Index: Source/core/rendering/ScrollBehavior.cpp |
diff --git a/Source/core/rendering/ScrollBehavior.cpp b/Source/core/rendering/ScrollBehavior.cpp |
deleted file mode 100644 |
index d331f1dc07b361eb530eb97758baab2a8e0c3bff..0000000000000000000000000000000000000000 |
--- a/Source/core/rendering/ScrollBehavior.cpp |
+++ /dev/null |
@@ -1,146 +0,0 @@ |
-/* |
- * Copyright (C) 2006, 2007, 2008 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. |
- */ |
- |
-#include "config.h" |
-#include "core/rendering/ScrollBehavior.h" |
- |
-#include "platform/geometry/LayoutRect.h" |
- |
-namespace WebCore { |
- |
-const ScrollAlignment ScrollAlignment::alignCenterIfNeeded = { noScroll, alignCenter, alignToClosestEdge }; |
-const ScrollAlignment ScrollAlignment::alignToEdgeIfNeeded = { noScroll, alignToClosestEdge, alignToClosestEdge }; |
-const ScrollAlignment ScrollAlignment::alignCenterAlways = { alignCenter, alignCenter, alignCenter }; |
-const ScrollAlignment ScrollAlignment::alignTopAlways = { alignTop, alignTop, alignTop }; |
-const ScrollAlignment ScrollAlignment::alignBottomAlways = { alignBottom, alignBottom, alignBottom }; |
- |
-#define MIN_INTERSECT_FOR_REVEAL 32 |
- |
-LayoutRect ScrollAlignment::getRectToExpose(const LayoutRect& visibleRect, const LayoutRect& exposeRect, const ScrollAlignment& alignX, const ScrollAlignment& alignY) |
-{ |
- // Determine the appropriate X behavior. |
- ScrollBehavior scrollX; |
- LayoutRect exposeRectX(exposeRect.x(), visibleRect.y(), exposeRect.width(), visibleRect.height()); |
- LayoutUnit intersectWidth = intersection(visibleRect, exposeRectX).width(); |
- if (intersectWidth == exposeRect.width() || intersectWidth >= MIN_INTERSECT_FOR_REVEAL) { |
- // If the rectangle is fully visible, use the specified visible behavior. |
- // If the rectangle is partially visible, but over a certain threshold, |
- // then treat it as fully visible to avoid unnecessary horizontal scrolling |
- scrollX = getVisibleBehavior(alignX); |
- } else if (intersectWidth == visibleRect.width()) { |
- // If the rect is bigger than the visible area, don't bother trying to center. Other alignments will work. |
- scrollX = getVisibleBehavior(alignX); |
- if (scrollX == alignCenter) |
- scrollX = noScroll; |
- } else if (intersectWidth > 0) { |
- // If the rectangle is partially visible, but not above the minimum threshold, use the specified partial behavior |
- scrollX = getPartialBehavior(alignX); |
- } else { |
- scrollX = getHiddenBehavior(alignX); |
- } |
- |
- if (scrollX == alignToClosestEdge) { |
- // Closest edge is the right in two cases: |
- // (1) exposeRect to the right of and smaller than visibleRect |
- // (2) exposeRect to the left of and larger than visibleRect |
- if ((exposeRect.maxX() > visibleRect.maxX() && exposeRect.width() < visibleRect.width()) |
- || (exposeRect.maxX() < visibleRect.maxX() && exposeRect.width() > visibleRect.width())) { |
- scrollX = alignRight; |
- } |
- } |
- |
- // Given the X behavior, compute the X coordinate. |
- LayoutUnit x; |
- if (scrollX == noScroll) |
- x = visibleRect.x(); |
- else if (scrollX == alignRight) |
- x = exposeRect.maxX() - visibleRect.width(); |
- else if (scrollX == alignCenter) |
- x = exposeRect.x() + (exposeRect.width() - visibleRect.width()) / 2; |
- else |
- x = exposeRect.x(); |
- |
- // Determine the appropriate Y behavior. |
- ScrollBehavior scrollY; |
- LayoutRect exposeRectY(visibleRect.x(), exposeRect.y(), visibleRect.width(), exposeRect.height()); |
- LayoutUnit intersectHeight = intersection(visibleRect, exposeRectY).height(); |
- if (intersectHeight == exposeRect.height()) { |
- // If the rectangle is fully visible, use the specified visible behavior. |
- scrollY = getVisibleBehavior(alignY); |
- } else if (intersectHeight == visibleRect.height()) { |
- // If the rect is bigger than the visible area, don't bother trying to center. Other alignments will work. |
- scrollY = getVisibleBehavior(alignY); |
- if (scrollY == alignCenter) |
- scrollY = noScroll; |
- } else if (intersectHeight > 0) { |
- // If the rectangle is partially visible, use the specified partial behavior |
- scrollY = getPartialBehavior(alignY); |
- } else { |
- scrollY = getHiddenBehavior(alignY); |
- } |
- |
- if (scrollY == alignToClosestEdge) { |
- // Closest edge is the bottom in two cases: |
- // (1) exposeRect below and smaller than visibleRect |
- // (2) exposeRect above and larger than visibleRect |
- if ((exposeRect.maxY() > visibleRect.maxY() && exposeRect.height() < visibleRect.height()) |
- || (exposeRect.maxY() < visibleRect.maxY() && exposeRect.height() > visibleRect.height())) { |
- scrollY = alignBottom; |
- } |
- } |
- |
- // Given the Y behavior, compute the Y coordinate. |
- LayoutUnit y; |
- if (scrollY == noScroll) |
- y = visibleRect.y(); |
- else if (scrollY == alignBottom) |
- y = exposeRect.maxY() - visibleRect.height(); |
- else if (scrollY == alignCenter) |
- y = exposeRect.y() + (exposeRect.height() - visibleRect.height()) / 2; |
- else |
- y = exposeRect.y(); |
- |
- return LayoutRect(LayoutPoint(x, y), visibleRect.size()); |
-} |
- |
-}; // namespace WebCore |