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gecko-dev/layout/generic/nsImageMap.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public
* License Version 1.1 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
*/
#include "nsImageMap.h"
#include "nsString.h"
#include "nsVoidArray.h"
#include "nsCoord.h"
#include "nsIRenderingContext.h"
#include "nsIPresContext.h"
#include "nsIURL.h"
#include "nsIURL.h"
#include "nsIServiceManager.h"
#include "nsNetUtil.h"
#include "nsXIFConverter.h"
#include "nsISizeOfHandler.h"
#include "nsTextFragment.h"
#include "nsIContent.h"
#include "nsIDOMHTMLElement.h"
#include "nsIDOMHTMLMapElement.h"
#include "nsIDOMHTMLAreaElement.h"
#include "nsIDOMHTMLAnchorElement.h"
#include "nsIDOMHTMLCollection.h"
#include "nsIDocument.h"
#include "nsINameSpaceManager.h"
#include "nsHTMLAtoms.h"
#include "nsIHTMLContent.h"
#include "nsHTMLIIDs.h"
class Area {
public:
Area(const nsString& aBaseURL, const nsString& aHREF,
const nsString& aTarget, const nsString& aAltText,
PRBool aSuppress, PRBool aHasURL);
virtual ~Area();
void ParseCoords(const nsString& aSpec);
virtual PRBool IsInside(nscoord x, nscoord y) = 0;
virtual void Draw(nsIPresContext* aCX,
nsIRenderingContext& aRC) = 0;
virtual void GetShapeName(nsString& aResult) const = 0;
void ToHTML(nsString& aResult);
/**
* Translate the content object into the (XIF) XML Interchange Format
* XIF is an intermediate form of the content model, the buffer
* will then be parsed into any number of formats including HTML, TXT, etc.
*/
virtual void BeginConvertToXIF(nsXIFConverter& aConverter) const;
virtual void ConvertContentToXIF(nsXIFConverter& aConverter) const;
virtual void FinishConvertToXIF(nsXIFConverter& aConverter) const;
const nsString& GetBase() const { return mBase; }
const nsString& GetHREF() const { return mHREF; }
const nsString& GetTarget() const { return mTarget; }
const nsString& GetAltText() const { return mAltText; }
PRBool GetSuppress() const { return mSuppressFeedback; }
#ifdef DEBUG
virtual void SizeOf(nsISizeOfHandler* aHandler, PRUint32* aResult) const;
#endif
nsString mBase;
nsString mHREF;
nsString mTarget;
nsString mAltText;
nscoord* mCoords;
PRInt32 mNumCoords;
PRBool mSuppressFeedback;
PRBool mHasURL;
};
MOZ_DECL_CTOR_COUNTER(Area);
Area::Area(const nsString& aBaseURL, const nsString& aHREF,
const nsString& aTarget, const nsString& aAltText,
PRBool aSuppress, PRBool aHasURL)
: mBase(aBaseURL), mHREF(aHREF), mTarget(aTarget), mAltText(aAltText),
mSuppressFeedback(aSuppress), mHasURL(aHasURL)
{
MOZ_COUNT_CTOR(Area);
mCoords = nsnull;
mNumCoords = 0;
}
Area::~Area()
{
MOZ_COUNT_DTOR(Area);
delete [] mCoords;
}
#ifdef DEBUG
void
Area::SizeOf(nsISizeOfHandler* aHandler, PRUint32* aResult) const
{
if (aResult) {
PRUint32 sum = sizeof(*this);
PRUint32 s;
mBase.SizeOf(aHandler, &s); sum += s;
mHREF.SizeOf(aHandler, &s); sum += s;
mTarget.SizeOf(aHandler, &s); sum += s;
mAltText.SizeOf(aHandler, &s); sum += s;
sum += mNumCoords * sizeof(nscoord);
*aResult = sum;
}
}
#endif
#include <stdlib.h>
#define XP_ATOI(_s) ::atoi(_s)
// XXX straight copy from laymap.c
static nscoord* lo_parse_coord_list(char *str, PRInt32* value_cnt)
{
char *tptr;
char *n_str;
PRInt32 i, cnt;
PRInt32 *value_list;
/*
* Nothing in an empty list
*/
*value_cnt = 0;
if ((str == NULL)||(*str == '\0'))
{
return((PRInt32 *)NULL);
}
/*
* Skip beginning whitespace, all whitespace is empty list.
*/
n_str = str;
while (XP_IS_SPACE(*n_str))
{
n_str++;
}
if (*n_str == '\0')
{
return((PRInt32 *)NULL);
}
/*
* Make a pass where any two numbers separated by just whitespace
* are given a comma separator. Count entries while passing.
*/
cnt = 0;
while (*n_str != '\0')
{
PRBool has_comma;
/*
* Skip to a separator
*/
tptr = n_str;
while ((!XP_IS_SPACE(*tptr))&&(*tptr != ',')&&(*tptr != '\0'))
{
tptr++;
}
n_str = tptr;
/*
* If no more entries, break out here
*/
if (*n_str == '\0')
{
break;
}
/*
* Skip to the end of the separator, noting if we have a
* comma.
*/
has_comma = PR_FALSE;
while ((XP_IS_SPACE(*tptr))||(*tptr == ','))
{
if (*tptr == ',')
{
if (has_comma == PR_FALSE)
{
has_comma = PR_TRUE;
}
else
{
break;
}
}
tptr++;
}
/*
* If this was trailing whitespace we skipped, we are done.
*/
if ((*tptr == '\0')&&(has_comma == PR_FALSE))
{
break;
}
/*
* Else if the separator is all whitespace, and this is not the
* end of the string, add a comma to the separator.
*/
else if (has_comma == PR_FALSE)
{
*n_str = ',';
}
/*
* count the entry skipped.
*/
cnt++;
n_str = tptr;
}
/*
* count the last entry in the list.
*/
cnt++;
*value_cnt = cnt;
/*
* Allocate space for the coordinate array.
*/
value_list = new nscoord[cnt];
if (value_list == NULL)
{
return((PRInt32 *)NULL);
}
/*
* Second pass to copy integer values into list.
*/
tptr = str;
for (i=0; i<cnt; i++)
{
char *ptr;
ptr = strchr(tptr, ',');
if (ptr != NULL)
{
*ptr = '\0';
}
/*
* Strip whitespace in front of number because I don't
* trust atoi to do it on all platforms.
*/
while (XP_IS_SPACE(*tptr))
{
tptr++;
}
if (*tptr == '\0')
{
value_list[i] = 0;
}
else
{
value_list[i] = (nscoord)XP_ATOI(tptr);
}
if (ptr != NULL)
{
*ptr = ',';
tptr = (char *)(ptr + 1);
}
}
return(value_list);
}
void Area::ParseCoords(const nsString& aSpec)
{
char* cp = aSpec.ToNewCString();
if (cp) {
mCoords = lo_parse_coord_list(cp, &mNumCoords);
nsCRT::free(cp);
}
}
void Area::ToHTML(nsString& aResult)
{
aResult.Truncate();
aResult.Append("<AREA SHAPE=");
nsAutoString shape;
GetShapeName(shape);
aResult.Append(shape);
aResult.Append(" COORDS=\"");
if (nsnull != mCoords) {
PRInt32 i, n = mNumCoords;
for (i = 0; i < n; i++) {
aResult.Append(mCoords[i], 10);
if (i < n - 1) {
aResult.Append(',');
}
}
}
aResult.Append("\" HREF=\"");
aResult.Append(mHREF);
aResult.Append("\"");
if (0 < mTarget.Length()) {
aResult.Append(" TARGET=\"");
aResult.Append(mTarget);
aResult.Append("\"");
}
if (0 < mAltText.Length()) {
aResult.Append(" ALT=\"");
aResult.Append(mAltText);
aResult.Append("\"");
}
if (mSuppressFeedback) {
aResult.Append(" SUPPRESS");
}
aResult.Append('>');
}
/**
* Translate the content object into the (XIF) XML Interchange Format
* XIF is an intermediate form of the content model, the buffer
* will then be parsed into any number of formats including HTML, TXT, etc.
*/
void Area::BeginConvertToXIF(nsXIFConverter& aConverter) const
{
nsAutoString tag("area");
aConverter.BeginStartTag(tag);
nsAutoString name("shape");
nsAutoString shape;
GetShapeName(shape);
aConverter.AddAttribute(name,shape);
nsAutoString coords;
if (nsnull != mCoords) {
PRInt32 i, n = mNumCoords;
for (i = 0; i < n; i++) {
coords.Append(mCoords[i], 10);
if (i < n - 1) {
coords.Append(',');
}
}
}
name.SetString("coords");
aConverter.AddAttribute(name,coords);
name.SetString("href");
aConverter.AddAttribute(name,mHREF);
if (0 < mTarget.Length()) {
name.SetString("target");
aConverter.AddAttribute(name,mTarget);
}
if (0 < mAltText.Length()) {
name.SetString("alt");
aConverter.AddAttribute(name,mTarget);
}
if (mSuppressFeedback) {
name.SetString("suppress");
aConverter.AddAttribute(name);
}
}
void Area::FinishConvertToXIF(nsXIFConverter& aConverter) const
{
nsAutoString tag("area");
aConverter.FinishStartTag(tag,PR_TRUE);
}
void Area::ConvertContentToXIF(nsXIFConverter& aConverter) const
{
// Nothing needs to be done here, all of the logic
// is handled in the start and finish methods
}
//----------------------------------------------------------------------
class DefaultArea : public Area {
public:
DefaultArea(const nsString& aBaseURL, const nsString& aHREF,
const nsString& aTarget, const nsString& aAltText,
PRBool aSuppress, PRBool aHasURL);
~DefaultArea();
virtual PRBool IsInside(nscoord x, nscoord y);
virtual void Draw(nsIPresContext* aCX,
nsIRenderingContext& aRC);
virtual void GetShapeName(nsString& aResult) const;
};
DefaultArea::DefaultArea(const nsString& aBaseURL, const nsString& aHREF,
const nsString& aTarget, const nsString& aAltText,
PRBool aSuppress, PRBool aHasURL)
: Area(aBaseURL, aHREF, aTarget, aAltText, aSuppress, aHasURL)
{
}
DefaultArea::~DefaultArea()
{
}
PRBool DefaultArea::IsInside(nscoord x, nscoord y)
{
return PR_TRUE;
}
void DefaultArea::Draw(nsIPresContext* aCX, nsIRenderingContext& aRC)
{
}
void DefaultArea::GetShapeName(nsString& aResult) const
{
aResult.Append("default");
}
//----------------------------------------------------------------------
class RectArea : public Area {
public:
RectArea(const nsString& aBaseURL, const nsString& aHREF,
const nsString& aTarget, const nsString& aAltText,
PRBool aSuppress, PRBool aHasURL);
~RectArea();
virtual PRBool IsInside(nscoord x, nscoord y);
virtual void Draw(nsIPresContext* aCX,
nsIRenderingContext& aRC);
virtual void GetShapeName(nsString& aResult) const;
};
RectArea::RectArea(const nsString& aBaseURL, const nsString& aHREF,
const nsString& aTarget, const nsString& aAltText,
PRBool aSuppress, PRBool aHasURL)
: Area(aBaseURL, aHREF, aTarget, aAltText, aSuppress, aHasURL)
{
}
RectArea::~RectArea()
{
}
PRBool RectArea::IsInside(nscoord x, nscoord y)
{
if (mNumCoords >= 4) { // Note: > is for nav compatabilty
nscoord x1 = mCoords[0];
nscoord y1 = mCoords[1];
nscoord x2 = mCoords[2];
nscoord y2 = mCoords[3];
if ((x1 > x2)|| (y1 > y2)) {
// Can't be inside a screwed up rect
return PR_FALSE;
}
if ((x >= x1) && (x <= x2) && (y >= y1) && (y <= y2)) {
return PR_TRUE;
}
}
return PR_FALSE;
}
void RectArea::Draw(nsIPresContext* aCX, nsIRenderingContext& aRC)
{
if (mNumCoords >= 4) {
float p2t;
aCX->GetPixelsToTwips(&p2t);
nscoord x1 = NSIntPixelsToTwips(mCoords[0], p2t);
nscoord y1 = NSIntPixelsToTwips(mCoords[1], p2t);
nscoord x2 = NSIntPixelsToTwips(mCoords[2], p2t);
nscoord y2 = NSIntPixelsToTwips(mCoords[3], p2t);
if ((x1 > x2)|| (y1 > y2)) {
return;
}
aRC.DrawRect(x1, y1, x2 - x1, y2 - y1);
}
}
void RectArea::GetShapeName(nsString& aResult) const
{
aResult.Append("rect");
}
//----------------------------------------------------------------------
class PolyArea : public Area {
public:
PolyArea(const nsString& aBaseURL, const nsString& aHREF,
const nsString& aTarget, const nsString& aAltText,
PRBool aSuppress, PRBool aHasURL);
~PolyArea();
virtual PRBool IsInside(nscoord x, nscoord y);
virtual void Draw(nsIPresContext* aCX,
nsIRenderingContext& aRC);
virtual void GetShapeName(nsString& aResult) const;
};
PolyArea::PolyArea(const nsString& aBaseURL, const nsString& aHREF,
const nsString& aTarget, const nsString& aAltText,
PRBool aSuppress, PRBool aHasURL)
: Area(aBaseURL, aHREF, aTarget, aAltText, aSuppress, aHasURL)
{
}
PolyArea::~PolyArea()
{
}
PRBool PolyArea::IsInside(nscoord x, nscoord y)
{
if (mNumCoords >= 6) {
PRInt32 intersects = 0;
nscoord wherex = x;
nscoord wherey = y;
PRInt32 totalv = mNumCoords / 2;
PRInt32 totalc = totalv * 2;
nscoord xval = mCoords[totalc - 2];
nscoord yval = mCoords[totalc - 1];
PRInt32 end = totalc;
PRInt32 pointer = 1;
if ((yval >= wherey) != (mCoords[pointer] >= wherey))
if ((xval >= wherex) == (mCoords[0] >= wherex))
intersects += (xval >= wherex) ? 1 : 0;
else
intersects += ((xval - (yval - wherey) *
(mCoords[0] - xval) /
(mCoords[pointer] - yval)) >= wherex) ? 1 : 0;
// XXX I wonder what this is doing; this is a translation of ptinpoly.c
while (pointer < end) {
yval = mCoords[pointer];
pointer += 2;
if (yval >= wherey) {
while((pointer < end) && (mCoords[pointer] >= wherey))
pointer+=2;
if (pointer >= end)
break;
if ((mCoords[pointer-3] >= wherex) ==
(mCoords[pointer-1] >= wherex)) {
intersects += (mCoords[pointer-3] >= wherex) ? 1 : 0;
} else {
intersects +=
((mCoords[pointer-3] - (mCoords[pointer-2] - wherey) *
(mCoords[pointer-1] - mCoords[pointer-3]) /
(mCoords[pointer] - mCoords[pointer - 2])) >= wherex) ? 1:0;
}
} else {
while((pointer < end) && (mCoords[pointer] < wherey))
pointer+=2;
if (pointer >= end)
break;
if ((mCoords[pointer-3] >= wherex) ==
(mCoords[pointer-1] >= wherex)) {
intersects += (mCoords[pointer-3] >= wherex) ? 1:0;
} else {
intersects +=
((mCoords[pointer-3] - (mCoords[pointer-2] - wherey) *
(mCoords[pointer-1] - mCoords[pointer-3]) /
(mCoords[pointer] - mCoords[pointer - 2])) >= wherex) ? 1:0;
}
}
}
if ((intersects & 1) != 0) {
return PR_TRUE;
}
}
return PR_FALSE;
}
void PolyArea::Draw(nsIPresContext* aCX, nsIRenderingContext& aRC)
{
if (mNumCoords >= 6) {
float p2t;
aCX->GetPixelsToTwips(&p2t);
nscoord x0 = NSIntPixelsToTwips(mCoords[0], p2t);
nscoord y0 = NSIntPixelsToTwips(mCoords[1], p2t);
nscoord x1, y1;
for (PRInt32 i = 2; i < mNumCoords; i += 2) {
x1 = NSIntPixelsToTwips(mCoords[i], p2t);
y1 = NSIntPixelsToTwips(mCoords[i+1], p2t);
aRC.DrawLine(x0, y0, x1, y1);
x0 = x1;
y0 = y1;
}
x1 = NSIntPixelsToTwips(mCoords[0], p2t);
y1 = NSIntPixelsToTwips(mCoords[1], p2t);
aRC.DrawLine(x0, y0, x1, y1);
}
}
void PolyArea::GetShapeName(nsString& aResult) const
{
aResult.Append("polygon");
}
//----------------------------------------------------------------------
class CircleArea : public Area {
public:
CircleArea(const nsString& aBaseURL, const nsString& aHREF,
const nsString& aTarget, const nsString& aAltText,
PRBool aSuppress, PRBool aHasURL);
~CircleArea();
virtual PRBool IsInside(nscoord x, nscoord y);
virtual void Draw(nsIPresContext* aCX,
nsIRenderingContext& aRC);
virtual void GetShapeName(nsString& aResult) const;
};
CircleArea::CircleArea(const nsString& aBaseURL, const nsString& aHREF,
const nsString& aTarget, const nsString& aAltText,
PRBool aSuppress, PRBool aHasURL)
: Area(aBaseURL, aHREF, aTarget, aAltText, aSuppress, aHasURL)
{
}
CircleArea::~CircleArea()
{
}
PRBool CircleArea::IsInside(nscoord x, nscoord y)
{
// Note: > is for nav compatabilty
if (mNumCoords >= 3) {
nscoord x1 = mCoords[0];
nscoord y1 = mCoords[1];
nscoord radius = mCoords[2];
if (radius < 0) {
return PR_FALSE;
}
nscoord dx = x1 - x;
nscoord dy = y1 - y;
nscoord dist = (dx * dx) + (dy * dy);
if (dist <= (radius * radius)) {
return PR_TRUE;
}
}
return PR_FALSE;
}
void CircleArea::Draw(nsIPresContext* aCX, nsIRenderingContext& aRC)
{
if (mNumCoords >= 3) {
float p2t;
aCX->GetPixelsToTwips(&p2t);
nscoord x1 = NSIntPixelsToTwips(mCoords[0], p2t);
nscoord y1 = NSIntPixelsToTwips(mCoords[1], p2t);
nscoord radius = NSIntPixelsToTwips(mCoords[2], p2t);
if (radius < 0) {
return;
}
nscoord x = x1 - radius;
nscoord y = y1 - radius;
nscoord w = 2 * radius;
aRC.DrawEllipse(x, y, w, w);
}
}
void CircleArea::GetShapeName(nsString& aResult) const
{
aResult.Append("circle");
}
//----------------------------------------------------------------------
static NS_DEFINE_IID(kIContentIID, NS_ICONTENT_IID);
static NS_DEFINE_IID(kIDOMHTMLElementIID, NS_IDOMHTMLELEMENT_IID);
static NS_DEFINE_IID(kIDOMHTMLAreaElementIID, NS_IDOMHTMLAREAELEMENT_IID);
static NS_DEFINE_IID(kIDOMHTMLAnchorElementIID, NS_IDOMHTMLANCHORELEMENT_IID);
static NS_DEFINE_IID(kIDocumentObserverIID, NS_IDOCUMENT_OBSERVER_IID);
nsImageMap::nsImageMap()
{
NS_INIT_REFCNT();
mMap = nsnull;
mDomMap = nsnull;
mDocument = nsnull;
mContainsBlockContents = PR_FALSE;
}
nsImageMap::~nsImageMap()
{
FreeAreas();
if (nsnull != mDocument) {
mDocument->RemoveObserver(NS_STATIC_CAST(nsIDocumentObserver*, this));
NS_RELEASE(mDocument);
}
NS_IF_RELEASE(mDomMap);
NS_IF_RELEASE(mMap);
}
NS_IMPL_ISUPPORTS(nsImageMap, kIDocumentObserverIID);
void
nsImageMap::FreeAreas()
{
PRInt32 i, n = mAreas.Count();
for (i = 0; i < n; i++) {
Area* area = (Area*) mAreas.ElementAt(i);
delete area;
}
mAreas.Clear();
}
nsresult
nsImageMap::Init(nsIDOMHTMLMapElement* aMap)
{
NS_PRECONDITION(nsnull != aMap, "null ptr");
if (nsnull == aMap) {
return NS_ERROR_NULL_POINTER;
}
mDomMap = aMap;
NS_ADDREF(aMap);
nsresult rv = aMap->QueryInterface(kIContentIID, (void**) &mMap);
if (NS_SUCCEEDED(rv)) {
rv = mMap->GetDocument(mDocument);
if (NS_SUCCEEDED(rv) && (nsnull != mDocument)) {
mDocument->AddObserver(NS_STATIC_CAST(nsIDocumentObserver*, this));
}
}
// "Compile" the areas in the map into faster access versions
rv = UpdateAreas();
return rv;
}
nsresult
nsImageMap::UpdateAreasForBlock(nsIContent* aParent)
{
nsresult rv = NS_OK;
nsIContent* child;
PRInt32 i, n;
aParent->ChildCount(n);
for (i = 0; (i < n) && NS_SUCCEEDED(rv); i++) {
rv = aParent->ChildAt(i, child);
if (NS_SUCCEEDED(rv)) {
nsIDOMHTMLAnchorElement* area;
rv = child->QueryInterface(kIDOMHTMLAnchorElementIID, (void**) &area);
if (NS_SUCCEEDED(rv)) {
rv = AddArea(child);
NS_RELEASE(area);
}
else {
rv = UpdateAreasForBlock(child);
}
NS_RELEASE(child);
}
}
return rv;
}
nsresult
nsImageMap::UpdateAreas()
{
// Get rid of old area data
FreeAreas();
nsresult rv = NS_OK;
nsIContent* child;
PRInt32 i, n;
PRBool containsBlock = PR_FALSE, containsArea = PR_FALSE;
mMap->ChildCount(n);
for (i = 0; (i < n) && NS_SUCCEEDED(rv); i++) {
rv = mMap->ChildAt(i, child);
if (NS_SUCCEEDED(rv)) {
// Only look at elements and not text, comments, etc.
nsIDOMHTMLElement* element;
rv = child->QueryInterface(kIDOMHTMLElementIID, (void**)&element);
if (NS_FAILED(rv)) {
rv = NS_OK;
continue;
}
NS_RELEASE(element);
// First check if this map element contains an AREA element.
// If so, we only look for AREA elements
if (!containsBlock) {
nsIDOMHTMLAreaElement* area;
rv = child->QueryInterface(kIDOMHTMLAreaElementIID, (void**) &area);
if (NS_SUCCEEDED(rv)) {
containsArea = PR_TRUE;
rv = AddArea(child);
NS_RELEASE(area);
}
else {
containsBlock = PR_TRUE;
mContainsBlockContents = PR_TRUE;
rv = NS_OK;
}
}
// If the map element doesn't contain an AREA element as its
// first element, we make the assumption that it contains
// block elements and we look for children that are anchors.
if (!containsArea) {
rv = UpdateAreasForBlock(child);
}
NS_RELEASE(child);
}
}
return rv;
}
nsresult
nsImageMap::AddArea(nsIContent* aArea)
{
nsAutoString shape, coords, baseURL, href, target, altText, noHref;
aArea->GetAttribute(kNameSpaceID_HTML, nsHTMLAtoms::shape, shape);
aArea->GetAttribute(kNameSpaceID_HTML, nsHTMLAtoms::coords, coords);
aArea->GetAttribute(kNameSpaceID_HTML, nsHTMLAtoms::href, href);
aArea->GetAttribute(kNameSpaceID_HTML, nsHTMLAtoms::target, target);
aArea->GetAttribute(kNameSpaceID_HTML, nsHTMLAtoms::alt, altText);
PRBool hasURL = (PRBool)(NS_CONTENT_ATTR_HAS_VALUE != aArea->GetAttribute(kNameSpaceID_HTML, nsHTMLAtoms::nohref, noHref));
PRBool suppress = PR_FALSE;/* XXX */
Area* area;
if ((0 == shape.Length()) ||
shape.EqualsIgnoreCase("rect") ||
shape.EqualsIgnoreCase("rectangle")) {
area = new RectArea(baseURL, href, target, altText, suppress, hasURL);
}
else if (shape.EqualsIgnoreCase("poly") ||
shape.EqualsIgnoreCase("polygon")) {
area = new PolyArea(baseURL, href, target, altText, suppress, hasURL);
}
else if (shape.EqualsIgnoreCase("circle") ||
shape.EqualsIgnoreCase("circ")) {
area = new CircleArea(baseURL, href, target, altText, suppress, hasURL);
}
else {
area = new DefaultArea(baseURL, href, target, altText, suppress, hasURL);
}
area->ParseCoords(coords);
mAreas.AppendElement(area);
return NS_OK;
}
PRBool
nsImageMap::IsInside(nscoord aX, nscoord aY,
nsIURI* aDocURL,
nsString& aAbsURL,
nsString& aTarget,
nsString& aAltText,
PRBool* aSuppress)
{
PRInt32 i, n = mAreas.Count();
for (i = 0; i < n; i++) {
Area* area = (Area*) mAreas.ElementAt(i);
if (area->IsInside(aX, aY) && area->mHasURL) {
nsresult rv;
// Set the image loader's source URL and base URL
nsIURI* baseUri = nsnull;
nsIHTMLContent* htmlContent;
if (mMap) {
rv = mMap->QueryInterface(kIHTMLContentIID, (void**)&htmlContent);
if (NS_SUCCEEDED(rv)) {
htmlContent->GetBaseURL(baseUri);
NS_RELEASE(htmlContent);
}
else {
nsIDocument* doc;
rv = mMap->GetDocument(doc);
if (NS_SUCCEEDED(rv)) {
doc->GetBaseURL(baseUri); // Could just use mDocument here...
NS_RELEASE(doc);
}
}
}
if (NS_FAILED(rv)) return PR_FALSE;
NS_MakeAbsoluteURI(area->mHREF, baseUri, aAbsURL);
NS_RELEASE(baseUri);
aTarget = area->mTarget;
if (mMap && (aTarget.Length() == 0)) {
nsIHTMLContent* content = nsnull;
nsresult result = mMap->QueryInterface(kIHTMLContentIID, (void**)&content);
if ((NS_OK == result) && content) {
content->GetBaseTarget(aTarget);
NS_RELEASE(content);
}
}
aAltText = area->mAltText;
*aSuppress = area->mSuppressFeedback;
return PR_TRUE;
}
}
return PR_FALSE;
}
PRBool
nsImageMap::IsInside(nscoord aX, nscoord aY)
{
PRInt32 i, n = mAreas.Count();
for (i = 0; i < n; i++) {
Area* area = (Area*) mAreas.ElementAt(i);
if (area->IsInside(aX, aY)) {
if ((area->mHREF).Length() > 0) {
return PR_TRUE;
}
}
}
return PR_FALSE;
}
void
nsImageMap::Draw(nsIPresContext* aCX, nsIRenderingContext& aRC)
{
PRInt32 i, n = mAreas.Count();
for (i = 0; i < n; i++) {
Area* area = (Area*) mAreas.ElementAt(i);
area->Draw(aCX, aRC);
}
}
NS_IMETHODIMP
nsImageMap::BeginUpdate(nsIDocument *aDocument)
{
return NS_OK;
}
NS_IMETHODIMP
nsImageMap::EndUpdate(nsIDocument *aDocument)
{
return NS_OK;
}
NS_IMETHODIMP
nsImageMap::BeginLoad(nsIDocument *aDocument)
{
return NS_OK;
}
NS_IMETHODIMP
nsImageMap::EndLoad(nsIDocument *aDocument)
{
return NS_OK;
}
NS_IMETHODIMP
nsImageMap::BeginReflow(nsIDocument *aDocument, nsIPresShell* aShell)
{
return NS_OK;
}
NS_IMETHODIMP
nsImageMap::EndReflow(nsIDocument *aDocument, nsIPresShell* aShell)
{
return NS_OK;
}
PRBool
nsImageMap::IsAncestorOf(nsIContent* aContent,
nsIContent* aAncestorContent)
{
nsIContent* parent;
nsresult rv = aContent->GetParent(parent);
if (NS_SUCCEEDED(rv) && (nsnull != parent)) {
PRBool rBool;
if (parent == aAncestorContent) {
rBool = PR_TRUE;
}
else {
rBool = IsAncestorOf(parent, aAncestorContent);
}
NS_RELEASE(parent);
return rBool;
}
return PR_FALSE;
}
NS_IMETHODIMP
nsImageMap::ContentChanged(nsIDocument *aDocument,
nsIContent* aContent,
nsISupports* aSubContent)
{
// If the parent of the changing content node is our map then update
// the map.
nsIContent* parent;
nsresult rv = aContent->GetParent(parent);
if (NS_SUCCEEDED(rv) && (nsnull != parent)) {
if ((parent == mMap) ||
(mContainsBlockContents && IsAncestorOf(parent, mMap))) {
UpdateAreas();
}
NS_RELEASE(parent);
}
return NS_OK;
}
NS_IMETHODIMP
nsImageMap::ContentStatesChanged(nsIDocument* aDocument,
nsIContent* aContent1,
nsIContent* aContent2)
{
return NS_OK;
}
NS_IMETHODIMP
nsImageMap::AttributeChanged(nsIDocument *aDocument,
nsIContent* aContent,
PRInt32 aNameSpaceID,
nsIAtom* aAttribute,
PRInt32 aHint)
{
// If the parent of the changing content node is our map then update
// the map.
nsIContent* parent;
nsresult rv = aContent->GetParent(parent);
if (NS_SUCCEEDED(rv) && (nsnull != parent)) {
if ((parent == mMap) ||
(mContainsBlockContents && IsAncestorOf(parent, mMap))) {
UpdateAreas();
}
NS_RELEASE(parent);
}
return NS_OK;
}
NS_IMETHODIMP
nsImageMap::ContentAppended(nsIDocument *aDocument,
nsIContent* aContainer,
PRInt32 aNewIndexInContainer)
{
if ((mMap == aContainer) ||
(mContainsBlockContents && IsAncestorOf(aContainer, mMap))) {
UpdateAreas();
}
return NS_OK;
}
NS_IMETHODIMP
nsImageMap::ContentInserted(nsIDocument *aDocument,
nsIContent* aContainer,
nsIContent* aChild,
PRInt32 aIndexInContainer)
{
if ((mMap == aContainer) ||
(mContainsBlockContents && IsAncestorOf(aContainer, mMap))) {
UpdateAreas();
}
return NS_OK;
}
NS_IMETHODIMP
nsImageMap::ContentReplaced(nsIDocument *aDocument,
nsIContent* aContainer,
nsIContent* aOldChild,
nsIContent* aNewChild,
PRInt32 aIndexInContainer)
{
if ((mMap == aContainer) ||
(mContainsBlockContents && IsAncestorOf(aContainer, mMap))) {
UpdateAreas();
}
return NS_OK;
}
NS_IMETHODIMP
nsImageMap::ContentRemoved(nsIDocument *aDocument,
nsIContent* aContainer,
nsIContent* aChild,
PRInt32 aIndexInContainer)
{
if ((mMap == aContainer) ||
(mContainsBlockContents && IsAncestorOf(aContainer, mMap))) {
UpdateAreas();
}
return NS_OK;
}
NS_IMETHODIMP
nsImageMap::StyleSheetAdded(nsIDocument *aDocument,
nsIStyleSheet* aStyleSheet)
{
return NS_OK;
}
NS_IMETHODIMP
nsImageMap::StyleSheetRemoved(nsIDocument *aDocument,
nsIStyleSheet* aStyleSheet)
{
return NS_OK;
}
NS_IMETHODIMP
nsImageMap::StyleSheetDisabledStateChanged(nsIDocument *aDocument,
nsIStyleSheet* aStyleSheet,
PRBool aDisabled)
{
return NS_OK;
}
NS_IMETHODIMP
nsImageMap::StyleRuleChanged(nsIDocument *aDocument,
nsIStyleSheet* aStyleSheet,
nsIStyleRule* aStyleRule,
PRInt32 aHint)
{
return NS_OK;
}
NS_IMETHODIMP
nsImageMap::StyleRuleAdded(nsIDocument *aDocument,
nsIStyleSheet* aStyleSheet,
nsIStyleRule* aStyleRule)
{
return NS_OK;
}
NS_IMETHODIMP
nsImageMap::StyleRuleRemoved(nsIDocument *aDocument,
nsIStyleSheet* aStyleSheet,
nsIStyleRule* aStyleRule)
{
return NS_OK;
}
NS_IMETHODIMP
nsImageMap::DocumentWillBeDestroyed(nsIDocument *aDocument)
{
return NS_OK;
}
#ifdef DEBUG
void
nsImageMap::SizeOf(nsISizeOfHandler* aHandler, PRUint32* aResult) const
{
if (aResult) {
PRUint32 sum = sizeof(*this);
PRInt32 i, n = mAreas.Count();
for (i = 0; i < n; i++) {
Area* area = (Area*) mAreas.ElementAt(i);
PRUint32 areaSize;
area->SizeOf(aHandler, &areaSize);
sum += areaSize;
}
*aResult = sum;
}
}
#endif
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