qt5base-lts/tests/auto/gui/text/qfontdatabase/tst_qfontdatabase.cpp
Eskil Abrahamsen Blomfeldt 34fa01be82 Fix tst_QFontDatabase::aliases failure with ambiguous font
If the first font in the families list happens to have been
disambiguated because of duplicates, two things went wrong:

1. hasFamily() would return false for the font family, because
it does not disambiguate when checking for the family name and
only checks if the families list contains the exact string.

2. Adding aliases to the full disambiguated string is not supported,
only the family name.

The first issue has been reported separately as QTBUG-89068.

The test failure is fixed by just avoiding the fonts that
are ambiguous in the test, as it really doesn't matter which
font we pick.

Fixes: QTBUG-89008
Pick-to: 5.15 6.0
Change-Id: I829778c2e7bb6090475c34dcf9cdce58862729d6
Reviewed-by: Liang Qi <liang.qi@qt.io>
2020-12-02 16:22:27 +00:00

474 lines
15 KiB
C++

/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the test suite of the Qt Toolkit.
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#include <QtTest/QtTest>
#include <qfontdatabase.h>
#include <qfontinfo.h>
#include <qfontmetrics.h>
#include <qtextlayout.h>
#include <private/qrawfont_p.h>
#include <qpa/qplatformfontdatabase.h>
Q_LOGGING_CATEGORY(lcTests, "qt.text.tests")
class tst_QFontDatabase : public QObject
{
Q_OBJECT
public:
tst_QFontDatabase();
private slots:
void initTestCase();
void styles_data();
void styles();
void fixedPitch_data();
void fixedPitch();
void systemFixedFont();
#ifdef Q_OS_MAC
void trickyFonts_data();
void trickyFonts();
#endif
void widthTwoTimes_data();
void widthTwoTimes();
void addAppFont_data();
void addAppFont();
void addTwoAppFontsFromFamily();
void aliases();
void fallbackFonts();
void condensedFontWidth();
void condensedFontWidthNoFontMerging();
void condensedFontMatching();
void rasterFonts();
void smoothFonts();
void registerOpenTypePreferredNamesSystem();
void registerOpenTypePreferredNamesApplication();
private:
QString m_ledFont;
QString m_testFont;
QString m_testFontCondensed;
QString m_testFontItalic;
};
tst_QFontDatabase::tst_QFontDatabase()
{
}
void tst_QFontDatabase::initTestCase()
{
m_ledFont = QFINDTESTDATA("LED_REAL.TTF");
m_testFont = QFINDTESTDATA("testfont.ttf");
m_testFontCondensed = QFINDTESTDATA("testfont_condensed.ttf");
m_testFontItalic = QFINDTESTDATA("testfont_italic.ttf");
QVERIFY(!m_ledFont.isEmpty());
QVERIFY(!m_testFont.isEmpty());
QVERIFY(!m_testFontCondensed.isEmpty());
QVERIFY(!m_testFontItalic.isEmpty());
}
void tst_QFontDatabase::styles_data()
{
QTest::addColumn<QString>("font");
QTest::newRow( "data0" ) << QString( "Times New Roman" );
}
void tst_QFontDatabase::styles()
{
QFETCH( QString, font );
QStringList styles = QFontDatabase::styles( font );
QStringList::Iterator it = styles.begin();
while ( it != styles.end() ) {
QString style = *it;
QString trimmed = style.trimmed();
++it;
QCOMPARE(style, trimmed);
}
}
void tst_QFontDatabase::fixedPitch_data()
{
QTest::addColumn<QString>("font");
QTest::addColumn<bool>("fixedPitch");
QTest::newRow( "Times New Roman" ) << QString( "Times New Roman" ) << false;
QTest::newRow( "Arial" ) << QString( "Arial" ) << false;
QTest::newRow( "Andale Mono" ) << QString( "Andale Mono" ) << true;
QTest::newRow( "Courier" ) << QString( "Courier" ) << true;
QTest::newRow( "Courier New" ) << QString( "Courier New" ) << true;
#ifndef Q_OS_MAC
QTest::newRow( "Script" ) << QString( "Script" ) << false;
QTest::newRow( "Lucida Console" ) << QString( "Lucida Console" ) << true;
QTest::newRow( "DejaVu Sans" ) << QString( "DejaVu Sans" ) << false;
QTest::newRow( "DejaVu Sans Mono" ) << QString( "DejaVu Sans Mono" ) << true;
#else
QTest::newRow( "Menlo" ) << QString( "Menlo" ) << true;
QTest::newRow( "Monaco" ) << QString( "Monaco" ) << true;
#endif
}
void tst_QFontDatabase::fixedPitch()
{
QFETCH(QString, font);
QFETCH(bool, fixedPitch);
if (!QFontDatabase::families().contains(font))
QSKIP("Font not installed");
QCOMPARE(QFontDatabase::isFixedPitch(font), fixedPitch);
QFont qfont(font);
QFontInfo fi(qfont);
QCOMPARE(fi.fixedPitch(), fixedPitch);
}
void tst_QFontDatabase::systemFixedFont() // QTBUG-54623
{
QFont font = QFontDatabase::systemFont(QFontDatabase::FixedFont);
QFontInfo fontInfo(font);
bool fdbSaysFixed = QFontDatabase::isFixedPitch(fontInfo.family(), fontInfo.styleName());
qCDebug(lcTests) << "system fixed font is" << font << "really fixed?" << fdbSaysFixed << fontInfo.fixedPitch();
QVERIFY(fdbSaysFixed);
QVERIFY(fontInfo.fixedPitch());
}
#ifdef Q_OS_MAC
void tst_QFontDatabase::trickyFonts_data()
{
QTest::addColumn<QString>("font");
QTest::newRow( "Geeza Pro" ) << QString( "Geeza Pro" );
}
void tst_QFontDatabase::trickyFonts()
{
QFETCH(QString, font);
if (!QFontDatabase::families().contains(font))
QSKIP( "Font not installed");
QFont qfont(font);
QFontInfo fi(qfont);
QCOMPARE(fi.family(), font);
}
#endif
void tst_QFontDatabase::widthTwoTimes_data()
{
QTest::addColumn<QString>("font");
QTest::addColumn<int>("pixelSize");
QTest::addColumn<QString>("text");
QTest::newRow("Arial") << QString("Arial") << 1000 << QString("Some text");
}
void tst_QFontDatabase::widthTwoTimes()
{
QFETCH(QString, font);
QFETCH(int, pixelSize);
QFETCH(QString, text);
QFont f;
f.setFamily(font);
f.setPixelSize(pixelSize);
QFontMetrics fm(f);
int w1 = fm.horizontalAdvance(text, 0);
int w2 = fm.horizontalAdvance(text, 0);
QCOMPARE(w1, w2);
}
void tst_QFontDatabase::addAppFont_data()
{
QTest::addColumn<bool>("useMemoryFont");
QTest::newRow("font file") << false;
QTest::newRow("memory font") << true;
}
void tst_QFontDatabase::addAppFont()
{
QFETCH(bool, useMemoryFont);
QSignalSpy fontDbChangedSpy(QGuiApplication::instance(), SIGNAL(fontDatabaseChanged()));
const QStringList oldFamilies = QFontDatabase::families();
QVERIFY(!oldFamilies.isEmpty());
fontDbChangedSpy.clear();
int id;
if (useMemoryFont) {
QFile fontfile(m_ledFont);
fontfile.open(QIODevice::ReadOnly);
QByteArray fontdata = fontfile.readAll();
QVERIFY(!fontdata.isEmpty());
id = QFontDatabase::addApplicationFontFromData(fontdata);
} else {
id = QFontDatabase::addApplicationFont(m_ledFont);
}
#if defined(Q_OS_HPUX) && defined(QT_NO_FONTCONFIG)
// Documentation says that X11 systems that don't have fontconfig
// don't support application fonts.
QCOMPARE(id, -1);
return;
#endif
QCOMPARE(fontDbChangedSpy.count(), 1);
if (id == -1)
QSKIP("Skip the test since app fonts are not supported on this system");
const QStringList addedFamilies = QFontDatabase::applicationFontFamilies(id);
QVERIFY(!addedFamilies.isEmpty());
const QStringList newFamilies = QFontDatabase::families();
QVERIFY(!newFamilies.isEmpty());
QVERIFY(newFamilies.count() >= oldFamilies.count());
for (int i = 0; i < addedFamilies.count(); ++i) {
QString family = addedFamilies.at(i);
QVERIFY(newFamilies.contains(family));
QFont qfont(family);
QFontInfo fi(qfont);
QCOMPARE(fi.family(), family);
}
QVERIFY(QFontDatabase::removeApplicationFont(id));
QCOMPARE(fontDbChangedSpy.count(), 2);
QCOMPARE(QFontDatabase::families(), oldFamilies);
}
void tst_QFontDatabase::addTwoAppFontsFromFamily()
{
int regularId = QFontDatabase::addApplicationFont(m_testFont);
if (regularId == -1)
QSKIP("Skip the test since app fonts are not supported on this system");
int italicId = QFontDatabase::addApplicationFont(m_testFontItalic);
QVERIFY(italicId != -1);
QVERIFY(!QFontDatabase::applicationFontFamilies(regularId).isEmpty());
QVERIFY(!QFontDatabase::applicationFontFamilies(italicId).isEmpty());
QString regularFontName = QFontDatabase::applicationFontFamilies(regularId).first();
QString italicFontName = QFontDatabase::applicationFontFamilies(italicId).first();
QCOMPARE(regularFontName, italicFontName);
QFont italicFont = QFontDatabase::font(italicFontName,
QString::fromLatin1("Italic"), 14);
QVERIFY(italicFont.italic());
QFontDatabase::removeApplicationFont(regularId);
QFontDatabase::removeApplicationFont(italicId);
}
void tst_QFontDatabase::aliases()
{
const QStringList families = QFontDatabase::families();
QVERIFY(!families.isEmpty());
QString firstFont;
for (int i = 0; i < families.size(); ++i) {
if (!families.at(i).contains('[')) {
firstFont = families.at(i);
break;
}
}
if (firstFont.isEmpty())
QSKIP("Skipped because there are no unambiguous font families on the system.");
QVERIFY(QFontDatabase::hasFamily(firstFont));
const QString alias = QStringLiteral("AliasToFirstFont") + firstFont;
QVERIFY(!QFontDatabase::hasFamily(alias));
QPlatformFontDatabase::registerAliasToFontFamily(firstFont, alias);
QVERIFY(QFontDatabase::hasFamily(alias));
}
void tst_QFontDatabase::fallbackFonts()
{
QTextLayout layout;
QString s;
s.append(QChar(0x31));
s.append(QChar(0x05D0));
layout.setText(s);
layout.beginLayout();
layout.createLine();
layout.endLayout();
QList<QGlyphRun> runs = layout.glyphRuns(0, 1);
foreach (QGlyphRun run, runs) {
QRawFont rawFont = run.rawFont();
QVERIFY(rawFont.isValid());
QCOMPARE(run.glyphIndexes().size(), 1);
QVERIFY(run.glyphIndexes().at(0) != 0);
}
}
static QString testString()
{
return QStringLiteral("foo bar");
}
void tst_QFontDatabase::condensedFontWidthNoFontMerging()
{
int regularFontId = QFontDatabase::addApplicationFont(m_testFont);
int condensedFontId = QFontDatabase::addApplicationFont(m_testFontCondensed);
QVERIFY(!QFontDatabase::applicationFontFamilies(regularFontId).isEmpty());
QVERIFY(!QFontDatabase::applicationFontFamilies(condensedFontId).isEmpty());
QString regularFontName = QFontDatabase::applicationFontFamilies(regularFontId).first();
QString condensedFontName = QFontDatabase::applicationFontFamilies(condensedFontId).first();
QFont condensedFont1(condensedFontName);
if (regularFontName == condensedFontName)
condensedFont1.setStyleName(QStringLiteral("Condensed"));
condensedFont1.setStyleStrategy(QFont::PreferMatch);
QFont condensedFont2 = condensedFont1;
condensedFont2.setStyleStrategy(QFont::StyleStrategy(QFont::NoFontMerging | QFont::PreferMatch));
QCOMPARE(QFontMetricsF(condensedFont2).horizontalAdvance(QStringLiteral("foobar")),
QFontMetricsF(condensedFont1).horizontalAdvance(QStringLiteral("foobar")));
}
void tst_QFontDatabase::condensedFontWidth()
{
QFontDatabase::addApplicationFont(m_testFont);
QFontDatabase::addApplicationFont(m_testFontCondensed);
QVERIFY(QFontDatabase::hasFamily("QtBidiTestFont"));
if (!QFontDatabase::hasFamily("QtBidiTestFontCondensed"))
QSKIP("This platform doesn't support font sub-family names (QTBUG-55625)");
// Test we really get a condensed font, and a not renormalized one (QTBUG-48043):
QFont testFont("QtBidiTestFont");
QFont testFontCondensed("QtBidiTestFontCondensed");
QFontMetrics fmTF(testFont);
QFontMetrics fmTFC(testFontCondensed);
QVERIFY(fmTF.horizontalAdvance(testString()) > fmTFC.horizontalAdvance(testString()));
}
void tst_QFontDatabase::condensedFontMatching()
{
QFontDatabase::removeAllApplicationFonts();
QFontDatabase::addApplicationFont(m_testFontCondensed);
if (!QFontDatabase::hasFamily("QtBidiTestFont"))
QSKIP("This platform doesn't support preferred font family names (QTBUG-53478)");
QFontDatabase::addApplicationFont(m_testFont);
// Test we correctly get the condensed font using different font matching methods:
QFont tfcByStretch("QtBidiTestFont");
tfcByStretch.setStretch(QFont::Condensed);
QFont tfcByStyleName("QtBidiTestFont");
tfcByStyleName.setStyleName("Condensed");
#ifdef Q_OS_WIN
QEXPECT_FAIL("","No matching of sub-family by stretch on Windows", Continue);
#endif
#ifdef Q_OS_ANDROID
QEXPECT_FAIL("", "QTBUG-69216", Continue);
#endif
QCOMPARE(QFontMetrics(tfcByStretch).horizontalAdvance(testString()),
QFontMetrics(tfcByStyleName).horizontalAdvance(testString()));
if (!QFontDatabase::hasFamily("QtBidiTestFontCondensed"))
QSKIP("This platform doesn't support font sub-family names (QTBUG-55625)");
QFont tfcBySubfamilyName("QtBidiTestFontCondensed");
QCOMPARE(QFontMetrics(tfcByStyleName).horizontalAdvance(testString()),
QFontMetrics(tfcBySubfamilyName).horizontalAdvance(testString()));
}
void tst_QFontDatabase::rasterFonts()
{
QFont font(QLatin1String("Fixedsys"), 1000);
QFontInfo fontInfo(font);
if (fontInfo.family() != font.family())
QSKIP("Fixedsys font not available.");
QVERIFY(!QFontDatabase::isSmoothlyScalable(font.family()));
QVERIFY(fontInfo.pointSize() != font.pointSize());
}
void tst_QFontDatabase::smoothFonts()
{
QFont font(QLatin1String("Arial"), 1000);
QFontInfo fontInfo(font);
if (fontInfo.family() != font.family())
QSKIP("Arial font not available.");
// Smooth and bitmap scaling are mutually exclusive
QVERIFY(QFontDatabase::isSmoothlyScalable(font.family()));
QVERIFY(!QFontDatabase::isBitmapScalable(font.family()));
}
void tst_QFontDatabase::registerOpenTypePreferredNamesSystem()
{
// This font family was picked because it was the only one I had installed which showcased the
// problem
if (!QFontDatabase::hasFamily(QString::fromLatin1("Source Code Pro ExtraLight")))
QSKIP("Source Code Pro ExtraLight is not installed");
QStringList styles = QFontDatabase::styles(QString::fromLatin1("Source Code Pro"));
QVERIFY(styles.contains(QLatin1String("ExtraLight")));
}
void tst_QFontDatabase::registerOpenTypePreferredNamesApplication()
{
int id = QFontDatabase::addApplicationFont(QString::fromLatin1(":/testfont_open.otf"));
if (id == -1)
QSKIP("Skip the test since app fonts are not supported on this system");
QStringList styles = QFontDatabase::styles(QString::fromLatin1("QtBidiTestFont"));
QVERIFY(styles.contains(QLatin1String("Open")));
QFontDatabase::removeApplicationFont(id);
}
QTEST_MAIN(tst_QFontDatabase)
#include "tst_qfontdatabase.moc"