Adding upstream version 2.10.36.upstream/2.10.36

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

14 files changed, 4428 insertions, 0 deletions

diff --git a/libgimpthumb/Makefile.am b/libgimpthumb/Makefile.am
new file mode 100644
index 0000000..2655379
--- /dev/null
+++ b/libgimpthumb/Makefile.am
@@ -0,0 +1,137 @@
+## Process this file with automake to produce Makefile.in
+
+libgimpbase = $(top_builddir)/libgimpbase/libgimpbase-$(GIMP_API_VERSION).la
+
+if PLATFORM_WIN32
+no_undefined = -no-undefined
+endif
+
+if PLATFORM_OSX
+xobjective_c = "-xobjective-c"
+xobjective_cxx = "-xobjective-c++"
+xnone = "-xnone"
+framework_cocoa = -framework Cocoa
+endif
+
+if OS_WIN32
+gimpthumb_def = gimpthumb.def
+libgimpthumb_export_symbols = -export-symbols $(srcdir)/gimpthumb.def
+
+install-libtool-import-lib:
+	$(INSTALL) .libs/libgimpthumb-$(GIMP_API_VERSION).dll.a $(DESTDIR)$(libdir)
+	$(INSTALL) $(srcdir)/gimpthumb.def $(DESTDIR)$(libdir)
+
+uninstall-libtool-import-lib:
+	-rm $(DESTDIR)$(libdir)/libgimpthumb-$(GIMP_API_VERSION).dll.a
+	-rm $(DESTDIR)$(libdir)/gimpthumb.def
+else
+install-libtool-import-lib:
+uninstall-libtool-import-lib:
+endif
+
+if MS_LIB_AVAILABLE
+noinst_DATA = gimpthumb-$(GIMP_API_VERSION).lib
+
+install-ms-lib:
+	$(INSTALL) gimpthumb-$(GIMP_API_VERSION).lib $(DESTDIR)$(libdir)
+
+uninstall-ms-lib:
+	-rm $(DESTDIR)$(libdir)/gimpthumb-$(GIMP_API_VERSION).lib
+
+gimpthumb-@GIMP_API_VERSION@.lib: gimpthumb.def
+	lib -name:libgimpthumb-$(GIMP_API_VERSION)-@LT_CURRENT_MINUS_AGE@.dll -def:gimpthumb.def -out:$@
+
+else
+install-ms-lib:
+uninstall-ms-lib:
+endif
+
+libgimpthumbincludedir = $(includedir)/gimp-$(GIMP_API_VERSION)/libgimpthumb
+
+AM_CPPFLAGS = \
+	-DG_LOG_DOMAIN=\"LibGimpThumb\"	\
+	-DGIMP_THUMB_COMPILATION	\
+	-I$(top_srcdir)			\
+	$(GDK_PIXBUF_CFLAGS)		\
+	$(GIO_CFLAGS)			\
+	-I$(includedir)
+
+AM_CFLAGS = \
+	$(xobjective_c)
+
+AM_CXXFLAGS = \
+	$(xobjective_cxx)
+
+AM_LDFLAGS = \
+	$(xnone)
+
+EXTRA_DIST = \
+	gimpthumb.def
+
+lib_LTLIBRARIES = libgimpthumb-@GIMP_API_VERSION@.la
+
+libgimpthumb_@GIMP_API_VERSION@_la_SOURCES = \
+	gimpthumb.h		\
+	gimpthumb-enums.c	\
+	gimpthumb-enums.h	\
+	gimpthumb-error.c	\
+	gimpthumb-error.h	\
+	gimpthumb-types.h	\
+	gimpthumb-utils.c	\
+	gimpthumb-utils.h	\
+	gimpthumbnail.c		\
+	gimpthumbnail.h
+
+libgimpthumbinclude_HEADERS = \
+	gimpthumb.h		\
+	gimpthumb-enums.h	\
+	gimpthumb-error.h	\
+	gimpthumb-types.h	\
+	gimpthumb-utils.h	\
+	gimpthumbnail.h
+
+libgimpthumb_@GIMP_API_VERSION@_la_LDFLAGS = \
+	-version-info $(LT_VERSION_INFO)	\
+	$(no_undefined)				\
+	$(libgimpbase)				\
+	$(libgimpthumb_export_symbols)		\
+	$(framework_cocoa)			\
+	$(xnone)
+
+libgimpthumb_@GIMP_API_VERSION@_la_LIBADD = \
+	$(GDK_PIXBUF_LIBS)	\
+	$(GIO_LIBS)
+
+
+noinst_PROGRAMS = gimp-thumbnail-list
+
+gimp_thumbnail_list_SOURCES = gimp-thumbnail-list.c
+
+gimp_thumbnail_list_LDADD = \
+	libgimpthumb-$(GIMP_API_VERSION).la \
+	$(GDK_PIXBUF_LIBS) \
+	$(GIO_LIBS)
+
+
+install-data-local: install-ms-lib install-libtool-import-lib
+
+uninstall-local: uninstall-ms-lib uninstall-libtool-import-lib
+
+
+#
+# rules to generate built sources
+#
+# setup autogeneration dependencies
+gen_sources = xgen-tec
+CLEANFILES = $(gen_sources)
+
+gimpthumb-enums.c: $(srcdir)/gimpthumb-enums.h $(GIMP_MKENUMS) Makefile.am
+	$(AM_V_GEN) $(GIMP_MKENUMS) \
+		--fhead "#include \"config.h\"\n#include <glib-object.h>\n#include \"gimpthumb-enums.h\"" \
+		--fprod "\n/* enumerations from \"@filename@\" */" \
+		--vhead "GType\n@enum_name@_get_type (void)\n{\n  static const G@Type@Value values[] =\n  {" \
+		--vprod "    { @VALUENAME@, @valuedesc@, \"@valuenick@\" }," \
+		--vtail "    { 0, NULL, NULL }\n  };\n\n  static GType type = 0;\n\n  if (G_UNLIKELY (! type))\n    type = g_@type@_register_static (\"@EnumName@\", values);\n\n  return type;\n}\n" \
+		$< > xgen-tec \
+	&& cp xgen-tec $(@F) \
+	&& rm -f xgen-tec
diff --git a/libgimpthumb/Makefile.in b/libgimpthumb/Makefile.in
new file mode 100644
index 0000000..9348cb0
--- /dev/null
+++ b/libgimpthumb/Makefile.in
@@ -0,0 +1,1145 @@
+# Makefile.in generated by automake 1.16.3 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2020 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
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+
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+GIO_UNIX_CFLAGS = @GIO_UNIX_CFLAGS@
+GIO_UNIX_LIBS = @GIO_UNIX_LIBS@
+GIO_WINDOWS_CFLAGS = @GIO_WINDOWS_CFLAGS@
+GIO_WINDOWS_LIBS = @GIO_WINDOWS_LIBS@
+GLIB_CFLAGS = @GLIB_CFLAGS@
+GLIB_COMPILE_RESOURCES = @GLIB_COMPILE_RESOURCES@
+GLIB_GENMARSHAL = @GLIB_GENMARSHAL@
+GLIB_LIBS = @GLIB_LIBS@
+GLIB_MKENUMS = @GLIB_MKENUMS@
+GLIB_REQUIRED_VERSION = @GLIB_REQUIRED_VERSION@
+GMODULE_NO_EXPORT_CFLAGS = @GMODULE_NO_EXPORT_CFLAGS@
+GMODULE_NO_EXPORT_LIBS = @GMODULE_NO_EXPORT_LIBS@
+GMOFILES = @GMOFILES@
+GMSGFMT = @GMSGFMT@
+GOBJECT_QUERY = @GOBJECT_QUERY@
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+GS_LIBS = @GS_LIBS@
+GTKDOC_CHECK = @GTKDOC_CHECK@
+GTKDOC_CHECK_PATH = @GTKDOC_CHECK_PATH@
+GTKDOC_DEPS_CFLAGS = @GTKDOC_DEPS_CFLAGS@
+GTKDOC_DEPS_LIBS = @GTKDOC_DEPS_LIBS@
+GTKDOC_MKPDF = @GTKDOC_MKPDF@
+GTKDOC_REBASE = @GTKDOC_REBASE@
+GTK_CFLAGS = @GTK_CFLAGS@
+GTK_LIBS = @GTK_LIBS@
+GTK_MAC_INTEGRATION_CFLAGS = @GTK_MAC_INTEGRATION_CFLAGS@
+GTK_MAC_INTEGRATION_LIBS = @GTK_MAC_INTEGRATION_LIBS@
+GTK_REQUIRED_VERSION = @GTK_REQUIRED_VERSION@
+GTK_UPDATE_ICON_CACHE = @GTK_UPDATE_ICON_CACHE@
+GUDEV_CFLAGS = @GUDEV_CFLAGS@
+GUDEV_LIBS = @GUDEV_LIBS@
+HARFBUZZ_CFLAGS = @HARFBUZZ_CFLAGS@
+HARFBUZZ_LIBS = @HARFBUZZ_LIBS@
+HARFBUZZ_REQUIRED_VERSION = @HARFBUZZ_REQUIRED_VERSION@
+HAVE_CXX14 = @HAVE_CXX14@
+HAVE_FINITE = @HAVE_FINITE@
+HAVE_ISFINITE = @HAVE_ISFINITE@
+HAVE_VFORK = @HAVE_VFORK@
+HOST_GLIB_COMPILE_RESOURCES = @HOST_GLIB_COMPILE_RESOURCES@
+HTML_DIR = @HTML_DIR@
+INSTALL = @INSTALL@
+INSTALL_DATA = @INSTALL_DATA@
+INSTALL_PROGRAM = @INSTALL_PROGRAM@
+INSTALL_SCRIPT = @INSTALL_SCRIPT@
+INSTALL_STRIP_PROGRAM = @INSTALL_STRIP_PROGRAM@
+INSTOBJEXT = @INSTOBJEXT@
+INTLLIBS = @INTLLIBS@
+INTLTOOL_EXTRACT = @INTLTOOL_EXTRACT@
+INTLTOOL_MERGE = @INTLTOOL_MERGE@
+INTLTOOL_PERL = @INTLTOOL_PERL@
+INTLTOOL_REQUIRED_VERSION = @INTLTOOL_REQUIRED_VERSION@
+INTLTOOL_UPDATE = @INTLTOOL_UPDATE@
+INTLTOOL_V_MERGE = @INTLTOOL_V_MERGE@
+INTLTOOL_V_MERGE_OPTIONS = @INTLTOOL_V_MERGE_OPTIONS@
+INTLTOOL__v_MERGE_ = @INTLTOOL__v_MERGE_@
+INTLTOOL__v_MERGE_0 = @INTLTOOL__v_MERGE_0@
+INTL_MACOSX_LIBS = @INTL_MACOSX_LIBS@
+ISO_CODES_LOCALEDIR = @ISO_CODES_LOCALEDIR@
+ISO_CODES_LOCATION = @ISO_CODES_LOCATION@
+JPEG_LIBS = @JPEG_LIBS@
+JSON_GLIB_CFLAGS = @JSON_GLIB_CFLAGS@
+JSON_GLIB_LIBS = @JSON_GLIB_LIBS@
+JXL_CFLAGS = @JXL_CFLAGS@
+JXL_LIBS = @JXL_LIBS@
+JXL_THREADS_CFLAGS = @JXL_THREADS_CFLAGS@
+JXL_THREADS_LIBS = @JXL_THREADS_LIBS@
+LCMS_CFLAGS = @LCMS_CFLAGS@
+LCMS_LIBS = @LCMS_LIBS@
+LCMS_REQUIRED_VERSION = @LCMS_REQUIRED_VERSION@
+LD = @LD@
+LDFLAGS = @LDFLAGS@
+LDFLAGS_FOR_BUILD = @LDFLAGS_FOR_BUILD@
+LIBBACKTRACE_LIBS = @LIBBACKTRACE_LIBS@
+LIBHEIF_CFLAGS = @LIBHEIF_CFLAGS@
+LIBHEIF_LIBS = @LIBHEIF_LIBS@
+LIBHEIF_REQUIRED_VERSION = @LIBHEIF_REQUIRED_VERSION@
+LIBJXL_REQUIRED_VERSION = @LIBJXL_REQUIRED_VERSION@
+LIBLZMA_REQUIRED_VERSION = @LIBLZMA_REQUIRED_VERSION@
+LIBMYPAINT_CFLAGS = @LIBMYPAINT_CFLAGS@
+LIBMYPAINT_LIBS = @LIBMYPAINT_LIBS@
+LIBMYPAINT_REQUIRED_VERSION = @LIBMYPAINT_REQUIRED_VERSION@
+LIBOBJS = @LIBOBJS@
+LIBPNG_REQUIRED_VERSION = @LIBPNG_REQUIRED_VERSION@
+LIBS = @LIBS@
+LIBTOOL = @LIBTOOL@
+LIBUNWIND_CFLAGS = @LIBUNWIND_CFLAGS@
+LIBUNWIND_LIBS = @LIBUNWIND_LIBS@
+LIBUNWIND_REQUIRED_VERSION = @LIBUNWIND_REQUIRED_VERSION@
+LIPO = @LIPO@
+LN_S = @LN_S@
+LTLIBOBJS = @LTLIBOBJS@
+LT_CURRENT_MINUS_AGE = @LT_CURRENT_MINUS_AGE@
+LT_SYS_LIBRARY_PATH = @LT_SYS_LIBRARY_PATH@
+LT_VERSION_INFO = @LT_VERSION_INFO@
+LZMA_CFLAGS = @LZMA_CFLAGS@
+LZMA_LIBS = @LZMA_LIBS@
+MAIL = @MAIL@
+MAINT = @MAINT@
+MAKEINFO = @MAKEINFO@
+MANIFEST_TOOL = @MANIFEST_TOOL@
+MIME_INFO_CFLAGS = @MIME_INFO_CFLAGS@
+MIME_INFO_LIBS = @MIME_INFO_LIBS@
+MIME_TYPES = @MIME_TYPES@
+MKDIR_P = @MKDIR_P@
+MKINSTALLDIRS = @MKINSTALLDIRS@
+MMX_EXTRA_CFLAGS = @MMX_EXTRA_CFLAGS@
+MNG_CFLAGS = @MNG_CFLAGS@
+MNG_LIBS = @MNG_LIBS@
+MSGFMT = @MSGFMT@
+MSGFMT_OPTS = @MSGFMT_OPTS@
+MSGMERGE = @MSGMERGE@
+MYPAINT_BRUSHES_CFLAGS = @MYPAINT_BRUSHES_CFLAGS@
+MYPAINT_BRUSHES_LIBS = @MYPAINT_BRUSHES_LIBS@
+NATIVE_GLIB_CFLAGS = @NATIVE_GLIB_CFLAGS@
+NATIVE_GLIB_LIBS = @NATIVE_GLIB_LIBS@
+NM = @NM@
+NMEDIT = @NMEDIT@
+OBJDUMP = @OBJDUMP@
+OBJEXT = @OBJEXT@
+OPENEXR_CFLAGS = @OPENEXR_CFLAGS@
+OPENEXR_LIBS = @OPENEXR_LIBS@
+OPENEXR_REQUIRED_VERSION = @OPENEXR_REQUIRED_VERSION@
+OPENJPEG_CFLAGS = @OPENJPEG_CFLAGS@
+OPENJPEG_LIBS = @OPENJPEG_LIBS@
+OPENJPEG_REQUIRED_VERSION = @OPENJPEG_REQUIRED_VERSION@
+OTOOL = @OTOOL@
+OTOOL64 = @OTOOL64@
+PACKAGE = @PACKAGE@
+PACKAGE_BUGREPORT = @PACKAGE_BUGREPORT@
+PACKAGE_NAME = @PACKAGE_NAME@
+PACKAGE_STRING = @PACKAGE_STRING@
+PACKAGE_TARNAME = @PACKAGE_TARNAME@
+PACKAGE_URL = @PACKAGE_URL@
+PACKAGE_VERSION = @PACKAGE_VERSION@
+PANGOCAIRO_CFLAGS = @PANGOCAIRO_CFLAGS@
+PANGOCAIRO_LIBS = @PANGOCAIRO_LIBS@
+PANGOCAIRO_REQUIRED_VERSION = @PANGOCAIRO_REQUIRED_VERSION@
+PATHSEP = @PATHSEP@
+PATH_SEPARATOR = @PATH_SEPARATOR@
+PERL = @PERL@
+PERL_REQUIRED_VERSION = @PERL_REQUIRED_VERSION@
+PERL_VERSION = @PERL_VERSION@
+PKG_CONFIG = @PKG_CONFIG@
+PKG_CONFIG_LIBDIR = @PKG_CONFIG_LIBDIR@
+PKG_CONFIG_PATH = @PKG_CONFIG_PATH@
+PNG_CFLAGS = @PNG_CFLAGS@
+PNG_LIBS = @PNG_LIBS@
+POFILES = @POFILES@
+POPPLER_CFLAGS = @POPPLER_CFLAGS@
+POPPLER_DATA_CFLAGS = @POPPLER_DATA_CFLAGS@
+POPPLER_DATA_LIBS = @POPPLER_DATA_LIBS@
+POPPLER_DATA_REQUIRED_VERSION = @POPPLER_DATA_REQUIRED_VERSION@
+POPPLER_LIBS = @POPPLER_LIBS@
+POPPLER_REQUIRED_VERSION = @POPPLER_REQUIRED_VERSION@
+POSUB = @POSUB@
+PO_IN_DATADIR_FALSE = @PO_IN_DATADIR_FALSE@
+PO_IN_DATADIR_TRUE = @PO_IN_DATADIR_TRUE@
+PYBIN_PATH = @PYBIN_PATH@
+PYCAIRO_CFLAGS = @PYCAIRO_CFLAGS@
+PYCAIRO_LIBS = @PYCAIRO_LIBS@
+PYGIMP_EXTRA_CFLAGS = @PYGIMP_EXTRA_CFLAGS@
+PYGTK_CFLAGS = @PYGTK_CFLAGS@
+PYGTK_CODEGEN = @PYGTK_CODEGEN@
+PYGTK_DEFSDIR = @PYGTK_DEFSDIR@
+PYGTK_LIBS = @PYGTK_LIBS@
+PYLINK_LIBS = @PYLINK_LIBS@
+PYTHON = @PYTHON@
+PYTHON2_REQUIRED_VERSION = @PYTHON2_REQUIRED_VERSION@
+PYTHON_EXEC_PREFIX = @PYTHON_EXEC_PREFIX@
+PYTHON_INCLUDES = @PYTHON_INCLUDES@
+PYTHON_PLATFORM = @PYTHON_PLATFORM@
+PYTHON_PREFIX = @PYTHON_PREFIX@
+PYTHON_VERSION = @PYTHON_VERSION@
+RANLIB = @RANLIB@
+RSVG_REQUIRED_VERSION = @RSVG_REQUIRED_VERSION@
+RT_LIBS = @RT_LIBS@
+SCREENSHOT_LIBS = @SCREENSHOT_LIBS@
+SED = @SED@
+SENDMAIL = @SENDMAIL@
+SET_MAKE = @SET_MAKE@
+SHELL = @SHELL@
+SOCKET_LIBS = @SOCKET_LIBS@
+SSE2_EXTRA_CFLAGS = @SSE2_EXTRA_CFLAGS@
+SSE4_1_EXTRA_CFLAGS = @SSE4_1_EXTRA_CFLAGS@
+SSE_EXTRA_CFLAGS = @SSE_EXTRA_CFLAGS@
+STRIP = @STRIP@
+SVG_CFLAGS = @SVG_CFLAGS@
+SVG_LIBS = @SVG_LIBS@
+SYMPREFIX = @SYMPREFIX@
+TIFF_LIBS = @TIFF_LIBS@
+USE_NLS = @USE_NLS@
+VERSION = @VERSION@
+WEBKIT_CFLAGS = @WEBKIT_CFLAGS@
+WEBKIT_LIBS = @WEBKIT_LIBS@
+WEBKIT_REQUIRED_VERSION = @WEBKIT_REQUIRED_VERSION@
+WEBPDEMUX_CFLAGS = @WEBPDEMUX_CFLAGS@
+WEBPDEMUX_LIBS = @WEBPDEMUX_LIBS@
+WEBPMUX_CFLAGS = @WEBPMUX_CFLAGS@
+WEBPMUX_LIBS = @WEBPMUX_LIBS@
+WEBP_CFLAGS = @WEBP_CFLAGS@
+WEBP_LIBS = @WEBP_LIBS@
+WEBP_REQUIRED_VERSION = @WEBP_REQUIRED_VERSION@
+WEB_PAGE = @WEB_PAGE@
+WIN32_LARGE_ADDRESS_AWARE = @WIN32_LARGE_ADDRESS_AWARE@
+WINDRES = @WINDRES@
+WMF_CFLAGS = @WMF_CFLAGS@
+WMF_CONFIG = @WMF_CONFIG@
+WMF_LIBS = @WMF_LIBS@
+WMF_REQUIRED_VERSION = @WMF_REQUIRED_VERSION@
+XDG_EMAIL = @XDG_EMAIL@
+XFIXES_CFLAGS = @XFIXES_CFLAGS@
+XFIXES_LIBS = @XFIXES_LIBS@
+XGETTEXT = @XGETTEXT@
+XGETTEXT_REQUIRED_VERSION = @XGETTEXT_REQUIRED_VERSION@
+XMC_CFLAGS = @XMC_CFLAGS@
+XMC_LIBS = @XMC_LIBS@
+XMKMF = @XMKMF@
+XMLLINT = @XMLLINT@
+XMU_LIBS = @XMU_LIBS@
+XPM_LIBS = @XPM_LIBS@
+XSLTPROC = @XSLTPROC@
+XVFB_RUN = @XVFB_RUN@
+X_CFLAGS = @X_CFLAGS@
+X_EXTRA_LIBS = @X_EXTRA_LIBS@
+X_LIBS = @X_LIBS@
+X_PRE_LIBS = @X_PRE_LIBS@
+Z_LIBS = @Z_LIBS@
+abs_builddir = @abs_builddir@
+abs_srcdir = @abs_srcdir@
+abs_top_builddir = @abs_top_builddir@
+abs_top_srcdir = @abs_top_srcdir@
+ac_ct_AR = @ac_ct_AR@
+ac_ct_CC = @ac_ct_CC@
+ac_ct_CC_FOR_BUILD = @ac_ct_CC_FOR_BUILD@
+ac_ct_CXX = @ac_ct_CXX@
+ac_ct_DUMPBIN = @ac_ct_DUMPBIN@
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+am__leading_dot = @am__leading_dot@
+am__quote = @am__quote@
+am__tar = @am__tar@
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+bindir = @bindir@
+build = @build@
+build_alias = @build_alias@
+build_cpu = @build_cpu@
+build_os = @build_os@
+build_vendor = @build_vendor@
+builddir = @builddir@
+datadir = @datadir@
+datarootdir = @datarootdir@
+docdir = @docdir@
+dvidir = @dvidir@
+exec_prefix = @exec_prefix@
+gimpdatadir = @gimpdatadir@
+gimpdir = @gimpdir@
+gimplocaledir = @gimplocaledir@
+gimpplugindir = @gimpplugindir@
+gimpsysconfdir = @gimpsysconfdir@
+host = @host@
+host_alias = @host_alias@
+host_cpu = @host_cpu@
+host_os = @host_os@
+host_vendor = @host_vendor@
+htmldir = @htmldir@
+includedir = @includedir@
+infodir = @infodir@
+install_sh = @install_sh@
+intltool__v_merge_options_ = @intltool__v_merge_options_@
+intltool__v_merge_options_0 = @intltool__v_merge_options_0@
+libdir = @libdir@
+libexecdir = @libexecdir@
+localedir = @localedir@
+localstatedir = @localstatedir@
+mandir = @mandir@
+manpage_gimpdir = @manpage_gimpdir@
+mkdir_p = @mkdir_p@
+ms_librarian = @ms_librarian@
+mypaint_brushes_dir = @mypaint_brushes_dir@
+oldincludedir = @oldincludedir@
+pdfdir = @pdfdir@
+pkgpyexecdir = @pkgpyexecdir@
+pkgpythondir = @pkgpythondir@
+prefix = @prefix@
+program_transform_name = @program_transform_name@
+psdir = @psdir@
+pyexecdir = @pyexecdir@
+pythondir = @pythondir@
+runstatedir = @runstatedir@
+sbindir = @sbindir@
+sharedstatedir = @sharedstatedir@
+srcdir = @srcdir@
+sysconfdir = @sysconfdir@
+target_alias = @target_alias@
+top_build_prefix = @top_build_prefix@
+top_builddir = @top_builddir@
+top_srcdir = @top_srcdir@
+libgimpbase = $(top_builddir)/libgimpbase/libgimpbase-$(GIMP_API_VERSION).la
+@PLATFORM_WIN32_TRUE@no_undefined = -no-undefined
+@PLATFORM_OSX_TRUE@xobjective_c = "-xobjective-c"
+@PLATFORM_OSX_TRUE@xobjective_cxx = "-xobjective-c++"
+@PLATFORM_OSX_TRUE@xnone = "-xnone"
+@PLATFORM_OSX_TRUE@framework_cocoa = -framework Cocoa
+@OS_WIN32_TRUE@gimpthumb_def = gimpthumb.def
+@OS_WIN32_TRUE@libgimpthumb_export_symbols = -export-symbols $(srcdir)/gimpthumb.def
+@MS_LIB_AVAILABLE_TRUE@noinst_DATA = gimpthumb-$(GIMP_API_VERSION).lib
+libgimpthumbincludedir = $(includedir)/gimp-$(GIMP_API_VERSION)/libgimpthumb
+AM_CPPFLAGS = \
+	-DG_LOG_DOMAIN=\"LibGimpThumb\"	\
+	-DGIMP_THUMB_COMPILATION	\
+	-I$(top_srcdir)			\
+	$(GDK_PIXBUF_CFLAGS)		\
+	$(GIO_CFLAGS)			\
+	-I$(includedir)
+
+AM_CFLAGS = \
+	$(xobjective_c)
+
+AM_CXXFLAGS = \
+	$(xobjective_cxx)
+
+AM_LDFLAGS = \
+	$(xnone)
+
+EXTRA_DIST = \
+	gimpthumb.def
+
+lib_LTLIBRARIES = libgimpthumb-@GIMP_API_VERSION@.la
+libgimpthumb_@GIMP_API_VERSION@_la_SOURCES = \
+	gimpthumb.h		\
+	gimpthumb-enums.c	\
+	gimpthumb-enums.h	\
+	gimpthumb-error.c	\
+	gimpthumb-error.h	\
+	gimpthumb-types.h	\
+	gimpthumb-utils.c	\
+	gimpthumb-utils.h	\
+	gimpthumbnail.c		\
+	gimpthumbnail.h
+
+libgimpthumbinclude_HEADERS = \
+	gimpthumb.h		\
+	gimpthumb-enums.h	\
+	gimpthumb-error.h	\
+	gimpthumb-types.h	\
+	gimpthumb-utils.h	\
+	gimpthumbnail.h
+
+libgimpthumb_@GIMP_API_VERSION@_la_LDFLAGS = \
+	-version-info $(LT_VERSION_INFO)	\
+	$(no_undefined)				\
+	$(libgimpbase)				\
+	$(libgimpthumb_export_symbols)		\
+	$(framework_cocoa)			\
+	$(xnone)
+
+libgimpthumb_@GIMP_API_VERSION@_la_LIBADD = \
+	$(GDK_PIXBUF_LIBS)	\
+	$(GIO_LIBS)
+
+gimp_thumbnail_list_SOURCES = gimp-thumbnail-list.c
+gimp_thumbnail_list_LDADD = \
+	libgimpthumb-$(GIMP_API_VERSION).la \
+	$(GDK_PIXBUF_LIBS) \
+	$(GIO_LIBS)
+
+
+#
+# rules to generate built sources
+#
+# setup autogeneration dependencies
+gen_sources = xgen-tec
+CLEANFILES = $(gen_sources)
+all: all-am
+
+.SUFFIXES:
+.SUFFIXES: .c .lo .o .obj
+$(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ $(srcdir)/Makefile.am  $(am__configure_deps)
+	@for dep in $?; do \
+	  case '$(am__configure_deps)' in \
+	    *$$dep*) \
+	      ( cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh ) \
+	        && { if test -f $@; then exit 0; else break; fi; }; \
+	      exit 1;; \
+	  esac; \
+	done; \
+	echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnu libgimpthumb/Makefile'; \
+	$(am__cd) $(top_srcdir) && \
+	  $(AUTOMAKE) --gnu libgimpthumb/Makefile
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+	@case '$?' in \
+	  *config.status*) \
+	    cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
+	  *) \
+	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__maybe_remake_depfiles)'; \
+	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__maybe_remake_depfiles);; \
+	esac;
+
+$(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+
+$(top_srcdir)/configure: @MAINTAINER_MODE_TRUE@ $(am__configure_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(ACLOCAL_M4): @MAINTAINER_MODE_TRUE@ $(am__aclocal_m4_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(am__aclocal_m4_deps):
+
+clean-noinstPROGRAMS:
+	@list='$(noinst_PROGRAMS)'; test -n "$$list" || exit 0; \
+	echo " rm -f" $$list; \
+	rm -f $$list || exit $$?; \
+	test -n "$(EXEEXT)" || exit 0; \
+	list=`for p in $$list; do echo "$$p"; done | sed 's/$(EXEEXT)$$//'`; \
+	echo " rm -f" $$list; \
+	rm -f $$list
+
+install-libLTLIBRARIES: $(lib_LTLIBRARIES)
+	@$(NORMAL_INSTALL)
+	@list='$(lib_LTLIBRARIES)'; test -n "$(libdir)" || list=; \
+	list2=; for p in $$list; do \
+	  if test -f $$p; then \
+	    list2="$$list2 $$p"; \
+	  else :; fi; \
+	done; \
+	test -z "$$list2" || { \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(libdir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(libdir)" || exit 1; \
+	  echo " $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=install $(INSTALL) $(INSTALL_STRIP_FLAG) $$list2 '$(DESTDIR)$(libdir)'"; \
+	  $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=install $(INSTALL) $(INSTALL_STRIP_FLAG) $$list2 "$(DESTDIR)$(libdir)"; \
+	}
+
+uninstall-libLTLIBRARIES:
+	@$(NORMAL_UNINSTALL)
+	@list='$(lib_LTLIBRARIES)'; test -n "$(libdir)" || list=; \
+	for p in $$list; do \
+	  $(am__strip_dir) \
+	  echo " $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=uninstall rm -f '$(DESTDIR)$(libdir)/$$f'"; \
+	  $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=uninstall rm -f "$(DESTDIR)$(libdir)/$$f"; \
+	done
+
+clean-libLTLIBRARIES:
+	-test -z "$(lib_LTLIBRARIES)" || rm -f $(lib_LTLIBRARIES)
+	@list='$(lib_LTLIBRARIES)'; \
+	locs=`for p in $$list; do echo $$p; done | \
+	      sed 's|^[^/]*$$|.|; s|/[^/]*$$||; s|$$|/so_locations|' | \
+	      sort -u`; \
+	test -z "$$locs" || { \
+	  echo rm -f $${locs}; \
+	  rm -f $${locs}; \
+	}
+
+libgimpthumb-@GIMP_API_VERSION@.la: $(libgimpthumb_@GIMP_API_VERSION@_la_OBJECTS) $(libgimpthumb_@GIMP_API_VERSION@_la_DEPENDENCIES) $(EXTRA_libgimpthumb_@GIMP_API_VERSION@_la_DEPENDENCIES) 
+	$(AM_V_CCLD)$(libgimpthumb_@GIMP_API_VERSION@_la_LINK) -rpath $(libdir) $(libgimpthumb_@GIMP_API_VERSION@_la_OBJECTS) $(libgimpthumb_@GIMP_API_VERSION@_la_LIBADD) $(LIBS)
+
+gimp-thumbnail-list$(EXEEXT): $(gimp_thumbnail_list_OBJECTS) $(gimp_thumbnail_list_DEPENDENCIES) $(EXTRA_gimp_thumbnail_list_DEPENDENCIES) 
+	@rm -f gimp-thumbnail-list$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(gimp_thumbnail_list_OBJECTS) $(gimp_thumbnail_list_LDADD) $(LIBS)
+
+mostlyclean-compile:
+	-rm -f *.$(OBJEXT)
+
+distclean-compile:
+	-rm -f *.tab.c
+
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/gimp-thumbnail-list.Po@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/gimpthumb-enums.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/gimpthumb-error.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/gimpthumb-utils.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/gimpthumbnail.Plo@am__quote@ # am--include-marker
+
+$(am__depfiles_remade):
+	@$(MKDIR_P) $(@D)
+	@echo '# dummy' >$@-t && $(am__mv) $@-t $@
+
+am--depfiles: $(am__depfiles_remade)
+
+.c.o:
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(COMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ $<
+@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Po
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='$<' object='$@' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(COMPILE) -c -o $@ $<
+
+.c.obj:
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(COMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ `$(CYGPATH_W) '$<'`
+@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Po
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='$<' object='$@' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(COMPILE) -c -o $@ `$(CYGPATH_W) '$<'`
+
+.c.lo:
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(LTCOMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ $<
+@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Plo
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='$<' object='$@' libtool=yes @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(LTCOMPILE) -c -o $@ $<
+
+mostlyclean-libtool:
+	-rm -f *.lo
+
+clean-libtool:
+	-rm -rf .libs _libs
+install-libgimpthumbincludeHEADERS: $(libgimpthumbinclude_HEADERS)
+	@$(NORMAL_INSTALL)
+	@list='$(libgimpthumbinclude_HEADERS)'; test -n "$(libgimpthumbincludedir)" || list=; \
+	if test -n "$$list"; then \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(libgimpthumbincludedir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(libgimpthumbincludedir)" || exit 1; \
+	fi; \
+	for p in $$list; do \
+	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
+	  echo "$$d$$p"; \
+	done | $(am__base_list) | \
+	while read files; do \
+	  echo " $(INSTALL_HEADER) $$files '$(DESTDIR)$(libgimpthumbincludedir)'"; \
+	  $(INSTALL_HEADER) $$files "$(DESTDIR)$(libgimpthumbincludedir)" || exit $$?; \
+	done
+
+uninstall-libgimpthumbincludeHEADERS:
+	@$(NORMAL_UNINSTALL)
+	@list='$(libgimpthumbinclude_HEADERS)'; test -n "$(libgimpthumbincludedir)" || list=; \
+	files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
+	dir='$(DESTDIR)$(libgimpthumbincludedir)'; $(am__uninstall_files_from_dir)
+
+ID: $(am__tagged_files)
+	$(am__define_uniq_tagged_files); mkid -fID $$unique
+tags: tags-am
+TAGS: tags
+
+tags-am: $(TAGS_DEPENDENCIES) $(am__tagged_files)
+	set x; \
+	here=`pwd`; \
+	$(am__define_uniq_tagged_files); \
+	shift; \
+	if test -z "$(ETAGS_ARGS)$$*$$unique"; then :; else \
+	  test -n "$$unique" || unique=$$empty_fix; \
+	  if test $$# -gt 0; then \
+	    $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
+	      "$$@" $$unique; \
+	  else \
+	    $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
+	      $$unique; \
+	  fi; \
+	fi
+ctags: ctags-am
+
+CTAGS: ctags
+ctags-am: $(TAGS_DEPENDENCIES) $(am__tagged_files)
+	$(am__define_uniq_tagged_files); \
+	test -z "$(CTAGS_ARGS)$$unique" \
+	  || $(CTAGS) $(CTAGSFLAGS) $(AM_CTAGSFLAGS) $(CTAGS_ARGS) \
+	     $$unique
+
+GTAGS:
+	here=`$(am__cd) $(top_builddir) && pwd` \
+	  && $(am__cd) $(top_srcdir) \
+	  && gtags -i $(GTAGS_ARGS) "$$here"
+cscopelist: cscopelist-am
+
+cscopelist-am: $(am__tagged_files)
+	list='$(am__tagged_files)'; \
+	case "$(srcdir)" in \
+	  [\\/]* | ?:[\\/]*) sdir="$(srcdir)" ;; \
+	  *) sdir=$(subdir)/$(srcdir) ;; \
+	esac; \
+	for i in $$list; do \
+	  if test -f "$$i"; then \
+	    echo "$(subdir)/$$i"; \
+	  else \
+	    echo "$$sdir/$$i"; \
+	  fi; \
+	done >> $(top_builddir)/cscope.files
+
+distclean-tags:
+	-rm -f TAGS ID GTAGS GRTAGS GSYMS GPATH tags
+
+distdir: $(BUILT_SOURCES)
+	$(MAKE) $(AM_MAKEFLAGS) distdir-am
+
+distdir-am: $(DISTFILES)
+	@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	list='$(DISTFILES)'; \
+	  dist_files=`for file in $$list; do echo $$file; done | \
+	  sed -e "s|^$$srcdirstrip/||;t" \
+	      -e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
+	case $$dist_files in \
+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
+			   sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
+			   sort -u` ;; \
+	esac; \
+	for file in $$dist_files; do \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+	  if test -d $$d/$$file; then \
+	    dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
+	    if test -d "$(distdir)/$$file"; then \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+	  else \
+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
+check-am: all-am
+check: check-am
+all-am: Makefile $(PROGRAMS) $(LTLIBRARIES) $(DATA) $(HEADERS)
+installdirs:
+	for dir in "$(DESTDIR)$(libdir)" "$(DESTDIR)$(libgimpthumbincludedir)"; do \
+	  test -z "$$dir" || $(MKDIR_P) "$$dir"; \
+	done
+install: install-am
+install-exec: install-exec-am
+install-data: install-data-am
+uninstall: uninstall-am
+
+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-am
+install-strip:
+	if test -z '$(STRIP)'; then \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+
+clean-generic:
+	-test -z "$(CLEANFILES)" || rm -f $(CLEANFILES)
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+clean: clean-am
+
+clean-am: clean-generic clean-libLTLIBRARIES clean-libtool \
+	clean-noinstPROGRAMS mostlyclean-am
+
+distclean: distclean-am
+		-rm -f ./$(DEPDIR)/gimp-thumbnail-list.Po
+	-rm -f ./$(DEPDIR)/gimpthumb-enums.Plo
+	-rm -f ./$(DEPDIR)/gimpthumb-error.Plo
+	-rm -f ./$(DEPDIR)/gimpthumb-utils.Plo
+	-rm -f ./$(DEPDIR)/gimpthumbnail.Plo
+	-rm -f Makefile
+distclean-am: clean-am distclean-compile distclean-generic \
+	distclean-tags
+
+dvi: dvi-am
+
+dvi-am:
+
+html: html-am
+
+html-am:
+
+info: info-am
+
+info-am:
+
+install-data-am: install-data-local install-libgimpthumbincludeHEADERS
+
+install-dvi: install-dvi-am
+
+install-dvi-am:
+
+install-exec-am: install-libLTLIBRARIES
+
+install-html: install-html-am
+
+install-html-am:
+
+install-info: install-info-am
+
+install-info-am:
+
+install-man:
+
+install-pdf: install-pdf-am
+
+install-pdf-am:
+
+install-ps: install-ps-am
+
+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-am
+		-rm -f ./$(DEPDIR)/gimp-thumbnail-list.Po
+	-rm -f ./$(DEPDIR)/gimpthumb-enums.Plo
+	-rm -f ./$(DEPDIR)/gimpthumb-error.Plo
+	-rm -f ./$(DEPDIR)/gimpthumb-utils.Plo
+	-rm -f ./$(DEPDIR)/gimpthumbnail.Plo
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-compile mostlyclean-generic \
+	mostlyclean-libtool
+
+pdf: pdf-am
+
+pdf-am:
+
+ps: ps-am
+
+ps-am:
+
+uninstall-am: uninstall-libLTLIBRARIES \
+	uninstall-libgimpthumbincludeHEADERS uninstall-local
+
+.MAKE: install-am install-strip
+
+.PHONY: CTAGS GTAGS TAGS all all-am am--depfiles check check-am clean \
+	clean-generic clean-libLTLIBRARIES clean-libtool \
+	clean-noinstPROGRAMS cscopelist-am ctags ctags-am distclean \
+	distclean-compile distclean-generic distclean-libtool \
+	distclean-tags distdir dvi dvi-am html html-am info info-am \
+	install install-am install-data install-data-am \
+	install-data-local install-dvi install-dvi-am install-exec \
+	install-exec-am install-html install-html-am install-info \
+	install-info-am install-libLTLIBRARIES \
+	install-libgimpthumbincludeHEADERS install-man install-pdf \
+	install-pdf-am install-ps install-ps-am install-strip \
+	installcheck installcheck-am installdirs maintainer-clean \
+	maintainer-clean-generic mostlyclean mostlyclean-compile \
+	mostlyclean-generic mostlyclean-libtool pdf pdf-am ps ps-am \
+	tags tags-am uninstall uninstall-am uninstall-libLTLIBRARIES \
+	uninstall-libgimpthumbincludeHEADERS uninstall-local
+
+.PRECIOUS: Makefile
+
+
+@OS_WIN32_TRUE@install-libtool-import-lib:
+@OS_WIN32_TRUE@	$(INSTALL) .libs/libgimpthumb-$(GIMP_API_VERSION).dll.a $(DESTDIR)$(libdir)
+@OS_WIN32_TRUE@	$(INSTALL) $(srcdir)/gimpthumb.def $(DESTDIR)$(libdir)
+
+@OS_WIN32_TRUE@uninstall-libtool-import-lib:
+@OS_WIN32_TRUE@	-rm $(DESTDIR)$(libdir)/libgimpthumb-$(GIMP_API_VERSION).dll.a
+@OS_WIN32_TRUE@	-rm $(DESTDIR)$(libdir)/gimpthumb.def
+@OS_WIN32_FALSE@install-libtool-import-lib:
+@OS_WIN32_FALSE@uninstall-libtool-import-lib:
+
+@MS_LIB_AVAILABLE_TRUE@install-ms-lib:
+@MS_LIB_AVAILABLE_TRUE@	$(INSTALL) gimpthumb-$(GIMP_API_VERSION).lib $(DESTDIR)$(libdir)
+
+@MS_LIB_AVAILABLE_TRUE@uninstall-ms-lib:
+@MS_LIB_AVAILABLE_TRUE@	-rm $(DESTDIR)$(libdir)/gimpthumb-$(GIMP_API_VERSION).lib
+
+@MS_LIB_AVAILABLE_TRUE@gimpthumb-@GIMP_API_VERSION@.lib: gimpthumb.def
+@MS_LIB_AVAILABLE_TRUE@	lib -name:libgimpthumb-$(GIMP_API_VERSION)-@LT_CURRENT_MINUS_AGE@.dll -def:gimpthumb.def -out:$@
+
+@MS_LIB_AVAILABLE_FALSE@install-ms-lib:
+@MS_LIB_AVAILABLE_FALSE@uninstall-ms-lib:
+
+install-data-local: install-ms-lib install-libtool-import-lib
+
+uninstall-local: uninstall-ms-lib uninstall-libtool-import-lib
+
+gimpthumb-enums.c: $(srcdir)/gimpthumb-enums.h $(GIMP_MKENUMS) Makefile.am
+	$(AM_V_GEN) $(GIMP_MKENUMS) \
+		--fhead "#include \"config.h\"\n#include <glib-object.h>\n#include \"gimpthumb-enums.h\"" \
+		--fprod "\n/* enumerations from \"@filename@\" */" \
+		--vhead "GType\n@enum_name@_get_type (void)\n{\n  static const G@Type@Value values[] =\n  {" \
+		--vprod "    { @VALUENAME@, @valuedesc@, \"@valuenick@\" }," \
+		--vtail "    { 0, NULL, NULL }\n  };\n\n  static GType type = 0;\n\n  if (G_UNLIKELY (! type))\n    type = g_@type@_register_static (\"@EnumName@\", values);\n\n  return type;\n}\n" \
+		$< > xgen-tec \
+	&& cp xgen-tec $(@F) \
+	&& rm -f xgen-tec
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/libgimpthumb/gimp-thumbnail-list.c b/libgimpthumb/gimp-thumbnail-list.c
new file mode 100644
index 0000000..2086af2
--- /dev/null
+++ b/libgimpthumb/gimp-thumbnail-list.c
@@ -0,0 +1,251 @@
+/*
+ * gimp-thumbnail-list.c
+ */
+
+#include <string.h>
+#include <gdk-pixbuf/gdk-pixbuf.h>
+#include <libgimpthumb/gimpthumb.h>
+
+
+#define STATE_NONE  -1
+#define STATE_ERROR -2
+
+
+static gboolean  parse_option_state (const gchar  *option_name,
+                                     const gchar  *value,
+                                     gpointer      data,
+                                     GError      **error);
+static gboolean  parse_option_path  (const gchar  *option_name,
+                                     const gchar  *value,
+                                     gpointer      data,
+                                     GError      **error);
+static void      process_folder     (const gchar  *folder);
+static void      process_thumbnail  (const gchar  *filename);
+
+
+static GimpThumbState  option_state   = STATE_NONE;
+static gboolean        option_verbose = FALSE;
+static gchar          *option_path    = NULL;
+
+
+static const GOptionEntry main_entries[] =
+{
+  {
+    "state", 's', 0,
+    G_OPTION_ARG_CALLBACK, parse_option_state,
+    "Filter by thumbnail state "
+    "(unknown|remote|folder|special|not-found|exists|old|failed|ok|error)",
+    "<state>"
+  },
+  {
+    "path", 'p', 0,
+    G_OPTION_ARG_CALLBACK, parse_option_path,
+    "Filter by original file's path",
+    "<path>"
+  },
+  {
+    "verbose", 'v', 0,
+    G_OPTION_ARG_NONE, &option_verbose,
+    "Print additional info per matched file", NULL
+  },
+  { NULL }
+};
+
+
+gint
+main (gint   argc,
+      gchar *argv[])
+{
+  GOptionContext *context;
+  GDir           *dir;
+  const gchar    *thumb_folder;
+  const gchar    *folder;
+  GError         *error = NULL;
+
+  gimp_thumb_init ("gimp-thumbnail-list", NULL);
+
+  thumb_folder = gimp_thumb_get_thumb_base_dir ();
+
+  context = g_option_context_new (NULL);
+  g_option_context_add_main_entries (context, main_entries, NULL);
+
+  if (! g_option_context_parse (context, &argc, &argv, &error))
+    {
+      g_printerr ("%s\n", error->message);
+      return -1;
+    }
+
+  dir = g_dir_open (thumb_folder, 0, &error);
+
+  if (! dir)
+    g_error ("Error opening %s: %s", thumb_folder, error->message);
+
+  while ((folder = g_dir_read_name (dir)))
+    {
+      gchar *filename;
+
+      filename = g_build_filename (thumb_folder, folder, NULL);
+
+      if (g_file_test (filename, G_FILE_TEST_IS_DIR))
+        process_folder (filename);
+
+      g_free (filename);
+    }
+
+  g_dir_close (dir);
+
+  return 0;
+}
+
+static gboolean
+parse_option_state (const gchar  *option_name,
+                    const gchar  *value,
+                    gpointer      data,
+                    GError      **error)
+{
+  if (strcmp (value, "unknown") == 0)
+    option_state = GIMP_THUMB_STATE_UNKNOWN;
+  else if (strcmp (value, "remote") == 0)
+    option_state = GIMP_THUMB_STATE_REMOTE;
+  else if (strcmp (value, "folder") == 0)
+    option_state = GIMP_THUMB_STATE_FOLDER;
+  else if (strcmp (value, "special") == 0)
+    option_state = GIMP_THUMB_STATE_SPECIAL;
+  else if (strcmp (value, "not-found") == 0)
+    option_state = GIMP_THUMB_STATE_NOT_FOUND;
+  else if (strcmp (value, "exists") == 0)
+    option_state = GIMP_THUMB_STATE_EXISTS;
+  else if (strcmp (value, "old") == 0)
+    option_state = GIMP_THUMB_STATE_OLD;
+  else if (strcmp (value, "failed") == 0)
+    option_state = GIMP_THUMB_STATE_FAILED;
+  else if (strcmp (value, "ok") == 0)
+    option_state = GIMP_THUMB_STATE_OK;
+  else if (strcmp (value, "error") == 0)
+    option_state = STATE_ERROR;
+  else
+    return FALSE;
+
+  return TRUE;
+}
+
+static gboolean
+parse_option_path (const gchar  *option_name,
+                   const gchar  *value,
+                   gpointer      data,
+                   GError      **error)
+{
+  option_path = g_strdup (value);
+
+  return TRUE;
+}
+
+static void
+process_folder (const gchar *folder)
+{
+  GDir        *dir;
+  const gchar *name;
+  GError      *error = NULL;
+
+#if 0
+  g_print ("processing folder: %s\n", folder);
+#endif
+
+  dir = g_dir_open (folder, 0, &error);
+
+  if (! dir)
+    {
+      g_printerr ("Error opening '%s': %s", folder, error->message);
+      return;
+    }
+
+  while ((name = g_dir_read_name (dir)))
+    {
+      gchar *filename;
+
+      filename = g_build_filename (folder, name, NULL);
+
+      if (g_file_test (filename, G_FILE_TEST_IS_DIR))
+        process_folder (filename);
+      else
+        process_thumbnail (filename);
+
+      g_free (filename);
+    }
+
+  g_dir_close (dir);
+}
+
+static void
+process_thumbnail (const gchar *filename)
+{
+  GimpThumbnail *thumbnail;
+  GError        *error = NULL;
+
+  thumbnail = gimp_thumbnail_new ();
+
+  if (! gimp_thumbnail_set_from_thumb (thumbnail, filename, &error))
+    {
+      if (option_state == STATE_ERROR)
+        {
+          if (option_verbose)
+            g_print ("%s '%s'\n", filename, error->message);
+          else
+            g_print ("%s\n", filename);
+        }
+
+      g_clear_error (&error);
+    }
+  else
+    {
+      GimpThumbState state = gimp_thumbnail_peek_image (thumbnail);
+
+      if ((option_state == STATE_NONE || state == option_state)
+
+          &&
+
+          (option_path == NULL ||
+           strstr (thumbnail->image_uri, option_path)))
+        {
+          if (option_verbose)
+            g_print ("%s '%s'\n", filename, thumbnail->image_uri);
+          else
+            g_print ("%s\n", filename);
+        }
+
+#if 0
+      switch (foo)
+        {
+        case GIMP_THUMB_STATE_REMOTE:
+          g_print ("%s Remote image '%s'\n", filename, thumbnail->image_uri);
+          break;
+
+        case GIMP_THUMB_STATE_FOLDER:
+          g_print ("%s Folder '%s'\n", filename, thumbnail->image_uri);
+          break;
+
+        case GIMP_THUMB_STATE_SPECIAL:
+          g_print ("%s Special file '%s'\n", filename, thumbnail->image_uri);
+          break;
+
+        case GIMP_THUMB_STATE_NOT_FOUND:
+          g_print ("%s Image not found '%s'\n", filename, thumbnail->image_uri);
+          break;
+
+        case GIMP_THUMB_STATE_OLD:
+          g_print ("%s Thumbnail old '%s'\n", filename, thumbnail->image_uri);
+          break;
+
+        case GIMP_THUMB_STATE_FAILED:
+          g_print ("%s EEEEEEEEK '%s'\n", filename, thumbnail->image_uri);
+          break;
+
+        default:
+          g_print ("%s '%s'\n", filename, thumbnail->image_uri);
+          break;
+        }
+#endif
+    }
+
+  g_object_unref (thumbnail);
+}
diff --git a/libgimpthumb/gimpthumb-enums.c b/libgimpthumb/gimpthumb-enums.c
new file mode 100644
index 0000000..b7924e8
--- /dev/null
+++ b/libgimpthumb/gimpthumb-enums.c
@@ -0,0 +1,75 @@
+
+/* Generated data (by gimp-mkenums) */
+
+#include "config.h"
+#include <glib-object.h>
+#include "gimpthumb-enums.h"
+
+/* enumerations from "../../libgimpthumb/gimpthumb-enums.h" */
+GType
+gimp_thumb_file_type_get_type (void)
+{
+  static const GEnumValue values[] =
+  {
+    { GIMP_THUMB_FILE_TYPE_NONE, "GIMP_THUMB_FILE_TYPE_NONE", "none" },
+    { GIMP_THUMB_FILE_TYPE_REGULAR, "GIMP_THUMB_FILE_TYPE_REGULAR", "regular" },
+    { GIMP_THUMB_FILE_TYPE_FOLDER, "GIMP_THUMB_FILE_TYPE_FOLDER", "folder" },
+    { GIMP_THUMB_FILE_TYPE_SPECIAL, "GIMP_THUMB_FILE_TYPE_SPECIAL", "special" },
+    { 0, NULL, NULL }
+  };
+
+  static GType type = 0;
+
+  if (G_UNLIKELY (! type))
+    type = g_enum_register_static ("GimpThumbFileType", values);
+
+  return type;
+}
+
+GType
+gimp_thumb_size_get_type (void)
+{
+  static const GEnumValue values[] =
+  {
+    { GIMP_THUMB_SIZE_FAIL, "GIMP_THUMB_SIZE_FAIL", "fail" },
+    { GIMP_THUMB_SIZE_NORMAL, "GIMP_THUMB_SIZE_NORMAL", "normal" },
+    { GIMP_THUMB_SIZE_LARGE, "GIMP_THUMB_SIZE_LARGE", "large" },
+    { 0, NULL, NULL }
+  };
+
+  static GType type = 0;
+
+  if (G_UNLIKELY (! type))
+    type = g_enum_register_static ("GimpThumbSize", values);
+
+  return type;
+}
+
+GType
+gimp_thumb_state_get_type (void)
+{
+  static const GEnumValue values[] =
+  {
+    { GIMP_THUMB_STATE_UNKNOWN, "GIMP_THUMB_STATE_UNKNOWN", "unknown" },
+    { GIMP_THUMB_STATE_REMOTE, "GIMP_THUMB_STATE_REMOTE", "remote" },
+    { GIMP_THUMB_STATE_FOLDER, "GIMP_THUMB_STATE_FOLDER", "folder" },
+    { GIMP_THUMB_STATE_SPECIAL, "GIMP_THUMB_STATE_SPECIAL", "special" },
+    { GIMP_THUMB_STATE_NOT_FOUND, "GIMP_THUMB_STATE_NOT_FOUND", "not-found" },
+    { GIMP_THUMB_STATE_EXISTS, "GIMP_THUMB_STATE_EXISTS", "exists" },
+    { GIMP_THUMB_STATE_OLD, "GIMP_THUMB_STATE_OLD", "old" },
+    { GIMP_THUMB_STATE_FAILED, "GIMP_THUMB_STATE_FAILED", "failed" },
+    { GIMP_THUMB_STATE_OK, "GIMP_THUMB_STATE_OK", "ok" },
+    { 0, NULL, NULL }
+  };
+
+  static GType type = 0;
+
+  if (G_UNLIKELY (! type))
+    type = g_enum_register_static ("GimpThumbState", values);
+
+  return type;
+}
+
+
+/* Generated data ends here */
+
diff --git a/libgimpthumb/gimpthumb-enums.h b/libgimpthumb/gimpthumb-enums.h
new file mode 100644
index 0000000..8414673
--- /dev/null
+++ b/libgimpthumb/gimpthumb-enums.h
@@ -0,0 +1,118 @@
+/* LIBGIMP - The GIMP Library
+ * Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
+ *
+ * Thumbnail handling according to the Thumbnail Managing Standard.
+ * https://specifications.freedesktop.org/thumbnail-spec/
+ *
+ * Copyright (C) 2001-2003  Sven Neumann <sven@gimp.org>
+ *                          Michael Natterer <mitch@gimp.org>
+ *
+ * This library is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library.  If not, see
+ * <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef __GIMP_THUMB_ENUMS_H__
+#define __GIMP_THUMB_ENUMS_H__
+
+G_BEGIN_DECLS
+
+
+/**
+ * SECTION: gimpthumb-enums
+ * @title: GimpThumb-enums
+ * @short_description: Enumerations used by libgimpthumb
+ *
+ * Enumerations used by libgimpthumb
+ **/
+
+
+/**
+ * GimpThumbFileType:
+ * @GIMP_THUMB_FILE_TYPE_NONE:    file does not exist
+ * @GIMP_THUMB_FILE_TYPE_REGULAR: a regular file
+ * @GIMP_THUMB_FILE_TYPE_FOLDER:  a directory
+ * @GIMP_THUMB_FILE_TYPE_SPECIAL: a special file (device node, fifo, socket, ...)
+ *
+ * File types as returned by gimp_thumb_file_test().
+ **/
+#define GIMP_TYPE_THUMB_FILE_TYPE (gimp_thumb_file_type_get_type ())
+
+GType gimp_thumb_file_type_get_type (void) G_GNUC_CONST;
+
+typedef enum
+{
+  GIMP_THUMB_FILE_TYPE_NONE,
+  GIMP_THUMB_FILE_TYPE_REGULAR,
+  GIMP_THUMB_FILE_TYPE_FOLDER,
+  GIMP_THUMB_FILE_TYPE_SPECIAL
+} GimpThumbFileType;
+
+
+/**
+ * GimpThumbSize:
+ * @GIMP_THUMB_SIZE_FAIL:   special size used to indicate a thumbnail
+ *                          creation failure
+ * @GIMP_THUMB_SIZE_NORMAL: normal thumbnail size (128 pixels)
+ * @GIMP_THUMB_SIZE_LARGE:  large thumbnail size (256 pixels)
+ *
+ * Possible thumbnail sizes as defined by the Thumbnail Managing
+ * Standard.
+ **/
+#define GIMP_TYPE_THUMB_SIZE (gimp_thumb_size_get_type ())
+
+GType gimp_thumb_size_get_type (void) G_GNUC_CONST;
+
+typedef enum
+{
+  GIMP_THUMB_SIZE_FAIL   = 0,
+  GIMP_THUMB_SIZE_NORMAL = 128,
+  GIMP_THUMB_SIZE_LARGE  = 256
+} GimpThumbSize;
+
+
+/**
+ * GimpThumbState:
+ * @GIMP_THUMB_STATE_UNKNOWN:   nothing is known about the file/thumbnail
+ * @GIMP_THUMB_STATE_REMOTE:    the file is on a remote file system
+ * @GIMP_THUMB_STATE_FOLDER:    the file is a directory
+ * @GIMP_THUMB_STATE_SPECIAL:   the file is a special file
+ * @GIMP_THUMB_STATE_NOT_FOUND: the file/thumbnail doesn't exist
+ * @GIMP_THUMB_STATE_EXISTS:    the file/thumbnail exists
+ * @GIMP_THUMB_STATE_OLD:       the thumbnail may be outdated
+ * @GIMP_THUMB_STATE_FAILED:    the thumbnail couldn't be created
+ * @GIMP_THUMB_STATE_OK:        the thumbnail exists and matches the image
+ *
+ * Possible image and thumbnail file states used by libgimpthumb.
+ **/
+#define GIMP_TYPE_THUMB_STATE (gimp_thumb_state_get_type ())
+
+GType gimp_thumb_state_get_type (void) G_GNUC_CONST;
+
+typedef enum
+{
+  GIMP_THUMB_STATE_UNKNOWN,
+  GIMP_THUMB_STATE_REMOTE,
+  GIMP_THUMB_STATE_FOLDER,
+  GIMP_THUMB_STATE_SPECIAL,
+  GIMP_THUMB_STATE_NOT_FOUND,
+  GIMP_THUMB_STATE_EXISTS,
+  GIMP_THUMB_STATE_OLD,
+  GIMP_THUMB_STATE_FAILED,
+  GIMP_THUMB_STATE_OK
+} GimpThumbState;
+
+
+G_END_DECLS
+
+#endif  /* __GIMP_THUMB_ENUMS_H__ */
diff --git a/libgimpthumb/gimpthumb-error.c b/libgimpthumb/gimpthumb-error.c
new file mode 100644
index 0000000..f4ab620
--- /dev/null
+++ b/libgimpthumb/gimpthumb-error.c
@@ -0,0 +1,52 @@
+/* LIBGIMP - The GIMP Library
+ * Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
+ *
+ * Thumbnail handling according to the Thumbnail Managing Standard.
+ * https://specifications.freedesktop.org/thumbnail-spec/
+ *
+ * Copyright (C) 2001-2003  Sven Neumann <sven@gimp.org>
+ *                          Michael Natterer <mitch@gimp.org>
+ *
+ * This library is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library.  If not, see
+ * <https://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <glib.h>
+
+#include "gimpthumb-error.h"
+
+
+/**
+ * SECTION: gimpthumb-error
+ * @title: GimpThumb-error
+ * @short_description: Error codes used by libgimpthumb
+ *
+ * Error codes used by libgimpthumb
+ **/
+
+
+/**
+ * gimp_thumb_error_quark:
+ *
+ * This function is never called directly. Use GIMP_THUMB_ERROR() instead.
+ *
+ * Return value: the #GQuark that defines the GimpThumb error domain.
+ **/
+GQuark
+gimp_thumb_error_quark (void)
+{
+  return g_quark_from_static_string ("gimp-thumb-error-quark");
+}
diff --git a/libgimpthumb/gimpthumb-error.h b/libgimpthumb/gimpthumb-error.h
new file mode 100644
index 0000000..9dec6e8
--- /dev/null
+++ b/libgimpthumb/gimpthumb-error.h
@@ -0,0 +1,64 @@
+/* LIBGIMP - The GIMP Library
+ * Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
+ *
+ * Thumbnail handling according to the Thumbnail Managing Standard.
+ * https://specifications.freedesktop.org/thumbnail-spec/
+ *
+ * Copyright (C) 2001-2003  Sven Neumann <sven@gimp.org>
+ *                          Michael Natterer <mitch@gimp.org>
+ *
+ * This library is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library.  If not, see
+ * <https://www.gnu.org/licenses/>.
+ */
+
+#if !defined (__GIMP_THUMB_H_INSIDE__) && !defined (GIMP_THUMB_COMPILATION)
+#error "Only <libgimpthumb/gimpthumb.h> can be included directly."
+#endif
+
+#ifndef __GIMP_THUMB_ERROR_H__
+#define __GIMP_THUMB_ERROR_H__
+
+G_BEGIN_DECLS
+
+
+/**
+ * GimpThumbError:
+ * @GIMP_THUMB_ERROR_OPEN:         there was a problem opening the file
+ * @GIMP_THUMB_ERROR_OPEN_ENOENT:  the file doesn't exist
+ * @GIMP_THUMB_ERROR_MKDIR:        there was a problem creating a directory
+ *
+ * These are the possible error codes used when a #GError is set by
+ * libgimpthumb.
+ **/
+typedef enum
+{
+  GIMP_THUMB_ERROR_OPEN,
+  GIMP_THUMB_ERROR_OPEN_ENOENT,
+  GIMP_THUMB_ERROR_MKDIR
+} GimpThumbError;
+
+
+/**
+ * GIMP_THUMB_ERROR:
+ *
+ * Identifier for the libgimpthumb error domain.
+ **/
+#define GIMP_THUMB_ERROR (gimp_thumb_error_quark ())
+
+GQuark  gimp_thumb_error_quark (void) G_GNUC_CONST;
+
+
+G_END_DECLS
+
+#endif  /* __GIMP_THUMB_ERROR_H__ */
diff --git a/libgimpthumb/gimpthumb-types.h b/libgimpthumb/gimpthumb-types.h
new file mode 100644
index 0000000..29aa4e3
--- /dev/null
+++ b/libgimpthumb/gimpthumb-types.h
@@ -0,0 +1,38 @@
+/* LIBGIMP - The GIMP Library
+ * Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
+ *
+ * Thumbnail handling according to the Thumbnail Managing Standard.
+ * https://specifications.freedesktop.org/thumbnail-spec/
+ *
+ * Copyright (C) 2001-2003  Sven Neumann <sven@gimp.org>
+ *                          Michael Natterer <mitch@gimp.org>
+ *
+ * This library is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library.  If not, see
+ * <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef __GIMP_THUMB_TYPES_H__
+#define __GIMP_THUMB_TYPES_H__
+
+
+#include <libgimpthumb/gimpthumb-enums.h>
+
+G_BEGIN_DECLS
+
+typedef struct _GimpThumbnail GimpThumbnail;
+
+G_END_DECLS
+
+
+#endif /* __GIMP_THUMB_TYPES_H__ */
diff --git a/libgimpthumb/gimpthumb-utils.c b/libgimpthumb/gimpthumb-utils.c
new file mode 100644
index 0000000..59dd830
--- /dev/null
+++ b/libgimpthumb/gimpthumb-utils.c
@@ -0,0 +1,870 @@
+/* LIBGIMP - The GIMP Library
+ * Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
+ *
+ * Thumbnail handling according to the Thumbnail Managing Standard.
+ * https://specifications.freedesktop.org/thumbnail-spec/
+ *
+ * Copyright (C) 2001-2003  Sven Neumann <sven@gimp.org>
+ *                          Michael Natterer <mitch@gimp.org>
+ *
+ * This library is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library.  If not, see
+ * <https://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <errno.h>
+#include <string.h>
+#include <sys/types.h>
+
+#ifdef PLATFORM_OSX
+#include <AppKit/AppKit.h>
+#endif
+
+#include <gio/gio.h>
+#include <glib/gstdio.h>
+
+#ifdef G_OS_WIN32
+#include "libgimpbase/gimpwin32-io.h"
+#endif
+
+#include "gimpthumb-error.h"
+#include "gimpthumb-types.h"
+#include "gimpthumb-utils.h"
+
+#include "libgimp/libgimp-intl.h"
+
+
+/**
+ * SECTION: gimpthumb-utils
+ * @title: GimpThumb-utils
+ * @short_description: Utility functions provided and used by libgimpthumb
+ *
+ * Utility functions provided and used by libgimpthumb
+ **/
+
+
+static gint           gimp_thumb_size       (GimpThumbSize  size);
+static gchar        * gimp_thumb_png_lookup (const gchar   *name,
+                                             const gchar   *basedir,
+                                             GimpThumbSize *size) G_GNUC_MALLOC;
+static const gchar  * gimp_thumb_png_name   (const gchar   *uri);
+static void           gimp_thumb_exit       (void);
+
+
+
+static gboolean      gimp_thumb_initialized = FALSE;
+static gint          thumb_num_sizes        = 0;
+static gint         *thumb_sizes            = NULL;
+static const gchar **thumb_sizenames        = NULL;
+static gchar        *thumb_dir              = NULL;
+static gchar       **thumb_subdirs          = NULL;
+static gchar        *thumb_fail_subdir      = NULL;
+
+
+/**
+ * gimp_thumb_init:
+ * @creator: an ASCII string that identifies the thumbnail creator
+ * @thumb_basedir: an absolute path or %NULL to use the default
+ *
+ * This function initializes the thumbnail system. It must be called
+ * before any other functions from libgimpthumb are used. You may call
+ * it more than once if you want to change the @thumb_basedir but if
+ * you do that, you should make sure that no thread is still using the
+ * library. Apart from this function, libgimpthumb is multi-thread
+ * safe.
+ *
+ * The @creator string must be 7bit ASCII and should contain the name
+ * of the software that creates the thumbnails. It is used to handle
+ * thumbnail creation failures. See the spec for more details.
+ *
+ * Usually you will pass %NULL for @thumb_basedir. Thumbnails will
+ * then be stored in the user's personal thumbnail directory as
+ * defined in the spec. If you wish to use libgimpthumb to store
+ * application-specific thumbnails, you can specify a different base
+ * directory here.
+ *
+ * Return value: %TRUE if the library was successfully initialized.
+ **/
+gboolean
+gimp_thumb_init (const gchar *creator,
+                 const gchar *thumb_basedir)
+{
+  GEnumClass *enum_class;
+  GEnumValue *enum_value;
+  gint        i;
+
+  g_return_val_if_fail (creator != NULL, FALSE);
+  g_return_val_if_fail (thumb_basedir == NULL ||
+                        g_path_is_absolute (thumb_basedir), FALSE);
+
+  if (gimp_thumb_initialized)
+    gimp_thumb_exit ();
+
+  if (thumb_basedir)
+    {
+      thumb_dir = g_strdup (thumb_basedir);
+    }
+  else
+    {
+#ifdef PLATFORM_OSX
+
+      NSAutoreleasePool *pool;
+      NSArray           *path;
+      NSString          *cache_dir;
+
+      pool = [[NSAutoreleasePool alloc] init];
+
+      path = NSSearchPathForDirectoriesInDomains (NSCachesDirectory,
+                                                  NSUserDomainMask, YES);
+      cache_dir = [path objectAtIndex:0];
+
+      thumb_dir = g_build_filename ([cache_dir UTF8String], "org.freedesktop.thumbnails",
+                                    NULL);
+
+      [pool drain];
+
+#else
+
+      const gchar *cache_dir = g_get_user_cache_dir ();
+
+      if (cache_dir && g_file_test (cache_dir, G_FILE_TEST_IS_DIR))
+        {
+          thumb_dir = g_build_filename (cache_dir, "thumbnails", NULL);
+        }
+
+#endif
+
+      if (! thumb_dir)
+        {
+          gchar *name = g_filename_display_name (g_get_tmp_dir ());
+
+          g_message (_("Cannot determine a valid thumbnails directory.\n"
+                       "Thumbnails will be stored in the folder for "
+                       "temporary files (%s) instead."), name);
+          g_free (name);
+
+          thumb_dir = g_build_filename (g_get_tmp_dir (), ".thumbnails", NULL);
+        }
+    }
+
+  enum_class = g_type_class_ref (GIMP_TYPE_THUMB_SIZE);
+
+  thumb_num_sizes = enum_class->n_values;
+  thumb_sizes     = g_new (gint, thumb_num_sizes);
+  thumb_sizenames = g_new (const gchar *, thumb_num_sizes);
+  thumb_subdirs   = g_new (gchar *, thumb_num_sizes);
+
+  for (i = 0, enum_value = enum_class->values;
+       i < enum_class->n_values;
+       i++, enum_value++)
+    {
+      thumb_sizes[i]     = enum_value->value;
+      thumb_sizenames[i] = enum_value->value_nick;
+      thumb_subdirs[i]   = g_build_filename (thumb_dir,
+                                             enum_value->value_nick, NULL);
+    }
+
+  thumb_fail_subdir = thumb_subdirs[0];
+  thumb_subdirs[0]  = g_build_filename (thumb_fail_subdir, creator, NULL);
+
+  g_type_class_unref (enum_class);
+
+  gimp_thumb_initialized = TRUE;
+
+  return gimp_thumb_initialized;
+}
+
+/**
+ * gimp_thumb_get_thumb_base_dir:
+ *
+ * Returns the base directory of thumbnails cache.
+ * It uses the Freedesktop Thumbnail Managing Standard on UNIX,
+ * "~/Library/Caches/org.freedesktop.thumbnails" on OSX, and a cache
+ * folder determined by glib on Windows (currently the common repository
+ * for temporary Internet files).
+ * The returned string belongs to GIMP and must not be changed nor freed.
+ *
+ * Returns: the thumbnails cache directory.
+ *
+ * Since: 2.10
+ **/
+const gchar *
+gimp_thumb_get_thumb_base_dir (void)
+{
+  g_return_val_if_fail (gimp_thumb_initialized, NULL);
+
+  return thumb_dir;
+}
+
+/**
+ * gimp_thumb_get_thumb_dir:
+ * @size: a GimpThumbSize
+ *
+ * Retrieve the name of the thumbnail folder for a specific size. The
+ * returned pointer will become invalid if gimp_thumb_init() is used
+ * again. It must not be changed or freed.
+ *
+ * Return value: the thumbnail directory in the encoding of the filesystem
+ **/
+const gchar *
+gimp_thumb_get_thumb_dir (GimpThumbSize  size)
+{
+  g_return_val_if_fail (gimp_thumb_initialized, NULL);
+
+  size = gimp_thumb_size (size);
+
+  return thumb_subdirs[size];
+}
+
+/**
+ * gimp_thumb_get_thumb_dir_local:
+ * @dirname: the basename of the dir, without the actual dirname itself
+ * @size:    a GimpThumbSize
+ *
+ * Retrieve the name of the local thumbnail folder for a specific
+ * size.  Unlike gimp_thumb_get_thumb_dir() the returned string is not
+ * constant and should be free'd when it is not any longer needed.
+ *
+ * Return value: the thumbnail directory in the encoding of the filesystem
+ *
+ * Since: 2.2
+ **/
+gchar *
+gimp_thumb_get_thumb_dir_local (const gchar   *dirname,
+                                GimpThumbSize  size)
+{
+  g_return_val_if_fail (gimp_thumb_initialized, NULL);
+  g_return_val_if_fail (dirname != NULL, NULL);
+  g_return_val_if_fail (size > GIMP_THUMB_SIZE_FAIL, NULL);
+
+  size = gimp_thumb_size (size);
+
+  return g_build_filename (dirname, thumb_sizenames[size], NULL);
+}
+
+/**
+ * gimp_thumb_ensure_thumb_dir:
+ * @size: a GimpThumbSize
+ * @error: return location for possible errors
+ *
+ * This function checks if the directory that is required to store
+ * thumbnails for a particular @size exist and attempts to create it
+ * if necessary.
+ *
+ * You shouldn't have to call this function directly since
+ * gimp_thumbnail_save_thumb() and gimp_thumbnail_save_failure() will
+ * do this for you.
+ *
+ * Return value: %TRUE is the directory exists, %FALSE if it could not
+ *               be created
+ **/
+gboolean
+gimp_thumb_ensure_thumb_dir (GimpThumbSize   size,
+                             GError        **error)
+{
+  g_return_val_if_fail (gimp_thumb_initialized, FALSE);
+  g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
+
+  size = gimp_thumb_size (size);
+
+  if (g_file_test (thumb_subdirs[size], G_FILE_TEST_IS_DIR))
+    return TRUE;
+
+  if (g_file_test (thumb_dir, G_FILE_TEST_IS_DIR) ||
+      (g_mkdir_with_parents (thumb_dir, S_IRUSR | S_IWUSR | S_IXUSR) == 0))
+    {
+      if (size == 0)
+        g_mkdir_with_parents (thumb_fail_subdir, S_IRUSR | S_IWUSR | S_IXUSR);
+
+      g_mkdir_with_parents (thumb_subdirs[size], S_IRUSR | S_IWUSR | S_IXUSR);
+    }
+
+  if (g_file_test (thumb_subdirs[size], G_FILE_TEST_IS_DIR))
+    return TRUE;
+
+  g_set_error (error,
+               GIMP_THUMB_ERROR, GIMP_THUMB_ERROR_MKDIR,
+               _("Failed to create thumbnail folder '%s'."),
+               thumb_subdirs[size]);
+
+  return FALSE;
+}
+
+/**
+ * gimp_thumb_ensure_thumb_dir_local:
+ * @dirname: the basename of the dir, without the actual dirname itself
+ * @size:    a GimpThumbSize
+ * @error:   return location for possible errors
+ *
+ * This function checks if the directory that is required to store
+ * local thumbnails for a particular @size exist and attempts to
+ * create it if necessary.
+ *
+ * You shouldn't have to call this function directly since
+ * gimp_thumbnail_save_thumb_local() will do this for you.
+ *
+ * Return value: %TRUE is the directory exists, %FALSE if it could not
+ *               be created
+ *
+ * Since: 2.2
+ **/
+gboolean
+gimp_thumb_ensure_thumb_dir_local (const gchar    *dirname,
+                                   GimpThumbSize   size,
+                                   GError        **error)
+{
+  gchar *basedir;
+  gchar *subdir;
+
+  g_return_val_if_fail (gimp_thumb_initialized, FALSE);
+  g_return_val_if_fail (dirname != NULL, FALSE);
+  g_return_val_if_fail (g_path_is_absolute (dirname), FALSE);
+  g_return_val_if_fail (size > GIMP_THUMB_SIZE_FAIL, FALSE);
+  g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
+
+  size = gimp_thumb_size (size);
+
+  subdir = g_build_filename (dirname,
+                             ".thumblocal", thumb_sizenames[size],
+                             NULL);
+
+  if (g_file_test (subdir, G_FILE_TEST_IS_DIR))
+    {
+      g_free (subdir);
+      return TRUE;
+    }
+
+  basedir = g_build_filename (dirname, ".thumblocal", NULL);
+
+  if (g_file_test (basedir, G_FILE_TEST_IS_DIR) ||
+      (g_mkdir (thumb_dir, S_IRUSR | S_IWUSR | S_IXUSR) == 0))
+    {
+      g_mkdir (subdir, S_IRUSR | S_IWUSR | S_IXUSR);
+    }
+
+  g_free (basedir);
+
+  if (g_file_test (subdir, G_FILE_TEST_IS_DIR))
+    {
+      g_free (subdir);
+      return TRUE;
+    }
+
+  g_set_error (error,
+               GIMP_THUMB_ERROR, GIMP_THUMB_ERROR_MKDIR,
+               _("Failed to create thumbnail folder '%s'."),
+               subdir);
+  g_free (subdir);
+
+  return FALSE;
+}
+
+/**
+ * gimp_thumb_name_from_uri:
+ * @uri: an escaped URI
+ * @size: a #GimpThumbSize
+ *
+ * Creates the name of the thumbnail file of the specified @size that
+ * belongs to an image file located at the given @uri.
+ *
+ * Return value: a newly allocated filename in the encoding of the
+ *               filesystem or %NULL if @uri points to the user's
+ *               thumbnail repository.
+ **/
+gchar *
+gimp_thumb_name_from_uri (const gchar   *uri,
+                          GimpThumbSize  size)
+{
+  g_return_val_if_fail (gimp_thumb_initialized, NULL);
+  g_return_val_if_fail (uri != NULL, NULL);
+
+  if (strstr (uri, thumb_dir))
+    return NULL;
+
+  size = gimp_thumb_size (size);
+
+  return g_build_filename (thumb_subdirs[size],
+                           gimp_thumb_png_name (uri),
+                           NULL);
+}
+
+/**
+ * gimp_thumb_name_from_uri_local:
+ * @uri: an escaped URI
+ * @size: a #GimpThumbSize
+ *
+ * Creates the name of a local thumbnail file of the specified @size
+ * that belongs to an image file located at the given @uri. Local
+ * thumbnails have been introduced with version 0.7 of the spec.
+ *
+ * Return value: a newly allocated filename in the encoding of the
+ *               filesystem or %NULL if @uri is a remote file or
+ *               points to the user's thumbnail repository.
+ *
+ * Since: 2.2
+ **/
+gchar *
+gimp_thumb_name_from_uri_local (const gchar   *uri,
+                                GimpThumbSize  size)
+{
+  gchar *filename;
+  gchar *result = NULL;
+
+  g_return_val_if_fail (gimp_thumb_initialized, NULL);
+  g_return_val_if_fail (uri != NULL, NULL);
+  g_return_val_if_fail (size > GIMP_THUMB_SIZE_FAIL, NULL);
+
+  if (strstr (uri, thumb_dir))
+    return NULL;
+
+  filename = _gimp_thumb_filename_from_uri (uri);
+
+  if (filename)
+    {
+      const gchar *baseuri = strrchr (uri, '/');
+
+      if (baseuri && baseuri[0] && baseuri[1])
+        {
+          gchar *dirname = g_path_get_dirname (filename);
+          gint   i       = gimp_thumb_size (size);
+
+          result = g_build_filename (dirname,
+                                     ".thumblocal", thumb_sizenames[i],
+                                     gimp_thumb_png_name (uri),
+                                     NULL);
+
+          g_free (dirname);
+        }
+
+      g_free (filename);
+    }
+
+  return result;
+}
+
+/**
+ * gimp_thumb_find_thumb:
+ * @uri: an escaped URI
+ * @size: pointer to a #GimpThumbSize
+ *
+ * This function attempts to locate a thumbnail for the given
+ * @uri. First it tries the size that is stored at @size. If no
+ * thumbnail of that size is found, it will look for a larger
+ * thumbnail, then falling back to a smaller size.
+ *
+ * If the user's thumbnail repository doesn't provide a thumbnail but
+ * a local thumbnail repository exists for the folder the image is
+ * located in, the same search is done among the local thumbnails (if
+ * there are any).
+ *
+ * If a thumbnail is found, it's size is written to the variable
+ * pointer to by @size and the file location is returned.
+ *
+ * Return value: a newly allocated string in the encoding of the
+ *               filesystem or %NULL if no thumbnail for @uri was found
+ **/
+gchar *
+gimp_thumb_find_thumb (const gchar   *uri,
+                       GimpThumbSize *size)
+{
+  gchar *result;
+
+  g_return_val_if_fail (gimp_thumb_initialized, NULL);
+  g_return_val_if_fail (uri != NULL, NULL);
+  g_return_val_if_fail (size != NULL, NULL);
+  g_return_val_if_fail (*size > GIMP_THUMB_SIZE_FAIL, NULL);
+
+  result = gimp_thumb_png_lookup (gimp_thumb_png_name (uri), NULL, size);
+
+  if (! result)
+    {
+      gchar *filename = _gimp_thumb_filename_from_uri (uri);
+
+      if (filename)
+        {
+          const gchar *baseuri = strrchr (uri, '/');
+
+          if (baseuri && baseuri[0] && baseuri[1])
+            {
+              gchar *dirname = g_path_get_dirname (filename);
+
+              result = gimp_thumb_png_lookup (gimp_thumb_png_name (baseuri + 1),
+                                              dirname, size);
+
+              g_free (dirname);
+            }
+
+          g_free (filename);
+        }
+    }
+
+  return result;
+}
+
+/**
+ * gimp_thumb_file_test:
+ * @filename: a filename in the encoding of the filesystem
+ * @mtime: return location for modification time
+ * @size: return location for file size
+ * @err_no: return location for system "errno"
+ *
+ * This is a convenience and portability wrapper around stat(). It
+ * checks if the given @filename exists and returns modification time
+ * and file size in 64bit integer values.
+ *
+ * Return value: The type of the file, or #GIMP_THUMB_FILE_TYPE_NONE if
+ *               the file doesn't exist.
+ **/
+GimpThumbFileType
+gimp_thumb_file_test (const gchar *filename,
+                      gint64      *mtime,
+                      gint64      *size,
+                      gint        *err_no)
+{
+  GimpThumbFileType  type = GIMP_THUMB_FILE_TYPE_NONE;
+  GFile             *file;
+  GFileInfo         *info;
+
+  g_return_val_if_fail (filename != NULL, FALSE);
+
+  file = g_file_new_for_path (filename);
+
+  info = g_file_query_info (file,
+                            G_FILE_ATTRIBUTE_STANDARD_TYPE ","
+                            G_FILE_ATTRIBUTE_STANDARD_SIZE ","
+                            G_FILE_ATTRIBUTE_TIME_MODIFIED,
+                            G_FILE_QUERY_INFO_NONE,
+                            NULL, NULL);
+
+  if (info)
+    {
+      if (mtime)
+        *mtime =
+          g_file_info_get_attribute_uint64 (info,
+                                            G_FILE_ATTRIBUTE_TIME_MODIFIED);
+
+      if (size)
+        *size = g_file_info_get_size (info);
+
+      if (err_no)
+        *err_no = 0;
+
+      switch (g_file_info_get_attribute_uint32 (info,
+                                                G_FILE_ATTRIBUTE_STANDARD_TYPE))
+        {
+        case G_FILE_TYPE_REGULAR:
+          type = GIMP_THUMB_FILE_TYPE_REGULAR;
+          break;
+
+        case G_FILE_TYPE_DIRECTORY:
+          type = GIMP_THUMB_FILE_TYPE_FOLDER;
+          break;
+
+        default:
+          type = GIMP_THUMB_FILE_TYPE_SPECIAL;
+          break;
+        }
+
+      g_object_unref (info);
+    }
+  else
+    {
+      if (mtime)  *mtime  = 0;
+      if (size)   *size   = 0;
+      if (err_no) *err_no = ENOENT;
+    }
+
+  g_object_unref (file);
+
+  return type;
+}
+
+/**
+ * gimp_thumbs_delete_for_uri:
+ * @uri: an escaped URI
+ *
+ * Deletes all thumbnails for the image file specified by @uri from the
+ * user's thumbnail repository.
+ *
+ * Since: 2.2
+ **/
+void
+gimp_thumbs_delete_for_uri (const gchar *uri)
+{
+  gint i;
+
+  g_return_if_fail (gimp_thumb_initialized);
+  g_return_if_fail (uri != NULL);
+
+  for (i = 0; i < thumb_num_sizes; i++)
+    {
+      gchar *filename = gimp_thumb_name_from_uri (uri, thumb_sizes[i]);
+
+      if (filename)
+        {
+          g_unlink (filename);
+          g_free (filename);
+        }
+    }
+}
+
+/**
+ * gimp_thumbs_delete_for_uri_local:
+ * @uri: an escaped URI
+ *
+ * Deletes all thumbnails for the image file specified by @uri from
+ * the local thumbnail repository.
+ *
+ * Since: 2.2
+ **/
+void
+gimp_thumbs_delete_for_uri_local (const gchar *uri)
+{
+  gint i;
+
+  g_return_if_fail (gimp_thumb_initialized);
+  g_return_if_fail (uri != NULL);
+
+  for (i = 0; i < thumb_num_sizes; i++)
+    {
+      gchar *filename = gimp_thumb_name_from_uri_local (uri, thumb_sizes[i]);
+
+      if (filename)
+        {
+          g_unlink (filename);
+          g_free (filename);
+        }
+    }
+}
+
+void
+_gimp_thumbs_delete_others (const gchar   *uri,
+                            GimpThumbSize  size)
+{
+  gint i;
+
+  g_return_if_fail (gimp_thumb_initialized);
+  g_return_if_fail (uri != NULL);
+
+  size = gimp_thumb_size (size);
+
+  for (i = 0; i < thumb_num_sizes; i++)
+    {
+      gchar *filename;
+
+      if (i == size)
+        continue;
+
+      filename = gimp_thumb_name_from_uri (uri, thumb_sizes[i]);
+      if (filename)
+        {
+          g_unlink (filename);
+          g_free (filename);
+        }
+    }
+}
+
+gchar *
+_gimp_thumb_filename_from_uri (const gchar *uri)
+{
+  gchar *filename;
+  gchar *hostname;
+
+  g_return_val_if_fail (uri != NULL, NULL);
+
+  filename = g_filename_from_uri (uri, &hostname, NULL);
+
+  if (!filename)
+    return NULL;
+
+  if (hostname)
+    {
+      /*  we have a file: URI with a hostname                           */
+
+#ifdef G_OS_WIN32
+      /*  on Win32, create a valid UNC path and use it as the filename  */
+      gchar *tmp = g_build_filename ("//", hostname, filename, NULL);
+
+      g_free (filename);
+      filename = tmp;
+#else
+      /*  otherwise return NULL, caller should use URI then             */
+      g_free (filename);
+      filename = NULL;
+#endif
+
+      g_free (hostname);
+    }
+
+  return filename;
+}
+
+static void
+gimp_thumb_exit (void)
+{
+  gint i;
+
+  g_free (thumb_dir);
+  g_free (thumb_sizes);
+  g_free (thumb_sizenames);
+  for (i = 0; i < thumb_num_sizes; i++)
+    g_free (thumb_subdirs[i]);
+  g_free (thumb_subdirs);
+  g_free (thumb_fail_subdir);
+
+  thumb_num_sizes        = 0;
+  thumb_sizes            = NULL;
+  thumb_sizenames        = NULL;
+  thumb_dir              = NULL;
+  thumb_subdirs          = NULL;
+  thumb_fail_subdir      = NULL;
+  gimp_thumb_initialized = FALSE;
+}
+
+static gint
+gimp_thumb_size (GimpThumbSize size)
+{
+  gint i = 0;
+
+  if (size > GIMP_THUMB_SIZE_FAIL)
+    {
+      for (i = 1;
+           i < thumb_num_sizes && thumb_sizes[i] < size;
+           i++)
+        /* nothing */;
+
+      if (i == thumb_num_sizes)
+        i--;
+    }
+
+  return i;
+}
+
+static gchar *
+gimp_thumb_png_lookup (const gchar   *name,
+                       const gchar   *basedir,
+                       GimpThumbSize *size)
+{
+  gchar  *thumb_name = NULL;
+  gchar **subdirs    = NULL;
+  gint    i, n;
+
+  if (basedir)
+    {
+      gchar *dir = g_build_filename (basedir, ".thumblocal", NULL);
+
+      if (g_file_test (basedir, G_FILE_TEST_IS_DIR))
+        {
+          gint i;
+
+          subdirs = g_new (gchar *, thumb_num_sizes);
+
+          subdirs[0] = NULL;  /*  GIMP_THUMB_SIZE_FAIL  */
+
+          for (i = 1; i < thumb_num_sizes; i++)
+            subdirs[i] = g_build_filename (dir, thumb_sizenames[i], NULL);
+        }
+
+      g_free (dir);
+    }
+  else
+    {
+      subdirs = thumb_subdirs;
+    }
+
+  if (! subdirs)
+    return NULL;
+
+  i = n = gimp_thumb_size (*size);
+
+  for (; i < thumb_num_sizes; i++)
+    {
+      if (! subdirs[i])
+        continue;
+
+      thumb_name = g_build_filename (subdirs[i], name, NULL);
+
+      if (gimp_thumb_file_test (thumb_name,
+                                NULL, NULL,
+                                NULL) == GIMP_THUMB_FILE_TYPE_REGULAR)
+        {
+          *size = thumb_sizes[i];
+          goto finish;
+        }
+
+      g_free (thumb_name);
+    }
+
+  for (i = n - 1; i >= 0; i--)
+    {
+      if (! subdirs[i])
+        continue;
+
+      thumb_name = g_build_filename (subdirs[i], name, NULL);
+
+      if (gimp_thumb_file_test (thumb_name,
+                                NULL, NULL,
+                                NULL) == GIMP_THUMB_FILE_TYPE_REGULAR)
+        {
+          *size = thumb_sizes[i];
+          goto finish;
+        }
+
+      g_free (thumb_name);
+    }
+
+  thumb_name = NULL;
+
+ finish:
+  if (basedir)
+    {
+      for (i = 0; i < thumb_num_sizes; i++)
+        g_free (subdirs[i]);
+      g_free (subdirs);
+    }
+
+  return thumb_name;
+}
+
+static const gchar *
+gimp_thumb_png_name (const gchar *uri)
+{
+  static gchar name[40];
+
+  GChecksum *checksum;
+  guchar     digest[16];
+  gsize      len = sizeof (digest);
+  gsize      i;
+
+  checksum = g_checksum_new (G_CHECKSUM_MD5);
+  g_checksum_update (checksum, (const guchar *) uri, -1);
+  g_checksum_get_digest (checksum, digest, &len);
+  g_checksum_free (checksum);
+
+  for (i = 0; i < len; i++)
+    {
+      guchar n;
+
+      n = (digest[i] >> 4) & 0xF;
+      name[i * 2]     = (n > 9) ? 'a' + n - 10 : '0' + n;
+
+      n = digest[i] & 0xF;
+      name[i * 2 + 1] = (n > 9) ? 'a' + n - 10 : '0' + n;
+    }
+
+  strncpy (name + 32, ".png", 5);
+
+  return (const gchar *) name;
+}
diff --git a/libgimpthumb/gimpthumb-utils.h b/libgimpthumb/gimpthumb-utils.h
new file mode 100644
index 0000000..7346e1a
--- /dev/null
+++ b/libgimpthumb/gimpthumb-utils.h
@@ -0,0 +1,73 @@
+/* LIBGIMP - The GIMP Library
+ * Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
+ *
+ * Thumbnail handling according to the Thumbnail Managing Standard.
+ * https://specifications.freedesktop.org/thumbnail-spec/
+ *
+ * Copyright (C) 2001-2003  Sven Neumann <sven@gimp.org>
+ *                          Michael Natterer <mitch@gimp.org>
+ *
+ * This library is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library.  If not, see
+ * <https://www.gnu.org/licenses/>.
+ */
+
+#if !defined (__GIMP_THUMB_H_INSIDE__) && !defined (GIMP_THUMB_COMPILATION)
+#error "Only <libgimpthumb/gimpthumb.h> can be included directly."
+#endif
+
+#ifndef __GIMP_THUMB_UTILS_H__
+#define __GIMP_THUMB_UTILS_H__
+
+G_BEGIN_DECLS
+
+
+gboolean            gimp_thumb_init                   (const gchar    *creator,
+                                                       const gchar    *thumb_basedir);
+
+const gchar       * gimp_thumb_get_thumb_base_dir     (void);
+
+gchar             * gimp_thumb_find_thumb             (const gchar    *uri,
+                                                       GimpThumbSize  *size) G_GNUC_MALLOC;
+
+GimpThumbFileType   gimp_thumb_file_test              (const gchar    *filename,
+                                                       gint64         *mtime,
+                                                       gint64         *size,
+                                                       gint           *err_no);
+
+gchar             * gimp_thumb_name_from_uri          (const gchar    *uri,
+                                                       GimpThumbSize   size) G_GNUC_MALLOC;
+const gchar       * gimp_thumb_get_thumb_dir          (GimpThumbSize   size);
+gboolean            gimp_thumb_ensure_thumb_dir       (GimpThumbSize   size,
+                                                       GError        **error);
+void                gimp_thumbs_delete_for_uri        (const gchar    *uri);
+
+gchar             * gimp_thumb_name_from_uri_local    (const gchar    *uri,
+                                                       GimpThumbSize   size) G_GNUC_MALLOC;
+gchar             * gimp_thumb_get_thumb_dir_local    (const gchar    *dirname,
+                                                       GimpThumbSize   size) G_GNUC_MALLOC;
+gboolean            gimp_thumb_ensure_thumb_dir_local (const gchar    *dirname,
+                                                       GimpThumbSize   size,
+                                                       GError        **error);
+void                gimp_thumbs_delete_for_uri_local  (const gchar    *uri);
+
+
+/*  for internal use only   */
+G_GNUC_INTERNAL void    _gimp_thumbs_delete_others    (const gchar    *uri,
+                                                       GimpThumbSize   size);
+G_GNUC_INTERNAL gchar * _gimp_thumb_filename_from_uri (const gchar    *uri);
+
+
+G_END_DECLS
+
+#endif /* __GIMP_THUMB_UTILS_H__ */
diff --git a/libgimpthumb/gimpthumb.def b/libgimpthumb/gimpthumb.def
new file mode 100644
index 0000000..db8c44d
--- /dev/null
+++ b/libgimpthumb/gimpthumb.def
@@ -0,0 +1,32 @@
+EXPORTS
+	gimp_thumb_ensure_thumb_dir
+	gimp_thumb_ensure_thumb_dir_local
+	gimp_thumb_error_quark
+	gimp_thumb_file_test
+	gimp_thumb_file_type_get_type
+	gimp_thumb_find_thumb
+	gimp_thumb_get_thumb_base_dir
+	gimp_thumb_get_thumb_dir
+	gimp_thumb_get_thumb_dir_local
+	gimp_thumb_init
+	gimp_thumb_name_from_uri
+	gimp_thumb_name_from_uri_local
+	gimp_thumb_size_get_type
+	gimp_thumb_state_get_type
+	gimp_thumbnail_check_thumb
+	gimp_thumbnail_delete_failure
+	gimp_thumbnail_delete_others
+	gimp_thumbnail_get_type
+	gimp_thumbnail_has_failed
+	gimp_thumbnail_load_thumb
+	gimp_thumbnail_new
+	gimp_thumbnail_peek_image
+	gimp_thumbnail_peek_thumb
+	gimp_thumbnail_save_failure
+	gimp_thumbnail_save_thumb
+	gimp_thumbnail_save_thumb_local
+	gimp_thumbnail_set_filename
+	gimp_thumbnail_set_from_thumb
+	gimp_thumbnail_set_uri
+	gimp_thumbs_delete_for_uri
+	gimp_thumbs_delete_for_uri_local
diff --git a/libgimpthumb/gimpthumb.h b/libgimpthumb/gimpthumb.h
new file mode 100644
index 0000000..97a038a
--- /dev/null
+++ b/libgimpthumb/gimpthumb.h
@@ -0,0 +1,38 @@
+/* LIBGIMP - The GIMP Library
+ * Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
+ *
+ * Thumbnail handling according to the Thumbnail Managing Standard.
+ * https://specifications.freedesktop.org/thumbnail-spec/
+ *
+ * Copyright (C) 2001-2003  Sven Neumann <sven@gimp.org>
+ *                          Michael Natterer <mitch@gimp.org>
+ *
+ * This library is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library.  If not, see
+ * <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef __GIMP_THUMB_H__
+#define __GIMP_THUMB_H__
+
+#define __GIMP_THUMB_H_INSIDE__
+
+#include <libgimpthumb/gimpthumb-types.h>
+
+#include <libgimpthumb/gimpthumb-error.h>
+#include <libgimpthumb/gimpthumb-utils.h>
+#include <libgimpthumb/gimpthumbnail.h>
+
+#undef __GIMP_THUMB_H_INSIDE__
+
+#endif /* __GIMP_THUMB_H__ */
diff --git a/libgimpthumb/gimpthumbnail.c b/libgimpthumb/gimpthumbnail.c
new file mode 100644
index 0000000..e7f9d3d
--- /dev/null
+++ b/libgimpthumb/gimpthumbnail.c
@@ -0,0 +1,1400 @@
+/* LIBGIMP - The GIMP Library
+ * Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
+ *
+ * Thumbnail handling according to the Thumbnail Managing Standard.
+ * https://specifications.freedesktop.org/thumbnail-spec/
+ *
+ * Copyright (C) 2001-2004  Sven Neumann <sven@gimp.org>
+ *                          Michael Natterer <mitch@gimp.org>
+ *
+ * This library is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library.  If not, see
+ * <https://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <string.h>
+#include <errno.h>
+#include <sys/types.h>
+
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+#include <glib/gstdio.h>
+#include <gdk-pixbuf/gdk-pixbuf.h>
+
+#include "libgimpbase/gimpparam.h"
+
+#ifdef G_OS_WIN32
+#include "libgimpbase/gimpwin32-io.h"
+#include <process.h>
+#define _getpid getpid
+#endif
+
+#include "gimpthumb-types.h"
+#include "gimpthumb-error.h"
+#include "gimpthumb-utils.h"
+#include "gimpthumbnail.h"
+
+#include "libgimp/libgimp-intl.h"
+
+
+/**
+ * SECTION: gimpthumbnail
+ * @title: GimpThumbnail
+ * @short_description: The GimpThumbnail object
+ *
+ * The GimpThumbnail object
+ **/
+
+
+/*  #define GIMP_THUMB_DEBUG  */
+
+
+#if defined (GIMP_THUMB_DEBUG) && defined (__GNUC__)
+#define GIMP_THUMB_DEBUG_CALL(t) \
+        g_printerr ("%s: %s\n", \
+                     __FUNCTION__, t->image_uri ? t->image_uri : "(null)")
+#else
+#define GIMP_THUMB_DEBUG_CALL(t) ((void)(0))
+#endif
+
+
+#define TAG_DESCRIPTION           "tEXt::Description"
+#define TAG_SOFTWARE              "tEXt::Software"
+#define TAG_THUMB_URI             "tEXt::Thumb::URI"
+#define TAG_THUMB_MTIME           "tEXt::Thumb::MTime"
+#define TAG_THUMB_FILESIZE        "tEXt::Thumb::Size"
+#define TAG_THUMB_MIMETYPE        "tEXt::Thumb::Mimetype"
+#define TAG_THUMB_IMAGE_WIDTH     "tEXt::Thumb::Image::Width"
+#define TAG_THUMB_IMAGE_HEIGHT    "tEXt::Thumb::Image::Height"
+#define TAG_THUMB_GIMP_TYPE       "tEXt::Thumb::X-GIMP::Type"
+#define TAG_THUMB_GIMP_LAYERS     "tEXt::Thumb::X-GIMP::Layers"
+
+
+enum
+{
+  PROP_0,
+  PROP_IMAGE_STATE,
+  PROP_IMAGE_URI,
+  PROP_IMAGE_MTIME,
+  PROP_IMAGE_FILESIZE,
+  PROP_IMAGE_MIMETYPE,
+  PROP_IMAGE_WIDTH,
+  PROP_IMAGE_HEIGHT,
+  PROP_IMAGE_TYPE,
+  PROP_IMAGE_NUM_LAYERS,
+  PROP_THUMB_STATE
+};
+
+
+static void      gimp_thumbnail_finalize     (GObject        *object);
+static void      gimp_thumbnail_set_property (GObject        *object,
+                                              guint           property_id,
+                                              const GValue   *value,
+                                              GParamSpec     *pspec);
+static void      gimp_thumbnail_get_property (GObject        *object,
+                                              guint           property_id,
+                                              GValue         *value,
+                                              GParamSpec     *pspec);
+static void      gimp_thumbnail_reset_info   (GimpThumbnail  *thumbnail);
+
+static void      gimp_thumbnail_update_image (GimpThumbnail  *thumbnail);
+static void      gimp_thumbnail_update_thumb (GimpThumbnail  *thumbnail,
+                                              GimpThumbSize   size);
+
+static gboolean  gimp_thumbnail_save         (GimpThumbnail  *thumbnail,
+                                              GimpThumbSize   size,
+                                              const gchar    *filename,
+                                              GdkPixbuf      *pixbuf,
+                                              const gchar    *software,
+                                              GError        **error);
+#ifdef GIMP_THUMB_DEBUG
+static void      gimp_thumbnail_debug_notify (GObject        *object,
+                                              GParamSpec     *pspec);
+#endif
+
+
+G_DEFINE_TYPE (GimpThumbnail, gimp_thumbnail, G_TYPE_OBJECT)
+
+#define parent_class gimp_thumbnail_parent_class
+
+
+static void
+gimp_thumbnail_class_init (GimpThumbnailClass *klass)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+  object_class->finalize     = gimp_thumbnail_finalize;
+  object_class->set_property = gimp_thumbnail_set_property;
+  object_class->get_property = gimp_thumbnail_get_property;
+
+  g_object_class_install_property (object_class,
+                                   PROP_IMAGE_STATE,
+                                   g_param_spec_enum ("image-state", NULL,
+                                                      "State of the image associated to the thumbnail object",
+                                                      GIMP_TYPE_THUMB_STATE,
+                                                      GIMP_THUMB_STATE_UNKNOWN,
+                                                      GIMP_PARAM_READWRITE));
+  g_object_class_install_property (object_class,
+                                   PROP_IMAGE_URI,
+                                   g_param_spec_string ("image-uri", NULL,
+                                                       "URI of the image file",
+                                                        NULL,
+                                                        GIMP_PARAM_READWRITE));
+  g_object_class_install_property (object_class,
+                                   PROP_IMAGE_MTIME,
+                                   g_param_spec_int64 ("image-mtime", NULL,
+                                                       "Modification time of the image file in seconds since the Epoch",
+                                                       G_MININT64, G_MAXINT64, 0,
+                                                       GIMP_PARAM_READWRITE));
+  g_object_class_install_property (object_class,
+                                   PROP_IMAGE_FILESIZE,
+                                   g_param_spec_int64 ("image-filesize", NULL,
+                                                       "Size of the image file in bytes",
+                                                       0, G_MAXINT64, 0,
+                                                       GIMP_PARAM_READWRITE));
+  /**
+   * GimpThumbnail::image-mimetype:
+   *
+   * Image mimetype
+   *
+   * Since: 2.2
+   **/
+  g_object_class_install_property (object_class,
+                                   PROP_IMAGE_MIMETYPE,
+                                   g_param_spec_string ("image-mimetype", NULL,
+                                                        "Image mimetype",
+                                                        NULL,
+                                                        GIMP_PARAM_READWRITE));
+  g_object_class_install_property (object_class,
+                                   PROP_IMAGE_WIDTH,
+                                   g_param_spec_int ("image-width", NULL,
+                                                     "Width of the image in pixels",
+                                                     0, G_MAXINT, 0,
+                                                     GIMP_PARAM_READWRITE));
+  g_object_class_install_property (object_class,
+                                   PROP_IMAGE_HEIGHT,
+                                   g_param_spec_int ("image-height", NULL,
+                                                     "Height of the image in pixels",
+                                                     0, G_MAXINT, 0,
+                                                     GIMP_PARAM_READWRITE));
+  g_object_class_install_property (object_class,
+                                   PROP_IMAGE_TYPE,
+                                   g_param_spec_string ("image-type", NULL,
+                                                        "String describing the type of the image format",
+                                                        NULL,
+                                                        GIMP_PARAM_READWRITE));
+  g_object_class_install_property (object_class,
+                                   PROP_IMAGE_NUM_LAYERS,
+                                   g_param_spec_int ("image-num-layers", NULL,
+                                                     "The number of layers in the image",
+                                                     0, G_MAXINT, 0,
+                                                     GIMP_PARAM_READWRITE));
+  g_object_class_install_property (object_class,
+                                   PROP_THUMB_STATE,
+                                   g_param_spec_enum ("thumb-state", NULL,
+                                                      "State of the thumbnail file",
+                                                      GIMP_TYPE_THUMB_STATE,
+                                                      GIMP_THUMB_STATE_UNKNOWN,
+                                                      GIMP_PARAM_READWRITE));
+}
+
+static void
+gimp_thumbnail_init (GimpThumbnail *thumbnail)
+{
+  thumbnail->image_state      = GIMP_THUMB_STATE_UNKNOWN;
+  thumbnail->image_uri        = NULL;
+  thumbnail->image_filename   = NULL;
+  thumbnail->image_mtime      = 0;
+  thumbnail->image_filesize   = 0;
+  thumbnail->image_mimetype   = NULL;
+  thumbnail->image_width      = 0;
+  thumbnail->image_height     = 0;
+  thumbnail->image_type       = NULL;
+  thumbnail->image_num_layers = 0;
+
+  thumbnail->thumb_state      = GIMP_THUMB_STATE_UNKNOWN;
+  thumbnail->thumb_size       = -1;
+  thumbnail->thumb_filename   = NULL;
+  thumbnail->thumb_mtime      = 0;
+  thumbnail->thumb_filesize   = 0;
+
+#ifdef GIMP_THUMB_DEBUG
+  g_signal_connect (thumbnail, "notify",
+                    G_CALLBACK (gimp_thumbnail_debug_notify),
+                    NULL);
+#endif
+}
+
+static void
+gimp_thumbnail_finalize (GObject *object)
+{
+  GimpThumbnail *thumbnail = GIMP_THUMBNAIL (object);
+
+  g_clear_pointer (&thumbnail->image_uri,      g_free);
+  g_clear_pointer (&thumbnail->image_filename, g_free);
+  g_clear_pointer (&thumbnail->image_mimetype, g_free);
+  g_clear_pointer (&thumbnail->image_type,     g_free);
+  g_clear_pointer (&thumbnail->thumb_filename, g_free);
+
+  G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+static void
+gimp_thumbnail_set_property (GObject      *object,
+                             guint         property_id,
+                             const GValue *value,
+                             GParamSpec   *pspec)
+{
+  GimpThumbnail *thumbnail = GIMP_THUMBNAIL (object);
+
+  switch (property_id)
+    {
+    case PROP_IMAGE_STATE:
+      thumbnail->image_state = g_value_get_enum (value);
+      break;
+    case PROP_IMAGE_URI:
+      gimp_thumbnail_set_uri (GIMP_THUMBNAIL (object),
+                              g_value_get_string (value));
+      break;
+    case PROP_IMAGE_MTIME:
+      thumbnail->image_mtime = g_value_get_int64 (value);
+      break;
+    case PROP_IMAGE_FILESIZE:
+      thumbnail->image_filesize = g_value_get_int64 (value);
+      break;
+    case PROP_IMAGE_MIMETYPE:
+      g_free (thumbnail->image_mimetype);
+      thumbnail->image_mimetype = g_value_dup_string (value);
+      break;
+    case PROP_IMAGE_WIDTH:
+      thumbnail->image_width = g_value_get_int (value);
+      break;
+    case PROP_IMAGE_HEIGHT:
+      thumbnail->image_height = g_value_get_int (value);
+      break;
+    case PROP_IMAGE_TYPE:
+      g_free (thumbnail->image_type);
+      thumbnail->image_type = g_value_dup_string (value);
+      break;
+    case PROP_IMAGE_NUM_LAYERS:
+      thumbnail->image_num_layers = g_value_get_int (value);
+      break;
+    case PROP_THUMB_STATE:
+      thumbnail->thumb_state = g_value_get_enum (value);
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+      break;
+    }
+}
+
+static void
+gimp_thumbnail_get_property (GObject    *object,
+                             guint       property_id,
+                             GValue     *value,
+                             GParamSpec *pspec)
+{
+  GimpThumbnail *thumbnail = GIMP_THUMBNAIL (object);
+
+  switch (property_id)
+    {
+    case PROP_IMAGE_STATE:
+      g_value_set_enum (value, thumbnail->image_state);
+      break;
+    case PROP_IMAGE_URI:
+      g_value_set_string (value, thumbnail->image_uri);
+      break;
+    case PROP_IMAGE_MTIME:
+      g_value_set_int64 (value, thumbnail->image_mtime);
+      break;
+    case PROP_IMAGE_FILESIZE:
+      g_value_set_int64 (value, thumbnail->image_filesize);
+      break;
+    case PROP_IMAGE_MIMETYPE:
+      g_value_set_string (value, thumbnail->image_mimetype);
+      break;
+    case PROP_IMAGE_WIDTH:
+      g_value_set_int (value, thumbnail->image_width);
+      break;
+    case PROP_IMAGE_HEIGHT:
+      g_value_set_int (value, thumbnail->image_height);
+      break;
+    case PROP_IMAGE_TYPE:
+      g_value_set_string (value, thumbnail->image_type);
+      break;
+    case PROP_IMAGE_NUM_LAYERS:
+      g_value_set_int (value, thumbnail->image_num_layers);
+      break;
+    case PROP_THUMB_STATE:
+      g_value_set_enum (value, thumbnail->thumb_state);
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+      break;
+    }
+}
+
+/**
+ * gimp_thumbnail_new:
+ *
+ * Creates a new #GimpThumbnail object.
+ *
+ * Return value: a newly allocated GimpThumbnail object
+ **/
+GimpThumbnail *
+gimp_thumbnail_new (void)
+{
+  return g_object_new (GIMP_TYPE_THUMBNAIL, NULL);
+}
+
+/**
+ * gimp_thumbnail_set_uri:
+ * @thumbnail: a #GimpThumbnail object
+ * @uri: an escaped URI
+ *
+ * Sets the location of the image file associated with the #thumbnail.
+ *
+ * All information stored in the #GimpThumbnail is reset.
+ **/
+void
+gimp_thumbnail_set_uri (GimpThumbnail *thumbnail,
+                        const gchar   *uri)
+{
+  g_return_if_fail (GIMP_IS_THUMBNAIL (thumbnail));
+
+  GIMP_THUMB_DEBUG_CALL (thumbnail);
+
+  if (thumbnail->image_uri)
+    g_free (thumbnail->image_uri);
+
+  thumbnail->image_uri = g_strdup (uri);
+
+  g_clear_pointer (&thumbnail->image_filename, g_free);
+  g_clear_pointer (&thumbnail->thumb_filename, g_free);
+
+  thumbnail->thumb_size     = -1;
+  thumbnail->thumb_filesize = 0;
+  thumbnail->thumb_mtime    = 0;
+
+  g_object_set (thumbnail,
+                "image-state",      GIMP_THUMB_STATE_UNKNOWN,
+                "image-filesize",   (gint64) 0,
+                "image-mtime",      (gint64) 0,
+                "image-mimetype",   NULL,
+                "image-width",      0,
+                "image-height",     0,
+                "image-type",       NULL,
+                "image-num-layers", 0,
+                "thumb-state",      GIMP_THUMB_STATE_UNKNOWN,
+                NULL);
+}
+
+/**
+ * gimp_thumbnail_set_filename:
+ * @thumbnail: a #GimpThumbnail object
+ * @filename: a local filename in the encoding of the filesystem
+ * @error: return location for possible errors
+ *
+ * Sets the location of the image file associated with the #thumbnail.
+ *
+ * Return value: %TRUE if the filename was successfully set,
+ *               %FALSE otherwise
+ **/
+gboolean
+gimp_thumbnail_set_filename (GimpThumbnail  *thumbnail,
+                             const gchar    *filename,
+                             GError        **error)
+{
+  gchar *uri = NULL;
+
+  g_return_val_if_fail (GIMP_IS_THUMBNAIL (thumbnail), FALSE);
+  g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
+
+  GIMP_THUMB_DEBUG_CALL (thumbnail);
+
+  if (filename)
+    uri = g_filename_to_uri (filename, NULL, error);
+
+  gimp_thumbnail_set_uri (thumbnail, uri);
+
+  g_free (uri);
+
+  return (!filename || uri);
+}
+
+/**
+ * gimp_thumbnail_set_from_thumb:
+ * @thumbnail: a #GimpThumbnail object
+ * @filename: filename of a local thumbnail file
+ * @error: return location for possible errors
+ *
+ * This function tries to load the thumbnail file pointed to by
+ * @filename and retrieves the URI of the original image file from
+ * it. This allows you to find the image file associated with a
+ * thumbnail file.
+ *
+ * This will only work with thumbnails from the global thumbnail
+ * directory that contain a valid Thumb::URI tag.
+ *
+ * Return value: %TRUE if the pixbuf could be loaded, %FALSE otherwise
+ **/
+gboolean
+gimp_thumbnail_set_from_thumb (GimpThumbnail  *thumbnail,
+                               const gchar    *filename,
+                               GError        **error)
+{
+  GdkPixbuf   *pixbuf;
+  const gchar *uri;
+
+  g_return_val_if_fail (GIMP_IS_THUMBNAIL (thumbnail), FALSE);
+  g_return_val_if_fail (filename != NULL, FALSE);
+  g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
+
+  GIMP_THUMB_DEBUG_CALL (thumbnail);
+
+  pixbuf = gdk_pixbuf_new_from_file (filename, error);
+  if (! pixbuf)
+    return FALSE;
+
+  uri = gdk_pixbuf_get_option (pixbuf, TAG_THUMB_URI);
+  if (! uri)
+    {
+      g_set_error (error, GIMP_THUMB_ERROR, 0,
+                   _("Thumbnail contains no Thumb::URI tag"));
+      g_object_unref (pixbuf);
+      return FALSE;
+    }
+
+  gimp_thumbnail_set_uri (thumbnail, uri);
+  g_object_unref (pixbuf);
+
+  return TRUE;
+}
+
+/**
+ * gimp_thumbnail_peek_image:
+ * @thumbnail: a #GimpThumbnail object
+ *
+ * Checks the image file associated with the @thumbnail and updates
+ * information such as state, filesize and modification time.
+ *
+ * Return value: the image's #GimpThumbState after the update
+ **/
+GimpThumbState
+gimp_thumbnail_peek_image (GimpThumbnail *thumbnail)
+{
+  g_return_val_if_fail (GIMP_IS_THUMBNAIL (thumbnail),
+                        GIMP_THUMB_STATE_UNKNOWN);
+
+  GIMP_THUMB_DEBUG_CALL (thumbnail);
+
+  g_object_freeze_notify (G_OBJECT (thumbnail));
+
+  gimp_thumbnail_update_image (thumbnail);
+
+  g_object_thaw_notify (G_OBJECT (thumbnail));
+
+  return thumbnail->image_state;
+}
+
+/**
+ * gimp_thumbnail_peek_thumb:
+ * @thumbnail: a #GimpThumbnail object
+ * @size: the preferred size of the thumbnail image
+ *
+ * Checks if a thumbnail file for the @thumbnail exists. It doesn't
+ * load the thumbnail image and thus cannot check if the thumbnail is
+ * valid and uptodate for the image file asosciated with the
+ * @thumbnail.
+ *
+ * If you want to check the thumbnail, either attempt to load it using
+ * gimp_thumbnail_load_thumb(), or, if you don't need the resulting
+ * thumbnail pixbuf, use gimp_thumbnail_check_thumb().
+ *
+ * Return value: the thumbnail's #GimpThumbState after the update
+ **/
+GimpThumbState
+gimp_thumbnail_peek_thumb (GimpThumbnail *thumbnail,
+                           GimpThumbSize  size)
+{
+  g_return_val_if_fail (GIMP_IS_THUMBNAIL (thumbnail),
+                        GIMP_THUMB_STATE_UNKNOWN);
+
+  GIMP_THUMB_DEBUG_CALL (thumbnail);
+
+  g_object_freeze_notify (G_OBJECT (thumbnail));
+
+  gimp_thumbnail_update_image (thumbnail);
+  gimp_thumbnail_update_thumb (thumbnail, size);
+
+  g_object_thaw_notify (G_OBJECT (thumbnail));
+
+  return thumbnail->thumb_state;
+}
+
+/**
+ * gimp_thumbnail_check_thumb:
+ * @thumbnail: a #GimpThumbnail object
+ * @size: the preferred size of the thumbnail image
+ *
+ * Checks if a thumbnail file for the @thumbnail exists, loads it and
+ * verifies it is valid and uptodate for the image file asosciated
+ * with the @thumbnail.
+ *
+ * Return value: the thumbnail's #GimpThumbState after the update
+ *
+ * Since: 2.2
+ **/
+GimpThumbState
+gimp_thumbnail_check_thumb (GimpThumbnail *thumbnail,
+                            GimpThumbSize  size)
+{
+  GdkPixbuf *pixbuf;
+
+  g_return_val_if_fail (GIMP_IS_THUMBNAIL (thumbnail), FALSE);
+
+  GIMP_THUMB_DEBUG_CALL (thumbnail);
+
+  if (gimp_thumbnail_peek_thumb (thumbnail, size) == GIMP_THUMB_STATE_OK)
+    return GIMP_THUMB_STATE_OK;
+
+  pixbuf = gimp_thumbnail_load_thumb (thumbnail, size, NULL);
+
+  if (pixbuf)
+    g_object_unref (pixbuf);
+
+  return thumbnail->thumb_state;
+}
+
+static void
+gimp_thumbnail_update_image (GimpThumbnail *thumbnail)
+{
+  GimpThumbState  state;
+  gint64          mtime    = 0;
+  gint64          filesize = 0;
+
+  if (! thumbnail->image_uri)
+    return;
+
+  state = thumbnail->image_state;
+
+  switch (state)
+    {
+    case GIMP_THUMB_STATE_UNKNOWN:
+      g_return_if_fail (thumbnail->image_filename == NULL);
+
+      thumbnail->image_filename =
+        _gimp_thumb_filename_from_uri (thumbnail->image_uri);
+
+      if (! thumbnail->image_filename)
+        state = GIMP_THUMB_STATE_REMOTE;
+
+      break;
+
+    case GIMP_THUMB_STATE_REMOTE:
+      break;
+
+    default:
+      g_return_if_fail (thumbnail->image_filename != NULL);
+      break;
+    }
+
+  switch (state)
+    {
+    case GIMP_THUMB_STATE_REMOTE:
+      break;
+
+    default:
+      switch (gimp_thumb_file_test (thumbnail->image_filename,
+                                    &mtime, &filesize,
+                                    &thumbnail->image_not_found_errno))
+        {
+        case GIMP_THUMB_FILE_TYPE_REGULAR:
+          state = GIMP_THUMB_STATE_EXISTS;
+          break;
+
+        case GIMP_THUMB_FILE_TYPE_FOLDER:
+          state = GIMP_THUMB_STATE_FOLDER;
+          break;
+
+        case GIMP_THUMB_FILE_TYPE_SPECIAL:
+          state = GIMP_THUMB_STATE_SPECIAL;
+          break;
+
+        default:
+          state = GIMP_THUMB_STATE_NOT_FOUND;
+          break;
+        }
+      break;
+    }
+
+  if (state != thumbnail->image_state)
+    {
+      g_object_set (thumbnail,
+                    "image-state", state,
+                    NULL);
+    }
+
+  if (mtime != thumbnail->image_mtime || filesize != thumbnail->image_filesize)
+    {
+      g_object_set (thumbnail,
+                    "image-mtime",    mtime,
+                    "image-filesize", filesize,
+                    NULL);
+
+      if (thumbnail->thumb_state == GIMP_THUMB_STATE_OK)
+        g_object_set (thumbnail,
+                      "thumb-state", GIMP_THUMB_STATE_OLD,
+                      NULL);
+    }
+}
+
+static void
+gimp_thumbnail_update_thumb (GimpThumbnail *thumbnail,
+                             GimpThumbSize  size)
+{
+  gchar          *filename;
+  GimpThumbState  state;
+  gint64          filesize = 0;
+  gint64          mtime    = 0;
+
+  if (! thumbnail->image_uri)
+    return;
+
+  state = thumbnail->thumb_state;
+
+  filename = gimp_thumb_find_thumb (thumbnail->image_uri, &size);
+
+  /* We don't want to clear the GIMP_THUMB_STATE_FAILED state, because
+   * it is normal to have no filename if thumbnail creation failed. */
+  if (state != GIMP_THUMB_STATE_FAILED && ! filename)
+    state = GIMP_THUMB_STATE_NOT_FOUND;
+
+  switch (state)
+    {
+    case GIMP_THUMB_STATE_EXISTS:
+    case GIMP_THUMB_STATE_OLD:
+    case GIMP_THUMB_STATE_OK:
+      g_return_if_fail (thumbnail->thumb_filename != NULL);
+
+      if (thumbnail->thumb_size     == size     &&
+          thumbnail->thumb_filesize == filesize &&
+          thumbnail->thumb_mtime    == mtime)
+        {
+          g_free (filename);
+          return;
+        }
+      break;
+    default:
+      break;
+    }
+
+  if (thumbnail->thumb_filename)
+    g_free (thumbnail->thumb_filename);
+
+  thumbnail->thumb_filename = filename;
+
+  if (filename)
+    state = (size > GIMP_THUMB_SIZE_FAIL ?
+             GIMP_THUMB_STATE_EXISTS : GIMP_THUMB_STATE_FAILED);
+
+  thumbnail->thumb_size     = size;
+  thumbnail->thumb_filesize = filesize;
+  thumbnail->thumb_mtime    = mtime;
+
+  if (state != thumbnail->thumb_state)
+    {
+      g_object_freeze_notify (G_OBJECT (thumbnail));
+
+      g_object_set (thumbnail, "thumb-state", state, NULL);
+      gimp_thumbnail_reset_info (thumbnail);
+
+      g_object_thaw_notify (G_OBJECT (thumbnail));
+    }
+}
+
+static void
+gimp_thumbnail_reset_info (GimpThumbnail *thumbnail)
+{
+  g_object_set (thumbnail,
+                "image-width",      0,
+                "image-height",     0,
+                "image-type",       NULL,
+                "image-num-layers", 0,
+                NULL);
+}
+
+static void
+gimp_thumbnail_set_info_from_pixbuf (GimpThumbnail *thumbnail,
+                                     GdkPixbuf     *pixbuf)
+{
+  const gchar  *option;
+  gint          num;
+
+  g_object_freeze_notify (G_OBJECT (thumbnail));
+
+  gimp_thumbnail_reset_info (thumbnail);
+
+  g_free (thumbnail->image_mimetype);
+  thumbnail->image_mimetype =
+    g_strdup (gdk_pixbuf_get_option (pixbuf, TAG_THUMB_MIMETYPE));
+
+  option = gdk_pixbuf_get_option (pixbuf, TAG_THUMB_IMAGE_WIDTH);
+  if (option && sscanf (option, "%d", &num) == 1)
+    thumbnail->image_width = num;
+
+  option = gdk_pixbuf_get_option (pixbuf, TAG_THUMB_IMAGE_HEIGHT);
+  if (option && sscanf (option, "%d", &num) == 1)
+    thumbnail->image_height = num;
+
+  thumbnail->image_type =
+    g_strdup (gdk_pixbuf_get_option (pixbuf, TAG_THUMB_GIMP_TYPE));
+
+  option = gdk_pixbuf_get_option (pixbuf, TAG_THUMB_GIMP_LAYERS);
+  if (option && sscanf (option, "%d", &num) == 1)
+    thumbnail->image_num_layers = num;
+
+  g_object_thaw_notify (G_OBJECT (thumbnail));
+}
+
+static gboolean
+gimp_thumbnail_save (GimpThumbnail  *thumbnail,
+                     GimpThumbSize   size,
+                     const gchar    *filename,
+                     GdkPixbuf      *pixbuf,
+                     const gchar    *software,
+                     GError        **error)
+{
+  const gchar  *keys[12];
+  gchar        *values[12];
+  gchar        *basename;
+  gchar        *dirname;
+  gchar        *tmpname;
+  gboolean      success;
+  gint          i = 0;
+
+  keys[i]   = TAG_DESCRIPTION;
+  values[i] = g_strdup_printf ("Thumbnail of %s",  thumbnail->image_uri);
+  i++;
+
+  keys[i]   = TAG_SOFTWARE;
+  values[i] = g_strdup (software);
+  i++;
+
+  keys[i]   = TAG_THUMB_URI;
+  values[i] = g_strdup (thumbnail->image_uri);
+  i++;
+
+  keys[i]   = TAG_THUMB_MTIME;
+  values[i] = g_strdup_printf ("%" G_GINT64_FORMAT, thumbnail->image_mtime);
+  i++;
+
+  keys[i]   = TAG_THUMB_FILESIZE;
+  values[i] = g_strdup_printf ("%" G_GINT64_FORMAT, thumbnail->image_filesize);
+  i++;
+
+  if (thumbnail->image_mimetype)
+    {
+      keys[i]   = TAG_THUMB_MIMETYPE;
+      values[i] = g_strdup (thumbnail->image_mimetype);
+      i++;
+    }
+
+  if (thumbnail->image_width > 0)
+    {
+      keys[i]   = TAG_THUMB_IMAGE_WIDTH;
+      values[i] = g_strdup_printf ("%d", thumbnail->image_width);
+      i++;
+    }
+
+  if (thumbnail->image_height > 0)
+    {
+      keys[i]   = TAG_THUMB_IMAGE_HEIGHT;
+      values[i] = g_strdup_printf ("%d", thumbnail->image_height);
+      i++;
+    }
+
+  if (thumbnail->image_type)
+    {
+      keys[i]   = TAG_THUMB_GIMP_TYPE;
+      values[i] = g_strdup (thumbnail->image_type);
+      i++;
+    }
+
+  if (thumbnail->image_num_layers > 0)
+    {
+      keys[i]   = TAG_THUMB_GIMP_LAYERS;
+      values[i] = g_strdup_printf ("%d", thumbnail->image_num_layers);
+      i++;
+    }
+
+  keys[i]   = NULL;
+  values[i] = NULL;
+
+  basename = g_path_get_basename (filename);
+  dirname  = g_path_get_dirname (filename);
+
+  tmpname = g_strdup_printf ("%s%cgimp-thumb-%d-%.8s",
+                             dirname, G_DIR_SEPARATOR, getpid (), basename);
+
+  g_free (dirname);
+  g_free (basename);
+
+  success = gdk_pixbuf_savev (pixbuf, tmpname, "png",
+                              (gchar **) keys, values,
+                              error);
+
+  for (i = 0; keys[i]; i++)
+    g_free (values[i]);
+
+  if (success)
+    {
+#ifdef GIMP_THUMB_DEBUG
+      g_printerr ("thumbnail saved to temporary file %s\n", tmpname);
+#endif
+
+      success = (g_rename (tmpname, filename) == 0);
+
+      if (! success)
+        g_set_error (error, G_FILE_ERROR, g_file_error_from_errno (errno),
+                     _("Could not create thumbnail for %s: %s"),
+                     thumbnail->image_uri, g_strerror (errno));
+    }
+
+  if (success)
+    {
+#ifdef GIMP_THUMB_DEBUG
+      g_printerr ("temporary thumbnail file renamed to %s\n", filename);
+#endif
+
+      success = (g_chmod (filename, 0600) == 0);
+
+      if (! success)
+        g_set_error (error, G_FILE_ERROR, g_file_error_from_errno (errno),
+                     "Could not set permissions of thumbnail for %s: %s",
+                     thumbnail->image_uri, g_strerror (errno));
+
+      g_object_freeze_notify (G_OBJECT (thumbnail));
+
+      gimp_thumbnail_update_thumb (thumbnail, size);
+
+      if (success &&
+          thumbnail->thumb_state == GIMP_THUMB_STATE_EXISTS &&
+          strcmp (filename, thumbnail->thumb_filename) == 0)
+        {
+          thumbnail->thumb_state = GIMP_THUMB_STATE_OK;
+        }
+
+      g_object_thaw_notify (G_OBJECT (thumbnail));
+    }
+
+  g_unlink (tmpname);
+  g_free (tmpname);
+
+  return success;
+}
+
+#ifdef GIMP_THUMB_DEBUG
+static void
+gimp_thumbnail_debug_notify (GObject    *object,
+                             GParamSpec *pspec)
+{
+  GValue       value = G_VALUE_INIT;
+  gchar       *str   = NULL;
+  const gchar *name;
+
+  g_value_init (&value, pspec->value_type);
+  g_object_get_property (object, pspec->name, &value);
+
+  if (G_VALUE_HOLDS_STRING (&value))
+    {
+      str = g_value_dup_string (&value);
+    }
+  else if (g_value_type_transformable (pspec->value_type, G_TYPE_STRING))
+    {
+      GValue  tmp = G_VALUE_INIT;
+
+      g_value_init (&tmp, G_TYPE_STRING);
+      g_value_transform (&value, &tmp);
+
+      str = g_value_dup_string (&tmp);
+
+      g_value_unset (&tmp);
+    }
+
+  g_value_unset (&value);
+
+  name = GIMP_THUMBNAIL (object)->image_uri;
+
+  g_printerr (" GimpThumb (%s) %s: %s\n",
+              name ? name : "(null)", pspec->name, str);
+
+  g_free (str);
+}
+#endif
+
+
+/**
+ * gimp_thumbnail_load_thumb:
+ * @thumbnail: a #GimpThumbnail object
+ * @size: the preferred #GimpThumbSize for the preview
+ * @error: return location for possible errors
+ *
+ * Attempts to load a thumbnail preview for the image associated with
+ * @thumbnail. Before you use this function you need need to set an
+ * image location using gimp_thumbnail_set_uri() or
+ * gimp_thumbnail_set_filename(). You can also peek at the thumb
+ * before loading it using gimp_thumbnail_peek_thumb.
+ *
+ * This function will return the best matching pixbuf for the
+ * specified @size. It returns the pixbuf as loaded from disk. It is
+ * left to the caller to scale it to the desired size. The returned
+ * pixbuf may also represent an outdated preview of the image file.
+ * In order to verify if the preview is uptodate, you should check the
+ * "thumb_state" property after calling this function.
+ *
+ * Return value: a preview pixbuf or %NULL if no thumbnail was found
+ **/
+GdkPixbuf *
+gimp_thumbnail_load_thumb (GimpThumbnail  *thumbnail,
+                           GimpThumbSize   size,
+                           GError        **error)
+{
+  GimpThumbState  state;
+  GdkPixbuf      *pixbuf;
+  const gchar    *option;
+  gint64          image_mtime;
+  gint64          image_size;
+
+  g_return_val_if_fail (GIMP_IS_THUMBNAIL (thumbnail), NULL);
+
+  GIMP_THUMB_DEBUG_CALL (thumbnail);
+
+  if (! thumbnail->image_uri)
+    return NULL;
+
+  state = gimp_thumbnail_peek_thumb (thumbnail, size);
+
+  if (state < GIMP_THUMB_STATE_EXISTS || state == GIMP_THUMB_STATE_FAILED)
+    return NULL;
+
+  pixbuf = gdk_pixbuf_new_from_file (thumbnail->thumb_filename, NULL);
+  if (! pixbuf)
+    return NULL;
+
+#ifdef GIMP_THUMB_DEBUG
+  g_printerr ("thumbnail loaded from %s\n", thumbnail->thumb_filename);
+#endif
+
+  g_object_freeze_notify (G_OBJECT (thumbnail));
+
+  /* URI and mtime from the thumbnail need to match our file */
+  option = gdk_pixbuf_get_option (pixbuf, TAG_THUMB_URI);
+  if (!option)
+    goto finish;
+
+  if (strcmp (option, thumbnail->image_uri))
+    {
+      /*  might be a local thumbnail, try if the local part matches  */
+      const gchar *baseuri = strrchr (thumbnail->image_uri, '/');
+
+      if (!baseuri || strcmp (option, baseuri))
+        goto finish;
+    }
+
+  state = GIMP_THUMB_STATE_OLD;
+
+  option = gdk_pixbuf_get_option (pixbuf, TAG_THUMB_MTIME);
+  if (!option || sscanf (option, "%" G_GINT64_FORMAT, &image_mtime) != 1)
+    goto finish;
+
+  option = gdk_pixbuf_get_option (pixbuf, TAG_THUMB_FILESIZE);
+  if (option && sscanf (option, "%" G_GINT64_FORMAT, &image_size) != 1)
+    goto finish;
+
+  /* TAG_THUMB_FILESIZE is optional but must match if present */
+  if (image_mtime == thumbnail->image_mtime &&
+      (option == NULL || image_size == thumbnail->image_filesize))
+    {
+      if (thumbnail->thumb_size == GIMP_THUMB_SIZE_FAIL)
+        state = GIMP_THUMB_STATE_FAILED;
+      else
+        state = GIMP_THUMB_STATE_OK;
+    }
+
+  if (state == GIMP_THUMB_STATE_FAILED)
+    gimp_thumbnail_reset_info (thumbnail);
+  else
+    gimp_thumbnail_set_info_from_pixbuf (thumbnail, pixbuf);
+
+ finish:
+  if (thumbnail->thumb_size == GIMP_THUMB_SIZE_FAIL ||
+      (state != GIMP_THUMB_STATE_OLD && state != GIMP_THUMB_STATE_OK))
+    {
+      g_object_unref (pixbuf);
+      pixbuf = NULL;
+    }
+
+  g_object_set (thumbnail,
+                "thumb-state", state,
+                NULL);
+
+  g_object_thaw_notify (G_OBJECT (thumbnail));
+
+  return pixbuf;
+}
+
+/**
+ * gimp_thumbnail_save_thumb:
+ * @thumbnail: a #GimpThumbnail object
+ * @pixbuf: a #GdkPixbuf representing the preview thumbnail
+ * @software: a string describing the software saving the thumbnail
+ * @error: return location for possible errors
+ *
+ * Saves a preview thumbnail for the image associated with @thumbnail.
+ * to the global thumbnail repository.
+ *
+ * The caller is responsible for setting the image file location, it's
+ * filesize, modification time. One way to set this info is to is to
+ * call gimp_thumbnail_set_uri() followed by gimp_thumbnail_peek_image().
+ * Since this won't work for remote images, it is left to the user of
+ * gimp_thumbnail_save_thumb() to do this or to set the information
+ * using the @thumbnail object properties.
+ *
+ * The image format type and the number of layers can optionally be
+ * set in order to be stored with the preview image.
+ *
+ * Return value: %TRUE if a thumbnail was successfully written,
+ *               %FALSE otherwise
+ **/
+gboolean
+gimp_thumbnail_save_thumb (GimpThumbnail  *thumbnail,
+                           GdkPixbuf      *pixbuf,
+                           const gchar    *software,
+                           GError        **error)
+{
+  GimpThumbSize  size;
+  gchar         *name;
+  gboolean       success;
+
+  g_return_val_if_fail (GIMP_IS_THUMBNAIL (thumbnail), FALSE);
+  g_return_val_if_fail (thumbnail->image_uri != NULL, FALSE);
+  g_return_val_if_fail (GDK_IS_PIXBUF (pixbuf), FALSE);
+  g_return_val_if_fail (software != NULL, FALSE);
+  g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
+
+  GIMP_THUMB_DEBUG_CALL (thumbnail);
+
+  size = MAX (gdk_pixbuf_get_width (pixbuf), gdk_pixbuf_get_height (pixbuf));
+  if (size < 1)
+    return TRUE;
+
+  name = gimp_thumb_name_from_uri (thumbnail->image_uri, size);
+  if (! name)
+    return TRUE;
+
+  if (! gimp_thumb_ensure_thumb_dir (size, error))
+    {
+      g_free (name);
+      return FALSE;
+    }
+
+  success = gimp_thumbnail_save (thumbnail,
+                                 size, name, pixbuf, software,
+                                 error);
+  g_free (name);
+
+  return success;
+}
+
+/**
+ * gimp_thumbnail_save_thumb_local:
+ * @thumbnail: a #GimpThumbnail object
+ * @pixbuf: a #GdkPixbuf representing the preview thumbnail
+ * @software: a string describing the software saving the thumbnail
+ * @error: return location for possible errors
+ *
+ * Saves a preview thumbnail for the image associated with @thumbnail
+ * to the local thumbnail repository. Local thumbnails have been added
+ * with version 0.7 of the spec.
+ *
+ * Please see also gimp_thumbnail_save_thumb(). The notes made there
+ * apply here as well.
+ *
+ * Return value: %TRUE if a thumbnail was successfully written,
+ *               %FALSE otherwise
+ *
+ * Since: 2.2
+ **/
+gboolean
+gimp_thumbnail_save_thumb_local (GimpThumbnail  *thumbnail,
+                                 GdkPixbuf      *pixbuf,
+                                 const gchar    *software,
+                                 GError        **error)
+{
+  GimpThumbSize  size;
+  gchar         *name;
+  gchar         *filename;
+  gchar         *dirname;
+  gboolean       success;
+
+  g_return_val_if_fail (GIMP_IS_THUMBNAIL (thumbnail), FALSE);
+  g_return_val_if_fail (thumbnail->image_uri != NULL, FALSE);
+  g_return_val_if_fail (GDK_IS_PIXBUF (pixbuf), FALSE);
+  g_return_val_if_fail (software != NULL, FALSE);
+  g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
+
+  GIMP_THUMB_DEBUG_CALL (thumbnail);
+
+  size = MAX (gdk_pixbuf_get_width (pixbuf), gdk_pixbuf_get_height (pixbuf));
+  if (size < 1)
+    return TRUE;
+
+  filename = _gimp_thumb_filename_from_uri (thumbnail->image_uri);
+  if (! filename)
+    return TRUE;
+
+  dirname = g_path_get_dirname (filename);
+  g_free (filename);
+
+  name = gimp_thumb_name_from_uri_local (thumbnail->image_uri, size);
+  if (! name)
+    {
+      g_free (dirname);
+      return TRUE;
+    }
+
+  if (! gimp_thumb_ensure_thumb_dir_local (dirname, size, error))
+    {
+      g_free (name);
+      g_free (dirname);
+      return FALSE;
+    }
+
+  g_free (dirname);
+
+  success = gimp_thumbnail_save (thumbnail,
+                                 size, name, pixbuf, software,
+                                 error);
+  g_free (name);
+
+  return success;
+}
+
+/**
+ * gimp_thumbnail_save_failure:
+ * @thumbnail: a #GimpThumbnail object
+ * @software: a string describing the software saving the thumbnail
+ * @error: return location for possible errors
+ *
+ * Saves a failure thumbnail for the image associated with
+ * @thumbnail. This is an empty pixbuf that indicates that an attempt
+ * to create a preview for the image file failed. It should be used to
+ * prevent the software from further attempts to create this thumbnail.
+ *
+ * Return value: %TRUE if a failure thumbnail was successfully written,
+ *               %FALSE otherwise
+ **/
+gboolean
+gimp_thumbnail_save_failure (GimpThumbnail  *thumbnail,
+                             const gchar    *software,
+                             GError        **error)
+{
+  GdkPixbuf *pixbuf;
+  gchar     *name;
+  gchar     *desc;
+  gchar     *time_str;
+  gchar     *size_str;
+  gboolean   success;
+
+  g_return_val_if_fail (GIMP_IS_THUMBNAIL (thumbnail), FALSE);
+  g_return_val_if_fail (thumbnail->image_uri != NULL, FALSE);
+  g_return_val_if_fail (software != NULL, FALSE);
+
+  GIMP_THUMB_DEBUG_CALL (thumbnail);
+
+  name = gimp_thumb_name_from_uri (thumbnail->image_uri, GIMP_THUMB_SIZE_FAIL);
+  if (! name)
+    return TRUE;
+
+  if (! gimp_thumb_ensure_thumb_dir (GIMP_THUMB_SIZE_FAIL, error))
+    {
+      g_free (name);
+      return FALSE;
+    }
+
+  pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, FALSE, 8, 1, 1);
+
+  desc = g_strdup_printf ("Thumbnail failure for %s", thumbnail->image_uri);
+  time_str = g_strdup_printf ("%" G_GINT64_FORMAT, thumbnail->image_mtime);
+  size_str = g_strdup_printf ("%" G_GINT64_FORMAT, thumbnail->image_filesize);
+
+  success = gdk_pixbuf_save (pixbuf, name, "png", error,
+                             TAG_DESCRIPTION,    desc,
+                             TAG_SOFTWARE,       software,
+                             TAG_THUMB_URI,      thumbnail->image_uri,
+                             TAG_THUMB_MTIME,    time_str,
+                             TAG_THUMB_FILESIZE, size_str,
+                             NULL);
+  if (success)
+    {
+      success = (g_chmod (name, 0600) == 0);
+
+      if (success)
+        gimp_thumbnail_update_thumb (thumbnail, GIMP_THUMB_SIZE_NORMAL);
+      else
+        g_set_error (error, G_FILE_ERROR, g_file_error_from_errno (errno),
+                     "Could not set permissions of thumbnail '%s': %s",
+                     name, g_strerror (errno));
+    }
+
+  g_object_unref (pixbuf);
+
+  g_free (size_str);
+  g_free (time_str);
+  g_free (desc);
+  g_free (name);
+
+  return success;
+}
+
+/**
+ * gimp_thumbnail_delete_failure:
+ * @thumbnail: a #GimpThumbnail object
+ *
+ * Removes a failure thumbnail if one exists. This function should be
+ * used after a thumbnail has been successfully created.
+ *
+ * Since: 2.2
+ **/
+void
+gimp_thumbnail_delete_failure (GimpThumbnail *thumbnail)
+{
+  gchar *filename;
+
+  g_return_if_fail (GIMP_IS_THUMBNAIL (thumbnail));
+  g_return_if_fail (thumbnail->image_uri != NULL);
+
+  GIMP_THUMB_DEBUG_CALL (thumbnail);
+
+  filename = gimp_thumb_name_from_uri (thumbnail->image_uri,
+                                       GIMP_THUMB_SIZE_FAIL);
+  if (filename)
+    {
+      g_unlink (filename);
+      g_free (filename);
+    }
+}
+
+/**
+ * gimp_thumbnail_delete_others:
+ * @thumbnail: a #GimpThumbnail object
+ * @size: the thumbnail size which should not be deleted
+ *
+ * Removes all other thumbnails from the global thumbnail
+ * repository. Only the thumbnail for @size is not deleted.  This
+ * function should be used after a thumbnail has been successfully
+ * updated. See the spec for a more detailed description on when to
+ * delete thumbnails.
+ *
+ * Since: 2.2
+ **/
+void
+gimp_thumbnail_delete_others (GimpThumbnail *thumbnail,
+                              GimpThumbSize  size)
+{
+  g_return_if_fail (GIMP_IS_THUMBNAIL (thumbnail));
+  g_return_if_fail (thumbnail->image_uri != NULL);
+
+  GIMP_THUMB_DEBUG_CALL (thumbnail);
+
+  _gimp_thumbs_delete_others (thumbnail->image_uri, size);
+}
+
+/**
+ * gimp_thumbnail_has_failed:
+ * @thumbnail: a #GimpThumbnail object
+ *
+ * Checks if a valid failure thumbnail for the given thumbnail exists
+ * in the global thumbnail repository. This may be the case even if
+ * gimp_thumbnail_peek_thumb() doesn't return %GIMP_THUMB_STATE_FAILED
+ * since there might be a real thumbnail and a failure thumbnail for
+ * the same image file.
+ *
+ * The application should not attempt to create the thumbnail if a
+ * valid failure thumbnail exists.
+ *
+ * Return value: %TRUE if a failure thumbnail exists or
+ *
+ * Since: 2.2
+ **/
+gboolean
+gimp_thumbnail_has_failed (GimpThumbnail *thumbnail)
+{
+  GdkPixbuf   *pixbuf;
+  const gchar *option;
+  gchar       *filename;
+  gint64       image_mtime;
+  gint64       image_size;
+  gboolean     failed = FALSE;
+
+  g_return_val_if_fail (GIMP_IS_THUMBNAIL (thumbnail), FALSE);
+  g_return_val_if_fail (thumbnail->image_uri != NULL, FALSE);
+
+  GIMP_THUMB_DEBUG_CALL (thumbnail);
+
+  filename = gimp_thumb_name_from_uri (thumbnail->image_uri,
+                                       GIMP_THUMB_SIZE_FAIL);
+  if (! filename)
+    return FALSE;
+
+  pixbuf = gdk_pixbuf_new_from_file (filename, NULL);
+  g_free (filename);
+
+  if (! pixbuf)
+    return FALSE;
+
+  if (gimp_thumbnail_peek_image (thumbnail) < GIMP_THUMB_STATE_EXISTS)
+    goto finish;
+
+  /* URI and mtime from the thumbnail need to match our file */
+  option = gdk_pixbuf_get_option (pixbuf, TAG_THUMB_URI);
+  if (! option || strcmp (option, thumbnail->image_uri))
+    goto finish;
+
+  option = gdk_pixbuf_get_option (pixbuf, TAG_THUMB_MTIME);
+  if (!option || sscanf (option, "%" G_GINT64_FORMAT, &image_mtime) != 1)
+    goto finish;
+
+  option = gdk_pixbuf_get_option (pixbuf, TAG_THUMB_FILESIZE);
+  if (option && sscanf (option, "%" G_GINT64_FORMAT, &image_size) != 1)
+    goto finish;
+
+  /* TAG_THUMB_FILESIZE is optional but must match if present */
+  if (image_mtime == thumbnail->image_mtime &&
+      (option == NULL || image_size == thumbnail->image_filesize))
+    {
+      failed = TRUE;
+    }
+
+ finish:
+  g_object_unref (pixbuf);
+
+  return failed;
+}
diff --git a/libgimpthumb/gimpthumbnail.h b/libgimpthumb/gimpthumbnail.h
new file mode 100644
index 0000000..2099ff0
--- /dev/null
+++ b/libgimpthumb/gimpthumbnail.h
@@ -0,0 +1,135 @@
+/* LIBGIMP - The GIMP Library
+ * Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
+ *
+ * Thumbnail handling according to the Thumbnail Managing Standard.
+ * https://specifications.freedesktop.org/thumbnail-spec/
+ *
+ * Copyright (C) 2001-2004  Sven Neumann <sven@gimp.org>
+ *                          Michael Natterer <mitch@gimp.org>
+ *
+ * This library is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library.  If not, see
+ * <https://www.gnu.org/licenses/>.
+ */
+
+#if !defined (__GIMP_THUMB_H_INSIDE__) && !defined (GIMP_THUMB_COMPILATION)
+#error "Only <libgimpthumb/gimpthumb.h> can be included directly."
+#endif
+
+#ifndef __GIMP_THUMBNAIL_H__
+#define __GIMP_THUMBNAIL_H__
+
+G_BEGIN_DECLS
+
+
+#define GIMP_TYPE_THUMBNAIL            (gimp_thumbnail_get_type ())
+#define GIMP_THUMBNAIL(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), GIMP_TYPE_THUMBNAIL, GimpThumbnail))
+#define GIMP_THUMBNAIL_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), GIMP_TYPE_THUMBNAIL, GimpThumbnailClass))
+#define GIMP_IS_THUMBNAIL(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GIMP_TYPE_THUMBNAIL))
+#define GIMP_IS_THUMBNAIL_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GIMP_TYPE_THUMBNAIL))
+#define GIMP_THUMBNAIL_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), GIMP_TYPE_THUMBNAIL, GimpThumbnailClass))
+
+
+typedef struct _GimpThumbnailClass GimpThumbnailClass;
+
+/**
+ * GimpThumbnail:
+ *
+ * All members of #GimpThumbnail are private and should only be accessed
+ * using object properties.
+ **/
+struct _GimpThumbnail
+{
+  GObject         parent_instance;
+
+  /*< private >*/
+  GimpThumbState  image_state;
+  gchar          *image_uri;
+  gchar          *image_filename;
+  gint64          image_filesize;
+  gint64          image_mtime;
+  gint            image_not_found_errno;
+  gint            image_width;
+  gint            image_height;
+  gchar          *image_type;
+  gint            image_num_layers;
+
+  GimpThumbState  thumb_state;
+  GimpThumbSize   thumb_size;
+  gchar          *thumb_filename;
+  gint64          thumb_filesize;
+  gint64          thumb_mtime;
+
+  gchar          *image_mimetype;
+
+  gpointer        _reserved_2;
+};
+
+struct _GimpThumbnailClass
+{
+  GObjectClass    parent_class;
+
+  /* Padding for future expansion */
+  void (* _gimp_reserved1) (void);
+  void (* _gimp_reserved2) (void);
+  void (* _gimp_reserved3) (void);
+  void (* _gimp_reserved4) (void);
+};
+
+
+GType            gimp_thumbnail_get_type         (void) G_GNUC_CONST;
+
+GimpThumbnail  * gimp_thumbnail_new              (void);
+
+void             gimp_thumbnail_set_uri          (GimpThumbnail  *thumbnail,
+                                                  const gchar    *uri);
+gboolean         gimp_thumbnail_set_filename     (GimpThumbnail  *thumbnail,
+                                                  const gchar    *filename,
+                                                  GError        **error);
+gboolean         gimp_thumbnail_set_from_thumb   (GimpThumbnail  *thumbnail,
+                                                  const gchar    *filename,
+                                                  GError        **error);
+
+GimpThumbState   gimp_thumbnail_peek_image       (GimpThumbnail  *thumbnail);
+GimpThumbState   gimp_thumbnail_peek_thumb       (GimpThumbnail  *thumbnail,
+                                                  GimpThumbSize   size);
+
+GimpThumbState   gimp_thumbnail_check_thumb      (GimpThumbnail  *thumbnail,
+                                                  GimpThumbSize   size);
+
+GdkPixbuf      * gimp_thumbnail_load_thumb       (GimpThumbnail  *thumbnail,
+                                                  GimpThumbSize   size,
+                                                  GError        **error);
+
+gboolean         gimp_thumbnail_save_thumb       (GimpThumbnail  *thumbnail,
+                                                  GdkPixbuf      *pixbuf,
+                                                  const gchar    *software,
+                                                  GError        **error);
+gboolean         gimp_thumbnail_save_thumb_local (GimpThumbnail  *thumbnail,
+                                                  GdkPixbuf      *pixbuf,
+                                                  const gchar    *software,
+                                                  GError        **error);
+
+gboolean         gimp_thumbnail_save_failure     (GimpThumbnail  *thumbnail,
+                                                  const gchar    *software,
+                                                  GError        **error);
+void             gimp_thumbnail_delete_failure   (GimpThumbnail  *thumbnail);
+void             gimp_thumbnail_delete_others    (GimpThumbnail  *thumbnail,
+                                                  GimpThumbSize   size);
+
+gboolean         gimp_thumbnail_has_failed       (GimpThumbnail  *thumbnail);
+
+
+G_END_DECLS
+
+#endif /* __GIMP_THUMBNAIL_H__ */