解析svg图片时,允许不带属性的<style>的节点

根据https://www.w3.org/TR/SVG/styling.html#StyleElement，`type`属性可以省略。

Signed-off-by: tangjie02 <tangjie02@kylinsec.com.cn>

0001-Allow-style-without-type-attribute.patch

@@ -0,0 +1,76 @@
+From cb6fce016d88622cc361a9f609518db753502e46 Mon Sep 17 00:00:00 2001
+From: Chih-Hsuan Yen <yen@chyen.cc>
+Date: Wed, 23 Jan 2019 16:41:35 +0800
+Subject: [PATCH] Allow <style> without type attribute
+
+According to https://www.w3.org/TR/SVG/styling.html#StyleElement, `type`
+can be omitted.
+
+> If the attribute is not specified, then the style sheet language is assumed to be CSS.
+
+Original-Author: Christoph Feck
+Fixes: QTBUG-58326
+Fixes: QTBUG-69378
+Change-Id: Ic3d0e8db99da8c81e5a01c0dda33fb38428e38d5
+Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
+Reviewed-by: Andy Shaw <andy.shaw@qt.io>
+---
+ src/svg/qsvghandler.cpp                      |  2 +-
+ tests/auto/qsvgrenderer/tst_qsvgrenderer.cpp | 22 ++++++++++++++++++++
+ 2 files changed, 23 insertions(+), 1 deletion(-)
+
+diff --git a/src/svg/qsvghandler.cpp b/src/svg/qsvghandler.cpp
+index 6d2e279..132c4ec 100644
+--- a/src/svg/qsvghandler.cpp
++++ b/src/svg/qsvghandler.cpp
+@@ -3203,7 +3203,7 @@ static bool parseStyleNode(QSvgNode *parent,
+     Q_UNUSED(handler)
+ #else
+     const QStringRef type = attributes.value(QLatin1String("type"));
+-    if (type.compare(QLatin1String("text/css"), Qt::CaseInsensitive) == 0)
++    if (type.compare(QLatin1String("text/css"), Qt::CaseInsensitive) == 0 || type.isNull())
+         handler->setInStyle(true);
+ #endif
+ 
+diff --git a/tests/auto/qsvgrenderer/tst_qsvgrenderer.cpp b/tests/auto/qsvgrenderer/tst_qsvgrenderer.cpp
+index 87d24c7..1bc8b94 100644
+--- a/tests/auto/qsvgrenderer/tst_qsvgrenderer.cpp
++++ b/tests/auto/qsvgrenderer/tst_qsvgrenderer.cpp
+@@ -74,6 +74,7 @@ private slots:
+     void testStopOffsetOpacity();
+     void testUseElement();
+     void smallFont();
++    void styleSheet();
+ 
+ #ifndef QT_NO_COMPRESS
+     void testGzLoading();
+@@ -1376,5 +1377,26 @@ void tst_QSvgRenderer::smallFont()
+     QVERIFY(images[0] != images[1]);
+ }
+ 
++void tst_QSvgRenderer::styleSheet()
++{
++    static const char *svgs[] = { "<svg><style type=\"text/css\">.cls {fill:#ff0000;}</style><rect class=\"cls\" x = \"10\" y = \"10\" width = \"30\" height = \"30\"/></svg>",
++                                  "<svg><style>.cls {fill:#ff0000;}</style><rect class=\"cls\" x = \"10\" y = \"10\" width = \"30\" height = \"30\"/></svg>",
++    };
++    const int COUNT = sizeof(svgs) / sizeof(svgs[0]);
++    QImage images[COUNT];
++    QPainter p;
++
++    for (int i = 0; i < COUNT; ++i) {
++        QByteArray data(svgs[i]);
++        QSvgRenderer renderer(data);
++        images[i] = QImage(50, 50, QImage::Format_ARGB32_Premultiplied);
++        images[i].fill(-1);
++        p.begin(&images[i]);
++        renderer.render(&p);
++        p.end();
++    }
++    QCOMPARE(images[0], images[1]);
++}
++
+ QTEST_MAIN(tst_QSvgRenderer)
+ #include "tst_qsvgrenderer.moc"
+-- 
+2.18.1
+

qt5-qtsvg.spec

@@ -1,11 +1,12 @@
 Name:              qt5-qtsvg
 Version:           5.11.1
-Release:           5
+Release:           6
 Summary:           Qt GUI toolkit for rendering and displaying SVG
 License:           LGPLv2 with exceptions or GPLv3 with exceptions
 Url:               http://www.qt.io
 Source0:           https://download.qt.io/new_archive/qt/5.11/%{version}/submodules/qtsvg-everywhere-src-%{version}.tar.xz
 Patch0001:        qtsvg-opensource-src-5.6.0-beta1-example-install.patch
+Patch0002:        0001-Allow-style-without-type-attribute.patch
 BuildRequires:    qt5-qtbase-devel >= %{version} pkgconfig(zlib) qt5-qtbase-private-devel
 %{?_qt5:Requires: %{_qt5} = %{_qt5_version}}
 
@@ -60,6 +61,9 @@ popd
 %{_qt5_archdatadir}/mkspecs/modules/qt_lib_svg*.pri
 
 %changelog
+* Wed Dec 08 2021 liuxinhao <liuxinhao@kylinos.com.cn> - 5.11.1-6
+- Allow style without type attribute
+
 * Mon Sep 14 2020 liuweibo <liuweibo10@huawei.com> - 5.11.1-5
 - Fix Source0