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.