cairoScaledFontGlyphExtents      package:RGtk2      R Documentation

_c_a_i_r_o_S_c_a_l_e_d_F_o_n_t_G_l_y_p_h_E_x_t_e_n_t_s

_D_e_s_c_r_i_p_t_i_o_n:

     Gets the extents for a list of glyphs. The extents describe a
     user-space rectangle that encloses the "inked" portion of the
     glyphs, (as they would be drawn by 'cairoShowGlyphs' 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 'cairoShowGlyphs'.

_U_s_a_g_e:

     cairoScaledFontGlyphExtents(scaled.font, glyphs, num.glyphs)

_A_r_g_u_m_e_n_t_s:

'scaled.font': ['CairoScaledFont']  a 'CairoScaledFont'

'glyphs': ['CairoGlyph']  a list of glyph IDs with X and Y offsets.

'num.glyphs': [integer]  the number of glyphs in the 'glyphs' list

_D_e_t_a_i_l_s:

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

_V_a_l_u_e:

     A list containing the following elements: 

'extents': ['CairoTextExtents']  a 'CairoTextExtents' which to store
          the retrieved extents.

_A_u_t_h_o_r(_s):

     Derived by RGtkGen from GTK+ documentation

