311 lines
10 KiB
C++
311 lines
10 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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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#include "mozilla/StaticPresData.h"
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#include "mozilla/Preferences.h"
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#include "nsPresContext.h"
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namespace mozilla {
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static StaticPresData* sSingleton = nullptr;
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void
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StaticPresData::Init()
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{
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MOZ_ASSERT(!sSingleton);
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sSingleton = new StaticPresData();
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}
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void
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StaticPresData::Shutdown()
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{
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MOZ_ASSERT(sSingleton);
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delete sSingleton;
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sSingleton = nullptr;
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}
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StaticPresData*
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StaticPresData::Get()
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{
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MOZ_ASSERT(sSingleton);
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return sSingleton;
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}
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StaticPresData::StaticPresData()
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{
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mLangService = do_GetService(NS_LANGUAGEATOMSERVICE_CONTRACTID);
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mBorderWidthTable[NS_STYLE_BORDER_WIDTH_THIN] = nsPresContext::CSSPixelsToAppUnits(1);
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mBorderWidthTable[NS_STYLE_BORDER_WIDTH_MEDIUM] = nsPresContext::CSSPixelsToAppUnits(3);
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mBorderWidthTable[NS_STYLE_BORDER_WIDTH_THICK] = nsPresContext::CSSPixelsToAppUnits(5);
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}
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#define MAKE_FONT_PREF_KEY(_pref, _s0, _s1) \
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_pref.Assign(_s0); \
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_pref.Append(_s1);
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static const char* const kGenericFont[] = {
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".variable.",
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".fixed.",
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".serif.",
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".sans-serif.",
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".monospace.",
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".cursive.",
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".fantasy."
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};
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// These are private, use the list in nsFont.h if you want a public list.
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enum {
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eDefaultFont_Variable,
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eDefaultFont_Fixed,
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eDefaultFont_Serif,
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eDefaultFont_SansSerif,
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eDefaultFont_Monospace,
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eDefaultFont_Cursive,
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eDefaultFont_Fantasy,
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eDefaultFont_COUNT
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};
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const LangGroupFontPrefs*
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StaticPresData::GetFontPrefsForLangHelper(nsIAtom *aLanguage,
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const LangGroupFontPrefs* aPrefs) const
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{
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// Get language group for aLanguage:
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MOZ_ASSERT(aLanguage);
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MOZ_ASSERT(mLangService);
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MOZ_ASSERT(aPrefs);
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nsresult rv = NS_OK;
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nsIAtom *langGroupAtom = nullptr;
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langGroupAtom = mLangService->GetLanguageGroup(aLanguage, &rv);
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if (NS_FAILED(rv) || !langGroupAtom) {
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langGroupAtom = nsGkAtoms::x_western; // Assume x-western is safe...
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}
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LangGroupFontPrefs *prefs = const_cast<LangGroupFontPrefs*>(aPrefs);
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if (prefs->mLangGroup) { // if initialized
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DebugOnly<uint32_t> count = 0;
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for (;;) {
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NS_ASSERTION(++count < 35, "Lang group count exceeded!!!");
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if (prefs->mLangGroup == langGroupAtom) {
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return prefs;
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}
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if (!prefs->mNext) {
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break;
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}
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prefs = prefs->mNext;
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}
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// nothing cached, so go on and fetch the prefs for this lang group:
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prefs = prefs->mNext = new LangGroupFontPrefs;
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}
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prefs->mLangGroup = langGroupAtom;
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/* Fetch the font prefs to be used -- see bug 61883 for details.
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Not all prefs are needed upfront. Some are fallback prefs intended
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for the GFX font sub-system...
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1) unit : assumed to be the same for all language groups -------------
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font.size.unit = px | pt XXX could be folded in the size... bug 90440
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2) attributes for generic fonts --------------------------------------
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font.default.[langGroup] = serif | sans-serif - fallback generic font
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font.name.[generic].[langGroup] = current user' selected font on the pref dialog
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font.name-list.[generic].[langGroup] = fontname1, fontname2, ... [factory pre-built list]
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font.size.[generic].[langGroup] = integer - settable by the user
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font.size-adjust.[generic].[langGroup] = "float" - settable by the user
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font.minimum-size.[langGroup] = integer - settable by the user
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*/
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nsAutoCString langGroup;
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langGroupAtom->ToUTF8String(langGroup);
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prefs->mDefaultVariableFont.size = nsPresContext::CSSPixelsToAppUnits(16);
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prefs->mDefaultFixedFont.size = nsPresContext::CSSPixelsToAppUnits(13);
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nsAutoCString pref;
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// get the current applicable font-size unit
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enum {eUnit_unknown = -1, eUnit_px, eUnit_pt};
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int32_t unit = eUnit_px;
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nsAdoptingCString cvalue =
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Preferences::GetCString("font.size.unit");
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if (!cvalue.IsEmpty()) {
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if (cvalue.EqualsLiteral("px")) {
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unit = eUnit_px;
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}
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else if (cvalue.EqualsLiteral("pt")) {
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unit = eUnit_pt;
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}
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else {
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// XXX should really send this warning to the user (Error Console?).
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// And just default to unit = eUnit_px?
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NS_WARNING("unexpected font-size unit -- expected: 'px' or 'pt'");
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unit = eUnit_unknown;
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}
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}
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// get font.minimum-size.[langGroup]
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MAKE_FONT_PREF_KEY(pref, "font.minimum-size.", langGroup);
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int32_t size = Preferences::GetInt(pref.get());
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if (unit == eUnit_px) {
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prefs->mMinimumFontSize = nsPresContext::CSSPixelsToAppUnits(size);
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}
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else if (unit == eUnit_pt) {
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prefs->mMinimumFontSize = nsPresContext::CSSPointsToAppUnits(size);
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}
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nsFont* fontTypes[] = {
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&prefs->mDefaultVariableFont,
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&prefs->mDefaultFixedFont,
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&prefs->mDefaultSerifFont,
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&prefs->mDefaultSansSerifFont,
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&prefs->mDefaultMonospaceFont,
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&prefs->mDefaultCursiveFont,
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&prefs->mDefaultFantasyFont
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};
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static_assert(MOZ_ARRAY_LENGTH(fontTypes) == eDefaultFont_COUNT,
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"FontTypes array count is not correct");
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// Get attributes specific to each generic font. We do not get the user's
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// generic-font-name-to-specific-family-name preferences because its the
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// generic name that should be fed into the cascade. It is up to the GFX
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// code to look up the font prefs to convert generic names to specific
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// family names as necessary.
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nsAutoCString generic_dot_langGroup;
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for (uint32_t eType = 0; eType < ArrayLength(fontTypes); ++eType) {
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generic_dot_langGroup.Assign(kGenericFont[eType]);
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generic_dot_langGroup.Append(langGroup);
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nsFont* font = fontTypes[eType];
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// set the default variable font (the other fonts are seen as 'generic' fonts
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// in GFX and will be queried there when hunting for alternative fonts)
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if (eType == eDefaultFont_Variable) {
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MAKE_FONT_PREF_KEY(pref, "font.name.variable.", langGroup);
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nsAdoptingString value = Preferences::GetString(pref.get());
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if (!value.IsEmpty()) {
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FontFamilyName defaultVariableName = FontFamilyName::Convert(value);
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FontFamilyType defaultType = defaultVariableName.mType;
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NS_ASSERTION(defaultType == eFamily_serif ||
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defaultType == eFamily_sans_serif,
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"default type must be serif or sans-serif");
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prefs->mDefaultVariableFont.fontlist = FontFamilyList(defaultType);
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}
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else {
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MAKE_FONT_PREF_KEY(pref, "font.default.", langGroup);
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value = Preferences::GetString(pref.get());
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if (!value.IsEmpty()) {
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FontFamilyName defaultVariableName = FontFamilyName::Convert(value);
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FontFamilyType defaultType = defaultVariableName.mType;
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NS_ASSERTION(defaultType == eFamily_serif ||
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defaultType == eFamily_sans_serif,
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"default type must be serif or sans-serif");
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prefs->mDefaultVariableFont.fontlist = FontFamilyList(defaultType);
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}
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}
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}
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else {
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if (eType == eDefaultFont_Monospace) {
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// This takes care of the confusion whereby people often expect "monospace"
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// to have the same default font-size as "-moz-fixed" (this tentative
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// size may be overwritten with the specific value for "monospace" when
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// "font.size.monospace.[langGroup]" is read -- see below)
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prefs->mDefaultMonospaceFont.size = prefs->mDefaultFixedFont.size;
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}
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else if (eType != eDefaultFont_Fixed) {
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// all the other generic fonts are initialized with the size of the
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// variable font, but their specific size can supersede later -- see below
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font->size = prefs->mDefaultVariableFont.size;
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}
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}
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// Bug 84398: for spec purists, a different font-size only applies to the
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// .variable. and .fixed. fonts and the other fonts should get |font-size-adjust|.
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// The problem is that only GfxWin has the support for |font-size-adjust|. So for
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// parity, we enable the ability to set a different font-size on all platforms.
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// get font.size.[generic].[langGroup]
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// size=0 means 'Auto', i.e., generic fonts retain the size of the variable font
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MAKE_FONT_PREF_KEY(pref, "font.size", generic_dot_langGroup);
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size = Preferences::GetInt(pref.get());
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if (size > 0) {
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if (unit == eUnit_px) {
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font->size = nsPresContext::CSSPixelsToAppUnits(size);
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}
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else if (unit == eUnit_pt) {
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font->size = nsPresContext::CSSPointsToAppUnits(size);
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}
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}
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// get font.size-adjust.[generic].[langGroup]
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// XXX only applicable on GFX ports that handle |font-size-adjust|
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MAKE_FONT_PREF_KEY(pref, "font.size-adjust", generic_dot_langGroup);
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cvalue = Preferences::GetCString(pref.get());
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if (!cvalue.IsEmpty()) {
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font->sizeAdjust = (float)atof(cvalue.get());
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}
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#ifdef DEBUG_rbs
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printf("%s Family-list:%s size:%d sizeAdjust:%.2f\n",
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generic_dot_langGroup.get(),
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NS_ConvertUTF16toUTF8(font->name).get(), font->size,
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font->sizeAdjust);
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#endif
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}
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return prefs;
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}
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const nsFont*
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StaticPresData::GetDefaultFontHelper(uint8_t aFontID, nsIAtom *aLanguage,
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const LangGroupFontPrefs* aPrefs) const
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{
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MOZ_ASSERT(aLanguage);
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MOZ_ASSERT(aPrefs);
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const nsFont *font;
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switch (aFontID) {
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// Special (our default variable width font and fixed width font)
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case kPresContext_DefaultVariableFont_ID:
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font = &aPrefs->mDefaultVariableFont;
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break;
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case kPresContext_DefaultFixedFont_ID:
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font = &aPrefs->mDefaultFixedFont;
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break;
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// CSS
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case kGenericFont_serif:
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font = &aPrefs->mDefaultSerifFont;
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break;
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case kGenericFont_sans_serif:
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font = &aPrefs->mDefaultSansSerifFont;
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break;
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case kGenericFont_monospace:
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font = &aPrefs->mDefaultMonospaceFont;
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break;
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case kGenericFont_cursive:
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font = &aPrefs->mDefaultCursiveFont;
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break;
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case kGenericFont_fantasy:
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font = &aPrefs->mDefaultFantasyFont;
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break;
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default:
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font = nullptr;
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NS_ERROR("invalid arg");
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break;
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}
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return font;
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}
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} // namespace mozilla
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