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#include <QtGui>

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_WS_X11)

            "X11"

#elif defined(Q_OS_SYMBIAN)

            "Symbian"

#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;

}