Enum libR_sys::GEevent

#[repr(u32)]
pub enum GEevent {
    GE_InitState = 0,
    GE_FinaliseState = 1,
    GE_SaveState = 2,
    GE_RestoreState = 6,
    GE_CopyState = 3,
    GE_SaveSnapshotState = 4,
    GE_RestoreSnapshotState = 5,
    GE_CheckPlot = 7,
    GE_ScalePS = 8,
}

Variants

GE_InitState = 0

In response to this event, the registered graphics system should allocate and initialise the systemSpecific structure

Should return R_NilValue on failure so that engine can tidy up memory allocation

GE_FinaliseState = 1

This event gives the registered system a chance to undo anything done in the initialisation.

GE_SaveState = 2

This is sent by the graphics engine prior to initialising the display list. It give the graphics system the chance to squirrel away information it will need for redrawing the the display list

GE_RestoreState = 6

This is sent by the graphics engine prior to replaying the display list. It gives the graphics system the chance to restore any information it saved on the GE_SaveState event

GE_CopyState = 3

Copy system state information to the current device. This is used when copying graphics from one device to another so all the graphics system needs to do is to copy across the bits required for the display list to draw faithfully on the new device.

GE_SaveSnapshotState = 4

Create a snapshot of the system state that is sufficient for the current “image” to be reproduced

GE_RestoreSnapshotState = 5

Restore the system state that is saved by GE_SaveSnapshotState

GE_CheckPlot = 7

When replaying the display list, the graphics engine checks, after each replayed action, that the action produced valid output. This is the graphics system’s chance to say that the output is crap (in which case the graphics engine will abort the display list replay).

GE_ScalePS = 8

The device wants to scale the current pointsize (for scaling an image) This is not a nice general solution, but a quick fix for the Windows device.

Trait Implementations

impl Clone for GEevent

fn clone(&self) -> GEevent

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for GEevent

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

Formats the value using the given formatter.

impl Hash for GEevent

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for GEevent

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

This method tests for self and other values to be equal, and is used by ==.

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

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

impl Copy for GEevent

impl Eq for GEevent

impl StructuralPartialEq for GEevent