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qtextbrowser text view problem

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  • VRoninV 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

    S Offline
    S Offline
    saber
    wrote on last edited by
    #5

    @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.

    0_1525426582991_f.png

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

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    • VRoninV Offline
      VRoninV Offline
      VRonin
      wrote on last edited by
      #6

      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();
      

      "La mort n'est rien, mais vivre vaincu et sans gloire, c'est mourir tous les jours"
      ~Napoleon Bonaparte

      On a crusade to banish setIndexWidget() from the holy land of Qt

      S 2 Replies Last reply
      2
      • VRoninV 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();
        
        S Offline
        S Offline
        saber
        wrote on last edited by
        #7

        @VRonin nothing
        0_1525496871078_i.png

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        • VRoninV 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();
          
          S Offline
          S Offline
          saber
          wrote on last edited by
          #8

          @VRonin any other solution??

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          • SGaistS Offline
            SGaistS Offline
            SGaist
            Lifetime Qt Champion
            wrote on last edited by
            #9

            Hi,

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

            Interested in AI ? www.idiap.ch
            Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

            S 1 Reply Last reply
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            • SGaistS SGaist

              Hi,

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

              S Offline
              S Offline
              saber
              wrote on last edited by
              #10

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

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              • SGaistS Offline
                SGaistS Offline
                SGaist
                Lifetime Qt Champion
                wrote on last edited by
                #11

                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 ?

                Interested in AI ? www.idiap.ch
                Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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                • mrjjM Offline
                  mrjjM Offline
                  mrjj
                  Lifetime Qt Champion
                  wrote on last edited by
                  #12

                  Hi
                  As for other solution.
                  Use a QplainTextEdit
                  alt text

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

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                  • VRoninV Offline
                    VRoninV Offline
                    VRonin
                    wrote on last edited by
                    #13

                    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

                    "La mort n'est rien, mais vivre vaincu et sans gloire, c'est mourir tous les jours"
                    ~Napoleon Bonaparte

                    On a crusade to banish setIndexWidget() from the holy land of Qt

                    mrjjM 1 Reply Last reply
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                    • VRoninV 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

                      mrjjM Offline
                      mrjjM Offline
                      mrjj
                      Lifetime Qt Champion
                      wrote on last edited by mrjj
                      #14

                      @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 ?
                      
                      S 1 Reply Last reply
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                      • mrjjM 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 ?
                        
                        S Offline
                        S Offline
                        saber
                        wrote on last edited by
                        #15

                        @mrjj it was a old commit .

                        mrjjM 1 Reply Last reply
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                        • S saber

                          @mrjj it was a old commit .

                          mrjjM Offline
                          mrjjM Offline
                          mrjj
                          Lifetime Qt Champion
                          wrote on last edited by
                          #16

                          @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

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                          • S Offline
                            S Offline
                            saber
                            wrote on last edited by
                            #17

                            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.

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