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Simplify SkTypeface::charsToGlyphs API to require UTF32 input

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Change-Id: I486713c496c40103eef13fa6068ac4d69e32f606
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/207865
Commit-Queue: Ben Wagner <bungeman@google.com>
Reviewed-by: Ben Wagner <bungeman@google.com>
This commit is contained in:
Mike Reed 2019-04-16 11:37:38 -07:00 committed by Skia Commit-Bot
parent 78e5577492
commit fde841de44
27 changed files with 157 additions and 582 deletions
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2
bench/CmapBench.cpp
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@ -44,7 +44,7 @@ static void charsToGlyphs_proc(const Rec& r) {
SkTypeface* face = r.fFont.getTypefaceOrDefault();
for (int i = 0; i < r.fLoops; ++i) {
face->charsToGlyphs(r.fText, SkTypeface::kUTF32_Encoding, glyphs, r.fCount);
face->unicharsToGlyphs(r.fText, r.fCount, glyphs);
}
}

8
bench/TypefaceBench.cpp
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@ -8,7 +8,7 @@
#include <vector>
#include "Benchmark.h"
#include "SkFontTypes.h"
#include "SkFont.h"
#include "SkMakeUnique.h"
#include "SkTypeface.h"
#include "SkUTF.h"
@ -238,12 +238,12 @@ protected:
}
void onDraw(int loops, SkCanvas* canvas) override {
SkFont font(fTypeface);
// Do more loops to reduce variance.
for (int i = 0; i < loops * 3; ++i) {
for (auto& line : fLines) {
fTypeface->charsToGlyphs(line->utf.data(),
(SkTypeface::Encoding)fEncoding, fGlyphIds.data(),
line->glyphCount);
font.textToGlyphs(line->utf.data(), line->utf.size(), fEncoding,
fGlyphIds.data(), line->glyphCount);
}
}
}

4
gm/atlastext.cpp
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@ -33,12 +33,14 @@ static SkScalar draw_string(SkAtlasTextTarget* target, const SkString& text, SkS
auto atlas_font = SkAtlasTextFont::Make(typeface, size);
int cnt = SkUTF::CountUTF8(text.c_str(), text.size());
std::unique_ptr<SkGlyphID[]> glyphs(new SkGlyphID[cnt]);
typeface->charsToGlyphs(text.c_str(), SkTypeface::Encoding::kUTF8_Encoding, glyphs.get(), cnt);
// Using a paint to get the positions for each glyph.
SkFont font;
font.setSize(size);
font.setTypeface(std::move(typeface));
font.textToGlyphs(text.c_str(), text.size(), SkTextEncoding::kUTF8, glyphs.get(), cnt);
std::unique_ptr<SkScalar[]> widths(new SkScalar[cnt]);
font.getWidths(glyphs.get(), cnt, widths.get());

2
include/core/SkFont.h
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@ -302,6 +302,8 @@ public:
*/
SkGlyphID unicharToGlyph(SkUnichar uni) const;
void unicharsToGlyphs(const SkUnichar uni[], int count, SkGlyphID glyphs[]) const;
/** Returns number of glyphs represented by text.
If encoding is kUTF8_SkTextEncoding, kUTF16_SkTextEncoding, or

5
include/core/SkFontTypes.h
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@ -9,8 +9,6 @@
#define SkFontTypes_DEFINED
#include "SkTypes.h"
// remove me once google3 uses IWYU
#include "SkTypeface.h"
enum class SkTextEncoding {
kUTF8, //!< uses bytes to represent UTF-8 or ASCII
@ -36,4 +34,7 @@ enum class SkFontHinting {
#define kNormal_SkFontHinting SkFontHinting::kNormal
#define kFull_SkFontHinting SkFontHinting::kFull
// remove me once google3 uses IWYU
#include "SkTypeface.h"
#endif

32
include/core/SkTypeface.h
View File

@ -14,6 +14,7 @@
#include "SkFontArguments.h"
#include "SkFontParameters.h"
#include "SkFontStyle.h"
#include "SkFontTypes.h"
#include "SkRect.h"
#include "SkString.h"
@ -176,36 +177,20 @@ public:
*/
static sk_sp<SkTypeface> MakeDeserialize(SkStream*);
enum Encoding : uint8_t {
kUTF8_Encoding,
kUTF16_Encoding,
kUTF32_Encoding
};
/**
* Given an array of character codes, of the specified encoding,
* optionally return their corresponding glyph IDs (if glyphs is not NULL).
* Given an array of UTF32 character codes, return their corresponding glyph IDs.
*
* @param chars pointer to the array of character codes
* @param encoding how the characters are encoded
* @param glyphs (optional) returns the corresponding glyph IDs for each
* character code, up to glyphCount values. If a character code is
* not found in the typeface, the corresponding glyph ID will be 0.
* @param glyphCount number of code points in 'chars' to process. If glyphs
* is not NULL, then it must point sufficient memory to write
* glyphCount values into it.
* @return the number of number of continuous non-zero glyph IDs computed
* from the beginning of chars. This value is valid, even if the
* glyphs parameter is NULL.
* @param chars pointer to the array of UTF32 chars
* @param number of chars and glyphs
* @param glyphs returns the corresponding glyph IDs for each character.
*/
int charsToGlyphs(const void* chars, Encoding encoding, SkGlyphID glyphs[],
int glyphCount) const;
void unicharsToGlyphs(const SkUnichar uni[], int count, SkGlyphID glyphs[]) const;
/**
* Return the glyphID that corresponds to the specified unicode code-point
* (in UTF32 encoding). If the unichar is not supported, returns 0.
*
* This is a short-cut for calling charsToGlyphs() with kUTF32_Encoding for one code-point.
* This is a short-cut for calling unicharsToGlyphs().
*/
SkGlyphID unicharToGlyph(SkUnichar unichar) const;
@ -393,8 +378,7 @@ protected:
virtual void onGetFontDescriptor(SkFontDescriptor*, bool* isLocal) const = 0;
virtual int onCharsToGlyphs(const void* chars, Encoding, SkGlyphID glyphs[],
int glyphCount) const = 0;
virtual void onCharsToGlyphs(const SkUnichar* chars, int count, SkGlyphID glyphs[]) const = 0;
virtual int onCountGlyphs() const = 0;
virtual int onGetUPEM() const = 0;

61
src/core/SkFont.cpp
View File

@ -170,6 +170,46 @@ SkGlyphID SkFont::unicharToGlyph(SkUnichar uni) const {
return this->getTypefaceOrDefault()->unicharToGlyph(uni);
}
void SkFont::unicharsToGlyphs(const SkUnichar uni[], int count, SkGlyphID glyphs[]) const {
this->getTypefaceOrDefault()->unicharsToGlyphs(uni, count, glyphs);
}
class SkConvertToUTF32 {
public:
SkConvertToUTF32() {}
const SkUnichar* convert(const void* text, size_t byteLength, SkTextEncoding encoding) {
const SkUnichar* uni;
switch (encoding) {
case SkTextEncoding::kUTF8: {
uni = fStorage.reset(byteLength);
const char* ptr = (const char*)text;
const char* end = ptr + byteLength;
for (int i = 0; ptr < end; ++i) {
fStorage[i] = SkUTF::NextUTF8(&ptr, end);
}
} break;
case SkTextEncoding::kUTF16: {
uni = fStorage.reset(byteLength);
const uint16_t* ptr = (const uint16_t*)text;
const uint16_t* end = ptr + (byteLength >> 1);
for (int i = 0; ptr < end; ++i) {
fStorage[i] = SkUTF::NextUTF16(&ptr, end);
}
} break;
case SkTextEncoding::kUTF32:
uni = (const SkUnichar*)text;
break;
default:
SK_ABORT("unexpected enum");
}
return uni;
}
private:
SkAutoSTMalloc<256, SkUnichar> fStorage;
};
int SkFont::textToGlyphs(const void* text, size_t byteLength, SkTextEncoding encoding,
SkGlyphID glyphs[], int maxGlyphCount) const {
if (0 == byteLength) {
@ -183,26 +223,15 @@ int SkFont::textToGlyphs(const void* text, size_t byteLength, SkTextEncoding enc
return count;
}
// TODO: unify/eliminate SkTypeface::Encoding with SkTextEncoding
SkTypeface::Encoding typefaceEncoding;
switch (encoding) {
case kUTF8_SkTextEncoding:
typefaceEncoding = SkTypeface::kUTF8_Encoding;
break;
case kUTF16_SkTextEncoding:
typefaceEncoding = SkTypeface::kUTF16_Encoding;
break;
case kUTF32_SkTextEncoding:
typefaceEncoding = SkTypeface::kUTF32_Encoding;
break;
default:
SkASSERT(kGlyphID_SkTextEncoding == encoding);
// we can early exit, since we already have glyphIDs
if (encoding == SkTextEncoding::kGlyphID) {
memcpy(glyphs, text, count << 1);
return count;
}
(void) this->getTypefaceOrDefault()->charsToGlyphs(text, typefaceEncoding, glyphs,count);
SkConvertToUTF32 storage;
const SkUnichar* uni = storage.convert(text, byteLength, encoding);
this->getTypefaceOrDefault()->unicharsToGlyphs(uni, count, glyphs);
return count;
}

27
src/core/SkTypeface.cpp
View File

@ -57,12 +57,8 @@ protected:
return nullptr;
}
void onGetFontDescriptor(SkFontDescriptor*, bool*) const override { }
virtual int onCharsToGlyphs(const void* chars, Encoding encoding,
uint16_t glyphs[], int glyphCount) const override {
if (glyphs && glyphCount > 0) {
sk_bzero(glyphs, glyphCount * sizeof(glyphs[0]));
}
return 0;
void onCharsToGlyphs(const SkUnichar* chars, int count, SkGlyphID glyphs[]) const override {
sk_bzero(glyphs, count * sizeof(glyphs[0]));
}
int onCountGlyphs() const override { return 0; }
int onGetUPEM() const override { return 0; }
@ -285,23 +281,16 @@ std::unique_ptr<SkFontData> SkTypeface::onMakeFontData() const {
return skstd::make_unique<SkFontData>(std::move(stream), index, nullptr, 0);
};
int SkTypeface::charsToGlyphs(const void* chars, Encoding encoding,
uint16_t glyphs[], int glyphCount) const {
if (glyphCount <= 0) {
return 0;
void SkTypeface::unicharsToGlyphs(const SkUnichar uni[], int count, SkGlyphID glyphs[]) const {
if (count > 0 && glyphs && uni) {
this->onCharsToGlyphs(uni, count, glyphs);
}
if (nullptr == chars || (unsigned)encoding > kUTF32_Encoding) {
if (glyphs) {
sk_bzero(glyphs, glyphCount * sizeof(glyphs[0]));
}
return 0;
}
return this->onCharsToGlyphs(chars, encoding, glyphs, glyphCount);
}
SkGlyphID SkTypeface::unicharToGlyph(SkUnichar uni) const {
SkGlyphID glyphs[1];
return this->onCharsToGlyphs(&uni, kUTF32_Encoding, glyphs, 1) == 1 ? glyphs[0] : 0;
SkGlyphID glyphs[1] = { 0 };
this->onCharsToGlyphs(&uni, 1, glyphs);
return glyphs[0];
}
int SkTypeface::countGlyphs() const {

4
src/core/SkTypeface_remote.h
View File

@ -122,10 +122,8 @@ protected:
SK_ABORT("Should never be called.");
return nullptr;
}
int onCharsToGlyphs(const void* chars, Encoding,
uint16_t glyphs[], int glyphCount) const override {
void onCharsToGlyphs(const SkUnichar* chars, int count, SkGlyphID glyphs[]) const override {
SK_ABORT("Should never be called.");
return 0;
}
int onCountGlyphs() const override {
return this->glyphCount();

19
src/core/SkUtils.h
View File

@ -9,7 +9,7 @@
#define SkUtils_DEFINED
#include "SkOpts.h"
#include "SkTypeface.h"
#include "SkFontTypes.h"
#include "../utils/SkUTF.h"
/** Similar to memset(), but it assigns a 16, 32, or 64-bit value into the buffer.
@ -42,23 +42,22 @@ static inline bool SkUTF16_IsTrailingSurrogate (uint16_t c) { return ((c) & 0xFC
///////////////////////////////////////////////////////////////////////////////
static inline int SkUTFN_CountUnichars(SkTypeface::Encoding enc, const void* utfN, size_t bytes) {
static inline int SkUTFN_CountUnichars(SkTextEncoding enc, const void* utfN, size_t bytes) {
switch (enc) {
case SkTypeface::kUTF8_Encoding: return SkUTF::CountUTF8((const char*)utfN, bytes);
case SkTypeface::kUTF16_Encoding: return SkUTF::CountUTF16((const uint16_t*)utfN, bytes);
case SkTypeface::kUTF32_Encoding: return SkUTF::CountUTF32((const int32_t*)utfN, bytes);
case SkTextEncoding::kUTF8: return SkUTF::CountUTF8((const char*)utfN, bytes);
case SkTextEncoding::kUTF16: return SkUTF::CountUTF16((const uint16_t*)utfN, bytes);
case SkTextEncoding::kUTF32: return SkUTF::CountUTF32((const int32_t*)utfN, bytes);
default: SkDEBUGFAIL("unknown text encoding"); return -1;
}
}
static inline SkUnichar SkUTFN_Next(SkTypeface::Encoding enc,
const void** ptr, const void* stop) {
static inline SkUnichar SkUTFN_Next(SkTextEncoding enc, const void** ptr, const void* stop) {
switch (enc) {
case SkTypeface::kUTF8_Encoding:
case SkTextEncoding::kUTF8:
return SkUTF::NextUTF8((const char**)ptr, (const char*)stop);
case SkTypeface::kUTF16_Encoding:
case SkTextEncoding::kUTF16:
return SkUTF::NextUTF16((const uint16_t**)ptr, (const uint16_t*)stop);
case SkTypeface::kUTF32_Encoding:
case SkTextEncoding::kUTF32:
return SkUTF::NextUTF32((const int32_t**)ptr, (const int32_t*)stop);
default: SkDEBUGFAIL("unknown text encoding"); return -1;
}

57
src/ports/SkFontHost_FreeType.cpp
View File

@ -1551,62 +1551,17 @@ void SkScalerContext_FreeType::emboldenIfNeeded(FT_Face face, FT_GlyphSlot glyph
#include "SkUtils.h"
static SkUnichar next_utf8(const void** chars) {
return SkUTF8_NextUnichar((const char**)chars);
}
static SkUnichar next_utf16(const void** chars) {
return SkUTF16_NextUnichar((const uint16_t**)chars);
}
static SkUnichar next_utf32(const void** chars) {
const SkUnichar** uniChars = (const SkUnichar**)chars;
SkUnichar uni = **uniChars;
*uniChars += 1;
return uni;
}
typedef SkUnichar (*EncodingProc)(const void**);
static EncodingProc find_encoding_proc(SkTypeface::Encoding enc) {
static const EncodingProc gProcs[] = {
next_utf8, next_utf16, next_utf32
};
SkASSERT((size_t)enc < SK_ARRAY_COUNT(gProcs));
return gProcs[enc];
}
int SkTypeface_FreeType::onCharsToGlyphs(const void* chars, Encoding encoding,
uint16_t glyphs[], int glyphCount) const
{
void SkTypeface_FreeType::onCharsToGlyphs(const SkUnichar uni[], int count,
SkGlyphID glyphs[]) const {
AutoFTAccess fta(this);
FT_Face face = fta.face();
if (!face) {
if (glyphs) {
sk_bzero(glyphs, glyphCount * sizeof(glyphs[0]));
}
return 0;
sk_bzero(glyphs, count * sizeof(glyphs[0]));
return;
}
EncodingProc next_uni_proc = find_encoding_proc(encoding);
if (nullptr == glyphs) {
for (int i = 0; i < glyphCount; ++i) {
if (0 == FT_Get_Char_Index(face, next_uni_proc(&chars))) {
return i;
}
}
return glyphCount;
} else {
int first = glyphCount;
for (int i = 0; i < glyphCount; ++i) {
unsigned id = FT_Get_Char_Index(face, next_uni_proc(&chars));
glyphs[i] = SkToU16(id);
if (0 == id && i < first) {
first = i;
}
}
return first;
for (int i = 0; i < count; ++i) {
glyphs[i] = SkToU16(FT_Get_Char_Index(face, uni[i]));
}
}

3
src/ports/SkFontHost_FreeType_common.h
View File

@ -102,8 +102,7 @@ protected:
int onGetUPEM() const override;
bool onGetKerningPairAdjustments(const uint16_t glyphs[], int count,
int32_t adjustments[]) const override;
int onCharsToGlyphs(const void* chars, Encoding, uint16_t glyphs[],
int glyphCount) const override;
void onCharsToGlyphs(const SkUnichar uni[], int count, SkGlyphID glyphs[]) const override;
int onCountGlyphs() const override;
LocalizedStrings* onCreateFamilyNameIterator() const override;

78
src/ports/SkFontHost_mac.cpp
View File

@ -742,8 +742,7 @@ protected:
void onGetFontDescriptor(SkFontDescriptor*, bool*) const override;
void getGlyphToUnicodeMap(SkUnichar*) const override;
std::unique_ptr<SkAdvancedTypefaceMetrics> onGetAdvancedMetrics() const override;
int onCharsToGlyphs(const void* chars, Encoding,
uint16_t glyphs[], int glyphCount) const override;
void onCharsToGlyphs(const SkUnichar* chars, int count, SkGlyphID glyphs[]) const override;
int onCountGlyphs() const override;
void* onGetCTFontRef() const override { return (void*)fFontRef.get(); }
@ -2333,9 +2332,7 @@ void SkTypeface_Mac::onGetFontDescriptor(SkFontDescriptor* desc,
*isLocalStream = fIsFromStream;
}
int SkTypeface_Mac::onCharsToGlyphs(const void* chars, Encoding encoding,
uint16_t glyphs[], int glyphCount) const
{
void SkTypeface_Mac::onCharsToGlyphs(const SkUnichar uni[], int count, SkGlyphID glyphs[]) const {
// Undocumented behavior of CTFontGetGlyphsForCharacters with non-bmp code points:
// When a surrogate pair is detected, the glyph index used is the index of the high surrogate.
// It is documented that if a mapping is unavailable, the glyph will be set to 0.
@ -2343,81 +2340,38 @@ int SkTypeface_Mac::onCharsToGlyphs(const void* chars, Encoding encoding,
SkAutoSTMalloc<1024, UniChar> charStorage;
const UniChar* src; // UniChar is a UTF-16 16-bit code unit.
int srcCount;
switch (encoding) {
case kUTF8_Encoding: {
const char* utf8 = reinterpret_cast<const char*>(chars);
UniChar* utf16 = charStorage.reset(2 * glyphCount);
const SkUnichar* utf32 = reinterpret_cast<const SkUnichar*>(uni);
UniChar* utf16 = charStorage.reset(2 * count);
src = utf16;
for (int i = 0; i < glyphCount; ++i) {
SkUnichar uni = SkUTF8_NextUnichar(&utf8);
utf16 += SkUTF::ToUTF16(uni, utf16);
}
srcCount = SkToInt(utf16 - src);
break;
}
case kUTF16_Encoding: {
src = reinterpret_cast<const UniChar*>(chars);
int extra = 0;
for (int i = 0; i < glyphCount; ++i) {
if (SkUTF16_IsLeadingSurrogate(src[i + extra])) {
++extra;
}
}
srcCount = glyphCount + extra;
break;
}
case kUTF32_Encoding: {
const SkUnichar* utf32 = reinterpret_cast<const SkUnichar*>(chars);
UniChar* utf16 = charStorage.reset(2 * glyphCount);
src = utf16;
for (int i = 0; i < glyphCount; ++i) {
for (int i = 0; i < count; ++i) {
utf16 += SkUTF::ToUTF16(utf32[i], utf16);
}
srcCount = SkToInt(utf16 - src);
break;
}
}
// If glyphs is nullptr, CT still needs glyph storage for finding the first failure.
// Also, if there are any non-bmp code points, the provided 'glyphs' storage will be inadequate.
// If there are any non-bmp code points, the provided 'glyphs' storage will be inadequate.
SkAutoSTMalloc<1024, uint16_t> glyphStorage;
uint16_t* macGlyphs = glyphs;
if (nullptr == macGlyphs || srcCount > glyphCount) {
if (srcCount > count) {
macGlyphs = glyphStorage.reset(srcCount);
}
bool allEncoded = CTFontGetGlyphsForCharacters(fFontRef.get(), src, macGlyphs, srcCount);
CTFontGetGlyphsForCharacters(fFontRef.get(), src, macGlyphs, srcCount);
// If there were any non-bmp, then copy and compact.
// If 'glyphs' is nullptr, then compact glyphStorage in-place.
// If all are bmp and 'glyphs' is non-nullptr, 'glyphs' already contains the compact glyphs.
// If some are non-bmp and 'glyphs' is non-nullptr, copy and compact into 'glyphs'.
uint16_t* compactedGlyphs = glyphs;
if (nullptr == compactedGlyphs) {
compactedGlyphs = macGlyphs;
}
if (srcCount > glyphCount) {
// If all are bmp, 'glyphs' already contains the compact glyphs.
// If some are non-bmp, copy and compact into 'glyphs'.
if (srcCount > count) {
SkASSERT(glyphs != macGlyphs);
int extra = 0;
for (int i = 0; i < glyphCount; ++i) {
compactedGlyphs[i] = macGlyphs[i + extra];
for (int i = 0; i < count; ++i) {
glyphs[i] = macGlyphs[i + extra];
if (SkUTF16_IsLeadingSurrogate(src[i + extra])) {
++extra;
}
}
} else {
SkASSERT(glyphs == macGlyphs);
}
if (allEncoded) {
return glyphCount;
}
// If we got false, then we need to manually look for first failure.
for (int i = 0; i < glyphCount; ++i) {
if (0 == compactedGlyphs[i]) {
return i;
}
}
// Odd to get here, as we expected CT to have returned true up front.
return glyphCount;
}
int SkTypeface_Mac::onCountGlyphs() const {

93
src/ports/SkFontHost_win.cpp
View File

@ -267,8 +267,7 @@ protected:
void getGlyphToUnicodeMap(SkUnichar*) const override;
std::unique_ptr<SkAdvancedTypefaceMetrics> onGetAdvancedMetrics() const override;
void onGetFontDescriptor(SkFontDescriptor*, bool*) const override;
int onCharsToGlyphs(const void* chars, Encoding encoding,
uint16_t glyphs[], int glyphCount) const override;
void onCharsToGlyphs(const SkUnichar* chars, int count, SkGlyphID glyphs[]) const override;
int onCountGlyphs() const override;
int onGetUPEM() const override;
void onGetFamilyName(SkString* familyName) const override;
@ -1917,8 +1916,8 @@ private:
};
#define SkAutoHDC(...) SK_REQUIRE_LOCAL_VAR(SkAutoHDC)
int LogFontTypeface::onCharsToGlyphs(const void* chars, Encoding encoding,
uint16_t userGlyphs[], int glyphCount) const
void LogFontTypeface::onCharsToGlyphs(const SkUnichar uni[], int glyphCount,
SkGlyphID glyphs[]) const
{
SkAutoHDC hdc(fLogFont);
@ -1931,83 +1930,11 @@ int LogFontTypeface::onCharsToGlyphs(const void* chars, Encoding encoding,
}
bool Ox1FHack = !(tm.tmPitchAndFamily & TMPF_VECTOR) /*&& winVer < Vista */;
SkAutoSTMalloc<256, uint16_t> scratchGlyphs;
uint16_t* glyphs;
if (userGlyphs != nullptr) {
glyphs = userGlyphs;
} else {
glyphs = scratchGlyphs.reset(glyphCount);
}
SCRIPT_CACHE sc = 0;
switch (encoding) {
case SkTypeface::kUTF8_Encoding: {
static const int scratchCount = 256;
WCHAR scratch[scratchCount];
int glyphIndex = 0;
const char* currentUtf8 = reinterpret_cast<const char*>(chars);
SkUnichar currentChar = 0;
if (glyphCount) {
currentChar = SkUTF8_NextUnichar(&currentUtf8);
}
while (glyphIndex < glyphCount) {
// Try a run of bmp.
int glyphsLeft = SkTMin(glyphCount - glyphIndex, scratchCount);
int runLength = 0;
while (runLength < glyphsLeft && currentChar <= 0xFFFF) {
scratch[runLength] = static_cast<WCHAR>(currentChar);
++runLength;
if (runLength < glyphsLeft) {
currentChar = SkUTF8_NextUnichar(&currentUtf8);
}
}
if (runLength) {
bmpCharsToGlyphs(hdc, scratch, runLength, &glyphs[glyphIndex], Ox1FHack);
glyphIndex += runLength;
}
// Try a run of non-bmp.
while (glyphIndex < glyphCount && currentChar > 0xFFFF) {
SkUTF::ToUTF16(currentChar, reinterpret_cast<uint16_t*>(scratch));
glyphs[glyphIndex] = nonBmpCharToGlyph(hdc, &sc, scratch);
++glyphIndex;
if (glyphIndex < glyphCount) {
currentChar = SkUTF8_NextUnichar(&currentUtf8);
}
}
}
break;
}
case SkTypeface::kUTF16_Encoding: {
int glyphIndex = 0;
const WCHAR* currentUtf16 = reinterpret_cast<const WCHAR*>(chars);
while (glyphIndex < glyphCount) {
// Try a run of bmp.
int glyphsLeft = glyphCount - glyphIndex;
int runLength = 0;
while (runLength < glyphsLeft && !SkUTF16_IsLeadingSurrogate(currentUtf16[runLength])) {
++runLength;
}
if (runLength) {
bmpCharsToGlyphs(hdc, currentUtf16, runLength, &glyphs[glyphIndex], Ox1FHack);
glyphIndex += runLength;
currentUtf16 += runLength;
}
// Try a run of non-bmp.
while (glyphIndex < glyphCount && SkUTF16_IsLeadingSurrogate(*currentUtf16)) {
glyphs[glyphIndex] = nonBmpCharToGlyph(hdc, &sc, currentUtf16);
++glyphIndex;
currentUtf16 += 2;
}
}
break;
}
case SkTypeface::kUTF32_Encoding: {
static const int scratchCount = 256;
WCHAR scratch[scratchCount];
int glyphIndex = 0;
const uint32_t* utf32 = reinterpret_cast<const uint32_t*>(chars);
const uint32_t* utf32 = reinterpret_cast<const uint32_t*>(uni);
while (glyphIndex < glyphCount) {
// Try a run of bmp.
int glyphsLeft = SkTMin(glyphCount - glyphIndex, scratchCount);
@ -2028,22 +1955,10 @@ int LogFontTypeface::onCharsToGlyphs(const void* chars, Encoding encoding,
++glyphIndex;
}
}
break;
}
default:
SK_ABORT("Invalid Text Encoding");
}
if (sc) {
::ScriptFreeCache(&sc);
}
for (int i = 0; i < glyphCount; ++i) {
if (0 == glyphs[i]) {
return i;
}
}
return glyphCount;
}
int LogFontTypeface::onCountGlyphs() const {

75
src/ports/SkTypeface_win_dw.cpp
View File

@ -52,78 +52,9 @@ void DWriteFontTypeface::onGetFontDescriptor(SkFontDescriptor* desc,
*isLocalStream = SkToBool(fDWriteFontFileLoader.get());
}
static SkUnichar next_utf8(const void** chars) {
return SkUTF8_NextUnichar((const char**)chars);
}
static SkUnichar next_utf16(const void** chars) {
return SkUTF16_NextUnichar((const uint16_t**)chars);
}
static SkUnichar next_utf32(const void** chars) {
const SkUnichar** uniChars = (const SkUnichar**)chars;
SkUnichar uni = **uniChars;
*uniChars += 1;
return uni;
}
typedef SkUnichar (*EncodingProc)(const void**);
static EncodingProc find_encoding_proc(SkTypeface::Encoding enc) {
static const EncodingProc gProcs[] = {
next_utf8, next_utf16, next_utf32
};
SkASSERT((size_t)enc < SK_ARRAY_COUNT(gProcs));
return gProcs[enc];
}
int DWriteFontTypeface::onCharsToGlyphs(const void* chars, Encoding encoding,
uint16_t glyphs[], int glyphCount) const
{
if (nullptr == glyphs) {
EncodingProc next_ucs4_proc = find_encoding_proc(encoding);
for (int i = 0; i < glyphCount; ++i) {
const SkUnichar c = next_ucs4_proc(&chars);
BOOL exists;
fDWriteFont->HasCharacter(c, &exists);
if (!exists) {
return i;
}
}
return glyphCount;
}
switch (encoding) {
case SkTypeface::kUTF8_Encoding:
case SkTypeface::kUTF16_Encoding: {
static const int scratchCount = 256;
UINT32 scratch[scratchCount];
EncodingProc next_ucs4_proc = find_encoding_proc(encoding);
for (int baseGlyph = 0; baseGlyph < glyphCount; baseGlyph += scratchCount) {
int glyphsLeft = glyphCount - baseGlyph;
int limit = SkTMin(glyphsLeft, scratchCount);
for (int i = 0; i < limit; ++i) {
scratch[i] = next_ucs4_proc(&chars);
}
fDWriteFontFace->GetGlyphIndices(scratch, limit, &glyphs[baseGlyph]);
}
break;
}
case SkTypeface::kUTF32_Encoding: {
const UINT32* utf32 = reinterpret_cast<const UINT32*>(chars);
fDWriteFontFace->GetGlyphIndices(utf32, glyphCount, glyphs);
break;
}
default:
SK_ABORT("Invalid Text Encoding");
}
for (int i = 0; i < glyphCount; ++i) {
if (0 == glyphs[i]) {
return i;
}
}
return glyphCount;
void DWriteFontTypeface::onCharsToGlyphs(const SkUnichar uni[], int count,
SkGlyphID glyphs[]) const {
fDWriteFontFace->GetGlyphIndices((const UINT32*)uni, count, glyphs);
}
int DWriteFontTypeface::onCountGlyphs() const {

3
src/ports/SkTypeface_win_dw.h
View File

@ -116,8 +116,7 @@ protected:
void getGlyphToUnicodeMap(SkUnichar* glyphToUnicode) const override;
std::unique_ptr<SkAdvancedTypefaceMetrics> onGetAdvancedMetrics() const override;
void onGetFontDescriptor(SkFontDescriptor*, bool*) const override;
int onCharsToGlyphs(const void* chars, Encoding encoding,
uint16_t glyphs[], int glyphCount) const override;
void onCharsToGlyphs(const SkUnichar* chars, int count, SkGlyphID glyphs[]) const override;
int onCountGlyphs() const override;
int onGetUPEM() const override;
void onGetFamilyName(SkString* familyName) const override;

45
tests/FontHostTest.cpp
View File

@ -69,50 +69,6 @@ static void test_countGlyphs(skiatest::Reporter* reporter, const sk_sp<SkTypefac
}
}
// The following three are all the same code points in various encodings.
// a中Яיו𝄞a𠮟
static uint8_t utf8Chars[] = { 0x61, 0xE4,0xB8,0xAD, 0xD0,0xAF, 0xD7,0x99, 0xD7,0x95, 0xF0,0x9D,0x84,0x9E, 0x61, 0xF0,0xA0,0xAE,0x9F };
static uint16_t utf16Chars[] = { 0x0061, 0x4E2D, 0x042F, 0x05D9, 0x05D5, 0xD834,0xDD1E, 0x0061, 0xD842,0xDF9F };
static uint32_t utf32Chars[] = { 0x00000061, 0x00004E2D, 0x0000042F, 0x000005D9, 0x000005D5, 0x0001D11E, 0x00000061, 0x00020B9F };
struct CharsToGlyphs_TestData {
const void* chars;
int charCount;
size_t charsByteLength;
SkTypeface::Encoding typefaceEncoding;
const char* name;
} static charsToGlyphs_TestData[] = {
{ utf8Chars, 8, sizeof(utf8Chars), SkTypeface::kUTF8_Encoding, "Simple UTF-8" },
{ utf16Chars, 8, sizeof(utf16Chars), SkTypeface::kUTF16_Encoding, "Simple UTF-16" },
{ utf32Chars, 8, sizeof(utf32Chars), SkTypeface::kUTF32_Encoding, "Simple UTF-32" },
};
// Test that SkPaint::textToGlyphs agrees with SkTypeface::charsToGlyphs.
static void test_charsToGlyphs(skiatest::Reporter* reporter, sk_sp<SkTypeface> face) {
uint16_t paintGlyphIds[256];
uint16_t faceGlyphIds[256];
for (size_t testIndex = 0; testIndex < SK_ARRAY_COUNT(charsToGlyphs_TestData); ++testIndex) {
CharsToGlyphs_TestData& test = charsToGlyphs_TestData[testIndex];
SkTextEncoding encoding = static_cast<SkTextEncoding>(test.typefaceEncoding);
SkFont font(face);
font.textToGlyphs(test.chars, test.charsByteLength, encoding,
paintGlyphIds, SK_ARRAY_COUNT(paintGlyphIds));
face->charsToGlyphs(test.chars, test.typefaceEncoding, faceGlyphIds, test.charCount);
for (int i = 0; i < test.charCount; ++i) {
SkString name;
face->getFamilyName(&name);
SkString a;
a.appendf("%s, paintGlyphIds[%d] = %d, faceGlyphIds[%d] = %d, face = %s",
test.name, i, (int)paintGlyphIds[i], i, (int)faceGlyphIds[i], name.c_str());
REPORTER_ASSERT(reporter, paintGlyphIds[i] == faceGlyphIds[i], a.c_str());
}
}
}
static void test_fontstream(skiatest::Reporter* reporter, SkStream* stream, int ttcIndex) {
int n = SkFontStream::GetTableTags(stream, ttcIndex, nullptr);
SkAutoTArray<SkFontTableTag> array(n);
@ -230,7 +186,6 @@ static void test_tables(skiatest::Reporter* reporter) {
test_tables(reporter, face);
test_unitsPerEm(reporter, face);
test_countGlyphs(reporter, face);
test_charsToGlyphs(reporter, face);
}
}
}

8
tests/FontMgrTest.cpp
View File

@ -136,12 +136,8 @@ static void test_matchStyleCSS3(skiatest::Reporter* reporter) {
return nullptr;
}
void onGetFontDescriptor(SkFontDescriptor*, bool*) const override { }
virtual int onCharsToGlyphs(const void* chars, Encoding encoding,
uint16_t glyphs[], int glyphCount) const override {
if (glyphs && glyphCount > 0) {
sk_bzero(glyphs, glyphCount * sizeof(glyphs[0]));
}
return 0;
void onCharsToGlyphs(const SkUnichar* chars, int count, SkGlyphID glyphs[]) const override {
sk_bzero(glyphs, count * sizeof(glyphs[0]));
}
int onCountGlyphs() const override { return 0; }
int onGetUPEM() const override { return 0; }

84
tests/PaintTest.cpp
View File

@ -21,90 +21,6 @@
#include "Test.h"
#undef ASSERT
static size_t uni_to_utf8(const SkUnichar src[], void* dst, int count) {
char* u8 = (char*)dst;
for (int i = 0; i < count; ++i) {
int n = SkToInt(SkUTF::ToUTF8(src[i], u8));
u8 += n;
}
return u8 - (char*)dst;
}
static size_t uni_to_utf16(const SkUnichar src[], void* dst, int count) {
uint16_t* u16 = (uint16_t*)dst;
for (int i = 0; i < count; ++i) {
int n = SkToInt(SkUTF::ToUTF16(src[i], u16));
u16 += n;
}
return (char*)u16 - (char*)dst;
}
static size_t uni_to_utf32(const SkUnichar src[], void* dst, int count) {
SkUnichar* u32 = (SkUnichar*)dst;
if (src != u32) {
memcpy(u32, src, count * sizeof(SkUnichar));
}
return count * sizeof(SkUnichar);
}
static int find_first_zero(const uint16_t glyphs[], int count) {
for (int i = 0; i < count; ++i) {
if (0 == glyphs[i]) {
return i;
}
}
return count;
}
DEF_TEST(Paint_cmap, reporter) {
// need to implement charsToGlyphs on other backends (e.g. linux, win)
// before we can run this tests everywhere
return;
static const int NGLYPHS = 64;
SkUnichar src[NGLYPHS];
SkUnichar dst[NGLYPHS]; // used for utf8, utf16, utf32 storage
static const struct {
size_t (*fSeedTextProc)(const SkUnichar[], void* dst, int count);
SkTextEncoding fEncoding;
} gRec[] = {
{ uni_to_utf8, kUTF8_SkTextEncoding },
{ uni_to_utf16, kUTF16_SkTextEncoding },
{ uni_to_utf32, kUTF32_SkTextEncoding },
};
SkRandom rand;
SkFont font;
font.setTypeface(SkTypeface::MakeDefault());
SkTypeface* face = font.getTypefaceOrDefault();
for (int i = 0; i < 1000; ++i) {
// generate some random text
for (int j = 0; j < NGLYPHS; ++j) {
src[j] = ' ' + j;
}
// inject some random chars, to sometimes abort early
src[rand.nextU() & 63] = rand.nextU() & 0xFFF;
for (size_t k = 0; k < SK_ARRAY_COUNT(gRec); ++k) {
size_t len = gRec[k].fSeedTextProc(src, dst, NGLYPHS);
uint16_t glyphs0[NGLYPHS], glyphs1[NGLYPHS];
int nglyphs = font.textToGlyphs(dst, len, gRec[k].fEncoding, glyphs0, NGLYPHS);
int first = face->charsToGlyphs(dst, (SkTypeface::Encoding)gRec[k].fEncoding,
glyphs1, NGLYPHS);
int index = find_first_zero(glyphs1, NGLYPHS);
REPORTER_ASSERT(reporter, NGLYPHS == nglyphs);
REPORTER_ASSERT(reporter, index == first);
REPORTER_ASSERT(reporter, 0 == memcmp(glyphs0, glyphs1, NGLYPHS * sizeof(uint16_t)));
}
}
}
// temparary api for bicubic, just be sure we can set/clear it
DEF_TEST(Paint_filterQuality, reporter) {
SkPaint p0, p1;

3
tests/SkRemoteGlyphCacheTest.cpp
View File

@ -496,7 +496,8 @@ sk_sp<SkTextBlob> make_blob_causing_fallback(
SkASSERT(runBuffer.utf8text == nullptr);
SkASSERT(runBuffer.clusters == nullptr);
glyphTf->charsToGlyphs(s, SkTypeface::kUTF8_Encoding, runBuffer.glyphs, runSize);
SkFont(sk_ref_sp(glyphTf)).textToGlyphs(s, strlen(s), SkTextEncoding::kUTF8,
runBuffer.glyphs, runSize);
SkRect glyphBounds;
font.getWidths(runBuffer.glyphs, 1, nullptr, &glyphBounds);

7
tools/fonts/RandomScalerContext.cpp
View File

@ -182,11 +182,8 @@ void SkRandomTypeface::onGetFontDescriptor(SkFontDescriptor* desc, bool* isLocal
fProxy->getFontDescriptor(desc, isLocal);
}
int SkRandomTypeface::onCharsToGlyphs(const void* chars,
Encoding encoding,
uint16_t glyphs[],
int glyphCount) const {
return fProxy->charsToGlyphs(chars, encoding, glyphs, glyphCount);
void SkRandomTypeface::onCharsToGlyphs(const SkUnichar* uni, int count, SkGlyphID glyphs[]) const {
fProxy->unicharsToGlyphs(uni, count, glyphs);
}
int SkRandomTypeface::onCountGlyphs() const { return fProxy->countGlyphs(); }

5
tools/fonts/RandomScalerContext.h
View File

@ -33,10 +33,7 @@ protected:
sk_sp<SkTypeface> onMakeClone(const SkFontArguments& args) const override;
void onGetFontDescriptor(SkFontDescriptor*, bool* isLocal) const override;
int onCharsToGlyphs(const void* chars,
Encoding encoding,
uint16_t glyphs[],
int glyphCount) const override;
void onCharsToGlyphs(const SkUnichar* chars, int count, SkGlyphID glyphs[]) const override;
int onCountGlyphs() const override;
int onGetUPEM() const override;

10
tools/fonts/TestEmptyTypeface.h
View File

@ -30,14 +30,8 @@ protected:
return nullptr;
}
void onGetFontDescriptor(SkFontDescriptor*, bool*) const override {}
virtual int onCharsToGlyphs(const void* chars,
Encoding encoding,
uint16_t glyphs[],
int glyphCount) const override {
if (glyphs && glyphCount > 0) {
sk_bzero(glyphs, glyphCount * sizeof(glyphs[0]));
}
return 0;
void onCharsToGlyphs(const SkUnichar* chars, int count, SkGlyphID glyphs[]) const override {
sk_bzero(glyphs, count * sizeof(glyphs[0]));
}
int onCountGlyphs() const override { return 0; }
int onGetUPEM() const override { return 0; }

22
tools/fonts/TestSVGTypeface.cpp
View File

@ -150,28 +150,12 @@ void TestSVGTypeface::onGetFontDescriptor(SkFontDescriptor* desc, bool* isLocal)
*isLocal = false;
}
int TestSVGTypeface::onCharsToGlyphs(const void* chars,
Encoding encoding,
uint16_t glyphs[],
int glyphCount) const {
auto utf8 = (const char*)chars;
auto utf16 = (const uint16_t*)chars;
auto utf32 = (const SkUnichar*)chars;
for (int i = 0; i < glyphCount; i++) {
SkUnichar ch;
switch (encoding) {
case kUTF8_Encoding: ch = SkUTF8_NextUnichar(&utf8); break;
case kUTF16_Encoding: ch = SkUTF16_NextUnichar(&utf16); break;
case kUTF32_Encoding: ch = *utf32++; break;
}
if (glyphs) {
SkGlyphID* g = fCMap.find(ch);
void TestSVGTypeface::onCharsToGlyphs(const SkUnichar uni[], int count, SkGlyphID glyphs[]) const {
for (int i = 0; i < count; i++) {
SkGlyphID* g = fCMap.find(uni[i]);
glyphs[i] = g ? *g : 0;
}
}
return glyphCount;
}
void TestSVGTypeface::onGetFamilyName(SkString* familyName) const { *familyName = fName; }

5
tools/fonts/TestSVGTypeface.h
View File

@ -94,10 +94,7 @@ protected:
void onGetFontDescriptor(SkFontDescriptor* desc, bool* isLocal) const override;
int onCharsToGlyphs(const void* chars,
Encoding encoding,
uint16_t glyphs[],
int glyphCount) const override;
void onCharsToGlyphs(const SkUnichar* chars, int count, SkGlyphID glyphs[]) const override;
int onCountGlyphs() const override { return fGlyphCount; }

22
tools/fonts/TestTypeface.cpp
View File

@ -132,26 +132,10 @@ void TestTypeface::onGetFontDescriptor(SkFontDescriptor* desc, bool* isLocal) co
*isLocal = false;
}
int TestTypeface::onCharsToGlyphs(const void* chars,
Encoding encoding,
SkGlyphID glyphs[],
int glyphCount) const {
auto utf8 = (const char*)chars;
auto utf16 = (const uint16_t*)chars;
auto utf32 = (const SkUnichar*)chars;
for (int i = 0; i < glyphCount; ++i) {
SkUnichar ch;
switch (encoding) {
case kUTF8_Encoding: ch = SkUTF8_NextUnichar(&utf8); break;
case kUTF16_Encoding: ch = SkUTF16_NextUnichar(&utf16); break;
case kUTF32_Encoding: ch = *utf32++; break;
void TestTypeface::onCharsToGlyphs(const SkUnichar uni[], int count, SkGlyphID glyphs[]) const {
for (int i = 0; i < count; ++i) {
glyphs[i] = fTestFont->glyphForUnichar(uni[i]);
}
if (glyphs) {
glyphs[i] = fTestFont->glyphForUnichar(ch);
}
}
return glyphCount;
}
void TestTypeface::onGetFamilyName(SkString* familyName) const { *familyName = fTestFont->fName; }

5
tools/fonts/TestTypeface.h
View File

@ -83,10 +83,7 @@ protected:
void onGetFontDescriptor(SkFontDescriptor* desc, bool* isLocal) const override;
int onCharsToGlyphs(const void* chars,
Encoding encoding,
uint16_t glyphs[],
int glyphCount) const override;
void onCharsToGlyphs(const SkUnichar* chars, int count, SkGlyphID glyphs[]) const override;
int onCountGlyphs() const override { return (int)fTestFont->fCharCodesCount; }