зеркало из https://github.com/mozilla/pjs.git
935 строки
28 KiB
C++
935 строки
28 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 "nsIFrameImageLoader.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 "nsIHTMLAttributes.h"
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#include "nsIDocument.h"
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#include "nsIHTMLDocument.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 "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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#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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static NS_DEFINE_IID(kIHTMLDocumentIID, NS_IHTMLDOCUMENT_IID);
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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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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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{
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}
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NS_METHOD
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nsImageFrame::Destroy(nsIPresContext* aPresContext)
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{
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NS_IF_RELEASE(mImageMap);
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// Release image loader first so that it's refcnt can go to zero
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mImageLoader.StopAllLoadImages(aPresContext);
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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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// Set the image loader's source URL and base URL
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nsIURI* baseURL = nsnull;
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nsIHTMLContent* htmlContent;
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rv = mContent->QueryInterface(kIHTMLContentIID, (void**)&htmlContent);
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if (NS_SUCCEEDED(rv)) {
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htmlContent->GetBaseURL(baseURL);
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NS_RELEASE(htmlContent);
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}
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else {
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nsIDocument* doc;
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rv = mContent->GetDocument(doc);
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if (NS_SUCCEEDED(rv)) {
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doc->GetBaseURL(baseURL);
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NS_RELEASE(doc);
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}
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}
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mImageLoader.Init(this, UpdateImageFrame, nsnull, baseURL, src);
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NS_IF_RELEASE(baseURL);
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return rv;
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}
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nsresult
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nsImageFrame::UpdateImageFrame(nsIPresContext* aPresContext,
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nsHTMLImageLoader* aLoader,
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nsIFrame* aFrame,
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void* aClosure,
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PRUint32 aStatus)
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{
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nsImageFrame* frame = (nsImageFrame*) aFrame;
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return frame->UpdateImage(aPresContext, aStatus);
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}
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nsresult
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nsImageFrame::UpdateImage(nsIPresContext* aPresContext, PRUint32 aStatus)
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{
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#ifdef NOISY_IMAGE_LOADING
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ListTag(stdout);
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printf(": UpdateImage: status=%x\n", aStatus);
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#endif
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nsCOMPtr<nsIPresShell> presShell;
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aPresContext->GetShell(getter_AddRefs(presShell));
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if (NS_IMAGE_LOAD_STATUS_ERROR & aStatus) {
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// We failed to load the image. Notify the pres shell
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if (presShell) {
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presShell->CantRenderReplacedElement(aPresContext, this);
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}
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}
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else if (NS_IMAGE_LOAD_STATUS_SIZE_AVAILABLE & aStatus) {
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if (mParent) {
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mState |= NS_FRAME_IS_DIRTY;
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mParent->ReflowDirtyChild(presShell, (nsIFrame*) this);
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}
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else {
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NS_ASSERTION(0, "No parent to pass the reflow request up to.");
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}
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}
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return NS_OK;
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}
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void
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nsImageFrame::GetDesiredSize(nsIPresContext* aPresContext,
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const nsHTMLReflowState& aReflowState,
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nsHTMLReflowMetrics& aDesiredSize)
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{
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if (mImageLoader.GetDesiredSize(aPresContext, &aReflowState, aDesiredSize)) {
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// We have our "final" desired size. Cancel any pending
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// incremental reflows aimed at this frame.
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nsIPresShell* shell;
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aPresContext->GetShell(&shell);
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if (shell) {
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shell->CancelReflowCommand(this, nsnull);
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NS_RELEASE(shell);
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}
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}
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}
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void
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nsImageFrame::GetInnerArea(nsIPresContext* aPresContext,
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nsRect& aInnerArea) const
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{
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aInnerArea.x = mBorderPadding.left;
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aInnerArea.y = mBorderPadding.top;
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aInnerArea.width = mRect.width -
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(mBorderPadding.left + mBorderPadding.right);
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aInnerArea.height = mRect.height -
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(mBorderPadding.top + mBorderPadding.bottom);
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}
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NS_IMETHODIMP
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nsImageFrame::Reflow(nsIPresContext* aPresContext,
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nsHTMLReflowMetrics& aMetrics,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus)
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{
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NS_FRAME_TRACE(NS_FRAME_TRACE_CALLS,
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("enter nsImageFrame::Reflow: aMaxSize=%d,%d",
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aReflowState.availableWidth, aReflowState.availableHeight));
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NS_PRECONDITION(mState & NS_FRAME_IN_REFLOW, "frame is not in reflow");
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GetDesiredSize(aPresContext, aReflowState, aMetrics);
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AddBordersAndPadding(aPresContext, aReflowState, aMetrics, mBorderPadding);
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if (nsnull != aMetrics.maxElementSize) {
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// If we have a percentage based width, then our maximum width is 0
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if (eStyleUnit_Percent == aReflowState.mStylePosition->mWidth.GetUnit()) {
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aMetrics.maxElementSize->width = 0;
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} else {
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aMetrics.maxElementSize->width = aMetrics.width;
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}
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aMetrics.maxElementSize->height = aMetrics.height;
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}
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aStatus = NS_FRAME_COMPLETE;
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NS_FRAME_TRACE(NS_FRAME_TRACE_CALLS,
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("exit nsImageFrame::Reflow: size=%d,%d",
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aMetrics.width, aMetrics.height));
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return NS_OK;
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}
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// Computes the width of the specified string. aMaxWidth specifies the maximum
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// width available. Once this limit is reached no more characters are measured.
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// The number of characters that fit within the maximum width are returned in
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// aMaxFit. NOTE: it is assumed that the fontmetrics have already been selected
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// into the rendering context before this is called (for performance). MMP
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void
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nsImageFrame::MeasureString(const PRUnichar* aString,
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PRInt32 aLength,
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nscoord aMaxWidth,
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PRUint32& aMaxFit,
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nsIRenderingContext& aContext)
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{
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nscoord totalWidth = 0;
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nscoord spaceWidth;
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aContext.GetWidth(' ', spaceWidth);
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aMaxFit = 0;
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while (aLength > 0) {
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// Find the next place we can line break
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PRUint32 len = aLength;
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PRBool trailingSpace = PR_FALSE;
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for (PRInt32 i = 0; i < aLength; i++) {
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if (XP_IS_SPACE(aString[i]) && (i > 0)) {
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len = i; // don't include the space when measuring
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trailingSpace = PR_TRUE;
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break;
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}
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}
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// Measure this chunk of text, and see if it fits
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nscoord width;
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aContext.GetWidth(aString, len, width);
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PRBool fits = (totalWidth + width) <= aMaxWidth;
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// If it fits on the line, or it's the first word we've processed then
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// include it
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if (fits || (0 == totalWidth)) {
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// New piece fits
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totalWidth += width;
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// If there's a trailing space then see if it fits as well
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if (trailingSpace) {
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if ((totalWidth + spaceWidth) <= aMaxWidth) {
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totalWidth += spaceWidth;
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} else {
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// Space won't fit. Leave it at the end but don't include it in
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// the width
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fits = PR_FALSE;
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}
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len++;
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}
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aMaxFit += len;
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aString += len;
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aLength -= len;
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}
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if (!fits) {
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break;
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}
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}
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}
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// Formats the alt-text to fit within the specified rectangle. Breaks lines
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// between words if a word would extend past the edge of the rectangle
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void
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nsImageFrame::DisplayAltText(nsIPresContext* aPresContext,
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nsIRenderingContext& aRenderingContext,
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const nsString& aAltText,
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const nsRect& aRect)
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{
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const nsStyleColor* color =
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(const nsStyleColor*)mStyleContext->GetStyleData(eStyleStruct_Color);
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const nsStyleFont* font =
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(const nsStyleFont*)mStyleContext->GetStyleData(eStyleStruct_Font);
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// Set font and color
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aRenderingContext.SetColor(color->mColor);
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aRenderingContext.SetFont(font->mFont);
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// Format the text to display within the formatting rect
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nsIFontMetrics* fm;
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aRenderingContext.GetFontMetrics(fm);
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nscoord maxDescent, height;
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fm->GetMaxDescent(maxDescent);
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fm->GetHeight(height);
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// XXX It would be nice if there was a way to have the font metrics tell
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// use where to break the text given a maximum width. At a minimum we need
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// to be able to get the break character...
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const PRUnichar* str = aAltText.GetUnicode();
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PRInt32 strLen = aAltText.Length();
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nscoord y = aRect.y;
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while ((strLen > 0) && ((y + maxDescent) < aRect.YMost())) {
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// Determine how much of the text to display on this line
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PRUint32 maxFit; // number of characters that fit
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MeasureString(str, strLen, aRect.width, maxFit, aRenderingContext);
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// Display the text
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aRenderingContext.DrawString(str, maxFit, aRect.x, y);
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// Move to the next line
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str += maxFit;
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strLen -= maxFit;
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y += height;
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}
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NS_RELEASE(fm);
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}
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struct nsRecessedBorder : public nsStyleSpacing {
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nsRecessedBorder(nscoord aBorderWidth)
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: nsStyleSpacing()
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{
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nsStyleCoord styleCoord(aBorderWidth);
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mBorder.SetLeft(styleCoord);
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mBorder.SetTop(styleCoord);
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mBorder.SetRight(styleCoord);
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mBorder.SetBottom(styleCoord);
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mBorderStyle[0] = NS_STYLE_BORDER_STYLE_INSET;
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mBorderStyle[1] = NS_STYLE_BORDER_STYLE_INSET;
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mBorderStyle[2] = NS_STYLE_BORDER_STYLE_INSET;
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mBorderStyle[3] = NS_STYLE_BORDER_STYLE_INSET;
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mBorderColor[0] = 0;
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mBorderColor[1] = 0;
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mBorderColor[2] = 0;
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mBorderColor[3] = 0;
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mHasCachedMargin = mHasCachedPadding = mHasCachedBorder = PR_FALSE;
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}
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};
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void
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nsImageFrame::DisplayAltFeedback(nsIPresContext* aPresContext,
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nsIRenderingContext& aRenderingContext,
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PRInt32 aIconId)
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{
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// Calculate the inner area
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nsRect inner;
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GetInnerArea(aPresContext, inner);
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// Display a recessed one pixel border
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float p2t;
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nscoord borderEdgeWidth;
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aPresContext->GetScaledPixelsToTwips(&p2t);
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borderEdgeWidth = NSIntPixelsToTwips(1, p2t);
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// Make sure we have enough room to actually render the border within
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// our frame bounds
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if ((inner.width < 2 * borderEdgeWidth) || (inner.height < 2 * borderEdgeWidth)) {
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return;
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}
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// Paint the border
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nsRecessedBorder recessedBorder(borderEdgeWidth);
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nsCSSRendering::PaintBorder(aPresContext, aRenderingContext, this, inner,
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inner, recessedBorder, mStyleContext, 0);
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// Adjust the inner rect to account for the one pixel recessed border,
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// and a six pixel padding on each edge
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inner.Deflate(NSIntPixelsToTwips(7, p2t), NSIntPixelsToTwips(7, p2t));
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if (inner.IsEmpty()) {
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return;
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}
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// Clip so we don't render outside the inner rect
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PRBool clipState;
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aRenderingContext.PushState();
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aRenderingContext.SetClipRect(inner, nsClipCombine_kIntersect, clipState);
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// Display the icon
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nsIDeviceContext* dc;
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aRenderingContext.GetDeviceContext(dc);
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nsIImage* icon;
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if (NS_SUCCEEDED(dc->LoadIconImage(aIconId, icon)) && icon) {
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aRenderingContext.DrawImage(icon, inner.x, inner.y);
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// Reduce the inner rect by the width of the icon, and leave an
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// additional six pixels padding
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PRInt32 iconWidth = NSIntPixelsToTwips(icon->GetWidth() + 6, p2t);
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inner.x += iconWidth;
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inner.width -= iconWidth;
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NS_RELEASE(icon);
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}
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NS_RELEASE(dc);
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// If there's still room, display the alt-text
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if (!inner.IsEmpty()) {
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nsAutoString altText;
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if (NS_CONTENT_ATTR_HAS_VALUE == mContent->GetAttribute(kNameSpaceID_HTML, nsHTMLAtoms::alt, altText)) {
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DisplayAltText(aPresContext, aRenderingContext, altText, inner);
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}
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}
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aRenderingContext.PopState(clipState);
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}
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NS_METHOD
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nsImageFrame::Paint(nsIPresContext* aPresContext,
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nsIRenderingContext& aRenderingContext,
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const nsRect& aDirtyRect,
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nsFramePaintLayer aWhichLayer)
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{
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const nsStyleDisplay* disp = (const nsStyleDisplay*)
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mStyleContext->GetStyleData(eStyleStruct_Display);
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if (disp->mVisible && mRect.width && mRect.height) {
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if (NS_STYLE_OVERFLOW_HIDDEN == disp->mOverflow) {
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aRenderingContext.PushState();
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SetClipRect(aRenderingContext);
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}
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// First paint background and borders
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nsLeafFrame::Paint(aPresContext, aRenderingContext, aDirtyRect,
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aWhichLayer);
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nsIImage* image = mImageLoader.GetImage();
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if (nsnull == image) {
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// No image yet, or image load failed. Draw the alt-text and an icon
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// indicating the status
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if (NS_FRAME_PAINT_LAYER_BACKGROUND == aWhichLayer) {
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DisplayAltFeedback(aPresContext, aRenderingContext,
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mImageLoader.GetLoadImageFailed()
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? NS_ICON_BROKEN_IMAGE
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: NS_ICON_LOADING_IMAGE);
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}
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}
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else {
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if (NS_FRAME_PAINT_LAYER_FOREGROUND == aWhichLayer) {
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// Now render the image into our content area (the area inside the
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// borders and padding)
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nsRect inner;
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GetInnerArea(aPresContext, inner);
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if (mImageLoader.GetLoadImageFailed()) {
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float p2t;
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aPresContext->GetScaledPixelsToTwips(&p2t);
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inner.width = NSIntPixelsToTwips(image->GetWidth(), p2t);
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inner.height = NSIntPixelsToTwips(image->GetHeight(), p2t);
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}
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aRenderingContext.DrawImage(image, inner);
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}
|
|
|
|
#ifdef DEBUG
|
|
if ((NS_FRAME_PAINT_LAYER_DEBUG == aWhichLayer) &&
|
|
GetShowFrameBorders()) {
|
|
nsImageMap* map = GetImageMap();
|
|
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
|
|
}
|
|
|
|
NS_IF_RELEASE(image);
|
|
|
|
if (NS_STYLE_OVERFLOW_HIDDEN == disp->mOverflow) {
|
|
PRBool clipState;
|
|
aRenderingContext.PopState(clipState);
|
|
}
|
|
}
|
|
|
|
return nsFrame::Paint(aPresContext, aRenderingContext, aDirtyRect, aWhichLayer);
|
|
}
|
|
|
|
nsImageMap*
|
|
nsImageFrame::GetImageMap()
|
|
{
|
|
if (nsnull == mImageMap) {
|
|
nsAutoString usemap;
|
|
mContent->GetAttribute(kNameSpaceID_HTML, nsHTMLAtoms::usemap, usemap);
|
|
if (0 == usemap.Length()) {
|
|
return nsnull;
|
|
}
|
|
|
|
// Strip out whitespace in the name for navigator compatability
|
|
// XXX NAV QUIRK
|
|
usemap.StripWhitespace();
|
|
|
|
nsIDocument* doc = nsnull;
|
|
mContent->GetDocument(doc);
|
|
if (nsnull == doc) {
|
|
return nsnull;
|
|
}
|
|
|
|
if (usemap.First() == '#') {
|
|
usemap.Cut(0, 1);
|
|
}
|
|
nsIHTMLDocument* hdoc;
|
|
nsresult rv = doc->QueryInterface(kIHTMLDocumentIID, (void**)&hdoc);
|
|
NS_RELEASE(doc);
|
|
if (NS_SUCCEEDED(rv)) {
|
|
nsIDOMHTMLMapElement* map;
|
|
rv = hdoc->GetImageMap(usemap, &map);
|
|
NS_RELEASE(hdoc);
|
|
if (NS_SUCCEEDED(rv)) {
|
|
mImageMap = new nsImageMap();
|
|
if (nsnull != mImageMap) {
|
|
NS_ADDREF(mImageMap);
|
|
mImageMap->Init(map);
|
|
}
|
|
NS_IF_RELEASE(map);
|
|
}
|
|
}
|
|
}
|
|
|
|
return mImageMap;
|
|
}
|
|
|
|
void
|
|
nsImageFrame::TriggerLink(nsIPresContext* aPresContext,
|
|
const nsString& aURLSpec,
|
|
const nsString& aTargetSpec,
|
|
PRBool aClick)
|
|
{
|
|
nsILinkHandler* handler = nsnull;
|
|
aPresContext->GetLinkHandler(&handler);
|
|
if (nsnull != handler) {
|
|
if (aClick) {
|
|
handler->OnLinkClick(mContent, eLinkVerb_Replace, aURLSpec.GetUnicode(), aTargetSpec.GetUnicode());
|
|
}
|
|
else {
|
|
handler->OnOverLink(mContent, aURLSpec.GetUnicode(), aTargetSpec.GetUnicode());
|
|
}
|
|
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::GetAnchorHREF(nsString& aResult)
|
|
{
|
|
PRBool status = PR_FALSE;
|
|
aResult.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(aResult);
|
|
if (aResult.Length() > 0) {
|
|
status = PR_TRUE;
|
|
}
|
|
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();
|
|
|
|
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();
|
|
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();
|
|
nsIURI* baseURL = nsnull;
|
|
nsIHTMLContent* htmlContent;
|
|
if (NS_SUCCEEDED(mContent->QueryInterface(kIHTMLContentIID,
|
|
(void**)&htmlContent))) {
|
|
htmlContent->GetBaseURL(baseURL);
|
|
NS_RELEASE(htmlContent);
|
|
}
|
|
else {
|
|
nsIDocument* doc;
|
|
if (NS_SUCCEEDED(mContent->GetDocument(doc))) {
|
|
doc->GetBaseURL(baseURL);
|
|
NS_RELEASE(doc);
|
|
}
|
|
}
|
|
|
|
// Server side image maps use the href in a containing anchor
|
|
// element to provide the basis for the destination url.
|
|
nsAutoString src;
|
|
if (GetAnchorHREF(src)) {
|
|
NS_MakeAbsoluteURI(src, baseURL, absURL);
|
|
NS_IF_RELEASE(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.Append(cbuf);
|
|
PRBool clicked = PR_FALSE;
|
|
if (aEvent->message == NS_MOUSE_LEFT_BUTTON_UP) {
|
|
*aEventStatus = nsEventStatus_eConsumeDoDefault;
|
|
clicked = PR_TRUE;
|
|
}
|
|
TriggerLink(aPresContext, absURL, target, clicked);
|
|
}
|
|
}
|
|
}
|
|
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();
|
|
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 nsStyleColor* styleColor;
|
|
GetStyleData(eStyleStruct_Color, (const nsStyleStruct*&)styleColor);
|
|
aCursor = styleColor->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 oldSRC, newSRC;
|
|
mImageLoader.GetURLSpec(oldSRC);
|
|
aChild->GetAttribute(kNameSpaceID_None, nsHTMLAtoms::src, newSRC);
|
|
if (!oldSRC.Equals(newSRC)) {
|
|
#ifdef NOISY_IMAGE_LOADING
|
|
ListTag(stdout);
|
|
printf(": new image source; old='");
|
|
fputs(oldSRC, stdout);
|
|
printf("' new='");
|
|
fputs(newSRC, stdout);
|
|
printf("'\n");
|
|
#endif
|
|
if (mImageLoader.IsImageSizeKnown()) {
|
|
mImageLoader.UpdateURLSpec(aPresContext, newSRC);
|
|
PRUint32 loadStatus = mImageLoader.GetLoadStatus();
|
|
if (loadStatus & NS_IMAGE_LOAD_STATUS_IMAGE_READY) {
|
|
// Trigger a paint now because image-loader won't if the
|
|
// image is already loaded and ready to go.
|
|
Invalidate(aPresContext, nsRect(0, 0, mRect.width, mRect.height), PR_FALSE);
|
|
}
|
|
}
|
|
else {
|
|
// Force a reflow when the image size isn't already known
|
|
if (nsnull != mContent) {
|
|
nsIDocument* document = nsnull;
|
|
mContent->GetDocument(document);
|
|
if (nsnull != document) {
|
|
document->ContentChanged(mContent, nsnull);
|
|
NS_RELEASE(document);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
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)
|
|
{
|
|
nsIImage* image = mImageLoader.GetImage();
|
|
if (nsnull != image) {
|
|
aSize.width = image->GetWidth();
|
|
aSize.height = image->GetHeight();
|
|
}
|
|
else {
|
|
aSize.width = 0;
|
|
aSize.height = 0;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsImageFrame::IsImageComplete(PRBool* aComplete)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aComplete);
|
|
*aComplete = (PRBool)(mImageLoader.GetLoadStatus() & NS_IMAGE_LOAD_STATUS_IMAGE_READY);
|
|
return NS_OK;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
NS_IMETHODIMP
|
|
nsImageFrame::SizeOf(nsISizeOfHandler* aHandler, PRUint32* aResult) const
|
|
{
|
|
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;
|
|
return NS_OK;
|
|
}
|
|
#endif
|