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280 lines
13 KiB
280 lines
13 KiB
<?xml version="1.0" encoding="UTF-8"?>
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<protocol name="wlr_layer_shell_unstable_v1">
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<copyright>
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Copyright © 2017 Drew DeVault
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Permission to use, copy, modify, distribute, and sell this
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software and its documentation for any purpose is hereby granted
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without fee, provided that the above copyright notice appear in
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all copies and that both that copyright notice and this permission
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notice appear in supporting documentation, and that the name of
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the copyright holders not be used in advertising or publicity
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pertaining to distribution of the software without specific,
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written prior permission. The copyright holders make no
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representations about the suitability of this software for any
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purpose. It is provided "as is" without express or implied
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warranty.
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THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
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SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
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FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
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SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
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AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
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ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
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THIS SOFTWARE.
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</copyright>
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<interface name="zwlr_layer_shell_v1" version="1">
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<description summary="create surfaces that are layers of the desktop">
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Clients can use this interface to assign the surface_layer role to
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wl_surfaces. Such surfaces are assigned to a "layer" of the output and
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rendered with a defined z-depth respective to each other. They may also be
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anchored to the edges and corners of a screen and specify input handling
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semantics. This interface should be suitable for the implementation of
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many desktop shell components, and a broad number of other applications
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that interact with the desktop.
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</description>
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<request name="get_layer_surface">
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<description summary="create a layer_surface from a surface">
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Create a layer surface for an existing surface. This assigns the role of
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layer_surface, or raises a protocol error if another role is already
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assigned.
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Creating a layer surface from a wl_surface which has a buffer attached
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or committed is a client error, and any attempts by a client to attach
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or manipulate a buffer prior to the first layer_surface.configure call
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must also be treated as errors.
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Clients can specify a namespace that defines the purpose of the layer
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surface.
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</description>
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<arg name="id" type="new_id" interface="zwlr_layer_surface_v1"/>
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<arg name="surface" type="object" interface="wl_surface"/>
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<arg name="output" type="object" interface="wl_output"/>
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<arg name="layer" type="uint" enum="layer" summary="layer to add this surface to"/>
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<arg name="namespace" type="string" summary="namespace for the layer surface"/>
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</request>
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<enum name="error">
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<entry name="role" value="0" summary="wl_surface has another role"/>
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<entry name="invalid_layer" value="1" summary="layer value is invalid"/>
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<entry name="already_constructed" value="2" summary="wl_surface has a buffer attached or committed"/>
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<entry name="request_denied" value="4" summary="the compositor has denied your request to use this layer"/>
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</enum>
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<enum name="layer">
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<description summary="available layers for surfaces">
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These values indicate which layers a surface can be rendered in. They
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are ordered by z depth, bottom-most first. Traditional shell surfaces
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will typically be rendered between the bottom and top layers.
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Fullscreen shell surfaces are typically rendered at the top layer.
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Multiple surfaces can share a single layer, and ordering within a
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single layer is undefined.
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</description>
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<entry name="background" value="0"/>
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<entry name="bottom" value="1"/>
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<entry name="top" value="2"/>
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<entry name="overlay" value="3"/>
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</enum>
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</interface>
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<interface name="zwlr_layer_surface_v1" version="1">
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<description summary="layer metadata interface">
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An interface that may be implemented by a wl_surface, for surfaces that
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are designed to be rendered as a layer of a stacked desktop-like
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environment.
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Layer surface state (anchor, exclusive zone, margin) is double-buffered.
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Protocol requests modify the pending state, as opposed to the current
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state in use by the compositor. The wl_surface.commit request atomically
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applies all pending state, replacing the current state. After commit, the
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new pending state is as documented for each related request.
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</description>
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<request name="set_anchor">
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<description summary="configures the anchor point of the surface">
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Requests that the compositor anchor the surface to the specified edges
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and corners. If two orthoginal edges are specified (e.g. 'top' and
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'left'), then the anchor point will be the intersection of the edges
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(e.g. the top left corner of the output); otherwise the anchor point
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will be centered on that edge, or in the center if none is specified.
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Anchor is double-buffered, see wl_surface.commit.
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</description>
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<arg name="anchor" type="uint" enum="anchor"/>
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</request>
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<request name="set_exclusive_zone">
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<description summary="configures the exclusive geometry of this surface">
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Requests that the compositor avoids occluding an area of the surface
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with other surfaces. The compositor's use of this information is
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implementation-dependent - do not assume that this region will not
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actually be occluded.
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This value is only meaningful if the surface is anchored to an edge,
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rather than a corner. The zone is the number of pixels from the edge
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that are considered exclusive.
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Exclusive zone is double-buffered, see wl_surface.commit.
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</description>
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<arg name="zone" type="uint"/>
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</request>
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<request name="set_margin">
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<description summary="sets a margin from the anchor point">
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Requests that the surface be placed some distance away from the anchor
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point on the output, in pixels. Setting this value for edges you are
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not anchored to has no effect.
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Margin is double-buffered, see wl_surface.commit.
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</description>
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<arg name="top" type="uint"/>
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<arg name="right" type="uint"/>
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<arg name="bottom" type="uint"/>
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<arg name="left" type="uint"/>
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</request>
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<request name="get_popup">
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<description summary="assign this layer_surface as an xdg_popup parent">
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This assigns an xdg_popup's parent to this layer_surface. This popup
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should have been created via xdg_surface::get_popup with the parent set
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to NULL, and this request must be invoked before committing the popup's
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initial state.
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See the documentation of xdg_popup for more details about what an
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xdg_popup is and how it is used.
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</description>
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<arg name="popup" type="object" interface="xdg_popup"/>
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</request>
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<request name="get_input">
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<description summary="obtain a layer input for this layer surface">
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This creates a layer input for this layer surface. This can be used to
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control input semantics for the layer surface on the specified wl_seat.
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</description>
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<arg name="id" type="new_id" interface="zwlr_layer_input_v1"/>
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<arg name="seat" type="object" interface="wl_seat"/>
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</request>
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<request name="ack_configure">
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<description summary="ack a configure event">
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When a configure event is received, if a client commits the
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surface in response to the configure event, then the client
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must make an ack_configure request sometime before the commit
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request, passing along the serial of the configure event.
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If the client receives multiple configure events before it
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can respond to one, it only has to ack the last configure event.
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A client is not required to commit immediately after sending
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an ack_configure request - it may even ack_configure several times
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before its next surface commit.
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A client may send multiple ack_configure requests before committing, but
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only the last request sent before a commit indicates which configure
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event the client really is responding to.
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</description>
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<arg name="serial" type="uint" summary="the serial from the configure event"/>
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</request>
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<request name="destroy" type="destructor">
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<description summary="destroy the layer_surface">
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This request destroys the layer surface.
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</description>
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</request>
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<event name="configure">
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<description summary="suggest a surface change">
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The configure event asks the client to resize its surface.
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Clients should arrange their surface for the new states, and then send
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an ack_configure request with the serial sent in this configure event at
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some point before committing the new surface.
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The client is free to dismiss all but the last configure event it
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received.
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The width and height arguments specify the size of the window in
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surface-local coordinates.
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The size is a hint, in the sense that the client is free to ignore it if
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it doesn't resize, pick a smaller size (to satisfy aspect ratio or
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resize in steps of NxM pixels). If the client picks a smaller size and
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is anchored to two opposite anchors (e.g. 'top' and 'bottom'), the
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surface will be centered on this axis.
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If the width or height arguments are zero, it means the client should
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decide its own window dimension.
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</description>
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<arg name="serial" type="uint"/>
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<arg name="width" type="uint"/>
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<arg name="height" type="uint"/>
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</event>
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<enum name="error">
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<entry name="invalid_input_device" value="0" summary="input device bitfield is invalid"/>
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<entry name="invalid_anchor" value="1" summary="anchor bitfield is invalid"/>
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<entry name="invalid_surface_state" value="2"
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summary="the client provided an invalid surface state"/>
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</enum>
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<enum name="anchor" bitfield="true">
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<entry name="top" value="1" summary="the top edge of the anchor rectangle"/>
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<entry name="bottom" value="2" summary="the bottom edge of the anchor rectangle"/>
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<entry name="left" value="4" summary="the left edge of the anchor rectangle"/>
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<entry name="right" value="8" summary="the right edge of the anchor rectangle"/>
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</enum>
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</interface>
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<interface name="zwlr_layer_input_v1" version="1">
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<description summary="layer surface input configuration object">
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Clients can use this interface to specify input semantics for a layer
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surface on a given seat. By default, layer surfaces are considered
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non-interactive by seats, and will not participate in their focus
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semantics or receive input events for them.
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Input state is double-buffered. Protocol requests modify the pending
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state, as opposed to the current state in use by the compositor. The
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wl_surface.commit request for the associated layer surface atomically
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applies all pending state, replacing the current state. After commit, the
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new pending state is as documented for each related request.
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</description>
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<request name="set_events">
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<description summary="set input events to receive">
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Requests that the seat send input events for the specified input devices
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to this layer surface.
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Positional events (pointer and touch) will only be sent if the layer
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surface is the top-most interactive surface, and only when the position
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of these events are relative to the surface. Enter and leave events will
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be signalled normally in these cases.
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Keyboard events will treat the layer surface as the only focused surface
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on the seat. Upon requesting keyboard events, the layer surface will
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receive a keyboard enter event. A leave event is signalled when it
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invokes set_events again without keyboard events specified.
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Events is double-buffered, see wl_surface.commit.
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</description>
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<arg name="events" type="uint" enum="input_device"/>
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</request>
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<request name="destroy" type="destructor">
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<description summary="destroy the layer_input">
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This request destroys the layer input.
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</description>
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</request>
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<enum name="input_device" bitfield="true">
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<entry name="pointer" value="1" summary="wl_pointer devices"/>
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<entry name="keyboard" value="2" summary="wl_keyboard devices"/>
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<entry name="touch" value="4" summary="wl_touch devices"/>
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<entry name="tablet" value="8" summary="zwp_tablet and zwp_tablet_tool devices"/>
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</enum>
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</interface>
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</protocol>
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