зеркало из https://github.com/mozilla/pjs.git
1797 строки
52 KiB
C++
1797 строки
52 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*/
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#include "nsHTMLParts.h"
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#include "nsCOMPtr.h"
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#include "nsImageFrame.h"
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#include "nsString.h"
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#include "nsIPresContext.h"
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#include "nsIRenderingContext.h"
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#include "nsIPresShell.h"
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#include "nsHTMLIIDs.h"
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#include "nsIImage.h"
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#include "nsIWidget.h"
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#include "nsHTMLAtoms.h"
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#include "nsIHTMLContent.h"
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#include "nsIDocument.h"
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#include "nsIStyleContext.h"
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#include "nsStyleConsts.h"
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#include "nsImageMap.h"
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#include "nsILinkHandler.h"
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#include "nsIURL.h"
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#include "nsIIOService.h"
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#include "nsIURL.h"
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#include "nsILoadGroup.h"
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#include "nsIServiceManager.h"
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#include "nsNetUtil.h"
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static NS_DEFINE_CID(kIOServiceCID, NS_IOSERVICE_CID);
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#include "nsIView.h"
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#include "nsIViewManager.h"
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#include "nsHTMLContainerFrame.h"
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#include "prprf.h"
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#include "nsIFontMetrics.h"
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#include "nsCSSRendering.h"
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#include "nsIDOMHTMLAnchorElement.h"
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#include "nsIDOMHTMLImageElement.h"
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#include "nsIDeviceContext.h"
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#include "nsINameSpaceManager.h"
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#include "nsTextFragment.h"
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#include "nsIDOMHTMLMapElement.h"
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#include "nsIStyleSet.h"
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#include "nsLayoutAtoms.h"
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#include "nsISizeOfHandler.h"
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#include "nsImageMapUtils.h"
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#include "nsIFrameManager.h"
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#include "nsIScriptSecurityManager.h"
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#include "nsIAccessibilityService.h"
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#include "nsIServiceManager.h"
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#include "nsIDOMNode.h"
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#include "nsGUIEvent.h"
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#include "imgIContainer.h"
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#include "imgILoader.h"
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#include "nsIEventQueueService.h"
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#include "plevent.h"
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#include "nsContentPolicyUtils.h"
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#include "nsIScriptGlobalObject.h"
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#include "nsIDOMWindow.h"
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#include "nsIDOMDocument.h"
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#ifdef DEBUG
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#undef NOISY_IMAGE_LOADING
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#else
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#undef NOISY_IMAGE_LOADING
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#endif
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// Value's for mSuppress
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#define SUPPRESS_UNSET 0
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#define DONT_SUPPRESS 1
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#define SUPPRESS 2
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#define DEFAULT_SUPPRESS 3
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// Default alignment value (so we can tell an unset value from a set value)
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#define ALIGN_UNSET PRUint8(-1)
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// use the data in the reflow state to decide if the image has a constrained size
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// (i.e. width and height that are based on the containing block size and not the image size)
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// so we can avoid animated GIF related reflows
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static void HaveFixedSize(const nsHTMLReflowState& aReflowState, PRPackedBool& aConstrainedSize);
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nsresult
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NS_NewImageFrame(nsIPresShell* aPresShell, nsIFrame** aNewFrame)
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{
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NS_PRECONDITION(aNewFrame, "null OUT ptr");
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if (nsnull == aNewFrame) {
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return NS_ERROR_NULL_POINTER;
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}
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nsImageFrame* it = new (aPresShell) nsImageFrame;
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if (nsnull == it) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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*aNewFrame = it;
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return NS_OK;
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}
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nsImageFrame::nsImageFrame() :
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mIntrinsicSize(0, 0),
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mGotInitialReflow(PR_FALSE),
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mFailureReplace(PR_TRUE)
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{
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// Size is constrained if we have a width and height.
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// - Set in reflow in case the attributes are changed
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mSizeConstrained = PR_FALSE;
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}
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nsImageFrame::~nsImageFrame()
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{
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}
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NS_IMETHODIMP
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nsImageFrame::QueryInterface(const nsIID& aIID, void** aInstancePtr)
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{
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NS_ENSURE_ARG_POINTER(aInstancePtr);
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*aInstancePtr = nsnull;
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#ifdef DEBUG
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if (aIID.Equals(NS_GET_IID(nsIFrameDebug))) {
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*aInstancePtr = NS_STATIC_CAST(nsIFrameDebug*,this);
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return NS_OK;
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}
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#endif
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if (aIID.Equals(NS_GET_IID(nsIImageFrame))) {
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*aInstancePtr = NS_STATIC_CAST(nsIImageFrame*,this);
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return NS_OK;
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} else if (aIID.Equals(NS_GET_IID(nsIFrame))) {
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*aInstancePtr = NS_STATIC_CAST(nsIFrame*,this);
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return NS_OK;
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} else if (aIID.Equals(NS_GET_IID(nsISupports))) {
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*aInstancePtr = NS_STATIC_CAST(nsIImageFrame*,this);
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return NS_OK;
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}
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return NS_NOINTERFACE;
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}
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NS_IMETHODIMP nsImageFrame::GetAccessible(nsIAccessible** aAccessible)
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{
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nsCOMPtr<nsIAccessibilityService> accService = do_GetService("@mozilla.org/accessibilityService;1");
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if (accService) {
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nsIAccessible* acc = nsnull;
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return accService->CreateHTMLImageAccessible(NS_STATIC_CAST(nsIFrame*, this), aAccessible);
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}
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return NS_ERROR_FAILURE;
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}
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NS_IMETHODIMP_(nsrefcnt) nsImageFrame::AddRef(void)
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{
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NS_WARNING("not supported for frames");
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return 1;
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}
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NS_IMETHODIMP_(nsrefcnt) nsImageFrame::Release(void)
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{
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NS_WARNING("not supported for frames");
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return 1;
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}
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NS_IMETHODIMP
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nsImageFrame::Destroy(nsIPresContext* aPresContext)
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{
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// Tell our image map, if there is one, to clean up
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// This causes the nsImageMap to unregister itself as
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// a DOM listener.
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if(mImageMap) {
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mImageMap->Destroy();
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NS_RELEASE(mImageMap);
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}
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if (mImageRequest)
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mImageRequest->Cancel(NS_ERROR_FAILURE); // NS_BINDING_ABORT ?
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if (mLowImageRequest)
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mLowImageRequest->Cancel(NS_ERROR_FAILURE); // NS_BINDING_ABORT ?
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// set the frame to null so we don't send messages to a dead object.
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if (mListener)
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NS_REINTERPRET_CAST(nsImageListener*, mListener.get())->SetFrame(nsnull);
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mImageRequest = nsnull;
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mLowImageRequest = nsnull;
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mListener = nsnull;
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return nsLeafFrame::Destroy(aPresContext);
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}
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NS_IMETHODIMP
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nsImageFrame::Init(nsIPresContext* aPresContext,
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nsIContent* aContent,
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nsIFrame* aParent,
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nsIStyleContext* aContext,
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nsIFrame* aPrevInFlow)
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{
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nsresult rv = nsLeafFrame::Init(aPresContext, aContent, aParent,
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aContext, aPrevInFlow);
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// See if we have a SRC attribute
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nsAutoString src;
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nsresult ca;
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ca = mContent->GetAttribute(kNameSpaceID_HTML, nsHTMLAtoms::src, src);
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if ((NS_CONTENT_ATTR_HAS_VALUE != ca) || (src.Length() == 0))
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{
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// Let's see if this is an object tag and we have a DATA attribute
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nsIAtom* tag;
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mContent->GetTag(tag);
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if(tag == nsHTMLAtoms::object)
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mContent->GetAttribute(kNameSpaceID_HTML, nsHTMLAtoms::data, src);
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NS_IF_RELEASE(tag);
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}
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nsAutoString lowSrc;
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nsresult lowSrcResult;
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lowSrcResult = mContent->GetAttribute(kNameSpaceID_HTML, nsHTMLAtoms::lowsrc, lowSrc);
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// Set the image loader's source URL and base URL
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if (NS_CONTENT_ATTR_HAS_VALUE == lowSrcResult && !lowSrc.IsEmpty()) {
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LoadImage(lowSrc, aPresContext, getter_AddRefs(mLowImageRequest));
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}
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mInitialLoadCompleted = PR_FALSE;
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mCanSendLoadEvent = PR_TRUE;
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rv = LoadImage(src, aPresContext, getter_AddRefs(mImageRequest)); // if the image was found in the cache,
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// it is possible that LoadImage will result in
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// a call to OnStartContainer()
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return rv;
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}
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NS_IMETHODIMP nsImageFrame::OnStartDecode(imgIRequest *aRequest, nsIPresContext *aPresContext)
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{
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return NS_OK;
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}
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NS_IMETHODIMP nsImageFrame::OnStartContainer(imgIRequest *aRequest, nsIPresContext *aPresContext, imgIContainer *aImage)
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{
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mInitialLoadCompleted = PR_TRUE;
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if (aImage)
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{
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/* Get requested animation policy from the pres context:
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* normal = 0
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* one frame = 1
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* one loop = 2
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*/
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nsImageAnimation animateMode = eImageAnimation_Normal; //default value
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nsresult rv = aPresContext->GetImageAnimationMode(&animateMode);
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if (NS_SUCCEEDED(rv))
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aImage->SetAnimationMode(animateMode);
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}
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nscoord w, h;
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#ifdef DEBUG_pavlov
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NS_ENSURE_ARG_POINTER(aImage);
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#else
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if (!aImage) return NS_ERROR_INVALID_ARG;
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#endif
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aImage->GetWidth(&w);
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aImage->GetHeight(&h);
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float p2t;
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aPresContext->GetPixelsToTwips(&p2t);
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nsSize newsize(NSIntPixelsToTwips(w, p2t), NSIntPixelsToTwips(h, p2t));
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if (mIntrinsicSize != newsize) {
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mIntrinsicSize = newsize;
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if (mIntrinsicSize.width != 0 && mIntrinsicSize.height != 0)
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mTransform.SetToScale((float(mComputedSize.width) / float(mIntrinsicSize.width)),
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(float(mComputedSize.height) / float(mIntrinsicSize.height)));
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if (!mSizeConstrained) {
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nsCOMPtr<nsIPresShell> presShell;
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aPresContext->GetShell(getter_AddRefs(presShell));
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NS_ASSERTION(mParent, "No parent to pass the reflow request up to.");
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NS_ASSERTION(presShell, "No PresShell.");
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if (mParent && presShell && mGotInitialReflow) { // don't reflow if we havn't gotten the inital reflow yet
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mState |= NS_FRAME_IS_DIRTY;
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mParent->ReflowDirtyChild(presShell, NS_STATIC_CAST(nsIFrame*, this));
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}
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}
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}
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return NS_OK;
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}
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NS_IMETHODIMP nsImageFrame::OnStartFrame(imgIRequest *aRequest, nsIPresContext *aPresContext, gfxIImageFrame *aFrame)
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{
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return NS_OK;
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}
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NS_IMETHODIMP nsImageFrame::OnDataAvailable(imgIRequest *aRequest, nsIPresContext *aPresContext, gfxIImageFrame *aFrame, const nsRect *aRect)
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{
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// XXX do we need to make sure that the reflow from the OnStartContainer has been
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// processed before we start calling invalidate
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if (!aRect)
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return NS_ERROR_NULL_POINTER;
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nsRect r(aRect->x, aRect->y, aRect->width, aRect->height);
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float p2t;
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aPresContext->GetPixelsToTwips(&p2t);
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r.x = NSIntPixelsToTwips(r.x, p2t);
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r.y = NSIntPixelsToTwips(r.y, p2t);
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r.width = NSIntPixelsToTwips(r.width, p2t);
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r.height = NSIntPixelsToTwips(r.height, p2t);
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mTransform.TransformCoord(&r.x, &r.y, &r.width, &r.height);
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r.x += mBorderPadding.left;
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r.y += mBorderPadding.top;
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Invalidate(aPresContext, r, PR_FALSE);
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return NS_OK;
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}
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NS_IMETHODIMP nsImageFrame::OnStopFrame(imgIRequest *aRequest, nsIPresContext *aPresContext, gfxIImageFrame *aFrame)
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{
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return NS_OK;
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}
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NS_IMETHODIMP nsImageFrame::OnStopContainer(imgIRequest *aRequest, nsIPresContext *aPresContext, imgIContainer *aImage)
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{
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return NS_OK;
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}
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static void PR_CALLBACK
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HandleImagePLEvent(nsIContent *aContent, PRUint32 aMessage, PRUint32 aFlags)
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{
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nsCOMPtr<nsIDOMNode> node(do_QueryInterface(aContent));
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if (!node) {
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NS_ERROR("null or non-DOM node passed to HandleImagePLEvent!");
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return;
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}
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nsCOMPtr<nsIDOMDocument> dom_doc;
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node->GetOwnerDocument(getter_AddRefs(dom_doc));
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nsCOMPtr<nsIDocument> doc(do_QueryInterface(dom_doc));
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if (!doc) {
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return;
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}
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nsCOMPtr<nsIPresShell> pres_shell;
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doc->GetShellAt(0, getter_AddRefs(pres_shell));
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if (!pres_shell) {
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return;
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}
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nsCOMPtr<nsIPresContext> pres_context;
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pres_shell->GetPresContext(getter_AddRefs(pres_context));
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if (!pres_context) {
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return;
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}
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nsEventStatus status = nsEventStatus_eIgnore;
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nsEvent event;
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event.eventStructType = NS_EVENT;
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event.message = aMessage;
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aContent->HandleDOMEvent(pres_context, &event, nsnull, aFlags, &status);
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}
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static void PR_CALLBACK
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HandleImageOnloadPLEvent(PLEvent *aEvent)
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{
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nsIContent *content = (nsIContent *)PL_GetEventOwner(aEvent);
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HandleImagePLEvent(content, NS_IMAGE_LOAD,
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NS_EVENT_FLAG_INIT | NS_EVENT_FLAG_CANT_BUBBLE);
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NS_RELEASE(content);
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}
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static void PR_CALLBACK
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HandleImageOnerrorPLEvent(PLEvent *aEvent)
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{
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nsIContent *content = (nsIContent *)PL_GetEventOwner(aEvent);
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HandleImagePLEvent(content, NS_IMAGE_ERROR, NS_EVENT_FLAG_INIT);
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NS_RELEASE(content);
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}
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static void PR_CALLBACK
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DestroyImagePLEvent(PLEvent* aEvent)
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{
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delete aEvent;
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}
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// Fire off a PLEvent that'll asynchronously call the image elements
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// onload handler once handled. This is needed since the image library
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// can't decide if it wants to call it's observer methods
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// synchronously or asynchronously. If an image is loaded from the
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// cache the notifications come back synchronously, but if the image
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// is loaded from the netswork the notifications come back
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// asynchronously.
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void
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nsImageFrame::FireDOMEvent(PRUint32 aMessage)
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{
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static NS_DEFINE_CID(kEventQueueServiceCID, NS_EVENTQUEUESERVICE_CID);
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nsCOMPtr<nsIEventQueueService> event_service =
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do_GetService(kEventQueueServiceCID);
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if (!event_service) {
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NS_WARNING("Failed to get event queue service");
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return;
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}
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nsCOMPtr<nsIEventQueue> event_queue;
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event_service->GetThreadEventQueue(NS_CURRENT_THREAD,
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getter_AddRefs(event_queue));
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if (!event_queue) {
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NS_WARNING("Failed to get event queue from service");
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return;
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}
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PLEvent *event = new PLEvent;
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if (!event) {
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// Out of memory, but none of our callers care, so just warn and
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// don't fire the event
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NS_WARNING("Out of memory?");
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return;
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}
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PLHandleEventProc f;
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switch (aMessage) {
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case NS_IMAGE_LOAD :
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f = (PLHandleEventProc)::HandleImageOnloadPLEvent;
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break;
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case NS_IMAGE_ERROR :
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f = (PLHandleEventProc)::HandleImageOnerrorPLEvent;
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break;
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default:
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NS_WARNING("Huh, I don't know how to fire this type of event?!");
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return;
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}
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PL_InitEvent(event, mContent, f, (PLDestroyEventProc)::DestroyImagePLEvent);
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// The event owns the content pointer now.
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NS_ADDREF(mContent);
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event_queue->PostEvent(event);
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}
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NS_IMETHODIMP nsImageFrame::OnStopDecode(imgIRequest *aRequest, nsIPresContext *aPresContext, nsresult aStatus, const PRUnichar *aStatusArg)
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{
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nsCOMPtr<nsIPresShell> presShell;
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aPresContext->GetShell(getter_AddRefs(presShell));
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// check to see if an image error occurred
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PRBool imageFailedToLoad = PR_FALSE;
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if (NS_FAILED(aStatus)) { // We failed to load the image. Notify the pres shell
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PRBool lowFailed = PR_FALSE;
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PRBool imageFailed = PR_FALSE;
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// One of the two images didn't load, which one?
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if (mLowImageRequest == aRequest || !mLowImageRequest) {
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lowFailed = PR_TRUE;
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}
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if (mImageRequest == aRequest || !mImageRequest) {
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imageFailed = PR_TRUE;
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}
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if (imageFailed && lowFailed)
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imageFailedToLoad = PR_TRUE;
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}
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// if src failed and there is no lowsrc
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// or both failed to load, then notify the PresShell
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if (imageFailedToLoad && presShell) {
|
|
if (mFailureReplace) {
|
|
nsAutoString usemap;
|
|
mContent->GetAttribute(kNameSpaceID_HTML, nsHTMLAtoms::usemap, usemap);
|
|
// We failed to load the image. Notify the pres shell if we aren't an image map
|
|
if (usemap.IsEmpty()) {
|
|
presShell->CantRenderReplacedElement(aPresContext, this);
|
|
}
|
|
}
|
|
mFailureReplace = PR_TRUE;
|
|
}
|
|
|
|
// After these DOM events are fired its possible that this frame may be deleted. As a result
|
|
// the code should not attempt to access any of the frames internal data after this point.
|
|
if (presShell) {
|
|
if (imageFailedToLoad) {
|
|
// Send error event
|
|
FireDOMEvent(NS_IMAGE_ERROR);
|
|
} else if (mCanSendLoadEvent) {
|
|
// Send load event
|
|
mCanSendLoadEvent = PR_FALSE;
|
|
|
|
FireDOMEvent(NS_IMAGE_LOAD);
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP nsImageFrame::FrameChanged(imgIContainer *aContainer, nsIPresContext *aPresContext, gfxIImageFrame *aNewFrame, nsRect *aDirtyRect)
|
|
{
|
|
nsRect r(*aDirtyRect);
|
|
|
|
float p2t;
|
|
aPresContext->GetPixelsToTwips(&p2t);
|
|
r.x = NSIntPixelsToTwips(r.x, p2t);
|
|
r.y = NSIntPixelsToTwips(r.y, p2t);
|
|
r.width = NSIntPixelsToTwips(r.width, p2t);
|
|
r.height = NSIntPixelsToTwips(r.height, p2t);
|
|
|
|
mTransform.TransformCoord(&r.x, &r.y, &r.width, &r.height);
|
|
|
|
Invalidate(aPresContext, r, PR_FALSE);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
#define MINMAX(_value,_min,_max) \
|
|
((_value) < (_min) \
|
|
? (_min) \
|
|
: ((_value) > (_max) \
|
|
? (_max) \
|
|
: (_value)))
|
|
|
|
void
|
|
nsImageFrame::GetDesiredSize(nsIPresContext* aPresContext,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nsHTMLReflowMetrics& aDesiredSize)
|
|
{
|
|
|
|
nscoord widthConstraint = NS_INTRINSICSIZE;
|
|
nscoord heightConstraint = NS_INTRINSICSIZE;
|
|
PRBool fixedContentWidth = PR_FALSE;
|
|
PRBool fixedContentHeight = PR_FALSE;
|
|
|
|
nscoord minWidth, maxWidth, minHeight, maxHeight;
|
|
|
|
// Determine whether the image has fixed content width
|
|
widthConstraint = aReflowState.mComputedWidth;
|
|
minWidth = aReflowState.mComputedMinWidth;
|
|
maxWidth = aReflowState.mComputedMaxWidth;
|
|
if (widthConstraint != NS_INTRINSICSIZE) {
|
|
fixedContentWidth = PR_TRUE;
|
|
}
|
|
|
|
// Determine whether the image has fixed content height
|
|
heightConstraint = aReflowState.mComputedHeight;
|
|
minHeight = aReflowState.mComputedMinHeight;
|
|
maxHeight = aReflowState.mComputedMaxHeight;
|
|
if (heightConstraint != NS_UNCONSTRAINEDSIZE) {
|
|
fixedContentHeight = PR_TRUE;
|
|
}
|
|
|
|
PRBool haveComputedSize = PR_FALSE;
|
|
PRBool needIntrinsicImageSize = PR_FALSE;
|
|
|
|
float t2p, sp2t;
|
|
aPresContext->GetTwipsToPixels(&t2p);
|
|
aPresContext->GetScaledPixelsToTwips(&sp2t);
|
|
|
|
// convert from normal twips to scaled twips (printing...)
|
|
float t2st = t2p*sp2t; // twips to scaled twips
|
|
nscoord intrinsicScaledWidth = NSToCoordRound(float(mIntrinsicSize.width) * t2st);
|
|
nscoord intrinsicScaledHeight = NSToCoordRound(float(mIntrinsicSize.height) * t2st);
|
|
|
|
nscoord newWidth=0, newHeight=0;
|
|
if (fixedContentWidth) {
|
|
newWidth = MINMAX(widthConstraint, minWidth, maxWidth);
|
|
if (fixedContentHeight) {
|
|
newHeight = MINMAX(heightConstraint, minHeight, maxHeight);
|
|
haveComputedSize = PR_TRUE;
|
|
} else {
|
|
// We have a width, and an auto height. Compute height from
|
|
// width once we have the intrinsic image size.
|
|
if (intrinsicScaledWidth != 0) {
|
|
newHeight = (intrinsicScaledHeight * newWidth) / intrinsicScaledWidth;
|
|
haveComputedSize = PR_TRUE;
|
|
} else {
|
|
newHeight = 0;
|
|
needIntrinsicImageSize = PR_TRUE;
|
|
}
|
|
}
|
|
} else if (fixedContentHeight) {
|
|
// We have a height, and an auto width. Compute width from height
|
|
// once we have the intrinsic image size.
|
|
newHeight = MINMAX(heightConstraint, minHeight, maxHeight);
|
|
if (intrinsicScaledHeight != 0) {
|
|
newWidth = (intrinsicScaledWidth * newHeight) / intrinsicScaledHeight;
|
|
haveComputedSize = PR_TRUE;
|
|
} else {
|
|
newWidth = 0;
|
|
needIntrinsicImageSize = PR_TRUE;
|
|
}
|
|
} else {
|
|
// auto size the image
|
|
if (mIntrinsicSize.width == 0 && mIntrinsicSize.height == 0)
|
|
needIntrinsicImageSize = PR_TRUE;
|
|
else
|
|
haveComputedSize = PR_TRUE;
|
|
|
|
newWidth = intrinsicScaledWidth;
|
|
newHeight = intrinsicScaledHeight;
|
|
}
|
|
|
|
mComputedSize.width = newWidth;
|
|
mComputedSize.height = newHeight;
|
|
|
|
if (mComputedSize == mIntrinsicSize) {
|
|
mTransform.SetToIdentity();
|
|
} else {
|
|
if (mIntrinsicSize.width != 0 && mIntrinsicSize.height != 0) {
|
|
mTransform.SetToScale(float(mComputedSize.width) / float(mIntrinsicSize.width),
|
|
float(mComputedSize.height) / float(mIntrinsicSize.height));
|
|
}
|
|
}
|
|
|
|
aDesiredSize.width = mComputedSize.width;
|
|
aDesiredSize.height = mComputedSize.height;
|
|
}
|
|
|
|
void
|
|
nsImageFrame::GetInnerArea(nsIPresContext* aPresContext,
|
|
nsRect& aInnerArea) const
|
|
{
|
|
aInnerArea.x = mBorderPadding.left;
|
|
aInnerArea.y = mBorderPadding.top;
|
|
aInnerArea.width = mRect.width -
|
|
(mBorderPadding.left + mBorderPadding.right);
|
|
aInnerArea.height = mRect.height -
|
|
(mBorderPadding.top + mBorderPadding.bottom);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsImageFrame::Reflow(nsIPresContext* aPresContext,
|
|
nsHTMLReflowMetrics& aMetrics,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nsReflowStatus& aStatus)
|
|
{
|
|
DO_GLOBAL_REFLOW_COUNT("nsImageFrame", aReflowState.reason);
|
|
NS_FRAME_TRACE(NS_FRAME_TRACE_CALLS,
|
|
("enter nsImageFrame::Reflow: availSize=%d,%d",
|
|
aReflowState.availableWidth, aReflowState.availableHeight));
|
|
|
|
NS_PRECONDITION(mState & NS_FRAME_IN_REFLOW, "frame is not in reflow");
|
|
|
|
// see if we have a frozen size (i.e. a fixed width and height)
|
|
HaveFixedSize(aReflowState, mSizeConstrained);
|
|
|
|
if (aReflowState.reason == eReflowReason_Initial)
|
|
mGotInitialReflow = PR_TRUE;
|
|
|
|
GetDesiredSize(aPresContext, aReflowState, aMetrics);
|
|
AddBordersAndPadding(aPresContext, aReflowState, aMetrics, mBorderPadding);
|
|
if (nsnull != aMetrics.maxElementSize) {
|
|
// If we have a percentage based width, then our MES width is 0
|
|
if (eStyleUnit_Percent == aReflowState.mStylePosition->mWidth.GetUnit()) {
|
|
aMetrics.maxElementSize->width = 0;
|
|
} else {
|
|
aMetrics.maxElementSize->width = aMetrics.width;
|
|
}
|
|
aMetrics.maxElementSize->height = aMetrics.height;
|
|
}
|
|
if (aMetrics.mFlags & NS_REFLOW_CALC_MAX_WIDTH) {
|
|
aMetrics.mMaximumWidth = aMetrics.width;
|
|
}
|
|
aStatus = NS_FRAME_COMPLETE;
|
|
|
|
NS_FRAME_TRACE(NS_FRAME_TRACE_CALLS,
|
|
("exit nsImageFrame::Reflow: size=%d,%d",
|
|
aMetrics.width, aMetrics.height));
|
|
return NS_OK;
|
|
}
|
|
|
|
// Computes the width of the specified string. aMaxWidth specifies the maximum
|
|
// width available. Once this limit is reached no more characters are measured.
|
|
// The number of characters that fit within the maximum width are returned in
|
|
// aMaxFit. NOTE: it is assumed that the fontmetrics have already been selected
|
|
// into the rendering context before this is called (for performance). MMP
|
|
void
|
|
nsImageFrame::MeasureString(const PRUnichar* aString,
|
|
PRInt32 aLength,
|
|
nscoord aMaxWidth,
|
|
PRUint32& aMaxFit,
|
|
nsIRenderingContext& aContext)
|
|
{
|
|
nscoord totalWidth = 0;
|
|
nscoord spaceWidth;
|
|
aContext.GetWidth(' ', spaceWidth);
|
|
|
|
aMaxFit = 0;
|
|
while (aLength > 0) {
|
|
// Find the next place we can line break
|
|
PRUint32 len = aLength;
|
|
PRBool trailingSpace = PR_FALSE;
|
|
for (PRInt32 i = 0; i < aLength; i++) {
|
|
if (XP_IS_SPACE(aString[i]) && (i > 0)) {
|
|
len = i; // don't include the space when measuring
|
|
trailingSpace = PR_TRUE;
|
|
break;
|
|
}
|
|
}
|
|
|
|
// Measure this chunk of text, and see if it fits
|
|
nscoord width;
|
|
aContext.GetWidth(aString, len, width);
|
|
PRBool fits = (totalWidth + width) <= aMaxWidth;
|
|
|
|
// If it fits on the line, or it's the first word we've processed then
|
|
// include it
|
|
if (fits || (0 == totalWidth)) {
|
|
// New piece fits
|
|
totalWidth += width;
|
|
|
|
// If there's a trailing space then see if it fits as well
|
|
if (trailingSpace) {
|
|
if ((totalWidth + spaceWidth) <= aMaxWidth) {
|
|
totalWidth += spaceWidth;
|
|
} else {
|
|
// Space won't fit. Leave it at the end but don't include it in
|
|
// the width
|
|
fits = PR_FALSE;
|
|
}
|
|
|
|
len++;
|
|
}
|
|
|
|
aMaxFit += len;
|
|
aString += len;
|
|
aLength -= len;
|
|
}
|
|
|
|
if (!fits) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Formats the alt-text to fit within the specified rectangle. Breaks lines
|
|
// between words if a word would extend past the edge of the rectangle
|
|
void
|
|
nsImageFrame::DisplayAltText(nsIPresContext* aPresContext,
|
|
nsIRenderingContext& aRenderingContext,
|
|
const nsString& aAltText,
|
|
const nsRect& aRect)
|
|
{
|
|
const nsStyleColor* color =
|
|
(const nsStyleColor*)mStyleContext->GetStyleData(eStyleStruct_Color);
|
|
const nsStyleFont* font =
|
|
(const nsStyleFont*)mStyleContext->GetStyleData(eStyleStruct_Font);
|
|
|
|
// Set font and color
|
|
aRenderingContext.SetColor(color->mColor);
|
|
aRenderingContext.SetFont(font->mFont);
|
|
|
|
// Format the text to display within the formatting rect
|
|
nsIFontMetrics* fm;
|
|
aRenderingContext.GetFontMetrics(fm);
|
|
|
|
nscoord maxDescent, height;
|
|
fm->GetMaxDescent(maxDescent);
|
|
fm->GetHeight(height);
|
|
|
|
// XXX It would be nice if there was a way to have the font metrics tell
|
|
// use where to break the text given a maximum width. At a minimum we need
|
|
// to be able to get the break character...
|
|
const PRUnichar* str = aAltText.get();
|
|
PRInt32 strLen = aAltText.Length();
|
|
nscoord y = aRect.y;
|
|
while ((strLen > 0) && ((y + maxDescent) < aRect.YMost())) {
|
|
// Determine how much of the text to display on this line
|
|
PRUint32 maxFit; // number of characters that fit
|
|
MeasureString(str, strLen, aRect.width, maxFit, aRenderingContext);
|
|
|
|
// Display the text
|
|
aRenderingContext.DrawString(str, maxFit, aRect.x, y);
|
|
|
|
// Move to the next line
|
|
str += maxFit;
|
|
strLen -= maxFit;
|
|
y += height;
|
|
}
|
|
|
|
NS_RELEASE(fm);
|
|
}
|
|
|
|
struct nsRecessedBorder : public nsStyleBorder {
|
|
nsRecessedBorder(nscoord aBorderWidth)
|
|
: nsStyleBorder()
|
|
{
|
|
nsStyleCoord styleCoord(aBorderWidth);
|
|
|
|
mBorder.SetLeft(styleCoord);
|
|
mBorder.SetTop(styleCoord);
|
|
mBorder.SetRight(styleCoord);
|
|
mBorder.SetBottom(styleCoord);
|
|
|
|
mBorderStyle[0] = NS_STYLE_BORDER_STYLE_INSET;
|
|
mBorderStyle[1] = NS_STYLE_BORDER_STYLE_INSET;
|
|
mBorderStyle[2] = NS_STYLE_BORDER_STYLE_INSET;
|
|
mBorderStyle[3] = NS_STYLE_BORDER_STYLE_INSET;
|
|
|
|
mBorderColor[0] = 0;
|
|
mBorderColor[1] = 0;
|
|
mBorderColor[2] = 0;
|
|
mBorderColor[3] = 0;
|
|
|
|
mHasCachedBorder = PR_FALSE;
|
|
}
|
|
};
|
|
|
|
void
|
|
nsImageFrame::DisplayAltFeedback(nsIPresContext* aPresContext,
|
|
nsIRenderingContext& aRenderingContext,
|
|
PRInt32 aIconId)
|
|
{
|
|
// Calculate the inner area
|
|
nsRect inner;
|
|
GetInnerArea(aPresContext, inner);
|
|
|
|
// Display a recessed one pixel border
|
|
float p2t;
|
|
nscoord borderEdgeWidth;
|
|
aPresContext->GetScaledPixelsToTwips(&p2t);
|
|
borderEdgeWidth = NSIntPixelsToTwips(1, p2t);
|
|
|
|
// Make sure we have enough room to actually render the border within
|
|
// our frame bounds
|
|
if ((inner.width < 2 * borderEdgeWidth) || (inner.height < 2 * borderEdgeWidth)) {
|
|
return;
|
|
}
|
|
|
|
// Paint the border
|
|
nsRecessedBorder recessedBorder(borderEdgeWidth);
|
|
nsCSSRendering::PaintBorder(aPresContext, aRenderingContext, this, inner,
|
|
inner, recessedBorder, mStyleContext, 0);
|
|
|
|
// Adjust the inner rect to account for the one pixel recessed border,
|
|
// and a six pixel padding on each edge
|
|
inner.Deflate(NSIntPixelsToTwips(7, p2t), NSIntPixelsToTwips(7, p2t));
|
|
if (inner.IsEmpty()) {
|
|
return;
|
|
}
|
|
|
|
// Clip so we don't render outside the inner rect
|
|
PRBool clipState;
|
|
aRenderingContext.PushState();
|
|
aRenderingContext.SetClipRect(inner, nsClipCombine_kIntersect, clipState);
|
|
|
|
// Display the icon
|
|
#ifdef USE_IMG2
|
|
// XXX
|
|
#else
|
|
nsIDeviceContext* dc;
|
|
aRenderingContext.GetDeviceContext(dc);
|
|
nsIImage* icon;
|
|
|
|
if (NS_SUCCEEDED(dc->LoadIconImage(aIconId, icon)) && icon) {
|
|
aRenderingContext.DrawImage(icon, inner.x, inner.y);
|
|
|
|
// Reduce the inner rect by the width of the icon, and leave an
|
|
// additional six pixels padding
|
|
PRInt32 iconWidth = NSIntPixelsToTwips(icon->GetWidth() + 6, p2t);
|
|
inner.x += iconWidth;
|
|
inner.width -= iconWidth;
|
|
|
|
NS_RELEASE(icon);
|
|
}
|
|
|
|
NS_RELEASE(dc);
|
|
#endif
|
|
|
|
// If there's still room, display the alt-text
|
|
if (!inner.IsEmpty()) {
|
|
nsAutoString altText;
|
|
if (NS_CONTENT_ATTR_HAS_VALUE == mContent->GetAttribute(kNameSpaceID_HTML, nsHTMLAtoms::alt, altText)) {
|
|
DisplayAltText(aPresContext, aRenderingContext, altText, inner);
|
|
}
|
|
}
|
|
|
|
aRenderingContext.PopState(clipState);
|
|
}
|
|
|
|
NS_METHOD
|
|
nsImageFrame::Paint(nsIPresContext* aPresContext,
|
|
nsIRenderingContext& aRenderingContext,
|
|
const nsRect& aDirtyRect,
|
|
nsFramePaintLayer aWhichLayer)
|
|
{
|
|
PRBool isVisible;
|
|
if (NS_SUCCEEDED(IsVisibleForPainting(aPresContext, aRenderingContext, PR_TRUE, &isVisible)) &&
|
|
isVisible && mRect.width && mRect.height) {
|
|
// If painting is suppressed, we need to stop image painting. We
|
|
// have to cover <img> here because of input image controls.
|
|
PRBool paintingSuppressed = PR_FALSE;
|
|
nsCOMPtr<nsIPresShell> shell;
|
|
aPresContext->GetShell(getter_AddRefs(shell));
|
|
shell->IsPaintingSuppressed(&paintingSuppressed);
|
|
if (paintingSuppressed)
|
|
return NS_OK;
|
|
|
|
|
|
// First paint background and borders
|
|
nsLeafFrame::Paint(aPresContext, aRenderingContext, aDirtyRect,
|
|
aWhichLayer);
|
|
|
|
nsCOMPtr<imgIContainer> imgCon;
|
|
nsCOMPtr<imgIContainer> lowImgCon;
|
|
|
|
if (mImageRequest) {
|
|
mImageRequest->GetImage(getter_AddRefs(imgCon));
|
|
}
|
|
if (mLowImageRequest) {
|
|
mLowImageRequest->GetImage(getter_AddRefs(lowImgCon));
|
|
}
|
|
|
|
PRUint32 loadStatus = imgIRequest::STATUS_ERROR;
|
|
if (mImageRequest) {
|
|
mImageRequest->GetImageStatus(&loadStatus);
|
|
}
|
|
if (loadStatus & imgIRequest::STATUS_ERROR || !(imgCon || lowImgCon)) {
|
|
// No image yet, or image load failed. Draw the alt-text and an icon
|
|
// indicating the status
|
|
if (NS_FRAME_PAINT_LAYER_BACKGROUND == aWhichLayer &&
|
|
!mInitialLoadCompleted) {
|
|
DisplayAltFeedback(aPresContext, aRenderingContext, 0);
|
|
#ifndef USE_IMG2
|
|
(loadStatus & imgIRequest::STATUS_ERROR)
|
|
? NS_ICON_BROKEN_IMAGE
|
|
: NS_ICON_LOADING_IMAGE);
|
|
#endif
|
|
}
|
|
}
|
|
else {
|
|
mInitialLoadCompleted = PR_TRUE;
|
|
if (NS_FRAME_PAINT_LAYER_FOREGROUND == aWhichLayer) {
|
|
// Now render the image into our content area (the area inside the
|
|
// borders and padding)
|
|
nsRect inner;
|
|
GetInnerArea(aPresContext, inner);
|
|
|
|
if (loadStatus & imgIRequest::STATUS_ERROR) {
|
|
if (imgCon) {
|
|
inner.SizeTo(mComputedSize);
|
|
} else if (lowImgCon) {
|
|
// XXX need to handle low image...
|
|
}
|
|
}
|
|
|
|
if (imgCon) {
|
|
nsPoint p(inner.x, inner.y);
|
|
if (mIntrinsicSize == mComputedSize) {
|
|
inner.IntersectRect(inner, aDirtyRect);
|
|
nsRect r(inner.x, inner.y, inner.width, inner.height);
|
|
r.x -= mBorderPadding.left;
|
|
r.y -= mBorderPadding.top;
|
|
aRenderingContext.DrawImage(imgCon, &r, &p);
|
|
} else {
|
|
nsTransform2D trans;
|
|
trans.SetToScale((float(mIntrinsicSize.width) / float(inner.width)),
|
|
(float(mIntrinsicSize.height) / float(inner.height)));
|
|
|
|
nsRect r(0, 0, inner.width, inner.height);
|
|
|
|
trans.TransformCoord(&r.x, &r.y, &r.width, &r.height);
|
|
|
|
nsRect d(inner.x, inner.y, mComputedSize.width, mComputedSize.height);
|
|
aRenderingContext.DrawScaledImage(imgCon, &r, &d);
|
|
}
|
|
}
|
|
}
|
|
|
|
nsImageMap* map = GetImageMap(aPresContext);
|
|
if (nsnull != map) {
|
|
nsRect inner;
|
|
GetInnerArea(aPresContext, inner);
|
|
PRBool clipState;
|
|
aRenderingContext.SetColor(NS_RGB(0, 0, 0));
|
|
aRenderingContext.SetLineStyle(nsLineStyle_kDotted);
|
|
aRenderingContext.PushState();
|
|
aRenderingContext.Translate(inner.x, inner.y);
|
|
map->Draw(aPresContext, aRenderingContext);
|
|
aRenderingContext.PopState(clipState);
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
if ((NS_FRAME_PAINT_LAYER_DEBUG == aWhichLayer) &&
|
|
GetShowFrameBorders()) {
|
|
nsImageMap* map = GetImageMap(aPresContext);
|
|
if (nsnull != map) {
|
|
nsRect inner;
|
|
GetInnerArea(aPresContext, inner);
|
|
PRBool clipState;
|
|
aRenderingContext.SetColor(NS_RGB(0, 0, 0));
|
|
aRenderingContext.PushState();
|
|
aRenderingContext.Translate(inner.x, inner.y);
|
|
map->Draw(aPresContext, aRenderingContext);
|
|
aRenderingContext.PopState(clipState);
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
|
|
}
|
|
|
|
return nsFrame::Paint(aPresContext, aRenderingContext, aDirtyRect, aWhichLayer);
|
|
}
|
|
|
|
nsImageMap*
|
|
nsImageFrame::GetImageMap(nsIPresContext* aPresContext)
|
|
{
|
|
if (!mImageMap) {
|
|
nsCOMPtr<nsIDocument> doc;
|
|
mContent->GetDocument(*getter_AddRefs(doc));
|
|
if (!doc) {
|
|
return nsnull;
|
|
}
|
|
|
|
nsAutoString usemap;
|
|
mContent->GetAttribute(kNameSpaceID_HTML, nsHTMLAtoms::usemap, usemap);
|
|
|
|
nsCOMPtr<nsIDOMHTMLMapElement> map;
|
|
if (NS_SUCCEEDED(nsImageMapUtils::FindImageMap(doc,usemap,getter_AddRefs(map))) && map) {
|
|
nsCOMPtr<nsIPresShell> presShell;
|
|
aPresContext->GetShell(getter_AddRefs(presShell));
|
|
|
|
mImageMap = new nsImageMap();
|
|
if (mImageMap) {
|
|
NS_ADDREF(mImageMap);
|
|
mImageMap->Init(presShell, this, map);
|
|
}
|
|
}
|
|
}
|
|
|
|
return mImageMap;
|
|
}
|
|
|
|
void
|
|
nsImageFrame::TriggerLink(nsIPresContext* aPresContext,
|
|
const nsString& aURLSpec,
|
|
const nsString& aTargetSpec,
|
|
PRBool aClick)
|
|
{
|
|
// We get here with server side image map
|
|
nsILinkHandler* handler = nsnull;
|
|
aPresContext->GetLinkHandler(&handler);
|
|
if (nsnull != handler) {
|
|
if (aClick) {
|
|
nsresult proceed = NS_OK;
|
|
// Check that this page is allowed to load this URI.
|
|
// Almost a copy of the similarly named method in nsGenericElement
|
|
nsresult rv;
|
|
nsCOMPtr<nsIScriptSecurityManager> securityManager =
|
|
do_GetService(NS_SCRIPTSECURITYMANAGER_CONTRACTID, &rv);
|
|
|
|
nsCOMPtr<nsIPresShell> ps;
|
|
if (NS_SUCCEEDED(rv))
|
|
rv = aPresContext->GetShell(getter_AddRefs(ps));
|
|
nsCOMPtr<nsIDocument> doc;
|
|
if (NS_SUCCEEDED(rv) && ps)
|
|
rv = ps->GetDocument(getter_AddRefs(doc));
|
|
|
|
nsCOMPtr<nsIURI> baseURI;
|
|
if (NS_SUCCEEDED(rv) && doc)
|
|
doc->GetDocumentURL(getter_AddRefs(baseURI));
|
|
nsCOMPtr<nsIURI> absURI;
|
|
if (NS_SUCCEEDED(rv))
|
|
rv = NS_NewURI(getter_AddRefs(absURI), aURLSpec, baseURI);
|
|
|
|
if (NS_SUCCEEDED(rv))
|
|
proceed = securityManager->CheckLoadURI(baseURI, absURI, nsIScriptSecurityManager::STANDARD);
|
|
|
|
// Only pass off the click event if the script security manager
|
|
// says it's ok.
|
|
if (NS_SUCCEEDED(proceed))
|
|
handler->OnLinkClick(mContent, eLinkVerb_Replace, aURLSpec.get(), aTargetSpec.get());
|
|
}
|
|
else {
|
|
handler->OnOverLink(mContent, aURLSpec.get(), aTargetSpec.get());
|
|
}
|
|
NS_RELEASE(handler);
|
|
}
|
|
}
|
|
|
|
PRBool
|
|
nsImageFrame::IsServerImageMap()
|
|
{
|
|
nsAutoString ismap;
|
|
return NS_CONTENT_ATTR_HAS_VALUE ==
|
|
mContent->GetAttribute(kNameSpaceID_HTML, nsHTMLAtoms::ismap, ismap);
|
|
}
|
|
|
|
PRIntn
|
|
nsImageFrame::GetSuppress()
|
|
{
|
|
nsAutoString s;
|
|
if (NS_CONTENT_ATTR_HAS_VALUE ==
|
|
mContent->GetAttribute(kNameSpaceID_HTML, nsHTMLAtoms::suppress, s)) {
|
|
if (s.EqualsIgnoreCase("true")) {
|
|
return SUPPRESS;
|
|
} else if (s.EqualsIgnoreCase("false")) {
|
|
return DONT_SUPPRESS;
|
|
}
|
|
}
|
|
return DEFAULT_SUPPRESS;
|
|
}
|
|
|
|
//XXX the event come's in in view relative coords, but really should
|
|
//be in frame relative coords by the time it hits our frame.
|
|
|
|
// Translate an point that is relative to our view (or a containing
|
|
// view) into a localized pixel coordinate that is relative to the
|
|
// content area of this frame (inside the border+padding).
|
|
void
|
|
nsImageFrame::TranslateEventCoords(nsIPresContext* aPresContext,
|
|
const nsPoint& aPoint,
|
|
nsPoint& aResult)
|
|
{
|
|
nscoord x = aPoint.x;
|
|
nscoord y = aPoint.y;
|
|
|
|
// If we have a view then the event coordinates are already relative
|
|
// to this frame; otherwise we have to adjust the coordinates
|
|
// appropriately.
|
|
nsIView* view;
|
|
GetView(aPresContext, &view);
|
|
if (nsnull == view) {
|
|
nsPoint offset;
|
|
GetOffsetFromView(aPresContext, offset, &view);
|
|
if (nsnull != view) {
|
|
x -= offset.x;
|
|
y -= offset.y;
|
|
}
|
|
}
|
|
|
|
// Subtract out border and padding here so that the coordinates are
|
|
// now relative to the content area of this frame.
|
|
nsRect inner;
|
|
GetInnerArea(aPresContext, inner);
|
|
x -= inner.x;
|
|
y -= inner.y;
|
|
|
|
// Translate the coordinates from twips to pixels
|
|
float t2p;
|
|
aPresContext->GetTwipsToPixels(&t2p);
|
|
aResult.x = NSTwipsToIntPixels(x, t2p);
|
|
aResult.y = NSTwipsToIntPixels(y, t2p);
|
|
}
|
|
|
|
PRBool
|
|
nsImageFrame::GetAnchorHREFAndTarget(nsString& aHref, nsString& aTarget)
|
|
{
|
|
PRBool status = PR_FALSE;
|
|
aHref.Truncate();
|
|
aTarget.Truncate();
|
|
|
|
// Walk up the content tree, looking for an nsIDOMAnchorElement
|
|
nsCOMPtr<nsIContent> content;
|
|
mContent->GetParent(*getter_AddRefs(content));
|
|
while (content) {
|
|
nsCOMPtr<nsIDOMHTMLAnchorElement> anchor(do_QueryInterface(content));
|
|
if (anchor) {
|
|
anchor->GetHref(aHref);
|
|
if (aHref.Length() > 0) {
|
|
status = PR_TRUE;
|
|
}
|
|
anchor->GetTarget(aTarget);
|
|
break;
|
|
}
|
|
nsCOMPtr<nsIContent> parent;
|
|
content->GetParent(*getter_AddRefs(parent));
|
|
content = parent;
|
|
}
|
|
return status;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsImageFrame::GetContentForEvent(nsIPresContext* aPresContext,
|
|
nsEvent* aEvent,
|
|
nsIContent** aContent)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aContent);
|
|
nsImageMap* map;
|
|
map = GetImageMap(aPresContext);
|
|
|
|
if (nsnull != map) {
|
|
nsPoint p;
|
|
TranslateEventCoords(aPresContext, aEvent->point, p);
|
|
nsAutoString absURL, target, altText;
|
|
PRBool suppress;
|
|
PRBool inside = PR_FALSE;
|
|
nsCOMPtr<nsIContent> area;
|
|
inside = map->IsInside(p.x, p.y, getter_AddRefs(area),
|
|
absURL, target, altText,
|
|
&suppress);
|
|
if (inside && area) {
|
|
*aContent = area;
|
|
NS_ADDREF(*aContent);
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
return GetContent(aContent);
|
|
}
|
|
|
|
// XXX what should clicks on transparent pixels do?
|
|
NS_METHOD
|
|
nsImageFrame::HandleEvent(nsIPresContext* aPresContext,
|
|
nsGUIEvent* aEvent,
|
|
nsEventStatus* aEventStatus)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aEventStatus);
|
|
nsImageMap* map;
|
|
|
|
switch (aEvent->message) {
|
|
case NS_MOUSE_LEFT_BUTTON_UP:
|
|
case NS_MOUSE_MOVE:
|
|
{
|
|
map = GetImageMap(aPresContext);
|
|
PRBool isServerMap = IsServerImageMap();
|
|
if ((nsnull != map) || isServerMap) {
|
|
nsPoint p;
|
|
TranslateEventCoords(aPresContext, aEvent->point, p);
|
|
nsAutoString absURL, target, altText;
|
|
PRBool suppress;
|
|
PRBool inside = PR_FALSE;
|
|
// Even though client-side image map triggering happens
|
|
// through content, we need to make sure we're not inside
|
|
// (in case we deal with a case of both client-side and
|
|
// sever-side on the same image - it happens!)
|
|
if (nsnull != map) {
|
|
nsCOMPtr<nsIContent> area;
|
|
inside = map->IsInside(p.x, p.y, getter_AddRefs(area),
|
|
absURL, target, altText,
|
|
&suppress);
|
|
}
|
|
|
|
if (!inside && isServerMap) {
|
|
suppress = GetSuppress();
|
|
nsCOMPtr<nsIURI> baseURL;
|
|
GetBaseURI(getter_AddRefs(baseURL));
|
|
|
|
if (baseURL) {
|
|
// Server side image maps use the href in a containing anchor
|
|
// element to provide the basis for the destination url.
|
|
nsAutoString src;
|
|
if (GetAnchorHREFAndTarget(src, target)) {
|
|
NS_MakeAbsoluteURI(absURL, src, baseURL);
|
|
|
|
// XXX if the mouse is over/clicked in the border/padding area
|
|
// we should probably just pretend nothing happened. Nav4
|
|
// keeps the x,y coordinates positive as we do; IE doesn't
|
|
// bother. Both of them send the click through even when the
|
|
// mouse is over the border.
|
|
if (p.x < 0) p.x = 0;
|
|
if (p.y < 0) p.y = 0;
|
|
char cbuf[50];
|
|
PR_snprintf(cbuf, sizeof(cbuf), "?%d,%d", p.x, p.y);
|
|
absURL.AppendWithConversion(cbuf);
|
|
PRBool clicked = PR_FALSE;
|
|
if (aEvent->message == NS_MOUSE_LEFT_BUTTON_UP) {
|
|
*aEventStatus = nsEventStatus_eConsumeDoDefault;
|
|
clicked = PR_TRUE;
|
|
}
|
|
TriggerLink(aPresContext, absURL, target, clicked);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
NS_WARNING("baseURL is null for imageFrame - ignoring mouse event");
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return nsLeafFrame::HandleEvent(aPresContext, aEvent, aEventStatus);
|
|
}
|
|
|
|
//XXX This will need to be rewritten once we have content for areas
|
|
NS_METHOD
|
|
nsImageFrame::GetCursor(nsIPresContext* aPresContext,
|
|
nsPoint& aPoint,
|
|
PRInt32& aCursor)
|
|
{
|
|
nsImageMap* map = GetImageMap(aPresContext);
|
|
if (nsnull != map) {
|
|
nsPoint p;
|
|
TranslateEventCoords(aPresContext, aPoint, p);
|
|
aCursor = NS_STYLE_CURSOR_DEFAULT;
|
|
if (map->IsInside(p.x, p.y)) {
|
|
// Use style defined cursor if one is provided, otherwise when
|
|
// the cursor style is "auto" we use the pointer cursor.
|
|
const nsStyleUserInterface* styleUserInterface;
|
|
GetStyleData(eStyleStruct_UserInterface, (const nsStyleStruct*&)styleUserInterface);
|
|
aCursor = styleUserInterface->mCursor;
|
|
if (NS_STYLE_CURSOR_AUTO == aCursor) {
|
|
aCursor = NS_STYLE_CURSOR_POINTER;
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
return nsFrame::GetCursor(aPresContext, aPoint, aCursor);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsImageFrame::AttributeChanged(nsIPresContext* aPresContext,
|
|
nsIContent* aChild,
|
|
PRInt32 aNameSpaceID,
|
|
nsIAtom* aAttribute,
|
|
PRInt32 aHint)
|
|
{
|
|
nsresult rv = nsLeafFrame::AttributeChanged(aPresContext, aChild,
|
|
aNameSpaceID, aAttribute, aHint);
|
|
if (NS_OK != rv) {
|
|
return rv;
|
|
}
|
|
if (nsHTMLAtoms::src == aAttribute) {
|
|
nsAutoString newSRC;
|
|
aChild->GetAttribute(kNameSpaceID_None, nsHTMLAtoms::src, newSRC);
|
|
|
|
PRUint32 loadStatus = imgIRequest::STATUS_ERROR;
|
|
|
|
if (mImageRequest)
|
|
mImageRequest->GetImageStatus(&loadStatus);
|
|
|
|
if (!(loadStatus & imgIRequest::STATUS_SIZE_AVAILABLE)) {
|
|
if (mImageRequest) {
|
|
mFailureReplace = PR_FALSE; // don't cause a CantRenderReplacedElement call
|
|
mImageRequest->Cancel(NS_ERROR_FAILURE);
|
|
mImageRequest = nsnull;
|
|
}
|
|
|
|
mCanSendLoadEvent = PR_TRUE;
|
|
}
|
|
|
|
LoadImage(newSRC, aPresContext, getter_AddRefs(mImageRequest));
|
|
}
|
|
else if (nsHTMLAtoms::width == aAttribute || nsHTMLAtoms::height == aAttribute)
|
|
{ // XXX: could check for new width == old width, and make that a no-op
|
|
nsCOMPtr<nsIPresShell> presShell;
|
|
aPresContext->GetShell(getter_AddRefs(presShell));
|
|
mState |= NS_FRAME_IS_DIRTY;
|
|
mParent->ReflowDirtyChild(presShell, (nsIFrame*) this);
|
|
// NOTE: mSizeFixed will be updated in Reflow...
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsImageFrame::GetFrameType(nsIAtom** aType) const
|
|
{
|
|
NS_PRECONDITION(nsnull != aType, "null OUT parameter pointer");
|
|
*aType = nsLayoutAtoms::imageFrame;
|
|
NS_ADDREF(*aType);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsImageFrame::GetIntrinsicImageSize(nsSize& aSize)
|
|
{
|
|
aSize = mIntrinsicSize;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsImageFrame::GetNaturalImageSize(PRUint32 *naturalWidth,
|
|
PRUint32 *naturalHeight)
|
|
{
|
|
*naturalWidth = 0;
|
|
*naturalHeight = 0;
|
|
|
|
if (mImageRequest) {
|
|
nsCOMPtr<imgIContainer> container;
|
|
mImageRequest->GetImage(getter_AddRefs(container));
|
|
if (container) {
|
|
PRInt32 w, h;
|
|
container->GetWidth(&w);
|
|
container->GetHeight(&h);
|
|
|
|
*naturalWidth = NS_STATIC_CAST(PRUint32, w);
|
|
*naturalHeight = NS_STATIC_CAST(PRUint32, h);
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsImageFrame::GetImageRequest(imgIRequest **aRequest)
|
|
{
|
|
*aRequest = mImageRequest;
|
|
NS_IF_ADDREF(*aRequest);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsImageFrame::IsImageComplete(PRBool* aComplete)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aComplete);
|
|
if (!mImageRequest) {
|
|
*aComplete = PR_FALSE;
|
|
return NS_OK;
|
|
}
|
|
|
|
PRUint32 status;
|
|
mImageRequest->GetImageStatus(&status);
|
|
*aComplete = ((status & imgIRequest::STATUS_LOAD_COMPLETE) != 0);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void HaveFixedSize(const nsHTMLReflowState& aReflowState, PRPackedBool& aConstrainedSize)
|
|
{
|
|
// check the width and height values in the reflow state's style struct
|
|
// - if width and height are specified as either coord or percentage, then
|
|
// the size of the image frame is constrained
|
|
nsStyleUnit widthUnit = aReflowState.mStylePosition->mWidth.GetUnit();
|
|
nsStyleUnit heightUnit = aReflowState.mStylePosition->mHeight.GetUnit();
|
|
|
|
aConstrainedSize =
|
|
((widthUnit == eStyleUnit_Coord ||
|
|
widthUnit == eStyleUnit_Percent) &&
|
|
(heightUnit == eStyleUnit_Coord ||
|
|
heightUnit == eStyleUnit_Percent));
|
|
}
|
|
|
|
|
|
nsresult
|
|
nsImageFrame::LoadImage(const nsAReadableString& aSpec, nsIPresContext *aPresContext, imgIRequest **aRequest)
|
|
{
|
|
nsresult rv = NS_OK;
|
|
|
|
/* set this to TRUE here in case we return early */
|
|
mInitialLoadCompleted = PR_TRUE;
|
|
|
|
/* don't load the image if aSpec is empty */
|
|
if (aSpec.IsEmpty()) return NS_ERROR_FAILURE;
|
|
|
|
nsCOMPtr<nsIURI> realURI;
|
|
|
|
/* don't load the image if some security check fails... */
|
|
GetRealURI(aSpec, getter_AddRefs(realURI));
|
|
if (!CanLoadImage(realURI)) return NS_ERROR_FAILURE;
|
|
|
|
if (!mListener) {
|
|
nsImageListener *listener = new nsImageListener(this);
|
|
if (!listener) return NS_ERROR_OUT_OF_MEMORY;
|
|
NS_ADDREF(listener);
|
|
listener->QueryInterface(NS_GET_IID(imgIDecoderObserver), getter_AddRefs(mListener));
|
|
NS_ASSERTION(mListener, "queryinterface for the listener failed");
|
|
NS_RELEASE(listener);
|
|
}
|
|
|
|
nsCOMPtr<imgILoader> il(do_GetService("@mozilla.org/image/loader;1", &rv));
|
|
if (NS_FAILED(rv)) return rv;
|
|
|
|
nsCOMPtr<nsILoadGroup> loadGroup;
|
|
GetLoadGroup(aPresContext, getter_AddRefs(loadGroup));
|
|
|
|
/* get the URI, convert internal-gopher-stuff if needed */
|
|
nsCOMPtr<nsIURI> uri;
|
|
GetURI(aSpec, getter_AddRefs(uri));
|
|
if (!uri)
|
|
uri = realURI;
|
|
|
|
/* set this back to FALSE before we do the real load */
|
|
mInitialLoadCompleted = PR_FALSE;
|
|
|
|
return il->LoadImage(uri, loadGroup, mListener, aPresContext, nsIRequest::LOAD_NORMAL, aRequest);
|
|
}
|
|
|
|
#define INTERNAL_GOPHER_LENGTH 16 /* "internal-gopher-" length */
|
|
|
|
void
|
|
nsImageFrame::GetURI(const nsAReadableString& aSpec, nsIURI **aURI)
|
|
{
|
|
*aURI = nsnull;
|
|
|
|
/* Note: navigator 4.* and earlier releases ignored the base tags
|
|
effect on the builtin images. So we do too. Use aSpec instead
|
|
of the absolute url...
|
|
*/
|
|
|
|
/* The prefix for special "internal" images that are well known.
|
|
Look and see if this is an internal-gopher- url.
|
|
*/
|
|
if (NS_LITERAL_STRING("internal-gopher-").Equals(Substring(aSpec, 0, INTERNAL_GOPHER_LENGTH))) {
|
|
nsAutoString newURI;
|
|
newURI.Assign(NS_LITERAL_STRING("resource:/res/html/gopher-") +
|
|
Substring(aSpec, INTERNAL_GOPHER_LENGTH, aSpec.Length() - INTERNAL_GOPHER_LENGTH) +
|
|
NS_LITERAL_STRING(".gif"));
|
|
GetRealURI(newURI, aURI);
|
|
}
|
|
}
|
|
|
|
void
|
|
nsImageFrame::GetRealURI(const nsAReadableString& aSpec, nsIURI **aURI)
|
|
{
|
|
nsCOMPtr<nsIURI> baseURI;
|
|
GetBaseURI(getter_AddRefs(baseURI));
|
|
NS_NewURI(aURI, aSpec, baseURI);
|
|
}
|
|
|
|
void
|
|
nsImageFrame::GetBaseURI(nsIURI **aURI)
|
|
{
|
|
NS_PRECONDITION(nsnull != aURI, "null OUT parameter pointer");
|
|
|
|
nsresult rv;
|
|
nsCOMPtr<nsIURI> baseURI;
|
|
nsCOMPtr<nsIHTMLContent> htmlContent(do_QueryInterface(mContent, &rv));
|
|
if (NS_SUCCEEDED(rv)) {
|
|
htmlContent->GetBaseURL(*getter_AddRefs(baseURI));
|
|
}
|
|
else {
|
|
nsCOMPtr<nsIDocument> doc;
|
|
if (mContent) {
|
|
rv = mContent->GetDocument(*getter_AddRefs(doc));
|
|
if (doc) {
|
|
doc->GetBaseURL(*getter_AddRefs(baseURI));
|
|
}
|
|
}
|
|
}
|
|
*aURI = baseURI;
|
|
NS_IF_ADDREF(*aURI);
|
|
}
|
|
|
|
void
|
|
nsImageFrame::GetLoadGroup(nsIPresContext *aPresContext, nsILoadGroup **aLoadGroup)
|
|
{
|
|
if (!aPresContext)
|
|
return;
|
|
|
|
NS_PRECONDITION(nsnull != aLoadGroup, "null OUT parameter pointer");
|
|
|
|
nsCOMPtr<nsIPresShell> shell;
|
|
aPresContext->GetShell(getter_AddRefs(shell));
|
|
|
|
if (!shell)
|
|
return;
|
|
|
|
nsCOMPtr<nsIDocument> doc;
|
|
shell->GetDocument(getter_AddRefs(doc));
|
|
if (!doc)
|
|
return;
|
|
|
|
doc->GetDocumentLoadGroup(aLoadGroup);
|
|
}
|
|
|
|
|
|
PRBool
|
|
nsImageFrame::CanLoadImage(nsIURI *aURI)
|
|
{
|
|
|
|
PRBool shouldLoad = PR_TRUE; // default permit
|
|
|
|
#if 0
|
|
nsCOMPtr<nsIScriptSecurityManager> securityManager(do_GetService(NS_SCRIPTSECURITYMANAGER_CONTRACTID));
|
|
|
|
if (securityManager) {
|
|
nsCOMPtr<nsIURI> baseURI;
|
|
GetBaseURI(getter_AddRefs(baseURI));
|
|
|
|
nsresult proceed = securityManager->CheckLoadURI(baseURI, aURI, nsIScriptSecurityManager::STANDARD);
|
|
if (NS_FAILED(proceed))
|
|
return PR_FALSE;
|
|
}
|
|
#endif
|
|
|
|
// Check with the content-policy things to make sure this load is permitted.
|
|
nsresult rv;
|
|
nsCOMPtr<nsIDOMElement> element(do_QueryInterface(mContent));
|
|
|
|
if (!element) // this would seem bad(tm)
|
|
return shouldLoad;
|
|
|
|
nsCOMPtr<nsIDocument> document;
|
|
if (mContent) {
|
|
rv = mContent->GetDocument(*getter_AddRefs(document));
|
|
if (! document) {
|
|
NS_ASSERTION(0, "expecting a document");
|
|
return shouldLoad;
|
|
}
|
|
|
|
nsCOMPtr<nsIScriptGlobalObject> globalScript;
|
|
rv = document->GetScriptGlobalObject(getter_AddRefs(globalScript));
|
|
if (NS_FAILED(rv)) return shouldLoad;
|
|
|
|
nsCOMPtr<nsIDOMWindow> domWin(do_QueryInterface(globalScript));
|
|
|
|
rv = NS_CheckContentLoadPolicy(nsIContentPolicy::IMAGE,
|
|
aURI, element, domWin, &shouldLoad);
|
|
if (NS_SUCCEEDED(rv) && !shouldLoad)
|
|
return shouldLoad;
|
|
}
|
|
|
|
/* ... additional checks ? */
|
|
|
|
return shouldLoad;
|
|
}
|
|
|
|
|
|
|
|
#ifdef DEBUG
|
|
NS_IMETHODIMP
|
|
nsImageFrame::SizeOf(nsISizeOfHandler* aHandler, PRUint32* aResult) const
|
|
{
|
|
#if 0
|
|
if (!aResult) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
PRUint32 sum;
|
|
mImageLoader.SizeOf(aHandler, &sum);
|
|
sum += sizeof(*this) - sizeof(mImageLoader);
|
|
if (mImageMap) {
|
|
PRBool recorded;
|
|
aHandler->RecordObject((void*) mImageMap, &recorded);
|
|
if (!recorded) {
|
|
PRUint32 mapSize;
|
|
mImageMap->SizeOf(aHandler, &mapSize);
|
|
aHandler->AddSize(nsLayoutAtoms::imageMap, mapSize);
|
|
}
|
|
}
|
|
*aResult = sum;
|
|
#endif
|
|
*aResult = 0;
|
|
|
|
return NS_OK;
|
|
}
|
|
#endif
|
|
|
|
|
|
NS_IMPL_ISUPPORTS2(nsImageListener, imgIDecoderObserver, imgIContainerObserver)
|
|
|
|
nsImageListener::nsImageListener(nsImageFrame *aFrame) :
|
|
mFrame(aFrame)
|
|
{
|
|
NS_INIT_ISUPPORTS();
|
|
}
|
|
|
|
nsImageListener::~nsImageListener()
|
|
{
|
|
}
|
|
|
|
NS_IMETHODIMP nsImageListener::OnStartDecode(imgIRequest *aRequest, nsISupports *aContext)
|
|
{
|
|
if (!mFrame)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
nsCOMPtr<nsIPresContext> pc(do_QueryInterface(aContext));
|
|
|
|
NS_ASSERTION(pc, "not a pres context!");
|
|
|
|
return mFrame->OnStartDecode(aRequest, pc);
|
|
}
|
|
|
|
NS_IMETHODIMP nsImageListener::OnStartContainer(imgIRequest *aRequest, nsISupports *aContext, imgIContainer *aImage)
|
|
{
|
|
if (!mFrame)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
nsCOMPtr<nsIPresContext> pc(do_QueryInterface(aContext));
|
|
|
|
NS_ASSERTION(pc, "not a pres context!");
|
|
|
|
return mFrame->OnStartContainer(aRequest, pc, aImage);
|
|
}
|
|
|
|
NS_IMETHODIMP nsImageListener::OnStartFrame(imgIRequest *aRequest, nsISupports *aContext, gfxIImageFrame *aFrame)
|
|
{
|
|
if (!mFrame)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
nsCOMPtr<nsIPresContext> pc(do_QueryInterface(aContext));
|
|
|
|
NS_ASSERTION(pc, "not a pres context!");
|
|
|
|
return mFrame->OnStartFrame(aRequest, pc, aFrame);
|
|
}
|
|
|
|
NS_IMETHODIMP nsImageListener::OnDataAvailable(imgIRequest *aRequest, nsISupports *aContext, gfxIImageFrame *aFrame, const nsRect *aRect)
|
|
{
|
|
if (!mFrame)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
nsCOMPtr<nsIPresContext> pc(do_QueryInterface(aContext));
|
|
|
|
NS_ASSERTION(pc, "not a pres context!");
|
|
|
|
return mFrame->OnDataAvailable(aRequest, pc, aFrame, aRect);
|
|
}
|
|
|
|
NS_IMETHODIMP nsImageListener::OnStopFrame(imgIRequest *aRequest, nsISupports *aContext, gfxIImageFrame *aFrame)
|
|
{
|
|
if (!mFrame)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
nsCOMPtr<nsIPresContext> pc(do_QueryInterface(aContext));
|
|
|
|
NS_ASSERTION(pc, "not a pres context!");
|
|
|
|
return mFrame->OnStopFrame(aRequest, pc, aFrame);
|
|
}
|
|
|
|
NS_IMETHODIMP nsImageListener::OnStopContainer(imgIRequest *aRequest, nsISupports *aContext, imgIContainer *aImage)
|
|
{
|
|
if (!mFrame)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
nsCOMPtr<nsIPresContext> pc(do_QueryInterface(aContext));
|
|
|
|
NS_ASSERTION(pc, "not a pres context!");
|
|
|
|
return mFrame->OnStopContainer(aRequest, pc, aImage);
|
|
}
|
|
|
|
NS_IMETHODIMP nsImageListener::OnStopDecode(imgIRequest *aRequest, nsISupports *aContext, nsresult status, const PRUnichar *statusArg)
|
|
{
|
|
if (!mFrame)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
nsCOMPtr<nsIPresContext> pc(do_QueryInterface(aContext));
|
|
|
|
NS_ASSERTION(pc, "not a pres context!");
|
|
|
|
return mFrame->OnStopDecode(aRequest, pc, status, statusArg);
|
|
}
|
|
|
|
NS_IMETHODIMP nsImageListener::FrameChanged(imgIContainer *aContainer, nsISupports *aContext, gfxIImageFrame *newframe, nsRect * dirtyRect)
|
|
{
|
|
if (!mFrame)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
nsCOMPtr<nsIPresContext> pc(do_QueryInterface(aContext));
|
|
|
|
NS_ASSERTION(pc, "not a pres context!");
|
|
|
|
return mFrame->FrameChanged(aContainer, pc, newframe, dirtyRect);
|
|
}
|
|
|