qt5base-lts/tests/manual/textrendering/glyphshaping/main.cpp

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/****************************************************************************
**
** 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.
**
** $QT_BEGIN_LICENSE:GPL-EXCEPT$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QApplication>
#include <QStringList>
#include <QVector>
#include <QFile>
#include <QDir>
#include <QPainter>
#include <QFontMetrics>
#include <QImage>
#include <QXmlStreamReader>
static const int fontPixelSize = 25;
static const QLatin1String fontFamily("Series 60 Sans");
struct testDataSet
{
QString language;
QString name;
QString input;
QString inputOriginal;
QString output;
QString outputOriginal;
QVector<uint> outputGlyphIDs;
QString outputGlyphIDsOriginal;
};
QString charHexCsv2String(const QString &csv)
{
QString result;
foreach (const QString &charString, csv.split(QLatin1Char(','), QString::SkipEmptyParts)) {
bool isOk;
const uint charUInt = charString.toUInt(&isOk, 16);
Q_ASSERT(isOk);
const int size = charUInt >= SHRT_MAX ? 2:1;
result.append(QString::fromUtf16((const ushort*)&charUInt, size));
}
return result;
}
QList<testDataSet> testDataSetList()
{
QList<testDataSet> result;
QFile file("glyphshaping_data.xml");
const bool success = file.open(QIODevice::ReadOnly);
Q_ASSERT(success);
const QLatin1String language("language");
const QLatin1String test("test");
const QLatin1String inputUtf16("inpututf16");
const QLatin1String outputUtf16("outpututf16");
const QLatin1String outputGlyphIDs("outputglyphids");
const QLatin1String name("name");
QString languageName;
QXmlStreamReader reader(&file);
while (!reader.atEnd()) {
const QXmlStreamReader::TokenType token = reader.readNext();
switch (token) {
case QXmlStreamReader::StartElement:
if (reader.name() == language) {
Q_ASSERT(reader.attributes().hasAttribute(name));
languageName = reader.attributes().value(name).toString();
} else if (reader.name() == test) {
if (!reader.attributes().hasAttribute(outputUtf16)
&& !reader.attributes().hasAttribute(outputGlyphIDs))
continue;
Q_ASSERT(!languageName.isEmpty());
Q_ASSERT(reader.attributes().hasAttribute(name));
Q_ASSERT(reader.attributes().hasAttribute(inputUtf16));
testDataSet set;
set.language = languageName;
set.name = reader.attributes().value(name).toString();
set.inputOriginal = reader.attributes().value(inputUtf16).toString();
set.input = charHexCsv2String(set.inputOriginal);
set.outputOriginal = reader.attributes().value(outputUtf16).toString();
set.output = charHexCsv2String(set.outputOriginal);
set.outputGlyphIDsOriginal = reader.attributes().value(outputGlyphIDs).toString();
result.append(set);
}
break;
default:
break;
}
}
return result;
}
QImage renderedText(const QString &text, const QFont &font)
{
const QFontMetrics metrics(font);
const QRect boundingRect = metrics.boundingRect(text);
QImage result(boundingRect.size(), QImage::Format_ARGB32);
result.fill(0);
QPainter p(&result);
p.setFont(font);
p.drawText(boundingRect.translated(-boundingRect.topLeft()), text);
return result;
}
QString dumpImageHtml(const QString &text, const QString &pathName)
{
if (text.isEmpty())
return QLatin1String("<td/>");
QFont font(fontFamily);
font.setPixelSize(fontPixelSize);
const QImage textImage = renderedText(text, font);
const QString imageFileName =
(pathName + QDir::separator() + QLatin1String("%1.png"))
.arg(textImage.cacheKey());
const bool success = textImage.save(imageFileName);
Q_ASSERT(success);
return
QString::fromLatin1("<td title=\"%2\"><img src=\"%1\" alt=\"%2\" width=\"%3\" height=\"%4\"/></td>")
.arg(QDir::cleanPath(imageFileName)).arg(text).arg(textImage.width()).arg(textImage.height());
}
QString dlItem(const QString &dt, const QString &dd)
{
if (!dd.trimmed().isEmpty())
return QString::fromLatin1("\t\t\t\t\t\t<dt>%1</dt><dd>%2</dd>\n").arg(dt).arg(dd);
return QString();
}
bool dumpHtml(const QString &pathName)
{
QFile htmlPage(pathName + QDir::separator() + QLatin1String("index.html"));
if (!htmlPage.open(QFile::WriteOnly))
return false;
QString platformName = QString::fromLatin1(
#if defined(Q_OS_WIN)
"Win32"
#elif defined(Q_DEAD_CODE_FROM_QT4_X11)
"X11"
#else
""
#endif
);
QString result = QString::fromLatin1(
"<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Strict//EN\"\n"
" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd\">\n\n"
"<html xmlns=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\" lang=\"en\">\n"
"\t<head>\n"
"\t\t<title>Qt on %1 glyph shaping (%2)</title>\n"
"\t\t<meta http-equiv=\"content-type\" content=\"text/html;charset=utf-8\" />\n"
"\t\t<style type=\"text/css\" media=\"screen\">\n"
"\t\t\ttable { font-family: Arial; background-color: #ccccff; font-size: 12pt; }\n"
"\t\t\ttd { font-family:\"%2\"; background-color: #eeeeee; font-size: %3px; }\n"
"\t\t\tth { font-weight:normal; }\n"
"\t\t\tdl { font-family: Arial; font-size: 8pt; margin: 3px; }\n"
"\t\t\tdt { font-weight: bold; float: left; }\n"
"\t\t\ttr:hover { background-color: #ddddff; }\n"
"\t\t\ttd:hover { background-color: #ddddff; }\n"
"\t\t</style>\n"
"\t</head>\n"
"\t<body>\n"
"\t\t<h1>Qt on %1 glyph shaping (%2)</h1>\n"
"\t\t<dl>\n"
"\t\t\t<dt>I</dt><dd>Input Utf-16 to shaper</dd>\n"
"\t\t\t<dt>O-Utf</dt><dd>expected output Utf-16</dd>\n"
"\t\t\t<dt>O-ID</dt><dd>expected output Glyph IDs for \"Series 60 Sans\"</dd>\n"
"\t\t</dl>\n"
"\t\t<table>\n"
).arg(platformName).arg(fontFamily).arg(fontPixelSize);
QString languageName;
foreach (const testDataSet &dataSet, testDataSetList()) {
if (languageName != dataSet.language) {
result.append(QString::fromLatin1(
"\t\t\t<tr>\n"
"\t\t\t\t<th rowspan=\"2\"><h2>%1</h2></th>\n"
"\t\t\t\t<th colspan=\"2\">Qt/%2</th>\n"
"\t\t\t\t<th rowspan=\"2\">Glyphs</th>\n"
"\t\t\t\t<th colspan=\"2\">Browser</th>\n"
"\t\t\t</tr>\n"
"\t\t\t<tr>\n"
"\t\t\t\t<th>In</th>\n"
"\t\t\t\t<th>Out</th>\n"
"\t\t\t\t<th>In</th>\n"
"\t\t\t\t<th>Out</th>\n"
"\t\t\t</tr>\n"
).arg(dataSet.language).arg(platformName));
languageName = dataSet.language;
}
QString glyphsData;
if (!dataSet.inputOriginal.isEmpty())
glyphsData.append(dlItem(QLatin1String("I"), dataSet.inputOriginal));
if (!dataSet.outputOriginal.isEmpty())
glyphsData.append(dlItem(QLatin1String("O-Utf"), dataSet.outputOriginal));
if (!dataSet.outputGlyphIDsOriginal.isEmpty())
glyphsData.append(dlItem(QLatin1String("O-ID"), dataSet.outputGlyphIDsOriginal));
if (!glyphsData.isEmpty()) {
glyphsData.prepend(QLatin1String("\t\t\t\t\t<dl>\n"));
glyphsData.append(QLatin1String("\t\t\t\t\t</dl>\n"));
}
result.append(QString::fromLatin1(
"\t\t\t<tr>\n"
"\t\t\t\t<th>%1</th>\n"
"\t\t\t\t%2\n"
"\t\t\t\t%3\n"
"\t\t\t\t<td>\n"
"%4"
"\t\t\t\t</td>\n"
"\t\t\t\t<td>%5</td>\n"
"\t\t\t\t<td>%6</td>\n"
"\t\t\t</tr>\n"
).arg(dataSet.name)
.arg(dumpImageHtml(dataSet.input, pathName))
.arg(dumpImageHtml(dataSet.output, pathName))
.arg(glyphsData)
.arg(dataSet.input)
.arg(dataSet.output)
);
}
result.append(QString::fromLatin1(
"\t\t</table>\n"
"\t</body>\n"
"</html>")
);
htmlPage.write(result.toUtf8());
return true;
}
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
return dumpHtml(QLatin1String(".")) ? 0 : 1;
}