e5f9cfad7b
Bug: skia: Change-Id: I8453a6d607df4902cd05c5c9bc6162feda04ef9c Reviewed-on: https://skia-review.googlesource.com/c/182969 Reviewed-by: Mike Reed <reed@google.com> Commit-Queue: Mike Reed <reed@google.com> Auto-Submit: Mike Reed <reed@google.com>
317 lines
11 KiB
C++
317 lines
11 KiB
C++
/*
|
||
* Copyright 2012 Google Inc.
|
||
*
|
||
* Use of this source code is governed by a BSD-style license that can be
|
||
* found in the LICENSE file.
|
||
*/
|
||
|
||
#include "Resources.h"
|
||
#include "SkAutoMalloc.h"
|
||
#include "SkEndian.h"
|
||
#include "SkFont.h"
|
||
#include "SkFontStream.h"
|
||
#include "SkOSFile.h"
|
||
#include "SkPaint.h"
|
||
#include "SkStream.h"
|
||
#include "SkTypeface.h"
|
||
#include "Test.h"
|
||
|
||
//#define DUMP_TABLES
|
||
//#define DUMP_TTC_TABLES
|
||
|
||
#define kFontTableTag_head SkSetFourByteTag('h', 'e', 'a', 'd')
|
||
#define kFontTableTag_hhea SkSetFourByteTag('h', 'h', 'e', 'a')
|
||
#define kFontTableTag_maxp SkSetFourByteTag('m', 'a', 'x', 'p')
|
||
|
||
static const struct TagSize {
|
||
SkFontTableTag fTag;
|
||
size_t fSize;
|
||
} gKnownTableSizes[] = {
|
||
{ kFontTableTag_head, 54 },
|
||
{ kFontTableTag_hhea, 36 },
|
||
};
|
||
|
||
// Test that getUnitsPerEm() agrees with a direct lookup in the 'head' table
|
||
// (if that table is available).
|
||
static void test_unitsPerEm(skiatest::Reporter* reporter, const sk_sp<SkTypeface>& face) {
|
||
int nativeUPEM = face->getUnitsPerEm();
|
||
|
||
int tableUPEM = -1;
|
||
size_t size = face->getTableSize(kFontTableTag_head);
|
||
if (size) {
|
||
// unitsPerEm is at offset 18 into the 'head' table.
|
||
uint16_t rawUPEM;
|
||
face->getTableData(kFontTableTag_head, 18, sizeof(rawUPEM), &rawUPEM);
|
||
tableUPEM = SkEndian_SwapBE16(rawUPEM);
|
||
}
|
||
|
||
if (tableUPEM >= 0) {
|
||
REPORTER_ASSERT(reporter, tableUPEM == nativeUPEM);
|
||
}
|
||
}
|
||
|
||
// Test that countGlyphs() agrees with a direct lookup in the 'maxp' table
|
||
// (if that table is available).
|
||
static void test_countGlyphs(skiatest::Reporter* reporter, const sk_sp<SkTypeface>& face) {
|
||
int nativeGlyphs = face->countGlyphs();
|
||
|
||
int tableGlyphs = -1;
|
||
size_t size = face->getTableSize(kFontTableTag_maxp);
|
||
if (size) {
|
||
// glyphs is at offset 4 into the 'maxp' table.
|
||
uint16_t rawGlyphs;
|
||
face->getTableData(kFontTableTag_maxp, 4, sizeof(rawGlyphs), &rawGlyphs);
|
||
tableGlyphs = SkEndian_SwapBE16(rawGlyphs);
|
||
}
|
||
|
||
if (tableGlyphs >= 0) {
|
||
REPORTER_ASSERT(reporter, tableGlyphs == nativeGlyphs);
|
||
}
|
||
}
|
||
|
||
// 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);
|
||
|
||
int n2 = SkFontStream::GetTableTags(stream, ttcIndex, array.get());
|
||
REPORTER_ASSERT(reporter, n == n2);
|
||
|
||
for (int i = 0; i < n; ++i) {
|
||
#ifdef DUMP_TTC_TABLES
|
||
SkString str;
|
||
SkFontTableTag t = array[i];
|
||
str.appendUnichar((t >> 24) & 0xFF);
|
||
str.appendUnichar((t >> 16) & 0xFF);
|
||
str.appendUnichar((t >> 8) & 0xFF);
|
||
str.appendUnichar((t >> 0) & 0xFF);
|
||
SkDebugf("[%d:%d] '%s'\n", ttcIndex, i, str.c_str());
|
||
#endif
|
||
size_t size = SkFontStream::GetTableSize(stream, ttcIndex, array[i]);
|
||
for (size_t j = 0; j < SK_ARRAY_COUNT(gKnownTableSizes); ++j) {
|
||
if (gKnownTableSizes[j].fTag == array[i]) {
|
||
REPORTER_ASSERT(reporter, gKnownTableSizes[j].fSize == size);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
static void test_fontstream(skiatest::Reporter* reporter) {
|
||
std::unique_ptr<SkStreamAsset> stream(GetResourceAsStream("fonts/test.ttc"));
|
||
if (!stream) {
|
||
SkDebugf("Skipping FontHostTest::test_fontstream\n");
|
||
return;
|
||
}
|
||
|
||
int count = SkFontStream::CountTTCEntries(stream.get());
|
||
#ifdef DUMP_TTC_TABLES
|
||
SkDebugf("CountTTCEntries %d\n", count);
|
||
#endif
|
||
for (int i = 0; i < count; ++i) {
|
||
test_fontstream(reporter, stream.get(), i);
|
||
}
|
||
}
|
||
|
||
// Exercise this rare cmap format (platform 3, encoding 0)
|
||
static void test_symbolfont(skiatest::Reporter* reporter) {
|
||
auto tf = MakeResourceAsTypeface("fonts/SpiderSymbol.ttf");
|
||
if (tf) {
|
||
SkUnichar c = 0xf021;
|
||
uint16_t g = SkFont(tf).unicharToGlyph(c);
|
||
REPORTER_ASSERT(reporter, g == 3);
|
||
} else {
|
||
// not all platforms support data fonts, so we just note that failure
|
||
SkDebugf("Skipping FontHostTest::test_symbolfont\n");
|
||
}
|
||
}
|
||
|
||
static void test_tables(skiatest::Reporter* reporter, const sk_sp<SkTypeface>& face) {
|
||
if (false) { // avoid bit rot, suppress warning
|
||
SkFontID fontID = face->uniqueID();
|
||
REPORTER_ASSERT(reporter, fontID);
|
||
}
|
||
|
||
int count = face->countTables();
|
||
|
||
SkAutoTMalloc<SkFontTableTag> storage(count);
|
||
SkFontTableTag* tags = storage.get();
|
||
|
||
int count2 = face->getTableTags(tags);
|
||
REPORTER_ASSERT(reporter, count2 == count);
|
||
|
||
for (int i = 0; i < count; ++i) {
|
||
size_t size = face->getTableSize(tags[i]);
|
||
REPORTER_ASSERT(reporter, size > 0);
|
||
|
||
#ifdef DUMP_TABLES
|
||
char name[5];
|
||
name[0] = (tags[i] >> 24) & 0xFF;
|
||
name[1] = (tags[i] >> 16) & 0xFF;
|
||
name[2] = (tags[i] >> 8) & 0xFF;
|
||
name[3] = (tags[i] >> 0) & 0xFF;
|
||
name[4] = 0;
|
||
SkDebugf("%s %d\n", name, size);
|
||
#endif
|
||
|
||
for (size_t j = 0; j < SK_ARRAY_COUNT(gKnownTableSizes); ++j) {
|
||
if (gKnownTableSizes[j].fTag == tags[i]) {
|
||
REPORTER_ASSERT(reporter, gKnownTableSizes[j].fSize == size);
|
||
}
|
||
}
|
||
|
||
// do we get the same size from GetTableData and GetTableSize
|
||
{
|
||
SkAutoMalloc data(size);
|
||
size_t size2 = face->getTableData(tags[i], 0, size, data.get());
|
||
REPORTER_ASSERT(reporter, size2 == size);
|
||
}
|
||
}
|
||
}
|
||
|
||
static void test_tables(skiatest::Reporter* reporter) {
|
||
static const char* const gNames[] = {
|
||
nullptr, // default font
|
||
"Helvetica", "Arial",
|
||
"Times", "Times New Roman",
|
||
"Courier", "Courier New",
|
||
"Terminal", "MS Sans Serif",
|
||
"Hiragino Mincho ProN", "MS PGothic",
|
||
};
|
||
|
||
for (size_t i = 0; i < SK_ARRAY_COUNT(gNames); ++i) {
|
||
sk_sp<SkTypeface> face(SkTypeface::MakeFromName(gNames[i], SkFontStyle()));
|
||
if (face) {
|
||
#ifdef DUMP_TABLES
|
||
SkDebugf("%s\n", gNames[i]);
|
||
#endif
|
||
test_tables(reporter, face);
|
||
test_unitsPerEm(reporter, face);
|
||
test_countGlyphs(reporter, face);
|
||
test_charsToGlyphs(reporter, face);
|
||
}
|
||
}
|
||
}
|
||
|
||
/*
|
||
* Verifies that the advance values returned by generateAdvance and
|
||
* generateMetrics match.
|
||
*/
|
||
static void test_advances(skiatest::Reporter* reporter) {
|
||
static const char* const faces[] = {
|
||
nullptr, // default font
|
||
"Arial", "Times", "Times New Roman", "Helvetica", "Courier",
|
||
"Courier New", "Verdana", "monospace",
|
||
};
|
||
|
||
static const struct {
|
||
SkFontHinting hinting;
|
||
bool linear;
|
||
bool subpixel;
|
||
} settings[] = {
|
||
{ kNo_SkFontHinting, false, false },
|
||
{ kNo_SkFontHinting, true, false },
|
||
{ kNo_SkFontHinting, false, true },
|
||
{ kSlight_SkFontHinting, false, false },
|
||
{ kSlight_SkFontHinting, true, false },
|
||
{ kSlight_SkFontHinting, false, true },
|
||
{ kNormal_SkFontHinting, false, false },
|
||
{ kNormal_SkFontHinting, true, false },
|
||
{ kNormal_SkFontHinting, false, true },
|
||
};
|
||
|
||
static const struct {
|
||
SkScalar fScaleX;
|
||
SkScalar fSkewX;
|
||
} gScaleRec[] = {
|
||
{ SK_Scalar1, 0 },
|
||
{ SK_Scalar1/2, 0 },
|
||
// these two exercise obliquing (skew)
|
||
{ SK_Scalar1, -SK_Scalar1/4 },
|
||
{ SK_Scalar1/2, -SK_Scalar1/4 },
|
||
};
|
||
|
||
SkFont font;
|
||
char txt[] = "long.text.with.lots.of.dots.";
|
||
|
||
for (size_t i = 0; i < SK_ARRAY_COUNT(faces); i++) {
|
||
font.setTypeface(SkTypeface::MakeFromName(faces[i], SkFontStyle()));
|
||
|
||
for (size_t j = 0; j < SK_ARRAY_COUNT(settings); j++) {
|
||
font.setHinting(settings[j].hinting);
|
||
font.setLinearMetrics(settings[j].linear);
|
||
font.setSubpixel(settings[j].subpixel);
|
||
|
||
for (size_t k = 0; k < SK_ARRAY_COUNT(gScaleRec); ++k) {
|
||
font.setScaleX(gScaleRec[k].fScaleX);
|
||
font.setSkewX(gScaleRec[k].fSkewX);
|
||
|
||
SkRect bounds;
|
||
|
||
// For no hinting and light hinting this should take the
|
||
// optimized generateAdvance path.
|
||
SkScalar width1 = font.measureText(txt, strlen(txt), kUTF8_SkTextEncoding);
|
||
|
||
// Requesting the bounds forces a generateMetrics call.
|
||
SkScalar width2 = font.measureText(txt, strlen(txt), kUTF8_SkTextEncoding, &bounds);
|
||
|
||
// SkDebugf("Font: %s, generateAdvance: %f, generateMetrics: %f\n",
|
||
// faces[i], SkScalarToFloat(width1), SkScalarToFloat(width2));
|
||
|
||
REPORTER_ASSERT(reporter, width1 == width2);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
DEF_TEST(FontHost, reporter) {
|
||
test_tables(reporter);
|
||
test_fontstream(reporter);
|
||
test_advances(reporter);
|
||
test_symbolfont(reporter);
|
||
}
|
||
|
||
// need tests for SkStrSearch
|