- {
- “cells”: [
- {
“cell_type”: “markdown”, “metadata”: {}, “source”: [
“# Getting Startedn”, “n”, “Animatplot is built on the concept of blocks. We’ll start by animating a Line block.n”, “n”, “First we need some imports.”
]
}, {
“cell_type”: “raw”, “metadata”: {
“raw_mimetype”: “text/restructuredtext”
}, “source”: [
“.. Note::n”, “ n”, “ Interactivity is not available in the static docs. Run the code locally to get interactivity.”
]
}, {
“cell_type”: “markdown”, “metadata”: {}, “source”: [
“## Basic Animation”
]
}, {
“cell_type”: “code”, “execution_count”: 1, “metadata”: {}, “outputs”: [], “source”: [
“%matplotlib notebookn”, “import numpy as npn”, “import matplotlib.pyplot as pltn”, “import animatplot as amp”
]
}, {
“cell_type”: “markdown”, “metadata”: {}, “source”: [
“We will animate the function:n”, “n”, “$y = \sin(2\pi(x+t))$ over the range $x=[0,1]$, and $t=[0,1]$n”, “n”, “Let’s generate the data:”
]
}, {
“cell_type”: “code”, “execution_count”: 2, “metadata”: {}, “outputs”: [], “source”: [
“x = np.linspace(0, 1, 50)n”, “t = np.linspace(0, 1, 20)n”, “n”, “X, T = np.meshgrid(x, t)n”, “Y = np.sin(2 * np.pi * (X + T))”
]
}, {
“cell_type”: “markdown”, “metadata”: {}, “source”: [
“In order to tell animatplot how to animate the data, we must pass it into a block. By default, the Line block will consider each of the rows in a 2D array to be a line at a different point in time.n”, “n”, “We then pass a list of all our blocks into an Animation, and show the animation.”
]
}, {
“cell_type”: “code”, “execution_count”: 3, “metadata”: {}, “outputs”: [
- {
- “data”: {
- “application/javascript”: [
“/* Put everything inside the global mpl namespace /n”, “window.mpl = {};n”, “n”, “n”, “mpl.get_websocket_type = function() {n”, “ if (typeof(WebSocket) !== ‘undefined’) {n”, “ return WebSocket;n”, “ } else if (typeof(MozWebSocket) !== ‘undefined’) {n”, “ return MozWebSocket;n”, “ } else {n”, “ alert(‘Your browser does not have WebSocket support.’ +n”, “ ‘Please try Chrome, Safari or Firefox ≥ 6. ‘ +n”, “ ‘Firefox 4 and 5 are also supported but you ‘ +n”, “ ‘have to enable WebSockets in about:config.’);n”, “ };n”, “}n”, “n”, “mpl.figure = function(figure_id, websocket, ondownload, parent_element) {n”, “ this.id = figure_id;n”, “n”, “ this.ws = websocket;n”, “n”, “ this.supports_binary = (this.ws.binaryType != undefined);n”, “n”, “ if (!this.supports_binary) {n”, “ var warnings = document.getElementById("mpl-warnings");n”, “ if (warnings) {n”, “ warnings.style.display = ‘block’;n”, “ warnings.textContent = (n”, “ "This browser does not support binary websocket messages. " +n”, “ "Performance may be slow.");n”, “ }n”, “ }n”, “n”, “ this.imageObj = new Image();n”, “n”, “ this.context = undefined;n”, “ this.message = undefined;n”, “ this.canvas = undefined;n”, “ this.rubberband_canvas = undefined;n”, “ this.rubberband_context = undefined;n”, “ this.format_dropdown = undefined;n”, “n”, “ this.image_mode = ‘full’;n”, “n”, “ this.root = $(‘<div/>’);n”, “ this._root_extra_style(this.root)n”, “ this.root.attr(‘style’, ‘display: inline-block’);n”, “n”, “ $(parent_element).append(this.root);n”, “n”, “ this._init_header(this);n”, “ this._init_canvas(this);n”, “ this._init_toolbar(this);n”, “n”, “ var fig = this;n”, “n”, “ this.waiting = false;n”, “n”, “ this.ws.onopen = function () {n”, “ fig.send_message("supports_binary", {value: fig.supports_binary});n”, “ fig.send_message("send_image_mode", {});n”, “ if (mpl.ratio != 1) {n”, “ fig.send_message("set_dpi_ratio", {‘dpi_ratio’: mpl.ratio});n”, “ }n”, “ fig.send_message("refresh", {});n”, “ }n”, “n”, “ this.imageObj.onload = function() {n”, “ if (fig.image_mode == ‘full’) {n”, “ // Full images could contain transparency (where diff imagesn”, “ // almost always do), so we need to clear the canvas so thatn”, “ // there is no ghosting.n”, “ fig.context.clearRect(0, 0, fig.canvas.width, fig.canvas.height);n”, “ }n”, “ fig.context.drawImage(fig.imageObj, 0, 0);n”, “ };n”, “n”, “ this.imageObj.onunload = function() {n”, “ fig.ws.close();n”, “ }n”, “n”, “ this.ws.onmessage = this._make_on_message_function(this);n”, “n”, “ this.ondownload = ondownload;n”, “}n”, “n”, “mpl.figure.prototype._init_header = function() {n”, “ var titlebar = $(n”, “ ‘<div class="ui-dialog-titlebar ui-widget-header ui-corner-all ‘ +n”, “ ‘ui-helper-clearfix"/>’);n”, “ var titletext = $(n”, “ ‘<div class="ui-dialog-title" style="width: 100%; ‘ +n”, “ ‘text-align: center; padding: 3px;"/>’);n”, “ titlebar.append(titletext)n”, “ this.root.append(titlebar);n”, “ this.header = titletext[0];n”, “}n”, “n”, “n”, “n”, “mpl.figure.prototype._canvas_extra_style = function(canvas_div) {n”, “n”, “}n”, “n”, “n”, “mpl.figure.prototype._root_extra_style = function(canvas_div) {n”, “n”, “}n”, “n”, “mpl.figure.prototype._init_canvas = function() {n”, “ var fig = this;n”, “n”, “ var canvas_div = $(‘<div/>’);n”, “n”, “ canvas_div.attr(‘style’, ‘position: relative; clear: both; outline: 0’);n”, “n”, “ function canvas_keyboard_event(event) {n”, “ return fig.key_event(event, event[‘data’]);n”, “ }n”, “n”, “ canvas_div.keydown(‘key_press’, canvas_keyboard_event);n”, “ canvas_div.keyup(‘key_release’, canvas_keyboard_event);n”, “ this.canvas_div = canvas_divn”, “ this._canvas_extra_style(canvas_div)n”, “ this.root.append(canvas_div);n”, “n”, “ var canvas = $(‘<canvas/>’);n”, “ canvas.addClass(‘mpl-canvas’);n”, “ canvas.attr(‘style’, "left: 0; top: 0; z-index: 0; outline: 0")n”, “n”, “ this.canvas = canvas[0];n”, “ this.context = canvas[0].getContext("2d");n”, “n”, “ var backingStore = this.context.backingStorePixelRatio ||n”, “tthis.context.webkitBackingStorePixelRatio ||n”, “tthis.context.mozBackingStorePixelRatio ||n”, “tthis.context.msBackingStorePixelRatio ||n”, “tthis.context.oBackingStorePixelRatio ||n”, “tthis.context.backingStorePixelRatio || 1;n”, “n”, “ mpl.ratio = (window.devicePixelRatio || 1) / backingStore;n”, “n”, “ var rubberband = $(‘<canvas/>’);n”, “ rubberband.attr(‘style’, "position: absolute; left: 0; top: 0; z-index: 1;")n”, “n”, “ var pass_mouse_events = true;n”, “n”, “ canvas_div.resizable({n”, “ start: function(event, ui) {n”, “ pass_mouse_events = false;n”, “ },n”, “ resize: function(event, ui) {n”, “ fig.request_resize(ui.size.width, ui.size.height);n”, “ },n”, “ stop: function(event, ui) {n”, “ pass_mouse_events = true;n”, “ fig.request_resize(ui.size.width, ui.size.height);n”, “ },n”, “ });n”, “n”, “ function mouse_event_fn(event) {n”, “ if (pass_mouse_events)n”, “ return fig.mouse_event(event, event[‘data’]);n”, “ }n”, “n”, “ rubberband.mousedown(‘button_press’, mouse_event_fn);n”, “ rubberband.mouseup(‘button_release’, mouse_event_fn);n”, “ // Throttle sequential mouse events to 1 every 20ms.n”, “ rubberband.mousemove(‘motion_notify’, mouse_event_fn);n”, “n”, “ rubberband.mouseenter(‘figure_enter’, mouse_event_fn);n”, “ rubberband.mouseleave(‘figure_leave’, mouse_event_fn);n”, “n”, “ canvas_div.on("wheel", function (event) {n”, “ event = event.originalEvent;n”, “ event[‘data’] = ‘scroll’n”, “ if (event.deltaY < 0) {n”, “ event.step = 1;n”, “ } else {n”, “ event.step = -1;n”, “ }n”, “ mouse_event_fn(event);n”, “ });n”, “n”, “ canvas_div.append(canvas);n”, “ canvas_div.append(rubberband);n”, “n”, “ this.rubberband = rubberband;n”, “ this.rubberband_canvas = rubberband[0];n”, “ this.rubberband_context = rubberband[0].getContext("2d");n”, “ this.rubberband_context.strokeStyle = "#000000";n”, “n”, “ this._resize_canvas = function(width, height) {n”, “ // Keep the size of the canvas, canvas container, and rubber bandn”, “ // canvas in synch.n”, “ canvas_div.css(‘width’, width)n”, “ canvas_div.css(‘height’, height)n”, “n”, “ canvas.attr(‘width’, width * mpl.ratio);n”, “ canvas.attr(‘height’, height * mpl.ratio);n”, “ canvas.attr(‘style’, ‘width: ‘ + width + ‘px; height: ‘ + height + ‘px;’);n”, “n”, “ rubberband.attr(‘width’, width);n”, “ rubberband.attr(‘height’, height);n”, “ }n”, “n”, “ // Set the figure to an initial 600x600px, this will subsequently be updatedn”, “ // upon first draw.n”, “ this._resize_canvas(600, 600);n”, “n”, “ // Disable right mouse context menu.n”, “ $(this.rubberband_canvas).bind("contextmenu",function(e){n”, “ return false;n”, “ });n”, “n”, “ function set_focus () {n”, “ canvas.focus();n”, “ canvas_div.focus();n”, “ }n”, “n”, “ window.setTimeout(set_focus, 100);n”, “}n”, “n”, “mpl.figure.prototype._init_toolbar = function() {n”, “ var fig = this;n”, “n”, “ var nav_element = $(‘<div/>’)n”, “ nav_element.attr(‘style’, ‘width: 100%’);n”, “ this.root.append(nav_element);n”, “n”, “ // Define a callback function for later on.n”, “ function toolbar_event(event) {n”, “ return fig.toolbar_button_onclick(event[‘data’]);n”, “ }n”, “ function toolbar_mouse_event(event) {n”, “ return fig.toolbar_button_onmouseover(event[‘data’]);n”, “ }n”, “n”, “ for(var toolbar_ind in mpl.toolbar_items) {n”, “ var name = mpl.toolbar_items[toolbar_ind][0];n”, “ var tooltip = mpl.toolbar_items[toolbar_ind][1];n”, “ var image = mpl.toolbar_items[toolbar_ind][2];n”, “ var method_name = mpl.toolbar_items[toolbar_ind][3];n”, “n”, “ if (!name) {n”, “ // put a spacer in here.n”, “ continue;n”, “ }n”, “ var button = $(‘<button/>’);n”, “ button.addClass(‘ui-button ui-widget ui-state-default ui-corner-all ‘ +n”, “ ‘ui-button-icon-only’);n”, “ button.attr(‘role’, ‘button’);n”, “ button.attr(‘aria-disabled’, ‘false’);n”, “ button.click(method_name, toolbar_event);n”, “ button.mouseover(tooltip, toolbar_mouse_event);n”, “n”, “ var icon_img = $(‘<span/>’);n”, “ icon_img.addClass(‘ui-button-icon-primary ui-icon’);n”, “ icon_img.addClass(image);n”, “ icon_img.addClass(‘ui-corner-all’);n”, “n”, “ var tooltip_span = $(‘<span/>’);n”, “ tooltip_span.addClass(‘ui-button-text’);n”, “ tooltip_span.html(tooltip);n”, “n”, “ button.append(icon_img);n”, “ button.append(tooltip_span);n”, “n”, “ nav_element.append(button);n”, “ }n”, “n”, “ var fmt_picker_span = $(‘<span/>’);n”, “n”, “ var fmt_picker = $(‘<select/>’);n”, “ fmt_picker.addClass(‘mpl-toolbar-option ui-widget ui-widget-content’);n”, “ fmt_picker_span.append(fmt_picker);n”, “ nav_element.append(fmt_picker_span);n”, “ this.format_dropdown = fmt_picker[0];n”, “n”, “ for (var ind in mpl.extensions) {n”, “ var fmt = mpl.extensions[ind];n”, “ var option = $(n”, “ ‘<option/>’, {selected: fmt === mpl.default_extension}).html(fmt);n”, “ fmt_picker.append(option)n”, “ }n”, “n”, “ // Add hover states to the ui-buttonsn”, “ $( ".ui-button" ).hover(n”, “ function() { $(this).addClass("ui-state-hover");},n”, “ function() { $(this).removeClass("ui-state-hover");}n”, “ );n”, “n”, “ var status_bar = $(‘<span class="mpl-message"/>’);n”, “ nav_element.append(status_bar);n”, “ this.message = status_bar[0];n”, “}n”, “n”, “mpl.figure.prototype.request_resize = function(x_pixels, y_pixels) {n”, “ // Request matplotlib to resize the figure. Matplotlib will then trigger a resize in the client,n”, “ // which will in turn request a refresh of the image.n”, “ this.send_message(‘resize’, {‘width’: x_pixels, ‘height’: y_pixels});n”, “}n”, “n”, “mpl.figure.prototype.send_message = function(type, properties) {n”, “ properties[‘type’] = type;n”, “ properties[‘figure_id’] = this.id;n”, “ this.ws.send(JSON.stringify(properties));n”, “}n”, “n”, “mpl.figure.prototype.send_draw_message = function() {n”, “ if (!this.waiting) {n”, “ this.waiting = true;n”, “ this.ws.send(JSON.stringify({type: "draw", figure_id: this.id}));n”, “ }n”, “}n”, “n”, “n”, “mpl.figure.prototype.handle_save = function(fig, msg) {n”, “ var format_dropdown = fig.format_dropdown;n”, “ var format = format_dropdown.options[format_dropdown.selectedIndex].value;n”, “ fig.ondownload(fig, format);n”, “}n”, “n”, “n”, “mpl.figure.prototype.handle_resize = function(fig, msg) {n”, “ var size = msg[‘size’];n”, “ if (size[0] != fig.canvas.width || size[1] != fig.canvas.height) {n”, “ fig._resize_canvas(size[0], size[1]);n”, “ fig.send_message("refresh", {});n”, “ };n”, “}n”, “n”, “mpl.figure.prototype.handle_rubberband = function(fig, msg) {n”, “ var x0 = msg[‘x0’] / mpl.ratio;n”, “ var y0 = (fig.canvas.height - msg[‘y0’]) / mpl.ratio;n”, “ var x1 = msg[‘x1’] / mpl.ratio;n”, “ var y1 = (fig.canvas.height - msg[‘y1’]) / mpl.ratio;n”, “ x0 = Math.floor(x0) + 0.5;n”, “ y0 = Math.floor(y0) + 0.5;n”, “ x1 = Math.floor(x1) + 0.5;n”, “ y1 = Math.floor(y1) + 0.5;n”, “ var min_x = Math.min(x0, x1);n”, “ var min_y = Math.min(y0, y1);n”, “ var width = Math.abs(x1 - x0);n”, “ var height = Math.abs(y1 - y0);n”, “n”, “ fig.rubberband_context.clearRect(n”, “ 0, 0, fig.canvas.width, fig.canvas.height);n”, “n”, “ fig.rubberband_context.strokeRect(min_x, min_y, width, height);n”, “}n”, “n”, “mpl.figure.prototype.handle_figure_label = function(fig, msg) {n”, “ // Updates the figure title.n”, “ fig.header.textContent = msg[‘label’];n”, “}n”, “n”, “mpl.figure.prototype.handle_cursor = function(fig, msg) {n”, “ var cursor = msg[‘cursor’];n”, “ switch(cursor)n”, “ {n”, “ case 0:n”, “ cursor = ‘pointer’;n”, “ break;n”, “ case 1:n”, “ cursor = ‘default’;n”, “ break;n”, “ case 2:n”, “ cursor = ‘crosshair’;n”, “ break;n”, “ case 3:n”, “ cursor = ‘move’;n”, “ break;n”, “ }n”, “ fig.rubberband_canvas.style.cursor = cursor;n”, “}n”, “n”, “mpl.figure.prototype.handle_message = function(fig, msg) {n”, “ fig.message.textContent = msg[‘message’];n”, “}n”, “n”, “mpl.figure.prototype.handle_draw = function(fig, msg) {n”, “ // Request the server to send over a new figure.n”, “ fig.send_draw_message();n”, “}n”, “n”, “mpl.figure.prototype.handle_image_mode = function(fig, msg) {n”, “ fig.image_mode = msg[‘mode’];n”, “}n”, “n”, “mpl.figure.prototype.updated_canvas_event = function() {n”, “ // Called whenever the canvas gets updated.n”, “ this.send_message("ack", {});n”, “}n”, “n”, “// A function to construct a web socket function for onmessage handling.n”, “// Called in the figure constructor.n”, “mpl.figure.prototype._make_on_message_function = function(fig) {n”, “ return function socket_on_message(evt) {n”, “ if (evt.data instanceof Blob) {n”, “ / FIXME: We get "Resource interpreted as Image butn”, “ * transferred with MIME type text/plain:" errors onn”, “ * Chrome. But how to set the MIME type? It doesn’t seemn”, “ * to be part of the websocket stream /n”, “ evt.data.type = "image/png";n”, “n”, “ / Free the memory for the previous frames /n”, “ if (fig.imageObj.src) {n”, “ (window.URL || window.webkitURL).revokeObjectURL(n”, “ fig.imageObj.src);n”, “ }n”, “n”, “ fig.imageObj.src = (window.URL || window.webkitURL).createObjectURL(n”, “ evt.data);n”, “ fig.updated_canvas_event();n”, “ fig.waiting = false;n”, “ return;n”, “ }n”, “ else if (typeof evt.data === ‘string’ && evt.data.slice(0, 21) == "data:image/png;base64") {n”, “ fig.imageObj.src = evt.data;n”, “ fig.updated_canvas_event();n”, “ fig.waiting = false;n”, “ return;n”, “ }n”, “n”, “ var msg = JSON.parse(evt.data);n”, “ var msg_type = msg[‘type’];n”, “n”, “ // Call the "handle_{type}" callback, which takesn”, “ // the figure and JSON message as its only arguments.n”, “ try {n”, “ var callback = fig["handle_" + msg_type];n”, “ } catch (e) {n”, “ console.log("No handler for the ‘" + msg_type + "’ message type: ", msg);n”, “ return;n”, “ }n”, “n”, “ if (callback) {n”, “ try {n”, “ // console.log("Handling ‘" + msg_type + "’ message: ", msg);n”, “ callback(fig, msg);n”, “ } catch (e) {n”, “ console.log("Exception inside the ‘handler_" + msg_type + "’ callback:", e, e.stack, msg);n”, “ }n”, “ }n”, “ };n”, “}n”, “n”, “// from http://stackoverflow.com/questions/1114465/getting-mouse-location-in-canvasn”, “mpl.findpos = function(e) {n”, “ //this section is from http://www.quirksmode.org/js/events_properties.htmln”, “ var targ;n”, “ if (!e)n”, “ e = window.event;n”, “ if (e.target)n”, “ targ = e.target;n”, “ else if (e.srcElement)n”, “ targ = e.srcElement;n”, “ if (targ.nodeType == 3) // defeat Safari bugn”, “ targ = targ.parentNode;n”, “n”, “ // jQuery normalizes the pageX and pageYn”, “ // pageX,Y are the mouse positions relative to the documentn”, “ // offset() returns the position of the element relative to the documentn”, “ var x = e.pageX - $(targ).offset().left;n”, “ var y = e.pageY - $(targ).offset().top;n”, “n”, “ return {"x": x, "y": y};n”, “};n”, “n”, “/n”, “ * return a copy of an object with only non-object keysn”, “ * we need this to avoid circular referencesn”, “ * http://stackoverflow.com/a/24161582/3208463n”, “ /n”, “function simpleKeys (original) {n”, “ return Object.keys(original).reduce(function (obj, key) {n”, “ if (typeof original[key] !== ‘object’)n”, “ obj[key] = original[key]n”, “ return obj;n”, “ }, {});n”, “}n”, “n”, “mpl.figure.prototype.mouse_event = function(event, name) {n”, “ var canvas_pos = mpl.findpos(event)n”, “n”, “ if (name === ‘button_press’)n”, “ {n”, “ this.canvas.focus();n”, “ this.canvas_div.focus();n”, “ }n”, “n”, “ var x = canvas_pos.x * mpl.ratio;n”, “ var y = canvas_pos.y * mpl.ratio;n”, “n”, “ this.send_message(name, {x: x, y: y, button: event.button,n”, “ step: event.step,n”, “ guiEvent: simpleKeys(event)});n”, “n”, “ / This prevents the web browser from automatically changing ton”, “ * the text insertion cursor when the button is pressed. We wantn”, “ * to control all of the cursor setting manually through then”, “ * ‘cursor’ event from matplotlib /n”, “ event.preventDefault();n”, “ return false;n”, “}n”, “n”, “mpl.figure.prototype._key_event_extra = function(event, name) {n”, “ // Handle any extra behaviour associated with a key eventn”, “}n”, “n”, “mpl.figure.prototype.key_event = function(event, name) {n”, “n”, “ // Prevent repeat eventsn”, “ if (name == ‘key_press’)n”, “ {n”, “ if (event.which === this._key)n”, “ return;n”, “ elsen”, “ this._key = event.which;n”, “ }n”, “ if (name == ‘key_release’)n”, “ this._key = null;n”, “n”, “ var value = ‘’;n”, “ if (event.ctrlKey && event.which != 17)n”, “ value += "ctrl+";n”, “ if (event.altKey && event.which != 18)n”, “ value += "alt+";n”, “ if (event.shiftKey && event.which != 16)n”, “ value += "shift+";n”, “n”, “ value += ‘k’;n”, “ value += event.which.toString();n”, “n”, “ this._key_event_extra(event, name);n”, “n”, “ this.send_message(name, {key: value,n”, “ guiEvent: simpleKeys(event)});n”, “ return false;n”, “}n”, “n”, “mpl.figure.prototype.toolbar_button_onclick = function(name) {n”, “ if (name == ‘download’) {n”, “ this.handle_save(this, null);n”, “ } else {n”, “ this.send_message("toolbar_button", {name: name});n”, “ }n”, “};n”, “n”, “mpl.figure.prototype.toolbar_button_onmouseover = function(tooltip) {n”, “ this.message.textContent = tooltip;n”, “};n”, “mpl.toolbar_items = [["Home", "Reset original view", "fa fa-home icon-home", "home"], ["Back", "Back to previous view", "fa fa-arrow-left icon-arrow-left", "back"], ["Forward", "Forward to next view", "fa fa-arrow-right icon-arrow-right", "forward"], ["", "", "", ""], ["Pan", "Pan axes with left mouse, zoom with right", "fa fa-arrows icon-move", "pan"], ["Zoom", "Zoom to rectangle", "fa fa-square-o icon-check-empty", "zoom"], ["", "", "", ""], ["Download", "Download plot", "fa fa-floppy-o icon-save", "download"]];n”, “n”, “mpl.extensions = ["eps", "jpeg", "pdf", "png", "ps", "raw", "svg", "tif"];n”, “n”, “mpl.default_extension = "png";var comm_websocket_adapter = function(comm) {n”, “ // Create a "websocket"-like object which calls the given IPython commn”, “ // object with the appropriate methods. Currently this is a non binaryn”, “ // socket, so there is still some room for performance tuning.n”, “ var ws = {};n”, “n”, “ ws.close = function() {n”, “ comm.close()n”, “ };n”, “ ws.send = function(m) {n”, “ //console.log(‘sending’, m);n”, “ comm.send(m);n”, “ };n”, “ // Register the callback with on_msg.n”, “ comm.on_msg(function(msg) {n”, “ //console.log(‘receiving’, msg[‘content’][‘data’], msg);n”, “ // Pass the mpl event to the overridden (by mpl) onmessage function.n”, “ ws.onmessage(msg[‘content’][‘data’])n”, “ });n”, “ return ws;n”, “}n”, “n”, “mpl.mpl_figure_comm = function(comm, msg) {n”, “ // This is the function which gets called when the mpl processn”, “ // starts-up an IPython Comm through the "matplotlib" channel.n”, “n”, “ var id = msg.content.data.id;n”, “ // Get hold of the div created by the display call when the Commn”, “ // socket was opened in Python.n”, “ var element = $("#" + id);n”, “ var ws_proxy = comm_websocket_adapter(comm)n”, “n”, “ function ondownload(figure, format) {n”, “ window.open(figure.imageObj.src);n”, “ }n”, “n”, “ var fig = new mpl.figure(id, ws_proxy,n”, “ ondownload,n”, “ element.get(0));n”, “n”, “ // Call onopen now - mpl needs it, as it is assuming we’ve passed it a realn”, “ // web socket which is closed, not our websocket->open comm proxy.n”, “ ws_proxy.onopen();n”, “n”, “ fig.parent_element = element.get(0);n”, “ fig.cell_info = mpl.find_output_cell("<div id=’" + id + "’></div>");n”, “ if (!fig.cell_info) {n”, “ console.error("Failed to find cell for figure", id, fig);n”, “ return;n”, “ }n”, “n”, “ var output_index = fig.cell_info[2]n”, “ var cell = fig.cell_info[0];n”, “n”, “};n”, “n”, “mpl.figure.prototype.handle_close = function(fig, msg) {n”, “ var width = fig.canvas.width/mpl.ration”, “ fig.root.unbind(‘remove’)n”, “n”, “ // Update the output cell to use the data from the current canvas.n”, “ fig.push_to_output();n”, “ var dataURL = fig.canvas.toDataURL();n”, “ // Re-enable the keyboard manager in IPython - without this line, in FF,n”, “ // the notebook keyboard shortcuts fail.n”, “ IPython.keyboard_manager.enable()n”, “ $(fig.parent_element).html(‘<img src="’ + dataURL + ‘" width="’ + width + ‘">’);n”, “ fig.close_ws(fig, msg);n”, “}n”, “n”, “mpl.figure.prototype.close_ws = function(fig, msg){n”, “ fig.send_message(‘closing’, msg);n”, “ // fig.ws.close()n”, “}n”, “n”, “mpl.figure.prototype.push_to_output = function(remove_interactive) {n”, “ // Turn the data on the canvas into data in the output cell.n”, “ var width = this.canvas.width/mpl.ration”, “ var dataURL = this.canvas.toDataURL();n”, “ this.cell_info[1][‘text/html’] = ‘<img src="’ + dataURL + ‘" width="’ + width + ‘">’;n”, “}n”, “n”, “mpl.figure.prototype.updated_canvas_event = function() {n”, “ // Tell IPython that the notebook contents must change.n”, “ IPython.notebook.set_dirty(true);n”, “ this.send_message("ack", {});n”, “ var fig = this;n”, “ // Wait a second, then push the new image to the DOM son”, “ // that it is saved nicely (might be nice to debounce this).n”, “ setTimeout(function () { fig.push_to_output() }, 1000);n”, “}n”, “n”, “mpl.figure.prototype._init_toolbar = function() {n”, “ var fig = this;n”, “n”, “ var nav_element = $(‘<div/>’)n”, “ nav_element.attr(‘style’, ‘width: 100%’);n”, “ this.root.append(nav_element);n”, “n”, “ // Define a callback function for later on.n”, “ function toolbar_event(event) {n”, “ return fig.toolbar_button_onclick(event[‘data’]);n”, “ }n”, “ function toolbar_mouse_event(event) {n”, “ return fig.toolbar_button_onmouseover(event[‘data’]);n”, “ }n”, “n”, “ for(var toolbar_ind in mpl.toolbar_items){n”, “ var name = mpl.toolbar_items[toolbar_ind][0];n”, “ var tooltip = mpl.toolbar_items[toolbar_ind][1];n”, “ var image = mpl.toolbar_items[toolbar_ind][2];n”, “ var method_name = mpl.toolbar_items[toolbar_ind][3];n”, “n”, “ if (!name) { continue; };n”, “n”, “ var button = $(‘<button class="btn btn-default" href="#" title="’ + name + ‘"><i class="fa ‘ + image + ‘ fa-lg"></i></button>’);n”, “ button.click(method_name, toolbar_event);n”, “ button.mouseover(tooltip, toolbar_mouse_event);n”, “ nav_element.append(button);n”, “ }n”, “n”, “ // Add the status bar.n”, “ var status_bar = $(‘<span class="mpl-message" style="text-align:right; float: right;"/>’);n”, “ nav_element.append(status_bar);n”, “ this.message = status_bar[0];n”, “n”, “ // Add the close button to the window.n”, “ var buttongrp = $(‘<div class="btn-group inline pull-right"></div>’);n”, “ var button = $(‘<button class="btn btn-mini btn-primary" href="#" title="Stop Interaction"><i class="fa fa-power-off icon-remove icon-large"></i></button>’);n”, “ button.click(function (evt) { fig.handle_close(fig, {}); } );n”, “ button.mouseover(‘Stop Interaction’, toolbar_mouse_event);n”, “ buttongrp.append(button);n”, “ var titlebar = this.root.find($(‘.ui-dialog-titlebar’));n”, “ titlebar.prepend(buttongrp);n”, “}n”, “n”, “mpl.figure.prototype._root_extra_style = function(el){n”, “ var fig = thisn”, “ el.on("remove", function(){n”, “tfig.close_ws(fig, {});n”, “ });n”, “}n”, “n”, “mpl.figure.prototype._canvas_extra_style = function(el){n”, “ // this is important to make the div ‘focusablen”, “ el.attr(‘tabindex’, 0)n”, “ // reach out to IPython and tell the keyboard manager to turn it’s selfn”, “ // off when our div gets focusn”, “n”, “ // location in version 3n”, “ if (IPython.notebook.keyboard_manager) {n”, “ IPython.notebook.keyboard_manager.register_events(el);n”, “ }n”, “ else {n”, “ // location in version 2n”, “ IPython.keyboard_manager.register_events(el);n”, “ }n”, “n”, “}n”, “n”, “mpl.figure.prototype._key_event_extra = function(event, name) {n”, “ var manager = IPython.notebook.keyboard_manager;n”, “ if (!manager)n”, “ manager = IPython.keyboard_manager;n”, “n”, “ // Check for shift+entern”, “ if (event.shiftKey && event.which == 13) {n”, “ this.canvas_div.blur();n”, “ event.shiftKey = false;n”, “ // Send a "J" for go to next celln”, “ event.which = 74;n”, “ event.keyCode = 74;n”, “ manager.command_mode();n”, “ manager.handle_keydown(event);n”, “ }n”, “}n”, “n”, “mpl.figure.prototype.handle_save = function(fig, msg) {n”, “ fig.ondownload(fig, null);n”, “}n”, “n”, “n”, “mpl.find_output_cell = function(html_output) {n”, “ // Return the cell and output element which can be found *uniquely in the notebook.n”, “ // Note - this is a bit hacky, but it is done because the "notebook_saving.Notebook"n”, “ // IPython event is triggered only after the cells have been serialised, which forn”, “ // our purposes (turning an active figure into a static one), is too late.n”, “ var cells = IPython.notebook.get_cells();n”, “ var ncells = cells.length;n”, “ for (var i=0; i<ncells; i++) {n”, “ var cell = cells[i];n”, “ if (cell.cell_type === ‘code’){n”, “ for (var j=0; j<cell.output_area.outputs.length; j++) {n”, “ var data = cell.output_area.outputs[j];n”, “ if (data.data) {n”, “ // IPython >= 3 moved mimebundle to data attribute of outputn”, “ data = data.data;n”, “ }n”, “ if (data[‘text/html’] == html_output) {n”, “ return [cell, data, j];n”, “ }n”, “ }n”, “ }n”, “ }n”, “}n”, “n”, “// Register the function which deals with the matplotlib target/channel.n”, “// The kernel may be null if the page has been refreshed.n”, “if (IPython.notebook.kernel != null) {n”, “ IPython.notebook.kernel.comm_manager.register_target(‘matplotlib’, mpl.mpl_figure_comm);n”, “}n”
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“<IPython.core.display.Javascript object>”
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}, “metadata”: {}, “output_type”: “display_data”
}, {
}
], “source”: [
“block = amp.blocks.Line(X, Y)n”, “anim = amp.Animation([block])n”, “n”, “anim.save_gif("images/line1") # save animation for docsn”, “plt.show()”
]
}, {
“cell_type”: “raw”, “metadata”: {
“raw_mimetype”: “text/restructuredtext”
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“.. image:: images/line1.gif”
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}, {
“cell_type”: “markdown”, “metadata”: {}, “source”: [
“## Adding Interactivityn”, “n”, “We’ll use the same data to make a new animation with interactive controls.”
]
}, {
“cell_type”: “code”, “execution_count”: 4, “metadata”: {
“scrolled”: false
}, “outputs”: [
- {
- “data”: {
- “application/javascript”: [
“/* Put everything inside the global mpl namespace /n”, “window.mpl = {};n”, “n”, “n”, “mpl.get_websocket_type = function() {n”, “ if (typeof(WebSocket) !== ‘undefined’) {n”, “ return WebSocket;n”, “ } else if (typeof(MozWebSocket) !== ‘undefined’) {n”, “ return MozWebSocket;n”, “ } else {n”, “ alert(‘Your browser does not have WebSocket support.’ +n”, “ ‘Please try Chrome, Safari or Firefox ≥ 6. ‘ +n”, “ ‘Firefox 4 and 5 are also supported but you ‘ +n”, “ ‘have to enable WebSockets in about:config.’);n”, “ };n”, “}n”, “n”, “mpl.figure = function(figure_id, websocket, ondownload, parent_element) {n”, “ this.id = figure_id;n”, “n”, “ this.ws = websocket;n”, “n”, “ this.supports_binary = (this.ws.binaryType != undefined);n”, “n”, “ if (!this.supports_binary) {n”, “ var warnings = document.getElementById("mpl-warnings");n”, “ if (warnings) {n”, “ warnings.style.display = ‘block’;n”, “ warnings.textContent = (n”, “ "This browser does not support binary websocket messages. " +n”, “ "Performance may be slow.");n”, “ }n”, “ }n”, “n”, “ this.imageObj = new Image();n”, “n”, “ this.context = undefined;n”, “ this.message = undefined;n”, “ this.canvas = undefined;n”, “ this.rubberband_canvas = undefined;n”, “ this.rubberband_context = undefined;n”, “ this.format_dropdown = undefined;n”, “n”, “ this.image_mode = ‘full’;n”, “n”, “ this.root = $(‘<div/>’);n”, “ this._root_extra_style(this.root)n”, “ this.root.attr(‘style’, ‘display: inline-block’);n”, “n”, “ $(parent_element).append(this.root);n”, “n”, “ this._init_header(this);n”, “ this._init_canvas(this);n”, “ this._init_toolbar(this);n”, “n”, “ var fig = this;n”, “n”, “ this.waiting = false;n”, “n”, “ this.ws.onopen = function () {n”, “ fig.send_message("supports_binary", {value: fig.supports_binary});n”, “ fig.send_message("send_image_mode", {});n”, “ if (mpl.ratio != 1) {n”, “ fig.send_message("set_dpi_ratio", {‘dpi_ratio’: mpl.ratio});n”, “ }n”, “ fig.send_message("refresh", {});n”, “ }n”, “n”, “ this.imageObj.onload = function() {n”, “ if (fig.image_mode == ‘full’) {n”, “ // Full images could contain transparency (where diff imagesn”, “ // almost always do), so we need to clear the canvas so thatn”, “ // there is no ghosting.n”, “ fig.context.clearRect(0, 0, fig.canvas.width, fig.canvas.height);n”, “ }n”, “ fig.context.drawImage(fig.imageObj, 0, 0);n”, “ };n”, “n”, “ this.imageObj.onunload = function() {n”, “ fig.ws.close();n”, “ }n”, “n”, “ this.ws.onmessage = this._make_on_message_function(this);n”, “n”, “ this.ondownload = ondownload;n”, “}n”, “n”, “mpl.figure.prototype._init_header = function() {n”, “ var titlebar = $(n”, “ ‘<div class="ui-dialog-titlebar ui-widget-header ui-corner-all ‘ +n”, “ ‘ui-helper-clearfix"/>’);n”, “ var titletext = $(n”, “ ‘<div class="ui-dialog-title" style="width: 100%; ‘ +n”, “ ‘text-align: center; padding: 3px;"/>’);n”, “ titlebar.append(titletext)n”, “ this.root.append(titlebar);n”, “ this.header = titletext[0];n”, “}n”, “n”, “n”, “n”, “mpl.figure.prototype._canvas_extra_style = function(canvas_div) {n”, “n”, “}n”, “n”, “n”, “mpl.figure.prototype._root_extra_style = function(canvas_div) {n”, “n”, “}n”, “n”, “mpl.figure.prototype._init_canvas = function() {n”, “ var fig = this;n”, “n”, “ var canvas_div = $(‘<div/>’);n”, “n”, “ canvas_div.attr(‘style’, ‘position: relative; clear: both; outline: 0’);n”, “n”, “ function canvas_keyboard_event(event) {n”, “ return fig.key_event(event, event[‘data’]);n”, “ }n”, “n”, “ canvas_div.keydown(‘key_press’, canvas_keyboard_event);n”, “ canvas_div.keyup(‘key_release’, canvas_keyboard_event);n”, “ this.canvas_div = canvas_divn”, “ this._canvas_extra_style(canvas_div)n”, “ this.root.append(canvas_div);n”, “n”, “ var canvas = $(‘<canvas/>’);n”, “ canvas.addClass(‘mpl-canvas’);n”, “ canvas.attr(‘style’, "left: 0; top: 0; z-index: 0; outline: 0")n”, “n”, “ this.canvas = canvas[0];n”, “ this.context = canvas[0].getContext("2d");n”, “n”, “ var backingStore = this.context.backingStorePixelRatio ||n”, “tthis.context.webkitBackingStorePixelRatio ||n”, “tthis.context.mozBackingStorePixelRatio ||n”, “tthis.context.msBackingStorePixelRatio ||n”, “tthis.context.oBackingStorePixelRatio ||n”, “tthis.context.backingStorePixelRatio || 1;n”, “n”, “ mpl.ratio = (window.devicePixelRatio || 1) / backingStore;n”, “n”, “ var rubberband = $(‘<canvas/>’);n”, “ rubberband.attr(‘style’, "position: absolute; left: 0; top: 0; z-index: 1;")n”, “n”, “ var pass_mouse_events = true;n”, “n”, “ canvas_div.resizable({n”, “ start: function(event, ui) {n”, “ pass_mouse_events = false;n”, “ },n”, “ resize: function(event, ui) {n”, “ fig.request_resize(ui.size.width, ui.size.height);n”, “ },n”, “ stop: function(event, ui) {n”, “ pass_mouse_events = true;n”, “ fig.request_resize(ui.size.width, ui.size.height);n”, “ },n”, “ });n”, “n”, “ function mouse_event_fn(event) {n”, “ if (pass_mouse_events)n”, “ return fig.mouse_event(event, event[‘data’]);n”, “ }n”, “n”, “ rubberband.mousedown(‘button_press’, mouse_event_fn);n”, “ rubberband.mouseup(‘button_release’, mouse_event_fn);n”, “ // Throttle sequential mouse events to 1 every 20ms.n”, “ rubberband.mousemove(‘motion_notify’, mouse_event_fn);n”, “n”, “ rubberband.mouseenter(‘figure_enter’, mouse_event_fn);n”, “ rubberband.mouseleave(‘figure_leave’, mouse_event_fn);n”, “n”, “ canvas_div.on("wheel", function (event) {n”, “ event = event.originalEvent;n”, “ event[‘data’] = ‘scroll’n”, “ if (event.deltaY < 0) {n”, “ event.step = 1;n”, “ } else {n”, “ event.step = -1;n”, “ }n”, “ mouse_event_fn(event);n”, “ });n”, “n”, “ canvas_div.append(canvas);n”, “ canvas_div.append(rubberband);n”, “n”, “ this.rubberband = rubberband;n”, “ this.rubberband_canvas = rubberband[0];n”, “ this.rubberband_context = rubberband[0].getContext("2d");n”, “ this.rubberband_context.strokeStyle = "#000000";n”, “n”, “ this._resize_canvas = function(width, height) {n”, “ // Keep the size of the canvas, canvas container, and rubber bandn”, “ // canvas in synch.n”, “ canvas_div.css(‘width’, width)n”, “ canvas_div.css(‘height’, height)n”, “n”, “ canvas.attr(‘width’, width * mpl.ratio);n”, “ canvas.attr(‘height’, height * mpl.ratio);n”, “ canvas.attr(‘style’, ‘width: ‘ + width + ‘px; height: ‘ + height + ‘px;’);n”, “n”, “ rubberband.attr(‘width’, width);n”, “ rubberband.attr(‘height’, height);n”, “ }n”, “n”, “ // Set the figure to an initial 600x600px, this will subsequently be updatedn”, “ // upon first draw.n”, “ this._resize_canvas(600, 600);n”, “n”, “ // Disable right mouse context menu.n”, “ $(this.rubberband_canvas).bind("contextmenu",function(e){n”, “ return false;n”, “ });n”, “n”, “ function set_focus () {n”, “ canvas.focus();n”, “ canvas_div.focus();n”, “ }n”, “n”, “ window.setTimeout(set_focus, 100);n”, “}n”, “n”, “mpl.figure.prototype._init_toolbar = function() {n”, “ var fig = this;n”, “n”, “ var nav_element = $(‘<div/>’)n”, “ nav_element.attr(‘style’, ‘width: 100%’);n”, “ this.root.append(nav_element);n”, “n”, “ // Define a callback function for later on.n”, “ function toolbar_event(event) {n”, “ return fig.toolbar_button_onclick(event[‘data’]);n”, “ }n”, “ function toolbar_mouse_event(event) {n”, “ return fig.toolbar_button_onmouseover(event[‘data’]);n”, “ }n”, “n”, “ for(var toolbar_ind in mpl.toolbar_items) {n”, “ var name = mpl.toolbar_items[toolbar_ind][0];n”, “ var tooltip = mpl.toolbar_items[toolbar_ind][1];n”, “ var image = mpl.toolbar_items[toolbar_ind][2];n”, “ var method_name = mpl.toolbar_items[toolbar_ind][3];n”, “n”, “ if (!name) {n”, “ // put a spacer in here.n”, “ continue;n”, “ }n”, “ var button = $(‘<button/>’);n”, “ button.addClass(‘ui-button ui-widget ui-state-default ui-corner-all ‘ +n”, “ ‘ui-button-icon-only’);n”, “ button.attr(‘role’, ‘button’);n”, “ button.attr(‘aria-disabled’, ‘false’);n”, “ button.click(method_name, toolbar_event);n”, “ button.mouseover(tooltip, toolbar_mouse_event);n”, “n”, “ var icon_img = $(‘<span/>’);n”, “ icon_img.addClass(‘ui-button-icon-primary ui-icon’);n”, “ icon_img.addClass(image);n”, “ icon_img.addClass(‘ui-corner-all’);n”, “n”, “ var tooltip_span = $(‘<span/>’);n”, “ tooltip_span.addClass(‘ui-button-text’);n”, “ tooltip_span.html(tooltip);n”, “n”, “ button.append(icon_img);n”, “ button.append(tooltip_span);n”, “n”, “ nav_element.append(button);n”, “ }n”, “n”, “ var fmt_picker_span = $(‘<span/>’);n”, “n”, “ var fmt_picker = $(‘<select/>’);n”, “ fmt_picker.addClass(‘mpl-toolbar-option ui-widget ui-widget-content’);n”, “ fmt_picker_span.append(fmt_picker);n”, “ nav_element.append(fmt_picker_span);n”, “ this.format_dropdown = fmt_picker[0];n”, “n”, “ for (var ind in mpl.extensions) {n”, “ var fmt = mpl.extensions[ind];n”, “ var option = $(n”, “ ‘<option/>’, {selected: fmt === mpl.default_extension}).html(fmt);n”, “ fmt_picker.append(option)n”, “ }n”, “n”, “ // Add hover states to the ui-buttonsn”, “ $( ".ui-button" ).hover(n”, “ function() { $(this).addClass("ui-state-hover");},n”, “ function() { $(this).removeClass("ui-state-hover");}n”, “ );n”, “n”, “ var status_bar = $(‘<span class="mpl-message"/>’);n”, “ nav_element.append(status_bar);n”, “ this.message = status_bar[0];n”, “}n”, “n”, “mpl.figure.prototype.request_resize = function(x_pixels, y_pixels) {n”, “ // Request matplotlib to resize the figure. Matplotlib will then trigger a resize in the client,n”, “ // which will in turn request a refresh of the image.n”, “ this.send_message(‘resize’, {‘width’: x_pixels, ‘height’: y_pixels});n”, “}n”, “n”, “mpl.figure.prototype.send_message = function(type, properties) {n”, “ properties[‘type’] = type;n”, “ properties[‘figure_id’] = this.id;n”, “ this.ws.send(JSON.stringify(properties));n”, “}n”, “n”, “mpl.figure.prototype.send_draw_message = function() {n”, “ if (!this.waiting) {n”, “ this.waiting = true;n”, “ this.ws.send(JSON.stringify({type: "draw", figure_id: this.id}));n”, “ }n”, “}n”, “n”, “n”, “mpl.figure.prototype.handle_save = function(fig, msg) {n”, “ var format_dropdown = fig.format_dropdown;n”, “ var format = format_dropdown.options[format_dropdown.selectedIndex].value;n”, “ fig.ondownload(fig, format);n”, “}n”, “n”, “n”, “mpl.figure.prototype.handle_resize = function(fig, msg) {n”, “ var size = msg[‘size’];n”, “ if (size[0] != fig.canvas.width || size[1] != fig.canvas.height) {n”, “ fig._resize_canvas(size[0], size[1]);n”, “ fig.send_message("refresh", {});n”, “ };n”, “}n”, “n”, “mpl.figure.prototype.handle_rubberband = function(fig, msg) {n”, “ var x0 = msg[‘x0’] / mpl.ratio;n”, “ var y0 = (fig.canvas.height - msg[‘y0’]) / mpl.ratio;n”, “ var x1 = msg[‘x1’] / mpl.ratio;n”, “ var y1 = (fig.canvas.height - msg[‘y1’]) / mpl.ratio;n”, “ x0 = Math.floor(x0) + 0.5;n”, “ y0 = Math.floor(y0) + 0.5;n”, “ x1 = Math.floor(x1) + 0.5;n”, “ y1 = Math.floor(y1) + 0.5;n”, “ var min_x = Math.min(x0, x1);n”, “ var min_y = Math.min(y0, y1);n”, “ var width = Math.abs(x1 - x0);n”, “ var height = Math.abs(y1 - y0);n”, “n”, “ fig.rubberband_context.clearRect(n”, “ 0, 0, fig.canvas.width, fig.canvas.height);n”, “n”, “ fig.rubberband_context.strokeRect(min_x, min_y, width, height);n”, “}n”, “n”, “mpl.figure.prototype.handle_figure_label = function(fig, msg) {n”, “ // Updates the figure title.n”, “ fig.header.textContent = msg[‘label’];n”, “}n”, “n”, “mpl.figure.prototype.handle_cursor = function(fig, msg) {n”, “ var cursor = msg[‘cursor’];n”, “ switch(cursor)n”, “ {n”, “ case 0:n”, “ cursor = ‘pointer’;n”, “ break;n”, “ case 1:n”, “ cursor = ‘default’;n”, “ break;n”, “ case 2:n”, “ cursor = ‘crosshair’;n”, “ break;n”, “ case 3:n”, “ cursor = ‘move’;n”, “ break;n”, “ }n”, “ fig.rubberband_canvas.style.cursor = cursor;n”, “}n”, “n”, “mpl.figure.prototype.handle_message = function(fig, msg) {n”, “ fig.message.textContent = msg[‘message’];n”, “}n”, “n”, “mpl.figure.prototype.handle_draw = function(fig, msg) {n”, “ // Request the server to send over a new figure.n”, “ fig.send_draw_message();n”, “}n”, “n”, “mpl.figure.prototype.handle_image_mode = function(fig, msg) {n”, “ fig.image_mode = msg[‘mode’];n”, “}n”, “n”, “mpl.figure.prototype.updated_canvas_event = function() {n”, “ // Called whenever the canvas gets updated.n”, “ this.send_message("ack", {});n”, “}n”, “n”, “// A function to construct a web socket function for onmessage handling.n”, “// Called in the figure constructor.n”, “mpl.figure.prototype._make_on_message_function = function(fig) {n”, “ return function socket_on_message(evt) {n”, “ if (evt.data instanceof Blob) {n”, “ / FIXME: We get "Resource interpreted as Image butn”, “ * transferred with MIME type text/plain:" errors onn”, “ * Chrome. But how to set the MIME type? It doesn’t seemn”, “ * to be part of the websocket stream /n”, “ evt.data.type = "image/png";n”, “n”, “ / Free the memory for the previous frames /n”, “ if (fig.imageObj.src) {n”, “ (window.URL || window.webkitURL).revokeObjectURL(n”, “ fig.imageObj.src);n”, “ }n”, “n”, “ fig.imageObj.src = (window.URL || window.webkitURL).createObjectURL(n”, “ evt.data);n”, “ fig.updated_canvas_event();n”, “ fig.waiting = false;n”, “ return;n”, “ }n”, “ else if (typeof evt.data === ‘string’ && evt.data.slice(0, 21) == "data:image/png;base64") {n”, “ fig.imageObj.src = evt.data;n”, “ fig.updated_canvas_event();n”, “ fig.waiting = false;n”, “ return;n”, “ }n”, “n”, “ var msg = JSON.parse(evt.data);n”, “ var msg_type = msg[‘type’];n”, “n”, “ // Call the "handle_{type}" callback, which takesn”, “ // the figure and JSON message as its only arguments.n”, “ try {n”, “ var callback = fig["handle_" + msg_type];n”, “ } catch (e) {n”, “ console.log("No handler for the ‘" + msg_type + "’ message type: ", msg);n”, “ return;n”, “ }n”, “n”, “ if (callback) {n”, “ try {n”, “ // console.log("Handling ‘" + msg_type + "’ message: ", msg);n”, “ callback(fig, msg);n”, “ } catch (e) {n”, “ console.log("Exception inside the ‘handler_" + msg_type + "’ callback:", e, e.stack, msg);n”, “ }n”, “ }n”, “ };n”, “}n”, “n”, “// from http://stackoverflow.com/questions/1114465/getting-mouse-location-in-canvasn”, “mpl.findpos = function(e) {n”, “ //this section is from http://www.quirksmode.org/js/events_properties.htmln”, “ var targ;n”, “ if (!e)n”, “ e = window.event;n”, “ if (e.target)n”, “ targ = e.target;n”, “ else if (e.srcElement)n”, “ targ = e.srcElement;n”, “ if (targ.nodeType == 3) // defeat Safari bugn”, “ targ = targ.parentNode;n”, “n”, “ // jQuery normalizes the pageX and pageYn”, “ // pageX,Y are the mouse positions relative to the documentn”, “ // offset() returns the position of the element relative to the documentn”, “ var x = e.pageX - $(targ).offset().left;n”, “ var y = e.pageY - $(targ).offset().top;n”, “n”, “ return {"x": x, "y": y};n”, “};n”, “n”, “/n”, “ * return a copy of an object with only non-object keysn”, “ * we need this to avoid circular referencesn”, “ * http://stackoverflow.com/a/24161582/3208463n”, “ /n”, “function simpleKeys (original) {n”, “ return Object.keys(original).reduce(function (obj, key) {n”, “ if (typeof original[key] !== ‘object’)n”, “ obj[key] = original[key]n”, “ return obj;n”, “ }, {});n”, “}n”, “n”, “mpl.figure.prototype.mouse_event = function(event, name) {n”, “ var canvas_pos = mpl.findpos(event)n”, “n”, “ if (name === ‘button_press’)n”, “ {n”, “ this.canvas.focus();n”, “ this.canvas_div.focus();n”, “ }n”, “n”, “ var x = canvas_pos.x * mpl.ratio;n”, “ var y = canvas_pos.y * mpl.ratio;n”, “n”, “ this.send_message(name, {x: x, y: y, button: event.button,n”, “ step: event.step,n”, “ guiEvent: simpleKeys(event)});n”, “n”, “ / This prevents the web browser from automatically changing ton”, “ * the text insertion cursor when the button is pressed. We wantn”, “ * to control all of the cursor setting manually through then”, “ * ‘cursor’ event from matplotlib /n”, “ event.preventDefault();n”, “ return false;n”, “}n”, “n”, “mpl.figure.prototype._key_event_extra = function(event, name) {n”, “ // Handle any extra behaviour associated with a key eventn”, “}n”, “n”, “mpl.figure.prototype.key_event = function(event, name) {n”, “n”, “ // Prevent repeat eventsn”, “ if (name == ‘key_press’)n”, “ {n”, “ if (event.which === this._key)n”, “ return;n”, “ elsen”, “ this._key = event.which;n”, “ }n”, “ if (name == ‘key_release’)n”, “ this._key = null;n”, “n”, “ var value = ‘’;n”, “ if (event.ctrlKey && event.which != 17)n”, “ value += "ctrl+";n”, “ if (event.altKey && event.which != 18)n”, “ value += "alt+";n”, “ if (event.shiftKey && event.which != 16)n”, “ value += "shift+";n”, “n”, “ value += ‘k’;n”, “ value += event.which.toString();n”, “n”, “ this._key_event_extra(event, name);n”, “n”, “ this.send_message(name, {key: value,n”, “ guiEvent: simpleKeys(event)});n”, “ return false;n”, “}n”, “n”, “mpl.figure.prototype.toolbar_button_onclick = function(name) {n”, “ if (name == ‘download’) {n”, “ this.handle_save(this, null);n”, “ } else {n”, “ this.send_message("toolbar_button", {name: name});n”, “ }n”, “};n”, “n”, “mpl.figure.prototype.toolbar_button_onmouseover = function(tooltip) {n”, “ this.message.textContent = tooltip;n”, “};n”, “mpl.toolbar_items = [["Home", "Reset original view", "fa fa-home icon-home", "home"], ["Back", "Back to previous view", "fa fa-arrow-left icon-arrow-left", "back"], ["Forward", "Forward to next view", "fa fa-arrow-right icon-arrow-right", "forward"], ["", "", "", ""], ["Pan", "Pan axes with left mouse, zoom with right", "fa fa-arrows icon-move", "pan"], ["Zoom", "Zoom to rectangle", "fa fa-square-o icon-check-empty", "zoom"], ["", "", "", ""], ["Download", "Download plot", "fa fa-floppy-o icon-save", "download"]];n”, “n”, “mpl.extensions = ["eps", "jpeg", "pdf", "png", "ps", "raw", "svg", "tif"];n”, “n”, “mpl.default_extension = "png";var comm_websocket_adapter = function(comm) {n”, “ // Create a "websocket"-like object which calls the given IPython commn”, “ // object with the appropriate methods. Currently this is a non binaryn”, “ // socket, so there is still some room for performance tuning.n”, “ var ws = {};n”, “n”, “ ws.close = function() {n”, “ comm.close()n”, “ };n”, “ ws.send = function(m) {n”, “ //console.log(‘sending’, m);n”, “ comm.send(m);n”, “ };n”, “ // Register the callback with on_msg.n”, “ comm.on_msg(function(msg) {n”, “ //console.log(‘receiving’, msg[‘content’][‘data’], msg);n”, “ // Pass the mpl event to the overridden (by mpl) onmessage function.n”, “ ws.onmessage(msg[‘content’][‘data’])n”, “ });n”, “ return ws;n”, “}n”, “n”, “mpl.mpl_figure_comm = function(comm, msg) {n”, “ // This is the function which gets called when the mpl processn”, “ // starts-up an IPython Comm through the "matplotlib" channel.n”, “n”, “ var id = msg.content.data.id;n”, “ // Get hold of the div created by the display call when the Commn”, “ // socket was opened in Python.n”, “ var element = $("#" + id);n”, “ var ws_proxy = comm_websocket_adapter(comm)n”, “n”, “ function ondownload(figure, format) {n”, “ window.open(figure.imageObj.src);n”, “ }n”, “n”, “ var fig = new mpl.figure(id, ws_proxy,n”, “ ondownload,n”, “ element.get(0));n”, “n”, “ // Call onopen now - mpl needs it, as it is assuming we’ve passed it a realn”, “ // web socket which is closed, not our websocket->open comm proxy.n”, “ ws_proxy.onopen();n”, “n”, “ fig.parent_element = element.get(0);n”, “ fig.cell_info = mpl.find_output_cell("<div id=’" + id + "’></div>");n”, “ if (!fig.cell_info) {n”, “ console.error("Failed to find cell for figure", id, fig);n”, “ return;n”, “ }n”, “n”, “ var output_index = fig.cell_info[2]n”, “ var cell = fig.cell_info[0];n”, “n”, “};n”, “n”, “mpl.figure.prototype.handle_close = function(fig, msg) {n”, “ var width = fig.canvas.width/mpl.ration”, “ fig.root.unbind(‘remove’)n”, “n”, “ // Update the output cell to use the data from the current canvas.n”, “ fig.push_to_output();n”, “ var dataURL = fig.canvas.toDataURL();n”, “ // Re-enable the keyboard manager in IPython - without this line, in FF,n”, “ // the notebook keyboard shortcuts fail.n”, “ IPython.keyboard_manager.enable()n”, “ $(fig.parent_element).html(‘<img src="’ + dataURL + ‘" width="’ + width + ‘">’);n”, “ fig.close_ws(fig, msg);n”, “}n”, “n”, “mpl.figure.prototype.close_ws = function(fig, msg){n”, “ fig.send_message(‘closing’, msg);n”, “ // fig.ws.close()n”, “}n”, “n”, “mpl.figure.prototype.push_to_output = function(remove_interactive) {n”, “ // Turn the data on the canvas into data in the output cell.n”, “ var width = this.canvas.width/mpl.ration”, “ var dataURL = this.canvas.toDataURL();n”, “ this.cell_info[1][‘text/html’] = ‘<img src="’ + dataURL + ‘" width="’ + width + ‘">’;n”, “}n”, “n”, “mpl.figure.prototype.updated_canvas_event = function() {n”, “ // Tell IPython that the notebook contents must change.n”, “ IPython.notebook.set_dirty(true);n”, “ this.send_message("ack", {});n”, “ var fig = this;n”, “ // Wait a second, then push the new image to the DOM son”, “ // that it is saved nicely (might be nice to debounce this).n”, “ setTimeout(function () { fig.push_to_output() }, 1000);n”, “}n”, “n”, “mpl.figure.prototype._init_toolbar = function() {n”, “ var fig = this;n”, “n”, “ var nav_element = $(‘<div/>’)n”, “ nav_element.attr(‘style’, ‘width: 100%’);n”, “ this.root.append(nav_element);n”, “n”, “ // Define a callback function for later on.n”, “ function toolbar_event(event) {n”, “ return fig.toolbar_button_onclick(event[‘data’]);n”, “ }n”, “ function toolbar_mouse_event(event) {n”, “ return fig.toolbar_button_onmouseover(event[‘data’]);n”, “ }n”, “n”, “ for(var toolbar_ind in mpl.toolbar_items){n”, “ var name = mpl.toolbar_items[toolbar_ind][0];n”, “ var tooltip = mpl.toolbar_items[toolbar_ind][1];n”, “ var image = mpl.toolbar_items[toolbar_ind][2];n”, “ var method_name = mpl.toolbar_items[toolbar_ind][3];n”, “n”, “ if (!name) { continue; };n”, “n”, “ var button = $(‘<button class="btn btn-default" href="#" title="’ + name + ‘"><i class="fa ‘ + image + ‘ fa-lg"></i></button>’);n”, “ button.click(method_name, toolbar_event);n”, “ button.mouseover(tooltip, toolbar_mouse_event);n”, “ nav_element.append(button);n”, “ }n”, “n”, “ // Add the status bar.n”, “ var status_bar = $(‘<span class="mpl-message" style="text-align:right; float: right;"/>’);n”, “ nav_element.append(status_bar);n”, “ this.message = status_bar[0];n”, “n”, “ // Add the close button to the window.n”, “ var buttongrp = $(‘<div class="btn-group inline pull-right"></div>’);n”, “ var button = $(‘<button class="btn btn-mini btn-primary" href="#" title="Stop Interaction"><i class="fa fa-power-off icon-remove icon-large"></i></button>’);n”, “ button.click(function (evt) { fig.handle_close(fig, {}); } );n”, “ button.mouseover(‘Stop Interaction’, toolbar_mouse_event);n”, “ buttongrp.append(button);n”, “ var titlebar = this.root.find($(‘.ui-dialog-titlebar’));n”, “ titlebar.prepend(buttongrp);n”, “}n”, “n”, “mpl.figure.prototype._root_extra_style = function(el){n”, “ var fig = thisn”, “ el.on("remove", function(){n”, “tfig.close_ws(fig, {});n”, “ });n”, “}n”, “n”, “mpl.figure.prototype._canvas_extra_style = function(el){n”, “ // this is important to make the div ‘focusablen”, “ el.attr(‘tabindex’, 0)n”, “ // reach out to IPython and tell the keyboard manager to turn it’s selfn”, “ // off when our div gets focusn”, “n”, “ // location in version 3n”, “ if (IPython.notebook.keyboard_manager) {n”, “ IPython.notebook.keyboard_manager.register_events(el);n”, “ }n”, “ else {n”, “ // location in version 2n”, “ IPython.keyboard_manager.register_events(el);n”, “ }n”, “n”, “}n”, “n”, “mpl.figure.prototype._key_event_extra = function(event, name) {n”, “ var manager = IPython.notebook.keyboard_manager;n”, “ if (!manager)n”, “ manager = IPython.keyboard_manager;n”, “n”, “ // Check for shift+entern”, “ if (event.shiftKey && event.which == 13) {n”, “ this.canvas_div.blur();n”, “ event.shiftKey = false;n”, “ // Send a "J" for go to next celln”, “ event.which = 74;n”, “ event.keyCode = 74;n”, “ manager.command_mode();n”, “ manager.handle_keydown(event);n”, “ }n”, “}n”, “n”, “mpl.figure.prototype.handle_save = function(fig, msg) {n”, “ fig.ondownload(fig, null);n”, “}n”, “n”, “n”, “mpl.find_output_cell = function(html_output) {n”, “ // Return the cell and output element which can be found *uniquely in the notebook.n”, “ // Note - this is a bit hacky, but it is done because the "notebook_saving.Notebook"n”, “ // IPython event is triggered only after the cells have been serialised, which forn”, “ // our purposes (turning an active figure into a static one), is too late.n”, “ var cells = IPython.notebook.get_cells();n”, “ var ncells = cells.length;n”, “ for (var i=0; i<ncells; i++) {n”, “ var cell = cells[i];n”, “ if (cell.cell_type === ‘code’){n”, “ for (var j=0; j<cell.output_area.outputs.length; j++) {n”, “ var data = cell.output_area.outputs[j];n”, “ if (data.data) {n”, “ // IPython >= 3 moved mimebundle to data attribute of outputn”, “ data = data.data;n”, “ }n”, “ if (data[‘text/html’] == html_output) {n”, “ return [cell, data, j];n”, “ }n”, “ }n”, “ }n”, “ }n”, “}n”, “n”, “// Register the function which deals with the matplotlib target/channel.n”, “// The kernel may be null if the page has been refreshed.n”, “if (IPython.notebook.kernel != null) {n”, “ IPython.notebook.kernel.comm_manager.register_target(‘matplotlib’, mpl.mpl_figure_comm);n”, “}n”
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“<IPython.core.display.Javascript object>”
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], “source”: [
“block = amp.blocks.Line(X, Y)n”, “anim = amp.Animation([block])n”, “n”, “anim.controls() # creates a timeline_slider and a play/pause togglen”, “anim.save_gif("images/line2") # save animation for docsn”, “plt.show()”
]
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“.. image:: images/line2.gif”
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“cell_type”: “markdown”, “metadata”: {}, “source”: [
“## Displaying the Timen”, “n”, “The above animation didn’t display the time properly because we didn’t tell animatplot what the values of time are. Instead it displayed the frame number. We can simply pass our values of time into our call to
`Animation`
.”]
}, {
“cell_type”: “code”, “execution_count”: 5, “metadata”: {}, “outputs”: [
- {
- “data”: {
- “application/javascript”: [
“/* Put everything inside the global mpl namespace /n”, “window.mpl = {};n”, “n”, “n”, “mpl.get_websocket_type = function() {n”, “ if (typeof(WebSocket) !== ‘undefined’) {n”, “ return WebSocket;n”, “ } else if (typeof(MozWebSocket) !== ‘undefined’) {n”, “ return MozWebSocket;n”, “ } else {n”, “ alert(‘Your browser does not have WebSocket support.’ +n”, “ ‘Please try Chrome, Safari or Firefox ≥ 6. ‘ +n”, “ ‘Firefox 4 and 5 are also supported but you ‘ +n”, “ ‘have to enable WebSockets in about:config.’);n”, “ };n”, “}n”, “n”, “mpl.figure = function(figure_id, websocket, ondownload, parent_element) {n”, “ this.id = figure_id;n”, “n”, “ this.ws = websocket;n”, “n”, “ this.supports_binary = (this.ws.binaryType != undefined);n”, “n”, “ if (!this.supports_binary) {n”, “ var warnings = document.getElementById("mpl-warnings");n”, “ if (warnings) {n”, “ warnings.style.display = ‘block’;n”, “ warnings.textContent = (n”, “ "This browser does not support binary websocket messages. " +n”, “ "Performance may be slow.");n”, “ }n”, “ }n”, “n”, “ this.imageObj = new Image();n”, “n”, “ this.context = undefined;n”, “ this.message = undefined;n”, “ this.canvas = undefined;n”, “ this.rubberband_canvas = undefined;n”, “ this.rubberband_context = undefined;n”, “ this.format_dropdown = undefined;n”, “n”, “ this.image_mode = ‘full’;n”, “n”, “ this.root = $(‘<div/>’);n”, “ this._root_extra_style(this.root)n”, “ this.root.attr(‘style’, ‘display: inline-block’);n”, “n”, “ $(parent_element).append(this.root);n”, “n”, “ this._init_header(this);n”, “ this._init_canvas(this);n”, “ this._init_toolbar(this);n”, “n”, “ var fig = this;n”, “n”, “ this.waiting = false;n”, “n”, “ this.ws.onopen = function () {n”, “ fig.send_message("supports_binary", {value: fig.supports_binary});n”, “ fig.send_message("send_image_mode", {});n”, “ if (mpl.ratio != 1) {n”, “ fig.send_message("set_dpi_ratio", {‘dpi_ratio’: mpl.ratio});n”, “ }n”, “ fig.send_message("refresh", {});n”, “ }n”, “n”, “ this.imageObj.onload = function() {n”, “ if (fig.image_mode == ‘full’) {n”, “ // Full images could contain transparency (where diff imagesn”, “ // almost always do), so we need to clear the canvas so thatn”, “ // there is no ghosting.n”, “ fig.context.clearRect(0, 0, fig.canvas.width, fig.canvas.height);n”, “ }n”, “ fig.context.drawImage(fig.imageObj, 0, 0);n”, “ };n”, “n”, “ this.imageObj.onunload = function() {n”, “ fig.ws.close();n”, “ }n”, “n”, “ this.ws.onmessage = this._make_on_message_function(this);n”, “n”, “ this.ondownload = ondownload;n”, “}n”, “n”, “mpl.figure.prototype._init_header = function() {n”, “ var titlebar = $(n”, “ ‘<div class="ui-dialog-titlebar ui-widget-header ui-corner-all ‘ +n”, “ ‘ui-helper-clearfix"/>’);n”, “ var titletext = $(n”, “ ‘<div class="ui-dialog-title" style="width: 100%; ‘ +n”, “ ‘text-align: center; padding: 3px;"/>’);n”, “ titlebar.append(titletext)n”, “ this.root.append(titlebar);n”, “ this.header = titletext[0];n”, “}n”, “n”, “n”, “n”, “mpl.figure.prototype._canvas_extra_style = function(canvas_div) {n”, “n”, “}n”, “n”, “n”, “mpl.figure.prototype._root_extra_style = function(canvas_div) {n”, “n”, “}n”, “n”, “mpl.figure.prototype._init_canvas = function() {n”, “ var fig = this;n”, “n”, “ var canvas_div = $(‘<div/>’);n”, “n”, “ canvas_div.attr(‘style’, ‘position: relative; clear: both; outline: 0’);n”, “n”, “ function canvas_keyboard_event(event) {n”, “ return fig.key_event(event, event[‘data’]);n”, “ }n”, “n”, “ canvas_div.keydown(‘key_press’, canvas_keyboard_event);n”, “ canvas_div.keyup(‘key_release’, canvas_keyboard_event);n”, “ this.canvas_div = canvas_divn”, “ this._canvas_extra_style(canvas_div)n”, “ this.root.append(canvas_div);n”, “n”, “ var canvas = $(‘<canvas/>’);n”, “ canvas.addClass(‘mpl-canvas’);n”, “ canvas.attr(‘style’, "left: 0; top: 0; z-index: 0; outline: 0")n”, “n”, “ this.canvas = canvas[0];n”, “ this.context = canvas[0].getContext("2d");n”, “n”, “ var backingStore = this.context.backingStorePixelRatio ||n”, “tthis.context.webkitBackingStorePixelRatio ||n”, “tthis.context.mozBackingStorePixelRatio ||n”, “tthis.context.msBackingStorePixelRatio ||n”, “tthis.context.oBackingStorePixelRatio ||n”, “tthis.context.backingStorePixelRatio || 1;n”, “n”, “ mpl.ratio = (window.devicePixelRatio || 1) / backingStore;n”, “n”, “ var rubberband = $(‘<canvas/>’);n”, “ rubberband.attr(‘style’, "position: absolute; left: 0; top: 0; z-index: 1;")n”, “n”, “ var pass_mouse_events = true;n”, “n”, “ canvas_div.resizable({n”, “ start: function(event, ui) {n”, “ pass_mouse_events = false;n”, “ },n”, “ resize: function(event, ui) {n”, “ fig.request_resize(ui.size.width, ui.size.height);n”, “ },n”, “ stop: function(event, ui) {n”, “ pass_mouse_events = true;n”, “ fig.request_resize(ui.size.width, ui.size.height);n”, “ },n”, “ });n”, “n”, “ function mouse_event_fn(event) {n”, “ if (pass_mouse_events)n”, “ return fig.mouse_event(event, event[‘data’]);n”, “ }n”, “n”, “ rubberband.mousedown(‘button_press’, mouse_event_fn);n”, “ rubberband.mouseup(‘button_release’, mouse_event_fn);n”, “ // Throttle sequential mouse events to 1 every 20ms.n”, “ rubberband.mousemove(‘motion_notify’, mouse_event_fn);n”, “n”, “ rubberband.mouseenter(‘figure_enter’, mouse_event_fn);n”, “ rubberband.mouseleave(‘figure_leave’, mouse_event_fn);n”, “n”, “ canvas_div.on("wheel", function (event) {n”, “ event = event.originalEvent;n”, “ event[‘data’] = ‘scroll’n”, “ if (event.deltaY < 0) {n”, “ event.step = 1;n”, “ } else {n”, “ event.step = -1;n”, “ }n”, “ mouse_event_fn(event);n”, “ });n”, “n”, “ canvas_div.append(canvas);n”, “ canvas_div.append(rubberband);n”, “n”, “ this.rubberband = rubberband;n”, “ this.rubberband_canvas = rubberband[0];n”, “ this.rubberband_context = rubberband[0].getContext("2d");n”, “ this.rubberband_context.strokeStyle = "#000000";n”, “n”, “ this._resize_canvas = function(width, height) {n”, “ // Keep the size of the canvas, canvas container, and rubber bandn”, “ // canvas in synch.n”, “ canvas_div.css(‘width’, width)n”, “ canvas_div.css(‘height’, height)n”, “n”, “ canvas.attr(‘width’, width * mpl.ratio);n”, “ canvas.attr(‘height’, height * mpl.ratio);n”, “ canvas.attr(‘style’, ‘width: ‘ + width + ‘px; height: ‘ + height + ‘px;’);n”, “n”, “ rubberband.attr(‘width’, width);n”, “ rubberband.attr(‘height’, height);n”, “ }n”, “n”, “ // Set the figure to an initial 600x600px, this will subsequently be updatedn”, “ // upon first draw.n”, “ this._resize_canvas(600, 600);n”, “n”, “ // Disable right mouse context menu.n”, “ $(this.rubberband_canvas).bind("contextmenu",function(e){n”, “ return false;n”, “ });n”, “n”, “ function set_focus () {n”, “ canvas.focus();n”, “ canvas_div.focus();n”, “ }n”, “n”, “ window.setTimeout(set_focus, 100);n”, “}n”, “n”, “mpl.figure.prototype._init_toolbar = function() {n”, “ var fig = this;n”, “n”, “ var nav_element = $(‘<div/>’)n”, “ nav_element.attr(‘style’, ‘width: 100%’);n”, “ this.root.append(nav_element);n”, “n”, “ // Define a callback function for later on.n”, “ function toolbar_event(event) {n”, “ return fig.toolbar_button_onclick(event[‘data’]);n”, “ }n”, “ function toolbar_mouse_event(event) {n”, “ return fig.toolbar_button_onmouseover(event[‘data’]);n”, “ }n”, “n”, “ for(var toolbar_ind in mpl.toolbar_items) {n”, “ var name = mpl.toolbar_items[toolbar_ind][0];n”, “ var tooltip = mpl.toolbar_items[toolbar_ind][1];n”, “ var image = mpl.toolbar_items[toolbar_ind][2];n”, “ var method_name = mpl.toolbar_items[toolbar_ind][3];n”, “n”, “ if (!name) {n”, “ // put a spacer in here.n”, “ continue;n”, “ }n”, “ var button = $(‘<button/>’);n”, “ button.addClass(‘ui-button ui-widget ui-state-default ui-corner-all ‘ +n”, “ ‘ui-button-icon-only’);n”, “ button.attr(‘role’, ‘button’);n”, “ button.attr(‘aria-disabled’, ‘false’);n”, “ button.click(method_name, toolbar_event);n”, “ button.mouseover(tooltip, toolbar_mouse_event);n”, “n”, “ var icon_img = $(‘<span/>’);n”, “ icon_img.addClass(‘ui-button-icon-primary ui-icon’);n”, “ icon_img.addClass(image);n”, “ icon_img.addClass(‘ui-corner-all’);n”, “n”, “ var tooltip_span = $(‘<span/>’);n”, “ tooltip_span.addClass(‘ui-button-text’);n”, “ tooltip_span.html(tooltip);n”, “n”, “ button.append(icon_img);n”, “ button.append(tooltip_span);n”, “n”, “ nav_element.append(button);n”, “ }n”, “n”, “ var fmt_picker_span = $(‘<span/>’);n”, “n”, “ var fmt_picker = $(‘<select/>’);n”, “ fmt_picker.addClass(‘mpl-toolbar-option ui-widget ui-widget-content’);n”, “ fmt_picker_span.append(fmt_picker);n”, “ nav_element.append(fmt_picker_span);n”, “ this.format_dropdown = fmt_picker[0];n”, “n”, “ for (var ind in mpl.extensions) {n”, “ var fmt = mpl.extensions[ind];n”, “ var option = $(n”, “ ‘<option/>’, {selected: fmt === mpl.default_extension}).html(fmt);n”, “ fmt_picker.append(option)n”, “ }n”, “n”, “ // Add hover states to the ui-buttonsn”, “ $( ".ui-button" ).hover(n”, “ function() { $(this).addClass("ui-state-hover");},n”, “ function() { $(this).removeClass("ui-state-hover");}n”, “ );n”, “n”, “ var status_bar = $(‘<span class="mpl-message"/>’);n”, “ nav_element.append(status_bar);n”, “ this.message = status_bar[0];n”, “}n”, “n”, “mpl.figure.prototype.request_resize = function(x_pixels, y_pixels) {n”, “ // Request matplotlib to resize the figure. Matplotlib will then trigger a resize in the client,n”, “ // which will in turn request a refresh of the image.n”, “ this.send_message(‘resize’, {‘width’: x_pixels, ‘height’: y_pixels});n”, “}n”, “n”, “mpl.figure.prototype.send_message = function(type, properties) {n”, “ properties[‘type’] = type;n”, “ properties[‘figure_id’] = this.id;n”, “ this.ws.send(JSON.stringify(properties));n”, “}n”, “n”, “mpl.figure.prototype.send_draw_message = function() {n”, “ if (!this.waiting) {n”, “ this.waiting = true;n”, “ this.ws.send(JSON.stringify({type: "draw", figure_id: this.id}));n”, “ }n”, “}n”, “n”, “n”, “mpl.figure.prototype.handle_save = function(fig, msg) {n”, “ var format_dropdown = fig.format_dropdown;n”, “ var format = format_dropdown.options[format_dropdown.selectedIndex].value;n”, “ fig.ondownload(fig, format);n”, “}n”, “n”, “n”, “mpl.figure.prototype.handle_resize = function(fig, msg) {n”, “ var size = msg[‘size’];n”, “ if (size[0] != fig.canvas.width || size[1] != fig.canvas.height) {n”, “ fig._resize_canvas(size[0], size[1]);n”, “ fig.send_message("refresh", {});n”, “ };n”, “}n”, “n”, “mpl.figure.prototype.handle_rubberband = function(fig, msg) {n”, “ var x0 = msg[‘x0’] / mpl.ratio;n”, “ var y0 = (fig.canvas.height - msg[‘y0’]) / mpl.ratio;n”, “ var x1 = msg[‘x1’] / mpl.ratio;n”, “ var y1 = (fig.canvas.height - msg[‘y1’]) / mpl.ratio;n”, “ x0 = Math.floor(x0) + 0.5;n”, “ y0 = Math.floor(y0) + 0.5;n”, “ x1 = Math.floor(x1) + 0.5;n”, “ y1 = Math.floor(y1) + 0.5;n”, “ var min_x = Math.min(x0, x1);n”, “ var min_y = Math.min(y0, y1);n”, “ var width = Math.abs(x1 - x0);n”, “ var height = Math.abs(y1 - y0);n”, “n”, “ fig.rubberband_context.clearRect(n”, “ 0, 0, fig.canvas.width, fig.canvas.height);n”, “n”, “ fig.rubberband_context.strokeRect(min_x, min_y, width, height);n”, “}n”, “n”, “mpl.figure.prototype.handle_figure_label = function(fig, msg) {n”, “ // Updates the figure title.n”, “ fig.header.textContent = msg[‘label’];n”, “}n”, “n”, “mpl.figure.prototype.handle_cursor = function(fig, msg) {n”, “ var cursor = msg[‘cursor’];n”, “ switch(cursor)n”, “ {n”, “ case 0:n”, “ cursor = ‘pointer’;n”, “ break;n”, “ case 1:n”, “ cursor = ‘default’;n”, “ break;n”, “ case 2:n”, “ cursor = ‘crosshair’;n”, “ break;n”, “ case 3:n”, “ cursor = ‘move’;n”, “ break;n”, “ }n”, “ fig.rubberband_canvas.style.cursor = cursor;n”, “}n”, “n”, “mpl.figure.prototype.handle_message = function(fig, msg) {n”, “ fig.message.textContent = msg[‘message’];n”, “}n”, “n”, “mpl.figure.prototype.handle_draw = function(fig, msg) {n”, “ // Request the server to send over a new figure.n”, “ fig.send_draw_message();n”, “}n”, “n”, “mpl.figure.prototype.handle_image_mode = function(fig, msg) {n”, “ fig.image_mode = msg[‘mode’];n”, “}n”, “n”, “mpl.figure.prototype.updated_canvas_event = function() {n”, “ // Called whenever the canvas gets updated.n”, “ this.send_message("ack", {});n”, “}n”, “n”, “// A function to construct a web socket function for onmessage handling.n”, “// Called in the figure constructor.n”, “mpl.figure.prototype._make_on_message_function = function(fig) {n”, “ return function socket_on_message(evt) {n”, “ if (evt.data instanceof Blob) {n”, “ / FIXME: We get "Resource interpreted as Image butn”, “ * transferred with MIME type text/plain:" errors onn”, “ * Chrome. But how to set the MIME type? It doesn’t seemn”, “ * to be part of the websocket stream /n”, “ evt.data.type = "image/png";n”, “n”, “ / Free the memory for the previous frames /n”, “ if (fig.imageObj.src) {n”, “ (window.URL || window.webkitURL).revokeObjectURL(n”, “ fig.imageObj.src);n”, “ }n”, “n”, “ fig.imageObj.src = (window.URL || window.webkitURL).createObjectURL(n”, “ evt.data);n”, “ fig.updated_canvas_event();n”, “ fig.waiting = false;n”, “ return;n”, “ }n”, “ else if (typeof evt.data === ‘string’ && evt.data.slice(0, 21) == "data:image/png;base64") {n”, “ fig.imageObj.src = evt.data;n”, “ fig.updated_canvas_event();n”, “ fig.waiting = false;n”, “ return;n”, “ }n”, “n”, “ var msg = JSON.parse(evt.data);n”, “ var msg_type = msg[‘type’];n”, “n”, “ // Call the "handle_{type}" callback, which takesn”, “ // the figure and JSON message as its only arguments.n”, “ try {n”, “ var callback = fig["handle_" + msg_type];n”, “ } catch (e) {n”, “ console.log("No handler for the ‘" + msg_type + "’ message type: ", msg);n”, “ return;n”, “ }n”, “n”, “ if (callback) {n”, “ try {n”, “ // console.log("Handling ‘" + msg_type + "’ message: ", msg);n”, “ callback(fig, msg);n”, “ } catch (e) {n”, “ console.log("Exception inside the ‘handler_" + msg_type + "’ callback:", e, e.stack, msg);n”, “ }n”, “ }n”, “ };n”, “}n”, “n”, “// from http://stackoverflow.com/questions/1114465/getting-mouse-location-in-canvasn”, “mpl.findpos = function(e) {n”, “ //this section is from http://www.quirksmode.org/js/events_properties.htmln”, “ var targ;n”, “ if (!e)n”, “ e = window.event;n”, “ if (e.target)n”, “ targ = e.target;n”, “ else if (e.srcElement)n”, “ targ = e.srcElement;n”, “ if (targ.nodeType == 3) // defeat Safari bugn”, “ targ = targ.parentNode;n”, “n”, “ // jQuery normalizes the pageX and pageYn”, “ // pageX,Y are the mouse positions relative to the documentn”, “ // offset() returns the position of the element relative to the documentn”, “ var x = e.pageX - $(targ).offset().left;n”, “ var y = e.pageY - $(targ).offset().top;n”, “n”, “ return {"x": x, "y": y};n”, “};n”, “n”, “/n”, “ * return a copy of an object with only non-object keysn”, “ * we need this to avoid circular referencesn”, “ * http://stackoverflow.com/a/24161582/3208463n”, “ /n”, “function simpleKeys (original) {n”, “ return Object.keys(original).reduce(function (obj, key) {n”, “ if (typeof original[key] !== ‘object’)n”, “ obj[key] = original[key]n”, “ return obj;n”, “ }, {});n”, “}n”, “n”, “mpl.figure.prototype.mouse_event = function(event, name) {n”, “ var canvas_pos = mpl.findpos(event)n”, “n”, “ if (name === ‘button_press’)n”, “ {n”, “ this.canvas.focus();n”, “ this.canvas_div.focus();n”, “ }n”, “n”, “ var x = canvas_pos.x * mpl.ratio;n”, “ var y = canvas_pos.y * mpl.ratio;n”, “n”, “ this.send_message(name, {x: x, y: y, button: event.button,n”, “ step: event.step,n”, “ guiEvent: simpleKeys(event)});n”, “n”, “ / This prevents the web browser from automatically changing ton”, “ * the text insertion cursor when the button is pressed. We wantn”, “ * to control all of the cursor setting manually through then”, “ * ‘cursor’ event from matplotlib /n”, “ event.preventDefault();n”, “ return false;n”, “}n”, “n”, “mpl.figure.prototype._key_event_extra = function(event, name) {n”, “ // Handle any extra behaviour associated with a key eventn”, “}n”, “n”, “mpl.figure.prototype.key_event = function(event, name) {n”, “n”, “ // Prevent repeat eventsn”, “ if (name == ‘key_press’)n”, “ {n”, “ if (event.which === this._key)n”, “ return;n”, “ elsen”, “ this._key = event.which;n”, “ }n”, “ if (name == ‘key_release’)n”, “ this._key = null;n”, “n”, “ var value = ‘’;n”, “ if (event.ctrlKey && event.which != 17)n”, “ value += "ctrl+";n”, “ if (event.altKey && event.which != 18)n”, “ value += "alt+";n”, “ if (event.shiftKey && event.which != 16)n”, “ value += "shift+";n”, “n”, “ value += ‘k’;n”, “ value += event.which.toString();n”, “n”, “ this._key_event_extra(event, name);n”, “n”, “ this.send_message(name, {key: value,n”, “ guiEvent: simpleKeys(event)});n”, “ return false;n”, “}n”, “n”, “mpl.figure.prototype.toolbar_button_onclick = function(name) {n”, “ if (name == ‘download’) {n”, “ this.handle_save(this, null);n”, “ } else {n”, “ this.send_message("toolbar_button", {name: name});n”, “ }n”, “};n”, “n”, “mpl.figure.prototype.toolbar_button_onmouseover = function(tooltip) {n”, “ this.message.textContent = tooltip;n”, “};n”, “mpl.toolbar_items = [["Home", "Reset original view", "fa fa-home icon-home", "home"], ["Back", "Back to previous view", "fa fa-arrow-left icon-arrow-left", "back"], ["Forward", "Forward to next view", "fa fa-arrow-right icon-arrow-right", "forward"], ["", "", "", ""], ["Pan", "Pan axes with left mouse, zoom with right", "fa fa-arrows icon-move", "pan"], ["Zoom", "Zoom to rectangle", "fa fa-square-o icon-check-empty", "zoom"], ["", "", "", ""], ["Download", "Download plot", "fa fa-floppy-o icon-save", "download"]];n”, “n”, “mpl.extensions = ["eps", "jpeg", "pdf", "png", "ps", "raw", "svg", "tif"];n”, “n”, “mpl.default_extension = "png";var comm_websocket_adapter = function(comm) {n”, “ // Create a "websocket"-like object which calls the given IPython commn”, “ // object with the appropriate methods. Currently this is a non binaryn”, “ // socket, so there is still some room for performance tuning.n”, “ var ws = {};n”, “n”, “ ws.close = function() {n”, “ comm.close()n”, “ };n”, “ ws.send = function(m) {n”, “ //console.log(‘sending’, m);n”, “ comm.send(m);n”, “ };n”, “ // Register the callback with on_msg.n”, “ comm.on_msg(function(msg) {n”, “ //console.log(‘receiving’, msg[‘content’][‘data’], msg);n”, “ // Pass the mpl event to the overridden (by mpl) onmessage function.n”, “ ws.onmessage(msg[‘content’][‘data’])n”, “ });n”, “ return ws;n”, “}n”, “n”, “mpl.mpl_figure_comm = function(comm, msg) {n”, “ // This is the function which gets called when the mpl processn”, “ // starts-up an IPython Comm through the "matplotlib" channel.n”, “n”, “ var id = msg.content.data.id;n”, “ // Get hold of the div created by the display call when the Commn”, “ // socket was opened in Python.n”, “ var element = $("#" + id);n”, “ var ws_proxy = comm_websocket_adapter(comm)n”, “n”, “ function ondownload(figure, format) {n”, “ window.open(figure.imageObj.src);n”, “ }n”, “n”, “ var fig = new mpl.figure(id, ws_proxy,n”, “ ondownload,n”, “ element.get(0));n”, “n”, “ // Call onopen now - mpl needs it, as it is assuming we’ve passed it a realn”, “ // web socket which is closed, not our websocket->open comm proxy.n”, “ ws_proxy.onopen();n”, “n”, “ fig.parent_element = element.get(0);n”, “ fig.cell_info = mpl.find_output_cell("<div id=’" + id + "’></div>");n”, “ if (!fig.cell_info) {n”, “ console.error("Failed to find cell for figure", id, fig);n”, “ return;n”, “ }n”, “n”, “ var output_index = fig.cell_info[2]n”, “ var cell = fig.cell_info[0];n”, “n”, “};n”, “n”, “mpl.figure.prototype.handle_close = function(fig, msg) {n”, “ var width = fig.canvas.width/mpl.ration”, “ fig.root.unbind(‘remove’)n”, “n”, “ // Update the output cell to use the data from the current canvas.n”, “ fig.push_to_output();n”, “ var dataURL = fig.canvas.toDataURL();n”, “ // Re-enable the keyboard manager in IPython - without this line, in FF,n”, “ // the notebook keyboard shortcuts fail.n”, “ IPython.keyboard_manager.enable()n”, “ $(fig.parent_element).html(‘<img src="’ + dataURL + ‘" width="’ + width + ‘">’);n”, “ fig.close_ws(fig, msg);n”, “}n”, “n”, “mpl.figure.prototype.close_ws = function(fig, msg){n”, “ fig.send_message(‘closing’, msg);n”, “ // fig.ws.close()n”, “}n”, “n”, “mpl.figure.prototype.push_to_output = function(remove_interactive) {n”, “ // Turn the data on the canvas into data in the output cell.n”, “ var width = this.canvas.width/mpl.ration”, “ var dataURL = this.canvas.toDataURL();n”, “ this.cell_info[1][‘text/html’] = ‘<img src="’ + dataURL + ‘" width="’ + width + ‘">’;n”, “}n”, “n”, “mpl.figure.prototype.updated_canvas_event = function() {n”, “ // Tell IPython that the notebook contents must change.n”, “ IPython.notebook.set_dirty(true);n”, “ this.send_message("ack", {});n”, “ var fig = this;n”, “ // Wait a second, then push the new image to the DOM son”, “ // that it is saved nicely (might be nice to debounce this).n”, “ setTimeout(function () { fig.push_to_output() }, 1000);n”, “}n”, “n”, “mpl.figure.prototype._init_toolbar = function() {n”, “ var fig = this;n”, “n”, “ var nav_element = $(‘<div/>’)n”, “ nav_element.attr(‘style’, ‘width: 100%’);n”, “ this.root.append(nav_element);n”, “n”, “ // Define a callback function for later on.n”, “ function toolbar_event(event) {n”, “ return fig.toolbar_button_onclick(event[‘data’]);n”, “ }n”, “ function toolbar_mouse_event(event) {n”, “ return fig.toolbar_button_onmouseover(event[‘data’]);n”, “ }n”, “n”, “ for(var toolbar_ind in mpl.toolbar_items){n”, “ var name = mpl.toolbar_items[toolbar_ind][0];n”, “ var tooltip = mpl.toolbar_items[toolbar_ind][1];n”, “ var image = mpl.toolbar_items[toolbar_ind][2];n”, “ var method_name = mpl.toolbar_items[toolbar_ind][3];n”, “n”, “ if (!name) { continue; };n”, “n”, “ var button = $(‘<button class="btn btn-default" href="#" title="’ + name + ‘"><i class="fa ‘ + image + ‘ fa-lg"></i></button>’);n”, “ button.click(method_name, toolbar_event);n”, “ button.mouseover(tooltip, toolbar_mouse_event);n”, “ nav_element.append(button);n”, “ }n”, “n”, “ // Add the status bar.n”, “ var status_bar = $(‘<span class="mpl-message" style="text-align:right; float: right;"/>’);n”, “ nav_element.append(status_bar);n”, “ this.message = status_bar[0];n”, “n”, “ // Add the close button to the window.n”, “ var buttongrp = $(‘<div class="btn-group inline pull-right"></div>’);n”, “ var button = $(‘<button class="btn btn-mini btn-primary" href="#" title="Stop Interaction"><i class="fa fa-power-off icon-remove icon-large"></i></button>’);n”, “ button.click(function (evt) { fig.handle_close(fig, {}); } );n”, “ button.mouseover(‘Stop Interaction’, toolbar_mouse_event);n”, “ buttongrp.append(button);n”, “ var titlebar = this.root.find($(‘.ui-dialog-titlebar’));n”, “ titlebar.prepend(buttongrp);n”, “}n”, “n”, “mpl.figure.prototype._root_extra_style = function(el){n”, “ var fig = thisn”, “ el.on("remove", function(){n”, “tfig.close_ws(fig, {});n”, “ });n”, “}n”, “n”, “mpl.figure.prototype._canvas_extra_style = function(el){n”, “ // this is important to make the div ‘focusablen”, “ el.attr(‘tabindex’, 0)n”, “ // reach out to IPython and tell the keyboard manager to turn it’s selfn”, “ // off when our div gets focusn”, “n”, “ // location in version 3n”, “ if (IPython.notebook.keyboard_manager) {n”, “ IPython.notebook.keyboard_manager.register_events(el);n”, “ }n”, “ else {n”, “ // location in version 2n”, “ IPython.keyboard_manager.register_events(el);n”, “ }n”, “n”, “}n”, “n”, “mpl.figure.prototype._key_event_extra = function(event, name) {n”, “ var manager = IPython.notebook.keyboard_manager;n”, “ if (!manager)n”, “ manager = IPython.keyboard_manager;n”, “n”, “ // Check for shift+entern”, “ if (event.shiftKey && event.which == 13) {n”, “ this.canvas_div.blur();n”, “ event.shiftKey = false;n”, “ // Send a "J" for go to next celln”, “ event.which = 74;n”, “ event.keyCode = 74;n”, “ manager.command_mode();n”, “ manager.handle_keydown(event);n”, “ }n”, “}n”, “n”, “mpl.figure.prototype.handle_save = function(fig, msg) {n”, “ fig.ondownload(fig, null);n”, “}n”, “n”, “n”, “mpl.find_output_cell = function(html_output) {n”, “ // Return the cell and output element which can be found *uniquely in the notebook.n”, “ // Note - this is a bit hacky, but it is done because the "notebook_saving.Notebook"n”, “ // IPython event is triggered only after the cells have been serialised, which forn”, “ // our purposes (turning an active figure into a static one), is too late.n”, “ var cells = IPython.notebook.get_cells();n”, “ var ncells = cells.length;n”, “ for (var i=0; i<ncells; i++) {n”, “ var cell = cells[i];n”, “ if (cell.cell_type === ‘code’){n”, “ for (var j=0; j<cell.output_area.outputs.length; j++) {n”, “ var data = cell.output_area.outputs[j];n”, “ if (data.data) {n”, “ // IPython >= 3 moved mimebundle to data attribute of outputn”, “ data = data.data;n”, “ }n”, “ if (data[‘text/html’] == html_output) {n”, “ return [cell, data, j];n”, “ }n”, “ }n”, “ }n”, “ }n”, “}n”, “n”, “// Register the function which deals with the matplotlib target/channel.n”, “// The kernel may be null if the page has been refreshed.n”, “if (IPython.notebook.kernel != null) {n”, “ IPython.notebook.kernel.comm_manager.register_target(‘matplotlib’, mpl.mpl_figure_comm);n”, “}n”
], “text/plain”: [
“<IPython.core.display.Javascript object>”
]
}, “metadata”: {}, “output_type”: “display_data”
}, {
}
], “source”: [
“block = amp.blocks.Line(X, Y)n”, “anim = amp.Animation([block], t) # pass in the time valuesn”, “n”, “anim.controls()n”, “anim.save_gif("images/line3") # save animation for docsn”, “plt.show()”
]
}, {
“cell_type”: “raw”, “metadata”: {
“raw_mimetype”: “text/restructuredtext”
}, “source”: [
“.. image:: images/line3.gif”
]
}, {
“cell_type”: “markdown”, “metadata”: {}, “source”: [
“## Controlling Timen”, “n”, “Simply passing in the values of time into the call to
`Animation`
doesn’t give us much control. Instead we use a`Timeline`
.”]
}, {
“cell_type”: “code”, “execution_count”: 6, “metadata”: {}, “outputs”: [], “source”: [
“timeline = amp.Timeline(t, units="s", fps=20)”
]
}, {
“cell_type”: “markdown”, “metadata”: {}, “source”: [
“The
`units`
argument will set text to be displayed next to the time number.n”, “n”, “The`fps`
argument gives you control over how fast the animation will play.”]
}, {
“cell_type”: “code”, “execution_count”: 7, “metadata”: {}, “outputs”: [
- {
- “data”: {
- “application/javascript”: [
“/* Put everything inside the global mpl namespace /n”, “window.mpl = {};n”, “n”, “n”, “mpl.get_websocket_type = function() {n”, “ if (typeof(WebSocket) !== ‘undefined’) {n”, “ return WebSocket;n”, “ } else if (typeof(MozWebSocket) !== ‘undefined’) {n”, “ return MozWebSocket;n”, “ } else {n”, “ alert(‘Your browser does not have WebSocket support.’ +n”, “ ‘Please try Chrome, Safari or Firefox ≥ 6. ‘ +n”, “ ‘Firefox 4 and 5 are also supported but you ‘ +n”, “ ‘have to enable WebSockets in about:config.’);n”, “ };n”, “}n”, “n”, “mpl.figure = function(figure_id, websocket, ondownload, parent_element) {n”, “ this.id = figure_id;n”, “n”, “ this.ws = websocket;n”, “n”, “ this.supports_binary = (this.ws.binaryType != undefined);n”, “n”, “ if (!this.supports_binary) {n”, “ var warnings = document.getElementById("mpl-warnings");n”, “ if (warnings) {n”, “ warnings.style.display = ‘block’;n”, “ warnings.textContent = (n”, “ "This browser does not support binary websocket messages. " +n”, “ "Performance may be slow.");n”, “ }n”, “ }n”, “n”, “ this.imageObj = new Image();n”, “n”, “ this.context = undefined;n”, “ this.message = undefined;n”, “ this.canvas = undefined;n”, “ this.rubberband_canvas = undefined;n”, “ this.rubberband_context = undefined;n”, “ this.format_dropdown = undefined;n”, “n”, “ this.image_mode = ‘full’;n”, “n”, “ this.root = $(‘<div/>’);n”, “ this._root_extra_style(this.root)n”, “ this.root.attr(‘style’, ‘display: inline-block’);n”, “n”, “ $(parent_element).append(this.root);n”, “n”, “ this._init_header(this);n”, “ this._init_canvas(this);n”, “ this._init_toolbar(this);n”, “n”, “ var fig = this;n”, “n”, “ this.waiting = false;n”, “n”, “ this.ws.onopen = function () {n”, “ fig.send_message("supports_binary", {value: fig.supports_binary});n”, “ fig.send_message("send_image_mode", {});n”, “ if (mpl.ratio != 1) {n”, “ fig.send_message("set_dpi_ratio", {‘dpi_ratio’: mpl.ratio});n”, “ }n”, “ fig.send_message("refresh", {});n”, “ }n”, “n”, “ this.imageObj.onload = function() {n”, “ if (fig.image_mode == ‘full’) {n”, “ // Full images could contain transparency (where diff imagesn”, “ // almost always do), so we need to clear the canvas so thatn”, “ // there is no ghosting.n”, “ fig.context.clearRect(0, 0, fig.canvas.width, fig.canvas.height);n”, “ }n”, “ fig.context.drawImage(fig.imageObj, 0, 0);n”, “ };n”, “n”, “ this.imageObj.onunload = function() {n”, “ fig.ws.close();n”, “ }n”, “n”, “ this.ws.onmessage = this._make_on_message_function(this);n”, “n”, “ this.ondownload = ondownload;n”, “}n”, “n”, “mpl.figure.prototype._init_header = function() {n”, “ var titlebar = $(n”, “ ‘<div class="ui-dialog-titlebar ui-widget-header ui-corner-all ‘ +n”, “ ‘ui-helper-clearfix"/>’);n”, “ var titletext = $(n”, “ ‘<div class="ui-dialog-title" style="width: 100%; ‘ +n”, “ ‘text-align: center; padding: 3px;"/>’);n”, “ titlebar.append(titletext)n”, “ this.root.append(titlebar);n”, “ this.header = titletext[0];n”, “}n”, “n”, “n”, “n”, “mpl.figure.prototype._canvas_extra_style = function(canvas_div) {n”, “n”, “}n”, “n”, “n”, “mpl.figure.prototype._root_extra_style = function(canvas_div) {n”, “n”, “}n”, “n”, “mpl.figure.prototype._init_canvas = function() {n”, “ var fig = this;n”, “n”, “ var canvas_div = $(‘<div/>’);n”, “n”, “ canvas_div.attr(‘style’, ‘position: relative; clear: both; outline: 0’);n”, “n”, “ function canvas_keyboard_event(event) {n”, “ return fig.key_event(event, event[‘data’]);n”, “ }n”, “n”, “ canvas_div.keydown(‘key_press’, canvas_keyboard_event);n”, “ canvas_div.keyup(‘key_release’, canvas_keyboard_event);n”, “ this.canvas_div = canvas_divn”, “ this._canvas_extra_style(canvas_div)n”, “ this.root.append(canvas_div);n”, “n”, “ var canvas = $(‘<canvas/>’);n”, “ canvas.addClass(‘mpl-canvas’);n”, “ canvas.attr(‘style’, "left: 0; top: 0; z-index: 0; outline: 0")n”, “n”, “ this.canvas = canvas[0];n”, “ this.context = canvas[0].getContext("2d");n”, “n”, “ var backingStore = this.context.backingStorePixelRatio ||n”, “tthis.context.webkitBackingStorePixelRatio ||n”, “tthis.context.mozBackingStorePixelRatio ||n”, “tthis.context.msBackingStorePixelRatio ||n”, “tthis.context.oBackingStorePixelRatio ||n”, “tthis.context.backingStorePixelRatio || 1;n”, “n”, “ mpl.ratio = (window.devicePixelRatio || 1) / backingStore;n”, “n”, “ var rubberband = $(‘<canvas/>’);n”, “ rubberband.attr(‘style’, "position: absolute; left: 0; top: 0; z-index: 1;")n”, “n”, “ var pass_mouse_events = true;n”, “n”, “ canvas_div.resizable({n”, “ start: function(event, ui) {n”, “ pass_mouse_events = false;n”, “ },n”, “ resize: function(event, ui) {n”, “ fig.request_resize(ui.size.width, ui.size.height);n”, “ },n”, “ stop: function(event, ui) {n”, “ pass_mouse_events = true;n”, “ fig.request_resize(ui.size.width, ui.size.height);n”, “ },n”, “ });n”, “n”, “ function mouse_event_fn(event) {n”, “ if (pass_mouse_events)n”, “ return fig.mouse_event(event, event[‘data’]);n”, “ }n”, “n”, “ rubberband.mousedown(‘button_press’, mouse_event_fn);n”, “ rubberband.mouseup(‘button_release’, mouse_event_fn);n”, “ // Throttle sequential mouse events to 1 every 20ms.n”, “ rubberband.mousemove(‘motion_notify’, mouse_event_fn);n”, “n”, “ rubberband.mouseenter(‘figure_enter’, mouse_event_fn);n”, “ rubberband.mouseleave(‘figure_leave’, mouse_event_fn);n”, “n”, “ canvas_div.on("wheel", function (event) {n”, “ event = event.originalEvent;n”, “ event[‘data’] = ‘scroll’n”, “ if (event.deltaY < 0) {n”, “ event.step = 1;n”, “ } else {n”, “ event.step = -1;n”, “ }n”, “ mouse_event_fn(event);n”, “ });n”, “n”, “ canvas_div.append(canvas);n”, “ canvas_div.append(rubberband);n”, “n”, “ this.rubberband = rubberband;n”, “ this.rubberband_canvas = rubberband[0];n”, “ this.rubberband_context = rubberband[0].getContext("2d");n”, “ this.rubberband_context.strokeStyle = "#000000";n”, “n”, “ this._resize_canvas = function(width, height) {n”, “ // Keep the size of the canvas, canvas container, and rubber bandn”, “ // canvas in synch.n”, “ canvas_div.css(‘width’, width)n”, “ canvas_div.css(‘height’, height)n”, “n”, “ canvas.attr(‘width’, width * mpl.ratio);n”, “ canvas.attr(‘height’, height * mpl.ratio);n”, “ canvas.attr(‘style’, ‘width: ‘ + width + ‘px; height: ‘ + height + ‘px;’);n”, “n”, “ rubberband.attr(‘width’, width);n”, “ rubberband.attr(‘height’, height);n”, “ }n”, “n”, “ // Set the figure to an initial 600x600px, this will subsequently be updatedn”, “ // upon first draw.n”, “ this._resize_canvas(600, 600);n”, “n”, “ // Disable right mouse context menu.n”, “ $(this.rubberband_canvas).bind("contextmenu",function(e){n”, “ return false;n”, “ });n”, “n”, “ function set_focus () {n”, “ canvas.focus();n”, “ canvas_div.focus();n”, “ }n”, “n”, “ window.setTimeout(set_focus, 100);n”, “}n”, “n”, “mpl.figure.prototype._init_toolbar = function() {n”, “ var fig = this;n”, “n”, “ var nav_element = $(‘<div/>’)n”, “ nav_element.attr(‘style’, ‘width: 100%’);n”, “ this.root.append(nav_element);n”, “n”, “ // Define a callback function for later on.n”, “ function toolbar_event(event) {n”, “ return fig.toolbar_button_onclick(event[‘data’]);n”, “ }n”, “ function toolbar_mouse_event(event) {n”, “ return fig.toolbar_button_onmouseover(event[‘data’]);n”, “ }n”, “n”, “ for(var toolbar_ind in mpl.toolbar_items) {n”, “ var name = mpl.toolbar_items[toolbar_ind][0];n”, “ var tooltip = mpl.toolbar_items[toolbar_ind][1];n”, “ var image = mpl.toolbar_items[toolbar_ind][2];n”, “ var method_name = mpl.toolbar_items[toolbar_ind][3];n”, “n”, “ if (!name) {n”, “ // put a spacer in here.n”, “ continue;n”, “ }n”, “ var button = $(‘<button/>’);n”, “ button.addClass(‘ui-button ui-widget ui-state-default ui-corner-all ‘ +n”, “ ‘ui-button-icon-only’);n”, “ button.attr(‘role’, ‘button’);n”, “ button.attr(‘aria-disabled’, ‘false’);n”, “ button.click(method_name, toolbar_event);n”, “ button.mouseover(tooltip, toolbar_mouse_event);n”, “n”, “ var icon_img = $(‘<span/>’);n”, “ icon_img.addClass(‘ui-button-icon-primary ui-icon’);n”, “ icon_img.addClass(image);n”, “ icon_img.addClass(‘ui-corner-all’);n”, “n”, “ var tooltip_span = $(‘<span/>’);n”, “ tooltip_span.addClass(‘ui-button-text’);n”, “ tooltip_span.html(tooltip);n”, “n”, “ button.append(icon_img);n”, “ button.append(tooltip_span);n”, “n”, “ nav_element.append(button);n”, “ }n”, “n”, “ var fmt_picker_span = $(‘<span/>’);n”, “n”, “ var fmt_picker = $(‘<select/>’);n”, “ fmt_picker.addClass(‘mpl-toolbar-option ui-widget ui-widget-content’);n”, “ fmt_picker_span.append(fmt_picker);n”, “ nav_element.append(fmt_picker_span);n”, “ this.format_dropdown = fmt_picker[0];n”, “n”, “ for (var ind in mpl.extensions) {n”, “ var fmt = mpl.extensions[ind];n”, “ var option = $(n”, “ ‘<option/>’, {selected: fmt === mpl.default_extension}).html(fmt);n”, “ fmt_picker.append(option)n”, “ }n”, “n”, “ // Add hover states to the ui-buttonsn”, “ $( ".ui-button" ).hover(n”, “ function() { $(this).addClass("ui-state-hover");},n”, “ function() { $(this).removeClass("ui-state-hover");}n”, “ );n”, “n”, “ var status_bar = $(‘<span class="mpl-message"/>’);n”, “ nav_element.append(status_bar);n”, “ this.message = status_bar[0];n”, “}n”, “n”, “mpl.figure.prototype.request_resize = function(x_pixels, y_pixels) {n”, “ // Request matplotlib to resize the figure. Matplotlib will then trigger a resize in the client,n”, “ // which will in turn request a refresh of the image.n”, “ this.send_message(‘resize’, {‘width’: x_pixels, ‘height’: y_pixels});n”, “}n”, “n”, “mpl.figure.prototype.send_message = function(type, properties) {n”, “ properties[‘type’] = type;n”, “ properties[‘figure_id’] = this.id;n”, “ this.ws.send(JSON.stringify(properties));n”, “}n”, “n”, “mpl.figure.prototype.send_draw_message = function() {n”, “ if (!this.waiting) {n”, “ this.waiting = true;n”, “ this.ws.send(JSON.stringify({type: "draw", figure_id: this.id}));n”, “ }n”, “}n”, “n”, “n”, “mpl.figure.prototype.handle_save = function(fig, msg) {n”, “ var format_dropdown = fig.format_dropdown;n”, “ var format = format_dropdown.options[format_dropdown.selectedIndex].value;n”, “ fig.ondownload(fig, format);n”, “}n”, “n”, “n”, “mpl.figure.prototype.handle_resize = function(fig, msg) {n”, “ var size = msg[‘size’];n”, “ if (size[0] != fig.canvas.width || size[1] != fig.canvas.height) {n”, “ fig._resize_canvas(size[0], size[1]);n”, “ fig.send_message("refresh", {});n”, “ };n”, “}n”, “n”, “mpl.figure.prototype.handle_rubberband = function(fig, msg) {n”, “ var x0 = msg[‘x0’] / mpl.ratio;n”, “ var y0 = (fig.canvas.height - msg[‘y0’]) / mpl.ratio;n”, “ var x1 = msg[‘x1’] / mpl.ratio;n”, “ var y1 = (fig.canvas.height - msg[‘y1’]) / mpl.ratio;n”, “ x0 = Math.floor(x0) + 0.5;n”, “ y0 = Math.floor(y0) + 0.5;n”, “ x1 = Math.floor(x1) + 0.5;n”, “ y1 = Math.floor(y1) + 0.5;n”, “ var min_x = Math.min(x0, x1);n”, “ var min_y = Math.min(y0, y1);n”, “ var width = Math.abs(x1 - x0);n”, “ var height = Math.abs(y1 - y0);n”, “n”, “ fig.rubberband_context.clearRect(n”, “ 0, 0, fig.canvas.width, fig.canvas.height);n”, “n”, “ fig.rubberband_context.strokeRect(min_x, min_y, width, height);n”, “}n”, “n”, “mpl.figure.prototype.handle_figure_label = function(fig, msg) {n”, “ // Updates the figure title.n”, “ fig.header.textContent = msg[‘label’];n”, “}n”, “n”, “mpl.figure.prototype.handle_cursor = function(fig, msg) {n”, “ var cursor = msg[‘cursor’];n”, “ switch(cursor)n”, “ {n”, “ case 0:n”, “ cursor = ‘pointer’;n”, “ break;n”, “ case 1:n”, “ cursor = ‘default’;n”, “ break;n”, “ case 2:n”, “ cursor = ‘crosshair’;n”, “ break;n”, “ case 3:n”, “ cursor = ‘move’;n”, “ break;n”, “ }n”, “ fig.rubberband_canvas.style.cursor = cursor;n”, “}n”, “n”, “mpl.figure.prototype.handle_message = function(fig, msg) {n”, “ fig.message.textContent = msg[‘message’];n”, “}n”, “n”, “mpl.figure.prototype.handle_draw = function(fig, msg) {n”, “ // Request the server to send over a new figure.n”, “ fig.send_draw_message();n”, “}n”, “n”, “mpl.figure.prototype.handle_image_mode = function(fig, msg) {n”, “ fig.image_mode = msg[‘mode’];n”, “}n”, “n”, “mpl.figure.prototype.updated_canvas_event = function() {n”, “ // Called whenever the canvas gets updated.n”, “ this.send_message("ack", {});n”, “}n”, “n”, “// A function to construct a web socket function for onmessage handling.n”, “// Called in the figure constructor.n”, “mpl.figure.prototype._make_on_message_function = function(fig) {n”, “ return function socket_on_message(evt) {n”, “ if (evt.data instanceof Blob) {n”, “ / FIXME: We get "Resource interpreted as Image butn”, “ * transferred with MIME type text/plain:" errors onn”, “ * Chrome. But how to set the MIME type? It doesn’t seemn”, “ * to be part of the websocket stream /n”, “ evt.data.type = "image/png";n”, “n”, “ / Free the memory for the previous frames /n”, “ if (fig.imageObj.src) {n”, “ (window.URL || window.webkitURL).revokeObjectURL(n”, “ fig.imageObj.src);n”, “ }n”, “n”, “ fig.imageObj.src = (window.URL || window.webkitURL).createObjectURL(n”, “ evt.data);n”, “ fig.updated_canvas_event();n”, “ fig.waiting = false;n”, “ return;n”, “ }n”, “ else if (typeof evt.data === ‘string’ && evt.data.slice(0, 21) == "data:image/png;base64") {n”, “ fig.imageObj.src = evt.data;n”, “ fig.updated_canvas_event();n”, “ fig.waiting = false;n”, “ return;n”, “ }n”, “n”, “ var msg = JSON.parse(evt.data);n”, “ var msg_type = msg[‘type’];n”, “n”, “ // Call the "handle_{type}" callback, which takesn”, “ // the figure and JSON message as its only arguments.n”, “ try {n”, “ var callback = fig["handle_" + msg_type];n”, “ } catch (e) {n”, “ console.log("No handler for the ‘" + msg_type + "’ message type: ", msg);n”, “ return;n”, “ }n”, “n”, “ if (callback) {n”, “ try {n”, “ // console.log("Handling ‘" + msg_type + "’ message: ", msg);n”, “ callback(fig, msg);n”, “ } catch (e) {n”, “ console.log("Exception inside the ‘handler_" + msg_type + "’ callback:", e, e.stack, msg);n”, “ }n”, “ }n”, “ };n”, “}n”, “n”, “// from http://stackoverflow.com/questions/1114465/getting-mouse-location-in-canvasn”, “mpl.findpos = function(e) {n”, “ //this section is from http://www.quirksmode.org/js/events_properties.htmln”, “ var targ;n”, “ if (!e)n”, “ e = window.event;n”, “ if (e.target)n”, “ targ = e.target;n”, “ else if (e.srcElement)n”, “ targ = e.srcElement;n”, “ if (targ.nodeType == 3) // defeat Safari bugn”, “ targ = targ.parentNode;n”, “n”, “ // jQuery normalizes the pageX and pageYn”, “ // pageX,Y are the mouse positions relative to the documentn”, “ // offset() returns the position of the element relative to the documentn”, “ var x = e.pageX - $(targ).offset().left;n”, “ var y = e.pageY - $(targ).offset().top;n”, “n”, “ return {"x": x, "y": y};n”, “};n”, “n”, “/n”, “ * return a copy of an object with only non-object keysn”, “ * we need this to avoid circular referencesn”, “ * http://stackoverflow.com/a/24161582/3208463n”, “ /n”, “function simpleKeys (original) {n”, “ return Object.keys(original).reduce(function (obj, key) {n”, “ if (typeof original[key] !== ‘object’)n”, “ obj[key] = original[key]n”, “ return obj;n”, “ }, {});n”, “}n”, “n”, “mpl.figure.prototype.mouse_event = function(event, name) {n”, “ var canvas_pos = mpl.findpos(event)n”, “n”, “ if (name === ‘button_press’)n”, “ {n”, “ this.canvas.focus();n”, “ this.canvas_div.focus();n”, “ }n”, “n”, “ var x = canvas_pos.x * mpl.ratio;n”, “ var y = canvas_pos.y * mpl.ratio;n”, “n”, “ this.send_message(name, {x: x, y: y, button: event.button,n”, “ step: event.step,n”, “ guiEvent: simpleKeys(event)});n”, “n”, “ / This prevents the web browser from automatically changing ton”, “ * the text insertion cursor when the button is pressed. We wantn”, “ * to control all of the cursor setting manually through then”, “ * ‘cursor’ event from matplotlib /n”, “ event.preventDefault();n”, “ return false;n”, “}n”, “n”, “mpl.figure.prototype._key_event_extra = function(event, name) {n”, “ // Handle any extra behaviour associated with a key eventn”, “}n”, “n”, “mpl.figure.prototype.key_event = function(event, name) {n”, “n”, “ // Prevent repeat eventsn”, “ if (name == ‘key_press’)n”, “ {n”, “ if (event.which === this._key)n”, “ return;n”, “ elsen”, “ this._key = event.which;n”, “ }n”, “ if (name == ‘key_release’)n”, “ this._key = null;n”, “n”, “ var value = ‘’;n”, “ if (event.ctrlKey && event.which != 17)n”, “ value += "ctrl+";n”, “ if (event.altKey && event.which != 18)n”, “ value += "alt+";n”, “ if (event.shiftKey && event.which != 16)n”, “ value += "shift+";n”, “n”, “ value += ‘k’;n”, “ value += event.which.toString();n”, “n”, “ this._key_event_extra(event, name);n”, “n”, “ this.send_message(name, {key: value,n”, “ guiEvent: simpleKeys(event)});n”, “ return false;n”, “}n”, “n”, “mpl.figure.prototype.toolbar_button_onclick = function(name) {n”, “ if (name == ‘download’) {n”, “ this.handle_save(this, null);n”, “ } else {n”, “ this.send_message("toolbar_button", {name: name});n”, “ }n”, “};n”, “n”, “mpl.figure.prototype.toolbar_button_onmouseover = function(tooltip) {n”, “ this.message.textContent = tooltip;n”, “};n”, “mpl.toolbar_items = [["Home", "Reset original view", "fa fa-home icon-home", "home"], ["Back", "Back to previous view", "fa fa-arrow-left icon-arrow-left", "back"], ["Forward", "Forward to next view", "fa fa-arrow-right icon-arrow-right", "forward"], ["", "", "", ""], ["Pan", "Pan axes with left mouse, zoom with right", "fa fa-arrows icon-move", "pan"], ["Zoom", "Zoom to rectangle", "fa fa-square-o icon-check-empty", "zoom"], ["", "", "", ""], ["Download", "Download plot", "fa fa-floppy-o icon-save", "download"]];n”, “n”, “mpl.extensions = ["eps", "jpeg", "pdf", "png", "ps", "raw", "svg", "tif"];n”, “n”, “mpl.default_extension = "png";var comm_websocket_adapter = function(comm) {n”, “ // Create a "websocket"-like object which calls the given IPython commn”, “ // object with the appropriate methods. Currently this is a non binaryn”, “ // socket, so there is still some room for performance tuning.n”, “ var ws = {};n”, “n”, “ ws.close = function() {n”, “ comm.close()n”, “ };n”, “ ws.send = function(m) {n”, “ //console.log(‘sending’, m);n”, “ comm.send(m);n”, “ };n”, “ // Register the callback with on_msg.n”, “ comm.on_msg(function(msg) {n”, “ //console.log(‘receiving’, msg[‘content’][‘data’], msg);n”, “ // Pass the mpl event to the overridden (by mpl) onmessage function.n”, “ ws.onmessage(msg[‘content’][‘data’])n”, “ });n”, “ return ws;n”, “}n”, “n”, “mpl.mpl_figure_comm = function(comm, msg) {n”, “ // This is the function which gets called when the mpl processn”, “ // starts-up an IPython Comm through the "matplotlib" channel.n”, “n”, “ var id = msg.content.data.id;n”, “ // Get hold of the div created by the display call when the Commn”, “ // socket was opened in Python.n”, “ var element = $("#" + id);n”, “ var ws_proxy = comm_websocket_adapter(comm)n”, “n”, “ function ondownload(figure, format) {n”, “ window.open(figure.imageObj.src);n”, “ }n”, “n”, “ var fig = new mpl.figure(id, ws_proxy,n”, “ ondownload,n”, “ element.get(0));n”, “n”, “ // Call onopen now - mpl needs it, as it is assuming we’ve passed it a realn”, “ // web socket which is closed, not our websocket->open comm proxy.n”, “ ws_proxy.onopen();n”, “n”, “ fig.parent_element = element.get(0);n”, “ fig.cell_info = mpl.find_output_cell("<div id=’" + id + "’></div>");n”, “ if (!fig.cell_info) {n”, “ console.error("Failed to find cell for figure", id, fig);n”, “ return;n”, “ }n”, “n”, “ var output_index = fig.cell_info[2]n”, “ var cell = fig.cell_info[0];n”, “n”, “};n”, “n”, “mpl.figure.prototype.handle_close = function(fig, msg) {n”, “ var width = fig.canvas.width/mpl.ration”, “ fig.root.unbind(‘remove’)n”, “n”, “ // Update the output cell to use the data from the current canvas.n”, “ fig.push_to_output();n”, “ var dataURL = fig.canvas.toDataURL();n”, “ // Re-enable the keyboard manager in IPython - without this line, in FF,n”, “ // the notebook keyboard shortcuts fail.n”, “ IPython.keyboard_manager.enable()n”, “ $(fig.parent_element).html(‘<img src="’ + dataURL + ‘" width="’ + width + ‘">’);n”, “ fig.close_ws(fig, msg);n”, “}n”, “n”, “mpl.figure.prototype.close_ws = function(fig, msg){n”, “ fig.send_message(‘closing’, msg);n”, “ // fig.ws.close()n”, “}n”, “n”, “mpl.figure.prototype.push_to_output = function(remove_interactive) {n”, “ // Turn the data on the canvas into data in the output cell.n”, “ var width = this.canvas.width/mpl.ration”, “ var dataURL = this.canvas.toDataURL();n”, “ this.cell_info[1][‘text/html’] = ‘<img src="’ + dataURL + ‘" width="’ + width + ‘">’;n”, “}n”, “n”, “mpl.figure.prototype.updated_canvas_event = function() {n”, “ // Tell IPython that the notebook contents must change.n”, “ IPython.notebook.set_dirty(true);n”, “ this.send_message("ack", {});n”, “ var fig = this;n”, “ // Wait a second, then push the new image to the DOM son”, “ // that it is saved nicely (might be nice to debounce this).n”, “ setTimeout(function () { fig.push_to_output() }, 1000);n”, “}n”, “n”, “mpl.figure.prototype._init_toolbar = function() {n”, “ var fig = this;n”, “n”, “ var nav_element = $(‘<div/>’)n”, “ nav_element.attr(‘style’, ‘width: 100%’);n”, “ this.root.append(nav_element);n”, “n”, “ // Define a callback function for later on.n”, “ function toolbar_event(event) {n”, “ return fig.toolbar_button_onclick(event[‘data’]);n”, “ }n”, “ function toolbar_mouse_event(event) {n”, “ return fig.toolbar_button_onmouseover(event[‘data’]);n”, “ }n”, “n”, “ for(var toolbar_ind in mpl.toolbar_items){n”, “ var name = mpl.toolbar_items[toolbar_ind][0];n”, “ var tooltip = mpl.toolbar_items[toolbar_ind][1];n”, “ var image = mpl.toolbar_items[toolbar_ind][2];n”, “ var method_name = mpl.toolbar_items[toolbar_ind][3];n”, “n”, “ if (!name) { continue; };n”, “n”, “ var button = $(‘<button class="btn btn-default" href="#" title="’ + name + ‘"><i class="fa ‘ + image + ‘ fa-lg"></i></button>’);n”, “ button.click(method_name, toolbar_event);n”, “ button.mouseover(tooltip, toolbar_mouse_event);n”, “ nav_element.append(button);n”, “ }n”, “n”, “ // Add the status bar.n”, “ var status_bar = $(‘<span class="mpl-message" style="text-align:right; float: right;"/>’);n”, “ nav_element.append(status_bar);n”, “ this.message = status_bar[0];n”, “n”, “ // Add the close button to the window.n”, “ var buttongrp = $(‘<div class="btn-group inline pull-right"></div>’);n”, “ var button = $(‘<button class="btn btn-mini btn-primary" href="#" title="Stop Interaction"><i class="fa fa-power-off icon-remove icon-large"></i></button>’);n”, “ button.click(function (evt) { fig.handle_close(fig, {}); } );n”, “ button.mouseover(‘Stop Interaction’, toolbar_mouse_event);n”, “ buttongrp.append(button);n”, “ var titlebar = this.root.find($(‘.ui-dialog-titlebar’));n”, “ titlebar.prepend(buttongrp);n”, “}n”, “n”, “mpl.figure.prototype._root_extra_style = function(el){n”, “ var fig = thisn”, “ el.on("remove", function(){n”, “tfig.close_ws(fig, {});n”, “ });n”, “}n”, “n”, “mpl.figure.prototype._canvas_extra_style = function(el){n”, “ // this is important to make the div ‘focusablen”, “ el.attr(‘tabindex’, 0)n”, “ // reach out to IPython and tell the keyboard manager to turn it’s selfn”, “ // off when our div gets focusn”, “n”, “ // location in version 3n”, “ if (IPython.notebook.keyboard_manager) {n”, “ IPython.notebook.keyboard_manager.register_events(el);n”, “ }n”, “ else {n”, “ // location in version 2n”, “ IPython.keyboard_manager.register_events(el);n”, “ }n”, “n”, “}n”, “n”, “mpl.figure.prototype._key_event_extra = function(event, name) {n”, “ var manager = IPython.notebook.keyboard_manager;n”, “ if (!manager)n”, “ manager = IPython.keyboard_manager;n”, “n”, “ // Check for shift+entern”, “ if (event.shiftKey && event.which == 13) {n”, “ this.canvas_div.blur();n”, “ event.shiftKey = false;n”, “ // Send a "J" for go to next celln”, “ event.which = 74;n”, “ event.keyCode = 74;n”, “ manager.command_mode();n”, “ manager.handle_keydown(event);n”, “ }n”, “}n”, “n”, “mpl.figure.prototype.handle_save = function(fig, msg) {n”, “ fig.ondownload(fig, null);n”, “}n”, “n”, “n”, “mpl.find_output_cell = function(html_output) {n”, “ // Return the cell and output element which can be found *uniquely in the notebook.n”, “ // Note - this is a bit hacky, but it is done because the "notebook_saving.Notebook"n”, “ // IPython event is triggered only after the cells have been serialised, which forn”, “ // our purposes (turning an active figure into a static one), is too late.n”, “ var cells = IPython.notebook.get_cells();n”, “ var ncells = cells.length;n”, “ for (var i=0; i<ncells; i++) {n”, “ var cell = cells[i];n”, “ if (cell.cell_type === ‘code’){n”, “ for (var j=0; j<cell.output_area.outputs.length; j++) {n”, “ var data = cell.output_area.outputs[j];n”, “ if (data.data) {n”, “ // IPython >= 3 moved mimebundle to data attribute of outputn”, “ data = data.data;n”, “ }n”, “ if (data[‘text/html’] == html_output) {n”, “ return [cell, data, j];n”, “ }n”, “ }n”, “ }n”, “ }n”, “}n”, “n”, “// Register the function which deals with the matplotlib target/channel.n”, “// The kernel may be null if the page has been refreshed.n”, “if (IPython.notebook.kernel != null) {n”, “ IPython.notebook.kernel.comm_manager.register_target(‘matplotlib’, mpl.mpl_figure_comm);n”, “}n”
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], “source”: [
“block = amp.blocks.Line(X, Y)n”, “anim = amp.Animation([block], timeline) # pass in the timeline insteadn”, “n”, “anim.controls()n”, “anim.save_gif("images/line4") # save animation for docsn”, “plt.show()”
]
}, {
“cell_type”: “raw”, “metadata”: {
“raw_mimetype”: “text/restructuredtext”
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“.. image:: images/line4.gif”
]
}, {
“cell_type”: “markdown”, “metadata”: {}, “source”: [
“## Built on Matplotlibn”, “n”, “Since animatplot is build on matplotlib, we can use all of our matplotlib tools.”
]
}, {
“cell_type”: “code”, “execution_count”: 8, “metadata”: {
“scrolled”: false
}, “outputs”: [
- {
- “data”: {
- “application/javascript”: [
“/* Put everything inside the global mpl namespace /n”, “window.mpl = {};n”, “n”, “n”, “mpl.get_websocket_type = function() {n”, “ if (typeof(WebSocket) !== ‘undefined’) {n”, “ return WebSocket;n”, “ } else if (typeof(MozWebSocket) !== ‘undefined’) {n”, “ return MozWebSocket;n”, “ } else {n”, “ alert(‘Your browser does not have WebSocket support.’ +n”, “ ‘Please try Chrome, Safari or Firefox ≥ 6. ‘ +n”, “ ‘Firefox 4 and 5 are also supported but you ‘ +n”, “ ‘have to enable WebSockets in about:config.’);n”, “ };n”, “}n”, “n”, “mpl.figure = function(figure_id, websocket, ondownload, parent_element) {n”, “ this.id = figure_id;n”, “n”, “ this.ws = websocket;n”, “n”, “ this.supports_binary = (this.ws.binaryType != undefined);n”, “n”, “ if (!this.supports_binary) {n”, “ var warnings = document.getElementById("mpl-warnings");n”, “ if (warnings) {n”, “ warnings.style.display = ‘block’;n”, “ warnings.textContent = (n”, “ "This browser does not support binary websocket messages. " +n”, “ "Performance may be slow.");n”, “ }n”, “ }n”, “n”, “ this.imageObj = new Image();n”, “n”, “ this.context = undefined;n”, “ this.message = undefined;n”, “ this.canvas = undefined;n”, “ this.rubberband_canvas = undefined;n”, “ this.rubberband_context = undefined;n”, “ this.format_dropdown = undefined;n”, “n”, “ this.image_mode = ‘full’;n”, “n”, “ this.root = $(‘<div/>’);n”, “ this._root_extra_style(this.root)n”, “ this.root.attr(‘style’, ‘display: inline-block’);n”, “n”, “ $(parent_element).append(this.root);n”, “n”, “ this._init_header(this);n”, “ this._init_canvas(this);n”, “ this._init_toolbar(this);n”, “n”, “ var fig = this;n”, “n”, “ this.waiting = false;n”, “n”, “ this.ws.onopen = function () {n”, “ fig.send_message("supports_binary", {value: fig.supports_binary});n”, “ fig.send_message("send_image_mode", {});n”, “ if (mpl.ratio != 1) {n”, “ fig.send_message("set_dpi_ratio", {‘dpi_ratio’: mpl.ratio});n”, “ }n”, “ fig.send_message("refresh", {});n”, “ }n”, “n”, “ this.imageObj.onload = function() {n”, “ if (fig.image_mode == ‘full’) {n”, “ // Full images could contain transparency (where diff imagesn”, “ // almost always do), so we need to clear the canvas so thatn”, “ // there is no ghosting.n”, “ fig.context.clearRect(0, 0, fig.canvas.width, fig.canvas.height);n”, “ }n”, “ fig.context.drawImage(fig.imageObj, 0, 0);n”, “ };n”, “n”, “ this.imageObj.onunload = function() {n”, “ fig.ws.close();n”, “ }n”, “n”, “ this.ws.onmessage = this._make_on_message_function(this);n”, “n”, “ this.ondownload = ondownload;n”, “}n”, “n”, “mpl.figure.prototype._init_header = function() {n”, “ var titlebar = $(n”, “ ‘<div class="ui-dialog-titlebar ui-widget-header ui-corner-all ‘ +n”, “ ‘ui-helper-clearfix"/>’);n”, “ var titletext = $(n”, “ ‘<div class="ui-dialog-title" style="width: 100%; ‘ +n”, “ ‘text-align: center; padding: 3px;"/>’);n”, “ titlebar.append(titletext)n”, “ this.root.append(titlebar);n”, “ this.header = titletext[0];n”, “}n”, “n”, “n”, “n”, “mpl.figure.prototype._canvas_extra_style = function(canvas_div) {n”, “n”, “}n”, “n”, “n”, “mpl.figure.prototype._root_extra_style = function(canvas_div) {n”, “n”, “}n”, “n”, “mpl.figure.prototype._init_canvas = function() {n”, “ var fig = this;n”, “n”, “ var canvas_div = $(‘<div/>’);n”, “n”, “ canvas_div.attr(‘style’, ‘position: relative; clear: both; outline: 0’);n”, “n”, “ function canvas_keyboard_event(event) {n”, “ return fig.key_event(event, event[‘data’]);n”, “ }n”, “n”, “ canvas_div.keydown(‘key_press’, canvas_keyboard_event);n”, “ canvas_div.keyup(‘key_release’, canvas_keyboard_event);n”, “ this.canvas_div = canvas_divn”, “ this._canvas_extra_style(canvas_div)n”, “ this.root.append(canvas_div);n”, “n”, “ var canvas = $(‘<canvas/>’);n”, “ canvas.addClass(‘mpl-canvas’);n”, “ canvas.attr(‘style’, "left: 0; top: 0; z-index: 0; outline: 0")n”, “n”, “ this.canvas = canvas[0];n”, “ this.context = canvas[0].getContext("2d");n”, “n”, “ var backingStore = this.context.backingStorePixelRatio ||n”, “tthis.context.webkitBackingStorePixelRatio ||n”, “tthis.context.mozBackingStorePixelRatio ||n”, “tthis.context.msBackingStorePixelRatio ||n”, “tthis.context.oBackingStorePixelRatio ||n”, “tthis.context.backingStorePixelRatio || 1;n”, “n”, “ mpl.ratio = (window.devicePixelRatio || 1) / backingStore;n”, “n”, “ var rubberband = $(‘<canvas/>’);n”, “ rubberband.attr(‘style’, "position: absolute; left: 0; top: 0; z-index: 1;")n”, “n”, “ var pass_mouse_events = true;n”, “n”, “ canvas_div.resizable({n”, “ start: function(event, ui) {n”, “ pass_mouse_events = false;n”, “ },n”, “ resize: function(event, ui) {n”, “ fig.request_resize(ui.size.width, ui.size.height);n”, “ },n”, “ stop: function(event, ui) {n”, “ pass_mouse_events = true;n”, “ fig.request_resize(ui.size.width, ui.size.height);n”, “ },n”, “ });n”, “n”, “ function mouse_event_fn(event) {n”, “ if (pass_mouse_events)n”, “ return fig.mouse_event(event, event[‘data’]);n”, “ }n”, “n”, “ rubberband.mousedown(‘button_press’, mouse_event_fn);n”, “ rubberband.mouseup(‘button_release’, mouse_event_fn);n”, “ // Throttle sequential mouse events to 1 every 20ms.n”, “ rubberband.mousemove(‘motion_notify’, mouse_event_fn);n”, “n”, “ rubberband.mouseenter(‘figure_enter’, mouse_event_fn);n”, “ rubberband.mouseleave(‘figure_leave’, mouse_event_fn);n”, “n”, “ canvas_div.on("wheel", function (event) {n”, “ event = event.originalEvent;n”, “ event[‘data’] = ‘scroll’n”, “ if (event.deltaY < 0) {n”, “ event.step = 1;n”, “ } else {n”, “ event.step = -1;n”, “ }n”, “ mouse_event_fn(event);n”, “ });n”, “n”, “ canvas_div.append(canvas);n”, “ canvas_div.append(rubberband);n”, “n”, “ this.rubberband = rubberband;n”, “ this.rubberband_canvas = rubberband[0];n”, “ this.rubberband_context = rubberband[0].getContext("2d");n”, “ this.rubberband_context.strokeStyle = "#000000";n”, “n”, “ this._resize_canvas = function(width, height) {n”, “ // Keep the size of the canvas, canvas container, and rubber bandn”, “ // canvas in synch.n”, “ canvas_div.css(‘width’, width)n”, “ canvas_div.css(‘height’, height)n”, “n”, “ canvas.attr(‘width’, width * mpl.ratio);n”, “ canvas.attr(‘height’, height * mpl.ratio);n”, “ canvas.attr(‘style’, ‘width: ‘ + width + ‘px; height: ‘ + height + ‘px;’);n”, “n”, “ rubberband.attr(‘width’, width);n”, “ rubberband.attr(‘height’, height);n”, “ }n”, “n”, “ // Set the figure to an initial 600x600px, this will subsequently be updatedn”, “ // upon first draw.n”, “ this._resize_canvas(600, 600);n”, “n”, “ // Disable right mouse context menu.n”, “ $(this.rubberband_canvas).bind("contextmenu",function(e){n”, “ return false;n”, “ });n”, “n”, “ function set_focus () {n”, “ canvas.focus();n”, “ canvas_div.focus();n”, “ }n”, “n”, “ window.setTimeout(set_focus, 100);n”, “}n”, “n”, “mpl.figure.prototype._init_toolbar = function() {n”, “ var fig = this;n”, “n”, “ var nav_element = $(‘<div/>’)n”, “ nav_element.attr(‘style’, ‘width: 100%’);n”, “ this.root.append(nav_element);n”, “n”, “ // Define a callback function for later on.n”, “ function toolbar_event(event) {n”, “ return fig.toolbar_button_onclick(event[‘data’]);n”, “ }n”, “ function toolbar_mouse_event(event) {n”, “ return fig.toolbar_button_onmouseover(event[‘data’]);n”, “ }n”, “n”, “ for(var toolbar_ind in mpl.toolbar_items) {n”, “ var name = mpl.toolbar_items[toolbar_ind][0];n”, “ var tooltip = mpl.toolbar_items[toolbar_ind][1];n”, “ var image = mpl.toolbar_items[toolbar_ind][2];n”, “ var method_name = mpl.toolbar_items[toolbar_ind][3];n”, “n”, “ if (!name) {n”, “ // put a spacer in here.n”, “ continue;n”, “ }n”, “ var button = $(‘<button/>’);n”, “ button.addClass(‘ui-button ui-widget ui-state-default ui-corner-all ‘ +n”, “ ‘ui-button-icon-only’);n”, “ button.attr(‘role’, ‘button’);n”, “ button.attr(‘aria-disabled’, ‘false’);n”, “ button.click(method_name, toolbar_event);n”, “ button.mouseover(tooltip, toolbar_mouse_event);n”, “n”, “ var icon_img = $(‘<span/>’);n”, “ icon_img.addClass(‘ui-button-icon-primary ui-icon’);n”, “ icon_img.addClass(image);n”, “ icon_img.addClass(‘ui-corner-all’);n”, “n”, “ var tooltip_span = $(‘<span/>’);n”, “ tooltip_span.addClass(‘ui-button-text’);n”, “ tooltip_span.html(tooltip);n”, “n”, “ button.append(icon_img);n”, “ button.append(tooltip_span);n”, “n”, “ nav_element.append(button);n”, “ }n”, “n”, “ var fmt_picker_span = $(‘<span/>’);n”, “n”, “ var fmt_picker = $(‘<select/>’);n”, “ fmt_picker.addClass(‘mpl-toolbar-option ui-widget ui-widget-content’);n”, “ fmt_picker_span.append(fmt_picker);n”, “ nav_element.append(fmt_picker_span);n”, “ this.format_dropdown = fmt_picker[0];n”, “n”, “ for (var ind in mpl.extensions) {n”, “ var fmt = mpl.extensions[ind];n”, “ var option = $(n”, “ ‘<option/>’, {selected: fmt === mpl.default_extension}).html(fmt);n”, “ fmt_picker.append(option)n”, “ }n”, “n”, “ // Add hover states to the ui-buttonsn”, “ $( ".ui-button" ).hover(n”, “ function() { $(this).addClass("ui-state-hover");},n”, “ function() { $(this).removeClass("ui-state-hover");}n”, “ );n”, “n”, “ var status_bar = $(‘<span class="mpl-message"/>’);n”, “ nav_element.append(status_bar);n”, “ this.message = status_bar[0];n”, “}n”, “n”, “mpl.figure.prototype.request_resize = function(x_pixels, y_pixels) {n”, “ // Request matplotlib to resize the figure. Matplotlib will then trigger a resize in the client,n”, “ // which will in turn request a refresh of the image.n”, “ this.send_message(‘resize’, {‘width’: x_pixels, ‘height’: y_pixels});n”, “}n”, “n”, “mpl.figure.prototype.send_message = function(type, properties) {n”, “ properties[‘type’] = type;n”, “ properties[‘figure_id’] = this.id;n”, “ this.ws.send(JSON.stringify(properties));n”, “}n”, “n”, “mpl.figure.prototype.send_draw_message = function() {n”, “ if (!this.waiting) {n”, “ this.waiting = true;n”, “ this.ws.send(JSON.stringify({type: "draw", figure_id: this.id}));n”, “ }n”, “}n”, “n”, “n”, “mpl.figure.prototype.handle_save = function(fig, msg) {n”, “ var format_dropdown = fig.format_dropdown;n”, “ var format = format_dropdown.options[format_dropdown.selectedIndex].value;n”, “ fig.ondownload(fig, format);n”, “}n”, “n”, “n”, “mpl.figure.prototype.handle_resize = function(fig, msg) {n”, “ var size = msg[‘size’];n”, “ if (size[0] != fig.canvas.width || size[1] != fig.canvas.height) {n”, “ fig._resize_canvas(size[0], size[1]);n”, “ fig.send_message("refresh", {});n”, “ };n”, “}n”, “n”, “mpl.figure.prototype.handle_rubberband = function(fig, msg) {n”, “ var x0 = msg[‘x0’] / mpl.ratio;n”, “ var y0 = (fig.canvas.height - msg[‘y0’]) / mpl.ratio;n”, “ var x1 = msg[‘x1’] / mpl.ratio;n”, “ var y1 = (fig.canvas.height - msg[‘y1’]) / mpl.ratio;n”, “ x0 = Math.floor(x0) + 0.5;n”, “ y0 = Math.floor(y0) + 0.5;n”, “ x1 = Math.floor(x1) + 0.5;n”, “ y1 = Math.floor(y1) + 0.5;n”, “ var min_x = Math.min(x0, x1);n”, “ var min_y = Math.min(y0, y1);n”, “ var width = Math.abs(x1 - x0);n”, “ var height = Math.abs(y1 - y0);n”, “n”, “ fig.rubberband_context.clearRect(n”, “ 0, 0, fig.canvas.width, fig.canvas.height);n”, “n”, “ fig.rubberband_context.strokeRect(min_x, min_y, width, height);n”, “}n”, “n”, “mpl.figure.prototype.handle_figure_label = function(fig, msg) {n”, “ // Updates the figure title.n”, “ fig.header.textContent = msg[‘label’];n”, “}n”, “n”, “mpl.figure.prototype.handle_cursor = function(fig, msg) {n”, “ var cursor = msg[‘cursor’];n”, “ switch(cursor)n”, “ {n”, “ case 0:n”, “ cursor = ‘pointer’;n”, “ break;n”, “ case 1:n”, “ cursor = ‘default’;n”, “ break;n”, “ case 2:n”, “ cursor = ‘crosshair’;n”, “ break;n”, “ case 3:n”, “ cursor = ‘move’;n”, “ break;n”, “ }n”, “ fig.rubberband_canvas.style.cursor = cursor;n”, “}n”, “n”, “mpl.figure.prototype.handle_message = function(fig, msg) {n”, “ fig.message.textContent = msg[‘message’];n”, “}n”, “n”, “mpl.figure.prototype.handle_draw = function(fig, msg) {n”, “ // Request the server to send over a new figure.n”, “ fig.send_draw_message();n”, “}n”, “n”, “mpl.figure.prototype.handle_image_mode = function(fig, msg) {n”, “ fig.image_mode = msg[‘mode’];n”, “}n”, “n”, “mpl.figure.prototype.updated_canvas_event = function() {n”, “ // Called whenever the canvas gets updated.n”, “ this.send_message("ack", {});n”, “}n”, “n”, “// A function to construct a web socket function for onmessage handling.n”, “// Called in the figure constructor.n”, “mpl.figure.prototype._make_on_message_function = function(fig) {n”, “ return function socket_on_message(evt) {n”, “ if (evt.data instanceof Blob) {n”, “ / FIXME: We get "Resource interpreted as Image butn”, “ * transferred with MIME type text/plain:" errors onn”, “ * Chrome. But how to set the MIME type? It doesn’t seemn”, “ * to be part of the websocket stream /n”, “ evt.data.type = "image/png";n”, “n”, “ / Free the memory for the previous frames /n”, “ if (fig.imageObj.src) {n”, “ (window.URL || window.webkitURL).revokeObjectURL(n”, “ fig.imageObj.src);n”, “ }n”, “n”, “ fig.imageObj.src = (window.URL || window.webkitURL).createObjectURL(n”, “ evt.data);n”, “ fig.updated_canvas_event();n”, “ fig.waiting = false;n”, “ return;n”, “ }n”, “ else if (typeof evt.data === ‘string’ && evt.data.slice(0, 21) == "data:image/png;base64") {n”, “ fig.imageObj.src = evt.data;n”, “ fig.updated_canvas_event();n”, “ fig.waiting = false;n”, “ return;n”, “ }n”, “n”, “ var msg = JSON.parse(evt.data);n”, “ var msg_type = msg[‘type’];n”, “n”, “ // Call the "handle_{type}" callback, which takesn”, “ // the figure and JSON message as its only arguments.n”, “ try {n”, “ var callback = fig["handle_" + msg_type];n”, “ } catch (e) {n”, “ console.log("No handler for the ‘" + msg_type + "’ message type: ", msg);n”, “ return;n”, “ }n”, “n”, “ if (callback) {n”, “ try {n”, “ // console.log("Handling ‘" + msg_type + "’ message: ", msg);n”, “ callback(fig, msg);n”, “ } catch (e) {n”, “ console.log("Exception inside the ‘handler_" + msg_type + "’ callback:", e, e.stack, msg);n”, “ }n”, “ }n”, “ };n”, “}n”, “n”, “// from http://stackoverflow.com/questions/1114465/getting-mouse-location-in-canvasn”, “mpl.findpos = function(e) {n”, “ //this section is from http://www.quirksmode.org/js/events_properties.htmln”, “ var targ;n”, “ if (!e)n”, “ e = window.event;n”, “ if (e.target)n”, “ targ = e.target;n”, “ else if (e.srcElement)n”, “ targ = e.srcElement;n”, “ if (targ.nodeType == 3) // defeat Safari bugn”, “ targ = targ.parentNode;n”, “n”, “ // jQuery normalizes the pageX and pageYn”, “ // pageX,Y are the mouse positions relative to the documentn”, “ // offset() returns the position of the element relative to the documentn”, “ var x = e.pageX - $(targ).offset().left;n”, “ var y = e.pageY - $(targ).offset().top;n”, “n”, “ return {"x": x, "y": y};n”, “};n”, “n”, “/n”, “ * return a copy of an object with only non-object keysn”, “ * we need this to avoid circular referencesn”, “ * http://stackoverflow.com/a/24161582/3208463n”, “ /n”, “function simpleKeys (original) {n”, “ return Object.keys(original).reduce(function (obj, key) {n”, “ if (typeof original[key] !== ‘object’)n”, “ obj[key] = original[key]n”, “ return obj;n”, “ }, {});n”, “}n”, “n”, “mpl.figure.prototype.mouse_event = function(event, name) {n”, “ var canvas_pos = mpl.findpos(event)n”, “n”, “ if (name === ‘button_press’)n”, “ {n”, “ this.canvas.focus();n”, “ this.canvas_div.focus();n”, “ }n”, “n”, “ var x = canvas_pos.x * mpl.ratio;n”, “ var y = canvas_pos.y * mpl.ratio;n”, “n”, “ this.send_message(name, {x: x, y: y, button: event.button,n”, “ step: event.step,n”, “ guiEvent: simpleKeys(event)});n”, “n”, “ / This prevents the web browser from automatically changing ton”, “ * the text insertion cursor when the button is pressed. We wantn”, “ * to control all of the cursor setting manually through then”, “ * ‘cursor’ event from matplotlib /n”, “ event.preventDefault();n”, “ return false;n”, “}n”, “n”, “mpl.figure.prototype._key_event_extra = function(event, name) {n”, “ // Handle any extra behaviour associated with a key eventn”, “}n”, “n”, “mpl.figure.prototype.key_event = function(event, name) {n”, “n”, “ // Prevent repeat eventsn”, “ if (name == ‘key_press’)n”, “ {n”, “ if (event.which === this._key)n”, “ return;n”, “ elsen”, “ this._key = event.which;n”, “ }n”, “ if (name == ‘key_release’)n”, “ this._key = null;n”, “n”, “ var value = ‘’;n”, “ if (event.ctrlKey && event.which != 17)n”, “ value += "ctrl+";n”, “ if (event.altKey && event.which != 18)n”, “ value += "alt+";n”, “ if (event.shiftKey && event.which != 16)n”, “ value += "shift+";n”, “n”, “ value += ‘k’;n”, “ value += event.which.toString();n”, “n”, “ this._key_event_extra(event, name);n”, “n”, “ this.send_message(name, {key: value,n”, “ guiEvent: simpleKeys(event)});n”, “ return false;n”, “}n”, “n”, “mpl.figure.prototype.toolbar_button_onclick = function(name) {n”, “ if (name == ‘download’) {n”, “ this.handle_save(this, null);n”, “ } else {n”, “ this.send_message("toolbar_button", {name: name});n”, “ }n”, “};n”, “n”, “mpl.figure.prototype.toolbar_button_onmouseover = function(tooltip) {n”, “ this.message.textContent = tooltip;n”, “};n”, “mpl.toolbar_items = [["Home", "Reset original view", "fa fa-home icon-home", "home"], ["Back", "Back to previous view", "fa fa-arrow-left icon-arrow-left", "back"], ["Forward", "Forward to next view", "fa fa-arrow-right icon-arrow-right", "forward"], ["", "", "", ""], ["Pan", "Pan axes with left mouse, zoom with right", "fa fa-arrows icon-move", "pan"], ["Zoom", "Zoom to rectangle", "fa fa-square-o icon-check-empty", "zoom"], ["", "", "", ""], ["Download", "Download plot", "fa fa-floppy-o icon-save", "download"]];n”, “n”, “mpl.extensions = ["eps", "jpeg", "pdf", "png", "ps", "raw", "svg", "tif"];n”, “n”, “mpl.default_extension = "png";var comm_websocket_adapter = function(comm) {n”, “ // Create a "websocket"-like object which calls the given IPython commn”, “ // object with the appropriate methods. Currently this is a non binaryn”, “ // socket, so there is still some room for performance tuning.n”, “ var ws = {};n”, “n”, “ ws.close = function() {n”, “ comm.close()n”, “ };n”, “ ws.send = function(m) {n”, “ //console.log(‘sending’, m);n”, “ comm.send(m);n”, “ };n”, “ // Register the callback with on_msg.n”, “ comm.on_msg(function(msg) {n”, “ //console.log(‘receiving’, msg[‘content’][‘data’], msg);n”, “ // Pass the mpl event to the overridden (by mpl) onmessage function.n”, “ ws.onmessage(msg[‘content’][‘data’])n”, “ });n”, “ return ws;n”, “}n”, “n”, “mpl.mpl_figure_comm = function(comm, msg) {n”, “ // This is the function which gets called when the mpl processn”, “ // starts-up an IPython Comm through the "matplotlib" channel.n”, “n”, “ var id = msg.content.data.id;n”, “ // Get hold of the div created by the display call when the Commn”, “ // socket was opened in Python.n”, “ var element = $("#" + id);n”, “ var ws_proxy = comm_websocket_adapter(comm)n”, “n”, “ function ondownload(figure, format) {n”, “ window.open(figure.imageObj.src);n”, “ }n”, “n”, “ var fig = new mpl.figure(id, ws_proxy,n”, “ ondownload,n”, “ element.get(0));n”, “n”, “ // Call onopen now - mpl needs it, as it is assuming we’ve passed it a realn”, “ // web socket which is closed, not our websocket->open comm proxy.n”, “ ws_proxy.onopen();n”, “n”, “ fig.parent_element = element.get(0);n”, “ fig.cell_info = mpl.find_output_cell("<div id=’" + id + "’></div>");n”, “ if (!fig.cell_info) {n”, “ console.error("Failed to find cell for figure", id, fig);n”, “ return;n”, “ }n”, “n”, “ var output_index = fig.cell_info[2]n”, “ var cell = fig.cell_info[0];n”, “n”, “};n”, “n”, “mpl.figure.prototype.handle_close = function(fig, msg) {n”, “ var width = fig.canvas.width/mpl.ration”, “ fig.root.unbind(‘remove’)n”, “n”, “ // Update the output cell to use the data from the current canvas.n”, “ fig.push_to_output();n”, “ var dataURL = fig.canvas.toDataURL();n”, “ // Re-enable the keyboard manager in IPython - without this line, in FF,n”, “ // the notebook keyboard shortcuts fail.n”, “ IPython.keyboard_manager.enable()n”, “ $(fig.parent_element).html(‘<img src="’ + dataURL + ‘" width="’ + width + ‘">’);n”, “ fig.close_ws(fig, msg);n”, “}n”, “n”, “mpl.figure.prototype.close_ws = function(fig, msg){n”, “ fig.send_message(‘closing’, msg);n”, “ // fig.ws.close()n”, “}n”, “n”, “mpl.figure.prototype.push_to_output = function(remove_interactive) {n”, “ // Turn the data on the canvas into data in the output cell.n”, “ var width = this.canvas.width/mpl.ration”, “ var dataURL = this.canvas.toDataURL();n”, “ this.cell_info[1][‘text/html’] = ‘<img src="’ + dataURL + ‘" width="’ + width + ‘">’;n”, “}n”, “n”, “mpl.figure.prototype.updated_canvas_event = function() {n”, “ // Tell IPython that the notebook contents must change.n”, “ IPython.notebook.set_dirty(true);n”, “ this.send_message("ack", {});n”, “ var fig = this;n”, “ // Wait a second, then push the new image to the DOM son”, “ // that it is saved nicely (might be nice to debounce this).n”, “ setTimeout(function () { fig.push_to_output() }, 1000);n”, “}n”, “n”, “mpl.figure.prototype._init_toolbar = function() {n”, “ var fig = this;n”, “n”, “ var nav_element = $(‘<div/>’)n”, “ nav_element.attr(‘style’, ‘width: 100%’);n”, “ this.root.append(nav_element);n”, “n”, “ // Define a callback function for later on.n”, “ function toolbar_event(event) {n”, “ return fig.toolbar_button_onclick(event[‘data’]);n”, “ }n”, “ function toolbar_mouse_event(event) {n”, “ return fig.toolbar_button_onmouseover(event[‘data’]);n”, “ }n”, “n”, “ for(var toolbar_ind in mpl.toolbar_items){n”, “ var name = mpl.toolbar_items[toolbar_ind][0];n”, “ var tooltip = mpl.toolbar_items[toolbar_ind][1];n”, “ var image = mpl.toolbar_items[toolbar_ind][2];n”, “ var method_name = mpl.toolbar_items[toolbar_ind][3];n”, “n”, “ if (!name) { continue; };n”, “n”, “ var button = $(‘<button class="btn btn-default" href="#" title="’ + name + ‘"><i class="fa ‘ + image + ‘ fa-lg"></i></button>’);n”, “ button.click(method_name, toolbar_event);n”, “ button.mouseover(tooltip, toolbar_mouse_event);n”, “ nav_element.append(button);n”, “ }n”, “n”, “ // Add the status bar.n”, “ var status_bar = $(‘<span class="mpl-message" style="text-align:right; float: right;"/>’);n”, “ nav_element.append(status_bar);n”, “ this.message = status_bar[0];n”, “n”, “ // Add the close button to the window.n”, “ var buttongrp = $(‘<div class="btn-group inline pull-right"></div>’);n”, “ var button = $(‘<button class="btn btn-mini btn-primary" href="#" title="Stop Interaction"><i class="fa fa-power-off icon-remove icon-large"></i></button>’);n”, “ button.click(function (evt) { fig.handle_close(fig, {}); } );n”, “ button.mouseover(‘Stop Interaction’, toolbar_mouse_event);n”, “ buttongrp.append(button);n”, “ var titlebar = this.root.find($(‘.ui-dialog-titlebar’));n”, “ titlebar.prepend(buttongrp);n”, “}n”, “n”, “mpl.figure.prototype._root_extra_style = function(el){n”, “ var fig = thisn”, “ el.on("remove", function(){n”, “tfig.close_ws(fig, {});n”, “ });n”, “}n”, “n”, “mpl.figure.prototype._canvas_extra_style = function(el){n”, “ // this is important to make the div ‘focusablen”, “ el.attr(‘tabindex’, 0)n”, “ // reach out to IPython and tell the keyboard manager to turn it’s selfn”, “ // off when our div gets focusn”, “n”, “ // location in version 3n”, “ if (IPython.notebook.keyboard_manager) {n”, “ IPython.notebook.keyboard_manager.register_events(el);n”, “ }n”, “ else {n”, “ // location in version 2n”, “ IPython.keyboard_manager.register_events(el);n”, “ }n”, “n”, “}n”, “n”, “mpl.figure.prototype._key_event_extra = function(event, name) {n”, “ var manager = IPython.notebook.keyboard_manager;n”, “ if (!manager)n”, “ manager = IPython.keyboard_manager;n”, “n”, “ // Check for shift+entern”, “ if (event.shiftKey && event.which == 13) {n”, “ this.canvas_div.blur();n”, “ event.shiftKey = false;n”, “ // Send a "J" for go to next celln”, “ event.which = 74;n”, “ event.keyCode = 74;n”, “ manager.command_mode();n”, “ manager.handle_keydown(event);n”, “ }n”, “}n”, “n”, “mpl.figure.prototype.handle_save = function(fig, msg) {n”, “ fig.ondownload(fig, null);n”, “}n”, “n”, “n”, “mpl.find_output_cell = function(html_output) {n”, “ // Return the cell and output element which can be found *uniquely in the notebook.n”, “ // Note - this is a bit hacky, but it is done because the "notebook_saving.Notebook"n”, “ // IPython event is triggered only after the cells have been serialised, which forn”, “ // our purposes (turning an active figure into a static one), is too late.n”, “ var cells = IPython.notebook.get_cells();n”, “ var ncells = cells.length;n”, “ for (var i=0; i<ncells; i++) {n”, “ var cell = cells[i];n”, “ if (cell.cell_type === ‘code’){n”, “ for (var j=0; j<cell.output_area.outputs.length; j++) {n”, “ var data = cell.output_area.outputs[j];n”, “ if (data.data) {n”, “ // IPython >= 3 moved mimebundle to data attribute of outputn”, “ data = data.data;n”, “ }n”, “ if (data[‘text/html’] == html_output) {n”, “ return [cell, data, j];n”, “ }n”, “ }n”, “ }n”, “ }n”, “}n”, “n”, “// Register the function which deals with the matplotlib target/channel.n”, “// The kernel may be null if the page has been refreshed.n”, “if (IPython.notebook.kernel != null) {n”, “ IPython.notebook.kernel.comm_manager.register_target(‘matplotlib’, mpl.mpl_figure_comm);n”, “}n”
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