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  1. 29th March 2011, 09:39 #1
    high_flyer
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    Default Re: Overlapping text in QStatusBar

    I see.
    Well, the current behavior is due to the fact that the QStatusBar has a layout inside it.
    But you want it with a fixed minimum (the minimum being the combined length of all the displayed information in it).
    I would therefore try to set a minimum width to the status bar.
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  2. 29th March 2011, 13:34 #2
    anirbanjoy
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    Default Re: Overlapping text in QStatusBar

    Unfortunately does not solve the problem.

    The proposed solution limits the minimum width of the whole application plus I do not see this hiding-of-text-on-resizing-application (as it works on native windows apps).
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  3. 29th March 2011, 13:43 #3
    high_flyer
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    Default Re: Overlapping text in QStatusBar

    Hmm... maybe some one else can help you more.
    I think this is not possible with QStatusBar, without sub classing, and overwriting the layout behavior.
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  4. 31st March 2011, 08:26 #4
    anirbanjoy
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    Default Re: Overlapping text in QStatusBar

    I have some more inputs. It looks like a problem of base class QMainWindow. For the same code, Qt3 and Qt4 behaves in a different manner.

    Qt3:
    - beheaves like native windows apps. QStatusBar::addPermanentWidget really makes the widget permamanent. The user can not resize the main window in a way so that the permanent widgets are hidden.

    qt3.PNG

    Qt4:
    - On resizing certain texts of the supposed-to-permamnent-widget becomes hidden.

    qt4.PNG

    It's not recommneded to go back to Qt3. So, I need to find out how to take care of this issue in Qt4.

    I'm using the portedcanvas Qt example to single out this problem. I added a private method createStatusBar() in canvas.cpp:

    Qt Code: 
    1. void Main::createStatusBar()
    2. {
    3. 	statusLabel = new QLabel(tr("Ready"));
    4. 	gridSpacingLabel = new QLabel(tr(" Grid Spacing:  20"));
    5. 	xPosLabel = new QLabel(tr(" X: 640 "));
    6. 	yPosLabel = new QLabel(tr(" Y: 640 "));
    7. 	widthLabel = new QLabel(tr(" Width: 640 "));
    8. 	heightLabel = new QLabel(tr(" Height: 480 "));
    9. 	unsavedDataLabel = new QLabel();
    10. 	QPixmap pixmap(":changes.png");
    11. 	unsavedDataLabel->setPixmap(pixmap);
    12.  
    13. 	statusBar()->addPermanentWidget(gridSpacingLabel);
    14. 	statusBar()->addPermanentWidget(xPosLabel);
    15. 	statusBar()->addPermanentWidget(yPosLabel);
    16. 	statusBar()->addPermanentWidget(widthLabel);
    17. 	statusBar()->addPermanentWidget(heightLabel);
    18. 	statusBar()->addPermanentWidget(unsavedDataLabel);
    19.  
    20. 	statusBar()->addWidget(statusLabel);
    21. 	statusBar()->showMessage(tr("Showing Message"));
    22. }
    To copy to clipboard, switch view to plain text mode 

    This method is called at the end of constructor. Also note the small code change to switch between Qt3 and Qt4 [ Q"3"MainWindow(parent,name,f) ]

    Qt Code: 
    1. Main::Main(QGraphicsScene& c, QWidget* parent, const char* name, Qt::WindowFlags f) :
    2.     Q3MainWindow(parent,name,f),
    3. 	//QMainWindow(parent,name,f),
    4.     canvas(c)
    5. {
    6.     editor = new FigureEditor(canvas,this);
    7.     QMenuBar* menu = menuBar();
    8.  
    9.     Q3PopupMenu* file = new Q3PopupMenu( menu );
    10.     file->insertItem("&Fill canvas", this, SLOT(init()), Qt::CTRL+Qt::Key_F);
    11.     file->insertItem("&Erase canvas", this, SLOT(clear()), Qt::CTRL+Qt::Key_E);
    12.     file->insertItem("&New view", this, SLOT(newView()), Qt::CTRL+Qt::Key_N);
    13.     file->insertSeparator();
    14.     file->insertItem("&Print...", this, SLOT(print()), Qt::CTRL+Qt::Key_P);
    15.     file->insertSeparator();
    16.     file->insertItem("E&xit", qApp, SLOT(quit()), Qt::CTRL+Qt::Key_Q);
    17.     menu->insertItem("&File", file);
    18.  
    19.     Q3PopupMenu* edit = new Q3PopupMenu( menu );
    20.     edit->insertItem("Add &Circle", this, SLOT(addCircle()), Qt::ALT+Qt::Key_C);
    21.     edit->insertItem("Add &Hexagon", this, SLOT(addHexagon()), Qt::ALT+Qt::Key_H);
    22.     edit->insertItem("Add &Polygon", this, SLOT(addPolygon()), Qt::ALT+Qt::Key_P);
    23.     edit->insertItem("Add Spl&ine", this, SLOT(addSpline()), Qt::ALT+Qt::Key_I);
    24.     edit->insertItem("Add &Text", this, SLOT(addText()), Qt::ALT+Qt::Key_T);
    25.     edit->insertItem("Add &Line", this, SLOT(addLine()), Qt::ALT+Qt::Key_L);
    26.     edit->insertItem("Add &Rectangle", this, SLOT(addRectangle()), Qt::ALT+Qt::Key_R);
    27.     edit->insertItem("Add &Sprite", this, SLOT(addSprite()), Qt::ALT+Qt::Key_S);
    28.     edit->insertItem("Create &Mesh", this, SLOT(addMesh()), Qt::ALT+Qt::Key_M );
    29.     edit->insertItem("Add &Alpha-blended image", this, SLOT(addButterfly()), Qt::ALT+Qt::Key_A);
    30.     menu->insertItem("&Edit", edit);
    31.  
    32.     Q3PopupMenu* view = new Q3PopupMenu( menu );
    33.     view->insertItem("&Enlarge", this, SLOT(enlarge()), Qt::SHIFT+Qt::CTRL+Qt::Key_Plus);
    34.     view->insertItem("Shr&ink", this, SLOT(shrink()), Qt::SHIFT+Qt::CTRL+Qt::Key_Minus);
    35.     view->insertSeparator();
    36.     view->insertItem("&Rotate clockwise", this, SLOT(rotateClockwise()), Qt::CTRL+Qt::Key_PageDown);
    37.     view->insertItem("Rotate &counterclockwise", this, SLOT(rotateCounterClockwise()), Qt::CTRL+Qt::Key_PageUp);
    38.     view->insertItem("&Zoom in", this, SLOT(zoomIn()), Qt::CTRL+Qt::Key_Plus);
    39.     view->insertItem("Zoom &out", this, SLOT(zoomOut()), Qt::CTRL+Qt::Key_Minus);
    40.     view->insertItem("Translate left", this, SLOT(moveL()), Qt::CTRL+Qt::Key_Left);
    41.     view->insertItem("Translate right", this, SLOT(moveR()), Qt::CTRL+Qt::Key_Right);
    42.     view->insertItem("Translate up", this, SLOT(moveU()), Qt::CTRL+Qt::Key_Up);
    43.     view->insertItem("Translate down", this, SLOT(moveD()), Qt::CTRL+Qt::Key_Down);
    44.     view->insertItem("&Mirror", this, SLOT(mirror()), Qt::CTRL+Qt::Key_Home);
    45.     menu->insertItem("&View", view);
    46.  
    47.     menu->insertSeparator();
    48.  
    49.     Q3PopupMenu* help = new Q3PopupMenu( menu );
    50.     help->insertItem("&About", this, SLOT(help()), Qt::Key_F1);
    51.     help->setItemChecked(dbf_id, TRUE);
    52.     menu->insertItem("&Help",help);
    53.  
    54.     createStatusBar();
    55.  
    56.     setCentralWidget(editor);
    57.  
    58.     printer = 0;
    59.  
    60.     init();
    61. }
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    Anyone else? any other idea?

    Regards,
    Anirban
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