Qt 5.6 | Qt Widgets | SIP Dialog Example | dialog.cpp Example File

Qt 5.6.3 Reference Documentation

# dialog.cpp Example File

dialogs/sipdialog/dialog.cpp

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      #include <QtWidgets>

      #include "dialog.h"

      Dialog::Dialog()
      {
          desktopGeometry = QApplication::desktop()->availableGeometry(0);

          setWindowTitle(tr("SIP Dialog Example"));
          QScrollArea *scrollArea = new QScrollArea(this);
          QGroupBox *groupBox = new QGroupBox(scrollArea);
          groupBox->setTitle(tr("SIP Dialog Example"));
          QGridLayout *gridLayout = new QGridLayout(groupBox);
          groupBox->setLayout(gridLayout);

          QLineEdit* lineEdit = new QLineEdit(groupBox);
          lineEdit->setText(tr("Open and close the SIP"));
          lineEdit->setMinimumWidth(220);

          QLabel* label = new QLabel(groupBox);
          label->setText(tr("This dialog resizes if the SIP is opened"));
          label->setMinimumWidth(220);

          QPushButton* button = new QPushButton(groupBox);
          button->setText(tr("Close Dialog"));
          button->setMinimumWidth(220);

          if (desktopGeometry.height() < 400)
              gridLayout->setVerticalSpacing(80);
          else
              gridLayout->setVerticalSpacing(150);

          gridLayout->addWidget(label);
          gridLayout->addWidget(lineEdit);
          gridLayout->addWidget(button);

          scrollArea->setWidget(groupBox);
          QHBoxLayout* layout = new QHBoxLayout();
          layout->addWidget(scrollArea);
          setLayout(layout);
          scrollArea->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);

          connect(button, &QAbstractButton::clicked, qApp, &QApplication::closeAllWindows);
          connect(QApplication::desktop(), &QDesktopWidget::workAreaResized,
              this, &Dialog::desktopResized);
      }

      void Dialog::desktopResized(int screen)
      {
          if (screen != 0)
              return;
          reactToSIP();
      }

      void Dialog::reactToSIP()
      {
          QRect availableGeometry = QApplication::desktop()->availableGeometry(0);

          if (desktopGeometry != availableGeometry) {
              if (windowState() | Qt::WindowMaximized)
                  setWindowState(windowState() & ~Qt::WindowMaximized);

              setGeometry(availableGeometry);
          }

          desktopGeometry = availableGeometry;
      }