Turns out that shell_screenshot_screenshot_area was affected
by the same issue that shell_screenshot_screenshot used to have.
Adapting code changes from commit id c09be8b0:
"screenshot: Grab screenshot during paint on X11" fixes it.
Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1549>
We might not be able to directly paint the stage to an offscreen, if
there currently is a fullscreen unredirected window. To make it possible
to take a screenshot in this situation, disable unredirecting, queue a
frame, and take a screenshot after having painted that frame, before we
go back being unredirected.
Don't do this on Wayland because it's a waste.
Closes: https://gitlab.gnome.org/GNOME/mutter/-/issues/1453
Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1534>
This eliminates the need to wait for redraws, drawing cursors, and
stiching together cairo images in case the screenshot covers multiple
monitors.
All of that is now handled by mutter itself.
https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1383
Commit da537cda43 moved the Shell.Screenshot API to GIO's async pattern,
but we never set the GError passed to the *_finish() functions and only
indicate failure by returning FALSE.
The expected behavior is to throw an error in that situation, so make sure
we do that.
https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1123
While still leaving them unused, pass around ClutterPaintContext and
ClutterPickContext when painting and picking.
The reason for splitting this change up in two is to make it possible to
bisect easier in between the API change and the change to using the
framebuffer passed around with the temporary contexts.
https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/827
Instead of going via the MetaShapedTexture to get the cairo surface, get
it from the window actor. The window actor can then handle this in a way
that makes it include potential subsurfaces.
https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/692
The same code for reading the current magnifier state is repeated in both
shell-recorder, shell-screenshot and magnifier itself.
So to move this inside a property of st-settings so that we can refer to it
all over the places removing duplications.
https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/473
If the locale doesn't honor strftime()'s %c argument, we would end up
feeding NULLs into GdkPixbuf tagging. Fallback to a sensible (although
not nicely localized) datetime string.
Closes: https://gitlab.gnome.org/GNOME/gnome-shell/issues/1017
When we grab a screenshot of a framebuffer scaled shell, we shoudl apply the
device scale to the image surface, while the monitor scaling should be applied
to the cursor surface, so that it's painted at proper coordinates and in proper
size in the generated image.
This is not needed for XWayland clients as they are not scaled anyways, while
for wayland clients that are painted in multiple monitors, this might cause
a lower quality cursor in the lower dpi monitor, because the cursor sprite is
generated for the monitor scale, and not for the surface scale.
https://bugzilla.gnome.org/show_bug.cgi?id=765011https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/5
Under wayland, if the cursor should be included when doing a fullscreen
screenshot, we can rely on mutter "paint" signal to have it composited for free.
Otherwise if it's not requested, we can use the "actors-painted" signal to get a
stage texture before the mouse overlay has been added.
Instead, under X11 or when only a window screenshot is requested, we still
need to draw it manually.
https://bugzilla.gnome.org/show_bug.cgi?id=765011https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/5
Get from clutter the capture sizes and scale and don't mind
about doing any rounding here, as it might be different
from the one done at clutter level (causing mismatch and
not-working videos). Delegate this to clutter, and forget
about the internal details.
These values are then used to composte the image and set the video caps.
https://bugzilla.gnome.org/show_bug.cgi?id=7650111
Graphical applications like GIMP or GIMP allow picking colors from
any location on-screen. In order to keep supporting this feature
on wayland and in sandboxed apps, we will expose an appropriate
method in the Screenshot interface, so first add a corresponding
method to ShellScreenshot.
https://gitlab.gnome.org/GNOME/gnome-shell/issues/286
A custom callback type is more convenient, but only as long as no
other callback type is required. We are about to add functionality
that does not return the filename to a screenshot saved on disk, so
prepare for that by moving to GIO's generic async callback pattern.
https://gitlab.gnome.org/GNOME/gnome-shell/issues/286
Remove any usage of MetaScreen, as it has been removed from libmutter
in the API version 3. The corresponding functionality has been moved
into three different places: MetaDisplay, MetaX11Display (for X11
specific functionality) and MetaWorkspaceManager.
https://bugzilla.gnome.org/show_bug.cgi?id=759538
When clutter gives us multiple captures (multiple cairo_surface_t's),
composite them into one large image and use that as final screenshot
result. This makes screenshooting work when mutter uses multiple views.
https://bugzilla.gnome.org/show_bug.cgi?id=770128
There is no longer any guarantee that there'll be one single
framebuffer to read pixels from. In order to still read pixels from the
stage, use the new clutter_stage_capture API.
https://bugzilla.gnome.org/show_bug.cgi?id=768979
Cut down on boilerplate by using the (no longer that) new helper
macros. We don't care about breaking ABI in private libraries, so
use G_DECLARE_FINAL_TYPE even where the class struct used to be
exposed in the header, except for types we inherit from ourselves
(obviously) or where the class exposes any vfuncs (where changes
could affect inheritance in extensions).
We currently allow infinite number of screenshot requests to be active at
the same time, which can "dos" the system and cause OOM.
So fail subsequent requests for the same sender when a screenshot operation
is already running.
https://bugzilla.gnome.org/show_bug.cgi?id=737456
clutter_device_manager_get_core_device calls XIGetClientPointer, which
requires a round-trip to the server. Since we do this on StWidget
creation, this means a full round-trip for every created StWidget.
Replace this with get_device with the ID of the VCP/VCK, since mutter
doesn't support MPX, and we know this is what the device is.
As with the screen recorder, the magnifier already adds its own
copy of the system cursor, so we should not add it again. Just
as in the screen recorder case, we don't address the case where
the cursor should not be included in the screenshot, but the
magnifier adds it anyway.
https://bugzilla.gnome.org/show_bug.cgi?id=700488
GdkPixbuf is stored in memory as individual bytes, in strict red-green-blue-alpha
order, while cairo image surfaces are stored as 32bits units whose
order depends on the endianess.
It is probably possible to do something better, taking advantage
of cogl and the GL using the actual component order, but for now
it is easier to use the GDK utility to convert the cairo surface.
https://bugzilla.gnome.org/show_bug.cgi?id=693931
Use GdkPixbuf rather then cairo_surface_write_to_png_stream when saving
screenshots because this allows us to embedded metadata into the file which
is used by the background control panel to filter out screenshots.
https://bugzilla.gnome.org/show_bug.cgi?id=693737
We have to mark the cairo_surface dirty after modifying the data behind
cairo's back.
Also use CAIRO_FORMAT_ARGB32 rather then CAIRO_FORMAT_RGB24 for the
surface to be consistent with the rest of the code.
https://bugzilla.gnome.org/show_bug.cgi?id=691715
Since we also support passing a basename now, clients might be
interested in knowing the path used to save the file.
Add an out argument to the interface for that.
https://bugzilla.gnome.org/show_bug.cgi?id=688004
If a non-absolute path is passed to the screenshot methods, treat it as
a basename for the output image, and automatically try to save it in
$XDG_PICTURES_DIR, falling back to $HOME if it doesn't exist.
https://bugzilla.gnome.org/show_bug.cgi?id=688004
The screen grabber was a workaround for an extremely slow path in Mesa
when reading back pixel data from the frame buffer. It was using pixel
buffer objects by directly calling into GL to hit a fast blit path in
Intel's driver. This should no longer be necessary with the latest
Mesa because the normal read pixels path now has a fast path to just
memcpy the data. Using PBOs in that case just adds an extra
indirection because the data is read into an intermediate buffer and
then copied back out again.
We want to be able to remove the dependency on linking against libGL
directly from Gnome Shell because that will not work if Cogl is
actually using GLES. Also libGL includes GLX which means gnome-shell
ends up with a hard dependency on Xlib which hinders the goal of
getting Gnome Shell to be a Wayland compositor.
https://bugs.freedesktop.org/show_bug.cgi?id=46631https://bugzilla.gnome.org/show_bug.cgi?id=685915
We've been dangling on the edge of unsafety, unnoticed, for a little while
about the reference count safety of ShellScreenshot. GJS owns the entire
reference count, so as soon as it goes out of scope it could die, causing
GJS to try and fetch the corresponding wrapper object for a stale pointer.
We haven't seen any crashes because of luck -- SpiderMonkey tries to group
together deallocations to limit GC pauses, and there isn't really a lot
of GC pressure in the duration that a screenshot happens, so we tend to
be mostly stable. But in the case that you create a lot of objects while
a screenshot is going on, by hammering the "Print Screen" button, for
example, you can destroy the GObject before the callback finishes.
https://bugzilla.gnome.org/show_bug.cgi?id=672775
