DecSoft Support - Preview a image and get his dimensions

Preview a image and get his dimensions

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John Clarke

I am using the File Object to load an image into an Image Object. If I use

views.view1.file1.value[0].name

I get the name of the file excluding the path. When I look at https://cordova.apache.org/docs/en/3.0.0/cordova/file/fileobj/fileobj.html I get the impression that I should be using fullPath. I presume that I need to load the file into my image using :

splatIMG.url = ...

is that correct ?

DecSoft

Hello John,

If what you wanted is to shown the choosed image (to preview it before upload, for example), just put the below code in the Change event of the Input File control:

var
  reader = new FileReader();

reader.onload = function(e) {
  views.view1.image1.url = e.target.result;
}

reader.readAsDataURL(views.view1.file1.value[0]);

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John Clarke

If I load an image can I get the Width and Height of the Image ? If so how ?

DecSoft

Hello John,

Yes; we can use the same Change event of the Input File control. Take a look bellow, we do both things: show the image in an Image control, and, get the choosed image dimensions:

var
  reader = new FileReader();

reader.onload = function(e) {

  var
    img = new Image();

  img.onload = function () {
    alert(this.width + 'x' + this.height);
  };

  img.src = e.target.result;

  views.view1.image1.url = e.target.result;
}

reader.readAsDataURL(views.view1.file1.value[0]);

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John Clarke

Thank you for your help regarding this matter.

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