1 /*

     2  * Copyright (C) 2007 Apple Inc.  All rights reserved.

     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 WebScrollBar_h

    27 #define WebScrollBar_h

    28 

    29 #include "IWebScrollBarDelegatePrivate.h"

    30 #include "IWebScrollBarPrivate.h"

    31 

    32 #include <wtf/RefPtr.h>

    33 #include <wtf/OwnPtr.h>

    34 

    35 #pragma warning(push, 0)

    36 #include <WebCore/COMPtr.h>

    37 #include <WebCore/ScrollBar.h>

    38 #pragma warning(pop)

    39 

    40 namespace WebCore {

    41 class PlatformScrollbar;

    42 }

    43 

    44 using namespace WebCore;

    45 

    46 class WebScrollBar : public IWebScrollBarPrivate, ScrollbarClient

    47 {

    48 public:

    49     static WebScrollBar* createInstance();

    50 protected:

    51     WebScrollBar();

    52     ~WebScrollBar();

    53 

    54 public:

    55     // IUnknown

    56     virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID riid, void** ppvObject);

    57     virtual ULONG STDMETHODCALLTYPE AddRef(void);

    58     virtual ULONG STDMETHODCALLTYPE Release(void);

    59 

    60     // IWebScrollBarPrivate

    61     virtual HRESULT STDMETHODCALLTYPE init( 

    62         /* [in] */ IWebScrollBarDelegatePrivate* delegate,

    63         /* [in] */ OLE_HANDLE containingWindow,

    64         /* [in] */ WebScrollBarOrientation orientation,

    65         /* [in] */ WebScrollBarControlSize controlSize);

    66     

    67     virtual HRESULT STDMETHODCALLTYPE setEnabled( 

    68         /* [in] */ BOOL enabled);

    69     

    70     virtual HRESULT STDMETHODCALLTYPE setSteps( 

    71         /* [in] */ int lineStep,

    72         /* [in] */ int pageStep);

    73     

    74     virtual HRESULT STDMETHODCALLTYPE setProportion( 

    75         /* [in] */ int visibleSize,

    76         /* [in] */ int totalSize);

    77     

    78     virtual HRESULT STDMETHODCALLTYPE setRect( 

    79         /* [in] */ RECT bounds);

    80     

    81     virtual HRESULT STDMETHODCALLTYPE setValue( 

    82         /* [in] */ int value);

    83     

    84     virtual HRESULT STDMETHODCALLTYPE value( 

    85         /* [retval][out] */ int* value);

    86    

    87     virtual HRESULT STDMETHODCALLTYPE paint( 

    88         /* [in] */ HDC dc,

    89         /* [in] */ RECT damageRect);

    90     

    91     virtual HRESULT STDMETHODCALLTYPE frameGeometry( 

    92         /* [retval][out] */ RECT* bounds);

    93     

    94     virtual HRESULT STDMETHODCALLTYPE width( 

    95         /* [retval][out] */ int* w);

    96     

    97     virtual HRESULT STDMETHODCALLTYPE height( 

    98         /* [retval][out] */ int* h);

    99     

   100     virtual HRESULT STDMETHODCALLTYPE requestedWidth( 

   101         /* [retval][out] */ int* w);

   102     

   103     virtual HRESULT STDMETHODCALLTYPE requestedHeight( 

   104         /* [retval][out] */ int* h);

   105 

   106     virtual HRESULT STDMETHODCALLTYPE handleMouseEvent( 

   107         /* [in] */ OLE_HANDLE window,

   108         /* [in] */ UINT msg,

   109         /* [in] */ WPARAM wParam,

   110         /* [in] */ LPARAM lParam);

   111     

   112     virtual HRESULT STDMETHODCALLTYPE scroll( 

   113         /* [in] */ WebScrollDirection direction,

   114         /* [in] */ WebScrollGranularity granularity,

   115         /* [in] */ float multiplier);

   116 

   117 protected:

   118     // ScrollbarClient

   119     virtual void valueChanged(Scrollbar*);

   120 

   121     // Used to obtain a window clip rect.

   122     virtual IntRect windowClipRect() const;

   123 

   124     ULONG m_refCount;

   125     RefPtr<WebCore::PlatformScrollbar> m_scrollBar;

   126     COMPtr<IWebScrollBarDelegatePrivate> m_delegate;

   127 };

   128 

   129 #endif