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Add support for DECSCUSR "0" to restore cursor to user default #7379

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Sep 4, 2020
Merged

Add support for DECSCUSR "0" to restore cursor to user default #7379

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4552c63
Init
skyline75489 Aug 24, 2020
d4bf404
Fix
skyline75489 Aug 24, 2020
93aa1d8
Style
skyline75489 Aug 24, 2020
14b0ff3
Merge branch 'master' into chesterliu/dev/decscusr-0
skyline75489 Aug 25, 2020
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skyline75489 Aug 25, 2020
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Merge branch 'chesterliu/dev/decscusr-0' of https://github.com/skylin…
skyline75489 Aug 25, 2020
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Naming
skyline75489 Aug 25, 2020
4c5bdf8
Oh well
skyline75489 Aug 25, 2020
96dbe12
Unused
skyline75489 Aug 25, 2020
2915aff
Should you blink, sir
skyline75489 Aug 25, 2020
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Push
skyline75489 Aug 28, 2020
3a186ad
Fix
skyline75489 Aug 28, 2020
c4ae1dc
AdaptDispatch
skyline75489 Aug 30, 2020
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Resolve comments
skyline75489 Aug 30, 2020
88432d3
Update src/terminal/adapter/ut_adapter/adapterTest.cpp
DHowett Sep 4, 2020
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2 changes: 2 additions & 0 deletions src/cascadia/TerminalCore/Terminal.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -134,6 +134,8 @@ void Terminal::UpdateSettings(ICoreSettings settings)
cursorShape);
}

_defaultCursorShape = cursorShape;

for (int i = 0; i < 16; i++)
{
_colorTable.at(i) = settings.GetColorTableEntry(i);
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1 change: 1 addition & 0 deletions src/cascadia/TerminalCore/Terminal.hpp
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Expand Up @@ -214,6 +214,7 @@ class Microsoft::Terminal::Core::Terminal final :
std::array<COLORREF, XTERM_COLOR_TABLE_SIZE> _colorTable;
COLORREF _defaultFg;
COLORREF _defaultBg;
CursorType _defaultCursorShape;
bool _screenReversed;

bool _snapOnInput;
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11 changes: 7 additions & 4 deletions src/cascadia/TerminalCore/TerminalApi.cpp
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Expand Up @@ -389,8 +389,10 @@ bool Terminal::SetCursorStyle(const DispatchTypes::CursorStyle cursorStyle) noex

switch (cursorStyle)
{
case DispatchTypes::CursorStyle::BlinkingBlockDefault:
[[fallthrough]];
case DispatchTypes::CursorStyle::UserDefault:
finalCursorType = _defaultCursorShape;
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shouldBlink = true;
break;
case DispatchTypes::CursorStyle::BlinkingBlock:
finalCursorType = CursorType::FullBox;
shouldBlink = true;
Expand All @@ -415,9 +417,10 @@ bool Terminal::SetCursorStyle(const DispatchTypes::CursorStyle cursorStyle) noex
finalCursorType = CursorType::VerticalBar;
shouldBlink = false;
break;

default:
finalCursorType = CursorType::Legacy;
shouldBlink = false;
// Invalid argument should be ignored.
return true;
}

_buffer->GetCursor().SetType(finalCursorType);
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13 changes: 13 additions & 0 deletions src/host/outputStream.cpp
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Expand Up @@ -513,6 +513,19 @@ bool ConhostInternalGetSet::PrivateEraseAll()
return SUCCEEDED(DoSrvPrivateEraseAll(_io.GetActiveOutputBuffer()));
}

// Method Description:
// - Retrieves the current user default cursor style.
// Arguments:
// - style - Structure to receive cursor style.
// Return Value:
// - true if successful. false otherwise.
bool ConhostInternalGetSet::GetUserDefaultCursorStyle(CursorType& style)
{
const auto& gci = ServiceLocator::LocateGlobals().getConsoleInformation();
style = gci.GetCursorType();
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If we’re on older Windows 10 or Windows 7, will this still work? I assume it will always return legacy.

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I believe the VT support was only added to conhost in build 10586 of Windows 10, so nothing prior to that should have any of this code. Maybe one of the core devs can confirm this, but I don't think we need to worry about older versions of Windows at all.

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Yeah, this is totally fine. Conhost is also shipped as a totally independent unit -- so if conhost can run on an older version of Windows, it will bring with it full VT support and this cursor change.

(incidentally, it works on Windows 8.1 and brings full VT support 😉)

return true;
}

// Routine Description:
// - Connects the SetCursorStyle call directly into our Driver Message servicing call inside Conhost.exe
// SetCursorStyle is an internal-only "API" call that the vt commands can execute,
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1 change: 1 addition & 0 deletions src/host/outputStream.hpp
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Expand Up @@ -107,6 +107,7 @@ class ConhostInternalGetSet final : public Microsoft::Console::VirtualTerminal::
bool PrivatePrependConsoleInput(std::deque<std::unique_ptr<IInputEvent>>& events,
size_t& eventsWritten) override;

bool GetUserDefaultCursorStyle(CursorType& style) override;
bool SetCursorStyle(CursorType const style) override;
bool SetCursorColor(COLORREF const color) override;

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4 changes: 2 additions & 2 deletions src/terminal/adapter/DispatchTypes.hpp
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Expand Up @@ -216,8 +216,8 @@ namespace Microsoft::Console::VirtualTerminal::DispatchTypes

enum class CursorStyle : unsigned int
{
BlinkingBlock = 0,
BlinkingBlockDefault = 1,
UserDefault = 0, // Implemented as "restore cursor to user default".
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BlinkingBlock = 1,
SteadyBlock = 2,
BlinkingUnderline = 3,
SteadyUnderline = 4,
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9 changes: 8 additions & 1 deletion src/terminal/adapter/adaptDispatch.cpp
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Expand Up @@ -2160,8 +2160,11 @@ bool AdaptDispatch::SetCursorStyle(const DispatchTypes::CursorStyle cursorStyle)

switch (cursorStyle)
{
case DispatchTypes::CursorStyle::UserDefault:
_pConApi->GetUserDefaultCursorStyle(actualType);
fEnableBlinking = true;
break;
case DispatchTypes::CursorStyle::BlinkingBlock:
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case DispatchTypes::CursorStyle::BlinkingBlockDefault:
fEnableBlinking = true;
actualType = CursorType::FullBox;
break;
Comment on lines 2167 to 2170
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@j4james j4james Aug 25, 2020 •
edited
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I don't think the behaviour for conhost is right. We should either leave UserDefault as an alias for BlinkingBlock, which is at least compatible with the DEC standard, or we should try and map it to the actual user preference (which I'm honestly not sure how to do). Worst case we could possibly map it to blinking legacy, which I think is the system default. But as it stands, it looks like you're going to get non-blinking legacy, which is neither one thing nor the other.

Edit: Sorry this is essentially a long-winded dup of DHowett's comment.

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More detail = more good

Expand All @@ -2187,6 +2190,10 @@ bool AdaptDispatch::SetCursorStyle(const DispatchTypes::CursorStyle cursorStyle)
fEnableBlinking = false;
actualType = CursorType::VerticalBar;
break;

default:
// Invalid argument should be handled by the connected terminal.
return false;
}

bool success = _pConApi->SetCursorStyle(actualType);
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1 change: 1 addition & 0 deletions src/terminal/adapter/conGetSet.hpp
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Expand Up @@ -70,6 +70,7 @@ namespace Microsoft::Console::VirtualTerminal
virtual bool PrivateEnableAnyEventMouseMode(const bool enabled) = 0;
virtual bool PrivateEnableAlternateScroll(const bool enabled) = 0;
virtual bool PrivateEraseAll() = 0;
virtual bool GetUserDefaultCursorStyle(CursorType& style) = 0;
virtual bool SetCursorStyle(const CursorType style) = 0;
virtual bool SetCursorColor(const COLORREF color) = 0;
virtual bool PrivatePrependConsoleInput(std::deque<std::unique_ptr<IInputEvent>>& events,
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6 changes: 6 additions & 0 deletions src/terminal/adapter/ut_adapter/adapterTest.cpp
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Expand Up @@ -434,6 +434,12 @@ class TestGetSet final : public ConGetSet
return TRUE;
}

bool GetUserDefaultCursorStyle(CursorType& style) override
{
style = CursorType::Legacy;
return true;
}

bool SetCursorStyle(const CursorType cursorType) override
{
Log::Comment(L"SetCursorStyle MOCK called...");
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2 changes: 1 addition & 1 deletion src/terminal/parser/OutputStateMachineEngine.hpp
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Expand Up @@ -238,7 +238,7 @@ namespace Microsoft::Console::VirtualTerminal
bool _GetOscSetColor(const std::wstring_view string,
DWORD& rgb) const noexcept;

static constexpr DispatchTypes::CursorStyle DefaultCursorStyle = DispatchTypes::CursorStyle::BlinkingBlockDefault;
static constexpr DispatchTypes::CursorStyle DefaultCursorStyle = DispatchTypes::CursorStyle::UserDefault;
bool _GetCursorStyle(const gsl::span<const size_t> parameters,
DispatchTypes::CursorStyle& cursorStyle) const noexcept;

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