Added appdata.xml.

leocad.pro

@@ -104,6 +104,7 @@ unix:!macx {
 	isEmpty(DESKTOP_DIR):DESKTOP_DIR = $$INSTALL_PREFIX/share/applications
 	isEmpty(MIME_DIR):MIME_DIR = $$INSTALL_PREFIX/share/mime/packages
 	isEmpty(MIME_ICON_DIR):MIME_ICON_DIR = $$INSTALL_PREFIX/share/icons/hicolor/scalable/mimetypes
+	isEmpty(APPDATA_DIR):ICON_DIR = $$INSTALL_PREFIX/share/metainfo
 
 	target.path = $$BIN_DIR
 	docs.path = $$DOCS_DIR
@@ -118,8 +119,10 @@ unix:!macx {
 	mime.files = qt/leocad.xml
 	mime_icon.path = $$MIME_ICON_DIR
 	mime_icon.files = resources/application-vnd.leocad.svg
-
-	INSTALLS += target docs man desktop icon mime mime_icon
+	appdata.path = $$APPDATA_DIR
+	appdata.files = tools/setup/leocad.appdata.xml
+	
+	INSTALLS += target docs man desktop icon mime mime_icon appdata
 
 	!isEmpty(DISABLE_UPDATE_CHECK) {
 		DEFINES += LC_DISABLE_UPDATE_CHECK=$$DISABLE_UPDATE_CHECK

tools/setup/leocad.appdata.xml

@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<component type="desktop-application">
+	<id>leocad</id>
+	<metadata_license>GPL-2.0</metadata_license>
+	<project_license>GPL-2.0</project_license>
+	<name>LeoCAD</name>
+	<summary>Design virtual models you can build with LEGO bricks</summary>
+	<description>
+		<p>LeoCAD is a CAD program for creating virtual LEGO models. It's available for free under the GNU Public License v2 and works on the Windows, Linux and macOS Operating Systems.</p>
+	</description>
+	<launchable type="desktop-id">leocad.desktop</launchable>
+	<url type="homepage">https://leocad.org/</url>
+	<screenshots>
+		<screenshot type="default">
+			<image>https://www.leocad.org/towerbridge.png</image>
+		</screenshot>
+	</screenshots>
+	<provides>
+		<id>leocad.desktop</id>
+	</provides>
+</component>