15c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)/* 25c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * Copyright (C) 2011 Adobe Systems Incorporated. All rights reserved. 35c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 45c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * Redistribution and use in source and binary forms, with or without 55c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * modification, are permitted provided that the following conditions 65c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * are met: 75c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 85c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 1. Redistributions of source code must retain the above 95c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * copyright notice, this list of conditions and the following 105c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * disclaimer. 115c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 2. Redistributions in binary form must reproduce the above 125c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * copyright notice, this list of conditions and the following 135c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * disclaimer in the documentation and/or other materials 145c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * provided with the distribution. 1502772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch * 165c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER "AS IS" AND ANY 175c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 185c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 195c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE 205c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, 215c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 225c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 235c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 245c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR 255c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 265c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 275c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * SUCH DAMAGE. 285c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) */ 295c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 305c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#include "config.h" 315c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 3253e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles)#include "core/rendering/RenderFlowThread.h" 3353e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) 3453e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles)#include "core/dom/Node.h" 3553e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles)#include "core/rendering/FlowThreadController.h" 3653e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles)#include "core/rendering/HitTestRequest.h" 3753e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles)#include "core/rendering/HitTestResult.h" 3853e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles)#include "core/rendering/PaintInfo.h" 3953e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles)#include "core/rendering/RenderLayer.h" 40197021e6b966cfb06891637935ef33fff06433d1Ben Murdoch#include "core/rendering/RenderMultiColumnSet.h" 4153e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles)#include "core/rendering/RenderView.h" 421e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles)#include "platform/PODIntervalTree.h" 43bfe3590b1806e3ff18f46ee3af5d4b83078f305aTorne (Richard Coles)#include "platform/geometry/TransformState.h" 445c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 45c1847b1379d12d0e05df27436bf19a9b1bf12deaTorne (Richard Coles)namespace blink { 465c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 4753e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles)RenderFlowThread::RenderFlowThread() 488abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) : RenderBlockFlow(0) 495c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) , m_regionsInvalidated(false) 505c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) , m_regionsHaveUniformLogicalHeight(true) 51926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) , m_pageLogicalSizeChanged(false) 525c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles){ 53926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) setFlowThreadState(InsideOutOfFlowThread); 545c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)} 555c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 56197021e6b966cfb06891637935ef33fff06433d1Ben Murdochvoid RenderFlowThread::removeRegionFromThread(RenderMultiColumnSet* columnSet) 575c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles){ 58197021e6b966cfb06891637935ef33fff06433d1Ben Murdoch ASSERT(columnSet); 59197021e6b966cfb06891637935ef33fff06433d1Ben Murdoch m_multiColumnSetList.remove(columnSet); 60926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles)} 61926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) 62926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles)void RenderFlowThread::invalidateRegions() 63926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles){ 64926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) if (m_regionsInvalidated) { 65926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) ASSERT(selfNeedsLayout()); 66926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) return; 67926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) } 68926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) 695d92fedcae5e801a8b224de090094f2d9df0b54aTorne (Richard Coles) setNeedsLayoutAndFullPaintInvalidation(); 70926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) 71926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) m_regionsInvalidated = true; 725c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)} 735c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 745c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)class CurrentRenderFlowThreadDisabler { 755c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) WTF_MAKE_NONCOPYABLE(CurrentRenderFlowThreadDisabler); 765c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)public: 775c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) CurrentRenderFlowThreadDisabler(RenderView* view) 785c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) : m_view(view) 795c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) , m_renderFlowThread(0) 805c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) { 815c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) m_renderFlowThread = m_view->flowThreadController()->currentRenderFlowThread(); 825c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) if (m_renderFlowThread) 835c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) view->flowThreadController()->setCurrentRenderFlowThread(0); 845c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 855c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) ~CurrentRenderFlowThreadDisabler() 865c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) { 875c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) if (m_renderFlowThread) 885c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) m_view->flowThreadController()->setCurrentRenderFlowThread(m_renderFlowThread); 895c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 905c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)private: 915c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) RenderView* m_view; 925c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) RenderFlowThread* m_renderFlowThread; 935c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)}; 945c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 95926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles)void RenderFlowThread::validateRegions() 965c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles){ 975c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) if (m_regionsInvalidated) { 985c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) m_regionsInvalidated = false; 995c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) m_regionsHaveUniformLogicalHeight = true; 1005c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1015c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) if (hasRegions()) { 102926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) LayoutUnit previousRegionLogicalHeight = 0; 103926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) bool firstRegionVisited = false; 10402772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch 105197021e6b966cfb06891637935ef33fff06433d1Ben Murdoch for (RenderMultiColumnSetList::iterator iter = m_multiColumnSetList.begin(); iter != m_multiColumnSetList.end(); ++iter) { 106197021e6b966cfb06891637935ef33fff06433d1Ben Murdoch RenderMultiColumnSet* columnSet = *iter; 107197021e6b966cfb06891637935ef33fff06433d1Ben Murdoch LayoutUnit regionLogicalHeight = columnSet->pageLogicalHeight(); 1085c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 109f79f16f17ddc4f842d7b7a38603e280e94be826aTorne (Richard Coles) if (!firstRegionVisited) { 1105c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) firstRegionVisited = true; 111f79f16f17ddc4f842d7b7a38603e280e94be826aTorne (Richard Coles) } else { 1125c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) if (m_regionsHaveUniformLogicalHeight && previousRegionLogicalHeight != regionLogicalHeight) 1135c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) m_regionsHaveUniformLogicalHeight = false; 1145c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 1155c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 116aafa69cb17c9d6606c07663ade5f81388a2c5986Ben Murdoch previousRegionLogicalHeight = regionLogicalHeight; 1175c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 1185c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 1195c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 1205c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 121197021e6b966cfb06891637935ef33fff06433d1Ben Murdoch updateLogicalWidth(); // Called to get the maximum logical width for the columnSet. 122926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) updateRegionsFlowThreadPortionRect(); 123926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles)} 124926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) 125926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles)void RenderFlowThread::layout() 126926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles){ 127926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) m_pageLogicalSizeChanged = m_regionsInvalidated && everHadLayout(); 12853e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) 1295c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) CurrentRenderFlowThreadMaintainer currentFlowThreadSetter(this); 1308abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) RenderBlockFlow::layout(); 1315c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 132926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) m_pageLogicalSizeChanged = false; 1335c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)} 1345c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1355c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)void RenderFlowThread::computeLogicalHeight(LayoutUnit, LayoutUnit logicalTop, LogicalExtentComputedValues& computedValues) const 1365c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles){ 1375c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) computedValues.m_position = logicalTop; 1385c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) computedValues.m_extent = 0; 1395c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 140197021e6b966cfb06891637935ef33fff06433d1Ben Murdoch for (RenderMultiColumnSetList::const_iterator iter = m_multiColumnSetList.begin(); iter != m_multiColumnSetList.end(); ++iter) { 141197021e6b966cfb06891637935ef33fff06433d1Ben Murdoch RenderMultiColumnSet* columnSet = *iter; 142197021e6b966cfb06891637935ef33fff06433d1Ben Murdoch computedValues.m_extent += columnSet->logicalHeightOfAllFlowThreadContent(); 1435c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 1445c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)} 1455c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 14693ac45cfc74041c8ae536ce58a9534d46db2024eTorne (Richard Coles)bool RenderFlowThread::nodeAtPoint(const HitTestRequest& request, HitTestResult& result, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction hitTestAction) 14793ac45cfc74041c8ae536ce58a9534d46db2024eTorne (Richard Coles){ 14893ac45cfc74041c8ae536ce58a9534d46db2024eTorne (Richard Coles) if (hitTestAction == HitTestBlockBackground) 14993ac45cfc74041c8ae536ce58a9534d46db2024eTorne (Richard Coles) return false; 15009380295ba73501a205346becac22c6978e4671dTorne (Richard Coles) return RenderBlockFlow::nodeAtPoint(request, result, locationInContainer, accumulatedOffset, hitTestAction); 1515c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)} 1525c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1539e12abdf8c3a23d52091ea54ebb6a04d327f9300Torne (Richard Coles)bool RenderFlowThread::shouldIssuePaintInvalidations(const LayoutRect& r) const 1545c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles){ 1559bbd2f5e390b01907d97ecffde80aa1b06113aacTorne (Richard Coles) if (view()->document().printing() || r.isEmpty()) 1565c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return false; 1575c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1585c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return true; 1595c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)} 1605c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1619e12abdf8c3a23d52091ea54ebb6a04d327f9300Torne (Richard Coles)void RenderFlowThread::paintInvalidationRectangleInRegions(const LayoutRect& paintInvalidationRect) const 1625c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles){ 1639e12abdf8c3a23d52091ea54ebb6a04d327f9300Torne (Richard Coles) if (!shouldIssuePaintInvalidations(paintInvalidationRect) || !hasValidRegionInfo()) 1645c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return; 1655c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1665c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) // We can't use currentFlowThread as it is possible to have interleaved flow threads and the wrong one could be used. 167197021e6b966cfb06891637935ef33fff06433d1Ben Murdoch // Let each columnSet figure out the proper enclosing flow thread. 1685c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) CurrentRenderFlowThreadDisabler disabler(view()); 16902772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch 170197021e6b966cfb06891637935ef33fff06433d1Ben Murdoch for (RenderMultiColumnSetList::const_iterator iter = m_multiColumnSetList.begin(); iter != m_multiColumnSetList.end(); ++iter) { 171197021e6b966cfb06891637935ef33fff06433d1Ben Murdoch RenderMultiColumnSet* columnSet = *iter; 1725c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1739e12abdf8c3a23d52091ea54ebb6a04d327f9300Torne (Richard Coles) columnSet->paintInvalidationForFlowThreadContent(paintInvalidationRect); 1745c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 1755c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)} 1765c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 177926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles)LayoutUnit RenderFlowThread::pageLogicalHeightForOffset(LayoutUnit offset) 1785c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles){ 179197021e6b966cfb06891637935ef33fff06433d1Ben Murdoch RenderMultiColumnSet* columnSet = columnSetAtBlockOffset(offset); 180197021e6b966cfb06891637935ef33fff06433d1Ben Murdoch if (!columnSet) 1815c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return 0; 182926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) 183197021e6b966cfb06891637935ef33fff06433d1Ben Murdoch return columnSet->pageLogicalHeight(); 1845c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)} 1855c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 186926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles)LayoutUnit RenderFlowThread::pageRemainingLogicalHeightForOffset(LayoutUnit offset, PageBoundaryRule pageBoundaryRule) 1875c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles){ 188197021e6b966cfb06891637935ef33fff06433d1Ben Murdoch RenderMultiColumnSet* columnSet = columnSetAtBlockOffset(offset); 189197021e6b966cfb06891637935ef33fff06433d1Ben Murdoch if (!columnSet) 1905c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return 0; 1915c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 192197021e6b966cfb06891637935ef33fff06433d1Ben Murdoch LayoutUnit pageLogicalTop = columnSet->pageLogicalTopForOffset(offset); 193197021e6b966cfb06891637935ef33fff06433d1Ben Murdoch LayoutUnit pageLogicalHeight = columnSet->pageLogicalHeight(); 1945c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) LayoutUnit pageLogicalBottom = pageLogicalTop + pageLogicalHeight; 1955c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) LayoutUnit remainingHeight = pageLogicalBottom - offset; 1965c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) if (pageBoundaryRule == IncludePageBoundary) { 1975c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) // If IncludePageBoundary is set, the line exactly on the top edge of a 198197021e6b966cfb06891637935ef33fff06433d1Ben Murdoch // columnSet will act as being part of the previous columnSet. 1995c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) remainingHeight = intMod(remainingHeight, pageLogicalHeight); 2005c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 2015c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return remainingHeight; 2025c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)} 2035c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 2045c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)RenderRegion* RenderFlowThread::firstRegion() const 2055c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles){ 2065c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) if (!hasValidRegionInfo()) 2075c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return 0; 208197021e6b966cfb06891637935ef33fff06433d1Ben Murdoch return m_multiColumnSetList.first(); 2095c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)} 2105c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 2115c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)RenderRegion* RenderFlowThread::lastRegion() const 2125c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles){ 2135c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) if (!hasValidRegionInfo()) 2145c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return 0; 215197021e6b966cfb06891637935ef33fff06433d1Ben Murdoch return m_multiColumnSetList.last(); 2165c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)} 2175c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 21809380295ba73501a205346becac22c6978e4671dTorne (Richard Coles)void RenderFlowThread::updateRegionsFlowThreadPortionRect() 219926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles){ 2205c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) LayoutUnit logicalHeight = 0; 22153e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) // FIXME: Optimize not to clear the interval all the time. This implies manually managing the tree nodes lifecycle. 222197021e6b966cfb06891637935ef33fff06433d1Ben Murdoch m_multiColumnSetIntervalTree.clear(); 223197021e6b966cfb06891637935ef33fff06433d1Ben Murdoch m_multiColumnSetIntervalTree.initIfNeeded(); 224197021e6b966cfb06891637935ef33fff06433d1Ben Murdoch for (RenderMultiColumnSetList::iterator iter = m_multiColumnSetList.begin(); iter != m_multiColumnSetList.end(); ++iter) { 225197021e6b966cfb06891637935ef33fff06433d1Ben Murdoch RenderMultiColumnSet* columnSet = *iter; 2265c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 227197021e6b966cfb06891637935ef33fff06433d1Ben Murdoch LayoutUnit columnSetLogicalWidth = columnSet->pageLogicalWidth(); 228197021e6b966cfb06891637935ef33fff06433d1Ben Murdoch LayoutUnit columnSetLogicalHeight = std::min<LayoutUnit>(RenderFlowThread::maxLogicalHeight() - logicalHeight, columnSet->logicalHeightOfAllFlowThreadContent()); 2295c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 230197021e6b966cfb06891637935ef33fff06433d1Ben Murdoch LayoutRect columnSetRect(style()->direction() == LTR ? LayoutUnit() : logicalWidth() - columnSetLogicalWidth, logicalHeight, columnSetLogicalWidth, columnSetLogicalHeight); 2315c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 232197021e6b966cfb06891637935ef33fff06433d1Ben Murdoch columnSet->setFlowThreadPortionRect(isHorizontalWritingMode() ? columnSetRect : columnSetRect.transposedRect()); 23353e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) 234197021e6b966cfb06891637935ef33fff06433d1Ben Murdoch m_multiColumnSetIntervalTree.add(MultiColumnSetIntervalTree::createInterval(logicalHeight, logicalHeight + columnSetLogicalHeight, columnSet)); 23553e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) 236197021e6b966cfb06891637935ef33fff06433d1Ben Murdoch logicalHeight += columnSetLogicalHeight; 2375c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 238926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles)} 239926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) 240926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles)void RenderFlowThread::collectLayerFragments(LayerFragments& layerFragments, const LayoutRect& layerBoundingBox, const LayoutRect& dirtyRect) 241926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles){ 242926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) ASSERT(!m_regionsInvalidated); 24302772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch 244197021e6b966cfb06891637935ef33fff06433d1Ben Murdoch for (RenderMultiColumnSetList::const_iterator iter = m_multiColumnSetList.begin(); iter != m_multiColumnSetList.end(); ++iter) { 245197021e6b966cfb06891637935ef33fff06433d1Ben Murdoch RenderMultiColumnSet* columnSet = *iter; 246197021e6b966cfb06891637935ef33fff06433d1Ben Murdoch columnSet->collectLayerFragments(layerFragments, layerBoundingBox, dirtyRect); 247926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) } 248926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles)} 249926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) 250926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles)LayoutRect RenderFlowThread::fragmentsBoundingBox(const LayoutRect& layerBoundingBox) 251926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles){ 252926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) ASSERT(!m_regionsInvalidated); 25302772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch 254926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) LayoutRect result; 255197021e6b966cfb06891637935ef33fff06433d1Ben Murdoch for (RenderMultiColumnSetList::const_iterator iter = m_multiColumnSetList.begin(); iter != m_multiColumnSetList.end(); ++iter) { 256197021e6b966cfb06891637935ef33fff06433d1Ben Murdoch RenderMultiColumnSet* columnSet = *iter; 257926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) LayerFragments fragments; 258197021e6b966cfb06891637935ef33fff06433d1Ben Murdoch columnSet->collectLayerFragments(fragments, layerBoundingBox, PaintInfo::infiniteRect()); 259926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) for (size_t i = 0; i < fragments.size(); ++i) { 260926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) const LayerFragment& fragment = fragments.at(i); 261926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) LayoutRect fragmentRect(layerBoundingBox); 262926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) fragmentRect.intersect(fragment.paginationClip); 263926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) fragmentRect.moveBy(fragment.paginationOffset); 264926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) result.unite(fragmentRect); 265926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) } 266926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) } 26702772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch 268926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) return result; 269926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles)} 270926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) 2718abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles)bool RenderFlowThread::cachedOffsetFromLogicalTopOfFirstRegion(const RenderBox* box, LayoutUnit& result) const 2728abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles){ 2738abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) RenderBoxToOffsetMap::const_iterator offsetIterator = m_boxesToOffsetMap.find(box); 2748abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) if (offsetIterator == m_boxesToOffsetMap.end()) 2758abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) return false; 2768abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) 2778abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) result = offsetIterator->value; 2788abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) return true; 2798abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles)} 2808abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) 2818abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles)void RenderFlowThread::setOffsetFromLogicalTopOfFirstRegion(const RenderBox* box, LayoutUnit offset) 2828abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles){ 2838abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) m_boxesToOffsetMap.set(box, offset); 2848abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles)} 2858abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) 2868abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles)void RenderFlowThread::clearOffsetFromLogicalTopOfFirstRegion(const RenderBox* box) 2878abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles){ 2888abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) ASSERT(m_boxesToOffsetMap.contains(box)); 2898abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) m_boxesToOffsetMap.remove(box); 2908abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles)} 2918abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) 2928abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles)const RenderBox* RenderFlowThread::currentStatePusherRenderBox() const 2938abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles){ 2948abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) const RenderObject* currentObject = m_statePusherObjectsStack.isEmpty() ? 0 : m_statePusherObjectsStack.last(); 2958abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) if (currentObject && currentObject->isBox()) 2968abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) return toRenderBox(currentObject); 2978abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) 2988abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) return 0; 2998abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles)} 3008abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) 301d5428f32f5d1719f774f62e19147104ca245a3abTorne (Richard Coles)void RenderFlowThread::pushFlowThreadLayoutState(const RenderObject& object) 3028abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles){ 3038abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) if (const RenderBox* currentBoxDescendant = currentStatePusherRenderBox()) { 3048abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) LayoutState* layoutState = currentBoxDescendant->view()->layoutState(); 3058abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) if (layoutState && layoutState->isPaginated()) { 3068abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) ASSERT(layoutState->renderer() == currentBoxDescendant); 30707a852d8c1953036774d8f3b65d18dcfea3bb4a2Ben Murdoch LayoutSize offsetDelta = layoutState->layoutOffset() - layoutState->pageOffset(); 3088abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) setOffsetFromLogicalTopOfFirstRegion(currentBoxDescendant, currentBoxDescendant->isHorizontalWritingMode() ? offsetDelta.height() : offsetDelta.width()); 3098abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) } 3108abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) } 3118abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) 312d5428f32f5d1719f774f62e19147104ca245a3abTorne (Richard Coles) m_statePusherObjectsStack.add(&object); 3138abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles)} 3148abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) 3158abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles)void RenderFlowThread::popFlowThreadLayoutState() 3168abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles){ 3178abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) m_statePusherObjectsStack.removeLast(); 3188abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) 3198abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) if (const RenderBox* currentBoxDescendant = currentStatePusherRenderBox()) { 3208abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) LayoutState* layoutState = currentBoxDescendant->view()->layoutState(); 3218abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) if (layoutState && layoutState->isPaginated()) 3228abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) clearOffsetFromLogicalTopOfFirstRegion(currentBoxDescendant); 3238abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) } 3248abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles)} 3258abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) 3268abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles)LayoutUnit RenderFlowThread::offsetFromLogicalTopOfFirstRegion(const RenderBlock* currentBlock) const 3278abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles){ 3288abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) // First check if we cached the offset for the block if it's an ancestor containing block of the box 3298abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) // being currently laid out. 3308abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) LayoutUnit offset; 3318abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) if (cachedOffsetFromLogicalTopOfFirstRegion(currentBlock, offset)) 3328abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) return offset; 3338abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) 3348abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) // If it's the current box being laid out, use the layout state. 3358abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) const RenderBox* currentBoxDescendant = currentStatePusherRenderBox(); 3368abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) if (currentBlock == currentBoxDescendant) { 3378abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) LayoutState* layoutState = view()->layoutState(); 3388abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) ASSERT(layoutState->renderer() == currentBlock); 3398abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) ASSERT(layoutState && layoutState->isPaginated()); 34007a852d8c1953036774d8f3b65d18dcfea3bb4a2Ben Murdoch LayoutSize offsetDelta = layoutState->layoutOffset() - layoutState->pageOffset(); 3418abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) return currentBoxDescendant->isHorizontalWritingMode() ? offsetDelta.height() : offsetDelta.width(); 3428abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) } 3438abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) 3448abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) // As a last resort, take the slow path. 3458abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) LayoutRect blockRect(0, 0, currentBlock->width(), currentBlock->height()); 3468abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) while (currentBlock && !currentBlock->isRenderFlowThread()) { 3478abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) RenderBlock* containerBlock = currentBlock->containingBlock(); 3488abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) ASSERT(containerBlock); 3498abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) if (!containerBlock) 3508abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) return 0; 3518abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) LayoutPoint currentBlockLocation = currentBlock->location(); 3528abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) 3538abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) if (containerBlock->style()->writingMode() != currentBlock->style()->writingMode()) { 3548abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) // We have to put the block rect in container coordinates 3558abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) // and we have to take into account both the container and current block flipping modes 3568abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) if (containerBlock->style()->isFlippedBlocksWritingMode()) { 3578abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) if (containerBlock->isHorizontalWritingMode()) 3588abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) blockRect.setY(currentBlock->height() - blockRect.maxY()); 3598abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) else 3608abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) blockRect.setX(currentBlock->width() - blockRect.maxX()); 3618abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) } 3628abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) currentBlock->flipForWritingMode(blockRect); 3638abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) } 3648abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) blockRect.moveBy(currentBlockLocation); 3658abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) currentBlock = containerBlock; 3668abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) } 3678abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) 3688abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) return currentBlock->isHorizontalWritingMode() ? blockRect.y() : blockRect.x(); 3698abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles)} 3708abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) 371197021e6b966cfb06891637935ef33fff06433d1Ben Murdochvoid RenderFlowThread::RegionSearchAdapter::collectIfNeeded(const MultiColumnSetInterval& interval) 37253e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles){ 37353e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) if (m_result) 37453e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) return; 37553e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) if (interval.low() <= m_offset && interval.high() > m_offset) 37653e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) m_result = interval.data(); 37753e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles)} 37853e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) 3795c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)CurrentRenderFlowThreadMaintainer::CurrentRenderFlowThreadMaintainer(RenderFlowThread* renderFlowThread) 3805c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) : m_renderFlowThread(renderFlowThread) 381926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) , m_previousRenderFlowThread(0) 3825c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles){ 3835c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) if (!m_renderFlowThread) 3845c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return; 3855c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) RenderView* view = m_renderFlowThread->view(); 386926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) m_previousRenderFlowThread = view->flowThreadController()->currentRenderFlowThread(); 3875c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) view->flowThreadController()->setCurrentRenderFlowThread(m_renderFlowThread); 3885c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)} 3895c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 3905c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)CurrentRenderFlowThreadMaintainer::~CurrentRenderFlowThreadMaintainer() 3915c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles){ 3925c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) if (!m_renderFlowThread) 3935c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return; 3945c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) RenderView* view = m_renderFlowThread->view(); 3955c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) ASSERT(view->flowThreadController()->currentRenderFlowThread() == m_renderFlowThread); 396926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) view->flowThreadController()->setCurrentRenderFlowThread(m_previousRenderFlowThread); 3975c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)} 3985c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 3995c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 400c1847b1379d12d0e05df27436bf19a9b1bf12deaTorne (Richard Coles)} // namespace blink 401