456 lines
15 KiB
C++
456 lines
15 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 Communicator client code.
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*
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* The Initial Developer of the Original Code is Netscape Communications
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* 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 "nsCOMPtr.h"
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#include "nsIDOMHTMLFontElement.h"
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#include "nsIScriptObjectOwner.h"
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#include "nsIDOMEventReceiver.h"
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#include "nsIHTMLContent.h"
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#include "nsGenericHTMLElement.h"
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#include "nsHTMLAtoms.h"
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#include "nsHTMLIIDs.h"
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#include "nsIDeviceContext.h"
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#include "nsIStyleContext.h"
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#include "nsIMutableStyleContext.h"
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#include "nsStyleConsts.h"
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#include "nsStyleUtil.h"
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#include "nsIPresContext.h"
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#include "nsIHTMLAttributes.h"
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// MJA: bug 31816
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#include "nsIPresShell.h"
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#include "nsIDocShellTreeItem.h"
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// - END MJA
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class nsHTMLFontElement : public nsGenericHTMLContainerElement,
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public nsIDOMHTMLFontElement
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{
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public:
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nsHTMLFontElement();
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virtual ~nsHTMLFontElement();
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// nsISupports
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NS_DECL_ISUPPORTS_INHERITED
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// nsIDOMNode
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NS_FORWARD_IDOMNODE_NO_CLONENODE(nsGenericHTMLContainerElement::)
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// nsIDOMElement
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NS_FORWARD_IDOMELEMENT(nsGenericHTMLContainerElement::)
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// nsIDOMHTMLElement
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NS_FORWARD_IDOMHTMLELEMENT(nsGenericHTMLContainerElement::)
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// nsIDOMHTMLFontElement
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NS_DECL_IDOMHTMLFONTELEMENT
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NS_IMETHOD StringToAttribute(nsIAtom* aAttribute,
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const nsAReadableString& aValue,
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nsHTMLValue& aResult);
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NS_IMETHOD AttributeToString(nsIAtom* aAttribute,
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const nsHTMLValue& aValue,
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nsAWritableString& aResult) const;
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NS_IMETHOD GetMappedAttributeImpact(const nsIAtom* aAttribute,
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PRInt32& aHint) const;
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NS_IMETHOD GetAttributeMappingFunctions(nsMapAttributesFunc& aFontMapFunc,
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nsMapAttributesFunc& aMapFunc) const;
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NS_IMETHOD SizeOf(nsISizeOfHandler* aSizer, PRUint32* aResult) const;
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};
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nsresult
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NS_NewHTMLFontElement(nsIHTMLContent** aInstancePtrResult,
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nsINodeInfo *aNodeInfo)
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{
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NS_ENSURE_ARG_POINTER(aInstancePtrResult);
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nsHTMLFontElement* it = new nsHTMLFontElement();
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if (!it) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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nsresult rv = it->Init(aNodeInfo);
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if (NS_FAILED(rv)) {
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delete it;
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return rv;
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}
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*aInstancePtrResult = NS_STATIC_CAST(nsIHTMLContent *, it);
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NS_ADDREF(*aInstancePtrResult);
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return NS_OK;
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}
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nsHTMLFontElement::nsHTMLFontElement()
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{
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}
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nsHTMLFontElement::~nsHTMLFontElement()
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{
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}
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NS_IMPL_ADDREF_INHERITED(nsHTMLFontElement, nsGenericElement);
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NS_IMPL_RELEASE_INHERITED(nsHTMLFontElement, nsGenericElement);
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NS_IMPL_HTMLCONTENT_QI(nsHTMLFontElement, nsGenericHTMLContainerElement,
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nsIDOMHTMLFontElement);
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nsresult
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nsHTMLFontElement::CloneNode(PRBool aDeep, nsIDOMNode** aReturn)
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{
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NS_ENSURE_ARG_POINTER(aReturn);
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*aReturn = nsnull;
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nsHTMLFontElement* it = new nsHTMLFontElement();
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if (!it) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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nsCOMPtr<nsIDOMNode> kungFuDeathGrip(it);
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nsresult rv = it->Init(mNodeInfo);
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if (NS_FAILED(rv))
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return rv;
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CopyInnerTo(this, it, aDeep);
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*aReturn = NS_STATIC_CAST(nsIDOMNode *, it);
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NS_ADDREF(*aReturn);
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return NS_OK;
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}
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NS_IMPL_STRING_ATTR(nsHTMLFontElement, Color, color)
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NS_IMPL_STRING_ATTR(nsHTMLFontElement, Face, face)
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NS_IMPL_STRING_ATTR(nsHTMLFontElement, Size, size)
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NS_IMETHODIMP
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nsHTMLFontElement::StringToAttribute(nsIAtom* aAttribute,
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const nsAReadableString& aValue,
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nsHTMLValue& aResult)
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{
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if ((aAttribute == nsHTMLAtoms::size) ||
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(aAttribute == nsHTMLAtoms::pointSize) ||
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(aAttribute == nsHTMLAtoms::fontWeight)) {
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nsAutoString tmp(aValue);
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//rickg: fixed flaw where ToInteger error code was not being checked.
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// This caused wrong default value for font size.
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PRInt32 ec, v = tmp.ToInteger(&ec);
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if(NS_SUCCEEDED(ec)){
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tmp.CompressWhitespace(PR_TRUE, PR_FALSE);
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PRUnichar ch = tmp.IsEmpty() ? 0 : tmp.First();
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aResult.SetIntValue(v, ((ch == '+') || (ch == '-')) ?
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eHTMLUnit_Integer : eHTMLUnit_Enumerated);
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return NS_CONTENT_ATTR_HAS_VALUE;
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}
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}
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else if (aAttribute == nsHTMLAtoms::color) {
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if (ParseColor(aValue, mDocument, aResult)) {
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return NS_CONTENT_ATTR_HAS_VALUE;
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}
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}
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return NS_CONTENT_ATTR_NOT_THERE;
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}
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NS_IMETHODIMP
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nsHTMLFontElement::AttributeToString(nsIAtom* aAttribute,
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const nsHTMLValue& aValue,
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nsAWritableString& aResult) const
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{
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if ((aAttribute == nsHTMLAtoms::size) ||
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(aAttribute == nsHTMLAtoms::pointSize) ||
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(aAttribute == nsHTMLAtoms::fontWeight)) {
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aResult.Truncate();
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nsAutoString intVal;
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if (aValue.GetUnit() == eHTMLUnit_Enumerated) {
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intVal.AppendInt(aValue.GetIntValue(), 10);
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aResult.Append(intVal);
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return NS_CONTENT_ATTR_HAS_VALUE;
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}
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else if (aValue.GetUnit() == eHTMLUnit_Integer) {
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PRInt32 value = aValue.GetIntValue();
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if (value >= 0) {
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aResult.Append(NS_LITERAL_STRING("+"));
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}
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intVal.AppendInt(value, 10);
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aResult.Append(intVal);
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return NS_CONTENT_ATTR_HAS_VALUE;
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}
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return NS_CONTENT_ATTR_NOT_THERE;
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}
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return nsGenericHTMLContainerElement::AttributeToString(aAttribute, aValue,
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aResult);
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}
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static void
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MapFontAttributesInto(const nsIHTMLMappedAttributes* aAttributes,
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nsIMutableStyleContext* aContext,
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nsIPresContext* aPresContext)
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{
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if (nsnull != aAttributes) {
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nsHTMLValue value;
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nsStyleFont* font = (nsStyleFont*)
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aContext->GetMutableStyleData(eStyleStruct_Font);
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const nsStyleFont* parentFont = font;
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nsIStyleContext* parentContext = aContext->GetParent();
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if (nsnull != parentContext) {
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parentFont = (const nsStyleFont*)
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parentContext->GetStyleData(eStyleStruct_Font);
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}
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const nsFont& defaultFont = aPresContext->GetDefaultFontDeprecated();
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const nsFont& defaultFixedFont = aPresContext->GetDefaultFixedFontDeprecated();
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// face: string list
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aAttributes->GetAttribute(nsHTMLAtoms::face, value);
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if (value.GetUnit() == eHTMLUnit_String) {
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nsCOMPtr<nsIDeviceContext> dc;
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aPresContext->GetDeviceContext(getter_AddRefs(dc));
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if (dc) {
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nsAutoString familyList;
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value.GetStringValue(familyList);
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font->mFont.name = familyList;
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nsAutoString face;
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// MJA: bug 31816 if we are not using document fonts, but this
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// is a xul document, then we set the chromeOverride bit so we
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// use the document fonts anyway
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PRBool chromeOverride = PR_FALSE;
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PRBool useDocumentFonts = PR_TRUE;
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aPresContext->GetCachedBoolPref(kPresContext_UseDocumentFonts,
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useDocumentFonts);
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if (!useDocumentFonts) {
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// check if the prefs have been disabled for this shell
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// - if prefs are disabled then we use the document fonts
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// anyway (yet another override)
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PRBool prefsEnabled = PR_TRUE;
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nsCOMPtr<nsIPresShell> shell;
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aPresContext->GetShell(getter_AddRefs(shell));
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if (shell) {
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shell->ArePrefStyleRulesEnabled(prefsEnabled);
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}
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if (!prefsEnabled) {
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useDocumentFonts = PR_TRUE;
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} else {
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// see if we are in the chrome, if so, use the document fonts (override the useDocFonts setting)
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nsresult result = NS_OK;
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nsCOMPtr<nsISupports> container;
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result = aPresContext->GetContainer(getter_AddRefs(container));
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if (NS_SUCCEEDED(result) && container) {
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nsCOMPtr<nsIDocShellTreeItem> docShell(do_QueryInterface(container, &result));
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if (NS_SUCCEEDED(result) && docShell){
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PRInt32 docShellType;
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result = docShell->GetItemType(&docShellType);
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if (NS_SUCCEEDED(result)){
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if (nsIDocShellTreeItem::typeChrome == docShellType){
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chromeOverride = PR_TRUE;
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}
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}
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}
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}
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}
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}
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// find the correct font if we are usingDocumentFonts OR we
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// are overriding for XUL
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// MJA: bug 31816
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PRBool fontFaceOK = PR_TRUE;
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PRBool isMozFixed = font->mFont.name.EqualsIgnoreCase("-moz-fixed");
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if ((chromeOverride || useDocumentFonts)) {
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fontFaceOK = (NS_OK == dc->FirstExistingFont(font->mFont, face));
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}
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if (!fontFaceOK || !(chromeOverride || useDocumentFonts)) {
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// now set to defaults
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font->mFont.name = defaultFont.name;
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font->mFixedFont.name= defaultFixedFont.name;
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}
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// set to monospace if using moz-fixed
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if (isMozFixed) {
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font->mFlags |= NS_STYLE_FONT_USE_FIXED;
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} else {
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font->mFlags &= ~NS_STYLE_FONT_USE_FIXED;
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}
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font->mFlags |= NS_STYLE_FONT_FACE_EXPLICIT;
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}
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}
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// pointSize: int, enum
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aAttributes->GetAttribute(nsHTMLAtoms::pointSize, value);
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if (value.GetUnit() == eHTMLUnit_Integer) {
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// XXX should probably sanitize value
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font->mFont.size = parentFont->mFont.size +
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NSIntPointsToTwips(value.GetIntValue());
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font->mFixedFont.size = parentFont->mFixedFont.size +
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NSIntPointsToTwips(value.GetIntValue());
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font->mFlags |= NS_STYLE_FONT_SIZE_EXPLICIT;
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}
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else if (value.GetUnit() == eHTMLUnit_Enumerated) {
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font->mFont.size = NSIntPointsToTwips(value.GetIntValue());
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font->mFixedFont.size = NSIntPointsToTwips(value.GetIntValue());
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font->mFlags |= NS_STYLE_FONT_SIZE_EXPLICIT;
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}
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else {
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// size: int, enum , NOTE: this does not count as an explicit size
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// also this has no effect if font is already explicit (quirk mode)
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//
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// NOTE: we now do not emulate this quirk - it is too stupid, IE does it right, and it
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// messes up other blocks (ie. Headings) when implemented... see bug 25810
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#if 0 // removing the quirk...
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nsCompatibility mode;
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aPresContext->GetCompatibilityMode(&mode);
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if ((eCompatibility_Standard == mode) ||
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(0 == (font->mFlags & NS_STYLE_FONT_SIZE_EXPLICIT))) {
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#else
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if (1) {
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#endif
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aAttributes->GetAttribute(nsHTMLAtoms::size, value);
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if ((value.GetUnit() == eHTMLUnit_Integer) ||
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(value.GetUnit() == eHTMLUnit_Enumerated)) {
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PRInt32 size = value.GetIntValue();
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if (size != 0) { // bug 32063: ignore <font size="">
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if (value.GetUnit() == eHTMLUnit_Integer) { // int (+/-)
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size = 3 + size; // XXX should be BASEFONT, not three
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}
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size = ((0 < size) ? ((size < 8) ? size : 7) : 1);
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PRInt32 scaler;
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aPresContext->GetFontScaler(&scaler);
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float scaleFactor = nsStyleUtil::GetScalingFactor(scaler);
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font->mFont.size =
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nsStyleUtil::CalcFontPointSize(size, (PRInt32)defaultFont.size,
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scaleFactor, aPresContext);
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font->mFixedFont.size =
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nsStyleUtil::CalcFontPointSize(size,
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(PRInt32)defaultFixedFont.size,
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scaleFactor, aPresContext);
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}
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}
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}
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}
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// fontWeight: int, enum
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aAttributes->GetAttribute(nsHTMLAtoms::fontWeight, value);
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if (value.GetUnit() == eHTMLUnit_Integer) { // +/-
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PRInt32 intValue = (value.GetIntValue() / 100);
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PRInt32 weight = nsStyleUtil::ConstrainFontWeight(parentFont->mFont.weight +
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(intValue * NS_STYLE_FONT_WEIGHT_BOLDER));
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font->mFont.weight = weight;
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font->mFixedFont.weight = weight;
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}
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else if (value.GetUnit() == eHTMLUnit_Enumerated) {
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PRInt32 weight = value.GetIntValue();
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weight = nsStyleUtil::ConstrainFontWeight((weight / 100) * 100);
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font->mFont.weight = weight;
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font->mFixedFont.weight = weight;
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}
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NS_IF_RELEASE(parentContext);
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}
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}
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static void
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MapAttributesInto(const nsIHTMLMappedAttributes* aAttributes,
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nsIMutableStyleContext* aContext,
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nsIPresContext* aPresContext)
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{
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if (nsnull != aAttributes) {
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nsHTMLValue value;
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// color: color
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if (NS_CONTENT_ATTR_NOT_THERE !=
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aAttributes->GetAttribute(nsHTMLAtoms::color, value)) {
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const nsStyleFont* font = (const nsStyleFont*)
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aContext->GetStyleData(eStyleStruct_Font);
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nsStyleColor* color = (nsStyleColor*)
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aContext->GetMutableStyleData(eStyleStruct_Color);
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nsStyleText* text = (nsStyleText*)
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aContext->GetMutableStyleData(eStyleStruct_Text);
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if (((eHTMLUnit_Color == value.GetUnit())) ||
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(eHTMLUnit_ColorName == value.GetUnit())) {
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color->mColor = value.GetColorValue();
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// re-apply inherited text decoration, so colors sync
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text->mTextDecoration = font->mFont.decorations;
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}
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}
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}
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nsGenericHTMLElement::MapCommonAttributesInto(aAttributes, aContext,
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aPresContext);
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}
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NS_IMETHODIMP
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nsHTMLFontElement::GetMappedAttributeImpact(const nsIAtom* aAttribute,
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PRInt32& aHint) const
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{
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if (aAttribute == nsHTMLAtoms::color) {
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aHint = NS_STYLE_HINT_VISUAL;
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}
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else if ((aAttribute == nsHTMLAtoms::face) ||
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(aAttribute == nsHTMLAtoms::pointSize) ||
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(aAttribute == nsHTMLAtoms::size) ||
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(aAttribute == nsHTMLAtoms::fontWeight)) {
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aHint = NS_STYLE_HINT_REFLOW;
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}
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else if (!GetCommonMappedAttributesImpact(aAttribute, aHint)) {
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aHint = NS_STYLE_HINT_CONTENT;
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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nsHTMLFontElement::GetAttributeMappingFunctions(nsMapAttributesFunc& aFontMapFunc,
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nsMapAttributesFunc& aMapFunc) const
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{
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aFontMapFunc = &MapFontAttributesInto;
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aMapFunc = &MapAttributesInto;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsHTMLFontElement::SizeOf(nsISizeOfHandler* aSizer, PRUint32* aResult) const
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{
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*aResult = sizeof(*this) + BaseSizeOf(aSizer);
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return NS_OK;
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}
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