NAME

XFontSetExtents - XFontSetExtents structure

STRUCTURES

The _X_F_o_n_t_S_e_t_E_x_t_e_n_t_s structure contains:


typedef struct {
     XRectangle max_ink_extent;/* over all drawable characters */
     XRectangle max_logical_extent;/* over all drawable characters */
} XFontSetExtents;


The _X_R_e_c_t_a_n_g_l_e structures used to return font set metrics are the usual Xlib screen-oriented rectangles with x, y giving the upper left corner, and width and height always positive.

The max_ink_extent member gives the maximum extent, over all drawable characters, of the rectangles that bound the character glyph image drawn in the foreground color, relative to a constant origin. See _X_m_b_T_e_x_t_E_x_t_e_n_t_s and _X_w_c_T_e_x_t_E_x_t_e_n_t_s for detailed semantics.

The max_logical_extent member gives the maximum extent, over all drawable characters, of the rectangles that specify minimum spacing to other graphical features, relative to a constant origin. Other graphical features drawn by the client, for example, a border surrounding the text, should not intersect this rectangle. The max_logical_extent member should be used to compute minimum interline spacing and the minimum area that must be allowed in a text field to draw a given number of arbitrary characters.

Due to context-dependent rendering, appending a given character to a string may change the string's extent by an amount other than that character's individual extent.

SEE ALSO

XCreateFontSet(3X11), XExtentsOfFontSet(3X11), XFontsOfFontSet(3X11)
_X_l_i_b _- _C _L_a_n_g_u_a_g_e _X _I_n_t_e_r_f_a_c_e