WebKit merge 40668:40722 part 1.

third_party/WebKit/WebCore/page/FrameView.h

Index: third_party/WebKit/WebCore/page/FrameView.h
===================================================================
--- third_party/WebKit/WebCore/page/FrameView.h	(revision 9310)
+++ third_party/WebKit/WebCore/page/FrameView.h	(working copy)
@@ -1,274 +1,273 @@
-/*
-   Copyright (C) 1997 Martin Jones (mjones@kde.org)
-             (C) 1998 Waldo Bastian (bastian@kde.org)
-             (C) 1998, 1999 Torben Weis (weis@kde.org)
-             (C) 1999 Lars Knoll (knoll@kde.org)
-             (C) 1999 Antti Koivisto (koivisto@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.
-*/
-
-#ifndef FrameView_h
-#define FrameView_h
-
-#include "IntSize.h"
-#include "RenderLayer.h"
-#include "ScrollView.h"
-#include <wtf/Forward.h>
-#include <wtf/OwnPtr.h>
-
-namespace WebCore {
-
-class Color;
-class Event;
-class EventTargetNode;
-class Frame;
-class FrameViewPrivate;
-class IntRect;
-class Node;
-class PlatformMouseEvent;
-class RenderLayer;
-class RenderObject;
-class RenderPartObject;
-class ScheduledEvent;
-class String;
-
-template <typename T> class Timer;
-
-class FrameView : public ScrollView {
-public:
-    friend class RenderView;
-
-    FrameView(Frame*);
-    FrameView(Frame*, const IntSize& initialSize);
-
-    virtual ~FrameView();
-
-    virtual HostWindow* hostWindow() const;
-    
-    virtual void invalidateRect(const IntRect&);
-
-    Frame* frame() const { return m_frame.get(); }
-    void clearFrame();
-
-    void ref() { ++m_refCount; }
-    void deref() { if (!--m_refCount) delete this; }
-    bool hasOneRef() { return m_refCount == 1; }
-
-    int marginWidth() const { return m_margins.width(); } // -1 means default
-    int marginHeight() const { return m_margins.height(); } // -1 means default
-    void setMarginWidth(int);
-    void setMarginHeight(int);
-
-    virtual void setCanHaveScrollbars(bool);
-
-    virtual PassRefPtr<Scrollbar> createScrollbar(ScrollbarOrientation);
-
-    virtual void setContentsSize(const IntSize&);
-
-    void layout(bool allowSubtree = true);
-    bool didFirstLayout() const;
-    void layoutTimerFired(Timer<FrameView>*);
-    void scheduleRelayout();
-    void scheduleRelayoutOfSubtree(RenderObject*);
-    void unscheduleRelayout();
-    bool layoutPending() const;
-
-    RenderObject* layoutRoot(bool onlyDuringLayout = false) const;
-    int layoutCount() const { return m_layoutCount; }
-
-    // These two helper functions just pass through to the RenderView.
-    bool needsLayout() const;
-    void setNeedsLayout();
-
-    bool needsFullRepaint() const { return m_doFullRepaint; }
-
-#if USE(ACCELERATED_COMPOSITING)
-    enum CompositingUpdate { NormalCompositingUpdate, ForcedCompositingUpdate };
-    void updateCompositingLayers(CompositingUpdate updateType = NormalCompositingUpdate);
-
-    // Called when changes to the GraphicsLayer hierarchy have to be synchronized with
-    // content rendered via the normal painting path.
-    void setNeedsOneShotDrawingSynchronization();
-#endif
-
-    void didMoveOnscreen();
-    void willMoveOffscreen();
-
-    void resetScrollbars();
-
-    void clear();
-
-    bool isTransparent() const;
-    void setTransparent(bool isTransparent);
-
-    Color baseBackgroundColor() const;
-    void setBaseBackgroundColor(Color);
-    void updateBackgroundRecursively(const Color&, bool);
-
-    bool shouldUpdateWhileOffscreen() const;
-    void setShouldUpdateWhileOffscreen(bool);
-
-    void adjustViewSize();
-    void initScrollbars();
-    void updateDefaultScrollbarState();
-    
-    virtual IntRect windowClipRect(bool clipToContents = true) const;
-    IntRect windowClipRectForLayer(const RenderLayer*, bool clipToLayerContents) const;
-
-    virtual bool isActive() const;
-    virtual void invalidateScrollbarRect(Scrollbar*, const IntRect&);
-    virtual void valueChanged(Scrollbar*);
-    virtual void getTickmarks(Vector<IntRect>&) const;
-
-    virtual IntRect windowResizerRect() const;
-
-    virtual void scrollRectIntoViewRecursively(const IntRect&);
-    virtual void setScrollPosition(const IntPoint&);
-
-    String mediaType() const;
-    void setMediaType(const String&);
-
-    void setUseSlowRepaints();
-
-    void addSlowRepaintObject();
-    void removeSlowRepaintObject();
-
-    void beginDeferredRepaints();
-    void endDeferredRepaints();
-
-#if ENABLE(DASHBOARD_SUPPORT)
-    void updateDashboardRegions();
-#endif
-    void updateControlTints();
-
-    void restoreScrollbar();
-
-    void scheduleEvent(PassRefPtr<Event>, PassRefPtr<EventTargetNode>);
-    void pauseScheduledEvents();
-    void resumeScheduledEvents();
-    void postLayoutTimerFired(Timer<FrameView>*);
-
-    bool wasScrolledByUser() const;
-    void setWasScrolledByUser(bool);
-
-    void addWidgetToUpdate(RenderPartObject*);
-    void removeWidgetToUpdate(RenderPartObject*);
-
-    virtual void paintContents(GraphicsContext*, const IntRect& damageRect);
-    void setPaintRestriction(PaintRestriction);
-    bool isPainting() const;
-    void setNodeToDraw(Node*);
-
-    static double currentPaintTimeStamp() { return sCurrentPaintTimeStamp; } // returns 0 if not painting
-    
-    void layoutIfNeededRecursive();
-
-    void setIsVisuallyNonEmpty() { m_isVisuallyNonEmpty = true; }
-
-    void forceLayout(bool allowSubtree = false);
-    void forceLayoutWithPageWidthRange(float minPageWidth, float maxPageWidth, bool adjustViewSize);
-
-    void adjustPageHeight(float* newBottom, float oldTop, float oldBottom, float bottomLimit);
-
-
-private:
-    void reset();
-    void init();
-
-    virtual bool isFrameView() const;
-
-    bool useSlowRepaints() const;
-
-    void applyOverflowToViewport(RenderObject*, ScrollbarMode& hMode, ScrollbarMode& vMode);
-
-    void updateOverflowStatus(bool horizontalOverflow, bool verticalOverflow);
-
-    void dispatchScheduledEvents();
-    void performPostLayoutTasks();
-
-    virtual void repaintContentRectangle(const IntRect&, bool immediate);
-    virtual void contentsResized() { setNeedsLayout(); }
-    virtual void visibleContentsResized() { layout(); }
-
-    static double sCurrentPaintTimeStamp; // used for detecting decoded resource thrash in the cache
-
-    unsigned m_refCount;
-    IntSize m_size;
-    IntSize m_margins;
-    OwnPtr<HashSet<RenderPartObject*> > m_widgetUpdateSet;
-    RefPtr<Frame> m_frame;
-
-    bool m_doFullRepaint;
-    
-    ScrollbarMode m_vmode;
-    ScrollbarMode m_hmode;
-    bool m_useSlowRepaints;
-    unsigned m_slowRepaintObjectCount;
-
-    int m_borderX, m_borderY;
-
-    Timer<FrameView> m_layoutTimer;
-    bool m_delayedLayout;
-    RenderObject* m_layoutRoot;
-    
-    bool m_layoutSchedulingEnabled;
-    bool m_midLayout;
-    int m_layoutCount;
-    unsigned m_nestedLayoutCount;
-    Timer<FrameView> m_postLayoutTasksTimer;
-    bool m_firstLayoutCallbackPending;
-
-    bool m_firstLayout;
-    bool m_needToInitScrollbars;
-    bool m_isTransparent;
-    Color m_baseBackgroundColor;
-    IntSize m_lastLayoutSize;
-    float m_lastZoomFactor;
-
-    String m_mediaType;
-    
-    unsigned m_enqueueEvents;
-    Vector<ScheduledEvent*> m_scheduledEvents;
-    
-    bool m_overflowStatusDirty;
-    bool m_horizontalOverflow;
-    bool m_verticalOverflow;    
-    RenderObject* m_viewportRenderer;
-
-    bool m_wasScrolledByUser;
-    bool m_inProgrammaticScroll;
-    
-    unsigned m_deferringRepaints;
-    unsigned m_repaintCount;
-    IntRect m_repaintRect;
-    Vector<IntRect> m_repaintRects;
-
-    bool m_shouldUpdateWhileOffscreen;
-
-    RefPtr<Node> m_nodeToDraw;
-    PaintRestriction m_paintRestriction;
-    bool m_isPainting;
-
-    bool m_isVisuallyNonEmpty;
-    bool m_firstVisuallyNonEmptyLayoutCallbackPending;
-};
-
-} // namespace WebCore
-
-#endif // FrameView_h
-
+/*
+   Copyright (C) 1997 Martin Jones (mjones@kde.org)
+             (C) 1998 Waldo Bastian (bastian@kde.org)
+             (C) 1998, 1999 Torben Weis (weis@kde.org)
+             (C) 1999 Lars Knoll (knoll@kde.org)
+             (C) 1999 Antti Koivisto (koivisto@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.
+*/
+
+#ifndef FrameView_h
+#define FrameView_h
+
+#include "IntSize.h"
+#include "RenderLayer.h"
+#include "ScrollView.h"
+#include <wtf/Forward.h>
+#include <wtf/OwnPtr.h>
+
+namespace WebCore {
+
+class Color;
+class Event;
+class Frame;
+class FrameViewPrivate;
+class IntRect;
+class Node;
+class PlatformMouseEvent;
+class RenderLayer;
+class RenderObject;
+class RenderPartObject;
+class ScheduledEvent;
+class String;
+
+template <typename T> class Timer;
+
+class FrameView : public ScrollView {
+public:
+    friend class RenderView;
+
+    FrameView(Frame*);
+    FrameView(Frame*, const IntSize& initialSize);
+
+    virtual ~FrameView();
+
+    virtual HostWindow* hostWindow() const;
+    
+    virtual void invalidateRect(const IntRect&);
+
+    Frame* frame() const { return m_frame.get(); }
+    void clearFrame();
+
+    void ref() { ++m_refCount; }
+    void deref() { if (!--m_refCount) delete this; }
+    bool hasOneRef() { return m_refCount == 1; }
+
+    int marginWidth() const { return m_margins.width(); } // -1 means default
+    int marginHeight() const { return m_margins.height(); } // -1 means default
+    void setMarginWidth(int);
+    void setMarginHeight(int);
+
+    virtual void setCanHaveScrollbars(bool);
+
+    virtual PassRefPtr<Scrollbar> createScrollbar(ScrollbarOrientation);
+
+    virtual void setContentsSize(const IntSize&);
+
+    void layout(bool allowSubtree = true);
+    bool didFirstLayout() const;
+    void layoutTimerFired(Timer<FrameView>*);
+    void scheduleRelayout();
+    void scheduleRelayoutOfSubtree(RenderObject*);
+    void unscheduleRelayout();
+    bool layoutPending() const;
+
+    RenderObject* layoutRoot(bool onlyDuringLayout = false) const;
+    int layoutCount() const { return m_layoutCount; }
+
+    // These two helper functions just pass through to the RenderView.
+    bool needsLayout() const;
+    void setNeedsLayout();
+
+    bool needsFullRepaint() const { return m_doFullRepaint; }
+
+#if USE(ACCELERATED_COMPOSITING)
+    enum CompositingUpdate { NormalCompositingUpdate, ForcedCompositingUpdate };
+    void updateCompositingLayers(CompositingUpdate updateType = NormalCompositingUpdate);
+
+    // Called when changes to the GraphicsLayer hierarchy have to be synchronized with
+    // content rendered via the normal painting path.
+    void setNeedsOneShotDrawingSynchronization();
+#endif
+
+    void didMoveOnscreen();
+    void willMoveOffscreen();
+
+    void resetScrollbars();
+
+    void clear();
+
+    bool isTransparent() const;
+    void setTransparent(bool isTransparent);
+
+    Color baseBackgroundColor() const;
+    void setBaseBackgroundColor(Color);
+    void updateBackgroundRecursively(const Color&, bool);
+
+    bool shouldUpdateWhileOffscreen() const;
+    void setShouldUpdateWhileOffscreen(bool);
+
+    void adjustViewSize();
+    void initScrollbars();
+    void updateDefaultScrollbarState();
+    
+    virtual IntRect windowClipRect(bool clipToContents = true) const;
+    IntRect windowClipRectForLayer(const RenderLayer*, bool clipToLayerContents) const;
+
+    virtual bool isActive() const;
+    virtual void invalidateScrollbarRect(Scrollbar*, const IntRect&);
+    virtual void valueChanged(Scrollbar*);
+    virtual void getTickmarks(Vector<IntRect>&) const;
+
+    virtual IntRect windowResizerRect() const;
+
+    virtual void scrollRectIntoViewRecursively(const IntRect&);
+    virtual void setScrollPosition(const IntPoint&);
+
+    String mediaType() const;
+    void setMediaType(const String&);
+
+    void setUseSlowRepaints();
+
+    void addSlowRepaintObject();
+    void removeSlowRepaintObject();
+
+    void beginDeferredRepaints();
+    void endDeferredRepaints();
+
+#if ENABLE(DASHBOARD_SUPPORT)
+    void updateDashboardRegions();
+#endif
+    void updateControlTints();
+
+    void restoreScrollbar();
+
+    void scheduleEvent(PassRefPtr<Event>, PassRefPtr<Node>);
+    void pauseScheduledEvents();
+    void resumeScheduledEvents();
+    void postLayoutTimerFired(Timer<FrameView>*);
+
+    bool wasScrolledByUser() const;
+    void setWasScrolledByUser(bool);
+
+    void addWidgetToUpdate(RenderPartObject*);
+    void removeWidgetToUpdate(RenderPartObject*);
+
+    virtual void paintContents(GraphicsContext*, const IntRect& damageRect);
+    void setPaintRestriction(PaintRestriction);
+    bool isPainting() const;
+    void setNodeToDraw(Node*);
+
+    static double currentPaintTimeStamp() { return sCurrentPaintTimeStamp; } // returns 0 if not painting
+    
+    void layoutIfNeededRecursive();
+
+    void setIsVisuallyNonEmpty() { m_isVisuallyNonEmpty = true; }
+
+    void forceLayout(bool allowSubtree = false);
+    void forceLayoutWithPageWidthRange(float minPageWidth, float maxPageWidth, bool adjustViewSize);
+
+    void adjustPageHeight(float* newBottom, float oldTop, float oldBottom, float bottomLimit);
+
+
+private:
+    void reset();
+    void init();
+
+    virtual bool isFrameView() const;
+
+    bool useSlowRepaints() const;
+
+    void applyOverflowToViewport(RenderObject*, ScrollbarMode& hMode, ScrollbarMode& vMode);
+
+    void updateOverflowStatus(bool horizontalOverflow, bool verticalOverflow);
+
+    void dispatchScheduledEvents();
+    void performPostLayoutTasks();
+
+    virtual void repaintContentRectangle(const IntRect&, bool immediate);
+    virtual void contentsResized() { setNeedsLayout(); }
+    virtual void visibleContentsResized() { layout(); }
+
+    static double sCurrentPaintTimeStamp; // used for detecting decoded resource thrash in the cache
+
+    unsigned m_refCount;
+    IntSize m_size;
+    IntSize m_margins;
+    OwnPtr<HashSet<RenderPartObject*> > m_widgetUpdateSet;
+    RefPtr<Frame> m_frame;
+
+    bool m_doFullRepaint;
+    
+    ScrollbarMode m_vmode;
+    ScrollbarMode m_hmode;
+    bool m_useSlowRepaints;
+    unsigned m_slowRepaintObjectCount;
+
+    int m_borderX, m_borderY;
+
+    Timer<FrameView> m_layoutTimer;
+    bool m_delayedLayout;
+    RenderObject* m_layoutRoot;
+    
+    bool m_layoutSchedulingEnabled;
+    bool m_midLayout;
+    int m_layoutCount;
+    unsigned m_nestedLayoutCount;
+    Timer<FrameView> m_postLayoutTasksTimer;
+    bool m_firstLayoutCallbackPending;
+
+    bool m_firstLayout;
+    bool m_needToInitScrollbars;
+    bool m_isTransparent;
+    Color m_baseBackgroundColor;
+    IntSize m_lastLayoutSize;
+    float m_lastZoomFactor;
+
+    String m_mediaType;
+    
+    unsigned m_enqueueEvents;
+    Vector<ScheduledEvent*> m_scheduledEvents;
+    
+    bool m_overflowStatusDirty;
+    bool m_horizontalOverflow;
+    bool m_verticalOverflow;    
+    RenderObject* m_viewportRenderer;
+
+    bool m_wasScrolledByUser;
+    bool m_inProgrammaticScroll;
+    
+    unsigned m_deferringRepaints;
+    unsigned m_repaintCount;
+    IntRect m_repaintRect;
+    Vector<IntRect> m_repaintRects;
+
+    bool m_shouldUpdateWhileOffscreen;
+
+    RefPtr<Node> m_nodeToDraw;
+    PaintRestriction m_paintRestriction;
+    bool m_isPainting;
+
+    bool m_isVisuallyNonEmpty;
+    bool m_firstVisuallyNonEmptyLayoutCallbackPending;
+};
+
+} // namespace WebCore
+
+#endif // FrameView_h
+