1 /*

     2 * Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

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

     6 * which accompanies this distribution, and is available

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

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:   Implements page scrolling functionality

    15 *

    16 */

    17 

    18 

    19 

    20 #ifndef WEBPAGEZOOMHANDLER_H

    21 #define WEBPAGEZOOMHANDLER_H

    22 

    23 //  INCLUDES

    24 #include <e32base.h>

    25 #include <coedef.h>

    26 #include <w32std.h>

    27 

    28 // MACROS

    29 

    30 // FORWARD DECLARATIONS

    31 class WebView;

    32 class WebFrame;

    33 class CAknVolumePopup;

    34 

    35 // CLASS DECLARATION

    36 class WebPageZoomHandler: public CBase, MCoeControlObserver {

    37 public:  // Constructor and destructor

    38 

    39     /**

    40      * Two-phased constructor.

    41      **/

    42     static WebPageZoomHandler* NewL(WebView& webView);

    43 

    44     /**

    45      * Destructor.

    46      **/

    47     virtual ~WebPageZoomHandler();

    48 

    49 private:  // Constructors

    50 

    51     /**

    52      * C++ default constructor.

    53      **/

    54     WebPageZoomHandler(WebView& webView);

    55 

    56     /**

    57      * By default Symbian 2nd phase constructor is private.

    58      **/

    59     void constructL();

    60 public: 

    61     /**

    62     *  From MCoeControlObserver

    63      **/

    64 

    65     virtual void HandleControlEventL(CCoeControl* aControl,TCoeEvent aEventType);

    66 

    67 

    68 public: // New functions

    69 

    70     /**

    71      * @since 5.0

    72      * @param

    73      * @return

    74      **/

    75     bool handlePageZoomingL(const TPointerEvent& pointerEvent);

    76 

    77     /**

    78      * @since 5.0

    79      * @param

    80      * @return

    81      **/

    82     void  showZoomSliderL();

    83 

    84     /**

    85      * @since 5.0

    86      * @param

    87      * @return

    88      **/

    89     void  hideZoomSliderL();

    90 

    91     /**

    92      * @since 5.0

    93      * @param

    94      * @return

    95      **/

    96 

    97     void setZoomLevel(TInt zoomLevel);

    98 

    99     /**

   100      * @since 5.0

   101      * @param

   102      * @return

   103      **/

   104     void updateBitmap();

   105 

   106     /**

   107      * @since 5.0

   108      * @param

   109      * @return

   110      **/

   111     WebView* view();

   112 

   113     /**

   114      * @since 5.0

   115      * @param

   116      * @return

   117      **/

   118     bool isActive();

   119 

   120 

   121     int stepSize();

   122 

   123 private:   

   124 

   125     // Pointer to owning view

   126 

   127     WebView*         m_webView;     // not owned

   128 

   129     CAknVolumePopup* m_zoomSlider;  // owned

   130 

   131     CPeriodic*       m_bitmapUpdateTimer; // owned 

   132 

   133     int              m_stepSize;

   134 };

   135 

   136 #endif      //WEBPAGEZOOMHANDLER_H

   137 

   138 // End of File