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 "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:  NVG Decoder header file

    15  *

    16 */

    17 

    18 #ifndef NVGFITTOVIEWBOX_H

    19 #define NVGFITTOVIEWBOX_H

    20 

    21  

    22 #include <e32std.h>

    23 #include <e32base.h>

    24 #include <VG/openvg.h>

    25 #include <nvg.h>

    26 

    27 

    28 class CNvgFitToViewBoxImpl:  public CBase

    29     {

    30 private:

    31     CNvgFitToViewBoxImpl();

    32      

    33      /**

    34           * @Purpose: 2 Phase Constructor

    35           * @Version

    36           * @parameter: None

    37           * @return: None

    38      */

    39      void ConstructL();

    40      

    41      /**

    42           * @Purpose: Destructor

    43           * @Version

    44           * @parameter: None

    45           * @return: None

    46      */

    47     public:

    48     

    49     /**

    50          * @Purpose: 2 Phase Constructor

    51          * @Version

    52          * @parameter: None

    53          * @return: None

    54     */

    55     static CNvgFitToViewBoxImpl*    NewL();

    56     

    57     /**

    58          * @Purpose: 2 Phase Constructor

    59          * @Version

    60          * @parameter: None

    61          * @return: None

    62     */

    63     static CNvgFitToViewBoxImpl*    NewLC();

    64     

    65     /**

    66          * @Purpose: Constructor

    67          * @Version

    68          * @parameter: None

    69          * @return: None

    70     */

    71  

    72     virtual ~CNvgFitToViewBoxImpl();

    73     

    74      /**

    75          * @Purpose: Setter function for viewbox    

    76          * @Version:    

    77          * @parameter:  TRect which will be the viewbox for the content

    78          * @return: None

    79     */

    80     inline void SetViewBox(TReal avbX, TReal avbY,TReal avbW,TReal avbH);

    81     

    82     /**

    83          * @Purpose: Setter function for Aligning

    84          * @Version

    85          * @parameter: Indicates to fit the viewport in the viewbox

    86          * @return: None

    87     */

    88     inline void SetAlign(TNvgAlignStatusType aAlignStatus);

    89     

    90     /**

    91          * @Purpose: Setter function for MeetorSlice

    92          * @Version

    93          * @parameter: Indicates whether to streach or slice the content

    94          * @return: None

    95     */

    96     inline void SetScaling(TNvgMeetOrSliceType aMeetSlice);    

    97     

    98     /**

    99          * @Purpose: Setter function for Transformation matrix

   100          * @Version

   101          * @parameter: The first two rows of the transformation matrix

   102          * @return: None

   103     */

   104     inline void SetTransform(TReal aM00,TReal aM01,TReal aM02,TReal aM10,TReal aM11,TReal aM12);

   105     

   106     

   107     /**

   108          * @Purpose: Update the transformation matrix for Translating the 

   109                      Contnet

   110          * @Version

   111          * @parameter: Translation components by aX, aY 

   112                        coordinates

   113          * @return: None

   114     */

   115     inline void Translate(TReal aX, TReal aY);

   116     

   117     /**

   118          * @Purpose: Update the transformation matrix for 

   119                      Scaling the Contnet

   120          * @Version

   121          * @parameter: Scaling factors Sx, Sy

   122          * @return: None

   123     */

   124     inline void Scale(TReal aX, TReal aY);

   125     

   126    /**

   127          * @Purpose: Calculating the transfomation matrix to 

   128                      carry out the viewport to viewbox 

   129                      transformation

   130          * @Version

   131          * @parameter: The viewport which is to be transformed

   132                        If viewbox is not defined, set the size of the viewbox 

   133          * @return: None

   134     */

   135     void SetWindowViewportTrans( TRect aViewPort, TSize aSize );

   136     

   137         

   138     void Concatenate(TReal aMatrix[]);

   139         

   140     void Concatenate(TReal aM00, TReal aM01, TReal aM02, TReal aM10, TReal aM11, TReal aM12);

   141 

   142 public:        

   143     // viewbox to viewport transformation matrix

   144     TReal iM00;

   145     TReal iM01;

   146     TReal iM02;

   147     TReal iM10;

   148     TReal iM11;

   149     TReal iM12;

   150     

   151     //The viewBox onto which the content will be drawn

   152     TReal   ivbX;

   153     TReal   ivbY;

   154     TReal   ivbW;

   155     TReal   ivbH;

   156     

   157     //Indicate that the content has a viewbox defined

   158     TBool iViewBoxDefined;

   159     

   160     //Define how to fit the content into the viewport

   161     TNvgAlignStatusType iAlign;

   162     

   163     //Weather to streach or clip the content to fit it into the viewbox       |

   164     TNvgMeetOrSliceType iMeetSlice;

   165     };

   166     

   167 #include "nvgfittoviewbox.inl"

   168 #endif

   169 //----------------------------EndOfFile-----------------------