1 files changed, 115 insertions, 0 deletions
diff --git a/svgio/inc/SvgNumber.hxx b/svgio/inc/SvgNumber.hxx
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+++ b/svgio/inc/SvgNumber.hxx
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+/* -*- 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 .
+ */
+
+#pragma once
+
+#include <basegfx/range/b2drange.hxx>
+#include <vector>
+
+namespace svgio::svgreader
+{
+
+// recommended value for this device dependent unit, see CSS2 section 4.3.2 Lengths
+constexpr const double F_SVG_PIXEL_PER_INCH = 96.0;
+
+enum class NumberType
+{
+    xcoordinate,
+    ycoordinate,
+    length
+};
+
+class InfoProvider
+{
+public:
+    virtual ~InfoProvider() {}
+    virtual basegfx::B2DRange getCurrentViewPort() const = 0;
+    /// return font size of node inherited from parents
+    virtual double getCurrentFontSizeInherited() const = 0;
+    /// return xheight of node inherited from parents
+    virtual double getCurrentXHeightInherited() const = 0;
+};
+
+enum class SvgUnit
+{
+    em = 0,    // relative to current font size
+    ex,        // relative to current x-height
+
+    px,        // 'user unit'
+    pt,        // points, 1.25 px
+    pc,        // 15.0 px
+    cm,        // 35.43307 px
+    mm,        // 3.543307 px
+    in,        // 90 px
+
+    percent,   // relative to range
+    none       // for stroke-miterlimit, which has no unit
+};
+
+class SvgNumber
+{
+private:
+    double      mfNumber;
+    SvgUnit     meUnit;
+
+    bool        mbSet : 1;
+
+public:
+    SvgNumber()
+    :   mfNumber(0.0),
+        meUnit(SvgUnit::px),
+        mbSet(false)
+    {
+    }
+
+    SvgNumber(double fNum, SvgUnit aSvgUnit = SvgUnit::px, bool bSet = true)
+    :   mfNumber(fNum),
+        meUnit(aSvgUnit),
+        mbSet(bSet)
+    {
+    }
+
+    double getNumber() const
+    {
+        return mfNumber;
+    }
+
+    SvgUnit getUnit() const
+    {
+        return meUnit;
+    }
+
+    bool isSet() const
+    {
+        return mbSet;
+    }
+
+    bool isPositive() const;
+
+    // Only usable in cases, when the unit is not SvgUnit::percent, otherwise use method solve
+    double solveNonPercentage(const InfoProvider& rInfoProvider) const;
+
+    double solve(const InfoProvider& rInfoProvider, NumberType aNumberType = NumberType::length) const;
+};
+
+typedef std::vector<SvgNumber> SvgNumberVector;
+
+} // end of namespace svgio::svgreader
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */