Height of the image become 0 during the resizing

[jczapiewski-cksource]

I'm trying to resize an image to given width without setting a height property for a 1px height image. Example image dimensions can be like 900px x 1px.

As a result, the following errors are thrown:

GLib-GObject-WARNING **: 12:34:55.444: value "nan" of type 'gdouble' is invalid or out of range for property 'vscale' of type 'gdouble'
GLib-GObject-WARNING **: 12:34:55.445: value "0" of type 'gint' is invalid or out of range for property 'height' of type 'gint'
embed: parameter height not set

The question is, is it possible to set a minimum dimension value to avoid cases like this (eg. setting the height to 1px when the processed image is smaller)? I've found a few threads suggesting using max and min but it seems to be no longer valid nor these things are not mentioned in the documentation. I know that I can calculate the dimensions based on the buffer but I'm wondering if it is possible to handle this somehow automatically.

Thanks in advance!

[lovell]

There should be logic to prevent this, but it's possible there are still edge cases. Please can you provide complete, standalone code and a sample input image that allows someone else to reproduce this.

[jczapiewski-cksource]

Thanks for the response. I've created a simple repository to reproduce the issue: https://github.com/jczapiewski-cksource/sharp-resize-issue. The sample code and the image are included.

[lovell]

Thank you, I can reproduce this. It looks like a bug in the shrink-on-load handling that can affect very thin JPEG images where one dimension is 3 pixels or less - leave it with me.

[lovell]

Commit ed5d753 fixes this and adds a test case that was previously failing. Thank you for reporting!

[jczapiewski-cksource]

Thank You!

[lovell]

v0.28.2 now available with the fix for this.