widget-factory: add icon

demos/widget-factory/Makefile.am

@@ -28,6 +28,36 @@ gtk3_widget_factory_LDADD = \
 widget_factory_resources.c: widget-factory.gresource.xml $(shell $(GLIB_COMPILE_RESOURCES) --sourcedir=$(srcdir) --generate-dependencies $(srcdir)/widget-factory.gresource.xml)
 	$(AM_V_GEN) $(GLIB_COMPILE_RESOURCES) --target=$@ --sourcedir=$(srcdir) --generate-source $<
 
+
+iconthemedir = $(datadir)/icons/hicolor
+
+appsicon16dir = $(iconthemedir)/16x16/apps
+appsicon22dir = $(iconthemedir)/22x22/apps
+appsicon24dir = $(iconthemedir)/24x24/apps
+appsicon32dir = $(iconthemedir)/32x32/apps
+appsicon48dir = $(iconthemedir)/48x48/apps
+appsicon256dir = $(iconthemedir)/256x256/apps
+
+dist_appsicon16_DATA = data/16x16/gtk3-widget-factory.png
+dist_appsicon22_DATA = data/22x22/gtk3-widget-factory.png
+dist_appsicon24_DATA = data/24x24/gtk3-widget-factory.png
+dist_appsicon32_DATA = data/32x32/gtk3-widget-factory.png
+dist_appsicon48_DATA = data/48x48/gtk3-widget-factory.png
+dist_appsicon256_DATA = data/256x256/gtk3-widget-factory.png
+
+update_icon_cache = gtk-update-icon-cache --ignore-theme-index --force
+
+install-data-hook: install-update-icon-cache
+uninstall-hook: uninstall-update-icon-cache
+
+install-update-icon-cache:
+	$(AM_V_at)$(POST_INSTALL)
+	test -n "$(DESTDIR)" || $(update_icon_cache) "$(iconthemedir)"
+
+uninstall-update-icon-cache:
+	$(AM_V_at)$(POST_UNINSTALL)
+	test -n "$(DESTDIR)" || $(update_icon_cache) "$(iconthemedir)"
+
 EXTRA_DIST += \
 	widget-factory.ui \
 	widget-factory.gresource.xml \

demos/widget-factory/gtk3-widget-factory.desktop

@@ -2,7 +2,7 @@
 Name=Widget Factory
 Comment=A showcase for GTK+ widgets, designed for testing themes.
 Exec=gtk3-widget-factory
-Icon=
+Icon=gtk3-widget-factory
 Terminal=false
 Type=Application
 StartupNotify=true