Copy pageCopy pageCopy this page as Markdown for LLMsView as MarkdownView this page as plain textOpen in ClaudeAsk questions about this pageOpen in ChatGPTAsk questions about this pageOn this pageCanvasStateExtended by CanvasRenderingContext2D OffscreenCanvasRenderingContext2D Methods isContextLost() isContextLost(): boolean; MDN Reference Returns boolean reset() reset(): void; MDN Reference Returns void restore() restore(): void; MDN Reference Returns void save() save(): void; MDN Reference Returns void