Interface XdgPositionerRequestsV6
- All Superinterfaces:
XdgPositionerRequests
,XdgPositionerRequestsV2
,XdgPositionerRequestsV3
,XdgPositionerRequestsV4
,XdgPositionerRequestsV5
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 invalid_positioner error.
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Field Summary
Fields -
Method Summary
Modifier and TypeMethodDescriptionvoid
destroy
(XdgPositionerResource requester) destroy the xdg_positioner objectvoid
setAnchor
(XdgPositionerResource requester, int anchor) set anchor rectangle anchorvoid
setAnchorRect
(XdgPositionerResource requester, int x, int y, int width, int height) set the anchor rectangle within the parent surfacevoid
setConstraintAdjustment
(XdgPositionerResource requester, int constraintAdjustment) set the adjustment to be done when constrainedvoid
setGravity
(XdgPositionerResource requester, int gravity) set child surface gravityvoid
setOffset
(XdgPositionerResource requester, int x, int y) set surface position offsetvoid
setParentConfigure
(XdgPositionerResource requester, int serial) set parent configure this is a response tovoid
setParentSize
(XdgPositionerResource requester, int parentWidth, int parentHeight) Set the parent window geometry the compositor should use when positioning the popup.void
setReactive
(XdgPositionerResource requester) continuously reconstrain the surfacevoid
setSize
(XdgPositionerResource requester, int width, int height) set the size of the to-be positioned rectangle
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Field Details
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VERSION
static final int VERSION- See Also:
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Method Details
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destroy
destroy the xdg_positioner objectNotify the compositor that the xdg_positioner will no longer be used.
- Specified by:
destroy
in interfaceXdgPositionerRequests
- Specified by:
destroy
in interfaceXdgPositionerRequestsV2
- Specified by:
destroy
in interfaceXdgPositionerRequestsV3
- Specified by:
destroy
in interfaceXdgPositionerRequestsV4
- Specified by:
destroy
in interfaceXdgPositionerRequestsV5
- Parameters:
requester
- The protocol object that made the request.
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setSize
set the size of the to-be positioned rectangleSet 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.
- Specified by:
setSize
in interfaceXdgPositionerRequests
- Specified by:
setSize
in interfaceXdgPositionerRequestsV2
- Specified by:
setSize
in interfaceXdgPositionerRequestsV3
- Specified by:
setSize
in interfaceXdgPositionerRequestsV4
- Specified by:
setSize
in interfaceXdgPositionerRequestsV5
- Parameters:
requester
- The protocol object that made the request.width
- width of positioned rectangleheight
- height of positioned rectangle
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setAnchorRect
set the anchor rectangle within the parent surfaceSpecify 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.
- Specified by:
setAnchorRect
in interfaceXdgPositionerRequests
- Specified by:
setAnchorRect
in interfaceXdgPositionerRequestsV2
- Specified by:
setAnchorRect
in interfaceXdgPositionerRequestsV3
- Specified by:
setAnchorRect
in interfaceXdgPositionerRequestsV4
- Specified by:
setAnchorRect
in interfaceXdgPositionerRequestsV5
- Parameters:
requester
- The protocol object that made the request.x
- x position of anchor rectangley
- y position of anchor rectanglewidth
- width of anchor rectangleheight
- height of anchor rectangle
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setAnchor
set anchor rectangle anchorDefines 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.
- Specified by:
setAnchor
in interfaceXdgPositionerRequests
- Specified by:
setAnchor
in interfaceXdgPositionerRequestsV2
- Specified by:
setAnchor
in interfaceXdgPositionerRequestsV3
- Specified by:
setAnchor
in interfaceXdgPositionerRequestsV4
- Specified by:
setAnchor
in interfaceXdgPositionerRequestsV5
- Parameters:
requester
- The protocol object that made the request.anchor
- anchor
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setGravity
set child surface gravityDefines 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. If the gravity is not in the ‘gravity’ enum, an invalid_input error is raised.
- Specified by:
setGravity
in interfaceXdgPositionerRequests
- Specified by:
setGravity
in interfaceXdgPositionerRequestsV2
- Specified by:
setGravity
in interfaceXdgPositionerRequestsV3
- Specified by:
setGravity
in interfaceXdgPositionerRequestsV4
- Specified by:
setGravity
in interfaceXdgPositionerRequestsV5
- Parameters:
requester
- The protocol object that made the request.gravity
- gravity direction
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setConstraintAdjustment
set the adjustment to be done when constrainedSpecify 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.
- Specified by:
setConstraintAdjustment
in interfaceXdgPositionerRequests
- Specified by:
setConstraintAdjustment
in interfaceXdgPositionerRequestsV2
- Specified by:
setConstraintAdjustment
in interfaceXdgPositionerRequestsV3
- Specified by:
setConstraintAdjustment
in interfaceXdgPositionerRequestsV4
- Specified by:
setConstraintAdjustment
in interfaceXdgPositionerRequestsV5
- Parameters:
requester
- The protocol object that made the request.constraintAdjustment
- bit mask of constraint adjustments
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setOffset
set surface position offsetSpecify 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.
- Specified by:
setOffset
in interfaceXdgPositionerRequests
- Specified by:
setOffset
in interfaceXdgPositionerRequestsV2
- Specified by:
setOffset
in interfaceXdgPositionerRequestsV3
- Specified by:
setOffset
in interfaceXdgPositionerRequestsV4
- Specified by:
setOffset
in interfaceXdgPositionerRequestsV5
- Parameters:
requester
- The protocol object that made the request.x
- surface position x offsety
- surface position y offset
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setReactive
continuously reconstrain the surfaceWhen set reactive, the surface is reconstrained if the conditions used for constraining changed, e.g. the parent window moved.
If the conditions changed and the popup was reconstrained, an xdg_popup.configure event is sent with updated geometry, followed by an xdg_surface.configure event.
- Specified by:
setReactive
in interfaceXdgPositionerRequestsV3
- Specified by:
setReactive
in interfaceXdgPositionerRequestsV4
- Specified by:
setReactive
in interfaceXdgPositionerRequestsV5
- Parameters:
requester
- The protocol object that made the request.
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setParentSize
Set the parent window geometry the compositor should use when positioning the popup. The compositor may use this information to determine the future state the popup should be constrained using. If this doesn't match the dimension of the parent the popup is eventually positioned against, the behavior is undefined.
The arguments are given in the surface-local coordinate space.
- Specified by:
setParentSize
in interfaceXdgPositionerRequestsV3
- Specified by:
setParentSize
in interfaceXdgPositionerRequestsV4
- Specified by:
setParentSize
in interfaceXdgPositionerRequestsV5
- Parameters:
requester
- The protocol object that made the request.parentWidth
- future window geometry width of parentparentHeight
- future window geometry height of parent
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setParentConfigure
set parent configure this is a response toSet the serial of an xdg_surface.configure event this positioner will be used in response to. The compositor may use this information together with set_parent_size to determine what future state the popup should be constrained using.
- Specified by:
setParentConfigure
in interfaceXdgPositionerRequestsV3
- Specified by:
setParentConfigure
in interfaceXdgPositionerRequestsV4
- Specified by:
setParentConfigure
in interfaceXdgPositionerRequestsV5
- Parameters:
requester
- The protocol object that made the request.serial
- serial of parent configure event
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