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| 1 /* | |
| 2 * Copyright (C) 2012 Apple 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 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 #include "config.h" | |
| 27 #include "core/rendering/RenderRegionSet.h" | |
| 28 | |
| 29 #include "core/rendering/RenderFlowThread.h" | |
| 30 | |
| 31 namespace WebCore { | |
| 32 | |
| 33 RenderRegionSet::RenderRegionSet(Element* element, RenderFlowThread* flowThread) | |
| 34 : RenderRegion(element, flowThread) | |
| 35 { | |
| 36 } | |
| 37 | |
| 38 void RenderRegionSet::expandToEncompassFlowThreadContentsIfNeeded() | |
| 39 { | |
| 40 // Whenever the last region is a set, it always expands its region rect to c
onsume all | |
| 41 // of the flow thread content. This is because it is always capable of gener
ating an | |
| 42 // infinite number of boxes in order to hold all of the remaining content. | |
| 43 LayoutRect rect(flowThreadPortionRect()); | |
| 44 | |
| 45 // Get the offset within the flow thread in its block progression direction.
Then get the | |
| 46 // flow thread's remaining logical height including its overflow and expand
our rect | |
| 47 // to encompass that remaining height and overflow. The idea is that we will
generate | |
| 48 // additional columns and pages to hold that overflow, since people do write
bad | |
| 49 // content like <body style="height:0px"> in multi-column layouts. | |
| 50 bool isHorizontal = flowThread()->isHorizontalWritingMode(); | |
| 51 LayoutUnit logicalTopOffset = isHorizontal ? rect.y() : rect.x(); | |
| 52 LayoutRect layoutRect = flowThread()->layoutOverflowRect(); | |
| 53 LayoutUnit logicalHeightWithOverflow = (isHorizontal ? layoutRect.maxY() : l
ayoutRect.maxX()) - logicalTopOffset; | |
| 54 setFlowThreadPortionRect(LayoutRect(rect.x(), rect.y(), isHorizontal ? rect.
width() : logicalHeightWithOverflow, isHorizontal ? logicalHeightWithOverflow :
rect.height())); | |
| 55 } | |
| 56 | |
| 57 } | |
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Chromium Code Reviews
Issue 267903003:
[New Multicolumn] Remove RenderRegionSet. (Closed)
Base URL: https://chromium.googlesource.com/chromium/blink.git@master