[gnumeric] xlsx: fix export of images.

[Morten Welinder <mortenw src gnome org>]

commit 8c7abe084767862ef3d6c54365f639b1df02be0d
Author: Morten Welinder <terra gnome org>
Date:   Wed Mar 4 11:09:56 2015 -0500

    xlsx: fix export of images.
    
    XL is now happy to read the image.

 plugins/excel/ChangeLog            |    5 +++++
 plugins/excel/xlsx-write-drawing.c |    6 +++++-
 plugins/excel/xlsx-write.c         |    2 ++
 3 files changed, 12 insertions(+), 1 deletions(-)
---
diff --git a/plugins/excel/ChangeLog b/plugins/excel/ChangeLog
index dfc4d79..1cee105 100644
--- a/plugins/excel/ChangeLog
+++ b/plugins/excel/ChangeLog
@@ -1,3 +1,8 @@
+2015-03-04  Morten Welinder  <terra gnome org>
+
+       * xlsx-write-drawing.c (xlsx_write_drawing_objects): Fix
+       relationship.  Write a prstGeom for the image.
+
 2015-03-01  Morten Welinder  <terra gnome org>
 
        * ms-excel-read.c (ms_sheet_realize_obj): Don't let the sheet
diff --git a/plugins/excel/xlsx-write-drawing.c b/plugins/excel/xlsx-write-drawing.c
index 639a839..469b22f 100644
--- a/plugins/excel/xlsx-write-drawing.c
+++ b/plugins/excel/xlsx-write-drawing.c
@@ -1263,7 +1263,7 @@ xlsx_write_drawing_objects (XLSXWriteState *state, GsfOutput *sheet_part,
                                 NULL);
                        rId1 = gsf_outfile_open_pkg_relate (GSF_OUTFILE_OPEN_PKG (image_part),
                                                            GSF_OUTFILE_OPEN_PKG (drawing_part),
-                                                           ns_rel_chart);
+                                                           ns_rel_image);
                        sheet_object_write_image (so, NULL, -1, image_part, NULL);
                        gsf_output_close (image_part);
                        g_object_unref (image_part);
@@ -1369,6 +1369,10 @@ xlsx_write_drawing_objects (XLSXWriteState *state, GsfOutput *sheet_part,
                        gsf_xml_out_end_element (xml); /* </xdr:blipFill> */
 
                        gsf_xml_out_start_element (xml, "xdr:spPr");
+                       gsf_xml_out_start_element (xml, "a:prstGeom");
+                       gsf_xml_out_add_cstr (xml, "prst", "rect");
+                       gsf_xml_out_simple_element (xml, "a:avLst", NULL);
+                       gsf_xml_out_end_element (xml); /* </a:prstGeom> */
                        gsf_xml_out_end_element (xml); /* </xdr:spPr> */
 
                        gsf_xml_out_end_element (xml); /* </xdr:pic> */
diff --git a/plugins/excel/xlsx-write.c b/plugins/excel/xlsx-write.c
index ca89c2c..5d19972 100644
--- a/plugins/excel/xlsx-write.c
+++ b/plugins/excel/xlsx-write.c
@@ -109,6 +109,8 @@ static char const *ns_rel_draw       = "http://schemas.openxmlformats.org/officeDocum
 static char const *ns_rel_leg_draw = 
"http://schemas.openxmlformats.org/officeDocument/2006/relationships/vmlDrawing";;
 static char const *ns_rel_chart         = 
"http://schemas.openxmlformats.org/officeDocument/2006/relationships/chart";;
 static char const *ns_rel_com   = 
"http://schemas.openxmlformats.org/officeDocument/2006/relationships/comments";;
+static char const *ns_rel_image         = 
"http://schemas.openxmlformats.org/officeDocument/2006/relationships/image";;
+
 
 typedef struct {
        unsigned int count;