modify build system to generate .png files from .svg files, with one

.svg as an example.

xwords4/android/XWords4/.gitignore

@@ -6,3 +6,4 @@ gen
 libs
 proguard.cfg
 obj
+res/drawable*/*gen.png

xwords4/android/XWords4/build.xml

@@ -54,6 +54,10 @@
         <exec dir="." executable="../scripts/ndkbuild.sh" output="/dev/null">
             <arg value="clean"/>
         </exec>
+
+        <exec dir="." executable="../scripts/mkimages.sh" failonerror="true">
+            <arg value="--clean"/>
+        </exec>
       </target>
 
     <target name="-pre-build">
@@ -65,6 +69,8 @@
             <arg value="CHAT_ENABLED=${CHAT_ENABLED}" />
         </exec>
 
+        <exec dir="." executable="../scripts/mkimages.sh" failonerror="true"/>
+
         <exec dir="." executable="../scripts/gen_gcmid.sh"
               output="src/org/eehouse/android/xw4/GCMConsts.java"
               logError="true"

xwords4/android/XWords4/img_src/new_group.svg

@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
+<svg version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="120"
+	 height="120" xml:space="preserve">
+<g
+     id="g12"
+     transform="matrix(1.25,0,0,-1.25,0,120)">
+<g id='g1388' transform='translate(66.77,29.35)'>
+  <path id='path1390' d='M 0,0 0,13.3 -4.16,13.3 -4.16,0 -17.26,0 -17.26,-4.162 -4.16,-4.162 -4.16,-17.46 0,-17.46 0,-4.162 13.11,-4.162 13.11,0 0,0 z' style='fill:#000000;fill-opacity:1;fill-rule:nonzero;stroke:none'/>
+</g><g id='g1392'>
+  <g id='g1394'>
+    <g id='g1400' transform='translate(33.31,41.18)'>
+      <path id='path1402' d='M 0,0 -2.713,2.713 16.38,21.81 19.09,19.09 0,0 z M -8.74,8.739 10.47,27.95 13.18,25.24 -6.027,6.024 -8.74,8.739 z M -10.61,-4.437 C -11.92,-4.437 -12.97,-3.381 -12.97,-2.08 -12.97,-0.778 -11.92,0.277 -10.61,0.277 -9.311,0.277 -8.256,-0.778 -8.256,-2.08 -8.256,-3.381 -9.311,-4.437 -10.61,-4.437 M 10.82,39.59 -17.15,11.85 -17.19,-8.752 3.41,-8.703 31.38,19.04 10.82,39.59 z' style='fill:#000000;fill-opacity:1;fill-rule:nonzero;stroke:none'/>
+    </g>
+    <g id='g1404' transform='translate(32.95,84.1)'>
+      <path id='path1406' d='M 0,0 -12.49,-23.01 7.558,-3.594 0,0 z' style='fill:#000000;fill-opacity:1;fill-rule:nonzero;stroke:none'/>
+    </g>
+  </g>
+</g></g>
+</svg>

xwords4/android/XWords4/res/menu/games_list_menu.xml

@@ -25,7 +25,8 @@
           />
     <item android:id="@+id/gamel_menu_newgroup"
           android:title="@string/button_new_group"
-          android:icon="@drawable/content_new"
+          android:icon="@drawable/new_group__gen"
+          android:showAsAction="ifRoom"
           />
     <item android:id="@+id/gamel_menu_prefs"
           android:title="@string/menu_prefs"

xwords4/android/scripts/images.mk

@@ -0,0 +1,20 @@
+# -*- mode: Makefile -*-
+
+IMG_SRC = ./img_src
+IMG_DEST = res
+
+# $(IMG_DEST)/drawable/%_gen.png:
+# 	pwd
+# 	touch $@
+
+# $(IMG_DEST)/drawable/%_gen.png: $(IMG_SRC)/%.svg
+# 	convert -extent 48x48 $< $@
+
+$(IMG_DEST)/drawable-xhdpi/%__gen.png: $(IMG_SRC)/%.svg
+	convert -negate -scale 64x64 $< $@
+
+$(IMG_DEST)/drawable-mdpi/%__gen.png: $(IMG_SRC)/%.svg
+	convert -negate -scale 32x32 $< $@
+
+$(IMG_DEST)/drawable-hdpi/%__gen.png: $(IMG_SRC)/%.svg
+	convert -negate -scale 48x48 $< $@

xwords4/android/scripts/mkimages.sh

@@ -0,0 +1,34 @@
+#!/bin/bash
+
+set -e -u
+
+if [ ! -e build.xml ]; then
+    echo "no build.xml; please run from root of source tree"
+    exit 1
+fi
+
+CLEAN=""
+
+if [ $# -gt 1 ]; then
+    if [ $1 = '--clean' ]; then
+        CLEAN=1
+    fi
+fi
+
+# There needs to be target in the makefile for each of these (giving
+# the output .png size)
+
+TARGET_DIRS="drawable-hdpi drawable-mdpi drawable-xhdpi"
+
+
+for SVG in img_src/*.svg; do
+    for DIR in $TARGET_DIRS; do
+        SVG=$(basename $SVG)
+        OUT=res/$DIR/${SVG/.svg/__gen.png}
+        if [ -z "$CLEAN" ]; then
+            make -f $(dirname $0)/images.mk $OUT
+        else
+            rm -f $OUT
+        fi
+    done
+done