Tài liệu Thiết kế flash với flash cs5 part 20 docx

ptg Working with Groups, Symbols, and Instances Introduction All vector objects are editable. As the complexity of your doc- ument increases, you can protect artwork from being inad- vertently changed by storing it in special modes called groups and symbols. Groups provide a quick way to seal a shape by storing it in a bounding box that can only be edited by entering a group editing mode. Groups are created on the Stage and are not stored anywhere else. For items that are more global to your movie, you can convert them into sym- bols. The basis for interactivity and animation in Flash resides in its use of these reusable objects. You can create artwork and then save that artwork as a symbol that is stored in the Library of your Flash document. Symbols are an efficient way to build your movies because you can reuse these assets as instances on the Timeline, and Flash will only store it in your file once. Apply ActionScript to control a movie clip symbol instance and to add interactivity, place art inside of button symbols to create hit states, or apply a variety of transparency and color effects to instances on the Stage. The Library stores all of the reusable art and objects in your movie including symbols, sounds, video clips, bitmaps, and components. It can be organized and sorted for easy access to your movie's assets. A Library can also be shared with other Flash documents. 4 4 What You’ll Do Create Groups Arrange Multiple Groups Use the Library Create Symbols Edit in Symbol Mode Create Instances Change Symbol and Instance Behaviors Swap Symbol Instances Use Graphic and Button Symbols Enable and Disable Buttons Create Invisible Buttons Use Movie Clip Symbols Break Symbols Apart Modify Instance Properties Modify Instance Color Styles and Blends Use Advanced Color Options Use 9-Slice Scaling on a Movie Clip Symbol Set Highlight Color Preferences 131 From the Library of Wow! eBook From the Library of Michele Renth ptg 132 Chapter 4 When you group artwork on the Stage, you prevent it from interacting with other artwork on the same layer. Grouping essentially stores the artwork in a bounding box that can only be edited by entering a special group editing mode, which you can easily do by double-clicking the group. For example, if you draw a shape over another shape on the same layer, the strokes and fills of the second shape will cut through or replace the strokes and fills of the shape directly beneath it. Grouping your artwork prevents this from happening. You can also use grouping to combine several shapes into one group so you can manipulate them simultaneously. You can ungroup artwork or objects that have been grouped by using the ungroup option or by breaking them apart. Doing so removes the bounding box and the artwork can be freely edited. Creating Groups Group Artwork on the Same Layer Select the artwork on the Stage that you want to group with any of Flash's selection tools or methods. Click the Modify menu, and then click Group. TIMESAVER Press A +G (Mac) or Ctrl+G (Win) to quickly group selected objects or artwork. Ungroup Artwork Select the artwork on the Stage that you want to ungroup. Click the Modify menu, and then click Ungroup. TIMESAVER Press Shift+ A +G (Mac) or Shift+Ctrl+G (Win) to quickly ungroup selected objects or artwork. 2 1 2 1 1 Selected ungrouped artwork Selected grouped artwork in bounding box 2 1 Selected grouped artwork Artwork ungrouped or broken apart 2 See Also See “ Breaking Symbols Apart ” on page 155 for information on taking apart elements. From the Library of Wow! eBook ptg Chapter 4 Working with Groups, Symbols, and Instances 133 When objects are grouped they appear on top of shapes that aren't grouped on the same layer. Each subsequent group that is created will appear on top of the last. This is called the stacking order. Flash allows you to change this order with the Arrange command. You can send a group or symbol to the bottom of this stack or bring one at the bottom to the top. Additionally, you can change the order incrementally. Arranging Multiple Groups Change the Stacking Order Select the group whose stacking order you want to change. Click the Modify menu, point to Arrange, and then click: ◆ Bring To Front. The selected object is brought to the top of the stack. TIMESAVER Press Option+Shift+Up (Mac) or Ctrl+Shift+Up (Win). ◆ Bring Forward. The selected object is brought up one level in the stacking order. TIMESAVER Press A +Up (Mac) or Ctrl+Up (Win). ◆ Send Backward. The selected object is brought down one level in the stacking order. TIMESAVER Press A +Down (Mac) or Ctrl+Down (Win). ◆ Send To Back. The selected object is brought to the bottom of the stack. TIMESAVER Press Option+Shift+Down (Mac) or Ctrl+Shift+Down (Win). 2 1 1 2 Bring To Front From the Library of Wow! eBook ptg 134 Chapter 4 The Library panel is where all of the reusable assets in your Flash movie are stored. An asset is any artwork or object you have made into symbols, such as fonts, graphic symbols, movie clips, and buttons. Flash also stores bitmaps, sounds, video clips, and components in the Library. You can also open libraries from other Flash files to quickly transfer assets from one project to another. In Flash, you can use a sin- gle Library panel to view the library items of multiple Flash files at the same time. Opening the Library Panel Open the Library Click the Window menu, and then click Library. TIMESAVER Press A +L (Mac) or Ctrl+L (Win) to open the Library panel. Click the Document list arrow, and then select a library from a currently opened document. If you want one library selected regardless of what document is active, simply select the library from the Document list arrow menu, and click the Pin button. 3 2 1 1 New Library Panel Options menu 2 3 From the Library of Wow! eBook ptg Chapter 4 Working with Groups, Symbols, and Instances 135 Open Other Libraries Click the File menu, point to Import, and then click Open External Library. TIMESAVER Press A +Shift+O (Mac) or Ctrl+Shift+O (Win) to open the Open As Library dialog box. Navigate to the drive or folder where the Flash movie containing the Library is located. Select the library file. Click Open. The Library appears docked underneath the Library of the active project. 4 3 2 1 3 Imported Library 4 Did You Know? You can use sample common libraries included with Flash and create your own. To us e a co mmo n lib rary, click the Window menu, point to Common Libraries, select the library type you want from the submenu, and then drag items from the library to your docu- ment. To create a common library, cre- ate a Flash file (.fla) with a library containing the symbols you want, and then save the file to the Libraries folder located in the Flash application folder on your hard disk. 2 From the Library of Wow! eBook . artwork Artwork ungrouped or broken apart 2 See Also See “ Breaking Symbols Apart ” on page 155 for information on taking apart elements. From the Library. of your Flash document. Symbols are an efficient way to build your movies because you can reuse these assets as instances on the Timeline, and Flash will