ScaledFont.glyphExtents

void glyphExtents(cairo.glyph.Glyph glyphs, int numGlyphs, out cairo.types.TextExtents extents)

Gets the extents for an array of glyphs. The extents describe a user-space rectangle that encloses the "inked" portion of the glyphs, (as they would be drawn by [cairo.context.Context.showGlyphs] if the cairo graphics state were set to the same font_face, font_matrix, ctm, and font_options as scaled_font). Additionally, the x_advance and y_advance values indicate the amount by which the current point would be advanced by [cairo.context.Context.showGlyphs].

Note that whitespace glyphs do not contribute to the size of the rectangle (extents.width and extents.height).

Parameters

`glyphs`	an array of glyph IDs with X and Y offsets.
`numGlyphs`	the number of glyphs in the glyphs array
`extents`	a #cairo_text_extents_t which to store the retrieved extents.