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Adobe 65014293 Scripting Guide - Page 53

Comparing colors, Getting a Web-safe color, Working with Filters

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CHAPTER 3: Scripting Photoshop Working with Filters 53 Look up the following in the Adobe Photoshop CS4 Visual Basic Scripting Reference, or in the Visual Basic Object Browser: ➤ model and cmyk as properties of the SolidColor object JS This example uses the foregroundColor property of the Application object to get the original color to be converted. The cmyk property of the SolidColor object that foregroundColor refers to provides a way to access the cmyk equivalent of the rgb color. var someColor = foregroundColor.cmyk Look up the following in the Adobe Photoshop CS4 JavaScript Scripting Reference, or in the ExtendScript Object Model Viewer: ➤ cmyk as a property of the SolidColor object ➤ foregroundColor as a property of the Application object Comparing colors Using the equal colors (IsEqual/isEqual) command, you can compare colors. The following statements return true if the foreground color is visually equal to background color. ➤ AS: if equal colors foreground color with background color then ➤ VBS: If (appRef.ForegroundColor.IsEqual(appRef.BackgroundColor)) Then ➤ JS: if (app.foregroundColor.isEqual(backgroundColor)) Getting a Web-safe color AS VBS JS To convert a color to a web safe color use the web safe color command on AppleScript and the NearestWebColor/nearestWebColor property of the SolidColor object for VBScript and JavaScript. set myWebSafeColor to web safe color for foreground color Dim myWebSafeColor Set myWebSafeColor = appRef.ForegroundColor.NearestWebColor var webSafeColor = new RGBColor() webSafeColor = app.foregroundColor.nearestWebColor Working with Filters To apply a filter in AppleScript, you use the filter command with an option from the class filter options. In VBScript and JavaScript, you use a specific filter method. For example, to apply a Gaussian blur filter, you use the ApplyGaussianBlur/applyGaussianBlur() method. All filter methods belong to the ArtLayer object. NOTE: Please refer to Photoshop Help for information about the effects produced by individual filter types. The following examples apply the Gaussian blur filter to the active layer.

Section	Page
Adobe® Creative Suite® 4 Photoshop® Scripting Guide	2
Introduction	6
About this Manual	6
Conventions in this Guide	6
Photoshop Scripting Basics	8
Scripting Overview	8
Why use scripts instead of actions?	8
Scripting Support in Photoshop	9
JavaScript support	9
Executing other scripts	10
Startup scripts	10
Executing JavaScripts from AS or VBS	10
Photoshop Object Model	11
Containment hierarchy	11
Application and document classes	12
Layer classes	12
Layer Comp class	13
Channel class	13
Selection class	13
History State class	13
Document Info class	13
Path Item, Sub Path Item, and Path Point classes	14
Preferences class	14
Notifier class	14
Count Item class	14
Color Sampler class	14
Measurement Scale class	14
The containment hierarchy and the Photoshop user interface	14
Additional objects	16
Constants	16
Creating a sample Hello World script	17
Creating and running an AppleScript	18
Creating and running a VBScript	19
Creating and running a JavaScript	19
Scripting Photoshop	21
Viewing Photoshop Objects, Commands, and Methods	21
Viewing Photoshop’s AppleScript dictionary	21
Viewing Photoshop’s type library (VBS)	22
Targeting and Referencing the Application Object	22
Creating New Objects in a Script	23
Setting the Active Object	25
Setting the active document	26
Setting the active layer	27
Setting the active channels	28
Opening a Document	28
Opening a file with default file format	28
Specifying file formats to open	29
Saving a Document	31
Setting Application Preferences	32
Allowing or Preventing Dialogs	33
Working with the Photoshop Object Model	33
Using the Application object	34
Using the Document object	34
Manipulating a document object	35
Working with layer objects	36
Creating an ArtLayer object	37
Creating a Layer Set object	38
Referencing ArtLayer objects	38
Working with Layer Set objects	39
Linking layer objects	40
Applying styles to layers	40
Using the Text Item object	41
Determining a layer’s kind	41
Adding and manipulating text in a Text Item object	42
Working with Selection objects	42
Creating and defining a selection	43
Stroking the selection border	44
Inverting selections	44
Expanding, contracting, and feathering selections	44
Filling a selection	45
Loading and storing selections	45
Working with Channel objects	46
Changing channel types	46
Using the Document Info object	47
Using history state objects	47
Using Notifier objects	48
Using the PathItem object	49
Working with color objects	51
Solid color classes	52
Using hex values for RGB color	52
Getting and converting colors	52
Comparing colors	53
Getting a Web-safe color	53
Working with Filters	53
Other filters	54
Understanding Clipboard Interaction	54
Using the copy and paste commands	54
Using the copy merged command/method	55
Working with Units	56
Unit values	56
Special unit value types	56
AppleScript unit considerations	56
Using unit values in calculations	57
Unit value usage	57
Setting ruler and type units in a script	59
Sample Workflow Automation JavaScripts	60
Advanced Scripting	60
Working with document preferences	61
Applying color to a text item	64
Applying a wave filter	66
Defining the area of a selection object	67
Applying a MotionBlur filter	71
Action Manager	73
The ScriptListener Plug-In	73
Installing ScriptListener	73
Action Manager Scripting Objects	74
Recording a Script using ScriptListener	74
Using the Action Manager from JavaScript	75
Using the Action Manager from a VBS Script	76
Running JavaScript-based Action Manager code from VBScript	79
Running JavaScript-based Action Manager code from AppleScript	80
Using ScriptListener to find event IDs and class IDs	81

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HAPTER

3: Scripting Photoshop

Working with Filters

Look up the following in the

Adobe Photoshop CS4 Visual Basic Scripting Reference

, or in the Visual Basic

Object Browser:

➤

model

and

cmyk

as properties of the

SolidColor

object

This example uses the

foregroundColor

property of the

Application

object to get the original color to

be converted. The

cmyk

property of the

SolidColor

object that

foregroundColor

refers to provides a

way to access the cmyk equivalent of the rgb color.

var someColor = foregroundColor.cmyk

Look up the following in the

Adobe Photoshop CS4 JavaScript Scripting Reference

, or in the ExtendScript

Object Model Viewer:

➤

cmyk

as a property of the

SolidColor

object

➤

foregroundColor

as a property of the

Application

object

Comparing colors

Using the

equal

colors (IsEqual/isEqual)

command, you can compare colors. The following

statements return

true

if the foreground color is visually equal to background color.

➤

AS:

if equal colors foreground color with background color then

➤

VBS:

(appRef.ForegroundColor.IsEqual(appRef.BackgroundColor)) Then

➤

JS:

if (app.foregroundColor.isEqual(backgroundColor))

Getting a Web-safe color

To convert a color to a web safe color use the

web

safe

color

command on AppleScript and the

NearestWebColor/nearestWebColor

property of the

SolidColor

object for VBScript and JavaScript.

set myWebSafeColor to web safe color for foreground color

VBS

Dim myWebSafeColor

Set myWebSafeColor = appRef.ForegroundColor.NearestWebColor

var webSafeColor = new RGBColor()

webSafeColor = app.foregroundColor.nearestWebColor

Working with Filters

To apply a filter in AppleScript, you use the

filter

command with an option from the class

filter

options

. In VBScript and JavaScript, you use a specific filter method. For example, to apply a Gaussian blur

filter, you use the

ApplyGaussianBlur/applyGaussianBlur()

method. All filter methods belong to the

ArtLayer

object.

OTE

Please refer to Photoshop Help for information about the effects produced by individual filter types.

The following examples apply the Gaussian blur filter to the active layer.