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f45642cf8c
We only allow overflow scrolling. The frame isn't special. This is a first step in making that happen. There's a lot of code to remove after this patch, but this gets rid of ScrollView and a bunch of frame-level scrolling code. Had to add in a FrameWidget class so that Scrollbar.cpp had a way of getting to FrameView::removeChild without pulling a core class into platform. This might go away when we rip out the Widget tree if we made it so that FrameView didn't keep a list of Scrollbar instances. Modified scrollbar.html to use overflow scrolling instead of frame level scrolling. Once we get rid of the split between Document and documentElement, we'll be able to make the root element in the page scrollable as well (i.e. any child of the Document). R=abarth@chromium.org Review URL: https://codereview.chromium.org/646273006
101 lines
3.4 KiB
C++
101 lines
3.4 KiB
C++
/*
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* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
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* (C) 2000 Simon Hausmann <hausmann@kde.org>
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* (C) 2000 Stefan Schimanski (1Stein@gmx.de)
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* Copyright (C) 2004, 2005, 2006, 2009 Apple Inc. All rights reserved.
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* Copyright (C) Research In Motion Limited 2011. All rights reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*
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*/
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#include "config.h"
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#include "core/rendering/RenderPart.h"
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#include "core/frame/FrameView.h"
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#include "core/frame/LocalFrame.h"
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#include "core/rendering/HitTestResult.h"
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#include "core/rendering/RenderLayer.h"
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#include "core/rendering/RenderView.h"
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namespace blink {
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RenderPart::RenderPart(Element* node)
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: RenderWidget(node)
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{
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setInline(false);
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}
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RenderPart::~RenderPart()
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{
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}
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LayerType RenderPart::layerTypeRequired() const
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{
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LayerType type = RenderWidget::layerTypeRequired();
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if (type != NoLayer)
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return type;
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return ForcedLayer;
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}
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bool RenderPart::requiresAcceleratedCompositing() const
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{
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return false;
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}
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bool RenderPart::needsPreferredWidthsRecalculation() const
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{
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return RenderWidget::needsPreferredWidthsRecalculation();
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}
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bool RenderPart::nodeAtPoint(const HitTestRequest& request, HitTestResult& result, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction action)
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{
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if (!widget() || !widget()->isFrameView() || !request.allowsChildFrameContent())
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return RenderWidget::nodeAtPoint(request, result, locationInContainer, accumulatedOffset, action);
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FrameView* childFrameView = toFrameView(widget());
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RenderView* childRoot = childFrameView->renderView();
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if (childRoot) {
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LayoutPoint adjustedLocation = accumulatedOffset + location();
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LayoutPoint contentOffset = LayoutPoint(borderLeft() + paddingLeft(), borderTop() + paddingTop()) - childFrameView->scrollOffset();
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HitTestLocation newHitTestLocation(locationInContainer, -adjustedLocation - contentOffset);
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HitTestRequest newHitTestRequest(request.type() | HitTestRequest::ChildFrameHitTest);
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HitTestResult childFrameResult(newHitTestLocation);
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bool isInsideChildFrame = childRoot->hitTest(newHitTestRequest, newHitTestLocation, childFrameResult);
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if (newHitTestLocation.isRectBasedTest())
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result.append(childFrameResult);
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else if (isInsideChildFrame)
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result = childFrameResult;
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if (isInsideChildFrame)
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return true;
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}
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return RenderWidget::nodeAtPoint(request, result, locationInContainer, accumulatedOffset, action);
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}
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CompositingReasons RenderPart::additionalCompositingReasons() const
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{
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if (requiresAcceleratedCompositing())
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return CompositingReasonIFrame;
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return CompositingReasonNone;
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}
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}
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