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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 "SkData.h"
#include "SkOTTable_OS_2.h"
#include "SkSFNTHeader.h"
#include "SkStream.h"
#include "SkRefCnt.h"
#include "SkTypeface.h"
#include "SkTypefaceCache.h"
#include "Resources.h"
#include "Test.h"
#include <memory>
static void TypefaceStyle_test(skiatest::Reporter* reporter,
uint16_t weight, uint16_t width, SkData* data)
{
sk_sp<SkData> dataCopy;
SkData* dataToUse = data;
if (!dataToUse->unique()) {
dataCopy = SkData::MakeWithCopy(data->data(), data->size());
dataToUse = dataCopy.get();
}
SkSFNTHeader* sfntHeader = static_cast<SkSFNTHeader*>(dataToUse->writable_data());
SkSFNTHeader::TableDirectoryEntry* tableEntry =
SkTAfter<SkSFNTHeader::TableDirectoryEntry>(sfntHeader);
SkSFNTHeader::TableDirectoryEntry* os2TableEntry = nullptr;
int numTables = SkEndian_SwapBE16(sfntHeader->numTables);
for (int tableEntryIndex = 0; tableEntryIndex < numTables; ++tableEntryIndex) {
if (SkOTTableOS2::TAG == tableEntry[tableEntryIndex].tag) {
os2TableEntry = tableEntry + tableEntryIndex;
break;
}
}
SkASSERT_RELEASE(os2TableEntry);
size_t os2TableOffset = SkEndian_SwapBE32(os2TableEntry->offset);
SkOTTableOS2_V0* os2Table = SkTAddOffset<SkOTTableOS2_V0>(sfntHeader, os2TableOffset);
os2Table->usWeightClass.value = SkEndian_SwapBE16(weight);
using WidthType = SkOTTableOS2_V0::WidthClass::Value;
os2Table->usWidthClass.value = static_cast<WidthType>(SkEndian_SwapBE16(width));
sk_sp<SkTypeface> newTypeface(SkTypeface::MakeFromStream(new SkMemoryStream(dataToUse)));
SkASSERT_RELEASE(newTypeface);
SkFontStyle newStyle = newTypeface->fontStyle();
//printf("%d, %f\n", weight, (newStyle.weight() - (float)0x7FFF) / (float)0x7FFF);
//printf("%d, %f\n", width , (newStyle.width() - (float)0x7F) / (float)0x7F);
//printf("%d, %d\n", weight, newStyle.weight());
//printf("%d, %d\n", width , newStyle.width());
// Some back-ends (CG, GDI, DW) support OS/2 version A which uses 0 - 10 (but all differently).
REPORTER_ASSERT(reporter,
newStyle.weight() == weight ||
(weight <= 10 && newStyle.weight() == 100 * weight) ||
(weight == 4 && newStyle.weight() == 350) || // GDI weirdness
(weight == 5 && newStyle.weight() == 400) || // GDI weirdness
(weight == 0 && newStyle.weight() == 1) || // DW weirdness
(weight == 1000 && newStyle.weight() == 999) // DW weirdness
);
// Some back-ends (GDI) don't support width, ensure these always report 'medium'.
REPORTER_ASSERT(reporter,
newStyle.width() == width ||
newStyle.width() == 5);
}
DEF_TEST(TypefaceStyle, reporter) {
std::unique_ptr<SkStreamAsset> stream(GetResourceAsStream("/fonts/Em.ttf"));
if (!stream) {
REPORT_FAILURE(reporter, "/fonts/Em.ttf", SkString("Cannot load resource"));
return;
}
sk_sp<SkData> data(SkData::MakeFromStream(stream.get(), stream->getLength()));
using SkFS = SkFontStyle;
for (int weight = SkFS::kInvisible_Weight; weight <= SkFS::kExtraBlack_Weight; ++weight) {
TypefaceStyle_test(reporter, weight, 5, data.get());
}
for (int width = SkFS::kUltraCondensed_Width; width <= SkFS::kUltaExpanded_Width; ++width) {
TypefaceStyle_test(reporter, 400, width, data.get());
}
}
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());
}
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