// Create an empty dialog window near the upper left of the screen
var dlg = new Window('dialog', 'Spec');
dlg.frameLocation = [100,100];
dlg.size = [250,250];
dlg.intro = dlg.add('statictext', [20,20,150,40] );
dlg.intro.text = 'First select 1 or 2 items';
dlg.where = dlg.add('dropdownlist', [20,40,150,60] );
dlg.where.selection = dlg.where.add('item', 'top');
dlg.where.add('item', 'bottom');
dlg.where.add('item', 'left');
dlg.where.add('item', 'right');
dlg.btn = dlg.add('button', [20,70,150,90], 'Specify', 'spec');
// document
var doc = activeDocument;
// spec layer
try {
var speclayer =doc.layers['spec'];
} catch(err) {
var speclayer = doc.layers.add();
speclayer.name = 'spec';
}
// measurement line color
var color = new RGBColor;
color.green = 255;
color.blue = 0;
// gap between measurement lines and object
var gap = 2;
// size of measurement lines.
var size = 10;
// number of decimal places
var decimals = 0;
// pixels per inch
var dpi = 72;
/**
Start the spec
*/
function startSpec() {
if (doc.selection.length==1) {
specSingle( doc.selection[0].geometricBounds, dlg.where.selection.text );
} else if (doc.selection.length==2) {
specDouble( doc.selection[0], doc.selection[1], dlg.where.selection.text );
} else {
alert('please select 1 or 2 items');
}
dlg.close ();
}
/**
Spec the gap between 2 elements
*/
function specDouble( item1, item2, where ) {
var bound = new Array(0,0,0,0);
var a = item1.geometricBounds;
var b = item2.geometricBounds;
if (where=='top' || where=='bottom') {
if (b[0]>a[0]) { // item 2 on right,
if (b[0]>a[2]) { // no overlap
bound[0] =a[2];
bound[2] = b[0];
} else { // overlap
bound[0] =b[0];
bound[2] = a[2];
}
} else if (a[0]>=b[0]){ // item 1 on right
if (a[0]>b[2]) { // no overlap
bound[0] =b[2];
bound[2] = a[0];
} else { // overlap
bound[0] =a[0];
bound[2] = b[2];
}
}
bound[1] = Math.max (a[1], b[1]);
bound[3] = Math.min (a[3], b[3]);
} else {
if (b[3]>a[3]) { // item 2 on top
if (b[3]>a[1]) { // no overlap
bound[3] =a[1];
bound[1] = b[3];
} else { // overlap
bound[3] =b[3];
bound[1] = a[1];
}
} else if (a[3]>=b[3]){ // item 1 on top
if (a[3]>b[1]) { // no overlap
bound[3] =b[1];
bound[1] = a[3];
} else { // overlap
bound[3] =a[3];
bound[1] = b[1];
}
}
bound[0] = Math.min(a[0], b[0]);
bound[2] = Math.max (a[2], b[2]);
}
specSingle(bound, where );
}
/**
spec a single object
@param bound item.geometricBound
@param where 'top', 'bottom', 'left,' 'right'
*/
function specSingle( bound, where ) {
// width and height
var w = bound[2]-bound[0];
var h = bound[1]-bound[3];
// a & b are the horizontal or vertical positions that change
// c is the horizontal or vertical position that doesn't change
var a = bound[0];
var b = bound[2];
var c = bound[1];
// xy='x' (horizontal measurement), xy='y' (vertical measurement)
var xy = 'x';
// a direction flag for placing the measurement lines.
var dir = 1;
switch( where ) {
case 'top':
a = bound[0];
b = bound[2];
c = bound[1];
xy = 'x';
dir = 1;
break;
case 'bottom':
a = bound[0];
b = bound[2];
c = bound[3];
xy = 'x';
dir = -1;
break;
case 'left':
a = bound[1];
b = bound[3];
c = bound[0];
xy = 'y';
dir = -1;
break;
case 'right':
a = bound[1];
b = bound[3];
c = bound[2];
xy = 'y';
dir = 1;
break;
}
// create the measurement lines
var lines = new Array();
// horizontal measurement
if (xy=='x') {
// 2 vertical lines
lines[0]= new Array( new Array(a, c+(gap)*dir) );
lines[0].push ( new Array(a, c+(gap+size)*dir) );
lines[1]= new Array( new Array(b, c+(gap)*dir) );
lines[1].push( new Array(b, c+(gap+size)*dir) );
// 1 horizontal line
lines[2]= new Array( new Array(a, c+(gap+size/2)*dir ) );
lines[2].push( new Array(b, c+(gap+size/2)*dir ) );
// create text label
if (where=='top') {
var t = specLabel( w, (a+b)/2, lines[0][1][1] );
t.top += t.height;
} else {
var t = specLabel( w, (a+b)/2, lines[0][0][1] );
t.top -= t.height;
}
t.left -= t.width/2;
// vertical measurement
} else {
// 2 horizontal lines
lines[0]= new Array( new Array( c+(gap)*dir, a) );
lines[0].push ( new Array( c+(gap+size)*dir, a) );
lines[1]= new Array( new Array( c+(gap)*dir, b) );
lines[1].push( new Array( c+(gap+size)*dir, b) );
//1 vertical line
lines[2]= new Array( new Array(c+(gap+size/2)*dir, a) );
lines[2].push( new Array(c+(gap+size/2)*dir, b) );
// create text label
if (where=='left') {
var t = specLabel( h, lines[0][1][0], (a+b)/2 );
t.left -= t.width;
} else {
var t = specLabel( h, lines[0][0][0], (a+b)/2 );
t.left += size;
}
t.top += t.height/2;
}
// draw the lines
var specgroup = new Array(t);
for (var i=0; i<lines.length; i++) {
var p = doc.pathItems.add();
p.setEntirePath ( lines[i] );
setLineStyle( p, color );
specgroup.push( p );
}
group(speclayer, specgroup );
}
/**
Create a text label that specify the dimension
*/
function specLabel( val, x, y) {
var t = doc.textFrames.add();
t.textRange.characterAttributes.size = 8;
t.textRange.characterAttributes.alignment = StyleRunAlignmentType.center;
var v = val;
switch (doc.rulerUnits) {
case RulerUnits.Inches:
v = val/dpi;
v = v.toFixed (decimals);
break;
case RulerUnits.Centimeters:
v = val/(dpi/2.54);
v = v.toFixed (decimals);
break;
case RulerUnits.Millimeters:
v = val/(dpi/25.4);
v = v.toFixed (decimals);
break;
case RulerUnits.Picas:
v = val/(dpi/6);
var vd = v - Math.floor (v);
vd = 12*vd;
v = Math.floor(v)+'p'+vd.toFixed (decimals);
break;
default:
v = v.toFixed (decimals);
}
t.contents = v;
t.top = y;
t.left = x;
return t;
}
function setLineStyle(path, color) {
path.filled = false;
path.stroked = true;
path.strokeColor = color;
path.strokeWidth = 0.5;
return path;
}
/**
* Group items in a layer
*/
function group( layer, items, isDuplicate) {
// create new group
var gg = layer.groupItems.add();
// add to group
// reverse count, because items length is reduced as items are moved to new group
for(var i=items.length-1; i>=0; i--) {
if (items[i]!=gg) { // don't group the group itself
if (isDuplicate) {
newItem = items[i].duplicate (gg, ElementPlacement.PLACEATBEGINNING);
} else {
items[i].move( gg, ElementPlacement.PLACEATBEGINNING );
}
}
}
return gg;
}
dlg.btn.addEventListener ('click', startSpec );
dlg.show();
