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Retrieve current font from model

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  • M Offline
    M Offline
    Mark81
    wrote on last edited by
    #1

    In my model I want to change the font in some particular cells, hence I'm going to use the Qt::FontRole:

    QVariant MyModel::data(const QModelIndex &index, int role) const
    {
        if (!index.isValid()) return QVariant();
        if (index.row() >= _items.count()) return QVariant();
    
        item_t item = _items.at(index.row());
    
        switch (role)
        {
        case Qt::FontRole: {
            auto font = ???->font();  // how to retrieve the current font?
            font.setBold(true);
            return font; }
        }
        // ...
    }
    

    But I'm not able to retrieve the current font to change it. Of course I can create a new one, but it would break any other settings...

    J.HilkJ 1 Reply Last reply
    0
    • M Mark81

      In my model I want to change the font in some particular cells, hence I'm going to use the Qt::FontRole:

      QVariant MyModel::data(const QModelIndex &index, int role) const
      {
          if (!index.isValid()) return QVariant();
          if (index.row() >= _items.count()) return QVariant();
      
          item_t item = _items.at(index.row());
      
          switch (role)
          {
          case Qt::FontRole: {
              auto font = ???->font();  // how to retrieve the current font?
              font.setBold(true);
              return font; }
          }
          // ...
      }
      

      But I'm not able to retrieve the current font to change it. Of course I can create a new one, but it would break any other settings...

      J.HilkJ Offline
      J.HilkJ Offline
      J.Hilk
      Moderators
      wrote on last edited by
      #2

      @Mark81 I don't think this is how this works, The View will request the font it's going to use via FontRole. If you donÄt specify a Font than the default one QFont f will be used. You''have to decide inside the data function when to set it ti bold and when not.


      Be aware of the Qt Code of Conduct, when posting : https://forum.qt.io/topic/113070/qt-code-of-conduct


      Q: What's that?
      A: It's blue light.
      Q: What does it do?
      A: It turns blue.

      1 Reply Last reply
      1
      • M Offline
        M Offline
        Mark81
        wrote on last edited by
        #3

        @J-Hilk Got it. I didn't know that declaring QFont font; was enough to set it as the current font of the view!

        1 Reply Last reply
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