tdf#108065 tdf#128609 OOXML chart export: fix transparent color gradient

Linear and axial color gradients keep their solid or gradient
transparencies.

Change-Id: I37dfe016864bded49c767cea5c8c865455281de0
Reviewed-on: https://gerrit.libreoffice.org/81308
Reviewed-by: László Németh <nemeth@numbertext.org>
Tested-by: László Németh <nemeth@numbertext.org>

3 files changed, 28 insertions, 0 deletions

diff --git a/chart2/qa/extras/chart2export.cxx b/chart2/qa/extras/chart2export.cxx
index 694ba5501043..5f2b9ee6825b 100644
--- a/chart2/qa/extras/chart2export.cxx
+++ b/chart2/qa/extras/chart2export.cxx
@@ -89,6 +89,8 @@ public:
     void testChartTitlePropertiesColorFillDOCX();
     void testChartTitlePropertiesGradientFillDOCX();
     void testChartTitlePropertiesBitmapFillDOCX();
+    void testColorGradientWithTransparancyDOCX();
+    void testColorGradientWithTransparancyODS();
     void testBarChartDataPointPropDOCX();
     void testFdo83058dlblPos();
     void testAutoTitleDelXLSX();
@@ -195,6 +197,8 @@ public:
     CPPUNIT_TEST(testChartTitlePropertiesColorFillDOCX);
     CPPUNIT_TEST(testChartTitlePropertiesGradientFillDOCX);
     CPPUNIT_TEST(testChartTitlePropertiesBitmapFillDOCX);
+    CPPUNIT_TEST(testColorGradientWithTransparancyDOCX);
+    CPPUNIT_TEST(testColorGradientWithTransparancyODS);
     CPPUNIT_TEST(testBarChartDataPointPropDOCX);
     CPPUNIT_TEST(testFdo83058dlblPos);
     CPPUNIT_TEST(testAutoTitleDelXLSX);
@@ -1219,6 +1223,30 @@ void Chart2ExportTest::testChartTitlePropertiesBitmapFillDOCX()
     assertXPath(pXmlDoc, "/c:chartSpace/c:chart/c:title/c:spPr/a:ln/a:noFill", 1);
 }
 
+void Chart2ExportTest::testColorGradientWithTransparancyDOCX()
+{
+    // Test color gradient (two color) with gradient transparency
+    load("/chart2/qa/extras/data/docx/", "testColorGradientWithTransparancy.docx");
+    xmlDocPtr pXmlDoc = parseExport("word/charts/chart", "Office Open XML Text");
+    CPPUNIT_ASSERT(pXmlDoc);
+    // Test the transparency of the first color
+    assertXPath(pXmlDoc, "/c:chartSpace/c:chart/c:plotArea/c:barChart/c:ser/c:spPr/a:gradFill/a:gsLst/a:gs[1]/a:srgbClr/a:alpha", "val", "60000");
+    // Test the transparency of the second color
+    assertXPath(pXmlDoc, "/c:chartSpace/c:chart/c:plotArea/c:barChart/c:ser/c:spPr/a:gradFill/a:gsLst/a:gs[2]/a:srgbClr/a:alpha", "val", "90196");
+}
+
+void Chart2ExportTest::testColorGradientWithTransparancyODS()
+{
+    // Test color gradient (two color) with simple transparency
+    load("/chart2/qa/extras/data/ods/", "testColorGradientWithTransparancy.ods");
+    xmlDocPtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office Open XML");
+    CPPUNIT_ASSERT(pXmlDoc);
+    // Test the transparency of the first color
+    assertXPath(pXmlDoc, "/c:chartSpace/c:chart/c:plotArea/c:barChart/c:ser/c:spPr/a:gradFill/a:gsLst/a:gs[1]/a:srgbClr/a:alpha", "val", "60000");
+    // Test the transparency of the second color
+    assertXPath(pXmlDoc, "/c:chartSpace/c:chart/c:plotArea/c:barChart/c:ser/c:spPr/a:gradFill/a:gsLst/a:gs[2]/a:srgbClr/a:alpha", "val", "60000");
+}
+
 void Chart2ExportTest::testBarChartDataPointPropDOCX()
 {
     load("/chart2/qa/extras/data/docx/", "testBarChartDataPointPropDOCX.docx");
diff --git a/chart2/qa/extras/data/docx/testColorGradientWithTransparancy.docx b/chart2/qa/extras/data/docx/testColorGradientWithTransparancy.docx
new file mode 100644
index 000000000000..adc2aff042bf
--- /dev/null
+++ b/chart2/qa/extras/data/docx/testColorGradientWithTransparancy.docx
diff --git a/chart2/qa/extras/data/ods/testColorGradientWithTransparancy.ods b/chart2/qa/extras/data/ods/testColorGradientWithTransparancy.ods
new file mode 100644
index 000000000000..d8a41c02c186
--- /dev/null
+++ b/chart2/qa/extras/data/ods/testColorGradientWithTransparancy.ods