Generate labels with pangocairo (#8)

Goal of this PR is to have some basic labels generated with pangocairo
- size of the canvas should be matching the input text and grow/shrink accordingly
- basic formatting options like fontsize and align should be working

Reviewed-on: moritz/ptouch-prnt#8

generate_coverage.sh

@@ -2,6 +2,7 @@
 
 SCRIPT_PATH="$( cd -- "$(dirname "$0")" >/dev/null 2>&1 ; pwd -P )"
 HTML_COV_PATH="coverageReport/html"
+XML_COV_PATH="coverageReport/xml"
 HTML_START_FILE="index.html"
 
 echo "Generating Coverage report for ptouch-prnt"
@@ -12,10 +13,15 @@ ninja -C builddir test
 mkdir -p ${HTML_COV_PATH}
 gcovr --html --html-details --html-syntax-highlighting --filter src --output ${HTML_COV_PATH}/${HTML_START_FILE}
 
+mkdir -p ${XML_COV_PATH}
+gcovr --xml-pretty --filter src --output ${XML_COV_PATH}/cov.xml
+
 if [ $? ] 
 then
   echo "Coverage report successful generated!"
   echo "Open: file://${SCRIPT_PATH}/${HTML_COV_PATH}/${HTML_START_FILE}"
 else
   echo "Error generating coverage report!"
-fi
+fi
+
+rm *.gcov