Initial import of statemachine branch from the old kinetic repository

1 files changed, 363 insertions, 0 deletions

diff --git a/src/plugins/iconengines/svgiconengine/qsvgiconengine.cpp b/src/plugins/iconengines/svgiconengine/qsvgiconengine.cpp
new file mode 100644
index 0000000..7fdf81f
--- /dev/null
+++ b/src/plugins/iconengines/svgiconengine/qsvgiconengine.cpp
@@ -0,0 +1,363 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the plugins 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 "qsvgiconengine.h"
+
+#ifndef QT_NO_SVGRENDERER
+
+#include "qpainter.h"
+#include "qpixmap.h"
+#include "qsvgrenderer.h"
+#include "qpixmapcache.h"
+#include "qstyle.h"
+#include "qapplication.h"
+#include "qstyleoption.h"
+#include "qfileinfo.h"
+#include <QAtomicInt>
+#include "qdebug.h"
+
+QT_BEGIN_NAMESPACE
+
+class QSvgIconEnginePrivate : public QSharedData
+{
+public:
+    QSvgIconEnginePrivate()
+        : svgBuffers(0), addedPixmaps(0)
+        { stepSerialNum(); }
+
+    ~QSvgIconEnginePrivate()
+        { delete addedPixmaps; delete svgBuffers; }
+
+    static int hashKey(QIcon::Mode mode, QIcon::State state)
+        { return (((mode)<<4)|state); }
+
+    QString pmcKey(const QSize &size, QIcon::Mode mode, QIcon::State state)
+        { return QLatin1String("$qt_svgicon_")
+                 + QString::number(serialNum, 16).append(QLatin1Char('_'))
+                 + QString::number((((((size.width()<<11)|size.height())<<11)|mode)<<4)|state, 16); }
+
+    void stepSerialNum()
+        { serialNum = lastSerialNum.fetchAndAddRelaxed(1); };
+
+    void loadDataForModeAndState(QSvgRenderer *renderer, QIcon::Mode mode, QIcon::State state);
+
+    QHash<int, QString> svgFiles;
+    QHash<int, QByteArray> *svgBuffers;
+    QHash<int, QPixmap> *addedPixmaps;
+    int serialNum;
+    static QAtomicInt lastSerialNum;
+};
+
+QAtomicInt QSvgIconEnginePrivate::lastSerialNum;
+
+static inline int pmKey(const QSize &size, QIcon::Mode mode, QIcon::State state)
+{
+    return ((((((size.width()<<11)|size.height())<<11)|mode)<<4)|state);
+}
+
+QSvgIconEngine::QSvgIconEngine()
+    : d(new QSvgIconEnginePrivate)
+{
+}
+
+QSvgIconEngine::QSvgIconEngine(const QSvgIconEngine &other)
+    : QIconEngineV2(other), d(new QSvgIconEnginePrivate)
+{
+    d->svgFiles = other.d->svgFiles;
+    if (other.d->svgBuffers)
+        d->svgBuffers = new QHash<int, QByteArray>(*other.d->svgBuffers);
+    if (other.d->addedPixmaps)
+        d->addedPixmaps = new QHash<int, QPixmap>(*other.d->addedPixmaps);
+}
+
+
+QSvgIconEngine::~QSvgIconEngine()
+{
+}
+
+
+QSize QSvgIconEngine::actualSize(const QSize &size, QIcon::Mode mode,
+                                 QIcon::State state)
+{
+    if (d->addedPixmaps) {
+        QPixmap pm = d->addedPixmaps->value(d->hashKey(mode, state));
+        if (!pm.isNull() && pm.size() == size)
+            return size;
+    }
+    
+    QSvgRenderer renderer;
+    d->loadDataForModeAndState(&renderer, mode, state);
+    if (renderer.isValid()) {
+        QSize defaultSize = renderer.defaultSize();
+        if (!defaultSize.isNull())
+            defaultSize.scale(size, Qt::KeepAspectRatio);
+        return defaultSize;
+    } else {
+        return QSize();
+    }
+}
+
+void QSvgIconEnginePrivate::loadDataForModeAndState(QSvgRenderer *renderer, QIcon::Mode mode, QIcon::State state)
+{
+    QByteArray buf;
+    if (svgBuffers) {
+        buf = svgBuffers->value(hashKey(mode, state));
+        if (buf.isEmpty())
+            buf = svgBuffers->value(hashKey(QIcon::Normal, QIcon::Off));
+    }
+    if (!buf.isEmpty()) {
+#ifndef QT_NO_COMPRESS
+        buf = qUncompress(buf);
+#endif
+        renderer->load(buf);
+    } else {
+        QString svgFile = svgFiles.value(hashKey(mode, state));
+        if (svgFile.isEmpty())
+            svgFile = svgFiles.value(hashKey(QIcon::Normal, QIcon::Off));
+        if (!svgFile.isEmpty())
+            renderer->load(svgFile);
+    }
+}
+
+QPixmap QSvgIconEngine::pixmap(const QSize &size, QIcon::Mode mode,
+                               QIcon::State state)
+{   
+    QPixmap pm;
+
+    if (d->addedPixmaps) {
+        pm = d->addedPixmaps->value(d->hashKey(mode, state));
+        if (!pm.isNull() && pm.size() == size)
+            return pm;
+    }
+
+    QSvgRenderer renderer;
+    d->loadDataForModeAndState(&renderer, mode, state);
+    if (!renderer.isValid())
+        return pm;
+
+    QSize actualSize = renderer.defaultSize();
+    if (!actualSize.isNull())
+        actualSize.scale(size, Qt::KeepAspectRatio);
+
+    QString pmckey(d->pmcKey(actualSize, mode, state));
+    if (QPixmapCache::find(pmckey, pm))
+        return pm;
+
+    QImage img(actualSize, QImage::Format_ARGB32_Premultiplied);
+    img.fill(0x00000000);
+    QPainter p(&img);
+    renderer.render(&p);
+    p.end();
+    pm = QPixmap::fromImage(img);
+    QStyleOption opt(0);
+    opt.palette = QApplication::palette();
+    QPixmap generated = QApplication::style()->generatedIconPixmap(mode, pm, &opt);
+    if (!generated.isNull())
+        pm = generated;
+
+    if (!pm.isNull())
+        QPixmapCache::insert(pmckey, pm);
+
+    return pm;
+}
+
+
+void QSvgIconEngine::addPixmap(const QPixmap &pixmap, QIcon::Mode mode,
+                               QIcon::State state)
+{
+    if (!d->addedPixmaps)
+        d->addedPixmaps = new QHash<int, QPixmap>;
+    d->stepSerialNum();
+    d->addedPixmaps->insert(d->hashKey(mode, state), pixmap);
+}
+
+
+void QSvgIconEngine::addFile(const QString &fileName, const QSize &,
+                             QIcon::Mode mode, QIcon::State state)
+{
+    if (!fileName.isEmpty()) {
+        QString abs = fileName;
+        if (fileName.at(0) != QLatin1Char(':'))
+            abs = QFileInfo(fileName).absoluteFilePath();
+        if (abs.endsWith(QLatin1String(".svg"), Qt::CaseInsensitive)
+#ifndef QT_NO_COMPRESS
+                || abs.endsWith(QLatin1String(".svgz"), Qt::CaseInsensitive)
+                || abs.endsWith(QLatin1String(".svg.gz"), Qt::CaseInsensitive))
+#endif
+        {
+            QSvgRenderer renderer(abs);
+            if (renderer.isValid()) {
+                d->stepSerialNum();
+                d->svgFiles.insert(d->hashKey(mode, state), abs);
+            }
+        } else {
+            QPixmap pm(abs);
+            if (!pm.isNull())
+                addPixmap(pm, mode, state);
+        }
+    }
+}
+
+void QSvgIconEngine::paint(QPainter *painter, const QRect &rect,
+                           QIcon::Mode mode, QIcon::State state)
+{
+    painter->drawPixmap(rect, pixmap(rect.size(), mode, state));
+}
+
+QString QSvgIconEngine::key() const
+{
+    return QLatin1String("svg");
+}
+
+QIconEngineV2 *QSvgIconEngine::clone() const
+{
+    return new QSvgIconEngine(*this);
+}
+
+
+bool QSvgIconEngine::read(QDataStream &in)
+{
+    d = new QSvgIconEnginePrivate;
+    d->svgBuffers = new QHash<int, QByteArray>;
+
+    if (in.version() >= QDataStream::Qt_4_4) {
+        int isCompressed;
+        QHash<int, QString> fileNames;  // For memoryoptimization later
+        in >> fileNames >> isCompressed >> *d->svgBuffers;
+#ifndef QT_NO_COMPRESS
+        if (!isCompressed) {
+            foreach(int key, d->svgBuffers->keys())
+                d->svgBuffers->insert(key, qCompress(d->svgBuffers->value(key)));
+        }
+#else
+        if (isCompressed) {
+            qWarning("QSvgIconEngine: Can not decompress SVG data");
+            d->svgBuffers->clear();
+        }
+#endif
+        int hasAddedPixmaps;
+        in >> hasAddedPixmaps;
+        if (hasAddedPixmaps) {
+            d->addedPixmaps = new QHash<int, QPixmap>;
+            in >> *d->addedPixmaps;
+        }
+    }
+    else {
+        QPixmap pixmap;
+        QByteArray data;
+        uint mode;
+        uint state;
+        int num_entries;
+
+        in >> data;
+        if (!data.isEmpty()) {
+#ifndef QT_NO_COMPRESS
+            data = qUncompress(data);
+#endif
+            if (!data.isEmpty())
+                d->svgBuffers->insert(d->hashKey(QIcon::Normal, QIcon::Off), data);
+        }
+        in >> num_entries;
+        for (int i=0; i<num_entries; ++i) {
+            if (in.atEnd())
+                return false;
+            in >> pixmap;
+            in >> mode;
+            in >> state;
+            // The pm list written by 4.3 is buggy and/or useless, so ignore.
+            //addPixmap(pixmap, QIcon::Mode(mode), QIcon::State(state));
+        }
+    }
+
+    return true;
+}
+
+
+bool QSvgIconEngine::write(QDataStream &out) const
+{
+    if (out.version() >= QDataStream::Qt_4_4) {
+        int isCompressed = 0;
+#ifndef QT_NO_COMPRESS
+        isCompressed = 1;
+#endif
+        QHash<int, QByteArray> svgBuffers;
+        if (d->svgBuffers)
+            svgBuffers = *d->svgBuffers;
+        foreach(int key, d->svgFiles.keys()) {
+            QByteArray buf;
+            QFile f(d->svgFiles.value(key));
+            if (f.open(QIODevice::ReadOnly))
+                buf = f.readAll();
+#ifndef QT_NO_COMPRESS
+            buf = qCompress(buf);
+#endif
+            svgBuffers.insert(key, buf);
+        }
+        out << d->svgFiles << isCompressed << svgBuffers;
+        if (d->addedPixmaps)
+            out << (int)1 << *d->addedPixmaps;
+        else
+            out << (int)0;
+    }
+    else {
+        QByteArray buf;
+        if (d->svgBuffers)
+            buf = d->svgBuffers->value(d->hashKey(QIcon::Normal, QIcon::Off));
+        if (buf.isEmpty()) {
+            QString svgFile = d->svgFiles.value(d->hashKey(QIcon::Normal, QIcon::Off));
+            if (!svgFile.isEmpty()) {
+                QFile f(svgFile);
+                if (f.open(QIODevice::ReadOnly))
+                    buf = f.readAll();
+            }
+        }
+#ifndef QT_NO_COMPRESS
+        buf = qCompress(buf);
+#endif
+        out << buf;
+        // 4.3 has buggy handling of added pixmaps, so don't write any
+        out << (int)0;
+    }
+    return true;
+}
+
+QT_END_NAMESPACE
+
+#endif // QT_NO_SVGRENDERER