In case of multiple contexts I need the ActivateKeyboard of the system interface to provide the context parameter

[huiseliming]

Can context be provided in this function
virtual void Rml::SystemInterface::ActivateKeyboard(Rml::Vector2f caret_position, float line_height) override;
like
virtual void Rml::SystemInterface::ActivateKeyboard(Rml::Context* context, Rml::Vector2f caret_position, float line_height) override;

I need to get context to implement unreal ITextInputMethodContext to use IME

In the following two functions I am missing context
bool FRmlTextInputMethodContext::GetTextBounds(const uint32 BeginIndex, const uint32 Length, FVector2D& Position, FVector2D& Size)
{
if (RmlWidget.IsValid())
{
CUnrealRmlSystemInterface* SystemInterface = static_cast<CUnrealRmlSystemInterface*>(Rml::GetSystemInterface());
if (SystemInterface)
{
//// Let the IME editor follow the cursor
//Position = FVector2D(CachedGeometry.AbsolutePosition.X + ImGuiContext->PlatformImeLastPos.x,
// CachedGeometry.AbsolutePosition.Y + ImGuiContext->PlatformImeLastPos.y + 20);
}
}
return false;
}

void FRmlTextInputMethodContext::EndComposition()
{
if (bIsComposing)
{
bIsComposing = false;

	if (RmlWidget.IsValid())
	{
		CUnrealRmlSystemInterface* SystemInterface = static_cast<CUnrealRmlSystemInterface*>(Rml::GetSystemInterface());
		if (SystemInterface)
		{
			auto CharArray = CompositionString.GetCharArray();
			for (int i = 0; i < CharArray.Num(); i++)
			{
				CharArray[i];
				SystemInterface->pro();
			}
			CompositionString.Empty();
			CompositionBeginIndex = 0;
			CompositionLength = 0;
			SelectionRangeBeginIndex = 0;
			SelectionRangeLength = 0;
		}
	}
}

}

[mikke89]

We don't provide the context here in this function, we don't necessarily assume that a keyboard is tied to a context. You will have to find another way to keep track of it.

[mikke89]

Let's continue this discussion in #489.