IPaintCommand

Interface: IPaintCommand

Represents a canvas paint command, optionally supporting serialization and undo operations.

readonly name: PaintCommandName;

The name or type of the paint command. Used to identify and group similar command operations.

optional point: PointLocation;

Optional point location (e.g. cursor or touch position) associated with the command. This can be used for positioning or context-aware execution.

trigger: PointerTriggerType;

The type of pointer trigger (e.g., mouse, touch, pen) that initiated this command. Helps in distinguishing user input sources.

clone(): IPaintCommand;

Creates a deep copy of this command instance. Useful for storing history or duplicating commands without side effects.

IPaintCommand

A new instance of the same command with cloned properties.

execute(
   mainCtx, 
   backCtx, 
   options): void;

Executes the paint command using the provided rendering contexts.

CanvasRenderingContext2D

The main canvas rendering context where new edits are applied.

CanvasRenderingContext2D

The background rendering context, typically containing the base image or previous state.

Additional configuration or context-specific options required during execution.

void