// Lua: ucg.setClipRange( self, x, y, w, h )
static int lucg_setClipRange( lua_State *L )
{
lucg_userdata_t *lud;
if ((lud = get_lud( L )) == NULL)
return 0;
ucg_int_t args[4];
lucg_get_int_args( L, 2, 4, args );
ucg_SetClipRange( LUCG, args[0], args[1], args[2], args[3] );
return 0;
}
void set_clip_range(ucg_t *ucg)
{
prepare_picture(ucg);
ucg_SetFontPosBaseline(ucg);
ucg_SetFont(ucg, ucg_font_ncenB18_tf);
ucg_SetColor(ucg, 0, 255, 255, 255); /* draw white A */
ucg_DrawGlyph(ucg, 50, 40, 0, 'A');
ucg_SetClipRange(ucg, 57, 20, 30, 15); /* restrict area */
ucg_SetColor(ucg, 0, 0, 0, 127);
ucg_DrawBox(ucg, 0, 0, 128, 64); /* fill the restricted area with dark blue */
ucg_SetColor(ucg, 0, 0, 0, 255);
ucg_DrawGlyph(ucg, 50, 40, 0, 'A'); /* draw light blue A */
hrule(ucg, ox+57, 20, 30, 0);
vrule(ucg, ox+57+30, 20, 15, 1);
pos(ucg, ox+50, 40, 0);
save_picture(ucg, "set_clip_range");
}