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| 1 /* | 1 /* |
| 2 * Copyright (C) 2012 Apple Inc. All rights reserved. | 2 * Copyright (C) 2012 Apple Inc. All rights reserved. |
| 3 * | 3 * |
| 4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
| 5 * modification, are permitted provided that the following conditions | 5 * modification, are permitted provided that the following conditions |
| 6 * are met: | 6 * are met: |
| 7 * 1. Redistributions of source code must retain the above copyright | 7 * 1. Redistributions of source code must retain the above copyright |
| 8 * notice, this list of conditions and the following disclaimer. | 8 * notice, this list of conditions and the following disclaimer. |
| 9 * 2. Redistributions in binary form must reproduce the above copyright | 9 * 2. Redistributions in binary form must reproduce the above copyright |
| 10 * notice, this list of conditions and the following disclaimer in the | 10 * notice, this list of conditions and the following disclaimer in the |
| 11 * documentation and/or other materials provided with the distribution. | 11 * documentation and/or other materials provided with the distribution. |
| 12 * | 12 * |
| 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' | 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' |
| 14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, | 14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| 15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | 15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS | 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS |
| 17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | 17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | 18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | 19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | 20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | 21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF | 22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
| 23 * THE POSSIBILITY OF SUCH DAMAGE. | 23 * THE POSSIBILITY OF SUCH DAMAGE. |
| 24 */ | 24 */ |
| 25 | 25 |
| 26 #include "config.h" | 26 #include "config.h" |
| 27 #include "ScrollingConstraints.h" | 27 #include "core/page/scrolling/ScrollingConstraints.h" |
| 28 | 28 |
| 29 namespace WebCore { | 29 namespace WebCore { |
| 30 | 30 |
| 31 FloatPoint FixedPositionViewportConstraints::layerPositionForViewportRect(const
FloatRect& viewportRect) const | 31 FloatPoint FixedPositionViewportConstraints::layerPositionForViewportRect(const
FloatRect& viewportRect) const |
| 32 { | 32 { |
| 33 FloatSize offset; | 33 FloatSize offset; |
| 34 | 34 |
| 35 if (hasAnchorEdge(AnchorEdgeLeft)) | 35 if (hasAnchorEdge(AnchorEdgeLeft)) |
| 36 offset.setWidth(viewportRect.x() - m_viewportRectAtLastLayout.x()); | 36 offset.setWidth(viewportRect.x() - m_viewportRectAtLastLayout.x()); |
| 37 else if (hasAnchorEdge(AnchorEdgeRight)) | 37 else if (hasAnchorEdge(AnchorEdgeRight)) |
| (...skipping 54 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 92 return boxRect.location() - m_absoluteStickyBoxRect.location(); | 92 return boxRect.location() - m_absoluteStickyBoxRect.location(); |
| 93 } | 93 } |
| 94 | 94 |
| 95 FloatPoint StickyPositionViewportConstraints::layerPositionForViewportRect(const
FloatRect& viewportRect) const | 95 FloatPoint StickyPositionViewportConstraints::layerPositionForViewportRect(const
FloatRect& viewportRect) const |
| 96 { | 96 { |
| 97 FloatSize offset = computeStickyOffset(viewportRect); | 97 FloatSize offset = computeStickyOffset(viewportRect); |
| 98 return m_layerPositionAtLastLayout + offset - m_stickyOffsetAtLastLayout; | 98 return m_layerPositionAtLastLayout + offset - m_stickyOffsetAtLastLayout; |
| 99 } | 99 } |
| 100 | 100 |
| 101 } // namespace WebCore | 101 } // namespace WebCore |
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