Adobe Flash chuyên nghiệp - p 29 ppsx

272 Lesson 7 Using Text Loading and displaying external text Information for a second property listing is saved in three additional text files in the 07Start folder.. You’ll add ActionSc

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3 The font used in the selected text box appears on the left side of the dialog box

(Times New Roman Bold) In the Character ranges section, select Uppercase,

Lowercase, Numerals, and Punctuation Click OK

The character ranges that you’ve selected will be embedded in the final SWF file

Any of the characters in those ranges will display properly in your final Flash

movie

4 Select the first linked text box named description_txt

5 In the Character section of the Properties inspector, click the Embed button

The Font Embedding dialog box appears The Numerals for Character range

should already be selected since you embedded those characters for the

Mortgage Calculator

6 In the Character ranges section, select Uppercase, Lowercase, and Punctuation

in addition to Numerals Click OK

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272 Lesson 7 Using Text

Loading and displaying external text

Information for a second property listing is saved in three additional text files in the 07Start folder You’ll add ActionScript to your movie that loads information from those text files

1 Open the file in the 07Start folder called 07SampleRealEstate2-address.txt

The file contains information about the address of another property listing

2 Choose Window > Code Snippets

The Code Snippets panel appears

3 Expand the Load and Unload folder and double-click the Load External Text option

A new layer named Actions is automatically inserted in the Timeline, and the Actions panel opens to display the inserted code snippet You’ll have to customize some of the code for it to work for this particular project

 Note: Make sure

you save external text

content as a text-only

file in an application

such as SimpleText

(Mac) or Notepad

(Windows) Do not

use Microsoft Word,

because Word adds

unnecessary additional

information to the file

that interferes with

its proper loading If

you use Word, always

choose Save As Text

Only.

Download from Library of Wow! ebook

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4 Replace the URL in line 12 of the code snippet with the filename of the property

address, 07SampleRealEstate2-address.txt Make sure you keep the double

quotation marks surrounding the filename

The code loads the file 07SampleRealEstate2-address.txt

5 Replace the trace command in line 19 of the code snippet with the following

code that assigns the new text to the text box named address_txt:

address_txt.text = textData;

The contents of the text file, 07SampleRealEstate2-address.txt, will be displayed

in the text box named address_txt

6 In the Code Snippets panel, double-click the Load External Text option again

7 A second code snippet appears in the Actions panel that loads a second text file

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8 Replace the URL in line 34 with the filename of the property details, 07SampleRealEstate2-info.txt, and replace the trace command in line 41 with the following code that assigns the new text to the text box named info_txt:

info_txt.text = textData;

9 In the Code Snippets panel, double-click the Load External Text option a third time and make the code replacements to load 07SampleRealEstate2-description

txt and display the text in description_txt

The three large blocks of code snippets appear in the Actions panel one after the other

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10 Choose Control > Test Movie > in Flash Professional

Flash loads the three external text files and displays the contents of the text files

in the targeted text boxes The listing now displays details for a property on

Cobble Hill Way instead of 7th Avenue

The photos and Mortgage Calculator still refer to the previous listing, so

the update to the new property is unfinished However, you can still see

in this incomplete example how flexible it is to develop a framework that

loads external text content and displays it in text boxes on the Stage Many

professional Flash projects rely on dynamic content fed from external assets

such as text files

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Review Questions

1 What is the extra SWZ file that is required for TLF Text?

2 What is the difference between Read Only, Selectable, and Editable TLF Text?

3 When do you need to embed fonts, and how do you do it?

4 How do you make text wrap around objects in a layout?

5 How do you change or read the contents of a text box?

Review Answers

1 The SWZ file is an external ActionScript library that contains information that supports

TLF Text If your Flash movie contains TLF Text, it needs the SWZ file to function

properly Flash automatically generates the additional file, which should always

accompany your SWF file

2 Read Only text is for display purposes and doesn’t allow the user to select or edit the

text Selectable text allows the user to select and copy text Editable text allows the user

to select, copy, delete, and edit the text The contents of all three kinds of text can be

changed dynamically with ActionScript

3 Fonts should be embedded for any text that may be edited or changed at runtime, which

means any Editable text box or any text box whose contents dynamically changes, except

for text that uses device fonts Choose Text > Font Embedding or click the Embed

button in the Properties inspector to display the Font Embedding dialog box In the

Font Embedding dialog box, you can choose which font, style, and range of characters to

embed in your Flash movie

4 You can wrap text around objects such as photos or graphic elements in a layout by

creating a series of linked text boxes, sometimes called threaded text containers The links

establish how overflow text from one text box flows into the next text box Create the first

text box, and then click on the small white box in its lower-right corner After the mouse

cursor changes to a text box icon, click and drag to add the next linked text box

5 A text box’s contents are determined by its text property, which accepts String values

To change or access the contents of a text box, you must first give the text box an instance

name in the Properties inspector Then, in ActionScript, you can reference the contents of

the text box with its instance name, followed by a dot, followed by the keyword text

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278

Sound and Video

Lesson overview

In this lesson, you’ll learn how to do the following:

• Import sound files

• Edit sound files

• Use Adobe Media Encoder CS5

• Understand video and audio encoding options

• Play external video from your Flash project

• Customize options on the video playback component

• Create and use cue points

• Work with video that contains alpha channels

• Embed video in your Flash project

This lesson will take approximately three hours to complete If needed, remove the previous lesson folder from your hard drive and copy the Lesson08 folder onto it

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280 Lesson 8 Working with sound and Video

getting Started

Start the lesson by viewing the finished animated zoo kiosk You’ll create the kiosk

by adding sound and video files to a project in Flash

1 Double-click the 08End.swf file in the Lesson08/08End folder to play the animation

View the movie of the polar bear with a short soundtrack of an African beat

A zoo director introduces himself, and as he speaks, Flash elements appear that are synchronized with his talk

2 Click a sound button to hear an animal sound

3 Click a thumbnail button to view a short movie about the animal Use the interface controls below the movie to pause, continue, or lower the volume

In this lesson, you’ll import audio files and put them on the Timeline to provide the short audio flourish You’ll also learn how to embed sounds in each button

You’ll use Adobe Media Encoder CS5 to compress and convert the video files to the appropriate format for Flash You’ll learn how to work with transparent back-grounds in video to create the silhouetted zoo director video You’ll also add cue points in the video of the zoo director to trigger other Flash animated elements

1 Double-click the 08Start.fla file in the Lesson08/08Start folder to open the initial project file in Flash

2 Choose File > Save As Name the file 08_workingcopy.fla, and save it in the

08Start folder Saving a working copy ensures that the original start file will be available if you want to start over

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