caret()

Kinesis::AABB2D MayaFlux::Portal::Text::TextRun::caret	(	size_t	byte_offset,
		float	width_px
	)

Pixel rectangle of a caret at a byte offset of the text.

Spans one line height on the line the offset falls on, in layout pixels with y down, so min.y is the top.

Parameters

byte_offset	Codepoint boundary in the text.
width_px	Caret width in pixels.

Definition at line 108 of file TextRun.cpp.

{
    if (stale()) {
        lay_out_text();
    }
    if (!m_atlas) {
        return {};
    }
 
    const auto ascender = static_cast<float>(m_atlas->ascender());
    GlyphAtlas& current = *atlas();
    const PenPosition pen = x_at(
        m_text, current, byte_offset, 0.F, ascender, m_params.render_bounds.x, k_tab_width);
 
    const float top = pen.y - ascender;
    return {
        .min = { pen.x, top },
        .max = { pen.x + width_px, top + static_cast<float>(current.line_height()) },
    };
}

References MayaFlux::Portal::Text::GlyphAtlas::ascender(), atlas(), current, lay_out_text(), m_atlas, m_params, m_text, MayaFlux::Portal::Text::PressParams::render_bounds, stale(), MayaFlux::Portal::Text::PenPosition::x, MayaFlux::Portal::Text::x_at(), and MayaFlux::Portal::Text::PenPosition::y.

Here is the call graph for this function: