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03683daeeb
The old code operates in the CSS pixel coordinate, so we should use the type system to express that. With this patch, nsImageControlFrame, nsImageFrame, and nsImageMap now have no usage of nsIntPoint. Differential Revision: https://phabricator.services.mozilla.com/D136647
113 lines
3.0 KiB
C++
113 lines
3.0 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/* code for HTML client-side image maps */
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#ifndef nsImageMap_h
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#define nsImageMap_h
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#include "mozilla/gfx/2D.h"
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#include "nsCOMPtr.h"
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#include "nsCoord.h"
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#include "nsTArray.h"
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#include "nsStubMutationObserver.h"
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#include "nsIDOMEventListener.h"
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#include "Units.h"
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class Area;
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class nsImageFrame;
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class nsIFrame;
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class nsIContent;
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struct nsRect;
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namespace mozilla {
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namespace dom {
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class HTMLAreaElement;
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}
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} // namespace mozilla
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class nsImageMap final : public nsStubMutationObserver,
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public nsIDOMEventListener {
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typedef mozilla::gfx::DrawTarget DrawTarget;
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typedef mozilla::gfx::ColorPattern ColorPattern;
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typedef mozilla::gfx::StrokeOptions StrokeOptions;
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public:
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nsImageMap();
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void Init(nsImageFrame* aImageFrame, nsIContent* aMap);
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/**
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* Return the first area element (in content order) for the given point in
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* CSS pixel coordinate or nullptr if the coordinate is outside all areas.
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*/
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mozilla::dom::HTMLAreaElement* GetArea(const mozilla::CSSIntPoint& aPt) const;
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/**
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* Return area elements count associated with the image map.
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*/
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uint32_t AreaCount() const { return mAreas.Length(); }
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/**
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* Return area element at the given index.
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*/
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mozilla::dom::HTMLAreaElement* GetAreaAt(uint32_t aIndex) const;
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void Draw(nsIFrame* aFrame, DrawTarget& aDrawTarget,
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const ColorPattern& aColor,
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const StrokeOptions& aStrokeOptions = StrokeOptions());
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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();
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// nsISupports
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NS_DECL_ISUPPORTS
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// nsIMutationObserver
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NS_DECL_NSIMUTATIONOBSERVER_ATTRIBUTECHANGED
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NS_DECL_NSIMUTATIONOBSERVER_CONTENTAPPENDED
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NS_DECL_NSIMUTATIONOBSERVER_CONTENTINSERTED
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NS_DECL_NSIMUTATIONOBSERVER_CONTENTREMOVED
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NS_DECL_NSIMUTATIONOBSERVER_PARENTCHAINCHANGED
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// nsIDOMEventListener
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NS_DECL_NSIDOMEVENTLISTENER
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nsresult GetBoundsForAreaContent(nsIContent* aContent, nsRect& aBounds);
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using AreaList = AutoTArray<mozilla::UniquePtr<Area>, 8>;
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protected:
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virtual ~nsImageMap();
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void FreeAreas();
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void UpdateAreas();
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void SearchForAreas(nsIContent* aParent);
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void AddArea(mozilla::dom::HTMLAreaElement* aArea);
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void AreaRemoved(mozilla::dom::HTMLAreaElement* aArea);
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void MaybeUpdateAreas(nsIContent* aContent);
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nsImageFrame* mImageFrame; // the frame that owns us
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nsCOMPtr<nsIContent> mMap;
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// almost always has some entries
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AreaList mAreas;
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// This is set when we search for all area children and tells us whether we
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// should consider the whole subtree or just direct children when we get
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// content notifications about changes inside the map subtree.
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bool mConsiderWholeSubtree;
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};
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#endif /* nsImageMap_h */
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