Module state 

Graphics state and save/restore stack.

GraphicsState is the Rust equivalent of SplashState from splash/SplashState.h/.cc, with the linked-list *next pointer replaced by a StateStack that owns a Vec<GraphicsState>.

Default values

All defaults match the SplashState constructor exactly:

• CTM = identity [1, 0, 0, 1, 0, 0]
• Stroke/fill alpha = 1.0
• Line cap = Butt, line join = Miter, miter limit = 10.0, flatness = 1.0
• All transfer LUTs = identity
• Overprint mask = 0xFFFF_FFFF
• Clip rect = [0, 0, width-0.001, height-0.001] (intentional sub-pixel inset)

set_transfer semantics

Matches SplashState::setTransfer: the CMYK and DeviceN[0..4] LUTs are derived from the inverted RGB/gray LUTs before the RGB/gray LUTs are overwritten. See SplashState.cc for the detailed rationale.

Structs

GraphicsState

The complete graphics state for one rendering context.

StateStack

A Vec-based save/restore stack of GraphicsState values.

TransferSet

Borrowed references to all transfer LUTs from a GraphicsState.