edit box properties in app designer
2 visualizaciones (últimos 30 días)
Mostrar comentarios más antiguos
Why do you have to set the properties of an app designer edit box object prior to writing text to it for it to render properly? I am trying to display a very long pathname in an edit box of finite width, so I iteratively change the length until a modified version of the filename fits. Here is my code:
function appSetOutputTxt(container, hObject, dspTxt)
s = get(hObject);
% Why do you have to set the edit box properties that you just retrieved in
% order to render text properly?
set(hObject,'FontAngle',s.FontAngle,'FontName',s.FontName,...
'FontSize',s.FontSize,'FontWeight',s.FontWeight);
lstop=false;
pos=get(hObject,'InnerPosition');
strl=pos(3);
edtlength=ceil(strl);
OutString=string(dspTxt);
strlength=length(dspTxt);
while ~lstop
hObject.UserData=dspTxt;
hTest = text(container,'Interpreter','none','Units','pixels',...
'FontAngle',s.FontAngle,'FontName',s.FontName,...
'FontSize',s.FontSize,'FontWeight',s.FontWeight,...
'FontUnits','pixels','String',OutString);
textExt = get(hTest,'Extent');
delete(hTest)
textWidth = ceil(textExt(3)*1.02);
if textWidth>edtlength
strlength=strlength-1;
% if the string is too long, shorten it by one character and try
% again.
OutStringStart=dspTxt(1:floor(strlength*1/3)-3);
OutStringEnd=dspTxt(length(dspTxt)-(floor(strlength*2/3)-1):length(dspTxt));
OutString=strcat(OutStringStart,'...',OutStringEnd);
else
lstop=true;
end
end
set(hObject,'Value',OutString,...
'FontAngle',s.FontAngle,'FontName',s.FontName,...
'FontSize',s.FontSize,'FontWeight',s.FontWeight);
container is an axes object within the app. hObject is the edit box. dspTxt is the full filename we are resizing.
Example:
We start with a filename 'C:\windows\user\someuser\images\savedimages\example\longpath\image.png' and you end up with something like 'C:\windows\...mple\longpath\image.png'
The text doesn't render properly unless the properties that you retrieve with s = get(hObject) are set with the set command. I don't understand why.
4 comentarios
Respuestas (0)
Ver también
Categorías
Más información sobre Environment and Settings en Help Center y File Exchange.
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!