Skip to content
  • Categories
  • Recent
  • Tags
  • Popular
  • Users
  • Groups
  • Search
  • Get Qt Extensions
  • Unsolved
Collapse
Brand Logo
  1. Home
  2. Qt Development
  3. General and Desktop
  4. qtextbrowser text view problem

qtextbrowser text view problem

Scheduled Pinned Locked Moved Solved General and Desktop
17 Posts 4 Posters 3.4k Views
  • Oldest to Newest
  • Newest to Oldest
  • Most Votes
Reply
  • Reply as topic
Log in to reply
This topic has been deleted. Only users with topic management privileges can see it.
  • S Offline
    S Offline
    saber
    wrote on last edited by saber
    #1

    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.

    0_1525175264437_uy.png

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

    1 Reply Last reply
    0
    • VRoninV Offline
      VRoninV Offline
      VRonin
      wrote on last edited by
      #2

      before writing anything in it, you can use

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

      "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 1 Reply Last reply
      5
      • VRoninV VRonin

        before writing anything in it, you can use

        textBrowser->setLineWrapMode(QTextEdit::NoWrap);
        textBrowser->setCurrentFont(QFontDatabase::systemFont(QFontDatabase::FixedFont));
        
        S Offline
        S Offline
        saber
        wrote on last edited by
        #3

        @VRonin
        0_1525252457628_a1.png

        spacing is not fixed

        1 Reply Last reply
        0
        • VRoninV Offline
          VRoninV Offline
          VRonin
          wrote on last edited by VRonin
          #4

          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

          "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 1 Reply Last reply
          3
          • 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 .

            1 Reply Last reply
            0
            • 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

                1 Reply Last reply
                0
                • 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??

                  1 Reply Last reply
                  0
                  • 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
                    0
                    • 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.

                      1 Reply Last reply
                      0
                      • 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

                        1 Reply Last reply
                        1
                        • 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)) );

                          1 Reply Last reply
                          2
                          • 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
                            2
                            • 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
                              2
                              • 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
                                0
                                • 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

                                  1 Reply Last reply
                                  1
                                  • 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.

                                    1 Reply Last reply
                                    0

                                    • Login

                                    • Login or register to search.
                                    • First post
                                      Last post
                                    0
                                    • Categories
                                    • Recent
                                    • Tags
                                    • Popular
                                    • Users
                                    • Groups
                                    • Search
                                    • Get Qt Extensions
                                    • Unsolved