AI 145796: Land the WebKit merge @r42026.

Automated import of CL 145796

1 files changed, 133 insertions, 0 deletions

diff --git a/WebCore/rendering/RenderBoxModelObject.h b/WebCore/rendering/RenderBoxModelObject.h
new file mode 100644
index 0000000..161e5d2
--- /dev/null
+++ b/WebCore/rendering/RenderBoxModelObject.h
@@ -0,0 +1,133 @@
+/*
+ * 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.
+ *
+ * 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 {
+
+// Values for vertical alignment.
+const int PositionTop = -0x7fffffff;
+const int PositionBottom = 0x7fffffff;
+const int PositionUndefined = 0x80000000;
+
+// 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()); }
+
+    // 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(); }
+
+    // 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 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 marginTop() const = 0;
+    virtual int marginBottom() const = 0;
+    virtual int marginLeft() const = 0;
+    virtual int marginRight() const = 0;
+
+    bool hasHorizontalBordersPaddingOrMargin() const { return hasHorizontalBordersOrPadding() || marginLeft() != 0 || marginRight() != 0; }
+    bool hasHorizontalBordersOrPadding() const { return borderLeft() != 0 || borderRight() != 0 || paddingLeft() != 0 || paddingRight() != 0; }
+
+    virtual int containingBlockWidthForContent() const;
+
+    virtual void childBecameNonInline(RenderObject* /*child*/) { }
+
+    void paintBorder(GraphicsContext*, int tx, int ty, int w, int h, const RenderStyle*, bool begin = true, bool end = 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*, bool begin = true, bool end = true);
+    virtual void paintFillLayerExtended(const PaintInfo&, const Color&, const FillLayer*, int clipY, int clipHeight,
+                                        int tx, int ty, int width, int height, InlineFlowBox* = 0, CompositeOperator = CompositeSourceOver);
+
+    // The difference between this inline's baseline position and the line's baseline position.
+    int verticalPosition(bool firstLine) const;
+
+    // Called by RenderObject::destroy() (and RenderWidget::destroy()) and is the only way layers should ever be destroyed
+    void destroyLayer();
+
+protected:
+    void calculateBackgroundImageGeometry(const FillLayer*, int tx, int ty, int w, int h, IntRect& destRect, IntPoint& phase, IntSize& tileSize);
+    IntSize calculateBackgroundSize(const FillLayer*, int scaledWidth, int scaledHeight) const;
+
+private:
+    virtual bool isBoxModelObject() const { return true; }
+    friend class RenderView;
+
+    RenderLayer* m_layer;
+    
+    // Used to store state between styleWillChange and styleDidChange
+    static bool s_wasFloating;
+};
+
+inline RenderBoxModelObject* toRenderBoxModelObject(RenderObject* o)
+{ 
+    ASSERT(!o || o->isBoxModelObject());
+    return static_cast<RenderBoxModelObject*>(o);
+}
+
+inline const RenderBoxModelObject* toRenderBoxModelObject(const RenderObject* o)
+{ 
+    ASSERT(!o || o->isBoxModelObject());
+    return static_cast<const RenderBoxModelObject*>(o);
+}
+
+// This will catch anyone doing an unnecessary cast.
+void toRenderBoxModelObject(const RenderBoxModelObject*);
+
+} // namespace WebCore
+
+#endif // RenderBoxModelObject_h