The functions gdk_pixbuf_get_from_window() and
gdk_cairo_set_source_window() are unreliable and depend on the windowing
system (they work great on X11 and Win32, less so on Quartz and Wayland).
With the switch to new drawing API and OpenGL, we can definitely no
longer support a generic way to snapshot windows.
People should either write windowsystem-specific code or draw their
widgets directly - like with gtk_widget_draw() - if they need to get a
rendering.
gdk_pixbuf_get_from_window() paints the given window onto a new cairo
surface. Create that new surface with the same device scale as the
window so that the result is not scaled down on hidpi screens.
This is similar to 657a43e (which was reverted), but doesn't modify the
behavior of gdk_pixbuf_get_from_surface().
https://bugzilla.gnome.org/show_bug.cgi?id=757147
gdk_pixbuf_get_from_window() paints the given window onto a new cairo
surface. Create that new surface with the same device scale as the
window so that the result is not scaled down on hidpi screens.
https://bugzilla.gnome.org/show_bug.cgi?id=757147
We do not know what happened to this surface outside of GDK.
Especially for foreign windows, they will have been modified
by external applications.
So be on the safe side and tell Cairo to clear all its caches.
https://bugzilla.gnome.org/show_bug.cgi?id=754952
... instead of _gdk_drawable_ref_cairo_surface() where appropriate.
Also, don't implement the drawable->create_cairo_surface vfunc anymore.
This is in preparation for the split of GdkWindow from GdkDrawable.
The ownership of the return value for gdk_pixbuf_get_from_window() and
gdk_pixbuf_get_from_surface() was determined by the first argument.
Because that is an ugly design and the functions are new to GTK3, we
decided to adapt them.
And that adaptation was quite easy since almost no one passses anything
but NULL as the first argument.
This commit was created using a script that searched for all docstrings
containing a parameter and the string 'or %NULL'.
Gdk backends and demos excluded as they are not part of a public API
https://bugzilla.gnome.org/show_bug.cgi?id=610474
2005-03-15 Matthias Clasen <mclasen@redhat.com>
Make PLT-reduction work with gcc4, and don't include
everything in gdkalias.h:
* gdk/gdk.symbols: Group symbols by header and source file.
* gdk/makegdkalias.pl: Protect definitions by the same
preprocessor symbols used to guard the headers. Move
the alias declarations to a separate file which is
produced when calling makegdkalias.pl -def
* gdk/Makefile.am (gdkaliasdef.c): Add a rule to generate this
file.
* gdk/*.c, gdk/x11/*.c: Include gdkalias.h after the other
headers, include gdkaliasdef.c at the bottom.
Mon Aug 9 15:41:17 2004 Matthias Clasen <maclas@gmx.de>
Add hidden aliases for exported symbols which are
used internally in order to get rid of many PLT
entries. (#145519, Arjan van de Ven)
* gdk/Makefile.am: Add rules to generate gdk.def and
gdkalias.h from gdk.symbols, and make make check check
the abi with abicheck.sh.
* gdk/gdk.symbols: New file. Definition of the GDK ABI.
The file can be processed by cpp to filter out certain
subsets of symbols.
* gdk/abicheck.sh: New file. Script to check the actually
symbols exported from libgdk-x11.2.0.so against the symbols
found in gdk.symbols.
* gdk/makegdkalias.pl: New file. Perl script to generate the
header containing the alias definitions for internally used
exported symbols from a list of symbols.
* gdk/*.c, gdk/x11/*.c: Include gdkalias.h
Tue Nov 18 00:12:55 2003 Matthias Clasen <maclas@gmx.de>
Fix for #119555, Peter Zelesny:
* gdk/gdkdrawable.h: Declare gdk_drawable_copy_to_image.
* gdk/gdkdraw.c (gdk_drawable_copy_to_image): Make public
by removing the _ prefix.
* gdk/gdkdraw.c, gdk/gdkpixbuf-drawable.c, gdk/gdkpixmap.c,
gdk/gdkwindow.c: Adjust all callers.
Tue Jun 3 17:39:16 2003 Owen Taylor <otaylor@redhat.com>
#71597, reported by Morten Welinder
* gdk/gdkpixbuf-drawable.c (rgb888amsb): Fix and simplify
(Patch from Christian Petig)
* gdk/gdkpixbuf-drawable.c (rgb{555,565}{a,}{msb,lsb}):
Major rewrite of 555 and 565 conversion routines:
- Move all the bit shifting into a small block of macros,
eliminating much duplication of complicated arithmetic.
- Get rid of 2-pixels at a time code, which was buggy,
hard to maintain, caused unaligned accesses, and
probably didn't actually perform any better.
- Simplify cases where different data types were
used for the little and big endian cases, use
GUINT16_SWAP_LE_BE() where appropriate.
Fri Jul 26 16:34:34 2002 Shivram U <shivaram.upadhyayula@wipro.com>
* gdk/gdkpixbuf-drawable.c (gdk_pixbuf_get_from_drawable),
(gdk_pixbuf_get_from_image), (rgbconvert), (convert_real_slow):
Check if depth of the source is not equal to the depth of the colormap
passed. (#75597)
Thu Apr 25 16:51:40 2002 Owen Taylor <otaylor@redhat.com>
Start of integration of Erwann Chenede's multihead work
from the gtk-multihead branch.
* gdk/gdkdisplay.[ch] gdk/gdkscreen.[ch]
gdk/x11/gdkdisplay-x11.[ch] gdk/x11/gdkscreen-x11.[ch]
New classes representing a set of screens with attached
input devices and a single contiguous area, respectively.
* gdk/gdk.[ch] gdk/gdkinternals.h gdk/x11/gdkmain-x11.c:
gdk/x11/gdkprivate-x11.h: Make the initialization interface
simple _gdk_windowing_init() and do the rest in
gdk_open_display() calls.
* gdk/gdk.[ch]: Add gdk_parse_args() which can be used
to do the display-independent part of initialization
instead of gdk_init_[check].
* gdk/gdkcursor.h gdk/gdkfont.h gdk/gdkkeys.h gdk/gdkpixmap.h
gdk/gdkproperty.h gdk/gdkselection.h gdk/gdkwindow.h:
Add multihead variants (_for_display(), for_screen()) of functions
getting information specific to a particular screen screen or
display.
* gdk/gdkscreen.[ch]: Add gdk_screen__* variants of functions
like gdk_rgb_get_colormap() that used to get/list global
objects.
* gdk/x11/gdkx.h: Add functions for converting GdkScreen
and GdkDisplay into the X equivalents.
* gdk/x11/gdkwindow-x11.c: Removed gdk_window_xid_at_coords()
not in the headers and unused.
* configure.in gdk/x11/{gxid.c,gxid_lib.[ch],gdkinput-gxi.c}:
Remove gxid support ... has not been tested for a long time...
"xfree" support is more portable to non XFree86.
* gdk/**.h: Add a GDK_MULTIHEAD_SAFE define that can be
used to turn off functions that are inherently non-multihead
safe.
* gdk/**.c: add GDK_NOTE(multihead, ...) calls when functions
are used in non-multihead-safe ways.
* gdk/*.c gdk/x11/*.c: Changes to make the internals of GDK
multihead safe.
2002-04-13 Havoc Pennington <hp@pobox.com>
* gdk/gdkpixbuf-drawable.c (gdk_pixbuf_get_from_drawable): create
the target pixbuf AFTER filling in width/height, so that
passing in -1 for width/height will work.
Fri Feb 22 18:36:45 2002 Owen Taylor <otaylor@redhat.com>
Fixes for AIX compilation from Miroslaw Dobrzanski-Neumann,
#72182.
* demos/gtk-demo/main.c gtk/gtktreeview.c gtk/gtktoolbar.c
gtk/gtkpaned.c gtk/gtkobject.c gtk/gtkcontainer.c
gtk/gtkcolorsel.c gtk/gtkcellrender.c gdk/x11/xsettings-client.h:
Squash trailing commas on enumerations.
* gdk/gdktypes.h: Drop GDK_RELEASE_MASK to 1 << 30 instead
of 1 << 31 to work around AIX compiler problem. (C standard
seems to imply that compiler is required to use an unsigned
type for the enum value in this case.)
* gdk/gdkpixbuf-drawable.c: Fix lvalue casts.
* gtk/gtkwindow.h: Fix use of enum types for bitfields ...
compilers may choose to use a signed type for bitfields.
