svgio visitor, add draw commands and create the from svg

Adds a visitor for svgio for visiting svg nodes and create something
useful from them.

Basic draw commands - a tree of draw commands (with sub-pixel
precision support) just to store a simple definition for drawing.

Adds a svg draw visitor and create draw commands from the svg
structure and expose the commands through UNO API.

Change-Id: I073e891a2cffdd76d4e3b838590e3a19c998e9bf
Reviewed-on: https://gerrit.libreoffice.org/68770
Tested-by: Jenkins
Reviewed-by: Tomaž Vajngerl <quikee@gmail.com>

1 files changed, 102 insertions, 0 deletions

diff --git a/svgio/qa/cppunit/SvgRead.cxx b/svgio/qa/cppunit/SvgRead.cxx
new file mode 100644
index 000000000000..9077f92db7b6
--- /dev/null
+++ b/svgio/qa/cppunit/SvgRead.cxx
@@ -0,0 +1,102 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#include <sal/config.h>
+
+#include <test/bootstrapfixture.hxx>
+
+#include <memory>
+
+#include <comphelper/seqstream.hxx>
+#include <comphelper/sequence.hxx>
+#include <comphelper/processfactory.hxx>
+#include <tools/stream.hxx>
+
+#include <com/sun/star/graphic/SvgTools.hpp>
+#include <com/sun/star/graphic/Primitive2DTools.hpp>
+#include <com/sun/star/graphic/XPrimitive2D.hpp>
+
+#include <drawinglayer/primitive2d/baseprimitive2d.hxx>
+
+#include <com/sun/star/graphic/XSvgParser.hpp>
+#include <com/sun/star/lang/XServiceInfo.hpp>
+#include <com/sun/star/lang/XInitialization.hpp>
+#include <com/sun/star/xml/sax/XParser.hpp>
+#include <com/sun/star/xml/sax/Parser.hpp>
+#include <com/sun/star/xml/sax/InputSource.hpp>
+#include <cppuhelper/implbase2.hxx>
+#include <cppuhelper/supportsservice.hxx>
+#include <comphelper/sequence.hxx>
+
+#include <svgdocumenthandler.hxx>
+#include <svgrectnode.hxx>
+#include <svgsvgnode.hxx>
+#include <svggnode.hxx>
+
+#include <basegfx/DrawCommands.hxx>
+
+namespace
+{
+using namespace css;
+
+class Test : public test::BootstrapFixture
+{
+    void test();
+    uno::Reference<io::XInputStream> parseSvg(const OUString& aSource);
+
+public:
+    CPPUNIT_TEST_SUITE(Test);
+    CPPUNIT_TEST(test);
+    CPPUNIT_TEST_SUITE_END();
+};
+
+uno::Reference<io::XInputStream> Test::parseSvg(const OUString& aSource)
+{
+    SvFileStream aFileStream(aSource, StreamMode::READ);
+    std::size_t nSize = aFileStream.remainingSize();
+    std::unique_ptr<sal_Int8[]> pBuffer(new sal_Int8[nSize + 1]);
+    aFileStream.ReadBytes(pBuffer.get(), nSize);
+    pBuffer[nSize] = 0;
+
+    uno::Sequence<sal_Int8> aData(pBuffer.get(), nSize + 1);
+    uno::Reference<io::XInputStream> aInputStream(new comphelper::SequenceInputStream(aData));
+
+    return aInputStream;
+}
+
+void Test::test()
+{
+    OUString aSvgFile = "/svgio/qa/cppunit/data/Rect.svg";
+    OUString aUrl = m_directories.getURLFromSrc(aSvgFile);
+    OUString aPath = m_directories.getPathFromSrc(aSvgFile);
+
+    uno::Reference<io::XInputStream> xStream = parseSvg(aUrl);
+    CPPUNIT_ASSERT(xStream.is());
+
+    uno::Reference<uno::XComponentContext> xContext(comphelper::getProcessComponentContext());
+    const uno::Reference<graphic::XSvgParser> xSvgParser = graphic::SvgTools::create(xContext);
+
+    uno::Any aAny = xSvgParser->getDrawCommands(xStream, aPath);
+    CPPUNIT_ASSERT(aAny.has<sal_uInt64>());
+    DrawRoot* pDrawRoot = reinterpret_cast<DrawRoot*>(aAny.get<sal_uInt64>());
+
+    CPPUNIT_ASSERT_EQUAL(size_t(1), pDrawRoot->maChildren.size());
+    CPPUNIT_ASSERT_EQUAL(basegfx::B2DRange(0, 0, 120, 120), pDrawRoot->maRectangle);
+
+    CPPUNIT_ASSERT_EQUAL(DrawCommandType::Rectangle, pDrawRoot->maChildren[0]->getType());
+    CPPUNIT_ASSERT_EQUAL(basegfx::B2DRange(10, 10, 110, 110),
+                         static_cast<DrawRectangle*>(pDrawRoot->maChildren[0].get())->maRectangle);
+}
+
+CPPUNIT_TEST_SUITE_REGISTRATION(Test);
+}
+
+CPPUNIT_PLUGIN_IMPLEMENT();
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */