qgswebview.h

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/***************************************************************************
 
               ----------------------------------------------------
              date                 : 19.5.2015
              copyright            : (C) 2015 by Matthias Kuhn
              email                : matthias (at) opengis.ch
 ***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/
 
#ifndef QGSWEBVIEW_H
#define QGSWEBVIEW_H
 
 
#define SIP_NO_FILE
 
#include <QWidget>
 
#ifdef WITH_QTWEBKIT
#include <QWebView>
#include <QDesktopWidget>
 
#include "qgis_core.h"
 
 
class CORE_EXPORT QgsWebView : public QWebView
{
    Q_OBJECT
 
  public:
    explicit QgsWebView( QWidget *parent = nullptr )
      : QWebView( parent )
    {
      const QDesktopWidget desktop;
      // Apply zoom factor for HiDPI screens
      if ( desktop.logicalDpiX() > 96 )
      {
        setZoomFactor( desktop.logicalDpiX() / 96 );
      }
    }
};
#else
#include "qgswebpage.h"
#include <QTextBrowser>
 
class QPrinter;
 
class CORE_EXPORT QgsWebView : public QTextBrowser
{
 
    Q_OBJECT
  public:
    explicit QgsWebView( QWidget *parent = nullptr )
      : QTextBrowser( parent )
      , mSettings( new QWebSettings() )
      , mPage( new QWebPage( this ) )
    {
      connect( this, &QTextBrowser::anchorClicked, this, &QgsWebView::linkClicked );
      connect( this, &QgsWebView::pageLoadFinished, mPage, &QWebPage::loadFinished );
    }
 
    ~QgsWebView()
    {
      delete mSettings;
      delete mPage;
    }
 
    void setUrl( const QUrl &url )
    {
      setSource( url );
    }
 
    void load( const QUrl &url )
    {
      setSource( url );
    }
 
    QUrl url() const
    {
      return source();
    }
 
    QWebPage *page() const
    {
      return mPage;
    }
 
    QWebSettings *settings() const
    {
      return mSettings;
    }
 
    virtual QgsWebView *createWindow( QWebPage::WebWindowType )
    {
      return new QgsWebView();
    }
 
    void setContent( const QByteArray &data, const QString &contentType, const QUrl & )
    {
      QString text = QString::fromUtf8( data );
      if ( contentType == "text/html" )
        setHtml( text );
      else
        setPlainText( text );
 
      emit pageLoadFinished( true );
    }
 
    void print( QPrinter * )
    {
    }
 
  signals:
    void linkClicked( const QUrl &link );
 
    void pageLoadFinished( bool ok );
 
  public slots:
 
    void setHtml( const QString &text )
    {
      QTextBrowser::setHtml( text );
      emit pageLoadFinished( true );
    }
 
    void setText( const QString &text )
    {
      QTextBrowser::setText( text );
      emit pageLoadFinished( true );
    }
 
  private:
    QWebSettings *mSettings = nullptr;
    QWebPage *mPage = nullptr;
 
};
#endif
 
#endif // QGSWEBVIEW_H