skia2/tests/TypefaceTest.cpp

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/*
* Copyright 2013 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkRefCnt.h"
#include "SkTypeface.h"
#include "SkTypefaceCache.h"
#include "Test.h"
DEF_TEST(Typeface, reporter) {
sk_sp<SkTypeface> t1(SkTypeface::MakeFromName(nullptr, SkFontStyle()));
sk_sp<SkTypeface> t2(SkTypeface::MakeDefault(SkTypeface::kNormal));
REPORTER_ASSERT(reporter, SkTypeface::Equal(t1.get(), t2.get()));
REPORTER_ASSERT(reporter, SkTypeface::Equal(0, t1.get()));
REPORTER_ASSERT(reporter, SkTypeface::Equal(0, t2.get()));
REPORTER_ASSERT(reporter, SkTypeface::Equal(t1.get(), 0));
REPORTER_ASSERT(reporter, SkTypeface::Equal(t2.get(), 0));
#ifdef SK_BUILD_FOR_ANDROID
sk_sp<SkTypeface> t3(SkTypeface::MakeFromName("non-existent-font", SkFontStyle()));
REPORTER_ASSERT(reporter, nullptr == t3);
#endif
}
namespace {
class SkEmptyTypeface : public SkTypeface {
public:
static sk_sp<SkTypeface> Create() { return sk_sp<SkTypeface>(new SkEmptyTypeface()); }
protected:
SkEmptyTypeface() : SkTypeface(SkFontStyle(), true) { }
SkStreamAsset* onOpenStream(int* ttcIndex) const override { return nullptr; }
SkScalerContext* onCreateScalerContext(const SkScalerContextEffects&,
const SkDescriptor*) const override {
return nullptr;
}
void onFilterRec(SkScalerContextRec*) const override { }
virtual SkAdvancedTypefaceMetrics* onGetAdvancedTypefaceMetrics(
PerGlyphInfo,
const uint32_t*, uint32_t) const override { return nullptr; }
void onGetFontDescriptor(SkFontDescriptor*, bool*) const override { }
virtual int onCharsToGlyphs(const void* chars, Encoding encoding,
uint16_t glyphs[], int glyphCount) const override {
SK_ABORT("unimplemented");
return 0;
}
int onCountGlyphs() const override { return 0; };
int onGetUPEM() const override { return 0; };
void onGetFamilyName(SkString* familyName) const override { familyName->reset(); }
SkTypeface::LocalizedStrings* onCreateFamilyNameIterator() const override {
SK_ABORT("unimplemented");
return nullptr;
};
int onGetTableTags(SkFontTableTag tags[]) const override { return 0; }
size_t onGetTableData(SkFontTableTag, size_t, size_t, void*) const override { return 0; }
};
}
static bool count_proc(SkTypeface* face, void* ctx) {
int* count = static_cast<int*>(ctx);
*count = *count + 1;
return false;
}
static int count(skiatest::Reporter* reporter, const SkTypefaceCache& cache) {
int count = 0;
SkTypeface* none = cache.findByProcAndRef(count_proc, &count);
REPORTER_ASSERT(reporter, none == nullptr);
return count;
}
DEF_TEST(TypefaceCache, reporter) {
sk_sp<SkTypeface> t1(SkEmptyTypeface::Create());
{
SkTypefaceCache cache;
REPORTER_ASSERT(reporter, count(reporter, cache) == 0);
{
sk_sp<SkTypeface> t0(SkEmptyTypeface::Create());
cache.add(t0.get());
REPORTER_ASSERT(reporter, count(reporter, cache) == 1);
cache.add(t1.get());
REPORTER_ASSERT(reporter, count(reporter, cache) == 2);
cache.purgeAll();
REPORTER_ASSERT(reporter, count(reporter, cache) == 2);
}
REPORTER_ASSERT(reporter, count(reporter, cache) == 2);
cache.purgeAll();
REPORTER_ASSERT(reporter, count(reporter, cache) == 1);
}
REPORTER_ASSERT(reporter, t1->unique());
}