Файл: concrete5.7.5.6/concrete/js/build/vendor/jquery-fileupload/load-image-orientation.js
Строк: 252
<?php
/*
* JavaScript Load Image Orientation 1.1.0
* https://github.com/blueimp/JavaScript-Load-Image
*
* Copyright 2013, Sebastian Tschan
* https://blueimp.net
*
* Licensed under the MIT license:
* http://www.opensource.org/licenses/MIT
*/
/*global define, window */
(function (factory) {
'use strict';
if (typeof define === 'function' && define.amd) {
// Register as an anonymous AMD module:
define(['load-image'], factory);
} else {
// Browser globals:
factory(window.loadImage);
}
}(function (loadImage) {
'use strict';
var originalHasCanvasOption = loadImage.hasCanvasOption,
originalTransformCoordinates = loadImage.transformCoordinates,
originalGetTransformedOptions = loadImage.getTransformedOptions;
// This method is used to determine if the target image
// should be a canvas element:
loadImage.hasCanvasOption = function (options) {
return originalHasCanvasOption.call(loadImage, options) ||
options.orientation;
};
// Transform image orientation based on
// the given EXIF orientation option:
loadImage.transformCoordinates = function (canvas, options) {
originalTransformCoordinates.call(loadImage, canvas, options);
var ctx = canvas.getContext('2d'),
width = canvas.width,
height = canvas.height,
orientation = options.orientation;
if (!orientation || orientation > 8) {
return;
}
if (orientation > 4) {
canvas.width = height;
canvas.height = width;
}
switch (orientation) {
case 2:
// horizontal flip
ctx.translate(width, 0);
ctx.scale(-1, 1);
break;
case 3:
// 180° rotate left
ctx.translate(width, height);
ctx.rotate(Math.PI);
break;
case 4:
// vertical flip
ctx.translate(0, height);
ctx.scale(1, -1);
break;
case 5:
// vertical flip + 90 rotate right
ctx.rotate(0.5 * Math.PI);
ctx.scale(1, -1);
break;
case 6:
// 90° rotate right
ctx.rotate(0.5 * Math.PI);
ctx.translate(0, -height);
break;
case 7:
// horizontal flip + 90 rotate right
ctx.rotate(0.5 * Math.PI);
ctx.translate(width, -height);
ctx.scale(-1, 1);
break;
case 8:
// 90° rotate left
ctx.rotate(-0.5 * Math.PI);
ctx.translate(-width, 0);
break;
}
};
// Transforms coordinate and dimension options
// based on the given orientation option:
loadImage.getTransformedOptions = function (img, opts) {
var options = originalGetTransformedOptions.call(loadImage, img, opts),
orientation = options.orientation,
newOptions,
i;
if (!orientation || orientation > 8 || orientation === 1) {
return options;
}
newOptions = {};
for (i in options) {
if (options.hasOwnProperty(i)) {
newOptions[i] = options[i];
}
}
switch (options.orientation) {
case 2:
// horizontal flip
newOptions.left = options.right;
newOptions.right = options.left;
break;
case 3:
// 180° rotate left
newOptions.left = options.right;
newOptions.top = options.bottom;
newOptions.right = options.left;
newOptions.bottom = options.top;
break;
case 4:
// vertical flip
newOptions.top = options.bottom;
newOptions.bottom = options.top;
break;
case 5:
// vertical flip + 90 rotate right
newOptions.left = options.top;
newOptions.top = options.left;
newOptions.right = options.bottom;
newOptions.bottom = options.right;
break;
case 6:
// 90° rotate right
newOptions.left = options.top;
newOptions.top = options.right;
newOptions.right = options.bottom;
newOptions.bottom = options.left;
break;
case 7:
// horizontal flip + 90 rotate right
newOptions.left = options.bottom;
newOptions.top = options.right;
newOptions.right = options.top;
newOptions.bottom = options.left;
break;
case 8:
// 90° rotate left
newOptions.left = options.bottom;
newOptions.top = options.left;
newOptions.right = options.top;
newOptions.bottom = options.right;
break;
}
if (options.orientation > 4) {
newOptions.maxWidth = options.maxHeight;
newOptions.maxHeight = options.maxWidth;
newOptions.minWidth = options.minHeight;
newOptions.minHeight = options.minWidth;
newOptions.sourceWidth = options.sourceHeight;
newOptions.sourceHeight = options.sourceWidth;
}
return newOptions;
};
}));
?>