Method HitTestInteractables

src/windows/MessageList.cpp:1284–1356

}

void MessageList::HitTestInteractables(POINT pt, BOOL& hit)
{
	auto msg = FindMessageByPoint(pt);

	if (msg == m_messages.end())
	{
	_fail:
		if (m_highlightedInteractableMessage)
		{
			auto msg2 = FindMessage(m_highlightedInteractableMessage);
			if (msg2 != m_messages.end())
			{
				for (auto& x : msg2->m_interactableData) {
					if (x.m_bHighlighted) {
						x.m_bHighlighted = false;
						if (x.ShouldInvalidateOnHover()) {
							RECT rc = RectToNative(x.m_rect);
							InvalidateRect(m_hwnd, &rc, FALSE);
						}
					}
				}
			}
		}

		m_highlightedInteractable = SIZE_MAX;
		m_highlightedInteractableMessage = 0;
		return;
	}

	InteractableItem* pItem = NULL;
	for (size_t i = 0; i < msg->m_interactableData.size(); i++)
	{
		InteractableItem* pData = &msg->m_interactableData[i];

		RECT rect = RectToNative(pData->m_rect);
		if (PtInRect(&rect, pt)) {
			pItem = pData;
			break;
		}
	}

	if (!pItem) {
		msg = m_messages.end();
		goto _fail;
	}

	hit = TRUE;
	if (pItem->m_wordIndex == m_highlightedInteractable)
		return;

	// find old interactable
	for (size_t i = 0; i < msg->m_interactableData.size(); i++) {
		InteractableItem* pData = &msg->m_interactableData[i];
		if (pData->m_wordIndex == m_highlightedInteractable) {
			pData->m_bHighlighted = false;
			if (pData->ShouldInvalidateOnHover()) {
				RECT rect = RectToNative(pData->m_rect);
				InvalidateRect(m_hwnd, &rect, FALSE);