Struct IODisplayScalerInformation 

#[repr(C)]
pub struct IODisplayScalerInformation {
    pub version: u32,
    pub scalerFeatures: IOOptionBits,
    pub maxHorizontalPixels: u32,
    pub maxVerticalPixels: u32,
    /* private fields */
}

Available on crate feature graphics only.

A structure defining the scaling capabilities of a framebuffer.

This structure is used to define the limits for modes programmed as detailed timings by the OS. A data property with this structure under the key kIOFBScalerInfoKey in a framebuffer will allow the OS to program detailed timings that are scaled to a displays native resolution. Field: __reservedA Set to zero. Field: version Set to zero. Field: __reservedB Set to zero. Field: scalerFeatures Mask of scaling features. The following are defined:
kIOScaleStretchOnly If set the framebuffer can only provide stretched scaling with non-square pixels, without borders.
kIOScaleCanUpSamplePixels If set framebuffer can scale up from a smaller number of source pixels to a larger native timing (eg. 640x480 pixels on a 1600x1200 timing).
kIOScaleCanDownSamplePixels If set framebuffer can scale down from a larger number of source pixels to a smaller native timing (eg. 1600x1200 pixels on a 640x480 timing).
kIOScaleCanScaleInterlaced If set framebuffer can scale an interlaced detailed timing.
kIOScaleCanSupportInset If set framebuffer can support scaled modes with non-zero horizontalScaledInset, verticalScaledInset fields.
kIOScaleCanRotate If set framebuffer can support some of the flags in the kIOScaleRotateFlags mask.
kIOScaleCanBorderInsetOnly If set framebuffer can support scaled modes with non-zero horizontalScaledInset, verticalScaledInset fields, but requires the active pixels to be equal in size to the inset area, ie. can do insets with a border versus scaling an image.
Field: maxHorizontalPixels Maximum number of horizontal source pixels (horizontalScaled).
Field: maxVerticalPixels Maximum number of vertical source pixels (verticalScaled).
Field: __reservedC Set to zero.

See also Apple’s documentation

Fields

version: u32

scalerFeatures: IOOptionBits

maxHorizontalPixels: u32

maxVerticalPixels: u32

Trait Implementations

impl Clone for IODisplayScalerInformation

fn clone(&self) -> IODisplayScalerInformation

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for IODisplayScalerInformation

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Encode for IODisplayScalerInformation

Available on crate feature objc2 only.

const ENCODING: Encoding

The Objective-C type-encoding for this type.

impl PartialEq for IODisplayScalerInformation

fn eq(&self, other: &IODisplayScalerInformation) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl RefEncode for IODisplayScalerInformation

Available on crate feature objc2 only.

const ENCODING_REF: Encoding

The Objective-C type-encoding for a reference of this type.

impl Copy for IODisplayScalerInformation

impl StructuralPartialEq for IODisplayScalerInformation