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| 1 /* | |
| 2 * Copyright (C) 2003, 2009 Apple Inc. All rights reserved. | |
| 3 * | |
| 4 * Portions are Copyright (C) 1998 Netscape Communications Corporation. | |
| 5 * | |
| 6 * Other contributors: | |
| 7 * Robert O'Callahan <roc+@cs.cmu.edu> | |
| 8 * David Baron <dbaron@fas.harvard.edu> | |
| 9 * Christian Biesinger <cbiesinger@web.de> | |
| 10 * Randall Jesup <rjesup@wgate.com> | |
| 11 * Roland Mainz <roland.mainz@informatik.med.uni-giessen.de> | |
| 12 * Josh Soref <timeless@mac.com> | |
| 13 * Boris Zbarsky <bzbarsky@mit.edu> | |
| 14 * | |
| 15 * This library is free software; you can redistribute it and/or | |
| 16 * modify it under the terms of the GNU Lesser General Public | |
| 17 * License as published by the Free Software Foundation; either | |
| 18 * version 2.1 of the License, or (at your option) any later version. | |
| 19 * | |
| 20 * This library is distributed in the hope that it will be useful, | |
| 21 * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 23 * Lesser General Public License for more details. | |
| 24 * | |
| 25 * You should have received a copy of the GNU Lesser General Public | |
| 26 * License along with this library; if not, write to the Free Software | |
| 27 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 US
A | |
| 28 * | |
| 29 * Alternatively, the contents of this file may be used under the terms | |
| 30 * of either the Mozilla Public License Version 1.1, found at | |
| 31 * http://www.mozilla.org/MPL/ (the "MPL") or the GNU General Public | |
| 32 * License Version 2.0, found at http://www.fsf.org/copyleft/gpl.html | |
| 33 * (the "GPL"), in which case the provisions of the MPL or the GPL are | |
| 34 * applicable instead of those above. If you wish to allow use of your | |
| 35 * version of this file only under the terms of one of those two | |
| 36 * licenses (the MPL or the GPL) and not to allow others to use your | |
| 37 * version of this file under the LGPL, indicate your decision by | |
| 38 * deletingthe provisions above and replace them with the notice and | |
| 39 * other provisions required by the MPL or the GPL, as the case may be. | |
| 40 * If you do not delete the provisions above, a recipient may use your | |
| 41 * version of this file under any of the LGPL, the MPL or the GPL. | |
| 42 */ | |
| 43 | |
| 44 #ifndef ScrollBehavior_h | |
| 45 #define ScrollBehavior_h | |
| 46 | |
| 47 namespace WebCore { | |
| 48 | |
| 49 enum ScrollBehavior { | |
| 50 noScroll, | |
| 51 alignCenter, | |
| 52 alignTop, | |
| 53 alignBottom, | |
| 54 alignLeft, | |
| 55 alignRight, | |
| 56 alignToClosestEdge | |
| 57 }; | |
| 58 | |
| 59 class LayoutRect; | |
| 60 | |
| 61 struct ScrollAlignment { | |
| 62 static ScrollBehavior getVisibleBehavior(const ScrollAlignment& s) { return
s.m_rectVisible; } | |
| 63 static ScrollBehavior getPartialBehavior(const ScrollAlignment& s) { return
s.m_rectPartial; } | |
| 64 static ScrollBehavior getHiddenBehavior(const ScrollAlignment& s) { return s
.m_rectHidden; } | |
| 65 | |
| 66 // FIXME: This function should probably go somewhere else but where? | |
| 67 static LayoutRect getRectToExpose(const LayoutRect& visibleRect, const Layou
tRect& exposeRect, const ScrollAlignment& alignX, const ScrollAlignment& alignY)
; | |
| 68 | |
| 69 static const ScrollAlignment alignCenterIfNeeded; | |
| 70 static const ScrollAlignment alignToEdgeIfNeeded; | |
| 71 static const ScrollAlignment alignCenterAlways; | |
| 72 static const ScrollAlignment alignTopAlways; | |
| 73 static const ScrollAlignment alignBottomAlways; | |
| 74 | |
| 75 ScrollBehavior m_rectVisible; | |
| 76 ScrollBehavior m_rectHidden; | |
| 77 ScrollBehavior m_rectPartial; | |
| 78 }; | |
| 79 | |
| 80 | |
| 81 }; // namespace WebCore | |
| 82 | |
| 83 #endif // ScrollBehavior_h | |
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