Pipette and "On Preview Widgets" branch. See issue 227

The pipette part is already working quite nice but need to be finished. The widgets part needs more work...

tools/source_icons/script/svg2png.bash

@@ -0,0 +1,60 @@
+#! /bin/bash
+
+### arg1 : this script  takes as input a directory which
+### contains the svg files for the gold standard icon set.
+### arg2: it creates in the output directory the png files
+### for the desired size
+
+
+DIR_IN=$1
+DIR_OUT=$2
+
+DIR_TMP=/tmp
+
+if [ $# -ne 2 ]
+then
+    echo "Usage: $(basename $0) {input svg directory} {output  directory} {width (in pixel)}"
+    exit 0
+fi
+
+if [ ! -d $DIR_OUT/actions ]
+then
+    mkdir $DIR_OUT/actions
+fi
+
+if [ ! -d $DIR_OUT/devices ]
+then
+    mkdir $DIR_OUT/devices
+fi
+
+if [ ! -d $DIR_OUT/places ]
+then
+    mkdir $DIR_OUT/places
+fi
+
+
+
+for SVG in $(ls $DIR_IN/*.svg)
+do
+    echo $SVG
+
+    FILE=$(basename $SVG)
+    FILE_NAME=${FILE%.svg}
+    FILE=$FILE_NAME.file
+
+    if [ -f $DIR_TMP/$FILE_NAME.bash ]
+    then
+	rm $DIR_TMP/$FILE_NAME.bash
+    fi
+
+    echo "#! /bin/bash" > $DIR_TMP/$FILE_NAME.bash
+    awk -v s="$SVG" -v d="$DIR_OUT"  -F, '{print "inkscape " s " --export-png=" d "/" $1 " -" $2}' $DIR_IN/$FILE >> $DIR_TMP/$FILE_NAME.bash
+
+    awk -v s="$SVG" -v d="$DIR_OUT"  -F, '{print  "mv " d "/" $1  " " d "/" $3}' $DIR_IN/$FILE >> $DIR_TMP/$FILE_NAME.bash
+
+    chmod +x $DIR_TMP/$FILE_NAME.bash
+    $DIR_TMP/$FILE_NAME.bash
+
+    rm $DIR_TMP/$FILE_NAME.bash
+
+done