- remove separate libfltk_cairo to avoid cyclic dependencies, but
- keep a dummy libfltk_cairo in 1.4.0 for backwards compatibility
- move cairo/Fl_Cairo.cxx to src/Fl_Cairo.cxx
- add preliminary Cairo support for Visual Studio (MSVC)
Static linking is not affected by this change, but users building
with hand-made Makefiles will have to remove libfltk_cairo starting
with FLTK 1.4.0. The dummy library can be linked for backwards
compatibility but it will be removed later (in 1.4.x or 1.5.0).
The shared FLTK library libfltk.{so|dylib|dll|..} depends on libcairo
if and only if FLTK is built with one of the Cairo options. This has
always been the case for OPTION_CAIROEXT but is now also true if only
OPTION_CAIRO is selected, i.e. FLTK programs linked with a Cairo
enabled shared FLTK library will also be linked with libcairo. The same
is true for configure options --enable-cairo and --enable-cairoext,
respectively.
Preliminary Cairo support for MSVC now detects a Cairo installation
using the CMake variable FLTK_CAIRO_DIR which must be set by the user.
Note that this feature is temporary and may be changed in the future
for a better and more comfortable version.
Since FLTK 1.4.0 inclusion of FL/Fl.H is no longer a requirement
unless class Fl is used (e.g. Fl::run()) or if it is used to include
other headers like FL/Enumerations.H
Add Doxygen-formatted description of the Wayland backend
Add bundled-libs.dox
Delete README.bundled-libs.txt
Move "Development" page to "Development of FLTK" chapter
Some Wayland specific files are generated by the build process with
configure + make in the source tree.
These files are now ignored by the Doxygen documentation process.
This file is now compatible up to Doxygen 1.9.5, i.e. there are
no warnings about obsolete parameters when generating the docs.
Current git 'master' of Doxygen (1.9.6: not yet released) issues
some warnings but these will hopefully be fixed in Doxygen.
Oldest tested Doxygen: 1.8.17 - older versions may emit warnings.
Ignore error if docs are not generated using a git working tree, for
instance from a downloaded tarball or zip file. This is only a
temporary solution for issue #499 (see "FIXME" comment).
Execute doxygen only if it is available. i.e. found by CMake.
Under non-macOS platforms, the key is to call glUseProgram(0); after having used OpenGL 3
which allows to then use OpenGL 1 and draw FLTK widgets over the OpenGL3 scene.
Under macOS, this is impossible because macOS GL3 contexts are not compatible
with GL1. The solution implemented here is to create an additional Fl_Gl_Window
placed above and sized as the GL3-based window, to give it a non opaque,
GL1-based context, and to put the FLTK widgets in that additional window.
Note: the syntax of command/switch `sed -i` is slightly different
on macOS vs. Linux and should not be used.
Move .gitignore parts referring to /documentation/ to their own file
'documentation/.gitignore' and add new generated file(s).