Qt Reference Documentation

testwidget.cpp Example File

widgets/elidedlabel/testwidget.cpp
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 #include "testwidget.h"
 #include "elidedlabel.h"

 #include <QLabel>
 #include <QPushButton>
 #include <QSizePolicy>
 #include <QGridLayout>

 TestWidget::TestWidget(QWidget *parent):
     QWidget(parent)
 {
     const QString romeo = tr(
         "But soft, what light through yonder window breaks? / "
         "It is the east, and Juliet is the sun. / "
         "Arise, fair sun, and kill the envious moon, / "
         "Who is already sick and pale with grief / "
         "That thou, her maid, art far more fair than she."
     );

     const QString macbeth = tr(
         "To-morrow, and to-morrow, and to-morrow, / "
         "Creeps in this petty pace from day to day, / "
         "To the last syllable of recorded time; / "
         "And all our yesterdays have lighted fools / "
         "The way to dusty death. Out, out, brief candle! / "
         "Life's but a walking shadow, a poor player, / "
         "That struts and frets his hour upon the stage, / "
         "And then is heard no more. It is a tale / "
         "Told by an idiot, full of sound and fury, / "
         "Signifying nothing."
     );

     const QString harry = tr("Feeling lucky, punk?");

     textSamples << romeo << macbeth << harry;

     sampleIndex = 0;
     elidedText = new ElidedLabel(textSamples[sampleIndex], this);
     elidedText->setFrameStyle(QFrame::Box);

     QPushButton *switchButton = new QPushButton(tr("Switch text"));
     connect(switchButton, SIGNAL(clicked(bool)), this, SLOT(switchText()));

     QPushButton *exitButton = new QPushButton(tr("Exit"));
     connect(exitButton, SIGNAL(clicked(bool)), this, SLOT(close()));

     QLabel *label = new QLabel(tr("Elided"));
     label->setVisible(elidedText->isElided());
     connect(elidedText, SIGNAL(elisionChanged(bool)), label, SLOT(setVisible(bool)));

     widthSlider = new QSlider(Qt::Horizontal);
     widthSlider->setMinimum(0);
     connect(widthSlider, SIGNAL(valueChanged(int)), this, SLOT(onWidthChanged(int)));

     heightSlider = new QSlider(Qt::Vertical);
     heightSlider->setInvertedAppearance(true);
     heightSlider->setMinimum(0);
     connect(heightSlider, SIGNAL(valueChanged(int)), this, SLOT(onHeightChanged(int)));

     QGridLayout *layout = new QGridLayout();
     layout->addWidget(label, 0, 1, Qt::AlignCenter);
     layout->addWidget(switchButton, 0, 2);
     layout->addWidget(exitButton, 0, 3);
     layout->addWidget(widthSlider, 1, 1, 1, 3);
     layout->addWidget(heightSlider, 2, 0);
     layout->addWidget(elidedText, 2, 1, 1, 3, Qt::AlignTop | Qt::AlignLeft);

     setLayout(layout);

 #ifdef Q_WS_MAEMO_5
     setAttribute(Qt::WA_Maemo5AutoOrientation, true);
 #endif
 }

 void TestWidget::resizeEvent(QResizeEvent *event)
 {
     Q_UNUSED(event)

     int maxWidth = widthSlider->width();
     widthSlider->setMaximum(maxWidth);
     widthSlider->setValue(maxWidth / 2);

     int maxHeight = heightSlider->height();
     heightSlider->setMaximum(maxHeight);
     heightSlider->setValue(maxHeight / 2);

     elidedText->setFixedSize(widthSlider->value(), heightSlider->value());
 }

 void TestWidget::switchText()
 {
     sampleIndex = (sampleIndex + 1) % textSamples.size();
     elidedText->setText(textSamples.at(sampleIndex));
 }

 void TestWidget::onWidthChanged(int width)
 {
     elidedText->setFixedWidth(width);
 }

 void TestWidget::onHeightChanged(int height)
 {
     elidedText->setFixedHeight(height);
 }