The shift key doesn't make sense to be one of the keys that will trigger
KWin to allow XWayland apps to process all keys when it's pressed,
because there aren't generally global shortcuts that consist of Shift
plus an alphanumeric character key. That's because this key combination
is used to type capital letters.
So we can safely exclude the shift key to improve security against key logging and not break any global
shortcut-using XWayland apps for people using this feature.
The shift key on it's own is still forwarded as that's a non-character key.
We need to be careful about the target rect when painting a hidpi image
onto a lodpi image.
This is the case when the startup feedback generates bouncing frames.
The icon pixmap may be hidpi, while the result image has device pixel
ratio 1.
Currently hidpi region screencasting is broken because output textures
are inappropriately scaled.
The orthographic projection is set up with logical pixels, but the
remaining rendering code uses "1 / m_scale" scale factor, which is wrong.
In order to fix hidpi and also simplify rendering logic, this change
makes rendering code use logical coordinate system. It's okay to do in
screencasting because we don't need to worry about snapping to the pixel
grid.
BUG: 476858
BUG: 476859
If there were no open windows KWin would wait until the timer ran
out and return false signifying that some windows didnt close.
BUG:477573
FIXED-IN:6.0
This change enables the use of HW cursors on Nvidia GPUs. The problem
with the current approach is that the cursor plane requires a linear
buffer to be attached on the Nvidia hardware. However, Nvidia GPUs
cannot render to a linear texture, this is why DRM_FORMAT_MOD_LINEAR is
marked as "external only" when the supported modifiers are queried by
eglQueryDmaBufModifiersEXT(). Since the EGL render backend in KWin
cannot find a common DRM format modifier between what the cursor plane
needs and what the GPU can render to, it falls back to the SW cursor
implementation.
With this change, when the EGL renderer detects that a plane only
supports linear buffers but rendering directly to a linear buffer is not
possible, it copies the rendered content into a linear dumb buffer, and
attaches that buffer to the plane instead of using the rendered buffer
directly.
This overhauls the kill prompt UI to make it more modern and more
easily to grasp.
* Reduce the amount of text and redundancy.
Give the window a title and drop the "app is not responding" heading.
Try to remove the application name from the displayed window title.
Also use the bold emphasis used in other places like deleting files.
* Use the application icon if available with a warning overlay.
This makes it easier to grasp which application it's talking about.
* Move technical information (like PID and hostname) into an
expandable "Details" section.
KGuiAddons has been implicitly pulled in by KConfigWidgets already.
Instead of killing the window without asking, show the kill prompt
like it's done for X11 windows.
The window in question is exported through XDG foreign so the kill
helper can parent itself to it, and an activation token is also provided.
Also, the more contemporary desktop file name is now used for
identification rather than window class.
A no-display desktop file is installed for the kill helper so that it
can get a proper window icon and suppress startup notification.
Without a client asking for it. This way we can send a surface
to another helper application, such as the window killer.
An ExportedSurface wrapper class is introduced which represents
an exported surface in a windowing-system independent way.
This makes it consistent with the timeout used on X11.
The current ping timeout was also generally quite short, causing apps
to desaturate for brief moments when they were busy e.g. starting up
or loading large files.
Closed windows are present in the stack. If user has selected
"Stacking order" sort order in task switcher KCM, we need to guard
against closed windows in the stack.
Otherwise dangling pointers can end up in TabBox::ClientModel. Tabbox is
written with hard model resets in mind. In order to fix it, the client
model has to be rewritten.
BUG: 477166
Ideally the decoration of a closed window should not change. However,
it seems like it can happen when resuming the session.
When switching to another VT, the touchpad input device is removed, but
the touch input device is still kept on my machine. This results in
the tablet mode changing temporarily and triggering recalculation of new
borders in breeze decoration. It's a no-no thing to do if the window is
closed. We need to guard against this case. But in long term, we need to
reroute all decoration state updates through kwin so it can block state
updates when the window is closed. It's also needed for double buffered
state.
How to improve handling of tablet mode detection when switching between
VTs needs a separate investigation.
CCBUG: 477166
sRGB content is made to be encoded with the sRGB piece-wise transfer function,
and to be decoded by displays with the gamma 2.2 transfer function.
When KWin has a display in sRGB mode, this doesn't make a difference - it
decodes with sRGB and encodes with sRGB, so there's effectively no transformation.
When the display is in PQ mode though, KWin uses the sRGB inverse EOTF for
decoding sRGB content, but not the sRGB EOTF for encoding it again.
To fix this, this commit changes KWin to use the gamma 2.2 EOTF and inverse
EOTF for untagged content. That's not technically correct for sRGB screenshots,
where we'd have to use the piecewise sRGB EOTF, but that's a problem that
can be solved in the future.
Bouce keys suppresses additional key presses during a given interval
This is used by people with motor impairments or bad keyboards
It works by remembering the last input timestamp for a key
If an event's timestamp is too close to the last timestamp for that key the event is rejected
BUG: 474752
