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134 lines
4.5 KiB
C++
134 lines
4.5 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: NPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the NPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the NPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef nsImageMap_h___
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#define nsImageMap_h___
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#include "nsISupports.h"
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#include "nsCoord.h"
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#include "nsVoidArray.h"
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#include "nsIDocumentObserver.h"
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#include "nsIDOMFocusListener.h"
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#include "nsIFrame.h"
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#include "nsIImageMap.h"
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#include "nsIHTMLContent.h"
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class nsIDOMHTMLAreaElement;
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class nsIDOMHTMLMapElement;
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class nsIPresContext;
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class nsIRenderingContext;
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class nsIURI;
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class nsString;
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class nsIDOMEvent;
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class nsImageMap : public nsIDocumentObserver, public nsIDOMFocusListener,
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public nsIImageMap
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{
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public:
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nsImageMap();
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nsresult Init(nsIPresShell* aPresShell, nsIFrame* aImageFrame, nsIDOMHTMLMapElement* aMap);
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/**
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* See if the given aX,aY <b>pixel</b> coordinates are in the image
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* map. If they are then NS_OK is returned and aAbsURL, aTarget, and
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* aAltText are filled in with the values from the underlying area
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* element. If the coordinates are not in the map then NS_NOT_INSIDE
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* is returned.
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*/
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PRBool IsInside(nscoord aX, nscoord aY,
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nsIContent** aContent,
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nsAString& aAbsURL,
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nsAString& aTarget,
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nsAString& aAltText) const;
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/**
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* See if the given aX,aY <b>pixel</b> coordinates are in the image
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* map. If they are then NS_OK is returned otherwise NS_NOT_INSIDE
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* is returned.
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*/
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PRBool IsInside(nscoord aX, nscoord aY) const;
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void Draw(nsIPresContext* aCX, nsIRenderingContext& aRC);
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/**
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* Called just before the nsImageFrame releases us.
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* Used to break the cycle caused by the DOM listener.
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*/
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void Destroy(void);
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// nsISupports
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NS_DECL_ISUPPORTS
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// nsIDocumentObserver
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NS_DECL_NSIDOCUMENTOBSERVER
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//nsIDOMFocusListener
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NS_IMETHOD Focus(nsIDOMEvent* aEvent);
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NS_IMETHOD Blur(nsIDOMEvent* aEvent);
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NS_IMETHOD HandleEvent(nsIDOMEvent* aEvent);
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//nsIImageMap
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NS_IMETHOD GetBoundsForAreaContent(nsIContent *aContent,
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nsIPresContext* aPresContext,
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nsRect& aBounds);
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protected:
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virtual ~nsImageMap();
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void FreeAreas();
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nsresult UpdateAreas();
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nsresult UpdateAreasForBlock(nsIContent* aParent, PRBool* aFoundAnchor);
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static PRBool IsAncestorOf(nsIContent* aContent,
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nsIContent* aAncestorContent);
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nsresult AddArea(nsIContent* aArea);
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nsresult ChangeFocus(nsIDOMEvent* aEvent, PRBool aFocus);
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nsresult Invalidate(nsIPresContext* aPresContext, nsIFrame* aFrame, nsRect& aRect);
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nsIPresShell* mPresShell; // WEAK - owns the frame that owns us
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nsIFrame* mImageFrame; // the frame that owns us
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nsIDocument* mDocument; // WEAK - the imagemap will not outlive the document
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nsCOMPtr<nsIHTMLContent> mMap;
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nsAutoVoidArray mAreas; // almost always has some entries
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PRBool mContainsBlockContents;
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};
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#endif /* nsImageMap_h___ */
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