1 /*

     2 * Copyright (c) 2009 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:     

    15 *

    16 */

    17 

    18 #ifndef HGVGCONSTANTS_H_

    19 #define HGVGCONSTANTS_H_

    20 

    21 // INCLUDES

    22 #include <e32base.h>

    23 

    24 namespace HgVgConstants

    25     {

    26 

    27     // maximum velocity of the spring (max velocity of view movement)

    28     const TReal KMaxSpringVelocity(300.0f);

    29     

    30     //

    31     const TReal KSpringVelocityToAnimationFactor(20.0f);

    32 

    33 

    34     // maximum quads in coverflow

    35     const TInt KMaxCoversVisible(17);

    36     

    37     // selected item index

    38     const TInt KSelectedItemIndex(8);

    39 

    40     // 

    41     const TReal KMinFlickSpeed(0.5f);

    42 

    43     const TInt KViewScrollingUpdateInterval( 16000 ); // > ~60 fps

    44     

    45     // The amound of pixels one item (virtually) takes on the screen (if you think coverflow as uniform list)

    46     const TReal KRowHeight(1.0f);

    47     const TInt KRowHeightStep(10);

    48     

    49     // PI

    50     const TReal PI(3.1415926535897932f);

    51 

    52     // Spring constant

    53     const TReal KSpringK(35.0f);

    54     

    55     // Spring damping

    56     const TReal KSpringDamping(11.0f);

    57     

    58     // maximum distance from target to snap 

    59     const TReal KPositionSnap(0.02);

    60     

    61     // maximum speed where to snap to item

    62     const TReal KMinSpringVelocity(0.05);

    63     

    64     // how far user must have dragged an item before 

    65     // we move to next item when user has stopped dragging gesture.

    66     const TReal KDragForwardThreshold(0.2f);

    67     

    68     // how many albums it is threoretically possible to go forward/backward

    69     // if the distance of a drag is fullscreen in length

    70     const TReal KItemsToDragOnFullScreenDrag(5.0f);

    71     

    72     // Physics update timestep

    73     const TReal KTimeStep(0.01f); // we update physics 100 fps

    74     

    75     // Width of one quad in 3d space

    76     const TReal KWorldQuadWidth(1);

    77     

    78     // size of default icon in pixels

    79     const TInt KDefaultIconWidth(240);

    80     const TInt KDefaultIconHeight(240);

    81     

    82     // duration of album cover flip selection animation

    83     const TInt KSelectionAnimationDuration(400000); // 0.4 seconds

    84     

    85     // EGL surface bits

    86     const TInt KSurfaceRedBits(8);

    87     const TInt KSurfaceGreenBits(8);

    88     const TInt KSurfaceBlueBits(8);

    89     const TInt KSurfaceAlphaBits(8);

    90     

    91     // used for conversions

    92     const TInt KOneSecondInMicroSeconds(1000000);

    93     // how long a flick gesture can tage before it is interpreted as dragging only

    94     const TInt KMaxFlickDuration(200000); // 2 ms

    95     // how long it user must press to move one index further

    96     const TInt KKeyPressDuration(800000);

    97     // factor used for converting swipe speed to view movement

    98     const TReal KSwipeSpeedFactor(0.4f);

    99     

   100     // Camera rotation factor to use in animation

   101     // when swiping

   102     const TReal KCameraRotationFactor(PI/8.0f);

   103     

   104     // zooming factor to use in animation

   105     const TReal KCameraZoomFactor(0);

   106     

   107     const TInt KLetterPopupSizeX(128);

   108     const TInt KLetterPopupSizeY(128);

   109     const TInt KLetterPopupFontSize(100);

   110     const TReal KMaxLetterPopupOpacity(0.85);

   111         

   112     const TReal KZOffset(1.0f);

   113 

   114     const TInt KMediaWallKeyScrollingUpdateInterval( 50000 );

   115     

   116     

   117     const TInt KGridRowCount(3);

   118     

   119     const TReal KGridFlipAngle(PI * 2);

   120     

   121     const TReal KSpaceBetweenGridItems(0.02f);

   122     

   123     const TReal KDefaultBlurDeviation(4);

   124     }

   125 

   126 #endif /* HGVGCONSTANTS */