Total makeover of SVG image reader

Improved/fixed canRead(). Added svgz support. Implemented ClipRect,
ScaledClipRect and BackgroundColor support. Avoid data copy when reading
from memory. Improved support reading from sequential devices. Added svg
and svgz files to the qimagereader autotests.

Task-number: QTBUG-8227 and QTBUG-9053
Reviewed-by: Kim

9 files changed, 667 insertions, 69 deletions

diff --git a/src/plugins/imageformats/svg/main.cpp b/src/plugins/imageformats/svg/main.cpp
index dbbd3b7..329e9d4 100644
--- a/src/plugins/imageformats/svg/main.cpp
+++ b/src/plugins/imageformats/svg/main.cpp
@@ -62,26 +62,18 @@ public:
 
 QStringList QSvgPlugin::keys() const
 {
-    return QStringList() << QLatin1String("svg");
+    return QStringList() << QLatin1String("svg") << QLatin1String("svgz");
 }
 
 QImageIOPlugin::Capabilities QSvgPlugin::capabilities(QIODevice *device, const QByteArray &format) const
 {
-    //### canRead disabled for now because it's hard to detect
-    //    whether the file is actually svg without parsing it
-    //if (device->isReadable() && QSvgIOHandler::canRead(device))
-
-    if (format == "svg")
+    if (format == "svg" || format == "svgz")
         return Capabilities(CanRead);
-    else
-        return 0;
-
-
-    if (!device->isOpen())
+    if (!format.isEmpty())
         return 0;
 
     Capabilities cap;
-    if (device->isReadable())
+    if (device->isReadable() && QSvgIOHandler::canRead(device))
         cap |= CanRead;
     return cap;
 }
diff --git a/src/plugins/imageformats/svg/qsvgiohandler.cpp b/src/plugins/imageformats/svg/qsvgiohandler.cpp
index f3670c6..8155569 100644
--- a/src/plugins/imageformats/svg/qsvgiohandler.cpp
+++ b/src/plugins/imageformats/svg/qsvgiohandler.cpp
@@ -48,6 +48,7 @@
 #include "qpixmap.h"
 #include "qpainter.h"
 #include "qvariant.h"
+#include "qbuffer.h"
 #include "qdebug.h"
 
 QT_BEGIN_NAMESPACE
@@ -55,67 +56,54 @@ QT_BEGIN_NAMESPACE
 class QSvgIOHandlerPrivate
 {
 public:
-    QSvgIOHandlerPrivate()
-        : r(new QSvgRenderer()), loaded(false)
+    QSvgIOHandlerPrivate(QSvgIOHandler *qq)
+        : q(qq), loaded(false), readDone(false), backColor(Qt::transparent)
     {}
-    ~QSvgIOHandlerPrivate()
-    {
-        delete r;
-    }
 
     bool load(QIODevice *device);
-    static bool findSvgTag(QIODevice *device);
 
-    QSvgRenderer *r;
-    QSize         defaultSize;
-    QSize         currentSize;
-    bool          loaded;
+    QSvgIOHandler   *q;
+    QSvgRenderer     r;
+    QXmlStreamReader xmlReader;
+    QSize            defaultSize;
+    QRect            clipRect;
+    QSize            scaledSize;
+    QRect            scaledClipRect;
+    bool             loaded;
+    bool             readDone;
+    QColor           backColor;
 };
 
+
 bool QSvgIOHandlerPrivate::load(QIODevice *device)
 {
     if (loaded)
         return true;
+    if (q->format().isEmpty())
+        q->canRead();
+
+    bool res = false;
+    QBuffer *buf = qobject_cast<QBuffer *>(device);
+    if (buf) {
+        res = r.load(buf->data());
+    } else if (q->format() == "svgz") {
+        res = r.load(device->readAll());   // ### can't stream svgz
+    } else {
+        xmlReader.setDevice(device);
+        res = r.load(&xmlReader);   //### doesn't leave pos() correctly
+    }
 
-    if (r->load(device->readAll())) {
-        defaultSize = QSize(r->viewBox().width(), r->viewBox().height());
-        if (currentSize.isEmpty())
-            currentSize = defaultSize;
+    if (res) {
+        defaultSize = QSize(r.viewBox().width(), r.viewBox().height());
+        loaded = true;
     }
-    loaded = r->isValid();
 
     return loaded;
 }
 
-bool QSvgIOHandlerPrivate::findSvgTag(QIODevice *device)
-{
-    qint64 pos = device->pos();
-    device->seek(0);
-    char buffer[256];
-    const char svg_tag[] = "<svg";
-
-    while (1) {
-        int size = device->read(buffer, 256);
-        for (int i=0; i<size - 5; ++i) {
-            if (!memcmp(buffer + i, svg_tag, 4)) {
-                if (buffer[i+4] == ' ' || buffer[i+4] == '\t'
-                    || buffer[i+4] == '\n' || buffer[i+4] == '\r')
-                {
-                    device->seek(pos);
-                    return true;
-                }
-            }
-        }
-        if (device->atEnd())
-            break;
-        device->seek(device->pos()-4);
-    }
-    device->seek(pos);
-    return false;
-}
 
 QSvgIOHandler::QSvgIOHandler()
-    : d(new QSvgIOHandlerPrivate())
+    : d(new QSvgIOHandlerPrivate(this))
 {
 
 }
@@ -129,7 +117,20 @@ QSvgIOHandler::~QSvgIOHandler()
 
 bool QSvgIOHandler::canRead() const
 {
-    return QSvgIOHandlerPrivate::findSvgTag(device());
+    if (!device())
+        return false;
+    if (d->loaded && !d->readDone)
+        return true;        // Will happen if we have been asked for the size
+
+    QByteArray buf = device()->peek(8);
+    if (buf.startsWith("\x1f\x8b")) {
+        setFormat("svgz");
+        return true;
+    } else if (buf.contains("<?xml") || buf.contains("<svg")) {
+        setFormat("svg");
+        return true;
+    }
+    return false;
 }
 
 
@@ -141,14 +142,41 @@ QByteArray QSvgIOHandler::name() const
 
 bool QSvgIOHandler::read(QImage *image)
 {
-    if (d->load(device())) {
-        *image = QImage(d->currentSize, QImage::Format_ARGB32_Premultiplied);
-        if (!d->currentSize.isEmpty()) {
-            image->fill(0x00000000);
+    if (!d->readDone && d->load(device())) {
+        bool xform = (d->clipRect.isValid() || d->scaledSize.isValid() || d->scaledClipRect.isValid());
+        QSize finalSize = d->defaultSize;
+        QRectF bounds;
+        if (xform && !d->defaultSize.isEmpty()) {
+            bounds = QRectF(QPointF(0,0), QSizeF(d->defaultSize));
+            QPoint tr1, tr2;
+            QSizeF sc(1, 1);
+            if (d->clipRect.isValid()) {
+                tr1 = -d->clipRect.topLeft();
+                finalSize = d->clipRect.size();
+            }
+            if (d->scaledSize.isValid()) {
+                sc = QSizeF(qreal(d->scaledSize.width()) / finalSize.width(),
+                            qreal(d->scaledSize.height()) / finalSize.height());
+                finalSize = d->scaledSize;
+            }
+            if (d->scaledClipRect.isValid()) {
+                tr2 = -d->scaledClipRect.topLeft();
+                finalSize = d->scaledClipRect.size();
+            }
+            QTransform t;
+            t.translate(tr2.x(), tr2.y());
+            t.scale(sc.width(), sc.height());
+            t.translate(tr1.x(), tr1.y());
+            bounds = t.mapRect(bounds);
+        }
+        *image = QImage(finalSize, QImage::Format_ARGB32_Premultiplied);
+        if (!finalSize.isEmpty()) {
+            image->fill(d->backColor.rgba());
             QPainter p(image);
-            d->r->render(&p);
+            d->r.render(&p, bounds);
             p.end();
         }
+        d->readDone = true;
         return true;
     }
 
@@ -166,8 +194,17 @@ QVariant QSvgIOHandler::option(ImageOption option) const
         d->load(device());
         return d->defaultSize;
         break;
+    case ClipRect:
+        return d->clipRect;
+        break;
     case ScaledSize:
-        return d->currentSize;
+        return d->scaledSize;
+        break;
+    case ScaledClipRect:
+        return d->scaledClipRect;
+        break;
+    case BackgroundColor:
+        return d->backColor;
         break;
     default:
         break;
@@ -179,12 +216,17 @@ QVariant QSvgIOHandler::option(ImageOption option) const
 void QSvgIOHandler::setOption(ImageOption option, const QVariant & value)
 {
     switch(option) {
-    case Size:
-        d->defaultSize = value.toSize();
-        d->currentSize = value.toSize();
+    case ClipRect:
+        d->clipRect = value.toRect();
         break;
     case ScaledSize:
-        d->currentSize = value.toSize();
+        d->scaledSize = value.toSize();
+        break;
+    case ScaledClipRect:
+        d->scaledClipRect = value.toRect();
+        break;
+    case BackgroundColor:
+        d->backColor = value.value<QColor>();
         break;
     default:
         break;
@@ -198,7 +240,10 @@ bool QSvgIOHandler::supportsOption(ImageOption option) const
     {
     case ImageFormat:
     case Size:
+    case ClipRect:
     case ScaledSize:
+    case ScaledClipRect:
+    case BackgroundColor:
         return true;
     default:
         break;
@@ -206,9 +251,11 @@ bool QSvgIOHandler::supportsOption(ImageOption option) const
     return false;
 }
 
+
 bool QSvgIOHandler::canRead(QIODevice *device)
 {
-    return QSvgIOHandlerPrivate::findSvgTag(device);
+    QByteArray buf = device->peek(8);
+    return buf.startsWith("\x1f\x8b") || buf.contains("<?xml") || buf.contains("<svg");
 }
 
 QT_END_NAMESPACE
diff --git a/tests/auto/qimagereader/images/corrupt.svg b/tests/auto/qimagereader/images/corrupt.svg
new file mode 100644
index 0000000..8747df0
--- /dev/null
+++ b/tests/auto/qimagereader/images/corrupt.svg
@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   version="1.0"
+   width="40px"
+   height="5px"
+   id="svg2"
+   sodipodi:version="0.32"
+   inkscape:version="0.46"
+   sodipodi:docname="test.svg"
+   inkscape:output_extension="org.inkscape.output.svg.inkscape">
+  <metadata
+     id="metadata7">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <sodipodi:namedview
+     inkscape:window-height="1005"
+     
\ No newline at end of file
diff --git a/tests/auto/qimagereader/images/corrupt.svgz b/tests/auto/qimagereader/images/corrupt.svgz
new file mode 100644
index 0000000..67fdcee
--- /dev/null
+++ b/tests/auto/qimagereader/images/corrupt.svgz
diff --git a/tests/auto/qimagereader/images/rect.svg b/tests/auto/qimagereader/images/rect.svg
new file mode 100644
index 0000000..c56549a
--- /dev/null
+++ b/tests/auto/qimagereader/images/rect.svg
@@ -0,0 +1,462 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+<svg
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:xlink="http://www.w3.org/1999/xlink"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   version="1.0"
+   width="128"
+   height="128"
+   viewBox="0 0 105.427 137.439"
+   id="Livello_1"
+   xml:space="preserve"
+   style="overflow:visible"><defs
+   id="defs2727"><linearGradient
+     x1="26.294399"
+     y1="11.6704"
+     x2="71.901901"
+     y2="133.0273"
+     id="linearGradient3352"
+     xlink:href="#XMLID_34_"
+     gradientUnits="userSpaceOnUse" /><linearGradient
+     x1="36.838902"
+     y1="7.7075"
+     x2="82.446297"
+     y2="129.0645"
+     id="linearGradient3354"
+     xlink:href="#XMLID_34_"
+     gradientUnits="userSpaceOnUse" /><linearGradient
+     x1="33.882301"
+     y1="23.583"
+     x2="39.972198"
+     y2="23.583"
+     id="XMLID_34_"
+     gradientUnits="userSpaceOnUse">
+				<stop
+   id="stop2672"
+   style="stop-color:#ff5d5d;stop-opacity:1"
+   offset="0" />
+				<stop
+   id="stop2674"
+   style="stop-color:#e20800;stop-opacity:1"
+   offset="1" />
+			</linearGradient><linearGradient
+     x1="33.882301"
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+   id="stop2578"
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+   offset="0" />
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+   id="stop2580"
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+     id="filter2854"><feGaussianBlur
+       id="feGaussianBlur2856"
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+<filter
+   id="AI_Sfocatura_1">
+	<feGaussianBlur
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+   stdDeviation="1" />
+</filter>
+<g
+   transform="translate(-3.2052027,3.2058836)"
+   id="g2547">
+	<g
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+			<path
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+	</g>
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+   style="fill:url(#XMLID_28_)" />
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+		<g
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+		<path
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+		<linearGradient
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+   id="path2708"
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+   gradientUnits="userSpaceOnUse">
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+   style="stop-color:#e20800;stop-opacity:1"
+   offset="1" />
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+		<path
+   d="M 55.486,74.959 C 56.672,72.393 59.054,70.485 60.737,69.362 C 62.481,68.2 63.851,66.777 64.296,64.886 C 64.97,62.01 61.962,58.818 58.532,62.043 C 56.897,57.628 52.759,59.142 52.082,62.018 C 51.638,63.908 52.23,65.792 53.275,67.609 C 54.281,69.364 55.565,72.132 55.486,74.959 z"
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diff --git a/tests/auto/qimagereader/images/rect.svgz b/tests/auto/qimagereader/images/rect.svgz
new file mode 100644
index 0000000..c2e193b
--- /dev/null
+++ b/tests/auto/qimagereader/images/rect.svgz
diff --git a/tests/auto/qimagereader/qimagereader.pro b/tests/auto/qimagereader/qimagereader.pro
index 5b061b0..402e94b 100644
--- a/tests/auto/qimagereader/qimagereader.pro
+++ b/tests/auto/qimagereader/qimagereader.pro
@@ -9,6 +9,7 @@ RESOURCES += qimagereader.qrc
 !contains(QT_CONFIG, no-jpeg):DEFINES += QTEST_HAVE_JPEG
 !contains(QT_CONFIG, no-mng):DEFINES += QTEST_HAVE_MNG
 !contains(QT_CONFIG, no-tiff):DEFINES += QTEST_HAVE_TIFF
+!contains(QT_CONFIG, no-svg):DEFINES += QTEST_HAVE_SVG
 
 win32-msvc:QMAKE_CXXFLAGS -= -Zm200
 win32-msvc:QMAKE_CXXFLAGS += -Zm800
diff --git a/tests/auto/qimagereader/qimagereader.qrc b/tests/auto/qimagereader/qimagereader.qrc
index bc48244..278427b 100644
--- a/tests/auto/qimagereader/qimagereader.qrc
+++ b/tests/auto/qimagereader/qimagereader.qrc
@@ -61,5 +61,9 @@
         <file>images/four-frames.gif</file>
         <file>images/qt-gif-anim.gif</file>
         <file>images/qt-gif-noanim.gif</file>
+        <file>images/rect.svg</file>
+        <file>images/rect.svgz</file>
+        <file>images/corrupt.svg</file>
+        <file>images/corrupt.svgz</file>
     </qresource>
 </RCC>
diff --git a/tests/auto/qimagereader/tst_qimagereader.cpp b/tests/auto/qimagereader/tst_qimagereader.cpp
index 99244c2..1b4c502 100644
--- a/tests/auto/qimagereader/tst_qimagereader.cpp
+++ b/tests/auto/qimagereader/tst_qimagereader.cpp
@@ -245,6 +245,10 @@ void tst_QImageReader::readImage_data()
     QTest::newRow("MNG: ball") << QString("ball.mng") << true << QByteArray("mng");
     QTest::newRow("MNG: fire") << QString("fire.mng") << true << QByteArray("mng");
 #endif
+#if defined QTEST_HAVE_SVG
+    QTest::newRow("SVG: rect") << QString("rect.svg") << true << QByteArray("svg");
+    QTest::newRow("SVGZ: rect") << QString("rect.svgz") << true << QByteArray("svgz");
+#endif
 }
 
 void tst_QImageReader::readImage()
@@ -294,7 +298,6 @@ void tst_QImageReader::readImage()
                 QVERIFY(!image2Reader.format().isEmpty());
         }
         QCOMPARE(image, image2);
-
         do {
             QVERIFY2(!image.isNull(), io.errorString().toLatin1().constData());
         } while (!(image = io.read()).isNull());
@@ -342,6 +345,10 @@ void tst_QImageReader::setScaledSize_data()
     QTest::newRow("MNG: ball") << "ball" << QSize(200, 200) << QByteArray("mng");
     QTest::newRow("MNG: fire") << "fire" << QSize(200, 200) << QByteArray("mng");
 #endif // QTEST_HAVE_MNG
+#if defined QTEST_HAVE_SVG
+    QTest::newRow("SVG: rect") << "rect" << QSize(200, 200) << QByteArray("svg");
+    QTest::newRow("SVGZ: rect") << "rect" << QSize(200, 200) << QByteArray("svgz");
+#endif
 }
 
 void tst_QImageReader::setScaledSize()
@@ -409,6 +416,10 @@ void tst_QImageReader::setClipRect_data()
     QTest::newRow("MNG: ball") << "ball" << QRect(0, 0, 50, 50) << QByteArray("mng");
     QTest::newRow("MNG: fire") << "fire" << QRect(0, 0, 50, 50) << QByteArray("mng");
 #endif // QTEST_HAVE_MNG
+#if defined QTEST_HAVE_SVG
+    QTest::newRow("SVG: rect") << "rect" << QRect(0, 0, 50, 50) << QByteArray("svg");
+    QTest::newRow("SVGZ: rect") << "rect" << QRect(0, 0, 50, 50) << QByteArray("svgz");
+#endif
 }
 
 void tst_QImageReader::setClipRect()
@@ -456,6 +467,10 @@ void tst_QImageReader::setScaledClipRect_data()
     QTest::newRow("MNG: ball") << "ball" << QRect(0, 0, 50, 50) << QByteArray("mng");
     QTest::newRow("MNG: fire") << "fire" << QRect(0, 0, 50, 50) << QByteArray("mng");
 #endif // QTEST_HAVE_MNG
+#if defined QTEST_HAVE_SVG
+    QTest::newRow("SVG: rect") << "rect" << QRect(0, 0, 50, 50) << QByteArray("svg");
+    QTest::newRow("SVGZ: rect") << "rect" << QRect(0, 0, 50, 50) << QByteArray("svgz");
+#endif
 }
 
 void tst_QImageReader::setScaledClipRect()
@@ -509,6 +524,8 @@ void tst_QImageReader::imageFormat_data()
     QTest::newRow("png-2") << QString("YCbCr_cmyk.png") << QByteArray("png") << QImage::Format_RGB32;
     QTest::newRow("mng-1") << QString("ball.mng") << QByteArray("mng") << QImage::Format_Invalid;
     QTest::newRow("mng-2") << QString("fire.mng") << QByteArray("mng") << QImage::Format_Invalid;
+    QTest::newRow("svg") << QString("rect.svg") << QByteArray("svg") << QImage::Format_ARGB32_Premultiplied;
+    QTest::newRow("svgz") << QString("rect.svgz") << QByteArray("svgz") << QImage::Format_ARGB32_Premultiplied;
 }
 
 void tst_QImageReader::imageFormat()
@@ -530,6 +547,10 @@ void tst_QImageReader::imageFormat()
 #ifndef QTEST_HAVE_MNG
             return;
 #endif // !QTEST_HAVE_MNG
+        if (QByteArray("svg") == format || QByteArray("svgz") == format)
+#ifndef QTEST_HAVE_SVG
+            return;
+#endif // !QTEST_HAVE_SVG
         QSKIP(("Qt does not support the " + format + " format.").constData(), SkipSingle);
     } else {
         QCOMPARE(QImageReader::imageFormat(prefix + fileName), format);
@@ -604,6 +625,10 @@ void tst_QImageReader::setBackgroundColor_data()
     QTest::newRow("MNG: ball") << QString("ball.mng") << QColor(Qt::yellow);
     QTest::newRow("MNG: fire") << QString("fire.mng") << QColor(Qt::gray);
 #endif
+#if defined QTEST_HAVE_SVG
+    QTest::newRow("SVG: rect") << QString("rect.svg") << QColor(Qt::darkGreen);
+    QTest::newRow("SVGZ: rect") << QString("rect.svgz") << QColor(Qt::darkGreen);
+#endif
 }
 
 void tst_QImageReader::setBackgroundColor()
@@ -641,6 +666,10 @@ void tst_QImageReader::supportsAnimation_data()
     QTest::newRow("MNG: ball") << QString("ball.mng") << true;
     QTest::newRow("MNG: fire") << QString("fire.mng") << true;
 #endif
+#if defined QTEST_HAVE_SVG
+    QTest::newRow("SVG: rect") << QString("rect.svg") << false;
+    QTest::newRow("SVGZ: rect") << QString("rect.svgz") << false;
+#endif
 }
 
 void tst_QImageReader::supportsAnimation()
@@ -979,6 +1008,10 @@ void tst_QImageReader::readFromDevice_data()
     QTest::newRow("mng-1") << QString("ball.mng") << QByteArray("mng");
     QTest::newRow("mng-2") << QString("fire.mng") << QByteArray("mng");
 #endif // QTEST_HAVE_MNG
+#if defined QTEST_HAVE_SVG
+    QTest::newRow("svg") << QString("rect.svg") << QByteArray("svg");
+    QTest::newRow("svgz") << QString("rect.svgz") << QByteArray("svgz");
+#endif
 }
 
 void tst_QImageReader::readFromDevice()
@@ -1059,6 +1092,10 @@ void tst_QImageReader::readFromFileAfterJunk_data()
     QTest::newRow("png") << QString("kollada.png") << QByteArray("png");
 //    QTest::newRow("mng-1") << QString("images/ball.mng") << QByteArray("mng");
 //    QTest::newRow("mng-2") << QString("images/fire.mng") << QByteArray("mng");
+#if defined QTEST_HAVE_SVG
+    QTest::newRow("svg") << QString("rect.svg") << QByteArray("svg");
+    QTest::newRow("svgz") << QString("rect.svgz") << QByteArray("svgz");
+#endif
 }
 
 void tst_QImageReader::readFromFileAfterJunk()
@@ -1081,7 +1118,7 @@ void tst_QImageReader::readFromFileAfterJunk()
     QVERIFY(!imageData.isNull());
 
     int iterations = 10;
-    if (format == "ppm" || format == "pbm" || format == "pgm")
+    if (format == "ppm" || format == "pbm" || format == "pgm" || format == "svg" || format == "svgz")
         iterations = 1;
 
     if (format == "mng" || !QImageWriter::supportedImageFormats().contains(format)) {
@@ -1233,6 +1270,20 @@ void tst_QImageReader::readFromResources_data()
                                      << QByteArray("mng") << QSize(32, 32)
                                      << QString("");
 #endif
+#ifdef QTEST_HAVE_SVG
+    QTest::newRow("rect.svg") << QString("rect.svg")
+                                     << QByteArray("svg") << QSize(105, 137)
+                                     << QString("");
+    QTest::newRow("rect.svgz") << QString("rect.svgz")
+                                     << QByteArray("svgz") << QSize(105, 137)
+                                     << QString("");
+    QTest::newRow("corrupt.svg") << QString("corrupt.svg")
+                                     << QByteArray("svg") << QSize(0, 0)
+                                     << QString("");
+    QTest::newRow("corrupt.svgz") << QString("corrupt.svgz")
+                                     << QByteArray("svgz") << QSize(0, 0)
+                                     << QString("");
+#endif
     QTest::newRow("image.pbm") << QString("image.pbm")
                                       << QByteArray("pbm") << QSize(16, 6)
                                       << QString("");
@@ -1405,6 +1456,10 @@ void tst_QImageReader::readCorruptImage_data()
 #if defined QTEST_HAVE_TIFF
     QTest::newRow("corrupt tiff") << QString("corrupt-data.tif") << true << QString("");
 #endif
+#if defined QTEST_HAVE_SVG
+    QTest::newRow("corrupt svg") << QString("corrupt.svg") << true << QString("");
+    QTest::newRow("corrupt svgz") << QString("corrupt.svgz") << true << QString("");
+#endif
 }
 
 void tst_QImageReader::readCorruptImage()
@@ -1753,6 +1808,11 @@ void tst_QImageReader::testIgnoresFormatAndExtension_data()
 #if defined QTEST_HAVE_TIFF
     QTest::newRow("image_100dpi.tif") << "image_100dpi" << "tif" << "tiff";
 #endif
+
+#if defined QTEST_HAVE_SVG
+    QTest::newRow("rect.svg") << "rect" << "svg" << "svg";
+    QTest::newRow("rect.svgz") << "rect" << "svgz" << "svgz";
+#endif
 }