fuchsia.hardware.backlight

PROTOCOLS

Device

Defined in fuchsia.hardware.backlight/backlight.fidl

GetStateNormalized

Gets the current backlight brightness as a percentage value between 0.0 and 1.0

Request

Name	Type

Response

Name	Type
`result`	`Device_GetStateNormalized_Result`

SetStateNormalized

Sets the current backlight brightness as a percentage value between 0.0 and 1.0

Request

Name	Type
`state`	`State`

Response

Name	Type
`result`	`Device_SetStateNormalized_Result`

GetStateAbsolute

Gets the current backlight brightness in nits

Request

Name	Type

Response

Name	Type
`result`	`Device_GetStateAbsolute_Result`

SetStateAbsolute

Sets the current backlight brightness in nits

Request

Name	Type
`state`	`State`

Response

Name	Type
`result`	`Device_SetStateAbsolute_Result`

GetMaxAbsoluteBrightness

Gets the maximum supported backlight brightness in nits, if known. Otherwise returns error ZX_ERR_NOT_SUPPORTED.

Request

Name	Type

Response

Name	Type
`result`	`Device_GetMaxAbsoluteBrightness_Result`

STRUCTS

Device_GetStateNormalized_Response

Defined in fuchsia.hardware.backlight/backlight.fidl

Name	Type	Description	Default
`state`	`State`		No default

Device_SetStateNormalized_Response

Defined in fuchsia.hardware.backlight/backlight.fidl

Name	Type	Description	Default

Device_GetStateAbsolute_Response

Defined in fuchsia.hardware.backlight/backlight.fidl

Name	Type	Description	Default
`state`	`State`		No default

Device_SetStateAbsolute_Response

Defined in fuchsia.hardware.backlight/backlight.fidl

Name	Type	Description	Default

Device_GetMaxAbsoluteBrightness_Response

Defined in fuchsia.hardware.backlight/backlight.fidl

Name	Type	Description	Default
`max_brightness`	`float64`		No default

State

Defined in fuchsia.hardware.backlight/backlight.fidl

Name Type Description Default

backlight_on bool No default

Name	Type	Description	Default
`backlight_on`	`bool`		No default
`brightness`	`float64`	`brightness` can either be: The unitless brightness value on a linear scale where 0.0 is the minimum brightness and 1.0 is the maximum brightness - represents the current / desired brightness as a percentage within the supported range. Used by the `GetStateNormalized` / `SetStateNormalized` calls. Absolute brightness in nits. Used by the `GetStateAbsolute` / `SetStateAbsolute` calls.	No default

brightness

float64

brightness can either be:

The unitless brightness value on a linear scale where 0.0 is the minimum brightness and 1.0 is the maximum brightness - represents the current / desired brightness as a percentage within the supported range. Used by the GetStateNormalized / SetStateNormalized calls.
Absolute brightness in nits. Used by the GetStateAbsolute / SetStateAbsolute calls.

No default

UNIONS

Device_GetStateNormalized_Result

Defined in fuchsia.hardware.backlight/backlight.fidl

Name	Type	Description
`response`	`Device_GetStateNormalized_Response`
`err`	`zx/status`

Device_SetStateNormalized_Result

Defined in fuchsia.hardware.backlight/backlight.fidl

Name	Type	Description
`response`	`Device_SetStateNormalized_Response`
`err`	`zx/status`

Device_GetStateAbsolute_Result

Defined in fuchsia.hardware.backlight/backlight.fidl

Name	Type	Description
`response`	`Device_GetStateAbsolute_Response`
`err`	`zx/status`

Device_SetStateAbsolute_Result

Defined in fuchsia.hardware.backlight/backlight.fidl

Name	Type	Description
`response`	`Device_SetStateAbsolute_Response`
`err`	`zx/status`

Device_GetMaxAbsoluteBrightness_Result

Defined in fuchsia.hardware.backlight/backlight.fidl

Name	Type	Description
`response`	`Device_GetMaxAbsoluteBrightness_Response`
`err`	`zx/status`