Rewrite the MSAA/UIA integration into conhost #19344
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| const auto& bufferBefore = gci.GetActiveOutputBuffer(); | ||
| const auto cursorBefore = bufferBefore.GetTextBuffer().GetCursor().GetPosition(); | ||
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| auto raise = wil::scope_exit([&bufferBefore, cursorBefore] { |
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hit this with AVRF please. I'm worried about capturing this reference by reference.
can we just capture the pointer itself, since all we do is compare it?
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AFAIK lambda captures behave like auto so bufferBefore would capture a copy, not a reference. But I agree that capturing a pointer would be easier to read and understand.
| // Flags is expected to be 2, 1, or 0. 2 in selecting (whether or not visible), 1 if just visible, 0 if invisible/noselect. | ||
| if (WI_IsFlagSet(gci.Flags, CONSOLE_SELECTING)) | ||
| { | ||
| flags = IAccessibilityNotifier::ConsoleCaretEventFlags::CaretSelection; |
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📝 watch where Selection/Invisible/Visible go
| <ClCompile Include="..\writeData.cpp" /> | ||
| <ClCompile Include="..\_output.cpp" /> | ||
| <ClCompile Include="..\_stream.cpp" /> | ||
| <ClCompile Include="..\AccessibilityNotifier.cpp" /> |
| void RemoteConsoleControl::Control(ControlType, PVOID, DWORD) noexcept | ||
| { | ||
| WI_ASSERT_FAIL(); | ||
| } | ||
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| void RemoteConsoleControl::NotifyWinEvent(DWORD, HWND, LONG, LONG) noexcept | ||
| { | ||
| WI_ASSERT_FAIL(); | ||
| } |
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you need to test this out as a handoff recipient to verify these asserts never hit
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Will do. Theoretically nothing will happen because AccessibilityNotifier only exists if the Window class has been loaded.
| </ClCompile> | ||
| </ItemDefinitionGroup> | ||
| <ItemGroup> | ||
| <ClCompile Include="..\AccessibilityNotifier.cpp" /> |
| bool _fInterceptCopyPaste; | ||
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| bool _TerminalScrolling; | ||
| bool _TerminalScrolling = true; |
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nit we should default to false for compatibility with old console
2 participants
Goal: Remove
CursorBlinker.Problem: Spooky action at a distance via
Cursor::HasMoved.Solution: Moved all the a11y event raising into
_stream.cppand pray for the best.Goal: Prevent node.js from tanking conhost performance via MSAA (WHY).
Problem:
ServiceLocator.Solution: Unserviced the locator. Debounced event raising. Performance increased by >10x.
Problem 2: Lots of files changed.
This PR is a prerequisite for #19330
Validation Steps Performed
Ran NVDA with and without UIA enabled and with different delays. ✅