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Scripting Photoshop 3 Advanced Scripting Notice that the position property of the text layer is an array whose values were chosen to roughly center the text in the dialog. A relatively large font size was chosen to increase the visibility of the text message. The color property is the SolidColor object created earlier, whose function is to display text in red. Set docRef = app.ActiveDocument Set textColor = New Photoshop.SolidColor textColor.RGB.Red = 255 textColor.RGB.Green = 0 textColor.RGB.Blue = 0 Set newTextLayer = docRef.ArtLayers.Add() newTextLayer.Kind = Photoshop.PsLayerKind.psTextLayer newTextLayer.TextItem.Contents = helloWorldStr newTextLayer.TextItem.Position = Array(0.75, 1) newTextLayer.TextItem.Size = 36 newTextLayer.TextItem.Color = textColor This code snippet outputs "Hello, World!" in red. Applying a Wave Filter Now that text displays on your document, you're ready to apply some special effects. First, redefine the width and height of the document in pixels. Additionally, convert the text layer to pixels -- we do this because text is a vector graphic and we need a bitmap in order to manipulate the image. Next create an array to specify the area to be selected for image manipulation. Notice that the array of points begins at the top left corner of the dialog and extends half way across the document. Other array values define vertical positioning. With the width and height of the array thus defined, select the left side of the document. "Ants marching up the page" delimit the area selected. Photoshop CS Scripting Guide 48

Section	Page
Photoshop CS Scripting Guide	1
Table of contents	3
Introduction	5
1.1 About this manual	5
1.1.1 Conventions in this guide	5
1.2 What is scripting?	6
1.3 Why use scripting?	7
1.4 What about actions?	7
1.5 System requirements	8
1.5.1 Mac	8
1.5.2 Windows	8
1.6 JavaScript	9
1.7 Choosing a scripting language	9
1.8 Legacy COM scripting	10
1.9 New Features	10
1.10 What’s Next	11
Scripting basics	12
2.1 Documents as objects	12
2.2 Object model concepts	12
2.2.1 Object classes	12
2.2.2 Object inheritance	13
2.2.3 Object elements or collections	13
2.2.4 Object reference	13
2.3 Object Model	14
2.3.1 Additional Containment Classes	16
2.3.2 Hello World Sample Scripts	18
2.4 Documenting scripts	21
2.5 Values	22
2.6 Variables	24
2.6.1 Assigning values to variables	24
2.6.2 Using variables to store references	25
2.6.3 Naming variables	25
2.7 Operators	26
2.8 Commands and methods	26
2.8.1 Conditional statements	27
2.8.2 Control structures	28
2.9 Handlers, subroutines and functions	29
2.10 Debugging and Error Handling	30
2.10.1 AppleScript debugging	31
2.10.2 Visual Basic debugging	32
2.10.3 JavaScript Debugging	33
2.10.4 Error handling	33
2.11 What’s Next	34
Scripting Photoshop	35
3.1 Photoshop scripting guidelines	35
3.2 Viewing Photoshop objects, commands and methods	35
3.2.1 Viewing Photoshop’s AppleScript dictionary	36
3.2.2 Viewing Photoshop’s type library (VB)	37
3.2.3 Viewing the JavaScript Environment	37
3.3 Your first Photoshop script	39
3.3.1 AppleScript	39
3.3.2 Visual Basic	40
3.3.3 VBScript	42
3.3.4 JavaScript	43
3.4 Advanced Scripting	45
3.4.1 Advanced JavaScript	45
3.4.2 Advanced Visual Basic	50
3.4.3 Advanced AppleScript	54
3.5 Object references	59
3.5.1 AppleScript	59
3.5.2 Visual Basic and JavaScript	60
3.6 Working with units	61
3.6.1 Unit values	61
3.6.2 Unit value useage	64
3.6.3 Changing ruler and type units	65
3.7 Executing JavaScripts from AS or VB	66
3.7.1 Passing arguments to JavaScript	67
3.7.2 Executing one-line JavaScripts	68
3.8 The Application object	68
3.9 Document object	72
3.9.1 Saving documents and save options	72
3.9.2 Document information	74
3.9.3 Document manipulation	75
3.10 Layer objects	76
3.10.1 Setting the Active layer	79
3.10.2 Layer sets	79
3.10.3 Linking layers	80
3.10.4 Applying styles to layers	81
3.10.5 Rotating layers	81
3.11 Text item object	81
3.11.1 Setting the contents of the text item	83
3.11.2 Setting text stroke colors	84
3.11.3 Setting fonts	84
3.11.4 Warping text	85
3.12 Selections	85
3.12.1 Defining selections	86
3.12.2 Stroking the selection border	88
3.12.3 Inverting selections	88
3.12.4 Expand, contract and feather selections	88
3.12.5 Filling a selection	90
3.12.6 Rotating selections	91
3.12.7 Loading and storing selections	91
3.13 Working with Filters	92
3.13.1 Selecting channel(s) to filter	92
3.13.2 Other filters	93
3.14 Channel object	93
3.14.1 Channel types	93
3.14.2 Setting the active channel	94
3.14.3 Creating new channels	94
3.15 Color objects	95
3.15.1 Setting a Color	95
3.15.2 Getting and converting colors	97
3.15.3 Comparing Colors	98
3.15.4 Getting a Web Safe Color	98
3.16 History object	98
3.16.1 Filling a selection with a history state	99
3.17 Clipboard interaction	100
3.17.1 Copy	100
3.17.2 Copy merged	100
3.17.3 Cut	101
3.17.4 Paste	101
3.17.5 Paste into command	102

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Photoshop CS Scripting Guide

Scripting Photoshop

Advanced Scripting

Notice that the position property of the text layer is an array whose values were chosen to

roughly center the text in the dialog. A relatively large font size was chosen to increase the

visibility of the text message. The color property is the SolidColor object created earlier,

whose function is to display text in red.

Set docRef = app.ActiveDocument

Set textColor = New Photoshop.SolidColor

textColor.RGB.Red = 255

textColor.RGB.Green = 0

textColor.RGB.Blue = 0

Set newTextLayer = docRef.ArtLayers.Add()

newTextLayer.Kind = Photoshop.PsLayerKind.psTextLayer

newTextLayer.TextItem.Contents = helloWorldStr

newTextLayer.TextItem.Position = Array(0.75, 1)

newTextLayer.TextItem.Size = 36

newTextLayer.TextItem.Color = textColor

This code snippet outputs "Hello, World!" in red.

Applying a Wave Filter

Now that text displays on your document, you’re ready to apply some special effects. First, re-

ﬁ

ne the width and height of the document in pixels. Additionally, convert the text layer to

pixels -- we do this because text is a vector graphic and we need a bitmap in order to

manipulate the image.

Next create an array to specify the area to be selected for image manipulation. Notice that the

array of points begins at the top left corner of the dialog and extends half way across the

document. Other array values de

ﬁ

ne vertical positioning.

With the width and height of the array thus de

ﬁ

ned, select the left side of the document. "Ants

marching up the page" delimit the area selected.