/*

* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:   

*

*/

#ifndef WEBSCROLLBARDRAWER_H

#define WEBSCROLLBARDRAWER_H

#include <e32base.h>

#include <coedef.h>

#include <coecntrl.h>

#include <w32std.h>

#include <gdi.h>

class WebView;

class CWebSprite;

class WebScrollbarDrawer: public CBase

{

  public:

    static WebScrollbarDrawer* NewL();

    virtual ~WebScrollbarDrawer();

    void drawScrollbar(WebView* view, TPoint& scrollPos);

    void drawScrollbar(WebView* view);

    int  getTransparency() const {return m_scrollBarTransparency;}

    void fadeScrollbar(TInt delay);

    void fadeScrollbar();

    void fade();   

    int fadeTime();

    void redrawScrollbar();

  private:

    WebScrollbarDrawer();

    void ConstructL(); 

    TInt InitScrollbar(WebView* view);

    TInt SetupBitmaps();

    void drawThumbMask(CBitmapContext* gc, TRect& rect);

    void drawThumb(CBitmapContext* gc, TRect& rect);

    TInt createBitmap(CFbsBitmap*& bm, CFbsBitGc*& gc, 

    	               CFbsBitmapDevice*& dev, TRect& rect);

    void deleteBitmap(CFbsBitmap*& bm, CFbsBitGc*& gc, 

    	              CFbsBitmapDevice*& dev);

    void removeBitmaps();

    void clearSprites();

    void calculateBitmapRects();

    TBool canRedraw();

  private:

    WebView*              m_webView;

    CWebSprite*           m_spriteV;

    CWebSprite*           m_spriteH;

    TRect                 m_rect;

    int                   m_scrollBarTransparency;

    CPeriodic*            m_scrollBarFader;

    CFbsBitmap*           m_scrollBarV;

    CFbsBitGc*            m_gcV;

    CFbsBitmapDevice*     m_devV;

    CFbsBitmap*           m_scrollBarVMask;

    CFbsBitGc*            m_gcVMask;

    CFbsBitmapDevice*     m_devVMask;

    CFbsBitmap*           m_scrollBarH;

    CFbsBitGc*            m_gcH;

    CFbsBitmapDevice*     m_devH;

    CFbsBitmap*           m_scrollBarHMask;

    CFbsBitGc*            m_gcHMask;

    CFbsBitmapDevice*     m_devHMask;

    bool                  m_hasVScroll;

    bool                  m_hasHScroll;

    int                   m_scrollBarWidth;

    TRect                 m_rectV;

    TRect                 m_rectVThum;

    TRect                 m_rectH;

    TRect                 m_rectHThum;

    int                   m_docWidth;

    int                   m_displayWidth;

    int                   m_docHeight;

    int                   m_displayHeight;

    float                 m_zoomFactor;

    TRgb                  m_thumColor;

    float                 m_dY;

    float                 m_dX;

};

#endif //WEBSCROLLBARDRAWER_H