gecko-dev/layout/svg/nsSVGTextContainerFrame.h

124 строки
3.6 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef NS_SVGTEXTCONTAINERFRAME_H
#define NS_SVGTEXTCONTAINERFRAME_H
#include "mozilla/Attributes.h"
#include "nsFrame.h"
#include "nsIFrame.h"
#include "nsISVGChildFrame.h"
#include "nsQueryFrame.h"
#include "nsSVGContainerFrame.h"
#include "nsTArray.h"
class nsFrameList;
class nsIDOMSVGRect;
class nsISVGGlyphFragmentNode;
class nsStyleContext;
class nsSVGGlyphFrame;
class nsSVGTextFrame;
namespace mozilla {
class nsISVGPoint;
}
class nsSVGTextContainerFrame : public nsSVGDisplayContainerFrame
{
protected:
nsSVGTextContainerFrame(nsStyleContext* aContext) :
nsSVGDisplayContainerFrame(aContext) {}
public:
void NotifyGlyphMetricsChange();
virtual void GetXY(SVGUserUnitList *aX, SVGUserUnitList *aY);
virtual void GetDxDy(SVGUserUnitList *aDx, SVGUserUnitList *aDy);
virtual const SVGNumberList *GetRotate();
NS_DECL_QUERYFRAME_TARGET(nsSVGTextContainerFrame)
NS_DECL_QUERYFRAME
NS_DECL_FRAMEARENA_HELPERS
// nsIFrame
NS_IMETHOD InsertFrames(ChildListID aListID,
nsIFrame* aPrevFrame,
nsFrameList& aFrameList) MOZ_OVERRIDE;
NS_IMETHOD RemoveFrame(ChildListID aListID, nsIFrame *aOldFrame) MOZ_OVERRIDE;
NS_IMETHOD GetStartPositionOfChar(uint32_t charnum, nsISupports **_retval);
NS_IMETHOD GetEndPositionOfChar(uint32_t charnum, nsISupports **_retval);
NS_IMETHOD GetExtentOfChar(uint32_t charnum, nsIDOMSVGRect **_retval);
NS_IMETHOD GetRotationOfChar(uint32_t charnum, float *_retval);
/*
* Returns the number of characters in a string
*/
virtual uint32_t GetNumberOfChars();
/*
* Determines the length of a string
*/
virtual float GetComputedTextLength();
/*
* Determines the length of a substring
*/
virtual float GetSubStringLength(uint32_t charnum, uint32_t nchars);
/*
* Get the character at the specified position
*/
virtual int32_t GetCharNumAtPosition(mozilla::nsISVGPoint *point);
void GetEffectiveXY(nsTArray<float> &aX, nsTArray<float> &aY);
void GetEffectiveDxDy(nsTArray<float> &aDx, nsTArray<float> &aDy);
void GetEffectiveRotate(nsTArray<float> &aRotate);
protected:
/*
* Returns the first child node for a frame
*/
nsISVGGlyphFragmentNode *
GetFirstGlyphFragmentChildNode();
/*
* Returns the next child node for a frame
*/
nsISVGGlyphFragmentNode *
GetNextGlyphFragmentChildNode(nsISVGGlyphFragmentNode *node);
void CopyPositionList(nsTArray<float> *parentList,
SVGUserUnitList *selfList,
nsTArray<float> &dstList,
uint32_t aOffset);
void CopyRotateList(nsTArray<float> *parentList,
const SVGNumberList *selfList,
nsTArray<float> &dstList,
uint32_t aOffset);
uint32_t BuildPositionList(uint32_t aOffset, uint32_t aDepth);
void SetWhitespaceCompression();
private:
/*
* Returns the glyph frame containing a particular character
*/
static nsSVGGlyphFrame *
GetGlyphFrameAtCharNum(nsISVGGlyphFragmentNode* node,
uint32_t charnum,
uint32_t *offset);
/*
* Returns the text frame ancestor of this frame (or the frame itself
* if this is a text frame)
*/
nsSVGTextFrame * GetTextFrame();
nsTArray<float> mX;
nsTArray<float> mY;
nsTArray<float> mDx;
nsTArray<float> mDy;
nsTArray<float> mRotate;
};
#endif