From 17aa5e21bfdf08adeb65e4f40cd3e059cf7432ba Mon Sep 17 00:00:00 2001
From: Drew DeVault <sir@cmpwn.com>
Date: Sun, 8 Apr 2018 11:05:20 -0400
Subject: Port to wlroots layer shell
---
lib/renderers/wayland/xdg-shell.xml | 1271 ++++++++++++++++++++++++-----------
1 file changed, 883 insertions(+), 388 deletions(-)
(limited to 'lib/renderers/wayland/xdg-shell.xml')
diff --git a/lib/renderers/wayland/xdg-shell.xml b/lib/renderers/wayland/xdg-shell.xml
index 7321ba7..d524ea9 100644
--- a/lib/renderers/wayland/xdg-shell.xml
+++ b/lib/renderers/wayland/xdg-shell.xml
@@ -1,11 +1,13 @@
<?xml version="1.0" encoding="UTF-8"?>
-<protocol name="xdg_shell_unstable_v5">
+<protocol name="xdg_shell">
<copyright>
Copyright © 2008-2013 Kristian Høgsberg
Copyright © 2013 Rafael Antognolli
Copyright © 2013 Jasper St. Pierre
Copyright © 2010-2013 Intel Corporation
+ Copyright © 2015-2017 Samsung Electronics Co., Ltd
+ Copyright © 2015-2017 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"),
@@ -27,214 +29,604 @@
DEALINGS IN THE SOFTWARE.
</copyright>
- <interface name="xdg_shell" version="1">
+ <interface name="xdg_wm_base" version="1">
<description summary="create desktop-style surfaces">
- xdg_shell allows clients to turn a wl_surface into a "real window"
- which can be dragged, resized, stacked, and moved around by the
- user. Everything about this interface is suited towards traditional
- desktop environments.
+ The xdg_wm_base interface is exposed as a global object enabling clients
+ to turn their wl_surfaces into windows in a desktop environment. It
+ defines the basic functionality needed for clients and the compositor to
+ create windows that can be dragged, resized, maximized, etc, as well as
+ creating transient windows such as popup menus.
</description>
- <enum name="version">
- <description summary="latest protocol version">
- The 'current' member of this enum gives the version of the
- protocol. Implementations can compare this to the version
- they implement using static_assert to ensure the protocol and
- implementation versions match.
- </description>
- <entry name="current" value="5" summary="Always the latest version"/>
- </enum>
-
<enum name="error">
<entry name="role" value="0" summary="given wl_surface has another role"/>
- <entry name="defunct_surfaces" value="1" summary="xdg_shell was destroyed before children"/>
- <entry name="not_the_topmost_popup" value="2" summary="the client tried to map or destroy a non-topmost popup"/>
- <entry name="invalid_popup_parent" value="3" summary="the client specified an invalid popup parent surface"/>
+ <entry name="defunct_surfaces" value="1"
+ summary="xdg_wm_base was destroyed before children"/>
+ <entry name="not_the_topmost_popup" value="2"
+ summary="the client tried to map or destroy a non-topmost popup"/>
+ <entry name="invalid_popup_parent" value="3"
+ summary="the client specified an invalid popup parent surface"/>
+ <entry name="invalid_surface_state" value="4"
+ summary="the client provided an invalid surface state"/>
+ <entry name="invalid_positioner" value="5"
+ summary="the client provided an invalid positioner"/>
</enum>
<request name="destroy" type="destructor">
- <description summary="destroy xdg_shell">
- Destroy this xdg_shell object.
+ <description summary="destroy xdg_wm_base">
+ Destroy this xdg_wm_base object.
- Destroying a bound xdg_shell object while there are surfaces
- still alive created by this xdg_shell object instance is illegal
- and will result in a protocol error.
+ Destroying a bound xdg_wm_base object while there are surfaces
+ still alive created by this xdg_wm_base object instance is illegal
+ and will result in a protocol error.
</description>
</request>
- <request name="use_unstable_version">
- <description summary="enable use of this unstable version">
- Negotiate the unstable version of the interface. This
- mechanism is in place to ensure client and server agree on the
- unstable versions of the protocol that they speak or exit
- cleanly if they don't agree. This request will go away once
- the xdg-shell protocol is stable.
+ <request name="create_positioner">
+ <description summary="create a positioner object">
+ Create a positioner object. A positioner object is used to position
+ surfaces relative to some parent surface. See the interface description
+ and xdg_surface.get_popup for details.
</description>
- <arg name="version" type="int"/>
+ <arg name="id" type="new_id" interface="xdg_positioner"/>
</request>
<request name="get_xdg_surface">
<description summary="create a shell surface from a surface">
- This creates an xdg_surface for the given surface and gives it the
- xdg_surface role. A wl_surface can only be given an xdg_surface role
- once. If get_xdg_surface is called with a wl_surface that already has
- an active xdg_surface associated with it, or if it had any other role,
- an error is raised.
+ This creates an xdg_surface for the given surface. While xdg_surface
+ itself is not a role, the corresponding surface may only be assigned
+ a role extending xdg_surface, such as xdg_toplevel or xdg_popup.
+
+ This creates an xdg_surface for the given surface. An xdg_surface is
+ used as basis to define a role to a given surface, such as xdg_toplevel
+ or xdg_popup. It also manages functionality shared between xdg_surface
+ based surface roles.
- See the documentation of xdg_surface for more details about what an
- xdg_surface is and how it is used.
+ See the documentation of xdg_surface for more details about what an
+ xdg_surface is and how it is used.
</description>
<arg name="id" type="new_id" interface="xdg_surface"/>
<arg name="surface" type="object" interface="wl_surface"/>
</request>
- <request name="get_xdg_popup">
- <description summary="create a popup for a surface">
- This creates an xdg_popup for the given surface and gives it the
- xdg_popup role. A wl_surface can only be given an xdg_popup role
- once. If get_xdg_popup is called with a wl_surface that already has
- an active xdg_popup associated with it, or if it had any other role,
- an error is raised.
-
- This request must be used in response to some sort of user action
- like a button press, key press, or touch down event.
-
- See the documentation of xdg_popup for more details about what an
- xdg_popup is and how it is used.
+ <request name="pong">
+ <description summary="respond to a ping event">
+ A client must respond to a ping event with a pong request or
+ the client may be deemed unresponsive. See xdg_wm_base.ping.
</description>
- <arg name="id" type="new_id" interface="xdg_popup"/>
- <arg name="surface" type="object" interface="wl_surface"/>
- <arg name="parent" type="object" interface="wl_surface"/>
- <arg name="seat" type="object" interface="wl_seat" summary="the wl_seat of the user event"/>
- <arg name="serial" type="uint" summary="the serial of the user event"/>
- <arg name="x" type="int"/>
- <arg name="y" type="int"/>
+ <arg name="serial" type="uint" summary="serial of the ping event"/>
</request>
<event name="ping">
<description summary="check if the client is alive">
- The ping event asks the client if it's still alive. Pass the
- serial specified in the event back to the compositor by sending
- a "pong" request back with the specified serial.
+ The ping event asks the client if it's still alive. Pass the
+ serial specified in the event back to the compositor by sending
+ a "pong" request back with the specified serial. See xdg_wm_base.ping.
- Compositors can use this to determine if the client is still
- alive. It's unspecified what will happen if the client doesn't
- respond to the ping request, or in what timeframe. Clients should
- try to respond in a reasonable amount of time.
+ Compositors can use this to determine if the client is still
+ alive. It's unspecified what will happen if the client doesn't
+ respond to the ping request, or in what timeframe. Clients should
+ try to respond in a reasonable amount of time.
- A compositor is free to ping in any way it wants, but a client must
- always respond to any xdg_shell object it created.
+ A compositor is free to ping in any way it wants, but a client must
+ always respond to any xdg_wm_base object it created.
</description>
<arg name="serial" type="uint" summary="pass this to the pong request"/>
</event>
+ </interface>
- <request name="pong">
- <description summary="respond to a ping event">
- A client must respond to a ping event with a pong request or
- the client may be deemed unresponsive.
+ <interface name="xdg_positioner" version="1">
+ <description summary="child surface positioner">
+ The xdg_positioner provides a collection of rules for the placement of a
+ child surface relative to a parent surface. Rules can be defined to ensure
+ the child surface remains within the visible area's borders, and to
+ specify how the child surface changes its position, such as sliding along
+ an axis, or flipping around a rectangle. These positioner-created rules are
+ constrained by the requirement that a child surface must intersect with or
+ be at least partially adjacent to its parent surface.
+
+ See the various requests for details about possible rules.
+
+ At the time of the request, the compositor makes a copy of the rules
+ specified by the xdg_positioner. Thus, after the request is complete the
+ xdg_positioner object can be destroyed or reused; further changes to the
+ object will have no effect on previous usages.
+
+ For an xdg_positioner object to be considered complete, it must have a
+ non-zero size set by set_size, and a non-zero anchor rectangle set by
+ set_anchor_rect. Passing an incomplete xdg_positioner object when
+ positioning a surface raises an error.
+ </description>
+
+ <enum name="error">
+ <entry name="invalid_input" value="0" summary="invalid input provided"/>
+ </enum>
+
+ <request name="destroy" type="destructor">
+ <description summary="destroy the xdg_positioner object">
+ Notify the compositor that the xdg_positioner will no longer be used.
</description>
- <arg name="serial" type="uint" summary="serial of the ping event"/>
+ </request>
+
+ <request name="set_size">
+ <description summary="set the size of the to-be positioned rectangle">
+ Set the size of the surface that is to be positioned with the positioner
+ object. The size is in surface-local coordinates and corresponds to the
+ window geometry. See xdg_surface.set_window_geometry.
+
+ If a zero or negative size is set the invalid_input error is raised.
+ </description>
+ <arg name="width" type="int" summary="width of positioned rectangle"/>
+ <arg name="height" type="int" summary="height of positioned rectangle"/>
+ </request>
+
+ <request name="set_anchor_rect">
+ <description summary="set the anchor rectangle within the parent surface">
+ Specify the anchor rectangle within the parent surface that the child
+ surface will be placed relative to. The rectangle is relative to the
+ window geometry as defined by xdg_surface.set_window_geometry of the
+ parent surface.
+
+ When the xdg_positioner object is used to position a child surface, the
+ anchor rectangle may not extend outside the window geometry of the
+ positioned child's parent surface.
+
+ If a negative size is set the invalid_input error is raised.
+ </description>
+ <arg name="x" type="int" summary="x position of anchor rectangle"/>
+ <arg name="y" type="int" summary="y position of anchor rectangle"/>
+ <arg name="width" type="int" summary="width of anchor rectangle"/>
+ <arg name="height" type="int" summary="height of anchor rectangle"/>
+ </request>
+
+ <enum name="anchor">
+ <entry name="none" value="0"/>
+ <entry name="top" value="1"/>
+ <entry name="bottom" value="2"/>
+ <entry name="left" value="3"/>
+ <entry name="right" value="4"/>
+ <entry name="top_left" value="5"/>
+ <entry name="bottom_left" value="6"/>
+ <entry name="top_right" value="7"/>
+ <entry name="bottom_right" value="8"/>
+ </enum>
+
+ <request name="set_anchor">
+ <description summary="set anchor rectangle anchor">
+ Defines the anchor point for the anchor rectangle. The specified anchor
+ is used derive an anchor point that the child surface will be
+ positioned relative to. If a corner anchor is set (e.g. 'top_left' or
+ 'bottom_right'), the anchor point will be at the specified corner;
+ otherwise, the derived anchor point will be centered on the specified
+ edge, or in the center of the anchor rectangle if no edge is specified.
+ </description>
+ <arg name="anchor" type="uint" enum="anchor"
+ summary="anchor"/>
+ </request>
+
+ <enum name="gravity">
+ <entry name="none" value="0"/>
+ <entry name="top" value="1"/>
+ <entry name="bottom" value="2"/>
+ <entry name="left" value="3"/>
+ <entry name="right" value="4"/>
+ <entry name="top_left" value="5"/>
+ <entry name="bottom_left" value="6"/>
+ <entry name="top_right" value="7"/>
+ <entry name="bottom_right" value="8"/>
+ </enum>
+
+ <request name="set_gravity">
+ <description summary="set child surface gravity">
+ Defines in what direction a surface should be positioned, relative to
+ the anchor point of the parent surface. If a corner gravity is
+ specified (e.g. 'bottom_right' or 'top_left'), then the child surface
+ will be placed towards the specified gravity; otherwise, the child
+ surface will be centered over the anchor point on any axis that had no
+ gravity specified.
+ </description>
+ <arg name="gravity" type="uint" enum="gravity"
+ summary="gravity direction"/>
+ </request>
+
+ <enum name="constraint_adjustment" bitfield="true">
+ <description summary="constraint adjustments">
+ The constraint adjustment value define ways the compositor will adjust
+ the position of the surface, if the unadjusted position would result
+ in the surface being partly constrained.
+
+ Whether a surface is considered 'constrained' is left to the compositor
+ to determine. For example, the surface may be partly outside the
+ compositor's defined 'work area', thus necessitating the child surface's
+ position be adjusted until it is entirely inside the work area.
+
+ The adjustments can be combined, according to a defined precedence: 1)
+ Flip, 2) Slide, 3) Resize.
+ </description>
+ <entry name="none" value="0">
+ <description summary="don't move the child surface when constrained">
+ Don't alter the surface position even if it is constrained on some
+ axis, for example partially outside the edge of an output.
+ </description>
+ </entry>
+ <entry name="slide_x" value="1">
+ <description summary="move along the x axis until unconstrained">
+ Slide the surface along the x axis until it is no longer constrained.
+
+ First try to slide towards the direction of the gravity on the x axis
+ until either the edge in the opposite direction of the gravity is
+ unconstrained or the edge in the direction of the gravity is
+ constrained.
+
+ Then try to slide towards the opposite direction of the gravity on the
+ x axis until either the edge in the direction of the gravity is
+ unconstrained or the edge in the opposite direction of the gravity is
+ constrained.
+ </description>
+ </entry>
+ <entry name="slide_y" value="2">
+ <description summary="move along the y axis until unconstrained">
+ Slide the surface along the y axis until it is no longer constrained.
+
+ First try to slide towards the direction of the gravity on the y axis
+ until either the edge in the opposite direction of the gravity is
+ unconstrained or the edge in the direction of the gravity is
+ constrained.
+
+ Then try to slide towards the opposite direction of the gravity on the
+ y axis until either the edge in the direction of the gravity is
+ unconstrained or the edge in the opposite direction of the gravity is
+ constrained.
+ </description>
+ </entry>
+ <entry name="flip_x" value="4">
+ <description summary="invert the anchor and gravity on the x axis">
+ Invert the anchor and gravity on the x axis if the surface is
+ constrained on the x axis. For example, if the left edge of the
+ surface is constrained, the gravity is 'left' and the anchor is
+ 'left', change the gravity to 'right' and the anchor to 'right'.
+
+ If the adjusted position also ends up being constrained, the resulting
+ position of the flip_x adjustment will be the one before the
+ adjustment.
+ </description>
+ </entry>
+ <entry name="flip_y" value="8">
+ <description summary="invert the anchor and gravity on the y axis">
+ Invert the anchor and gravity on the y axis if the surface is
+ constrained on the y axis. For example, if the bottom edge of the
+ surface is constrained, the gravity is 'bottom' and the anchor is
+ 'bottom', change the gravity to 'top' and the anchor to 'top'.
+
+ The adjusted position is calculated given the original anchor
+ rectangle and offset, but with the new flipped anchor and gravity
+ values.
+
+ If the adjusted position also ends up being constrained, the resulting
+ position of the flip_y adjustment will be the one before the
+ adjustment.
+ </description>
+ </entry>
+ <entry name="resize_x" value="16">
+ <description summary="horizontally resize the surface">
+ Resize the surface horizontally so that it is completely
+ unconstrained.
+ </description>
+ </entry>
+ <entry name="resize_y" value="32">
+ <description summary="vertically resize the surface">
+ Resize the surface vertically so that it is completely unconstrained.
+ </description>
+ </entry>
+ </enum>
+
+ <request name="set_constraint_adjustment">
+ <description summary="set the adjustment to be done when constrained">
+ Specify how the window should be positioned if the originally intended
+ position caused the surface to be constrained, meaning at least
+ partially outside positioning boundaries set by the compositor. The
+ adjustment is set by constructing a bitmask describing the adjustment to
+ be made when the surface is constrained on that axis.
+
+ If no bit for one axis is set, the compositor will assume that the child
+ surface should not change its position on that axis when constrained.
+
+ If more than one bit for one axis is set, the order of how adjustments
+ are applied is specified in the corresponding adjustment descriptions.
+
+ The default adjustment is none.
+ </description>
+ <arg name="constraint_adjustment" type="uint"
+ summary="bit mask of constraint adjustments"/>
+ </request>
+
+ <request name="set_offset">
+ <description summary="set surface position offset">
+ Specify the surface position offset relative to the position of the
+ anchor on the anchor rectangle and the anchor on the surface. For
+ example if the anchor of the anchor rectangle is at (x, y), the surface
+ has the gravity bottom|right, and the offset is (ox, oy), the calculated
+ surface position will be (x + ox, y + oy). The offset position of the
+ surface is the one used for constraint testing. See
+ set_constraint_adjustment.
+
+ An example use case is placing a popup menu on top of a user interface
+ element, while aligning the user interface element of the parent surface
+ with some user interface element placed somewhere in the popup surface.
+ </description>
+ <arg name="x" type="int" summary="surface position x offset"/>
+ <arg name="y" type="int" summary="surface position y offset"/>
</request>
</interface>
<interface name="xdg_surface" version="1">
- <description summary="A desktop window">
+ <description summary="desktop user interface surface base interface">
An interface that may be implemented by a wl_surface, for
implementations that provide a desktop-style user interface.
- It provides requests to treat surfaces like windows, allowing to set
- properties like maximized, fullscreen, minimized, and to move and resize
- them, and associate metadata like title and app id.
+ It provides a base set of functionality required to construct user
+ interface elements requiring management by the compositor, such as
+ toplevel windows, menus, etc. The types of functionality are split into
+ xdg_surface roles.
+
+ Creating an xdg_surface does not set the role for a wl_surface. In order
+ to map an xdg_surface, the client must create a role-specific object
+ using, e.g., get_toplevel, get_popup. The wl_surface for any given
+ xdg_surface can have at most one role, and may not be assigned any role
+ not based on xdg_surface.
+
+ A role must be assigned before any other requests are made to the
+ xdg_surface object.
The client must call wl_surface.commit on the corresponding wl_surface
- for the xdg_surface state to take effect. Prior to committing the new
- state, it can set up initial configuration, such as maximizing or setting
- a window geometry.
+ for the xdg_surface state to take effect.
+
+ Creating an xdg_surface from a wl_surface which has a buffer attached or
+ committed is a client error, and any attempts by a client to attach or
+ manipulate a buffer prior to the first xdg_surface.configure call must
+ also be treated as errors.
+
+ Mapping an xdg_surface-based role surface is defined as making it
+ possible for the surface to be shown by the compositor. Note that
+ a mapped surface is not guaranteed to be visible once it is mapped.
+
+ For an xdg_surface to be mapped by the compositor, the following
+ conditions must be met:
+ (1) the client has assigned an xdg_surface-based role to the surface
+ (2) the client has set and committed the xdg_surface state and the
+ role-dependent state to the surface
+ (3) the client has committed a buffer to the surface
+
+ A newly-unmapped surface is considered to have met condition (1) out
+ of the 3 required conditions for mapping a surface if its role surface
+ has not been destroyed.
+ </description>
+
+ <enum name="error">
+ <entry name="not_constructed" value="1"/>
+ <entry name="already_constructed" value="2"/>
+ <entry name="unconfigured_buffer" value="3"/>
+ </enum>
+
+ <request name="destroy" type="destructor">
+ <description summary="destroy the xdg_surface">
+ Destroy the xdg_surface object. An xdg_surface must only be destroyed
+ after its role object has been destroyed.
+ </description>
+ </request>
+
+ <request name="get_toplevel">
+ <description summary="assign the xdg_toplevel surface role">
+ This creates an xdg_toplevel object for the given xdg_surface and gives
+ the associated wl_surface the xdg_toplevel role.
+
+ See the documentation of xdg_toplevel for more details about what an
+ xdg_toplevel is and how it is used.
+ </description>
+ <arg name="id" type="new_id" interface="xdg_toplevel"/>
+ </request>
+
+ <request name="get_popup">
+ <description summary="assign the xdg_popup surface role">
+ This creates an xdg_popup object for the given xdg_surface and gives
+ the associated wl_surface the xdg_popup role.
+
+ If null is passed as a parent, a parent surface must be specified using
+ some other protocol, before committing the initial state.
+
+ See the documentation of xdg_popup for more details about what an
+ xdg_popup is and how it is used.
+ </description>
+ <arg name="id" type="new_id" interface="xdg_popup"/>
+ <arg name="parent" type="object" interface="xdg_surface" allow-null="true"/>
+ <arg name="positioner" type="object" interface="xdg_positioner"/>
+ </request>
+
+ <request name="set_window_geometry">
+ <description summary="set the new window geometry">
+ The window geometry of a surface is its "visible bounds" from the
+ user's perspective. Client-side decorations often have invisible
+ portions like drop-shadows which should be ignored for the
+ purposes of aligning, placing and constraining windows.
+
+ The window geometry is double buffered, and will be applied at the
+ time wl_surface.commit of the corresponding wl_surface is called.
+
+ When maintaining a position, the compositor should treat the (x, y)
+ coordinate of the window geometry as the top left corner of the window.
+ A client changing the (x, y) window geometry coordinate should in
+ general not alter the position of the window.
+
+ Once the window geometry of the surface is set, it is not possible to
+ unset it, and it will remain the same until set_window_geometry is
+ called again, even if a new subsurface or buffer is attached.
+
+ If never set, the value is the full bounds of the surface,
+ including any subsurfaces. This updates dynamically on every
+ commit. This unset is meant for extremely simple clients.
+
+ The arguments are given in the surface-local coordinate space of
+ the wl_surface associated with this xdg_surface.
+
+ The width and height must be greater than zero. Setting an invalid size
+ will raise an error. When applied, the effective window geometry will be
+ the set window geometry clamped to the bounding rectangle of the
+ combined geometry of the surface of the xdg_surface and the associated
+ subsurfaces.
+ </description>
+ <arg name="x" type="int"/>
+ <arg name="y" type="int"/>
+ <arg name="width" type="int"/>
+ <arg name="height" type="int"/>
+ </request>
- Even without attaching a buffer the compositor must respond to initial
- committed configuration, for instance sending a configure event with
- expected window geometry if the client maximized its surface during
- initialization.
+ <request name="ack_configure">
+ <description summary="ack a configure event">
+ When a configure event is received, if a client commits the
+ surface in response to the configure event, then the client
+ must make an ack_configure request sometime before the commit
+ request, passing along the serial of the configure event.
+
+ For instance, for toplevel surfaces the compositor might use this
+ information to move a surface to the top left only when the client has
+ drawn itself for the maximized or fullscreen state.
+
+ If the client receives multiple configure events before it
+ can respond to one, it only has to ack the last configure event.
- For a surface to be mapped by the compositor the client must have
- committed both an xdg_surface state and a buffer.
+ A client is not required to commit immediately after sending
+ an ack_configure request - it may even ack_configure several times
+ before its next surface commit.
+
+ A client may send multiple ack_configure requests before committing, but
+ only the last request sent before a commit indicates which configure
+ event the client really is responding to.
+ </description>
+ <arg name="serial" type="uint" summary="the serial from the configure event"/>
+ </request>
+
+ <event name="configure">
+ <description summary="suggest a surface change">
+ The configure event marks the end of a configure sequence. A configure
+ sequence is a set of one or more events configuring the state of the
+ xdg_surface, including the final xdg_surface.configure event.
+
+ Where applicable, xdg_surface surface roles will during a configure
+ sequence extend this event as a latched state sent as events before the
+ xdg_surface.configure event. Such events should be considered to make up
+ a set of atomically applied configuration states, where the
+ xdg_surface.configure commits the accumulated state.
+
+ Clients should arrange their surface for the new states, and then send
+ an ack_configure request with the serial sent in this configure event at
+ some point before committing the new surface.
+
+ If the client receives multiple configure events before it can respond
+ to one, it is free to discard all but the last event it received.
+ </description>
+ <arg name="serial" type="uint" summary="serial of the configure event"/>
+ </event>
+ </interface>
+
+ <interface name="xdg_toplevel" version="1">
+ <description summary="toplevel surface">
+ This interface defines an xdg_surface role which allows a surface to,
+ among other things, set window-like properties such as maximize,
+ fullscreen, and minimize, set application-specific metadata like title and
+ id, and well as trigger user interactive operations such as interactive
+ resize and move.
+
+ Unmapping an xdg_toplevel means that the surface cannot be shown
+ by the compositor until it is explicitly mapped again.
+ All active operations (e.g., move, resize) are canceled and all
+ attributes (e.g. title, state, stacking, ...) are discarded for
+ an xdg_toplevel surface when it is unmapped.
+
+ Attaching a null buffer to a toplevel unmaps the surface.
</description>
<request name="destroy" type="destructor">
- <description summary="Destroy the xdg_surface">
- Unmap and destroy the window. The window will be effectively
- hidden from the user's point of view, and all state like
- maximization, fullscreen, and so on, will be lost.
+ <description summary="destroy the xdg_toplevel">
+ This request destroys the role surface and unmaps the surface;
+ see "Unmapping" behavior in interface section for details.
</description>
</request>
<request name="set_parent">
<description summary="set the parent of this surface">
- Set the "parent" of this surface. This window should be stacked
- above a parent. The parent surface must be mapped as long as this
- surface is mapped.
-
- Parent windows should be set on dialogs, toolboxes, or other
- "auxiliary" surfaces, so that the parent is raised when the dialog
- is raised.
+ Set the "parent" of this surface. This surface should be stacked
+ above the parent surface and all other ancestor surfaces.
+
+ Parent windows should be set on dialogs, toolboxes, or other
+ "auxiliary" surfaces, so that the parent is raised when the dialog
+ is raised.
+
+ Setting a null parent for a child window removes any parent-child
+ relationship for the child. Setting a null parent for a window which
+ currently has no parent is a no-op.
+
+ If the parent is unmapped then its children are managed as
+ though the parent of the now-unmapped parent has become the
+ parent of this surface. If no parent exists for the now-unmapped
+ parent then the children are managed as though they have no
+ parent surface.
</description>
- <arg name="parent" type="object" interface="xdg_surface" allow-null="true"/>
+ <arg name="parent" type="object" interface="xdg_toplevel" allow-null="true"/>
</request>
<request name="set_title">
<description summary="set surface title">
- Set a short title for the surface.
+ Set a short title for the surface.
- This string may be used to identify the surface in a task bar,
- window list, or other user interface elements provided by the
- compositor.
+ This string may be used to identify the surface in a task bar,
+ window list, or other user interface elements provided by the
+ compositor.
- The string must be encoded in UTF-8.
+ The string must be encoded in UTF-8.
</description>
<arg name="title" type="string"/>
</request>
<request name="set_app_id">
<description summary="set application ID">
- Set an application identifier for the surface.
+ Set an application identifier for the surface.
- The app ID identifies the general class of applications to which
- the surface belongs. The compositor can use this to group multiple
- surfaces together, or to determine how to launch a new application.
+ The app ID identifies the general class of applications to which
+ the surface belongs. The compositor can use this to group multiple
+ surfaces together, or to determine how to launch a new application.
- For D-Bus activatable applications, the app ID is used as the D-Bus
- service name.
+ For D-Bus activatable applications, the app ID is used as the D-Bus
+ service name.
- The compositor shell will try to group application surfaces together
- by their app ID. As a best practice, it is suggested to select app
- ID's that match the basename of the application's .desktop file.
- For example, "org.freedesktop.FooViewer" where the .desktop file is
- "org.freedesktop.FooViewer.desktop".
+ The compositor shell will try to group application surfaces together
+ by their app ID. As a best practice, it is suggested to select app
+ ID's that match the basename of the application's .desktop file.
+ For example, "org.freedesktop.FooViewer" where the .desktop file is
+ "org.freedesktop.FooViewer.desktop".
- See the desktop-entry specification [0] for more details on
- application identifiers and how they relate to well-known D-Bus
- names and .desktop files.
+ See the desktop-entry specification [0] for more details on
+ application identifiers and how they relate to well-known D-Bus
+ names and .desktop files.
- [0] http://standards.freedesktop.org/desktop-entry-spec/
+ [0] http://standards.freedesktop.org/desktop-entry-spec/
</description>
<arg name="app_id" type="string"/>
</request>
<request name="show_window_menu">
<description summary="show the window menu">
- Clients implementing client-side decorations might want to show
- a context menu when right-clicking on the decorations, giving the
- user a menu that they can use to maximize or minimize the window.
+ Clients implementing client-side decorations might want to show
+ a context menu when right-clicking on the decorations, giving the
+ user a menu that they can use to maximize or minimize the window.
- This request asks the compositor to pop up such a window menu at
- the given position, relative to the local surface coordinates of
- the parent surface. There are no guarantees as to what menu items
- the window menu contains.
+ This request asks the compositor to pop up such a window menu at
+ the given position, relative to the local surface coordinates of
+ the parent surface. There are no guarantees as to what menu items
+ the window menu contains.
- This request must be used in response to some sort of user action
- like a button press, key press, or touch down event.
+ This request must be used in response to some sort of user action
+ like a button press, key press, or touch down event.
</description>
-
<arg name="seat" type="object" interface="wl_seat" summary="the wl_seat of the user event"/>
<arg name="serial" type="uint" summary="the serial of the user event"/>
<arg name="x" type="int" summary="the x position to pop up the window menu at"/>
@@ -243,22 +635,22 @@
<request name="move">
<description summary="start an interactive move">
- Start an interactive, user-driven move of the surface.
-
- This request must be used in response to some sort of user action
- like a button press, key press, or touch down event. The passed
- serial is used to determine the type of interactive move (touch,
- pointer, etc).
-
- The server may ignore move requests depending on the state of
- the surface (e.g. fullscreen or maximized), or if the passed serial
- is no longer valid.
-
- If triggered, the surface will lose the focus of the device
- (wl_pointer, wl_touch, etc) used for the move. It is up to the
- compositor to visually indicate that the move is taking place, such as
- updating a pointer cursor, during the move. There is no guarantee
- that the device focus will return when the move is completed.
+ Start an interactive, user-driven move of the surface.
+
+ This request must be used in response to some sort of user action
+ like a button press, key press, or touch down event. The passed
+ serial is used to determine the type of interactive move (touch,
+ pointer, etc).
+
+ The server may ignore move requests depending on the state of
+ the surface (e.g. fullscreen or maximized), or if the passed serial
+ is no longer valid.
+
+ If triggered, the surface will lose the focus of the device
+ (wl_pointer, wl_touch, etc) used for the move. It is up to the
+ compositor to visually indicate that the move is taking place, such as
+ updating a pointer cursor, during the move. There is no guarantee
+ that the device focus will return when the move is completed.
</description>
<arg name="seat" type="object" interface="wl_seat" summary="the wl_seat of the user event"/>
<arg name="serial" type="uint" summary="the serial of the user event"/>
@@ -266,8 +658,8 @@
<enum name="resize_edge">
<description summary="edge values for resizing">
- These values are used to indicate which edge of a surface
- is being dragged in a resize operation.
+ These values are used to indicate which edge of a surface
+ is being dragged in a resize operation.
</description>
<entry name="none" value="0"/>
<entry name="top" value="1"/>
@@ -282,36 +674,36 @@
<request name="resize">
<description summary="start an interactive resize">
- Start a user-driven, interactive resize of the surface.
-
- This request must be used in response to some sort of user action
- like a button press, key press, or touch down event. The passed
- serial is used to determine the type of interactive resize (touch,
- pointer, etc).
-
- The server may ignore resize requests depending on the state of
- the surface (e.g. fullscreen or maximized).
-
- If triggered, the client will receive configure events with the
- "resize" state enum value and the expected sizes. See the "resize"
- enum value for more details about what is required. The client
- must also acknowledge configure events using "ack_configure". After
- the resize is completed, the client will receive another "configure"
- event without the resize state.
-
- If triggered, the surface also will lose the focus of the device
- (wl_pointer, wl_touch, etc) used for the resize. It is up to the
- compositor to visually indicate that the resize is taking place,
- such as updating a pointer cursor, during the resize. There is no
- guarantee that the device focus will return when the resize is
- completed.
-
- The edges parameter specifies how the surface should be resized,
- and is one of the values of the resize_edge enum. The compositor
- may use this information to update the surface position for
- example when dragging the top left corner. The compositor may also
- use this information to adapt its behavior, e.g. choose an
- appropriate cursor image.
+ Start a user-driven, interactive resize of the surface.
+
+ This request must be used in response to some sort of user action
+ like a button press, key press, or touch down event. The passed
+ serial is used to determine the type of interactive resize (touch,
+ pointer, etc).
+
+ The server may ignore resize requests depending on the state of
+ the surface (e.g. fullscreen or maximized).
+
+ If triggered, the client will receive configure events with the
+ "resize" state enum value and the expected sizes. See the "resize"
+ enum value for more details about what is required. The client
+ must also acknowledge configure events using "ack_configure". After
+ the resize is completed, the client will receive another "configure"
+ event without the resize state.
+
+ If triggered, the surface also will lose the focus of the device
+ (wl_pointer, wl_touch, etc) used for the resize. It is up to the
+ compositor to visually indicate that the resize is taking place,
+ such as updating a pointer cursor, during the resize. There is no
+ guarantee that the device focus will return when the resize is
+ completed.
+
+ The edges parameter specifies how the surface should be resized,
+ and is one of the values of the resize_edge enum. The compositor
+ may use this information to update the surface position for
+ example when dragging the top left corner. The compositor may also
+ use this information to adapt its behavior, e.g. choose an
+ appropriate cursor image.
</description>
<arg name="seat" type="object" interface="wl_seat" summary="the wl_seat of the user event"/>
<arg name="serial" type="uint" summary="the serial of the user event"/>
@@ -320,304 +712,407 @@
<enum name="state">
<description summary="types of state on the surface">
- The different state values used on the surface. This is designed for
- state values like maximized, fullscreen. It is paired with the
- configure event to ensure that both the client and the compositor
- setting the state can be synchronized.
-
- States set in this way are double-buffered. They will get applied on
- the next commit.
-
- Desktop environments may extend this enum by taking up a range of
- values and documenting the range they chose in this description.
- They are not required to document the values for the range that they
- chose. Ideally, any good extensions from a desktop environment should
- make its way into standardization into this enum.
+ The different state values used on the surface. This is designed for
+ state values like maximized, fullscreen. It is paired with the
+ configure event to ensure that both the client and the compositor
+ setting the state can be synchronized.
- The current reserved ranges are:
-
- 0x0000 - 0x0FFF: xdg-shell core values, documented below.
- 0x1000 - 0x1FFF: GNOME
- 0x2000 - 0x2FFF: EFL
+ States set in this way are double-buffered. They will get applied on
+ the next commit.
</description>
<entry name="maximized" value="1" summary="the surface is maximized">
- <description summary="the surface is maximized">
- The surface is maximized. The window geometry specified in the configure
- event must be obeyed by the client.
- </description>
+ <description summary="the surface is maximized">
+ The surface is maximized. The window geometry specified in the configure
+ event must be obeyed by the client.
+ </description>
</entry>
<entry name="fullscreen" value="2" summary="the surface is fullscreen">
- <description summary="the surface is fullscreen">
- The surface is fullscreen. The window geometry specified in the configure
- event must be obeyed by the client.
- </description>
+ <description summary="the surface is fullscreen">
+ The surface is fullscreen. The window geometry specified in the
+ configure event is a maximum; the client cannot resize beyond it. For
+ a surface to cover the whole fullscreened area, the geometry
+ dimensions must be obeyed by the client. For more details, see
+ xdg_toplevel.set_fullscreen.
+ </description>
</entry>
<entry name="resizing" value="3" summary="the surface is being resized">
- <description summary="the surface is being resized">
- The surface is being resized. The window geometry specified in the
- configure event is a maximum; the client cannot resize beyond it.
- Clients that have aspect ratio or cell sizing configuration can use
- a smaller size, however.
- </description>
+ <description summary="the surface is being resized">
+ The surface is being resized. The window geometry specified in the
+ configure event is a maximum; the client cannot resize beyond it.
+ Clients that have aspect ratio or cell sizing configuration can use
+ a smaller size, however.
+ </description>
</entry>
<entry name="activated" value="4" summary="the surface is now activated">
- <description summary="the surface is now activated">
- Client window decorations should be painted as if the window is
- active. Do not assume this means that the window actually has
- keyboard or pointer focus.
- </description>
+ <description summary="the surface is now activated">
+ Client window decorations should be painted as if the window is
+ active. Do not assume this means that the window actually has
+ keyboard or pointer focus.
+ </description>
</entry>
</enum>
- <event name="configure">
- <description summary="suggest a surface change">
- The configure event asks the client to resize its surface or to
- change its state.
+ <request name="set_max_size">
+ <description summary="set the maximum size">
+ Set a maximum size for the window.
- The width and height arguments specify a hint to the window
- about how its surface should be resized in window geometry
- coordinates. See set_window_geometry.
+ The client can specify a maximum size so that the compositor does
+ not try to configure the window beyond this size.
- If the width or height arguments are zero, it means the client
- should decide its own window dimension. This may happen when the
- compositor need to configure the state of the surface but doesn't
- have any information about any previous or expected dimension.
+ The width and height arguments are in window geometry coordinates.
+ See xdg_surface.set_window_geometry.
- The states listed in the event specify how the width/height
- arguments should be interpreted, and possibly how it should be
- drawn.
+ Values set in this way are double-buffered. They will get applied
+ on the next commit.
- Clients should arrange their surface for the new size and
- states, and then send a ack_configure request with the serial
- sent in this configure event at some point before committing
- the new surface.
+ The compositor can use this information to allow or disallow
+ different states like maximize or fullscreen and draw accurate
+ animations.
- If the client receives multiple configure events before it
- can respond to one, it is free to discard all but the last
- event it received.
- </description>
+ Similarly, a tiling window manager may use this information to
+ place and resize client windows in a more effective way.
- <arg name="width" type="int"/>
- <arg name="height" type="int"/>
- <arg name="states" type="array"/>
- <arg name="serial" type="uint"/>
- </event>
-
- <request name="ack_configure">
- <description summary="ack a configure event">
- When a configure event is received, if a client commits the
- surface in response to the configure event, then the client
- must make an ack_configure request sometime before the commit
- request, passing along the serial of the configure event.
+ The client should not rely on the compositor to obey the maximum
+ size. The compositor may decide to ignore the values set by the
+ client and request a larger size.
- For instance, the compositor might use this information to move
- a surface to the top left only when the client has drawn itself
- for the maximized or fullscreen state.
+ If never set, or a value of zero in the request, means that the
+ client has no expected maximum size in the given dimension.
+ As a result, a client wishing to reset the maximum size
+ to an unspecified state can use zero for width and height in the
+ request.
- If the client receives multiple configure events before it
- can respond to one, it only has to ack the last configure event.
+ Requesting a maximum size to be smaller than the minimum size of
+ a surface is illegal and will result in a protocol error.
- A client is not required to commit immediately after sending
- an ack_configure request - it may even ack_configure several times
- before its next surface commit.
-
- The compositor expects that the most recently received
- ack_configure request at the time of a commit indicates which
- configure event the client is responding to.
+ The width and height must be greater than or equal to zero. Using
+ strictly negative values for width and height will result in a
+ protocol error.
</description>
- <arg name="serial" type="uint" summary="the serial from the configure event"/>
+ <arg name="width" type="int"/>
+ <arg name="height" type="int"/>
</request>
- <request name="set_window_geometry">
- <description summary="set the new window geometry">
- The window geometry of a window is its "visible bounds" from the
- user's perspective. Client-side decorations often have invisible
- portions like drop-shadows which should be ignored for the
- purposes of aligning, placing and constraining windows.
+ <request name="set_min_size">
+ <description summary="set the minimum size">
+ Set a minimum size for the window.
- The window geometry is double buffered, and will be applied at the
- time wl_surface.commit of the corresponding wl_surface is called.
+ The client can specify a minimum size so that the compositor does
+ not try to configure the window below this size.
- Once the window geometry of the surface is set once, it is not
- possible to unset it, and it will remain the same until
- set_window_geometry is called again, even if a new subsurface or
- buffer is attached.
+ The width and height arguments are in window geometry coordinates.
+ See xdg_surface.set_window_geometry.
- If never set, the value is the full bounds of the surface,
- including any subsurfaces. This updates dynamically on every
- commit. This unset mode is meant for extremely simple clients.
+ Values set in this way are double-buffered. They will get applied
+ on the next commit.
- If responding to a configure event, the window geometry in here
- must respect the sizing negotiations specified by the states in
- the configure event.
+ The compositor can use this information to allow or disallow
+ different states like maximize or fullscreen and draw accurate
+ animations.
- The arguments are given in the surface local coordinate space of
- the wl_surface associated with this xdg_surface.
+ Similarly, a tiling window manager may use this information to
+ place and resize client windows in a more effective way.
- The width and height must be greater than zero.
+ The client should not rely on the compositor to obey the minimum
+ size. The compositor may decide to ignore the values set by the
+ client and request a smaller size.
+
+ If never set, or a value of zero in the request, means that the
+ client has no expected minimum size in the given dimension.
+ As a result, a client wishing to reset the minimum size
+ to an unspecified state can use zero for width and height in the
+ request.
+
+ Requesting a minimum size to be larger than the maximum size of
+ a surface is illegal and will result in a protocol error.
+
+ The width and height must be greater than or equal to zero. Using
+ strictly negative values for width and height will result in a
+ protocol error.
</description>
- <arg name="x" type="int"/>
- <arg name="y" type="int"/>
<arg name="width" type="int"/>
<arg name="height" type="int"/>
</request>
<request name="set_maximized">
<description summary="maximize the window">
- Maximize the surface.
-
- After requesting that the surface should be maximized, the compositor
- will respond by emitting a configure event with the "maximized" state
- and the required window geometry. The client should then update its
- content, drawing it in a maximized state, i.e. without shadow or other
- decoration outside of the window geometry. The client must also
- acknowledge the configure when committing the new content (see
- ack_configure).
-
- It is up to the compositor to decide how and where to maximize the
- surface, for example which output and what region of the screen should
- be used.
-
- If the surface was already maximized, the compositor will still emit
- a configure event with the "maximized" state.
+ Maximize the surface.
+
+ After requesting that the surface should be maximized, the compositor
+ will respond by emitting a configure event with the "maximized" state
+ and the required window geometry. The client should then update its
+ content, drawing it in a maximized state, i.e. without shadow or other
+ decoration outside of the window geometry. The client must also
+ acknowledge the configure when committing the new content (see
+ ack_configure).
+
+ It is up to the compositor to decide how and where to maximize the
+ surface, for example which output and what region of the screen should
+ be used.
+
+ If the surface was already maximized, the compositor will still emit
+ a configure event with the "maximized" state.
+
+ If the surface is in a fullscreen state, this request has no direct
+ effect. It will alter the state the surface is returned to when
+ unmaximized if not overridden by the compositor.
</description>
</request>
<request name="unset_maximized">
<description summary="unmaximize the window">
- Unmaximize the surface.
-
- After requesting that the surface should be unmaximized, the compositor
- will respond by emitting a configure event without the "maximized"
- state. If available, the compositor will include the window geometry
- dimensions the window had prior to being maximized in the configure
- request. The client must then update its content, drawing it in a
- regular state, i.e. potentially with shadow, etc. The client must also
- acknowledge the configure when committing the new content (see
- ack_configure).
-
- It is up to the compositor to position the surface after it was
- unmaximized; usually the position the surface had before maximizing, if
- applicable.
-
- If the surface was already not maximized, the compositor will still
- emit a configure event without the "maximized" state.
+ Unmaximize the surface.
+
+ After requesting that the surface should be unmaximized, the compositor
+ will respond by emitting a configure event without the "maximized"
+ state. If available, the compositor will include the window geometry
+ dimensions the window had prior to being maximized in the configure
+ event. The client must then update its content, drawing it in a
+ regular state, i.e. potentially with shadow, etc. The client must also
+ acknowledge the configure when committing the new content (see
+ ack_configure).
+
+ It is up to the compositor to position the surface after it was
+ unmaximized; usually the position the surface had before maximizing, if
+ applicable.
+
+ If the surface was already not maximized, the compositor will still
+ emit a configure event without the "maximized" state.
+
+ If the surface is in a fullscreen state, this request has no direct
+ effect. It will alter the state the surface is returned to when
+ unmaximized if not overridden by the compositor.
</description>
</request>
<request name="set_fullscreen">
- <description summary="set the window as fullscreen on a monitor">
- Make the surface fullscreen.
+ <description summary="set the window as fullscreen on an output">
+ Make the surface fullscreen.
+
+ After requesting that the surface should be fullscreened, the
+ compositor will respond by emitting a configure event with the
+ "fullscreen" state and the fullscreen window geometry. The client must
+ also acknowledge the configure when committing the new content (see
+ ack_configure).
+
+ The output passed by the request indicates the client's preference as
+ to which display it should be set fullscreen on. If this value is NULL,
+ it's up to the compositor to choose which display will be used to map
+ this surface.
+
+ If the surface doesn't cover the whole output, the compositor will
+ position the surface in the center of the output and compensate with
+ with border fill covering the rest of the output. The content of the
+ border fill is undefined, but should be assumed to be in some way that
+ attempts to blend into the surrounding area (e.g. solid black).
+
+ If the fullscreened surface is not opaque, the compositor must make
+ sure that other screen content not part of the same surface tree (made
+ up of subsurfaces, popups or similarly coupled surfaces) are not
+ visible below the fullscreened surface.
+ </description>
+ <arg name="output" type="object" interface="wl_output" allow-null="true"/>
+ </request>
+
+ <request name="unset_fullscreen">
+ <description summary="unset the window as fullscreen">
+ Make the surface no longer fullscreen.
+
+ After requesting that the surface should be unfullscreened, the
+ compositor will respond by emitting a configure event without the
+ "fullscreen" state.
- You can specify an output that you would prefer to be fullscreen.
- If this value is NULL, it's up to the compositor to choose which
- display will be used to map this surface.
+ Making a surface unfullscreen sets states for the surface based on the following:
+ * the state(s) it may have had before becoming fullscreen
+ * any state(s) decided by the compositor
+ * any state(s) requested by the client while the surface was fullscreen
- If the surface doesn't cover the whole output, the compositor will
- position the surface in the center of the output and compensate with
- black borders filling the rest of the output.
+ The compositor may include the previous window geometry dimensions in
+ the configure event, if applicable.
+
+ The client must also acknowledge the configure when committing the new
+ content (see ack_configure).
</description>
- <arg name="output" type="object" interface="wl_output" allow-null="true"/>
</request>
- <request name="unset_fullscreen" />
<request name="set_minimized">
<description summary="set the window as minimized">
- Request that the compositor minimize your surface. There is no
- way to know if the surface is currently minimized, nor is there
- any way to unset minimization on this surface.
-
- If you are looking to throttle redrawing when minimized, please
- instead use the wl_surface.frame event for this, as this will
- also work with live previews on windows in Alt-Tab, Expose or
- similar compositor features.
+ Request that the compositor minimize your surface. There is no
+ way to know if the surface is currently minimized, nor is there
+ any way to unset minimization on this surface.
+
+ If you are looking to throttle redrawing when minimized, please
+ instead use the wl_surface.frame event for this, as this will
+ also work with live previews on windows in Alt-Tab, Expose or
+ similar compositor features.
</description>
</request>
+ <event name="configure">
+ <description summary="suggest a surface change">
+ This configure event asks the client to resize its toplevel surface or
+ to change its state. The configured state should not be applied
+ immediately. See xdg_surface.configure for details.
+
+ The width and height arguments specify a hint to the window
+ about how its surface should be resized in window geometry
+ coordinates. See set_window_geometry.
+
+ If the width or height arguments are zero, it means the client
+ should decide its own window dimension. This may happen when the
+ compositor needs to configure the state of the surface but doesn't
+ have any information about any previous or expected dimension.
+
+ The states listed in the event specify how the width/height
+ arguments should be interpreted, and possibly how it should be
+ drawn.
+
+ Clients must send an ack_configure in response to this event. See
+ xdg_surface.configure and xdg_surface.ack_configure for details.
+ </description>
+ <arg name="width" type="int"/>
+ <arg name="height" type="int"/>
+ <arg name="states" type="array"/>
+ </event>
+
<event name="close">
<description summary="surface wants to be closed">
- The close event is sent by the compositor when the user
- wants the surface to be closed. This should be equivalent to
- the user clicking the close button in client-side decorations,
- if your application has any...
-
- This is only a request that the user intends to close your
- window. The client may choose to ignore this request, or show
- a dialog to ask the user to save their data...
+ The close event is sent by the compositor when the user
+ wants the surface to be closed. This should be equivalent to
+ the user clicking the close button in client-side decorations,
+ if your application has any.
+
+ This is only a request that the user intends to close the
+ window. The client may choose to ignore this request, or show
+ a dialog to ask the user to save their data, etc.
</description>
</event>
</interface>
<interface name="xdg_popup" version="1">
<description summary="short-lived, popup surfaces for menus">
- A popup surface is a short-lived, temporary surface that can be
- used to implement menus. It takes an explicit grab on the surface
- that will be dismissed when the user dismisses the popup. This can
- be done by the user clicking outside the surface, using the keyboard,
- or even locking the screen through closing the lid or a timeout.
-
- When the popup is dismissed, a popup_done event will be sent out,
- and at the same time the surface will be unmapped. The xdg_popup
- object is now inert and cannot be reactivated, so clients should
- destroy it. Explicitly destroying the xdg_popup object will also
- dismiss the popup and unmap the surface.
-
- Clients will receive events for all their surfaces during this
- grab (which is an "owner-events" grab in X11 parlance). This is
- done so that users can navigate through submenus and other
- "nested" popup windows without having to dismiss the topmost
- popup.
-
- Clients that want to dismiss the popup when another surface of
- their own is clicked should dismiss the popup using the destroy
- request.
+ A popup surface is a short-lived, temporary surface. It can be used to
+ implement for example menus, popovers, tooltips and other similar user
+ interface concepts.
- The parent surface must have either an xdg_surface or xdg_popup
- role.
+ A popup can be made to take an explicit grab. See xdg_popup.grab for
+ details.
- Specifying an xdg_popup for the parent means that the popups are
- nested, with this popup now being the topmost popup. Nested
- popups must be destroyed in the reverse order they were created
- in, e.g. the only popup you are allowed to destroy at all times
- is the topmost one.
+ When the popup is dismissed, a popup_done event will be sent out, and at
+ the same time the surface will be unmapped. See the xdg_popup.popup_done
+ event for details.
- If there is an existing popup when creating a new popup, the
- parent must be the current topmost popup.
+ Explicitly destroying the xdg_popup object will also dismiss the popup and
+ unmap the surface. Clients that want to dismiss the popup when another
+ surface of their own is clicked should dismiss the popup using the destroy
+ request.
+
+ The parent surface must have either the xdg_toplevel or xdg_popup surface
+ role.
- A parent surface must be mapped before the new popup is mapped.
+ A newly created xdg_popup will be stacked on top of all previously created
+ xdg_popup surfaces associated with the same xdg_toplevel.
- When compositors choose to dismiss a popup, they will likely
- dismiss every nested popup as well. When a compositor dismisses
- popups, it will follow the same dismissing order as required
- from the client.
+ The parent of an xdg_popup must be mapped (see the xdg_surface
+ description) before the xdg_popup itself.
The x and y arguments passed when creating the popup object specify
where the top left of the popup should be placed, relative to the
local surface coordinates of the parent surface. See
- xdg_shell.get_xdg_popup.
+ xdg_surface.get_popup. An xdg_popup must intersect with or be at least
+ partially adjacent to its parent surface.
The client must call wl_surface.commit on the corresponding wl_surface
for the xdg_popup state to take effect.
-
- For a surface to be mapped by the compositor the client must have
- committed both the xdg_popup state and a buffer.
</description>
+ <enum name="error">
+ <entry name="invalid_grab" value="0"
+ summary="tried to grab after being mapped"/>
+ </enum>
+
<request name="destroy" type="destructor">
<description summary="remove xdg_popup interface">
- This destroys the popup. Explicitly destroying the xdg_popup
- object will also dismiss the popup, and unmap the surface.
+ This destroys the popup. Explicitly destroying the xdg_popup
+ object will also dismiss the popup, and unmap the surface.
+
+ If this xdg_popup is not the "topmost" popup, a protocol error
+ will be sent.
+ </description>
+ </request>
- If this xdg_popup is not the "topmost" popup, a protocol error
- will be sent.
+ <request name="grab">
+ <description summary="make the popup take an explicit grab">
+ This request makes the created popup take an explicit grab. An explicit
+ grab will be dismissed when the user dismisses the popup, or when the
+ client destroys the xdg_popup. This can be done by the user clicking
+ outside the surface, using the keyboard, or even locking the screen
+ through closing the lid or a timeout.
+
+ If the compositor denies the grab, the popup will be immediately
+ dismissed.
+
+ This request must be used in response to some sort of user action like a
+ button press, key press, or touch down event. The serial number of the
+ event should be passed as 'serial'.
+
+ The parent of a grabbing popup must either be an xdg_toplevel surface or
+ another xdg_popup with an explicit grab. If the parent is another
+ xdg_popup it means that the popups are nested, with this popup now being
+ the topmost popup.
+
+ Nested popups must be destroyed in the reverse order they were created
+ in, e.g. the only popup you are allowed to destroy at all times is the
+ topmost one.
+
+ When compositors choose to dismiss a popup, they may dismiss every
+ nested grabbing popup as well. When a compositor dismisses popups, it
+ will follow the same dismissing order as required from the client.
+
+ The parent of a grabbing popup must either be another xdg_popup with an
+ active explicit grab, or an xdg_popup or xdg_toplevel, if there are no
+ explicit grabs already taken.
+
+ If the topmost grabbing popup is destroyed, the grab will be returned to
+ the parent of the popup, if that parent previously had an explicit grab.
+
+ If the parent is a grabbing popup which has already been dismissed, this
+ popup will be immediately dismissed. If the parent is a popup that did
+ not take an explicit grab, an error will be raised.
+
+ During a popup grab, the client owning the grab will receive pointer
+ and touch events for all their surfaces as normal (similar to an
+ "owner-events" grab in X11 parlance), while the top most grabbing popup
+ will always have keyboard focus.
</description>
+ <arg name="seat" type="object" interface="wl_seat"
+ summary="the wl_seat of the user event"/>
+ <arg name="serial" type="uint" summary="the serial of the user event"/>
</request>
+ <event name="configure">
+ <description summary="configure the popup surface">
+ This event asks the popup surface to configure itself given the
+ configuration. The configured state should not be applied immediately.
+ See xdg_surface.configure for details.
+
+ The x and y arguments represent the position the popup was placed at
+ given the xdg_positioner rule, relative to the upper left corner of the
+ window geometry of the parent surface.
+ </description>
+ <arg name="x" type="int"
+ summary="x position relative to parent surface window geometry"/>
+ <arg name="y" type="int"
+ summary="y position relative to parent surface window geometry"/>
+ <arg name="width" type="int" summary="window geometry width"/>
+ <arg name="height" type="int" summary="window geometry height"/>
+ </event>
+
<event name="popup_done">
<description summary="popup interaction is done">
- The popup_done event is sent out when a popup is dismissed by the
- compositor. The client should destroy the xdg_popup object at this
- point.
+ The popup_done event is sent out when a popup is dismissed by the
+ compositor. The client should destroy the xdg_popup object at this
+ point.
</description>
</event>
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