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How to create in QT main chat windows like this?

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  • Q qwe3

    @mrjj Next small problem :)

    I have now ( in the picture is small error - the third row have smaller rectangle ( whre is text "somethingABC ") - I change it in paint application; this rectangle have width like the others )

    example4.png

    My delegate:

    path.addRoundedRect(QRectF(option.rect), 10, 10);
    

    When I change it to:

    path.addRoundedRect(QRectF(option.rect.x(), option.rect.y(),option.rect.width()/2,option.rect.height()), 10, 10);
    

    I get:
    example5.png

    There are 3 columns in QTableView:
    the first one for my messages
    the second one - seperator
    the third for other person's messages

    I would like to align to right the third column - yellow rectangles. Like this:
    example6.png

    With the text there is not a problem:

    painter->drawText(QRect(option.rect),Qt::AlignVCenter, index.data().toString());
    

    But function

    painter->drawPath(path);
    

    doesn't have a parameter with alignments

    mrjjM Offline
    mrjjM Offline
    mrjj
    Lifetime Qt Champion
    wrote on last edited by
    #22

    @qwe3
    Hi
    Only drawText uses align. Not other paint functions as far as i know :0

    Since option.rect IS the cell, i think you just need to set
    ui->table->horizontalHeader()->setStretchLastSection(true);

    so the last col is actually to the far right

    1 Reply Last reply
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    • Q Offline
      Q Offline
      qwe3
      wrote on last edited by qwe3
      #23

      @mrjj Thank you, I think I can use something like:

      path.addRoundedRect(QRectF(option.rect.x()+100, option.rect.y(),option.rect.width()/2,option.rect.height()), 10, 10);
      

      for the last column.

      But there is next problem :D

      When I use:

      table->verticalHeader()->setSectionResizeMode(QHeaderView::ResizeToContents);
      

      I get the perfect height for cell (0,0). Perfect. But cell (0,1) must has the same height like cell (0,0), so it can be too big for cell (0,1).

      mrjjM 1 Reply Last reply
      0
      • Q qwe3

        @mrjj Thank you, I think I can use something like:

        path.addRoundedRect(QRectF(option.rect.x()+100, option.rect.y(),option.rect.width()/2,option.rect.height()), 10, 10);
        

        for the last column.

        But there is next problem :D

        When I use:

        table->verticalHeader()->setSectionResizeMode(QHeaderView::ResizeToContents);
        

        I get the perfect height for cell (0,0). Perfect. But cell (0,1) must has the same height like cell (0,0), so it can be too big for cell (0,1).

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

        @qwe3
        Hi

        • I get the perfect height for cell (0,0). Perfect. But cell (0,1) must has the same height like cell (0,0), so it can be too big for cell (0,1).

        Im not really sure what you say here :)

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        • Q Offline
          Q Offline
          qwe3
          wrote on last edited by
          #25

          example6.png
          Please look at first row. In cell (0,0) there is text "somethingABC\ntext\njdsa". In cell ( 0,2 ) there is text "so". When I use

          table->verticalHeader()->setSectionResizeMode(QHeaderView::ResizeToContents);
          

          QT resize height of the first row to height which cell (0,0 ) needs. But cell (0,2) must have the same height. In cell (0,2) there is only text "so" , so it can have smaller height.

          mrjjM 1 Reply Last reply
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          • Q qwe3

            example6.png
            Please look at first row. In cell (0,0) there is text "somethingABC\ntext\njdsa". In cell ( 0,2 ) there is text "so". When I use

            table->verticalHeader()->setSectionResizeMode(QHeaderView::ResizeToContents);
            

            QT resize height of the first row to height which cell (0,0 ) needs. But cell (0,2) must have the same height. In cell (0,2) there is only text "so" , so it can have smaller height.

            mrjjM Offline
            mrjjM Offline
            mrjj
            Lifetime Qt Champion
            wrote on last edited by mrjj
            #26

            Hi
            But that is what ResizeToContents does ?
            So if it has lesser text, it will be smaller.

            Do you want all to have same size regardless of text ?

            ahh you mean the "so" should be smaller ?

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            • Q Offline
              Q Offline
              qwe3
              wrote on last edited by qwe3
              #27

              @mrjj
              I would like something like that:

              example7.png

              mrjjM 1 Reply Last reply
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              • Q qwe3

                @mrjj
                I would like something like that:

                example7.png

                mrjjM Offline
                mrjjM Offline
                mrjj
                Lifetime Qt Champion
                wrote on last edited by
                #28

                @qwe3
                Hi
                I think that will be hard as one row can only have one height.
                https://doc.qt.io/archives/qt-4.8/qtableview.html#setRowHeight
                but you can span cells to give them uneven sizes
                void QTableView::setSpan(int row, int column, int rowSpanCount, int columnSpanCount)

                But im wondering if it would not be easier to just use a QListView ( you can reuse delegate)
                and have 2 of them .
                one in each side and then just some white Qwidget in between ?

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                • Q Offline
                  Q Offline
                  qwe3
                  wrote on last edited by
                  #29

                  @mrjj I never used QListView. I don't need to use QTableView. But when I add 2 QListView there are two sliders to move? I would like to have only one like in QTableView ( on the right )

                  mrjjM 1 Reply Last reply
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                  • Q qwe3

                    @mrjj I never used QListView. I don't need to use QTableView. But when I add 2 QListView there are two sliders to move? I would like to have only one like in QTableView ( on the right )

                    mrjjM Offline
                    mrjjM Offline
                    mrjj
                    Lifetime Qt Champion
                    wrote on last edited by mrjj
                    #30

                    @qwe3
                    Its just like TableView but just having one column.

                    Then each row can be any height you wish pr item/shape and same for the right one.

                    Else i think it get complicated to do with one tableView.
                    You would have to make one row as hight as the biggest shape or merge cells to allow it to be uneven.
                    Not easy in my book to calc that.
                    But your call.

                    Well its not so hard to make both scroll at same time

                    connect(view1->horizontalScrollBar(), SIGNAL(valueChanged(int)), view2->horizontalScrollBar(), SLOT(setValue(int)));
                    connect(view2->horizontalScrollBar(), SIGNAL(valueChanged(int)), view1->horizontalScrollBar(), SLOT(setValue(int)));
                    

                    and ofc you can just hide one of them if you wish

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                    • Q Offline
                      Q Offline
                      qwe3
                      wrote on last edited by
                      #31

                      @mrjj Hello,

                      Could you tell me how will you do this GUI? Using QTableView, QListView or something other? At the moment please forget about 3 columns. Change it to only one column. In telegram application I see only one column for all people ( maybe two - the first one is for avatar in circle ). Do you know how it is done in telegram application? You told me that application has delegate. And it's using QListView too? What about the size of circle where is the text? How it is implemented that we have circle with text in other sizes?

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