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Width of a glyph in a text page-object's font

Source: R/glyph_paths.R
pdf_glyph_width.Rd

Returns the advance width of the glyph in PDF user-space points at the requested font_size. Useful for measuring glyph layout independent of the bounding-box reported by pdf_text_chars(), or for spot-checking that a font's reported width matches what it draws.

Usage

pdf_glyph_width(obj, glyph_code, font_size = NA_real_)

Arguments

obj

A pdfium_obj of type "text".

glyph_code

Single non-negative integer; see the section above.

font_size

Numeric font size in PDF points. When NA (default), uses the text object's own font size — the most common choice when matching what is drawn on the page.

Value

Numeric scalar, the glyph's width in PDF points. NA when PDFium reports failure (typically a font / glyph_code mismatch).

Details

Wraps FPDFTextObj_GetFont -> FPDFFont_GetGlyphWidth.

See also

pdf_glyph_path(), pdf_text_font_metrics().