settings.cpp Example File | Qt WebEngine 5.8

Qt 5.8 | Qt WebEngine | WebEngine Demo Browser Example | settings.cpp Example File

Qt 5.8.0 Reference Documentation

# settings.cpp Example File

webenginewidgets/demobrowser/settings.cpp

      /****************************************************************************
      **
      ** Copyright (C) 2016 The Qt Company Ltd.
      ** Contact: https://www.qt.io/licensing/
      **
      ** This file is part of the demonstration applications of the Qt Toolkit.
      **
      ** $QT_BEGIN_LICENSE:BSD$
      ** Commercial License Usage
      ** Licensees holding valid commercial Qt licenses may use this file in
      ** accordance with the commercial license agreement provided with the
      ** Software or, alternatively, in accordance with the terms contained in
      ** a written agreement between you and The Qt Company. For licensing terms
      ** and conditions see https://www.qt.io/terms-conditions. For further
      ** information use the contact form at https://www.qt.io/contact-us.
      **
      ** BSD License Usage
      ** Alternatively, 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 "settings.h"

      #include "browserapplication.h"
      #include "browsermainwindow.h"
      #if defined(QWEBENGINEPAGE_SETNETWORKACCESSMANAGER)
      #include "cookiejar.h"
      #endif
      #include "history.h"
      #include "webview.h"

      #include <QtCore/QLocale>
      #include <QtCore/QSettings>
      #include <QtWidgets/QtWidgets>
      #include <QtWebEngineWidgets/QtWebEngineWidgets>

      SettingsDialog::SettingsDialog(QWidget *parent)
          : QDialog(parent)
      {
          setupUi(this);
          connect(setHomeToCurrentPageButton, SIGNAL(clicked()), this, SLOT(setHomeToCurrentPage()));
          connect(standardFontButton, SIGNAL(clicked()), this, SLOT(chooseFont()));
          connect(fixedFontButton, SIGNAL(clicked()), this, SLOT(chooseFixedFont()));

          loadDefaults();
          loadFromSettings();
      }

      static QString defaultAcceptLanguage()
      {
          const QStringList langs = QLocale().uiLanguages();
          if (langs.isEmpty())
              return QString();
          QString str = langs.first();
          const float qstep = 1.0f / float(langs.count());
          float q = 1.0f - qstep;
          for (int i = 1; i < langs.count(); ++i) {
              str += QStringLiteral(", ") + langs.at(i) + QStringLiteral(";q=") + QString::number(q, 'f', 2);
              q -= qstep;
          }
          return str;
      }

      void SettingsDialog::loadDefaults()
      {
          QWebEngineSettings *defaultSettings = QWebEngineSettings::globalSettings();
          QString standardFontFamily = defaultSettings->fontFamily(QWebEngineSettings::StandardFont);
          int standardFontSize = defaultSettings->fontSize(QWebEngineSettings::DefaultFontSize);
          standardFont = QFont(standardFontFamily, standardFontSize);
          standardLabel->setText(QString(QLatin1String("%1 %2")).arg(standardFont.family()).arg(standardFont.pointSize()));

          QString fixedFontFamily = defaultSettings->fontFamily(QWebEngineSettings::FixedFont);
          int fixedFontSize = defaultSettings->fontSize(QWebEngineSettings::DefaultFixedFontSize);
          fixedFont = QFont(fixedFontFamily, fixedFontSize);
          fixedLabel->setText(QString(QLatin1String("%1 %2")).arg(fixedFont.family()).arg(fixedFont.pointSize()));

          downloadsLocation->setText(QStandardPaths::writableLocation(QStandardPaths::DesktopLocation));

          enableJavascript->setChecked(defaultSettings->testAttribute(QWebEngineSettings::JavascriptEnabled));
          enablePlugins->setChecked(defaultSettings->testAttribute(QWebEngineSettings::PluginsEnabled));

          enableScrollAnimator->setChecked(defaultSettings->testAttribute(QWebEngineSettings::ScrollAnimatorEnabled));

          persistentDataPath->setText(QWebEngineProfile::defaultProfile()->persistentStoragePath());
          sessionCookiesCombo->setCurrentIndex(QWebEngineProfile::defaultProfile()->persistentCookiesPolicy());
          httpUserAgent->setText(QWebEngineProfile::defaultProfile()->httpUserAgent());
          httpAcceptLanguage->setText(defaultAcceptLanguage());

          if (!defaultSettings->testAttribute(QWebEngineSettings::AutoLoadIconsForPage))
              faviconDownloadMode->setCurrentIndex(0);
          else if (!defaultSettings->testAttribute(QWebEngineSettings::TouchIconsEnabled))
              faviconDownloadMode->setCurrentIndex(1);
          else
              faviconDownloadMode->setCurrentIndex(2);
      }

      void SettingsDialog::loadFromSettings()
      {
          QSettings settings;
          settings.beginGroup(QLatin1String("MainWindow"));
          const QString defaultHome = QLatin1String(BrowserMainWindow::defaultHome);
          homeLineEdit->setText(settings.value(QLatin1String("home"), defaultHome).toString());
          settings.endGroup();

          settings.beginGroup(QLatin1String("history"));
          int historyExpire = settings.value(QLatin1String("historyExpire")).toInt();
          int idx = 0;
          switch (historyExpire) {
          case 1: idx = 0; break;
          case 7: idx = 1; break;
          case 14: idx = 2; break;
          case 30: idx = 3; break;
          case 365: idx = 4; break;
          case -1: idx = 5; break;
          default:
              idx = 5;
          }
          expireHistory->setCurrentIndex(idx);
          settings.endGroup();

          settings.beginGroup(QLatin1String("downloadmanager"));
          QString downloadDirectory = settings.value(QLatin1String("downloadDirectory"), downloadsLocation->text()).toString();
          downloadsLocation->setText(downloadDirectory);
          settings.endGroup();

          settings.beginGroup(QLatin1String("general"));
          openLinksIn->setCurrentIndex(settings.value(QLatin1String("openLinksIn"), openLinksIn->currentIndex()).toInt());

          settings.endGroup();

          // Appearance
          settings.beginGroup(QLatin1String("websettings"));
          fixedFont = qvariant_cast<QFont>(settings.value(QLatin1String("fixedFont"), fixedFont));
          standardFont = qvariant_cast<QFont>(settings.value(QLatin1String("standardFont"), standardFont));

          standardLabel->setText(QString(QLatin1String("%1 %2")).arg(standardFont.family()).arg(standardFont.pointSize()));
          fixedLabel->setText(QString(QLatin1String("%1 %2")).arg(fixedFont.family()).arg(fixedFont.pointSize()));

          enableJavascript->setChecked(settings.value(QLatin1String("enableJavascript"), enableJavascript->isChecked()).toBool());
          enablePlugins->setChecked(settings.value(QLatin1String("enablePlugins"), enablePlugins->isChecked()).toBool());
          userStyleSheet->setPlainText(settings.value(QLatin1String("userStyleSheet")).toString());
          enableScrollAnimator->setChecked(settings.value(QLatin1String("enableScrollAnimator"), enableScrollAnimator->isChecked()).toBool());
          httpUserAgent->setText(settings.value(QLatin1String("httpUserAgent"), httpUserAgent->text()).toString());
          httpAcceptLanguage->setText(settings.value(QLatin1String("httpAcceptLanguage"), httpAcceptLanguage->text()).toString());
          faviconDownloadMode->setCurrentIndex(settings.value(QLatin1String("faviconDownloadMode"), faviconDownloadMode->currentIndex()).toInt());
          settings.endGroup();

          // Privacy
          settings.beginGroup(QLatin1String("cookies"));

          int persistentCookiesPolicy = settings.value(QLatin1String("persistentCookiesPolicy"), sessionCookiesCombo->currentIndex()).toInt();
          sessionCookiesCombo->setCurrentIndex(persistentCookiesPolicy);

          QString pdataPath = settings.value(QLatin1String("persistentDataPath"), persistentDataPath->text()).toString();
          persistentDataPath->setText(pdataPath);

          settings.endGroup();

          // Proxy
          settings.beginGroup(QLatin1String("proxy"));
          proxySupport->setChecked(settings.value(QLatin1String("enabled"), false).toBool());
          proxyType->setCurrentIndex(settings.value(QLatin1String("type"), 0).toInt());
          proxyHostName->setText(settings.value(QLatin1String("hostName")).toString());
          proxyPort->setValue(settings.value(QLatin1String("port"), 1080).toInt());
          proxyUserName->setText(settings.value(QLatin1String("userName")).toString());
          proxyPassword->setText(settings.value(QLatin1String("password")).toString());
          settings.endGroup();
      }

      void SettingsDialog::saveToSettings()
      {
          QSettings settings;
          settings.beginGroup(QLatin1String("MainWindow"));
          settings.setValue(QLatin1String("home"), homeLineEdit->text());
          settings.endGroup();

          settings.beginGroup(QLatin1String("general"));
          settings.setValue(QLatin1String("openLinksIn"), openLinksIn->currentIndex());
          settings.endGroup();

          settings.beginGroup(QLatin1String("history"));
          int historyExpire = expireHistory->currentIndex();
          int idx = -1;
          switch (historyExpire) {
          case 0: idx = 1; break;
          case 1: idx = 7; break;
          case 2: idx = 14; break;
          case 3: idx = 30; break;
          case 4: idx = 365; break;
          case 5: idx = -1; break;
          }
          settings.setValue(QLatin1String("historyExpire"), idx);
          settings.endGroup();

          // Appearance
          settings.beginGroup(QLatin1String("websettings"));
          settings.setValue(QLatin1String("fixedFont"), fixedFont);
          settings.setValue(QLatin1String("standardFont"), standardFont);
          settings.setValue(QLatin1String("enableJavascript"), enableJavascript->isChecked());
          settings.setValue(QLatin1String("enablePlugins"), enablePlugins->isChecked());
          settings.setValue(QLatin1String("enableScrollAnimator"), enableScrollAnimator->isChecked());
          settings.setValue(QLatin1String("userStyleSheet"), userStyleSheet->toPlainText());
          settings.setValue(QLatin1String("httpUserAgent"), httpUserAgent->text());
          settings.setValue(QLatin1String("httpAcceptLanguage"), httpAcceptLanguage->text());
          settings.setValue(QLatin1String("faviconDownloadMode"), faviconDownloadMode->currentIndex());
          settings.endGroup();

          //Privacy
          settings.beginGroup(QLatin1String("cookies"));

          int persistentCookiesPolicy = sessionCookiesCombo->currentIndex();
          settings.setValue(QLatin1String("persistentCookiesPolicy"), persistentCookiesPolicy);

          QString pdataPath = persistentDataPath->text();
          settings.setValue(QLatin1String("persistentDataPath"), pdataPath);

          settings.endGroup();

          // proxy
          settings.beginGroup(QLatin1String("proxy"));
          settings.setValue(QLatin1String("enabled"), proxySupport->isChecked());
          settings.setValue(QLatin1String("type"), proxyType->currentIndex());
          settings.setValue(QLatin1String("hostName"), proxyHostName->text());
          settings.setValue(QLatin1String("port"), proxyPort->text());
          settings.setValue(QLatin1String("userName"), proxyUserName->text());
          settings.setValue(QLatin1String("password"), proxyPassword->text());
          settings.endGroup();

          BrowserApplication::instance()->loadSettings();
      #if defined(QWEBENGINEPAGE_SETNETWORKACCESSMANAGER)
          BrowserApplication::cookieJar()->loadSettings();
      #endif
          BrowserApplication::historyManager()->loadSettings();
      }

      void SettingsDialog::accept()
      {
          saveToSettings();
          QDialog::accept();
      }

      void SettingsDialog::showCookies()
      {
      #if defined(QWEBENGINEPAGE_SETNETWORKACCESSMANAGER)
          CookiesDialog *dialog = new CookiesDialog(BrowserApplication::cookieJar(), this);
          dialog->exec();
      #endif
      }

      void SettingsDialog::showExceptions()
      {
      #if defined(QWEBENGINEPAGE_SETNETWORKACCESSMANAGER)
          CookiesExceptionsDialog *dialog = new CookiesExceptionsDialog(BrowserApplication::cookieJar(), this);
          dialog->exec();
      #endif
      }

      void SettingsDialog::chooseFont()
      {
          bool ok;
          QFont font = QFontDialog::getFont(&ok, standardFont, this);
          if ( ok ) {
              standardFont = font;
              standardLabel->setText(QString(QLatin1String("%1 %2")).arg(font.family()).arg(font.pointSize()));
          }
      }

      void SettingsDialog::chooseFixedFont()
      {
          bool ok;
          QFont font = QFontDialog::getFont(&ok, fixedFont, this);
          if ( ok ) {
              fixedFont = font;
              fixedLabel->setText(QString(QLatin1String("%1 %2")).arg(font.family()).arg(font.pointSize()));
          }
      }

      void SettingsDialog::on_httpUserAgent_editingFinished()
      {
          QWebEngineProfile::defaultProfile()->setHttpUserAgent(httpUserAgent->text());
      }

      void SettingsDialog::on_httpAcceptLanguage_editingFinished()
      {
          QWebEngineProfile::defaultProfile()->setHttpAcceptLanguage(httpAcceptLanguage->text());
      }

      void SettingsDialog::setHomeToCurrentPage()
      {
          BrowserMainWindow *mw = static_cast<BrowserMainWindow*>(parent());
          WebView *webView = mw->currentTab();
          if (webView)
              homeLineEdit->setText(webView->url().toString());
      }