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204 lines
6.3 KiB
C++
204 lines
6.3 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: MPL 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 Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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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 the Mozilla SVG project.
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*
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* The Initial Developer of the Original Code is IBM Corporation.
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* Portions created by the Initial Developer are Copyright (C) 2004
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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 MPL, 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 MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsSVGGFrame.h"
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#include "nsIAnonymousContentCreator.h"
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#include "nsIDOMSVGUseElement.h"
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#include "nsIDOMSVGTransformable.h"
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#include "nsSVGElement.h"
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#include "nsSVGUseElement.h"
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#include "gfxMatrix.h"
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typedef nsSVGGFrame nsSVGUseFrameBase;
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class nsSVGUseFrame : public nsSVGUseFrameBase,
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public nsIAnonymousContentCreator
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{
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friend nsIFrame*
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NS_NewSVGUseFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
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protected:
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nsSVGUseFrame(nsStyleContext* aContext) : nsSVGUseFrameBase(aContext) {}
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public:
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NS_DECL_QUERYFRAME
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NS_DECL_FRAMEARENA_HELPERS
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// nsIFrame interface:
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#ifdef DEBUG
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NS_IMETHOD Init(nsIContent* aContent,
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nsIFrame* aParent,
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nsIFrame* aPrevInFlow);
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#endif
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NS_IMETHOD AttributeChanged(PRInt32 aNameSpaceID,
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nsIAtom* aAttribute,
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PRInt32 aModType);
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virtual void DestroyFrom(nsIFrame* aDestructRoot);
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/**
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* Get the "type" of the frame
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*
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* @see nsGkAtoms::svgUseFrame
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*/
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virtual nsIAtom* GetType() const;
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virtual bool IsLeaf() const;
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#ifdef DEBUG
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NS_IMETHOD GetFrameName(nsAString& aResult) const
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{
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return MakeFrameName(NS_LITERAL_STRING("SVGUse"), aResult);
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}
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#endif
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// nsIAnonymousContentCreator
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virtual nsresult CreateAnonymousContent(nsTArray<ContentInfo>& aElements);
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virtual void AppendAnonymousContentTo(nsBaseContentList& aElements,
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PRUint32 aFilter);
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};
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//----------------------------------------------------------------------
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// Implementation
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nsIFrame*
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NS_NewSVGUseFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
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{
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return new (aPresShell) nsSVGUseFrame(aContext);
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}
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NS_IMPL_FRAMEARENA_HELPERS(nsSVGUseFrame)
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nsIAtom *
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nsSVGUseFrame::GetType() const
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{
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return nsGkAtoms::svgUseFrame;
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}
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//----------------------------------------------------------------------
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// nsQueryFrame methods
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NS_QUERYFRAME_HEAD(nsSVGUseFrame)
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NS_QUERYFRAME_ENTRY(nsIAnonymousContentCreator)
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NS_QUERYFRAME_TAIL_INHERITING(nsSVGUseFrameBase)
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//----------------------------------------------------------------------
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// nsIFrame methods:
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#ifdef DEBUG
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NS_IMETHODIMP
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nsSVGUseFrame::Init(nsIContent* aContent,
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nsIFrame* aParent,
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nsIFrame* aPrevInFlow)
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{
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nsCOMPtr<nsIDOMSVGUseElement> use = do_QueryInterface(aContent);
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NS_ASSERTION(use, "Content is not an SVG use!");
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return nsSVGUseFrameBase::Init(aContent, aParent, aPrevInFlow);
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}
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#endif /* DEBUG */
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NS_IMETHODIMP
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nsSVGUseFrame::AttributeChanged(PRInt32 aNameSpaceID,
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nsIAtom* aAttribute,
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PRInt32 aModType)
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{
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if (aNameSpaceID == kNameSpaceID_None) {
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if (aAttribute == nsGkAtoms::x ||
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aAttribute == nsGkAtoms::y) {
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// make sure our cached transform matrix gets (lazily) updated
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mCanvasTM = nsnull;
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nsSVGUtils::NotifyChildrenOfSVGChange(this, TRANSFORM_CHANGED);
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} else if (aAttribute == nsGkAtoms::width ||
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aAttribute == nsGkAtoms::height) {
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static_cast<nsSVGUseElement*>(mContent)->SyncWidthHeight(aAttribute);
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}
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} else if (aNameSpaceID == kNameSpaceID_XLink &&
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aAttribute == nsGkAtoms::href) {
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// we're changing our nature, clear out the clone information
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nsSVGUseElement *use = static_cast<nsSVGUseElement*>(mContent);
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use->mOriginal = nsnull;
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use->UnlinkSource();
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use->TriggerReclone();
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}
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return nsSVGUseFrameBase::AttributeChanged(aNameSpaceID,
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aAttribute, aModType);
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}
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void
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nsSVGUseFrame::DestroyFrom(nsIFrame* aDestructRoot)
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{
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nsRefPtr<nsSVGUseElement> use = static_cast<nsSVGUseElement*>(mContent);
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nsSVGUseFrameBase::DestroyFrom(aDestructRoot);
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use->DestroyAnonymousContent();
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}
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bool
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nsSVGUseFrame::IsLeaf() const
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{
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return PR_TRUE;
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}
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//----------------------------------------------------------------------
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// nsIAnonymousContentCreator methods:
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nsresult
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nsSVGUseFrame::CreateAnonymousContent(nsTArray<ContentInfo>& aElements)
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{
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nsSVGUseElement *use = static_cast<nsSVGUseElement*>(mContent);
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nsIContent* clone = use->CreateAnonymousContent();
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if (!clone)
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return NS_ERROR_FAILURE;
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if (!aElements.AppendElement(clone))
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return NS_ERROR_OUT_OF_MEMORY;
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return NS_OK;
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}
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void
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nsSVGUseFrame::AppendAnonymousContentTo(nsBaseContentList& aElements,
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PRUint32 aFilter)
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{
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nsSVGUseElement *use = static_cast<nsSVGUseElement*>(mContent);
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nsIContent* clone = use->GetAnonymousContent();
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aElements.MaybeAppendElement(clone);
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}
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