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93 lines
3.0 KiB
Plaintext
93 lines
3.0 KiB
Plaintext
11 months ago
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"use strict";
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/*
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Copyright [2014] [Diagramo]
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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/**
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* Used to do/undo actions when the canvas gets fitted.
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* Function will translate everything on canvas on (-startX, -startY).
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* @this {CanvasFitCommand}
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* @constructor
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* @param {Number} newWidth - the new width of the canvas
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* @param {Number} newHeight - the new height of the canvas
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* @param {Number} startX - the new X coordinate to shift start point
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* @param {Number} startY - the new Y coordinate to shift start point
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* @author Arty
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*/
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function CanvasFitCommand(newWidth, newHeight, startX, startY){
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this.previousWidth = canvasProps.width;
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this.previousHeight = canvasProps.height;
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this.width = newWidth;
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this.height = newHeight;
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this.startX = typeof(startX) !== 'undefined' ? startX : 0;
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this.startY = typeof(startY) !== 'undefined' ? startY : 0;
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// define if canvas should change size or become translated
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this.canvasResizing = this.previousWidth !== this.width || this.previousHeight !== this.height;
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this.canvasTranslation = this.startX !== 0 || this.startY !== 0;
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this.oType = "CanvasFitCommand";
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}
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CanvasFitCommand.prototype = {
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constructor : CanvasFitCommand,
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/**This method got called every time the Command must execute*/
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execute : function(){
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// Does canvas should be translated?
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if (this.canvasTranslation) {
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// get translation matrix
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var translationMatrix = Matrix.translationMatrix(-this.startX, -this.startY);
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// apply translation to objects in STACK
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STACK.transform(translationMatrix);
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}
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// Does canvas should be resized?
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if (this.canvasResizing) {
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// set new size of canvas
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canvasProps.setWidth(this.width);
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canvasProps.setHeight(this.height);
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}
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setUpEditPanel(canvasProps);
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},
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/**This method should be called every time the Command should be undone*/
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undo : function(){
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// Canvas was resized?
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if (this.canvasResizing) {
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// set previous size of canvas
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canvasProps.setWidth(this.previousWidth);
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canvasProps.setHeight(this.previousHeight);
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}
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// Canvas was translated?
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if (this.canvasTranslation) {
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// get backward translation matrix
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var translationMatrix = Matrix.translationMatrix(this.startX, this.startY);
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// apply translation to objects in STACK
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STACK.transform(translationMatrix);
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}
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setUpEditPanel(canvasProps);
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}
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};
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