[英]What is the best way to display a large text file in MATLAB GUIDE?
如何使用MATLAB GUIDE控件在GUI中顯示文本文件的內容? 文本文件可能很長或很寬,因此它應該具有垂直和水平滾動條的能力。
多行編輯框可能是顯示文本的最佳選擇。 例:
%# read text file lines as cell array of strings
fid = fopen( fullfile(matlabroot,'license.txt') );
str = textscan(fid, '%s', 'Delimiter','\n'); str = str{1};
fclose(fid);
%# GUI with multi-line editbox
hFig = figure('Menubar','none', 'Toolbar','none');
hPan = uipanel(hFig, 'Title','Display window', ...
'Units','normalized', 'Position',[0.05 0.05 0.9 0.9]);
hEdit = uicontrol(hPan, 'Style','edit', 'FontSize',9, ...
'Min',0, 'Max',2, 'HorizontalAlignment','left', ...
'Units','normalized', 'Position',[0 0 1 1], ...
'String',str);
%# enable horizontal scrolling
jEdit = findjobj(hEdit);
jEditbox = jEdit.getViewport().getComponent(0);
jEditbox.setWrapping(false); %# turn off word-wrapping
jEditbox.setEditable(false); %# non-editable
set(jEdit,'HorizontalScrollBarPolicy',30); %# HORIZONTAL_SCROLLBAR_AS_NEEDED
%# maintain horizontal scrollbar policy which reverts back on component resize
hjEdit = handle(jEdit,'CallbackProperties');
set(hjEdit, 'ComponentResizedCallback',...
'set(gcbo,''HorizontalScrollBarPolicy'',30)')
要啟用水平滾動,我們必須獲得嵌入式JScrollPane java組件的句柄。 我正在使用優秀的FINDJOBJ函數。 然后我們設置HorizontalScrollBarPolicy
屬性javax.swing.JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED
(= 30)在此解釋后 。 我也禁用了文本的編輯(只讀)。
這是我對名為“textfile.txt”的通用文本文件的解決方案:
f = figure('menu','none','toolbar','none');
fid = fopen('textfile.txt');
ph = uipanel(f,'Units','normalized','position',[0.4 0.3 0.5 0.5],'title',...
'Display window');
lbh = uicontrol(ph,'style','listbox','Units','normalized','position',...
[0 0 1 1],'FontSize',9);
indic = 1;
while 1
tline = fgetl(fid);
if ~ischar(tline),
break
end
strings{indic}=tline;
indic = indic + 1;
end
fclose(fid);
set(lbh,'string',strings);
set(lbh,'Value',1);
set(lbh,'Selected','on');
這是我的解決方案。 祝好運
fid = fopen(filename);
str = textscan(fid, '%s', 'Delimiter','\n'); str = str{1};
fclose(fid);
f=figure;
hPan = uipanel(f,'Units','normalized');
uicontrol(hPan, 'Style','listbox', ...
'HorizontalAlignment','left', ...
'Units','normalized', 'Position',[0 0 1 1], ...
'String',str);
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