1 /*

     2  * Copyright (C) 2006 Apple Computer, 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 ScrollTypes_h

    27 #define ScrollTypes_h

    28 

    29 namespace WebCore {

    30 

    31     enum ScrollDirection {

    32         ScrollUp,

    33         ScrollDown,

    34         ScrollLeft,

    35         ScrollRight

    36     };

    37 

    38     enum ScrollGranularity {

    39         ScrollByLine,

    40         ScrollByPage,

    41         ScrollByDocument,

    42         ScrollByPixel

    43     };

    44 

    45     enum ScrollbarOrientation { HorizontalScrollbar, VerticalScrollbar };

    46 

    47     enum ScrollbarMode { ScrollbarAuto, ScrollbarAlwaysOff, ScrollbarAlwaysOn };

    48 

    49     enum ScrollbarControlSize { RegularScrollbar, SmallScrollbar };

    50 

    51     typedef unsigned ScrollbarControlState;

    52 

    53     enum ScrollbarControlStateMask {

    54         ActiveScrollbarState = 1,

    55         EnabledScrollbarState = 1 << 1,

    56         PressedScrollbarState = 1 << 2,

    57     };

    58 

    59     enum ScrollbarPart {

    60         NoPart = 0,

    61         BackButtonStartPart = 1,

    62         ForwardButtonStartPart = 1 << 1,

    63         BackTrackPart = 1 << 2,

    64         ThumbPart = 1 << 3,

    65         ForwardTrackPart = 1 << 4,

    66         BackButtonEndPart = 1 << 5,

    67         ForwardButtonEndPart = 1 << 6,

    68         ScrollbarBGPart = 1 << 7,

    69         TrackBGPart = 1 << 8,

    70         AllParts = 0xffffffff,

    71     };

    72 

    73     enum ScrollbarButtonsPlacement {

    74         ScrollbarButtonsNone,

    75         ScrollbarButtonsSingle,

    76         ScrollbarButtonsDoubleStart,

    77         ScrollbarButtonsDoubleEnd,

    78         ScrollbarButtonsDoubleBoth

    79     };

    80     

    81     typedef unsigned ScrollbarControlPartMask;

    82 

    83 }

    84 

    85 #endif