mirror of
https://github.com/scratchfoundation/paper.js.git
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c533dda7b5
base can be accessed on named functions very easily, leading to another measurable speed increase. Finally all performance reasons against straps.js are eliminated!
3065 lines
87 KiB
JavaScript
3065 lines
87 KiB
JavaScript
/*
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* Paper.js - The Swiss Army Knife of Vector Graphics Scripting.
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* http://paperjs.org/
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*
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* Copyright (c) 2011 - 2013, Juerg Lehni & Jonathan Puckey
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* http://lehni.org/ & http://jonathanpuckey.com/
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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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* All rights reserved.
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*/
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/**
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* @name Item
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*
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* @class The Item type allows you to access and modify the items in
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* Paper.js projects. Its functionality is inherited by different project
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* item types such as {@link Path}, {@link CompoundPath}, {@link Group},
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* {@link Layer} and {@link Raster}. They each add a layer of functionality that
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* is unique to their type, but share the underlying properties and functions
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* that they inherit from Item.
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*/
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var Item = this.Item = Base.extend(Callback, /** @lends Item# */{
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statics: {
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/**
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* Override Item.extend() to merge the subclass' _serializeFields with
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* the parent class' _serializeFields.
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*/
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extend: function extend(src) {
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if (src._serializeFields)
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src._serializeFields = Base.merge(
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this.prototype._serializeFields, src._serializeFields);
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// Derive the _type string from _class
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if (src._class)
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src._type = Base.hyphenate(src._class);
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return extend.base.apply(this, arguments);
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}
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},
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// All items apply their matrix by default.
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// Exceptions are Raster, PlacedSymbol, Clip and Shape.
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_applyMatrix: true,
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_boundsSelected: false,
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// Provide information about fields to be serialized, with their defaults
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// that can be ommited.
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_serializeFields: {
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name: null,
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matrix: new Matrix(),
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locked: false,
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visible: true,
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blendMode: 'normal',
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opacity: 1,
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guide: false,
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clipMask: false,
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data: {}
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},
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initialize: function(point) {
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// Define this Item's unique id.
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this._id = Item._id = (Item._id || 0) + 1;
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// If _project is already set, the item was already moved into the DOM
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// hierarchy. Used by Layer, where it's added to project.layers instead
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if (!this._project) {
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var project = paper.project,
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layer = project.activeLayer;
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if (layer)
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layer.addChild(this);
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else
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this._setProject(project);
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}
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this._style = new Style(this._project._currentStyle);
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this._style._item = this;
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this._matrix = new Matrix();
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if (point)
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this._matrix.translate(point);
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},
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_events: new function() {
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// Flags defining which native events are required by which Paper events
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// as required for counting amount of necessary natives events.
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// The mapping is native -> virtual
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var mouseFlags = {
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mousedown: {
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mousedown: 1,
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mousedrag: 1,
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click: 1,
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doubleclick: 1
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},
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mouseup: {
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mouseup: 1,
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mousedrag: 1,
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click: 1,
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doubleclick: 1
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},
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mousemove: {
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mousedrag: 1,
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mousemove: 1,
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mouseenter: 1,
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mouseleave: 1
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}
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};
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// Entry for all mouse events in the _events list
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var mouseEvent = {
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install: function(type) {
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// If the view requires counting of installed mouse events,
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// increase the counters now according to mouseFlags
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var counters = this._project.view._eventCounters;
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if (counters) {
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for (var key in mouseFlags) {
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counters[key] = (counters[key] || 0)
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+ (mouseFlags[key][type] || 0);
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}
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}
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},
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uninstall: function(type) {
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// If the view requires counting of installed mouse events,
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// decrease the counters now according to mouseFlags
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var counters = this._project.view._eventCounters;
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if (counters) {
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for (var key in mouseFlags)
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counters[key] -= mouseFlags[key][type] || 0;
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}
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}
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};
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return Base.each(['onMouseDown', 'onMouseUp', 'onMouseDrag', 'onClick',
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'onDoubleClick', 'onMouseMove', 'onMouseEnter', 'onMouseLeave'],
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function(name) {
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this[name] = mouseEvent;
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}, {
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onFrame: {
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install: function() {
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this._project.view._animateItem(this, true);
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},
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uninstall: function() {
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this._project.view._animateItem(this, false);
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}
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},
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// Only for external sources, e.g. Raster
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onLoad: {}
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}
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);
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},
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_serialize: function(options, dictionary) {
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var props = {},
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that = this;
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function serialize(fields) {
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for (var key in fields) {
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var value = that[key];
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if (!Base.equals(value, fields[key]))
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props[key] = Base.serialize(value, options,
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// Do not use compact mode for data
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key !== 'data', dictionary);
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}
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}
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// Serialize fields that this Item subclass defines first
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serialize(this._serializeFields);
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// Serialize style fields, but only if they differ from defaults.
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// Do not serialize styles on Groups and Layers, since they just unify
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// their children's own styles.
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if (!(this instanceof Group))
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serialize(this._style._defaults);
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// There is no compact form for Item serialization, we always keep the
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// type.
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return [ this._class, props ];
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},
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/**
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* Private notifier that is called whenever a change occurs in this item or
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* its sub-elements, such as Segments, Curves, Styles, etc.
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*
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* @param {ChangeFlag} flags describes what exactly has changed.
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*/
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_changed: function(flags) {
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if (flags & /*#=*/ ChangeFlag.GEOMETRY) {
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// Clear cached bounds and position whenever geometry changes
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delete this._bounds;
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delete this._position;
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}
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if (this._parent
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&& (flags & (/*#=*/ ChangeFlag.GEOMETRY | /*#=*/ ChangeFlag.STROKE))) {
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// Clear cached bounds of all items that this item contributes to.
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// We call this on the parent, since the information is cached on
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// the parent, see getBounds().
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this._parent._clearBoundsCache();
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}
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if (flags & /*#=*/ ChangeFlag.HIERARCHY) {
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// Clear cached bounds of all items that this item contributes to.
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// We don't call this on the parent, since we're already the parent
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// of the child that modified the hierarchy (that's where these
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// HIERARCHY notifications go)
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this._clearBoundsCache();
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}
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if (flags & /*#=*/ ChangeFlag.APPEARANCE) {
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this._project._needsRedraw();
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}
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// If this item is a symbol's definition, notify it of the change too
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if (this._parentSymbol)
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this._parentSymbol._changed(flags);
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// Have project keep track of changed items, so they can be iterated.
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// This can be used for example to update the SVG tree. Needs to be
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// activated in Project
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if (this._project._changes) {
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var entry = this._project._changesById[this._id];
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if (entry) {
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entry.flags |= flags;
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} else {
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entry = { item: this, flags: flags };
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this._project._changesById[this._id] = entry;
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this._project._changes.push(entry);
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}
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}
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},
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/**
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* Sets those properties of the passed object literal on this item to
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* the values defined in the object literal, if the item has property of the
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* given name (or a setter defined for it).
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* @param {Object} props
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* @return {Item} the item itself.
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*
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* @example {@paperscript}
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* // Setting properties through an object literal
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* var circle = new Path.Circle({
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* center: [80, 50],
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* radius: 35
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* });
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*
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* circle.set({
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* strokeColor: 'red',
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* strokeWidth: 10,
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* fillColor: 'black',
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* selected: true
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* });
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*/
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set: function(props) {
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if (props)
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this._set(props);
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return this;
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},
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/**
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* The unique id of the item.
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*
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* @type Number
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* @bean
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*/
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getId: function() {
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return this._id;
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},
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/**
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* The type of the item as a string.
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*
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* @type String('group', 'layer', 'path', 'compound-path', 'raster',
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* 'placed-symbol', 'point-text')
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* @bean
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*/
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getType: function() {
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return this._type;
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},
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/**
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* The name of the item. If the item has a name, it can be accessed by name
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* through its parent's children list.
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*
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* @type String
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* @bean
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*
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* @example {@paperscript}
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* var path = new Path.Circle({
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* center: [80, 50],
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* radius: 35
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* });
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* // Set the name of the path:
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* path.name = 'example';
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*
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* // Create a group and add path to it as a child:
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* var group = new Group();
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* group.addChild(path);
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*
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* // The path can be accessed by name:
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* group.children['example'].fillColor = 'red';
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*/
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getName: function() {
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return this._name;
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},
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setName: function(name, unique) {
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// Note: Don't check if the name has changed and bail out if it has not,
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// because setName is used internally also to update internal structures
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// when an item is moved from one parent to another.
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// If the item already had a name, remove the reference to it from the
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// parent's children object:
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if (this._name)
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this._removeFromNamed();
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if (name && this._parent) {
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var children = this._parent._children,
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namedChildren = this._parent._namedChildren,
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orig = name,
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i = 1;
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// If unique is true, make sure we're not overriding other names
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while (unique && children[name])
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name = orig + ' ' + (i++);
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(namedChildren[name] = namedChildren[name] || []).push(this);
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children[name] = this;
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}
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this._name = name || undefined;
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this._changed(/*#=*/ ChangeFlag.ATTRIBUTE);
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},
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/**
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* The path style of the item.
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*
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* @name Item#getStyle
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* @type Style
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* @bean
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*
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* @example {@paperscript}
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* // Applying several styles to an item in one go, by passing an object
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* // to its style property:
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* var circle = new Path.Circle({
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* center: [80, 50],
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* radius: 30
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* });
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* circle.style = {
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* fillColor: 'blue',
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* strokeColor: 'red',
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* strokeWidth: 5
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* };
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*
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* @example {@paperscript split=true height=100}
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* // Copying the style of another item:
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* var path = new Path.Circle({
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* center: [50, 50],
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* radius: 30,
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* fillColor: 'red'
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* });
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*
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* var path2 = new Path.Circle({
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* center: new Point(180, 50),
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* radius: 20
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* });
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*
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* // Copy the path style of path:
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* path2.style = path.style;
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*
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* @example {@paperscript}
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* // Applying the same style object to multiple items:
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* var myStyle = {
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* fillColor: 'red',
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* strokeColor: 'blue',
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* strokeWidth: 4
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* };
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*
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* var path = new Path.Circle({
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* center: [50, 50],
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* radius: 30
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* });
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* path.style = myStyle;
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*
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* var path2 = new Path.Circle({
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* center: new Point(150, 50),
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* radius: 20
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* });
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* path2.style = myStyle;
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*/
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getStyle: function() {
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return this._style;
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},
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setStyle: function(style) {
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this._style.initialize(style);
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},
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hasFill: function() {
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return !!this._style.getFillColor();
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}
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}, Base.each(['locked', 'visible', 'blendMode', 'opacity', 'guide'],
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// Produce getter/setters for properties. We need setters because we want to
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// call _changed() if a property was modified.
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function(name) {
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var part = Base.capitalize(name),
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name = '_' + name;
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this['get' + part] = function() {
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return this[name];
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};
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this['set' + part] = function(value) {
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if (value != this[name]) {
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this[name] = value;
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// #locked does not change appearance, all others do:
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this._changed(name === '_locked'
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? /*#=*/ ChangeFlag.ATTRIBUTE : /*#=*/ Change.ATTRIBUTE);
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}
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};
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}, {}), /** @lends Item# */{
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// Note: These properties have their getter / setters produced in the
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// injection scope above.
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/**
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* Specifies whether the item is locked.
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*
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* @name Item#locked
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* @type Boolean
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* @default false
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* @ignore
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*/
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_locked: false,
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/**
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* Specifies whether the item is visible. When set to {@code false}, the
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* item won't be drawn.
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*
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* @name Item#visible
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* @type Boolean
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* @default true
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*
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* @example {@paperscript}
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* // Hiding an item:
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* var path = new Path.Circle({
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* center: [50, 50],
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* radius: 20,
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* fillColor: 'red'
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* });
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*
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* // Hide the path:
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* path.visible = false;
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*/
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_visible: true,
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/**
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* The blend mode of the item.
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*
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* @name Item#blendMode
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* @type String('normal', 'multiply', 'screen', 'overlay', 'soft-light',
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* 'hard-light', 'color-dodge', 'color-burn', 'darken', 'lighten',
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* 'difference', 'exclusion', 'hue', 'saturation', 'luminosity', 'color',
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* 'add', 'subtract', 'average', 'pin-light', 'negation')
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* @default 'normal'
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*
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* @example {@paperscript}
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* // Setting an item's blend mode:
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*
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* // Create a white rectangle in the background
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* // with the same dimensions as the view:
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* var background = new Path.Rectangle(view.bounds);
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* background.fillColor = 'white';
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*
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* var circle = new Path.Circle({
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* center: [80, 50],
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* radius: 35,
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* fillColor: 'red'
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* });
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*
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* var circle2 = new Path.Circle({
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* center: new Point(120, 50),
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* radius: 35,
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* fillColor: 'blue'
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* });
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*
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* // Set the blend mode of circle2:
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* circle2.blendMode = 'multiply';
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*/
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_blendMode: 'normal',
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/**
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* The opacity of the item as a value between {@code 0} and {@code 1}.
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*
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* @name Item#opacity
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* @type Number
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* @default 1
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*
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* @example {@paperscript}
|
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* // Making an item 50% transparent:
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* var circle = new Path.Circle({
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* center: [80, 50],
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* radius: 35,
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* fillColor: 'red'
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* });
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*
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* var circle2 = new Path.Circle({
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* center: new Point(120, 50),
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* radius: 35,
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* fillColor: 'blue',
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* strokeColor: 'green',
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* strokeWidth: 10
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* });
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*
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* // Make circle2 50% transparent:
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* circle2.opacity = 0.5;
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*/
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_opacity: 1,
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// TODO: Implement guides
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/**
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* Specifies whether the item functions as a guide. When set to
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* {@code true}, the item will be drawn at the end as a guide.
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*
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* @name Item#guide
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* @type Boolean
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* @default true
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* @ignore
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*/
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_guide: false,
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/**
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* Specifies whether an item is selected and will also return {@code true}
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* if the item is partially selected (groups with some selected or partially
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* selected paths).
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*
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* Paper.js draws the visual outlines of selected items on top of your
|
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* project. This can be useful for debugging, as it allows you to see the
|
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* construction of paths, position of path curves, individual segment points
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* and bounding boxes of symbol and raster items.
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*
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* @type Boolean
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* @default false
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* @bean
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* @see Project#selectedItems
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* @see Segment#selected
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* @see Point#selected
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*
|
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* @example {@paperscript}
|
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* // Selecting an item:
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* var path = new Path.Circle({
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* center: [80, 50],
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* radius: 35
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* });
|
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* path.selected = true; // Select the path
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*/
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isSelected: function() {
|
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if (this._children) {
|
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for (var i = 0, l = this._children.length; i < l; i++)
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if (this._children[i].isSelected())
|
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return true;
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}
|
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return this._selected;
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},
|
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|
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setSelected: function(selected /*, noChildren */) {
|
|
// Don't recursively call #setSelected() if it was called with
|
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// noChildren set to true, see #setFullySelected().
|
|
if (this._children && !arguments[1]) {
|
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for (var i = 0, l = this._children.length; i < l; i++)
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this._children[i].setSelected(selected);
|
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}
|
|
if ((selected = !!selected) != this._selected) {
|
|
this._selected = selected;
|
|
this._project._updateSelection(this);
|
|
this._changed(/*#=*/ Change.ATTRIBUTE);
|
|
}
|
|
},
|
|
|
|
_selected: false,
|
|
|
|
isFullySelected: function() {
|
|
if (this._children && this._selected) {
|
|
for (var i = 0, l = this._children.length; i < l; i++)
|
|
if (!this._children[i].isFullySelected())
|
|
return false;
|
|
return true;
|
|
}
|
|
// If there are no children, this is the same as #selected
|
|
return this._selected;
|
|
},
|
|
|
|
setFullySelected: function(selected) {
|
|
if (this._children) {
|
|
for (var i = 0, l = this._children.length; i < l; i++)
|
|
this._children[i].setFullySelected(selected);
|
|
}
|
|
// Pass true for hidden noChildren argument
|
|
this.setSelected(selected, true);
|
|
},
|
|
|
|
/**
|
|
* Specifies whether the item defines a clip mask. This can only be set on
|
|
* paths, compound paths, and text frame objects, and only if the item is
|
|
* already contained within a clipping group.
|
|
*
|
|
* @type Boolean
|
|
* @default false
|
|
* @bean
|
|
*/
|
|
isClipMask: function() {
|
|
return this._clipMask;
|
|
},
|
|
|
|
setClipMask: function(clipMask) {
|
|
// On-the-fly conversion to boolean:
|
|
if (this._clipMask != (clipMask = !!clipMask)) {
|
|
this._clipMask = clipMask;
|
|
if (clipMask) {
|
|
this.setFillColor(null);
|
|
this.setStrokeColor(null);
|
|
}
|
|
this._changed(/*#=*/ Change.ATTRIBUTE);
|
|
// Tell the parent the clipping mask has changed
|
|
if (this._parent)
|
|
this._parent._changed(/*#=*/ ChangeFlag.CLIPPING);
|
|
}
|
|
},
|
|
|
|
_clipMask: false,
|
|
|
|
// TODO: get/setIsolated (print specific feature)
|
|
// TODO: get/setKnockout (print specific feature)
|
|
// TODO: get/setAlphaIsShape
|
|
|
|
/**
|
|
* A plain javascript object which can be used to store
|
|
* arbitrary data on the item.
|
|
*
|
|
* @type Object
|
|
* @bean
|
|
*
|
|
* @example
|
|
* var path = new Path();
|
|
* path.data.remember = 'milk';
|
|
*
|
|
* @example
|
|
* var path = new Path();
|
|
* path.data.malcolm = new Point(20, 30);
|
|
* console.log(path.data.malcolm.x); // 20
|
|
*
|
|
* @example
|
|
* var path = new Path();
|
|
* path.data = {
|
|
* home: 'Omicron Theta',
|
|
* found: 2338,
|
|
* pets: ['Spot']
|
|
* };
|
|
* console.log(path.data.pets.length); // 1
|
|
*
|
|
* @example
|
|
* var path = new Path({
|
|
* data: {
|
|
* home: 'Omicron Theta',
|
|
* found: 2338,
|
|
* pets: ['Spot']
|
|
* }
|
|
* });
|
|
* console.log(path.data.pets.length); // 1
|
|
*/
|
|
getData: function() {
|
|
if (!this._data)
|
|
this._data = {};
|
|
return this._data;
|
|
},
|
|
|
|
setData: function(data) {
|
|
this._data = data;
|
|
},
|
|
|
|
/**
|
|
* {@grouptitle Position and Bounding Boxes}
|
|
*
|
|
* The item's position within the project. This is the
|
|
* {@link Rectangle#center} of the item's {@link #bounds} rectangle.
|
|
*
|
|
* @type Point
|
|
* @bean
|
|
*
|
|
* @example {@paperscript}
|
|
* // Changing the position of a path:
|
|
*
|
|
* // Create a circle at position { x: 10, y: 10 }
|
|
* var circle = new Path.Circle({
|
|
* center: new Point(10, 10),
|
|
* radius: 10,
|
|
* fillColor: 'red'
|
|
* });
|
|
*
|
|
* // Move the circle to { x: 20, y: 20 }
|
|
* circle.position = new Point(20, 20);
|
|
*
|
|
* // Move the circle 100 points to the right and 50 points down
|
|
* circle.position += new Point(100, 50);
|
|
*
|
|
* @example {@paperscript split=true height=100}
|
|
* // Changing the x coordinate of an item's position:
|
|
*
|
|
* // Create a circle at position { x: 20, y: 20 }
|
|
* var circle = new Path.Circle({
|
|
* center: new Point(20, 20),
|
|
* radius: 10,
|
|
* fillColor: 'red'
|
|
* });
|
|
*
|
|
* // Move the circle 100 points to the right
|
|
* circle.position.x += 100;
|
|
*/
|
|
getPosition: function(/* dontLink */) {
|
|
// Cache position value.
|
|
// Pass true for dontLink in getCenter(), so receive back a normal point
|
|
var pos = this._position
|
|
|| (this._position = this.getBounds().getCenter(true));
|
|
// Do not cache LinkedPoints directly, since we would not be able to
|
|
// use them to calculate the difference in #setPosition, as when it is
|
|
// modified, it would hold new values already and only then cause the
|
|
// calling of #setPosition.
|
|
return arguments[0] ? pos
|
|
: LinkedPoint.create(this, 'setPosition', pos.x, pos.y);
|
|
},
|
|
|
|
setPosition: function(point) {
|
|
// Calculate the distance to the current position, by which to
|
|
// translate the item. Pass true for dontLink, as we do not need a
|
|
// LinkedPoint to simply calculate this distance.
|
|
this.translate(Point.read(arguments).subtract(this.getPosition(true)));
|
|
},
|
|
|
|
/**
|
|
* The item's transformation matrix, defining position and dimensions in the
|
|
* document.
|
|
*
|
|
* @type Matrix
|
|
* @bean
|
|
*/
|
|
getMatrix: function() {
|
|
return this._matrix;
|
|
},
|
|
|
|
setMatrix: function(matrix) {
|
|
// Use Matrix#initialize to easily copy over values.
|
|
this._matrix.initialize(matrix);
|
|
this._changed(/*#=*/ Change.GEOMETRY);
|
|
},
|
|
|
|
/**
|
|
* Specifies wether the item has any content or not. The meaning of what
|
|
* content is differs from type to type. For example, a {@link Group} with
|
|
* no children, a {@link TextItem} with no text content and a {@link Path}
|
|
* with no segments all are considered empty.
|
|
*
|
|
* @type Boolean
|
|
*/
|
|
isEmpty: function() {
|
|
return this._children.length == 0;
|
|
}
|
|
}, Base.each(['getBounds', 'getStrokeBounds', 'getHandleBounds', 'getRoughBounds'],
|
|
function(name) {
|
|
// Produce getters for bounds properties. These handle caching, matrices
|
|
// and redirect the call to the private _getBounds, which can be
|
|
// overridden by subclasses, see below.
|
|
this[name] = function(/* matrix */) {
|
|
var getter = this._boundsGetter,
|
|
// Allow subclasses to override _boundsGetter if they use
|
|
// the same calculations for multiple type of bounds.
|
|
// The default is name:
|
|
bounds = this._getCachedBounds(typeof getter == 'string'
|
|
? getter : getter && getter[name] || name, arguments[0]);
|
|
// If we're returning 'bounds', create a LinkedRectangle that uses
|
|
// the setBounds() setter to update the Item whenever the bounds are
|
|
// changed:
|
|
return name == 'getBounds'
|
|
? LinkedRectangle.create(this, 'setBounds',
|
|
bounds.x, bounds.y, bounds.width, bounds.height)
|
|
// Return a clone of the cahce, so modifications won't
|
|
// affect it.
|
|
: bounds;
|
|
};
|
|
},
|
|
/** @lends Item# */{
|
|
/**
|
|
* Private method that deals with the calling of _getBounds, recursive
|
|
* matrix concatenation and handles all the complicated caching mechanisms.
|
|
*/
|
|
_getCachedBounds: function(getter, matrix, cacheItem) {
|
|
// See if we can cache these bounds. We only cache the bounds
|
|
// transformed with the internally stored _matrix, (the default if no
|
|
// matrix is passed).
|
|
var cache = (!matrix || matrix.equals(this._matrix)) && getter;
|
|
// Set up a boundsCache structure that keeps track of items that keep
|
|
// cached bounds that depend on this item. We store this in our parent,
|
|
// for multiple reasons:
|
|
// The parent receives HIERARCHY change notifications for when its
|
|
// children are added or removed and can thus clear the cache, and we
|
|
// save a lot of memory, e.g. when grouping 100 items and asking the
|
|
// group for its bounds. If stored on the children, we would have 100
|
|
// times the same structure.
|
|
// Note: This needs to happen before returning cached values, since even
|
|
// then, _boundsCache needs to be kept up-to-date.
|
|
if (cacheItem && this._parent) {
|
|
// Set-up the parent's boundsCache structure if it does not
|
|
// exist yet and add the cacheItem to it.
|
|
var id = cacheItem._id,
|
|
ref = this._parent._boundsCache
|
|
= this._parent._boundsCache || {
|
|
// Use both a hashtable for ids and an array for the list,
|
|
// so we can keep track of items that were added already
|
|
ids: {},
|
|
list: []
|
|
};
|
|
if (!ref.ids[id]) {
|
|
ref.list.push(cacheItem);
|
|
ref.ids[id] = cacheItem;
|
|
}
|
|
}
|
|
if (cache && this._bounds && this._bounds[cache])
|
|
return this._bounds[cache].clone();
|
|
// If the result of concatinating the passed matrix with our internal
|
|
// one is an identity transformation, set it to null for faster
|
|
// processing
|
|
var identity = this._matrix.isIdentity();
|
|
matrix = !matrix || matrix.isIdentity()
|
|
? identity ? null : this._matrix
|
|
: identity ? matrix : matrix.clone().concatenate(this._matrix);
|
|
// If we're caching bounds on this item, pass it on as cacheItem, so the
|
|
// children can setup the _boundsCache structures for it.
|
|
var bounds = this._getBounds(getter, matrix, cache ? this : cacheItem);
|
|
// If we can cache the result, update the _bounds cache structure
|
|
// before returning
|
|
if (cache) {
|
|
if (!this._bounds)
|
|
this._bounds = {};
|
|
this._bounds[cache] = bounds.clone();
|
|
}
|
|
return bounds;
|
|
},
|
|
|
|
/**
|
|
* Clears cached bounds of all items that the children of this item are
|
|
* contributing to. See #_getCachedBounds() for an explanation why this
|
|
* information is stored on parents, not the children themselves.
|
|
*/
|
|
_clearBoundsCache: function() {
|
|
if (this._boundsCache) {
|
|
for (var i = 0, list = this._boundsCache.list, l = list.length;
|
|
i < l; i++) {
|
|
var item = list[i];
|
|
delete item._bounds;
|
|
// We need to recursively call _clearBoundsCache, because if the
|
|
// cache for this item's children is not valid anymore, that
|
|
// propagates up the DOM tree.
|
|
if (item != this && item._boundsCache)
|
|
item._clearBoundsCache();
|
|
}
|
|
delete this._boundsCache;
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Protected method used in all the bounds getters. It loops through all the
|
|
* children, gets their bounds and finds the bounds around all of them.
|
|
* Subclasses override it to define calculations for the various required
|
|
* bounding types.
|
|
*/
|
|
_getBounds: function(getter, matrix, cacheItem) {
|
|
// Note: We cannot cache these results here, since we do not get
|
|
// _changed() notifications here for changing geometry in children.
|
|
// But cacheName is used in sub-classes such as PlacedSymbol and Raster.
|
|
var children = this._children;
|
|
// TODO: What to return if nothing is defined, e.g. empty Groups?
|
|
// Scriptographer behaves weirdly then too.
|
|
if (!children || children.length == 0)
|
|
return new Rectangle();
|
|
var x1 = Infinity,
|
|
x2 = -x1,
|
|
y1 = x1,
|
|
y2 = x2;
|
|
for (var i = 0, l = children.length; i < l; i++) {
|
|
var child = children[i];
|
|
if (child._visible && !child.isEmpty()) {
|
|
var rect = child._getCachedBounds(getter, matrix, cacheItem);
|
|
x1 = Math.min(rect.x, x1);
|
|
y1 = Math.min(rect.y, y1);
|
|
x2 = Math.max(rect.x + rect.width, x2);
|
|
y2 = Math.max(rect.y + rect.height, y2);
|
|
}
|
|
}
|
|
return isFinite(x1)
|
|
? Rectangle.create(x1, y1, x2 - x1, y2 - y1)
|
|
: new Rectangle();
|
|
},
|
|
|
|
setBounds: function(rect) {
|
|
rect = Rectangle.read(arguments);
|
|
var bounds = this.getBounds(),
|
|
matrix = new Matrix(),
|
|
center = rect.getCenter();
|
|
// Read this from bottom to top:
|
|
// Translate to new center:
|
|
matrix.translate(center);
|
|
// Scale to new Size, if size changes and avoid divisions by 0:
|
|
if (rect.width != bounds.width || rect.height != bounds.height) {
|
|
matrix.scale(
|
|
bounds.width != 0 ? rect.width / bounds.width : 1,
|
|
bounds.height != 0 ? rect.height / bounds.height : 1);
|
|
}
|
|
// Translate to bounds center:
|
|
center = bounds.getCenter();
|
|
matrix.translate(-center.x, -center.y);
|
|
// Now execute the transformation
|
|
this.transform(matrix);
|
|
}
|
|
|
|
/**
|
|
* The bounding rectangle of the item excluding stroke width.
|
|
*
|
|
* @name Item#getBounds
|
|
* @type Rectangle
|
|
* @bean
|
|
*/
|
|
|
|
/**
|
|
* The bounding rectangle of the item including stroke width.
|
|
*
|
|
* @name Item#getStrokeBounds
|
|
* @type Rectangle
|
|
* @bean
|
|
*/
|
|
|
|
/**
|
|
* The bounding rectangle of the item including handles.
|
|
*
|
|
* @name Item#getHandleBounds
|
|
* @type Rectangle
|
|
* @bean
|
|
*/
|
|
|
|
/**
|
|
* The rough bounding rectangle of the item that is shure to include all of
|
|
* the drawing, including stroke width.
|
|
*
|
|
* @name Item#getRoughBounds
|
|
* @type Rectangle
|
|
* @bean
|
|
* @ignore
|
|
*/
|
|
}), /** @lends Item# */{
|
|
/**
|
|
* {@grouptitle Project Hierarchy}
|
|
* The project that this item belongs to.
|
|
*
|
|
* @type Project
|
|
* @bean
|
|
*/
|
|
getProject: function() {
|
|
return this._project;
|
|
},
|
|
|
|
_setProject: function(project) {
|
|
if (this._project != project) {
|
|
this._project = project;
|
|
if (this._children) {
|
|
for (var i = 0, l = this._children.length; i < l; i++) {
|
|
this._children[i]._setProject(project);
|
|
}
|
|
}
|
|
}
|
|
},
|
|
|
|
/**
|
|
* The layer that this item is contained within.
|
|
*
|
|
* @type Layer
|
|
* @bean
|
|
*/
|
|
getLayer: function() {
|
|
var parent = this;
|
|
while (parent = parent._parent) {
|
|
if (parent instanceof Layer)
|
|
return parent;
|
|
}
|
|
return null;
|
|
},
|
|
|
|
/**
|
|
* The item that this item is contained within.
|
|
*
|
|
* @type Item
|
|
* @bean
|
|
*
|
|
* @example
|
|
* var path = new Path();
|
|
*
|
|
* // New items are placed in the active layer:
|
|
* console.log(path.parent == project.activeLayer); // true
|
|
*
|
|
* var group = new Group();
|
|
* group.addChild(path);
|
|
*
|
|
* // Now the parent of the path has become the group:
|
|
* console.log(path.parent == group); // true
|
|
*
|
|
* @example // Setting the parent of the item to another item
|
|
* var path = new Path();
|
|
*
|
|
* // New items are placed in the active layer:
|
|
* console.log(path.parent == project.activeLayer); // true
|
|
*
|
|
* var group = new Group();
|
|
* group.parent = path;
|
|
*
|
|
* // Now the parent of the path has become the group:
|
|
* console.log(path.parent == group); // true
|
|
*
|
|
* // The path is now contained in the children list of group:
|
|
* console.log(group.children[0] == path); // true
|
|
*
|
|
* @example // Setting the parent of an item in the constructor
|
|
* var group = new Group();
|
|
*
|
|
* var path = new Path({
|
|
* parent: group
|
|
* });
|
|
*
|
|
* // The parent of the path is the group:
|
|
* console.log(path.parent == group); // true
|
|
*
|
|
* // The path is contained in the children list of group:
|
|
* console.log(group.children[0] == path); // true
|
|
*/
|
|
getParent: function() {
|
|
return this._parent;
|
|
},
|
|
|
|
setParent: function(item) {
|
|
return item.addChild(this);
|
|
},
|
|
|
|
/**
|
|
* The children items contained within this item. Items that define a
|
|
* {@link #name} can also be accessed by name.
|
|
*
|
|
* <b>Please note:</b> The children array should not be modified directly
|
|
* using array functions. To remove single items from the children list, use
|
|
* {@link Item#remove()}, to remove all items from the children list, use
|
|
* {@link Item#removeChildren()}. To add items to the children list, use
|
|
* {@link Item#addChild(item)} or {@link Item#insertChild(index,item)}.
|
|
*
|
|
* @type Item[]
|
|
* @bean
|
|
*
|
|
* @example {@paperscript}
|
|
* // Accessing items in the children array:
|
|
* var path = new Path.Circle({
|
|
* center: [80, 50],
|
|
* radius: 35
|
|
* });
|
|
*
|
|
* // Create a group and move the path into it:
|
|
* var group = new Group();
|
|
* group.addChild(path);
|
|
*
|
|
* // Access the path through the group's children array:
|
|
* group.children[0].fillColor = 'red';
|
|
*
|
|
* @example {@paperscript}
|
|
* // Accessing children by name:
|
|
* var path = new Path.Circle({
|
|
* center: [80, 50],
|
|
* radius: 35
|
|
* });
|
|
* // Set the name of the path:
|
|
* path.name = 'example';
|
|
*
|
|
* // Create a group and move the path into it:
|
|
* var group = new Group();
|
|
* group.addChild(path);
|
|
*
|
|
* // The path can be accessed by name:
|
|
* group.children['example'].fillColor = 'orange';
|
|
*
|
|
* @example {@paperscript}
|
|
* // Passing an array of items to item.children:
|
|
* var path = new Path.Circle({
|
|
* center: [80, 50],
|
|
* radius: 35
|
|
* });
|
|
*
|
|
* var group = new Group();
|
|
* group.children = [path];
|
|
*
|
|
* // The path is the first child of the group:
|
|
* group.firstChild.fillColor = 'green';
|
|
*/
|
|
getChildren: function() {
|
|
return this._children;
|
|
},
|
|
|
|
setChildren: function(items) {
|
|
this.removeChildren();
|
|
this.addChildren(items);
|
|
},
|
|
|
|
/**
|
|
* The first item contained within this item. This is a shortcut for
|
|
* accessing {@code item.children[0]}.
|
|
*
|
|
* @type Item
|
|
* @bean
|
|
*/
|
|
getFirstChild: function() {
|
|
return this._children && this._children[0] || null;
|
|
},
|
|
|
|
/**
|
|
* The last item contained within this item.This is a shortcut for
|
|
* accessing {@code item.children[item.children.length - 1]}.
|
|
*
|
|
* @type Item
|
|
* @bean
|
|
*/
|
|
getLastChild: function() {
|
|
return this._children && this._children[this._children.length - 1]
|
|
|| null;
|
|
},
|
|
|
|
/**
|
|
* The next item on the same level as this item.
|
|
*
|
|
* @type Item
|
|
* @bean
|
|
*/
|
|
getNextSibling: function() {
|
|
return this._parent && this._parent._children[this._index + 1] || null;
|
|
},
|
|
|
|
/**
|
|
* The previous item on the same level as this item.
|
|
*
|
|
* @type Item
|
|
* @bean
|
|
*/
|
|
getPreviousSibling: function() {
|
|
return this._parent && this._parent._children[this._index - 1] || null;
|
|
},
|
|
|
|
/**
|
|
* The index of this item within the list of its parent's children.
|
|
*
|
|
* @type Number
|
|
* @bean
|
|
*/
|
|
getIndex: function() {
|
|
return this._index;
|
|
},
|
|
|
|
/**
|
|
* Checks whether the item and all its parents are inserted into the DOM or
|
|
* not.
|
|
*
|
|
* @return {Boolean} {@true if the item is inserted into the DOM}
|
|
*/
|
|
isInserted: function() {
|
|
return this._parent ? this._parent.isInserted() : false;
|
|
},
|
|
|
|
/**
|
|
* Clones the item within the same project and places the copy above the
|
|
* item.
|
|
*
|
|
* @return {Item} the newly cloned item
|
|
*
|
|
* @example {@paperscript}
|
|
* // Cloning items:
|
|
* var circle = new Path.Circle({
|
|
* center: [50, 50],
|
|
* radius: 10,
|
|
* fillColor: 'red'
|
|
* });
|
|
*
|
|
* // Make 20 copies of the circle:
|
|
* for (var i = 0; i < 20; i++) {
|
|
* var copy = circle.clone();
|
|
*
|
|
* // Distribute the copies horizontally, so we can see them:
|
|
* copy.position.x += i * copy.bounds.width;
|
|
* }
|
|
*/
|
|
clone: function() {
|
|
return this._clone(new this.constructor());
|
|
},
|
|
|
|
_clone: function(copy) {
|
|
// Copy over style
|
|
copy.setStyle(this._style);
|
|
// If this item has children, clone and append each of them:
|
|
if (this._children) {
|
|
// Clone all children and add them to the copy. tell #addChild we're
|
|
// cloning, as needed by CompoundPath#insertChild().
|
|
for (var i = 0, l = this._children.length; i < l; i++)
|
|
copy.addChild(this._children[i].clone(), true);
|
|
}
|
|
// Only copy over these fields if they are actually defined in 'this'
|
|
// TODO: Consider moving this to Base once it's useful in more than one
|
|
// place
|
|
var keys = ['_locked', '_visible', '_blendMode', '_opacity',
|
|
'_clipMask', '_guide'];
|
|
for (var i = 0, l = keys.length; i < l; i++) {
|
|
var key = keys[i];
|
|
if (this.hasOwnProperty(key))
|
|
copy[key] = this[key];
|
|
}
|
|
// Use Matrix#initialize to easily copy over values.
|
|
copy._matrix.initialize(this._matrix);
|
|
// Copy over the selection state, use setSelected so the item
|
|
// is also added to Project#selectedItems if it is selected.
|
|
copy.setSelected(this._selected);
|
|
// Clone the name too, but make sure we're not overriding the original
|
|
// in the same parent, by passing true for the unique parameter.
|
|
if (this._name)
|
|
copy.setName(this._name, true);
|
|
return copy;
|
|
},
|
|
|
|
/**
|
|
* When passed a project, copies the item to the project,
|
|
* or duplicates it within the same project. When passed an item,
|
|
* copies the item into the specified item.
|
|
*
|
|
* @param {Project|Layer|Group|CompoundPath} item the item or project to
|
|
* copy the item to
|
|
* @return {Item} the new copy of the item
|
|
*/
|
|
copyTo: function(itemOrProject) {
|
|
var copy = this.clone();
|
|
if (itemOrProject.layers) {
|
|
itemOrProject.activeLayer.addChild(copy);
|
|
} else {
|
|
itemOrProject.addChild(copy);
|
|
}
|
|
return copy;
|
|
},
|
|
|
|
/**
|
|
* Rasterizes the item into a newly created Raster object. The item itself
|
|
* is not removed after rasterization.
|
|
*
|
|
* @param {Number} [resolution=72] the resolution of the raster in dpi
|
|
* @return {Raster} the newly created raster item
|
|
*
|
|
* @example {@paperscript}
|
|
* // Rasterizing an item:
|
|
* var circle = new Path.Circle({
|
|
* center: [50, 50],
|
|
* radius: 5,
|
|
* fillColor: 'red'
|
|
* });
|
|
*
|
|
* // Create a rasterized version of the path:
|
|
* var raster = circle.rasterize();
|
|
*
|
|
* // Move it 100pt to the right:
|
|
* raster.position.x += 100;
|
|
*
|
|
* // Scale the path and the raster by 300%, so we can compare them:
|
|
* circle.scale(5);
|
|
* raster.scale(5);
|
|
*/
|
|
rasterize: function(resolution) {
|
|
var bounds = this.getStrokeBounds(),
|
|
scale = (resolution || 72) / 72,
|
|
canvas = CanvasProvider.getCanvas(bounds.getSize().multiply(scale)),
|
|
ctx = canvas.getContext('2d'),
|
|
matrix = new Matrix().scale(scale).translate(-bounds.x, -bounds.y);
|
|
ctx.save();
|
|
matrix.applyToContext(ctx);
|
|
this.draw(ctx, { transforms: [matrix] });
|
|
var raster = new Raster(canvas);
|
|
raster.setBounds(bounds);
|
|
ctx.restore();
|
|
// NOTE: We don't need to release the canvas since it now belongs to the
|
|
// Raster!
|
|
return raster;
|
|
},
|
|
|
|
/**
|
|
* Checks wether the item's geometry contains the given point.
|
|
*
|
|
* @example {@paperscript} // Click within and outside the star below
|
|
* // Create a star shaped path:
|
|
* var path = new Path.Star({
|
|
* center: [50, 50],
|
|
* points: 12,
|
|
* radius1: 20,
|
|
* radius2: 40,
|
|
* fillColor: 'black'
|
|
* });
|
|
*
|
|
* // Whenever the user presses the mouse:
|
|
* function onMouseDown(event) {
|
|
* // If the position of the mouse is within the path,
|
|
* // set its fill color to red, otherwise set it to
|
|
* // black:
|
|
* if (path.contains(event.point)) {
|
|
* path.fillColor = 'red';
|
|
* } else {
|
|
* path.fillColor = 'black';
|
|
* }
|
|
* }
|
|
*
|
|
* @param {Point} point The point to check for.
|
|
*/
|
|
contains: function(point) {
|
|
// See CompoundPath#_contains() for the reason for !!
|
|
return !!this._contains(
|
|
this._matrix._inverseTransform(Point.read(arguments)));
|
|
},
|
|
|
|
_contains: function(point) {
|
|
if (this._children) {
|
|
for (var i = this._children.length - 1; i >= 0; i--) {
|
|
if (this._children[i].contains(point))
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
// We only implement it here for items with rectangular content,
|
|
// for anything else we need to override #contains()
|
|
return point.isInside(this._getBounds('getBounds'));
|
|
},
|
|
|
|
/**
|
|
* Perform a hit test on the item (and its children, if it is a
|
|
* {@link Group} or {@link Layer}) at the location of the specified point.
|
|
*
|
|
* The optional options object allows you to control the specifics of the
|
|
* hit test and may contain a combination of the following values:
|
|
* <b>tolerance:</b> {@code Number} - The tolerance of the hit test in
|
|
* points.
|
|
* <b>options.type:</b> Only hit test again a certain item
|
|
* type: {@link PathItem}, {@link Raster}, {@link TextItem}, etc.
|
|
* <b>options.fill:</b> {@code Boolean} - Hit test the fill of items.
|
|
* <b>options.stroke:</b> {@code Boolean} - Hit test the curves of path
|
|
* items, taking into account stroke width.
|
|
* <b>options.segment:</b> {@code Boolean} - Hit test for
|
|
* {@link Segment#point} of {@link Path} items.
|
|
* <b>options.handles:</b> {@code Boolean} - Hit test for the handles
|
|
* ({@link Segment#handleIn} / {@link Segment#handleOut}) of path segments.
|
|
* <b>options.ends:</b> {@code Boolean} - Only hit test for the first or
|
|
* last segment points of open path items.
|
|
* <b>options.bounds:</b> {@code Boolean} - Hit test the corners and
|
|
* side-centers of the bounding rectangle of items ({@link Item#bounds}).
|
|
* <b>options.center:</b> {@code Boolean} - Hit test the
|
|
* {@link Rectangle#center} of the bounding rectangle of items
|
|
* ({@link Item#bounds}).
|
|
* <b>options.guides:</b> {@code Boolean} - Hit test items that have
|
|
* {@link Item#guide} set to {@code true}.
|
|
* <b>options.selected:</b> {@code Boolean} - Only hit selected items.
|
|
*
|
|
* @param {Point} point The point where the hit test should be performed
|
|
* @param {Object} [options={ fill: true, stroke: true, segments: true,
|
|
* tolerance: 2 }]
|
|
* @return {HitResult} A hit result object that contains more
|
|
* information about what exactly was hit or {@code null} if nothing was
|
|
* hit.
|
|
*/
|
|
hitTest: function(point, options) {
|
|
function checkBounds(type, part) {
|
|
var pt = bounds['get' + part]();
|
|
// TODO: We need to transform the point back to the coordinate
|
|
// system of the DOM level on which the inquiry was started!
|
|
if (point.getDistance(pt) < options.tolerance)
|
|
return new HitResult(type, that,
|
|
{ name: Base.hyphenate(part), point: pt });
|
|
}
|
|
|
|
if (this._locked)
|
|
return null;
|
|
|
|
point = Point.read(arguments);
|
|
options = HitResult.getOptions(Base.read(arguments));
|
|
// Check if the point is withing roughBounds + tolerance, but only if
|
|
// this item does not have children, since we'd have to travel up the
|
|
// chain already to determine the rough bounds.
|
|
if (!this._children && !this.getRoughBounds()
|
|
.expand(options.tolerance)._containsPoint(point))
|
|
return null;
|
|
// Transform point to local coordinates but use untransformed point
|
|
// for bounds check above.
|
|
point = this._matrix._inverseTransform(point);
|
|
if ((options.center || options.bounds) &&
|
|
// Ignore top level layers:
|
|
!(this instanceof Layer && !this._parent)) {
|
|
// Don't get the transformed bounds, check against transformed
|
|
// points instead
|
|
var bounds = this.getBounds(),
|
|
that = this,
|
|
// TODO: Move these into a private scope
|
|
points = ['TopLeft', 'TopRight', 'BottomLeft', 'BottomRight',
|
|
'LeftCenter', 'TopCenter', 'RightCenter', 'BottomCenter'],
|
|
res;
|
|
if (options.center && (res = checkBounds('center', 'Center')))
|
|
return res;
|
|
if (options.bounds) {
|
|
for (var i = 0; i < 8; i++)
|
|
if (res = checkBounds('bounds', points[i]))
|
|
return res;
|
|
}
|
|
}
|
|
|
|
// TODO: Support option.type even for things like CompoundPath where
|
|
// children are matched but the parent is returned.
|
|
|
|
// Filter for guides or selected items if that's required
|
|
return this._children || !(options.guides && !this._guide
|
|
|| options.selected && !this._selected)
|
|
? this._hitTest(point, options) : null;
|
|
},
|
|
|
|
_hitTest: function(point, options) {
|
|
if (this._children) {
|
|
// Loop backwards, so items that get drawn last are tested first
|
|
for (var i = this._children.length - 1; i >= 0; i--) {
|
|
var res = this._children[i].hitTest(point, options);
|
|
if (res) return res;
|
|
}
|
|
}
|
|
},
|
|
|
|
/**
|
|
* {@grouptitle Hierarchy Operations}
|
|
* Adds the specified item as a child of this item at the end of the
|
|
* its children list. You can use this function for groups, compound
|
|
* paths and layers.
|
|
*
|
|
* @param {Item} item The item to be added as a child
|
|
*/
|
|
addChild: function(item, _preserve) {
|
|
// Pass on internal _preserve boolean, for CompoundPath#insertChild
|
|
return this.insertChild(undefined, item, _preserve);
|
|
},
|
|
|
|
/**
|
|
* Inserts the specified item as a child of this item at the specified
|
|
* index in its {@link #children} list. You can use this function for
|
|
* groups, compound paths and layers.
|
|
*
|
|
* @param {Number} index
|
|
* @param {Item} item The item to be appended as a child
|
|
*/
|
|
insertChild: function(index, item, _preserve) {
|
|
// _preserve parameter is not used here, but CompoundPath#insertChild()
|
|
// needs it.
|
|
if (this._children) {
|
|
item._remove(true);
|
|
Base.splice(this._children, [item], index, 0);
|
|
item._parent = this;
|
|
item._setProject(this._project);
|
|
// Setting the name again makes sure all name lookup structures are
|
|
// kept in sync.
|
|
if (item._name)
|
|
item.setName(item._name);
|
|
this._changed(/*#=*/ Change.HIERARCHY);
|
|
return item;
|
|
}
|
|
return null;
|
|
},
|
|
|
|
/**
|
|
* Adds the specified items as children of this item at the end of the
|
|
* its children list. You can use this function for groups, compound
|
|
* paths and layers.
|
|
*
|
|
* @param {Item[]} items The items to be added as children
|
|
*/
|
|
addChildren: function(items, _preserve) {
|
|
return this.insertChildren(this._children.length, items, _preserve);
|
|
},
|
|
|
|
/**
|
|
* Inserts the specified items as children of this item at the specified
|
|
* index in its {@link #children} list. You can use this function for
|
|
* groups, compound paths and layers.
|
|
*
|
|
* @param {Number} index
|
|
* @param {Item[]} items The items to be appended as children
|
|
*/
|
|
insertChildren: function(index, items, _preserve) {
|
|
// We need to clone items because it might be
|
|
// an Item#children array. Use Array.prototype.slice because
|
|
// in certain cases items is an arguments object
|
|
items = items && Array.prototype.slice.apply(items);
|
|
var children = this._children,
|
|
length = children.length,
|
|
i = index;
|
|
for (var j = 0, l = items && items.length; j < l; j++) {
|
|
if (this.insertChild(i, items[j], _preserve)) {
|
|
// We need to keep track of how much the list actually grows,
|
|
// bcause we might be removing and inserting into the same list,
|
|
// in which case the size would not chage.
|
|
var newLength = children.length;
|
|
i += newLength - length;
|
|
length = newLength;
|
|
}
|
|
}
|
|
return i != index;
|
|
},
|
|
|
|
/**
|
|
* Inserts this item above the specified item.
|
|
*
|
|
* @param {Item} item The item above which it should be inserted
|
|
* @return {Boolean} {@true it was inserted}
|
|
*/
|
|
insertAbove: function(item, _preserve) {
|
|
var index = item._index;
|
|
if (item._parent == this._parent && index < this._index)
|
|
index++;
|
|
return item._parent.insertChild(index, this, _preserve);
|
|
},
|
|
|
|
/**
|
|
* Inserts this item below the specified item.
|
|
*
|
|
* @param {Item} item The item above which it should be inserted
|
|
* @return {Boolean} {@true it was inserted}
|
|
*/
|
|
insertBelow: function(item, _preserve) {
|
|
var index = item._index;
|
|
if (item._parent == this._parent && index > this._index)
|
|
index--;
|
|
return item._parent.insertChild(index, this, _preserve);
|
|
},
|
|
|
|
/**
|
|
* Sends this item to the back of all other items within the same parent.
|
|
*/
|
|
sendToBack: function() {
|
|
return this._parent.insertChild(0, this);
|
|
},
|
|
|
|
/**
|
|
* Brings this item to the front of all other items within the same parent.
|
|
*/
|
|
bringToFront: function() {
|
|
return this._parent.addChild(this);
|
|
},
|
|
|
|
/**
|
|
* Inserts the specified item as a child of this item by appending it to
|
|
* the list of children and moving it above all other children. You can
|
|
* use this function for groups, compound paths and layers.
|
|
*
|
|
* @param {Item} item The item to be appended as a child
|
|
* @deprecated use {@link #addChild(item)} instead.
|
|
*/
|
|
appendTop: '#addChild',
|
|
|
|
/**
|
|
* Inserts the specified item as a child of this item by appending it to
|
|
* the list of children and moving it below all other children. You can
|
|
* use this function for groups, compound paths and layers.
|
|
*
|
|
* @param {Item} item The item to be appended as a child
|
|
* @deprecated use {@link #insertChild(index, item)} instead.
|
|
*/
|
|
appendBottom: function(item) {
|
|
return this.insertChild(0, item);
|
|
},
|
|
|
|
/**
|
|
* Moves this item above the specified item.
|
|
*
|
|
* @param {Item} item The item above which it should be moved
|
|
* @return {Boolean} {@true it was moved}
|
|
* @deprecated use {@link #insertAbove(item)} instead.
|
|
*/
|
|
moveAbove: '#insertAbove',
|
|
|
|
/**
|
|
* Moves the item below the specified item.
|
|
*
|
|
* @param {Item} item the item below which it should be moved
|
|
* @return {Boolean} {@true it was moved}
|
|
* @deprecated use {@link #insertBelow(item)} instead.
|
|
*/
|
|
moveBelow: '#insertBelow',
|
|
|
|
/**
|
|
* Removes the item from its parent's named children list.
|
|
*/
|
|
_removeFromNamed: function() {
|
|
var children = this._parent._children,
|
|
namedChildren = this._parent._namedChildren,
|
|
name = this._name,
|
|
namedArray = namedChildren[name],
|
|
index = namedArray ? namedArray.indexOf(this) : -1;
|
|
if (index == -1)
|
|
return;
|
|
// Remove the named reference
|
|
if (children[name] == this)
|
|
delete children[name];
|
|
// Remove this entry
|
|
namedArray.splice(index, 1);
|
|
// If there are any items left in the named array, set
|
|
// the last of them to be this.parent.children[this.name]
|
|
if (namedArray.length) {
|
|
children[name] = namedArray[namedArray.length - 1];
|
|
} else {
|
|
// Otherwise delete the empty array
|
|
delete namedChildren[name];
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Removes the item from its parent's children list.
|
|
*/
|
|
_remove: function(notify) {
|
|
if (this._parent) {
|
|
if (this._name)
|
|
this._removeFromNamed();
|
|
if (this._index != null)
|
|
Base.splice(this._parent._children, null, this._index, 1);
|
|
// Notify parent of changed hierarchy
|
|
if (notify)
|
|
this._parent._changed(/*#=*/ Change.HIERARCHY);
|
|
this._parent = null;
|
|
return true;
|
|
}
|
|
return false;
|
|
},
|
|
|
|
/**
|
|
* Removes the item from the project. If the item has children, they are also
|
|
* removed.
|
|
*
|
|
* @return {Boolean} {@true the item was removed}
|
|
*/
|
|
remove: function() {
|
|
return this._remove(true);
|
|
},
|
|
|
|
/**
|
|
* Removes all of the item's {@link #children} (if any).
|
|
*
|
|
* @name Item#removeChildren
|
|
* @function
|
|
* @return {Item[]} an array containing the removed items
|
|
*/
|
|
/**
|
|
* Removes the children from the specified {@code from} index to the
|
|
* {@code to} index from the parent's {@link #children} array.
|
|
*
|
|
* @name Item#removeChildren
|
|
* @function
|
|
* @param {Number} from the beginning index, inclusive
|
|
* @param {Number} [to=children.length] the ending index, exclusive
|
|
* @return {Item[]} an array containing the removed items
|
|
*/
|
|
removeChildren: function(from, to) {
|
|
if (!this._children)
|
|
return null;
|
|
from = from || 0;
|
|
to = Base.pick(to, this._children.length);
|
|
// Use Base.splice(), wich adjusts #_index for the items above, and
|
|
// deletes it for the removed items. Calling #_remove() afterwards is
|
|
// fine, since it only calls Base.splice() if #_index is set.
|
|
var removed = Base.splice(this._children, null, from, to - from);
|
|
for (var i = removed.length - 1; i >= 0; i--)
|
|
removed[i]._remove(false);
|
|
if (removed.length > 0)
|
|
this._changed(/*#=*/ Change.HIERARCHY);
|
|
return removed;
|
|
},
|
|
|
|
/**
|
|
* Reverses the order of the item's children
|
|
*/
|
|
reverseChildren: function() {
|
|
if (this._children) {
|
|
this._children.reverse();
|
|
// Adjust inidces
|
|
for (var i = 0, l = this._children.length; i < l; i++)
|
|
this._children[i]._index = i;
|
|
this._changed(/*#=*/ Change.HIERARCHY);
|
|
}
|
|
},
|
|
|
|
// TODO: Item#isEditable is currently ignored in the documentation, as
|
|
// locking an item currently has no effect
|
|
/**
|
|
* {@grouptitle Tests}
|
|
* Checks whether the item is editable.
|
|
*
|
|
* @return {Boolean} {@true when neither the item, nor its parents are
|
|
* locked or hidden}
|
|
* @ignore
|
|
*/
|
|
isEditable: function() {
|
|
var item = this;
|
|
while (item) {
|
|
if (!item._visible || item._locked)
|
|
return false;
|
|
item = item._parent;
|
|
}
|
|
return true;
|
|
},
|
|
|
|
/**
|
|
* Checks whether the item is valid, i.e. it hasn't been removed.
|
|
*
|
|
* @return {Boolean} {@true the item is valid}
|
|
*/
|
|
// TODO: isValid / checkValid
|
|
|
|
/**
|
|
* Returns -1 if 'this' is above 'item', 1 if below, 0 if their order is not
|
|
* defined in such a way, e.g. if one is a descendant of the other.
|
|
*/
|
|
_getOrder: function(item) {
|
|
// Private method that produces a list of anchestors, starting with the
|
|
// root and ending with the actual element as the last entry.
|
|
function getList(item) {
|
|
var list = [];
|
|
do {
|
|
list.unshift(item);
|
|
} while (item = item._parent);
|
|
return list;
|
|
}
|
|
var list1 = getList(this),
|
|
list2 = getList(item);
|
|
for (var i = 0, l = Math.min(list1.length, list2.length); i < l; i++) {
|
|
if (list1[i] != list2[i]) {
|
|
// Found the position in the parents list where the two start
|
|
// to differ. Look at who's above who.
|
|
return list1[i]._index < list2[i]._index ? 1 : -1;
|
|
}
|
|
}
|
|
return 0;
|
|
},
|
|
|
|
/**
|
|
* {@grouptitle Hierarchy Tests}
|
|
*
|
|
* Checks if the item contains any children items.
|
|
*
|
|
* @return {Boolean} {@true it has one or more children}
|
|
*/
|
|
hasChildren: function() {
|
|
return this._children && this._children.length > 0;
|
|
},
|
|
|
|
/**
|
|
* Checks if this item is above the specified item in the stacking order
|
|
* of the project.
|
|
*
|
|
* @param {Item} item The item to check against
|
|
* @return {Boolean} {@true if it is above the specified item}
|
|
*/
|
|
isAbove: function(item) {
|
|
return this._getOrder(item) == -1;
|
|
},
|
|
|
|
/**
|
|
* Checks if the item is below the specified item in the stacking order of
|
|
* the project.
|
|
*
|
|
* @param {Item} item The item to check against
|
|
* @return {Boolean} {@true if it is below the specified item}
|
|
*/
|
|
isBelow: function(item) {
|
|
return this._getOrder(item) == 1;
|
|
},
|
|
|
|
/**
|
|
* Checks whether the specified item is the parent of the item.
|
|
*
|
|
* @param {Item} item The item to check against
|
|
* @return {Boolean} {@true if it is the parent of the item}
|
|
*/
|
|
isParent: function(item) {
|
|
return this._parent == item;
|
|
},
|
|
|
|
/**
|
|
* Checks whether the specified item is a child of the item.
|
|
*
|
|
* @param {Item} item The item to check against
|
|
* @return {Boolean} {@true it is a child of the item}
|
|
*/
|
|
isChild: function(item) {
|
|
return item && item._parent == this;
|
|
},
|
|
|
|
/**
|
|
* Checks if the item is contained within the specified item.
|
|
*
|
|
* @param {Item} item The item to check against
|
|
* @return {Boolean} {@true if it is inside the specified item}
|
|
*/
|
|
isDescendant: function(item) {
|
|
var parent = this;
|
|
while (parent = parent._parent) {
|
|
if (parent == item)
|
|
return true;
|
|
}
|
|
return false;
|
|
},
|
|
|
|
/**
|
|
* Checks if the item is an ancestor of the specified item.
|
|
*
|
|
* @param {Item} item the item to check against
|
|
* @return {Boolean} {@true if the item is an ancestor of the specified
|
|
* item}
|
|
*/
|
|
isAncestor: function(item) {
|
|
return item ? item.isDescendant(this) : false;
|
|
},
|
|
|
|
/**
|
|
* Checks whether the item is grouped with the specified item.
|
|
*
|
|
* @param {Item} item
|
|
* @return {Boolean} {@true if the items are grouped together}
|
|
*/
|
|
isGroupedWith: function(item) {
|
|
var parent = this._parent;
|
|
while (parent) {
|
|
// Find group parents. Check for parent._parent, since don't want
|
|
// top level layers, because they also inherit from Group
|
|
if (parent._parent
|
|
&& /^(group|layer|compound-path)$/.test(parent._type)
|
|
&& item.isDescendant(parent))
|
|
return true;
|
|
// Keep walking up otherwise
|
|
parent = parent._parent;
|
|
}
|
|
return false;
|
|
},
|
|
|
|
// Document all style properties which get injected into Item by Style:
|
|
|
|
/**
|
|
* {@grouptitle Stroke Style}
|
|
*
|
|
* The color of the stroke.
|
|
*
|
|
* @name Item#strokeColor
|
|
* @property
|
|
* @type Color
|
|
*
|
|
* @example {@paperscript}
|
|
* // Setting the stroke color of a path:
|
|
*
|
|
* // Create a circle shaped path at { x: 80, y: 50 }
|
|
* // with a radius of 35:
|
|
* var circle = new Path.Circle({
|
|
* center: [80, 50],
|
|
* radius: 35
|
|
* });
|
|
*
|
|
* // Set its stroke color to RGB red:
|
|
* circle.strokeColor = new Color(1, 0, 0);
|
|
*/
|
|
|
|
/**
|
|
* The width of the stroke.
|
|
*
|
|
* @name Item#strokeWidth
|
|
* @property
|
|
* @type Number
|
|
*
|
|
* @example {@paperscript}
|
|
* // Setting an item's stroke width:
|
|
*
|
|
* // Create a circle shaped path at { x: 80, y: 50 }
|
|
* // with a radius of 35:
|
|
* var circle = new Path.Circle({
|
|
* center: [80, 50],
|
|
* radius: 35,
|
|
* strokeColor: 'red'
|
|
* });
|
|
*
|
|
* // Set its stroke width to 10:
|
|
* circle.strokeWidth = 10;
|
|
*/
|
|
|
|
/**
|
|
* The shape to be used at the end of open {@link Path} items, when they
|
|
* have a stroke.
|
|
*
|
|
* @name Item#strokeCap
|
|
* @property
|
|
* @default 'butt'
|
|
* @type String('round', 'square', 'butt')
|
|
*
|
|
* @example {@paperscript height=200}
|
|
* // A look at the different stroke caps:
|
|
*
|
|
* var line = new Path({
|
|
* segments: [[80, 50], [420, 50]],
|
|
* strokeColor: 'black',
|
|
* strokeWidth: 20,
|
|
* selected: true
|
|
* });
|
|
*
|
|
* // Set the stroke cap of the line to be round:
|
|
* line.strokeCap = 'round';
|
|
*
|
|
* // Copy the path and set its stroke cap to be square:
|
|
* var line2 = line.clone();
|
|
* line2.position.y += 50;
|
|
* line2.strokeCap = 'square';
|
|
*
|
|
* // Make another copy and set its stroke cap to be butt:
|
|
* var line2 = line.clone();
|
|
* line2.position.y += 100;
|
|
* line2.strokeCap = 'butt';
|
|
*/
|
|
|
|
/**
|
|
* The shape to be used at the corners of paths when they have a stroke.
|
|
*
|
|
* @name Item#strokeJoin
|
|
* @property
|
|
* @default 'miter'
|
|
* @type String('miter', 'round', 'bevel')
|
|
*
|
|
*
|
|
* @example {@paperscript height=120}
|
|
* // A look at the different stroke joins:
|
|
* var path = new Path({
|
|
* segments: [[80, 100], [120, 40], [160, 100]],
|
|
* strokeColor: 'black',
|
|
* strokeWidth: 20,
|
|
* // Select the path, in order to see where the stroke is formed:
|
|
* selected: true
|
|
* });
|
|
*
|
|
* var path2 = path.clone();
|
|
* path2.position.x += path2.bounds.width * 1.5;
|
|
* path2.strokeJoin = 'round';
|
|
*
|
|
* var path3 = path2.clone();
|
|
* path3.position.x += path3.bounds.width * 1.5;
|
|
* path3.strokeJoin = 'bevel';
|
|
*/
|
|
|
|
/**
|
|
* The dash offset of the stroke.
|
|
*
|
|
* @name Item#dashOffset
|
|
* @property
|
|
* @default 0
|
|
* @type Number
|
|
*/
|
|
|
|
/**
|
|
* Specifies an array containing the dash and gap lengths of the stroke.
|
|
*
|
|
* @example {@paperscript}
|
|
* var path = new Path.Circle({
|
|
* center: [80, 50],
|
|
* radius: 40,
|
|
* strokeWidth: 2,
|
|
* strokeColor: 'black'
|
|
* });
|
|
*
|
|
* // Set the dashed stroke to [10pt dash, 4pt gap]:
|
|
* path.dashArray = [10, 4];
|
|
*
|
|
* @name Item#dashArray
|
|
* @property
|
|
* @default []
|
|
* @type Array
|
|
*/
|
|
|
|
/**
|
|
* The miter limit of the stroke.
|
|
* When two line segments meet at a sharp angle and miter joins have been
|
|
* specified for {@link Item#strokeJoin}, it is possible for the miter to
|
|
* extend far beyond the {@link Item#strokeWidth} of the path. The
|
|
* miterLimit imposes a limit on the ratio of the miter length to the
|
|
* {@link Item#strokeWidth}.
|
|
*
|
|
* @default 10
|
|
* @property
|
|
* @name Item#miterLimit
|
|
* @type Number
|
|
*/
|
|
|
|
/**
|
|
* {@grouptitle Fill Style}
|
|
*
|
|
* The fill color of the item.
|
|
*
|
|
* @name Item#fillColor
|
|
* @property
|
|
* @type Color
|
|
*
|
|
* @example {@paperscript}
|
|
* // Setting the fill color of a path to red:
|
|
*
|
|
* // Create a circle shaped path at { x: 80, y: 50 }
|
|
* // with a radius of 35:
|
|
* var circle = new Path.Circle({
|
|
* center: [80, 50],
|
|
* radius: 35
|
|
* });
|
|
*
|
|
* // Set the fill color of the circle to RGB red:
|
|
* circle.fillColor = new Color(1, 0, 0);
|
|
*/
|
|
|
|
// DOCS: Document the different arguments that this function can receive.
|
|
/**
|
|
* {@grouptitle Transform Functions}
|
|
*
|
|
* Scales the item by the given value from its center point, or optionally
|
|
* from a supplied point.
|
|
*
|
|
* @name Item#scale
|
|
* @function
|
|
* @param {Number} scale the scale factor
|
|
* @param {Point} [center={@link Item#position}]
|
|
*
|
|
* @example {@paperscript}
|
|
* // Scaling an item from its center point:
|
|
*
|
|
* // Create a circle shaped path at { x: 80, y: 50 }
|
|
* // with a radius of 20:
|
|
* var circle = new Path.Circle({
|
|
* center: [80, 50],
|
|
* radius: 20,
|
|
* fillColor: 'red'
|
|
* });
|
|
*
|
|
* // Scale the path by 150% from its center point
|
|
* circle.scale(1.5);
|
|
*
|
|
* @example {@paperscript}
|
|
* // Scaling an item from a specific point:
|
|
*
|
|
* // Create a circle shaped path at { x: 80, y: 50 }
|
|
* // with a radius of 20:
|
|
* var circle = new Path.Circle({
|
|
* center: [80, 50],
|
|
* radius: 20,
|
|
* fillColor: 'red'
|
|
* });
|
|
*
|
|
* // Scale the path 150% from its bottom left corner
|
|
* circle.scale(1.5, circle.bounds.bottomLeft);
|
|
*/
|
|
/**
|
|
* Scales the item by the given values from its center point, or optionally
|
|
* from a supplied point.
|
|
*
|
|
* @name Item#scale
|
|
* @function
|
|
* @param {Number} hor the horizontal scale factor
|
|
* @param {Number} ver the vertical scale factor
|
|
* @param {Point} [center={@link Item#position}]
|
|
*
|
|
* @example {@paperscript}
|
|
* // Scaling an item horizontally by 300%:
|
|
*
|
|
* // Create a circle shaped path at { x: 100, y: 50 }
|
|
* // with a radius of 20:
|
|
* var circle = new Path.Circle({
|
|
* center: [100, 50],
|
|
* radius: 20,
|
|
* fillColor: 'red'
|
|
* });
|
|
*
|
|
* // Scale the path horizontally by 300%
|
|
* circle.scale(3, 1);
|
|
*/
|
|
scale: function(hor, ver /* | scale */, center) {
|
|
// See Matrix#scale for explanation of this:
|
|
if (arguments.length < 2 || typeof ver === 'object') {
|
|
center = ver;
|
|
ver = hor;
|
|
}
|
|
return this.transform(new Matrix().scale(hor, ver,
|
|
center || this.getPosition(true)));
|
|
},
|
|
|
|
/**
|
|
* Translates (moves) the item by the given offset point.
|
|
*
|
|
* @param {Point} delta the offset to translate the item by
|
|
*/
|
|
translate: function(delta) {
|
|
var mx = new Matrix();
|
|
return this.transform(mx.translate.apply(mx, arguments));
|
|
},
|
|
|
|
/**
|
|
* Rotates the item by a given angle around the given point.
|
|
*
|
|
* Angles are oriented clockwise and measured in degrees.
|
|
*
|
|
* @param {Number} angle the rotation angle
|
|
* @param {Point} [center={@link Item#position}]
|
|
* @see Matrix#rotate
|
|
*
|
|
* @example {@paperscript}
|
|
* // Rotating an item:
|
|
*
|
|
* // Create a rectangle shaped path with its top left
|
|
* // point at {x: 80, y: 25} and a size of {width: 50, height: 50}:
|
|
* var path = new Path.Rectangle(new Point(80, 25), new Size(50, 50));
|
|
* path.fillColor = 'black';
|
|
*
|
|
* // Rotate the path by 30 degrees:
|
|
* path.rotate(30);
|
|
*
|
|
* @example {@paperscript height=200}
|
|
* // Rotating an item around a specific point:
|
|
*
|
|
* // Create a rectangle shaped path with its top left
|
|
* // point at {x: 175, y: 50} and a size of {width: 100, height: 100}:
|
|
* var topLeft = new Point(175, 50);
|
|
* var size = new Size(100, 100);
|
|
* var path = new Path.Rectangle(topLeft, size);
|
|
* path.fillColor = 'black';
|
|
*
|
|
* // Draw a circle shaped path in the center of the view,
|
|
* // to show the rotation point:
|
|
* var circle = new Path.Circle({
|
|
* center: view.center,
|
|
* radius: 5,
|
|
* fillColor: 'white'
|
|
* });
|
|
*
|
|
* // Each frame rotate the path 3 degrees around the center point
|
|
* // of the view:
|
|
* function onFrame(event) {
|
|
* path.rotate(3, view.center);
|
|
* }
|
|
*/
|
|
rotate: function(angle, center) {
|
|
return this.transform(new Matrix().rotate(angle,
|
|
center || this.getPosition(true)));
|
|
},
|
|
|
|
// TODO: Add test for item shearing, as it might be behaving oddly.
|
|
/**
|
|
* Shears the item by the given value from its center point, or optionally
|
|
* by a supplied point.
|
|
*
|
|
* @name Item#shear
|
|
* @function
|
|
* @param {Point} point
|
|
* @param {Point} [center={@link Item#position}]
|
|
* @see Matrix#shear
|
|
*/
|
|
/**
|
|
* Shears the item by the given values from its center point, or optionally
|
|
* by a supplied point.
|
|
*
|
|
* @name Item#shear
|
|
* @function
|
|
* @param {Number} hor the horizontal shear factor.
|
|
* @param {Number} ver the vertical shear factor.
|
|
* @param {Point} [center={@link Item#position}]
|
|
* @see Matrix#shear
|
|
*/
|
|
shear: function(hor, ver, center) {
|
|
// See Matrix#scale for explanation of this:
|
|
if (arguments.length < 2 || typeof ver === 'object') {
|
|
center = ver;
|
|
ver = hor;
|
|
}
|
|
return this.transform(new Matrix().shear(hor, ver,
|
|
center || this.getPosition(true)));
|
|
},
|
|
|
|
/**
|
|
* Transform the item.
|
|
*
|
|
* @param {Matrix} matrix the matrix by which the item shall be transformed.
|
|
*/
|
|
// Remove this for now:
|
|
// @param {String[]} flags Array of any of the following: 'objects',
|
|
// 'children', 'fill-gradients', 'fill-patterns', 'stroke-patterns',
|
|
// 'lines'. Default: ['objects', 'children']
|
|
transform: function(matrix /*, applyMatrix */) {
|
|
// Calling _changed will clear _bounds and _position, but depending
|
|
// on matrix we can calculate and set them again.
|
|
var bounds = this._bounds,
|
|
position = this._position;
|
|
// Simply preconcatenate the internal matrix with the passed one:
|
|
this._matrix.preConcatenate(matrix);
|
|
// Call applyMatrix if we need to directly apply the accumulated
|
|
// transformations to the item's content.
|
|
if (this._applyMatrix || arguments[1])
|
|
this.applyMatrix(false);
|
|
// We always need to call _changed since we're caching bounds on all
|
|
// items, including Group.
|
|
this._changed(/*#=*/ Change.GEOMETRY);
|
|
// Detect matrices that contain only translations and scaling
|
|
// and transform the cached _bounds and _position without having to
|
|
// fully recalculate each time.
|
|
if (bounds && matrix.getRotation() % 90 === 0) {
|
|
// Transform the old bound by looping through all the cached bounds
|
|
// in _bounds and transform each.
|
|
for (var key in bounds) {
|
|
var rect = bounds[key];
|
|
matrix._transformBounds(rect, rect);
|
|
}
|
|
// If we have cached bounds, update _position again as its
|
|
// center. We need to take into account _boundsGetter here too, in
|
|
// case another getter is assigned to it, e.g. 'getStrokeBounds'.
|
|
var getter = this._boundsGetter,
|
|
rect = bounds[getter && getter.getBounds || getter || 'getBounds'];
|
|
if (rect)
|
|
this._position = rect.getCenter(true);
|
|
this._bounds = bounds;
|
|
} else if (position) {
|
|
// Transform position as well.
|
|
this._position = matrix._transformPoint(position, position);
|
|
}
|
|
// Allow chaining here, since transform() is related to Matrix functions
|
|
return this;
|
|
},
|
|
|
|
_transformContent: function(matrix, applyMatrix) {
|
|
if (this._children) {
|
|
for (var i = 0, l = this._children.length; i < l; i++)
|
|
this._children[i].transform(matrix, applyMatrix);
|
|
return true;
|
|
}
|
|
},
|
|
|
|
applyMatrix: function(_dontNotify) {
|
|
// Call #_transformContent() with the internal _matrix and pass true for
|
|
// applyMatrix. Application is not possible on Raster, PointText,
|
|
// PlacedSymbol, since the matrix is where the actual location /
|
|
// transformation state is stored.
|
|
// Pass on the transformation to the content, and apply it there too,
|
|
// by passing true for the 2nd hidden parameter.
|
|
var matrix = this._matrix;
|
|
if (this._transformContent(matrix, true)) {
|
|
// When the matrix could be applied, we also need to transform
|
|
// color styles with matrices (only gradients so far):
|
|
var style = this._style,
|
|
// pass true for dontMerge so we don't recursively transform
|
|
// styles on groups' children.
|
|
fillColor = style.getFillColor(true),
|
|
strokeColor = style.getStrokeColor(true);
|
|
if (fillColor)
|
|
fillColor.transform(matrix);
|
|
if (strokeColor)
|
|
strokeColor.transform(matrix);
|
|
// Reset the internal matrix to the identity transformation if it
|
|
// was possible to apply it.
|
|
matrix.reset();
|
|
}
|
|
if (!_dontNotify)
|
|
this._changed(/*#=*/ Change.GEOMETRY);
|
|
},
|
|
|
|
/**
|
|
* Transform the item so that its {@link #bounds} fit within the specified
|
|
* rectangle, without changing its aspect ratio.
|
|
*
|
|
* @param {Rectangle} rectangle
|
|
* @param {Boolean} [fill=false]
|
|
*
|
|
* @example {@paperscript height=100}
|
|
* // Fitting an item to the bounding rectangle of another item's bounding
|
|
* // rectangle:
|
|
*
|
|
* // Create a rectangle shaped path with its top left corner
|
|
* // at {x: 80, y: 25} and a size of {width: 75, height: 50}:
|
|
* var path = new Path.Rectangle({
|
|
* point: [80, 25],
|
|
* size: [75, 50],
|
|
* fillColor: 'black'
|
|
* });
|
|
*
|
|
* // Create a circle shaped path with its center at {x: 80, y: 50}
|
|
* // and a radius of 30.
|
|
* var circlePath = new Path.Circle({
|
|
* center: [80, 50],
|
|
* radius: 30,
|
|
* fillColor: 'red'
|
|
* });
|
|
*
|
|
* // Fit the circlePath to the bounding rectangle of
|
|
* // the rectangular path:
|
|
* circlePath.fitBounds(path.bounds);
|
|
*
|
|
* @example {@paperscript height=100}
|
|
* // Fitting an item to the bounding rectangle of another item's bounding
|
|
* // rectangle with the fill parameter set to true:
|
|
*
|
|
* // Create a rectangle shaped path with its top left corner
|
|
* // at {x: 80, y: 25} and a size of {width: 75, height: 50}:
|
|
* var path = new Path.Rectangle({
|
|
* point: [80, 25],
|
|
* size: [75, 50],
|
|
* fillColor: 'black'
|
|
* });
|
|
*
|
|
* // Create a circle shaped path with its center at {x: 80, y: 50}
|
|
* // and a radius of 30.
|
|
* var circlePath = new Path.Circle({
|
|
* center: [80, 50],
|
|
* radius: 30,
|
|
* fillColor: 'red'
|
|
* });
|
|
*
|
|
* // Fit the circlePath to the bounding rectangle of
|
|
* // the rectangular path:
|
|
* circlePath.fitBounds(path.bounds, true);
|
|
*
|
|
* @example {@paperscript height=200}
|
|
* // Fitting an item to the bounding rectangle of the view
|
|
* var path = new Path.Circle({
|
|
* center: [80, 50],
|
|
* radius: 30,
|
|
* fillColor: 'red'
|
|
* });
|
|
*
|
|
* // Fit the path to the bounding rectangle of the view:
|
|
* path.fitBounds(view.bounds);
|
|
*/
|
|
fitBounds: function(rectangle, fill) {
|
|
// TODO: Think about passing options with various ways of defining
|
|
// fitting.
|
|
rectangle = Rectangle.read(arguments);
|
|
var bounds = this.getBounds(),
|
|
itemRatio = bounds.height / bounds.width,
|
|
rectRatio = rectangle.height / rectangle.width,
|
|
scale = (fill ? itemRatio > rectRatio : itemRatio < rectRatio)
|
|
? rectangle.width / bounds.width
|
|
: rectangle.height / bounds.height,
|
|
newBounds = new Rectangle(new Point(),
|
|
Size.create(bounds.width * scale, bounds.height * scale));
|
|
newBounds.setCenter(rectangle.getCenter());
|
|
this.setBounds(newBounds);
|
|
},
|
|
|
|
// DOCS: document exportJSON (documented in @private Base)
|
|
// DOCS: document importJSON
|
|
// DOCS: Figure out a way to group these together with importSVG / exportSVG
|
|
|
|
importJSON: function(json) {
|
|
return this.addChild(Base.importJSON(json));
|
|
},
|
|
|
|
/**
|
|
* {@grouptitle Event Handlers}
|
|
* Item level handler function to be called on each frame of an animation.
|
|
* The function receives an event object which contains information about
|
|
* the frame event:
|
|
*
|
|
* <b>{@code event.count}</b>: the number of times the frame event was
|
|
* fired.
|
|
* <b>{@code event.time}</b>: the total amount of time passed since the
|
|
* first frame event in seconds.
|
|
* <b>{@code event.delta}</b>: the time passed in seconds since the last
|
|
* frame event.
|
|
*
|
|
* @see View#onFrame
|
|
* @example {@paperscript}
|
|
* // Creating an animation:
|
|
*
|
|
* // Create a rectangle shaped path with its top left point at:
|
|
* // {x: 50, y: 25} and a size of {width: 50, height: 50}
|
|
* var path = new Path.Rectangle(new Point(50, 25), new Size(50, 50));
|
|
* path.fillColor = 'black';
|
|
*
|
|
* path.onFrame = function(event) {
|
|
* // Every frame, rotate the path by 3 degrees:
|
|
* this.rotate(3);
|
|
* }
|
|
*
|
|
* @name Item#onFrame
|
|
* @property
|
|
* @type Function
|
|
*/
|
|
|
|
/**
|
|
* The function to be called when the mouse button is pushed down on the
|
|
* item. The function receives a {@link MouseEvent} object which contains
|
|
* information about the mouse event.
|
|
*
|
|
* @name Item#onMouseDown
|
|
* @property
|
|
* @type Function
|
|
*
|
|
* @example {@paperscript}
|
|
* // Press the mouse button down on the circle shaped path, to make it red:
|
|
*
|
|
* // Create a circle shaped path at the center of the view:
|
|
* var path = new Path.Circle({
|
|
* center: view.center,
|
|
* radius: 25,
|
|
* fillColor: 'black'
|
|
* });
|
|
*
|
|
* // When the mouse is pressed on the item,
|
|
* // set its fill color to red:
|
|
* path.onMouseDown = function(event) {
|
|
* this.fillColor = 'red';
|
|
* }
|
|
*
|
|
* @example {@paperscript}
|
|
* // Press the mouse on the circle shaped paths to remove them:
|
|
*
|
|
* // Loop 30 times:
|
|
* for (var i = 0; i < 30; i++) {
|
|
* // Create a circle shaped path at a random position
|
|
* // in the view:
|
|
* var path = new Path.Circle({
|
|
* center: Point.random() * view.size,
|
|
* radius: 25,
|
|
* fillColor: 'black',
|
|
* strokeColor: 'white'
|
|
* });
|
|
*
|
|
* // When the mouse is pressed on the item, remove it:
|
|
* path.onMouseDown = function(event) {
|
|
* this.remove();
|
|
* }
|
|
* }
|
|
*/
|
|
|
|
/**
|
|
* The function to be called when the mouse button is released over the item.
|
|
* The function receives a {@link MouseEvent} object which contains
|
|
* information about the mouse event.
|
|
*
|
|
* @name Item#onMouseUp
|
|
* @property
|
|
* @type Function
|
|
*
|
|
* @example {@paperscript}
|
|
* // Release the mouse button over the circle shaped path, to make it red:
|
|
*
|
|
* // Create a circle shaped path at the center of the view:
|
|
* var path = new Path.Circle({
|
|
* center: view.center,
|
|
* radius: 25,
|
|
* fillColor: 'black'
|
|
* });
|
|
*
|
|
* // When the mouse is released over the item,
|
|
* // set its fill color to red:
|
|
* path.onMouseUp = function(event) {
|
|
* this.fillColor = 'red';
|
|
* }
|
|
*/
|
|
|
|
/**
|
|
* The function to be called when the mouse clicks on the item. The function
|
|
* receives a {@link MouseEvent} object which contains information about the
|
|
* mouse event.
|
|
*
|
|
* @name Item#onClick
|
|
* @property
|
|
* @type Function
|
|
*
|
|
* @example {@paperscript}
|
|
* // Click on the circle shaped path, to make it red:
|
|
*
|
|
* // Create a circle shaped path at the center of the view:
|
|
* var path = new Path.Circle({
|
|
* center: view.center,
|
|
* radius: 25,
|
|
* fillColor: 'black'
|
|
* });
|
|
*
|
|
* // When the mouse is clicked on the item,
|
|
* // set its fill color to red:
|
|
* path.onClick = function(event) {
|
|
* this.fillColor = 'red';
|
|
* }
|
|
*
|
|
* @example {@paperscript}
|
|
* // Click on the circle shaped paths to remove them:
|
|
*
|
|
* // Loop 30 times:
|
|
* for (var i = 0; i < 30; i++) {
|
|
* // Create a circle shaped path at a random position
|
|
* // in the view:
|
|
* var path = new Path.Circle({
|
|
* center: Point.random() * view.size,
|
|
* radius: 25,
|
|
* fillColor: 'black',
|
|
* strokeColor: 'white'
|
|
* });
|
|
*
|
|
* // When the mouse clicks on the item, remove it:
|
|
* path.onClick = function(event) {
|
|
* this.remove();
|
|
* }
|
|
* }
|
|
*/
|
|
|
|
/**
|
|
* The function to be called when the mouse double clicks on the item. The
|
|
* function receives a {@link MouseEvent} object which contains information
|
|
* about the mouse event.
|
|
*
|
|
* @name Item#onDoubleClick
|
|
* @property
|
|
* @type Function
|
|
*
|
|
* @example {@paperscript}
|
|
* // Double click on the circle shaped path, to make it red:
|
|
*
|
|
* // Create a circle shaped path at the center of the view:
|
|
* var path = new Path.Circle({
|
|
* center: view.center,
|
|
* radius: 25,
|
|
* fillColor: 'black'
|
|
* });
|
|
*
|
|
* // When the mouse is double clicked on the item,
|
|
* // set its fill color to red:
|
|
* path.onDoubleClick = function(event) {
|
|
* this.fillColor = 'red';
|
|
* }
|
|
*
|
|
* @example {@paperscript}
|
|
* // Double click on the circle shaped paths to remove them:
|
|
*
|
|
* // Loop 30 times:
|
|
* for (var i = 0; i < 30; i++) {
|
|
* // Create a circle shaped path at a random position
|
|
* // in the view:
|
|
* var path = new Path.Circle({
|
|
* center: Point.random() * view.size,
|
|
* radius: 25,
|
|
* fillColor: 'black',
|
|
* strokeColor: 'white'
|
|
* });
|
|
*
|
|
* // When the mouse is double clicked on the item, remove it:
|
|
* path.onDoubleClick = function(event) {
|
|
* this.remove();
|
|
* }
|
|
* }
|
|
*/
|
|
|
|
/**
|
|
* The function to be called repeatedly when the mouse moves on top of the
|
|
* item. The function receives a {@link MouseEvent} object which contains
|
|
* information about the mouse event.
|
|
*
|
|
* @name Item#onMouseMove
|
|
* @property
|
|
* @type Function
|
|
*
|
|
* @example {@paperscript}
|
|
* // Move over the circle shaped path, to change its opacity:
|
|
*
|
|
* // Create a circle shaped path at the center of the view:
|
|
* var path = new Path.Circle({
|
|
* center: view.center,
|
|
* radius: 25,
|
|
* fillColor: 'black'
|
|
* });
|
|
*
|
|
* // When the mouse moves on top of the item, set its opacity
|
|
* // to a random value between 0 and 1:
|
|
* path.onMouseMove = function(event) {
|
|
* this.opacity = Math.random();
|
|
* }
|
|
*/
|
|
|
|
/**
|
|
* The function to be called when the mouse moves over the item. This
|
|
* function will only be called again, once the mouse moved outside of the
|
|
* item first. The function receives a {@link MouseEvent} object which
|
|
* contains information about the mouse event.
|
|
*
|
|
* @name Item#onMouseEnter
|
|
* @property
|
|
* @type Function
|
|
*
|
|
* @example {@paperscript}
|
|
* // When you move the mouse over the item, its fill color is set to red.
|
|
* // When you move the mouse outside again, its fill color is set back
|
|
* // to black.
|
|
*
|
|
* // Create a circle shaped path at the center of the view:
|
|
* var path = new Path.Circle({
|
|
* center: view.center,
|
|
* radius: 25,
|
|
* fillColor: 'black'
|
|
* });
|
|
*
|
|
* // When the mouse enters the item, set its fill color to red:
|
|
* path.onMouseEnter = function(event) {
|
|
* this.fillColor = 'red';
|
|
* }
|
|
*
|
|
* // When the mouse leaves the item, set its fill color to black:
|
|
* path.onMouseLeave = function(event) {
|
|
* this.fillColor = 'black';
|
|
* }
|
|
* @example {@paperscript}
|
|
* // When you click the mouse, you create new circle shaped items. When you
|
|
* // move the mouse over the item, its fill color is set to red. When you
|
|
* // move the mouse outside again, its fill color is set back
|
|
* // to black.
|
|
*
|
|
* function enter(event) {
|
|
* this.fillColor = 'red';
|
|
* }
|
|
*
|
|
* function leave(event) {
|
|
* this.fillColor = 'black';
|
|
* }
|
|
*
|
|
* // When the mouse is pressed:
|
|
* function onMouseDown(event) {
|
|
* // Create a circle shaped path at the position of the mouse:
|
|
* var path = new Path.Circle(event.point, 25);
|
|
* path.fillColor = 'black';
|
|
*
|
|
* // When the mouse enters the item, set its fill color to red:
|
|
* path.onMouseEnter = enter;
|
|
*
|
|
* // When the mouse leaves the item, set its fill color to black:
|
|
* path.onMouseLeave = leave;
|
|
* }
|
|
*/
|
|
|
|
/**
|
|
* The function to be called when the mouse moves out of the item.
|
|
* The function receives a {@link MouseEvent} object which contains
|
|
* information about the mouse event.
|
|
*
|
|
* @name Item#onMouseLeave
|
|
* @property
|
|
* @type Function
|
|
*
|
|
* @example {@paperscript}
|
|
* // Move the mouse over the circle shaped path and then move it out
|
|
* // of it again to set its fill color to red:
|
|
*
|
|
* // Create a circle shaped path at the center of the view:
|
|
* var path = new Path.Circle({
|
|
* center: view.center,
|
|
* radius: 25,
|
|
* fillColor: 'black'
|
|
* });
|
|
*
|
|
* // When the mouse leaves the item, set its fill color to red:
|
|
* path.onMouseLeave = function(event) {
|
|
* this.fillColor = 'red';
|
|
* }
|
|
*/
|
|
|
|
/**
|
|
* {@grouptitle Event Handling}
|
|
*
|
|
* Attach an event handler to the item.
|
|
*
|
|
* @name Item#on
|
|
* @function
|
|
* @param {String('mousedown', 'mouseup', 'mousedrag', 'click',
|
|
* 'doubleclick', 'mousemove', 'mouseenter', 'mouseleave')} type the event
|
|
* type
|
|
* @param {Function} function The function to be called when the event
|
|
* occurs
|
|
*
|
|
* @example {@paperscript}
|
|
* // Change the fill color of the path to red when the mouse enters its
|
|
* // shape and back to black again, when it leaves its shape.
|
|
*
|
|
* // Create a circle shaped path at the center of the view:
|
|
* var path = new Path.Circle({
|
|
* center: view.center,
|
|
* radius: 25,
|
|
* fillColor: 'black'
|
|
* });
|
|
*
|
|
* // When the mouse enters the item, set its fill color to red:
|
|
* path.on('mouseenter', function() {
|
|
* this.fillColor = 'red';
|
|
* });
|
|
*
|
|
* // When the mouse leaves the item, set its fill color to black:
|
|
* path.on('mouseleave', function() {
|
|
* this.fillColor = 'black';
|
|
* });
|
|
*/
|
|
/**
|
|
* Attach one or more event handlers to the item.
|
|
*
|
|
* @name Item#on^2
|
|
* @function
|
|
* @param {Object} param An object literal containing one or more of the
|
|
* following properties: {@code mousedown, mouseup, mousedrag, click,
|
|
* doubleclick, mousemove, mouseenter, mouseleave}.
|
|
*
|
|
* @example {@paperscript}
|
|
* // Change the fill color of the path to red when the mouse enters its
|
|
* // shape and back to black again, when it leaves its shape.
|
|
*
|
|
* // Create a circle shaped path at the center of the view:
|
|
* var path = new Path.Circle({
|
|
* center: view.center,
|
|
* radius: 25
|
|
* });
|
|
* path.fillColor = 'black';
|
|
*
|
|
* // When the mouse enters the item, set its fill color to red:
|
|
* path.on({
|
|
* mouseenter: function(event) {
|
|
* this.fillColor = 'red';
|
|
* },
|
|
* mouseleave: function(event) {
|
|
* this.fillColor = 'black';
|
|
* }
|
|
* });
|
|
* @example {@paperscript}
|
|
* // When you click the mouse, you create new circle shaped items. When you
|
|
* // move the mouse over the item, its fill color is set to red. When you
|
|
* // move the mouse outside again, its fill color is set black.
|
|
*
|
|
* var pathHandlers = {
|
|
* mouseenter: function(event) {
|
|
* this.fillColor = 'red';
|
|
* },
|
|
* mouseleave: function(event) {
|
|
* this.fillColor = 'black';
|
|
* }
|
|
* }
|
|
*
|
|
* // When the mouse is pressed:
|
|
* function onMouseDown(event) {
|
|
* // Create a circle shaped path at the position of the mouse:
|
|
* var path = new Path.Circle({
|
|
* center: event.point,
|
|
* radius: 25,
|
|
* fillColor: 'black'
|
|
* });
|
|
*
|
|
* // Attach the handers inside the object literal to the path:
|
|
* path.on(pathHandlers);
|
|
* }
|
|
*/
|
|
|
|
/**
|
|
* Detach an event handler from the item.
|
|
*
|
|
* @name Item#detach
|
|
* @function
|
|
* @param {String('mousedown', 'mouseup', 'mousedrag', 'click',
|
|
* 'doubleclick', 'mousemove', 'mouseenter', 'mouseleave')} type the event
|
|
* type
|
|
* @param {Function} function The function to be detached
|
|
*/
|
|
/**
|
|
* Detach one or more event handlers to the item.
|
|
*
|
|
* @name Item#detach^2
|
|
* @function
|
|
* @param {Object} param An object literal containing one or more of the
|
|
* following properties: {@code mousedown, mouseup, mousedrag, click,
|
|
* doubleclick, mousemove, mouseenter, mouseleave}
|
|
*/
|
|
|
|
/**
|
|
* Fire an event on the item.
|
|
*
|
|
* @name Item#fire
|
|
* @function
|
|
* @param {String('mousedown', 'mouseup', 'mousedrag', 'click',
|
|
* 'doubleclick', 'mousemove', 'mouseenter', 'mouseleave')} type the event
|
|
* type
|
|
* @param {Object} event An object literal containing properties describing
|
|
* the event.
|
|
*/
|
|
|
|
/**
|
|
* Check if the item has one or more event handlers of the specified type.
|
|
*
|
|
* @name Item#responds
|
|
* @function
|
|
* @param {String('mousedown', 'mouseup', 'mousedrag', 'click',
|
|
* 'doubleclick', 'mousemove', 'mouseenter', 'mouseleave')} type the event
|
|
* type
|
|
* @return {Boolean} {@true if the item has one or more event handlers of
|
|
* the specified type}
|
|
*/
|
|
|
|
/**
|
|
* Private method that sets Path related styles on the canvas context.
|
|
* Not defined in Path as it is required by other classes too,
|
|
* e.g. PointText.
|
|
*/
|
|
_setStyles: function(ctx) {
|
|
// We can access internal properties since we're only using this on
|
|
// items without children, where styles would be merged.
|
|
var style = this._style,
|
|
width = style.getStrokeWidth(),
|
|
join = style.getStrokeJoin(),
|
|
cap = style.getStrokeCap(),
|
|
limit = style.getMiterLimit(),
|
|
fillColor = style.getFillColor(),
|
|
strokeColor = style.getStrokeColor(),
|
|
dashArray = style.getDashArray(),
|
|
dashOffset = style.getDashOffset();
|
|
if (width != null)
|
|
ctx.lineWidth = width;
|
|
if (join)
|
|
ctx.lineJoin = join;
|
|
if (cap)
|
|
ctx.lineCap = cap;
|
|
if (limit)
|
|
ctx.miterLimit = limit;
|
|
if (fillColor)
|
|
ctx.fillStyle = fillColor.toCanvasStyle(ctx);
|
|
if (strokeColor) {
|
|
ctx.strokeStyle = strokeColor.toCanvasStyle(ctx);
|
|
if (paper.support.nativeDash && dashArray && dashArray.length) {
|
|
if ('setLineDash' in ctx) {
|
|
ctx.setLineDash(dashArray);
|
|
ctx.lineDashOffset = dashOffset;
|
|
} else {
|
|
ctx.mozDash = dashArray;
|
|
ctx.mozDashOffset = dashOffset;
|
|
}
|
|
}
|
|
}
|
|
// If the item only defines a strokeColor or a fillColor, draw it
|
|
// directly with the globalAlpha set, otherwise we will do it later when
|
|
// we composite the temporary canvas.
|
|
if (!fillColor || !strokeColor)
|
|
ctx.globalAlpha = this._opacity;
|
|
},
|
|
|
|
// TODO: Implement View into the drawing.
|
|
// TODO: Optimize temporary canvas drawing to ignore parts that are
|
|
// outside of the visible view.
|
|
draw: function(ctx, param) {
|
|
if (!this._visible || this._opacity == 0)
|
|
return;
|
|
// Each time the project gets drawn, it's _drawCount is increased.
|
|
// Keep the _drawCount of drawn items in sync, so we have an easy
|
|
// way to filter out selected items that are not being drawn, e.g.
|
|
// because they are currently not part of the DOM.
|
|
this._drawCount = this._project._drawCount;
|
|
// Keep calculating the current global matrix, by keeping a history
|
|
// and pushing / popping as we go along.
|
|
var transforms = param.transforms,
|
|
parentMatrix = transforms[transforms.length - 1],
|
|
globalMatrix = parentMatrix.clone().concatenate(this._matrix);
|
|
transforms.push(this._globalMatrix = globalMatrix);
|
|
// If the item has a blendMode or is defining an opacity, draw it on
|
|
// a temporary canvas first and composite the canvas afterwards.
|
|
// Paths with an opacity < 1 that both define a fillColor
|
|
// and strokeColor also need to be drawn on a temporary canvas
|
|
// first, since otherwise their stroke is drawn half transparent
|
|
// over their fill.
|
|
// Exclude Raster items since they never draw a stroke and handle
|
|
// opacity by themselves (they also don't call _setStyles)
|
|
var parentCtx, itemOffset, prevOffset;
|
|
if (this._blendMode !== 'normal' || this._opacity < 1
|
|
&& this._type !== 'raster' && (this._type !== 'path'
|
|
|| this.getFillColor() && this.getStrokeColor())) {
|
|
// Apply the paren't global matrix to the calculation of correct
|
|
// bounds.
|
|
var bounds = this.getStrokeBounds(parentMatrix);
|
|
if (!bounds.width || !bounds.height)
|
|
return;
|
|
// Store previous offset and save the parent context, so we can
|
|
// draw onto it later
|
|
prevOffset = param.offset;
|
|
// Floor the offset and ceil the size, so we don't cut off any
|
|
// antialiased pixels when drawing onto the temporary canvas.
|
|
itemOffset = param.offset = bounds.getTopLeft().floor();
|
|
// Set ctx to the context of the temporary canvas,
|
|
// so we draw onto it, instead of the parentCtx
|
|
parentCtx = ctx;
|
|
ctx = CanvasProvider.getContext(
|
|
bounds.getSize().ceil().add(Size.create(1, 1)));
|
|
}
|
|
ctx.save();
|
|
// Translate the context so the topLeft of the item is at (0, 0)
|
|
// on the temporary canvas.
|
|
if (parentCtx)
|
|
ctx.translate(-itemOffset.x, -itemOffset.y);
|
|
// Apply globalMatrix when blitting into temporary canvas.
|
|
(parentCtx ? globalMatrix : this._matrix).applyToContext(ctx);
|
|
this._draw(ctx, param);
|
|
ctx.restore();
|
|
transforms.pop();
|
|
if (param.clip)
|
|
ctx.clip();
|
|
// If a temporary canvas was created before, composite it onto the
|
|
// parent canvas:
|
|
if (parentCtx) {
|
|
// Restore previous offset.
|
|
param.offset = prevOffset;
|
|
// If the item has a blendMode, use BlendMode#process to
|
|
// composite its canvas on the parentCanvas.
|
|
if (this._blendMode !== 'normal') {
|
|
// The pixel offset of the temporary canvas to the parent
|
|
// canvas.
|
|
BlendMode.process(this._blendMode, ctx, parentCtx,
|
|
this._opacity, itemOffset.subtract(prevOffset));
|
|
} else {
|
|
// Otherwise just set the globalAlpha before drawing the
|
|
// temporary canvas on the parent canvas.
|
|
parentCtx.save();
|
|
parentCtx.globalAlpha = this._opacity;
|
|
parentCtx.drawImage(ctx.canvas, itemOffset.x, itemOffset.y);
|
|
parentCtx.restore();
|
|
}
|
|
// Return the temporary context, so it can be reused
|
|
CanvasProvider.release(ctx);
|
|
}
|
|
}
|
|
}, Base.each(['down', 'drag', 'up', 'move'], function(name) {
|
|
this['removeOn' + Base.capitalize(name)] = function() {
|
|
var hash = {};
|
|
hash[name] = true;
|
|
return this.removeOn(hash);
|
|
};
|
|
}, /** @lends Item# */{
|
|
/**
|
|
* {@grouptitle Remove On Event}
|
|
*
|
|
* Removes the item when the events specified in the passed object literal
|
|
* occur.
|
|
* The object literal can contain the following values:
|
|
* Remove the item when the next {@link Tool#onMouseMove} event is
|
|
* fired: {@code object.move = true}
|
|
*
|
|
* Remove the item when the next {@link Tool#onMouseDrag} event is
|
|
* fired: {@code object.drag = true}
|
|
*
|
|
* Remove the item when the next {@link Tool#onMouseDown} event is
|
|
* fired: {@code object.down = true}
|
|
*
|
|
* Remove the item when the next {@link Tool#onMouseUp} event is
|
|
* fired: {@code object.up = true}
|
|
*
|
|
* @name Item#removeOn
|
|
* @function
|
|
* @param {Object} object
|
|
*
|
|
* @example {@paperscript height=200}
|
|
* // Click and drag below:
|
|
* function onMouseDrag(event) {
|
|
* // Create a circle shaped path at the mouse position,
|
|
* // with a radius of 10:
|
|
* var path = new Path.Circle({
|
|
* center: event.point,
|
|
* radius: 10,
|
|
* fillColor: 'black'
|
|
* });
|
|
*
|
|
* // Remove the path on the next onMouseDrag or onMouseDown event:
|
|
* path.removeOn({
|
|
* drag: true,
|
|
* down: true
|
|
* });
|
|
* }
|
|
*/
|
|
|
|
/**
|
|
* Removes the item when the next {@link Tool#onMouseMove} event is fired.
|
|
*
|
|
* @name Item#removeOnMove
|
|
* @function
|
|
*
|
|
* @example {@paperscript height=200}
|
|
* // Move your mouse below:
|
|
* function onMouseMove(event) {
|
|
* // Create a circle shaped path at the mouse position,
|
|
* // with a radius of 10:
|
|
* var path = new Path.Circle({
|
|
* center: event.point,
|
|
* radius: 10,
|
|
* fillColor: 'black'
|
|
* });
|
|
*
|
|
* // On the next move event, automatically remove the path:
|
|
* path.removeOnMove();
|
|
* }
|
|
*/
|
|
|
|
/**
|
|
* Removes the item when the next {@link Tool#onMouseDown} event is fired.
|
|
*
|
|
* @name Item#removeOnDown
|
|
* @function
|
|
*
|
|
* @example {@paperscript height=200}
|
|
* // Click a few times below:
|
|
* function onMouseDown(event) {
|
|
* // Create a circle shaped path at the mouse position,
|
|
* // with a radius of 10:
|
|
* var path = new Path.Circle({
|
|
* center: event.point,
|
|
* radius: 10,
|
|
* fillColor: 'black'
|
|
* });
|
|
*
|
|
* // Remove the path, next time the mouse is pressed:
|
|
* path.removeOnDown();
|
|
* }
|
|
*/
|
|
|
|
/**
|
|
* Removes the item when the next {@link Tool#onMouseDrag} event is fired.
|
|
*
|
|
* @name Item#removeOnDrag
|
|
* @function
|
|
*
|
|
* @example {@paperscript height=200}
|
|
* // Click and drag below:
|
|
* function onMouseDrag(event) {
|
|
* // Create a circle shaped path at the mouse position,
|
|
* // with a radius of 10:
|
|
* var path = new Path.Circle({
|
|
* center: event.point,
|
|
* radius: 10,
|
|
* fillColor: 'black'
|
|
* });
|
|
*
|
|
* // On the next drag event, automatically remove the path:
|
|
* path.removeOnDrag();
|
|
* }
|
|
*/
|
|
|
|
/**
|
|
* Removes the item when the next {@link Tool#onMouseUp} event is fired.
|
|
*
|
|
* @name Item#removeOnUp
|
|
* @function
|
|
*
|
|
* @example {@paperscript height=200}
|
|
* // Click a few times below:
|
|
* function onMouseDown(event) {
|
|
* // Create a circle shaped path at the mouse position,
|
|
* // with a radius of 10:
|
|
* var path = new Path.Circle({
|
|
* center: event.point,
|
|
* radius: 10,
|
|
* fillColor: 'black'
|
|
* });
|
|
*
|
|
* // Remove the path, when the mouse is released:
|
|
* path.removeOnUp();
|
|
* }
|
|
*/
|
|
// TODO: implement Item#removeOnFrame
|
|
removeOn: function(obj) {
|
|
for (var name in obj) {
|
|
if (obj[name]) {
|
|
var key = 'mouse' + name,
|
|
sets = Tool._removeSets = Tool._removeSets || {};
|
|
sets[key] = sets[key] || {};
|
|
sets[key][this._id] = this;
|
|
}
|
|
}
|
|
return this;
|
|
}
|
|
}));
|