[gimp/ell/blending-mode-icons: 7/11] icons: auto-generate blending mode icons for the Color theme

[N/A <ell src gnome org>]

commit f884ef5db789e1733f23b6a832ee8dbf05767c65
Author: Ell <ell_se yahoo com>
Date:   Sun Jan 1 16:18:28 2017 -0500

    icons: auto-generate blending mode icons for the Color theme

 icons/Color/Makefile.am |   22 ++++++++++++++++++++++
 1 files changed, 22 insertions(+), 0 deletions(-)
---
diff --git a/icons/Color/Makefile.am b/icons/Color/Makefile.am
index c6c4480..39a56a4 100644
--- a/icons/Color/Makefile.am
+++ b/icons/Color/Makefile.am
@@ -15,6 +15,28 @@ include $(top_srcdir)/icons/icon-list.mk
 #      SVG=`$(top_srcdir)/tools/extract-vector-icon.sh $< $*` && \
 #      echo $${SVG} > $@
 
+# The blending mode icons are auto-generated from the Symbolic icons, by
+# overlaying a white version of the corresponding symbolic icon on top of the
+# blending-mode icon backdrop (gimp-mode-backdrop.{svg,png} in this theme).
+MAKE_SVG_MODE_ICON = \
+       mkdir -p `dirname $@` && \
+       (sed    '/<\/metadata>/q' $< && \
+        sed    '1,/<\/metadata>/d;/<\/svg>/Q' `dirname $< | sed 
's/\bSymbolic\b/Color/'`/gimp-mode-backdrop.svg && \
+        sed -r '1,/<\/metadata>/d;s/\#[[:xdigit:]]{6}\b/\#ffffff/g' $<) > $@
+
+scalable/gimp-%-mode.svg: ../Symbolic/scalable/gimp-%-mode.svg scalable/gimp-mode-backdrop.svg
+       $(MAKE_SVG_MODE_ICON)
+
+MAKE_MODE_ICON = \
+       mkdir -p `dirname $@` && \
+       GEGL_USE_OPENCL=no GEGL_SWAP=ram $(GEGL) -o $@ -- \
+       over input=[ png-load path=`dirname $< | sed 's/\bSymbolic\b/Color/'`/gimp-mode-backdrop.png ] \
+            aux=[ load path=$< levels out-low=1 ] \
+            srgb=true
+
+16/gimp-%-mode.png: ../Symbolic/16/gimp-%-mode.png 16/gimp-mode-backdrop.png
+       $(MAKE_MODE_ICON)
+
 ## Compiled-in icons for both the core and libgimpwidgets
 
 CORE_IMAGES = \