mirror of
https://github.com/galaxyproject/galaxy.git
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470 lines
20 KiB
JavaScript
470 lines
20 KiB
JavaScript
import $ from "jquery";
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import "jquery-contextmenu";
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import "jquery.ui.position";
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import _ from "underscore";
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// Use lighter weight 'core' version of paper since we don't need paperscript
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import paper from "../node_modules/paper/dist/paper-core.js";
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const CommandManager = (function() {
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function CommandManager() {}
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CommandManager.executed = [];
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CommandManager.unexecuted = [];
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CommandManager.execute = function execute(cmd) {
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cmd.execute();
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CommandManager.executed.push(cmd);
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};
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CommandManager.undo = function undo() {
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const cmd1 = CommandManager.executed.pop();
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if (cmd1 !== undefined) {
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if (cmd1.unexecute !== undefined) {
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cmd1.unexecute();
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}
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CommandManager.unexecuted.push(cmd1);
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}
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};
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CommandManager.redo = function redo() {
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let cmd2 = CommandManager.unexecuted.pop();
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if (cmd2 === undefined) {
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cmd2 = CommandManager.executed.pop();
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CommandManager.executed.push(cmd2);
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CommandManager.executed.push(cmd2);
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}
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if (cmd2 !== undefined) {
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cmd2.execute();
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CommandManager.executed.push(cmd2);
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}
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};
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return CommandManager;
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})();
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const generateUUID = function() {
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let d = new Date().getTime();
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const uuid = "xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx".replace(/[xy]/g, function(c) {
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const r = (d + Math.random() * 16) % 16 | 0;
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d = Math.floor(d / 16);
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return (c == "x" ? r : (r & 0x7) | 0x8).toString(16);
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});
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return uuid;
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};
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window.bundleEntries = window.bundleEntries || {};
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window.bundleEntries.load = function (opt) {
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const chart = opt.chart;
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const dataset = opt.dataset;
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const defaults = { color: "red", width: 4, opacity: 0.5 };
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$.fn.createCanvas = function(options) {
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let settings = $.extend({}, defaults, options || {});
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const self = this;
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this.setOptions = function(options) {
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settings = $.extend(settings, options);
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};
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$(document).ready(function() {
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$(self).each(function(eachIndex, eachItem) {
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self.paths = [];
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const img = eachItem;
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// Get a reference to the canvas object
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const canvas = $("<canvas>")
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.attr({
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width: options.img_width + "px",
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height: options.img_height + "px"
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})
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.addClass("image-canvas")
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.css({
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position: "absolute",
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top: "0px",
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left: "0px"
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});
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$(img).after(canvas);
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$(img).data("paths", []);
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// Create an empty project and a view for the canvas
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paper.setup(canvas[0]);
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canvas[0].width = options.img_width;
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canvas[0].height = options.img_height;
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$(canvas).mouseenter(function() {
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paper.projects[eachIndex].activate();
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});
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// Create a simple drawing tool:
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const tool = new paper.Tool();
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tool.onMouseMove = function(event) {
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if (!$(".context-menu-list").is(":visible")) {
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paper.project.activeLayer.selected = false;
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self.setPenColor(settings.color);
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if (event.item) {
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event.item.selected = true;
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selectedItem = event.item;
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self.setCursorHandOpen();
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} else {
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selectedItem = null;
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}
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}
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};
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tool.onMouseDown = function(event) {
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switch (event.event.button) {
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// leftclick
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case 0:
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// If we produced a path before, deselect it:
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if (path) {
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path.selected = false;
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}
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path = new paper.Path();
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path.data.id = generateUUID();
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path.strokeColor = settings.color;
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path.strokeWidth = settings.width;
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path.opacity = settings.opacity;
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break;
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// rightclick
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case 2:
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break;
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}
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};
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tool.onMouseDrag = function(event) {
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switch (event.event.button) {
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// leftclick
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case 0:
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// Every drag event, add a point to the path at the current
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// position of the mouse:
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if (selectedItem) {
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if (!mouseDownPoint) {
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mouseDownPoint = selectedItem.position;
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}
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self.setCursorHandClose();
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selectedItem.position = new paper.Point(
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selectedItem.position.x + event.delta.x,
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selectedItem.position.y + event.delta.y
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);
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} else if (path) {
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path.add(event.point);
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}
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break;
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// rightclick
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case 2:
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break;
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}
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};
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tool.onMouseUp = function(event) {
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switch (event.event.button) {
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// leftclick
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case 0:
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if (selectedItem) {
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if (mouseDownPoint) {
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const selectedItemId = selectedItem.id;
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const draggingStartPoint = { x: mouseDownPoint.x, y: mouseDownPoint.y };
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CommandManager.execute({
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execute: function() {
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//item was already moved, so do nothing
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},
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unexecute: function() {
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$(paper.project.activeLayer.children).each(function(index, item) {
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if (item.id == selectedItemId) {
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if (item.segments) {
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new paper.Point(
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(item.segments[item.segments.length - 1].point.x -
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item.segments[0].point.x) /
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2,
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(item.segments[item.segments.length - 1].point.y -
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item.segments[0].point.y) /
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2
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);
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item.position = new paper.Point(
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draggingStartPoint.x,
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draggingStartPoint.y
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);
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} else {
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item.position = draggingStartPoint;
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}
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return false;
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}
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});
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}
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});
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mouseDownPoint = null;
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}
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} else {
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// When the mouse is released, simplify it:
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path.simplify();
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path.remove();
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const strPath = path.exportJSON({ asString: true });
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const uid = generateUUID();
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CommandManager.execute({
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execute: function() {
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path = new paper.Path();
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path.importJSON(strPath);
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path.data.uid = uid;
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},
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unexecute: function() {
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$(paper.project.activeLayer.children).each(function(index, item) {
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if (item.data && item.data.uid) {
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if (item.data.uid == uid) {
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item.remove();
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}
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}
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});
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}
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});
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}
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break;
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// rightclick
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case 2:
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contextPoint = event.point;
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//Unused?
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//contextSelectedItemId = selectedItem ? selectedItem.data.id : "";
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break;
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}
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};
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tool.onKeyUp = function(event) {
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if (selectedItem) {
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// When a key is released, set the content of the text item:
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if (selectedItem.content) {
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if (event.key == "backspace") selectedItem.content = selectedItem.content.slice(0, -1);
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} else {
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selectedItem.content = selectedItem.content.replace("<some text>", "");
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if (event.key == "space") selectedItem.content += " ";
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else if (event.key.length == 1) selectedItem.content += event.key;
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}
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}
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};
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paper.view.draw();
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});
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});
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let path;
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let contextPoint;
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//let contextSelectedItemId;
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let selectedItem;
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let mouseDownPoint;
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this.downloadCanvas = function(canvas, filename) {
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/// create an "off-screen" anchor tag
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const lnk = document.createElement("a");
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/// the key here is to set the download attribute of the a tag
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lnk.download = filename;
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/// convert canvas content to data-uri for link. When download
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/// attribute is set the content pointed to by link will be
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/// pushed as "download" in HTML5 capable browsers
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lnk.href = canvas.toDataURL();
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/// create a "fake" click-event to trigger the download
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if (document.createEvent) {
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const e = document.createEvent("MouseEvents");
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e.initMouseEvent("click", true, true, window, 0, 0, 0, 0, 0, false, false, false, false, 0, null);
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lnk.dispatchEvent(e);
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} else if (lnk.fireEvent) {
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lnk.fireEvent("onclick");
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}
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};
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this.download = function() {
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const canvas = paper.project.activeLayer.view.element;
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const img = $(canvas)[0];
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const mergeCanvas = $("<canvas>").attr({
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width: img.width,
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height: img.height
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});
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const mergedContext = mergeCanvas[0].getContext("2d");
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mergedContext.clearRect(0, 0, img.width, img.height);
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mergedContext.drawImage(img, 0, 0);
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mergedContext.drawImage(canvas, 0, 0);
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self.downloadCanvas(mergeCanvas[0], "only-annotations.png");
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// create canvas for original and annotations
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const annotated_img = $(canvas)
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.parent()
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.find("img")[0];
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const mergeCanvasAnnotated = $("<canvas>").attr({
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width: $(annotated_img).width(),
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height: $(annotated_img).height()
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});
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const mergedContextAnnotated = mergeCanvasAnnotated[0].getContext("2d");
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mergedContextAnnotated.clearRect(0, 0, $(annotated_img).width(), $(annotated_img).height());
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mergedContextAnnotated.drawImage(annotated_img, 0, 0);
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mergedContextAnnotated.drawImage(canvas, 0, 0);
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self.downloadCanvas(mergeCanvasAnnotated[0], "original-with-annotations.png");
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};
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this.setText = function() {
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const uid = generateUUID();
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const pos = contextPoint;
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CommandManager.execute({
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execute: function() {
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const TXT_DBL_CLICK = "<<double click to edit>>";
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const txt = TXT_DBL_CLICK;
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const text = new paper.PointText(pos);
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text.content = txt;
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text.fillColor = settings.color;
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text.fontSize = 14;
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text.fontFamily = "sans-serif";
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text.data.uid = uid;
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text.opacity = settings.opacity;
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text.onDoubleClick = function(event) {
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if (this.className == "PointText") {
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const txt = window.prompt("Type in your text", this.content.replace(TXT_DBL_CLICK, ""));
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if (txt.length > 0) this.content = txt;
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}
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};
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},
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unexecute: function() {
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$(paper.project.activeLayer.children).each(function(index, item) {
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if (item.data && item.data.uid) {
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if (item.data.uid == uid) {
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item.remove();
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}
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}
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});
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}
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});
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};
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this.setPenColor = function(color) {
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self.setOptions({ color: color });
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$(".image-canvas").css(
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"cursor",
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"url(/static/plugins/visualizations/annotate_image/static/images/" + color + "-pen.png) 14 50, auto"
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);
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};
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this.setCursorHandOpen = function() {
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$(".image-canvas").css(
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"cursor",
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"url(/static/plugins/visualizations/annotate_image/static/images/hand-open.png) 25 25, auto"
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);
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};
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this.setCursorHandClose = function() {
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$(".image-canvas").css(
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"cursor",
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"url(/static/plugins/visualizations/annotate_image/static/images/hand-close.png) 25 25, auto"
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);
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};
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$.contextMenu({
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selector: ".image-canvas",
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callback: function(key, options) {
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switch (key) {
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//COMMANDS
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case "undo":
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CommandManager.undo();
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break;
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case "redo":
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CommandManager.redo();
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break;
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case "download":
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self.download();
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break;
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//TOOLS
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case "text":
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self.setText();
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break;
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//PENS
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case "blackPen":
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self.setPenColor("black");
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break;
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case "redPen":
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self.setPenColor("red");
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break;
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case "greenPen":
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self.setPenColor("green");
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break;
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case "bluePen":
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self.setPenColor("blue");
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break;
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case "yellowPen":
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self.setPenColor("yellow");
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break;
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}
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},
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items: {
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undo: { name: "Undo", icon: "undo" },
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redo: { name: "Redo", icon: "redo" },
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download: { name: "Download", icon: "download" },
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sep1: "---------",
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text: { name: "Text", icon: "text" },
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sep2: "---------",
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blackPen: { name: "Black Pen", icon: "blackpen" },
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redPen: { name: "Red Pen", icon: "redpen" },
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greenPen: { name: "Green Pen", icon: "greenpen" },
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bluePen: { name: "Blue Pen", icon: "bluepen" },
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yellowPen: { name: "Yellow Pen", icon: "yellowpen" }
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}
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});
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const $menuList = $(".context-menu-list");
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$menuList.find(".context-menu-icon-text").css({
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"background-image": "url(/static/plugins/visualizations/annotate_image/static/images/text.png)",
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"background-repeat": "no-repeat",
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"background-position": "right 96% bottom 45%"
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});
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$menuList.find(".context-menu-icon-blackpen").css({
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"background-image": "url(/static/plugins/visualizations/annotate_image/static/images/blackpen.png)",
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"background-repeat": "no-repeat",
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"background-position": "right 97% bottom 48%"
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});
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$menuList.find(".context-menu-icon-redpen").css({
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"background-image": "url(/static/plugins/visualizations/annotate_image/static/images/redpen.png)",
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"background-repeat": "no-repeat",
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"background-position": "right 97% bottom 48%"
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});
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$menuList.find(".context-menu-icon-greenpen").css({
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"background-image": "url(/static/plugins/visualizations/annotate_image/static/images/greenpen.png)",
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"background-repeat": "no-repeat",
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"background-position": "right 97% bottom 48%"
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});
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$menuList.find(".context-menu-icon-bluepen").css({
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"background-image": "url(/static/plugins/visualizations/annotate_image/static/images/bluepen.png)",
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"background-repeat": "no-repeat",
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"background-position": "right 97% bottom 48%"
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});
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$menuList.find(".context-menu-icon-yellowpen").css({
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"background-image": "url(/static/plugins/visualizations/annotate_image/static/images/yellowpen.png)",
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"background-repeat": "no-repeat",
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"background-position": "right 97% bottom 48%"
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});
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};
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$.ajax({
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url: dataset.download_url,
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success: function(content) {
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const $chartViewer = $("#" + opt.target);
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$chartViewer.html("<img id='image-annotate' src='" + dataset.download_url + "' />");
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$chartViewer.css("overflow", "auto");
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$chartViewer.css("position", "relative");
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const $image = $chartViewer.find("img");
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$image.on("load", function() {
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const width = $(this).width();
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const height = $(this).height();
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$image.width(width);
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$image.height(height);
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$image.createCanvas({
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color: "red",
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width: 2,
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opacity: 0.5,
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img_width: width,
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img_height: height
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});
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});
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chart.state("ok", "Chart drawn.");
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opt.process.resolve();
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},
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error: function() {
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chart.state("failed", "Failed to access dataset.");
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opt.process.resolve();
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}
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});
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}
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