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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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/**
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* Provides an in browser PDF editor.
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*
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* @module moodle-assignfeedback_editpdf-editor
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*/
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/**
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* Class representing a drawable thing which contains both Y.Nodes, and Y.Shapes.
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*
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* @namespace M.assignfeedback_editpdf
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* @param M.assignfeedback_editpdf.editor editor
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* @class drawable
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*/
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var DRAWABLE = function(editor) {
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/**
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* Reference to M.assignfeedback_editpdf.editor.
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* @property editor
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* @type M.assignfeedback_editpdf.editor
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* @public
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*/
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this.editor = editor;
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/**
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* Array of Y.Shape
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* @property shapes
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* @type Y.Shape[]
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* @public
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*/
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this.shapes = [];
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/**
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* Array of Y.Node
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* @property nodes
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* @type Y.Node[]
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* @public
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*/
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this.nodes = [];
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/**
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* Delete the shapes from the drawable.
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* @protected
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* @method erase_drawable
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*/
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this.erase = function() {
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if (this.shapes) {
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while (this.shapes.length > 0) {
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this.editor.graphic.removeShape(this.shapes.pop());
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}
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}
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if (this.nodes) {
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while (this.nodes.length > 0) {
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this.nodes.pop().remove();
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}
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}
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};
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/**
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* Update the positions of all absolutely positioned nodes, when the drawing canvas is scrolled
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* @public
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* @method scroll_update
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* @param scrollx int
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* @param scrolly int
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*/
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this.scroll_update = function(scrollx, scrolly) {
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var i, x, y;
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for (i = 0; i < this.nodes.length; i++) {
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x = this.nodes[i].getData('x');
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y = this.nodes[i].getData('y');
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if (x !== undefined && y !== undefined) {
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this.nodes[i].setX(parseInt(x, 10) - scrollx);
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this.nodes[i].setY(parseInt(y, 10) - scrolly);
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}
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}
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};
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/**
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* Store the initial position of the node, so it can be updated when the drawing canvas is scrolled
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* @public
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* @method store_position
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* @param container
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* @param x
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* @param y
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*/
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this.store_position = function(container, x, y) {
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var drawingregion, scrollx, scrolly;
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drawingregion = this.editor.get_dialogue_element(SELECTOR.DRAWINGREGION);
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scrollx = parseInt(drawingregion.get('scrollLeft'), 10);
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scrolly = parseInt(drawingregion.get('scrollTop'), 10);
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container.setData('x', x + scrollx);
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container.setData('y', y + scrolly);
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};
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};
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M.assignfeedback_editpdf = M.assignfeedback_editpdf || {};
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M.assignfeedback_editpdf.drawable = DRAWABLE;
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