CSS tweaks for icons in the Navigation block

.gitignore

@@ -8,3 +8,6 @@ ehthumbs.db
 Thumbs.db
 *.psd
 *.bak
+quickpush.sh
+/node_modules
+/style/*.map

Gruntfile.js

@@ -0,0 +1,279 @@
+/**
+ * Gruntfile for compiling theme_essential .less files.
+ *
+ * This file configures tasks to be run by Grunt
+ * http://gruntjs.com/ for the current theme.
+ *
+ *
+ * Requirements:
+ * -------------
+ * nodejs, npm, grunt-cli.
+ *
+ * Installation:
+ * -------------
+ * node and npm: instructions at http://nodejs.org/
+ *
+ * grunt-cli: `[sudo] npm install -g grunt-cli`
+ *
+ * node dependencies: run `npm install` in the root directory.
+ *
+ *
+ * Usage:
+ * ------
+ * Call tasks from the theme root directory. Default behaviour
+ * (calling only `grunt`) is to run the watch task detailed below.
+ *
+ *
+ * Porcelain tasks:
+ * ----------------
+ * The nice user interface intended for everyday use. Provide a
+ * high level of automation and convenience for specific use-cases.
+ *
+ * grunt watch   Watch the less directory (and all subdirectories)
+ *               for changes to *.less files then on detection
+ *               run 'grunt compile'
+ *
+ *               Options:
+ *
+ *               --dirroot=<path>  Optional. Explicitly define the
+ *                                 path to your Moodle root directory
+ *                                 when your theme is not in the
+ *                                 standard location.
+ * grunt compile Run the .less files through the compiler, create the
+ *               RTL version of the output, then run decache so that
+ *               the results can be seen on the next page load.
+ *
+ *               Options:
+ *
+ *               --dirroot=<path>  Optional. Explicitly define the
+ *                                 path to your Moodle root directory
+ *                                 when your theme is not in the
+ *                                 standard location.
+ *
+ *               --urlprefix=<path> Optional. Explicitly define
+ *                                  the path between the domain
+ *                                  and the installation in the
+ *                                  URL, i.e. /moodle27 being:
+ *                                  --urlprefix=/moodle27
+ *
+ * Plumbing tasks & targets:
+ * -------------------------
+ * Lower level tasks encapsulating a specific piece of functionality
+ * but usually only useful when called in combination with another.
+ *
+ * grunt less         Compile all less files.
+ *
+ * grunt less:essential Compile Essential less files.
+ *
+ * grunt decache      Clears the Moodle theme cache.
+ *
+ *                    Options:
+ *
+ *                    --dirroot=<path>  Optional. Explicitly define
+ *                                      the path to your Moodle root
+ *                                      directory when your theme is
+ *                                      not in the standard location.
+ *
+ * grunt replace             Run all text replace tasks.
+ *
+ * grunt svg                 Change the colour of the SVGs in pix_core by
+ *                           text replacing #999999 with a new hex colour.
+ *                           Note this requires the SVGs to be #999999 to
+ *                           start with or the replace will do nothing
+ *                           so should usually be preceded by copying
+ *                           a fresh set of the original SVGs.
+ *
+ *                           Options:
+ *
+ *                           --svgcolour=<hexcolour> Hex colour to use for SVGs
+ *
+ * grunt cssflip    Create essential-rtl.css by flipping the direction styles
+ *                  in essential.css.
+ *
+ *
+ * @package theme
+ * @subpackage shoehorn
+ * @author G J Barnard - gjbarnard at gmail dot com and {@link http://moodle.org/user/profile.php?id=442195}
+
+
+ * @author Based on code originally written by Joby Harding, Bas Brands, David Scotson and many other contributors. * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+module.exports = function(grunt) {
+
+    // Import modules.
+    var path = require('path');
+
+    // Theme Bootstrap constants.
+    var LESSDIR         = 'less',
+        MOODLEURLPREFIX = grunt.option('urlprefix') || '',
+        THEMEDIR        = path.basename(path.resolve('.'));
+
+    // PHP strings for exec task.
+    var moodleroot = path.dirname(path.dirname(__dirname)),
+        configfile = '',
+        decachephp = '',
+        dirrootopt = grunt.option('dirroot') || process.env.MOODLE_DIR || '';
+
+    // Allow user to explicitly define Moodle root dir.
+    if ('' !== dirrootopt) {
+        moodleroot = path.resolve(dirrootopt);
+    }
+
+    configfile = path.join(moodleroot, 'config.php');
+
+    decachephp += 'define(\'CLI_SCRIPT\', true);';
+    decachephp += 'require(\'' + configfile  + '\');';
+    decachephp += 'theme_reset_all_caches();';
+
+    var svgcolour = grunt.option('svgcolour') || '#999999';
+
+    grunt.initConfig({
+        less: {
+            moodle: {
+                options: {
+                    compress: false,
+                    cleancss: true,
+                    paths: "./less",
+                    report: 'min',
+                },
+                src: 'less/moodle.less',
+                dest: 'style/moodle.css'
+            },
+            // Compile essential styles.
+            essential: {
+                options: {
+                    cleancss: true,
+                    compress: false,
+                    paths: "./less",
+                    report: 'min',
+                    sourceMap: false,
+                    sourceMapRootpath: MOODLEURLPREFIX + '/theme/' + THEMEDIR,
+                    sourceMapFilename: 'style/essential.treasure.map'
+                },
+                src: 'less/essential.less',
+                dest: 'style/essential.css'
+            },
+            alternative: {
+                options: {
+                    compress: true,
+                    cleancss: true,
+                    paths: "./less",
+                    report: 'min',
+                    sourceMap: false,
+                    sourceMapRootpath: MOODLEURLPREFIX + '/theme/' + THEMEDIR,
+                    sourceMapFilename: 'style/alternative.treasure.map'
+                },
+                src: 'less/alternative.less',
+                dest: 'style/alternative.css'
+            }
+        },
+        exec: {
+            decache: {
+                cmd: 'php -r "' + decachephp + '"',
+                callback: function(error, stdout, stderror) {
+                    // exec will output error messages
+                    // just add one to confirm success.
+                    if (!error) {
+                        grunt.log.writeln("Moodle theme cache reset.");
+                    }
+                }
+            }
+        },
+        watch: {
+            // Watch for any changes to less files and compile.
+            files: ["less/**/*.less"],
+            tasks: ["compile"],
+            options: {
+                spawn: false
+            }
+        },
+        cssflip: {
+            options: {
+            compress: true
+          },
+            rtl: {
+                src:  'style/essential.css',
+                dest: 'style/essential-rtl.css'
+            }
+        },
+        copy: {
+            svg_core: {
+                 expand: true,
+                 cwd:  'pix_core_originals/',
+                 src:  '**',
+                 dest: 'pix_core/',
+            },
+            svg_plugins: {
+                 expand: true,
+                 cwd:  'pix_plugins_originals/',
+                 src:  '**',
+                 dest: 'pix_plugins/',
+            }
+        },
+        replace: {
+            svg_colours_core: {
+                src: 'pix_core/**/*.svg',
+                    overwrite: true,
+                    replacements: [{
+                        from: '#999999',
+                        to: svgcolour
+                    }]
+            },
+            svg_colours_plugins: {
+                src: 'pix_plugins/**/*.svg',
+                    overwrite: true,
+                    replacements: [{
+                        from: '#999999',
+                        to: svgcolour
+                    }]
+            }
+        },
+        svgmin: {
+            options: {
+                plugins: [{
+                    removeViewBox: false
+                }, {
+                    removeUselessStrokeAndFill: false
+                }, {
+                    convertPathData: { 
+                        straightCurves: false
+                   }
+                }]
+            },
+            dist: {
+                files: [{
+                    expand: true,
+                    cwd: 'pix_core',
+                    src: ['**/*.svg'],
+                    dest: 'pix_core/',
+                    ext: '.svg'
+                }, {
+                    expand: true,
+                    cwd: 'pix_plugins',
+                    src: ['**/*.svg'],
+                    dest: 'pix_plugins/',
+                    ext: '.svg'
+                }]
+            }
+        }
+    });
+
+    // Load contrib tasks.
+    grunt.loadNpmTasks("grunt-contrib-less");
+    grunt.loadNpmTasks("grunt-contrib-watch");
+    grunt.loadNpmTasks("grunt-exec");
+    grunt.loadNpmTasks("grunt-text-replace");
+    grunt.loadNpmTasks("grunt-css-flip");
+    grunt.loadNpmTasks('grunt-contrib-copy');
+    grunt.loadNpmTasks('grunt-svgmin');
+
+    // Register tasks.
+    grunt.registerTask("default", ["watch"]);
+    grunt.registerTask("decache", ["exec:decache"]);
+
+    grunt.registerTask("compile", ["less", "cssflip", "decache"]);
+    grunt.registerTask("copy:svg", ["copy:svg_core", "copy:svg_plugins"]);
+    grunt.registerTask("replace:svg_colours", ["replace:svg_colours_core", "replace:svg_colours_plugins"]);
+    grunt.registerTask("svg", ["copy:svg", "replace:svg_colours", "svgmin"]);
+};