Skip to content

Instantly share code, notes, and snippets.

@williampaulo

williampaulo/app.js

Forked from VMBindraban/app.js
Created March 15, 2017 18:55
Show Gist options

  • Select an option

    Learn more about clone URLs
  • Save williampaulo/e5f7d64e91ed76e3a369343848d282d9 to your computer and use it in GitHub Desktop.

Select an option

Learn more about clone URLs
Save williampaulo/e5f7d64e91ed76e3a369343848d282d9 to your computer and use it in GitHub Desktop.
Download ZIP

Revisions

  1. @VMBindraban VMBindraban created this gist Dec 9, 2015.
    56 changes: 56 additions & 0 deletions app.js
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,56 @@
    var $uplImageBtn = $('.pui--ev-upload'),
    $uplContainer = $('#uplProfileImg'),
    $previewImg = $('.macc--s-pimg img');

    $uplImageBtn.click(function() {
    $uplContainer.trigger('click');
    });

    $uplContainer.on('change', function() {
    if (!this.files && !this.files[0]) {
    return;
    }

    var reader = new FileReader(),
    tmpImg = '';

    reader.onload = function (e) {
    $previewImg.attr('src', snapshotResize(e.target.result, 380, 285));
    }

    reader.readAsDataURL(this.files[0]);
    });

    function snapshotResize (srcData, width, height) {
    var imageObj = new Image(),
    canvas = document.createElement("canvas"),
    ctx = canvas.getContext('2d'),
    xStart = 0,
    yStart = 0,
    aspectRadio,
    newWidth,
    newHeight;

    imageObj.src = srcData;
    canvas.width = width;
    canvas.height = height;

    aspectRadio = imageObj.height / imageObj.width;

    if(imageObj.height < imageObj.width) {
    //horizontal
    aspectRadio = imageObj.width / imageObj.height;
    newHeight = height,
    newWidth = aspectRadio * height;
    xStart = -(newWidth - width) / 2;
    } else {
    //vertical
    newWidth = width,
    newHeight = aspectRadio * width;
    yStart = -(newHeight - height) / 2;
    }

    ctx.drawImage(imageObj, xStart, yStart, newWidth, newHeight);

    return canvas.toDataURL("image/jpeg", 0.75);
    }