mirror of
https://github.com/scratchfoundation/paper.js.git
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137 lines
3.5 KiB
JavaScript
137 lines
3.5 KiB
JavaScript
/*
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* Paper.js
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*
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* This file is part of Paper.js, a JavaScript Vector Graphics Library,
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* based on Scriptographer.org and designed to be largely API compatible.
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* http://paperjs.org/
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* http://scriptographer.org/
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*
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* Distributed under the MIT license. See LICENSE file for details.
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*
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* Copyright (c) 2011, Juerg Lehni & Jonathan Puckey
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* http://lehni.org/ & http://jonathanpuckey.com/
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*
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* All rights reserved.
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*/
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var Project = this.Project = Base.extend({
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beans: true,
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// XXX: Add arguments to define pages, but do not pass canvas here
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initialize: function(canvas) {
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// Store reference to the currently active global paper scope:
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this._scope = paper;
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// Push it onto this._scope.projects and set index:
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this._index = this._scope.projects.push(this) - 1;
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// Activate straight away so paper.project is set, as required by
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// Layer and DoumentView constructors.
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this.activate();
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this.layers = [];
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this.views = [];
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this.symbols = [];
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this.activeLayer = new Layer();
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this.activeView = canvas ? new ProjectView(canvas) : null;
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this._selectedItems = {};
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this._selectedItemCount = 0;
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this.setCurrentStyle(null);
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},
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getCurrentStyle: function() {
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return this._currentStyle;
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},
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setCurrentStyle: function(style) {
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this._currentStyle = PathStyle.create(null, style);
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},
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activate: function() {
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if (this._index != null) {
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this._scope.project = this;
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return true;
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}
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return false;
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},
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remove: function() {
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var res = Base.splice(this._scope.projects, null, this._index, 1);
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this._scope = null;
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// Remove all views. This also removes the installed event handlers.
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for (var i = this.views.length - 1; i >= 0; i--)
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this.views[i].remove();
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return !!res.length;
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},
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getIndex: function() {
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return this._index;
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},
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getSelectedItems: function() {
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// TODO: return groups if their children are all selected,
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// and filter out their children from the list.
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// TODO: the order of these items should be that of their
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// drawing order.
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var items = [];
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Base.each(this._selectedItems, function(item) {
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items.push(item);
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});
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return items;
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},
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// TODO: implement setSelectedItems?
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_selectItem: function(item, select) {
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if (select) {
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this._selectedItemCount++;
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this._selectedItems[item.getId()] = item;
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} else {
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this._selectedItemCount--;
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delete this._selectedItems[item.getId()];
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}
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},
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/**
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* Selects all items in the project.
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*/
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selectAll: function() {
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// TODO: is using for var i in good practice?
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// or should we use Base.each? (JP)
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for (var i = 0, l = this.layers.length; i < l; i++)
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this.layers[i].setSelected(true);
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},
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/**
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* Deselects all selected items in the project.
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*/
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deselectAll: function() {
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// TODO: is using for var i in good practice?
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// or should we use Base.each? (JP)
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for (var i in this._selectedItems)
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this._selectedItems[i].setSelected(false);
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},
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draw: function(ctx) {
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ctx.save();
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var param = { offset: new Point(0, 0) };
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for (var i = 0, l = this.layers.length; i < l; i++)
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Item.draw(this.layers[i], ctx, param);
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ctx.restore();
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// Draw the selection of the selected items in the project:
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if (this._selectedItemCount > 0) {
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ctx.save();
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ctx.strokeWidth = 1;
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// TODO: use Layer#color
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ctx.strokeStyle = ctx.fillStyle = '#009dec';
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param = { selection: true };
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Base.each(this._selectedItems, function(item) {
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item.draw(ctx, param);
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});
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ctx.restore();
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}
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},
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redraw: function() {
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for (var i = 0, l = this.views.length; i < l; i++)
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this.views[i].draw();
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}
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});
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