CanvasBuffer

Internal DOM adapter around PixelBuffer. PixelArtCanvas uses it to keep raw pixels and an HTMLCanvasElement in sync. It is not exported from the package root.

canvas() returns the working canvas, and loadTexture() replaces its contents from a canvas or image.

Events

Event	Payload	Emitted by
changed	{ bounds: SelectionRect }	drawPixels, drawColorGroups, drawRegion, drawMaskedRegion
resized	{ size: Vec2 }	resize
replaced	{ size: Vec2 }	loadTexture

bounds is the area the mutation touched: the bounding box of the written positions for the pixel paths, and the target rect for the region paths. A consumer holding a texture over canvas() can repaint just that area.

resized and replaced are distinct because they mean different things downstream. resize() keeps the same canvas element and only changes its dimensions, so a bound texture needs a refresh flag. loadTexture() swaps the element, so a bound texture has to re-point at the new one.

None of the three fire for replacePixels() or copyToMaster(); callers drive those explicitly.

PixelDocument forwards all three, and PixelArtCanvas.document exposes it.

Unlike PixelBuffer.pixels(), CanvasBuffer.pixels() returns a copy.