640528 - incorrect spacing for PS Type 1 font in printed output

Status: NEW

(Core :: Printing: Output, defect)

Description

[Jonathan Kew [:jfkthame]]

See bug 635768 comment 31 and attachment 517661 [details]. Confirmed this problem in current trunk build using the Lucire 4 font (PS Type 1 format) and PDF995 driver. It looks like the glyph advances are being scaled to approximately 4 times their correct values.

Viewing the test page in Print Preview first, and then printing from there, results in correct glyph spacing within each word, but the inter-word spaces are still too large.

Dismissing Print Preview and printing again from the normal page view gives the same result; however, after waiting for a while and then re-printing, the original problem (glyphs too widely spaced within each word) reappears. I'm guessing the factor here may be the expiration of textruns from the cache.

Ah.... opening Print Preview shortly _after_ doing a Print command that gave incorrect spacing can result in incorrect spacing in the Preview window as well - because it's using cached textruns, I assume. I can even achieve a mixture of correct and incorrect textruns in a single Preview, by modifying the document after printing it, so that _some_ of the text requires new runs to be created, and then previewing this before the other runs have expired.

It appears that textruns for Type 1 fonts are not "portable" between the screen and printer DCs.