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      1 /*
      2  * Copyright 2012 Google Inc.
      3  *
      4  * Use of this source code is governed by a BSD-style license that can be
      5  * found in the LICENSE file.
      6  */
      7 
      8 #ifndef SkFontDescriptor_DEFINED
      9 #define SkFontDescriptor_DEFINED
     10 
     11 #include "SkStream.h"
     12 #include "SkString.h"
     13 #include "SkTypeface.h"
     14 
     15 class SkFontData {
     16 public:
     17     /** This takes ownership of 'stream'. Makes a copy of the data in 'axis'. */
     18     SkFontData(SkStreamAsset* stream, int index, const SkFixed axis[], int axisCount)
     19         : fStream(stream), fIndex(index), fAxisCount(axisCount), fAxis(axisCount)
     20     {
     21         for (int i = 0; i < axisCount; ++i) {
     22             fAxis[i] = axis[i];
     23         }
     24     }
     25     SkFontData(const SkFontData& that)
     26         : fStream(that.fStream->duplicate())
     27         , fIndex(that.fIndex)
     28         , fAxisCount(that.fAxisCount)
     29         , fAxis(fAxisCount)
     30     {
     31         for (int i = 0; i < fAxisCount; ++i) {
     32             fAxis[i] = that.fAxis[i];
     33         }
     34     }
     35     bool hasStream() const { return fStream.get() != nullptr; }
     36     SkStreamAsset* duplicateStream() const { return fStream->duplicate(); }
     37     SkStreamAsset* detachStream() { return fStream.detach(); }
     38     SkStreamAsset* getStream() { return fStream.get(); }
     39     int getIndex() const { return fIndex; }
     40     int getAxisCount() const { return fAxisCount; }
     41     const SkFixed* getAxis() const { return fAxis.get(); }
     42 
     43 private:
     44     SkAutoTDelete<SkStreamAsset> fStream;
     45     int fIndex;
     46     int fAxisCount;
     47     SkAutoSTMalloc<4, SkFixed> fAxis;
     48 };
     49 
     50 class SkFontDescriptor : SkNoncopyable {
     51 public:
     52     SkFontDescriptor(SkTypeface::Style = SkTypeface::kNormal);
     53     // Does not affect ownership of SkStream.
     54     static bool Deserialize(SkStream*, SkFontDescriptor* result);
     55 
     56     void serialize(SkWStream*);
     57 
     58     SkTypeface::Style getStyle() { return fStyle; }
     59     void setStyle(SkTypeface::Style style) { fStyle = style; }
     60 
     61     const char* getFamilyName() const { return fFamilyName.c_str(); }
     62     const char* getFullName() const { return fFullName.c_str(); }
     63     const char* getPostscriptName() const { return fPostscriptName.c_str(); }
     64     bool hasFontData() const { return fFontData.get() != nullptr; }
     65     SkFontData* detachFontData() { return fFontData.detach(); }
     66 
     67     void setFamilyName(const char* name) { fFamilyName.set(name); }
     68     void setFullName(const char* name) { fFullName.set(name); }
     69     void setPostscriptName(const char* name) { fPostscriptName.set(name); }
     70     /** Set the font data only if it is necessary for serialization.
     71      *  This method takes ownership of the font data. */
     72     void setFontData(SkFontData* data) { fFontData.reset(data); }
     73 
     74 private:
     75     SkString fFamilyName;
     76     SkString fFullName;
     77     SkString fPostscriptName;
     78     SkAutoTDelete<SkFontData> fFontData;
     79 
     80     SkTypeface::Style fStyle;
     81 };
     82 
     83 #endif // SkFontDescriptor_DEFINED
     84