Cherry-picking fix from FLTK 1.4 (master).
See report in fltk.coredev as of Jan 16, 2020:
"Fl_Input in readonly mode - wrong behaviour".
Summary: Drag and drop within a read-only Fl_Input (i.e. Fl_Output)
widget would not insert the dragged text (correct) but removed
the dragged text from the widget (error). This is now fixed.
Fl_Pack::draw() sometimes resizes itself. This must be followed
by a call to Fl_Group::init_sizes() as indicated in that function's doc:
"If you rearrange the widgets in your group, call this method to register
the new arrangement with the Fl_Group that contains them."
Revert commit 958d912ffc using 'XSetLocaleModifiers("@im=");'
which was incorrect (STR 3192).
Apply fix for STR 3502, using 'XSetLocaleModifiers("");' which appears
to be the correct solution for using X Input Methods (XIM).
Subject "Bug in 1.4 Displaying PNG under x64 Kernel x86 app." in flak.general
contains a report by Darren Legge that presents the problem,
and a later post stating the code modification does fix the problem.
This is an (edited) excerpt of https://www.fltk.org/roadmap.php in a
slightly different format (downloaded with `wget`) and redacted to
contain only FLTK 1.3 and 1.4.
Recent Linux distribution have replaced the freetype-config command
by pkg-config. The fix tries the new procedure with pkg-config and
falls back to freetype-config if the new procedure fails.
The given position to insert a new item was not checked against the
valid range so the program could crash if a position less than zero
or greater than children() was given. The position is now clamped to
the valid range, i.e. the item is either prepended or appended.
Fixes issue #18.
Backported from 1.4, commit 9b272cfa4e
macOS normally previews a dead key and then replaces the preview by the final text
after the second key is typed.
macOS ≥ 10.7 also opens an auxiliary window to help choosing among possible characters
after some keys (e.g., n, c, o, a) are pressed and maintained for a while.
The problem fixed here is that after an auxiliary window has been used,
dead keys are no longer previewed.
That problem emerged at some undetermined point before 10.14 and after 10.7.
test/fracviewer.cxx wouldn't be compiled if the ABI version was
changed with configure and `make' was executed w/o `make clean'.
Add 'fracviewer.cxx' to list of source files to fix this.
Also add missing unittest_scrollbarsize.cxx to dependencies of
unittests.o.
Finally run `makedepend' to update all dependencies.
Loading GIF images could crash if there was no "Global Color Table"
but individual "Local Color Tables" with individual images.
Now local color tables are used correctly if available, but images that
lack both global and local color tables are being loaded with a default
(gray) color table and a warning is issued with Fl::warning().
The default color table uses black and white in the first two indices
as recommended by the standard.
