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38 /* code for HTML client-side image maps */
40 #ifndef nsImageMap_h___
41 #define nsImageMap_h___
43 #include "nsISupports.h"
45 #include "nsVoidArray.h"
46 #include "nsStubMutationObserver.h"
47 #include "nsIDOMFocusListener.h"
49 #include "nsIImageMap.h"
51 class nsIDOMHTMLAreaElement
;
52 class nsIDOMHTMLMapElement
;
54 class nsIRenderingContext
;
59 class nsImageMap
: public nsStubMutationObserver
, public nsIDOMFocusListener
,
65 nsresult
Init(nsIPresShell
* aPresShell
, nsIFrame
* aImageFrame
, nsIDOMHTMLMapElement
* aMap
);
68 * See if the given aX,aY <b>pixel</b> coordinates are in the image
69 * map. If they are then PR_TRUE is returned and aContent points to the
70 * found area. If the coordinates are not in the map then PR_FALSE
73 PRBool
IsInside(nscoord aX
, nscoord aY
,
74 nsIContent
** aContent
) const;
76 void Draw(nsIFrame
* aFrame
, nsIRenderingContext
& aRC
);
79 * Called just before the nsImageFrame releases us.
80 * Used to break the cycle caused by the DOM listener.
87 // nsIMutationObserver
88 NS_DECL_NSIMUTATIONOBSERVER_ATTRIBUTECHANGED
89 NS_DECL_NSIMUTATIONOBSERVER_CONTENTAPPENDED
90 NS_DECL_NSIMUTATIONOBSERVER_CONTENTINSERTED
91 NS_DECL_NSIMUTATIONOBSERVER_CONTENTREMOVED
94 NS_IMETHOD
Focus(nsIDOMEvent
* aEvent
);
95 NS_IMETHOD
Blur(nsIDOMEvent
* aEvent
);
96 NS_IMETHOD
HandleEvent(nsIDOMEvent
* aEvent
);
99 NS_IMETHOD
GetBoundsForAreaContent(nsIContent
*aContent
,
100 nsPresContext
* aPresContext
,
104 virtual ~nsImageMap();
108 nsresult
UpdateAreas();
109 nsresult
SearchForAreas(nsIContent
* aParent
, PRBool
& aFoundArea
,
110 PRBool
& aFoundAnchor
);
112 nsresult
AddArea(nsIContent
* aArea
);
114 nsresult
ChangeFocus(nsIDOMEvent
* aEvent
, PRBool aFocus
);
116 void MaybeUpdateAreas(nsIContent
*aContent
);
118 nsIPresShell
* mPresShell
; // WEAK - owns the frame that owns us
119 nsIFrame
* mImageFrame
; // the frame that owns us
120 nsCOMPtr
<nsIContent
> mMap
;
121 nsAutoVoidArray mAreas
; // almost always has some entries
122 PRBool mContainsBlockContents
;
125 #endif /* nsImageMap_h___ */