1 files changed, 115 insertions, 0 deletions
diff --git a/src/deps/skia/include/ports/SkFontConfigInterface.h b/src/deps/skia/include/ports/SkFontConfigInterface.h
new file mode 100644
index 000000000..65fd61259
--- /dev/null
+++ b/src/deps/skia/include/ports/SkFontConfigInterface.h
@@ -0,0 +1,115 @@
+/*
+ * Copyright 2013 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef SkFontConfigInterface_DEFINED
+#define SkFontConfigInterface_DEFINED
+
+#include "include/core/SkFontStyle.h"
+#include "include/core/SkRefCnt.h"
+#include "include/core/SkStream.h"
+#include "include/core/SkTypeface.h"
+
+class SkFontMgr;
+
+/**
+ *  \class SkFontConfigInterface
+ *
+ *  A simple interface for remotable font management.
+ *  The global instance can be found with RefGlobal().
+ */
+class SK_API SkFontConfigInterface : public SkRefCnt {
+public:
+
+    /**
+     *  Returns the global SkFontConfigInterface instance. If it is not
+     *  nullptr, calls ref() on it. The caller must balance this with a call to
+     *  unref(). The default SkFontConfigInterface is the result of calling
+     *  GetSingletonDirectInterface.
+     */
+    static sk_sp<SkFontConfigInterface> RefGlobal();
+
+    /**
+     *  Replace the current global instance with the specified one.
+     */
+    static void SetGlobal(sk_sp<SkFontConfigInterface> fc);
+
+    /**
+     *  This should be treated as private to the impl of SkFontConfigInterface.
+     *  Callers should not change or expect any particular values. It is meant
+     *  to be a union of possible storage types to aid the impl.
+     */
+    struct FontIdentity {
+        FontIdentity() : fID(0), fTTCIndex(0) {}
+
+        bool operator==(const FontIdentity& other) const {
+            return fID == other.fID &&
+                   fTTCIndex == other.fTTCIndex &&
+                   fString == other.fString;
+        }
+        bool operator!=(const FontIdentity& other) const {
+            return !(*this == other);
+        }
+
+        uint32_t    fID;
+        int32_t     fTTCIndex;
+        SkString    fString;
+        SkFontStyle fStyle;
+
+        // If buffer is NULL, just return the number of bytes that would have
+        // been written. Will pad contents to a multiple of 4.
+        size_t writeToMemory(void* buffer = nullptr) const;
+
+        // Recreate from a flattened buffer, returning the number of bytes read.
+        size_t readFromMemory(const void* buffer, size_t length);
+    };
+
+    /**
+     *  Given a familyName and style, find the best match.
+     *
+     *  If a match is found, return true and set its outFontIdentifier.
+     *      If outFamilyName is not null, assign the found familyName to it
+     *          (which may differ from the requested familyName).
+     *      If outStyle is not null, assign the found style to it
+     *          (which may differ from the requested style).
+     *
+     *  If a match is not found, return false, and ignore all out parameters.
+     */
+    virtual bool matchFamilyName(const char familyName[],
+                                 SkFontStyle requested,
+                                 FontIdentity* outFontIdentifier,
+                                 SkString* outFamilyName,
+                                 SkFontStyle* outStyle) = 0;
+
+    /**
+     *  Given a FontRef, open a stream to access its data, or return null
+     *  if the FontRef's data is not available. The caller is responsible for
+     *  deleting the stream when it is done accessing the data.
+     */
+    virtual SkStreamAsset* openStream(const FontIdentity&) = 0;
+
+    /**
+     *  Return an SkTypeface for the given FontIdentity.
+     *
+     *  The default implementation simply returns a new typeface built using data obtained from
+     *  openStream(), but derived classes may implement more complex caching schemes.
+     */
+    virtual sk_sp<SkTypeface> makeTypeface(const FontIdentity& identity) {
+        return SkTypeface::MakeFromStream(std::unique_ptr<SkStreamAsset>(this->openStream(identity)),
+                                          identity.fTTCIndex);
+
+    }
+
+    /**
+     *  Return a singleton instance of a direct subclass that calls into
+     *  libfontconfig. This does not affect the refcnt of the returned instance.
+     */
+    static SkFontConfigInterface* GetSingletonDirectInterface();
+
+    using INHERITED = SkRefCnt;
+};
+
+#endif