Qt Reference Documentation

examplewidget.h Example File

maemo5/webview/examplewidget.h
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 #ifndef EXAMPLEWIDGET_H
 #define EXAMPLEWIDGET_H

 #include "qwebviewselectionsuppressor.h"

 #include <QtGui/qwidget.h>
 #include <QtGui/qradiobutton.h>
 #include <QtGui/qbuttongroup.h>
 #include <QtGui/qabstractkineticscroller.h>
 #include <QtGui/qlayout.h>
 #include <QtWebKit/qwebview.h>

 #include <QApplication>

 class ExampleWidget : public QWidget
 {
     Q_OBJECT
 public:
     ExampleWidget()
     {
         const char exampleText[] =
             "<html>"
             "<body>"
             "<h1>WebKit Example</h1>"
             "<p>"
             "By default, a mouse move on the screen selects text. However, while "
             "finger scrolling, the view should just scroll, not select text. This example "
             "shows how to achieve the two different modes - either selecting text while "
             "swiping, or scrolling while swiping."
             "</p>"
             "<br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br />"
             "Some dummy text."
             "<br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br />"
             "End of page.";

         QVBoxLayout *layout = new QVBoxLayout(this);

         view = new QWebView;
         suppressor = new QWebViewSelectionSuppressor(view);
         QUrl url = QUrl::fromUserInput(QApplication::arguments().value(1));
         if (!url.isValid()) {
             view->setHtml(QLatin1String(exampleText));
         } else {
             view->settings()->setAttribute(QWebSettings::PluginsEnabled, true);
             view->load(url);
         }

         layout->addWidget(view);

         scrollButton = new QRadioButton("Scrolling Mode");
         scrollButton->setChecked(true);
         textButton = new QRadioButton("Text Selection Mode");

         QButtonGroup *mode = new QButtonGroup(this);
         mode->addButton(scrollButton);
         mode->addButton(textButton);

         QHBoxLayout *modeLayout = new QHBoxLayout();
         modeLayout->setSpacing(0);
         modeLayout->addWidget(scrollButton);
         modeLayout->addWidget(textButton);

         layout->addLayout(modeLayout);

         connect(mode, SIGNAL(buttonClicked(QAbstractButton*)), SLOT(buttonClicked(QAbstractButton*)));
     }

 private Q_SLOTS:
     void buttonClicked(QAbstractButton *button)
     {
         Q_ASSERT(view->property("kineticScroller").value<QAbstractKineticScroller *>());

         if (button == scrollButton) {
             suppressor->enable();
             view->property("kineticScroller").value<QAbstractKineticScroller *>()->setEnabled(true);
         }

         if (button == textButton) {
             suppressor->disable();
             view->property("kineticScroller").value<QAbstractKineticScroller *>()->setEnabled(false);
         }
     }

 private:
     QWebView *view;
     QWebViewSelectionSuppressor *suppressor;
     QRadioButton *scrollButton;
     QRadioButton *textButton;
 };

 #endif
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