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How to make files preview like in native file manager?

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  • SGaistS Offline
    SGaistS Offline
    SGaist
    Lifetime Qt Champion
    wrote on last edited by SGaist
    #2

    Hi and welcome to devnet,

    A starting point would be:

    • QListView
    • QFileSystemModel
    • QFileIconProvider

    And maybe:

    • QStyledItemDelegate

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    T 1 Reply Last reply
    4
    • SGaistS SGaist

      Hi and welcome to devnet,

      A starting point would be:

      • QListView
      • QFileSystemModel
      • QFileIconProvider

      And maybe:

      • QStyledItemDelegate
      T Offline
      T Offline
      Tundra
      wrote on last edited by
      #3

      @SGaist , thank you for answer!
      I found that QFileIconProvider can to provide small icons (it provides them for QDirModel and the QFileSystemModel classes).
      How to get Large ones with thumbnails and etc - I didn't find yet :)

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      • SGaistS Offline
        SGaistS Offline
        SGaist
        Lifetime Qt Champion
        wrote on last edited by
        #4

        What makes you think you can't return bigger icons ?

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        2
        • SGaistS SGaist

          What makes you think you can't return bigger icons ?

          T Offline
          T Offline
          Tundra
          wrote on last edited by Tundra
          #5

          @SGaist I'm trying to find a way to get not just bigger ones, but "Large icons" in Windows Explorer terminology which are thumbnails for videos and images and icons for other files :)
          I tried QFileIconProvider ::icon() ─ it returns a small icon assotiated for file's extension.
          Maybe I do something wrong...

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          • SGaistS Offline
            SGaistS Offline
            SGaist
            Lifetime Qt Champion
            wrote on last edited by
            #6

            Can you show the code you are using ?

            On a side note, QStyledItemDelegate gives you more freedom to paint what you want to get in your view.

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            • SGaistS SGaist

              Can you show the code you are using ?

              On a side note, QStyledItemDelegate gives you more freedom to paint what you want to get in your view.

              T Offline
              T Offline
              Tundra
              wrote on last edited by Tundra
              #7

              @SGaist , I tested it by this code (node.originalPath is file path in QString):

              QList<QTreeWidgetItem *> items;
              QTreeWidgetItem *item = new QTreeWidgetItem((QTreeWidget*)0, QStringList(node.originalPath));
              QFileIconProvider provider;
              item->setIcon(0, QIcon(provider.icon(node.originalPath)));
              items.append(item);
              treeWidget->insertTopLevelItems(0, items);
              

              @SGaist said in How to make files preview like in native file manager?:

              On a side note, QStyledItemDelegate gives you more freedom to paint what you want to get in your view.

              Doesn't it mean that I should to render thumbnails by my own code for any new file format? It seems too expensive. I was hoping to get icons which are already generated by Windows Explorer (even for odt, pdf, mp4 etc, not only popular images) :).

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              • Christian EhrlicherC Offline
                Christian EhrlicherC Offline
                Christian Ehrlicher
                Lifetime Qt Champion
                wrote on last edited by
                #8

                QFileIconProvider only returns you the default icons according to the extension. Anything else you have to write on your own.

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                • Christian EhrlicherC Christian Ehrlicher

                  QFileIconProvider only returns you the default icons according to the extension. Anything else you have to write on your own.

                  T Offline
                  T Offline
                  Tundra
                  wrote on last edited by Tundra
                  #9

                  @Christian-Ehrlicher Thank you for answer =) Does QFileDialog just call native Windows dialog (It shows thumbnails pretty nice)?

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                  • T Offline
                    T Offline
                    Tundra
                    wrote on last edited by Tundra
                    #10

                    Thank you all!
                    Problem is resolved!
                    I used this: http://www.cplusplus.com/forum/windows/100661/

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                    • T Tundra

                      Thank you all!
                      Problem is resolved!
                      I used this: http://www.cplusplus.com/forum/windows/100661/

                      T Offline
                      T Offline
                      Tundra
                      wrote on last edited by
                      #11

                      Upd: Be careful ─ code in http://www.cplusplus.com/forum/windows/100661/ conteins an error. There should be resource releasing:

                      pIExtract->Release();
                      
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                      • R Offline
                        R Offline
                        RobertZamors56
                        Banned
                        wrote on last edited by
                        #12
                        This post is deleted!
                        1 Reply Last reply
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