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FLTK - Fast Light Tool Kit - https://github.com/fltk/fltk - cross platform GUI development
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Albrecht Schlosser ecc47d0cc3 Refactor and simplify "arrow drawing" in widgets 
"Arrows" in widgets are those GUI elements mostly represented by
triangles pointing in a particular direction as in scrollbars,
choice widgets, some menus, valuators and Fl_Counter widgets.

The code has been simplified and standardized such that all these
GUI elements are drawn identically per FLTK scheme.

Widget authors no longer need to write code to calculate arrow sizes
and draw polygons etc.

Different schemes can and do implement different drawing functions.

Todo: see comments "FIXME_ARROW" in src/Fl_Menu_Button.cxx and
      src/Fl_Menu.cxx
2022-11-22 19:32:54 +01:00
.github Improve wording of GitHub Issue Templates 2022-09-30 18:01:04 +02:00
cairo Fix whitespace errors and dependencies 2022-11-16 21:10:14 +01:00
CMake CMake+Wayland: check for presence of required software modules 2022-11-18 09:10:22 +01:00
documentation Fluid: Add Undo to formula input fields. (#547) 2022-11-17 00:43:16 +01:00
examples CMake: fix building examples w/o test programs 2022-11-19 11:55:45 +01:00
FL Refactor and simplify "arrow drawing" in widgets 2022-11-22 19:32:54 +01:00
fluid Fluid: Add Undo to formula input fields. (#547) 2022-11-17 00:43:16 +01:00
GL Remove $Id$ tags, update URL's, and more 2020-07-06 20:28:20 +02:00
jpeg Use "symbol prefixing" in bundled libs (part 3 of 3) 2021-11-14 19:33:20 +01:00
lib Improve documentation about library build folders and more 2021-10-04 14:42:32 +02:00
libdecor libdecor: update from source git repo (commit e87dcfda) 2022-11-03 08:16:49 +01:00
misc Fix README files and remove stale config.guess and config.sub 2021-11-24 15:01:45 +01:00
nanosvg Upgrade the bundled nanosvg library to current version 2022-07-09 14:37:46 +02:00
png Silence compiler warnings [-Wunused-but-set-variable] 2022-04-03 22:30:59 +02:00
public
src Refactor and simplify "arrow drawing" in widgets 2022-11-22 19:32:54 +01:00
test Fix whitespace errors and dependencies 2022-11-16 21:10:14 +01:00
util Move src/cmap.cxx to util/cmap.cxx (utilities folder) 2022-03-27 17:05:55 +02:00
zlib Use "symbol prefixing" in bundled libs (part 3 of 3) 2021-11-14 19:33:20 +01:00
.clang-format Update .clang-format control file 2022-03-31 15:57:10 +02:00
.gitattributes Remove experimental platforms Android, Pico, SDL (PR #376) 2022-01-23 18:12:47 +01:00
.gitignore Fix build process of PDF docs on macOS and update .gitignore 2022-09-23 15:45:45 +02:00
.gitlab-ci.yml GitLab CI: fix syntax error 2022-08-17 15:29:18 +02:00
ANNOUNCEMENT
autogen.sh Fix README files and remove stale config.guess and config.sub 2021-11-24 15:01:45 +01:00
CHANGES_1.0.txt Remove $Id$ tags, update URL's, and more 2020-07-06 20:28:20 +02:00
CHANGES_1.1.txt Fix old URL's and forum/newsgroup names 2020-07-14 15:16:05 +02:00
CHANGES_1.3.txt Remove $Id$ tags, update URL's, and more 2020-07-06 20:28:20 +02:00
CHANGES.txt Reorganize content of CHANGES.txt & introduce Fl_Flex 2022-11-05 05:19:58 +01:00
CMakeLists.txt CMake: fix informative messages sent under macOS 2022-11-18 10:55:14 +01:00
config.guess Add autoconf cross-compilation support files. 2021-02-13 17:17:43 -05:00
config.sub Add autoconf cross-compilation support files. 2021-02-13 17:17:43 -05:00
configh.cmake.in Remove obsolete config variable 'HAVE_LIBPNG_PNG_H' 2022-04-04 21:10:25 +02:00
configh.in Remove obsolete config variable 'HAVE_LIBPNG_PNG_H' 2022-04-04 21:10:25 +02:00
configure.ac Wayland + configure: take care of HAVE_GLXGETPROCADDRESSARB 2022-11-05 05:01:56 +01:00
COPYING Remove $Id$ tags, update URL's, and more 2020-07-06 20:28:20 +02:00
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DartConfig.cmake Remove $Id$ tags, update URL's, and more 2020-07-06 20:28:20 +02:00
fl_config.cmake.in Make hybrid Wayland/X11 platform. 2022-08-29 12:15:32 +02:00
fl_config.in Make hybrid Wayland/X11 platform. 2022-08-29 12:15:32 +02:00
fltk_version.dat Rename file 'VERSION' to 'fltk_version.dat' (#191) 2021-02-20 13:46:34 +01:00
fltk-config.in Fix for fltk when make install used 2022-01-23 03:10:13 -08:00
fltk.list.in Refactor macOS bundle generation to avoid "quarantine" 2021-05-13 16:18:13 +02:00
fltk.spec.in CMake: refactor and reformat CMake files 2020-07-15 00:34:53 +02:00
fltk.xpm Fixed all Pixmaps to be '*const' (STR #3108). 2019-02-05 00:14:37 +01:00
forms.h
install-sh Remove $Id$ tags, update URL's, and more 2020-07-06 20:28:20 +02:00
mac_endianness.h Remove $Id$ tags, update URL's, and more 2020-07-06 20:28:20 +02:00
Makefile Wayland: fix configure-based build 2022-03-05 10:18:11 +01:00
makeinclude.in New configure setting "--enable-wayland --disable-x11" to build pure Wayland platform. 2022-09-10 07:44:23 +02:00
makesrcdist Fix README files and remove stale config.guess and config.sub 2021-11-24 15:01:45 +01:00
README.abi-version.txt Generate FL/fl_config.h rather than FL/abi-version.h 2021-12-18 22:44:08 +01:00
README.bundled-libs.txt Upgrade the bundled nanosvg library to current version 2022-07-09 14:37:46 +02:00
README.Cairo.txt Make hybrid Wayland/X11 platform. 2022-08-29 12:15:32 +02:00
README.CMake.txt Make building Fluid optional. (#539) 2022-11-13 20:16:54 +01:00
README.experimental.txt Remove experimental platforms Android, Pico, SDL (PR #376) 2022-01-23 18:12:47 +01:00
README.IDE.txt Remove experimental platforms Android, Pico, SDL (PR #376) 2022-01-23 18:12:47 +01:00
README.macOS.md update README.macOS.md (Creating new Projects) 2022-04-14 13:05:33 +02:00
README.md Fix whitespace errors (no code changes) 2022-03-31 16:00:11 +02:00
README.txt Documentation: add missing mentions of the Wayland platform. 2022-07-05 10:13:31 +02:00
README.Unix.txt Fix a typo in README.Unix.txt 2022-10-21 19:11:19 +02:00
README.Wayland.txt Wayland/X11 hybrid: use "bool fl_disable_wayland;" declaration. 2022-11-05 19:47:37 +01:00
README.Windows.txt Generate FL/fl_config.h rather than FL/abi-version.h 2021-12-18 22:44:08 +01:00

README.md

README - Fast Light Tool Kit (FLTK) Version 1.4.0

WHAT IS FLTK?

The Fast Light Tool Kit ("FLTK", pronounced "fulltick") is a
cross-platform C++ GUI toolkit for UNIX®/Linux® (X11 or
Wayland), Microsoft® Windows®, and macOS®.
FLTK provides modern GUI functionality without the bloat and
supports 3D graphics via OpenGL® and its built-in GLUT
emulation. It was originally developed by Mr. Bill Spitzak
and is currently maintained by a small group of developers
across the world with a central repository on GitHub.

For more information see README.txt:
https://github.com/fltk/fltk/blob/master/README.txt

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