Calculate paint invalidation rect for scrollbars

third_party/WebKit/Source/core/frame/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
@@ skipping 13 matching lines @@
 
 #ifndef FrameView_h
 #define FrameView_h
 
 #include "core/CoreExport.h"
 #include "core/dom/DocumentLifecycle.h"
 #include "core/frame/FrameViewAutoSizeInfo.h"
 #include "core/frame/LayoutSubtreeRootList.h"
 #include "core/frame/RootFrameViewport.h"
 #include "core/layout/LayoutAnalyzer.h"
+#include "core/paint/PaintInvalidationCapableScrollableArea.h"
 #include "core/paint/PaintPhase.h"
 #include "platform/RuntimeEnabledFeatures.h"
 #include "platform/Widget.h"
 #include "platform/geometry/IntRect.h"
 #include "platform/geometry/LayoutRect.h"
 #include "platform/graphics/Color.h"
 #include "platform/graphics/paint/TransformPaintPropertyNode.h"
 #include "platform/scroll/ScrollTypes.h"
-#include "platform/scroll/ScrollableArea.h"
 #include "platform/scroll/Scrollbar.h"
 #include "public/platform/WebDisplayMode.h"
 #include "public/platform/WebRect.h"
 #include "wtf/Allocator.h"
 #include "wtf/Forward.h"
 #include "wtf/HashSet.h"
 #include "wtf/ListHashSet.h"
 #include "wtf/OwnPtr.h"
 #include "wtf/TemporaryChange.h"
 #include "wtf/text/WTFString.h"
@@ skipping 19 matching lines @@
 class LayoutView;
 class PaintInvalidationState;
 class Page;
 class ScrollingCoordinator;
 class TracedValue;
 struct AnnotatedRegionValue;
 struct CompositedSelection;
 
 typedef unsigned long long DOMTimeStamp;
 
-class CORE_EXPORT FrameView final : public Widget, public ScrollableArea {
+class CORE_EXPORT FrameView final : public Widget, public PaintInvalidationCapableScrollableArea {
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(FrameView);
 
     friend class PaintControllerPaintTestBase;
     friend class Internals;
     friend class LayoutPart; // for invalidateTreeIfNeeded
 
 public:
     static PassRefPtrWillBeRawPtr<FrameView> create(LocalFrame*);
     static PassRefPtrWillBeRawPtr<FrameView> create(LocalFrame*, const IntSize& initialSize);
 
@@ skipping 239 matching lines @@
 
     // Sets the tickmarks for the FrameView, overriding the default behavior
     // which is to display the tickmarks corresponding to find results.
     // If |m_tickmarks| is empty, the default behavior is restored.
     void setTickmarks(const Vector<IntRect>& tickmarks)
     {
         m_tickmarks = tickmarks;
         invalidatePaintForTickmarks();
     }
 
-    void invalidatePaintForTickmarks() const;
+    void invalidatePaintForTickmarks();
 
     // Since the compositor can resize the viewport due to top controls and
     // commit scroll offsets before a WebView::resize occurs, we need to adjust
     // our scroll extents to prevent clamping the scroll offsets.
     void setTopControlsViewportAdjustment(float);
     IntSize topControlsSize() const { return IntSize(0, roundf(m_topControlsViewportAdjustment)); }
 
     IntPoint maximumScrollPosition() const override;
 
     // ScrollableArea interface
-    void invalidateScrollbarRect(Scrollbar*, const IntRect&) override;
+    void scrollControlWasSetNeedsPaintInvalidation() override { }
     void getTickmarks(Vector<IntRect>&) const override;
     void scrollTo(const DoublePoint&);
     IntRect scrollableAreaBoundingBox() const override;
     bool scrollAnimatorEnabled() const override;
     bool usesCompositedScrolling() const override;
     GraphicsLayer* layerForScrolling() const override;
     GraphicsLayer* layerForHorizontalScrollbar() const override;
     GraphicsLayer* layerForVerticalScrollbar() const override;
     GraphicsLayer* layerForScrollCorner() const override;
     int scrollSize(ScrollbarOrientation) const override;
@@ skipping 19 matching lines @@
     // Functions for child manipulation and inspection.
     void setParent(Widget*) override;
     void removeChild(Widget*);
     void addChild(PassRefPtrWillBeRawPtr<Widget>);
     const ChildrenWidgetSet* children() const { return &m_children; }
 
     // If the scroll view does not use a native widget, then it will have cross-platform Scrollbars. These functions
     // can be used to obtain those scrollbars.
     Scrollbar* horizontalScrollbar() const override { return m_horizontalScrollbar.get(); }
     Scrollbar* verticalScrollbar() const override { return m_verticalScrollbar.get(); }
-    LayoutScrollbarPart* scrollCorner() const { return m_scrollCorner; }
+    LayoutScrollbarPart* scrollCorner() const override { return m_scrollCorner; }
 
     void positionScrollbarLayers();
 
     // Functions for setting and retrieving the scrolling mode in each axis (horizontal/vertical). The mode has values of
     // AlwaysOff, AlwaysOn, and Auto. AlwaysOff means never show a scrollbar, AlwaysOn means always show a scrollbar.
     // Auto means show a scrollbar only when one is needed.
     // Note that for platforms with native widgets, these modes are considered advisory. In other words the underlying native
     // widget may choose not to honor the requested modes.
     void setScrollbarModes(ScrollbarMode horizontalMode, ScrollbarMode verticalMode, bool horizontalLock = false, bool verticalLock = false);
     void setHorizontalScrollbarMode(ScrollbarMode mode, bool lock = false) { setScrollbarModes(mode, verticalScrollbarMode(), lock, verticalScrollbarLock()); }
@@ skipping 32 matching lines @@
     IntSize scrollOffset() const { return toIntSize(visibleContentRect().location()); } // Gets the scrolled position as an IntSize. Convenient for adding to other sizes.
     DoubleSize scrollOffsetDouble() const { return DoubleSize(m_scrollPosition.x(), m_scrollPosition.y()); }
     DoubleSize pendingScrollDelta() const { return m_pendingScrollDelta; }
     IntPoint minimumScrollPosition() const override; // The minimum position we can be scrolled to.
     int scrollX() const { return scrollPosition().x(); }
     int scrollY() const { return scrollPosition().y(); }
 
     // Scroll the actual contents of the view (either blitting or invalidating as needed).
     void scrollContents(const IntSize& scrollDelta);
 
-    // This gives us a means of blocking painting on our scrollbars until the first layout has occurred.
-    void setScrollbarsSuppressed(bool suppressed, bool repaintOnUnsuppress = false);
+    // This gives us a means of blocking updating our scrollbars until the first layout has occurred.
+    void setScrollbarsSuppressed(bool suppressed) { m_scrollbarsSuppressed = suppressed; }
     bool scrollbarsSuppressed() const { return m_scrollbarsSuppressed; }
 
     // Methods for converting between this frame and other coordinate spaces.
     // For definitions and an explanation of the varous spaces, please see:
     // http://www.chromium.org/developers/design-documents/blink-coordinate-spaces
     IntPoint rootFrameToContents(const IntPoint&) const;
     FloatPoint rootFrameToContents(const FloatPoint&) const;
     IntRect rootFrameToContents(const IntRect&) const;
     IntPoint contentsToRootFrame(const IntPoint&) const;
     IntRect contentsToRootFrame(const IntRect&) const;
@@ skipping 124 matching lines @@
     // Scroll the content via the compositor.
     bool scrollContentsFastPath(const IntSize& scrollDelta);
 
     // Scroll the content by invalidating everything.
     void scrollContentsSlowPath(const IntRect& updateRect);
 
     // These functions are used to create/destroy scrollbars.
     void setHasHorizontalScrollbar(bool);
     void setHasVerticalScrollbar(bool);
 
-    void invalidateScrollCornerRect(const IntRect&) override;
     ScrollBehavior scrollBehaviorStyle() const override;
 
     void scrollContentsIfNeeded();
 
     void setScrollOrigin(const IntPoint&, bool updatePositionAtAll, bool updatePositionSynchronously);
 
     enum ComputeScrollbarExistenceOption {
         FirstPass,
         Incremental
     };
@@ skipping 134 matching lines @@
     void collectFrameTimingRequests(GraphicsLayerFrameTimingRequests&);
     void collectFrameTimingRequestsRecursive(GraphicsLayerFrameTimingRequests&);
 
     template <typename Function> void forAllNonThrottledFrameViews(Function);
 
     void setNeedsUpdateViewportIntersection();
     void updateViewportIntersectionsForSubtree();
     void updateViewportIntersectionIfNeeded();
     void notifyIntersectionObservers();
 
+    // PaintInvalidationCapableScrollableArea
+    LayoutBox& boxForScrollControlPaintInvalidation() const override;
+    LayoutScrollbarPart* resizer() const override { return nullptr; }
+
     LayoutSize m_size;
 
     typedef HashSet<RefPtr<LayoutEmbeddedObject>> EmbeddedObjectSet;
     EmbeddedObjectSet m_partUpdateSet;
 
     // FIXME: These are just "children" of the FrameView and should be RefPtrWillBeMember<Widget> instead.
     HashSet<RefPtr<LayoutPart>> m_parts;
 
     // The RefPtr cycle between LocalFrame and FrameView is broken
     // when a LocalFrame is detached by LocalFrame::detach().
@@ skipping 147 matching lines @@
     static const unsigned visualPixelThreshold = 32 * 32;
     if (m_visuallyNonEmptyPixelCount > visualPixelThreshold)
         setIsVisuallyNonEmpty();
 }
 
 DEFINE_TYPE_CASTS(FrameView, Widget, widget, widget->isFrameView(), widget.isFrameView());
 
 } // namespace blink
 
 #endif // FrameView_h