pdfjs-dist

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Commit Graph

Author	SHA1	Message	Date
Jonas Jenwald	77c6ed5389	Attempt to ignore multiple identical Tf (setFont) commands in `PartialEvaluator_getTextContent` (issue 5808) This patch improves the performance of issue 5808, but I'm not sure if it's enough to call it fixed. On average, this patch reduces the number of textLayer div's by a factor of 3, and it also reduces the time spend in `getTextContent` by a factor of ~2. The PDF file is generated by `Scribus PDF`, which for reasons I cannot understand is placing redundant `Tf` commands before every showText command. Note how the PDF file also contains lots of (basically) identical fonts, but with slightly different names, which causes unnecessary font-switching. This causes some unnecessary breaking of textLayer div's, but this issue cannot be easily worked around.	9 years ago

Author

SHA1

Message

Date

Jonas Jenwald

77c6ed5389

Attempt to ignore multiple identical Tf (setFont) commands in `PartialEvaluator_getTextContent` (issue 5808)

This patch improves the performance of issue 5808, but I'm not sure if it's enough to call it fixed. On average, this patch reduces the number of textLayer div's by a factor of 3, and it also reduces the time spend in `getTextContent` by a factor of ~2.

The PDF file is generated by `Scribus PDF`, which for reasons I cannot understand is placing redundant `Tf` commands before *every* showText command.
Note how the PDF file also contains lots of (basically) identical fonts, but with slightly different names, which causes unnecessary font-switching. This causes some unnecessary breaking of textLayer div's, but this issue cannot be easily worked around.

9 years ago

1 Commits (86ba634c97e60dee87fc1d5bd17867d062e40db4)