The Tor Browser / file comparison
comparison: layout/generic/nsImageMap.h
layout/generic/nsImageMap.h
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| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 /* code for HTML client-side image maps */ | |
| 7 | |
| 8 #ifndef nsImageMap_h | |
| 9 #define nsImageMap_h | |
| 10 | |
| 11 #include "nsCOMPtr.h" | |
| 12 #include "nsCoord.h" | |
| 13 #include "nsTArray.h" | |
| 14 #include "nsStubMutationObserver.h" | |
| 15 #include "nsIDOMEventListener.h" | |
| 16 | |
| 17 class Area; | |
| 18 class nsRenderingContext; | |
| 19 class nsImageFrame; | |
| 20 class nsIFrame; | |
| 21 class nsIContent; | |
| 22 struct nsRect; | |
| 23 | |
| 24 class nsImageMap : public nsStubMutationObserver, | |
| 25 public nsIDOMEventListener | |
| 26 { | |
| 27 public: | |
| 28 nsImageMap(); | |
| 29 | |
| 30 nsresult Init(nsImageFrame* aImageFrame, nsIContent* aMap); | |
| 31 | |
| 32 /** | |
| 33 * Return the first area element (in content order) for the given aX,aY pixel | |
| 34 * coordinate or nullptr if the coordinate is outside all areas. | |
| 35 */ | |
| 36 nsIContent* GetArea(nscoord aX, nscoord aY) const; | |
| 37 | |
| 38 /** | |
| 39 * Return area elements count associated with the image map. | |
| 40 */ | |
| 41 uint32_t AreaCount() const { return mAreas.Length(); } | |
| 42 | |
| 43 /** | |
| 44 * Return area element at the given index. | |
| 45 */ | |
| 46 nsIContent* GetAreaAt(uint32_t aIndex) const; | |
| 47 | |
| 48 void Draw(nsIFrame* aFrame, nsRenderingContext& aRC); | |
| 49 | |
| 50 /** | |
| 51 * Called just before the nsImageFrame releases us. | |
| 52 * Used to break the cycle caused by the DOM listener. | |
| 53 */ | |
| 54 void Destroy(); | |
| 55 | |
| 56 // nsISupports | |
| 57 NS_DECL_ISUPPORTS | |
| 58 | |
| 59 // nsIMutationObserver | |
| 60 NS_DECL_NSIMUTATIONOBSERVER_ATTRIBUTECHANGED | |
| 61 NS_DECL_NSIMUTATIONOBSERVER_CONTENTAPPENDED | |
| 62 NS_DECL_NSIMUTATIONOBSERVER_CONTENTINSERTED | |
| 63 NS_DECL_NSIMUTATIONOBSERVER_CONTENTREMOVED | |
| 64 NS_DECL_NSIMUTATIONOBSERVER_PARENTCHAINCHANGED | |
| 65 | |
| 66 //nsIDOMEventListener | |
| 67 NS_DECL_NSIDOMEVENTLISTENER | |
| 68 | |
| 69 nsresult GetBoundsForAreaContent(nsIContent *aContent, | |
| 70 nsRect& aBounds); | |
| 71 | |
| 72 protected: | |
| 73 virtual ~nsImageMap(); | |
| 74 | |
| 75 void FreeAreas(); | |
| 76 | |
| 77 nsresult UpdateAreas(); | |
| 78 nsresult SearchForAreas(nsIContent* aParent, bool& aFoundArea, | |
| 79 bool& aFoundAnchor); | |
| 80 | |
| 81 nsresult AddArea(nsIContent* aArea); | |
| 82 | |
| 83 void MaybeUpdateAreas(nsIContent *aContent); | |
| 84 | |
| 85 nsImageFrame* mImageFrame; // the frame that owns us | |
| 86 nsCOMPtr<nsIContent> mMap; | |
| 87 nsAutoTArray<Area*, 8> mAreas; // almost always has some entries | |
| 88 bool mContainsBlockContents; | |
| 89 }; | |
| 90 | |
| 91 #endif /* nsImageMap_h */ |
