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display the result in another field. This feature is often used in an interactive

order form where the product of an item’s quantity and price is automatically

displayed in a total field. In addition, it’s possible to perform more advanced

calculations using JavaScript.

To define the fields in a form that will perform calculations or attach a

JavaScript calculation to a field, select one of the three radio buttons on the

Calculate tab:

Value Is Not Calculated: The default state. Select this option if you don’t

want to perform a calculation on data entered in a field.

Value Is the <Operation> of the Following Fields: Provides a drop-down

list of five operations: sum (+), product (×), average, minimum, and max-

imum. Select an operation option and then click the Pick button to open

the Field Selection dialog box, which displays a list of fields in your form.

Select a field’s check box in the Select Fields for Calculation list box. You

can select more than one field at a time, and you can select or deselect

all the fields by clicking the appropriate button. When you’re finished

selecting fields, click the OK button.

Custom Calculation Script: Click the Edit button to open the JavaScript

Edit window. If you’re familiar with JavaScript language, you can write

your own or copy and paste a predefined JavaScript in the script editing

window. Click OK to close the JavaScript Edit window. The calculation

script appears in a preview box below the Custom Calculation Script

radio button. Note that you can use the arrow keys to view the script,

but you can’t edit it.

By default, field calculations are performed in the same order as the form

field’s tab order — that is, the order in which the fields are selected when the

user presses the Tab key (see the “Tabbing through a form” section, later in

this chapter). This is not always a good idea, especially if your form contains

multiple calculations where the result of one calculation depends on the result

of another calculation. To override the default, set your own calculation order

by choosing Advanced➪Forms➪Set Field Calculation Order to open the

Calculated Fields dialog box. Select fields in the window and use the Up

and Down buttons to arrange their calculation order, and then click OK

to save your changes.

Sizing up the Selection Change tab

The Selection Change tab provides you with the means to execute JavaScript

actions when making a selection in the List Box field type.

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To use this feature, click one of the two radio buttons on the Selection

Change tab:

Do Nothing: Use this option if you don’t want to run a JavaScript action

when a user makes a list box selection.

Execute This Script: Use this option to attach an action, and then

click the Edit button to open the JavaScript Edit window. If you’re familiar

with JavaScript language, you can write your own or copy and paste a

predefined JavaScript in the script editing window. Click OK to close the

JavaScript Edit window. The JavaScript appears in a preview box on the

Selection Change tab. Note that you can use the arrow keys to view the

script, but you can’t edit it.

Singling out the Signed tab

Options on the Signed tab apply only to the Signature field type. Its com-

mands enable you to specify actions that occur in a form when data is entered

into a blank signature field. You add signature fields to a form in the same

manner as you do other form fields by using the Digital Signature tool. (See

the “Adding Fields to Forms” section, earlier in this chapter, if you need a

refresher.) The Digital Signature tool creates a blank signature field that can

be filled out as part of completing a form. (To find out all about digital signa-

tures, see Chapter 11.)

To configure a blank signature field, click one of the three radio buttons on

the Signed tab:

Nothing Happens When Signed: Use this default option if you don’t

want any actions to occur to data entered in a field.

Mark as Read-Only: Provides a means of locking portions of a form at the

time it is signed off in the signature field, in essence “freezing” the form at

that moment in time. Select one of three items on the drop-down list: All

Fields, All Fields Except These, and Just These Fields. If you select either

of the latter two options, click the Pick button to open the Field Selection

dialog box, where you choose the fields you want to render as read-only.

Pick a field by selecting the check box next to the field name in the Mark

Fields as Read Only list box. When you’re finished adding fields, click the

OK button.

This Script Executes When the Signature Field Is Signed: Click

this radio button to execute a specific JavaScript action when data is

entered in a signature field. Click the Edit button to open the JavaScript

Edit window. If you’re familiar with JavaScript language, you can write

your own or copy and paste a predefined JavaScript in the script editing

window. Click OK to close the JavaScript Edit window. The action script

appears in a preview box below the radio button. Note that you can use

the arrow keys to view the script, but you can’t edit it.

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Looking at the Layout Grid

Acrobat 6 provides a wealth of tools that make the process of laying out and

modifying form fields quick and easy. One of these tools is the Layout Grid —

anon-printing, customizable on-screen grid that provides guidelines for draw-

ing field boxes with the seven form field tools. To show or hide the Layout

Grid, choose View➪Grid or press Ctrl+U (Ô+U on the Mac). The best part of

the Layout Grid, however, is its Snap to Grid feature, which causes field bound-

aries to snap to gridlines when they’re being drawn, as shown in Figure 14-13.

To turn this feature on or off, choose View➪Snap to Grid or press Ctrl+Shift+U

(Ô+Shift+U on the Mac). Note that because these two features are discrete, the

Snap to Grid feature will still work even if the Layout Grid is hidden and vice

versa. A check mark next to either command’s name on the menu bar lets you

know the feature is turned on.

Setting Layout Grid preferences

Layout Grid preferences let you specify a grid’s spacing, position on a page,

subdividing lines, and color. Choose Edit➪Preferences or press Ctrl+K (Ô+K

on the Mac) to open the Preferences dialog box, and then click Units & Guides

in the list box to display the options shown in Figure 14-14. The following

options are found in the Layout Grid area:

Figure 14-13:

Drawing

form fields

using the

Layout Grid

with its

Snap to Grid

feature

turned on.

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Chapter 14: Creating Interactive Forms

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To specify the space between major gridlines, click the spinner buttons or

enter a measurement in the Width and Height between Lines text boxes.

To offset the Layout Grid from the top-left corner of the page, click the

spinner buttons or enter a measurement in the Grid Offset from the Left

Edge or Grid Offset from the Top Edge text boxes.

To display a specified number of subdividing lines between major grid-

lines, click the spinner buttons or enter a number in the Subdivisions

text box.

To specify the color of the gridlines, click the Grid Line Color button and

select the desired color on the color palette (Windows) or the color

picker dialog box (Mac) that appears.

When you’re finished selecting Layout Grid preferences, click OK to apply

your changes and close the Preferences dialog box.

You’ll probably find that the Layout Grid isn’t really very useful for adding

fields to ready-made forms that you’ve scanned into Acrobat 6 because its

gridlines will rarely match the cells that are already drawn in your paper

form. In these cases, use the Align commands (see the “Move those fields!”

section) to keep your fields straight. Where it really makes sense to use the

Layout Grid is in designing and building a form from scratch. Here’s a quick

and easy method of getting a blank page into Acrobat 6 so you can use the

Figure 14-14:

Layout Grid

options

in the

Preferences

dialog box.

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Layout Grid to custom build a form: Open a new blank document in Microsoft

Word (Windows or Mac) and click the Convert to PDF button on the PDFMaker

6.0 toolbar. You can open the resulting blank PDF in Acrobat 6, configure and

display the Layout Grid, and then start cranking out a form of your own

design. For more on converting Microsoft Office documents to PDF, see

Chapter 5.

Creating form field tables

Building a table of form fields is a snap. The fields can be all the same type or

different types, and the methods for creating a table vary slightly, depending

on which case is true. To create a table made up of form fields that are all the

same type, follow these steps:

1. Add a form field to your PDF in the area you want to serve as the

corner of your table.

See the “Adding Fields to Forms” section, at the beginning of this chap-

ter, for details.

2. Hold down the Ctrl key (the Option key on the Mac) and draw a mar-

quee around the single field to select it.

If you’re selecting one field only, it’s just as easy to click the field to

select it. Using the Ctrl key (Option key on Mac) is better for selecting

multiple fields and ensures you won’t create one big form field when

what you really want is to make a multiple selection.

3. Choose Advanced➪Forms➪Fields➪Create Multiple Copies or right-

click the selected field and choose Create Multiple Copies on the con-

text menu.

The Create Multiple Copies of Fields dialog box appears, as shown in

Figure 14-15.

4. Specify the layout for your form field table by choosing options in the

following areas of the Create Multiple Copies of Fields dialog box:

•Number of Fields: Use the spinner buttons or enter a value in the

Copy Selected Fields Down or Copy Selected Fields Across text

fields. If the Preview check box in the lower left corner of the

dialog box is selected, all changes made in this dialog box are dis-

played for preview in the current document behind the dialog box.

•Overall Size (All Fields): Use the spinner buttons or enter a value

in the Change Width or Change Height text fields to alter the size of

the fields in your table. The default values in these fields reflect the

size of the original field selected in the current document.

•Overall Position (All Fields): To move the entire table in the cur-

rent document to a new position, click the Up, Left, Right, or Down

buttons.

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Chapter 14: Creating Interactive Forms

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5. When you’re finished selecting options, click OK to close the Create

Multiple Copies of Fields dialog box and view your form table in the

current document.

To create a table made up of different field types, you need to vary the pre-

ceding steps slightly. Instead of creating a single field (as in Step 2), you need

to create an initial row or column of different field types that will serve as a

basis not only for the number of rows or columns that appear in your table

but also for how the different field types will occur in the table. After estab-

lishing that, you then individually select and copy each field type in the

Create Multiple Copies of Fields dialog box using the Copy Selected Fields

Down or Across options, depending on the original location (at the head of a

column or beginning of a row) of the selected field in the current document.

Creating fields for tables in the manner just described is not the same as

duplicating form fields (see the “Duplicating form fields” section, earlier in

this chapter). In this process, you give each field a unique name, which

allows a higher degree of individual editing choices. Therefore, it’s not the

method to use if you want to create a group of related radio buttons that

must have the same name. See the “Understanding the Options tab” section,

earlier in this chapter, for more on creating radio buttons.

Figure 14-15:

Specifying

and

previewing

the layout of

a form field

table in

the Create

Multiple

Copies

of Fields

dialog box.

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Part IV: PDFs as Electronic Documents

When your form is in the development stage and you’re beginning to accumu-

late a number of fields, it’s a good idea to take advantage of the Fields palette.

Choose View➪Navigation Tabs➪Fields to display the Fields palette, as shown

in Figure 14-16. The Fields palette is a floating navigation pane that provides a

hierarchical, icon view of the fields in a PDF. It allows you to remotely select,

rename, delete, edit the properties of, and more importantly, lock/unlock a

field. Locked fields can’t be moved or edited, which comes in handy when

you’ve gotten a number of fields just where you want them but are still fiddling

with others in the form. To access these commands, right-click (Control+click

on the Mac) a field icon in the Fields palette and choose the desired command

from the context menu that appears. To lock/unlock a field, choose Properties

on the context menu and select or deselect the Locked check box in the

Properties dialog box that appears.

What to do with all these fields?

As you go merrily along stacking up form fields and bringing your PDF form

design to fruition, you’ll want to know some of the handy features Acrobat 6

provides to ready your form for distribution over a company intranet or the

World Wide Web. In the following sections, you find out all about the features

that make an interactive form top-notch.

Figure 14-16:

Using the

floating

Fields

palette to

view and

navigate

form fields.

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Chapter 14: Creating Interactive Forms

Tabbing through a form

A form’s tabbing order is the order in which the user selects fields when he

or she presses the Tab key. This order is initiated when you add the first field

and continues from there as you add fields to a form. Now if you know this

ahead of time and are keeping track of the way you want the form filled out as

you add fields, everything will work out fine. If you’re like the rest of us, you’ll

probably have to set the tabbing order after you’ve finished adding fields to

your form. Here’s how:

1. Click the Pages tab on the Navigation pane to open the Pages palette

and select the page containing the form fields you wish to set tabbing

order for.

2. Choose Page Properties on the Options menu at the top of the

Navigation pane; in the Page Properties dialog box that appears, click

the Tab Order tab.

3. Select from the options on the Tab Order tab as follows:

•Select the Use Row Order radio button to tab through rows from

top to bottom and right to left.

•Select the Use Column Order radio button to tab through columns

from left to right and top to bottom.

•Select the Use Document Structure radio button to use the docu-

ment structure tree in a tagged PDF document. (See Chapter 1 for

c# pdf library nuget : Online pdf metadata viewer control software platform web page windows azure web browser Wiley%20Publishing%20-%20Adobe%20Acrobat%206%20PDF%20For%20Dummies%20%5B2003%5D33-part632