The cursor texture, scale and position is captured separately and
overlaid on top of the preview, and on top of the final screenshot
image. This allows toggling it on and off post-factum.
Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1954>
As mentioned in the last commit, we'll split up taking screenshots into
creating a GPU texture first, and later saving that to disk as a PNG.
For individual windows it's already easy to get a ClutterContent with
the texture using meta_window_actor_paint_to_content (), for the stage
it's not that easy and involves a few extra steps including X11 specific
ones.
So introduce a new ShellScreenshot API which does all that and provides
the caller with a ClutterContent of the stage:
shell_screenshot_screenshot_stage_to_content ()
Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1954>
With the new screenshot UI we're introducing, we'll be capturing all
screenshots to textures on the GPU at first, and then create a PNG
stream from those textures at a later point. This will allow us to
present screenshots immediately to the user so they can inspect them and
select the right area before actually saving them to disk.
As a first step to make this work, introduce a new ShellScreenshot API
that writes an existing CoglTexture to a PNG output stream:
shell_screenshot_composite_to_stream ()
Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1954>
Add a "screenshot-taken" signal from the screenshot service's internal C
implementation, and use that to trigger the camera flash visual effect
and the click sound, allowing them to run in parallel with the PNG
compression instead of waiting until the file is complete to start.
This significantly improves perceived latency on high res setups such as
4K, 5K, or dual 4K screens.
Fixes https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/512
Co-authored-by: Brion Vibber <bvibber@wikimedia.org>
Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1658>
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
