embeddeddialog.cpp Example File | Qt Widgets 5.12.8

Qt 5.12 | Qt Widgets | Embedded Dialogs | embeddeddialog.cpp Example File

Qt 5.12.8 Reference Documentation

# embeddeddialog.cpp Example File

graphicsview/embeddeddialogs/embeddeddialog.cpp

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      #include "embeddeddialog.h"
      #include "ui_embeddeddialog.h"

      #include <QStyleFactory>

      EmbeddedDialog::EmbeddedDialog(QWidget *parent)
          : QDialog(parent)
          , ui(new Ui::EmbeddedDialog)
      {
          ui->setupUi(this);
          ui->layoutDirection->setCurrentIndex(layoutDirection() != Qt::LeftToRight);

          foreach (QString styleName, QStyleFactory::keys()) {
              ui->style->addItem(styleName);
              if (style()->objectName().toLower() == styleName.toLower())
                  ui->style->setCurrentIndex(ui->style->count() - 1);
          }

          connect(ui->layoutDirection, QOverload<int>::of(&QComboBox::activated),
                  this, &EmbeddedDialog::layoutDirectionChanged);
          connect(ui->spacing, &QSlider::valueChanged,
                  this, &EmbeddedDialog::spacingChanged);
          connect(ui->fontComboBox, &QFontComboBox::currentFontChanged,
                  this, &EmbeddedDialog::fontChanged);
          connect(ui->style, QOverload<const QString &>::of(&QComboBox::activated),
                  this, &EmbeddedDialog::styleChanged);
      }

      EmbeddedDialog::~EmbeddedDialog()
      {
          delete ui;
      }

      void EmbeddedDialog::layoutDirectionChanged(int index)
      {
          setLayoutDirection(index == 0 ? Qt::LeftToRight : Qt::RightToLeft);
      }

      void EmbeddedDialog::spacingChanged(int spacing)
      {
          layout()->setSpacing(spacing);
          adjustSize();
      }

      void EmbeddedDialog::fontChanged(const QFont &font)
      {
          setFont(font);
      }

      static void setStyleHelper(QWidget *widget, QStyle *style)
      {
          widget->setStyle(style);
          widget->setPalette(style->standardPalette());
          foreach (QObject *child, widget->children()) {
              if (QWidget *childWidget = qobject_cast<QWidget *>(child))
                  setStyleHelper(childWidget, style);
          }
      }

      void EmbeddedDialog::styleChanged(const QString &styleName)
      {
          QStyle *style = QStyleFactory::create(styleName);
          if (style)
              setStyleHelper(this, style);
      }