Adobe 38039927 User Guide - Page 53

Control-Shift-Alt-click Windows or Command-Shift-Option-click Macintosh another object.

Page 53 highlights

ADOBE FIREWORKS CS3 48 User Guide To subtract pixels from a selection: ❖ Hold down Alt (Windows) or Option (Macintosh) and use a bitmap selection tool to select the pixel area to be punched out. Creating a marquee from intersecting marquees You can select pixels in an existing marquee by drawing a marquee that overlaps the original. To select a pixel area defined by the intersection of two marquees: 1 Hold down Alt+Shift (Windows) or Option+Shift (Macintosh) while creating a new marquee selection that overlaps the original marquee. 2 Release the mouse button. Only the pixels in the intersection area of the two marquees are selected. Using thumbnails and modifier keys to modify pixel selections With a bitmap selected, you can create a pixel selection on that bitmap using the opacity of any object or mask in the Layers panel. For more information about the Layers panel, see "Working with layers" on page 159. To create or replace a pixel selection on a selected bitmap using the opacity of an object: 1 In the Layers panel, position the pointer over the thumbnail of the object you want to use to create the pixel selection. 2 Hold down Alt (Windows) or Command (Macintosh). The pointer changes to indicate you are about to select the alpha channel, or the opaque area, of the object. 3 Click the thumbnail. A new pixel selection is created on the selected bitmap. To add to the current pixel selection: • Alt-Shift-click (Windows) or Command-Shift-click (Macintosh) the thumbnail of an object in the Layers panel to add the shape of its opaque area to the current pixel selection. When you position the pointer over the thumbnail and hold down the specified modifier keys, the pointer indicates that you are about to add to the pixel selection. To subtract from the current pixel selection: • Control-Alt-click (Windows) or Command-Option-click (Macintosh) the thumbnail of an object in the Layers panel to subtract the shape of its opaque area from the current pixel selection. When you position the pointer over the thumbnail and hold down the specified modifier keys, the pointer indicates that you are about to subtract from the pixel selection. To create a pixel selection on a selected bitmap from the intersection of overlapping objects: 1 Control-click (Windows) or Command-click (Macintosh) an object's thumbnail to select its alpha channel, or opaque area. The pointer changes to indicate you are about to select the alpha channel, or the opaque area, of the object. 2 Control-Shift-Alt-click (Windows) or Command-Shift-Option-click (Macintosh) another object.

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ADOBE FIREWORKS CS3
User Guide
48
To subtract pixels from a selection:
Hold down Alt (Windows) or Option (Macintosh) and use a bitmap selection tool to select the pixel area to be
punched out.
Creating a marquee from intersecting marquees
You can select pixels in an existing marquee by drawing a marquee that overlaps the original.
To select a pixel area defined by the intersection of two marquees:
1
Hold down Alt+Shift (Windows) or Option+Shift (Macintosh) while creating a new marquee selection that
overlaps the original marquee.
2
Release the mouse button.
Only the pixels in the intersection area of the two marquees are selected.
Using thumbnails and modifier keys to modify pixel selections
With a bitmap selected, you can create a pixel selection on that bitmap using the opacity of any object or mask in
the Layers panel. For more information about the Layers panel, see “Working with layers” on page 159.
To create or replace a pixel selection on a selected bitmap using the opacity of an object:
1
In the Layers panel, position the pointer over the thumbnail of the object you want to use to create the pixel
selection.
2
Hold down Alt (Windows) or Command (Macintosh).
The pointer changes to indicate you are about to select the alpha channel, or the opaque area, of the object.
3
Click the thumbnail.
A new pixel selection is created on the selected bitmap.
To add to the current pixel selection:
Alt-Shift-click (Windows) or Command-Shift-click (Macintosh) the thumbnail of an object in the Layers
panel to add the shape of its opaque area to the current pixel selection.
When you position the pointer over the thumbnail and hold down the specified modifier keys, the pointer
indicates that you are about to add to the pixel selection.
To subtract from the current pixel selection:
Control-Alt-click (Windows) or Command-Option-click (Macintosh) the thumbnail of an object in the
Layers panel to subtract the shape of its opaque area from the current pixel selection.
When you position the pointer over the thumbnail and hold down the specified modifier keys, the pointer
indicates that you are about to subtract from the pixel selection.
To create a pixel selection on a selected bitmap from the intersection of overlapping objects:
1
Control-click (Windows) or Command-click (Macintosh) an object’s thumbnail to select its alpha channel, or
opaque area.
The pointer changes to indicate you are about to select the alpha channel, or the opaque area, of the object.
2
Control-Shift-Alt-click (Windows) or Command-Shift-Option-click (Macintosh) another object.