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* Copyright 2014 Google Inc.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
#ifndef TestSVGTypeface_DEFINED
#define TestSVGTypeface_DEFINED
#include "include/core/SkFontArguments.h"
#include "include/core/SkFontMetrics.h"
#include "include/core/SkPaint.h"
#include "include/core/SkPoint.h"
#include "include/core/SkRect.h"
#include "include/core/SkRefCnt.h"
#include "include/core/SkScalar.h"
#include "include/core/SkSpan.h"
#include "include/core/SkStream.h"
#include "include/core/SkString.h"
#include "include/core/SkTypeface.h"
#include "include/core/SkTypes.h"
#include "include/pathops/SkPathOps.h"
#include "include/private/base/SkMutex.h"
#include "include/private/base/SkTArray.h"
#include "src/core/SkTHash.h"
#include <memory>
class SkCanvas;
class SkDescriptor;
class SkFontDescriptor;
class SkFontStyle;
class SkGlyph;
class SkPath;
class SkScalerContext;
class SkSVGDOM;
class SkWStream;
struct SkAdvancedTypefaceMetrics;
struct SkScalerContextEffects;
struct SkScalerContextRec;
struct SkSVGTestTypefaceGlyphData {
const char* fSvgResourcePath;
SkPoint fOrigin; // y-down
SkScalar fAdvance;
SkUnichar fUnicode; // TODO: this limits to 1:1
class TestSVGTypeface : public SkTypeface {
~TestSVGTypeface() override;
SkVector getAdvance(SkGlyphID) const;
void getFontMetrics(SkFontMetrics* metrics) const;
static sk_sp<TestSVGTypeface> Default();
static sk_sp<TestSVGTypeface> Planets();
void exportTtxCbdt(SkWStream*, SkSpan<unsigned> strikeSizes) const;
void exportTtxSbix(SkWStream*, SkSpan<unsigned> strikeSizes) const;
void exportTtxColr(SkWStream*) const;
virtual bool getPathOp(SkColor, SkPathOp*) const = 0;
struct GlyfLayerInfo {
GlyfLayerInfo(int layerColorIndex, SkIRect bounds)
: fLayerColorIndex(layerColorIndex), fBounds(bounds) {}
int fLayerColorIndex;
SkIRect fBounds;
struct GlyfInfo {
GlyfInfo() : fBounds(SkIRect::MakeEmpty()) {}
SkIRect fBounds;
skia_private::TArray<GlyfLayerInfo> fLayers;
void exportTtxCommon(
SkWStream*, const char* type, const skia_private::TArray<GlyfInfo>* = nullptr) const;
std::unique_ptr<SkScalerContext> onCreateScalerContext(const SkScalerContextEffects&,
const SkDescriptor* desc) const override;
void onFilterRec(SkScalerContextRec* rec) const override;
void getGlyphToUnicodeMap(SkUnichar*) const override;
std::unique_ptr<SkAdvancedTypefaceMetrics> onGetAdvancedMetrics() const override;
sk_sp<SkTypeface> onMakeClone(const SkFontArguments& args) const override {
return sk_ref_sp(this);
void onGetFontDescriptor(SkFontDescriptor* desc, bool* isLocal) const override = 0;
void onCharsToGlyphs(const SkUnichar* chars, int count, SkGlyphID glyphs[]) const override;
void getPostScriptGlyphNames(SkString*) const override {}
int onCountGlyphs() const override { return fGlyphCount; }
int onGetUPEM() const override { return fUpem; }
void onGetFamilyName(SkString* familyName) const override;
bool onGetPostScriptName(SkString*) const override;
SkTypeface::LocalizedStrings* onCreateFamilyNameIterator() const override;
bool onGlyphMaskNeedsCurrentColor() const override { return false; }
int onGetVariationDesignPosition(SkFontArguments::VariationPosition::Coordinate coordinates[],
int coordinateCount) const override {
return 0;
int onGetVariationDesignParameters(SkFontParameters::Variation::Axis parameters[],
int parameterCount) const override {
return 0;
int onGetTableTags(SkFontTableTag tags[]) const override { return 0; }
size_t onGetTableData(SkFontTableTag tag,
size_t offset,
size_t length,
void* data) const override {
return 0;
TestSVGTypeface(const char* name,
int upem,
const SkFontMetrics& metrics,
SkSpan<const SkSVGTestTypefaceGlyphData> data,
const SkFontStyle& style);
struct Glyph {
SkPoint fOrigin;
SkScalar fAdvance;
const char* fResourcePath;
SkSize size() const;
void render(SkCanvas*) const;
// Lazily parses the SVG from fResourcePath, and manages mutex locking.
template <typename Fn> void withSVG(Fn&&) const;
// The mutex guards lazy parsing of the SVG, but also predates that.
// Must be SkSVGDOM::render() is not thread safe?
// If not, an SkOnce is enough here.
mutable SkMutex fSvgMutex;
mutable bool fParsedSvg = false;
mutable sk_sp<SkSVGDOM> fSvg;
SkString fName;
int fUpem;
const SkFontMetrics fFontMetrics;
std::unique_ptr<Glyph[]> fGlyphs;
int fGlyphCount;
skia_private::THashMap<SkUnichar, SkGlyphID> fCMap;
friend class SkTestSVGScalerContext;
#endif // SK_ENABLE_SVG
#endif // TestSVGTypeface_DEFINED