Closed Bug 119265 Opened 23 years ago Closed 17 years ago

[ps] improve GetWidth by using unicode width data

Categories

(Core :: Printing: Output, defect)

Product:
Core
Component:
Printing: Output
Platform:
x86
Linux
Type:
defect
Priority:
Not set
Severity:
normal

Tracking

()

Status:
RESOLVED FIXED
Milestone:
Future

People

(Reporter: ftang, Assigned: ftang)

Details

 
I file this bug because I see some improvement opportunity from bug 100324. We
could do better than that if we take the unicode asian width database. 
we can take 
http://www.unicode.org/Public/3.1-Update1/EastAsianWidth-5.txt and cacular width
depend on the unicode property (
half width for non CJK, full width for CJK , zero width for combining mark. 
read http://www.unicode.org/unicode/reports/tr11/ for details.

jshin@pantheon.yale.edu and kataki, can you work on that ?
Wow, I am lost?????? What is the bug here? Unfuture if you want me to take a
look again.
Status: NEW → ASSIGNED
Target Milestone: --- → Future
The issue is when we try to measure the width of string on PostScript code, we
may not have enough information from the AFM because the AFM may not include
those character. The current code do a estimation and make all character >
Unicode U+0100 as a fix number 1056?? Somehow that number is good for
Chinese/Korean/Japanese because they are usually double width as a ASCII
character. However, that make Cyrillic/Greak pagek look funky since we reserved
too many space here. Also, there are some character are ZERO-width such as vowel
sign or combining mark for some language. So a better way to estimate it is to
base on unicode character data base and estimate 1056 for those character in the
CJK area, estimate about 600 to those character in Alphabatic writting ssytem.
and estimate 0 for those character we know are control code or zero-width. 

I take this bug back since I don't think you should own it. I will put on the
future list and wait for other contributor to pick it up.
Assignee: rods → ftang
Status: ASSIGNED → NEW
Would this help with bug 40130?
push off for future project.
Status: NEW → ASSIGNED
Summary: improve GetWidth by using unicode width data → [ps] improve GetWidth by using unicode width data
Mass-resolving some bugs related to the old unix printing system. The old code has been removed from the tree, and the bugs don't occur with the cairo-based printing code.
Status: ASSIGNED → RESOLVED
Closed: 17 years ago
Resolution: --- → FIXED
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