Remove all trace of Qt4 support. The different elements have been
considered carefully before removal.
The only changes that need to be done concern Windows and macOS
compilation instruction and will need to be taken care of by the
respective maintainers before prerelease.
The file TODO.killqt4 lists what remains to be done.
An export can be canceled by clicking on the status bar icon or by
executing export-cancel (e.g., via Document > Cancel Background
Process).
The centralized code kills the script and updates the status bar
icons.
No change in functionality intended.
Related commits: 70a71a82 and 01abab9a.
This is consistent with 70a71a82 (which is about the code path
through clicking on the 'x' status bar icon).
In the next commit I'll make a function to centralize this sequence
of killing a script and emitting the scriptKilled() signal.
Qt >= 5 refuses to display them. We work around this in lib/symbols
already, but make sure we do not try to display math glyphs at these
code points anyway.
Fixes bug #8493.
Qt4 code has been identidifed by
git grep -l 'QT_VERSION.*\(0x050000\|0x04\)' src
Uses of QT_VERSION_CHECK have been checked too.
been used to remember what places need further work.
Then remaining Qt4 references have been searched using
git grep -i qt4
git grep -i 'qt 4'
and relevant issues have been either fixed or noted in the new
TODO.killqt4 file.
When is it detected that our zero-width characters are not really
zero-width, avoid to use them altogether. Currently, this is known to
happen in Qt4 with monospace fonts.
This allow to remove the special Qt4 code in breaskString_helper.
Related to bug #10117.
This allows to create a new version that takes an already built
TextLayoutHelper struct as parameter.
No intended change.
See discussion in bug #10117.
In order to work around the Qt row breaking algorithm, which considers
multiple spaces as one at QTextLine break, we insert word_joiner unicode
characters beteween each pair of spaces.
The TextLayoutHelper class makes it easy to handle that.
Update Row::Element::rtrim() to only remove one space at row end.
Update support::countExpanders() to count all spaces, without special
handling for consecutive ones.
Fixes bug #10117.
This new code allows to get rid of some hardcoded stuff and will be a
foundation for handling of consecutive spaces.
This code can be used in the future for getTextLayout, x2pos, and
pos2x in order to streamline code. Actually some features as the naked
parameter are here to prepare for this second set of changes.
No change intended. The modified code is much clearer, though.
Related to bug #10117.
10MB cache is not so large after all, and it can be helpful with
Scott's perverse examples.
This reverts commit 2abe7714078a0f772af2e3e2675d6f2b3c054e08.
Fixes part of bug #12598.
Previously, only the suggestions starting with the current input were
shown.
Contains the following minor improvements:
- Add space to indicate when only one suggestion is found
- Select first item in suggestion-list in order to make selecting with
arrow keys more intuitive
- Fix selection with Shift+Up/Down in text-field
Fix for bug #12572.
