Qt 5.7 | Qt WebEngine | WebEngine Widgets Simple Browser Example | urllineedit.cpp Example File

Qt 5.7.1 Reference Documentation

# urllineedit.cpp Example File

webenginewidgets/simplebrowser/urllineedit.cpp

      /****************************************************************************
      **
      ** Copyright (C) 2016 The Qt Company Ltd.
      ** Contact: http://www.qt.io/licensing/
      **
      ** This file is part of the examples of the Qt Toolkit.
      **
      ** $QT_BEGIN_LICENSE:BSD$
      ** You may use this file under the terms of the BSD license as follows:
      **
      ** "Redistribution and use in source and binary forms, with or without
      ** modification, are permitted provided that the following conditions are
      ** met:
      **   * Redistributions of source code must retain the above copyright
      **     notice, this list of conditions and the following disclaimer.
      **   * Redistributions in binary form must reproduce the above copyright
      **     notice, this list of conditions and the following disclaimer in
      **     the documentation and/or other materials provided with the
      **     distribution.
      **   * Neither the name of The Qt Company Ltd nor the names of its
      **     contributors may be used to endorse or promote products derived
      **     from this software without specific prior written permission.
      **
      **
      ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
      ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
      ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
      ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
      ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
      ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
      ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
      ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
      ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
      ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
      ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
      **
      ** $QT_END_LICENSE$
      **
      ****************************************************************************/

      #include "urllineedit.h"
      #include <QToolButton>
      #include <QUrl>

      UrlLineEdit::UrlLineEdit(QWidget *parent)
          : QLineEdit(parent)
          , m_favButton(new QToolButton(this))
          , m_clearButton(new QToolButton(this))
      {
          m_clearButton->setIcon(QIcon(QStringLiteral(":closetab.png")));
          m_clearButton->setVisible(false);
          m_clearButton->setCursor(Qt::ArrowCursor);
          QString style(QStringLiteral("QToolButton { border: none; padding: 1px; }"));
          m_clearButton->setStyleSheet(style);
          m_favButton->setStyleSheet(style);
          setStyleSheet(QStringLiteral("QLineEdit { padding-left: %1px; padding-right: %2px;  } ")
                        .arg(m_clearButton->sizeHint().width())
                        .arg(m_favButton->sizeHint().width()));
          int minIconHeight = qMax(m_favButton->sizeHint().height(), m_clearButton->sizeHint().height());
          setMinimumSize(minimumSizeHint().width() +
                         m_favButton->sizeHint().width() +
                         m_clearButton->sizeHint().width(),
                         qMax(minimumSizeHint().height(), minIconHeight));

          connect(m_clearButton, &QToolButton::clicked, this, &QLineEdit::clear);
          connect(this, &QLineEdit::textChanged, [this](const QString &text) {
              m_clearButton->setVisible(!text.isEmpty() && !isReadOnly());
          });
      }

      QUrl UrlLineEdit::url() const
      {
          return QUrl::fromUserInput(text());
      }

      void UrlLineEdit::setUrl(const QUrl &url)
      {
          setText(url.toString());
          setCursorPosition(0);
      }

      void UrlLineEdit::setFavIcon(const QIcon &icon)
      {
          QPixmap pixmap = icon.pixmap(16, 16);
          m_favButton->setIcon(pixmap);
      }

      void UrlLineEdit::resizeEvent(QResizeEvent *event)
      {
          QLineEdit::resizeEvent(event);
          QSize clearButtonSize = m_clearButton->sizeHint();
          m_clearButton->move(rect().right() - clearButtonSize.width(),
                              (rect().bottom() - clearButtonSize.height()) / 2);
          m_favButton->move(rect().left(), (rect().bottom() - m_favButton->sizeHint().height()) / 2);
      }