🚀 go-pugleaf

> How to load color table in a indexed mode file??

I just converted some code that I have to work without the rest of my libs. It's 
untested, but the conversion was easy as was adding the 'apply' method.

It's fairly simple to use:
     var clrTbl = new ColorTable();
     clrTbl.apply("~/someTable.act");

It has a builtin assumption that the color table is always exactly 256 colors in 
size, which is probably fine.

-X


//
// ColorTable
//   This class reads and writes color table files from disk.
//   This assumes that the index color table is (at most) 256 colors long.
//   If the file contains less, toString will pad with 0,0,0 entries.
//
// $Id: ColorTable.jsx,v 1.3 2009/02/23 16:11:49 anonymous Exp $
// Copyright: (c)2007, xbytor
// License: http://creativecommons.org/licenses/LGPL/2.1
// Contact: xbytor@gmail.com
//
//

//============================= ColorTable ====================================

ColorTable = function() {
   var self = this;

   self.file      = null;
   self.colors = [];
};
ColorTable.RcsId = "$Id: ColorTable.jsx,v 1.3 2009/02/23 16:11:49 anonymous Exp $";

ColorTable.prototype.typename = "ColorTable";

//
// toString always returns 256 colors
//
ColorTable.prototype.toString = function() {
   var self = this;
   var str = '';

   if (!self.colors || self.colors.length == 0) {
     return undefined;
   }

   for (var i = 0; i < 256; i++) {
     if (i >= self.colors.length) {
       str += "0,0,0\n";
     } else {
       var sc = self.colors[i];
       var rgb = sc.rgb;
       str += rgb.red + ',' + rgb.green + ',' + rgb.blue + '\n';
     }
   };

   return str;
};

ColorTable.prototype.read = function(str) {
   var self = this;

   self.colors = [];

   for (var i = 0; i < 256; i++) {
     var sc = new SolidColor();
     var rgb = sc.rgb;

     rgb.red = str.readByte();
     rgb.green = str.readByte();
     rgb.blue = str.readByte();
     self.colors.push(sc);

     if (str.eof()) {
       break;
     }
   }
};

ColorTable.prototype.readFromFile = function(fptr) {
   var self = this;

   if (fptr.constructor == String) {
     fptr = File(fptr);
   }

   self.file = fptr;

   file.open("r");
   file.encoding = 'BINARY';
   var s = file.read();
   file.close();

   var str = {
     str: s,
     ptr: 0
   }

   str.readByte = function() {
     var self = this;
     if (self.ptr >= self.str.length) {
       return -1;
     }
     return self.str.charCodeAt(self.ptr++);
   }

   str.eof = function() {
     this.ptr = this.ptr.length;
   }

   self.read(str);
};

ColorTable.prototype.apply = function(fptr) {
   var self = this;

   self.readFromFile(fptr);
   var desc  = new ActionDescriptor();
   var ref = new ActionReference();
   ref.putProperty(cTID('Clr '), cTID('ClrT'));
   desc.putReference(cTID('null'), ref);

   var list = new ActionList();

   for (var i = 0; i < colors.length; i++) {
     var color = colors[i];
     var cdesc = new ActionDescriptor();
     cdesc.putDouble(cTID('Rd  '), color.rgb.red);
     cdesc.putDouble(cTID('Grn '), color.rgb.green);
     cdesc.putDouble(cTID('Bl  '), color.rgb.blue);
     list.putObject(cTID('RGBC'), cdesc);
   }

   desc.putList(cTID('T   '), list);
   return executeAction(cTID('setd'), desc, DialogModes.NO);
};


/*
Sample Usage

var clrTbl = new ColorTable();
clrTbl.apply("~/someTable.act");

//include "xlib/stdlib.js"
//include "xlib/Stream.js"

var clrTbl = new ColorTable();
clrTbl.readFromFile("~/someTable.act");
var str = clrTbl.toString();
alert(str);

*/


"ColorTable.jsx";
// EOF

hi xbytor,

thanks for your response, but I didn't quiet get it.

When i run it, following error occurs:

"ColorTable does not have a constructor".

following is the script i have writted:

------

var clrTbl = new ColorTable();
   clrTbl.apply("/Users/robin/Desktop/AC5.act");

//============================= ColorTable ====================================

ColorTable = function() {
 var self = this;

self.file = null;
 self.colors = [];
};
ColorTable.RcsId = "$Id: ColorTable.jsx,v 1.3 2009/02/23 16:11:49 anonymous Exp $";

ColorTable.prototype.typename = "ColorTable";

//
// toString always returns 256 colors
//
ColorTable.prototype.toString = function() {
 var self = this;
 var str = '';

if (!self.colors || self.colors.length == 0) {
   return undefined;
 }

for (var i = 0; i < 256; i++) { if (i >= self.colors.length) {
     str += "0,0,0\n";
   } else {
     var sc = self.colors[i];
     var rgb = sc.rgb;
     str += rgb.red + ',' + rgb.green + ',' + rgb.blue + '\n';
   }
 };

return str;
};

ColorTable.prototype.read = function(str) {
 var self = this;

self.colors = [];

for (var i = 0; i < 256; i++) { var sc = new SolidColor(); var rgb = sc.rgb;

rgb.red = str.readByte();
   rgb.green = str.readByte();
   rgb.blue = str.readByte();
   self.colors.push(sc);

if (str.eof()) {
     break;
   }
 }
};

ColorTable.prototype.readFromFile = function(fptr) {
 var self = this;

if (fptr.constructor == String) {
   fptr = File(fptr);
 }

self.file = fptr;

file.open("r");
 file.encoding = 'BINARY';
 var s = file.read();
 file.close();

var str = {
   str: s,
   ptr: 0
 }

str.readByte = function() {
   var self = this;
   if (self.ptr >= self.str.length) {
     return -1;
   }
   return self.str.charCodeAt(self.ptr++);
 }

str.eof = function() {
   this.ptr = this.ptr.length;
 }

self.read(str);
};

ColorTable.prototype.apply = function(fptr) {
 var self = this;

self.readFromFile(fptr);
 var desc = new ActionDescriptor();
 var ref = new ActionReference();
 ref.putProperty(cTID('Clr '), cTID('ClrT'));
 desc.putReference(cTID('null'), ref);

var list = new ActionList();

for (var i = 0; i < colors.length; i++) { var color = colors[i]; var cdesc = new ActionDescriptor(); cdesc.putDouble(cTID('Rd '), color.rgb.red); cdesc.putDouble(cTID('Grn '), color.rgb.green); cdesc.putDouble(cTID('Bl '), color.rgb.blue); list.putObject(cTID('RGBC'), cdesc); }

desc.putList(cTID('T '), list);
 return executeAction(cTID('setd'), desc, DialogModes.NO);
};

/*
Sample Usage

var clrTbl = new ColorTable();
clrTbl.apply("~/someTable.act");

//include "xlib/stdlib.js"
//include "xlib/Stream.js"

var clrTbl = new ColorTable();
clrTbl.readFromFile("~/someTable.act");
var str = clrTbl.toString();
alert(str);

* /

"ColorTable.jsx";
// EOF

-------

Also, please tell where do I locate these files on mac: "//include "xlib/stdlib.js"
//include "xlib/Stream.js"".

hi xbytor,

thanks for your response, but I didn't quiet get it.

When i run it, following error occurs:

"ColorTable does not have a constructor".

following is the script i have writted:

------

var clrTbl = new ColorTable();
   clrTbl.apply("/Users/robin/Desktop/AC5.act");

//============================= ColorTable ====================================

ColorTable = function() {
 var self = this;

self.file = null;
 self.colors = [];
};
ColorTable.RcsId = "$Id: ColorTable.jsx,v 1.3 2009/02/23 16:11:49 anonymous Exp $";

ColorTable.prototype.typename = "ColorTable";

//
// toString always returns 256 colors
//
ColorTable.prototype.toString = function() {
 var self = this;
 var str = '';

if (!self.colors || self.colors.length == 0) {
   return undefined;
 }

for (var i = 0; i < 256; i++) { if (i >= self.colors.length) {
     str += "0,0,0\n";
   } else {
     var sc = self.colors[i];
     var rgb = sc.rgb;
     str += rgb.red + ',' + rgb.green + ',' + rgb.blue + '\n';
   }
 };

return str;
};

ColorTable.prototype.read = function(str) {
 var self = this;

self.colors = [];

for (var i = 0; i < 256; i++) { var sc = new SolidColor(); var rgb = sc.rgb;

rgb.red = str.readByte();
   rgb.green = str.readByte();
   rgb.blue = str.readByte();
   self.colors.push(sc);

if (str.eof()) {
     break;
   }
 }
};

ColorTable.prototype.readFromFile = function(fptr) {
 var self = this;

if (fptr.constructor == String) {
   fptr = File(fptr);
 }

self.file = fptr;

file.open("r");
 file.encoding = 'BINARY';
 var s = file.read();
 file.close();

var str = {
   str: s,
   ptr: 0
 }

str.readByte = function() {
   var self = this;
   if (self.ptr >= self.str.length) {
     return -1;
   }
   return self.str.charCodeAt(self.ptr++);
 }

str.eof = function() {
   this.ptr = this.ptr.length;
 }

self.read(str);
};

ColorTable.prototype.apply = function(fptr) {
 var self = this;

self.readFromFile(fptr);
 var desc = new ActionDescriptor();
 var ref = new ActionReference();
 ref.putProperty(cTID('Clr '), cTID('ClrT'));
 desc.putReference(cTID('null'), ref);

var list = new ActionList();

for (var i = 0; i < colors.length; i++) { var color = colors[i]; var cdesc = new ActionDescriptor(); cdesc.putDouble(cTID('Rd '), color.rgb.red); cdesc.putDouble(cTID('Grn '), color.rgb.green); cdesc.putDouble(cTID('Bl '), color.rgb.blue); list.putObject(cTID('RGBC'), cdesc); }

desc.putList(cTID('T '), list);
 return executeAction(cTID('setd'), desc, DialogModes.NO);
};

/*
Sample Usage

var clrTbl = new ColorTable();
clrTbl.apply("~/someTable.act");

//include "xlib/stdlib.js"
//include "xlib/Stream.js"

var clrTbl = new ColorTable();
clrTbl.readFromFile("~/someTable.act");
var str = clrTbl.toString();
alert(str);

* /

"ColorTable.jsx";
// EOF

-------

Also, please tell where do I locate these files on mac: "//include "xlib/stdlib.js"
//include "xlib/Stream.js"".

Robin_Massey@adobeforums.com wrote:
> When i run it, following error occurs:
> 
> "ColorTable does not have a constructor".

Try moving this bit of code from the beginning of the file to the end.

> var clrTbl = new ColorTable();
>    clrTbl.apply("/Users/robin/Desktop/AC5.act");
> 


> 
> Also, please tell where do I locate these files on mac: "//include "xlib/stdlib.js"
> //include "xlib/Stream.js"".

You don't need them. I removed the dependencies on these two file from the 
script. Those lines of code do nothing now.

They are a part of my xtools package that can be found at 
ps-scripts.sourceforge.net. There is a massive amount of code out there. That's 
where the original implementation of the ColorTable script can be found.

-X

Thanxs again xbytor,
but it's still not working for me,
it shows an error "file is undefined" in the below code line:
file.open("r");

It would be a really great help if you define where should i change/apply path of the color table in the script or what changes should be done before i run it on my mac.

Rgs
Robin

Hi xbytor,

just wondering if you get a chance to look into this.

rgs
Robin

> it shows an error "file is undefined" in the below code line:
> file.open("r");

Without looking at the code, the variable 'file' was either not assigned a valid 
value or was not initialized at all. Or, it was misspelled, which I doubt. Put a 
breakpoint on that line of code in ESTK and run the script. When the script 
stops at that line, look at the 'Data Browser' panel to see if there are any 
'File' objects in scope. If there are, 'file' should probably have been assigned 
to one of them.