Method SearchLineEdit

modules/QtPDF/PDFViewer.cpp:214–249

The SearchLineEdit class is adapted from code presented by Girish Ramakrishnan in a Qt Labs post: http://labs.qt.nokia.com/2007/06/06/lineedit-with-a-clear-button

//
//   http://labs.qt.nokia.com/2007/06/06/lineedit-with-a-clear-button
SearchLineEdit::SearchLineEdit(QWidget *parent):
  QLineEdit(parent)
{
  previousResultButton = new QToolButton(this);
  previousResultButton->setIcon(style()->standardIcon(QStyle::SP_ArrowLeft));
  previousResultButton->setCursor(Qt::ArrowCursor);
  previousResultButton->setStyleSheet(QString::fromUtf8("QToolButton { border: none; padding: 0px; }"));
  connect(previousResultButton, SIGNAL(clicked()), this, SLOT(handlePreviousResult()));

  nextResultButton = new QToolButton(this);
  nextResultButton->setIcon(style()->standardIcon(QStyle::SP_ArrowRight));
  nextResultButton->setCursor(Qt::ArrowCursor);
  nextResultButton->setStyleSheet(QString::fromUtf8("QToolButton { border: none; padding: 0px; }"));
  connect(nextResultButton, SIGNAL(clicked()), this, SLOT(handleNextResult()));

  clearButton = new QToolButton(this);
  clearButton->setIcon(style()->standardIcon(QStyle::SP_TitleBarCloseButton));
  clearButton->setCursor(Qt::ArrowCursor);
  clearButton->setStyleSheet(QString::fromUtf8("QToolButton { border: none; padding: 0px; }"));
  connect(clearButton, SIGNAL(clicked()), this, SLOT(clearSearch()));

  int frameWidth = style()->pixelMetric(QStyle::PM_DefaultFrameWidth);
  setStyleSheet(QString::fromUtf8("QLineEdit { padding-right: %1px; } ").arg(
      nextResultButton->sizeHint().width() +
      previousResultButton->sizeHint().width() +
      clearButton->sizeHint().width() + frameWidth + 1));
  QSize msz = minimumSizeHint();
  setMinimumSize(qMax(msz.width(), nextResultButton->sizeHint().width() +
      previousResultButton->sizeHint().width() +
      clearButton->sizeHint().width() + frameWidth * 2 + 2),
      qMax(msz.height(), clearButton->sizeHint().height() + frameWidth * 2 + 2));

  connect(this, SIGNAL(returnPressed()), this, SLOT(prepareSearch()));

  setPlaceholderText(QString::fromUtf8("Search"));
}

void SearchLineEdit::resizeEvent(QResizeEvent *)
{