//DESCRIPTION:Label image with its size
// Jongware, 13-Jan-2012
// No Guarantees, Etc.

if (app.documents.length && app.selection.length == 1 && app.selection[0].hasOwnProperty("paths"))
{
if (app.version < 6)
labelItem(app.selection[0]);
else
app.doScript(labelItem, ScriptLanguage.JAVASCRIPT, app.selection[0], UndoModes.ENTIRE_SCRIPT, "Label Image Size");
} else
{
alert ("No valid selection.\nPlease select one single object with the black arrow before running this script.");
}

function labelItem (item)
{
// Save current selected layer because adding one will make it active!
activeLayer = app.activeDocument.layoutWindows[0].activeLayer;
// Make sure the layer "ImageSize" exists
try {
app.activeDocument.layers.add({name:"ImageLabel", ignoreWrap:true, layerColor: [90,192,90], printable: false});
} catch (_) { }
reportLayer = app.activeDocument.layers.item("ImageLabel");

// Make sure the swatch "ImageGreen" exists
try {
app.activeDocument.colors.add({name:"ImageLabel", space:ColorSpace.RGB, colorValue:[90,192,90], colorModel:ColorModel.PROCESS});
} catch (_) { }
reportGreen = app.activeDocument.swatches.item("ImageLabel");

// Make sure the paragraph style "ImageSize" exists
try {
app.activeDocument.paragraphStyles.add({name:"ImageLabel", appliedFont:"Arial", pointSize:12, fillColor:reportGreen, justification: Justification.CENTER_ALIGN});
} catch (_) { }
reportStyle = app.activeDocument.paragraphStyles.item("ImageLabel");

// Make sure measurement units are in inches
hmmu = app.activeDocument.viewPreferences.horizontalMeasurementUnits;
vmmu = app.activeDocument.viewPreferences.verticalMeasurementUnits;
app.activeDocument.viewPreferences.horizontalMeasurementUnits = MeasurementUnits.INCHES_DECIMAL;
app.activeDocument.viewPreferences.verticalMeasurementUnits = MeasurementUnits.INCHES_DECIMAL;
// .. and Smart Quotes is Off
sqt = app.activeDocument.textPreferences.typographersQuotes;
app.activeDocument.textPreferences.typographersQuotes = false;
// Save all of the previous settings to be able to restore them later :slightly_smiling_face:

// fetch width and height for the numbers, left and bottom for the lines
gb = item.geometricBounds;
// gb now holds [ top, left, bottom, right ] values -- get shorthand values
top = gb[0];
left = gb[1];
bottom = gb[2];
right = gb[3];

width = Math.round(Math.abs(right - left)*1000)/1000;
height= Math.round(Math.abs(bottom - top)*1000)/1000;

// Retrieve the current page.
// Actually, in CS5 and newer, page items have a property for this (parentPage),
// but I don't have that one near, and it's also nicer to make it work in CS4
// (and possibly even in older versions).
pg = item.parent;
while (1)
{
if (pg instanceof InsertionPoint)
pg = pg.parentTextframes[0];
if (pg instanceof Document || pg instanceof Spread || pg instanceof Page)
break;
pg = pg.parent;
}
// Draw text frame #1: Height
// Put it at the left of the selection, 0.5" wide and 0.2" off the left side
frh = pg.textFrames.add(reportLayer, {geometricBounds:[ top, left - 0.7, top + height, left - 0.2 ],
textFramePreferences: {verticalJustification: VerticalJustification.CENTER_ALIGN,
ignoreWrap: true } });
// ... and put text into it.
frh.insertionPoints[0].appliedParagraphStyle = reportStyle;
frh.contents = String(height)+'"';

// Draw text frame #2: Width
// Put it at 0.2" off the bottom of the selection, 0.25" high, full width for convenience
frw = pg.textFrames.add(reportLayer, {geometricBounds:[ bottom + 0.2, left, bottom + 0.2 + 0.25, left + width ],
textFramePreferences: {verticalJustification: VerticalJustification.CENTER_ALIGN,
ignoreWrap: true } });
// ... and put text into it.
frw.insertionPoints[0].appliedParagraphStyle = reportStyle;
frw.contents = String(width)+'"';

// Add vertical (height) line
lnh = pg.graphicLines.add (reportLayer, {strokeColor:reportGreen, strokeWeight:0.5});
// It appears in a default position so move it to the right one
lnh.paths[0].entirePath = [ [left - 0.15, top ], [left - 0.15, bottom ] ];
// add top stroke; it's 0.05" wide so offset left and right with 0.025"
lnh.paths.add ({ entirePath:[ [left-0.15 - 0.025, top ], [left-0.15 + 0.025, top] ] });
// add bottom stroke
lnh.paths.add ({ entirePath:[ [left-0.15 - 0.025, bottom ], [left-0.15 + 0.025, bottom] ] });

// Add horizontal (width) line
lnw = pg.graphicLines.add (reportLayer, {strokeColor:reportGreen, strokeWeight:0.5});
// Again we move it to the right position
lnw.paths[0].entirePath = [ [left, bottom + 0.15 ], [right, bottom + 0.15 ] ];
// Add end caps as above
lnw.paths.add ({ entirePath:[ [left, bottom+0.15 - 0.025 ], [left, bottom+0.15 + 0.025] ] });
lnw.paths.add ({ entirePath:[ [right, bottom+0.15 - 0.025 ], [right, bottom+0.15 + 0.025] ] });

// At this point we added four items: 2 text frames and 2 graphic lines.
// Group them together for convenience
app.activeDocument.groups.add ( [ frh, frw, lnh, lnw ] );

// Restore old layer selection
app.activeDocument.layoutWindows[0].activeLayer = activeLayer;

// Restore previous global settings
app.activeDocument.viewPreferences.horizontalMeasurementUnits = hmmu;
app.activeDocument.viewPreferences.verticalMeasurementUnits = vmmu;
app.activeDocument.textPreferences.typographersQuotes = sqt;

}