Merge WebKit at r75315: Initial merge by git.

Change-Id: I570314b346ce101c935ed22a626b48c2af266b84

1 files changed, 167 insertions, 0 deletions

diff --git a/Source/WebCore/rendering/RenderBoxModelObject.h b/Source/WebCore/rendering/RenderBoxModelObject.h
new file mode 100644
index 0000000..98e386b
--- /dev/null
+++ b/Source/WebCore/rendering/RenderBoxModelObject.h
@@ -0,0 +1,167 @@
+/*
+ * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
+ *           (C) 1999 Antti Koivisto (koivisto@kde.org)
+ * Copyright (C) 2003, 2006, 2007, 2009 Apple Inc. All rights reserved.
+ * Copyright (C) 2010 Google 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 RenderBoxModelObject_h
+#define RenderBoxModelObject_h
+
+#include "RenderObject.h"
+
+namespace WebCore {
+
+// Modes for some of the line-related functions.
+enum LinePositionMode { PositionOnContainingLine, PositionOfInteriorLineBoxes };
+enum LineDirectionMode { HorizontalLine, VerticalLine };
+
+// This class is the base for all objects that adhere to the CSS box model as described
+// at http://www.w3.org/TR/CSS21/box.html
+
+class RenderBoxModelObject : public RenderObject {
+public:
+    RenderBoxModelObject(Node*);
+    virtual ~RenderBoxModelObject();
+    
+    virtual void destroy();
+
+    int relativePositionOffsetX() const;
+    int relativePositionOffsetY() const;
+    IntSize relativePositionOffset() const { return IntSize(relativePositionOffsetX(), relativePositionOffsetY()); }
+    IntSize relativePositionLogicalOffset() const { return style()->isHorizontalWritingMode() ? relativePositionOffset() : relativePositionOffset().transposedSize(); }
+
+    // IE extensions. Used to calculate offsetWidth/Height.  Overridden by inlines (RenderFlow)
+    // to return the remaining width on a given line (and the height of a single line).
+    virtual int offsetLeft() const;
+    virtual int offsetTop() const;
+    virtual int offsetWidth() const = 0;
+    virtual int offsetHeight() const = 0;
+
+    virtual void styleWillChange(StyleDifference, const RenderStyle* newStyle);
+    virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle);
+    virtual void updateBoxModelInfoFromStyle();
+
+    bool hasSelfPaintingLayer() const;
+    RenderLayer* layer() const { return m_layer; }
+    virtual bool requiresLayer() const { return isRoot() || isPositioned() || isRelPositioned() || isTransparent() || hasOverflowClip() || hasTransform() || hasMask() || hasReflection() || style()->specifiesColumns(); }
+
+    // This will work on inlines to return the bounding box of all of the lines' border boxes.
+    virtual IntRect borderBoundingBox() const = 0;
+
+    // Virtual since table cells override
+    virtual int paddingTop(bool includeIntrinsicPadding = true) const;
+    virtual int paddingBottom(bool includeIntrinsicPadding = true) const;
+    virtual int paddingLeft(bool includeIntrinsicPadding = true) const;
+    virtual int paddingRight(bool includeIntrinsicPadding = true) const;
+    virtual int paddingBefore(bool includeIntrinsicPadding = true) const;
+    virtual int paddingAfter(bool includeIntrinsicPadding = true) const;
+    virtual int paddingStart(bool includeIntrinsicPadding = true) const;
+    virtual int paddingEnd(bool includeIntrinsicPadding = true) const;
+
+    virtual int borderTop() const { return style()->borderTopWidth(); }
+    virtual int borderBottom() const { return style()->borderBottomWidth(); }
+    virtual int borderLeft() const { return style()->borderLeftWidth(); }
+    virtual int borderRight() const { return style()->borderRightWidth(); }
+    virtual int borderBefore() const { return style()->borderBeforeWidth(); }
+    virtual int borderAfter() const { return style()->borderAfterWidth(); }
+    virtual int borderStart() const { return style()->borderStartWidth(); }
+    virtual int borderEnd() const { return style()->borderEndWidth(); }
+
+    int borderAndPaddingHeight() const { return borderTop() + borderBottom() + paddingTop() + paddingBottom(); }
+    int borderAndPaddingWidth() const { return borderLeft() + borderRight() + paddingLeft() + paddingRight(); }
+    int borderAndPaddingLogicalHeight() const { return borderBefore() + borderAfter() + paddingBefore() + paddingAfter(); }
+    int borderAndPaddingLogicalWidth() const { return borderStart() + borderEnd() + paddingStart() + paddingEnd(); }
+
+    virtual int marginTop() const = 0;
+    virtual int marginBottom() const = 0;
+    virtual int marginLeft() const = 0;
+    virtual int marginRight() const = 0;
+    virtual int marginBefore() const = 0;
+    virtual int marginAfter() const = 0;
+    virtual int marginStart() const = 0;
+    virtual int marginEnd() const = 0;
+
+    bool hasInlineDirectionBordersPaddingOrMargin() const { return hasInlineDirectionBordersOrPadding() || marginStart()|| marginEnd(); }
+    bool hasInlineDirectionBordersOrPadding() const { return borderStart() || borderEnd() || paddingStart()|| paddingEnd(); }
+
+    virtual int containingBlockLogicalWidthForContent() const;
+
+    virtual void childBecameNonInline(RenderObject* /*child*/) { }
+
+    void paintBorder(GraphicsContext*, int tx, int ty, int w, int h, const RenderStyle*, bool includeLogicalLeftEdge = true, bool includeLogicalRightEdge = true);
+    bool paintNinePieceImage(GraphicsContext*, int tx, int ty, int w, int h, const RenderStyle*, const NinePieceImage&, CompositeOperator = CompositeSourceOver);
+    void paintBoxShadow(GraphicsContext*, int tx, int ty, int w, int h, const RenderStyle*, ShadowStyle, bool includeLogicalLeftEdge = true, bool includeLogicalRightEdge = true);
+    void paintFillLayerExtended(const PaintInfo&, const Color&, const FillLayer*, int tx, int ty, int width, int height, InlineFlowBox* = 0, CompositeOperator = CompositeSourceOver, RenderObject* backgroundObject = 0);
+    
+    // Overridden by subclasses to determine line height and baseline position.
+    virtual int lineHeight(bool firstLine, LineDirectionMode, LinePositionMode = PositionOnContainingLine) const = 0;
+    virtual int baselinePosition(FontBaseline, bool firstLine, LineDirectionMode, LinePositionMode = PositionOnContainingLine) const = 0;
+
+    // Called by RenderObject::destroy() (and RenderWidget::destroy()) and is the only way layers should ever be destroyed
+    void destroyLayer();
+
+    void highQualityRepaintTimerFired(Timer<RenderBoxModelObject>*);
+
+    virtual void setSelectionState(SelectionState s);
+protected:
+    void calculateBackgroundImageGeometry(const FillLayer*, int tx, int ty, int w, int h, IntRect& destRect, IntPoint& phase, IntSize& tileSize);
+
+    bool shouldPaintAtLowQuality(GraphicsContext*, Image*, const void*, const IntSize&);
+
+    RenderBoxModelObject* continuation() const;
+    void setContinuation(RenderBoxModelObject*);
+
+private:
+    virtual bool isBoxModelObject() const { return true; }
+
+    IntSize calculateFillTileSize(const FillLayer*, IntSize scaledSize) const;
+
+    void clipBorderSidePolygon(GraphicsContext*, const IntRect&, const IntSize& topLeft, const IntSize& topRight, const IntSize& bottomLeft,
+                               const IntSize& bottomRight, const BoxSide side, bool firstEdgeMatches, bool secondEdgeMatches, const RenderStyle* style,
+                               bool includeLogicalLeftEdge, bool includeLogicalRightEdge);
+
+    friend class RenderView;
+
+    RenderLayer* m_layer;
+    
+    // Used to store state between styleWillChange and styleDidChange
+    static bool s_wasFloating;
+    static bool s_hadLayer;
+    static bool s_layerWasSelfPainting;
+};
+
+inline RenderBoxModelObject* toRenderBoxModelObject(RenderObject* object)
+{ 
+    ASSERT(!object || object->isBoxModelObject());
+    return static_cast<RenderBoxModelObject*>(object);
+}
+
+inline const RenderBoxModelObject* toRenderBoxModelObject(const RenderObject* object)
+{ 
+    ASSERT(!object || object->isBoxModelObject());
+    return static_cast<const RenderBoxModelObject*>(object);
+}
+
+// This will catch anyone doing an unnecessary cast.
+void toRenderBoxModelObject(const RenderBoxModelObject*);
+
+} // namespace WebCore
+
+#endif // RenderBoxModelObject_h