Add initial drop of non-default Leap 16 wallpapers (#19)

* Add initial drop of non-default Leap 16 wallpapers

* Factory will simply use latest Leap wallpaper drop
  we intend to suggest package from branding-openSUSE package
* Gecko from Photo competition gh##18
* Gradient with the new lcp's project logo
  gh#openSUSE/branding#156

* Install wallpapers from all releases
   split will happen in the spec file

* Check for .svg existance in leap* dir

* Use -o2 (-o5 takes way too long for 4096x4096)

* Install xml and jpg files only where available

Makefile

@@ -1,6 +1,25 @@
-install: 
-	mkdir -p /usr/share/gnome-background-properties/
-	install -D -m 0644 wallpapers-leap15.xml ${DESTDIR}/usr/share/gnome-background-properties/wallpapers-leap15.xml
-	mkdir -p /usr/share/wallpapers/leap15/
-	install -D -m 0644 leap15/*.jpg ${DESTDIR}/usr/share/wallpapers/leap15/
-	install -D -m 0644 leap15/*.xml ${DESTDIR}/usr/share/wallpapers/leap15/
+LEAP_DIRS = $(wildcard leap*)
+
+install:
+	for dir in $(LEAP_DIRS); do \
+		VERSION=$$(echo $${dir} | sed 's/leap//'); \
+		mkdir -p ${DESTDIR}/usr/share/gnome-background-properties/; \
+		install -D -m 0644 wallpapers-leap$${VERSION}.xml ${DESTDIR}/usr/share/gnome-background-properties/wallpapers-leap$${VERSION}.xml; \
+		mkdir -p ${DESTDIR}/usr/share/wallpapers/leap$${VERSION}/; \
+		if ls $${dir}/*.svg >/dev/null 2>&1; then \
+			for svg in $${dir}/*.svg; do \
+				png_file=${DESTDIR}/usr/share/wallpapers/leap$${VERSION}/`basename $${svg} .svg`.png; \
+				rsvg-convert $${svg} -o $${png_file}; \
+				optipng -o2 $${png_file}; \
+			done; \
+		fi; \
+		if ls $${dir}/*.jpg >/dev/null 2>&1; then \
+			install -D -m 0644 $${dir}/*.jpg ${DESTDIR}/usr/share/wallpapers/leap$${VERSION}/; \
+		fi; \
+		if ls $${dir}/*.xml >/dev/null 2>&1; then \
+			install -D -m 0644 $${dir}/*.xml ${DESTDIR}/usr/share/wallpapers/leap$${VERSION}/; \
+		fi; \
+		if ls $${dir}/*.png >/dev/null 2>&1; then \
+			install -D -m 0644 $${dir}/*.png ${DESTDIR}/usr/share/wallpapers/leap$${VERSION}/; \
+		fi; \
+	done

README.md

@@ -1,11 +1,15 @@
-# wallpapers
+# wallpapers-openSUSE-extra
 
-Contest is over, better luck next time :D
+Additional community wallpapers available for Leap and Tumbleweed.
+wallpapers-openSUSE-extra is suggested by [branding-openSUSE](https://github.com/openSUSE/branding) and completes the wallpaper selection
+for individual releases aside from default wallpaper.
 
-~~**openSUSE wallpaper contest**~~
+# How to build the package?
 
-~~Resolution: 4K +~~
+Package needs to be updated in [X11:common:Factory/wallpapers-openSUSE-extra](https://build.opensuse.org/package/show/X11:common:Factory/wallpapers-openSUSE-extra). And submited to openSUSE:Factory and openSUSE:Leap:16.X projects.
 
-~~License: CC allowing for commercial use (attatched in seperate TXT file)~~
+Please be aware that pngs are rendered from svgs at build time. Aside from photos we only intend to store svgs in this repository.
 
-~~Pull request welcome :D~~
+# Where are the default wallpapers?
+
+The default wallpapers are stored in release specific branch of [openSUSE/branding](https://github.com/openSUSE/branding) and built in [Base:System/branding-openSUSE](https://build.opensuse.org/package/show/Base:System/branding-openSUSE). Aditionally GNOME has dconf defaults preset in [GNOME:Factory/glib2-branding](https://build.opensuse.org/package/show/GNOME:Factory/glib2-branding). Each Window Manager might have additional metadata in respective -branding packages.

leap16/license/license_arwinneil.txt

@@ -0,0 +1,4 @@
+blue_tailed_day_gecko_ebony_forest_mauritius.jpg
+was released under Public Domain by Arwin Neil Baichoo
+
+https://www.inaturalist.org/photos/412551389

wallpapers-leap16.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0"?>
+<!DOCTYPE wallpapers SYSTEM "gnome-wp-list.dtd">
+<wallpapers>
+	<wallpaper>
+		<name>Project gradient</name>
+		<filename>/usr/share/wallpapers/leap16/project.png</filename>
+		<options>zoom</options>
+	</wallpaper>
+	<wallpaper>
+		<name>Blue-Tailed Day Gecko in the Ebony Forest of Mauritius</name>
+		<filename>/usr/share/wallpapers/leap16/blue_tailed_day_gecko_ebony_forest_mauritius.jpg</filename>
+		<options>zoom</options>
+	</wallpaper>
+</wallpapers>