Font variations.

src/ports/SkFontMgr_fontconfig.cpp

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkDataTable.h"
 #include "SkFontDescriptor.h"
 #include "SkFontHost_FreeType_common.h"
@@ skipping 357 matching lines @@
     };
     int width = map_ranges(style.width(), widthRanges, SK_ARRAY_COUNT(widthRanges));
 
     FcPatternAddInteger(pattern, FC_WEIGHT, weight);
     FcPatternAddInteger(pattern, FC_WIDTH, width);
     FcPatternAddInteger(pattern, FC_SLANT, style.isItalic() ? FC_SLANT_ITALIC : FC_SLANT_ROMAN);
 }
 
 class SkTypeface_stream : public SkTypeface_FreeType {
 public:
-    /** @param stream does not take ownership of the reference, does take ownership of the stream.*/
-    SkTypeface_stream(const SkFontStyle& style, bool fixedWidth, int index, SkStreamAsset* stream)
+    /** @param data takes ownership of the font data.*/
+    SkTypeface_stream(SkFontData* data, const SkFontStyle& style, bool fixedWidth)
         : INHERITED(style, SkTypefaceCache::NewFontID(), fixedWidth)
-        , fStream(stream)
-        , fIndex(index)
+        , fData(data)
     { };
 
     void onGetFamilyName(SkString* familyName) const override {
         familyName->reset();
     }
 
     void onGetFontDescriptor(SkFontDescriptor* desc, bool* serialize) const override {
-        desc->setFontIndex(fIndex);
         *serialize = true;
     }
 
     SkStreamAsset* onOpenStream(int* ttcIndex) const override {
-        *ttcIndex = fIndex;
-        return fStream->duplicate();
+        *ttcIndex = fData->getIndex();
+        return fData->duplicateStream();
+    }
+
+    SkFontData* onCreateFontData() const override {
+        return new SkFontData(*fData.get());
     }
 
 private:
-    SkAutoTDelete<SkStreamAsset> fStream;
-    int fIndex;
+    const SkAutoTDelete<const SkFontData> fData;
 
     typedef SkTypeface_FreeType INHERITED;
 };
 
 class SkTypeface_fontconfig : public SkTypeface_FreeType {
 public:
     /** @param pattern takes ownership of the reference. */
     static SkTypeface_fontconfig* Create(FcPattern* pattern) {
         return SkNEW_ARGS(SkTypeface_fontconfig, (pattern));
     }
     mutable SkAutoFcPattern fPattern;
 
     void onGetFamilyName(SkString* familyName) const override {
         *familyName = get_string(fPattern, FC_FAMILY);
     }
 
     void onGetFontDescriptor(SkFontDescriptor* desc, bool* serialize) const override {
         FCLocker lock;
         desc->setFamilyName(get_string(fPattern, FC_FAMILY));
         desc->setFullName(get_string(fPattern, FC_FULLNAME));
         desc->setPostscriptName(get_string(fPattern, FC_POSTSCRIPT_NAME));
-        desc->setFontIndex(get_int(fPattern, FC_INDEX, 0));
         *serialize = false;
     }
 
     SkStreamAsset* onOpenStream(int* ttcIndex) const override {
         FCLocker lock;
         *ttcIndex = get_int(fPattern, FC_INDEX, 0);
         return SkStream::NewFromFile(get_string(fPattern, FC_FILE));
     }
 
     virtual ~SkTypeface_fontconfig() {
@@ skipping 381 matching lines @@
 
     SkTypeface* onCreateFromStream(SkStreamAsset* bareStream, int ttcIndex) const override {
         SkAutoTDelete<SkStreamAsset> stream(bareStream);
         const size_t length = stream->getLength();
         if (length <= 0 || (1u << 30) < length) {
             return NULL;
         }
 
         SkFontStyle style;
         bool isFixedWidth = false;
-        if (!fScanner.scanFont(stream, ttcIndex, NULL, &style, &isFixedWidth)) {
+        if (!fScanner.scanFont(stream, ttcIndex, NULL, &style, &isFixedWidth, NULL)) {
             return NULL;
         }
 
-        return SkNEW_ARGS(SkTypeface_stream, (style, isFixedWidth, ttcIndex,
-                                              static_cast<SkStreamAsset*>(stream.detach())));
+        return SkNEW_ARGS(SkTypeface_stream, (new SkFontData(stream.detach(), ttcIndex, NULL, 0),
+                                              style, isFixedWidth));
     }
 
     SkTypeface* onCreateFromData(SkData* data, int ttcIndex) const override {
         return this->createFromStream(SkNEW_ARGS(SkMemoryStream, (data)), ttcIndex);
     }
 
     SkTypeface* onCreateFromFile(const char path[], int ttcIndex) const override {
         return this->createFromStream(SkStream::NewFromFile(path), ttcIndex);
     }
 
+    SkTypeface* onCreateFromFontData(SkFontData* fontData) const override {
+        SkStreamAsset* stream(fontData->getStream());
+        const size_t length = stream->getLength();
+        if (length <= 0 || (1u << 30) < length) {
+            return NULL;
+        }
+
+        const int ttcIndex = fontData->getIndex();
+        SkFontStyle style;
+        bool isFixedWidth = false;
+        if (!fScanner.scanFont(stream, ttcIndex, NULL, &style, &isFixedWidth, NULL)) {
+            return NULL;
+        }
+
+        return SkNEW_ARGS(SkTypeface_stream, (fontData, style, isFixedWidth));
+    }
+
     virtual SkTypeface* onLegacyCreateTypeface(const char familyName[],
                                                unsigned styleBits) const override {
         bool bold = styleBits & SkTypeface::kBold;
         bool italic = styleBits & SkTypeface::kItalic;
         SkFontStyle style = SkFontStyle(bold ? SkFontStyle::kBold_Weight
                                              : SkFontStyle::kNormal_Weight,
                                         SkFontStyle::kNormal_Width,
                                         italic ? SkFontStyle::kItalic_Slant
                                                : SkFontStyle::kUpright_Slant);
         SkAutoTUnref<SkTypeface> typeface(this->matchFamilyStyle(familyName, style));
         if (typeface.get()) {
             return typeface.detach();
         }
 
         return this->matchFamilyStyle(NULL, style);
     }
 };
 
 SkFontMgr* SkFontMgr::Factory() {
     return SkNEW(SkFontMgr_fontconfig);
 }