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Comparing version 3.0.0 to 4.0.0

13

js/load-image-meta.js

@@ -99,2 +99,4 @@ /*

var i
var arr1
var arr2
// Check for the JPEG marker (0xffd8):

@@ -148,5 +150,8 @@ if (dataView.getUint16(0) === 0xffd8) {

} else {
// Workaround for IE10, which does not yet
// support ArrayBuffer.slice:
data.imageHead = new Uint8Array(buffer).subarray(0, headLength)
// Workaround for IE10, which does not support
// ArrayBuffer.slice:
arr1 = new Uint8Array(buffer, 0, headLength)
arr2 = new Uint8Array(headLength)
arr2.set(arr1)
data.imageHead = arr2.buffer
}

@@ -186,3 +191,3 @@ }

loadImage.transform = function (img, options, callback, file, data) {
if (loadImage.hasMetaOption(options)) {
if (loadImage.requiresMetaData(options)) {
loadImage.parseMetaData(

@@ -189,0 +194,0 @@ file,

477

js/load-image-orientation.js

@@ -12,2 +12,31 @@ /*

/*
Exif orientation values to correctly display the letter F:
1 2
██████ ██████
██ ██
████ ████
██ ██
██ ██
3 4
██ ██
██ ██
████ ████
██ ██
██████ ██████
5 6
██████████ ██
██ ██ ██ ██
██ ██████████
7 8
██ ██████████
██ ██ ██ ██
██████████ ██
*/
/* global define, module, require */

@@ -33,10 +62,14 @@

var originalHasCanvasOption = loadImage.hasCanvasOption
var originalHasMetaOption = loadImage.hasMetaOption
var originalTransform = loadImage.transform
var originalRequiresCanvas = loadImage.requiresCanvas
var originalRequiresMetaData = loadImage.requiresMetaData
var originalTransformCoordinates = loadImage.transformCoordinates
var originalGetTransformedOptions = loadImage.getTransformedOptions
;(function () {
// black 2x1 JPEG, with the following meta information set:
;(function ($) {
// black+white 3x2 JPEG, with the following meta information set:
// - EXIF Orientation: 6 (Rotated 90° CCW)
// Image data layout (B=black, F=white):
// BFF
// BBB
var testImageURL =

@@ -46,19 +79,110 @@ 'data:image/jpeg;base64,/9j/4QAiRXhpZgAATU0AKgAAAAgAAQESAAMAAAABAAYAAAA' +

'QEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQE' +
'BAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAf/AABEIAAEAAgMBEQACEQEDEQH/x' +
'ABKAAEAAAAAAAAAAAAAAAAAAAALEAEAAAAAAAAAAAAAAAAAAAAAAQEAAAAAAAAAAAAAAAA' +
'AAAAAEQEAAAAAAAAAAAAAAAAAAAAA/9oADAMBAAIRAxEAPwA/8H//2Q=='
'BAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAf/AABEIAAIAAwMBEQACEQEDEQH/x' +
'ABRAAEAAAAAAAAAAAAAAAAAAAAKEAEBAQADAQEAAAAAAAAAAAAGBQQDCAkCBwEBAAAAAAA' +
'AAAAAAAAAAAAAABEBAAAAAAAAAAAAAAAAAAAAAP/aAAwDAQACEQMRAD8AG8T9NfSMEVMhQ' +
'voP3fFiRZ+MTHDifa/95OFSZU5OzRzxkyejv8ciEfhSceSXGjS8eSdLnZc2HDm4M3BxcXw' +
'H/9k='
var img = document.createElement('img')
img.onload = function () {
// Check if browser supports automatic image orientation:
loadImage.orientation = img.width === 1 && img.height === 2
// Check if the browser supports automatic image orientation:
$.orientation = img.width === 2 && img.height === 3
if ($.orientation) {
var canvas = $.createCanvas(1, 1, true)
var ctx = canvas.getContext('2d')
ctx.drawImage(img, 1, 1, 1, 1, 0, 0, 1, 1)
// Check if the source image coordinates (sX, sY, sWidth, sHeight) are
// correctly applied to the auto-orientated image, which should result
// in a white opaque pixel (e.g. in Safari).
// Browsers that show a transparent pixel (e.g. Chromium) fail to crop
// auto-oriented images correctly and require a workaround, e.g.
// drawing the complete source image to an intermediate canvas first.
// See https://bugs.chromium.org/p/chromium/issues/detail?id=1074354
$.orientationCropBug =
ctx.getImageData(0, 0, 1, 1).data.toString() !== '255,255,255,255'
}
}
img.src = testImageURL
})()
})(loadImage)
/**
* Determines if the orientation requires a canvas element.
*
* @param {object} [options] Options object
* @param {boolean} [withMetaData] Is meta data required for orientation
* @returns {boolean} Returns true if orientation requires canvas/meta
*/
function requiresCanvasOrientation(options, withMetaData) {
var orientation = options && options.orientation
return (
// Exif orientation for browsers without automatic image orientation:
(orientation === true && !loadImage.orientation) ||
// Orientation reset for browsers with automatic image orientation:
(orientation === 1 && loadImage.orientation) ||
// Orientation to defined value, requires meta for orientation reset only:
((!withMetaData || loadImage.orientation) &&
orientation > 1 &&
orientation < 9)
)
}
/**
* Determines if the image requires an orientation change.
*
* @param {number} [orientation] Defined orientation value
* @param {number} [autoOrientation] Auto-orientation based on Exif data
* @returns {boolean} Returns true if an orientation change is required
*/
function requiresOrientationChange(orientation, autoOrientation) {
return (
orientation !== autoOrientation &&
((orientation === 1 && autoOrientation > 1 && autoOrientation < 9) ||
(orientation > 1 && orientation < 9))
)
}
/**
* Determines orientation combinations that require a rotation by 180°.
*
* The following is a list of combinations that return true:
*
* 2 (flip) => 5 (rot90,flip), 7 (rot90,flip), 6 (rot90), 8 (rot90)
* 4 (flip) => 5 (rot90,flip), 7 (rot90,flip), 6 (rot90), 8 (rot90)
*
* 5 (rot90,flip) => 2 (flip), 4 (flip), 6 (rot90), 8 (rot90)
* 7 (rot90,flip) => 2 (flip), 4 (flip), 6 (rot90), 8 (rot90)
*
* 6 (rot90) => 2 (flip), 4 (flip), 5 (rot90,flip), 7 (rot90,flip)
* 8 (rot90) => 2 (flip), 4 (flip), 5 (rot90,flip), 7 (rot90,flip)
*
* @param {number} [orientation] Defined orientation value
* @param {number} [autoOrientation] Auto-orientation based on Exif data
* @returns {boolean} Returns true if rotation by 180° is required
*/
function requiresRot180(orientation, autoOrientation) {
if (autoOrientation > 1 && autoOrientation < 9) {
switch (orientation) {
case 2:
case 4:
return autoOrientation > 4
case 5:
case 7:
return autoOrientation % 2 === 0
case 6:
case 8:
return (
autoOrientation === 2 ||
autoOrientation === 4 ||
autoOrientation === 5 ||
autoOrientation === 7
)
}
}
return false
}
// Determines if the target image should be a canvas element:
loadImage.hasCanvasOption = function (options) {
loadImage.requiresCanvas = function (options) {
return (
(!!options.orientation === true && !loadImage.orientation) ||
(options.orientation > 1 && options.orientation < 9) ||
originalHasCanvasOption.call(loadImage, options)
requiresCanvasOrientation(options) ||
originalRequiresCanvas.call(loadImage, options)
)

@@ -68,149 +192,292 @@ }

// Determines if meta data should be loaded automatically:
loadImage.hasMetaOption = function (options) {
loadImage.requiresMetaData = function (options) {
return (
(options && options.orientation === true && !loadImage.orientation) ||
originalHasMetaOption.call(loadImage, options)
requiresCanvasOrientation(options, true) ||
originalRequiresMetaData.call(loadImage, options)
)
}
// 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')
var width = canvas.width
var height = canvas.height
var styleWidth = canvas.style.width
var styleHeight = canvas.style.height
loadImage.transform = function (img, options, callback, file, data) {
originalTransform.call(
loadImage,
img,
options,
function (img, data) {
if (data) {
var autoOrientation =
loadImage.orientation && data.exif && data.exif.get('Orientation')
if (autoOrientation > 4 && autoOrientation < 9) {
// Automatic image orientation switched image dimensions
var originalWidth = data.originalWidth
var originalHeight = data.originalHeight
data.originalWidth = originalHeight
data.originalHeight = originalWidth
}
}
callback(img, data)
},
file,
data
)
}
// Transforms coordinate and dimension options
// based on the given orientation option:
loadImage.getTransformedOptions = function (img, opts, data) {
var options = originalGetTransformedOptions.call(loadImage, img, opts)
var exifOrientation = data.exif && data.exif.get('Orientation')
var orientation = options.orientation
if (!(orientation > 1 && orientation < 9)) {
return
var autoOrientation = loadImage.orientation && exifOrientation
if (orientation === true) orientation = exifOrientation
if (!requiresOrientationChange(orientation, autoOrientation)) {
return options
}
if (orientation > 4) {
canvas.width = height
canvas.height = width
canvas.style.width = styleHeight
canvas.style.height = styleWidth
var top = options.top
var right = options.right
var bottom = options.bottom
var left = options.left
var newOptions = {}
for (var i in options) {
if (Object.prototype.hasOwnProperty.call(options, i)) {
newOptions[i] = options[i]
}
}
newOptions.orientation = orientation
if (
(orientation > 4 && !(autoOrientation > 4)) ||
(orientation < 5 && autoOrientation > 4)
) {
// Image dimensions and target dimensions are switched
newOptions.maxWidth = options.maxHeight
newOptions.maxHeight = options.maxWidth
newOptions.minWidth = options.minHeight
newOptions.minHeight = options.minWidth
newOptions.sourceWidth = options.sourceHeight
newOptions.sourceHeight = options.sourceWidth
}
if (autoOrientation > 1) {
// Browsers which correctly apply source image coordinates to
// auto-oriented images
switch (autoOrientation) {
case 2:
// horizontal flip
right = options.left
left = options.right
break
case 3:
// 180° rotate left
top = options.bottom
right = options.left
bottom = options.top
left = options.right
break
case 4:
// vertical flip
top = options.bottom
bottom = options.top
break
case 5:
// horizontal flip + 90° rotate left
top = options.left
right = options.bottom
bottom = options.right
left = options.top
break
case 6:
// 90° rotate left
top = options.left
right = options.top
bottom = options.right
left = options.bottom
break
case 7:
// vertical flip + 90° rotate left
top = options.right
right = options.top
bottom = options.left
left = options.bottom
break
case 8:
// 90° rotate right
top = options.right
right = options.bottom
bottom = options.left
left = options.top
break
}
// Some orientation combinations require additional rotation by 180°:
if (requiresRot180(orientation, autoOrientation)) {
var tmpTop = top
var tmpRight = right
top = bottom
right = left
bottom = tmpTop
left = tmpRight
}
}
newOptions.top = top
newOptions.right = right
newOptions.bottom = bottom
newOptions.left = left
// Account for defined browser orientation:
switch (orientation) {
case 2:
// horizontal flip
ctx.translate(width, 0)
ctx.scale(-1, 1)
newOptions.right = left
newOptions.left = right
break
case 3:
// 180° rotate left
ctx.translate(width, height)
ctx.rotate(Math.PI)
newOptions.top = bottom
newOptions.right = left
newOptions.bottom = top
newOptions.left = right
break
case 4:
// vertical flip
ctx.translate(0, height)
ctx.scale(1, -1)
newOptions.top = bottom
newOptions.bottom = top
break
case 5:
// vertical flip + 90 rotate right
ctx.rotate(0.5 * Math.PI)
ctx.scale(1, -1)
// vertical flip + 90° rotate right
newOptions.top = left
newOptions.right = bottom
newOptions.bottom = right
newOptions.left = top
break
case 6:
// 90° rotate right
ctx.rotate(0.5 * Math.PI)
ctx.translate(0, -height)
newOptions.top = right
newOptions.right = bottom
newOptions.bottom = left
newOptions.left = top
break
case 7:
// horizontal flip + 90 rotate right
ctx.rotate(0.5 * Math.PI)
ctx.translate(width, -height)
ctx.scale(-1, 1)
// horizontal flip + 90° rotate right
newOptions.top = right
newOptions.right = top
newOptions.bottom = left
newOptions.left = bottom
break
case 8:
// 90° rotate left
ctx.rotate(-0.5 * Math.PI)
ctx.translate(-width, 0)
newOptions.top = left
newOptions.right = top
newOptions.bottom = right
newOptions.left = bottom
break
}
return newOptions
}
// Transforms coordinate and dimension options
// based on the given orientation option:
loadImage.getTransformedOptions = function (img, opts, data) {
var options = originalGetTransformedOptions.call(loadImage, img, opts)
// Transform image orientation based on the given EXIF orientation option:
loadImage.transformCoordinates = function (canvas, options, data) {
originalTransformCoordinates.call(loadImage, canvas, options, data)
var orientation = options.orientation
var newOptions
var i
if (orientation === true) {
if (loadImage.orientation) {
// Browser supports automatic image orientation
return options
}
orientation = data && data.exif && data.exif.get('Orientation')
var autoOrientation =
loadImage.orientation && data.exif && data.exif.get('Orientation')
if (!requiresOrientationChange(orientation, autoOrientation)) {
return
}
if (!(orientation > 1 && orientation < 9)) {
return options
var ctx = canvas.getContext('2d')
var width = canvas.width
var height = canvas.height
var sourceWidth = width
var sourceHeight = height
if (
(orientation > 4 && !(autoOrientation > 4)) ||
(orientation < 5 && autoOrientation > 4)
) {
// Image dimensions and target dimensions are switched
canvas.width = height
canvas.height = width
}
newOptions = {}
for (i in options) {
if (Object.prototype.hasOwnProperty.call(options, i)) {
newOptions[i] = options[i]
}
if (orientation > 4) {
// Destination and source dimensions are switched
sourceWidth = height
sourceHeight = width
}
newOptions.orientation = orientation
// Reset automatic browser orientation:
switch (autoOrientation) {
case 2:
// horizontal flip
ctx.translate(sourceWidth, 0)
ctx.scale(-1, 1)
break
case 3:
// 180° rotate left
ctx.translate(sourceWidth, sourceHeight)
ctx.rotate(Math.PI)
break
case 4:
// vertical flip
ctx.translate(0, sourceHeight)
ctx.scale(1, -1)
break
case 5:
// horizontal flip + 90° rotate left
ctx.rotate(-0.5 * Math.PI)
ctx.scale(-1, 1)
break
case 6:
// 90° rotate left
ctx.rotate(-0.5 * Math.PI)
ctx.translate(-sourceWidth, 0)
break
case 7:
// vertical flip + 90° rotate left
ctx.rotate(-0.5 * Math.PI)
ctx.translate(-sourceWidth, sourceHeight)
ctx.scale(1, -1)
break
case 8:
// 90° rotate right
ctx.rotate(0.5 * Math.PI)
ctx.translate(0, -sourceHeight)
break
}
// Some orientation combinations require additional rotation by 180°:
if (requiresRot180(orientation, autoOrientation)) {
ctx.translate(sourceWidth, sourceHeight)
ctx.rotate(Math.PI)
}
switch (orientation) {
case 2:
// horizontal flip
newOptions.left = options.right
newOptions.right = options.left
ctx.translate(width, 0)
ctx.scale(-1, 1)
break
case 3:
// 180° rotate left
newOptions.left = options.right
newOptions.top = options.bottom
newOptions.right = options.left
newOptions.bottom = options.top
ctx.translate(width, height)
ctx.rotate(Math.PI)
break
case 4:
// vertical flip
newOptions.top = options.bottom
newOptions.bottom = options.top
ctx.translate(0, height)
ctx.scale(1, -1)
break
case 5:
// vertical flip + 90 rotate right
newOptions.left = options.top
newOptions.top = options.left
newOptions.right = options.bottom
newOptions.bottom = options.right
// vertical flip + 90° rotate right
ctx.rotate(0.5 * Math.PI)
ctx.scale(1, -1)
break
case 6:
// 90° rotate right
newOptions.left = options.top
newOptions.top = options.right
newOptions.right = options.bottom
newOptions.bottom = options.left
ctx.rotate(0.5 * Math.PI)
ctx.translate(0, -height)
break
case 7:
// horizontal flip + 90 rotate right
newOptions.left = options.bottom
newOptions.top = options.right
newOptions.right = options.top
newOptions.bottom = options.left
// 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
newOptions.left = options.bottom
newOptions.top = options.left
newOptions.right = options.top
newOptions.bottom = options.right
ctx.rotate(-0.5 * Math.PI)
ctx.translate(-width, 0)
break
}
if (newOptions.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
}
})

139

js/load-image-scale.js

@@ -30,2 +30,12 @@ /*

loadImage.createCanvas = function (width, height, offscreen) {
if (offscreen && loadImage.global.OffscreenCanvas) {
return new OffscreenCanvas(width, height)
}
var canvas = document.createElement('canvas')
canvas.width = width
canvas.height = height
return canvas
}
loadImage.transform = function (img, options, callback, file, data) {

@@ -44,3 +54,3 @@ originalTransform.call(

// the canvas orientation based on the orientation option,
// gets canvas, options passed as arguments:
// gets canvas, options and data passed as arguments:
loadImage.transformCoordinates = function () {}

@@ -50,3 +60,3 @@

// maxWidth, maxHeight and crop options based on the aspectRatio.
// gets img, options passed as arguments:
// gets img, options, data passed as arguments:
loadImage.getTransformedOptions = function (img, options) {

@@ -81,5 +91,5 @@ var aspectRatio = options.aspectRatio

// Canvas render method, allows to implement a different rendering algorithm:
loadImage.renderImageToCanvas = function (
loadImage.drawImage = function (
img,
canvas,
img,
sourceX,

@@ -89,4 +99,2 @@ sourceY,

sourceHeight,
destX,
destY,
destWidth,

@@ -98,2 +106,3 @@ destHeight,

if (options.imageSmoothingEnabled === false) {
ctx.msImageSmoothingEnabled = false
ctx.imageSmoothingEnabled = false

@@ -109,12 +118,12 @@ } else if (options.imageSmoothingQuality) {

sourceHeight,
destX,
destY,
0,
0,
destWidth,
destHeight
)
return canvas
return ctx
}
// Determines if the target image should be a canvas element:
loadImage.hasCanvasOption = function (options) {
loadImage.requiresCanvas = function (options) {
return options.canvas || options.crop || !!options.aspectRatio

@@ -124,13 +133,12 @@ }

// Scales and/or crops the given image (img or canvas HTML element)
// using the given options.
// Returns a canvas object if the browser supports canvas
// and the hasCanvasOption method returns true or a canvas
// object is passed as image, else the scaled image:
// using the given options:
loadImage.scale = function (img, options, data) {
// eslint-disable-next-line no-param-reassign
options = options || {}
var canvas = document.createElement('canvas')
// eslint-disable-next-line no-param-reassign
data = data || {}
var useCanvas =
img.getContext ||
(loadImage.hasCanvasOption(options) && canvas.getContext)
(loadImage.requiresCanvas(options) &&
!!loadImage.global.HTMLCanvasElement)
var width = img.naturalWidth || img.width

@@ -151,2 +159,3 @@ var height = img.naturalHeight || img.height

var tmp
var canvas
/**

@@ -236,9 +245,33 @@ * Scales up image dimensions

pixelRatio = options.pixelRatio
if (pixelRatio > 1) {
canvas.style.width = destWidth + 'px'
canvas.style.height = destHeight + 'px'
if (
pixelRatio > 1 &&
// Check if image has not yet device pixel ratio applied:
parseInt(img.style.width, 10) !== width / pixelRatio
) {
destWidth *= pixelRatio
destHeight *= pixelRatio
canvas.getContext('2d').scale(pixelRatio, pixelRatio)
}
// Check if workaround for Chromium orientation crop bug is required:
// https://bugs.chromium.org/p/chromium/issues/detail?id=1074354
if (
loadImage.orientationCropBug &&
!img.getContext &&
(sourceX || sourceY || sourceWidth !== width || sourceHeight !== height)
) {
// Write the complete source image to an intermediate canvas first:
tmp = img
// eslint-disable-next-line no-param-reassign
img = loadImage.createCanvas(width, height, true)
loadImage.drawImage(
tmp,
img,
0,
0,
width,
height,
width,
height,
options
)
}
downsamplingRatio = options.downsamplingRatio

@@ -252,7 +285,10 @@ if (

while (sourceWidth * downsamplingRatio > destWidth) {
canvas.width = sourceWidth * downsamplingRatio
canvas.height = sourceHeight * downsamplingRatio
loadImage.renderImageToCanvas(
canvas = loadImage.createCanvas(
sourceWidth * downsamplingRatio,
sourceHeight * downsamplingRatio,
true
)
loadImage.drawImage(
img,
canvas,
img,
sourceX,

@@ -262,4 +298,2 @@ sourceY,

sourceHeight,
0,
0,
canvas.width,

@@ -274,36 +308,25 @@ canvas.height,

// eslint-disable-next-line no-param-reassign
img = document.createElement('canvas')
img.width = sourceWidth
img.height = sourceHeight
loadImage.renderImageToCanvas(
img,
canvas,
0,
0,
sourceWidth,
sourceHeight,
0,
0,
sourceWidth,
sourceHeight,
options
)
img = canvas
}
}
canvas.width = destWidth
canvas.height = destHeight
loadImage.transformCoordinates(canvas, options)
return loadImage.renderImageToCanvas(
canvas,
img,
sourceX,
sourceY,
sourceWidth,
sourceHeight,
0,
0,
destWidth,
destHeight,
options
)
canvas = loadImage.createCanvas(destWidth, destHeight)
loadImage.transformCoordinates(canvas, options, data)
if (pixelRatio > 1) {
canvas.style.width = canvas.width / pixelRatio + 'px'
canvas.style.height = canvas.height / pixelRatio + 'px'
}
loadImage
.drawImage(
img,
canvas,
sourceX,
sourceY,
sourceWidth,
sourceHeight,
destWidth,
destHeight,
options
)
.setTransform(1, 0, 0, 1, 0, 0) // reset to the identity matrix
return canvas
}

@@ -310,0 +333,0 @@ img.width = destWidth

2

js/load-image.all.min.js

@@ -1,2 +0,2 @@

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6:r.rotate(-.5*Math.PI),r.translate(-c,0);break;case 7:r.rotate(-.5*Math.PI),r.translate(-c,l),r.scale(1,-1);break;case 8:r.rotate(.5*Math.PI),r.translate(0,-l)}switch(b(a,n)&&(r.translate(c,l),r.rotate(Math.PI)),a){case 2:r.translate(o,0),r.scale(-1,1);break;case 3:r.translate(o,s),r.rotate(Math.PI);break;case 4:r.translate(0,s),r.scale(1,-1);break;case 5:r.rotate(.5*Math.PI),r.scale(1,-1);break;case 6:r.rotate(.5*Math.PI),r.translate(0,-s);break;case 7:r.rotate(.5*Math.PI),r.translate(o,-s),r.scale(-1,1);break;case 8:r.rotate(-.5*Math.PI),r.translate(-o,0)}}}}),function(e){"use strict";"function"==typeof define&&define.amd?define(["./load-image","./load-image-meta"],e):"object"==typeof module&&module.exports?e(require("./load-image"),require("./load-image-meta")):e(window.loadImage)}(function(n){"use strict";function h(e){e&&(Object.defineProperty(this,"map",{value:this.privateIFDs[e].map}),Object.defineProperty(this,"tags",{value:this.tags&&this.tags[e]||{}}))}h.prototype.map={Orientation:274,Thumbnail:513,Exif:34665,GPSInfo:34853,Interoperability:40965},h.prototype.privateIFDs={34665:{name:"Exif",map:{}},34853:{name:"GPSInfo",map:{}},40965:{name:"Interoperability",map:{}}},h.prototype.get=function(e){return this[e]||this[this.map[e]]};var g={1:{getValue:function(e,t){return e.getUint8(t)},size:1},2:{getValue:function(e,t){return String.fromCharCode(e.getUint8(t))},size:1,ascii:!0},3:{getValue:function(e,t,i){return e.getUint16(t,i)},size:2},4:{getValue:function(e,t,i){return e.getUint32(t,i)},size:4},5:{getValue:function(e,t,i){return e.getUint32(t,i)/e.getUint32(t+4,i)},size:8},9:{getValue:function(e,t,i){return e.getInt32(t,i)},size:4},10:{getValue:function(e,t,i){return e.getInt32(t,i)/e.getInt32(t+4,i)},size:8}};function m(e,t,i,a,n,r){var o,s,c,l,u,f,d=g[a];if(d){if(!((s=4<(o=d.size*n)?t+e.getUint32(i+8,r):i+8)+o>e.byteLength)){if(1===n)return d.getValue(e,s,r);for(c=[],l=0;l<n;l+=1)c[l]=d.getValue(e,s+l*d.size,r);if(d.ascii){for(u="",l=0;l<c.length&&"\0"!==(f=c[l]);l+=1)u+=f;return u}return c}console.log("Invalid Exif data: Invalid data offset.")}else console.log("Invalid Exif data: Invalid tag type.")}function p(e,t,i,a,n,r,o,s){var c,l,u,f,d,g;if(i+6>e.byteLength)console.log("Invalid Exif data: Invalid directory offset.");else{if(!((l=i+2+12*(c=e.getUint16(i,a)))+4>e.byteLength)){for(u=0;u<c;u+=1)f=i+2+12*u,d=e.getUint16(f,a),o&&!o[d]||s&&!0===s[d]||(g=m(e,t,f,e.getUint16(f+2,a),e.getUint32(f+4,a),a),n[d]=g,r&&(r[d]=f));return e.getUint32(l,a)}console.log("Invalid Exif data: Invalid directory size.")}}g[7]=g[1],n.parseExifData=function(l,e,t,u,i){if(!i.disableExif){var f,a,d=i.includeExifTags,g=i.excludeExifTags||{34665:{37500:!0}},m=e+10;if(1165519206===l.getUint32(e+4))if(m+8>l.byteLength)console.log("Invalid Exif data: Invalid segment size.");else if(0===l.getUint16(e+8)){switch(l.getUint16(m)){case 18761:f=!0;break;case 19789:f=!1;break;default:return void console.log("Invalid Exif data: Invalid byte alignment marker.")}42===l.getUint16(m+2,f)?(a=l.getUint32(m+4,f),u.exif=new h,i.disableExifOffsets||(u.exifOffsets=new h,u.exifTiffOffset=m,u.exifLittleEndian=f),(a=p(l,m,m+a,f,u.exif,u.exifOffsets,d,g))&&!i.disableExifThumbnail&&(a=p(l,m,m+a,f,u.exif,u.exifOffsets,d,g),u.exif[513]&&u.exif[514]&&(u.exif[513]=function(e,t,i){if(i&&!(t+i>e.byteLength))return new Blob([e.buffer.slice(t,t+i)],{type:"image/jpeg"});console.log("Invalid Exif data: Invalid thumbnail data.")}(l,m+u.exif[513],u.exif[514]))),Object.keys(u.exif.privateIFDs).forEach(function(e){var t,i,a,n,r,o,s,c;i=e,a=l,n=m,r=f,o=d,s=g,(c=(t=u).exif[i])&&(t.exif[i]=new h(i),t.exifOffsets&&(t.exifOffsets[i]=new h(i)),p(a,n,n+c,r,t.exif[i],t.exifOffsets&&t.exifOffsets[i],o&&o[i],s&&s[i]))})):console.log("Invalid Exif data: Missing TIFF marker.")}else console.log("Invalid Exif data: Missing byte alignment offset.")}},n.metaDataParsers.jpeg[65505].push(n.parseExifData),n.exifWriters={274:function(e,t,i){return new DataView(e,t.exifOffsets[274]+8,2).setUint16(0,i,t.exifLittleEndian),e}},n.writeExifData=function(e,t,i,a){n.exifWriters[t.exif.map[i]](e,t,a)},n.ExifMap=h}),function(e){"use strict";"function"==typeof define&&define.amd?define(["./load-image","./load-image-exif"],e):"object"==typeof module&&module.exports?e(require("./load-image"),require("./load-image-exif")):e(window.loadImage)}(function(e){"use strict";var n=e.ExifMap.prototype;n.tags={256:"ImageWidth",257:"ImageHeight",258:"BitsPerSample",259:"Compression",262:"PhotometricInterpretation",274:"Orientation",277:"SamplesPerPixel",284:"PlanarConfiguration",530:"YCbCrSubSampling",531:"YCbCrPositioning",282:"XResolution",283:"YResolution",296:"ResolutionUnit",273:"StripOffsets",278:"RowsPerStrip",279:"StripByteCounts",513:"JPEGInterchangeFormat",514:"JPEGInterchangeFormatLength",301:"TransferFunction",318:"WhitePoint",319:"PrimaryChromaticities",529:"YCbCrCoefficients",532:"ReferenceBlackWhite",306:"DateTime",270:"ImageDescription",271:"Make",272:"Model",305:"Software",315:"Artist",33432:"Copyright",34665:{36864:"ExifVersion",40960:"FlashpixVersion",40961:"ColorSpace",40962:"PixelXDimension",40963:"PixelYDimension",42240:"Gamma",37121:"ComponentsConfiguration",37122:"CompressedBitsPerPixel",37500:"MakerNote",37510:"UserComment",40964:"RelatedSoundFile",36867:"DateTimeOriginal",36868:"DateTimeDigitized",37520:"SubSecTime",37521:"SubSecTimeOriginal",37522:"SubSecTimeDigitized",33434:"ExposureTime",33437:"FNumber",34850:"ExposureProgram",34852:"SpectralSensitivity",34855:"PhotographicSensitivity",34856:"OECF",34864:"SensitivityType",34865:"StandardOutputSensitivity",34866:"RecommendedExposureIndex",34867:"ISOSpeed",34868:"ISOSpeedLatitudeyyy",34869:"ISOSpeedLatitudezzz",37377:"ShutterSpeedValue",37378:"ApertureValue",37379:"BrightnessValue",37380:"ExposureBias",37381:"MaxApertureValue",37382:"SubjectDistance",37383:"MeteringMode",37384:"LightSource",37385:"Flash",37396:"SubjectArea",37386:"FocalLength",41483:"FlashEnergy",41484:"SpatialFrequencyResponse",41486:"FocalPlaneXResolution",41487:"FocalPlaneYResolution",41488:"FocalPlaneResolutionUnit",41492:"SubjectLocation",41493:"ExposureIndex",41495:"SensingMethod",41728:"FileSource",41729:"SceneType",41730:"CFAPattern",41985:"CustomRendered",41986:"ExposureMode",41987:"WhiteBalance",41988:"DigitalZoomRatio",41989:"FocalLengthIn35mmFilm",41990:"SceneCaptureType",41991:"GainControl",41992:"Contrast",41993:"Saturation",41994:"Sharpness",41995:"DeviceSettingDescription",41996:"SubjectDistanceRange",42016:"ImageUniqueID",42032:"CameraOwnerName",42033:"BodySerialNumber",42034:"LensSpecification",42035:"LensMake",42036:"LensModel",42037:"LensSerialNumber"},34853:{0:"GPSVersionID",1:"GPSLatitudeRef",2:"GPSLatitude",3:"GPSLongitudeRef",4:"GPSLongitude",5:"GPSAltitudeRef",6:"GPSAltitude",7:"GPSTimeStamp",8:"GPSSatellites",9:"GPSStatus",10:"GPSMeasureMode",11:"GPSDOP",12:"GPSSpeedRef",13:"GPSSpeed",14:"GPSTrackRef",15:"GPSTrack",16:"GPSImgDirectionRef",17:"GPSImgDirection",18:"GPSMapDatum",19:"GPSDestLatitudeRef",20:"GPSDestLatitude",21:"GPSDestLongitudeRef",22:"GPSDestLongitude",23:"GPSDestBearingRef",24:"GPSDestBearing",25:"GPSDestDistanceRef",26:"GPSDestDistance",27:"GPSProcessingMethod",28:"GPSAreaInformation",29:"GPSDateStamp",30:"GPSDifferential",31:"GPSHPositioningError"},40965:{1:"InteroperabilityIndex"}},n.stringValues={ExposureProgram:{0:"Undefined",1:"Manual",2:"Normal program",3:"Aperture priority",4:"Shutter priority",5:"Creative program",6:"Action program",7:"Portrait mode",8:"Landscape mode"},MeteringMode:{0:"Unknown",1:"Average",2:"CenterWeightedAverage",3:"Spot",4:"MultiSpot",5:"Pattern",6:"Partial",255:"Other"},LightSource:{0:"Unknown",1:"Daylight",2:"Fluorescent",3:"Tungsten (incandescent light)",4:"Flash",9:"Fine weather",10:"Cloudy weather",11:"Shade",12:"Daylight fluorescent (D 5700 - 7100K)",13:"Day white fluorescent (N 4600 - 5400K)",14:"Cool white fluorescent (W 3900 - 4500K)",15:"White fluorescent (WW 3200 - 3700K)",17:"Standard light A",18:"Standard light B",19:"Standard light C",20:"D55",21:"D65",22:"D75",23:"D50",24:"ISO studio tungsten",255:"Other"},Flash:{0:"Flash did not fire",1:"Flash fired",5:"Strobe return light not detected",7:"Strobe return light detected",9:"Flash fired, compulsory flash mode",13:"Flash fired, compulsory flash mode, return light not detected",15:"Flash fired, compulsory flash mode, return light detected",16:"Flash did not fire, compulsory flash mode",24:"Flash did not fire, auto mode",25:"Flash fired, auto mode",29:"Flash fired, auto mode, return light not detected",31:"Flash fired, auto mode, return light detected",32:"No flash function",65:"Flash fired, red-eye reduction mode",69:"Flash fired, red-eye reduction mode, return light not detected",71:"Flash fired, red-eye reduction mode, return light detected",73:"Flash fired, compulsory flash mode, red-eye reduction mode",77:"Flash fired, compulsory flash mode, red-eye reduction mode, return light not detected",79:"Flash fired, compulsory flash mode, red-eye reduction mode, return light detected",89:"Flash fired, auto mode, red-eye reduction mode",93:"Flash fired, auto mode, return light not detected, red-eye reduction mode",95:"Flash fired, auto mode, return light detected, red-eye reduction mode"},SensingMethod:{1:"Undefined",2:"One-chip color area sensor",3:"Two-chip color area sensor",4:"Three-chip color area sensor",5:"Color sequential area sensor",7:"Trilinear sensor",8:"Color sequential linear sensor"},SceneCaptureType:{0:"Standard",1:"Landscape",2:"Portrait",3:"Night scene"},SceneType:{1:"Directly photographed"},CustomRendered:{0:"Normal process",1:"Custom process"},WhiteBalance:{0:"Auto white balance",1:"Manual white balance"},GainControl:{0:"None",1:"Low gain up",2:"High gain up",3:"Low gain down",4:"High gain down"},Contrast:{0:"Normal",1:"Soft",2:"Hard"},Saturation:{0:"Normal",1:"Low saturation",2:"High saturation"},Sharpness:{0:"Normal",1:"Soft",2:"Hard"},SubjectDistanceRange:{0:"Unknown",1:"Macro",2:"Close view",3:"Distant view"},FileSource:{3:"DSC"},ComponentsConfiguration:{0:"",1:"Y",2:"Cb",3:"Cr",4:"R",5:"G",6:"B"},Orientation:{1:"top-left",2:"top-right",3:"bottom-right",4:"bottom-left",5:"left-top",6:"right-top",7:"right-bottom",8:"left-bottom"}},n.getText=function(e){var t=this.get(e);switch(e){case"LightSource":case"Flash":case"MeteringMode":case"ExposureProgram":case"SensingMethod":case"SceneCaptureType":case"SceneType":case"CustomRendered":case"WhiteBalance":case"GainControl":case"Contrast":case"Saturation":case"Sharpness":case"SubjectDistanceRange":case"FileSource":case"Orientation":return this.stringValues[e][t];case"ExifVersion":case"FlashpixVersion":if(!t)return;return String.fromCharCode(t[0],t[1],t[2],t[3]);case"ComponentsConfiguration":if(!t)return;return this.stringValues[e][t[0]]+this.stringValues[e][t[1]]+this.stringValues[e][t[2]]+this.stringValues[e][t[3]];case"GPSVersionID":if(!t)return;return t[0]+"."+t[1]+"."+t[2]+"."+t[3]}return String(t)},n.getAll=function(){var e,t,i,a={};for(e in this)Object.prototype.hasOwnProperty.call(this,e)&&((t=this[e])&&t.getAll?a[this.privateIFDs[e].name]=t.getAll():(i=this.tags[e])&&(a[i]=this.getText(i)));return a},n.getName=function(e){var t=this.tags[e];return"object"==typeof t?this.privateIFDs[e].name:t},function(){var e,t,i,a=n.tags;for(e in a)if(Object.prototype.hasOwnProperty.call(a,e))if(t=n.privateIFDs[e])for(e in i=a[e])Object.prototype.hasOwnProperty.call(i,e)&&(t.map[i[e]]=Number(e));else n.map[a[e]]=Number(e)}()}),function(e){"use strict";"function"==typeof define&&define.amd?define(["./load-image","./load-image-meta"],e):"object"==typeof module&&module.exports?e(require("./load-image"),require("./load-image-meta")):e(window.loadImage)}(function(e){"use strict";function g(){}function m(e,t,i,a,n){return"binary"===t.types[e]?new Blob([i.buffer.slice(a,a+n)]):"Uint16"===t.types[e]?i.getUint16(a):function(e,t,i){for(var a="",n=t+i,r=t;r<n;r+=1)a+=String.fromCharCode(e.getUint8(r));return a}(i,a,n)}function h(e,t,i,a,n,r){for(var o,s,c,l,u,f=t+i,d=t;d<f;)28===e.getUint8(d)&&2===e.getUint8(d+1)&&(c=e.getUint8(d+2),n&&!n[c]||r&&r[c]||(s=e.getInt16(d+3),o=m(c,a.iptc,e,d+5,s),a.iptc[c]=(l=a.iptc[c],u=o,void 0===l?u:l instanceof Array?(l.push(u),l):[l,u]),a.iptcOffsets&&(a.iptcOffsets[c]=d))),d+=1}g.prototype.map={ObjectName:5},g.prototype.types={0:"Uint16",200:"Uint16",201:"Uint16",202:"binary"},g.prototype.get=function(e){return this[e]||this[this.map[e]]},e.parseIptcData=function(e,t,i,a,n){if(!n.disableIptc)for(var r,o,s,c,l=t+i;t+8<l;){if(c=t,943868237===(s=e).getUint32(c)&&1028===s.getUint16(c+4)){var u=(r=t,o=void 0,(o=e.getUint8(r+7))%2!=0&&(o+=1),0===o&&(o=4),o),f=t+8+u;if(l<f){console.log("Invalid IPTC data: Invalid segment offset.");break}var d=e.getUint16(t+6+u);if(l<t+d){console.log("Invalid IPTC data: Invalid segment size.");break}return a.iptc=new g,n.disableIptcOffsets||(a.iptcOffsets=new g),void h(e,f,d,a,n.includeIptcTags,n.excludeIptcTags||{202:!0})}t+=1}},e.metaDataParsers.jpeg[65517].push(e.parseIptcData),e.IptcMap=g}),function(e){"use strict";"function"==typeof define&&define.amd?define(["./load-image","./load-image-iptc"],e):"object"==typeof module&&module.exports?e(require("./load-image"),require("./load-image-iptc")):e(window.loadImage)}(function(e){"use strict";var a=e.IptcMap.prototype;a.tags={0:"ApplicationRecordVersion",3:"ObjectTypeReference",4:"ObjectAttributeReference",5:"ObjectName",7:"EditStatus",8:"EditorialUpdate",10:"Urgency",12:"SubjectReference",15:"Category",20:"SupplementalCategories",22:"FixtureIdentifier",25:"Keywords",26:"ContentLocationCode",27:"ContentLocationName",30:"ReleaseDate",35:"ReleaseTime",37:"ExpirationDate",38:"ExpirationTime",40:"SpecialInstructions",42:"ActionAdvised",45:"ReferenceService",47:"ReferenceDate",50:"ReferenceNumber",55:"DateCreated",60:"TimeCreated",62:"DigitalCreationDate",63:"DigitalCreationTime",65:"OriginatingProgram",70:"ProgramVersion",75:"ObjectCycle",80:"Byline",85:"BylineTitle",90:"City",92:"Sublocation",95:"State",100:"CountryCode",101:"Country",103:"OriginalTransmissionReference",105:"Headline",110:"Credit",115:"Source",116:"CopyrightNotice",118:"Contact",120:"Caption",121:"LocalCaption",122:"Writer",125:"RasterizedCaption",130:"ImageType",131:"ImageOrientation",135:"LanguageIdentifier",150:"AudioType",151:"AudioSamplingRate",152:"AudioSamplingResolution",153:"AudioDuration",154:"AudioOutcue",184:"JobID",185:"MasterDocumentID",186:"ShortDocumentID",187:"UniqueDocumentID",188:"OwnerID",200:"ObjectPreviewFileFormat",201:"ObjectPreviewFileVersion",202:"ObjectPreviewData",221:"Prefs",225:"ClassifyState",228:"SimilarityIndex",230:"DocumentNotes",231:"DocumentHistory",232:"ExifCameraInfo",255:"CatalogSets"},a.stringValues={10:{0:"0 (reserved)",1:"1 (most urgent)",2:"2",3:"3",4:"4",5:"5 (normal urgency)",6:"6",7:"7",8:"8 (least urgent)",9:"9 (user-defined priority)"},75:{a:"Morning",b:"Both Morning and Evening",p:"Evening"},131:{L:"Landscape",P:"Portrait",S:"Square"}},a.getText=function(e){var t=this.get(e),i=this.map[e],a=this.stringValues[i];return a?a[t]:String(t)},a.getAll=function(){var e,t,i={};for(e in this)Object.prototype.hasOwnProperty.call(this,e)&&(t=this.tags[e])&&(i[t]=this.getText(t));return i},a.getName=function(e){return this.tags[e]},function(){var e,t=a.tags,i=a.map||{};for(e in t)Object.prototype.hasOwnProperty.call(t,e)&&(i[t[e]]=Number(e))}()});
//# sourceMappingURL=load-image.all.min.js.map

6

js/load-image.js

@@ -57,3 +57,3 @@ /*

if (typeof file === 'string') {
if (loadImage.hasMetaOption(options)) {
if (loadImage.requiresMetaData(options)) {
loadImage.fetchBlob(file, fetchBlobCallback, options)

@@ -106,3 +106,3 @@ } else {

// Requires the load image meta extension to load meta data.
loadImage.hasMetaOption = function (options) {
loadImage.requiresMetaData = function (options) {
return options && options.meta

@@ -169,2 +169,4 @@ }

loadImage.global = $
if (typeof define === 'function' && define.amd) {

@@ -171,0 +173,0 @@ define(function () {

4

package.json
{
"name": "blueimp-load-image",
"version": "3.0.0",
"version": "4.0.0",
"title": "JavaScript Load Image",

@@ -38,3 +38,3 @@ "description": "JavaScript Load Image is a library to load images provided as File or Blob objects or via URL. It returns an optionally scaled and/or cropped HTML img or canvas element. It also provides methods to parse image meta data to extract IPTC and Exif tags as well as embedded thumbnail images and to restore the complete image header after resizing.",

"eslint-config-prettier": "6",
"eslint-plugin-jsdoc": "22",
"eslint-plugin-jsdoc": "24",
"eslint-plugin-prettier": "3",

@@ -41,0 +41,0 @@ "prettier": "2",

196

README.md

@@ -42,4 +42,10 @@ # JavaScript Load Image

- [Exif parser](#exif-parser)
- [Exif Thumbnail](#exif-thumbnail)
- [Exif IFD](#exif-ifd)
- [GPSInfo IFD](#gpsinfo-ifd)
- [Interoperability IFD](#interoperability-ifd)
- [Exif parser options](#exif-parser-options)
- [Exif writer](#exif-writer)
- [IPTC parser](#iptc-parser)
- [IPTC parser options](#iptc-parser-options)
- [License](#license)

@@ -244,3 +250,3 @@ - [Credits](#credits)

canvas.
Defaults to the source image width and requires `canvas: true`.
Defaults to the source image width and requires `canvas: true`.

@@ -251,3 +257,3 @@ ### sourceHeight

canvas.
Defaults to the source image height and requires `canvas: true`.
Defaults to the source image height and requires `canvas: true`.

@@ -257,3 +263,3 @@ ### top

The top margin of the sub-rectangle of the source image.
Defaults to `0` and requires `canvas: true`.
Defaults to `0` and requires `canvas: true`.

@@ -263,3 +269,3 @@ ### right

The right margin of the sub-rectangle of the source image.
Defaults to `0` and requires `canvas: true`.
Defaults to `0` and requires `canvas: true`.

@@ -269,3 +275,3 @@ ### bottom

The bottom margin of the sub-rectangle of the source image.
Defaults to `0` and requires `canvas: true`.
Defaults to `0` and requires `canvas: true`.

@@ -275,3 +281,3 @@ ### left

The left margin of the sub-rectangle of the source image.
Defaults to `0` and requires `canvas: true`.
Defaults to `0` and requires `canvas: true`.

@@ -281,3 +287,4 @@ ### contain

Scales the image up/down to contain it in the max dimensions if set to `true`.
This emulates the CSS feature [background-image: contain](https://developer.mozilla.org/en-US/docs/Web/Guide/CSS/Scaling_background_images#contain).
This emulates the CSS feature
[background-image: contain](https://developer.mozilla.org/en-US/docs/Web/Guide/CSS/Scaling_background_images#contain).

@@ -288,3 +295,4 @@ ### cover

if set to `true`.
This emulates the CSS feature [background-image: cover](https://developer.mozilla.org/en-US/docs/Web/Guide/CSS/Scaling_background_images#cover).
This emulates the CSS feature
[background-image: cover](https://developer.mozilla.org/en-US/docs/Web/Guide/CSS/Scaling_background_images#cover).

@@ -294,3 +302,3 @@ ### aspectRatio

Crops the image to the given aspect ratio (e.g. `16/9`).
Setting the `aspectRatio` also enables the `crop` option.
Setting the `aspectRatio` also enables the `crop` option.

@@ -301,5 +309,5 @@ ### pixelRatio

screen.
Should be set to `window.devicePixelRatio` unless the scaled image is not rendered
on screen.
Defaults to `1` and requires `canvas: true`.
Should be set to `window.devicePixelRatio` unless the scaled image is not
rendered on screen.
Defaults to `1` and requires `canvas: true`.

@@ -309,5 +317,5 @@ ### downsamplingRatio

Defines the ratio in which the image is downsampled.
By default, images are downsampled in one step. With a ratio of `0.5`, each step
By default, images are downsampled in one step. With a ratio of `0.5`, each step
scales the image to half the size, before reaching the target dimensions.
Requires `canvas: true`.
Requires `canvas: true`.

@@ -318,3 +326,3 @@ ### imageSmoothingEnabled

[disables image smoothing](https://developer.mozilla.org/en-US/docs/Web/API/CanvasRenderingContext2D/imageSmoothingEnabled).
Defaults to `true` and requires `canvas: true`.
Defaults to `true` and requires `canvas: true`.

@@ -325,4 +333,4 @@ ### imageSmoothingQuality

[quality of image smoothing](https://developer.mozilla.org/en-US/docs/Web/API/CanvasRenderingContext2D/imageSmoothingQuality).
Possible values: `'low'`, `'medium'`, `'high'`
Defaults to `'low'` and requires `canvas: true`.
Possible values: `'low'`, `'medium'`, `'high'`
Defaults to `'low'` and requires `canvas: true`.

@@ -332,3 +340,3 @@ ### crop

Crops the image to the maxWidth/maxHeight constraints if set to `true`.
Enabling the `crop` option also enables the `canvas` option.
Enabling the `crop` option also enables the `canvas` option.

@@ -339,17 +347,53 @@ ### orientation

an `integer` in the range of `1` to `8` or the boolean value `true`.
When set to `true`, it will set the orientation value based on the EXIF data of
When set to `true`, it will set the orientation value based on the EXIF data of
the image, which will be parsed automatically if the exif library is available.
Setting `orientation` to an integer in the range of `2` to `8` enables the
`canvas` option.
Setting `orientation` to `true` enables the `canvas` and `meta` options, unless
the browser supports automatic image orientation (see [browser support for image-orientation](https://caniuse.com/#feat=css-image-orientation)).
Exif orientation values to correctly display the letter F:
```
1 2
██████ ██████
██ ██
████ ████
██ ██
██ ██
3 4
██ ██
██ ██
████ ████
██ ██
██████ ██████
5 6
██████████ ██
██ ██ ██ ██
██ ██████████
7 8
██ ██████████
██ ██ ██ ██
██████████ ██
```
Setting `orientation` to `true` enables the `canvas` and `meta` options, unless
the browser supports automatic image orientation (see
[browser support for image-orientation](https://caniuse.com/#feat=css-image-orientation)).
Setting `orientation` to `1` enables the `canvas` and `meta` options if the
browser does support automatic image orientation (to allow reset of the
orientation).
Setting `orientation` to an integer in the range of `2` to `8` always enables
the `canvas` option and also enables the `meta` option if the browser supports
automatic image orientation (again to allow reset).
### meta
Automatically parses the image meta data if set to `true`.
The meta data is passed to the callback as part of the second argument.
If the file is given as URL and the browser supports the
[fetch API](https://developer.mozilla.org/en/docs/Web/API/Fetch_API), fetches
the file as Blob to be able to parse the meta data.
If meta data has been found, the data object passed as second argument to the
callback function has additional properties (see
[meta data parsing](#meta-data-parsing)).
If the file is given as URL and the browser supports the
[fetch API](https://developer.mozilla.org/en/docs/Web/API/Fetch_API) or the XHR
[responseType](https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest/responseType)
`blob`, fetches the file as Blob to be able to parse the meta data.

@@ -474,5 +518,5 @@ ### canvas

- `Thumbnail`
- `Exif`
- `GPSInfo`
- `Interoperability`
- `Exif` (see [Exif IFD](#exif-ifd))
- `GPSInfo` (see [GPSInfo IFD](#gpsinfo-ifd))
- `Interoperability` (see [Interoperability IFD](#interoperability-ifd))

@@ -487,3 +531,3 @@ If you also include the Load Image Exif Map library, additional tag mappings

```js
var flashText = data.exif.getText('Flash') // e.g.: 'Flash fired, auto mode',
var flashText = data.exif.getText('Orientation') // e.g. right-top for value 6

@@ -496,5 +540,86 @@ var name = data.exif.getName(0x0112) // Orientation

The Exif parser also adds additional options for the parseMetaData method, to
disable certain aspects of the parser:
#### Exif Thumbnail
Example code displaying a thumbnail image embedded into the Exif meta data:
```js
loadImage(
fileOrBlobOrUrl,
function (img, data) {
var thumbBlob = data.exif && data.exif.get('Thumbnail')
if (thumbBlob) {
loadImage(thumbBlob, function (thumbImage) {
document.body.appendChild(thumbImage)
})
}
},
{ meta: true }
)
```
#### Exif IFD
Example code displaying data from the Exif IFD (Image File Directory) that
contains Exif specified TIFF tags:
```js
loadImage(
fileOrBlobOrUrl,
function (img, data) {
var exifIFD = data.exif && data.exif.get('Exif')
if (exifIFD) {
// Map of all Exif IFD tags with their mapped names/text as keys/values:
console.log(exifIFD.getAll())
// A specific Exif IFD tag value:
console.log(exifIFD.get('UserComment'))
}
},
{ meta: true }
)
```
#### GPSInfo IFD
Example code displaying data from the Exif IFD (Image File Directory) that
contains [GPS](https://en.wikipedia.org/wiki/Global_Positioning_System) info:
```js
loadImage(
fileOrBlobOrUrl,
function (img, data) {
var gpsInfo = data.exif && data.exif.get('GPSInfo')
if (gpsInfo) {
// Map of all GPSInfo tags with their mapped names/text as keys/values:
console.log(gpsInfo.getAll())
// A specific GPSInfo tag value:
console.log(gpsInfo.get('GPSLatitude'))
}
},
{ meta: true }
)
```
#### Interoperability IFD
Example code displaying data from the Exif IFD (Image File Directory) that
contains Interoperability data:
```js
loadImage(
fileOrBlobOrUrl,
function (img, data) {
var interoperabilityData = data.exif && data.exif.get('Interoperability')
if (interoperabilityData) {
// The InteroperabilityIndex tag value:
console.log(interoperabilityData.get('InteroperabilityIndex'))
}
},
{ meta: true }
)
```
#### Exif parser options
The Exif parser adds additional options:
- `disableExif`: Disables Exif parsing when `true`.

@@ -615,5 +740,6 @@ - `disableExifThumbnail`: Disables parsing of Thumbnail data when `true`.

The IPTC parser also adds additional options for the parseMetaData method, to
disable certain aspects of the parser:
#### IPTC parser options
The IPTC parser adds additional options:
- `disableIptc`: Disables IPTC parsing when true.

@@ -620,0 +746,0 @@ - `disableIptcOffsets`: Disables storing IPTC tag offsets when `true`.

js/load-image.all.min.js.map

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