This sets the rulerunits to Pixels then when finished resets them back to what they were....
// ================================================================================================
// Script Name: autocrop.js
// ================================================================================================
// Version 2.0 9 December 2003
// Description: crops the active document after image rotation
// This version is compatible with Photoshop CS and will not run on Photoshop 7
// This script is product of Paul Jaruszewski and Roger Cavanagh
// Contact Paul at www.melor.com
// Contact Roger at www.rogercavanagh.com
// This script is provided free for personal use.
// No liability will be accepted for any consequences arising from the use of this script.
// This script may be copied IN ITS ENTIRETY to others provided and no charge is made other
// than for media. Credit to Paul and Roger must be made if this script is posted for download
// or distribution.
// Installation: copy the file autocrop.js to the ..\Presets\Scripts folder
// Globals
var chosenMethod = 0;
var ui_NoOpenDocuement = "No open document";
var hlpMsg = new Array();
var msg = "";
var hid_BinChop = 1;
msg = "Binary Search will usually be the fastest method to find edges, but may be slower than the ";
msg = msg + "Slice method with smaller amounts (1-2 degrees) of rotation. May produce an over";
msg = msg + "-crop, if the search inadvertently matches the background colour inside the picture.";
hlpMsg[hid_BinChop] = msg;
var hid_Slice = 2;
msg = "Almost as fast as binary search method, but will sometimes produce slight over-crop. This ";
msg = msg + "can be avoided by ensuring the background colour is different from the edges (10 px) ";
msg = msg + "colour in the picture";
hlpMsg[hid_Slice] = msg;
var hid_UniPixel = 3;
msg = "This is much the slowest search method, but will only produce an error, ";
msg = msg + "if edges pixels are the same colour as the background.";
hlpMsg[hid_UniPixel] = msg;
var hid_BestResults = 4;
msg = "For best results, you should make sure the background colour does not occur near the top ";
msg = msg + "left corner of your picture. If the picture contains predominantly dark colours, ";
msg = msg + "set a white background before image rotation, and vice versa.";
hlpMsg[hid_BestResults] = msg;
// ================================================================================================
function settingDialog() { // Creates dialog window and gets user input ===settingDialog===
// ================================================================================================
// These are functions in scope for settingDialog ()
// ------------------------------------------------------------------------------aboutBtnOnClick---
function aboutBtnOnClick() {
var msg = "Autocrop V2\n\n\Copyright \u00A9 2003 Paul Jaruszewski and Roger Cavanagh\n";
msg = msg + "www.melor.com - www.rogercavanagh.com\n";
msg = msg + "Information: http://www.rogercavanagh.com/actions/15_autocrop.htm";
dlg.msgPnl.helpMsgSt.text = msg;
} // end about BtnOnClick
function cancelBtnOnClick() { // -----------------------------------------------cancelBtnOnClick---
dlg.close();
} // end cancelBtnOnClick
function evalMethod() { //------------------------------------------------------------evalMethod---
var result = 0;
if (dlg.methodPnl.binChop.value) { result = 1; };
if (dlg.methodPnl.slice.value) { result = 2; };
if (dlg.methodPnl.uniPixel.value) { result = 3; };
return result;
} // end function evalMethod
function runBtnOnClick() { // -----------------------------------------------------runBtnOnClick---
chosenMethod = evalMethod();
dlg.close();
} // end runBtnOnClick
function displayHelp(hlpMsgId) { // -------------------------------------------------displayHelp---
dlg.msgPnl.helpMsgSt.text = hlpMsg[hlpMsgId];
} // end function
// Standard Values
var mgn = 10;
var mgnTop = 20;
var rowH = 20;
var rBtnW = 120;
var btnW = 100;
// Method Panel Parameters ---Method Panel Parameters---
var ul_MethodPnlTitle= "Method:";
var methodPnlRows = 3;
var methodPnlCols = 1;
var methodPnlH = methodPnlRows*(mgn + rowH) + mgnTop;
var methodPnlW = 350; // (methodPnlRows + 1)*mgn + rBtnW; // max number of items
var methodPnlX = mgn;
var methodPnlY = mgn;
// Control Panel Parameters ---Control Panel Parameters---
var ul_ControlPnlTitle = "Control Panel:";
var ul_Run = "Run";
var ul_Cancel = "Cancel";
var ul_About = "About";
var controlPnlRows = 3;
var controlPnlCols = 1;
var controlPnlH = methodPnlH;
var controlPnlW = btnW + (controlPnlCols + 1)*mgn
var controlPnlX = methodPnlX + methodPnlW + mgn;
var controlPnlY = mgn;
// Message Panel Parameters ---Message Panel Parameters---
var ul_MsgPnlTitle = "";
var msgPnlH = 140;
var msgPnlW = methodPnlW + controlPnlW + mgn;
var msgPnlX = mgn;
var msgPnlY = methodPnlY + methodPnlH + mgn;
var ul_BinarySearch = "Binary Search";
var ul_PixelSlice = "Pixel Slice";
var ul_SinglePixel = "Single Pixel";
// Dialog Window Parameters ---Dialog Window Parameters---
var uiTitle = "Autocrop";
var numPnlsAcross = 2;
var numPnlsDown = 2;
var dlgX = 100;
var dlgY = 100;
var dlgH = methodPnlH + msgPnlH + (numPnlsDown + 1)*mgn;
var dlgW = methodPnlW + controlPnlW + (numPnlsAcross + 1)*mgn;
var bounds = new Array(4);
var x1 = 0, x2 = 0, y1 = 0;
// Create window and panels ---Create window and panels---
bounds = {x:dlgX, y:dlgY, width:dlgW, height:dlgH};
var dlg = new Window("dialog", uiTitle, bounds);
bounds = {x:methodPnlX, y:methodPnlY, width:methodPnlW, height:methodPnlH};
dlg.methodPnl = dlg.add("panel", bounds, ul_MethodPnlTitle);
bounds = {x:controlPnlX, y:controlPnlY, width:controlPnlW, height:controlPnlH};
dlg.controlPnl = dlg.add("panel", bounds, "Control Panel:");
// Method Panel Elements ---Method Panel Elements---
x1 = mgn;
y1 = mgnTop;
bounds = {x:x1, y:y1, width:rBtnW, height:rowH};
dlg.methodPnl.binChop = dlg.methodPnl.add("radiobutton", bounds, ul_BinarySearch);
dlg.methodPnl.binChop.value = true;
dlg.methodPnl.binChop.onClick = function() { displayHelp(hid_BinChop); };
y1 = y1 + rowH +mgn;
bounds = {x:x1, y:y1, width:rBtnW, height:rowH};
dlg.methodPnl.slice = dlg.methodPnl.add("radiobutton", bounds, ul_PixelSlice);
dlg.methodPnl.slice.onClick = function() { displayHelp(hid_Slice); };
y1 = y1 + rowH +mgn;
bounds = {x:x1, y:y1, width:rBtnW, height:rowH};
dlg.methodPnl.uniPixel = dlg.methodPnl.add("radiobutton", bounds, ul_SinglePixel);
dlg.methodPnl.uniPixel.onClick = function() { displayHelp(hid_UniPixel); };
// Control Panel Elements ---Control Panel Elements---
x1 = mgn;
y1 = mgnTop;
bounds = {x:x1, y:y1, width:btnW, height:rowH};
dlg.controlPnl.runBtn = dlg.controlPnl.add("button", bounds, ul_Run);
dlg.controlPnl.runBtn.onClick = function() {runBtnOnClick();};
y1 = y1 + rowH + mgn;
bounds = {x:x1, y:y1, width:btnW, height:rowH};
dlg.controlPnl.cancelBtn = dlg.controlPnl.add("button", bounds, ul_Cancel);
dlg.controlPnl.cancelBtn.onClick = function() {cancelBtnOnClick();};
y1 = y1 + rowH + mgn;
bounds = {x:x1, y:y1, width:btnW, height:rowH};
dlg.controlPnl.aboutBtn = dlg.controlPnl.add("button", bounds, ul_About);
dlg.controlPnl.aboutBtn.onClick = function() {aboutBtnOnClick();};
// Message Panel Elements ---Message Panel Elements---
bounds = {x:msgPnlX, y:msgPnlY, width:msgPnlW, height:msgPnlH};
dlg.msgPnl = dlg.add("panel", bounds, "");
x1 = mgn;
y1 = mgn;
bounds = {x:x1, y:y1, width:msgPnlW - 2*mgn, height:msgPnlH - 2*mgn};
dlg.msgPnl.helpMsgSt = dlg.msgPnl.add("statictext", bounds, "", {multiline: true});
displayHelp(hid_BestResults);
return dlg;
} // end settingDialog ========================================================end settingDialog===
// ================================================================================================
function main() { // ===main===
// ================================================================================================
// These are functions in scope for main()
function doCropUniPixel() { // Single Pixel Search Routine ---------------------doCropUniPixel---
// Declare and Initialise
var picrgb = new Array(3);
var backrgb = new Array(3);
var bounds = new Array(4);
var j = 0;
backrgb=eyeDropper(0,0); //Find color of upper left pixel
var maxi = docRef.width;
if (maxi > docRef.height) {
maxi = docRef.height;
}
maxi = Math.floor(maxi/2);
loopOne:
for (j=1;j < maxi; j++) {
picrgb=eyeDropper(j,j);
if (backrgb[0] != picrgb[0] || backrgb[1] != picrgb[1] || backrgb[2] != picrgb[2]) { // edge!
bounds = new Array(j, j, docRef.width - j, docRef.height - j);
docRef.crop(bounds);
bounds = null;
break; // Exit for loop
}
purge(PurgeTarget.ALLCACHES);
} // end for
// prep for looptwo
var maxi = docRef.width;
if (maxi > docRef.height) {
maxi = docRef.height;
}
maxi = Math.floor(maxi/2);
loopTwo:
for (j=1;j < maxi; j++) {
picrgb=eyeDropper(docRef.width - j,j);
if (backrgb[0] != picrgb[0] || backrgb[1] != picrgb[1] || backrgb[2] != picrgb[2]) { // edge
bounds = new Array(j, j, docRef.width - j, docRef.height - j);
docRef.crop(bounds);
bounds = null;
break; // Exit for loop
}
purge(PurgeTarget.ALLCACHES);
} // end for
} // end function doCropUniPixel
function doCropBinChop() { // Binary Search Routine -----------------------------doCropBinChop---
// Declare and Initialise
var picrgb = new Array(3);
var backrgb = new Array(3);
var bounds = new Array(4);
var j = 0;
var ub= 0;
var lb = 0;
backrgb=eyeDropper(0,0); //Find colour of upper left pixel
var maxi = docRef.width;
if (maxi > docRef.height) {
maxi = docRef.height;
}
ub = Math.floor(maxi/2);
loopOne:
while (ub - lb > 1) {
j = Math.floor((ub - lb)/2) + lb;
picrgb=eyeDropper(j,j);
if (backrgb[0] != picrgb[0] || backrgb[1] != picrgb[1] || backrgb[2] != picrgb[2]) {
ub = j;
} else {
lb = j;
} // end if
purge(PurgeTarget.ALLCACHES);
} // end while
bounds = [ub , ub , docRef.width - ub , docRef.height - ub ];
docRef.crop(bounds);
bounds = null;
// prep for looptwo
maxi = docRef.width;
if (maxi > docRef.height) {
maxi = docRef.height;
}
lb = 0;
ub = Math.floor(maxi/2)
loopTwo:
while (ub - lb > 1) {
j = Math.floor((ub - lb)/2) + lb;
picrgb=eyeDropper(docRef.width - j,j);
if (backrgb[0] != picrgb[0] || backrgb[1] != picrgb[1] || backrgb[2] != picrgb[2]) {
ub = j;
} else {
lb = j;
} // end if
purge(PurgeTarget.ALLCACHES);
} // end while
bounds = [ub , ub , docRef.width - ub , docRef.height - ub];
docRef.crop(bounds);
bounds = null;
} // end function doCropBinChop
function doCropSlice() { // +10 Pixel Routine ---------------------------------------doCropSlice---
// Declare and Initialise
var picrgb = new Array(3);
var backrgb = new Array(3);
var bounds = new Array(4);
var j = 0;
var jInc = 10;
var maxi = docRef.width;
if (maxi > docRef.height) {
maxi = docRef.height;
}
backrgb=eyeDropper(0,0); //Find colour of upper left pixel
j = 1;
loopOne:
while (j < maxi) {
picrgb=eyeDropper(j,j);
if (backrgb[0] != picrgb[0] || backrgb[1] != picrgb[1] || backrgb[2] != picrgb[2]) {
if (jInc == 1) {
bounds = [j, j, docRef.width - j, docRef.height - j];
docRef.crop(bounds);
bounds = null;
break loopOne;
} else {
j = j - jInc;
if (j < 0) {
j = 0;
}
jInc = 1 ;
}
}
purge(PurgeTarget.ALLCACHES);
j = j + jInc;
} // end while
maxi = docRef.width;
if (maxi > docRef.height) {
maxi = docRef.height;
}
jInc = 5;
j = 1;
loopTwo:
while (j < maxi) {
picrgb=eyeDropper(docRef.width - j,j);
if (backrgb[0] != picrgb[0] || backrgb[1] != picrgb[1] || backrgb[2] != picrgb[2]) {
if (jInc == 1) {
bounds = [j, j, docRef.width - j, docRef.height - j];
docRef.crop(bounds);
bounds = null;
break loopTwo;
} else {
j = j - jInc;
if (j < 0) {
j = 0;
}
jInc = 1;
}
}
purge(PurgeTarget.ALLCACHES);
j = j + jInc;
} // end while
} // end function doCropSlice
function eyeDropper(x,y) { // --------------------------------------------------------eyeDropper---
// This function returns the three values for the RGB colours of any given pixel
var x2 = x + 1;
var y2 = y + 1;
var out = new Array(3);
docRef.selection.select([[x,y], [x2,y], [x2,y2], [x, y2]], SelectionType.REPLACE, 0, false);
for(ch in list = ["Red", "Green", "Blue"]) {
histogram = docRef.channels[list[ch]].histogram;
for (i = 0; i <= 255; i++) {
if (histogram[i]) {
out[ch] = i;
break;
}
} // end for
} // end for
return out;
} // end function eyeDropper
// ------------------------------------------------------------------------------------------------
// Start of main() processing ---Start of main() processing---
// ------------------------------------------------------------------------------------------------
if ( documents.length <= 0 ) {
alert(ui_NoOpenDocument); // so we crash out
return;
}
try {
var docRef = activeDocument;
var startRulerUnits = app.preferences.rulerUnits;
app.preferences.rulerUnits = Units.PIXELS;
var settings = settingDialog(chosenMethod);
settings.show();
switch(chosenMethod) {
case 1:
doCropBinChop();
break;
case 2:
doCropSlice();
break;
case 3:
doCropUniPixel();
break;
} // End switch
app.preferences.rulerUnits = startRulerUnits;
} catch (e) {
app.preferences.rulerUnits = startRulerUnits;
alert("Something's bollixed. Error name: " + e.name + ". Error message: " + e.message + " Line number = " +e.line);
} // end try
} // end function main
// ================================================================================================
// Dispatch
// ================================================================================================
main();
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