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Add option for resizing image to crop box's longest side (on image load) #88

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Add option for resizing image to crop box's longest side (on image load) #88

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5fa68e8
Add option for resizing image to crop box's longest side (on image load)
cornellsteven Mar 26, 2015
ae5424e
Fix croppic for jQuery 3
cornellsteven Aug 12, 2019
b186d71
Include option to fill cropbox on image select
cornellsteven Oct 9, 2019
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1 change: 1 addition & 0 deletions croppic-min.js
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103 changes: 100 additions & 3 deletions croppic.js
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Original file line number Diff line number Diff line change
Expand Up @@ -35,6 +35,8 @@
loadPicture:'',
onReset: null,
enableMousescroll: false,
fitToLongest: false,
fitToCover: false,

//callbacks
onBeforeImgUpload: null,
Expand Down Expand Up @@ -238,7 +240,7 @@

that.obj.append(img);

img.load(function(){
img.on('load', function(){
that.initCropper();
that.hideLoader();
if (that.options.onAfterImgUpload) that.options.onAfterImgUpload.call(that);
Expand Down Expand Up @@ -271,7 +273,7 @@

var img =$('<img src="'+ that.options.loadPicture +'">');
that.obj.append(img);
img.load(function() {
img.on('load', function() {
that.imgInitW = that.imgW = this.width;
that.imgInitH = that.imgH = this.height;
that.initCropper();
Expand Down Expand Up @@ -355,6 +357,101 @@
that.img.css({'left': -(that.imgW -that.objW)/2, 'top': -(that.imgH -that.objH)/2, 'position':'relative'});
if(that.options.imgEyecandy){ that.imgEyecandy.css({'left': -(that.imgW -that.objW)/2, 'top': -(that.imgH -that.objH)/2, 'position':'relative'}); }

// Resize image to fit object's longest side
var resize = function(newTop, newLeft, newWidth, newHeight) {
that.imgW = newWidth;
that.img.width(newWidth);

that.imgH = newHeight;
that.img.height(newHeight);

that.img.css({
'top': newTop,
'left': newLeft
});

if (that.options.imgEyecandy){
that.imgEyecandy.width(newWidth);
that.imgEyecandy.height(newHeight);
that.imgEyecandy.css({
'top': newTop,
'left': newLeft
});
}
};

var resizeToWidth = function() {
var ratio = (that.imgW / that.imgH);
var newWidth = that.objW;
var newHeight = (newWidth / ratio);

var newTop = that.objH - (newHeight / 2);
var newLeft = 0;

newTop = (newTop > 0 ? 0 : newTop);

resize(newTop, newLeft, newWidth, newHeight);
};

var resizeToHeight = function() {
var newHeight = that.objH;
var ratio = (newHeight / that.imgH);
var newWidth = (that.imgW * ratio);

var newTop = 0;
var newLeft = (that.objW / 2) - (newWidth / 2);

newLeft = (newLeft < 0 ? 0 : newLeft);

resize(newTop, newLeft, newWidth, newHeight);
};

var resizeToCover = function() {
var sourceWidth = that.imgW;
var sourceHeight = that.imgH;
var destWidth = that.objW;
var destHeight = that.objH;

var result = {
x: 0,
y: 0,
width: destWidth,
height: destHeight
};

var scaleX = (that.objW / that.imgW);
var scaleY = (that.objH / that.imgH);
var scale = ((scaleX > scaleY) ? scaleX : scaleY);

sourceWidth *= scale;
sourceHeight *= scale;

result.width = Math.round(sourceWidth);
result.height = Math.round(sourceHeight);

result.x = Math.round((destWidth / 2) - (sourceWidth / 2));
result.y = Math.round((destHeight / 2) - (sourceHeight / 2));

resize(
result.y,
result.x,
result.width,
result.height
);
};

if (that.options.fitToCover) {
that.options.fitToLongest = false;
resizeToCover();
}

if (that.options.fitToLongest) {
if (that.objW >= that.objH) {
resizeToWidth();
} else {
resizeToHeight();
}
}
},

createCropControls: function(){
Expand Down Expand Up @@ -677,4 +774,4 @@
that.obj.html('');
}
};
})(window, document);
})(window, document);
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