51 lines
2.4 KiB
Plaintext
51 lines
2.4 KiB
Plaintext
FLTK 1.4 is based on the final release of FLTK 1.3.4. Later updates
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have been backported to 1.3.5 - 1.3.9. FLTK 1.3.10 with the latest
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backports is planned to be released shortly after 1.4.0 or 1.4.1.
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FLTK 1.4 is intended to be mostly API compatible with FLTK 1.3.x so
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you don't need to change source code when you switch to FLTK 1.4.
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However, all programs must be recompiled with FLTK 1.4 because the
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ABI (Application Binary Interface) has changed.
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Potential source code conflicts are documented in chapter "Migrating
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Code from FLTK 1.3 to 1.4" of the user documentation [1].
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FLTK 1.4 adds some new widgets (e.g. Fl_Flex, Fl_Grid) for flexible GUI
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layout, Fl_Scheme_Choice for scheme selection by users, and more.
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Other widgets (Fl_Tabs, Fl_Tile, Fl_Spinner etc.) have been improved
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for better user experience.
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FLTK 1.4 supports HighDPI displays under Linux/Unix and Windows and
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improves HighDPI support on macOS. The initial screen scaling factor is
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read from the system and application windows can be zoomed (in/out/reset)
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by the user with ctrl/+/-/0 shortcuts, respectively.
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CMake support has been improved significantly and requires CMake 3.15 or
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higher, autotools/configure/make is still supported. The latter will be
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dropped in the next minor release (1.5.0).
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macOS is supported up to 15.0 "Sequoia".
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The platform dependent code in FLTK 1.4 was rewritten to enable easier
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porting to new platforms. Basically all platform dependent code has
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been isolated and implemented in virtual methods of "driver" classes.
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For details see 'src/drivers' and subdirectories.
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FLTK is now compatible with the Wayland platform on current Linux
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distributions and FreeBSD. The default build of the library on these
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platforms supports both X11 and Wayland in a "hybrid" library. Programs
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compiled and linked to this library start using Wayland if it is
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available at runtime and fall back to using X11 if not. Programs using
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X11 specific code that are not yet ported to Wayland can still be used
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on pure X11 systems or by disabling the Wayland support on startup so
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they fall back to using X11 only. This requires 'XWayland' support on
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Wayland enabled (Linux) systems.
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The current development branch on GitHub [2] is `master`. This will be
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changed to `branch-1.4` when development of FLTK 1.5.0 begins and 1.4
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will move to maintenance mode.
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[1] https://www.fltk.org/doc-1.4/ (HTML) and
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https://www.fltk.org/doc-1.4/fltk.pdf (PDF)
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[2] https://github.com/fltk/fltk.git
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