This is for adding a EGL-based renderer which is done via the ANGLE
project, which translate EGL calls to Direct3D 9/11. This is done as a
possible solution to issue #105, especially for cases where the needed
full GL extensions to map OpenGL to Direc3D is unavailable or
unreliable, or when the OpenGL implementation from the graphics drivers
are problematic.
To enable this, do the following:
-Build ANGLE and ensure the ANGLE libEGL.dll and libGLESv2.dll are
available. A sufficiently-recent ANGLE is needed for things to
work correctly--note that the copy of ANGLE that is included in
qtbase-5.10.1 is sufficient. ANGLE is licensed under a BSD 3-clause
license. Note also that Visual Studio 2013 or later is required to
build ANGLE from QT-5.10.1, but the 2013-built ANGLE DLLs can work
without without problems for GTK+ that is built with Visual Studio
2008 or later.
-Build libepoxy on Windows with EGL support enabled.
-Define GDK_WIN32_ENABLE_EGL when building gdk-win32.lib when building
with Visual Studio, or pass in --enable-win32-gles during configure
when building with MinGW/mingw-w64.
-Prior to running GTK+ programs, the GDK_GL envvar needs to contain
gles.
Known issues:
-Only OpenGL ES 3 is supported, ANGLE's ES 2 does not support the needed
extensions, notably GL_OES_vertex_array_object, but its ES 3 support is
sufficient.
-There is no autodetection or fallback mechanism to enable using
EGL/Angle automatically yet. There is no plans to do this in this
commit.
Thanks to LRN for pointing out that we should #include
"win32/gdkwin32.h" instead of #include "gdkwin32.h" for gdkgl.c. LRN
also did the autotools portion of this patch.
Further notes about the autotools --enable-win32-gles option, fom LRN:
This adds --enable-win32-gles option, which enables the
code for GLES renderer. This commit also adds tests for WGL and
EGL in epoxy. The absence of WGL is highly unlikely (it's enabled
by default), but checking for EGL when GLES is enabled is necessary,
as EGL is disabled in Windows builds of epoxy by default.
...in place of math.h, as we are using round(), which is possibly not
provided by the compiler since we don't require a C99 compiler in
GTK+-3.x and gtk/fallback-c89.c does include math.h anyways.
On Windows HarfBuzz and PangoFT2 are optional, so we need to ensure that
we only build the bits that require HarfBuzz and PangoFT2 when needed.
We may need to see later whether we can get the needed functionality in
gtkfontchooserwidget.c with the Windows APIs without the need of
HarfBuzz nor PangoFT2 (and starting programs on Windows using FontConfig
is very slow).
Reinstate code that was accidentally deleted during the port to
GtkProgressTracker in commit d57ebe2de7.
Without that code, pulsing the progressbar will stop doing anything
after 3 iterations.
If the parent get_preedit_string implementation returns a nonnull
zero-length string, then we ignore it, which is almost fine. We have to
free it, though.
Fixes#1174
This adds a preprocess step to the .ui files to strip them of blank
characters. It also removes the compressed='true' from the .ui files since
that involves creating lots of decompressor objects when creating widgets.
Doing so has runtime overhead and slows down the creation of initial
application windows.
The .ui files are left compressed for the Inspector, since that is not in
the core performance path of application startup.
border-spacing was not backported (yet?). If it won't be, then a
suitable replacement is needed. Until then, avoid the runtime error that
can result from using a nonexistent property in our theme.
https://gitlab.gnome.org/GNOME/gtk/issues/1166
Selected rows in tree views in HighContrast have a background colour the
same or nearly as the normal text colour, so we cannot let entries in
such rows have transparent backgrounds, or the text inside the entry
becomes nearly or totally impossible to see.
Dodge this by giving entry.flat inside treeview and with :focus the
$base_color, which is different from the text & so lets that be seen.
https://gitlab.gnome.org/GNOME/gtk/merge_requests/125
The else case was wrongly resetting the accessible description on the
primary icon, which might not exist and can therefore cause a crash.
https://gitlab.gnome.org/GNOME/gtk/issues/1160
This functionality is similar to Linux's memfd. It creates anonymous shared memory without touching the filesystem, which allows it to work in Capsicum capability mode (sandbox).
Remove g_auto*() usage from these sources and use the traditional
g_free(), as g_auto*() are GCCisms (or CLangisms).
Also, don't include unistd.h unconditionally and stop including
langinfo.h and dirent.h, since they seem to be unused.
Partially cherry-picked from a4c0395343https://bugzilla.gnome.org/show_bug.cgi?id=773299
In 01455399e8 ("gdk: do not deactivate surface on keyboard grabs"), we
made gdk avoid deactivating surfaces when another application takes a
keyboard grab, by using has_focus_window instead of has_focus. That however
broke activating surfaces when the gdk application acquired a grab itself,
in which case has_focus_window is false but has_focus is true.
We thus actually need to use both: surfaces should be activated either
because we have normal keyboard focus, or because we grabbed the keyboard.
This also renames HAS_FOCUS to APPEARS_FOCUSED to better reflect its
role.
Fixes#85
(cherry picked from commit 3287ac96e02ff236d74db10164c5b0c1e7b2b0bf)
There is no reason why we shouldn't pass this flag every time
Z-order changes. We have separate routines that are used to
maintain relative Z-order, so it should be completely OK to
pass SWP_NOOWNERZORDER to let the OS know that it shouldn't try
to maintain relative Z-order of the windows when raising them.
Pass SWP_NOOWNERZORDER when rising TEMP surfaces to the top. This ensures that
they don't drag anything else to the top with them. The use-case for this is
a tooltip (which must be on top) appearing for a non-foreground surface,
causing said surface to rise above other surfaces, some of which may
be foreground at the moment.
https://bugzilla.gnome.org/show_bug.cgi?id=784766
Fixes issue #852
For very small page sizes of < 1.0, the effect of pow() is the
opposite of what's intended and the scroll steps become unusably
large, make sure we never get a scroll_unit larger than page_size /
2.0, which used to be the default before the pow() magic was
introduced.
Application is not expecting that.
Bug found due gdk_seat_grab() failure on Lock Screen. When user
Unlock the screen, the application is visible but does not receive
enter-event any more on X11/GNOME.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1485968
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1571422
Signed-off-by: Victor Toso <victortoso@redhat.com>
Signed-off-by: Carlos Garnacho <mrgarnacho@gmail.com>
