Bug 491459

Created attachment 172420 [details]
PDF document (zipped) with rotated page

Highlighter and Text extractor fail on rotated pdf-pages

SUMMARY
Some pdf documents include rotated pages (see attached pdf-file). The Highlighter tool fails to properly highlight the corresponding text. The text selection tool (including the Area selector) fail to properly select the corresponding text.

Rotating clockwise does not correct the errors.

STEPS TO REPRODUCE
1. Open attached pdf file
2. Go to page 7, which is rotated
3.a. Select highlighter and try to highlight e.g. "Homo sapiens"
3.b. Select "Text selection" and try to copy the first peptide sequence ("KEFSEV...")
3.c. Select the "Area selection" and try to copy the same first sequence
4. Repeat the steps with the page rotated clockwise

OBSERVED RESULT
3.a. The highlighting is very wrong and very annoying.
3.b. Nothing useful is selected
3.c. If the area is narrow enough, then something usable can be selected. However, the text is rebersed!
"V
 Y K E L D Q I R G E V  E  S   F  E  K "
=> should be "KEFSEV..."
Note: MS Edge is actually able to select the proper text: "KEFSEVEGRIQDLEKYV", even without rotating the page!


EXPECTED RESULT
Highlighter should highlight the proper line. Text selection should select line by line.

SOFTWARE/OS VERSIONS
Windows: 10

ADDITIONAL INFORMATION
Is partly related to:
https://bugs.kde.org/show_bug.cgi?id=334297
- but that bug does not mention the Text selection;
- the page in this bug is also slightly more complex;