In case a text to be layouted contains more than 128 directional characters
it causes the application to crash
The function initScriptAnalysisAndIsolatePairs() collects information of
RTL/LTR chaaracters into vector "isolatePairs". The size of the vector is
capped to 128. Later the function generateDirectionalRuns() iterates
the text again and tries to access items from the previously capped vector
above the upper bound.
Task-number: QTBUG-77819
Change-Id: Ibb7bf12c12b1db22f43ff46236518da3fdeed26a
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
(cherry picked from commit 1232205e32)
Reviewed-by: Jukka Jokiniva <jukka.jokiniva@qt.io>
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
The high part was not copied to output.
Fixes: QTBUG-75559
Change-Id: I9350e52d256510f52b3fcc0015bf879d2c609532
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: Konstantin Ritt <ritt.ks@gmail.com>
If the stretch is set to AnyStretch, then this is taken to mean
we should accept the font as it is. But on mac, there is a special
code path to scale the advances since the shaper doesn't do it
for us, and this neglected to check the stretch, thus it would
scale the advances by 0%.
This happened when loading a file directly in QRawFont and using
this in a QTextLayout, since no part of the code path will attempt
to calculate the stretch in that case. Reproducible in q3dsviewer
in Qt 3D Runtime 2.3.
Task-number: QT3DS-3132
Change-Id: I8f934f3fac41bf7a93c01cca0416d44003119907
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: Konstantin Ritt <ritt.ks@gmail.com>
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
Remove wrong code changing the Bido level of line separators. This
lead to wrong ordering of the string in case the line separator was
meant to be ignored and the string should be rendered in one line. Line
breaks are anyways already reset to the paragraph level by the algorithm
and reordering is done on a line by line basis, so this will work
correctly when doing proper line breaking.
Secondly fix a small bug found while testing the above change, where
we wouldn't set the correct levels for boundary neutrals and explicit
embedding chars because we did that processing before we were fully
done with the BiDi algorithm.
Change-Id: Id88f91cd58d2ab29be864aef34ca1727c1586611
Reviewed-by: Konstantin Ritt <ritt.ks@gmail.com>
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@qt.io>
The algorithm has been treating DirB inconsistently so far.
initScriptAnalysisAndIsolatePairs was treating it differently
than generateDireationalRuns leading to assertions.
It wasn't visible in our test data, as DirB is in almost all cases the
paragraph separator, where we split strings anyway.
Change-Id: I7dc0e7bbcf30ee84d8781ea06097da023e371f05
Fixes: QTBUG-73238
Reviewed-by: Robert Loehning <robert.loehning@qt.io>
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@qt.io>
When a QRawFont is set explicitly on the layout, we would get certain
font properties from the QTextCharFormat instead. But when the properties
had not been set on the QTextCharFormat, we would get the default values
which were always 0/false, not the actual default values used in QFont.
Instead, we calculate a QFont query based on the format and use the
properties from this. This will give us the correct default values
in the cases where they are not overridden.
Change-Id: I53e5103739164c3d9eafaf76fcb4e8bda57bd12a
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
This fixes a regression introduced by change
c3d2d83fcb.
Change-Id: Idf840804c68cd6b1751e122b45e9dd2775af56f5
Fixes: QTBUG-72900
Fixes: QTBUG-72754
Reviewed-by: David Faure <david.faure@kdab.com>
When eliding text we would check for the existence of the ellipsis
character and fall back to using the dot if it was not available.
However, when font merging was in use, we would also use ellipsis
from a fallback font if available. This could cause the metrics
of the text to increase if the fallback font had larger metrics,
and the result was that text could shift when elided.
It is better to prefer the dot from the current font than to use
the ellipsis from a fallback, so we only use the ellipsis if
it is in the main font.
[ChangeLog][QtGui][Text] Fixed a bug where eliding text could
change the height of its bounding rectangle for certain fonts.
Fixes: QTBUG-72553
Change-Id: Ib27fc65302465ddce661801bcc5ae32e55f1aeb9
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
The logclusters where never correctly initialized for tabs or
inline objects.
Change-Id: I376fd2dba19994eb5add24cdb8a93c38bde8cd1e
Fixes: QTBUG-70946
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
Fixes a regression introduced with the update to the bidi
algorithm.
Task-number: QTBUG-69633
Change-Id: I7eac45ed3ffb41f89ea3f793eedcfb6fcdace871
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@qt.io>
Don't show the mark simply because we have unicode code points
larger than 0x590.
Task-number: QTBUG-69665
Change-Id: I9af97383f3bcd52277a5288e7ad06ec240c7e51c
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@qt.io>
When showing line and paragraph separators at an offset from the start
of the string, the end of string pointer would be incorrectly set, and
we would read past the end of the string. If any part of this memory
happened to match the line or paragraph separator, then we would
overwrite it and have a crash.
I couldn't find any reliable way to test this, since the crash depends on
the contents of the memory after the string allocated by the algorithm.
But with an overflow of 100 000 characters, I found that it crashed every
time I ran the test.
[ChangeLog][QtGui][Text] Fixed potential crash when using
QTextOption::ShowLineAndParagraphSeparators.
Task-number: QTBUG-69661
Change-Id: I17d1996b883560bacdc7ce114c8aeb2b0108faea
Reviewed-by: JiDe Zhang <zccrs@live.com>
Reviewed-by: Michal Lazo <xlazom00@gmail.com>
Reviewed-by: Konstantin Ritt <ritt.ks@gmail.com>
When using QTextOption::ShowTabsAndSpaces then spaces and nbsps
would appear the same. So since using the degree symbol to
illustrate nbsps is an accepted standard, we use that and spaces
are illustrated as before.
[ChangeLog][QtGui] Display non-breaking spaces as a degree symbol
when QTextOption::ShowTabsAndSpaces is used.
Task-number: QTBUG-57479
Change-Id: I20c72c9e1640457c034b87587a8975cb73228803
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@qt.io>
To avoid needless detach()ing:
- don't make copy of tabArray unconditionally.
- use qAsConst to avoid detatch in for loop.
- For CoW types, prefer const methods.
Change-Id: I3273316bdd862fee4c66bad8291898a9ed913c60
Reviewed-by: Konstantin Ritt <ritt.ks@gmail.com>
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@qt.io>
The UBA in Qt was out of date, implementing the spec from pre
Unicode 6.3 days. It missed handling of directional isolates and
paired brackets.
This adds a completely new implementation of the UBA, that is
compliant with Unicode 10.
Added the test data from Unicode 10 to the qcomplextext auto
test and ensure that we pass the test suite.
Task-number: QTBUG-57743
Change-Id: Ie2d957bc9775d82f0a51d1c78dc6bd154f22847c
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Don't use out param, use return by value instead.
Also since we don't need CoW replace QVector with std::vector
Change-Id: I5b6ea286b83e2ab959b5734cc1af31cc63c06553
Reviewed-by: Konstantin Ritt <ritt.ks@gmail.com>
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
While touching the code, move initialization from
body of ctor to initializer list
Change-Id: Idfcb4fb771d1414268f8685874395ca54b20621a
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@qt.io>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Remaining uses of Q_NULLPTR are in:
src/corelib/global/qcompilerdetection.h
(definition and documentation of Q_NULLPTR)
tests/manual/qcursor/qcursorhighdpi/main.cpp
(a test executable compilable both under Qt4 and Qt5)
Change-Id: If6b074d91486e9b784138f4514f5c6d072acda9a
Reviewed-by: Ville Voutilainen <ville.voutilainen@qt.io>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
As the non prefixed variants are deprecated
Change-Id: I2ba09d71b9cea5203b54297a3f2332e6d44fedcf
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
In Korean text, they typically can use both the "Western" style of
word wrapping, i.e. breaking on spaces, as well as the East-Asian
style of potentially breaking between all syllables. However,
the Unicode Line Breaking Algorithm, TR14 defaults to breaks on
syllables and specifies a possible tailoring where Hangul is
mapped to the AL class instead:
"When Korean uses SPACE for line breaking, the classes in rule
LB26, as well as characters of class ID, are often tailored to AL"
When using Qt, the user would expect the WordWrap wrap mode to
break between words in Korean. If you want the syllable-based
text layout, you would use WrapAnywhere, probably accompanied
by line justification.
To avoid breaking QTextBoundaryFinder and other potential clients
of QUnicodeTools which depend on getting the precise Unicode
data from the algorithm, we do this by passing a flag from
QTextEngine when initializing the attributes. This way, it
can also be made optional later on, if we decide there is
a reason to add an additional wrap mode specifically to
handle cases like this.
[ChangeLog][Important Behavioral Change] WrapWord now
correctly prefers line breaks between words in Korean text.
WrapAnywhere can still be used to get breaks between syllables
instead.
Done-with: Alexey Turitsyn <alexey.turitsyn@lge.com>
Task-number: QTBUG-47644
Change-Id: I37b45cea2995db7fc2b61e3a0cc681bbdc334678
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
In Qt, we have QTextOption::tabStop, QTextEdit::tabStopWidth and
QPlainTextEdit::tabStopWidth.
Neither are very good names, since the tab stop is neither a
numerical value as in the former, nor does it have any dimensions
that can be measured, as in the latter. Vertical text advances
may also be supported by Qt at some point in the future, at
which point the name would make even less sense.
At the same time, we expose the actual type of the tab stop
distance as floating point in the QTextEdit and QPlainTextEdit
API instead of always rounding it to an int.
To avoid duplicating either of these APIs in Qt Quick, we
introduce tabStopDistance as the common term instead and deprecate
the old names.
[ChangeLog][Text] Introduced tabStopDistance property in
QTextOption, QTextEdit and QPlainTextEdit as replacement for
the inconsistently named tabStop and tabStopWidth properties.
QTextOption::tabStop, QTextEdit::tabStopWidth and
QPlainTextEdit::tabStopWidth have subsequently been deprecated.
Change-Id: Ib7e01387910cddb58adaaaadcd56c0e69edc4bc2
Reviewed-by: Paolo Angelelli <paolo.angelelli@qt.io>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
In the past, we had an undocumented text flag that worked with
one of the QPainter::drawText() overloads. This was never intended
as public API and served a specific cause in Qt WebKit at one point.
But there is a general need for such API, as disabling shaping features
easily gives 25% performance improvement on text rendering even for
fairly short strings.
This patch adds a new style strategy flag to disable shaping and
will just uses the CMAP and HDMX tables to get glyph indices and advances
for the characters. In Qt 6, the TextBypassShaping flag can be removed
completely and be replaced by the style strategy.
[ChangeLog][QtGui][Text] Added QFont::PreferNoShaping style strategy to support
improvements to performance at the expense of some cosmetic font features.
Task-number: QTBUG-56728
Change-Id: I48e025dcc06afe02824bf5b5011702a7e0036f6d
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
More fallthrough-are-errors fixed.
Change-Id: I9a6cb6efe988400ed3f9cb95d1e426dac317e6c4
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
The CoreText backend will remove the PDF token from the end of
the string (instead of producing a zero-width glyph for it),
thus the output will be different from the OpenType backend
and the client will get confused. To fix this, we replace
the PDF token with a visible grapheme starter and handle it after.
Task-number: QTBUG-38113
Change-Id: I1bf6927aa2fa214d33f98afec8eb57bcab639379
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@qt.io>
After e109b8a0f3, it is possible
that the cache will be flushed as a result of inserting a new
font rather than just when the timer event triggers. When doing
superscript and subscript text layouts, we would first get
a regular font engine, then a scaled one, and then reference
the regular font engine *after* getting the scaled one. If the
regular font engine was deleted as a result of inserting the scaled
one, we would get a dangling pointer and crash.
The situation was improved by 49926bb9ef.
You would now to switch between 256 different fonts in the layout
in order to trigger it. The test in the commit will trigger the
crash even with this change.
[ChangeLog][Qt Gui][Text] Fixed a crash that could happen if you
were doing many different text layouts with different fonts
and superscript or subscript alignment.
Task-number: QTBUG-53911
Change-Id: Ia33108252e030eff25924ef1b7c10b9d59b5bc8c
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
5971b88e is not needed in new configure.
This merge also reverts "fix QMAKE_DEFAULT_*DIRS resolution with
apple SDK", 2c9d15d7, because it breaks iOS build with new
configure system.
Conflicts:
mkspecs/features/default_pre.prf
mkspecs/features/mac/toolchain.prf
mkspecs/features/toolchain.prf
src/dbus/qdbusconnection.cpp
src/plugins/sqldrivers/mysql/qsql_mysql.cpp
src/sql/drivers/mysql/qsql_mysql.cpp
src/widgets/widgets/qmenubar.cpp
src/widgets/widgets/qmenubar_p.h
tools/configure/configureapp.cpp
tools/configure/environment.cpp
tools/configure/environment.h
Change-Id: I995533dd334211ebd25912db05b639d6f908aaec
The calculated end position of script lines, consisting of nothing but
trailing spaces, is lower than the start position. This results in not
shaping those script lines.
Task-number: QTBUG-55255
Change-Id: Ib70c1a800d2f70b7f61e3d05c10618e275f45f12
Reviewed-by: Konstantin Ritt <ritt.ks@gmail.com>
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@qt.io>
Replaces our mix of comments for annotating intended absence of break
in switches with the C++17 attribute [[fallthrough]], or its earlier
a clang extension counterpart.
Change-Id: I4b2d0b9b5e4425819c7f1bf01608093c536b6d14
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Replace substring functions that return QString
with corresponding functions that return QStringRef.
Change-Id: I3c485f89352a1ee66076fba74fd486da9349c354
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
With change 208496091d the space character
was replaced with a visual document terminator character. However this
meant that if the whitespace was visualized without the document
terminator character visualized then clicking after the text would cause
it to be positioned off by one.
By bringing back the space character when the terminator is not being
visualized then it will correctly place the cursor at the end of the
text.
Change-Id: I335c1773a37a654f3196bd350562e8f92ffd5369
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@qt.io>
Now that the minimum deployment target (and thus SDK) is 10.9 for OS X
and 7.0 for iOS, all code paths affecting platform versions lower than
the aforementioned are removed.
Change-Id: Id985c7259c4ac069319d88f2c29c9559ae9e8641
Reviewed-by: Jake Petroules <jake.petroules@qt.io>
When ShowLineAndParagraphSeparators was set, we would replace the
separator character in the user's string in some cases, since we never
detached from the input string and just const_cast the pointer to the
shared buffer.
[ChangeLog][QtGui][Text] Fixed bug where a QTextLayout with
ShowLineAndParagraphSeparators would modify the layout's input
string.
Task-number: QTBUG-42033
Change-Id: I92f9100b750f16e52b38b718245c13e5c4a0ebb9
Reviewed-by: Lars Knoll <lars.knoll@theqtcompany.com>
Reviewed-by: Konstantin Ritt <ritt.ks@gmail.com>
Friedemann Kleint
Rainer Keller
Jüri Valdmann
Eskil Abrahamsen Blomfeldt
Lars Knoll
Liang Qi
Jesus Fernandez
Andy Shaw
Anton Kudryavtsev
Qt Forward Merge Bot
Kevin Funk
Giuseppe D'Angelo
Konstantin Ritt
David Schulz
Oswald Buddenhagen
Allan Sandfeld Jensen
Anton Kudryavtsev
Jake Petroules
Liang Qi