qtextbrowser text view problem

saber

i output a text from qprosess and plase it qtextbrowser .

but problem is , how text is shown in textbrowser .also text warp is not working.

is it possible to set text as terminal text ? i am talking about spaces between text ?

VRonin

before writing anything in it, you can use

textBrowser->setLineWrapMode(QTextEdit::NoWrap);
textBrowser->setCurrentFont(QFontDatabase::systemFont(QFontDatabase::FixedFont));

saber

@VRonin

spacing is not fixed

VRonin

Text browser is just ignoring textBrowser->setCurrentFont(QFontDatabase::systemFont(QFontDatabase::FixedFont));

Let's try this:

QTextCursor textBrowCrsr(ui->tdetail->document());
const int oldPos = textBrowCrsr.position();
textBrowCrsr.movePosition(QTextCursor::End);
QTextCharFormat textBrowFormat = textBrowCrsr.charFormat();
textBrowFormat.setFont(QFontDatabase::systemFont(QFontDatabase::FixedFont));
textBrowCrsr.insertText(output,textBrowFormat);
textBrowCrsr.setPosition(oldPos);

P.S.
That's not a great way of reading from QProcess to QString. It probably blows up as soon as you have any non-ASCII char. Use QTextStream instead

saber

@VRonin said in qtextbrowser text view problem:

QTextStream

i tried it ,but no changes.

please see the cpp file github
i need the fix for my next release .
so please give me a fix.

please show me how to use the QTextStream in that function .

VRonin

The problem in your screenshot is that the last row (setText) overrides everything done above. just remove that row.

how to use the QTextStream

replace QString output(pl.readAllStandardOutput()); with

QTextStream consoleStream(&pl);
const QString output  = consoleStream.readAll();

saber

@VRonin nothing

saber

@VRonin any other solution??

SGaist

Hi,

You should add some checks to verify that the process did indeed run and it was successful.

saber

@SGaist
it run successfully and output is on the side window.

SGaist

The fact that mediainfo runs successfully on the command line doesn't mean that it will necessarily run the way you expect it to with QProcess.

Are you sure the path to the media file you are using is correct ?
Is it a relative or are an absolute path ?
What if you use the recommended structure of calling QProcess::start with the command as first parameter and a QStringList with the options as second parameter ?
Did you actually checked that p1 starts successfully ?
Did you actually checked that p1 ends successfully ?

mrjj

Hi
As for other solution.
Use a QplainTextEdit
alt text

and just sets its font to monospaced
ui->plainTextEdit->setFont( (QFontDatabase::systemFont(QFontDatabase::FixedFont)) );

VRonin

The only thing I can think of with QTextBrowser is that you are using a style sheet with a font that overrides the one we are setting

mrjj

@VRonin
Yep something like that - as your code and test file just works
with output from same command on linux.

Also, i noticed one thing in code shown on GITHUB

QTextCursor textBrowCrsr(ui->tdetail->document());
    const int oldPos = textBrowCrsr.position();
    textBrowCrsr.movePosition(QTextCursor::End);
    QTextCharFormat textBrowFormat = textBrowCrsr.charFormat();
    textBrowFormat.setFont(QFontDatabase::systemFont(QFontDatabase::FixedFont));
    textBrowCrsr.insertText(output,textBrowFormat);
    textBrowCrsr.setPosition(oldPos);


    ui->tdetail->setText(output.toUtf8()); <<<<<<<<<<<<<<<<<< wont that override insertText ?

saber

@mrjj it was a old commit .

mrjj

@saber
ok.
I did make small test on linux and VRonin sample did in fact make
it uses fixed font so it looked correctly.
However, using plainTextEdit is a one liner so might be more optimal if you do not need the HTML textbrowse offer

saber

i do't know how to fix that or what's wrong.
after long works i made an app with mediainfo as backend.
here is the app CoreInfo.
thanks.

Call for Presentations - Qt World Summit

Solved qtextbrowser text view problem