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skia2/tests/FontMgrAndroidParserTest.cpp
Brian Osman 788b91678f Remove SkTMin and SkTMax 
Use std::min and std::max everywhere.

SkTPin still exists. We can't use std::clamp yet, and even when
we can, it has undefined behavior with NaN. SkTPin is written
to ensure that we return a value in the [lo, hi] range.

Change-Id: I506852a36e024ae405358d5078a872e2c77fa71e
Docs-Preview: https://skia.org/?cl=269357
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/269357
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: Mike Reed <reed@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
2020-02-07 18:40:09 +00:00

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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.
*/
#include "tests/Test.h"
#include "include/core/SkCanvas.h"
#include "include/core/SkFont.h"
#include "include/core/SkTypeface.h"
#include "include/ports/SkFontMgr_android.h"
#include "include/private/SkFixed.h"
#include "src/core/SkOSFile.h"
#include "src/ports/SkFontMgr_android_parser.h"
#include "tools/Resources.h"
#include "tools/flags/CommandLineFlags.h"
#include <cmath>
#include <cstdio>
DECLARE_bool(verboseFontMgr);
int CountFallbacks(SkTDArray<FontFamily*> fontFamilies) {
int countOfFallbackFonts = 0;
for (int i = 0; i < fontFamilies.count(); i++) {
if (fontFamilies[i]->fIsFallbackFont) {
countOfFallbackFonts++;
}
}
return countOfFallbackFonts;
}
//https://tools.ietf.org/html/rfc5234#appendix-B.1
static bool isALPHA(int c) {
return ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z');
}
//https://tools.ietf.org/html/rfc5234#appendix-B.1
static bool isDIGIT(int c) {
return ('0' <= c && c <= '9');
}
static void ValidateLoadedFonts(SkTDArray<FontFamily*> fontFamilies, const char* firstExpectedFile,
skiatest::Reporter* reporter) {
REPORTER_ASSERT(reporter, fontFamilies[0]->fNames.count() == 5);
REPORTER_ASSERT(reporter, !strcmp(fontFamilies[0]->fNames[0].c_str(), "sans-serif"));
REPORTER_ASSERT(reporter,
!strcmp(fontFamilies[0]->fFonts[0].fFileName.c_str(), firstExpectedFile));
REPORTER_ASSERT(reporter, !fontFamilies[0]->fIsFallbackFont);
// Check that the languages are all sane.
for (const auto& fontFamily : fontFamilies) {
for (const auto& lang : fontFamily->fLanguages) {
const SkString& langString = lang.getTag();
for (size_t i = 0; i < langString.size(); ++i) {
int c = langString[i];
REPORTER_ASSERT(reporter, isALPHA(c) || isDIGIT(c) || '-' == c);
}
}
}
// All file names in the test configuration files start with a capital letter.
// This is not a general requirement, but it is true of all the test configuration data.
// Verifying ensures the filenames have been read sanely and have not been 'sliced'.
for (int i = 0; i < fontFamilies.count(); ++i) {
FontFamily& family = *fontFamilies[i];
for (int j = 0; j < family.fFonts.count(); ++j) {
FontFileInfo& file = family.fFonts[j];
REPORTER_ASSERT(reporter, !file.fFileName.isEmpty() &&
file.fFileName[0] >= 'A' &&
file.fFileName[0] <= 'Z');
}
}
}
static void DumpFiles(const FontFamily& fontFamily) {
for (int j = 0; j < fontFamily.fFonts.count(); ++j) {
const FontFileInfo& ffi = fontFamily.fFonts[j];
SkDebugf(" file (%d) %s#%d", ffi.fWeight, ffi.fFileName.c_str(), ffi.fIndex);
for (const auto& coordinate : ffi.fVariationDesignPosition) {
SkDebugf(" @'%c%c%c%c'=%f",
(coordinate.axis >> 24) & 0xFF,
(coordinate.axis >> 16) & 0xFF,
(coordinate.axis >> 8) & 0xFF,
(coordinate.axis ) & 0xFF,
coordinate.value);
}
SkDebugf("\n");
}
}
static void DumpLoadedFonts(SkTDArray<FontFamily*> fontFamilies, const char* label) {
if (!FLAGS_verboseFontMgr) {
return;
}
SkDebugf("\n--- Dumping %s\n", label);
for (int i = 0; i < fontFamilies.count(); ++i) {
SkDebugf("Family %d:\n", i);
switch(fontFamilies[i]->fVariant) {
case kElegant_FontVariant: SkDebugf(" elegant\n"); break;
case kCompact_FontVariant: SkDebugf(" compact\n"); break;
default: break;
}
SkDebugf(" basePath %s\n", fontFamilies[i]->fBasePath.c_str());
if (!fontFamilies[i]->fLanguages.empty()) {
SkDebugf(" language");
for (const auto& lang : fontFamilies[i]->fLanguages) {
SkDebugf(" %s", lang.getTag().c_str());
}
SkDebugf("\n");
}
for (int j = 0; j < fontFamilies[i]->fNames.count(); ++j) {
SkDebugf(" name %s\n", fontFamilies[i]->fNames[j].c_str());
}
DumpFiles(*fontFamilies[i]);
fontFamilies[i]->fallbackFamilies.foreach(
[](SkString, std::unique_ptr<FontFamily>* fallbackFamily) {
SkDebugf(" Fallback for: %s\n", (*fallbackFamily)->fFallbackFor.c_str());
DumpFiles(*(*fallbackFamily).get());
}
);
}
SkDebugf("\n\n");
}
template <int N, typename T> static double test_parse_fixed_r(skiatest::Reporter* reporter,
double low, double high, double inc)
{
double SK_FixedMax_double = nextafter(1 << (sizeof(T) * CHAR_BIT - N - 1), 0.0);
double SK_FixedEpsilon_double = (1.0 / (1 << N));
double maxError = 0;
char buffer[64];
for (double f = low; f < high; f += inc) {
SkString s;
// 'sprintf' formatting as expected depends on the current locale being "C".
// We currently expect tests and tools to run in the "C" locale.
sprintf(buffer, "%.20f", f);
T fix;
bool b = parse_fixed<N>(buffer, &fix);
if (b) {
double f2 = fix * SK_FixedEpsilon_double;
double error = fabs(f - f2);
REPORTER_ASSERT(reporter, error <= SK_FixedEpsilon_double);
maxError = std::max(maxError, error);
} else {
REPORTER_ASSERT(reporter, f < -SK_FixedMax_double || SK_FixedMax_double < f);
}
}
//SkDebugf("maxError: %.20f\n", maxError);
return maxError;
}
static void test_parse_fixed(skiatest::Reporter* reporter) {
test_parse_fixed_r<27, int32_t>(reporter, -8.1, -7.9, 0.000001);
test_parse_fixed_r<27, int32_t>(reporter, -0.1, 0.1, 0.000001);
test_parse_fixed_r<27, int32_t>(reporter, 7.9, 8.1, 0.000001);
test_parse_fixed_r<16, int32_t>(reporter, -0.125, 0.125, 1.0 / (1 << 19));
test_parse_fixed_r<16, int32_t>(reporter, -32768.125, -32766.875, 1.0 / (1 << 17));
test_parse_fixed_r<16, int32_t>(reporter, 32766.875, 32768.125, 1.0 / (1 << 17));
test_parse_fixed_r<16, int32_t>(reporter, -1.1, 1.1, 0.0001);
SkFixed fix;
REPORTER_ASSERT(reporter, !parse_fixed<27>("-17.1", &fix));
REPORTER_ASSERT(reporter, !parse_fixed<16>("32768", &fix));
REPORTER_ASSERT(reporter, !parse_fixed<16>("", &fix));
REPORTER_ASSERT(reporter, !parse_fixed<16>(".", &fix));
REPORTER_ASSERT(reporter, !parse_fixed<16>("123.", &fix));
REPORTER_ASSERT(reporter, !parse_fixed<16>("a", &fix));
REPORTER_ASSERT(reporter, !parse_fixed<16>(".123a", &fix));
}
DEF_TEST(FontMgrAndroidParser, reporter) {
test_parse_fixed(reporter);
bool resourcesMissing = false;
SkTDArray<FontFamily*> preV17FontFamilies;
SkFontMgr_Android_Parser::GetCustomFontFamilies(preV17FontFamilies,
SkString("/custom/font/path/"),
GetResourcePath("android_fonts/pre_v17/system_fonts.xml").c_str(),
GetResourcePath("android_fonts/pre_v17/fallback_fonts.xml").c_str());
if (preV17FontFamilies.count() > 0) {
REPORTER_ASSERT(reporter, preV17FontFamilies.count() == 14);
REPORTER_ASSERT(reporter, CountFallbacks(preV17FontFamilies) == 10);
DumpLoadedFonts(preV17FontFamilies, "pre version 17");
ValidateLoadedFonts(preV17FontFamilies, "Roboto-Regular.ttf", reporter);
} else {
resourcesMissing = true;
}
preV17FontFamilies.deleteAll();
SkTDArray<FontFamily*> v17FontFamilies;
SkFontMgr_Android_Parser::GetCustomFontFamilies(v17FontFamilies,
SkString("/custom/font/path/"),
GetResourcePath("android_fonts/v17/system_fonts.xml").c_str(),
GetResourcePath("android_fonts/v17/fallback_fonts.xml").c_str(),
GetResourcePath("android_fonts/v17").c_str());
if (v17FontFamilies.count() > 0) {
REPORTER_ASSERT(reporter, v17FontFamilies.count() == 56);
REPORTER_ASSERT(reporter, CountFallbacks(v17FontFamilies) == 46);
DumpLoadedFonts(v17FontFamilies, "version 17");
ValidateLoadedFonts(v17FontFamilies, "Roboto-Regular.ttf", reporter);
} else {
resourcesMissing = true;
}
v17FontFamilies.deleteAll();
SkTDArray<FontFamily*> v22FontFamilies;
SkFontMgr_Android_Parser::GetCustomFontFamilies(v22FontFamilies,
SkString("/custom/font/path/"),
GetResourcePath("android_fonts/v22/fonts.xml").c_str(),
nullptr);
if (v22FontFamilies.count() > 0) {
REPORTER_ASSERT(reporter, v22FontFamilies.count() == 54);
REPORTER_ASSERT(reporter, CountFallbacks(v22FontFamilies) == 42);
DumpLoadedFonts(v22FontFamilies, "version 22");
ValidateLoadedFonts(v22FontFamilies, "Roboto-Thin.ttf", reporter);
} else {
resourcesMissing = true;
}
v22FontFamilies.deleteAll();
if (resourcesMissing) {
SkDebugf("---- Resource files missing for FontConfigParser test\n");
}
}
DEF_TEST(FontMgrAndroidLegacyMakeTypeface, reporter) {
constexpr char fontsXmlFilename[] = "fonts/fonts.xml";
SkString basePath = GetResourcePath("fonts/");
SkString fontsXml = GetResourcePath(fontsXmlFilename);
if (!sk_exists(fontsXml.c_str())) {
ERRORF(reporter, "file missing: %s\n", fontsXmlFilename);
return;
}
SkFontMgr_Android_CustomFonts custom;
custom.fSystemFontUse = SkFontMgr_Android_CustomFonts::kOnlyCustom;
custom.fBasePath = basePath.c_str();
custom.fFontsXml = fontsXml.c_str();
custom.fFallbackFontsXml = nullptr;
custom.fIsolated = false;
sk_sp<SkFontMgr> fm(SkFontMgr_New_Android(&custom));
sk_sp<SkTypeface> t(fm->legacyMakeTypeface("non-existent-font", SkFontStyle()));
REPORTER_ASSERT(reporter, nullptr == t);
}
static bool bitmap_compare(const SkBitmap& ref, const SkBitmap& test) {
for (int y = 0; y < test.height(); ++y) {
for (int x = 0; x < test.width(); ++x) {
SkColor testColor = test.getColor(x, y);
SkColor refColor = ref.getColor(x, y);
if (refColor != testColor) {
return false;
}
}
}
return true;
}
DEF_TEST(FontMgrAndroidSystemVariableTypeface, reporter) {
constexpr char fontsXmlFilename[] = "fonts/fonts.xml";
SkString basePath = GetResourcePath("fonts/");
SkString fontsXml = GetResourcePath(fontsXmlFilename);
if (!sk_exists(fontsXml.c_str())) {
ERRORF(reporter, "file missing: %s\n", fontsXmlFilename);
return;
}
SkFontMgr_Android_CustomFonts custom;
custom.fSystemFontUse = SkFontMgr_Android_CustomFonts::kOnlyCustom;
custom.fBasePath = basePath.c_str();
custom.fFontsXml = fontsXml.c_str();
custom.fFallbackFontsXml = nullptr;
custom.fIsolated = false;
sk_sp<SkFontMgr> fontMgr(SkFontMgr_New_Android(&custom));
// "sans-serif" in "fonts/fonts.xml" is "fonts/Distortable.ttf"
sk_sp<SkTypeface> typeface(fontMgr->legacyMakeTypeface("sans-serif", SkFontStyle()));
SkBitmap bitmapStream;
bitmapStream.allocN32Pixels(64, 64);
SkCanvas canvasStream(bitmapStream);
canvasStream.drawColor(SK_ColorWHITE);
SkBitmap bitmapClone;
bitmapClone.allocN32Pixels(64, 64);
SkCanvas canvasClone(bitmapClone);
canvasStream.drawColor(SK_ColorWHITE);
SkPaint paint;
paint.setColor(SK_ColorGRAY);
paint.setAntiAlias(true);
constexpr float kTextSize = 20;
std::unique_ptr<SkStreamAsset> distortableStream(
GetResourceAsStream("fonts/Distortable.ttf"));
if (!distortableStream) {
return;
}
SkPoint point = SkPoint::Make(20.0f, 20.0f);
SkFourByteTag tag = SkSetFourByteTag('w', 'g', 'h', 't');
for (int i = 0; i < 10; ++i) {
SkScalar styleValue =
SkDoubleToScalar(0.5 + i * ((2.0 - 0.5) / 10));
SkFontArguments::VariationPosition::Coordinate
coordinates[] = {{tag, styleValue}};
SkFontArguments::VariationPosition
position = {coordinates, SK_ARRAY_COUNT(coordinates)};
SkFont fontStream(
fontMgr->makeFromStream(distortableStream->duplicate(),
SkFontArguments().setVariationDesignPosition(position)),
kTextSize);
fontStream.setEdging(SkFont::Edging::kSubpixelAntiAlias);
SkFont fontClone(
typeface->makeClone(SkFontArguments().setVariationDesignPosition(position)), kTextSize);
fontClone.setEdging(SkFont::Edging::kSubpixelAntiAlias);
constexpr char text[] = "abc";
canvasStream.drawColor(SK_ColorWHITE);
canvasStream.drawString(text, point.fX, point.fY, fontStream, paint);
canvasClone.drawColor(SK_ColorWHITE);
canvasClone.drawString(text, point.fX, point.fY, fontClone, paint);
bool success = bitmap_compare(bitmapStream, bitmapClone);
REPORTER_ASSERT(reporter, success);
}
}
DEF_TEST(FontMgrAndroidSystemFallbackFor, reporter) {
constexpr char fontsXmlFilename[] = "fonts/fonts.xml";
SkString basePath = GetResourcePath("fonts/");
SkString fontsXml = GetResourcePath(fontsXmlFilename);
if (!sk_exists(fontsXml.c_str())) {
ERRORF(reporter, "file missing: %s\n", fontsXmlFilename);
return;
}
SkFontMgr_Android_CustomFonts custom;
custom.fSystemFontUse = SkFontMgr_Android_CustomFonts::kOnlyCustom;
custom.fBasePath = basePath.c_str();
custom.fFontsXml = fontsXml.c_str();
custom.fFallbackFontsXml = nullptr;
custom.fIsolated = false;
sk_sp<SkFontMgr> fontMgr(SkFontMgr_New_Android(&custom));
// "sans-serif" in "fonts/fonts.xml" is "fonts/Distortable.ttf", which doesn't have a '!'
// but "TestTTC" has a bold font which does have '!' and is marked as fallback for "sans-serif"
// and should take precedence over the same font marked as normal weight next to it.
sk_sp<SkTypeface> typeface(fontMgr->matchFamilyStyleCharacter(
"sans-serif", SkFontStyle(), nullptr, 0, '!'));
REPORTER_ASSERT(reporter, typeface->fontStyle() == SkFontStyle::Bold());
}
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