release/src-rt-6.x.4708/router/transmission/qt/favicon.h

   1 /*
   2  * This file Copyright (C) 2012-2014 Mnemosyne LLC
   3  *
   4  * It may be used under the GNU GPL versions 2 or 3
   5  * or any future license endorsed by Mnemosyne LLC.
   6  *
   7  * $Id: favicon.h 14241 2014-01-21 03:10:30Z jordan $
   8  */
   9
  10 #ifndef FAVICON_CACHE_H
  11 #define FAVICON_CACHE_H
  12
  13 class QNetworkAccessManager;
  14 class QNetworkReply;
  15 class QUrl;
  16
  17 #include <QMap>
  18 #include <QString>
  19 #include <QObject>
  20 #include <QPixmap>
  21
  22 class Favicons: public QObject
  23 {
  24     Q_OBJECT;
  25
  26   public:
  27
  28     static QString getHost( const QUrl& url );
  29
  30   public:
  31
  32     Favicons();
  33     virtual ~Favicons();
  34
  35     // returns a cached pixmap, or a NULL pixmap if there's no match in the cache
  36     QPixmap find (const QUrl& url);
  37
  38     // returns a cached pixmap, or a NULL pixmap if there's no match in the cache
  39     QPixmap findFromHost (const QString& host);
  40
  41     // this will emit a signal when (if) the icon becomes ready
  42     void add (const QUrl& url);
  43
  44   signals:
  45
  46     void pixmapReady (const QString& host);
  47
  48   private:
  49
  50     QNetworkAccessManager * myNAM;
  51     QMap<QString,QPixmap> myPixmaps;
  52
  53     QString getCacheDir ();
  54     void ensureCacheDirHasBeenScanned ();
  55
  56   private slots:
  57
  58     void onRequestFinished (QNetworkReply * reply);
  59 };
  60
  61 #endif