Adobe 13101332 User Guide - Page 371

Adobe Photoshop Help Using Help | Contents | Index Designing Web Pages Back 371 Layer-based slices are especially useful when working with rollovers. If you apply an effect to the layer-such as a drop shadow or glow-to create a rollover state, the slice automatically adjusts to encompass the new pixels. However, do not use a layer-based slice when you plan to move the layer over a large area of the image during an animation, because the slice dimension may exceed a useful size. To create a slice from a layer: 1 Select a layer in the Layers palette. 2 Choose Layer > New Layer Based Slice. Converting auto slices to user slices You can move, duplicate, combine, divide, resize, delete, arrange, align, and distribute user slices. You can also apply different optimization settings to user slices. In contrast, all auto slices in an image are linked and share the same optimization settings. This is because auto slices are regenerated every time you create or edit a user slice or layer-based slice. Converting an auto slice to a user slice prevents it from being changed when regeneration occurs. Dividing, combining, linking, and setting options for auto slices automatically converts them to user slices. To convert an auto slice to a user slice: 1 Select an auto slice. In ImageReady, you can select multiple slices. (See "Selecting slices" on page 373.) 2 Do one of the following: • (Photoshop) With the slice select tool selected, click Promote to User Slice in the options bar. • (ImageReady) Choose Slices > Promote to User-slice(s). Converting layer-based slices to user slices Because a layer-based slice is tied to the pixel content of a layer, the only way to move, combine, divide, resize, and align it is to edit the layer.You can convert a layer-based slice to a user slice to unlink it from the layer. To convert a layer-based slice to a user slice: 1 Select a layer-based slice. In ImageReady, you can select multiple slices. (See "Selecting slices" on page 373.) 2 Do one of the following: • (Photoshop) Click Promote to User Slice in the options bar. • (ImageReady) Choose Slices > Promote to User-slice(s). Viewing slices You can view slices in Photoshop, the Photoshop Save for Web dialog box, and ImageReady.The following characteristics can help you identify and differentiate between slices: Slice lines Define the boundary of the slice. Solid lines indicate that the slice is a user slice or layer-based slice; dotted lines indicate that the slice is an auto slice. Using Help | Contents | Index Back 371