/* | |
* 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*, ShadowStyle, bool begin = true, bool end = true); | |
void paintFillLayerExtended(const PaintInfo&, const Color&, const FillLayer*, int tx, int ty, int width, int height, InlineFlowBox* = 0, CompositeOperator = CompositeSourceOver, RenderObject* backgroundObject = 0); | |
// 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(); | |
void highQualityRepaintTimerFired(Timer<RenderBoxModelObject>*); | |
protected: | |
void calculateBackgroundImageGeometry(const FillLayer*, int tx, int ty, int w, int h, IntRect& destRect, IntPoint& phase, IntSize& tileSize); | |
private: | |
virtual bool isBoxModelObject() const { return true; } | |
IntSize calculateFillTileSize(const FillLayer*, IntSize scaledSize) const; | |
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 |