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88 lines
2 KiB
JavaScript
88 lines
2 KiB
JavaScript
/*
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* Paper.js
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*
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* This file is part of Paper.js, a JavaScript Vector Graphics Library,
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* based on Scriptographer.org and designed to be largely API compatible.
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* http://paperjs.org/
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* http://scriptographer.org/
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*
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* Distributed under the MIT license. See LICENSE file for details.
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*
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* Copyright (c) 2011, Juerg Lehni & Jonathan Puckey
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* http://lehni.org/ & http://jonathanpuckey.com/
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*
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* All rights reserved.
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*/
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var DocumentView = this.DocumentView = Base.extend({
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beans: true,
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initialize: function(document) {
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this.document = document;
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this._bounds = this.document.bounds.clone();
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this.matrix = new Matrix();
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this._zoom = 1;
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this._center = this._bounds.center;
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},
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// TODO: test this.
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getCenter: function() {
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return this._center;
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},
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setCenter: function(center) {
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center = Point.read(arguments);
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var delta = center.subtract(this._center);
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this.scrollBy(delta);
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this._center = center;
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},
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getZoom: function() {
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return this._zoom;
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},
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setZoom: function(zoom) {
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// TODO: clamp the view between 1/32 and 64?
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var mx = new Matrix();
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mx.scale(zoom / this._zoom, this._center);
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this.transform(mx);
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this._zoom = zoom;
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},
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scrollBy: function(point) {
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point = Point.read(arguments);
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this.transform(new Matrix().translate(point.negate()));
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},
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transform: function(matrix, flags) {
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this.matrix.preConcatenate(matrix);
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this._bounds = null;
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},
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getBounds: function() {
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if (!this._bounds) {
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this._bounds = this.matrix.transformBounds(this.document.bounds);
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}
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return this._bounds;
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},
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// TODO:
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// setBounds: function(rect) {
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//
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// },
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// TODO: getInvalidBounds
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// TODO: invalidate(rect)
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// TODO: style: artwork / preview / raster / opaque / ink
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// TODO: getShowGrid
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// TODO: getMousePoint
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// TODO: artworkToView(rect)
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artworkToView: function(point) {
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return this.matrix.transform(point);
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},
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viewToArtwork: function(point) {
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// TODO: cache the inverse matrix:
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return this.matrix.createInverse().transform(point);
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}
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});
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