copy()

MAYAFLUX_API CopiedText MayaFlux::Portal::Text::copy	(	std::string_view	text,
		const LayoutResult &	layout,
		size_t	a,
		size_t	b
	)

Copy a byte range: the text it spans, and the quads that render it.

start/end are normalized (min/max) and clamped to [0, text.size()]. Both are assumed to already be codepoint boundaries, the same assumption next_codepoint_offset()/previous_codepoint_offset() maintain for a caller's cursor; this does not re-snap them to one.

Quads are taken from layout, matched by GlyphQuad::byte_offset falling in the normalized range, at whatever position they were laid out at. Shift them yourself if the copy needs to be positioned relative to its own origin rather than the source layout's. layout must be the result of laying out this same text (or one whose byte offsets line up with it); passing a layout for unrelated text returns a meaningless, but not unsafe, quads list.

Parameters

text	Source UTF-8 string the byte range indexes into.
layout	LayoutResult produced from that same text.
a	One end of the byte range.
b	The other end of the byte range.

Returns

The extracted text, its normalized range, and matching quads.

Definition at line 217 of file TypeSetter.cpp.

{
    CopiedText out;
    out.start = std::min(std::min(a, b), text.size());
    out.end = std::min(std::max(a, b), text.size());
 
    if (out.start >= out.end) {
        return out;
    }
 
    out.text = std::string(text.substr(out.start, out.end - out.start));
 
    for (const auto& q : layout.quads) {
        if (q.byte_offset >= out.start && q.byte_offset < out.end) {
            out.quads.push_back(q);
        }
    }
 
    return out;
}

References a, b, out, q, MayaFlux::Portal::Text::LayoutResult::quads, and MayaFlux::Portal::Text::CopiedText::start.