[XGC-18] PNG's - warn if resolution can't be determined

• Type: Improvement
• Status: Open
• Resolution: Unresolved
• Affects Version/s: 2.6
• Component/s: image codecs
• Environment: Operating System: All; Platform: All
• Assignee: XML Graphics Project Mailing List
• Reporter: Jason Harrop
• Created: 04/Jan/09 03:25
• Updated: 26/Jun/21 20:28

Description

If, for a PNG image, ImageMagick's identify says:

Resolution: 320x320
Units: Undefined <----------------

then ImageInfo will use a default value, using Toolkit.getDefaultToolkit().getScreenResolution(), which in my case is 160.

Nothing wrong with that I suppose, but it would be helpful if a warning was logged or something, so you knew to fix the image.

When PreloaderImageIO.preloadImage does:

ImageIOUtil.extractResolution(iiometa, size);

it is finding the Dimension child, but not "HorizontalPixelSize" or VerticalPixelSize (these are null).