- Currently the edX servers are down
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+ The Studio servers encountered an error
+
+ An error occurred in Studio and the page could not be loaded. Please try again in a few moments.
+ We've logged the error and our staff is currently working to resolve this error as soon as possible.
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+
diff --git a/common/lib/xmodule/setup.py b/common/lib/xmodule/setup.py
index 982a77631d..43d970d898 100644
--- a/common/lib/xmodule/setup.py
+++ b/common/lib/xmodule/setup.py
@@ -52,6 +52,7 @@ setup(
"graphical_slider_tool = xmodule.gst_module:GraphicalSliderToolDescriptor",
"annotatable = xmodule.annotatable_module:AnnotatableDescriptor",
"foldit = xmodule.foldit_module:FolditDescriptor",
+ "word_cloud = xmodule.word_cloud_module:WordCloudDescriptor",
"hidden = xmodule.hidden_module:HiddenDescriptor",
"raw = xmodule.raw_module:RawDescriptor",
],
diff --git a/common/lib/xmodule/xmodule/css/word_cloud/display.scss b/common/lib/xmodule/xmodule/css/word_cloud/display.scss
new file mode 100644
index 0000000000..0c6bcd4a46
--- /dev/null
+++ b/common/lib/xmodule/xmodule/css/word_cloud/display.scss
@@ -0,0 +1,21 @@
+.input-cloud {
+ margin: 5px;
+}
+
+.result_cloud_section {
+ display: none;
+ width: 0px;
+ height: 0px;
+}
+
+.result_cloud_section.active {
+ display: block;
+ width: 635px;
+ height: auto;
+ margin-left: auto;
+ margin-right: auto;
+}
+.your_words{
+ font-size: 0.85em;
+ display: block;
+}
\ No newline at end of file
diff --git a/common/lib/xmodule/xmodule/js/src/word_cloud/d3.layout.cloud.js b/common/lib/xmodule/xmodule/js/src/word_cloud/d3.layout.cloud.js
new file mode 100644
index 0000000000..c71057fdca
--- /dev/null
+++ b/common/lib/xmodule/xmodule/js/src/word_cloud/d3.layout.cloud.js
@@ -0,0 +1,434 @@
+/*
+ * Word cloud layout by Jason Davies
+ * https://github.com/jasondavies/d3-cloud
+ *
+ *
+ * Copyright (c) 2012, Jason Davies.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * * The name Jason Davies may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JASON DAVIES BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+(function(exports) {
+ function cloud() {
+ var size = [256, 256],
+ text = cloudText,
+ font = cloudFont,
+ fontSize = cloudFontSize,
+ fontStyle = cloudFontNormal,
+ fontWeight = cloudFontNormal,
+ rotate = cloudRotate,
+ padding = cloudPadding,
+ spiral = archimedeanSpiral,
+ words = [],
+ timeInterval = Infinity,
+ event = d3.dispatch("word", "end"),
+ timer = null,
+ cloud = {};
+
+ cloud.start = function() {
+ var board = zeroArray((size[0] >> 5) * size[1]),
+ bounds = null,
+ n = words.length,
+ i = -1,
+ tags = [],
+ data = words.map(function(d, i) {
+ d.text = text.call(this, d, i);
+ d.font = font.call(this, d, i);
+ d.style = fontStyle.call(this, d, i);
+ d.weight = fontWeight.call(this, d, i);
+ d.rotate = rotate.call(this, d, i);
+ d.size = ~~fontSize.call(this, d, i);
+ d.padding = cloudPadding.call(this, d, i);
+ return d;
+ }).sort(function(a, b) { return b.size - a.size; });
+
+ if (timer) clearInterval(timer);
+ timer = setInterval(step, 0);
+ step();
+
+ return cloud;
+
+ function step() {
+ var start = +new Date,
+ d;
+ while (+new Date - start < timeInterval && ++i < n && timer) {
+ d = data[i];
+ d.x = (size[0] * (Math.random() + .5)) >> 1;
+ d.y = (size[1] * (Math.random() + .5)) >> 1;
+ cloudSprite(d, data, i);
+ if (place(board, d, bounds)) {
+ tags.push(d);
+ event.word(d);
+ if (bounds) cloudBounds(bounds, d);
+ else bounds = [{x: d.x + d.x0, y: d.y + d.y0}, {x: d.x + d.x1, y: d.y + d.y1}];
+ // Temporary hack
+ d.x -= size[0] >> 1;
+ d.y -= size[1] >> 1;
+ }
+ }
+ if (i >= n) {
+ cloud.stop();
+ event.end(tags, bounds);
+ }
+ }
+ }
+
+ cloud.stop = function() {
+ if (timer) {
+ clearInterval(timer);
+ timer = null;
+ }
+ return cloud;
+ };
+
+ cloud.timeInterval = function(x) {
+ if (!arguments.length) return timeInterval;
+ timeInterval = x == null ? Infinity : x;
+ return cloud;
+ };
+
+ function place(board, tag, bounds) {
+ var perimeter = [{x: 0, y: 0}, {x: size[0], y: size[1]}],
+ startX = tag.x,
+ startY = tag.y,
+ maxDelta = Math.sqrt(size[0] * size[0] + size[1] * size[1]),
+ s = spiral(size),
+ dt = Math.random() < .5 ? 1 : -1,
+ t = -dt,
+ dxdy,
+ dx,
+ dy;
+
+ while (dxdy = s(t += dt)) {
+ dx = ~~dxdy[0];
+ dy = ~~dxdy[1];
+
+ if (Math.min(dx, dy) > maxDelta) break;
+
+ tag.x = startX + dx;
+ tag.y = startY + dy;
+
+ if (tag.x + tag.x0 < 0 || tag.y + tag.y0 < 0 ||
+ tag.x + tag.x1 > size[0] || tag.y + tag.y1 > size[1]) continue;
+ // TODO only check for collisions within current bounds.
+ if (!bounds || !cloudCollide(tag, board, size[0])) {
+ if (!bounds || collideRects(tag, bounds)) {
+ var sprite = tag.sprite,
+ w = tag.width >> 5,
+ sw = size[0] >> 5,
+ lx = tag.x - (w << 4),
+ sx = lx & 0x7f,
+ msx = 32 - sx,
+ h = tag.y1 - tag.y0,
+ x = (tag.y + tag.y0) * sw + (lx >> 5),
+ last;
+ for (var j = 0; j < h; j++) {
+ last = 0;
+ for (var i = 0; i <= w; i++) {
+ board[x + i] |= (last << msx) | (i < w ? (last = sprite[j * w + i]) >>> sx : 0);
+ }
+ x += sw;
+ }
+ delete tag.sprite;
+ return true;
+ }
+ }
+ }
+ return false;
+ }
+
+ cloud.words = function(x) {
+ if (!arguments.length) return words;
+ words = x;
+ return cloud;
+ };
+
+ cloud.size = function(x) {
+ if (!arguments.length) return size;
+ size = [+x[0], +x[1]];
+ return cloud;
+ };
+
+ cloud.font = function(x) {
+ if (!arguments.length) return font;
+ font = d3.functor(x);
+ return cloud;
+ };
+
+ cloud.fontStyle = function(x) {
+ if (!arguments.length) return fontStyle;
+ fontStyle = d3.functor(x);
+ return cloud;
+ };
+
+ cloud.fontWeight = function(x) {
+ if (!arguments.length) return fontWeight;
+ fontWeight = d3.functor(x);
+ return cloud;
+ };
+
+ cloud.rotate = function(x) {
+ if (!arguments.length) return rotate;
+ rotate = d3.functor(x);
+ return cloud;
+ };
+
+ cloud.text = function(x) {
+ if (!arguments.length) return text;
+ text = d3.functor(x);
+ return cloud;
+ };
+
+ cloud.spiral = function(x) {
+ if (!arguments.length) return spiral;
+ spiral = spirals[x + ""] || x;
+ return cloud;
+ };
+
+ cloud.fontSize = function(x) {
+ if (!arguments.length) return fontSize;
+ fontSize = d3.functor(x);
+ return cloud;
+ };
+
+ cloud.padding = function(x) {
+ if (!arguments.length) return padding;
+ padding = d3.functor(x);
+ return cloud;
+ };
+
+ return d3.rebind(cloud, event, "on");
+ }
+
+ function cloudText(d) {
+ return d.text;
+ }
+
+ function cloudFont() {
+ return "serif";
+ }
+
+ function cloudFontNormal() {
+ return "normal";
+ }
+
+ function cloudFontSize(d) {
+ return Math.sqrt(d.value);
+ }
+
+ function cloudRotate() {
+ return (~~(Math.random() * 6) - 3) * 30;
+ }
+
+ function cloudPadding() {
+ return 1;
+ }
+
+ // Fetches a monochrome sprite bitmap for the specified text.
+ // Load in batches for speed.
+ function cloudSprite(d, data, di) {
+ if (d.sprite) return;
+ c.clearRect(0, 0, (cw << 5) / ratio, ch / ratio);
+ var x = 0,
+ y = 0,
+ maxh = 0,
+ n = data.length;
+ di--;
+ while (++di < n) {
+ d = data[di];
+ c.save();
+ c.font = d.style + " " + d.weight + " " + ~~((d.size + 1) / ratio) + "px " + d.font;
+ var w = c.measureText(d.text + "m").width * ratio,
+ h = d.size << 1;
+ if (d.rotate) {
+ var sr = Math.sin(d.rotate * cloudRadians),
+ cr = Math.cos(d.rotate * cloudRadians),
+ wcr = w * cr,
+ wsr = w * sr,
+ hcr = h * cr,
+ hsr = h * sr;
+ w = (Math.max(Math.abs(wcr + hsr), Math.abs(wcr - hsr)) + 0x1f) >> 5 << 5;
+ h = ~~Math.max(Math.abs(wsr + hcr), Math.abs(wsr - hcr));
+ } else {
+ w = (w + 0x1f) >> 5 << 5;
+ }
+ if (h > maxh) maxh = h;
+ if (x + w >= (cw << 5)) {
+ x = 0;
+ y += maxh;
+ maxh = 0;
+ }
+ if (y + h >= ch) break;
+ c.translate((x + (w >> 1)) / ratio, (y + (h >> 1)) / ratio);
+ if (d.rotate) c.rotate(d.rotate * cloudRadians);
+ c.fillText(d.text, 0, 0);
+ c.restore();
+ d.width = w;
+ d.height = h;
+ d.xoff = x;
+ d.yoff = y;
+ d.x1 = w >> 1;
+ d.y1 = h >> 1;
+ d.x0 = -d.x1;
+ d.y0 = -d.y1;
+ x += w;
+ }
+ var pixels = c.getImageData(0, 0, (cw << 5) / ratio, ch / ratio).data,
+ sprite = [];
+ while (--di >= 0) {
+ d = data[di];
+ var w = d.width,
+ w32 = w >> 5,
+ h = d.y1 - d.y0,
+ p = d.padding;
+ // Zero the buffer
+ for (var i = 0; i < h * w32; i++) sprite[i] = 0;
+ x = d.xoff;
+ if (x == null) return;
+ y = d.yoff;
+ var seen = 0,
+ seenRow = -1;
+ for (var j = 0; j < h; j++) {
+ for (var i = 0; i < w; i++) {
+ var k = w32 * j + (i >> 5),
+ m = pixels[((y + j) * (cw << 5) + (x + i)) << 2] ? 1 << (31 - (i % 32)) : 0;
+ if (p) {
+ if (j) sprite[k - w32] |= m;
+ if (j < w - 1) sprite[k + w32] |= m;
+ m |= (m << 1) | (m >> 1);
+ }
+ sprite[k] |= m;
+ seen |= m;
+ }
+ if (seen) seenRow = j;
+ else {
+ d.y0++;
+ h--;
+ j--;
+ y++;
+ }
+ }
+ d.y1 = d.y0 + seenRow;
+ d.sprite = sprite.slice(0, (d.y1 - d.y0) * w32);
+ }
+ }
+
+ // Use mask-based collision detection.
+ function cloudCollide(tag, board, sw) {
+ sw >>= 5;
+ var sprite = tag.sprite,
+ w = tag.width >> 5,
+ lx = tag.x - (w << 4),
+ sx = lx & 0x7f,
+ msx = 32 - sx,
+ h = tag.y1 - tag.y0,
+ x = (tag.y + tag.y0) * sw + (lx >> 5),
+ last;
+ for (var j = 0; j < h; j++) {
+ last = 0;
+ for (var i = 0; i <= w; i++) {
+ if (((last << msx) | (i < w ? (last = sprite[j * w + i]) >>> sx : 0))
+ & board[x + i]) return true;
+ }
+ x += sw;
+ }
+ return false;
+ }
+
+ function cloudBounds(bounds, d) {
+ var b0 = bounds[0],
+ b1 = bounds[1];
+ if (d.x + d.x0 < b0.x) b0.x = d.x + d.x0;
+ if (d.y + d.y0 < b0.y) b0.y = d.y + d.y0;
+ if (d.x + d.x1 > b1.x) b1.x = d.x + d.x1;
+ if (d.y + d.y1 > b1.y) b1.y = d.y + d.y1;
+ }
+
+ function collideRects(a, b) {
+ return a.x + a.x1 > b[0].x && a.x + a.x0 < b[1].x && a.y + a.y1 > b[0].y && a.y + a.y0 < b[1].y;
+ }
+
+ function archimedeanSpiral(size) {
+ var e = size[0] / size[1];
+ return function(t) {
+ return [e * (t *= .1) * Math.cos(t), t * Math.sin(t)];
+ };
+ }
+
+ function rectangularSpiral(size) {
+ var dy = 4,
+ dx = dy * size[0] / size[1],
+ x = 0,
+ y = 0;
+ return function(t) {
+ var sign = t < 0 ? -1 : 1;
+ // See triangular numbers: T_n = n * (n + 1) / 2.
+ switch ((Math.sqrt(1 + 4 * sign * t) - sign) & 3) {
+ case 0: x += dx; break;
+ case 1: y += dy; break;
+ case 2: x -= dx; break;
+ default: y -= dy; break;
+ }
+ return [x, y];
+ };
+ }
+
+ // TODO reuse arrays?
+ function zeroArray(n) {
+ var a = [],
+ i = -1;
+ while (++i < n) a[i] = 0;
+ return a;
+ }
+
+ var cloudRadians = Math.PI / 180,
+ cw = 1 << 11 >> 5,
+ ch = 1 << 11,
+ canvas,
+ ratio = 1;
+
+ if (typeof document !== "undefined") {
+ canvas = document.createElement("canvas");
+ canvas.width = 1;
+ canvas.height = 1;
+ ratio = Math.sqrt(canvas.getContext("2d").getImageData(0, 0, 1, 1).data.length >> 2);
+ canvas.width = (cw << 5) / ratio;
+ canvas.height = ch / ratio;
+ } else {
+ // node-canvas support
+ var Canvas = require("canvas");
+ canvas = new Canvas(cw << 5, ch);
+ }
+
+ var c = canvas.getContext("2d"),
+ spirals = {
+ archimedean: archimedeanSpiral,
+ rectangular: rectangularSpiral
+ };
+ c.fillStyle = "red";
+ c.textAlign = "center";
+
+ exports.cloud = cloud;
+})(typeof exports === "undefined" ? d3.layout || (d3.layout = {}) : exports);
diff --git a/common/lib/xmodule/xmodule/js/src/word_cloud/d3.min.js b/common/lib/xmodule/xmodule/js/src/word_cloud/d3.min.js
new file mode 100644
index 0000000000..0e56f06713
--- /dev/null
+++ b/common/lib/xmodule/xmodule/js/src/word_cloud/d3.min.js
@@ -0,0 +1,37 @@
+/*
+ * d3 - Data-Driven Documents
+ * https://github.com/mbostock/d3
+ *
+ *
+ * Copyright (c) 2013, Michael Bostock
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * * The name Michael Bostock may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL MICHAEL BOSTOCK BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+d3=function(){function n(n){return null!=n&&!isNaN(n)}function t(n){return n.length}function e(n){for(var t=1;n*t%1;)t*=10;return t}function r(n,t){try{for(var e in t)Object.defineProperty(n.prototype,e,{value:t[e],enumerable:!1})}catch(r){n.prototype=t}}function u(){}function i(){}function a(n,t,e){return function(){var r=e.apply(t,arguments);return r===t?n:r}}function o(){}function c(n){function t(){for(var t,r=e,u=-1,i=r.length;++u