Pan to selection script

[Ghoul Fool]

Just want to check with fellow scripters than panning (as in using the hand tool) to move around a zoomed in large image is NOT possible with scripting? 

I want to zoom in on a large image and then be able to pan to a selection  - but I don't think there is anything that can help me on this one. Even the navigator doesn't highlight selections.

So go from :

to 

Using a zoomed in version of the Mona Lisa an an example

[Stephen Marsh]

@Ghoul Fool 

So you are already viewing one area of the image, say the upper left at a given zoom level, and there is a selection elsewhere in the image that you wish to zoom to?

If so, this can be hacked by making a new layer with content, such as filling the selection or creating a fill layer with the selection active and then View > Fit Layer(s) on Screen:

app.runMenuItem(stringIDToTypeID('fitLayersOnScreen'));

You could then add a zoom out as required:

app.runMenuItem(stringIDToTypeID('zoomOut'));

And delete the new active layer as it has served its purpose.

[Ghoul Fool]

Stephen, that's simple and elegant!

...but I'm trying to avoid any zooming/changing magnification levels.

[Stephen Marsh]

Stephen, that's simple and elegant!

...but I'm trying to avoid any zooming/changing magnification levels.

By Ghoul Fool

Hah, I'd forgotten about that discussion!

[Ghoul Fool]

😄

[c.pfaffenbichler]

https://community.adobe.com/t5/photoshop-ecosystem-discussions/enter-a-specific-coordinate-in-photos...

[c.pfaffenbichler · Accepted solution]

The code in the linked thread should preset a dialog for numeric entry but you should be able to use other input (like the active layer’s bounds/center). 

[Ghoul Fool]

Oooh! Things. Just. Got. Interesting.

[Ghoul Fool]

So if anyone's interested in order to make my version of teh script work I just removed the UI and added a function to get the selection bounds centre:

// get window values;
var r = new ActionReference();
r.putProperty(stringIDToTypeID("property"), stringIDToTypeID("viewInfo"));    
r.putEnumerated(charIDToTypeID("Dcmn"), charIDToTypeID("Ordn"), charIDToTypeID("Trgt"));    
var bounds = executeActionGet(r).getObjectValue(stringIDToTypeID("viewInfo")).getObjectValue(stringIDToTypeID("activeView")).getObjectValue(stringIDToTypeID("globalBounds"));
var theLeft = bounds.getUnitDoubleValue(stringIDToTypeID("left"));
var theTop = bounds.getUnitDoubleValue(stringIDToTypeID("top"));
var theRight = bounds.getUnitDoubleValue(stringIDToTypeID("right"));
var theBottom = bounds.getUnitDoubleValue(stringIDToTypeID("bottom"));
var windowW = theRight - theLeft -16;
var windowH = theBottom - theTop - 16;

// get zoom;
var theZoom = getActiveDocumentZoom();


// set potision on selection
var sb = get_selection_bounds_centre();
if (sb != undefined)
{
    var posX = sb[0]*(-1)*theZoom/100+windowW/2;
    var posY = sb[1]*(-1)*theZoom/100+windowH/2;

    set_doc_position(posX, posY);
}




//  by r-bin;
function set_doc_position(x, y)  
{  
  try
  {  
    var r = new ActionReference();    
    r.putProperty(stringIDToTypeID("property"), stringIDToTypeID("viewInfo"));    
    r.putEnumerated(stringIDToTypeID("document"), stringIDToTypeID("ordinal"), stringIDToTypeID("targetEnum"));    
    var bounds = executeActionGet(r).getObjectValue(stringIDToTypeID("viewInfo")).getObjectValue(stringIDToTypeID("activeView")).getObjectValue(stringIDToTypeID("globalBounds"));          
    var b = new Array();
    b[0] = bounds.getUnitDoubleValue(stringIDToTypeID("left"));          
    b[1] = bounds.getUnitDoubleValue(stringIDToTypeID("top"));  
    b[2] = bounds.getUnitDoubleValue(stringIDToTypeID("right"));  
    b[3] = bounds.getUnitDoubleValue(stringIDToTypeID("bottom"));  

    var dx = 8; // what is it?  
    var dy = 8; // what is it?  

    x = (b[2]-b[0])/2 - x - dx;  
    y = (b[3]-b[1])/2 - y - dy;  

    var d = new ActionDescriptor();    
    var r = new ActionReference();    
    r.putProperty(stringIDToTypeID("property"), stringIDToTypeID("center"));    
    r.putEnumerated(stringIDToTypeID("document"), stringIDToTypeID("ordinal"), stringIDToTypeID("targetEnum"));    
    d.putReference(stringIDToTypeID("null"), r);    

    var d1 = new ActionDescriptor();    

    d1.putUnitDouble(stringIDToTypeID("horizontal"), stringIDToTypeID("distanceUnit"), x);  
    d1.putUnitDouble(stringIDToTypeID("vertical"),   stringIDToTypeID("distanceUnit"), y);  

    d.putObject(stringIDToTypeID("to"), stringIDToTypeID("center"), d1);    
    executeAction(stringIDToTypeID("set"), d, DialogModes.NO);    
  }  
  catch (eeek)
  { 
    throw(eeek); 
  }  
};

// by mike hale;
function getActiveDocumentZoom()
{
   var ref;
   ref = new ActionReference();
   ref.putProperty( charIDToTypeID( "Prpr" ),charIDToTypeID('Zm  '));
   ref.putEnumerated(charIDToTypeID('Dcmn'), charIDToTypeID( "Ordn" ), charIDToTypeID( "Trgt" ) );
   return (executeActionGet(ref).getUnitDoubleValue (charIDToTypeID('Zm  ')))*100;
};


// function GET SELECTION BOUNDS()
// ----------------------------------------------------------------
function get_selection_bounds_centre()
{
  try
  {
    var l = parseFloat(app.activeDocument.selection.bounds[0]);
    var t = parseFloat(app.activeDocument.selection.bounds[1]);
    var r = parseFloat(app.activeDocument.selection.bounds[2]);
    var b = parseFloat(app.activeDocument.selection.bounds[3]);

    var selectionBounds = [parseInt(r -((r-l)*0.5)),parseInt(t-((t-b)*.5))]; // centre x, centre y
    return selectionBounds;
  }

  catch(eek)
  {
    return undefined;
  }
}

No more zooming in and out for me!! 😄