Struct GraphicsStateTracker 

pub struct GraphicsStateTracker { /* private fields */ }

Tracks graphics state across a content stream.

After construction, state_at(index) returns the graphics state before that operation executes.

Implementations

impl GraphicsStateTracker

pub fn from_operations(ops: &[Operation]) -> Self

Walk operations and record a snapshot before each one.

pub fn state_at(&self, index: usize) -> Option<&GraphicsSnapshot>

Get the graphics state snapshot before operation at index.

pub fn len(&self) -> usize

Number of tracked snapshots (equals number of operations).

pub fn is_empty(&self) -> bool

Whether there are no snapshots.

Trait Implementations

impl Clone for GraphicsStateTracker

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for GraphicsStateTracker

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

Formats the value using the given formatter.