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assets/webapps/camera.gaiamobile.org/bower_components/font-fit/font-fit.js

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+;
+(function (define) {
+    define([
+        'require',
+        'exports',
+        'module'
+    ], function (require, exports, module) {
+        'use strict';
+        var debug = 0 ? console.log.bind(console) : function () {
+        };
+        var cache = {};
+        var MIN = 16;
+        var MAX = 24;
+        var BUFFER = 3;
+        module.exports = function (config) {
+            debug('font fit', config);
+            var space = config.space - BUFFER;
+            var min = config.min || MIN;
+            var max = config.max || MAX;
+            var text = trim(config.text);
+            var fontSize = max;
+            var textWidth;
+            var font;
+            do {
+                font = config.font.replace(/\d+px/, fontSize + 'px');
+                textWidth = getTextWidth(text, font);
+            } while (textWidth > space && fontSize !== min && fontSize--);
+            return {
+                textWidth: textWidth,
+                fontSize: fontSize,
+                overflowing: textWidth > space
+            };
+        };
+        function getTextWidth(text, font) {
+            var ctx = getCanvasContext(font);
+            var width = ctx.measureText(text).width;
+            debug('got text width', width);
+            return width;
+        }
+        function getCanvasContext(font) {
+            debug('get canvas context', font);
+            var cached = cache[font];
+            if (cached) {
+                return cached;
+            }
+            var canvas = document.createElement('canvas');
+            canvas.setAttribute('moz-opaque', 'true');
+            canvas.setAttribute('width', '1px');
+            canvas.setAttribute('height', '1px');
+            debug('created canvas', canvas);
+            var ctx = canvas.getContext('2d', { willReadFrequently: true });
+            ctx.font = font;
+            return cache[font] = ctx;
+        }
+        function trim(text) {
+            return text.replace(/\s+/g, ' ').trim();
+        }
+    });
+}(typeof define == 'function' && define.amd ? define : function (n, w) {
+    'use strict';
+    return typeof module == 'object' ? function (c) {
+        c(require, exports, module);
+    } : function (c) {
+        var m = { exports: {} };
+        c(function (n) {
+            return w[n];
+        }, m.exports, m);
+        w[n] = m.exports;
+    };
+}('font-fit', this)));