SkGScalerContext.h revision c79172857c3f69cc46837e1beeae0c1ead377bb2 
1/*
2 * Copyright 2013 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 SkGScalerContext_DEFINED
9#define SkGScalerContext_DEFINED
10
11#include "SkScalerContext.h"
12#include "SkTypeface.h"
13
14class SkGTypeface : public SkTypeface {
15public:
16    SkGTypeface(SkTypeface* proxy, const SkPaint&);
17    virtual ~SkGTypeface();
18
19    SkTypeface* proxy() const { return fProxy; }
20    const SkPaint& paint() const { return fPaint; }
21
22protected:
23    SkScalerContext* onCreateScalerContext(const SkScalerContextEffects&,
24                                           const SkDescriptor*) const override;
25    void onFilterRec(SkScalerContextRec*) const override;
26    SkAdvancedTypefaceMetrics* onGetAdvancedTypefaceMetrics(
27        PerGlyphInfo,
28        const uint32_t* glyphIDs,
29        uint32_t glyphIDsCount) const override;
30    SkStreamAsset* onOpenStream(int* ttcIndex) const override;
31    void onGetFontDescriptor(SkFontDescriptor*, bool* isLocal) const override;
32
33    int onCharsToGlyphs(const void* chars, Encoding encoding,
34                        uint16_t glyphs[], int glyphCount) const override;
35    int onCountGlyphs() const override;
36    int onGetUPEM() const override;
37
38    void onGetFamilyName(SkString* familyName) const override;
39    SkTypeface::LocalizedStrings* onCreateFamilyNameIterator() const override;
40
41    int onGetTableTags(SkFontTableTag tags[]) const override;
42    size_t onGetTableData(SkFontTableTag, size_t offset,
43                          size_t length, void* data) const override;
44
45private:
46    SkTypeface* fProxy;
47    SkPaint     fPaint;
48};
49
50#endif
51