summaryrefslogtreecommitdiffstats
path: root/tests/auto/qfontmetrics/tst_qfontmetrics.cpp
blob: 982cfc11d95f77dcdaf41fd1d3859984115f1033 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
/****************************************************************************
**
** 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 <qfontmetrics.h>
#include <qfontdatabase.h>
#include <qstringlist.h>
#include <qlist.h>



//TESTED_CLASS=
//TESTED_FILES=

class tst_QFontMetrics : public QObject
{
Q_OBJECT

public:
    tst_QFontMetrics();
    virtual ~tst_QFontMetrics();

public slots:
    void init();
    void cleanup();
private slots:
    void same();
    void metrics();
    void boundingRect();
    void elidedText_data();
    void elidedText();
    void veryNarrowElidedText();
    void averageCharWidth();
    void bypassShaping();
    void elidedMultiLength();
    void elidedMultiLengthF();
    void inFontUcs4();
    void lineWidth();
};

tst_QFontMetrics::tst_QFontMetrics()

{
}

tst_QFontMetrics::~tst_QFontMetrics()
{

}

void tst_QFontMetrics::init()
{
}

void tst_QFontMetrics::cleanup()
{
}

void tst_QFontMetrics::same()
{
    QFont font;
    font.setBold(true);
    QFontMetrics fm(font);
    const QString text = QLatin1String("Some stupid STRING");
    QCOMPARE(fm.size(0, text), fm.size(0, text)) ;

    {
        QImage image;
        QFontMetrics fm2(font, &image);
        QString text2 =  QLatin1String("Foo Foo");
        QCOMPARE(fm2.size(0, text2), fm2.size(0, text2));  //used to crash
    }

    {
        QImage image;
        QFontMetricsF fm3(font, &image);
        QString text2 =  QLatin1String("Foo Foo");
        QCOMPARE(fm3.size(0, text2), fm3.size(0, text2));  //used to crash
    }
}


void tst_QFontMetrics::metrics()
{
    QFont font;
    QFontDatabase fdb;

    // Query the QFontDatabase for a specific font, store the
    // result in family, style and size.
    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) {
        const QString &family = *f_it;

        QStringList styles = fdb.styles(family);
        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);

                QFontMetrics fontmetrics(font);
                QCOMPARE(fontmetrics.ascent() + fontmetrics.descent() + 1,
                        fontmetrics.height());

                QCOMPARE(fontmetrics.height() + fontmetrics.leading(),
                        fontmetrics.lineSpacing());
            } 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);

                    QFontMetrics fontmetrics(font);
                    QCOMPARE(fontmetrics.ascent() + fontmetrics.descent() + 1,
                            fontmetrics.height());
                    QCOMPARE(fontmetrics.height() + fontmetrics.leading(),
                            fontmetrics.lineSpacing());
                }
            }
	}
    }
}

void tst_QFontMetrics::boundingRect()
{
    QFont f;
    f.setPointSize(24);
    QFontMetrics fm(f);
    QRect r = fm.boundingRect(QChar('Y'));
    QVERIFY(r.top() < 0);
    r = fm.boundingRect(QString("Y"));
    QVERIFY(r.top() < 0);
}

void tst_QFontMetrics::elidedText_data()
{
    QTest::addColumn<QFont>("font");
    QTest::addColumn<QString>("text");

    QTest::newRow("helvetica hello") << QFont("helvetica",10) << QString("hello") ;
    QTest::newRow("helvetica hello &Bye") << QFont("helvetica",10) << QString("hello&Bye") ;
}


void tst_QFontMetrics::elidedText()
{
    QFETCH(QFont, font);
    QFETCH(QString, text);
    QFontMetrics fm(font);
    int w = fm.width(text);
    QString newtext = fm.elidedText(text,Qt::ElideRight,w+1, 0);
    QCOMPARE(text,newtext); // should not elide
    newtext = fm.elidedText(text,Qt::ElideRight,w-1, 0);
    QVERIFY(text != newtext); // should elide
}

void tst_QFontMetrics::veryNarrowElidedText()
{
    QFont f;
    QFontMetrics fm(f);
    QString text("hello");
    QCOMPARE(fm.elidedText(text, Qt::ElideRight, 0), QString());
}

void tst_QFontMetrics::averageCharWidth()
{
    QFont f;
    QFontMetrics fm(f);
    QVERIFY(fm.averageCharWidth() != 0);
    QFontMetricsF fmf(f);
    QVERIFY(fmf.averageCharWidth() != 0);
}

void tst_QFontMetrics::bypassShaping()
{
    QFont f;
    f.setStyleStrategy(QFont::ForceIntegerMetrics);
    QFontMetrics fm(f);
    QString text = " A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z, a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y, z";
    int textWidth = fm.width(text, -1, Qt::TextBypassShaping);
    QVERIFY(textWidth != 0);
    int charsWidth = 0;
    for (int i = 0; i < text.size(); ++i)
        charsWidth += fm.width(text[i]);
    // This assertion is needed in QtWebKit's WebCore::Font::offsetForPositionForSimpleText
    QCOMPARE(textWidth, charsWidth);
}

template<class FontMetrics> void elidedMultiLength_helper()
{
    QString text1 = "Long Text 1\x9cShorter\x9csmall";
    QString text1_long = "Long Text 1";
    QString text1_short = "Shorter";
    QString text1_small = "small";
    FontMetrics fm = FontMetrics(QFont());
    int width_long = fm.size(0, text1_long).width();
    QCOMPARE(fm.elidedText(text1,Qt::ElideRight, 8000), text1_long);
    QCOMPARE(fm.elidedText(text1,Qt::ElideRight, width_long + 1), text1_long);
    QCOMPARE(fm.elidedText(text1,Qt::ElideRight, width_long - 1), text1_short);
    int width_short = fm.size(0, text1_short).width();
    QCOMPARE(fm.elidedText(text1,Qt::ElideRight, width_short + 1), text1_short);
    QCOMPARE(fm.elidedText(text1,Qt::ElideRight, width_short - 1), text1_small);

    // Not even wide enough for "small" - should use ellipsis
    QChar ellipsisChar(0x2026);
    QString text1_el = QString::fromLatin1("s") + ellipsisChar;
    int width_small = fm.width(text1_el);
    QCOMPARE(fm.elidedText(text1,Qt::ElideRight, width_small + 1), text1_el);
}

void tst_QFontMetrics::elidedMultiLength()
{
    elidedMultiLength_helper<QFontMetrics>();
}

void tst_QFontMetrics::elidedMultiLengthF()
{
    elidedMultiLength_helper<QFontMetricsF>();
}

void tst_QFontMetrics::inFontUcs4()
{
    int id = QFontDatabase::addApplicationFont(":/fonts/ucs4font.ttf");
    QVERIFY(id >= 0);

    QFont font("QtTestUcs4");
    {
        QFontMetrics fm(font);

#ifdef Q_WS_QPA
        QEXPECT_FAIL("", "QTBUG-20759 fails for qpa", Continue);
#endif

        QVERIFY(fm.inFontUcs4(0x1D7FF));
    }

    {
        QFontMetricsF fm(font);

#ifdef Q_WS_QPA
        QEXPECT_FAIL("", "QTBUG-20759 fails for qpa", Continue);
#endif

        QVERIFY(fm.inFontUcs4(0x1D7FF));
    }

    QFontDatabase::removeApplicationFont(id);
}

void tst_QFontMetrics::lineWidth()
{
    // QTBUG-13009, QTBUG-13011
    QFont smallFont;
    smallFont.setPointSize(8);
    smallFont.setWeight(QFont::Light);
    const QFontMetrics smallFontMetrics(smallFont);

    QFont bigFont;
    bigFont.setPointSize(40);
    bigFont.setWeight(QFont::Black);
    const QFontMetrics bigFontMetrics(bigFont);

    QVERIFY(smallFontMetrics.lineWidth() >= 1);

#ifdef Q_WS_QPA
    QEXPECT_FAIL("", "QTBUG-20759 fails for qpa", Continue);
#endif

    QVERIFY(smallFontMetrics.lineWidth() < bigFontMetrics.lineWidth());
}

QTEST_MAIN(tst_QFontMetrics)
#include "tst_qfontmetrics.moc"