mirror of
https://github.com/mozilla/gecko-dev.git
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0df895545b
MozReview-Commit-ID: PVslOIt1ls --HG-- extra : rebase_source : 9f77e4cc7cc32fd977c54587120edeb9e8cb3136
475 lines
14 KiB
C++
475 lines
14 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/* a Gecko @font-face rule */
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#include "nsCSSFontFaceRule.h"
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#include "mozilla/dom/CSSFontFaceRuleBinding.h"
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#include "mozilla/dom/CSSStyleDeclarationBinding.h"
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using namespace mozilla;
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using namespace mozilla::dom;
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// -------------------------------------------
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// nsCSSFontFaceStyleDecl and related routines
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//
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// Mapping from nsCSSFontDesc codes to CSSFontFaceDescriptors fields.
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nsCSSValue CSSFontFaceDescriptors::* const
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CSSFontFaceDescriptors::Fields[] = {
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#define CSS_FONT_DESC(name_, method_) &CSSFontFaceDescriptors::m##method_,
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#include "nsCSSFontDescList.h"
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#undef CSS_FONT_DESC
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};
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const nsCSSValue&
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CSSFontFaceDescriptors::Get(nsCSSFontDesc aFontDescID) const
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{
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MOZ_ASSERT(aFontDescID > eCSSFontDesc_UNKNOWN &&
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aFontDescID < eCSSFontDesc_COUNT);
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return this->*CSSFontFaceDescriptors::Fields[aFontDescID];
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}
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nsCSSValue&
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CSSFontFaceDescriptors::Get(nsCSSFontDesc aFontDescID)
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{
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MOZ_ASSERT(aFontDescID > eCSSFontDesc_UNKNOWN &&
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aFontDescID < eCSSFontDesc_COUNT);
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return this->*CSSFontFaceDescriptors::Fields[aFontDescID];
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}
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// QueryInterface implementation for nsCSSFontFaceStyleDecl
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NS_INTERFACE_MAP_BEGIN(nsCSSFontFaceStyleDecl)
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NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
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NS_INTERFACE_MAP_ENTRY(nsIDOMCSSStyleDeclaration)
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NS_INTERFACE_MAP_ENTRY(nsICSSDeclaration)
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NS_INTERFACE_MAP_ENTRY(nsISupports)
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// We forward the cycle collection interfaces to ContainingRule(), which is
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// never null (in fact, we're part of that object!)
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if (aIID.Equals(NS_GET_IID(nsCycleCollectionISupports)) ||
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aIID.Equals(NS_GET_IID(nsXPCOMCycleCollectionParticipant))) {
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return ContainingRule()->QueryInterface(aIID, aInstancePtr);
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}
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else
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NS_INTERFACE_MAP_END
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NS_IMPL_ADDREF_USING_AGGREGATOR(nsCSSFontFaceStyleDecl, ContainingRule())
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NS_IMPL_RELEASE_USING_AGGREGATOR(nsCSSFontFaceStyleDecl, ContainingRule())
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// helper for string GetPropertyValue and RemovePropertyValue
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nsresult
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nsCSSFontFaceStyleDecl::GetPropertyValue(nsCSSFontDesc aFontDescID,
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nsAString & aResult) const
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{
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NS_ENSURE_ARG_RANGE(aFontDescID, eCSSFontDesc_UNKNOWN,
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eCSSFontDesc_COUNT - 1);
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aResult.Truncate();
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if (aFontDescID == eCSSFontDesc_UNKNOWN)
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return NS_OK;
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const nsCSSValue& val = mDescriptors.Get(aFontDescID);
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if (val.GetUnit() == eCSSUnit_Null) {
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// Avoid having to check no-value in the Family and Src cases below.
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return NS_OK;
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}
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switch (aFontDescID) {
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case eCSSFontDesc_Family: {
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// we don't use nsCSSValue::AppendToString here because it doesn't
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// canonicalize the way we want, and anyway it's overkill when
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// we know we have eCSSUnit_String
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NS_ASSERTION(val.GetUnit() == eCSSUnit_String, "unexpected unit");
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nsDependentString family(val.GetStringBufferValue());
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nsStyleUtil::AppendEscapedCSSString(family, aResult);
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return NS_OK;
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}
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case eCSSFontDesc_Style:
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val.AppendToString(eCSSProperty_font_style, aResult);
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return NS_OK;
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case eCSSFontDesc_Weight:
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val.AppendToString(eCSSProperty_font_weight, aResult);
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return NS_OK;
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case eCSSFontDesc_Stretch:
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val.AppendToString(eCSSProperty_font_stretch, aResult);
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return NS_OK;
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case eCSSFontDesc_FontFeatureSettings:
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nsStyleUtil::AppendFontFeatureSettings(val, aResult);
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return NS_OK;
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case eCSSFontDesc_FontLanguageOverride:
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val.AppendToString(eCSSProperty_font_language_override, aResult);
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return NS_OK;
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case eCSSFontDesc_Display:
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NS_ASSERTION(val.GetUnit() == eCSSUnit_Enumerated,
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"unknown unit for font-display descriptor");
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AppendASCIItoUTF16(nsCSSProps::ValueToKeyword(val.GetIntValue(),
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nsCSSProps::kFontDisplayKTable), aResult);
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return NS_OK;
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case eCSSFontDesc_Src:
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nsStyleUtil::AppendSerializedFontSrc(val, aResult);
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return NS_OK;
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case eCSSFontDesc_UnicodeRange:
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nsStyleUtil::AppendUnicodeRange(val, aResult);
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return NS_OK;
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case eCSSFontDesc_UNKNOWN:
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case eCSSFontDesc_COUNT:
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;
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}
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NS_NOTREACHED("nsCSSFontFaceStyleDecl::GetPropertyValue: "
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"out-of-range value got to the switch");
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return NS_ERROR_INVALID_ARG;
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}
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NS_IMETHODIMP
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nsCSSFontFaceStyleDecl::GetCssText(nsAString & aCssText)
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{
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GetCssTextImpl(aCssText);
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return NS_OK;
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}
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void
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nsCSSFontFaceStyleDecl::GetCssTextImpl(nsAString& aCssText) const
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{
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nsAutoString descStr;
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aCssText.Truncate();
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for (nsCSSFontDesc id = nsCSSFontDesc(eCSSFontDesc_UNKNOWN + 1);
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id < eCSSFontDesc_COUNT;
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id = nsCSSFontDesc(id + 1)) {
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if (mDescriptors.Get(id).GetUnit() != eCSSUnit_Null &&
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NS_SUCCEEDED(GetPropertyValue(id, descStr))) {
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NS_ASSERTION(descStr.Length() > 0,
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"GetCssText: non-null unit, empty property value");
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aCssText.AppendLiteral(" ");
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aCssText.AppendASCII(nsCSSProps::GetStringValue(id).get());
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aCssText.AppendLiteral(": ");
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aCssText.Append(descStr);
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aCssText.AppendLiteral(";\n");
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}
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}
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}
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NS_IMETHODIMP
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nsCSSFontFaceStyleDecl::SetCssText(const nsAString& aCssText,
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nsIPrincipal* aSubjectPrincipal)
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{
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return NS_ERROR_NOT_IMPLEMENTED; // bug 443978
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}
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NS_IMETHODIMP
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nsCSSFontFaceStyleDecl::GetPropertyValue(const nsAString & propertyName,
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nsAString & aResult)
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{
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return GetPropertyValue(nsCSSProps::LookupFontDesc(propertyName), aResult);
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}
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already_AddRefed<dom::CSSValue>
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nsCSSFontFaceStyleDecl::GetPropertyCSSValue(const nsAString & propertyName,
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ErrorResult& aRv)
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{
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// ??? nsDOMCSSDeclaration returns null/NS_OK, but that seems wrong.
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aRv.Throw(NS_ERROR_NOT_IMPLEMENTED);
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return nullptr;
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}
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NS_IMETHODIMP
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nsCSSFontFaceStyleDecl::RemoveProperty(const nsAString & propertyName,
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nsAString & aResult)
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{
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nsCSSFontDesc descID = nsCSSProps::LookupFontDesc(propertyName);
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NS_ASSERTION(descID >= eCSSFontDesc_UNKNOWN &&
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descID < eCSSFontDesc_COUNT,
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"LookupFontDesc returned value out of range");
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if (descID == eCSSFontDesc_UNKNOWN) {
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aResult.Truncate();
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} else {
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nsresult rv = GetPropertyValue(descID, aResult);
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NS_ENSURE_SUCCESS(rv, rv);
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mDescriptors.Get(descID).Reset();
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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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nsCSSFontFaceStyleDecl::GetPropertyPriority(const nsAString & propertyName,
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nsAString & aResult)
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{
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// font descriptors do not have priorities at present
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aResult.Truncate();
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return NS_OK;
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}
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NS_IMETHODIMP
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nsCSSFontFaceStyleDecl::SetProperty(const nsAString& propertyName,
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const nsAString& value,
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const nsAString& priority,
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nsIPrincipal* aSubjectPrincipal)
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{
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// FIXME(heycam): If we are changing unicode-range, then a FontFace object
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// representing this rule must have its mUnicodeRange value invalidated.
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return NS_ERROR_NOT_IMPLEMENTED; // bug 443978
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}
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NS_IMETHODIMP
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nsCSSFontFaceStyleDecl::GetLength(uint32_t *aLength)
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{
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uint32_t len = 0;
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for (nsCSSFontDesc id = nsCSSFontDesc(eCSSFontDesc_UNKNOWN + 1);
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id < eCSSFontDesc_COUNT;
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id = nsCSSFontDesc(id + 1))
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if (mDescriptors.Get(id).GetUnit() != eCSSUnit_Null)
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len++;
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*aLength = len;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsCSSFontFaceStyleDecl::Item(uint32_t aIndex, nsAString& aReturn)
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{
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bool found;
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IndexedGetter(aIndex, found, aReturn);
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if (!found) {
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aReturn.Truncate();
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}
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return NS_OK;
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}
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void
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nsCSSFontFaceStyleDecl::IndexedGetter(uint32_t index, bool& aFound, nsAString & aResult)
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{
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int32_t nset = -1;
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for (nsCSSFontDesc id = nsCSSFontDesc(eCSSFontDesc_UNKNOWN + 1);
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id < eCSSFontDesc_COUNT;
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id = nsCSSFontDesc(id + 1)) {
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if (mDescriptors.Get(id).GetUnit() != eCSSUnit_Null) {
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nset++;
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if (nset == int32_t(index)) {
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aFound = true;
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aResult.AssignASCII(nsCSSProps::GetStringValue(id).get());
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return;
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}
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}
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}
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aFound = false;
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}
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NS_IMETHODIMP
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nsCSSFontFaceStyleDecl::GetParentRule(nsIDOMCSSRule** aParentRule)
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{
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NS_IF_ADDREF(*aParentRule = ContainingRule());
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return NS_OK;
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}
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NS_IMETHODIMP
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nsCSSFontFaceStyleDecl::GetPropertyValue(const nsCSSPropertyID aPropID,
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nsAString& aValue)
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{
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return
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GetPropertyValue(NS_ConvertUTF8toUTF16(nsCSSProps::GetStringValue(aPropID)),
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aValue);
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}
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NS_IMETHODIMP
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nsCSSFontFaceStyleDecl::SetPropertyValue(const nsCSSPropertyID aPropID,
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const nsAString& aValue,
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nsIPrincipal* aSubjectPrincipal)
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{
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return SetProperty(NS_ConvertUTF8toUTF16(nsCSSProps::GetStringValue(aPropID)),
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aValue, EmptyString(), aSubjectPrincipal);
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}
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nsINode*
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nsCSSFontFaceStyleDecl::GetParentObject()
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{
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return ContainingRule()->GetDocument();
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}
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JSObject*
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nsCSSFontFaceStyleDecl::WrapObject(JSContext *cx, JS::Handle<JSObject*> aGivenProto)
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{
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return mozilla::dom::CSSStyleDeclarationBinding::Wrap(cx, this, aGivenProto);
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}
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// -------------------------------------------
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// nsCSSFontFaceRule
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//
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/* virtual */ already_AddRefed<css::Rule>
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nsCSSFontFaceRule::Clone() const
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{
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RefPtr<css::Rule> clone = new nsCSSFontFaceRule(*this);
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return clone.forget();
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}
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NS_IMPL_ADDREF_INHERITED(nsCSSFontFaceRule, mozilla::css::Rule)
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NS_IMPL_RELEASE_INHERITED(nsCSSFontFaceRule, mozilla::css::Rule)
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NS_IMPL_CYCLE_COLLECTION_CLASS(nsCSSFontFaceRule)
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NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN_INHERITED(nsCSSFontFaceRule,
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mozilla::css::Rule)
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// Keep this in sync with IsCCLeaf.
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// Trace the wrapper for our declaration. This just expands out
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// NS_IMPL_CYCLE_COLLECTION_TRACE_PRESERVED_WRAPPER which we can't use
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// directly because the wrapper is on the declaration, not on us.
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tmp->mDecl.TraceWrapper(aCallbacks, aClosure);
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NS_IMPL_CYCLE_COLLECTION_TRACE_END
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NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(nsCSSFontFaceRule,
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mozilla::css::Rule)
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// Keep this in sync with IsCCLeaf.
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// Unlink the wrapper for our declaraton. This just expands out
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// NS_IMPL_CYCLE_COLLECTION_UNLINK_PRESERVED_WRAPPER which we can't use
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// directly because the wrapper is on the declaration, not on us.
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tmp->mDecl.ReleaseWrapper(static_cast<nsISupports*>(p));
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NS_IMPL_CYCLE_COLLECTION_UNLINK_END
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(nsCSSFontFaceRule,
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mozilla::css::Rule)
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// Keep this in sync with IsCCLeaf.
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
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bool
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nsCSSFontFaceRule::IsCCLeaf() const
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{
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if (!Rule::IsCCLeaf()) {
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return false;
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}
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return !mDecl.PreservingWrapper();
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}
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// QueryInterface implementation for nsCSSFontFaceRule
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsCSSFontFaceRule)
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NS_INTERFACE_MAP_ENTRY(nsIDOMCSSFontFaceRule)
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NS_INTERFACE_MAP_END_INHERITING(Rule)
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#ifdef DEBUG
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void
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nsCSSFontFaceRule::List(FILE* out, int32_t aIndent) const
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{
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nsCString baseInd, descInd;
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for (int32_t indent = aIndent; --indent >= 0; ) {
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baseInd.AppendLiteral(" ");
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descInd.AppendLiteral(" ");
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}
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descInd.AppendLiteral(" ");
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nsString descStr;
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fprintf_stderr(out, "%s@font-face {\n", baseInd.get());
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for (nsCSSFontDesc id = nsCSSFontDesc(eCSSFontDesc_UNKNOWN + 1);
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id < eCSSFontDesc_COUNT;
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id = nsCSSFontDesc(id + 1))
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if (mDecl.mDescriptors.Get(id).GetUnit() != eCSSUnit_Null) {
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if (NS_FAILED(mDecl.GetPropertyValue(id, descStr)))
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descStr.AssignLiteral("#<serialization error>");
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else if (descStr.Length() == 0)
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descStr.AssignLiteral("#<serialization missing>");
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fprintf_stderr(out, "%s%s: %s\n",
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descInd.get(), nsCSSProps::GetStringValue(id).get(),
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NS_ConvertUTF16toUTF8(descStr).get());
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}
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fprintf_stderr(out, "%s}\n", baseInd.get());
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}
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#endif
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/* virtual */ int32_t
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nsCSSFontFaceRule::GetType() const
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{
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return Rule::FONT_FACE_RULE;
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}
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uint16_t
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nsCSSFontFaceRule::Type() const
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{
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return nsIDOMCSSRule::FONT_FACE_RULE;
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}
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void
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nsCSSFontFaceRule::GetCssTextImpl(nsAString& aCssText) const
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{
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nsAutoString propText;
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mDecl.GetCssTextImpl(propText);
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aCssText.AssignLiteral("@font-face {\n");
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aCssText.Append(propText);
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aCssText.Append('}');
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}
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nsICSSDeclaration*
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nsCSSFontFaceRule::Style()
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{
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return &mDecl;
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}
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NS_IMETHODIMP
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nsCSSFontFaceRule::GetStyle(nsIDOMCSSStyleDeclaration** aStyle)
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{
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NS_IF_ADDREF(*aStyle = &mDecl);
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return NS_OK;
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}
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// Arguably these should forward to nsCSSFontFaceStyleDecl methods.
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void
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nsCSSFontFaceRule::SetDesc(nsCSSFontDesc aDescID, nsCSSValue const & aValue)
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{
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NS_PRECONDITION(aDescID > eCSSFontDesc_UNKNOWN &&
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aDescID < eCSSFontDesc_COUNT,
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"aDescID out of range in nsCSSFontFaceRule::SetDesc");
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// FIXME: handle dynamic changes
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// FIXME(heycam): If we are changing unicode-range, then a FontFace object
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// representing this rule must have its mUnicodeRange value invalidated.
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mDecl.mDescriptors.Get(aDescID) = aValue;
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}
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void
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nsCSSFontFaceRule::GetDesc(nsCSSFontDesc aDescID, nsCSSValue & aValue)
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{
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NS_PRECONDITION(aDescID > eCSSFontDesc_UNKNOWN &&
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aDescID < eCSSFontDesc_COUNT,
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"aDescID out of range in nsCSSFontFaceRule::GetDesc");
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aValue = mDecl.mDescriptors.Get(aDescID);
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}
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/* virtual */ size_t
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nsCSSFontFaceRule::SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const
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{
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return aMallocSizeOf(this);
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// Measurement of the following members may be added later if DMD finds it is
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// worthwhile:
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// - mDecl
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}
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/* virtual */ JSObject*
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nsCSSFontFaceRule::WrapObject(JSContext* aCx,
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JS::Handle<JSObject*> aGivenProto)
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{
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return CSSFontFaceRuleBinding::Wrap(aCx, this, aGivenProto);
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}
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