migrate to sk_sp for SkFontMgr API

Bug: skia:
Change-Id: I1bf2a13537f67938cdc9956080065d10ea0bd1d8
Reviewed-on: https://skia-review.googlesource.com/48740
Commit-Queue: Ben Wagner <bungeman@google.com>
Reviewed-by: Ben Wagner <bungeman@google.com>

2 files changed, 51 insertions, 17 deletions

diff --git a/include/ports/SkFontMgr.h b/include/ports/SkFontMgr.h
index b13e113a2e..08e406a97d 100644
--- a/include/ports/SkFontMgr.h
+++ b/include/ports/SkFontMgr.h
@@ -95,26 +95,28 @@ public:
      *  or NULL if the data is not recognized. The caller must call unref() on
      *  the returned object if it is not null.
      */
-    SkTypeface* createFromData(SkData*, int ttcIndex = 0) const;
+    sk_sp<SkTypeface> makeFromData(sk_sp<SkData>, int ttcIndex = 0) const;
 
     /**
      *  Create a typeface for the specified stream and TTC index
      *  (pass 0 for none) or NULL if the stream is not recognized. The caller
      *  must call unref() on the returned object if it is not null.
      */
-    SkTypeface* createFromStream(SkStreamAsset*, int ttcIndex = 0) const;
+    sk_sp<SkTypeface> makeFromStream(std::unique_ptr<SkStreamAsset>, int ttcIndex = 0) const;
 
-    // deprecated, use SkFontArguments instead.
+#ifdef SK_SUPPORT_LEGACY_FONTMGR_API
     using FontParameters = SkFontArguments;
+#endif
+
     /* Experimental, API subject to change. */
-    SkTypeface* createFromStream(SkStreamAsset*, const SkFontArguments&) const;
+    sk_sp<SkTypeface> makeFromStream(std::unique_ptr<SkStreamAsset>, const SkFontArguments&) const;
 
     /**
      *  Create a typeface from the specified font data.
      *  Will return NULL if the typeface could not be created.
      *  The caller must call unref() on the returned object if it is not null.
      */
-    SkTypeface* createFromFontData(std::unique_ptr<SkFontData>) const;
+    sk_sp<SkTypeface> makeFromFontData(std::unique_ptr<SkFontData>) const;
 
     /**
      *  Create a typeface for the specified fileName and TTC index
@@ -122,9 +124,18 @@ public:
      *  not recognized. The caller must call unref() on the returned object
      *  if it is not null.
      */
-    SkTypeface* createFromFile(const char path[], int ttcIndex = 0) const;
+    sk_sp<SkTypeface> makeFromFile(const char path[], int ttcIndex = 0) const;
+
+    sk_sp<SkTypeface> legacyMakeTypeface(const char familyName[], SkFontStyle style) const;
 
+#ifdef SK_SUPPORT_LEGACY_FONTMGR_API
+    SkTypeface* createFromData(SkData* data, int ttcIndex = 0) const;
+    SkTypeface* createFromStream(SkStreamAsset* strm, int ttcIndex = 0) const;
+    SkTypeface* createFromStream(SkStreamAsset* strm, const SkFontArguments& args) const;
+    SkTypeface* createFromFontData(std::unique_ptr<SkFontData> fd) const;
+    SkTypeface* createFromFile(const char path[], int ttcIndex = 0) const;
     SkTypeface* legacyCreateTypeface(const char familyName[], SkFontStyle style) const;
+#endif
 
     /** Return the default fontmgr. */
     static sk_sp<SkFontMgr> RefDefault();
@@ -145,14 +156,38 @@ protected:
     virtual SkTypeface* onMatchFaceStyle(const SkTypeface*,
                                          const SkFontStyle&) const = 0;
 
-    virtual SkTypeface* onCreateFromData(SkData*, int ttcIndex) const = 0;
-    virtual SkTypeface* onCreateFromStream(SkStreamAsset*, int ttcIndex) const = 0;
-    // TODO: make pure virtual.
+#ifdef SK_SUPPORT_LEGACY_FONTMGR_API
+    // legacy virtuals
+    virtual SkTypeface* onCreateFromData(SkData*, int) const { return nullptr; }
+    virtual SkTypeface* onCreateFromStream(SkStreamAsset*, int) const { return nullptr; }
     virtual SkTypeface* onCreateFromStream(SkStreamAsset*, const SkFontArguments&) const;
     virtual SkTypeface* onCreateFromFontData(std::unique_ptr<SkFontData>) const;
-    virtual SkTypeface* onCreateFromFile(const char path[], int ttcIndex) const = 0;
-
-    virtual SkTypeface* onLegacyCreateTypeface(const char familyName[], SkFontStyle) const = 0;
+    virtual SkTypeface* onCreateFromFile(const char[], int) const { return nullptr; }
+    virtual SkTypeface* onLegacyCreateTypeface(const char[], SkFontStyle) const {
+        return nullptr;
+    }
+
+    // new virtuals express as calling legacy versions
+
+    virtual sk_sp<SkTypeface> onMakeFromData(sk_sp<SkData> data, int ttcIndex) const;
+    virtual sk_sp<SkTypeface> onMakeFromStreamIndex(std::unique_ptr<SkStreamAsset> strm,
+                                                    int ttcIndex) const;
+    virtual sk_sp<SkTypeface> onMakeFromStreamArgs(std::unique_ptr<SkStreamAsset> strm,
+                                               const SkFontArguments& args) const;
+    virtual sk_sp<SkTypeface> onMakeFromFontData(std::unique_ptr<SkFontData> fd) const;
+    virtual sk_sp<SkTypeface> onMakeFromFile(const char path[], int ttcIndex) const;
+    virtual sk_sp<SkTypeface> onLegacyMakeTypeface(const char familyName[], SkFontStyle style) const;
+#else
+    virtual sk_sp<SkTypeface> onMakeFromData(sk_sp<SkData>, int ttcIndex) const = 0;
+    virtual sk_sp<SkTypeface> onMakeFromStreamIndex(std::unique_ptr<SkStreamAsset>,
+                                                    int ttcIndex) const = 0;
+    virtual sk_sp<SkTypeface> onMakeFromStreamArgs(std::unique_ptr<SkStreamAsset>,
+                                                   const SkFontArguments&) const;
+    virtual sk_sp<SkTypeface> onMakeFromFontData(std::unique_ptr<SkFontData>) const;
+    virtual sk_sp<SkTypeface> onMakeFromFile(const char path[], int ttcIndex) const = 0;
+
+    virtual sk_sp<SkTypeface> onLegacyMakeTypeface(const char familyName[], SkFontStyle) const = 0;
+#endif
 
 private:
 
diff --git a/include/ports/SkFontMgr_indirect.h b/include/ports/SkFontMgr_indirect.h
index 251d74a83a..04e903ed14 100644
--- a/include/ports/SkFontMgr_indirect.h
+++ b/include/ports/SkFontMgr_indirect.h
@@ -50,11 +50,10 @@ protected:
     SkTypeface* onMatchFaceStyle(const SkTypeface* familyMember,
                                  const SkFontStyle& fontStyle) const override;
 
-    SkTypeface* onCreateFromStream(SkStreamAsset* stream, int ttcIndex) const override;
-    SkTypeface* onCreateFromFile(const char path[], int ttcIndex) const override;
-    SkTypeface* onCreateFromData(SkData* data, int ttcIndex) const override;
-
-    SkTypeface* onLegacyCreateTypeface(const char familyName[], SkFontStyle) const override;
+    sk_sp<SkTypeface> onMakeFromStreamIndex(std::unique_ptr<SkStreamAsset>, int ttcIndex) const override;
+    sk_sp<SkTypeface> onMakeFromFile(const char path[], int ttcIndex) const override;
+    sk_sp<SkTypeface> onMakeFromData(sk_sp<SkData>, int ttcIndex) const override;
+    sk_sp<SkTypeface> onLegacyMakeTypeface(const char familyName[], SkFontStyle) const override;
 
 private:
     SkTypeface* createTypefaceFromFontId(const SkFontIdentity& fontId) const;