Get screen rect of Hyperlink

laudaicat · 18 Jul 2025, 12:14

Hi,
I working on tutorial for player. I want to highlight and spot to HyperLink in Run (RichText), assist player click to that. I try to get screen position but it always give me Empty Rect.

This is what i tried:

pThis->UpdateLayout();
        auto* hyperlink = Noesis::DynamicCast<Noesis::Hyperlink*>(args.source);
        //auto renderBounds = hyperlink->GetRenderBounds();
        float width = hyperlink->GetActualWidth();
        float height = hyperlink->GetActualHeight();
        auto* text =
          Noesis::DynamicCast<Noesis::TextBlock*>(hyperlink->GetParent());
        //auto* parent = g_noesis().findVisualParent<Noesis::TextBlock>(pThis);
        auto local = Noesis::VisualTreeHelper::GetContentBounds(hyperlink);
        // If bounds are still empty, try getting from parent TextBlock
        if (local.IsEmpty()) {
          local = Noesis::VisualTreeHelper::GetDescendantBounds(text);
        }

        auto tlInTb =
          hyperlink->TranslatePoint(Noesis::Point(local.x, local.y), text);
        auto transform = hyperlink->TransformToAncestor(text);

And, it great if we can get multiline rect.

18 Jul 2025, 12:55

Hi,

There is no API to get the bounding box of a text Inline, but maybe you can achieve what you want just by using styles.

You can define a Style with triggers that can change the appearance of the Hyperlink to highlight it.

Could something like that work for you?

laudaicat · 18 Jul 2025, 13:28

In tutorial mode, i want make semi black screen except that hyperlink with arrow point to that link. For now, changed hyperlink style and spot rect to entire RichText area, but better if i can spot extractly that hyperlink i want user click to.

24 Jul 2025, 11:15

The only thing that can be done with a TextBlock is obtaining its internal FormattedText and then ask the x,y position of a character index inside the text:

formattedText->GetGlyphPosition(index, false, x, y);

The FormattedText provides also info about the lines rendered by the TextBlock:

uint32_t numLines = formattedText->GetNumLines();
const LineInfo& line = formattedText->GetLineInfo(index);

Maybe you can use that to calculate the bounding box of the Hyperlink.

laudaicat · 26 Jul 2025, 10:49

Thanks for your suggest, i solved my issue.

04 Aug 2025, 13:12

Great to hear that, did you use the FormattedText API to achieve it?

I'm marking this as solved.

Get screen rect of Hyperlink Topic is solved

Get screen rect of Hyperlink

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