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     2 **

     3 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).

     4 ** All rights reserved.

     5 ** Contact: Nokia Corporation (qt-info@nokia.com)

     6 **

     7 ** This file is part of the QtDeclarative module of the Qt Toolkit.

     8 **

     9 ** $QT_BEGIN_LICENSE:LGPL$

    10 ** No Commercial Usage

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    12 ** You may use this file in accordance with the terms and conditions

    13 ** contained in the Technology Preview License Agreement accompanying

    14 ** this package.

    15 **

    16 ** GNU Lesser General Public License Usage

    17 ** Alternatively, this file may be used under the terms of the GNU Lesser

    18 ** General Public License version 2.1 as published by the Free Software

    19 ** Foundation and appearing in the file LICENSE.LGPL included in the

    20 ** packaging of this file.  Please review the following information to

    21 ** ensure the GNU Lesser General Public License version 2.1 requirements

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    23 **

    24 ** In addition, as a special exception, Nokia gives you certain additional

    25 ** rights.  These rights are described in the Nokia Qt LGPL Exception

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    38 ** $QT_END_LICENSE$

    39 **

    40 ****************************************************************************/

    41 

    42 #ifndef QDECLARATIVEPIXMAPCACHE_H

    43 #define QDECLARATIVEPIXMAPCACHE_H

    44 

    45 #include <QtCore/QString>

    46 #include <QtGui/QPixmap>

    47 #include <QtCore/qurl.h>

    48 #include <QtCore/QCoreApplication>

    49 

    50 QT_BEGIN_HEADER

    51 

    52 QT_BEGIN_NAMESPACE

    53 

    54 QT_MODULE(Declarative)

    55 class QDeclarativeEngine;

    56 class QNetworkReply;

    57 class QDeclarativeImageReader;

    58 

    59 class QDeclarativePixmapReplyPrivate;

    60 class Q_DECLARATIVE_EXPORT QDeclarativePixmapReply : public QObject

    61 {

    62     Q_OBJECT

    63 public:

    64     ~QDeclarativePixmapReply();

    65 

    66     enum Status { Ready, Error, Unrequested, Loading };

    67     Status status() const;

    68     QString errorString() const;

    69 

    70     const QUrl &url() const;

    71     int forcedWidth() const;

    72     int forcedHeight() const;

    73     QSize implicitSize() const;

    74 

    75 Q_SIGNALS:

    76     void finished();

    77     void downloadProgress(qint64, qint64);

    78 

    79 protected:

    80     bool event(QEvent *event);

    81 

    82 private:

    83     void addRef();

    84     bool release(bool defer=false);

    85     bool isLoading() const;

    86     void setLoading();

    87 

    88 private:

    89     QDeclarativePixmapReply(QDeclarativeImageReader *reader, const QUrl &url, int req_width, int req_height);

    90     Q_DISABLE_COPY(QDeclarativePixmapReply)

    91     Q_DECLARE_PRIVATE(QDeclarativePixmapReply)

    92     friend class QDeclarativeImageRequestHandler;

    93     friend class QDeclarativeImageReader;

    94     friend class QDeclarativePixmapCache;

    95 };

    96 

    97 class Q_DECLARATIVE_EXPORT QDeclarativePixmapCache

    98 {

    99     Q_DECLARE_TR_FUNCTIONS(QDeclarativePixmapCache)

   100 public:

   101     static QDeclarativePixmapReply::Status get(const QUrl& url, QPixmap *pixmap, QString *errorString, QSize *impsize=0, bool async=false, int req_width=0, int req_height=0);

   102     static QDeclarativePixmapReply *request(QDeclarativeEngine *, const QUrl& url, int req_width=0, int req_height=0);

   103     static void cancel(const QUrl& url, QObject *obj);

   104     static int pendingRequests();

   105 };

   106 

   107 

   108 

   109 QT_END_NAMESPACE

   110 

   111 QT_END_HEADER

   112 

   113 #endif // QDECLARATIVEPIXMAPCACHE_H