David Miller (@morphio)

Estimate the byte payload of an image pixel buffer

Estimate a raw pixel buffer from its dimensions and component format. For an 8-bit RGBA buffer, each pixel has four one-byte components. Its array payload is width multiplied by height multiplied by f

13h ago · 2 min readmorphio-images.hashnode.dev

Treat a saved canvas transform as a snapshot

A matrix returned by ctx.getTransform() is a snapshot. Later changes to the context do not update that object, and changing the object does not update the context. Suppose a preview stores its transfo

1d ago · 1 min readmorphio-images.hashnode.dev

Set image smoothing before drawing a scaled canvas image

Set ctx.imageSmoothingEnabled before you call drawImage(). To compare a different setting, draw the image again; the assignment does not change pixels already drawn. The default is true. For a pixel-a

2d ago · 1 min readmorphio-images.hashnode.dev

Give each image upload attempt its own AbortController

Make image-upload cancellation belong to one attempt. A new attempt needs a fresh controller and a cancel control that still points to it. Keep the controller with the job identifier. When the user ca

3d ago · 1 min readmorphio-images.hashnode.dev

Wait for the upload response before saying an image was accepted

Wait for the server response before displaying image accepted. Upload progress describes the request body transfer, so keep its completion separate from the application result. Use progress informatio

4d ago · 1 min readmorphio-images.hashnode.dev

David Miller

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David Miller's blogs

Estimate the byte payload of an image pixel buffer

Treat a saved canvas transform as a snapshot

Set image smoothing before drawing a scaled canvas image

Give each image upload attempt its own AbortController

Wait for the upload response before saying an image was accepted

David Miller

About

Available for

David Miller's blogs

Estimate the byte payload of an image pixel buffer

Treat a saved canvas transform as a snapshot

Set image smoothing before drawing a scaled canvas image

Give each image upload attempt its own AbortController

Wait for the upload response before saying an image was accepted

David Miller

About

Available for

David Miller's blogs

Estimate the byte payload of an image pixel buffer

Treat a saved canvas transform as a snapshot

Set image smoothing before drawing a scaled canvas image

Give each image upload attempt its own AbortController

Wait for the upload response before saying an image was accepted

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David Miller

About

Available for

David Miller's blogs

Estimate the byte payload of an image pixel buffer

Treat a saved canvas transform as a snapshot

Set image smoothing before drawing a scaled canvas image

Give each image upload attempt its own AbortController

Wait for the upload response before saying an image was accepted