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      1 /*
      2  * Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies)
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  * 1. Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  * 2. Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
     17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #ifndef QWebPageClient_h
     27 #define QWebPageClient_h
     28 
     29 #ifndef QT_NO_CURSOR
     30 #include <QCursor>
     31 #endif
     32 
     33 #include <QRect>
     34 
     35 QT_BEGIN_NAMESPACE
     36 class QGraphicsItem;
     37 class QStyle;
     38 QT_END_NAMESPACE
     39 
     40 class QWebPageClient {
     41 public:
     42     virtual ~QWebPageClient() { }
     43 
     44     virtual void scroll(int dx, int dy, const QRect&) = 0;
     45     virtual void update(const QRect&) = 0;
     46     virtual void setInputMethodEnabled(bool enable) = 0;
     47     virtual bool inputMethodEnabled() const = 0;
     48 #if USE(ACCELERATED_COMPOSITING)
     49     // this gets called when we start/stop compositing.
     50     virtual void setRootGraphicsLayer(QGraphicsItem* layer) {}
     51 
     52     // this gets called when the compositor wants us to sync the layers
     53     // if scheduleSync is true, we schedule a sync ourselves. otherwise,
     54     // we wait for the next update and sync the layers then.
     55     virtual void markForSync(bool scheduleSync = false) {}
     56 #endif
     57 
     58 #if QT_VERSION >= 0x040600
     59     virtual void setInputMethodHint(Qt::InputMethodHint hint, bool enable) = 0;
     60 #endif
     61     inline void resetCursor()
     62     {
     63 #ifndef QT_NO_CURSOR
     64         if (!cursor().bitmap() && cursor().shape() == m_lastCursor.shape())
     65             return;
     66         updateCursor(m_lastCursor);
     67 #endif
     68     }
     69 
     70     inline void setCursor(const QCursor& cursor)
     71     {
     72 #ifndef QT_NO_CURSOR
     73         m_lastCursor = cursor;
     74         if (!cursor.bitmap() && cursor.shape() == this->cursor().shape())
     75             return;
     76         updateCursor(cursor);
     77 #endif
     78     }
     79 
     80     virtual QPalette palette() const = 0;
     81     virtual int screenNumber() const = 0;
     82     virtual QWidget* ownerWidget() const = 0;
     83 
     84     virtual QObject* pluginParent() const = 0;
     85 
     86     virtual QStyle* style() const = 0;
     87 
     88 protected:
     89 #ifndef QT_NO_CURSOR
     90     virtual QCursor cursor() const = 0;
     91     virtual void updateCursor(const QCursor& cursor) = 0;
     92 #endif
     93 
     94 private:
     95 #ifndef QT_NO_CURSOR
     96     QCursor m_lastCursor;
     97 #endif
     98 };
     99 
    100 #endif
    101