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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /layout/generic/nsImageMap.h
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
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diff --git a/layout/generic/nsImageMap.h b/layout/generic/nsImageMap.h
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+/* -*- 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/. */
+
+/* code for HTML client-side image maps */
+
+#ifndef nsImageMap_h
+#define nsImageMap_h
+
+#include "mozilla/gfx/2D.h"
+#include "nsCOMPtr.h"
+#include "nsCoord.h"
+#include "nsTArray.h"
+#include "nsStubMutationObserver.h"
+#include "nsIDOMEventListener.h"
+
+class Area;
+class nsImageFrame;
+class nsIFrame;
+class nsIContent;
+struct nsRect;
+
+class nsImageMap final : public nsStubMutationObserver,
+ public nsIDOMEventListener
+{
+ typedef mozilla::gfx::DrawTarget DrawTarget;
+ typedef mozilla::gfx::ColorPattern ColorPattern;
+ typedef mozilla::gfx::StrokeOptions StrokeOptions;
+
+public:
+ nsImageMap();
+
+ nsresult Init(nsImageFrame* aImageFrame, nsIContent* aMap);
+
+ /**
+ * Return the first area element (in content order) for the given aX,aY pixel
+ * coordinate or nullptr if the coordinate is outside all areas.
+ */
+ nsIContent* GetArea(nscoord aX, nscoord aY) const;
+
+ /**
+ * Return area elements count associated with the image map.
+ */
+ uint32_t AreaCount() const { return mAreas.Length(); }
+
+ /**
+ * Return area element at the given index.
+ */
+ nsIContent* GetAreaAt(uint32_t aIndex) const;
+
+ void Draw(nsIFrame* aFrame, DrawTarget& aDrawTarget,
+ const ColorPattern& aColor,
+ const StrokeOptions& aStrokeOptions = StrokeOptions());
+
+ /**
+ * Called just before the nsImageFrame releases us.
+ * Used to break the cycle caused by the DOM listener.
+ */
+ void Destroy();
+
+ // nsISupports
+ NS_DECL_ISUPPORTS
+
+ // nsIMutationObserver
+ NS_DECL_NSIMUTATIONOBSERVER_ATTRIBUTECHANGED
+ NS_DECL_NSIMUTATIONOBSERVER_CONTENTAPPENDED
+ NS_DECL_NSIMUTATIONOBSERVER_CONTENTINSERTED
+ NS_DECL_NSIMUTATIONOBSERVER_CONTENTREMOVED
+ NS_DECL_NSIMUTATIONOBSERVER_PARENTCHAINCHANGED
+
+ //nsIDOMEventListener
+ NS_DECL_NSIDOMEVENTLISTENER
+
+ nsresult GetBoundsForAreaContent(nsIContent *aContent,
+ nsRect& aBounds);
+
+protected:
+ virtual ~nsImageMap();
+
+ void FreeAreas();
+
+ nsresult UpdateAreas();
+ nsresult SearchForAreas(nsIContent* aParent, bool& aFoundArea,
+ bool& aFoundAnchor);
+
+ nsresult AddArea(nsIContent* aArea);
+
+ void MaybeUpdateAreas(nsIContent *aContent);
+
+ nsImageFrame* mImageFrame; // the frame that owns us
+ nsCOMPtr<nsIContent> mMap;
+ AutoTArray<Area*, 8> mAreas; // almost always has some entries
+ bool mContainsBlockContents;
+};
+
+#endif /* nsImageMap_h */