www.gusucode.com > mbcguitools 工具箱 matlab 源码程序 > mbcguitools/@xregGui/@MBCToolbar/pNumberOfButtonsToRender.m
function nButtons = pNumberOfButtonsToRender(obj, posRect) %PNUMBEROFBUTTONSTORENDER Calculate how many buttons can currently be rendered % % NBUTTONS = PNUMBEROFBUTTONSTORENDER(OBJ, POSRECT) returns the number of % buttons that can be completely rendered using the current setup of the % toolbar. % Copyright 2000-2004 The MathWorks, Inc. and Ford Global Technologies, Inc. ch = obj.Children; if isempty(ch) nButtons = 0; else nButtons = length(ch); for n = 1:nButtons if obj.ButtonEdges(n,2)>(posRect(3)-7) nButtons = n-1; break end end if nButtons>0 && nButtons<length(ch) % Need to ensure there is enough room to render a "more buttons are % hidden" marker at the right hand edge if (posRect(3)-7-obj.ButtonEdges(nButtons,2)) < 9 nButtons = nButtons - 1; end end end