117 lines
3.9 KiB
C++
117 lines
3.9 KiB
C++
/*
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* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
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* Copyright (C) 2004, 2005, 2006, 2009, 2010, 2013 Apple Inc. 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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#pragma once
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#include "HTMLFrameOwnerElement.h"
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#include "OverlapTestRequestClient.h"
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#include "RenderReplaced.h"
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#include "Widget.h"
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namespace WebCore {
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class WidgetHierarchyUpdatesSuspensionScope {
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public:
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WidgetHierarchyUpdatesSuspensionScope()
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{
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s_widgetHierarchyUpdateSuspendCount++;
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}
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~WidgetHierarchyUpdatesSuspensionScope()
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{
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ASSERT(s_widgetHierarchyUpdateSuspendCount);
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if (s_widgetHierarchyUpdateSuspendCount == 1)
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moveWidgets();
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s_widgetHierarchyUpdateSuspendCount--;
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}
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static bool isSuspended() { return s_widgetHierarchyUpdateSuspendCount; }
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static void scheduleWidgetToMove(Widget& widget, FrameView* frame) { widgetNewParentMap().set(&widget, frame); }
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private:
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using WidgetToParentMap = HashMap<RefPtr<Widget>, FrameView*>;
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static WidgetToParentMap& widgetNewParentMap();
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WEBCORE_EXPORT void moveWidgets();
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WEBCORE_EXPORT static unsigned s_widgetHierarchyUpdateSuspendCount;
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};
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class RenderWidget : public RenderReplaced, private OverlapTestRequestClient {
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WTF_MAKE_ISO_ALLOCATED(RenderWidget);
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public:
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virtual ~RenderWidget();
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HTMLFrameOwnerElement& frameOwnerElement() const { return downcast<HTMLFrameOwnerElement>(nodeForNonAnonymous()); }
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Widget* widget() const { return m_widget.get(); }
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WEBCORE_EXPORT void setWidget(RefPtr<Widget>&&);
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static RenderWidget* find(const Widget&);
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enum class ChildWidgetState { Valid, Destroyed };
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ChildWidgetState updateWidgetPosition() WARN_UNUSED_RETURN;
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WEBCORE_EXPORT IntRect windowClipRect() const;
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bool requiresAcceleratedCompositing() const;
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void ref() { ++m_refCount; }
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void deref();
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protected:
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RenderWidget(HTMLFrameOwnerElement&, RenderStyle&&);
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void willBeDestroyed() override;
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void styleDidChange(StyleDifference, const RenderStyle* oldStyle) final;
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void layout() override;
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void paint(PaintInfo&, const LayoutPoint&) override;
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bool nodeAtPoint(const HitTestRequest&, HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction) override;
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virtual void paintContents(PaintInfo&, const LayoutPoint&);
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bool requiresLayer() const override;
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private:
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void element() const = delete;
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bool isWidget() const final { return true; }
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bool needsPreferredWidthsRecalculation() const final;
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RenderBox* embeddedContentBox() const final;
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void setSelectionState(HighlightState) final;
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void setOverlapTestResult(bool) final;
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bool setWidgetGeometry(const LayoutRect&);
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bool updateWidgetGeometry();
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RefPtr<Widget> m_widget;
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IntRect m_clipRect; // The rectangle needs to remain correct after scrolling, so it is stored in content view coordinates, and not clipped to window.
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unsigned m_refCount { 1 };
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};
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inline void RenderWidget::deref()
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{
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ASSERT(m_refCount);
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if (!--m_refCount)
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delete this;
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}
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} // namespace WebCore
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SPECIALIZE_TYPE_TRAITS_RENDER_OBJECT(RenderWidget, isWidget())
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