1 files changed, 146 insertions, 0 deletions
diff --git a/svgio/source/svgreader/svgfedropshadownode.cxx b/svgio/source/svgreader/svgfedropshadownode.cxx
new file mode 100644
index 0000000000..c968f51f5c
--- /dev/null
+++ b/svgio/source/svgreader/svgfedropshadownode.cxx
@@ -0,0 +1,146 @@
+/* -*- 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/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <drawinglayer/primitive2d/Primitive2DContainer.hxx>
+#include <drawinglayer/primitive2d/shadowprimitive2d.hxx>
+#include <drawinglayer/primitive2d/unifiedtransparenceprimitive2d.hxx>
+#include <basegfx/polygon/b2dpolygontools.hxx>
+#include <svgfedropshadownode.hxx>
+#include <o3tl/string_view.hxx>
+
+namespace svgio::svgreader
+{
+SvgFeDropShadowNode::SvgFeDropShadowNode(SvgDocument& rDocument, SvgNode* pParent)
+    : SvgFilterNode(SVGToken::FeDropShadow, rDocument, pParent)
+    , maDx(0.0)
+    , maDy(0.0)
+    , maStdDeviation(0.0)
+    , maFloodColor(SvgPaint())
+    , maFloodOpacity(1.0)
+{
+}
+
+SvgFeDropShadowNode::~SvgFeDropShadowNode() {}
+
+void SvgFeDropShadowNode::parseAttribute(SVGToken aSVGToken, const OUString& aContent)
+{
+    // parse own
+    switch (aSVGToken)
+    {
+        case SVGToken::Style:
+        {
+            readLocalCssStyle(aContent);
+            break;
+        }
+        case SVGToken::Dx:
+        {
+            SvgNumber aNum;
+
+            if (readSingleNumber(aContent, aNum))
+            {
+                maDx = aNum;
+            }
+            break;
+        }
+        case SVGToken::Dy:
+        {
+            SvgNumber aNum;
+
+            if (readSingleNumber(aContent, aNum))
+            {
+                maDy = aNum;
+            }
+            break;
+        }
+        case SVGToken::StdDeviation:
+        {
+            SvgNumber aNum;
+
+            if (readSingleNumber(aContent, aNum))
+            {
+                maStdDeviation = aNum;
+            }
+            break;
+        }
+        case SVGToken::FloodColor:
+        {
+            SvgPaint aSvgPaint;
+            OUString aURL;
+            SvgNumber aOpacity;
+
+            if (readSvgPaint(aContent, aSvgPaint, aURL, aOpacity))
+            {
+                maFloodColor = aSvgPaint;
+            }
+            break;
+        }
+        case SVGToken::FloodOpacity:
+        {
+            SvgNumber aNum;
+
+            if (readSingleNumber(aContent, aNum))
+            {
+                maFloodOpacity = SvgNumber(std::clamp(aNum.getNumber(), 0.0, 1.0), aNum.getUnit(),
+                                           aNum.isSet());
+            }
+            break;
+        }
+
+        default:
+        {
+            break;
+        }
+    }
+}
+
+void SvgFeDropShadowNode::apply(drawinglayer::primitive2d::Primitive2DContainer& rTarget) const
+{
+    basegfx::B2DHomMatrix aTransform;
+    if (maDx.isSet() || maDy.isSet())
+    {
+        aTransform.translate(maDx.solve(*this, NumberType::xcoordinate),
+                             maDy.solve(*this, NumberType::ycoordinate));
+    }
+
+    drawinglayer::primitive2d::Primitive2DContainer aTempTarget;
+
+    // Create the shadow
+    aTempTarget.append(drawinglayer::primitive2d::Primitive2DReference(
+        new drawinglayer::primitive2d::ShadowPrimitive2D(
+            aTransform, maFloodColor.getBColor(), maStdDeviation.getNumber(),
+            drawinglayer::primitive2d::Primitive2DContainer(rTarget))));
+
+    const double fOpacity(maFloodOpacity.solve(*this));
+    if (basegfx::fTools::less(fOpacity, 1.0))
+    {
+        // Apply transparence to the shadow
+        aTempTarget.append(drawinglayer::primitive2d::Primitive2DReference(
+            new drawinglayer::primitive2d::UnifiedTransparencePrimitive2D(std::move(aTempTarget),
+                                                                          1.0 - fOpacity)));
+    }
+
+    // Append the original target
+    aTempTarget.append(rTarget);
+
+    rTarget = aTempTarget;
+}
+
+} // end of namespace svgio::svgreader
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */