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qt5base-lts/tests/auto/qfont/tst_qfont.cpp
Jiang Jiang 97391be5eb Allow selecting fonts with irregular style names 
Fonts like "Helvetica Neue UltraLight" or "Skia Regular Black
Condensed" can't be selected in Qt because either they don't
report correct numeric values for weight/stretch/etc. or these
values are not mapped from QFont enums in a linear way. Thus
we provide a shortcut to select these fonts with PostScript
name or full name without resorting to family name matching in
QFontDatabase (these fonts are not registered in font database
anyway). After this, we can simply use:

    QFont font("Helvetica Neue");
    font.setStyleName("UltraLight");

to select these fonts. QCoreTextFontEngineMulti matched like
this can be created directly from the CTFontRef instance
instead of creating from the font name, making this process
faster.

The commit also cleaned up the font loading process in Mac
font database a bit, moving the code for family matching into
a separate function.

Add QFontInfo::styleName() and QRawFont::styleName() to access
the resolved style name for a font.

Task-number: QTBUG-19366
Change-Id: Iad07768c02ed06cc8d6b7395dec554384f410506
Reviewed-on: http://codereview.qt.nokia.com/333
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Jiang Jiang <jiang.jiang@nokia.com>
2011-06-09 15:07:13 +02:00

630 lines
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/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the test suite of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this
** file. Please review the following information to ensure the GNU Lesser
** General Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtTest/QtTest>
#include <qfont.h>
#include <qfontdatabase.h>
#include <qfontinfo.h>
#include <qstringlist.h>
#include <qapplication.h>
#include <qwidget.h>
#include <qlist.h>
//TESTED_CLASS=
//TESTED_FILES=
class tst_QFont : public QObject
{
Q_OBJECT
public:
tst_QFont();
virtual ~tst_QFont();
public slots:
void init();
void cleanup();
private slots:
void getSetCheck();
void exactMatch();
void compare();
void resolve();
void resetFont();
void isCopyOf();
void setFontRaw();
void italicOblique();
void insertAndRemoveSubstitutions();
void serializeSpacing();
void lastResortFont();
void styleName();
};
// Testing get/set functions
void tst_QFont::getSetCheck()
{
QFont obj1;
// Style QFont::style()
// void QFont::setStyle(Style)
obj1.setStyle(QFont::Style(QFont::StyleNormal));
QCOMPARE(QFont::Style(QFont::StyleNormal), obj1.style());
obj1.setStyle(QFont::Style(QFont::StyleItalic));
QCOMPARE(QFont::Style(QFont::StyleItalic), obj1.style());
obj1.setStyle(QFont::Style(QFont::StyleOblique));
QCOMPARE(QFont::Style(QFont::StyleOblique), obj1.style());
// StyleStrategy QFont::styleStrategy()
// void QFont::setStyleStrategy(StyleStrategy)
obj1.setStyleStrategy(QFont::StyleStrategy(QFont::PreferDefault));
QCOMPARE(QFont::StyleStrategy(QFont::PreferDefault), obj1.styleStrategy());
obj1.setStyleStrategy(QFont::StyleStrategy(QFont::PreferBitmap));
QCOMPARE(QFont::StyleStrategy(QFont::PreferBitmap), obj1.styleStrategy());
obj1.setStyleStrategy(QFont::StyleStrategy(QFont::PreferDevice));
QCOMPARE(QFont::StyleStrategy(QFont::PreferDevice), obj1.styleStrategy());
obj1.setStyleStrategy(QFont::StyleStrategy(QFont::PreferOutline));
QCOMPARE(QFont::StyleStrategy(QFont::PreferOutline), obj1.styleStrategy());
obj1.setStyleStrategy(QFont::StyleStrategy(QFont::ForceOutline));
QCOMPARE(QFont::StyleStrategy(QFont::ForceOutline), obj1.styleStrategy());
obj1.setStyleStrategy(QFont::StyleStrategy(QFont::PreferMatch));
QCOMPARE(QFont::StyleStrategy(QFont::PreferMatch), obj1.styleStrategy());
obj1.setStyleStrategy(QFont::StyleStrategy(QFont::PreferQuality));
QCOMPARE(QFont::StyleStrategy(QFont::PreferQuality), obj1.styleStrategy());
obj1.setStyleStrategy(QFont::StyleStrategy(QFont::PreferAntialias));
QCOMPARE(QFont::StyleStrategy(QFont::PreferAntialias), obj1.styleStrategy());
obj1.setStyleStrategy(QFont::StyleStrategy(QFont::NoAntialias));
QCOMPARE(QFont::StyleStrategy(QFont::NoAntialias), obj1.styleStrategy());
obj1.setStyleStrategy(QFont::StyleStrategy(QFont::OpenGLCompatible));
QCOMPARE(QFont::StyleStrategy(QFont::OpenGLCompatible), obj1.styleStrategy());
}
tst_QFont::tst_QFont()
{
}
tst_QFont::~tst_QFont()
{
}
void tst_QFont::init()
{
// TODO: Add initialization code here.
// This will be executed immediately before each test is run.
}
void tst_QFont::cleanup()
{
// TODO: Add cleanup code here.
// This will be executed immediately after each test is run.
}
void tst_QFont::exactMatch()
{
QFont font;
// Check if a non-existing font hasn't an exact match
font = QFont( "BogusFont", 33 );
QVERIFY( !font.exactMatch() );
#ifdef Q_WS_WIN
QSKIP("Exact matching on windows misses a lot because of the sample chars", SkipAll);
return;
#endif
#ifdef Q_WS_X11
QVERIFY(QFont("sans").exactMatch());
QVERIFY(QFont("sans-serif").exactMatch());
QVERIFY(QFont("serif").exactMatch());
QVERIFY(QFont("monospace").exactMatch());
#endif
QSKIP("This test is bogus on Unix with support for font aliases in fontconfig", SkipAll);
return;
QFontDatabase fdb;
QList<QFontDatabase::WritingSystem> systems = fdb.writingSystems();
for (int system = 0; system < systems.count(); ++system) {
QStringList families = fdb.families(systems[system]);
if (families.isEmpty())
return;
QStringList::ConstIterator f_it, f_end = families.end();
for (f_it = families.begin(); f_it != f_end; ++f_it) {
const QString &family = *f_it;
if (family.contains('['))
continue;
QStringList styles = fdb.styles(family);
QVERIFY(!styles.isEmpty());
QStringList::ConstIterator s_it, s_end = styles.end();
for (s_it = styles.begin(); s_it != s_end; ++s_it) {
const QString &style = *s_it;
if (fdb.isSmoothlyScalable(family, style)) {
// smoothly scalable font... don't need to load every pointsize
font = fdb.font(family, style, 12);
QFontInfo fontinfo(font);
if (! fontinfo.exactMatch()) {
// Unfortunately, this can fail, since
// QFontDatabase does not fill in all font
// properties. Check to make sure that the
// test didn't fail for obvious reasons
if (fontinfo.family().isEmpty()
&& fontinfo.pointSize() == 0) {
// this is a box rendering engine... this can happen from
// time to time, especially on X11 with iso10646-1 or
// unknown font encodings
continue;
}
#ifdef Q_WS_WIN32
if (font.family().startsWith("MS ") || fontinfo.family().startsWith("MS ")) {
/* qDebug("Family matching skipped for MS-Alias font: %s, fontinfo: %s",
font.family().latin1(), fontinfo.family().latin1());
*/
} else
#endif
{
if (!(font.family() == fontinfo.family()
|| fontinfo.family().contains(font.family())
|| fontinfo.family().isEmpty())) {
qDebug("Test about to fail for font: %s, fontinfo: %s",
font.family().toLatin1().constData(),
fontinfo.family().toLatin1().constData());
}
QVERIFY(font.family() == fontinfo.family()
|| fontinfo.family().contains(font.family())
|| fontinfo.family().isEmpty());
}
if (font.pointSize() != -1) {
QVERIFY(font.pointSize() == fontinfo.pointSize());
} else {
QVERIFY(font.pixelSize() == fontinfo.pixelSize());
}
QVERIFY(font.italic() == fontinfo.italic());
if (font.weight() != fontinfo.weight()) {
qDebug("font is %s", font.toString().toLatin1().constData());
}
QVERIFY(font.weight() == fontinfo.weight());
} else {
font.setFixedPitch(!fontinfo.fixedPitch());
QFontInfo fontinfo1(font);
QVERIFY( !fontinfo1.exactMatch() );
font.setFixedPitch(fontinfo.fixedPitch());
QFontInfo fontinfo2(font);
QVERIFY( fontinfo2.exactMatch() );
}
}
#if 0
// ############## can only work if we have float point sizes in QFD
else {
QList<int> sizes = fdb.pointSizes(family, style);
QVERIFY(!sizes.isEmpty());
QList<int>::ConstIterator z_it, z_end = sizes.end();
for (z_it = sizes.begin(); z_it != z_end; ++z_it) {
const int size = *z_it;
// Initialize the font, and check if it is an exact match
font = fdb.font(family, style, size);
QFontInfo fontinfo(font, (QFont::Script) script);
if (! fontinfo.exactMatch()) {
// Unfortunately, this can fail, since
// QFontDatabase does not fill in all font
// properties. Check to make sure that the
// test didn't fail for obvious reasons
if (fontinfo.family().isEmpty()
&& fontinfo.pointSize() == 0) {
// this is a box rendering engine... this can happen from
// time to time, especially on X11 with iso10646-1 or
// unknown font encodings
continue;
}
// no need to skip MS-fonts here it seems
if (!(font.family() == fontinfo.family()
|| fontinfo.family().contains(font.family())
|| fontinfo.family().isEmpty())) {
qDebug("Test about to fail for font: %s, fontinfo: %s",
font.family().latin1(), fontinfo.family().latin1());
}
QVERIFY(font.family() == fontinfo.family()
|| fontinfo.family().contains(font.family())
|| fontinfo.family().isEmpty());
if (font.pointSize() != -1) {
QVERIFY(font.pointSize() == fontinfo.pointSize());
} else {
QVERIFY(font.pixelSize() == fontinfo.pixelSize());
}
QVERIFY(font.italic() == fontinfo.italic());
QVERIFY(font.weight() == fontinfo.weight());
} else {
font.setFixedPitch(!fontinfo.fixedPitch());
QFontInfo fontinfo1(font, (QFont::Script) script);
QVERIFY( !fontinfo1.exactMatch() );
font.setFixedPitch(fontinfo.fixedPitch());
QFontInfo fontinfo2(font, (QFont::Script) script);
QVERIFY( fontinfo2.exactMatch() );
}
}
}
#endif
}
}
}
}
void tst_QFont::italicOblique()
{
QFontDatabase fdb;
QStringList families = fdb.families();
if (families.isEmpty())
return;
QStringList::ConstIterator f_it, f_end = families.end();
for (f_it = families.begin(); f_it != f_end; ++f_it) {
QString family = *f_it;
QStringList styles = fdb.styles(family);
QVERIFY(!styles.isEmpty());
QStringList::ConstIterator s_it, s_end = styles.end();
for (s_it = styles.begin(); s_it != s_end; ++s_it) {
QString style = *s_it;
if (fdb.isSmoothlyScalable(family, style)) {
if (style.contains("Oblique")) {
style.replace("Oblique", "Italic");
} else if (style.contains("Italic")) {
style.replace("Italic", "Oblique");
} else {
continue;
}
QFont f = fdb.font(family, style, 12);
QVERIFY(f.italic());
}
}
}
}
void tst_QFont::compare()
{
QFont font;
{
QFont font2 = font;
font2.setPointSize( 24 );
QVERIFY( font != font2 );
QCOMPARE(font < font2,!(font2 < font));
}
{
QFont font2 = font;
font2.setPixelSize( 24 );
QVERIFY( font != font2 );
QCOMPARE(font < font2,!(font2 < font));
}
font.setPointSize(12);
font.setItalic(false);
font.setWeight(QFont::Normal);
font.setUnderline(false);
font.setStrikeOut(false);
font.setOverline(false);
{
QFont font2 = font;
font2.setPointSize( 24 );
QVERIFY( font != font2 );
QCOMPARE(font < font2,!(font2 < font));
}
{
QFont font2 = font;
font2.setPixelSize( 24 );
QVERIFY( font != font2 );
QCOMPARE(font < font2,!(font2 < font));
}
{
QFont font2 = font;
font2.setItalic(true);
QVERIFY( font != font2 );
QCOMPARE(font < font2,!(font2 < font));
font2.setItalic(false);
QVERIFY( font == font2 );
QVERIFY(!(font < font2));
font2.setWeight(QFont::Bold);
QVERIFY( font != font2 );
QCOMPARE(font < font2,!(font2 < font));
font2.setWeight(QFont::Normal);
QVERIFY( font == font2 );
QVERIFY(!(font < font2));
font.setUnderline(true);
QVERIFY( font != font2 );
QCOMPARE(font < font2,!(font2 < font));
font.setUnderline(false);
QVERIFY( font == font2 );
QVERIFY(!(font < font2));
font.setStrikeOut(true);
QVERIFY( font != font2 );
QCOMPARE(font < font2,!(font2 < font));
font.setStrikeOut(false);
QVERIFY( font == font2 );
QVERIFY(!(font < font2));
font.setOverline(true);
QVERIFY( font != font2 );
QCOMPARE(font < font2,!(font2 < font));
font.setOverline(false);
QVERIFY( font == font2 );
QVERIFY(!(font < font2));
font.setCapitalization(QFont::SmallCaps);
QVERIFY( font != font2 );
QCOMPARE(font < font2,!(font2 < font));
font.setCapitalization(QFont::MixedCase);
QVERIFY( font == font2 );
QVERIFY(!(font < font2));
}
#if defined(Q_WS_X11)
{
QFont font1, font2;
font1.setRawName("-Adobe-Helvetica-medium-r-normal--12-120-75-75-p-67-iso8859-1");
font2.setRawName("-Adobe-Helvetica-medium-r-normal--24-240-75-75-p-130-iso8859-1");
QVERIFY(font1 != font2);
}
#endif
}
void tst_QFont::resolve()
{
QFont font;
font.setPointSize(font.pointSize() * 2);
font.setItalic(false);
font.setWeight(QFont::Normal);
font.setUnderline(false);
font.setStrikeOut(false);
font.setOverline(false);
font.setStretch(QFont::Unstretched);
QFont font1;
font1.setWeight(QFont::Bold);
QFont font2 = font1.resolve(font);
QVERIFY(font2.weight() == font1.weight());
QVERIFY(font2.pointSize() == font.pointSize());
QVERIFY(font2.italic() == font.italic());
QVERIFY(font2.underline() == font.underline());
QVERIFY(font2.overline() == font.overline());
QVERIFY(font2.strikeOut() == font.strikeOut());
QVERIFY(font2.stretch() == font.stretch());
QFont font3;
font3.setStretch(QFont::UltraCondensed);
QFont font4 = font3.resolve(font1).resolve(font);
QVERIFY(font4.stretch() == font3.stretch());
QVERIFY(font4.weight() == font.weight());
QVERIFY(font4.pointSize() == font.pointSize());
QVERIFY(font4.italic() == font.italic());
QVERIFY(font4.underline() == font.underline());
QVERIFY(font4.overline() == font.overline());
QVERIFY(font4.strikeOut() == font.strikeOut());
QFont f1,f2,f3;
f2.setPointSize(45);
f3.setPointSize(55);
QFont f4 = f1.resolve(f2);
QCOMPARE(f4.pointSize(), 45);
f4 = f4.resolve(f3);
QCOMPARE(f4.pointSize(), 55);
}
void tst_QFont::resetFont()
{
QWidget parent;
QFont parentFont = parent.font();
parentFont.setPointSize(parentFont.pointSize() + 2);
parent.setFont(parentFont);
QWidget *child = new QWidget(&parent);
QFont childFont = child->font();
childFont.setBold(!childFont.bold());
child->setFont(childFont);
QVERIFY(parentFont.resolve() != 0);
QVERIFY(childFont.resolve() != 0);
QVERIFY(childFont != parentFont);
child->setFont(QFont()); // reset font
QVERIFY(child->font().resolve() == 0);
QVERIFY(child->font().pointSize() == parent.font().pointSize());
QVERIFY(parent.font().resolve() != 0);
}
void tst_QFont::isCopyOf()
{
QFont font;
QVERIFY(font.isCopyOf(QApplication::font()));
QFont font2("bogusfont", 23);
QVERIFY(! font2.isCopyOf(QApplication::font()));
QFont font3 = font;
QVERIFY(font3.isCopyOf(font));
font3.setPointSize(256);
QVERIFY(!font3.isCopyOf(font));
font3.setPointSize(font.pointSize());
QVERIFY(!font3.isCopyOf(font));
}
void tst_QFont::setFontRaw()
{
#ifndef Q_WS_X11
QSKIP("Only tested on X11", SkipAll);
#else
QFont f;
f.setRawName("-*-fixed-bold-r-normal--0-0-*-*-*-0-iso8859-1");
// qDebug("font family: %s", f.family().utf8());
QFontDatabase fdb;
QStringList families = fdb.families();
bool found = false;
for (int i = 0; i < families.size(); ++i) {
QString str = families.at(i);
if (str.contains('['))
str = str.left(str.indexOf('[')-1);
if (str.toLower() == "fixed")
found = true;
}
if (!found) {
QSKIP("Fixed font not available.", SkipSingle);
}
QCOMPARE(QFontInfo(f).family().left(5).toLower(), QString("fixed"));
#endif
}
void tst_QFont::insertAndRemoveSubstitutions()
{
QFont::removeSubstitution("BogusFontFamily");
// make sure it is empty before we start
QVERIFY(QFont::substitutes("BogusFontFamily").isEmpty());
QVERIFY(QFont::substitutes("bogusfontfamily").isEmpty());
// inserting Foo
QFont::insertSubstitution("BogusFontFamily", "Foo");
QCOMPARE(QFont::substitutes("BogusFontFamily").count(), 1);
QCOMPARE(QFont::substitutes("bogusfontfamily").count(), 1);
// inserting Bar and Baz
QStringList moreFonts;
moreFonts << "Bar" << "Baz";
QFont::insertSubstitutions("BogusFontFamily", moreFonts);
QCOMPARE(QFont::substitutes("BogusFontFamily").count(), 3);
QCOMPARE(QFont::substitutes("bogusfontfamily").count(), 3);
QFont::removeSubstitution("BogusFontFamily");
// make sure it is empty again
QVERIFY(QFont::substitutes("BogusFontFamily").isEmpty());
QVERIFY(QFont::substitutes("bogusfontfamily").isEmpty());
}
static QFont copyFont(const QFont &font1) // copy using a QDataStream
{
QBuffer buffer;
buffer.open(QIODevice::WriteOnly);
QDataStream ds(&buffer);
ds << font1;
buffer.close();
buffer.open(QIODevice::ReadOnly);
QFont font2;
ds >> font2;
return font2;
}
void tst_QFont::serializeSpacing()
{
QFont font;
QCOMPARE(font.letterSpacing(), 0.);
QCOMPARE(font.wordSpacing(), 0.);
font.setLetterSpacing(QFont::AbsoluteSpacing, 105);
QCOMPARE(font.letterSpacing(), 105.);
QCOMPARE(font.letterSpacingType(), QFont::AbsoluteSpacing);
QCOMPARE(font.wordSpacing(), 0.);
QFont font2 = copyFont(font);
QCOMPARE(font2.letterSpacing(), 105.);
QCOMPARE(font2.letterSpacingType(), QFont::AbsoluteSpacing);
QCOMPARE(font2.wordSpacing(), 0.);
font.setWordSpacing(50.0);
QCOMPARE(font.letterSpacing(), 105.);
QCOMPARE(font.wordSpacing(), 50.);
QFont font3 = copyFont(font);
QCOMPARE(font3.letterSpacing(), 105.);
QCOMPARE(font3.letterSpacingType(), QFont::AbsoluteSpacing);
QCOMPARE(font3.wordSpacing(), 50.);
}
void tst_QFont::lastResortFont()
{
#ifdef Q_WS_QWS
QSKIP("QFont::lastResortFont() may abort with qFatal() on QWS", SkipAll);
// ...if absolutely no font is found. Just as ducumented for QFont::lastResortFont().
// This happens on our CI machines which run QWS autotests.
#endif
QFont font;
QVERIFY(!font.lastResortFont().isEmpty());
}
void tst_QFont::styleName()
{
#if !defined(Q_WS_MAC)
QSKIP("Only tested on Mac", SkipAll);
#else
QFont font("Helvetica Neue");
font.setStyleName("UltraLight");
QCOMPARE(QFontInfo(font).styleName(), QString("UltraLight"));
#endif
}
QTEST_MAIN(tst_QFont)
#include "tst_qfont.moc"
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