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Working with several QDockWidgets

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  • G Offline
    G Offline
    genjix
    wrote on last edited by
    #9

    Yeah I don't mean when the dock widget can be seen, but I mean when the dock widget is the selected one on top in a set of tabs.

    I wrote this "small example (click here":http://www.qtcentre.org/attachment.php?attachmentid=5397&d=1288020905 - run qmake/make) to show what I mean. Just click show/hide button and notice your currently selected tab position. Is this a Qt bug?

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    • F Offline
      F Offline
      Franzk
      wrote on last edited by
      #10

      Interesting... It seems to be switching to the previously selected widget. Can't say if it's a bug though. I'd need to check a bit more. You could do a search through the bug tracker though.

      "Horse sense is the thing a horse has which keeps it from betting on people." -- W.C. Fields

      http://www.catb.org/~esr/faqs/smart-questions.html

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      • G Offline
        G Offline
        genjix
        wrote on last edited by
        #11

        "This":http://bugreports.qt.nokia.com/browse/QTBUG-3420 is the closest bug I could find. Seems QDockWidgets are rather sparse in their api so far :) No way to see who's on top, get the tab orderings, find the layout of several dock widgets in the same area :)

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        • G Offline
          G Offline
          genjix
          wrote on last edited by
          #12

          I found the answer:
          "http://developer.qt.nokia.com/faq/answer/how_can_i_check_which_tab_is_the_current_one_in_a_tabbed_qdockwidget":http://developer.qt.nokia.com/faq/answer/how_can_i_check_which_tab_is_the_current_one_in_a_tabbed_qdockwidget

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          • G Offline
            G Offline
            genjix
            wrote on last edited by
            #13

            How can I see if a QDockWidget belongs to a particular tab bar?
            EDIT: this "http://doc.trolltech.com/4.7/qtabwidget.html":http://doc.trolltech.com/4.7/qtabwidget.html
            (see indexOf(widget))

            EDIT2: Or not. Spoke too soon!!! QDockWidgets use QTabBar but they don't use QTabWidget! So how am I meant to see which QDockWidget belongs to which QTabBar so I can restore the state? Very frustrating :(

            Here is my saving code (saving tab positions)
            @ tabWidgetsAll = self.parent().findChildren(QTabWidget, None)
            # tab widgets which contain QDockWidget
            tabWidgets = []
            if len(tabWidgets) > 0:
            print 'yay'
            for w in widgets:
            for tab in tabWidgetsAll:
            if tab in tabWidgets:
            continue
            if tab.indexOf(w) != -1:
            tabWidgets.append(tab)
            for tab in tabWidgets:
            self.activeTabs.append((tab, tab.currentIndex()))@

            In that snippet 'yay' is never printed, indicating that no QTabWidget's exist and that QDockWidget doesn't use that for tabifying itself.

            And here is the restoration code:
            @ for tab in self.activeTabs:
            tab[0].setCurrentIndex(tab[1])
            self.activeTabs = []@

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            • G Offline
              G Offline
              genjix
              wrote on last edited by
              #14

              any ideas?

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              • G Offline
                G Offline
                genjix
                wrote on last edited by
                #15

                Can Qt add a QMainWindow::setDockAreaVisible(Qt::DockWidgetArea area, bool visible) to their API?

                Looking at:

                http://qt.gitorious.org/qt/qt/blobs/4.7/src/gui/widgets/qdockarealayout_p.h

                It looks like a trivial change:
                add to

                @
                class QDockAreaLayout
                {
                QDockAreaLayoutInfo hiddenDocks[4]; // hidden dock windows
                bool dockHidden[4]; // initialise to false, false, false, false on initialiser
                };
                QDockAreaLayout::setVisible(QInternal::DockPosition pos, bool visible)

                if (!visible) {
                // copy
                hiddenDocks[pos] = docks[pos];
                dockHidden[pos] = true;
                // clear the dock widget area
                docks[pos].clear();
                } else {
                docks[pos] = hiddenDocks[pos];
                }
                @

                And add to QMainWindow::setVisible(area, bool) which does:
                layoutState.dockAreaLayout.setVisible(toDockPos(area), bool);
                invalidate();

                Hiding/showing a sidepanel is such a common use-case :) This is a really needed feature.

                I made a "bug report here":http://bugreports.qt.nokia.com/browse/QTBUG-14725

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                • F Offline
                  F Offline
                  Franzk
                  wrote on last edited by
                  #16

                  Maybe it's time to (do a feature request|develop it yourself and do a merge request) for that. I'm not sure these suggestions will be picked up from devnet.

                  "Horse sense is the thing a horse has which keeps it from betting on people." -- W.C. Fields

                  http://www.catb.org/~esr/faqs/smart-questions.html

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                  • G Offline
                    G Offline
                    genjix
                    wrote on last edited by
                    #17

                    Right, but I don't want to waste time building my own Qt, adding that function to the API to have it rejected. Where can I ask whether it would be accepted if the code worked nicely?

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                    • M Offline
                      M Offline
                      mgran
                      wrote on last edited by
                      #18

                      [quote author="genjix" date="1288186847"]Where can I ask whether it would be accepted if the code worked nicely?[/quote]

                      Could start with a feature request at "http://bugreports.qt.nokia.com":http://bugreports.qt.nokia.com. Or find the developers on the #qt-labs IRC channel on irc.freenode.net for a chat.

                      Project Manager - Qt Development Frameworks

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