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Diffstat (limited to 'WebCore/rendering/RenderBoxModelObject.h')
-rw-r--r-- | WebCore/rendering/RenderBoxModelObject.h | 133 |
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 |