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Diffstat (limited to 'chromium/third_party/WebKit/Source/core/rendering/ScrollAlignment.h')
-rw-r--r-- | chromium/third_party/WebKit/Source/core/rendering/ScrollAlignment.h | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/chromium/third_party/WebKit/Source/core/rendering/ScrollAlignment.h b/chromium/third_party/WebKit/Source/core/rendering/ScrollAlignment.h new file mode 100644 index 00000000000..f22b1d9d6a8 --- /dev/null +++ b/chromium/third_party/WebKit/Source/core/rendering/ScrollAlignment.h @@ -0,0 +1,83 @@ +/* + * Copyright (C) 2003, 2009 Apple Inc. All rights reserved. + * + * Portions are Copyright (C) 1998 Netscape Communications Corporation. + * + * Other contributors: + * Robert O'Callahan <roc+@cs.cmu.edu> + * David Baron <dbaron@fas.harvard.edu> + * Christian Biesinger <cbiesinger@web.de> + * Randall Jesup <rjesup@wgate.com> + * Roland Mainz <roland.mainz@informatik.med.uni-giessen.de> + * Josh Soref <timeless@mac.com> + * Boris Zbarsky <bzbarsky@mit.edu> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + * + * Alternatively, the contents of this file may be used under the terms + * of either the Mozilla Public License Version 1.1, found at + * http://www.mozilla.org/MPL/ (the "MPL") or the GNU General Public + * License Version 2.0, found at http://www.fsf.org/copyleft/gpl.html + * (the "GPL"), in which case the provisions of the MPL or the GPL are + * applicable instead of those above. If you wish to allow use of your + * version of this file only under the terms of one of those two + * licenses (the MPL or the GPL) and not to allow others to use your + * version of this file under the LGPL, indicate your decision by + * deletingthe provisions above and replace them with the notice and + * other provisions required by the MPL or the GPL, as the case may be. + * If you do not delete the provisions above, a recipient may use your + * version of this file under any of the LGPL, the MPL or the GPL. + */ + +#ifndef ScrollAlignment_h +#define ScrollAlignment_h + +namespace WebCore { + +enum ScrollAlignmentBehavior { + ScrollAlignmentNoScroll, + ScrollAlignmentCenter, + ScrollAlignmentTop, + ScrollAlignmentBottom, + ScrollAlignmentLeft, + ScrollAlignmentRight, + ScrollAlignmentClosestEdge +}; + +class LayoutRect; + +struct ScrollAlignment { + static ScrollAlignmentBehavior getVisibleBehavior(const ScrollAlignment& s) { return s.m_rectVisible; } + static ScrollAlignmentBehavior getPartialBehavior(const ScrollAlignment& s) { return s.m_rectPartial; } + static ScrollAlignmentBehavior getHiddenBehavior(const ScrollAlignment& s) { return s.m_rectHidden; } + + // FIXME: This function should probably go somewhere else but where? + static LayoutRect getRectToExpose(const LayoutRect& visibleRect, const LayoutRect& exposeRect, const ScrollAlignment& alignX, const ScrollAlignment& alignY); + + static const ScrollAlignment alignCenterIfNeeded; + static const ScrollAlignment alignToEdgeIfNeeded; + static const ScrollAlignment alignCenterAlways; + static const ScrollAlignment alignTopAlways; + static const ScrollAlignment alignBottomAlways; + + ScrollAlignmentBehavior m_rectVisible; + ScrollAlignmentBehavior m_rectHidden; + ScrollAlignmentBehavior m_rectPartial; +}; + + +}; // namespace WebCore + +#endif // ScrollAlignment_h |