Corresponds to STR #3320
1) HiDPI support consists in detecting the adequate scaling factor for the screen on which
FLTK maps a window, and scaling all FLTK units by this factor. FLTK tries to detect the correct
value of this factor at startup (see more details below). Environment variable
FLTK_SCALING_FACTOR can also be used to set this value.
2) Rescaling support consists in changing the scaling factor of all FLTK windows
in reply to ctrl/+/-/0/ keystrokes.
More details for the various platforms :
- X11: Support is very advanced. Some details need still to be improved.
Automatic detection of the correct starting value of the scaling factor works well
with the gnome desktop. The present code contains no support for this on
other desktops. FLTK_SCALING_FACTOR provides a workaround.
-WIN32: Support is incomplete at this point, although many test
applications have partial or complete HiDPI and scaling support.
The current value of the system's scaling factor is correctly detected
at application startup. Apps respond to changes of this value in real time.
Support needs to define the FLTK_HIDPI_SUPPORT preprocessor variable
at compile time. This way, standard builds produce a code with the
default WIN32 HiDPI support, that is, where all graphics goes to an internal
buffer that gets enlarged by the system and then mapped to the HiDPI
display. To experiment with (or develop) the new HiDPI support requires
a modified build procedure in which FLTK_HIDPI_SUPPORT is defined
at compile time. When the support will be complete, the requirement for the
definition of this preprocessor variable will be removed. The present commit
contains support for a single scaling factor. Eventually, per-screen scaling
factors should be implemented, as done for X11.
- MacOS: this commit does not give new HiDPI for this platform.
Eventually, window rescaling in reply to command/+/-/0/ is desirable.
Per-screen scaling factor makes no sense on this platform because
the OS itself takes care of the difference between the resolutions of
traditional and retina displays.
git-svn-id: file:///fltk/svn/fltk/branches/branch-1.4@12239 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
As discussed on 2017-05-15 in fltk.general, thread "Fl_clock".
git-svn-id: file:///fltk/svn/fltk/branches/branch-1.4@12237 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
Solves STR# 3381.
Also: standardized doxygen comment style in both files;
> /** */ doxygen commenting
> 2 space indent
Removed some confusing non-doxygen comments, and rewrote some confusing ones.
Removed old license info Matt had imported from my original 2002 widget..
there was no reason for it to be in there; the Fl_Table code inside FLTK
is licensed under the FLTK GPL license, no need for the extra noise in the docs.
git-svn-id: file:///fltk/svn/fltk/branches/branch-1.4@12228 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
The X11 platform uses this argument to restore the correct clipping state after
drawing to an Fl_Image_Surface object.
git-svn-id: file:///fltk/svn/fltk/branches/branch-1.4@12226 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
This helps ensure they are not part of the public API.
git-svn-id: file:///fltk/svn/fltk/branches/branch-1.4@12199 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
As proposed in STR #2750 and #2752: only status quo, i.e.:
- no new method Fl_Input_Choice::maximum_size(int) (STR #2750 and #2752)
- no handling of FL_Down key to open menu (STR #2752)
git-svn-id: file:///fltk/svn/fltk/branches/branch-1.4@12192 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
Previously Up/Down keys worked only if one of the buttons was pressed
before so that it had the focus.
test/valuators.fl: The second Fl_Spinner widget (FL_FLOAT_INPUT) now has
wrap mode disabled whereas the first one (FL_INT_INPUT) uses wrap mode
(default, compatible with FLTK 1.3.x and older).
git-svn-id: file:///fltk/svn/fltk/branches/branch-1.4@12191 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
New method Fl_Tabs::tab_align() supports icons in tabs (STR #3076).
This commit also enables drawing labels of Fl_Window children (STR #3075).
Setting tab_align(FL_IMAGE_NEXT_TO_TEXT) draws images (icons) in the tab
labels if the child has an image(). Currently this draws the image() even
if the child is deactived (so it should presumably draw the deimage()).
Todo: Label measurement and Fl_Windows as children still need fixups.
git-svn-id: file:///fltk/svn/fltk/branches/branch-1.4@12185 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
Make clear that some alignment bit combinations are "illegal" and yield
undefined behavior that can be changed without notice.
Fix label alignment in some border cases where illegal bit combinations like
FL_ALIGN_LEFT and FL_ALIGN_RIGHT or FL_ALIGN_TOP and FL_ALIGN_BOTTOM are
both set, respectively.
Todo: There appears to be inconsistent handling WRT these "illegal" cases,
for instance with inside labels as opposed to outside labels, such that
the behavior seems to be unpredictable. See test/label.cxx.
git-svn-id: file:///fltk/svn/fltk/branches/branch-1.4@12181 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
Subject: Fl_Glut_Window::Fl_Glut_Window(int w, int h, const char *title = 0)... err huh well no, but it should be
git-svn-id: file:///fltk/svn/fltk/branches/branch-1.4@12151 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
This ensures API compatibility with FLTK 1.3 where Fl_Surface_Device->set_current()
is used to change the current drawing surface.
git-svn-id: file:///fltk/svn/fltk/branches/branch-1.4@12125 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
FLTK_ABI_VERSION has been renamed to FL_ABI_VERSION in FLTK 1.4.0.
git-svn-id: file:///fltk/svn/fltk/branches/branch-1.4@12121 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
Missing FL_EXPORT statements (attributes) affected only the configure/make
build because some compiler and linker options (visibility etc) are not
yet implemented in the CMake build.
git-svn-id: file:///fltk/svn/fltk/branches/branch-1.4@12113 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
Documentation has been fixed and clarified, and ld() handling is now
consistent in Fl_(RGB_)Image, their subclasses and fl_draw_image()
and similar functions.
git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3-porting@12029 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
Minor code changes (e.g. renaming of variables) included, but no functional
changes.
git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3-porting@12003 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
The warning is issued to stderr only once (previously: every time rotated
text was used).
git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3-porting@11978 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
Missing statements found while merging fixes from branch-1.3.
Todo: check if they have been 'lost' in the porting process
or removed deliberately in branch-1.3-porting.
git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3-porting@11976 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
