Displaying Image in ScriptUI (Bridge?)

[undavide]

Hello,
I've run into the ScriptUI limitation, in terms of image data, when displaying an Image object in a Window:

Code: Select allvar w = new Window ("dialog", "Flower");
var flower = w.add ("image", undefined, File ("~/Desktop/flower.jpg"));
w.show();

The above works as long as the image is JPG or PNG.
I was wondering whether there's a way to display an image thumb (which is what I actually need) of other formats with Bridge scripting called via bridgeTalk - I'm not too much into Bridge things...
Any suggestion is appreciated!

By the way, while looking around for a solution to my problem I've found this Marc Autret Image prototype hack that's helpful to scale proportionally Images - it's quite useful imho so I might share it here

Code: Select allImage.prototype.onDraw = function() { // written by Marc Autret
    // "this" is the container; "this.image" is the graphic
    if( !this.image ) return;
    var WH = this.size,
        wh = this.image.size,
        k = Math.min(WH[0] / wh[0], WH[1] / wh[1]),
        xy;
    // Resize proportionally:
    wh = [k * wh[0], k * wh[1]];
    // Center:
    xy = [(WH[0] - wh[0]) / 2, (WH[1] - wh[1]) / 2];
    this.graphics.drawImage(this.image, xy[0], xy[1], wh[0], wh[1]);
    WH = wh = xy = null;
}

Thanks!
Davide Barranca
http://www.davidebarranca.com

[Mike Hale]

Paul has posted some scripts that use Bridge to generate thumbnails. Here is some code from my code lib that may save you a search. Note I guess it really should check that Bridge is running and not busy.
Code: Select all// adapted from Paul Riggott
var previewFile = new File(Folder.temp+'/ScriptUI.jpg');
if( previewFile.exists ) previewFile.remove();
var success = createPreview( '~/Desktop/Untitled1.psd');// returns true if preview file is created
if( success ) app.load( previewFile );
function createPreview( image ){
     var fileName = new File( image );
     var preveiwExists = undefined;
     var res = undefined;
     var bt = new BridgeTalk;
     bt.target = "bridge";
     var myScript = ("var ftn = " + psRemote.toSource() + "; ftn("+fileName.toSource()+");");
     bt.body = myScript;
     bt.onResult = function( inBT ) {myReturnValue(inBT.body); }
     bt.send(500);
     return preveiwExists;
     
     function psRemote( sourceImage ){
          var f = new File(Folder.temp+ "/scriptUI.jpg");
          var Thumb1 = new Thumbnail( sourceImage );
          app.synchronousMode = true;
          Thumb1.core.preview.preview;
          app.synchronousMode = false;
          var md = Thumb1.synchronousMetadata;
          md.namespace = "http://ns.adobe.com/tiff/1.0/";
          var orientation = md.Orientation.replace(/(\w+)(\s+)(.)(\d+)(.)/,"$3$4");
          orientation = orientation.replace(/°/,'');
          orientation = orientation.replace(/Rotate/,'');
          if(orientation == 'Normal') orientation =0;
          var bm = undefined;
          bm = Thumb1.core.preview.preview;
          if(bm.width != undefined) bm = bm.rotate(orientation);
         bm = bm.resize(100,BitmapData.bicubicSharper);/* long side in pixels */
          bm.exportTo( f,80 );/* jpeg format file, jpeg quality 0-100 */
          return f.exists;
     };
     function myReturnValue(str){
          res = str;
          preveiwExists = str;
     };
};

[undavide]

Hello Mike,
do you happen to know if it's possible to grab the BitmapData of the Thumbnail.core.preview.preview (or better the Thumbnail.core.thumbnail.thumbnail which is enough for my purposes - a 100x100px image) and send it directly to an 'image' ScriptUI component without resorting to save a temp JPG on disk? I guess it will be way much faster.
I've tried building it more or less this way:

Code: Select allw.img.image = ScriptUI.newImage(Thumb1.core.preview.preview)

but it failed.
By the way, in the code you've posted I've seen (psRemote) that there's this very invocation:

Code: Select allThumb1.core.preview.preview;

without assigning it to a variable - do you know why? Is it a way to build the object?
Thank you!

Davide

[Mike Hale]

I don't know of a way to avoid writing the temp image file. As far as I know ScriptUI only accepts file or resource objects. You are trying to use a Bridge bitmap object.

The code I posted was from Paul so I may be wrong here but I think that the first use of the line
Code: Select allThumb1.core.preview.preview;is to force the thumbnail creation in case Bridge has not already made one.