[gnumeric] xslx: fix rainbow effect in XL.

[Morten Welinder <mortenw src gnome org>]

commit dc1cba475cc551616436f2c0004696c883928d13
Author: Morten Welinder <terra gnome org>
Date:   Wed Jan 21 10:54:18 2015 -0500

    xslx: fix rainbow effect in XL.

 plugins/excel/ChangeLog            |    5 +++++
 plugins/excel/xlsx-write-drawing.c |    9 ++++++---
 2 files changed, 11 insertions(+), 3 deletions(-)
---
diff --git a/plugins/excel/ChangeLog b/plugins/excel/ChangeLog
index c7c2514..e4f339b 100644
--- a/plugins/excel/ChangeLog
+++ b/plugins/excel/ChangeLog
@@ -1,3 +1,8 @@
+2015-01-21  Morten Welinder  <terra gnome org>
+
+       * xlsx-write-drawing.c (xlsx_write_one_plot): varyColor defaults
+       to TRUE, so be sure to output it for line plots etc.
+
 2015-01-20  Morten Welinder  <terra gnome org>
 
        * xlsx-write-drawing.c (xlsx_write_one_plot): Initial export of
diff --git a/plugins/excel/xlsx-write-drawing.c b/plugins/excel/xlsx-write-drawing.c
index 1d67558..455ca8b 100644
--- a/plugins/excel/xlsx-write-drawing.c
+++ b/plugins/excel/xlsx-write-drawing.c
@@ -425,6 +425,7 @@ xlsx_write_one_plot (XLSXWriteState *state, GsfXMLOut *xml, GogObject const *cha
        case XLSX_PT_GOGAREAPLOT:
                gsf_xml_out_start_element (xml, "c:areaChart");
                xlsx_write_plot_1_5_type (xml, plot, FALSE);
+               xlsx_write_chart_bool (xml, "c:varyColors", vary_by_element);
                break;
 
        case XLSX_PT_GOGBARCOLPLOT: {
@@ -441,18 +442,20 @@ xlsx_write_one_plot (XLSXWriteState *state, GsfXMLOut *xml, GogObject const *cha
                                                 horizontal ? "bar" : "col");
 
                xlsx_write_plot_1_5_type (xml, plot, TRUE);
+               xlsx_write_chart_bool (xml, "c:varyColors", vary_by_element);
                break;
        }
 
        case XLSX_PT_GOGLINEPLOT:
                gsf_xml_out_start_element (xml, "c:lineChart");
                xlsx_write_plot_1_5_type (xml, plot, FALSE);
+               xlsx_write_chart_bool (xml, "c:varyColors", vary_by_element);
                break;
 
        case XLSX_PT_GOGPIEPLOT:
-       case XLSX_PT_GOGRINGPLOT: {
-               gint16 center = 0;
+       case XLSX_PT_GOGRINGPLOT:
                if (plot_type == XLSX_PT_GOGRINGPLOT) {
+                       gint16 center;
                        double center_size;
                        gsf_xml_out_start_element (xml, "c:doughnutChart");
                        g_object_get (G_OBJECT (plot), "center-size", &center_size, NULL);
@@ -472,7 +475,6 @@ xlsx_write_one_plot (XLSXWriteState *state, GsfXMLOut *xml, GogObject const *cha
                axis_type[0] = axis_type[1] = GOG_AXIS_UNKNOWN;
                g_object_get (G_OBJECT (plot), "default-separation", &explosion, NULL);
                break;
-       }
 
        case XLSX_PT_GOGRADARPLOT:
        case XLSX_PT_GOGRADARAREAPLOT:
@@ -504,6 +506,7 @@ xlsx_write_one_plot (XLSXWriteState *state, GsfXMLOut *xml, GogObject const *cha
                use_xy = TRUE;
                gsf_xml_out_start_element (xml, "c:scatterChart");
                xlsx_write_chart_cstr_unchecked (xml, "c:scatterStyle", style);
+               xlsx_write_chart_bool (xml, "c:varyColors", vary_by_element);
                break;
        }