Qt 5.11 | Qt Widgets | License Wizard Example | licensewizard.cpp Example File

Qt 5.11.3 Reference Documentation

# licensewizard.cpp Example File

dialogs/licensewizard/licensewizard.cpp

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      #include <QtWidgets>
      #if defined(QT_PRINTSUPPORT_LIB)
      #include <QtPrintSupport/qtprintsupportglobal.h>
      #if QT_CONFIG(printdialog)
      #include <QPrinter>
      #include <QPrintDialog>
      #endif
      #endif

      #include "licensewizard.h"

      QString emailRegExp = QStringLiteral(".+@.+");

      LicenseWizard::LicenseWizard(QWidget *parent)
          : QWizard(parent)
      {
          setPage(Page_Intro, new IntroPage);
          setPage(Page_Evaluate, new EvaluatePage);
          setPage(Page_Register, new RegisterPage);
          setPage(Page_Details, new DetailsPage);
          setPage(Page_Conclusion, new ConclusionPage);

          setStartId(Page_Intro);

      #ifndef Q_OS_MAC
          setWizardStyle(ModernStyle);
      #endif
          setOption(HaveHelpButton, true);
          setPixmap(QWizard::LogoPixmap, QPixmap(":/images/logo.png"));

          connect(this, &QWizard::helpRequested, this, &LicenseWizard::showHelp);

          setWindowTitle(tr("License Wizard"));
      }

      void LicenseWizard::showHelp()
      {
          static QString lastHelpMessage;

          QString message;

          switch (currentId()) {
          case Page_Intro:
              message = tr("The decision you make here will affect which page you "
                           "get to see next.");
              break;
          case Page_Evaluate:
              message = tr("Make sure to provide a valid email address, such as "
                           "toni.buddenbrook@example.de.");
              break;
          case Page_Register:
              message = tr("If you don't provide an upgrade key, you will be "
                           "asked to fill in your details.");
              break;
          case Page_Details:
              message = tr("Make sure to provide a valid email address, such as "
                           "thomas.gradgrind@example.co.uk.");
              break;
          case Page_Conclusion:
              message = tr("You must accept the terms and conditions of the "
                           "license to proceed.");
              break;
          default:
              message = tr("This help is likely not to be of any help.");
          }

          if (lastHelpMessage == message)
              message = tr("Sorry, I already gave what help I could. "
                           "Maybe you should try asking a human?");

          QMessageBox::information(this, tr("License Wizard Help"), message);

          lastHelpMessage = message;
      }

      IntroPage::IntroPage(QWidget *parent)
          : QWizardPage(parent)
      {
          setTitle(tr("Introduction"));
          setPixmap(QWizard::WatermarkPixmap, QPixmap(":/images/watermark.png"));

          topLabel = new QLabel(tr("This wizard will help you register your copy of "
                                   "<i>Super Product One</i>&trade; or start "
                                   "evaluating the product."));
          topLabel->setWordWrap(true);

          registerRadioButton = new QRadioButton(tr("&Register your copy"));
          evaluateRadioButton = new QRadioButton(tr("&Evaluate the product for 30 "
                                                    "days"));
          registerRadioButton->setChecked(true);

          QVBoxLayout *layout = new QVBoxLayout;
          layout->addWidget(topLabel);
          layout->addWidget(registerRadioButton);
          layout->addWidget(evaluateRadioButton);
          setLayout(layout);
      }

      int IntroPage::nextId() const
      {
          if (evaluateRadioButton->isChecked()) {
              return LicenseWizard::Page_Evaluate;
          } else {
              return LicenseWizard::Page_Register;
          }
      }

      EvaluatePage::EvaluatePage(QWidget *parent)
          : QWizardPage(parent)
      {
          setTitle(tr("Evaluate <i>Super Product One</i>&trade;"));
          setSubTitle(tr("Please fill both fields. Make sure to provide a valid "
                         "email address (e.g., john.smith@example.com)."));

          nameLabel = new QLabel(tr("N&ame:"));
          nameLineEdit = new QLineEdit;
          nameLabel->setBuddy(nameLineEdit);

          emailLabel = new QLabel(tr("&Email address:"));
          emailLineEdit = new QLineEdit;
          emailLineEdit->setValidator(new QRegularExpressionValidator(QRegularExpression(emailRegExp), this));
          emailLabel->setBuddy(emailLineEdit);

          registerField("evaluate.name*", nameLineEdit);
          registerField("evaluate.email*", emailLineEdit);

          QGridLayout *layout = new QGridLayout;
          layout->addWidget(nameLabel, 0, 0);
          layout->addWidget(nameLineEdit, 0, 1);
          layout->addWidget(emailLabel, 1, 0);
          layout->addWidget(emailLineEdit, 1, 1);
          setLayout(layout);
      }

      int EvaluatePage::nextId() const
      {
          return LicenseWizard::Page_Conclusion;
      }

      RegisterPage::RegisterPage(QWidget *parent)
          : QWizardPage(parent)
      {
          setTitle(tr("Register Your Copy of <i>Super Product One</i>&trade;"));
          setSubTitle(tr("If you have an upgrade key, please fill in "
                         "the appropriate field."));

          nameLabel = new QLabel(tr("N&ame:"));
          nameLineEdit = new QLineEdit;
          nameLabel->setBuddy(nameLineEdit);

          upgradeKeyLabel = new QLabel(tr("&Upgrade key:"));
          upgradeKeyLineEdit = new QLineEdit;
          upgradeKeyLabel->setBuddy(upgradeKeyLineEdit);

          registerField("register.name*", nameLineEdit);
          registerField("register.upgradeKey", upgradeKeyLineEdit);

          QGridLayout *layout = new QGridLayout;
          layout->addWidget(nameLabel, 0, 0);
          layout->addWidget(nameLineEdit, 0, 1);
          layout->addWidget(upgradeKeyLabel, 1, 0);
          layout->addWidget(upgradeKeyLineEdit, 1, 1);
          setLayout(layout);
      }

      int RegisterPage::nextId() const
      {
          if (upgradeKeyLineEdit->text().isEmpty()) {
              return LicenseWizard::Page_Details;
          } else {
              return LicenseWizard::Page_Conclusion;
          }
      }

      DetailsPage::DetailsPage(QWidget *parent)
          : QWizardPage(parent)
      {
          setTitle(tr("Fill In Your Details"));
          setSubTitle(tr("Please fill all three fields. Make sure to provide a valid "
                         "email address (e.g., tanaka.aya@example.co.jp)."));

          companyLabel = new QLabel(tr("&Company name:"));
          companyLineEdit = new QLineEdit;
          companyLabel->setBuddy(companyLineEdit);

          emailLabel = new QLabel(tr("&Email address:"));
          emailLineEdit = new QLineEdit;
          emailLineEdit->setValidator(new QRegularExpressionValidator(QRegularExpression(emailRegExp), this));
          emailLabel->setBuddy(emailLineEdit);

          postalLabel = new QLabel(tr("&Postal address:"));
          postalLineEdit = new QLineEdit;
          postalLabel->setBuddy(postalLineEdit);

          registerField("details.company*", companyLineEdit);
          registerField("details.email*", emailLineEdit);
          registerField("details.postal*", postalLineEdit);

          QGridLayout *layout = new QGridLayout;
          layout->addWidget(companyLabel, 0, 0);
          layout->addWidget(companyLineEdit, 0, 1);
          layout->addWidget(emailLabel, 1, 0);
          layout->addWidget(emailLineEdit, 1, 1);
          layout->addWidget(postalLabel, 2, 0);
          layout->addWidget(postalLineEdit, 2, 1);
          setLayout(layout);
      }

      int DetailsPage::nextId() const
      {
          return LicenseWizard::Page_Conclusion;
      }

      ConclusionPage::ConclusionPage(QWidget *parent)
          : QWizardPage(parent)
      {
          setTitle(tr("Complete Your Registration"));
          setPixmap(QWizard::WatermarkPixmap, QPixmap(":/images/watermark.png"));

          bottomLabel = new QLabel;
          bottomLabel->setWordWrap(true);

          agreeCheckBox = new QCheckBox(tr("I agree to the terms of the license"));

          registerField("conclusion.agree*", agreeCheckBox);

          QVBoxLayout *layout = new QVBoxLayout;
          layout->addWidget(bottomLabel);
          layout->addWidget(agreeCheckBox);
          setLayout(layout);
      }

      int ConclusionPage::nextId() const
      {
          return -1;
      }

      void ConclusionPage::initializePage()
      {
          QString licenseText;

          if (wizard()->hasVisitedPage(LicenseWizard::Page_Evaluate)) {
              licenseText = tr("<u>Evaluation License Agreement:</u> "
                               "You can use this software for 30 days and make one "
                               "backup, but you are not allowed to distribute it.");
          } else if (wizard()->hasVisitedPage(LicenseWizard::Page_Details)) {
              licenseText = tr("<u>First-Time License Agreement:</u> "
                               "You can use this software subject to the license "
                               "you will receive by email.");
          } else {
              licenseText = tr("<u>Upgrade License Agreement:</u> "
                               "This software is licensed under the terms of your "
                               "current license.");
          }
          bottomLabel->setText(licenseText);
      }

      void ConclusionPage::setVisible(bool visible)
      {
          QWizardPage::setVisible(visible);

          if (visible) {
              wizard()->setButtonText(QWizard::CustomButton1, tr("&Print"));
              wizard()->setOption(QWizard::HaveCustomButton1, true);
              connect(wizard(), &QWizard::customButtonClicked,
                      this, &ConclusionPage::printButtonClicked);
          } else {
              wizard()->setOption(QWizard::HaveCustomButton1, false);
              disconnect(wizard(), &QWizard::customButtonClicked,
                         this, &ConclusionPage::printButtonClicked);
          }
      }

      void ConclusionPage::printButtonClicked()
      {
      #if QT_CONFIG(printdialog)
          QPrinter printer;
          QPrintDialog dialog(&printer, this);
          if (dialog.exec())
              QMessageBox::warning(this, tr("Print License"),
                                   tr("As an environmentally friendly measure, the "
                                      "license text will not actually be printed."));
      #endif
      }