mirror of
https://github.com/Jermolene/TiddlyWiki5
synced 2024-07-05 19:53:17 +00:00
Ridiculously primitive support for editing bitmap images
Just a simple black brush at present
This commit is contained in:
Jeremy Ruston
parent
350f2f50d4
commit
4eef87ec36
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@ -12,7 +12,116 @@ var Tiddler = require("../Tiddler.js").Tiddler,
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Dependencies = require("../Dependencies.js").Dependencies,
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utils = require("../Utils.js");
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function getText(text,node) {
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function BitmapEditor(macroNode) {
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this.macroNode = macroNode;
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}
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BitmapEditor.prototype.getContent = function() {
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return [Renderer.ElementNode("canvas",{},[])]
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};
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BitmapEditor.prototype.renderInDom = function() {
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var tiddler = this.macroNode.store.getTiddler(this.macroNode.tiddlerTitle),
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canvas = this.macroNode.content[0].domNode,
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img = new Image();
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this.macroNode.domNode.style.position = "relative";
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img.src = "data:" + tiddler.type + ";base64," + tiddler.text;
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canvas.width = img.width;
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canvas.height = img.height;
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var ctx = canvas.getContext("2d");
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ctx.drawImage(img,0,0);
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};
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BitmapEditor.prototype.addEventHandlers = function() {
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var self = this;
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this.macroNode.domNode.addEventListener("mousedown",function(event) {
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self.brushDown = true;
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event.stopPropagation();
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return false;
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},false);
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this.macroNode.domNode.addEventListener("mousemove",function(event) {
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if(self.brushDown) {
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self.moveTo(event.clientX,event.clientY);
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event.stopPropagation();
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return false;
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}
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},false);
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this.macroNode.domNode.addEventListener("mouseup",function(event) {
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if(self.brushDown) {
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self.brushDown = false;
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self.saveChanges();
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event.stopPropagation();
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return false;
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}
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return true;
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},false);
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};
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BitmapEditor.prototype.moveTo = function(x,y) {
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var canvas = this.macroNode.content[0].domNode,
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canvasRect = canvas.getBoundingClientRect(),
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ctx = canvas.getContext("2d");
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ctx.beginPath();
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ctx.arc(x - canvasRect.left,y - canvasRect.top,10,0,Math.PI*2,false);
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ctx.fill();
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ctx.closePath();
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};
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BitmapEditor.prototype.saveChanges = function() {
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var tiddler = this.macroNode.store.getTiddler(this.macroNode.tiddlerTitle);
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if(tiddler) {
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// data URIs look like "data:<type>;base64,<text>"
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var dataURL = this.macroNode.content[0].domNode.toDataURL(tiddler.type),
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posColon = dataURL.indexOf(":"),
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posSemiColon = dataURL.indexOf(";"),
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posComma = dataURL.indexOf(","),
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type = dataURL.substring(posColon+1,posSemiColon),
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text = dataURL.substring(posComma+1);
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var update = {type: type, text: text};
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this.macroNode.store.addTiddler(new Tiddler(tiddler,update));
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}
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};
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BitmapEditor.prototype.isRefreshable = function() {
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// Don't ever refresh the bitmap editor
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return false;
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}
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function TextEditor(macroNode) {
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this.macroNode = macroNode;
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}
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TextEditor.prototype.getContent = function() {
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var tiddler = this.macroNode.store.getTiddler(this.macroNode.tiddlerTitle),
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field = this.macroNode.hasParameter("field") ? this.macroNode.params.field : "title",
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value;
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if(tiddler) {
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value = tiddler[field];
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} else {
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switch(field) {
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case "text":
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value = "Type the text for the tiddler '" + this.macroNode.tiddlerTitle + "'";
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break;
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case "title":
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value = this.macroNode.tiddlerTitle;
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break;
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default:
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value = "";
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break;
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}
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}
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var type = "div";
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if(field === "text") {
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type = "pre";
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}
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var attributes = {
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"contenteditable": true,
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"class": ["tw-edit-field"]
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};
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return [Renderer.ElementNode(type,attributes,[Renderer.TextNode(value)])];
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};
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TextEditor.prototype.getText = function(text,node) {
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if(node.nodeType === window.Node.TEXT_NODE) {
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text.push(node.data);
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} else if(node.nodeType === window.Node.ELEMENT_NODE && node.nodeName.toLowerCase() === "br") {
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@ -21,25 +130,39 @@ function getText(text,node) {
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}
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if(node.hasChildNodes && node.hasChildNodes()) {
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for(var t=0; t<node.childNodes.length; t++) {
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getText(text,node.childNodes[t]);
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this.getText(text,node.childNodes[t]);
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}
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}
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}
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};
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function handleTextChangeEvent(macroNode,event) {
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var tiddler = macroNode.store.getTiddler(macroNode.tiddlerTitle);
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if(macroNode.content[0].domNode && tiddler) {
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var text = [];
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getText(text,macroNode.content[0].domNode);
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text = text.join("");
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if(text !== tiddler[macroNode.params.field]) {
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var update = {};
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update[macroNode.params.field] = text;
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macroNode.store.addTiddler(new Tiddler(tiddler,update));
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TextEditor.prototype.addEventHandlers = function() {
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this.macroNode.domNode.addEventListener("DOMNodeInserted",this,false);
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this.macroNode.domNode.addEventListener("DOMNodeRemoved",this,false);
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this.macroNode.domNode.addEventListener("DOMCharacterDataModified",this,false);
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};
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TextEditor.prototype.handleEvent = function(event) {
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if(["DOMNodeInserted","DOMNodeRemoved","DOMCharacterDataModified"].indexOf(event.type) !== -1) {
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var tiddler = this.macroNode.store.getTiddler(this.macroNode.tiddlerTitle);
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if(this.macroNode.content[0].domNode && tiddler) {
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var text = [];
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this.getText(text,this.macroNode.content[0].domNode);
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text = text.join("");
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if(text !== tiddler[this.macroNode.params.field]) {
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var update = {};
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update[this.macroNode.params.field] = text;
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this.macroNode.store.addTiddler(new Tiddler(tiddler,update));
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}
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event.stopPropagation();
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return false;
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}
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event.stopPropagation();
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return false;
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}
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return true;
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};
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TextEditor.prototype.isRefreshable = function() {
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// Don't refresh the editor if it contains the caret or selection
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return !window.getSelection().containsNode(this.macroNode.domNode, true);
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}
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exports.macro = {
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@ -48,52 +171,38 @@ exports.macro = {
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params: {
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field: {byPos: 0, type: "text"}
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},
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events: {
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"DOMNodeInserted": function(event) {
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return handleTextChangeEvent(this,event);
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},
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"DOMNodeRemoved": function(event) {
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return handleTextChangeEvent(this,event);
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},
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"DOMCharacterDataModified": function(event) {
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return handleTextChangeEvent(this,event);
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}
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},
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execute: function() {
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var tiddler = this.store.getTiddler(this.tiddlerTitle),
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field = this.hasParameter("field") ? this.params.field : "title",
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value;
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if(tiddler) {
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value = tiddler[field];
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} else {
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switch(field) {
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case "text":
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value = "Type the text for the tiddler '" + this.tiddlerTitle + "'";
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break;
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case "title":
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value = this.tiddlerTitle;
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break;
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default:
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value = "";
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break;
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// Get the tiddler being editted
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var tiddler = this.store.getTiddler(this.tiddlerTitle);
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// Figure out which editor to use
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var editor = TextEditor;
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if(this.params.field === "text") {
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if(["image/jpg","image/jpeg","image/png","image/gif"].indexOf(tiddler.type) !== -1) {
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editor = BitmapEditor;
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}
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}
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var type = "div";
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if(field === "text") {
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type = "pre";
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this.editor = new editor(this);
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var content = this.editor.getContent();
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for(var t=0; t<content.length; t++) {
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content[t].execute(this.parents,this.tiddlerTitle);
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}
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return content;
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},
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addEventHandlers: function() {
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if(this.editor.addEventHandlers) {
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this.editor.addEventHandlers();
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}
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},
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renderInDom: function() {
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if(this.editor.renderInDom) {
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this.editor.renderInDom();
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}
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var attributes = {
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"contenteditable": true,
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"class": ["tw-edit-field"]
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};
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var editor = Renderer.ElementNode(type,attributes,[Renderer.TextNode(value)]);
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editor.execute(this.parents,this.tiddlerTitle);
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return [editor];
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},
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refreshInDom: function(changes) {
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// Only refresh if a dependency is triggered
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if(this.dependencies.hasChanged(changes,this.tiddlerTitle)) {
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// Don't refresh the editor if it contains the caret or selection
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if(!window.getSelection().containsNode(this.domNode, true)) {
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// Only refresh if the editor lets us
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if(this.editor.isRefreshable()) {
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// Remove the event handlers so they don't get triggered by the following DOM manipulations
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for(var e in exports.macro.events) {
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this.domNode.removeEventListener(e,this,false);
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