + <arg name="height" type="int" + summary="height in global compositor space"/> + </event> + + <event name="done"> + <description summary="all information about the output have been sent"> + This event is sent after all other properties of an xdg_output + have been sent. + + This allows changes to the xdg_output properties to be seen as + atomic, even if they happen via multiple events. + </description> + </event> + + </interface> +</protocol> |