fullscreen_shell

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 Go to latest Published: Jun 14, 2021 License: BSD-2-Clause Imports: 2 Imported by: 0

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Types

type FullscreenShell 

type FullscreenShell struct {
	client.BaseProxy
	// contains filtered or unexported fields
}

FullscreenShell : displays a single surface per output

Displays a single surface per output.

This interface provides a mechanism for a single client to display simple full-screen surfaces. While there technically may be multiple clients bound to this interface, only one of those clients should be shown at a time.

To present a surface, the client uses either the present_surface or present_surface_for_mode requests. Presenting a surface takes effect on the next wl_surface.commit. See the individual requests for details about scaling and mode switches.

The client can have at most one surface per output at any time. Requesting a surface to be presented on an output that already has a surface replaces the previously presented surface. Presenting a null surface removes its content and effectively disables the output. Exactly what happens when an output is "disabled" is compositor-specific. The same surface may be presented on multiple outputs simultaneously.

Once a surface is presented on an output, it stays on that output until either the client removes it or the compositor destroys the output. This way, the client can update the output's contents by simply attaching a new buffer.

Warning! The protocol described in this file is experimental and backward incompatible changes may be made. Backward compatible changes may be added together with the corresponding interface version bump. Backward incompatible changes are done by bumping the version number in the protocol and interface names and resetting the interface version. Once the protocol is to be declared stable, the 'z' prefix and the version number in the protocol and interface names are removed and the interface version number is reset.

func NewFullscreenShell 

func NewFullscreenShell(ctx *client.Context) *FullscreenShell

NewFullscreenShell : displays a single surface per output

Displays a single surface per output.

This interface provides a mechanism for a single client to display simple full-screen surfaces. While there technically may be multiple clients bound to this interface, only one of those clients should be shown at a time.

To present a surface, the client uses either the present_surface or present_surface_for_mode requests. Presenting a surface takes effect on the next wl_surface.commit. See the individual requests for details about scaling and mode switches.

The client can have at most one surface per output at any time. Requesting a surface to be presented on an output that already has a surface replaces the previously presented surface. Presenting a null surface removes its content and effectively disables the output. Exactly what happens when an output is "disabled" is compositor-specific. The same surface may be presented on multiple outputs simultaneously.

Once a surface is presented on an output, it stays on that output until either the client removes it or the compositor destroys the output. This way, the client can update the output's contents by simply attaching a new buffer.

Warning! The protocol described in this file is experimental and backward incompatible changes may be made. Backward compatible changes may be added together with the corresponding interface version bump. Backward incompatible changes are done by bumping the version number in the protocol and interface names and resetting the interface version. Once the protocol is to be declared stable, the 'z' prefix and the version number in the protocol and interface names are removed and the interface version number is reset.

func (*FullscreenShell) AddCapabilityHandler 

func (i *FullscreenShell) AddCapabilityHandler(h FullscreenShellCapabilityHandler)

AddCapabilityHandler : adds handler for FullscreenShellCapabilityEvent

func (*FullscreenShell) Dispatch 

func (i *FullscreenShell) Dispatch(event *client.Event)

func (*FullscreenShell) PresentSurface 

func (i *FullscreenShell) PresentSurface(surface *client.Surface, method uint32, output *client.Output) error

PresentSurface : present surface for display

Present a surface on the given output.

If the output is null, the compositor will present the surface on whatever display (or displays) it thinks best. In particular, this may replace any or all surfaces currently presented so it should not be used in combination with placing surfaces on specific outputs.

The method parameter is a hint to the compositor for how the surface is to be presented. In particular, it tells the compositor how to handle a size mismatch between the presented surface and the output. The compositor is free to ignore this parameter.

The "zoom", "zoom_crop", and "stretch" methods imply a scaling operation on the surface. This will override any kind of output scaling, so the buffer_scale property of the surface is effectively ignored.

This request gives the surface the role of a fullscreen shell surface. If the surface already has another role, it raises a role protocol error.

func (*FullscreenShell) PresentSurfaceForMode 

func (i *FullscreenShell) PresentSurfaceForMode(surface *client.Surface, output *client.Output, framerate int32) (*FullscreenShellModeFeedback, error)

PresentSurfaceForMode : present surface for display at a particular mode

Presents a surface on the given output for a particular mode.

If the current size of the output differs from that of the surface, the compositor will attempt to change the size of the output to match the surface. The result of the mode-switch operation will be returned via the provided wl_fullscreen_shell_mode_feedback object.

If the current output mode matches the one requested or if the compositor successfully switches the mode to match the surface, then the mode_successful event will be sent and the output will contain the contents of the given surface. If the compositor cannot match the output size to the surface size, the mode_failed will be sent and the output will contain the contents of the previously presented surface (if any). If another surface is presented on the given output before either of these has a chance to happen, the present_cancelled event will be sent.

Due to race conditions and other issues unknown to the client, no mode-switch operation is guaranteed to succeed. However, if the mode is one advertised by wl_output.mode or if the compositor advertises the ARBITRARY_MODES capability, then the client should expect that the mode-switch operation will usually succeed.

If the size of the presented surface changes, the resulting output is undefined. The compositor may attempt to change the output mode to compensate. However, there is no guarantee that a suitable mode will be found and the client has no way to be notified of success or failure.

The framerate parameter specifies the desired framerate for the output in mHz. The compositor is free to ignore this parameter. A value of 0 indicates that the client has no preference.

If the value of wl_output.scale differs from wl_surface.buffer_scale, then the compositor may choose a mode that matches either the buffer size or the surface size. In either case, the surface will fill the output.

This request gives the surface the role of a fullscreen shell surface. If the surface already has another role, it raises a role protocol error.

func (*FullscreenShell) Release 

func (i *FullscreenShell) Release() error

Release : release the wl_fullscreen_shell interface

Release the binding from the wl_fullscreen_shell interface.

This destroys the server-side object and frees this binding. If the client binds to wl_fullscreen_shell multiple times, it may wish to free some of those bindings.

func (*FullscreenShell) RemoveCapabilityHandler 

func (i *FullscreenShell) RemoveCapabilityHandler(h FullscreenShellCapabilityHandler)

type FullscreenShellCapability 

type FullscreenShellCapability uint32
const (
	// FullscreenShellCapabilityArbitraryModes : compositor is capable of almost any output mode
	FullscreenShellCapabilityArbitraryModes FullscreenShellCapability = 1
	// FullscreenShellCapabilityCursorPlane : compositor has a separate cursor plane
	FullscreenShellCapabilityCursorPlane FullscreenShellCapability = 2
)

FullscreenShellCapability : capabilities advertised by the compositor

Various capabilities that can be advertised by the compositor. They are advertised one-at-a-time when the wl_fullscreen_shell interface is bound. See the wl_fullscreen_shell.capability event for more details.

ARBITRARY_MODES: This is a hint to the client that indicates that the compositor is capable of setting practically any mode on its outputs. If this capability is provided, wl_fullscreen_shell.present_surface_for_mode will almost never fail and clients should feel free to set whatever mode they like. If the compositor does not advertise this, it may still support some modes that are not advertised through wl_global.mode but it is less likely.

CURSOR_PLANE: This is a hint to the client that indicates that the compositor can handle a cursor surface from the client without actually compositing. This may be because of a hardware cursor plane or some other mechanism. If the compositor does not advertise this capability then setting wl_pointer.cursor may degrade performance or be ignored entirely. If CURSOR_PLANE is not advertised, it is recommended that the client draw its own cursor and set wl_pointer.cursor(NULL).

func (FullscreenShellCapability) Name 

func (e FullscreenShellCapability) Name() string

func (FullscreenShellCapability) String 

func (e FullscreenShellCapability) String() string

func (FullscreenShellCapability) Value 

func (e FullscreenShellCapability) Value() string

type FullscreenShellCapabilityEvent 

type FullscreenShellCapabilityEvent struct {
	Capability uint32
}

FullscreenShellCapabilityEvent : advertises a capability of the compositor

Advertises a single capability of the compositor.

When the wl_fullscreen_shell interface is bound, this event is emitted once for each capability advertised. Valid capabilities are given by the wl_fullscreen_shell.capability enum. If clients want to take advantage of any of these capabilities, they should use a wl_display.sync request immediately after binding to ensure that they receive all the capability events.

type FullscreenShellCapabilityHandler 

type FullscreenShellCapabilityHandler interface {
	HandleFullscreenShellCapability(FullscreenShellCapabilityEvent)
}

type FullscreenShellError 

type FullscreenShellError uint32
const (
	// FullscreenShellErrorInvalidMethod : present_method is not known
	FullscreenShellErrorInvalidMethod FullscreenShellError = 0
	// FullscreenShellErrorRole : given wl_surface has another role
	FullscreenShellErrorRole FullscreenShellError = 1
)

FullscreenShellError : wl_fullscreen_shell error values

These errors can be emitted in response to wl_fullscreen_shell requests.

func (FullscreenShellError) Name 

func (e FullscreenShellError) Name() string

func (FullscreenShellError) String 

func (e FullscreenShellError) String() string

func (FullscreenShellError) Value 

func (e FullscreenShellError) Value() string

type FullscreenShellModeFeedback 

type FullscreenShellModeFeedback struct {
	client.BaseProxy
	// contains filtered or unexported fields
}

FullscreenShellModeFeedback :

func NewFullscreenShellModeFeedback 

func NewFullscreenShellModeFeedback(ctx *client.Context) *FullscreenShellModeFeedback

NewFullscreenShellModeFeedback :

func (*FullscreenShellModeFeedback) AddModeFailedHandler 

func (i *FullscreenShellModeFeedback) AddModeFailedHandler(h FullscreenShellModeFeedbackModeFailedHandler)

AddModeFailedHandler : adds handler for FullscreenShellModeFeedbackModeFailedEvent

func (*FullscreenShellModeFeedback) AddModeSuccessfulHandler 

func (i *FullscreenShellModeFeedback) AddModeSuccessfulHandler(h FullscreenShellModeFeedbackModeSuccessfulHandler)

AddModeSuccessfulHandler : adds handler for FullscreenShellModeFeedbackModeSuccessfulEvent

func (*FullscreenShellModeFeedback) AddPresentCancelledHandler 

func (i *FullscreenShellModeFeedback) AddPresentCancelledHandler(h FullscreenShellModeFeedbackPresentCancelledHandler)

AddPresentCancelledHandler : adds handler for FullscreenShellModeFeedbackPresentCancelledEvent

func (*FullscreenShellModeFeedback) Destroy 

func (i *FullscreenShellModeFeedback) Destroy() error

func (*FullscreenShellModeFeedback) Dispatch 

func (i *FullscreenShellModeFeedback) Dispatch(event *client.Event)

func (*FullscreenShellModeFeedback) RemoveModeFailedHandler 

func (i *FullscreenShellModeFeedback) RemoveModeFailedHandler(h FullscreenShellModeFeedbackModeFailedHandler)

func (*FullscreenShellModeFeedback) RemoveModeSuccessfulHandler 

func (i *FullscreenShellModeFeedback) RemoveModeSuccessfulHandler(h FullscreenShellModeFeedbackModeSuccessfulHandler)

func (*FullscreenShellModeFeedback) RemovePresentCancelledHandler 

func (i *FullscreenShellModeFeedback) RemovePresentCancelledHandler(h FullscreenShellModeFeedbackPresentCancelledHandler)

type FullscreenShellModeFeedbackModeFailedEvent 

type FullscreenShellModeFeedbackModeFailedEvent struct{}

FullscreenShellModeFeedbackModeFailedEvent : mode switch failed

This event indicates that the attempted mode switch operation failed. This may be because the requested output mode is not possible or it may mean that the compositor does not want to allow it.

Upon receiving this event, the client should destroy the wl_fullscreen_shell_mode_feedback object.

type FullscreenShellModeFeedbackModeFailedHandler 

type FullscreenShellModeFeedbackModeFailedHandler interface {
	HandleFullscreenShellModeFeedbackModeFailed(FullscreenShellModeFeedbackModeFailedEvent)
}

type FullscreenShellModeFeedbackModeSuccessfulEvent 

type FullscreenShellModeFeedbackModeSuccessfulEvent struct{}

FullscreenShellModeFeedbackModeSuccessfulEvent : mode switch succeeded

This event indicates that the attempted mode switch operation was successful. A surface of the size requested in the mode switch will fill the output without scaling.

Upon receiving this event, the client should destroy the wl_fullscreen_shell_mode_feedback object.

type FullscreenShellModeFeedbackModeSuccessfulHandler 

type FullscreenShellModeFeedbackModeSuccessfulHandler interface {
	HandleFullscreenShellModeFeedbackModeSuccessful(FullscreenShellModeFeedbackModeSuccessfulEvent)
}

type FullscreenShellModeFeedbackPresentCancelledEvent 

type FullscreenShellModeFeedbackPresentCancelledEvent struct{}

FullscreenShellModeFeedbackPresentCancelledEvent : mode switch cancelled

This event indicates that the attempted mode switch operation was cancelled. Most likely this is because the client requested a second mode switch before the first one completed.

Upon receiving this event, the client should destroy the wl_fullscreen_shell_mode_feedback object.

type FullscreenShellModeFeedbackPresentCancelledHandler 

type FullscreenShellModeFeedbackPresentCancelledHandler interface {
	HandleFullscreenShellModeFeedbackPresentCancelled(FullscreenShellModeFeedbackPresentCancelledEvent)
}

type FullscreenShellPresentMethod 

type FullscreenShellPresentMethod uint32
const (
	// FullscreenShellPresentMethodDefault : no preference, apply default policy
	FullscreenShellPresentMethodDefault FullscreenShellPresentMethod = 0
	// FullscreenShellPresentMethodCenter : center the surface on the output
	FullscreenShellPresentMethodCenter FullscreenShellPresentMethod = 1
	// FullscreenShellPresentMethodZoom : scale the surface, preserving aspect ratio, to the largest size that will fit on the output
	FullscreenShellPresentMethodZoom FullscreenShellPresentMethod = 2
	// FullscreenShellPresentMethodZoomCrop : scale the surface, preserving aspect ratio, to fully fill the output cropping if needed
	FullscreenShellPresentMethodZoomCrop FullscreenShellPresentMethod = 3
	// FullscreenShellPresentMethodStretch : scale the surface to the size of the output ignoring aspect ratio
	FullscreenShellPresentMethodStretch FullscreenShellPresentMethod = 4
)

FullscreenShellPresentMethod : different method to set the surface fullscreen

Hints to indicate to the compositor how to deal with a conflict between the dimensions of the surface and the dimensions of the output. The compositor is free to ignore this parameter.

func (FullscreenShellPresentMethod) Name 

func (e FullscreenShellPresentMethod) Name() string

func (FullscreenShellPresentMethod) String 

func (e FullscreenShellPresentMethod) String() string

func (FullscreenShellPresentMethod) Value 

func (e FullscreenShellPresentMethod) Value() string

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