paper.js/src/item/Layer.js
2011-02-21 03:32:39 +01:00

74 lines
1.6 KiB
JavaScript

Layer = Group.extend({
beans: true,
initialize: function() {
this.children = [];
this.document = Paper.document;
this.document.layers.push(this);
this.activate();
},
getIndex: function() {
return !this.parent ? this.document.layers.indexOf(this) : this.base();
},
/**
* Removes the layer from its document's layers list
* or its parent's children list.
*/
removeFromParent: function() {
if (!this.parent) {
this.document.layers.splice(this.index, 1);
} else {
this.base();
}
},
moveAbove: function(item) {
// if the item is a layer and contained within Document#layers
if (item instanceof Layer && !item.parent) {
this.removeFromParent();
item.document.layers.splice(item.index + 1, 0, this);
this.document = item.document;
return true;
} else {
this.base(item);
}
},
moveBelow: function(item) {
// if the item is a layer and contained within Document#layers
if (item instanceof Layer && !item.parent) {
this.removeFromParent();
item.document.layers.splice(item.index - 1, 0, this);
this.document = item.document;
return true;
} else {
this.base(item);
}
},
getNextSibling: function() {
if (!this.parent) {
var index = this.index + 1;
if (index < this.document.layers.length)
return this.document.layers[index];
} else {
return this.base();
}
},
getPreviousSibling: function() {
if (!this.parent) {
var index = this.index - 1;
if (index <= 0)
return this.document.layers[index];
} else {
return this.base();
}
},
activate: function() {
this.document.activeLayer = this;
}
});