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Make a line break in a layout or container

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  • E Offline
    E Offline
    EL-jos
    wrote on last edited by
    #12

    @mrjj said in Make a line break in a layout or container:

    Hi
    You can insert images via the supported subset of html.
    Oh, SGaist beat me to it. It will fast become slow, however if u have long
    conversations.

    Thank you for the answer,
    can you give me an example so I can do a simple simulation?

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    • SGaistS Offline
      SGaistS Offline
      SGaist
      Lifetime Qt Champion
      wrote on last edited by
      #13

      Are you already familiar with Qt's model view programming ?

      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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      • E Offline
        E Offline
        EL-jos
        wrote on last edited by
        #14

        @mrjj said in Make a line break in a layout or container:

        You mean test of Qlabels ?

        no the test with a QTextEdit and an HTML subset to display an image as in the conversation given as an example above

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        • E Offline
          E Offline
          EL-jos
          wrote on last edited by
          #15

          @SGaist said in Make a line break in a layout or container:

          Are you already familiar with Qt's model view programming ?

          not just the basics too much

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          • SGaistS Offline
            SGaistS Offline
            SGaist
            Lifetime Qt Champion
            wrote on last edited by VRonin
            #16

            Then you should also take a look at @VRonin and @kshegunov's chat example project.

            [VRonin edited to proper attribute credit]

            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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            • E Offline
              E Offline
              EL-jos
              wrote on last edited by
              #17

              @SGaist said in Make a line break in a layout or container:

              Then you should also take a look at @VRonin's chat example project.

              All right, I'll take a look later, since @mrjj is offering me a rather simple solution.

              mrjjM 1 Reply Last reply
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              • E EL-jos

                @SGaist said in Make a line break in a layout or container:

                Then you should also take a look at @VRonin's chat example project.

                All right, I'll take a look later, since @mrjj is offering me a rather simple solution.

                mrjjM Offline
                mrjjM Offline
                mrjj
                Lifetime Qt Champion
                wrote on last edited by mrjj
                #18

                @EL-jos
                sorry but its not a good solution for a chat app :)
                Delegate would be much better. I was too quick to suggest QLabel/TextEdit.
                It will not scroll nice, very fast.

                Anyway, you can have images in Qlabel
                alt text

                 label->setText("<html><head/><body><p>thi is the text that says heeelo hello</p><p><img src=\":/test.jpg\"/>and more hello</p></body></html>");
                

                Notice the syntax for the image
                ":/test.jpg"
                its in a resource file.

                There is an editor if you right click the QLabel on the form.
                alt text

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                • E Offline
                  E Offline
                  EL-jos
                  wrote on last edited by
                  #19

                  Okay, thank you very much for your example.
                  but why do you say a Delegate is much better?
                  what are the advantages of the Delegate?
                  and what are the disadvantages of rich text with HTML image?

                  mrjjM 1 Reply Last reply
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                  • E EL-jos

                    Okay, thank you very much for your example.
                    but why do you say a Delegate is much better?
                    what are the advantages of the Delegate?
                    and what are the disadvantages of rich text with HTML image?

                    mrjjM Offline
                    mrjjM Offline
                    mrjj
                    Lifetime Qt Champion
                    wrote on last edited by
                    #20

                    @EL-jos
                    A Delegate is a custem draw for a ListView ( or any view)
                    So instead of drawing the normal cell, you make a small class where you use
                    QPainter to draw the cell how you want it.
                    Its much faster than having a tons of QLabels in a layout as
                    Views has been optimized for having many items.

                    so the clear benefit is that it works very fast and it can draw however you like.
                    (well you have to program that part)

                    Using html , you would have to construct the right html to have it look how u want.
                    Some thing be much harder. Like the clock/time in the whatapps sample.

                    With Delegate you can simply paint it there.

                    However, learning to use Views and Delegates will take some practice.

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                    • E Offline
                      E Offline
                      EL-jos
                      wrote on last edited by
                      #21

                      @mrjj said in Make a line break in a layout or container:

                      A Delegate is a custem draw for a ListView ( or any view)
                      So instead of drawing the normal cell, you make a small class where you use
                      QPainter to draw the cell how you want it.
                      Its much faster than having a tons of QLabels in a layout as
                      Views has been optimized for having many items.
                      so the clear benefit is that it works very fast and it can draw however you like.
                      (well you have to program that part)
                      Using html , you would have to construct the right html to have it look how u want.
                      Some thing be much harder. Like the clock/time in the whatapps sample.
                      With Delegate you can simply paint it there.
                      However, learning to use Views and Delegates will take some practice.

                      Thank you very much for the answer.
                      but can you give me a training link on the view and the delegate?

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                      • SGaistS Offline
                        SGaistS Offline
                        SGaist
                        Lifetime Qt Champion
                        wrote on last edited by
                        #22

                        Did you took a look at the documentation I linked to earlier ? It does explain everything with examples.

                        There's the model view tutorial and the Item Views examples.

                        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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                        • E Offline
                          E Offline
                          EL-jos
                          wrote on last edited by
                          #23

                          @SGaist said in Make a line break in a layout or container:

                          Did you took a look at the documentation I linked to earlier ? It does explain everything with examples.

                          Yeah, but it's a little complicated for me.

                          mrjjM 1 Reply Last reply
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                          • E EL-jos

                            @SGaist said in Make a line break in a layout or container:

                            Did you took a look at the documentation I linked to earlier ? It does explain everything with examples.

                            Yeah, but it's a little complicated for me.

                            mrjjM Offline
                            mrjjM Offline
                            mrjj
                            Lifetime Qt Champion
                            wrote on last edited by
                            #24

                            @EL-jos
                            Hi
                            maybe this is easier to follow ?
                            https://www.bogotobogo.com/Qt/Qt5_QListView_QStringListModel_ModelView_MVC.php

                            Try to follow the steps and build the same.
                            It looks more complicated than it is.

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                            • E Offline
                              E Offline
                              EL-jos
                              wrote on last edited by
                              #25

                              @mrjj said in Make a line break in a layout or container:

                              Try to follow the steps and build the same.
                              It looks more complicated than it is.
                              All right, I'll take your advice, anyway, thank you for your answers and I can put the subject as resolved.

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