| /* |
| * Copyright (C) 1999 Lars Knoll (knoll@kde.org) |
| * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved. |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 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 |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public License |
| * along with this library; see the file COPYING.LIB. If not, write to |
| * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| */ |
| |
| #include "config.h" |
| #include "core/rendering/RenderView.h" |
| |
| #include "core/dom/Document.h" |
| #include "core/dom/Element.h" |
| #include "core/frame/LocalFrame.h" |
| #include "core/page/Page.h" |
| #include "core/rendering/GraphicsContextAnnotator.h" |
| #include "core/rendering/HitTestResult.h" |
| #include "core/rendering/RenderGeometryMap.h" |
| #include "core/rendering/RenderLayer.h" |
| #include "core/rendering/RenderPart.h" |
| #include "core/rendering/RenderSelectionInfo.h" |
| #include "core/rendering/compositing/CompositedLayerMapping.h" |
| #include "core/rendering/compositing/RenderLayerCompositor.h" |
| #include "platform/RuntimeEnabledFeatures.h" |
| #include "platform/TraceEvent.h" |
| #include "platform/geometry/FloatQuad.h" |
| #include "platform/geometry/TransformState.h" |
| #include "platform/graphics/GraphicsContext.h" |
| |
| namespace blink { |
| |
| RenderView::RenderView(Document* document) |
| : RenderBlockFlow(document) |
| , m_frameView(document->view()) |
| , m_selectionStart(nullptr) |
| , m_selectionEnd(nullptr) |
| , m_selectionStartPos(-1) |
| , m_selectionEndPos(-1) |
| , m_layoutState(0) |
| , m_renderCounterCount(0) |
| , m_hitTestCount(0) |
| { |
| // init RenderObject attributes |
| setInline(false); |
| |
| m_minPreferredLogicalWidth = 0; |
| m_maxPreferredLogicalWidth = 0; |
| |
| setPreferredLogicalWidthsDirty(MarkOnlyThis); |
| |
| setPositionState(AbsolutePosition); // to 0,0 :) |
| } |
| |
| RenderView::~RenderView() |
| { |
| } |
| |
| void RenderView::trace(Visitor* visitor) |
| { |
| visitor->trace(m_selectionStart); |
| visitor->trace(m_selectionEnd); |
| RenderBlockFlow::trace(visitor); |
| } |
| |
| bool RenderView::hitTest(const HitTestRequest& request, HitTestResult& result) |
| { |
| return hitTest(request, result.hitTestLocation(), result); |
| } |
| |
| bool RenderView::hitTest(const HitTestRequest& request, const HitTestLocation& location, HitTestResult& result) |
| { |
| TRACE_EVENT0("blink", "RenderView::hitTest"); |
| m_hitTestCount++; |
| |
| // We have to recursively update layout/style here because otherwise, when the hit test recurses |
| // into a child document, it could trigger a layout on the parent document, which can destroy RenderLayers |
| // that are higher up in the call stack, leading to crashes. |
| // Note that Document::updateLayout calls its parent's updateLayout. |
| // FIXME: It should be the caller's responsibility to ensure an up-to-date layout. |
| frameView()->updateLayoutAndStyleIfNeededRecursive(); |
| return layer()->hitTest(request, location, result); |
| } |
| |
| void RenderView::computeLogicalHeight(LayoutUnit logicalHeight, LayoutUnit, LogicalExtentComputedValues& computedValues) const |
| { |
| computedValues.m_extent = m_frameView ? LayoutUnit(viewLogicalHeight()) : logicalHeight; |
| } |
| |
| void RenderView::updateLogicalWidth() |
| { |
| if (m_frameView) |
| setLogicalWidth(viewLogicalWidth()); |
| } |
| |
| LayoutUnit RenderView::availableLogicalHeight(AvailableLogicalHeightType heightType) const |
| { |
| return RenderBlockFlow::availableLogicalHeight(heightType); |
| } |
| |
| bool RenderView::isChildAllowed(RenderObject* child, RenderStyle*) const |
| { |
| return child->isBox(); |
| } |
| |
| void RenderView::layoutContent() |
| { |
| ASSERT(needsLayout()); |
| |
| RenderBlockFlow::layout(); |
| |
| #if ENABLE(ASSERT) |
| checkLayoutState(); |
| #endif |
| } |
| |
| #if ENABLE(ASSERT) |
| void RenderView::checkLayoutState() |
| { |
| ASSERT(!m_layoutState->next()); |
| } |
| #endif |
| |
| bool RenderView::shouldDoFullPaintInvalidationForNextLayout() const |
| { |
| // It's hard to predict here which of full paint invalidation or per-descendant paint invalidation costs less. |
| // For vertical writing mode or width change it's more likely that per-descendant paint invalidation |
| // eventually turns out to be full paint invalidation but with the cost to handle more layout states |
| // and discrete paint invalidation rects, so marking full paint invalidation here is more likely to cost less. |
| // Otherwise, per-descendant paint invalidation is more likely to avoid unnecessary full paint invalidation. |
| |
| if (!style()->isHorizontalWritingMode() || width() != viewWidth()) |
| return true; |
| |
| if (height() != viewHeight()) { |
| if (RenderObject* backgroundRenderer = this->backgroundRenderer()) { |
| // When background-attachment is 'fixed', we treat the viewport (instead of the 'root' |
| // i.e. html or body) as the background positioning area, and we should full paint invalidation |
| // viewport resize if the background image is not composited and needs full paint invalidation on |
| // background positioning area resize. |
| if (!m_compositor || !m_compositor->needsFixedRootBackgroundLayer(layer())) { |
| if (backgroundRenderer->style()->hasFixedBackgroundImage() |
| && mustInvalidateFillLayersPaintOnHeightChange(backgroundRenderer->style()->backgroundLayers())) |
| return true; |
| } |
| } |
| } |
| |
| return false; |
| } |
| |
| void RenderView::layout() |
| { |
| SubtreeLayoutScope layoutScope(*this); |
| |
| // Use calcWidth/Height to get the new width/height, since this will take the full page zoom factor into account. |
| bool relayoutChildren = (!m_frameView || width() != viewWidth() || height() != viewHeight()); |
| if (relayoutChildren) { |
| layoutScope.setChildNeedsLayout(this); |
| for (RenderObject* child = firstChild(); child; child = child->nextSibling()) { |
| if ((child->isBox() && toRenderBox(child)->hasRelativeLogicalHeight()) |
| || child->style()->logicalHeight().isPercent() |
| || child->style()->logicalMinHeight().isPercent() |
| || child->style()->logicalMaxHeight().isPercent()) |
| layoutScope.setChildNeedsLayout(child); |
| } |
| } |
| |
| ASSERT(!m_layoutState); |
| if (!needsLayout()) |
| return; |
| |
| LayoutState rootLayoutState(*this); |
| |
| layoutContent(); |
| |
| #if ENABLE(ASSERT) |
| checkLayoutState(); |
| #endif |
| clearNeedsLayout(); |
| } |
| |
| void RenderView::mapLocalToContainer(const RenderLayerModelObject* paintInvalidationContainer, TransformState& transformState, MapCoordinatesFlags mode, bool* wasFixed, const PaintInvalidationState* paintInvalidationState) const |
| { |
| ASSERT_UNUSED(wasFixed, !wasFixed || *wasFixed == static_cast<bool>(mode & IsFixed)); |
| |
| if (!paintInvalidationContainer && mode & UseTransforms && shouldUseTransformFromContainer(0)) { |
| TransformationMatrix t; |
| getTransformFromContainer(0, LayoutSize(), t); |
| transformState.applyTransform(t); |
| } |
| |
| if (mode & IsFixed && m_frameView) |
| transformState.move(m_frameView->scrollOffsetForFixedPosition()); |
| |
| if (paintInvalidationContainer == this) |
| return; |
| } |
| |
| const RenderObject* RenderView::pushMappingToContainer(const RenderLayerModelObject* ancestorToStopAt, RenderGeometryMap& geometryMap) const |
| { |
| LayoutSize offsetForFixedPosition; |
| LayoutSize offset; |
| RenderObject* container = 0; |
| |
| if (m_frameView) |
| offsetForFixedPosition = m_frameView->scrollOffsetForFixedPosition(); |
| |
| // If a container was specified, and was not 0 or the RenderView, then we |
| // should have found it by now unless we're traversing to a parent document. |
| ASSERT_ARG(ancestorToStopAt, !ancestorToStopAt || ancestorToStopAt == this || container); |
| |
| if ((!ancestorToStopAt || container) && shouldUseTransformFromContainer(container)) { |
| TransformationMatrix t; |
| getTransformFromContainer(container, LayoutSize(), t); |
| geometryMap.push(this, t, false, false, false, true, offsetForFixedPosition); |
| } else { |
| geometryMap.push(this, offset, false, false, false, false, offsetForFixedPosition); |
| } |
| |
| return container; |
| } |
| |
| void RenderView::mapAbsoluteToLocalPoint(MapCoordinatesFlags mode, TransformState& transformState) const |
| { |
| if (mode & IsFixed && m_frameView) |
| transformState.move(m_frameView->scrollOffsetForFixedPosition()); |
| |
| if (mode & UseTransforms && shouldUseTransformFromContainer(0)) { |
| TransformationMatrix t; |
| getTransformFromContainer(0, LayoutSize(), t); |
| transformState.applyTransform(t); |
| } |
| } |
| |
| void RenderView::computeSelfHitTestRects(Vector<LayoutRect>& rects, const LayoutPoint&) const |
| { |
| // Record the entire size of the contents of the frame. Note that we don't just |
| // use the viewport size (containing block) here because we want to ensure this includes |
| // all children (so we can avoid walking them explicitly). |
| rects.append(LayoutRect(LayoutPoint::zero(), frameView()->contentsSize())); |
| } |
| |
| void RenderView::paint(PaintInfo& paintInfo, const LayoutPoint& paintOffset) |
| { |
| // If we ever require layout but receive a paint anyway, something has gone horribly wrong. |
| ASSERT(!needsLayout()); |
| // RenderViews should never be called to paint with an offset not on device pixels. |
| ASSERT(LayoutPoint(IntPoint(paintOffset.x(), paintOffset.y())) == paintOffset); |
| |
| ANNOTATE_GRAPHICS_CONTEXT(paintInfo, this); |
| |
| // This avoids painting garbage between columns if there is a column gap. |
| if (m_frameView && style()->isOverflowPaged()) |
| paintInfo.context->fillRect(paintInfo.rect, m_frameView->baseBackgroundColor()); |
| |
| paintObject(paintInfo, paintOffset); |
| } |
| |
| static inline bool rendererObscuresBackground(RenderBox* rootBox) |
| { |
| ASSERT(rootBox); |
| RenderStyle* style = rootBox->style(); |
| if (style->opacity() != 1 |
| || style->hasFilter() |
| || style->hasTransform()) |
| return false; |
| |
| if (rootBox->compositingState() == PaintsIntoOwnBacking) |
| return false; |
| |
| if (rootBox->style()->backgroundClip() == TextFillBox) |
| return false; |
| |
| return true; |
| } |
| |
| void RenderView::paintBoxDecorationBackground(PaintInfo& paintInfo, const LayoutPoint&) |
| { |
| if (!view()) |
| return; |
| |
| if (paintInfo.skipRootBackground()) |
| return; |
| |
| bool shouldPaintBackground = true; |
| Node* documentElement = document().documentElement(); |
| if (RenderBox* rootBox = documentElement ? toRenderBox(documentElement->renderer()) : 0) |
| shouldPaintBackground = !rendererObscuresBackground(rootBox); |
| |
| // If painting will entirely fill the view, no need to fill the background. |
| if (!shouldPaintBackground) |
| return; |
| |
| // This code typically only executes if the root element's visibility has been set to hidden, |
| // if there is a transform on the <html>, or if there is a page scale factor less than 1. |
| // Only fill with the base background color (typically white) if we're the root document, |
| // since iframes/frames with no background in the child document should show the parent's background. |
| if (!frameView()->isTransparent()) { |
| Color baseColor = frameView()->baseBackgroundColor(); |
| if (baseColor.alpha()) { |
| CompositeOperator previousOperator = paintInfo.context->compositeOperation(); |
| paintInfo.context->setCompositeOperation(CompositeCopy); |
| paintInfo.context->fillRect(paintInfo.rect, baseColor); |
| paintInfo.context->setCompositeOperation(previousOperator); |
| } else { |
| paintInfo.context->clearRect(paintInfo.rect); |
| } |
| } |
| } |
| |
| void RenderView::invalidateTreeIfNeeded(const PaintInvalidationState& paintInvalidationState) |
| { |
| ASSERT(!needsLayout()); |
| |
| // We specifically need to issue paint invalidations for the viewRect since other renderers |
| // short-circuit on full-paint invalidation. |
| LayoutRect dirtyRect = viewRect(); |
| if (doingFullPaintInvalidation() && !dirtyRect.isEmpty()) { |
| const RenderLayerModelObject* paintInvalidationContainer = &paintInvalidationState.paintInvalidationContainer(); |
| mapRectToPaintInvalidationBacking(paintInvalidationContainer, dirtyRect, &paintInvalidationState); |
| invalidatePaintUsingContainer(paintInvalidationContainer, dirtyRect, InvalidationFull); |
| } |
| RenderBlock::invalidateTreeIfNeeded(paintInvalidationState); |
| } |
| |
| void RenderView::invalidatePaintForRectangle(const LayoutRect& paintInvalidationRect) const |
| { |
| ASSERT(!paintInvalidationRect.isEmpty()); |
| |
| if (!m_frameView) |
| return; |
| |
| if (layer()->compositingState() == PaintsIntoOwnBacking) { |
| layer()->paintInvalidator().setBackingNeedsPaintInvalidationInRect(paintInvalidationRect); |
| } else { |
| m_frameView->contentRectangleForPaintInvalidation(pixelSnappedIntRect(paintInvalidationRect)); |
| } |
| } |
| |
| void RenderView::invalidatePaintForViewAndCompositedLayers() |
| { |
| setShouldDoFullPaintInvalidation(true); |
| |
| // The only way we know how to hit these ASSERTS below this point is via the Chromium OS login screen. |
| DisableCompositingQueryAsserts disabler; |
| |
| if (compositor()->inCompositingMode()) |
| compositor()->fullyInvalidatePaint(); |
| } |
| |
| void RenderView::mapRectToPaintInvalidationBacking(const RenderLayerModelObject* paintInvalidationContainer, LayoutRect& rect, const PaintInvalidationState* invalidationState) const |
| { |
| mapRectToPaintInvalidationBacking(paintInvalidationContainer, rect, IsNotFixedPosition, invalidationState); |
| } |
| |
| void RenderView::mapRectToPaintInvalidationBacking(const RenderLayerModelObject* paintInvalidationContainer, LayoutRect& rect, ViewportConstrainedPosition viewportConstraint, const PaintInvalidationState* state) const |
| { |
| if (style()->isFlippedBlocksWritingMode()) { |
| // We have to flip by hand since the view's logical height has not been determined. We |
| // can use the viewport width and height. |
| if (style()->isHorizontalWritingMode()) |
| rect.setY(viewHeight() - rect.maxY()); |
| else |
| rect.setX(viewWidth() - rect.maxX()); |
| } |
| |
| if (viewportConstraint == IsFixedPosition && m_frameView) { |
| rect.move(m_frameView->scrollOffsetForFixedPosition()); |
| // If we have a pending scroll, invalidate the previous scroll position. |
| if (!m_frameView->pendingScrollDelta().isZero()) { |
| rect.move(-m_frameView->pendingScrollDelta()); |
| } |
| } |
| |
| // Apply our transform if we have one (because of full page zooming). |
| if (!paintInvalidationContainer && layer() && layer()->transform()) |
| rect = layer()->transform()->mapRect(rect); |
| } |
| |
| |
| void RenderView::absoluteRects(Vector<IntRect>& rects, const LayoutPoint& accumulatedOffset) const |
| { |
| rects.append(pixelSnappedIntRect(accumulatedOffset, layer()->size())); |
| } |
| |
| void RenderView::absoluteQuads(Vector<FloatQuad>& quads, bool* wasFixed) const |
| { |
| if (wasFixed) |
| *wasFixed = false; |
| quads.append(FloatRect(FloatPoint(), layer()->size())); |
| } |
| |
| static RenderObject* rendererAfterPosition(RenderObject* object, unsigned offset) |
| { |
| if (!object) |
| return 0; |
| |
| RenderObject* child = object->childAt(offset); |
| return child ? child : object->nextInPreOrderAfterChildren(); |
| } |
| |
| IntRect RenderView::selectionBounds(bool clipToVisibleContent) const |
| { |
| typedef WillBeHeapHashMap<RawPtrWillBeMember<RenderObject>, OwnPtrWillBeMember<RenderSelectionInfo> > SelectionMap; |
| SelectionMap selectedObjects; |
| |
| RenderObject* os = m_selectionStart; |
| RenderObject* stop = rendererAfterPosition(m_selectionEnd, m_selectionEndPos); |
| while (os && os != stop) { |
| if ((os->canBeSelectionLeaf() || os == m_selectionStart || os == m_selectionEnd) && os->selectionState() != SelectionNone) { |
| // Blocks are responsible for painting line gaps and margin gaps. They must be examined as well. |
| selectedObjects.set(os, adoptPtrWillBeNoop(new RenderSelectionInfo(os, clipToVisibleContent))); |
| RenderBlock* cb = os->containingBlock(); |
| while (cb && !cb->isRenderView()) { |
| OwnPtrWillBeMember<RenderSelectionInfo>& blockInfo = selectedObjects.add(cb, nullptr).storedValue->value; |
| if (blockInfo) |
| break; |
| blockInfo = adoptPtrWillBeNoop(new RenderSelectionInfo(cb, clipToVisibleContent)); |
| cb = cb->containingBlock(); |
| } |
| } |
| |
| os = os->nextInPreOrder(); |
| } |
| |
| // Now create a single bounding box rect that encloses the whole selection. |
| LayoutRect selRect; |
| SelectionMap::iterator end = selectedObjects.end(); |
| for (SelectionMap::iterator i = selectedObjects.begin(); i != end; ++i) { |
| RenderSelectionInfo* info = i->value.get(); |
| // RenderSelectionInfo::rect() is in the coordinates of the paintInvalidationContainer, so map to page coordinates. |
| LayoutRect currRect = info->rect(); |
| if (const RenderLayerModelObject* paintInvalidationContainer = info->paintInvalidationContainer()) { |
| FloatQuad absQuad = paintInvalidationContainer->localToAbsoluteQuad(FloatRect(currRect)); |
| currRect = absQuad.enclosingBoundingBox(); |
| } |
| selRect.unite(currRect); |
| } |
| return pixelSnappedIntRect(selRect); |
| } |
| |
| void RenderView::invalidatePaintForSelection() const |
| { |
| HashSet<RenderBlock*> processedBlocks; |
| |
| // For querying RenderLayer::compositingState() |
| // FIXME: this may be wrong. crbug.com/407416 |
| DisableCompositingQueryAsserts disabler; |
| |
| RenderObject* end = rendererAfterPosition(m_selectionEnd, m_selectionEndPos); |
| for (RenderObject* o = m_selectionStart; o && o != end; o = o->nextInPreOrder()) { |
| if (!o->canBeSelectionLeaf() && o != m_selectionStart && o != m_selectionEnd) |
| continue; |
| if (o->selectionState() == SelectionNone) |
| continue; |
| |
| RenderSelectionInfo(o, true).invalidatePaint(); |
| |
| // Blocks are responsible for painting line gaps and margin gaps. They must be examined as well. |
| for (RenderBlock* block = o->containingBlock(); block && !block->isRenderView(); block = block->containingBlock()) { |
| if (!processedBlocks.add(block).isNewEntry) |
| break; |
| RenderSelectionInfo(block, true).invalidatePaint(); |
| } |
| } |
| } |
| |
| // When exploring the RenderTree looking for the nodes involved in the Selection, sometimes it's |
| // required to change the traversing direction because the "start" position is below the "end" one. |
| static inline RenderObject* getNextOrPrevRenderObjectBasedOnDirection(const RenderObject* o, const RenderObject* stop, bool& continueExploring, bool& exploringBackwards) |
| { |
| RenderObject* next; |
| if (exploringBackwards) { |
| next = o->previousInPreOrder(); |
| continueExploring = next && !(next)->isRenderView(); |
| } else { |
| next = o->nextInPreOrder(); |
| continueExploring = next && next != stop; |
| exploringBackwards = !next && (next != stop); |
| if (exploringBackwards) { |
| next = stop->previousInPreOrder(); |
| continueExploring = next && !next->isRenderView(); |
| } |
| } |
| |
| return next; |
| } |
| |
| void RenderView::setSelection(RenderObject* start, int startPos, RenderObject* end, int endPos, SelectionPaintInvalidationMode blockPaintInvalidationMode) |
| { |
| // This code makes no assumptions as to if the rendering tree is up to date or not |
| // and will not try to update it. Currently clearSelection calls this |
| // (intentionally) without updating the rendering tree as it doesn't care. |
| // Other callers may want to force recalc style before calling this. |
| |
| // Make sure both our start and end objects are defined. |
| // Check www.msnbc.com and try clicking around to find the case where this happened. |
| if ((start && !end) || (end && !start)) |
| return; |
| |
| // Just return if the selection hasn't changed. |
| if (m_selectionStart == start && m_selectionStartPos == startPos && |
| m_selectionEnd == end && m_selectionEndPos == endPos) |
| return; |
| |
| // Record the old selected objects. These will be used later |
| // when we compare against the new selected objects. |
| int oldStartPos = m_selectionStartPos; |
| int oldEndPos = m_selectionEndPos; |
| |
| // Objects each have a single selection rect to examine. |
| typedef WillBeHeapHashMap<RawPtrWillBeMember<RenderObject>, OwnPtrWillBeMember<RenderSelectionInfo> > SelectedObjectMap; |
| SelectedObjectMap oldSelectedObjects; |
| SelectedObjectMap newSelectedObjects; |
| |
| // Blocks contain selected objects and fill gaps between them, either on the left, right, or in between lines and blocks. |
| // In order to get the paint invalidation rect right, we have to examine left, middle, and right rects individually, since otherwise |
| // the union of those rects might remain the same even when changes have occurred. |
| typedef WillBeHeapHashMap<RawPtrWillBeMember<RenderBlock>, OwnPtrWillBeMember<RenderBlockSelectionInfo> > SelectedBlockMap; |
| SelectedBlockMap oldSelectedBlocks; |
| SelectedBlockMap newSelectedBlocks; |
| |
| RenderObject* os = m_selectionStart; |
| RenderObject* stop = rendererAfterPosition(m_selectionEnd, m_selectionEndPos); |
| bool exploringBackwards = false; |
| bool continueExploring = os && (os != stop); |
| while (continueExploring) { |
| if ((os->canBeSelectionLeaf() || os == m_selectionStart || os == m_selectionEnd) && os->selectionState() != SelectionNone) { |
| // Blocks are responsible for painting line gaps and margin gaps. They must be examined as well. |
| oldSelectedObjects.set(os, adoptPtrWillBeNoop(new RenderSelectionInfo(os, true))); |
| if (blockPaintInvalidationMode == PaintInvalidationNewXOROld) { |
| RenderBlock* cb = os->containingBlock(); |
| while (cb && !cb->isRenderView()) { |
| OwnPtrWillBeMember<RenderBlockSelectionInfo>& blockInfo = oldSelectedBlocks.add(cb, nullptr).storedValue->value; |
| if (blockInfo) |
| break; |
| blockInfo = adoptPtrWillBeNoop(new RenderBlockSelectionInfo(cb)); |
| cb = cb->containingBlock(); |
| } |
| } |
| } |
| |
| os = getNextOrPrevRenderObjectBasedOnDirection(os, stop, continueExploring, exploringBackwards); |
| } |
| |
| // Now clear the selection. |
| SelectedObjectMap::iterator oldObjectsEnd = oldSelectedObjects.end(); |
| for (SelectedObjectMap::iterator i = oldSelectedObjects.begin(); i != oldObjectsEnd; ++i) |
| i->key->setSelectionStateIfNeeded(SelectionNone); |
| |
| // set selection start and end |
| m_selectionStart = start; |
| m_selectionStartPos = startPos; |
| m_selectionEnd = end; |
| m_selectionEndPos = endPos; |
| |
| // Update the selection status of all objects between m_selectionStart and m_selectionEnd |
| if (start && start == end) |
| start->setSelectionStateIfNeeded(SelectionBoth); |
| else { |
| if (start) |
| start->setSelectionStateIfNeeded(SelectionStart); |
| if (end) |
| end->setSelectionStateIfNeeded(SelectionEnd); |
| } |
| |
| RenderObject* o = start; |
| stop = rendererAfterPosition(end, endPos); |
| |
| while (o && o != stop) { |
| if (o != start && o != end && o->canBeSelectionLeaf()) |
| o->setSelectionStateIfNeeded(SelectionInside); |
| o = o->nextInPreOrder(); |
| } |
| |
| if (blockPaintInvalidationMode != PaintInvalidationNothing) |
| layer()->clearBlockSelectionGapsBounds(); |
| |
| // Now that the selection state has been updated for the new objects, walk them again and |
| // put them in the new objects list. |
| o = start; |
| exploringBackwards = false; |
| continueExploring = o && (o != stop); |
| while (continueExploring) { |
| if ((o->canBeSelectionLeaf() || o == start || o == end) && o->selectionState() != SelectionNone) { |
| newSelectedObjects.set(o, adoptPtrWillBeNoop(new RenderSelectionInfo(o, true))); |
| RenderBlock* cb = o->containingBlock(); |
| while (cb && !cb->isRenderView()) { |
| OwnPtrWillBeMember<RenderBlockSelectionInfo>& blockInfo = newSelectedBlocks.add(cb, nullptr).storedValue->value; |
| if (blockInfo) |
| break; |
| blockInfo = adoptPtrWillBeNoop(new RenderBlockSelectionInfo(cb)); |
| cb = cb->containingBlock(); |
| } |
| } |
| |
| o = getNextOrPrevRenderObjectBasedOnDirection(o, stop, continueExploring, exploringBackwards); |
| } |
| |
| if (!m_frameView || blockPaintInvalidationMode == PaintInvalidationNothing) |
| return; |
| |
| // For querying RenderLayer::compositingState() |
| // FIXME: this is wrong, selection should not cause eager invalidation. crbug.com/407416 |
| DisableCompositingQueryAsserts disabler; |
| |
| // Have any of the old selected objects changed compared to the new selection? |
| for (SelectedObjectMap::iterator i = oldSelectedObjects.begin(); i != oldObjectsEnd; ++i) { |
| RenderObject* obj = i->key; |
| RenderSelectionInfo* newInfo = newSelectedObjects.get(obj); |
| RenderSelectionInfo* oldInfo = i->value.get(); |
| if (!newInfo || oldInfo->rect() != newInfo->rect() || oldInfo->state() != newInfo->state() || |
| (m_selectionStart == obj && oldStartPos != m_selectionStartPos) || |
| (m_selectionEnd == obj && oldEndPos != m_selectionEndPos)) { |
| oldInfo->invalidatePaint(); |
| if (newInfo) { |
| newInfo->invalidatePaint(); |
| newSelectedObjects.remove(obj); |
| } |
| } |
| } |
| |
| // Any new objects that remain were not found in the old objects dict, and so they need to be updated. |
| SelectedObjectMap::iterator newObjectsEnd = newSelectedObjects.end(); |
| for (SelectedObjectMap::iterator i = newSelectedObjects.begin(); i != newObjectsEnd; ++i) |
| i->value->invalidatePaint(); |
| |
| // Have any of the old blocks changed? |
| SelectedBlockMap::iterator oldBlocksEnd = oldSelectedBlocks.end(); |
| for (SelectedBlockMap::iterator i = oldSelectedBlocks.begin(); i != oldBlocksEnd; ++i) { |
| RenderBlock* block = i->key; |
| RenderBlockSelectionInfo* newInfo = newSelectedBlocks.get(block); |
| RenderBlockSelectionInfo* oldInfo = i->value.get(); |
| if (!newInfo || oldInfo->rects() != newInfo->rects() || oldInfo->state() != newInfo->state()) { |
| oldInfo->invalidatePaint(); |
| if (newInfo) { |
| newInfo->invalidatePaint(); |
| newSelectedBlocks.remove(block); |
| } |
| } |
| } |
| |
| // Any new blocks that remain were not found in the old blocks dict, and so they need to be updated. |
| SelectedBlockMap::iterator newBlocksEnd = newSelectedBlocks.end(); |
| for (SelectedBlockMap::iterator i = newSelectedBlocks.begin(); i != newBlocksEnd; ++i) |
| i->value->invalidatePaint(); |
| } |
| |
| void RenderView::getSelection(RenderObject*& startRenderer, int& startOffset, RenderObject*& endRenderer, int& endOffset) const |
| { |
| startRenderer = m_selectionStart; |
| startOffset = m_selectionStartPos; |
| endRenderer = m_selectionEnd; |
| endOffset = m_selectionEndPos; |
| } |
| |
| void RenderView::clearSelection() |
| { |
| // For querying RenderLayer::compositingState() |
| // This is correct, since destroying render objects needs to cause eager paint invalidations. |
| DisableCompositingQueryAsserts disabler; |
| |
| layer()->invalidatePaintForBlockSelectionGaps(); |
| setSelection(0, -1, 0, -1, PaintInvalidationNewMinusOld); |
| } |
| |
| void RenderView::selectionStartEnd(int& startPos, int& endPos) const |
| { |
| startPos = m_selectionStartPos; |
| endPos = m_selectionEndPos; |
| } |
| |
| LayoutRect RenderView::viewRect() const |
| { |
| if (m_frameView) |
| return m_frameView->visibleContentRect(); |
| return LayoutRect(); |
| } |
| |
| IntRect RenderView::unscaledDocumentRect() const |
| { |
| LayoutRect overflowRect(layoutOverflowRect()); |
| flipForWritingMode(overflowRect); |
| return pixelSnappedIntRect(overflowRect); |
| } |
| |
| bool RenderView::rootBackgroundIsEntirelyFixed() const |
| { |
| if (RenderObject* backgroundRenderer = this->backgroundRenderer()) |
| return backgroundRenderer->hasEntirelyFixedBackground(); |
| return false; |
| } |
| |
| RenderObject* RenderView::backgroundRenderer() const |
| { |
| if (Element* documentElement = document().documentElement()) |
| return documentElement->renderer(); |
| return 0; |
| } |
| |
| LayoutRect RenderView::backgroundRect(RenderBox* backgroundRenderer) const |
| { |
| return unscaledDocumentRect(); |
| } |
| |
| IntRect RenderView::documentRect() const |
| { |
| FloatRect overflowRect(unscaledDocumentRect()); |
| if (hasTransform()) |
| overflowRect = layer()->currentTransform().mapRect(overflowRect); |
| return IntRect(overflowRect); |
| } |
| |
| int RenderView::viewHeight(IncludeScrollbarsInRect scrollbarInclusion) const |
| { |
| if (m_frameView) |
| return m_frameView->layoutSize(scrollbarInclusion).height(); |
| return 0; |
| } |
| |
| int RenderView::viewWidth(IncludeScrollbarsInRect scrollbarInclusion) const |
| { |
| if (m_frameView) |
| return m_frameView->layoutSize(scrollbarInclusion).width(); |
| return 0; |
| } |
| |
| int RenderView::viewLogicalHeight() const |
| { |
| return style()->isHorizontalWritingMode() ? viewHeight(ExcludeScrollbars) : viewWidth(ExcludeScrollbars); |
| } |
| |
| LayoutUnit RenderView::viewLogicalHeightForPercentages() const |
| { |
| return viewLogicalHeight(); |
| } |
| |
| float RenderView::zoomFactor() const |
| { |
| return m_frameView->frame().pageZoomFactor(); |
| } |
| |
| void RenderView::updateHitTestResult(HitTestResult& result, const LayoutPoint& point) |
| { |
| if (result.innerNode()) |
| return; |
| |
| Node* node = document().documentElement(); |
| if (node) { |
| result.setInnerNode(node); |
| if (!result.innerNonSharedNode()) |
| result.setInnerNonSharedNode(node); |
| |
| LayoutPoint adjustedPoint = point; |
| offsetForContents(adjustedPoint); |
| |
| result.setLocalPoint(adjustedPoint); |
| } |
| } |
| |
| bool RenderView::usesCompositing() const |
| { |
| return m_compositor && m_compositor->staleInCompositingMode(); |
| } |
| |
| RenderLayerCompositor* RenderView::compositor() |
| { |
| if (!m_compositor) |
| m_compositor = adoptPtr(new RenderLayerCompositor(*this)); |
| |
| return m_compositor.get(); |
| } |
| |
| void RenderView::setIsInWindow(bool isInWindow) |
| { |
| if (m_compositor) |
| m_compositor->setIsInWindow(isInWindow); |
| } |
| |
| void RenderView::pushLayoutState(LayoutState& layoutState) |
| { |
| m_layoutState = &layoutState; |
| } |
| |
| void RenderView::popLayoutState() |
| { |
| ASSERT(m_layoutState); |
| m_layoutState = m_layoutState->next(); |
| } |
| |
| IntervalArena* RenderView::intervalArena() |
| { |
| if (!m_intervalArena) |
| m_intervalArena = IntervalArena::create(); |
| return m_intervalArena.get(); |
| } |
| |
| bool RenderView::backgroundIsKnownToBeOpaqueInRect(const LayoutRect&) const |
| { |
| return m_frameView->hasOpaqueBackground(); |
| } |
| |
| double RenderView::layoutViewportWidth() const |
| { |
| float scale = m_frameView ? m_frameView->frame().pageZoomFactor() : 1; |
| return viewWidth(IncludeScrollbars) / scale; |
| } |
| |
| double RenderView::layoutViewportHeight() const |
| { |
| float scale = m_frameView ? m_frameView->frame().pageZoomFactor() : 1; |
| return viewHeight(IncludeScrollbars) / scale; |
| } |
| |
| } // namespace blink |
