SkFontDescriptor.h revision 05773ed30920c0214d1433c07cf6360a05476c97 
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
15class SkFontData {
16public:
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() != NULL; }
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
43private:
44    SkAutoTDelete<SkStreamAsset> fStream;
45    int fIndex;
46    int fAxisCount;
47    SkAutoSTMalloc<4, SkFixed> fAxis;
48};
49
50class SkFontDescriptor : SkNoncopyable {
51public:
52    SkFontDescriptor(SkTypeface::Style = SkTypeface::kNormal);
53    // Does not affect ownership of SkStream.
54    SkFontDescriptor(SkStream*);
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() != NULL; }
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
74private:
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