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5de6bdb13b
The default value is 'px'. The alternative value is 'pt', but it's not clear that changing it to 'pt' will actually work sensibly. It was first suggested that this pref be removed 17 years ago, and it doesn't appear to have become more useful since then. It's not set anywhere. Let's remove it. --HG-- extra : rebase_source : 9dbb44102db2bcc5ba6c2f354dc35d8a86acd8f3
326 lines
11 KiB
C++
326 lines
11 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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#include "mozilla/StaticPresData.h"
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#include "mozilla/Preferences.h"
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#include "mozilla/ServoBindings.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 = nsLanguageAtomService::GetService();
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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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void
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LangGroupFontPrefs::Initialize(nsAtom* aLangGroupAtom)
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{
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mLangGroup = aLangGroupAtom;
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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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-- 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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aLangGroupAtom->ToUTF8String(langGroup);
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mDefaultVariableFont.size = nsPresContext::CSSPixelsToAppUnits(16);
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mDefaultFixedFont.size = nsPresContext::CSSPixelsToAppUnits(13);
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nsAutoCString pref;
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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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mMinimumFontSize = nsPresContext::CSSPixelsToAppUnits(size);
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nsFont* fontTypes[] = {
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&mDefaultVariableFont,
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&mDefaultFixedFont,
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&mDefaultSerifFont,
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&mDefaultSansSerifFont,
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&mDefaultMonospaceFont,
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&mDefaultCursiveFont,
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&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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// XXX "font.name.variable."? There is no such pref...
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MAKE_FONT_PREF_KEY(pref, "font.name.variable.", langGroup);
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nsAutoString value;
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Preferences::GetString(pref.get(), value);
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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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mDefaultVariableFont.fontlist = FontFamilyList();
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mDefaultVariableFont.fontlist.SetDefaultFontType(defaultType);
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// We create mDefaultVariableFont.fontlist with defaultType as the
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// fallback font, and not as part of the font list proper. This way,
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// it can be overwritten should there be a language change.
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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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Preferences::GetString(pref.get(), value);
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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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mDefaultVariableFont.fontlist = FontFamilyList();
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mDefaultVariableFont.fontlist.SetDefaultFontType(defaultType);
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// We create mDefaultVariableFont.fontlist with defaultType as the
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// (fallback) font, and not as part of the font list proper. This way,
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// it can be overwritten should there be a language change.
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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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mDefaultMonospaceFont.size = 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 = 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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font->size = nsPresContext::CSSPixelsToAppUnits(size);
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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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nsAutoCString cvalue;
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Preferences::GetCString(pref.get(), cvalue);
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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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}
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nsAtom*
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StaticPresData::GetLangGroup(nsAtom* aLanguage,
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bool* aNeedsToCache) const
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{
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nsAtom* langGroupAtom = nullptr;
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langGroupAtom = mLangService->GetLanguageGroup(aLanguage, aNeedsToCache);
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if (!langGroupAtom) {
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langGroupAtom = nsGkAtoms::x_western; // Assume x-western is safe...
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}
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return langGroupAtom;
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}
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already_AddRefed<nsAtom>
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StaticPresData::GetUncachedLangGroup(nsAtom* aLanguage) const
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{
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RefPtr<nsAtom> langGroupAtom = mLangService->GetUncachedLanguageGroup(aLanguage);
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if (!langGroupAtom) {
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langGroupAtom = nsGkAtoms::x_western; // Assume x-western is safe...
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}
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return langGroupAtom.forget();
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}
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const LangGroupFontPrefs*
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StaticPresData::GetFontPrefsForLangHelper(nsAtom* aLanguage,
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const LangGroupFontPrefs* aPrefs,
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bool* aNeedsToCache) 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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nsAtom* langGroupAtom = GetLangGroup(aLanguage, aNeedsToCache);
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if (aNeedsToCache && *aNeedsToCache) {
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return nullptr;
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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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if (aNeedsToCache) {
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*aNeedsToCache = true;
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return nullptr;
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}
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AssertIsMainThreadOrServoLangFontPrefsCacheLocked();
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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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if (aNeedsToCache) {
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*aNeedsToCache = true;
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return nullptr;
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}
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AssertIsMainThreadOrServoLangFontPrefsCacheLocked();
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prefs->Initialize(langGroupAtom);
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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, nsAtom *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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