Adding upstream version 1.2.2.upstream/1.2.2upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 2126 insertions, 0 deletions

diff --git a/src/extension/internal/odf.cpp b/src/extension/internal/odf.cpp
new file mode 100644
index 0000000..4b10711
--- /dev/null
+++ b/src/extension/internal/odf.cpp
@@ -0,0 +1,2126 @@
+// SPDX-License-Identifier: LGPL-2.1-or-later
+/** @file
+ * OpenDocument (drawing) input and output
+ *//*
+ * Authors:
+ *   Bob Jamison
+ *   Abhishek Sharma
+ *   Kris De Gussem
+ *
+ * Copyright (C) 2018 Authors
+ * Released under GNU LGPL v2.1+, read the file 'COPYING' for more information.
+ */
+/*
+ * This is an an entry in the extensions mechanism to begin to enable
+ * the inputting and outputting of OpenDocument Format (ODF) files from
+ * within Inkscape.  Although the initial implementations will be very lossy
+ * due to the differences in the models of SVG and ODF, they will hopefully
+ * improve greatly with time.  People should consider this to be a framework
+ * that can be continuously upgraded for ever improving fidelity.  Potential
+ * developers should especially look in preprocess() and writeTree() to see how
+ * the SVG tree is scanned, read, translated, and then written to ODF.
+ *
+ * http://www.w3.org/TR/2004/REC-DOM-Level-3-Core-20040407/idl-definitions.html
+ *
+ */
+
+#include "odf.h"
+
+//# System includes
+#include <cstdio>
+#include <ctime>
+#include <vector>
+#include <cmath>
+
+//# Inkscape includes
+#include "clear-n_.h"
+#include "inkscape.h"
+#include "display/curve.h"
+#include <2geom/pathvector.h>
+#include <2geom/curves.h>
+#include <2geom/transforms.h>
+#include <helper/geom.h>
+#include "helper/geom-curves.h"
+#include "extension/system.h"
+
+#include "xml/repr.h"
+#include "xml/attribute-record.h"
+#include "object/sp-image.h"
+#include "object/sp-gradient.h"
+#include "object/sp-stop.h"
+#include "object/sp-linear-gradient.h"
+#include "object/sp-radial-gradient.h"
+#include "object/sp-root.h"
+#include "object/sp-path.h"
+#include "object/sp-text.h"
+#include "object/sp-flowtext.h"
+#include "object/uri.h"
+#include "style.h"
+
+#include "svg/svg.h"
+#include "text-editing.h"
+#include "util/units.h"
+
+
+#include "inkscape-version.h"
+#include "document.h"
+#include "extension/extension.h"
+
+#include "io/stream/bufferstream.h"
+#include "io/stream/stringstream.h"
+#include "io/sys.h"
+#include <util/ziptool.h>
+#include <iomanip>
+namespace Inkscape
+{
+namespace Extension
+{
+namespace Internal
+{
+//# Shorthand notation
+typedef Inkscape::IO::BufferOutputStream BufferOutputStream;
+typedef Inkscape::IO::OutputStreamWriter OutputStreamWriter;
+typedef Inkscape::IO::StringOutputStream StringOutputStream;
+
+
+//########################################################################
+//# C L A S S    SingularValueDecomposition
+//########################################################################
+#include <cmath>
+
+class SVDMatrix
+{
+public:
+
+    SVDMatrix()
+        {
+        init();
+        }
+
+    SVDMatrix(unsigned int rowSize, unsigned int colSize)
+        {
+        init();
+        rows = rowSize;
+        cols = colSize;
+        size = rows * cols;
+        d    = new double[size];
+        for (unsigned int i=0 ; i<size ; i++)
+            d[i] = 0.0;
+        }
+
+    SVDMatrix(double *vals, unsigned int rowSize, unsigned int colSize)
+        {
+        init();
+        rows = rowSize;
+        cols = colSize;
+        size = rows * cols;
+        d    = new double[size];
+        for (unsigned int i=0 ; i<size ; i++)
+            d[i] = vals[i];
+        }
+
+
+    SVDMatrix(const SVDMatrix &other)
+        {
+        init();
+        assign(other);
+        }
+
+    SVDMatrix &operator=(const SVDMatrix &other)
+        {
+        assign(other);
+        return *this;
+        }
+
+    virtual ~SVDMatrix()
+        {
+        delete[] d;
+        }
+
+     double& operator() (unsigned int row, unsigned int col)
+         {
+         if (row >= rows || col >= cols)
+             return badval;
+         return d[cols*row + col];
+         }
+
+     double operator() (unsigned int row, unsigned int col) const
+         {
+         if (row >= rows || col >= cols)
+             return badval;
+         return d[cols*row + col];
+         }
+
+     unsigned int getRows()
+         {
+         return rows;
+         }
+
+     unsigned int getCols()
+         {
+         return cols;
+         }
+
+     SVDMatrix multiply(const SVDMatrix &other)
+         {
+         if (cols != other.rows)
+             {
+             SVDMatrix dummy;
+             return dummy;
+             }
+         SVDMatrix result(rows, other.cols);
+         for (unsigned int i=0 ; i<rows ; i++)
+             {
+             for (unsigned int j=0 ; j<other.cols ; j++)
+             {
+                 double sum = 0.0;
+                 for (unsigned int k=0 ; k<cols ; k++)
+                     {
+                     //sum += a[i][k] * b[k][j];
+                     sum += d[i*cols +k] * other(k, j);
+                     }
+                 result(i, j) = sum;
+                 }
+
+             }
+         return result;
+         }
+
+     SVDMatrix transpose()
+         {
+         SVDMatrix result(cols, rows);
+         for (unsigned int i=0 ; i<rows ; i++){
+             for (unsigned int j=0 ; j<cols ; j++){
+                 result(j, i) = d[i*cols + j];
+             }
+         }
+         return result;
+         }
+
+private:
+
+
+    virtual void init()
+        {
+        badval = 0.0;
+        d      = nullptr;
+        rows   = 0;
+        cols   = 0;
+        size   = 0;
+        }
+
+     void assign(const SVDMatrix &other)
+        {
+        if (d)
+            {
+            delete[] d;
+            d = nullptr;
+            }
+        rows = other.rows;
+        cols = other.cols;
+        size = other.size;
+        badval = other.badval;
+        d = new double[size];
+        for (unsigned int i=0 ; i<size ; i++){
+            d[i] = other.d[i];
+            }
+        }
+
+    double badval;
+
+    double *d;
+    unsigned int rows;
+    unsigned int cols;
+    unsigned int size;
+};
+
+
+
+/**
+ *
+ * ====================================================
+ *
+ * NOTE:
+ * This class is ported almost verbatim from the public domain
+ * JAMA Matrix package.  It is modified to handle only 3x3 matrices
+ * and our Geom::Affine affine transform class.  We give full
+ * attribution to them, along with many thanks.  JAMA can be found at:
+ *     http://math.nist.gov/javanumerics/jama
+ *
+ * ====================================================
+ *
+ * Singular Value Decomposition.
+ * <P>
+ * For an m-by-n matrix A with m >= n, the singular value decomposition is
+ * an m-by-n orthogonal matrix U, an n-by-n diagonal matrix S, and
+ * an n-by-n orthogonal matrix V so that A = U*S*V'.
+ * <P>
+ * The singular values, sigma[k] = S[k][k], are ordered so that
+ * sigma[0] >= sigma[1] >= ... >= sigma[n-1].
+ * <P>
+ * The singular value decomposition always exists, so the constructor will
+ * never fail.  The matrix condition number and the effective numerical
+ * rank can be computed from this decomposition.
+ */
+class SingularValueDecomposition
+{
+public:
+
+   /** Construct the singular value decomposition
+   @param A    Rectangular matrix
+   @return     Structure to access U, S and V.
+   */
+
+    SingularValueDecomposition (const SVDMatrix &mat) :
+        A (mat),
+        U (),
+        s (nullptr),
+        s_size (0),
+        V ()
+        {
+        calculate();
+        }
+
+    virtual ~SingularValueDecomposition()
+        {
+        delete[] s;
+        }
+
+    /**
+     * Return the left singular vectors
+     * @return     U
+     */
+    SVDMatrix &getU();
+
+    /**
+     * Return the right singular vectors
+     * @return     V
+     */
+    SVDMatrix &getV();
+
+    /**
+     *  Return the s[index] value
+     */    double getS(unsigned int index);
+
+    /**
+     * Two norm
+     * @return max(S)
+     */
+    double norm2();
+
+    /**
+     * Two norm condition number
+     *  @return max(S)/min(S)
+     */
+    double cond();
+
+    /**
+     *  Effective numerical matrix rank
+     *  @return     Number of nonnegligible singular values.
+     */
+    int rank();
+
+private:
+
+      void calculate();
+
+      SVDMatrix A;
+      SVDMatrix U;
+      double *s;
+      unsigned int s_size;
+      SVDMatrix V;
+
+};
+
+
+static double svd_hypot(double a, double b)
+{
+    double r;
+
+    if (fabs(a) > fabs(b))
+        {
+        r = b/a;
+        r = fabs(a) * sqrt(1+r*r);
+        }
+    else if (b != 0)
+        {
+        r = a/b;
+        r = fabs(b) * sqrt(1+r*r);
+        }
+    else
+        {
+        r = 0.0;
+        }
+    return r;
+}
+
+
+
+void SingularValueDecomposition::calculate()
+{
+      // Initialize.
+      int m = A.getRows();
+      int n = A.getCols();
+
+      int nu = (m > n) ? m : n;
+      s_size = (m+1 < n) ? m+1 : n;
+      s = new double[s_size];
+      U = SVDMatrix(m, nu);
+      V = SVDMatrix(n, n);
+      double *e = new double[n];
+      double *work = new double[m];
+      bool wantu = true;
+      bool wantv = true;
+
+      // Reduce A to bidiagonal form, storing the diagonal elements
+      // in s and the super-diagonal elements in e.
+
+      int nct = (m-1<n) ? m-1 : n;
+      int nrtx = (n-2<m) ? n-2 : m;
+      int nrt = (nrtx>0) ? nrtx : 0;
+      for (int k = 0; k < 2; k++) {
+         if (k < nct) {
+
+            // Compute the transformation for the k-th column and
+            // place the k-th diagonal in s[k].
+            // Compute 2-norm of k-th column without under/overflow.
+            s[k] = 0;
+            for (int i = k; i < m; i++) {
+               s[k] = svd_hypot(s[k],A(i, k));
+            }
+            if (s[k] != 0.0) {
+               if (A(k, k) < 0.0) {
+                  s[k] = -s[k];
+               }
+               for (int i = k; i < m; i++) {
+                  A(i, k) /= s[k];
+               }
+               A(k, k) += 1.0;
+            }
+            s[k] = -s[k];
+         }
+         for (int j = k+1; j < n; j++) {
+            if ((k < nct) & (s[k] != 0.0))  {
+
+            // Apply the transformation.
+
+               double t = 0;
+               for (int i = k; i < m; i++) {
+                  t += A(i, k) * A(i, j);
+               }
+               t = -t/A(k, k);
+               for (int i = k; i < m; i++) {
+                  A(i, j) += t*A(i, k);
+               }
+            }
+
+            // Place the k-th row of A into e for the
+            // subsequent calculation of the row transformation.
+
+            e[j] = A(k, j);
+         }
+         if (wantu & (k < nct)) {
+
+            // Place the transformation in U for subsequent back
+            // multiplication.
+
+            for (int i = k; i < m; i++) {
+               U(i, k) = A(i, k);
+            }
+         }
+         if (k < nrt) {
+
+            // Compute the k-th row transformation and place the
+            // k-th super-diagonal in e[k].
+            // Compute 2-norm without under/overflow.
+            e[k] = 0;
+            for (int i = k+1; i < n; i++) {
+               e[k] = svd_hypot(e[k],e[i]);
+            }
+            if (e[k] != 0.0) {
+               if (e[k+1] < 0.0) {
+                  e[k] = -e[k];
+               }
+               for (int i = k+1; i < n; i++) {
+                  e[i] /= e[k];
+               }
+               e[k+1] += 1.0;
+            }
+            e[k] = -e[k];
+            if ((k+1 < m) & (e[k] != 0.0)) {
+
+            // Apply the transformation.
+
+               for (int i = k+1; i < m; i++) {
+                  work[i] = 0.0;
+               }
+               for (int j = k+1; j < n; j++) {
+                  for (int i = k+1; i < m; i++) {
+                     work[i] += e[j]*A(i, j);
+                  }
+               }
+               for (int j = k+1; j < n; j++) {
+                  double t = -e[j]/e[k+1];
+                  for (int i = k+1; i < m; i++) {
+                     A(i, j) += t*work[i];
+                  }
+               }
+            }
+            if (wantv) {
+
+            // Place the transformation in V for subsequent
+            // back multiplication.
+
+               for (int i = k+1; i < n; i++) {
+                  V(i, k) = e[i];
+               }
+            }
+         }
+      }
+
+      // Set up the final bidiagonal matrix or order p.
+
+      int p = (n < m+1) ? n : m+1;
+      if (nct < n) {
+         s[nct] = A(nct, nct);
+      }
+      if (m < p) {
+         s[p-1] = 0.0;
+      }
+      if (nrt+1 < p) {
+         e[nrt] = A(nrt, p-1);
+      }
+      e[p-1] = 0.0;
+
+      // If required, generate U.
+
+      if (wantu) {
+         for (int j = nct; j < nu; j++) {
+            for (int i = 0; i < m; i++) {
+               U(i, j) = 0.0;
+            }
+            U(j, j) = 1.0;
+         }
+         for (int k = nct-1; k >= 0; k--) {
+            if (s[k] != 0.0) {
+               for (int j = k+1; j < nu; j++) {
+                  double t = 0;
+                  for (int i = k; i < m; i++) {
+                     t += U(i, k)*U(i, j);
+                  }
+                  t = -t/U(k, k);
+                  for (int i = k; i < m; i++) {
+                     U(i, j) += t*U(i, k);
+                  }
+               }
+               for (int i = k; i < m; i++ ) {
+                  U(i, k) = -U(i, k);
+               }
+               U(k, k) = 1.0 + U(k, k);
+               for (int i = 0; i < k-1; i++) {
+                  U(i, k) = 0.0;
+               }
+            } else {
+               for (int i = 0; i < m; i++) {
+                  U(i, k) = 0.0;
+               }
+               U(k, k) = 1.0;
+            }
+         }
+      }
+
+      // If required, generate V.
+
+      if (wantv) {
+         for (int k = n-1; k >= 0; k--) {
+            if ((k < nrt) & (e[k] != 0.0)) {
+               for (int j = k+1; j < nu; j++) {
+                  double t = 0;
+                  for (int i = k+1; i < n; i++) {
+                     t += V(i, k)*V(i, j);
+                  }
+                  t = -t/V(k+1, k);
+                  for (int i = k+1; i < n; i++) {
+                     V(i, j) += t*V(i, k);
+                  }
+               }
+            }
+            for (int i = 0; i < n; i++) {
+               V(i, k) = 0.0;
+            }
+            V(k, k) = 1.0;
+         }
+      }
+
+      // Main iteration loop for the singular values.
+
+      int pp = p-1;
+      //double eps = pow(2.0,-52.0);
+      //double tiny = pow(2.0,-966.0);
+      //let's just calculate these now
+      //a double can be e ± 308.25, so this is safe
+      double eps = 2.22e-16;
+      double tiny = 1.6e-291;
+      while (p > 0) {
+         int k,kase;
+
+         // Here is where a test for too many iterations would go.
+
+         // This section of the program inspects for
+         // negligible elements in the s and e arrays.  On
+         // completion the variables kase and k are set as follows.
+
+         // kase = 1     if s(p) and e[k-1] are negligible and k<p
+         // kase = 2     if s(k) is negligible and k<p
+         // kase = 3     if e[k-1] is negligible, k<p, and
+         //              s(k), ..., s(p) are not negligible (qr step).
+         // kase = 4     if e(p-1) is negligible (convergence).
+
+         for (k = p-2; k >= -1; k--) {
+            if (k == -1) {
+               break;
+            }
+            if (fabs(e[k]) <=
+                  tiny + eps*(fabs(s[k]) + fabs(s[k+1]))) {
+               e[k] = 0.0;
+               break;
+            }
+         }
+         if (k == p-2) {
+            kase = 4;
+         } else {
+            int ks;
+            for (ks = p-1; ks >= k; ks--) {
+               if (ks == k) {
+                  break;
+               }
+               double t = (ks != p ? fabs(e[ks]) : 0.) +
+                          (ks != k+1 ? fabs(e[ks-1]) : 0.);
+               if (fabs(s[ks]) <= tiny + eps*t)  {
+                  s[ks] = 0.0;
+                  break;
+               }
+            }
+            if (ks == k) {
+               kase = 3;
+            } else if (ks == p-1) {
+               kase = 1;
+            } else {
+               kase = 2;
+               k = ks;
+            }
+         }
+         k++;
+
+         // Perform the task indicated by kase.
+
+         switch (kase) {
+
+            // Deflate negligible s(p).
+
+            case 1: {
+               double f = e[p-2];
+               e[p-2] = 0.0;
+               for (int j = p-2; j >= k; j--) {
+                  double t = svd_hypot(s[j],f);
+                  double cs = s[j]/t;
+                  double sn = f/t;
+                  s[j] = t;
+                  if (j != k) {
+                     f = -sn*e[j-1];
+                     e[j-1] = cs*e[j-1];
+                  }
+                  if (wantv) {
+                     for (int i = 0; i < n; i++) {
+                        t = cs*V(i, j) + sn*V(i, p-1);
+                        V(i, p-1) = -sn*V(i, j) + cs*V(i, p-1);
+                        V(i, j) = t;
+                     }
+                  }
+               }
+            }
+            break;
+
+            // Split at negligible s(k).
+
+            case 2: {
+               double f = e[k-1];
+               e[k-1] = 0.0;
+               for (int j = k; j < p; j++) {
+                  double t = svd_hypot(s[j],f);
+                  double cs = s[j]/t;
+                  double sn = f/t;
+                  s[j] = t;
+                  f = -sn*e[j];
+                  e[j] = cs*e[j];
+                  if (wantu) {
+                     for (int i = 0; i < m; i++) {
+                        t = cs*U(i, j) + sn*U(i, k-1);
+                        U(i, k-1) = -sn*U(i, j) + cs*U(i, k-1);
+                        U(i, j) = t;
+                     }
+                  }
+               }
+            }
+            break;
+
+            // Perform one qr step.
+
+            case 3: {
+
+               // Calculate the shift.
+
+               double scale = fabs(s[p-1]);
+               double d = fabs(s[p-2]);
+               if (d>scale) scale=d;
+               d = fabs(e[p-2]);
+               if (d>scale) scale=d;
+               d = fabs(s[k]);
+               if (d>scale) scale=d;
+               d = fabs(e[k]);
+               if (d>scale) scale=d;
+               double sp = s[p-1]/scale;
+               double spm1 = s[p-2]/scale;
+               double epm1 = e[p-2]/scale;
+               double sk = s[k]/scale;
+               double ek = e[k]/scale;
+               double b = ((spm1 + sp)*(spm1 - sp) + epm1*epm1)/2.0;
+               double c = (sp*epm1)*(sp*epm1);
+               double shift = 0.0;
+               if ((b != 0.0) | (c != 0.0)) {
+                  shift = sqrt(b*b + c);
+                  if (b < 0.0) {
+                     shift = -shift;
+                  }
+                  shift = c/(b + shift);
+               }
+               double f = (sk + sp)*(sk - sp) + shift;
+               double g = sk*ek;
+
+               // Chase zeros.
+
+               for (int j = k; j < p-1; j++) {
+                  double t = svd_hypot(f,g);
+                  double cs = f/t;
+                  double sn = g/t;
+                  if (j != k) {
+                     e[j-1] = t;
+                  }
+                  f = cs*s[j] + sn*e[j];
+                  e[j] = cs*e[j] - sn*s[j];
+                  g = sn*s[j+1];
+                  s[j+1] = cs*s[j+1];
+                  if (wantv) {
+                     for (int i = 0; i < n; i++) {
+                        t = cs*V(i, j) + sn*V(i, j+1);
+                        V(i, j+1) = -sn*V(i, j) + cs*V(i, j+1);
+                        V(i, j) = t;
+                     }
+                  }
+                  t = svd_hypot(f,g);
+                  cs = f/t;
+                  sn = g/t;
+                  s[j] = t;
+                  f = cs*e[j] + sn*s[j+1];
+                  s[j+1] = -sn*e[j] + cs*s[j+1];
+                  g = sn*e[j+1];
+                  e[j+1] = cs*e[j+1];
+                  if (wantu && (j < m-1)) {
+                     for (int i = 0; i < m; i++) {
+                        t = cs*U(i, j) + sn*U(i, j+1);
+                        U(i, j+1) = -sn*U(i, j) + cs*U(i, j+1);
+                        U(i, j) = t;
+                     }
+                  }
+               }
+               e[p-2] = f;
+            }
+            break;
+
+            // Convergence.
+
+            case 4: {
+
+               // Make the singular values positive.
+
+               if (s[k] <= 0.0) {
+                  s[k] = (s[k] < 0.0 ? -s[k] : 0.0);
+                  if (wantv) {
+                     for (int i = 0; i <= pp; i++) {
+                        V(i, k) = -V(i, k);
+                     }
+                  }
+               }
+
+               // Order the singular values.
+
+               while (k < pp) {
+                  if (s[k] >= s[k+1]) {
+                     break;
+                  }
+                  double t = s[k];
+                  s[k] = s[k+1];
+                  s[k+1] = t;
+                  if (wantv && (k < n-1)) {
+                     for (int i = 0; i < n; i++) {
+                        t = V(i, k+1); V(i, k+1) = V(i, k); V(i, k) = t;
+                     }
+                  }
+                  if (wantu && (k < m-1)) {
+                     for (int i = 0; i < m; i++) {
+                        t = U(i, k+1); U(i, k+1) = U(i, k); U(i, k) = t;
+                     }
+                  }
+                  k++;
+               }
+               p--;
+            }
+            break;
+         }
+      }
+
+    delete [] e;
+    delete [] work;
+
+}
+
+
+/**
+ * Return the left singular vectors
+ * @return     U
+ */
+SVDMatrix &SingularValueDecomposition::getU()
+{
+    return U;
+}
+
+/**
+ * Return the right singular vectors
+ * @return     V
+ */
+
+SVDMatrix &SingularValueDecomposition::getV()
+{
+    return V;
+}
+
+/**
+ *  Return the s[0] value
+ */
+double SingularValueDecomposition::getS(unsigned int index)
+{
+    if (index >= s_size)
+        return 0.0;
+    return s[index];
+}
+
+/**
+ * Two norm
+ * @return     max(S)
+ */
+double SingularValueDecomposition::norm2()
+{
+    return s[0];
+}
+
+/**
+ * Two norm condition number
+ *  @return     max(S)/min(S)
+ */
+
+double SingularValueDecomposition::cond()
+{
+    return s[0]/s[2];
+}
+
+/**
+ *  Effective numerical matrix rank
+ *  @return     Number of nonnegligible singular values.
+ */
+int SingularValueDecomposition::rank()
+{
+    double eps = pow(2.0,-52.0);
+    double tol = 3.0*s[0]*eps;
+    int r = 0;
+    for (int i = 0; i < 3; i++)
+        {
+        if (s[i] > tol)
+            r++;
+        }
+    return r;
+}
+
+//########################################################################
+//# E N D    C L A S S    SingularValueDecomposition
+//########################################################################
+
+
+
+
+
+//#define pxToCm  0.0275
+#define pxToCm  0.03
+
+
+//########################################################################
+//# O U T P U T
+//########################################################################
+
+/**
+ * Get the value of a node/attribute pair
+ */
+static Glib::ustring getAttribute( Inkscape::XML::Node *node, char const *attrName)
+{
+    Glib::ustring val;
+    char const *valstr = node->attribute(attrName);
+    if (valstr)
+        val = valstr;
+    return val;
+}
+
+
+static Glib::ustring formatTransform(Geom::Affine &tf)
+{
+    Glib::ustring str;
+    if (!tf.isIdentity())
+        {
+        StringOutputStream outs;
+        OutputStreamWriter out(outs);
+        out.printf("matrix(%.3f %.3f %.3f %.3f %.3f %.3f)",
+                tf[0], tf[1], tf[2], tf[3], tf[4], tf[5]);
+        str = outs.getString();
+        }
+    return str;
+}
+
+
+/**
+ * Get the general transform from SVG pixels to
+ * ODF cm
+ */
+static Geom::Affine getODFTransform(const SPItem *item)
+{
+    //### Get SVG-to-ODF transform
+    Geom::Affine tf (item->i2doc_affine());
+    tf                   = tf * Geom::Affine(Geom::Scale(pxToCm));
+    return tf;
+}
+
+
+/**
+ * Get the bounding box of an item, as mapped onto
+ * an ODF document, in cm.
+ */
+static Geom::OptRect getODFBoundingBox(const SPItem *item)
+{
+    // TODO: geometric or visual?
+    Geom::OptRect bbox = item->documentVisualBounds();
+    if (bbox) {
+        *bbox *= Geom::Affine(Geom::Scale(pxToCm));
+    }
+    return bbox;
+}
+
+
+/**
+ * Get the transform for an item, including parents, but without
+ * root viewBox transformation.
+ */
+static Geom::Affine getODFItemTransform(const SPItem *item)
+{
+    Geom::Affine itemTransform (item->i2doc_affine() *
+            item->document->getRoot()->c2p.inverse());
+    return itemTransform;
+}
+
+
+/**
+ * Get some fun facts from the transform
+ */
+static void analyzeTransform(Geom::Affine &tf,
+                             double &rotate, double &/*xskew*/, double &/*yskew*/,
+                             double &xscale, double &yscale)
+{
+    SVDMatrix mat(2, 2);
+    mat(0, 0) = tf[0];
+    mat(0, 1) = tf[1];
+    mat(1, 0) = tf[2];
+    mat(1, 1) = tf[3];
+
+    SingularValueDecomposition svd(mat);
+
+    SVDMatrix U = svd.getU();
+    SVDMatrix V = svd.getV();
+    SVDMatrix Vt = V.transpose();
+    SVDMatrix UVt = U.multiply(Vt);
+    double s0 = svd.getS(0);
+    double s1 = svd.getS(1);
+    xscale = s0;
+    yscale = s1;
+    rotate = UVt(0,0);
+}
+
+static void gatherText(Inkscape::XML::Node *node, Glib::ustring &buf)
+{
+    if (node->type() == Inkscape::XML::NodeType::TEXT_NODE)
+        {
+        char *s = (char *)node->content();
+        if (s)
+            buf.append(s);
+        }
+
+    for (Inkscape::XML::Node *child = node->firstChild() ;
+                child != nullptr; child = child->next())
+        {
+        gatherText(child, buf);
+        }
+
+}
+
+
+/**
+ * FIRST PASS.
+ * Method descends into the repr tree, converting image, style, and gradient info
+ * into forms compatible in ODF.
+ */
+void OdfOutput::preprocess(ZipFile &zf, SPDocument *doc, Inkscape::XML::Node *node)
+{
+    Glib::ustring nodeName = node->name();
+    Glib::ustring id       = getAttribute(node, "id");
+
+    //### First, check for metadata
+    if (nodeName == "metadata" || nodeName == "svg:metadata")
+        {
+        Inkscape::XML::Node *mchild = node->firstChild() ;
+        if (!mchild || strcmp(mchild->name(), "rdf:RDF"))
+            return;
+        Inkscape::XML::Node *rchild = mchild->firstChild() ;
+        if (!rchild || strcmp(rchild->name(), "cc:Work"))
+            return;
+        for (Inkscape::XML::Node *cchild = rchild->firstChild() ;
+            cchild ; cchild = cchild->next())
+            {
+            Glib::ustring ccName = cchild->name();
+            Glib::ustring ccVal;
+            gatherText(cchild, ccVal);
+            //g_message("ccName: %s  ccVal:%s", ccName.c_str(), ccVal.c_str());
+            metadata[ccName] = ccVal;
+            }
+        return;
+        }
+
+    //Now consider items.
+    SPObject *reprobj = doc->getObjectByRepr(node);
+    if (!reprobj)
+    {
+        return;
+    }
+    if (!SP_IS_ITEM(reprobj))
+    {
+        return;
+    }
+
+    if (nodeName == "image" || nodeName == "svg:image") {
+        Glib::ustring href = getAttribute(node, "xlink:href");
+        if (href.size() > 0 && imageTable.count(href) == 0) {
+            try {
+                auto uri = Inkscape::URI(href.c_str(), docBaseUri.c_str());
+                auto mimetype = uri.getMimeType();
+
+                if (mimetype.substr(0, 6) != "image/") {
+                    return;
+                }
+
+                auto ext = mimetype.substr(6);
+                auto newName = Glib::ustring("Pictures/image") + std::to_string(imageTable.size()) + "." + ext;
+
+                imageTable[href] = newName;
+
+                auto ze = zf.newEntry(newName.raw(), "");
+                ze->setUncompressedData(uri.getContents());
+                ze->finish();
+            } catch (...) {
+                g_warning("Could not handle URI '%.100s'", href.c_str());
+            }
+        }
+    }
+
+    for (Inkscape::XML::Node *child = node->firstChild() ;
+            child ; child = child->next())
+        preprocess(zf, doc, child);
+}
+
+
+/**
+ * Writes the manifest.  Currently it only changes according to the
+ * file names of images packed into the zip file.
+ */
+bool OdfOutput::writeManifest(ZipFile &zf)
+{
+    BufferOutputStream bouts;
+    OutputStreamWriter outs(bouts);
+
+    time_t tim;
+    time(&tim);
+
+    outs.writeString("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n");
+    outs.writeString("<!DOCTYPE manifest:manifest PUBLIC \"-//OpenOffice.org//DTD Manifest 1.0//EN\" \"Manifest.dtd\">\n");
+    outs.writeString("\n");
+    outs.writeString("\n");
+    outs.writeString("<!--\n");
+    outs.writeString("*************************************************************************\n");
+    outs.writeString("  file:  manifest.xml\n");
+    outs.printf     ("  Generated by Inkscape: %s", ctime(&tim)); //ctime has its own <cr>
+    outs.writeString("  http://www.inkscape.org\n");
+    outs.writeString("*************************************************************************\n");
+    outs.writeString("-->\n");
+    outs.writeString("\n");
+    outs.writeString("\n");
+    outs.writeString("<manifest:manifest xmlns:manifest=\"urn:oasis:names:tc:opendocument:xmlns:manifest:1.0\">\n");
+    outs.writeString("    <manifest:file-entry manifest:media-type=\"application/vnd.oasis.opendocument.graphics\" manifest:full-path=\"/\"/>\n");
+    outs.writeString("    <manifest:file-entry manifest:media-type=\"text/xml\" manifest:full-path=\"content.xml\"/>\n");
+    outs.writeString("    <manifest:file-entry manifest:media-type=\"text/xml\" manifest:full-path=\"styles.xml\"/>\n");
+    outs.writeString("    <manifest:file-entry manifest:media-type=\"text/xml\" manifest:full-path=\"meta.xml\"/>\n");
+    outs.writeString("    <!--List our images here-->\n");
+    std::map<Glib::ustring, Glib::ustring>::iterator iter;
+    for (iter = imageTable.begin() ; iter!=imageTable.end() ; ++iter)
+        {
+        Glib::ustring newName = iter->second;
+
+        // note: mime subtype was added as file extension in OdfOutput::preprocess
+        Glib::ustring mimesubtype = Inkscape::IO::get_file_extension(newName);
+
+        outs.printf("    <manifest:file-entry manifest:media-type=\"");
+        outs.printf("image/");
+        outs.printf("%s", mimesubtype.c_str());
+        outs.printf("\" manifest:full-path=\"");
+        outs.writeString(newName.c_str());
+        outs.printf("\"/>\n");
+        }
+    outs.printf("</manifest:manifest>\n");
+
+    outs.close();
+
+    //Make our entry
+    ZipEntry *ze = zf.newEntry("META-INF/manifest.xml", "ODF file manifest");
+    ze->setUncompressedData(bouts.getBuffer());
+    ze->finish();
+
+    return true;
+}
+
+
+/**
+ * This writes the document meta information to meta.xml
+ */
+bool OdfOutput::writeMeta(ZipFile &zf)
+{
+    BufferOutputStream bouts;
+    OutputStreamWriter outs(bouts);
+
+    time_t tim;
+    time(&tim);
+
+    std::map<Glib::ustring, Glib::ustring>::iterator iter;
+    Glib::ustring InkscapeVersion = Glib::ustring("Inkscape.org - ") + Inkscape::version_string;
+    Glib::ustring creator = InkscapeVersion;
+    iter = metadata.find("dc:creator");
+    if (iter != metadata.end())
+    {
+        creator = iter->second;
+    }
+    
+    Glib::ustring date;
+    Glib::ustring moddate;
+    char buf [80];
+    time_t rawtime;
+    struct tm * timeinfo;
+    time (&rawtime);
+    timeinfo = localtime (&rawtime);
+    strftime (buf,80,"%Y-%m-%d %H:%M:%S",timeinfo);
+    moddate = Glib::ustring(buf);
+    
+    iter = metadata.find("dc:date");
+    if (iter != metadata.end())
+    {
+        date = iter->second;
+    }
+    else
+    {
+        date = moddate;
+    }
+
+    outs.writeString("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n");
+    outs.writeString("\n");
+    outs.writeString("<!--\n");
+    outs.writeString("*************************************************************************\n");
+    outs.writeString("  file:  meta.xml\n");
+    outs.printf     ("  Generated by Inkscape: %s", ctime(&tim)); //ctime has its own <cr>
+    outs.writeString("  http://www.inkscape.org\n");
+    outs.writeString("*************************************************************************\n");
+    outs.writeString("-->\n");
+    outs.writeString("\n");
+    outs.writeString("<office:document-meta\n");
+    outs.writeString("xmlns:office=\"urn:oasis:names:tc:opendocument:xmlns:office:1.0\"\n");
+    outs.writeString("xmlns:xlink=\"http://www.w3.org/1999/xlink\"\n");
+    outs.writeString("xmlns:dc=\"http://purl.org/dc/elements/1.1/\"\n");
+    outs.writeString("xmlns:meta=\"urn:oasis:names:tc:opendocument:xmlns:meta:1.0\"\n");
+    outs.writeString("xmlns:presentation=\"urn:oasis:names:tc:opendocument:xmlns:presentation:1.0\"\n");
+    outs.writeString("xmlns:ooo=\"http://openoffice.org/2004/office\"\n");
+    outs.writeString("xmlns:smil=\"urn:oasis:names:tc:opendocument:xmlns:smil-compatible:1.0\"\n");
+    outs.writeString("xmlns:anim=\"urn:oasis:names:tc:opendocument:xmlns:animation:1.0\"\n");
+    outs.writeString("office:version=\"1.0\">\n");
+    outs.writeString("<office:meta>\n");
+    Glib::ustring tmp = Glib::ustring::compose("    <meta:generator>%1</meta:generator>\n", InkscapeVersion);
+    tmp += Glib::ustring::compose("    <meta:initial-creator>%1</meta:initial-creator>\n", creator);
+    tmp += Glib::ustring::compose("    <meta:creation-date>%1</meta:creation-date>\n", date);
+    tmp += Glib::ustring::compose("    <dc:date>%1</dc:date>\n", moddate);
+    outs.writeUString(tmp);
+    for (iter = metadata.begin() ; iter != metadata.end() ; ++iter)
+    {
+        Glib::ustring name  = iter->first;
+        Glib::ustring value = iter->second;
+        if (!name.empty() && !value.empty())
+        {
+            tmp = Glib::ustring::compose("    <%1>%2</%3>\n", name, value, name);
+            outs.writeUString(tmp);
+        }
+    }
+    // outs.writeString("    <meta:editing-cycles>2</meta:editing-cycles>\n");
+    // outs.writeString("    <meta:editing-duration>PT56S</meta:editing-duration>\n");
+    // outs.writeString("    <meta:user-defined meta:name=\"Info 1\"/>\n");
+    // outs.writeString("    <meta:user-defined meta:name=\"Info 2\"/>\n");
+    // outs.writeString("    <meta:user-defined meta:name=\"Info 3\"/>\n");
+    // outs.writeString("    <meta:user-defined meta:name=\"Info 4\"/>\n");
+    // outs.writeString("    <meta:document-statistic meta:object-count=\"2\"/>\n");
+    outs.writeString("</office:meta>\n");
+    outs.writeString("</office:document-meta>\n");
+    outs.close();
+
+    //Make our entry
+    ZipEntry *ze = zf.newEntry("meta.xml", "ODF info file");
+    ze->setUncompressedData(bouts.getBuffer());
+    ze->finish();
+
+    return true;
+}
+
+
+/**
+ * Writes an SVG path as an ODF <draw:path> and returns the number of points written
+ */
+static int
+writePath(Writer &outs, Geom::PathVector const &pathv,
+          Geom::Affine const &tf, double xoff, double yoff)
+{
+    using Geom::X;
+    using Geom::Y;
+
+    int nrPoints  = 0;
+
+    // convert the path to only lineto's and cubic curveto's:
+    Geom::PathVector pv = pathv_to_linear_and_cubic_beziers(pathv * tf * Geom::Translate(xoff, yoff) * Geom::Scale(1000.));
+
+        for (const auto & pit : pv) {
+
+            double destx = pit.initialPoint()[X];
+            double desty = pit.initialPoint()[Y];
+            if (fabs(destx)<1.0) destx = 0.0;   // Why is this needed? Shouldn't we just round all numbers then?
+            if (fabs(desty)<1.0) desty = 0.0;
+            outs.printf("M %.3f %.3f ", destx, desty);
+            nrPoints++;
+
+            for (Geom::Path::const_iterator cit = pit.begin(); cit != pit.end_closed(); ++cit) {
+
+                if( is_straight_curve(*cit) )
+                {
+                    double destx = cit->finalPoint()[X];
+                    double desty = cit->finalPoint()[Y];
+                    if (fabs(destx)<1.0) destx = 0.0;   // Why is this needed? Shouldn't we just round all numbers then?
+                    if (fabs(desty)<1.0) desty = 0.0;
+                    outs.printf("L %.3f %.3f ",  destx, desty);
+                }
+                else if(Geom::CubicBezier const *cubic = dynamic_cast<Geom::CubicBezier const*>(&*cit)) {
+                    std::vector<Geom::Point> points = cubic->controlPoints();
+                    for (unsigned i = 1; i <= 3; i++) {
+                        if (fabs(points[i][X])<1.0) points[i][X] = 0.0;   // Why is this needed? Shouldn't we just round all numbers then?
+                        if (fabs(points[i][Y])<1.0) points[i][Y] = 0.0;
+                    }
+                    outs.printf("C %.3f %.3f %.3f %.3f %.3f %.3f ", points[1][X],points[1][Y], points[2][X],points[2][Y], points[3][X],points[3][Y]);
+                }
+                else {
+                    g_error ("logical error, because pathv_to_linear_and_cubic_beziers was used");
+                }
+
+                nrPoints++;
+            }
+
+            if (pit.closed()) {
+                outs.printf("Z");
+            }
+        }
+
+    return nrPoints;
+}
+
+bool OdfOutput::processStyle(SPItem *item, const Glib::ustring &id, const Glib::ustring &gradientNameFill, const Glib::ustring &gradientNameStroke, Glib::ustring& output)
+{
+    output.clear();
+    if (!item)
+    {
+        return false;
+    }
+    
+    SPStyle *style = item->style;
+    if (!style)
+    {
+        return false;
+    }
+    
+    StyleInfo si;
+
+    // FILL
+    if (style->fill.isColor())
+    {
+        guint32 fillCol = style->fill.value.color.toRGBA32( 0 );
+        char buf[16];
+        int r = (fillCol >> 24) & 0xff;
+        int g = (fillCol >> 16) & 0xff;
+        int b = (fillCol >>  8) & 0xff;
+        snprintf(buf, 15, "#%02x%02x%02x", r, g, b);
+        si.fillColor = buf;
+        si.fill      = "solid";
+        double opacityPercent = 100.0 *
+             (SP_SCALE24_TO_FLOAT(style->fill_opacity.value));
+        snprintf(buf, 15, "%.3f%%", opacityPercent);
+        si.fillOpacity = buf;
+    }
+    else if (style->fill.isPaintserver())
+    {
+        SPGradient *gradient = SP_GRADIENT(SP_STYLE_FILL_SERVER(style));
+        if (gradient)
+        {
+            si.fill = "gradient";
+        }
+    }
+
+    // STROKE
+    if (style->stroke.isColor())
+    {
+        guint32 strokeCol = style->stroke.value.color.toRGBA32( 0 );
+        char buf[16];
+        int r = (strokeCol >> 24) & 0xff;
+        int g = (strokeCol >> 16) & 0xff;
+        int b = (strokeCol >>  8) & 0xff;
+        snprintf(buf, 15, "#%02x%02x%02x", r, g, b);
+        si.strokeColor = buf;
+        snprintf(buf, 15, "%.3fpt", style->stroke_width.value);
+        si.strokeWidth = buf;
+        si.stroke      = "solid";
+        double opacityPercent = 100.0 *
+             (SP_SCALE24_TO_FLOAT(style->stroke_opacity.value));
+        snprintf(buf, 15, "%.3f%%", opacityPercent);
+        si.strokeOpacity = buf;
+    }
+    else if (style->stroke.isPaintserver())
+    {
+        SPGradient *gradient = SP_GRADIENT(SP_STYLE_STROKE_SERVER(style));
+        if (gradient)
+        {
+            si.stroke = "gradient";
+        }
+    }
+
+    //Look for existing identical style;
+    bool styleMatch = false;
+    std::vector<StyleInfo>::iterator iter;
+    for (iter=styleTable.begin() ; iter!=styleTable.end() ; ++iter)
+    {
+        if (si.equals(*iter))
+        {
+            //map to existing styleTable entry
+            Glib::ustring styleName = iter->name;
+            styleLookupTable[id] = styleName;
+            styleMatch = true;
+            break;
+        }
+    }
+
+    // Don't need a new style
+    if (styleMatch)
+    {
+        return false;
+    }
+
+    Glib::ustring styleName = Glib::ustring::compose("style%1", styleTable.size());
+    si.name = styleName;
+    styleTable.push_back(si);
+    styleLookupTable[id] = styleName;
+
+    output = Glib::ustring::compose ("<style:style style:name=\"%1\" style:family=\"graphic\" style:parent-style-name=\"standard\">\n", si.name);
+    output += "<style:graphic-properties";
+    if (si.fill == "gradient")
+    {
+        output += Glib::ustring::compose (" draw:fill=\"gradient\" draw:fill-gradient-name=\"%1\"", gradientNameFill);
+    }
+    else
+    {
+        output += Glib::ustring(" draw:fill=\"") + si.fill + "\"";
+        if(si.fill != "none")
+        {
+            output += Glib::ustring::compose(" draw:fill-color=\"%1\"", si.fillColor);
+        }
+    }
+    if (si.stroke == "gradient")
+    {
+        //does not seem to be supported by Open Office.org
+        output += Glib::ustring::compose (" draw:stroke=\"gradient\" draw:stroke-gradient-name=\"%1\"", gradientNameStroke);
+    }
+    else
+    {
+        output += Glib::ustring(" draw:stroke=\"") + si.stroke + "\"";
+        if (si.stroke != "none")
+        {
+            output += Glib::ustring::compose (" svg:stroke-width=\"%1\" svg:stroke-color=\"%2\" ", si.strokeWidth, si.strokeColor);
+        }
+    }
+    output += "/>\n</style:style>\n";
+
+    return true;
+}
+
+bool OdfOutput::processGradient(SPItem *item,
+                                const Glib::ustring &id, Geom::Affine &/*tf*/,
+                                Glib::ustring& gradientName, Glib::ustring& output, bool checkFillGradient)
+{
+    output.clear();
+    if (!item)
+    {
+        return false;
+    }
+
+    SPStyle *style = item->style;
+    if (!style)
+    {
+        return false;
+    }
+
+    if ((checkFillGradient? (!style->fill.isPaintserver()) : (!style->stroke.isPaintserver())))
+    {
+        return false;
+    }
+
+    //## Gradient
+    SPGradient *gradient = SP_GRADIENT((checkFillGradient?(SP_STYLE_FILL_SERVER(style)) :(SP_STYLE_STROKE_SERVER(style))));
+
+    if (gradient == nullptr)
+    {
+        return false;
+    }
+    GradientInfo gi;
+    SPGradient *grvec = gradient->getVector(FALSE);
+    for (SPStop *stop = grvec->getFirstStop();
+         stop ; stop = stop->getNextStop())
+    {
+        unsigned long rgba = stop->get_rgba32();
+        unsigned long rgb  = (rgba >> 8) & 0xffffff;
+        double opacity     = (static_cast<double>(rgba & 0xff)) / 256.0;
+        GradientStop gs(rgb, opacity);
+        gi.stops.push_back(gs);
+    }
+
+    Glib::ustring gradientName2;
+    if (SP_IS_LINEARGRADIENT(gradient))
+    {
+        gi.style = "linear";
+        SPLinearGradient *linGrad = SP_LINEARGRADIENT(gradient);
+        gi.x1 = linGrad->x1.value;
+        gi.y1 = linGrad->y1.value;
+        gi.x2 = linGrad->x2.value;
+        gi.y2 = linGrad->y2.value;
+        gradientName2 = Glib::ustring::compose("ImportedLinearGradient%1", gradientTable.size());
+    }
+    else if (SP_IS_RADIALGRADIENT(gradient))
+    {
+        gi.style = "radial";
+        SPRadialGradient *radGrad = SP_RADIALGRADIENT(gradient);
+        Geom::OptRect bbox = item->documentVisualBounds();
+        gi.cx = (radGrad->cx.value-bbox->left())/bbox->width();
+        gi.cy = (radGrad->cy.value-bbox->top())/bbox->height();
+        gradientName2 = Glib::ustring::compose("ImportedRadialGradient%1", gradientTable.size());
+    }
+    else
+    {
+        g_warning("not a supported gradient type");
+        return false;
+    }
+
+    //Look for existing identical style;
+    bool gradientMatch = false;
+    std::vector<GradientInfo>::iterator iter;
+    for (iter=gradientTable.begin() ; iter!=gradientTable.end() ; ++iter)
+    {
+        if (gi.equals(*iter))
+        {
+            //map to existing gradientTable entry
+            gradientName = iter->name;
+            gradientLookupTable[id] = gradientName;
+            gradientMatch = true;
+            break;
+        }
+    }
+
+    if (gradientMatch)
+    {
+        return true;
+    }
+
+    // No match, let us write a new entry
+    gradientName = gradientName2;
+    gi.name = gradientName;
+    gradientTable.push_back(gi);
+    gradientLookupTable[id] = gradientName;
+
+    // int gradientCount = gradientTable.size();
+    char buf[128];
+    if (gi.style == "linear")
+    {
+        /*
+        ===================================================================
+        LINEAR gradient.  We need something that looks like this:
+        <draw:gradient draw:name="Gradient_20_7"
+            draw:display-name="Gradient 7"
+            draw:style="linear"
+            draw:start-color="#008080" draw:end-color="#993366"
+            draw:start-intensity="100%" draw:end-intensity="100%"
+            draw:angle="150" draw:border="0%"/>
+        ===================================================================
+        */
+        if (gi.stops.size() < 2)
+        {
+            g_warning("Need at least 2 stops for a linear gradient");
+            return false;
+        }
+        output += Glib::ustring::compose("<draw:gradient draw:name=\"%1\"", gi.name);
+        output += Glib::ustring::compose(" draw:display-name=\"%1\"", gi.name);
+        output += " draw:style=\"linear\"";
+        snprintf(buf, 127, " draw:start-color=\"#%06lx\" draw:end-color=\"#%06lx\"", gi.stops[0].rgb, gi.stops[1].rgb);
+        output += buf;
+        //TODO: apply maths, to define begin of gradient, taking gradient begin and end, as well as object boundary into account
+        double angle = (gi.y2-gi.y1);
+        angle = (angle != 0.) ? (atan((gi.x2-gi.x1)/(gi.y2-gi.y1))* 180. / M_PI) : 90;
+        angle = (angle < 0)?(180+angle):angle;
+        angle = angle * 10; //why do we need this: precision?????????????
+        output += Glib::ustring::compose(" draw:start-intensity=\"%1\" draw:end-intensity=\"%2\" draw:angle=\"%3\"/>\n",
+            gi.stops[0].opacity * 100.0, gi.stops[1].opacity * 100.0, angle);// draw:border=\"0%%\"
+    }
+    else if (gi.style == "radial")
+    {
+        /*
+        ===================================================================
+        RADIAL gradient.  We need something that looks like this:
+        <!-- radial gradient, light gray to white, centered, 0% border -->
+        <draw:gradient draw:name="radial_20_borderless"
+            draw:display-name="radial borderless"
+            draw:style="radial"
+            draw:cx="50%" draw:cy="50%"
+            draw:start-color="#999999" draw:end-color="#ffffff"
+            draw:border="0%"/>
+        ===================================================================
+        */
+        if (gi.stops.size() < 2)
+        {
+            g_warning("Need at least 2 stops for a radial gradient");
+            return false;
+        }
+        output += Glib::ustring::compose("<draw:gradient draw:name=\"%1\" draw:display-name=\"%1\" ", gi.name);
+        snprintf(buf, 127, "draw:cx=\"%05.3f\" draw:cy=\"%05.3f\" ", gi.cx*100, gi.cy*100);
+        output += Glib::ustring("draw:style=\"radial\" ") + buf;
+        snprintf(buf, 127, "draw:start-color=\"#%06lx\" draw:end-color=\"#%06lx\" ", gi.stops[0].rgb, gi.stops[1].rgb);
+        output += buf;
+        snprintf(buf, 127, "draw:start-intensity=\"%f%%\" draw:end-intensity=\"%f%%\" ", gi.stops[0].opacity*100.0, gi.stops[1].opacity*100.0);
+        output += buf;
+        output += "/>\n";//draw:border=\"0%\"
+    }
+    else
+    {
+        g_warning("unsupported gradient style '%s'", gi.style.c_str());
+        return false;
+    }
+    return true;
+}
+
+
+/**
+ * SECOND PASS.
+ * This is the main SPObject tree output to ODF.
+ */
+bool OdfOutput::writeTree(Writer &couts, Writer &souts,
+                          SPDocument *doc,
+                          Inkscape::XML::Node *node)
+{
+    //# Get the SPItem, if applicable
+    SPObject *reprobj = doc->getObjectByRepr(node);
+    if (!reprobj)
+    {
+        return true;
+    }
+    if (!SP_IS_ITEM(reprobj))
+    {
+        return true;
+    }
+    SPItem *item = SP_ITEM(reprobj);
+
+    Glib::ustring nodeName = node->name();
+    Glib::ustring id       = getAttribute(node, "id");
+    Geom::Affine tf        = getODFTransform(item);//Get SVG-to-ODF transform
+    Geom::OptRect bbox = getODFBoundingBox(item);//Get ODF bounding box params for item
+    if (!bbox) {
+        return true;
+    }
+
+    double bbox_x        = bbox->min()[Geom::X];
+    double bbox_y        = bbox->min()[Geom::Y];
+    double bbox_width    = (*bbox)[Geom::X].extent();
+    double bbox_height   = (*bbox)[Geom::Y].extent();
+
+    double rotate;
+    double xskew;
+    double yskew;
+    double xscale;
+    double yscale;
+    analyzeTransform(tf, rotate, xskew, yskew, xscale, yscale);
+
+    //# Do our stuff
+
+    if (nodeName == "svg" || nodeName == "svg:svg")
+    {
+        //# Iterate through the children
+        for (Inkscape::XML::Node *child = node->firstChild() ;
+               child ; child = child->next())
+        {
+            if (!writeTree(couts, souts, doc, child))
+            {
+                return false;
+            }
+        }
+        return true;
+    }
+    else if (nodeName == "g" || nodeName == "svg:g")
+    {
+        if (!id.empty())
+        {
+            couts.printf("<draw:g id=\"%s\">\n", id.c_str());
+        }
+        else
+        {
+            couts.printf("<draw:g>\n");
+        }
+        //# Iterate through the children
+        for (Inkscape::XML::Node *child = node->firstChild() ;
+               child ; child = child->next())
+        {
+            if (!writeTree(couts, souts, doc, child))
+            {
+                return false;
+            }
+        }
+        if (!id.empty())
+        {
+            couts.printf("</draw:g> <!-- id=\"%s\" -->\n", id.c_str());
+        }
+        else
+        {
+            couts.printf("</draw:g>\n");
+        }
+        return true;
+    }
+
+    //# GRADIENT
+    Glib::ustring gradientNameFill;
+    Glib::ustring gradientNameStroke;
+    Glib::ustring outputFill;
+    Glib::ustring outputStroke;
+    Glib::ustring outputStyle;
+    
+    processGradient(item, id, tf, gradientNameFill, outputFill, true);
+    processGradient(item, id, tf, gradientNameStroke, outputStroke, false);
+    souts.writeUString(outputFill);
+    souts.writeUString(outputStroke);
+    
+    //# STYLE
+    processStyle(item, id, gradientNameFill, gradientNameStroke, outputStyle);
+    souts.writeUString(outputStyle);
+
+    //# ITEM DATA
+    if (nodeName == "image" || nodeName == "svg:image")
+    {
+        if (!SP_IS_IMAGE(item))
+        {
+            g_warning("<image> is not an SPImage.");
+            return false;
+        }
+
+        SPImage *img   = SP_IMAGE(item);
+        double ix      = img->x.value;
+        double iy      = img->y.value;
+        double iwidth  = img->width.value;
+        double iheight = img->height.value;
+
+        Geom::Point ibbox_min = Geom::Point(ix, iy) * tf;
+        ix      = ibbox_min.x();
+        iy      = ibbox_min.y();
+        iwidth  = xscale * iwidth;
+        iheight = yscale * iheight;
+
+        Geom::Affine itemTransform = getODFItemTransform(item);
+
+        Glib::ustring itemTransformString = formatTransform(itemTransform);
+
+        Glib::ustring href = getAttribute(node, "xlink:href");
+        std::map<Glib::ustring, Glib::ustring>::iterator iter = imageTable.find(href);
+        if (iter == imageTable.end())
+        {
+            g_warning("image '%s' not in table", href.c_str());
+            return false;
+        }
+        Glib::ustring newName = iter->second;
+
+        couts.printf("<draw:frame ");
+        if (!id.empty())
+        {
+            couts.printf("id=\"%s\" ", id.c_str());
+        }
+        couts.printf("draw:style-name=\"gr1\" draw:text-style-name=\"P1\" draw:layer=\"layout\" ");
+        //no x or y.  make them the translate transform, last one
+        couts.printf("svg:width=\"%.3fcm\" svg:height=\"%.3fcm\" ",
+                                  iwidth, iheight);
+        if (!itemTransformString.empty())
+        {
+            couts.printf("draw:transform=\"%s translate(%.3fcm, %.3fcm)\" ",
+                           itemTransformString.c_str(), ix, iy);
+        }
+        else
+        {
+            couts.printf("draw:transform=\"translate(%.3fcm, %.3fcm)\" ", ix, iy);
+        }
+
+        couts.writeString(">\n");
+        couts.printf("    <draw:image xlink:href=\"%s\" xlink:type=\"simple\"\n",
+                              newName.c_str());
+        couts.writeString("        xlink:show=\"embed\" xlink:actuate=\"onLoad\">\n");
+        couts.writeString("        <text:p/>\n");
+        couts.writeString("    </draw:image>\n");
+        couts.writeString("</draw:frame>\n");
+        return true;
+    }
+
+    std::unique_ptr<SPCurve> curve;
+
+    if (auto shape = dynamic_cast<SPShape const *>(item)) {
+        curve = SPCurve::copy(shape->curve());
+    } else if (SP_IS_TEXT(item) || SP_IS_FLOWTEXT(item)) {
+        curve = te_get_layout(item)->convertToCurves();
+    }
+
+    if (curve)
+    {
+        //### Default <path> output
+        couts.writeString("<draw:path ");
+        if (!id.empty())
+        {
+            couts.printf("id=\"%s\" ", id.c_str());
+        }
+
+        std::map<Glib::ustring, Glib::ustring>::iterator siter;
+        siter = styleLookupTable.find(id);
+        if (siter != styleLookupTable.end())
+        {
+            Glib::ustring styleName = siter->second;
+            couts.printf("draw:style-name=\"%s\" ", styleName.c_str());
+        }
+
+        couts.printf("draw:layer=\"layout\" svg:x=\"%.3fcm\" svg:y=\"%.3fcm\" ",
+                       bbox_x, bbox_y);
+        couts.printf("svg:width=\"%.3fcm\" svg:height=\"%.3fcm\" ",
+                       bbox_width, bbox_height);
+        couts.printf("svg:viewBox=\"0.0 0.0 %.3f %.3f\"",
+                       bbox_width * 1000.0, bbox_height * 1000.0);
+
+        couts.printf(" svg:d=\"");
+        int nrPoints = writePath(couts, curve->get_pathvector(),
+                             tf, bbox_x, bbox_y);
+        couts.writeString("\"");
+
+        couts.writeString(">\n");
+        couts.printf("    <!-- %d nodes -->\n", nrPoints);
+        couts.writeString("</draw:path>\n\n");
+    }
+
+    return true;
+}
+
+
+/**
+ * Write the header for the content.xml file
+ */
+bool OdfOutput::writeStyleHeader(Writer &outs)
+{
+    time_t tim;
+    time(&tim);
+
+    outs.writeString("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n");
+    outs.writeString("\n");
+    outs.writeString("<!--\n");
+    outs.writeString("*************************************************************************\n");
+    outs.writeString("  file:  styles.xml\n");
+    outs.printf     ("  Generated by Inkscape: %s", ctime(&tim)); //ctime has its own <cr>
+    outs.writeString("  http://www.inkscape.org\n");
+    outs.writeString("*************************************************************************\n");
+    outs.writeString("-->\n");
+    outs.writeString("\n");
+    outs.writeString("<office:document-styles\n");
+    outs.writeString("    xmlns:office=\"urn:oasis:names:tc:opendocument:xmlns:office:1.0\"\n");
+    outs.writeString("    xmlns:style=\"urn:oasis:names:tc:opendocument:xmlns:style:1.0\"\n");
+    outs.writeString("    xmlns:text=\"urn:oasis:names:tc:opendocument:xmlns:text:1.0\"\n");
+    outs.writeString("    xmlns:table=\"urn:oasis:names:tc:opendocument:xmlns:table:1.0\"\n");
+    outs.writeString("    xmlns:draw=\"urn:oasis:names:tc:opendocument:xmlns:drawing:1.0\"\n");
+    outs.writeString("    xmlns:fo=\"urn:oasis:names:tc:opendocument:xmlns:xsl-fo-compatible:1.0\"\n");
+    outs.writeString("    xmlns:xlink=\"http://www.w3.org/1999/xlink\"\n");
+    outs.writeString("    xmlns:dc=\"http://purl.org/dc/elements/1.1/\"\n");
+    outs.writeString("    xmlns:meta=\"urn:oasis:names:tc:opendocument:xmlns:meta:1.0\"\n");
+    outs.writeString("    xmlns:number=\"urn:oasis:names:tc:opendocument:xmlns:datastyle:1.0\"\n");
+    outs.writeString("    xmlns:presentation=\"urn:oasis:names:tc:opendocument:xmlns:presentation:1.0\"\n");
+    outs.writeString("    xmlns:svg=\"urn:oasis:names:tc:opendocument:xmlns:svg-compatible:1.0\"\n");
+    outs.writeString("    xmlns:chart=\"urn:oasis:names:tc:opendocument:xmlns:chart:1.0\"\n");
+    outs.writeString("    xmlns:dr3d=\"urn:oasis:names:tc:opendocument:xmlns:dr3d:1.0\"\n");
+    outs.writeString("    xmlns:math=\"http://www.w3.org/1998/Math/MathML\"\n");
+    outs.writeString("    xmlns:form=\"urn:oasis:names:tc:opendocument:xmlns:form:1.0\"\n");
+    outs.writeString("    xmlns:script=\"urn:oasis:names:tc:opendocument:xmlns:script:1.0\"\n");
+    outs.writeString("    xmlns:ooo=\"http://openoffice.org/2004/office\"\n");
+    outs.writeString("    xmlns:ooow=\"http://openoffice.org/2004/writer\"\n");
+    outs.writeString("    xmlns:oooc=\"http://openoffice.org/2004/calc\"\n");
+    outs.writeString("    xmlns:dom=\"http://www.w3.org/2001/xml-events\"\n");
+    outs.writeString("    xmlns:xforms=\"http://www.w3.org/2002/xforms\"\n");
+    outs.writeString("    xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\"\n");
+    outs.writeString("    xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"\n");
+    outs.writeString("    xmlns:smil=\"urn:oasis:names:tc:opendocument:xmlns:smil-compatible:1.0\"\n");
+    outs.writeString("    xmlns:anim=\"urn:oasis:names:tc:opendocument:xmlns:animation:1.0\"\n");
+    outs.writeString("    office:version=\"1.0\">\n");
+    outs.writeString("\n");
+    outs.writeString("<!--\n");
+    outs.writeString("*************************************************************************\n");
+    outs.writeString("  S T Y L E S\n");
+    outs.writeString("  Style entries have been pulled from the svg style and\n");
+    outs.writeString("  representation attributes in the SVG tree.  The tree elements\n");
+    outs.writeString("  then refer to them by name, in the ODF manner\n");
+    outs.writeString("*************************************************************************\n");
+    outs.writeString("-->\n");
+    outs.writeString("\n");
+    outs.writeString("<office:styles>\n");
+    outs.writeString("\n");
+
+    return true;
+}
+
+
+/**
+ * Write the footer for the style.xml file
+ */
+bool OdfOutput::writeStyleFooter(Writer &outs)
+{
+    outs.writeString("\n");
+    outs.writeString("</office:styles>\n");
+    outs.writeString("\n");
+    outs.writeString("<office:automatic-styles>\n");
+    outs.writeString("<!-- ####### 'Standard' styles ####### -->\n");
+    outs.writeString("<style:style style:name=\"dp1\" style:family=\"drawing-page\"/>\n");
+    outs.writeString("<style:style style:name=\"standard\" style:family=\"graphic\">\n");
+    
+///TODO: add default document style here
+    
+    outs.writeString("</style:style>\n");
+    outs.writeString("<style:style style:name=\"gr1\" style:family=\"graphic\" style:parent-style-name=\"standard\">\n");
+    outs.writeString("  <style:graphic-properties draw:stroke=\"none\" draw:fill=\"none\"\n");
+    outs.writeString("       draw:textarea-horizontal-align=\"center\"\n");
+    outs.writeString("       draw:textarea-vertical-align=\"middle\" draw:color-mode=\"standard\"\n");
+    outs.writeString("       draw:luminance=\"0%\" draw:contrast=\"0%\" draw:gamma=\"100%\" draw:red=\"0%\"\n");
+    outs.writeString("       draw:green=\"0%\" draw:blue=\"0%\" fo:clip=\"rect(0cm 0cm 0cm 0cm)\"\n");
+    outs.writeString("       draw:image-opacity=\"100%\" style:mirror=\"none\"/>\n");
+    outs.writeString("</style:style>\n");
+    outs.writeString("<style:style style:name=\"P1\" style:family=\"paragraph\">\n");
+    outs.writeString("  <style:paragraph-properties fo:text-align=\"center\"/>\n");
+    outs.writeString("</style:style>\n");
+    outs.writeString("</office:automatic-styles>\n");
+    outs.writeString("\n");
+    outs.writeString("<office:master-styles>\n");
+    outs.writeString("<draw:layer-set>\n");
+    outs.writeString("    <draw:layer draw:name=\"layout\"/>\n");
+    outs.writeString("    <draw:layer draw:name=\"background\"/>\n");
+    outs.writeString("    <draw:layer draw:name=\"backgroundobjects\"/>\n");
+    outs.writeString("    <draw:layer draw:name=\"controls\"/>\n");
+    outs.writeString("    <draw:layer draw:name=\"measurelines\"/>\n");
+    outs.writeString("</draw:layer-set>\n");
+    outs.writeString("\n");
+    outs.writeString("<style:master-page style:name=\"Default\"\n");
+    outs.writeString("    style:page-master-name=\"PM1\" draw:style-name=\"dp1\"/>\n");
+    outs.writeString("</office:master-styles>\n");
+    outs.writeString("\n");
+    outs.writeString("</office:document-styles>\n");
+
+    return true;
+}
+
+
+/**
+ * Write the header for the content.xml file
+ */
+bool OdfOutput::writeContentHeader(Writer &outs)
+{
+    time_t tim;
+    time(&tim);
+
+    outs.writeString("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n");
+    outs.writeString("\n");
+    outs.writeString("<!--\n");
+    outs.writeString("*************************************************************************\n");
+    outs.writeString("  file:  content.xml\n");
+    outs.printf     ("  Generated by Inkscape: %s", ctime(&tim)); //ctime has its own <cr>
+    outs.writeString("  http://www.inkscape.org\n");
+    outs.writeString("*************************************************************************\n");
+    outs.writeString("-->\n");
+    outs.writeString("\n");
+    outs.writeString("<office:document-content\n");
+    outs.writeString("    xmlns:office=\"urn:oasis:names:tc:opendocument:xmlns:office:1.0\"\n");
+    outs.writeString("    xmlns:style=\"urn:oasis:names:tc:opendocument:xmlns:style:1.0\"\n");
+    outs.writeString("    xmlns:text=\"urn:oasis:names:tc:opendocument:xmlns:text:1.0\"\n");
+    outs.writeString("    xmlns:table=\"urn:oasis:names:tc:opendocument:xmlns:table:1.0\"\n");
+    outs.writeString("    xmlns:draw=\"urn:oasis:names:tc:opendocument:xmlns:drawing:1.0\"\n");
+    outs.writeString("    xmlns:fo=\"urn:oasis:names:tc:opendocument:xmlns:xsl-fo-compatible:1.0\"\n");
+    outs.writeString("    xmlns:xlink=\"http://www.w3.org/1999/xlink\"\n");
+    outs.writeString("    xmlns:dc=\"http://purl.org/dc/elements/1.1/\"\n");
+    outs.writeString("    xmlns:meta=\"urn:oasis:names:tc:opendocument:xmlns:meta:1.0\"\n");
+    outs.writeString("    xmlns:number=\"urn:oasis:names:tc:opendocument:xmlns:datastyle:1.0\"\n");
+    outs.writeString("    xmlns:presentation=\"urn:oasis:names:tc:opendocument:xmlns:presentation:1.0\"\n");
+    outs.writeString("    xmlns:svg=\"urn:oasis:names:tc:opendocument:xmlns:svg-compatible:1.0\"\n");
+    outs.writeString("    xmlns:chart=\"urn:oasis:names:tc:opendocument:xmlns:chart:1.0\"\n");
+    outs.writeString("    xmlns:dr3d=\"urn:oasis:names:tc:opendocument:xmlns:dr3d:1.0\"\n");
+    outs.writeString("    xmlns:math=\"http://www.w3.org/1998/Math/MathML\"\n");
+    outs.writeString("    xmlns:form=\"urn:oasis:names:tc:opendocument:xmlns:form:1.0\"\n");
+    outs.writeString("    xmlns:script=\"urn:oasis:names:tc:opendocument:xmlns:script:1.0\"\n");
+    outs.writeString("    xmlns:ooo=\"http://openoffice.org/2004/office\"\n");
+    outs.writeString("    xmlns:ooow=\"http://openoffice.org/2004/writer\"\n");
+    outs.writeString("    xmlns:oooc=\"http://openoffice.org/2004/calc\"\n");
+    outs.writeString("    xmlns:dom=\"http://www.w3.org/2001/xml-events\"\n");
+    outs.writeString("    xmlns:xforms=\"http://www.w3.org/2002/xforms\"\n");
+    outs.writeString("    xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\"\n");
+    outs.writeString("    xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"\n");
+    outs.writeString("    xmlns:smil=\"urn:oasis:names:tc:opendocument:xmlns:smil-compatible:1.0\"\n");
+    outs.writeString("    xmlns:anim=\"urn:oasis:names:tc:opendocument:xmlns:animation:1.0\"\n");
+    outs.writeString("    office:version=\"1.0\">\n");
+    outs.writeString("<office:scripts/>\n");
+    outs.writeString("\n");
+    outs.writeString("<!--\n");
+    outs.writeString("*************************************************************************\n");
+    outs.writeString("  D R A W I N G\n");
+    outs.writeString("  This section is the heart of SVG-ODF conversion.  We are\n");
+    outs.writeString("  starting with simple conversions, and will slowly evolve\n");
+    outs.writeString("  into a 'smarter' translation as time progresses.  Any help\n");
+    outs.writeString("  in improving .odg export is welcome.\n");
+    outs.writeString("*************************************************************************\n");
+    outs.writeString("-->\n");
+    outs.writeString("\n");
+    outs.writeString("<office:body>\n");
+    outs.writeString("<office:drawing>\n");
+    outs.writeString("<draw:page draw:name=\"page1\" draw:style-name=\"dp1\"\n");
+    outs.writeString("        draw:master-page-name=\"Default\">\n");
+    outs.writeString("\n");
+    return true;
+}
+
+
+/**
+ * Write the footer for the content.xml file
+ */
+bool OdfOutput::writeContentFooter(Writer &outs)
+{
+    outs.writeString("\n");
+    outs.writeString("</draw:page>\n");
+    outs.writeString("</office:drawing>\n");
+    outs.writeString("\n");
+    outs.writeString("<!-- ######### CONVERSION FROM SVG ENDS ######## -->\n");
+    outs.writeString("\n");
+    outs.writeString("</office:body>\n");
+    outs.writeString("</office:document-content>\n");
+    return true;
+}
+
+
+/**
+ * Write the content.xml file. Writes the namespace headers, then
+ * calls writeTree().
+ */
+bool OdfOutput::writeContent(ZipFile &zf, SPDocument *doc)
+{
+    //Content.xml stream
+    BufferOutputStream cbouts;
+    OutputStreamWriter couts(cbouts);
+
+    if (!writeContentHeader(couts))
+    {
+        return false;
+    }
+
+    //Style.xml stream
+    BufferOutputStream sbouts;
+    OutputStreamWriter souts(sbouts);
+
+    if (!writeStyleHeader(souts))
+    {
+        return false;
+    }
+
+    //# Descend into the tree, doing all of our conversions
+    //# to both files at the same time
+    char *oldlocale = g_strdup (setlocale (LC_NUMERIC, nullptr));
+    setlocale (LC_NUMERIC, "C");
+    if (!writeTree(couts, souts, doc, doc->getReprRoot()))
+    {
+        g_warning("Failed to convert SVG tree");
+        setlocale (LC_NUMERIC, oldlocale);
+        g_free (oldlocale);
+        return false;
+    }
+    setlocale (LC_NUMERIC, oldlocale);
+    g_free (oldlocale);
+
+    //# Finish content file
+    if (!writeContentFooter(couts))
+    {
+        return false;
+    }
+
+    ZipEntry *ze = zf.newEntry("content.xml", "ODF master content file");
+    ze->setUncompressedData(cbouts.getBuffer());
+    ze->finish();
+
+    //# Finish style file
+    if (!writeStyleFooter(souts))
+    {
+        return false;
+    }
+
+    ze = zf.newEntry("styles.xml", "ODF style file");
+    ze->setUncompressedData(sbouts.getBuffer());
+    ze->finish();
+
+    return true;
+}
+
+
+/**
+ * Resets class to its pristine condition, ready to use again
+ */
+void OdfOutput::reset()
+{
+    metadata.clear();
+    styleTable.clear();
+    styleLookupTable.clear();
+    gradientTable.clear();
+    gradientLookupTable.clear();
+    imageTable.clear();
+}
+
+
+/**
+ * Descends into the SVG tree, mapping things to ODF when appropriate
+ */
+void OdfOutput::save(Inkscape::Extension::Output */*mod*/, SPDocument *doc, gchar const *filename)
+{
+    reset();
+
+    docBaseUri = Inkscape::URI::from_dirname(doc->getDocumentBase()).str();
+
+    ZipFile zf;
+    preprocess(zf, doc, doc->getReprRoot());
+
+    if (!writeManifest(zf))
+        {
+        g_warning("Failed to write manifest");
+        return;
+        }
+
+    if (!writeContent(zf, doc))
+        {
+        g_warning("Failed to write content");
+        return;
+        }
+
+    if (!writeMeta(zf))
+        {
+        g_warning("Failed to write metafile");
+        return;
+        }
+
+    if (!zf.writeFile(filename))
+        {
+        return;
+        }
+}
+
+
+/**
+ * This is the definition of PovRay output.  This function just
+ * calls the extension system with the memory allocated XML that
+ * describes the data.
+*/
+void OdfOutput::init()
+{
+    // clang-format off
+    Inkscape::Extension::build_from_mem(
+        "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
+            "<name>" N_("OpenDocument Drawing Output") "</name>\n"
+            "<id>org.inkscape.output.odf</id>\n"
+            "<output>\n"
+                "<extension>.odg</extension>\n"
+                "<mimetype>text/x-povray-script</mimetype>\n"
+                "<filetypename>" N_("OpenDocument drawing (*.odg)") "</filetypename>\n"
+                "<filetypetooltip>" N_("OpenDocument drawing file") "</filetypetooltip>\n"
+            "</output>\n"
+        "</inkscape-extension>",
+        new OdfOutput());
+    // clang-format on
+}
+
+/**
+ * Make sure that we are in the database
+ */
+bool OdfOutput::check (Inkscape::Extension::Extension */*module*/)
+{
+    /* We don't need a Key
+    if (NULL == Inkscape::Extension::db.get(SP_MODULE_KEY_OUTPUT_POV))
+        return FALSE;
+    */
+
+    return TRUE;
+}
+
+}  //namespace Internal
+}  //namespace Extension
+}  //namespace Inkscape
+
+
+//########################################################################
+//# E N D    O F    F I L E
+//########################################################################
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :