Add m-esr52 at 52.6.0

1 files changed, 311 insertions, 0 deletions

diff --git a/layout/base/StaticPresData.cpp b/layout/base/StaticPresData.cpp
new file mode 100644
index 0000000000..73acd5440e
--- /dev/null
+++ b/layout/base/StaticPresData.cpp
@@ -0,0 +1,311 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "mozilla/StaticPresData.h"
+
+#include "mozilla/Preferences.h"
+#include "nsPresContext.h"
+
+namespace mozilla {
+
+static StaticPresData* sSingleton = nullptr;
+
+void
+StaticPresData::Init()
+{
+  MOZ_ASSERT(!sSingleton);
+  sSingleton = new StaticPresData();
+}
+
+void
+StaticPresData::Shutdown()
+{
+  MOZ_ASSERT(sSingleton);
+  delete sSingleton;
+  sSingleton = nullptr;
+}
+
+StaticPresData*
+StaticPresData::Get()
+{
+  MOZ_ASSERT(sSingleton);
+  return sSingleton;
+}
+
+StaticPresData::StaticPresData()
+{
+  mLangService = do_GetService(NS_LANGUAGEATOMSERVICE_CONTRACTID);
+
+  mBorderWidthTable[NS_STYLE_BORDER_WIDTH_THIN] = nsPresContext::CSSPixelsToAppUnits(1);
+  mBorderWidthTable[NS_STYLE_BORDER_WIDTH_MEDIUM] = nsPresContext::CSSPixelsToAppUnits(3);
+  mBorderWidthTable[NS_STYLE_BORDER_WIDTH_THICK] = nsPresContext::CSSPixelsToAppUnits(5);
+}
+
+#define MAKE_FONT_PREF_KEY(_pref, _s0, _s1) \
+ _pref.Assign(_s0); \
+ _pref.Append(_s1);
+
+static const char* const kGenericFont[] = {
+  ".variable.",
+  ".fixed.",
+  ".serif.",
+  ".sans-serif.",
+  ".monospace.",
+  ".cursive.",
+  ".fantasy."
+};
+
+// These are private, use the list in nsFont.h if you want a public list.
+enum {
+  eDefaultFont_Variable,
+  eDefaultFont_Fixed,
+  eDefaultFont_Serif,
+  eDefaultFont_SansSerif,
+  eDefaultFont_Monospace,
+  eDefaultFont_Cursive,
+  eDefaultFont_Fantasy,
+  eDefaultFont_COUNT
+};
+
+const LangGroupFontPrefs*
+StaticPresData::GetFontPrefsForLangHelper(nsIAtom *aLanguage,
+                                          const LangGroupFontPrefs* aPrefs) const
+{
+  // Get language group for aLanguage:
+  MOZ_ASSERT(aLanguage);
+  MOZ_ASSERT(mLangService);
+  MOZ_ASSERT(aPrefs);
+
+  nsresult rv = NS_OK;
+  nsIAtom *langGroupAtom = nullptr;
+  langGroupAtom = mLangService->GetLanguageGroup(aLanguage, &rv);
+  if (NS_FAILED(rv) || !langGroupAtom) {
+    langGroupAtom = nsGkAtoms::x_western; // Assume x-western is safe...
+  }
+
+  LangGroupFontPrefs *prefs = const_cast<LangGroupFontPrefs*>(aPrefs);
+  if (prefs->mLangGroup) { // if initialized
+    DebugOnly<uint32_t> count = 0;
+    for (;;) {
+      NS_ASSERTION(++count < 35, "Lang group count exceeded!!!");
+      if (prefs->mLangGroup == langGroupAtom) {
+        return prefs;
+      }
+      if (!prefs->mNext) {
+        break;
+      }
+      prefs = prefs->mNext;
+    }
+
+    // nothing cached, so go on and fetch the prefs for this lang group:
+    prefs = prefs->mNext = new LangGroupFontPrefs;
+  }
+
+  prefs->mLangGroup = langGroupAtom;
+
+  /* Fetch the font prefs to be used -- see bug 61883 for details.
+     Not all prefs are needed upfront. Some are fallback prefs intended
+     for the GFX font sub-system...
+
+  1) unit : assumed to be the same for all language groups -------------
+  font.size.unit = px | pt    XXX could be folded in the size... bug 90440
+
+  2) attributes for generic fonts --------------------------------------
+  font.default.[langGroup] = serif | sans-serif - fallback generic font
+  font.name.[generic].[langGroup] = current user' selected font on the pref dialog
+  font.name-list.[generic].[langGroup] = fontname1, fontname2, ... [factory pre-built list]
+  font.size.[generic].[langGroup] = integer - settable by the user
+  font.size-adjust.[generic].[langGroup] = "float" - settable by the user
+  font.minimum-size.[langGroup] = integer - settable by the user
+  */
+
+  nsAutoCString langGroup;
+  langGroupAtom->ToUTF8String(langGroup);
+
+  prefs->mDefaultVariableFont.size = nsPresContext::CSSPixelsToAppUnits(16);
+  prefs->mDefaultFixedFont.size = nsPresContext::CSSPixelsToAppUnits(13);
+
+  nsAutoCString pref;
+
+  // get the current applicable font-size unit
+  enum {eUnit_unknown = -1, eUnit_px, eUnit_pt};
+  int32_t unit = eUnit_px;
+
+  nsAdoptingCString cvalue =
+    Preferences::GetCString("font.size.unit");
+
+  if (!cvalue.IsEmpty()) {
+    if (cvalue.EqualsLiteral("px")) {
+      unit = eUnit_px;
+    }
+    else if (cvalue.EqualsLiteral("pt")) {
+      unit = eUnit_pt;
+    }
+    else {
+      // XXX should really send this warning to the user (Error Console?).
+      // And just default to unit = eUnit_px?
+      NS_WARNING("unexpected font-size unit -- expected: 'px' or 'pt'");
+      unit = eUnit_unknown;
+    }
+  }
+
+  // get font.minimum-size.[langGroup]
+
+  MAKE_FONT_PREF_KEY(pref, "font.minimum-size.", langGroup);
+
+  int32_t size = Preferences::GetInt(pref.get());
+  if (unit == eUnit_px) {
+    prefs->mMinimumFontSize = nsPresContext::CSSPixelsToAppUnits(size);
+  }
+  else if (unit == eUnit_pt) {
+    prefs->mMinimumFontSize = nsPresContext::CSSPointsToAppUnits(size);
+  }
+
+  nsFont* fontTypes[] = {
+    &prefs->mDefaultVariableFont,
+    &prefs->mDefaultFixedFont,
+    &prefs->mDefaultSerifFont,
+    &prefs->mDefaultSansSerifFont,
+    &prefs->mDefaultMonospaceFont,
+    &prefs->mDefaultCursiveFont,
+    &prefs->mDefaultFantasyFont
+  };
+  static_assert(MOZ_ARRAY_LENGTH(fontTypes) == eDefaultFont_COUNT,
+                "FontTypes array count is not correct");
+
+  // Get attributes specific to each generic font. We do not get the user's
+  // generic-font-name-to-specific-family-name preferences because its the
+  // generic name that should be fed into the cascade. It is up to the GFX
+  // code to look up the font prefs to convert generic names to specific
+  // family names as necessary.
+  nsAutoCString generic_dot_langGroup;
+  for (uint32_t eType = 0; eType < ArrayLength(fontTypes); ++eType) {
+    generic_dot_langGroup.Assign(kGenericFont[eType]);
+    generic_dot_langGroup.Append(langGroup);
+
+    nsFont* font = fontTypes[eType];
+
+    // set the default variable font (the other fonts are seen as 'generic' fonts
+    // in GFX and will be queried there when hunting for alternative fonts)
+    if (eType == eDefaultFont_Variable) {
+      MAKE_FONT_PREF_KEY(pref, "font.name.variable.", langGroup);
+
+      nsAdoptingString value = Preferences::GetString(pref.get());
+      if (!value.IsEmpty()) {
+        FontFamilyName defaultVariableName = FontFamilyName::Convert(value);
+        FontFamilyType defaultType = defaultVariableName.mType;
+        NS_ASSERTION(defaultType == eFamily_serif ||
+                     defaultType == eFamily_sans_serif,
+                     "default type must be serif or sans-serif");
+        prefs->mDefaultVariableFont.fontlist = FontFamilyList(defaultType);
+      }
+      else {
+        MAKE_FONT_PREF_KEY(pref, "font.default.", langGroup);
+        value = Preferences::GetString(pref.get());
+        if (!value.IsEmpty()) {
+          FontFamilyName defaultVariableName = FontFamilyName::Convert(value);
+          FontFamilyType defaultType = defaultVariableName.mType;
+          NS_ASSERTION(defaultType == eFamily_serif ||
+                       defaultType == eFamily_sans_serif,
+                       "default type must be serif or sans-serif");
+          prefs->mDefaultVariableFont.fontlist = FontFamilyList(defaultType);
+        }
+      }
+    }
+    else {
+      if (eType == eDefaultFont_Monospace) {
+        // This takes care of the confusion whereby people often expect "monospace"
+        // to have the same default font-size as "-moz-fixed" (this tentative
+        // size may be overwritten with the specific value for "monospace" when
+        // "font.size.monospace.[langGroup]" is read -- see below)
+        prefs->mDefaultMonospaceFont.size = prefs->mDefaultFixedFont.size;
+      }
+      else if (eType != eDefaultFont_Fixed) {
+        // all the other generic fonts are initialized with the size of the
+        // variable font, but their specific size can supersede later -- see below
+        font->size = prefs->mDefaultVariableFont.size;
+      }
+    }
+
+    // Bug 84398: for spec purists, a different font-size only applies to the
+    // .variable. and .fixed. fonts and the other fonts should get |font-size-adjust|.
+    // The problem is that only GfxWin has the support for |font-size-adjust|. So for
+    // parity, we enable the ability to set a different font-size on all platforms.
+
+    // get font.size.[generic].[langGroup]
+    // size=0 means 'Auto', i.e., generic fonts retain the size of the variable font
+    MAKE_FONT_PREF_KEY(pref, "font.size", generic_dot_langGroup);
+    size = Preferences::GetInt(pref.get());
+    if (size > 0) {
+      if (unit == eUnit_px) {
+        font->size = nsPresContext::CSSPixelsToAppUnits(size);
+      }
+      else if (unit == eUnit_pt) {
+        font->size = nsPresContext::CSSPointsToAppUnits(size);
+      }
+    }
+
+    // get font.size-adjust.[generic].[langGroup]
+    // XXX only applicable on GFX ports that handle |font-size-adjust|
+    MAKE_FONT_PREF_KEY(pref, "font.size-adjust", generic_dot_langGroup);
+    cvalue = Preferences::GetCString(pref.get());
+    if (!cvalue.IsEmpty()) {
+      font->sizeAdjust = (float)atof(cvalue.get());
+    }
+
+#ifdef DEBUG_rbs
+    printf("%s Family-list:%s size:%d sizeAdjust:%.2f\n",
+           generic_dot_langGroup.get(),
+           NS_ConvertUTF16toUTF8(font->name).get(), font->size,
+           font->sizeAdjust);
+#endif
+  }
+
+  return prefs;
+}
+
+const nsFont*
+StaticPresData::GetDefaultFontHelper(uint8_t aFontID, nsIAtom *aLanguage,
+                                     const LangGroupFontPrefs* aPrefs) const
+{
+  MOZ_ASSERT(aLanguage);
+  MOZ_ASSERT(aPrefs);
+
+  const nsFont *font;
+  switch (aFontID) {
+    // Special (our default variable width font and fixed width font)
+    case kPresContext_DefaultVariableFont_ID:
+      font = &aPrefs->mDefaultVariableFont;
+      break;
+    case kPresContext_DefaultFixedFont_ID:
+      font = &aPrefs->mDefaultFixedFont;
+      break;
+    // CSS
+    case kGenericFont_serif:
+      font = &aPrefs->mDefaultSerifFont;
+      break;
+    case kGenericFont_sans_serif:
+      font = &aPrefs->mDefaultSansSerifFont;
+      break;
+    case kGenericFont_monospace:
+      font = &aPrefs->mDefaultMonospaceFont;
+      break;
+    case kGenericFont_cursive:
+      font = &aPrefs->mDefaultCursiveFont;
+      break;
+    case kGenericFont_fantasy:
+      font = &aPrefs->mDefaultFantasyFont;
+      break;
+    default:
+      font = nullptr;
+      NS_ERROR("invalid arg");
+      break;
+  }
+  return font;
+}
+
+
+} // namespace mozilla