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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 #if USE(ACCELERATED_COMPOSITING)
     34 #include <GraphicsLayer.h>
     35 #endif
     36 
     37 #include <QPalette>
     38 #include <QRect>
     39 
     40 QT_BEGIN_NAMESPACE
     41 class QStyle;
     42 QT_END_NAMESPACE
     43 
     44 class QWebPageClient {
     45 public:
     46     virtual ~QWebPageClient() { }
     47 
     48     virtual bool isQWidgetClient() const { return false; }
     49 
     50     virtual void scroll(int dx, int dy, const QRect&) = 0;
     51     virtual void update(const QRect&) = 0;
     52     virtual void setInputMethodEnabled(bool enable) = 0;
     53     virtual bool inputMethodEnabled() const = 0;
     54 #if USE(ACCELERATED_COMPOSITING)
     55     virtual void setRootGraphicsLayer(WebCore::PlatformLayer* layer) { }
     56 
     57     // this gets called when the compositor wants us to sync the layers
     58     // if scheduleSync is true, we schedule a sync ourselves. otherwise,
     59     // we wait for the next update and sync the layers then.
     60     virtual void markForSync(bool scheduleSync = false) {}
     61     virtual bool allowsAcceleratedCompositing() const { return false; }
     62 #endif
     63 
     64     virtual void setInputMethodHints(Qt::InputMethodHints hint) = 0;
     65 
     66 #ifndef QT_NO_CURSOR
     67     inline void resetCursor()
     68     {
     69         if (!cursor().bitmap() && cursor().shape() == m_lastCursor.shape())
     70             return;
     71         updateCursor(m_lastCursor);
     72     }
     73 
     74     inline void setCursor(const QCursor& cursor)
     75     {
     76         m_lastCursor = cursor;
     77         if (!cursor.bitmap() && cursor.shape() == this->cursor().shape())
     78             return;
     79         updateCursor(cursor);
     80     }
     81 #endif
     82 
     83     virtual QPalette palette() const = 0;
     84     virtual int screenNumber() const = 0;
     85     virtual QWidget* ownerWidget() const = 0;
     86     virtual QRect geometryRelativeToOwnerWidget() const = 0;
     87 
     88     virtual QObject* pluginParent() const = 0;
     89 
     90     virtual QStyle* style() const = 0;
     91 
     92     virtual QRectF graphicsItemVisibleRect() const { return QRectF(); }
     93 
     94     virtual bool viewResizesToContentsEnabled() const = 0;
     95 
     96     virtual QRectF windowRect() const = 0;
     97 
     98 protected:
     99 #ifndef QT_NO_CURSOR
    100     virtual QCursor cursor() const = 0;
    101     virtual void updateCursor(const QCursor& cursor) = 0;
    102 #endif
    103 
    104 private:
    105 #ifndef QT_NO_CURSOR
    106     QCursor m_lastCursor;
    107 #endif
    108 };
    109 
    110 #endif
    111