This variable was introduced to guard against any bad consequence of the then-new right-to-left
languages support. Let's be bold and get rid of it altogether!
This commits (tries to) reintroduce properly the code that was reverted at the beginning of this branch. This had to be done because these patches interefered with the big refactoring of TextMetrics.cpp.
This commit reintroduces the changes to TextMetrics.cpp contained in c668ebf6, c85dbfea9 and 061509bf.
Remove obsolete code to handle Hebrew and Arabic characters
This is handled by Qt now.
Note that a small optimization (do not draw text that is to the left
of WorkArea) is removed because it cannot be guaranteed to be exact
anymore. It was probably not very useful anyway, and would become
useless once the RowPainter is rewritten to use Row information.
The display of partially-selected word is now done in a new Painter::text method
which displays the string twice with different clip settings. This allows to
catter for the case where Color_selectiontext is not black.
Morover, the code that uses unicode override characters to force the
direction of a string is moved to lstrings.h.
The old implementation of Row::Element::pos2x and x2pos did not work
correctly with Arabic text, because characters can have shapes that
depend on context.
This new implementation leverages QTextLayout in a simplified way,
since only one word is added to the layout.
This allows to make Row::Element::x2pos more readable.
Implement a better solution for painting of RTL text
Instead of relying on character range (Hebrew or Arabic) or character
direction, use RLO unicode character (Right-to-Left override) to force
painting in the direction indicated by the current font. This should
be as close as we can to the old LyX behavior (and requires less
code).
If this code works as intended, it will be possible to remove a lot of
code from Encodings.cpp.
We rely on Qt built-in unicode support for handling Arabic and Hebrew
compose characters. This allows to avoid to use our homegrown
machinery.
This should provide a nice speedup at a low cost and
will eventually allow us to get rid of:
* most of our Arabic/Hebrew machinery in Encodings.cpp,
* Paragraph::transformChar,
* and probably more.
All these problems are related to what happens at the extreme points of rows
* since VIRTUAL elements have a width but no contents, they have to
be treated specially at some places. It would have been better to
avoid testing for them explicitly, but I did not find a way.
* Improve and cleanup the code in breakRow and fix in passing a crash
when clicking on the right of an incomplete MARGIN_MANUAL
paragraph.
* improve the computation of row width in TextMetrics::computeRowMetrics.
* handle properly the case where a position if not found on the row
in both cursorX and getPosNearX (actually, this happens when
selecting).
Fix bug #9040: In RtL documents end-of-paragraph marker shifts the row display
The fact that the bug was still present in the features/str-metrics
branch comes from a goof in the initial implementation of 'virtual'
row elements (completion and end-of-par markers). Now that this is
corrected, everything works as it should.
The fact that the bug is present in master is due to some other reason
that is not useful to investigate now.
Georg Baum [Sat, 5 Jul 2014 13:11:24 +0000 (15:11 +0200)]
Make GraphicsConverter threadsafe
build_script() was already threadsafe, since it used a TempFile, and the
counter was basically not needed, but the new solution makes this obvious
and has the additional advantage that TempFile constructs the real output
file, not a dummy without extension which is not needed.
Georg Baum [Sat, 5 Jul 2014 12:37:55 +0000 (14:37 +0200)]
Fix LaTeXFeatures::useLayout() recursion test
It was broken in two ways: It was not threadsafe, and it did never detect
any recursion, since the counter was decremented for each non-recursive call
and never incremented again.
Georg Baum [Sat, 5 Jul 2014 12:23:43 +0000 (14:23 +0200)]
Make LaTeX export threadsafe.
This is one of the more important threadsafety issues because of export in
thread and simultanous view source. The solution is ugly, but a better one
(see FIXME) would require major rework. These static variables should not
have been used in the first place IMHO.
Georg Baum [Sat, 5 Jul 2014 10:51:40 +0000 (12:51 +0200)]
Make BufferList::fileNames() threadsafe
Using a static variable here was premature optimization: fileNames() is only
called from GuiRef (directly or indirectly), and since this is a dialog the
copying of a FileNameList is not noticeable at all.
Georg Baum [Sat, 5 Jul 2014 09:55:35 +0000 (11:55 +0200)]
Make Formats::isZippedFile() threadsafe
In this case I use a mutex, so the zip status of files is shared between
threads. This is possible because a deadlock can't happen, and it should give
better performance.
Georg Baum [Sat, 5 Jul 2014 09:44:13 +0000 (11:44 +0200)]
Fix Tabular::CellData::operator=()
Don't create an intermediate copy (found by Jean-Marc).
I doubt that this has anything to do with the mystery crash, but it works, and
following the standard patterns is better anyway.
Georg Baum [Fri, 4 Jul 2014 20:19:43 +0000 (22:19 +0200)]
Make theWordList() thread safe.
Without this, you get crashes in a few second when you set the autosave
interval to one second and edit quickly (typing new words etc). The reason
is that the cloned buffer wants to insert words into the word list and
remove them again, but it lives in a different thread.
Georg Baum [Fri, 4 Jul 2014 17:55:44 +0000 (19:55 +0200)]
Fix bug #9162: Missing \use_indices
The lyx2lyx conversion for format 352 was incomplete: It should have been
added the \use_indices setting, but it relied on the fact that the default in
LyX for missing \use_indices is the same as the old format without that
setting used. However, the default might change in the future, and later
lyx2lyx conversions rely on that setting as well.
Georg Baum [Tue, 1 Jul 2014 20:23:06 +0000 (22:23 +0200)]
Make IconvProcessor::Impl noncopyable
The compiler-generated copy-constructor and assigment operators would be wrong
for IconvProcessor::Impl, since cd would be copied, and iconv_close() could
thus be called twice on the same descriptor. The old code did work, but now
IconvProcessor::Impl cannot be copied by accident in the future.
Georg Baum [Tue, 1 Jul 2014 20:13:54 +0000 (22:13 +0200)]
Fix memory leak and assignment operator signature
The IconvProcessor assignment operator did not delete pimpl_ and used a
non-standard signature. If you want to know why the standard signature is
important, read "Effective C++" by Scott Meyers.
Scott Kostyshak [Sat, 28 Jun 2014 02:38:48 +0000 (22:38 -0400)]
Restore compilation of AEA template for TeX Live
After the previous change this document failed to compile under
TeX Live 2013 and 2014. By using a different bib file, it
compiles. For more information, see
https://www.mail-archive.com/lyx-devel@lists.lyx.org/msg183786.html
Georg Baum [Thu, 26 Jun 2014 19:05:40 +0000 (21:05 +0200)]
Work around MSVC warning
The statement
if (pos < from + lyxrc.completion_minlength)
triggers a signed vs. unsigned warning. I don't know why this happens, it
could be a MSVC bug, or related to LLP64 (windows) vs. LP64 (unix)
programming model, or the C++ standard might be ambigous in the section
defining the "usual arithmetic conversions". However, using a temporary
variable is safe and works on all compilers.
The horizontal position of the inset was not taken in account.
The rounding is not always the same as with the old code, but this
is not really important.
Additional changes:
* improve debug output of rows
* remove Bidi& argument of the RowPainter constructor, since it is always
an empty Bifi that is passed. This means that the Bidi class is not
used at all any more in TextMetrics.cpp. The only remaining user is
RowPainter.
Store in the Row object the list of elements it contains
* Row now contains a vector of Elements
* replace Row::dump by a proper << operator
* the width is updated as elements are added
* breakRow is reimplmented to use this infrastructure
Collect properly all strings to compute string metrics
Some changes with respect to existing code
- end of paragraph font is now the one of the text
- words longer than a line are not broken anymore. I think this is not useful if we have horizontal scrollbar
Other than that, the code is still compatible with rowWidth and friends.
Kornel Benko [Sat, 21 Jun 2014 19:15:54 +0000 (21:15 +0200)]
Cmake tests: Optimizing the cmake configuration time
The configuration time suffers mostly on checking, which of the export tests
is to be reverted.
1.) There is a new configuration flag now, "LYX_ENABLE_EXOPRT_TESTS.
If not set (default) no export tests are created.
2.) If set, then the optimization halves the time needed for creation of tests.
The effect on my side:
a.) Until now the time was: ~ 26 seconds
b.) The optimized time is now: ~ 16 seconds
c.) With not enabled export tests: ~ 5 seconds
Scott Kostyshak [Thu, 19 Jun 2014 14:26:15 +0000 (10:26 -0400)]
Update ctests to reflect inputenc changes
There were changes to inputenc and luainputenc that are now
released in Tex Live 2014 that affect several exports. Some
exports that produced good PDFs now fail. Others that produced
incorrect PDFs (with gibberish) now correctly fail. Several
IEEEtran-* exports failed before and now export correct PDFs.
The magic library can detect the charset used by a file. While this
detection is not full proof, actually the library seems to be infallible
as regards the binary nature of a file. So, use libmagic for the detection
and fallback to the previous method if the library is not installed or
its database cannot be loaded.