With 16k column support in Calc enabled by default in
commit 4c5f8ccf0a
Date: Tue Mar 8 12:44:49 2022 +0100
change default Calc number of columns to 16384 (tdf#50916)
, the number of Calc cells in a spreadsheet is larger than
SAL_MAX_INT32, meaning that a 32-bit a11y child index is no more
enough and using it resulted in integer overflows in
methods handling corresponding Calc cells in the a11y layer.
This e.g. had the effect of the Orca and NVDA screen readers
not announcing focused or selected cells properly when their
a11y child index was out of the 32-bit integer range.
Switch the internal a11y child indices to 64 bit to
be able to handle this properly internally.
Since the platform APIs (at least AT-SPI on Linux and
IAccessible2 on Windows; from what I can see LO's macOS
a11y bridge doesn't directly expose the child index)
are still restricted to 32 bit, larger child indices
still cannot be exposed via the platform APIs.
As a consequence, use of the the IAccessible2 and
AT-SPI methods that use the child index remains
problematic in those cases where the child index
is larger. However, as an alternative to using the
AT-SPI Table interface and the IAccessibleTable/
IAccessibleTable2 interfaces with the child index
to retrieve information about a specific cell,
both AT-SPI and IAccessible2 also provide interfaces
to retrieve that information directly
from the cell object (TableCell interface for AT-SPI,
IAccessibleTableCell for IAccessible2).
Those interfaces are already implemented/exposed
for winaccessibility (s. `CAccTable`) and the
qt5/qt6/kf5 VCL plugins (s. the `QAccessibleTableCellInterface`
methods implemented in `QtAccessibleInterface`).
With the switch to 64-bit internal a11y child indices,
these now behave correctly for cells with a child
index that doesn't fit into 32 bit as well.
NVDA on Windows already uses the IAccessibleTableCell
interface and thus announcing focused cells works fine
with this change in place.
Orca on Linux currently doesn't make use of the AT-SPI
TableCell interface yet, but with a suggested change to
do so [1], announcement of selected cells works
with the qt6 VCL plugin with a current qtbase dev branch
as well - when combined with the suggested changes
to implement support for the AT-SPI TableCell interface
in Qt [2] [3] and the LO change based on that [4] and
a fix for a nullptr dereference [5].
The gtk3 VCL plugin doesn't expose the AT-SPI
TableCell interface yet, but once it does so
(via `AtkTableCell`), it also works with the
suggested Orca change [1] in place.
(Adding that is planned for an upcoming change,
works with a local WIP patch.)
For handling return values that are larger than what
platform APIs support, the following approach has
been chosen for now:
1) When the return value is for the count of
(selected) children, the maximum value N
supported by the platform API is returned.
(This is what `ScAccessibleTableBase::getAccessibleChildCount`
did previously.)
The first N elements can be accessed by their
actual (selection) indices.
2) When the return value is the child/cell index,
-2 is returned for objects whose index is greater
than the maximum value supported by the platform
API.
Using a non-negative value would mean that the
index would refer to *another* actually existing
child. A child index of -1 on the other hand
tends to be interpreted as "child is invalid" or
"object isn't actually a child of its (previous)
parent any more)". For the Orca case, this would
result in objects with a child index of -1
not being announced, as they are considered
"zombies" [6].
What's still somewhat problematic is the case where
more than 2^31 children are *selected*, since access
to those children still happens by the index into
the selection in the platform APIs, and not all
selected items are accessible this way.
(Screen readers usually just retrieve
the first and last element from the selection and
announce those.)
Orca already seems to apply different handling for the
case for fully selected rows and columns, so
"All cells selected" or "Columns ... to ... selected"
is announced just fine even if more than 2^31
cells are selected.
(Side note: While Microsoft User Interface
Automation - UIA - also uses 32-bit indices, it also
has specific methods in the ISelectionProvider2
interface that allow to explicitly retrieve the
first and last selected item,
`ISelectionProvider2::get_FirstSelectedItem` and
`ISelectionProvider2::get_LastSelectedItem`, but
we currently don't support UIA on Windows.)
Bound checks at the beginning of the methods from the
`XAccessibleContext`, `XAccessibleSelection` and
`XAccessibleTable` interfaces that take a child index
(or in helper methods called by those) should generally
already prevent too large indices from being passed to
the methods in the lower layer code that take smaller
integer types. Such bound checking has been
been added in various places where it wasn't present yet.
If there any remaining issues of this
kind that show after this commit, they can probably be
solved in a similar way (s.e.g. the change to
`AccessibleBrowseBox::getAccessibleChild` in this
commit).
A few asserts were also added at
places where my understanding is that values shouldn't
be larger than what is supported by a called method
anyway.
A test case will be added in a following change.
[1] https://gitlab.gnome.org/GNOME/orca/-/merge_requests/131
[2] https://codereview.qt-project.org/c/qt/qtbase/+/428566
[3] https://codereview.qt-project.org/c/qt/qtbase/+/428567
[4] https://gerrit.libreoffice.org/c/core/+/138750
[5] https://codereview.qt-project.org/c/qt/qtbase/+/430157
[6] https://gitlab.gnome.org/GNOME/orca/-/blob/82c8542002e36e0d3d918088d583162d25136143/src/orca/script_utilities.py#L5155
Change-Id: I3af590c988b0e6754fc72545918412f39e8fea07
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/139258
Tested-by: Jenkins
Reviewed-by: Michael Weghorn <m.weghorn@posteo.de>
...so that its TOOLS_WARN_EXCEPTION can be used in
comphelper/source/misc/logging.cxx in a follow-up commit. (And while at it,
rename from diangose_ex.h to the more appropriate diagnose_ex.hxx. The
comphelper module is sufficiently low-level for this immediate use case, so use
that at least for now; o3tl might be even more suitable but doesn't have a
Library until now. Also, for the immediate use case it would have sufficed to
only break DbgGetCaughtException, exceptionToString, TOOLS_WARN_EXCEPTION,
TOOLS_WARN_EXCEPTION_IF, and TOOLS_INFO_EXCEPTION out of
include/tools/diagnose_ex.h into an additional new
include/comphelper/diagnose_ex.hxx, but its probably easier overall to just move
the complete include file as is.)
Change-Id: I9f3222d4ccf1a9ac29d7eb9ba1530d53e2affaee
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/138451
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>
By default Rectangle uses closed interval, if we really want to use half
open intervals then we should specifically say as such in the name.
Change-Id: Id7a91120ba1a1a4bc330014216b73a692dbf03a2
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/136575
Tested-by: Jenkins
Reviewed-by: Tomaž Vajngerl <quikee@gmail.com>
which is internal API, unused (as far as I can tell) by external
users.
This state is purely a bitset
(as implemented by utl::AccessibleStateSetHelper)
so we can just return it as a 64-bit value.
This shaves significant time off the performance profiles
of code that loads very complex shapes, because this state
is frequently used, and we no longer need to allocate a return
value on the heap for every call.
Change-Id: Icf1b3bd367c256646ae9015f9127025f59459c2c
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/136786
Reviewed-by: Michael Weghorn <m.weghorn@posteo.de>
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
See tdf#42949 for motivation
This time using the new --noexclude switch to recheck validity
of the excludelist; these were the obsolete exclusions
Change-Id: Ifdf79b30ebaf198082c2194611a2ed2b664e6f1f
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/133309
Tested-by: Jenkins
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>
Setting it didn't have any effect in practice:
If set to `true`, it resulted in
`vcl::unohelper::NotifyAccessibleStateEventGlobally` getting
called, which calls
`XExtendedToolkit::fireFocusGained` or
`XExtendedToolkit::fireFocusLost`, but the only implementations
in `VCLXToolkit` do nothing.
Interestingly, the documentation for `XExtendedToolkit` in
`offapi/com/sun/star/awt/XExtendedToolkit.idl` says:
> @deprecated
> This interface was only implemented in an intermediate developer
> release anyway.
>
> @since OOo 1.1.2
but the interface is still used in various places across the
code base...
Change-Id: I4681c28c9d18cf1953be5127765f4aa94563662d
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/131735
Tested-by: Jenkins
Reviewed-by: Michael Weghorn <m.weghorn@posteo.de>
The header got some changes:
1. Move UnoTunnelIdInit and isUnoTunnelId into 'comphelper' namespace
2. Rename UnoTunnelIdInit to UnoIdInit, as a precondition to replace
of uses of OImplementationId with it, including in XTypeProvider
3. Introduce convenience functions 'getSomething_cast' to cast between
sal_Int64 and object pointers uniformly.
4. Rename getUnoTunnelImplementation to getFromUnoTunnel, both to make
it a bit shorter, and to reflect its function better. Templatize it
to take also css::uno::Any for convenience.
5. Introduce getSomethingImpl, inspired by sw::UnoTunnelImpl; allow it
handle cases both with and without fallback to parent.
6. Adjust UNO3_GETIMPLEMENTATION_* macros
TODO (in separate commits):
- Drop sw::UnoTunnelImpl and sw::UnoTunnelGetImplementation
- Replace all uses of OImplementationId in core with UnoIdInit
- Deprecate OImplementationId in <cppuhelper/typeprovider.hxx>
- Change implementations of getSomething to use getSomethingImpl
- Revise uses of getSomething to use getFromUnoTunnel
Change-Id: If4a3cb024130f1f552f988f0479589da1cd066e7
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/122022
Tested-by: Jenkins
Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com>
The change allowed to simplify many places where previously this API was
used, to avoid inefficient calculations (e.g., moving rectangle keeping
its size, and then immediately changing the size).
Change-Id: Ica2dc594d91cae83e2c2740c1f4fb23f44998916
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/120461
Tested-by: Jenkins
Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com>
as part of a longer-term goal of doing our
widget rendering only inside a top-level render-
context.
I moved all of the OutputDevice-related code that existed in vcl::Window
into a new subclass of OutputDevice called WindowOutputDevice.
Notes for further work
(*) not sure why we are getting an 1x1 surface in
SvpSalGraphics::releaseCairoContext, but to fix it I clamp
the size there
(*) might have to dump VCLXDevice, and move it's code down into VCLXWindow and VCLXVirtualDevice
(*) can we remove use of VCLXDevice in other places, in favour of just talking to the VCL code?
Change-Id: I105946377f5322677d6f7d0c1c23847178a720b6
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/113204
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
"Find explicit casts from signed to unsigned integer in comparison against
unsigned integer, where the cast is presumably used to avoid warnings about
signed vs. unsigned comparisons, and could thus be replaced with
o3tl::make_unsigned for clairty." (compilerplugins/clang/unsignedcompare.cxx)
o3tl::make_unsigned requires its argument to be non-negative, and there is a
chance that some original code like
static_cast<sal_uInt32>(n) >= c
used the explicit cast to actually force a (potentially negative) value of
sal_Int32 to be interpreted as an unsigned sal_uInt32, rather than using the
cast to avoid a false "signed vs. unsigned comparison" warning in a case where
n is known to be non-negative. It appears that restricting this plugin to non-
equality comparisons (<, >, <=, >=) and excluding equality comparisons (==, !=)
is a useful heuristic to avoid such false positives. The only remainging false
positive I found was 0288c8ffec "Rephrase cast
from sal_Int32 to sal_uInt32".
But which of course does not mean that there were no further false positivies
that I missed. So this commit may accidentally introduce some false hits of the
assert in o3tl::make_unsigned. At least, it passed a full (Linux ASan+UBSan
--enable-dbgutil) `make check && make screenshot`.
It is by design that o3tl::make_unsigned only accepts signed integer parameter
types (and is not defined as a nop for unsigned ones), to avoid unnecessary uses
which would in general be suspicious. But the STATIC_ARRAY_SELECT macro in
include/oox/helper/helper.hxx is used with both signed and unsigned types, so
needs a little oox::detail::make_unsigned helper function for now. (The
ultimate fix being to get rid of the macro in the first place.)
Change-Id: Ia4adc9f44c70ad1dfd608784cac39ee922c32175
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/87556
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>
* Recheck after recent refactorings and improvements in f-u-i
* Drop now unused TabPageIds.h
* The problem noticed in bug #119699 now seems to be gone too
so drop those lines from the blacklist.
Found with bin/find-unneeded-includes
Only removal proposals are dealt with here.
Change-Id: I44f26c7370f5328c8f67ac61cd8f0cdb29077f15
Reviewed-on: https://gerrit.libreoffice.org/83182
Tested-by: Jenkins
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>
...at which point MutexContainer becomes all-inline and need no longer be
OOO_DLLPUBLIC_CHARTTOOLS
Change-Id: I2f9c089a1189cc8c0fe5cf1760f62e71c5bb7f51
Reviewed-on: https://gerrit.libreoffice.org/72052
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>
Also use scope where possible. This allows to limit guard scope at
language level; visualises the scope clearly; and helps avoiding
errors like fixed in commit 61e4437c85.
Change-Id: Ifeca96e2df8e8a0897770d9546b2536806275f41
Reviewed-on: https://gerrit.libreoffice.org/70376
Tested-by: Jenkins
Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com>
Since it is now possible to use C++14, it's time to replace
the temporary solution with the standard one
Change-Id: I2ba0b9b44971166bd79527b52745f3c40dc14387
Reviewed-on: https://gerrit.libreoffice.org/66490
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
Found with bin/find-unneeded-includes
Only removal proposals are dealt with here.
Change-Id: Icebcf1a6ab073dce935a74ce79ee0f302b62e8a8
Reviewed-on: https://gerrit.libreoffice.org/65947
Tested-by: Jenkins
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>
Found with bin/find-unneeded-includes
Only removal proposals are dealt with here.
Change-Id: Ie87d27dd2c385a63349e0b322fd067ba03d2d152
Reviewed-on: https://gerrit.libreoffice.org/64479
Tested-by: Jenkins
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>
Found with bin/find-unneeded-includes
Only removal proposals are dealt with here.
Change-Id: If1b2e04872eb0dd6725802c1709a9085f4cd8c91
Reviewed-on: https://gerrit.libreoffice.org/64141
Tested-by: Jenkins
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>
Found with bin/find-unneeded-includes
Only removal proposals are dealt with here.
Change-Id: I5f445522e9a1ccd60555e992adf345b254b2ac83
Reviewed-on: https://gerrit.libreoffice.org/60335
Tested-by: Jenkins
Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>
Noel Grandin