cairoPatternCreateLinear        package:RGtk2        R Documentation

_c_a_i_r_o_P_a_t_t_e_r_n_C_r_e_a_t_e_L_i_n_e_a_r

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

     Create a new linear gradient 'CairoPattern' along the line defined
     by (x0, y0) and (x1, y1).  Before using the gradient pattern, a
     number of color stops should be defined using
     'cairoPatternAddColorStopRgb' or 'cairoPatternAddColorStopRgba'.

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

     cairoPatternCreateLinear(x0, y0, x1, y1)

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

    'x0': [numeric]  x coordinate of the start point

    'y0': [numeric]  y coordinate of the start point

    'x1': [numeric]  x coordinate of the end point

    'y1': [numeric]  y coordinate of the end point

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

     Note: The coordinates here are in pattern space. For a new
     pattern, pattern space is identical to user space, but the
     relationship between the spaces can be changed with
     'cairoPatternSetMatrix'.

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

     ['CairoPattern']  the newly created 'CairoPattern' if successful,
     or an error pattern in case of no memory.

     This function will always return a valid pointer, but if an error
     occurred the pattern status will be set to an error.  To inspect
     the status of a pattern use 'cairoPatternStatus'.

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

     Derived by RGtkGen from GTK+ documentation

