Overlapping text in QStatusBar

[anirbanjoy]

Hi,

I have an applciation with a simple status bar.

6163

The issue is whenever I resize the main window, the texts in the status bar are overlapping with each other.

6164

I want them to be a nicely cropped like any native windows application (e.g. Windows Word). Any idea on how to achieve that?

Following code shows how I initialize the text in this status bar.



void SSDMainWindow::createStatusBar()
{
statusLabel = new QLabel(tr("Ready"));
statusLabel->setIndent(3);
statusBar()->addWidget(statusLabel);

gridSpacingLabel = new QLabel(tr(" Grid Spacing: "));
gridSpacingLabel->setAlignment(Qt::AlignLeft | Qt::AlignVCenter);
gridSpacingLabel->setMinimumSize(gridSpacingLabel->sizeHint());
statusBar()->addPermanentWidget(gridSpacingLabel);
//statusBar()->addWidget(gridSpacingLabel);
gridSpacingLabel->setText(tr(" Grid Spacing:"));

xPosLabel = new QLabel(tr(" X: 640 "));
xPosLabel->setAlignment(Qt::AlignLeft | Qt::AlignVCenter);
xPosLabel->setMinimumSize(xPosLabel->sizeHint());
statusBar()->addPermanentWidget(xPosLabel);
// statusBar()->addWidget(xPosLabel);
xPosLabel->setText(tr(" X:"));

yPosLabel = new QLabel(tr(" Y: 480 "));
yPosLabel->setAlignment(Qt::AlignLeft | Qt::AlignVCenter);
yPosLabel->setMinimumSize(yPosLabel->sizeHint());
statusBar()->addPermanentWidget(yPosLabel);
// statusBar()->addWidget(yPosLabel);
yPosLabel->setText(tr(" Y:"));

widthLabel = new QLabel(tr(" Width: 640 "));
widthLabel->setAlignment(Qt::AlignLeft | Qt::AlignVCenter);
widthLabel->setMinimumSize(widthLabel->sizeHint());
statusBar()->addPermanentWidget(widthLabel);
// statusBar()->addWidget(widthLabel);
widthLabel->setText(tr(" Width:"));

heightLabel = new QLabel(tr(" Height: 480 "));
heightLabel->setAlignment(Qt::AlignLeft | Qt::AlignVCenter);
heightLabel->setMinimumSize(heightLabel->sizeHint());
statusBar()->addPermanentWidget(heightLabel);
// statusBar()->addWidget(heightLabel);
heightLabel->setText(tr(" Height:"));

unsavedDataLabel = new QLabel();
QPixmap pixmap(":changes.png");
unsavedDataLabel->setPixmap(pixmap);
unsavedDataLabel->setMinimumSize(unsavedDataLabel->sizeHint());
statusBar()->addPermanentWidget(unsavedDataLabel);
// statusBar()->addWidget(unsavedDataLabel);
unsavedDataLabel->clear();

if (statusBarManager) {
statusBarManager->connectUnsavedData(this, SLOT(unsavedData(bool)));
statusBarManager->connectPositionChanged(this, SLOT(positionChanged(qreal, qreal)));
statusBarManager->connectSizeChanged(this, SLOT(sizeChanged(qreal, qreal)));
statusBarManager->connectGridSpacingChanged(this, SLOT(gridSpacingChanged(int)));
}
}


Regards,
Anirban

[high_flyer]

Then you have to avoid setting minimumSize on the labels.

[anirbanjoy]

Thanks high_flyer,

That removed the overlapping. But still the texts are getting cramped into each other.

6168

I want the QLabels to maintain their width, and, if resized, they should go out of sight. Like it happens in MS Word or any other native MS app.

Regards,
Anirban

[high_flyer]

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.

[anirbanjoy]

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).

[high_flyer]

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.

[anirbanjoy]

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.

6176

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

6177

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:


void Main::createStatusBar()
{
statusLabel = new QLabel(tr("Ready"));
gridSpacingLabel = new QLabel(tr(" Grid Spacing: 20"));
xPosLabel = new QLabel(tr(" X: 640 "));
yPosLabel = new QLabel(tr(" Y: 640 "));
widthLabel = new QLabel(tr(" Width: 640 "));
heightLabel = new QLabel(tr(" Height: 480 "));
unsavedDataLabel = new QLabel();
QPixmap pixmap(":changes.png");
unsavedDataLabel->setPixmap(pixmap);

statusBar()->addPermanentWidget(gridSpacingLabel);
statusBar()->addPermanentWidget(xPosLabel);
statusBar()->addPermanentWidget(yPosLabel);
statusBar()->addPermanentWidget(widthLabel);
statusBar()->addPermanentWidget(heightLabel);
statusBar()->addPermanentWidget(unsavedDataLabel);

statusBar()->addWidget(statusLabel);
statusBar()->showMessage(tr("Showing Message"));
}

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) ]



Main::Main(QGraphicsScene& c, QWidget* parent, const char* name, Qt::WindowFlags f) :
Q3MainWindow(parent,name,f),
//QMainWindow(parent,name,f),
canvas(c)
{
editor = new FigureEditor(canvas,this);
QMenuBar* menu = menuBar();

Q3PopupMenu* file = new Q3PopupMenu( menu );
file->insertItem("&Fill canvas", this, SLOT(init()), Qt::CTRL+Qt::Key_F);
file->insertItem("&Erase canvas", this, SLOT(clear()), Qt::CTRL+Qt::Key_E);
file->insertItem("&New view", this, SLOT(newView()), Qt::CTRL+Qt::Key_N);
file->insertSeparator();
file->insertItem("&Print...", this, SLOT(print()), Qt::CTRL+Qt::Key_P);
file->insertSeparator();
file->insertItem("E&xit", qApp, SLOT(quit()), Qt::CTRL+Qt::Key_Q);
menu->insertItem("&File", file);

Q3PopupMenu* edit = new Q3PopupMenu( menu );
edit->insertItem("Add &Circle", this, SLOT(addCircle()), Qt::ALT+Qt::Key_C);
edit->insertItem("Add &Hexagon", this, SLOT(addHexagon()), Qt::ALT+Qt::Key_H);
edit->insertItem("Add &Polygon", this, SLOT(addPolygon()), Qt::ALT+Qt::Key_P);
edit->insertItem("Add Spl&ine", this, SLOT(addSpline()), Qt::ALT+Qt::Key_I);
edit->insertItem("Add &Text", this, SLOT(addText()), Qt::ALT+Qt::Key_T);
edit->insertItem("Add &Line", this, SLOT(addLine()), Qt::ALT+Qt::Key_L);
edit->insertItem("Add &Rectangle", this, SLOT(addRectangle()), Qt::ALT+Qt::Key_R);
edit->insertItem("Add &Sprite", this, SLOT(addSprite()), Qt::ALT+Qt::Key_S);
edit->insertItem("Create &Mesh", this, SLOT(addMesh()), Qt::ALT+Qt::Key_M );
edit->insertItem("Add &Alpha-blended image", this, SLOT(addButterfly()), Qt::ALT+Qt::Key_A);
menu->insertItem("&Edit", edit);

Q3PopupMenu* view = new Q3PopupMenu( menu );
view->insertItem("&Enlarge", this, SLOT(enlarge()), Qt::SHIFT+Qt::CTRL+Qt::Key_Plus);
view->insertItem("Shr&ink", this, SLOT(shrink()), Qt::SHIFT+Qt::CTRL+Qt::Key_Minus);
view->insertSeparator();
view->insertItem("&Rotate clockwise", this, SLOT(rotateClockwise()), Qt::CTRL+Qt::Key_PageDown);
view->insertItem("Rotate &counterclockwise", this, SLOT(rotateCounterClockwise()), Qt::CTRL+Qt::Key_PageUp);
view->insertItem("&Zoom in", this, SLOT(zoomIn()), Qt::CTRL+Qt::Key_Plus);
view->insertItem("Zoom &out", this, SLOT(zoomOut()), Qt::CTRL+Qt::Key_Minus);
view->insertItem("Translate left", this, SLOT(moveL()), Qt::CTRL+Qt::Key_Left);
view->insertItem("Translate right", this, SLOT(moveR()), Qt::CTRL+Qt::Key_Right);
view->insertItem("Translate up", this, SLOT(moveU()), Qt::CTRL+Qt::Key_Up);
view->insertItem("Translate down", this, SLOT(moveD()), Qt::CTRL+Qt::Key_Down);
view->insertItem("&Mirror", this, SLOT(mirror()), Qt::CTRL+Qt::Key_Home);
menu->insertItem("&View", view);

menu->insertSeparator();

Q3PopupMenu* help = new Q3PopupMenu( menu );
help->insertItem("&About", this, SLOT(help()), Qt::Key_F1);
help->setItemChecked(dbf_id, TRUE);
menu->insertItem("&Help",help);

createStatusBar();

setCentralWidget(editor);

printer = 0;

init();
}

Anyone else? any other idea?

Regards,
Anirban