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Applying external CSS to a text field

From: Flash CS3 Professional Beyond the Basics

Video: Applying external CSS to a text field

Now we'll talk about loading an external CSS file into Flash, and using that CSS file to style text in a dynamic text field. Before we go into Flash, if you have access to exercise files, find Chapter 03 and open the styles folder and open up style.css in a text editor. I'm going to open it in TextWrangler. This file is a very simple CSS file. This file defines two CSS selectors - styling for the a tag and styling selling for a:hover. In the last movie we talked to a lot about what a tag does. Remember the a tag is the html anchor tag or link tag The code I have selected here everywhere from the a, to the open and close curly braces, specifies a style for the a tag.

Applying external CSS to a text field

Now we'll talk about loading an external CSS file into Flash, and using that CSS file to style text in a dynamic text field. Before we go into Flash, if you have access to exercise files, find Chapter 03 and open the styles folder and open up style.css in a text editor. I'm going to open it in TextWrangler. This file is a very simple CSS file. This file defines two CSS selectors - styling for the a tag and styling selling for a:hover. In the last movie we talked to a lot about what a tag does. Remember the a tag is the html anchor tag or link tag The code I have selected here everywhere from the a, to the open and close curly braces, specifies a style for the a tag.

Notice the color here is set to CC0000. That's going to give us the same dark red color for our link that we had in the last movie. What's different here is a:hover. A:hover refers to a link when it's rolled over or hovered over with a mouse. In curly braces, there's the code that says text--decoration:underline. Text-decoration is a CSS property. The value is set using the : and the value is underline.

So the link will be red in Flash and then when we hover our mouse over the link there will be an underline under the link. I'm going to Tab over to Flash. In Flash I'm working in 05_CSS_External.fla. This file has a text field on the stage that we've been working with throughout this chapter. Let's go to the first keyframe of the actions layer and open the Actions panel by pressing Option+F9 on the Mac or F9 on the PC. The code that's already in the Actions panel simply loads the external text file htmlText.

Now let's talk about bringing an external CSS file into Flash. I'm going to go below line two. I'm going to create a variable. And this variable is going to be called cssLoader and this is going to load that CSS file that we looked at earlier. The data type is going to be URLLoader. Now set it equal to new URLLoader. Now, the great thing about ActionScript 3.0 is that loading an external text file is exactly the same as loading external CSS file.

And that's one great thing about this language, is that you can load an external text file, no matter what file type, in the same way. And that way you don't have to learn a different syntax for each type of file you're loading into Flash. So in the next line, create a variable called cssRequests, with a capital R. The data type will be URLRequest. Set that equal to a new URLRequest. Then in parentheses we'll pass in the path to our CSS file.

So in the parentheses I'm going to type an open and close quotes. Inside of the quote I'm going to type styles/ style.css Now, just like a loading our external text file, we have to tell Flash to load our external CSS file. What we want to do is load that file once the text files finish loading. So the way their code will work is that Flash will create all the variables that it needs to know to work with loading the text and CSS files.

Once Flash has loaded the text file, it will load our CSS file, and once the text and CSS files are loaded, then it will display the text inside of a text field styled using our CSS file. On the next line, let's create another variable to hold our CSS style and we'll call this variable style. The data type will be a StyleSheet. I'll give the value of the variable a new instance of the StyleSheet class.

Notice creating a new StyleSheet for internal CSS like we did in the last movie and for external CSS like we're doing in this movie is done in the same way. We create a new variable, give it a name, the data type is a StyleSheet, we set it to a new instance of the StyleSheet class. Now that we have our new variable set up, let's load our CSS file. The way that we're going to load the CSS file is we'll wait until the text file is fully loaded. Once the text file is loaded we'll load our CSS file. And then once the CSS file and the text file finish loading, then we'll put the text from the text file inside of the text field and we'll apply the CSS from the CSS file to the text in the text field.

Inside of the textLoaded function, select external_txt.htmlText = textLoader.data, on my code it's on line nine. Then I'm going to press Command+X on the Mac or Ctrl+X on the PC to cut the code. We'll paste it in just a minute. Inside of this function, the first thing we'll do is make our cssLoader load our CSS file. So type cssLoader, with a capital L, .load. And in parentheses pass in cssRequest, with a capital R.

On the next line we'll add an event listener to our css.Loader. So type cssLoader.addEventListener The event will be Event, capital E, .complete all caps Add a comma and a space and once the CSS file is loaded, we'll run a function called cssLoaded with a capital L. That way we can do something once the CSS file is finished. So now let's create the cssLoaded function. Below the textLoaded function, create a new function called cssLoaded. In the parentheses type event:Event with a capital E.

After the parenthesis :void because this function is not returning a value. Below the line of code we just wrote, type some open and closed curly braces and put your cursor inside of the curly braces. The first thing we need to do is associate the CSS file we loaded with our style variable that we created on my code on line 5. The way to do that is to use a method called parse CSS. So inside of the curly braces of the cssLoaded function type style.parseCSS, CSS are all capitalized.

Then inside of the parentheses we'll pass in cssLoader.data. The parse CSS method takes CSS text and essentially tells Flash to take a block of text and read it as if it were CSS code. Let's go to next line and the next thing we'll do is associate the StyleSheet we created with the text field on the stage. So type external_txt.stylesheet = style So this connects our StyleSheet with the text field on the stage. The last thing we have to do is take the text that's loaded from the external file and display it in our dynamic text field as html text.

To do that I'm going to press Command+V, or Ctrl+V on the PC, to paste the code that we cut earlier. Test the movie by pressing Command+Return on the Mac, Ctrl+Enter on the PC. Notice the link is red as we specified in our external CSS file. If you roll over the link, there's an underline. I'll close the Preview window. And there's a look at how to bring an external CSS file into Flash and apply it to text in a text field.

Show transcript

This video is part of

Image for Flash CS3 Professional Beyond the Basics
Flash CS3 Professional Beyond the Basics

79 video lessons · 25638 viewers

Todd Perkins
Author

 
Expand all | Collapse all
  1. 3m 30s
    1. Welcome
      1m 20s
    2. Getting the most from this training
      1m 20s
    3. Using the exercise files
      50s
  2. 15m 28s
    1. Managing digital assets
      4m 9s
    2. Creating custom keyboard shortcuts
      5m 1s
    3. Creating custom color swatches
      3m 41s
    4. Creating a custom template
      2m 37s
  3. 14m 38s
    1. Working with variables
      3m 41s
    2. Using functions
      3m 30s
    3. Working with events
      2m 11s
    4. Using event listeners
      2m 42s
    5. Working with arrays
      2m 34s
  4. 29m 41s
    1. Understanding dynamic text fields
      2m 37s
    2. Loading text from an external file
      6m 42s
    3. Reading HTML from a text field
      5m 29s
    4. Applying CSS with ActionScript
      7m 0s
    5. Applying external CSS to a text field
      7m 53s
  5. 45m 27s
    1. Masking dynamic text
      4m 59s
    2. Dragging the Scroll Bar
      7m 3s
    3. Calculating a scroll percent
      5m 20s
    4. Setting scroll boundaries
      4m 9s
    5. Connecting the ScrollBar to the text field
      2m 55s
    6. Easing the text with the ScrollBar
      4m 12s
    7. Scrolling the text with buttons
      2m 38s
    8. Animating the scrolling text with the buttons
      4m 26s
    9. Setting boundaries for the scrolling text
      4m 26s
    10. Easing the text using the buttons
      1m 37s
    11. Connecting the ScrollBar to the Scroll buttons
      3m 42s
  6. 20m 46s
    1. Organizing a complex object into layers
      1m 51s
    2. Duplicating MovieClips
      1m 29s
    3. Undocking the timeline
      1m 20s
    4. Animating a complex MovieClip
      4m 36s
    5. Creating an animated Hinge effect
      5m 13s
    6. Creating complex animations
      6m 17s
  7. 28m 1s
    1. Controlling objects with buttons
      4m 6s
    2. Understanding frame labels
      3m 25s
    3. Using buttons to navigate labeled frames
      2m 30s
    4. Nesting code within MovieClips
      5m 8s
    5. Adding sound to the application
      2m 34s
    6. Adding drag interactivity to the robot
      6m 1s
    7. Animating the dragged robot
      4m 17s
  8. 20m 3s
    1. Understanding components
      2m 30s
    2. Using components to setup a form
      3m 45s
    3. Setting up the form to send an email
      3m 38s
    4. Working with form variables
      6m 11s
    5. Skinning components
      3m 59s
  9. 27m 40s
    1. Using transparency in a video
      4m 16s
    2. Working with embedded video
      3m 38s
    3. Animating a VideoClip
      2m 53s
    4. Creating an advanced animation with video
      2m 40s
    5. Working with the bitmap data class
      3m 37s
    6. Working with the bitmap class
      1m 40s
    7. Copying the video to create a reflection
      1m 35s
    8. Reflecting the video
      2m 42s
    9. Enhancing a video reflection with a mask
      4m 39s
  10. 1h 38m
    1. Viewing the finished MP3 player
      1m 45s
    2. Understanding the project flow
      2m 52s
    3. Preparing to build the MP3 player
      5m 11s
    4. Understanding classes and packages
      5m 32s
    5. Creating the MP3 player class
      9m 59s
    6. Loading sounds from external files
      9m 20s
    7. Accessing ID3 tag information
      6m 11s
    8. Controlling sound playback with Play and Pause buttons
      11m 3s
    9. Changing tracks
      12m 1s
    10. Displaying the current volume
      9m 33s
    11. Changing the volume
      6m 40s
    12. Wiring the progress bar
      8m 4s
    13. Building the progress bar slider
      10m 4s
  11. 5m 36s
    1. Making Flash movies accessible
      1m 49s
    2. Adding a name and description to your Flash movie
      52s
    3. Accessibility and text fields
      2m 55s
  12. 12m 2s
    1. Understanding Flash Mobile
      35s
    2. Exploring Device Central
      1m 45s
    3. Updating Device Profiles
      1m 7s
    4. Creating a Flash file from Device Central
      2m 7s
    5. Creating and testing Flash Lite applications
      2m 48s
    6. Downloading the Flash Lite player for Windows Mobile
      1m 44s
    7. Getting a Flash Lite application onto your phone
      1m 56s
  13. 27s
    1. Goodbye
      27s

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