's60theme' is a commandline tool which converts Carbide.ui themes into

an intermediate binary format that can be read by the simulated
QS60Style. So, for example Designer (standalone or in Carbide) will
be able to display a realistic S60 Ui.

The intermediate binary format hashes of QPictures and QColors,
streamed to a QByteArray and compressed. The QS60Style could not load
the Carbide.ui theme directly because SVG handling is unfortunately
not part of QtGui, and would require a dependency on the QtSvg module.

Also, 's60theme' uses QWebkit to parse the SVG graphics (inspired by
Ariya's 'WebKit-based SVG rasterizer' labs post). QtSvg had some issues
with the SVGs that come with Carbide.ui.

1 files changed, 300 insertions, 0 deletions

diff --git a/util/s60theme/s60themeconvert.cpp b/util/s60theme/s60themeconvert.cpp
new file mode 100644
index 0000000..4fe2980
--- /dev/null
+++ b/util/s60theme/s60themeconvert.cpp
@@ -0,0 +1,300 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the tools applications of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, 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 1.0, 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.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "s60themeconvert.h"
+
+#include <QtGui>
+#include <QtWebKit>
+
+static const int pictureSize = 256;
+
+void dumpPartPictures(const QHash<QString, QPicture> &partPictures) {
+    foreach (const QString &partKey, partPictures.keys()) {
+        QPicture partPicture = partPictures.value(partKey);
+        qDebug() << partKey << partPicture.boundingRect();
+        QImage image(partPicture.boundingRect().size(), QImage::Format_ARGB32);
+        image.fill(Qt::transparent);
+        QPainter p(&image);
+        partPicture.play(&p);
+        image.save(partKey + QString::fromLatin1(".png"));
+    }
+}
+
+void dumpColors(const QHash<QPair<QString, int>, QColor> &colors) {
+    foreach (const QColor &color, colors.values()) {
+        const QPair<QString, int> key = colors.key(color);
+        qDebug() << key << color;
+    }
+}
+
+class WebKitSVGRenderer : public QWebView
+{
+    Q_OBJECT
+
+public:
+    WebKitSVGRenderer(QWidget *parent = 0);
+    QPicture svgToQPicture(const QString &svgFileName);
+
+private slots:
+    void loadFinishedSlot(bool ok);
+
+private:
+    QEventLoop m_loop;
+    QPicture m_result;
+};
+
+WebKitSVGRenderer::WebKitSVGRenderer(QWidget *parent)
+    : QWebView(parent)
+{
+    connect(this, SIGNAL(loadFinished(bool)), SLOT(loadFinishedSlot(bool)));
+    setFixedSize(pictureSize, pictureSize);
+    QPalette pal = palette();
+    pal.setColor(QPalette::Base, Qt::transparent);
+    setPalette(pal);
+}
+
+QPicture WebKitSVGRenderer::svgToQPicture(const QString &svgFileName)
+{
+    load(QUrl::fromLocalFile(svgFileName));
+    m_loop.exec();
+    return m_result;
+}
+
+void WebKitSVGRenderer::loadFinishedSlot(bool ok)
+{
+    // crude error-checking
+    if (!ok)
+        qDebug() << "Failed loading " << qPrintable(url().toString());
+
+    page()->mainFrame()->evaluateJavaScript(QString::fromLatin1(
+        "document.rootElement.preserveAspectRatio.baseVal.align = SVGPreserveAspectRatio.SVG_PRESERVEASPECTRATIO_NONE;"
+        "document.rootElement.style.width = '100%';"
+        "document.rootElement.style.height = '100%';"
+        "document.rootElement.width.baseVal.newValueSpecifiedUnits(SVGLength.SVG_LENGTHTYPE_PERCENTAGE, 100);"
+        "document.rootElement.height.baseVal.newValueSpecifiedUnits(SVGLength.SVG_LENGTHTYPE_PERCENTAGE, 100);"
+    ));
+
+    m_result = QPicture(); // "Clear"
+    QPainter p(&m_result);
+    page()->mainFrame()->render(&p);
+    p.end();
+    m_result.setBoundingRect(QRect(0, 0, pictureSize, pictureSize));
+
+    m_loop.exit();
+}
+
+QPair<QString, int> colorIdPair(const QString &colorID)
+{
+    QPair<QString, int> result;
+    QString idText = colorID;
+    idText.remove(QRegExp(QString::fromLatin1("[0-9]")));
+    if (QS60Style::colorListKeys().contains(idText)) {
+        QString idNumber = colorID;
+        idNumber.remove(QRegExp(QString::fromLatin1("[a-zA-Z]")));
+        result.first = idText;
+        result.second = idNumber.toInt();
+    }
+    return result;
+}
+
+bool parseTdfFile(const QString &tdfFile,
+        QHash<QString, QString> &partSvgs,
+        QHash<QPair<QString, int>, QColor> &colors)
+{
+    QFile file(tdfFile);
+    if (!file.open(QIODevice::ReadOnly))
+        return false;
+
+    const QLatin1String elementKey("element");
+    const QLatin1String partKey("part");
+    const QLatin1String elementIdKey("id");
+    const QLatin1String layerKey("layer");
+    const QLatin1String layerFileNameKey("filename");
+    const QLatin1String layerColourrgbKey("colourrgb");
+    const QString annoyingPrefix = QString::fromLatin1("S60_2_6%");
+
+    QXmlStreamReader reader(&file);
+    QString partId;
+    QPair<QString, int> colorId;
+    // Somebody with a sense of aesthetics may implement proper XML parsing, here.
+    while (!reader.atEnd()) {
+        const QXmlStreamReader::TokenType token = reader.readNext();
+        switch (token) {
+            case QXmlStreamReader::StartElement:
+                if (reader.name() == elementKey || reader.name() == partKey) {
+                    QString id = reader.attributes().value(elementIdKey).toString();
+                    if (QS60Style::partKeys().contains(id))
+                        partId = id;
+                    else if (!id.isEmpty() && id.at(id.length()-1).isDigit())
+                        colorId = colorIdPair(id);
+                    else if (QS60Style::partKeys().contains(id.mid(annoyingPrefix.length())))
+                        partId = id.mid(annoyingPrefix.length());
+                } else if(reader.name() == layerKey) {
+                    if (!partId.isEmpty()) {
+                        const QString svgFile = reader.attributes().value(layerFileNameKey).toString();
+                        partSvgs.insert(partId, svgFile);
+                        partId.clear();
+                    } else if (!colorId.first.isEmpty()) {
+                        const QColor colorValue(reader.attributes().value(layerColourrgbKey).toString().toInt(NULL, 16));
+                        colors.insert(colorId, colorValue);
+                        colorId.first.clear();
+                    }
+                }
+                break;
+            case QXmlStreamReader::EndElement:
+                if (reader.tokenString() == elementKey || reader.name() == partKey)
+                    partId.clear();
+                break;
+            default:
+                break;
+        }
+    }
+    return true;
+}
+
+bool loadThemeFromTdf(const QString &tdfFile,
+        QHash<QString, QPicture> &partPictures,
+        QHash<QPair<QString, int>, QColor> &colors)
+{
+    QHash<QString, QString> parsedPartSvgs;
+    QHash<QString, QPicture> parsedPartPictures;
+    QHash<QPair<QString, int>, QColor> parsedColors;
+    bool success = parseTdfFile(tdfFile, parsedPartSvgs, parsedColors);
+    if (!success)
+        return false;
+    const QString tdfBasePath = QFileInfo(tdfFile).absolutePath();
+    WebKitSVGRenderer renderer;
+    foreach(const QString& partKey, parsedPartSvgs.keys()) {
+        const QString tdfFullName =
+            tdfBasePath + QDir::separator() + parsedPartSvgs.value(partKey);
+        if (!QFile(tdfFullName).exists())
+            qWarning() << "Could not load part " << tdfFullName;
+        const QPicture partPicture = renderer.svgToQPicture(tdfFullName);
+        parsedPartPictures.insert(partKey, partPicture);
+    }
+//    dumpPartPictures(parsedPartPictures);
+//    dumpColors(colors);
+    partPictures = parsedPartPictures;
+    colors = parsedColors;
+    return true;
+}
+
+bool S60ThemeConvert::convertTdfToBlob(const QString &themeTdf, const QString &themeBlob)
+{
+    QHash<QString, QPicture> partPictures;
+    QHash<QPair<QString, int>, QColor> colors;
+
+    if (!::loadThemeFromTdf(themeTdf, partPictures, colors))
+        return false;
+
+    QS60Style style;
+    style.setS60Theme(partPictures, colors);
+    return style.saveS60ThemeToBlob(themeBlob);
+}
+
+bool parseDesignFile(const QString &designFile,
+        QHash<QPair<QString, int>, QColor> &colors)
+{
+    const QLatin1String elementKey("element");
+    const QLatin1String elementIdKey("id");
+    const QLatin1String colorKey("defaultcolour_rgb");
+    QFile file(designFile);
+    if (!file.open(QIODevice::ReadOnly))
+        return false;
+    QXmlStreamReader reader(&file);
+    QPair<QString, int> colorId;
+    // Somebody with a sense of aesthetics may implement proper XML parsing, here.
+    while (!reader.atEnd()) {
+        const QXmlStreamReader::TokenType token = reader.readNext();
+        switch (token) {
+            case QXmlStreamReader::StartElement:
+                if (reader.name() == elementKey) {
+                    const QString colorString = reader.attributes().value(colorKey).toString();
+                    if (!colorString.isEmpty()) {
+                        const QString colorId = reader.attributes().value(elementIdKey).toString();
+                        colors.insert(colorIdPair(colorId), colorString.toInt(NULL, 16));
+                    }
+                }
+            default:
+                break;
+        }
+    }
+    return true;
+}
+
+bool loadDefaultTheme(const QString &themePath,
+        QHash<QString, QPicture> &partPictures,
+        QHash<QPair<QString, int>, QColor> &colors)
+{
+    const QDir dir(themePath);
+    if (!dir.exists())
+        return false;
+
+    if (!parseDesignFile(themePath + QDir::separator() + QString::fromLatin1("defaultdesign.xml"), colors))
+        return false;
+
+    WebKitSVGRenderer renderer;
+    foreach (const QString &partKey, QS60Style::partKeys()) {
+        const QString partFile(dir.absolutePath() + QDir::separator() + partKey + QLatin1String(".svg"));
+        if (!QFile::exists(partFile)) {
+            qWarning() << "Could not load part " << partFile;
+            continue;
+        }
+        const QPicture partPicture = renderer.svgToQPicture(partFile);
+        partPictures.insert(partKey, partPicture);
+    }
+    return true;
+}
+
+bool S60ThemeConvert::convertDefaultThemeToBlob(const QString &themePath, const QString &themeBlob)
+{
+    QHash<QString, QPicture> partPictures;
+    QHash<QPair<QString, int>, QColor> colors;
+
+    if (!::loadDefaultTheme(themePath, partPictures, colors))
+        return false;
+
+    QS60Style style;
+    style.setS60Theme(partPictures, colors);
+    return style.saveS60ThemeToBlob(themeBlob);
+}
+
+#include "s60themeconvert.moc"