зеркало из https://github.com/mozilla/gecko-dev.git
[not part of default build] Removed debug flag that shouldn't have been left, and corrected some invariants
This commit is contained in:
rbs%maths.uq.edu.au
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6221acb135
Коммит
578283cd0f
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Загрузить разницу
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@ -0,0 +1,472 @@
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/*
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* The contents of this file are subject to the Mozilla 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/MPL/
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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 MathML Project.
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*
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* The Initial Developer of the Original Code is The University Of
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* Queensland. Portions created by The University Of Queensland are
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* Copyright (C) 1999 The University Of Queensland. All Rights Reserved.
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*
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* Contributor(s):
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* Roger B. Sidje <rbs@maths.uq.edu.au>
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*/
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#include "nsCOMPtr.h"
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#include "nsHTMLParts.h"
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#include "nsIHTMLContent.h"
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#include "nsFrame.h"
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#include "nsLineLayout.h"
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#include "nsHTMLIIDs.h"
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#include "nsIPresContext.h"
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#include "nsHTMLAtoms.h"
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#include "nsUnitConversion.h"
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#include "nsIStyleContext.h"
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#include "nsStyleConsts.h"
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#include "nsINameSpaceManager.h"
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#include "nsIRenderingContext.h"
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#include "nsIFontMetrics.h"
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#include "nsStyleUtil.h"
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#include "nsCSSRendering.h"
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#include "prprf.h" // For PR_snprintf()
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#include "nsIWebShell.h"
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#include "nsIDocShellTreeItem.h"
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#include "nsIDocShellTreeOwner.h"
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#include "nsIWebBrowserChrome.h"
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#include "nsIInterfaceRequestor.h"
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#include "nsIDOMElement.h"
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#include "nsIDOMEventReceiver.h"
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#include "nsIDOMMouseListener.h"
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#include "nsMathMLmactionFrame.h"
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//
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// <maction> -- bind actions to a subexpression - implementation
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//
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#define NS_MATHML_ACTION_TYPE_NONE 0
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#define NS_MATHML_ACTION_TYPE_TOGGLE 1
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#define NS_MATHML_ACTION_TYPE_STATUSLINE 2
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#define NS_MATHML_ACTION_TYPE_TOOLTIP 3 // unsupported
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#define NS_MATHML_ACTION_TYPE_RESTYLE 4
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NS_INTERFACE_MAP_BEGIN(nsMathMLmactionFrame)
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NS_INTERFACE_MAP_ENTRY(nsIDOMMouseListener)
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NS_INTERFACE_MAP_END_INHERITING(nsMathMLContainerFrame)
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NS_IMETHODIMP_(nsrefcnt)
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nsMathMLmactionFrame::AddRef(void)
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{
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return NS_OK;
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}
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NS_IMETHODIMP_(nsrefcnt)
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nsMathMLmactionFrame::Release(void)
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{
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return NS_OK;
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}
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nsresult
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NS_NewMathMLmactionFrame(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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nsMathMLmactionFrame* it = new (aPresShell) nsMathMLmactionFrame;
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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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nsMathMLmactionFrame::nsMathMLmactionFrame()
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{
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}
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nsMathMLmactionFrame::~nsMathMLmactionFrame()
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{
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// unregister us as a mouse event listener ...
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// printf("maction:%p unregistering as mouse event listener ...\n", this);
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nsCOMPtr<nsIDOMEventReceiver> receiver(do_QueryInterface(mContent));
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receiver->RemoveEventListenerByIID(this, NS_GET_IID(nsIDOMMouseListener));
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}
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NS_IMETHODIMP
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nsMathMLmactionFrame::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;
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nsAutoString value, prefix;
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// Init our local attributes
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mPresContext = aPresContext;
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mChildCount = -1; // these will be updated in GetSelectedFrame()
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mSelection = 0;
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mSelectedFrame = nsnull;
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mActionType = NS_MATHML_ACTION_TYPE_NONE;
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if (NS_CONTENT_ATTR_HAS_VALUE == aContent->GetAttribute(kNameSpaceID_None,
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nsMathMLAtoms::actiontype_, value)) {
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if (value.EqualsWithConversion("toggle"))
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mActionType = NS_MATHML_ACTION_TYPE_TOGGLE;
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// XXX use goto to jump out of these if?
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if (NS_MATHML_ACTION_TYPE_NONE == mActionType) {
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// expected tooltip prefix (8ch)...
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prefix.AssignWithConversion("tooltip#");
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if (8 < value.Length() && 0 == value.Find(prefix))
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mActionType = NS_MATHML_ACTION_TYPE_TOOLTIP;
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}
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if (NS_MATHML_ACTION_TYPE_NONE == mActionType) {
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// expected statusline prefix (11ch)...
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prefix.AssignWithConversion("statusline#");
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if (11 < value.Length() && 0 == value.Find(prefix))
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mActionType = NS_MATHML_ACTION_TYPE_STATUSLINE;
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}
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if (NS_MATHML_ACTION_TYPE_NONE == mActionType) {
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// expected restyle prefix (8ch)...
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prefix.AssignWithConversion("restyle#");
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if (8 < value.Length() && 0 == value.Find(prefix)) {
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mActionType = NS_MATHML_ACTION_TYPE_RESTYLE;
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mRestyle = value;
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// Here is the situation:
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// When the attribute [actiontype="restyle#id"] is set, the Style System has
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// given us the associated style. But we want to start with our default style.
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// So... first, remove the attribute actiontype="restyle#id"
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value.SetLength(0);
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PRBool notify = PR_FALSE; // don't trigger a reflow yet!
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aContent->SetAttribute(kNameSpaceID_None, nsMathMLAtoms::actiontype_, value, notify);
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// then, re-resolve our style
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nsCOMPtr<nsIStyleContext> parentStyleContext;
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aParent->GetStyleContext(getter_AddRefs(parentStyleContext));
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nsIStyleContext* newStyleContext;
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aPresContext->ResolveStyleContextFor(aContent, parentStyleContext,
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PR_FALSE, &newStyleContext);
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if (!newStyleContext)
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mRestyle.Truncate();
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else {
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if (newStyleContext != aContext)
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aContext = newStyleContext;
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else {
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NS_RELEASE(newStyleContext);
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mRestyle.Truncate();
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}
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}
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}
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}
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}
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// Let the base class do the rest
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rv = nsMathMLContainerFrame::Init(aPresContext, aContent, aParent, aContext, aPrevInFlow);
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#if defined(NS_DEBUG) && defined(SHOW_BOUNDING_BOX)
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mPresentationData.flags |= NS_MATHML_SHOW_BOUNDING_METRICS;
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#endif
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return rv;
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}
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// return the frame whose number is given by the attribute selection="number"
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nsIFrame*
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nsMathMLmactionFrame::GetSelectedFrame()
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{
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nsresult rv = NS_OK;
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nsAutoString value;
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PRInt32 selection;
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if (NS_CONTENT_ATTR_HAS_VALUE == mContent->GetAttribute(kNameSpaceID_None,
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nsMathMLAtoms::selection_, value)) {
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PRInt32 errorCode;
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selection = value.ToInteger(&errorCode);
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if (NS_FAILED(errorCode))
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selection = 1;
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}
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else selection = 1; // default is first frame
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if (-1 != mChildCount) { // we have been in this function before...
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// cater for invalid user-supplied selection
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if (selection > mChildCount || selection < 1)
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selection = 1;
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// quick return if it is identical with our cache
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if (selection == mSelection)
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return mSelectedFrame;
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}
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// get the selected child and cache new values...
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PRInt32 count = 0;
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nsIFrame* childFrame = mFrames.FirstChild();
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while (childFrame) {
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if (!IsOnlyWhitespace(childFrame)) {
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if (!mSelectedFrame)
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mSelectedFrame = childFrame; // default is first child
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if (++count == selection)
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mSelectedFrame = childFrame;
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}
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childFrame->GetNextSibling(&childFrame);
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}
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// cater for invalid user-supplied selection
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if (selection > count || selection < 1)
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selection = 1;
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mChildCount = count;
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mSelection = selection;
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// if the selected child is an embellished operator,
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// we become embellished as well
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mEmbellishData.flags &= ~NS_MATHML_EMBELLISH_OPERATOR;
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mEmbellishData.firstChild = nsnull;
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mEmbellishData.core = nsnull;
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mEmbellishData.direction = NS_STRETCH_DIRECTION_UNSUPPORTED;
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if (mSelectedFrame) {
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nsIMathMLFrame* aMathMLFrame = nsnull;
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rv = mSelectedFrame->QueryInterface(NS_GET_IID(nsIMathMLFrame), (void**)&aMathMLFrame);
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if (NS_SUCCEEDED(rv) && aMathMLFrame) {
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nsEmbellishData embellishData;
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aMathMLFrame->GetEmbellishData(embellishData);
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if (NS_MATHML_IS_EMBELLISH_OPERATOR(embellishData.flags) && embellishData.firstChild) {
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mEmbellishData.flags |= NS_MATHML_EMBELLISH_OPERATOR;
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mEmbellishData.firstChild = mSelectedFrame; // yes!
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mEmbellishData.core = embellishData.core;
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mEmbellishData.direction = embellishData.direction;
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}
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}
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}
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return mSelectedFrame;
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}
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NS_IMETHODIMP
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nsMathMLmactionFrame::SetInitialChildList(nsIPresContext* aPresContext,
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nsIAtom* aListName,
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nsIFrame* aChildList)
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{
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nsresult rv = nsMathMLContainerFrame::SetInitialChildList(aPresContext, aListName, aChildList);
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// This very first call to GetSelectedFrame() will cause us to be marked as an
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// embellished operator if the selected child is an embellished operator,
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GetSelectedFrame();
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// register us as a mouse event listener ...
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// printf("maction:%p registering as mouse event listener ...\n", this);
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nsCOMPtr<nsIDOMEventReceiver> receiver(do_QueryInterface(mContent));
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receiver->AddEventListenerByIID(this, NS_GET_IID(nsIDOMMouseListener));
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return rv;
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}
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// Return the selected frame ...
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NS_IMETHODIMP
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nsMathMLmactionFrame::GetFrameForPoint(nsIPresContext* aPresContext,
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const nsPoint& aPoint,
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nsFramePaintLayer aWhichLayer,
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nsIFrame** aFrame)
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{
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nsIFrame* childFrame = GetSelectedFrame();
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if (childFrame) {
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nsPoint pt;
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pt.MoveTo(aPoint.x - mRect.x, aPoint.y - mRect.y);
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return childFrame->GetFrameForPoint(aPresContext, pt, aWhichLayer, aFrame);
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}
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else
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return nsFrame::GetFrameForPoint(aPresContext, aPoint, aWhichLayer, aFrame);
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}
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// Only paint the selected child...
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NS_IMETHODIMP
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nsMathMLmactionFrame::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 =
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(const nsStyleDisplay*)mStyleContext->GetStyleData(eStyleStruct_Display);
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if (NS_FRAME_PAINT_LAYER_BACKGROUND == aWhichLayer) {
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if (disp->IsVisible() && mRect.width && mRect.height) {
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// Paint our background and border
|
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PRIntn skipSides = GetSkipSides();
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const nsStyleColor* color = (const nsStyleColor*)
|
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mStyleContext->GetStyleData(eStyleStruct_Color);
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const nsStyleSpacing* spacing = (const nsStyleSpacing*)
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mStyleContext->GetStyleData(eStyleStruct_Spacing);
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nsRect rect(0, 0, mRect.width, mRect.height);
|
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nsCSSRendering::PaintBackground(aPresContext, aRenderingContext, this,
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aDirtyRect, rect, *color, *spacing, 0, 0);
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nsCSSRendering::PaintBorder(aPresContext, aRenderingContext, this,
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aDirtyRect, rect, *spacing, mStyleContext, skipSides);
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nsCSSRendering::PaintOutline(aPresContext, aRenderingContext, this,
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aDirtyRect, rect, *spacing, mStyleContext, 0);
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}
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}
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nsIFrame* childFrame = GetSelectedFrame();
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if (childFrame)
|
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PaintChild(aPresContext, aRenderingContext, aDirtyRect, childFrame, aWhichLayer);
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#if defined(NS_DEBUG) && defined(SHOW_BOUNDING_BOX)
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// visual debug
|
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if (NS_FRAME_PAINT_LAYER_FOREGROUND == aWhichLayer &&
|
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NS_MATHML_PAINT_BOUNDING_METRICS(mPresentationData.flags))
|
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{
|
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aRenderingContext.SetColor(NS_RGB(0,0,255));
|
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|
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nscoord x = mReference.x + mBoundingMetrics.leftBearing;
|
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nscoord y = mReference.y - mBoundingMetrics.ascent;
|
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nscoord w = mBoundingMetrics.rightBearing - mBoundingMetrics.leftBearing;
|
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nscoord h = mBoundingMetrics.ascent + mBoundingMetrics.descent;
|
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|
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aRenderingContext.DrawRect(x,y,w,h);
|
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}
|
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#endif
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return NS_OK;
|
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}
|
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|
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// Only place the selected child ...
|
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NS_IMETHODIMP
|
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nsMathMLmactionFrame::Place(nsIPresContext* aPresContext,
|
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nsIRenderingContext& aRenderingContext,
|
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PRBool aPlaceOrigin,
|
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nsHTMLReflowMetrics& aDesiredSize)
|
||||
{
|
||||
aDesiredSize.width = aDesiredSize.height = 0;
|
||||
aDesiredSize.ascent = aDesiredSize.descent = 0;
|
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mBoundingMetrics.Clear();
|
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nsIFrame* childFrame = GetSelectedFrame();
|
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if (childFrame) {
|
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GetReflowAndBoundingMetricsFor(childFrame, aDesiredSize, mBoundingMetrics);
|
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if (aPlaceOrigin) {
|
||||
FinishReflowChild(childFrame, aPresContext, aDesiredSize, 0, 0, 0);
|
||||
}
|
||||
mReference.x = 0;
|
||||
mReference.y = aDesiredSize.ascent;
|
||||
}
|
||||
aDesiredSize.mBoundingMetrics = mBoundingMetrics;
|
||||
return NS_OK;
|
||||
}
|
||||
|
||||
// ################################################################
|
||||
// Event handlers
|
||||
// ################################################################
|
||||
|
||||
// helper to show a msg on the status bar
|
||||
// curled from nsObjectFrame.cpp ...
|
||||
nsresult
|
||||
nsMathMLmactionFrame::ShowStatus(nsIPresContext* aPresContext,
|
||||
nsString& aStatusMsg)
|
||||
{
|
||||
nsCOMPtr<nsISupports> cont;
|
||||
nsresult rv = aPresContext->GetContainer(getter_AddRefs(cont));
|
||||
if (NS_SUCCEEDED(rv) && cont) {
|
||||
nsCOMPtr<nsIDocShellTreeItem> docShellItem(do_QueryInterface(cont));
|
||||
if (docShellItem) {
|
||||
|
||||
nsCOMPtr<nsIDocShellTreeOwner> treeOwner;
|
||||
docShellItem->GetTreeOwner(getter_AddRefs(treeOwner));
|
||||
|
||||
if(treeOwner)
|
||||
{
|
||||
nsCOMPtr<nsIWebBrowserChrome> browserChrome(do_GetInterface(treeOwner));
|
||||
|
||||
if(browserChrome)
|
||||
browserChrome->SetStatus(nsIWebBrowserChrome::STATUS_SCRIPT, aStatusMsg.GetUnicode());
|
||||
}
|
||||
}
|
||||
}
|
||||
return rv;
|
||||
}
|
||||
|
||||
nsresult
|
||||
nsMathMLmactionFrame::MouseOver(nsIDOMEvent* aMouseEvent)
|
||||
{
|
||||
// see if we should display a status message
|
||||
if (NS_MATHML_ACTION_TYPE_STATUSLINE == mActionType)
|
||||
{
|
||||
nsAutoString value;
|
||||
if (NS_CONTENT_ATTR_HAS_VALUE == mContent->GetAttribute(kNameSpaceID_None,
|
||||
nsMathMLAtoms::actiontype_, value))
|
||||
{
|
||||
// expected statusline prefix (11ch)...
|
||||
nsAutoString statusline;
|
||||
statusline.AssignWithConversion("statusline#");
|
||||
if (11 < value.Length() && 0 == value.Find(statusline)) {
|
||||
value.Cut(0, 11);
|
||||
ShowStatus(mPresContext, value);
|
||||
}
|
||||
}
|
||||
}
|
||||
return NS_OK;
|
||||
}
|
||||
|
||||
nsresult
|
||||
nsMathMLmactionFrame::MouseOut(nsIDOMEvent* aMouseEvent)
|
||||
{
|
||||
// see if we should remove the status message
|
||||
if (NS_MATHML_ACTION_TYPE_STATUSLINE == mActionType)
|
||||
{
|
||||
nsAutoString value;
|
||||
value.SetLength(0);
|
||||
ShowStatus(mPresContext, value);
|
||||
}
|
||||
return NS_OK;
|
||||
}
|
||||
|
||||
nsresult
|
||||
nsMathMLmactionFrame::MouseClick(nsIDOMEvent* aMouseEvent)
|
||||
{
|
||||
nsAutoString value;
|
||||
if (NS_MATHML_ACTION_TYPE_TOGGLE == mActionType)
|
||||
{
|
||||
if (mChildCount > 1) {
|
||||
PRInt32 selection = (mSelection == mChildCount)? 1 : mSelection + 1;
|
||||
char cbuf[10];
|
||||
PR_snprintf(cbuf, sizeof(cbuf), "%d", selection);
|
||||
value.AssignWithConversion(cbuf);
|
||||
PRBool notify = PR_FALSE; // don't yet notify the document
|
||||
mContent->SetAttribute(kNameSpaceID_None, nsMathMLAtoms::selection_, value, notify);
|
||||
|
||||
// Now trigger a content-changed reflow...
|
||||
// ContentChanged(mPresContext, mContent, nsnull);
|
||||
|
||||
nsCOMPtr<nsIPresShell> presShell;
|
||||
mPresContext->GetShell(getter_AddRefs(presShell));
|
||||
ReflowDirtyChild(presShell, mSelectedFrame);
|
||||
}
|
||||
}
|
||||
else if (NS_MATHML_ACTION_TYPE_RESTYLE == mActionType)
|
||||
{
|
||||
if (0 < mRestyle.Length()) {
|
||||
nsCOMPtr<nsIDOMElement> node( do_QueryInterface(mContent) );
|
||||
if (node.get()) {
|
||||
if (NS_CONTENT_ATTR_HAS_VALUE == mContent->GetAttribute(kNameSpaceID_None,
|
||||
nsMathMLAtoms::actiontype_, value))
|
||||
node->RemoveAttribute(NS_ConvertASCIItoUCS2("actiontype"));
|
||||
else
|
||||
node->SetAttribute(NS_ConvertASCIItoUCS2("actiontype"), mRestyle);
|
||||
}
|
||||
}
|
||||
}
|
||||
return NS_OK;
|
||||
}
|
||||
Загрузка…
Ссылка в новой задаче