When
font smoothing, also called anti-aliasing,
is enabled, ATM uses 15 shades of intermediate
colors to blend PostScript® Type
1 font color with the background color
on screen. The actual number of intermediate
colors displayed on screen depends on
the number of available system colors.
On monitors set to display thousands
or more colors, ATM smooths both black
and color text on various background
colors. On monitors set to display 256
or fewer colors, ATM smooths only black
text.
When
you select (i.e., highlight) smoothed
text, QuickDraw (the screen rendering
language used by the Macintosh) swaps
the foreground color of the text with
the background color. All of the other
colors in between are left unchanged.
This produces a jagged halo around the
selected text. To reduce the severity
of this effect, you can change the highlight
color to a lighter color in the system's
Color control panel.
Because
ATM uses QuickDraw to smooth text, it
can smooth text only when an application
uses QuickDraw to display its text.
Some applications use QuickDraw to draw
an off-screen monochrome bitmap image,
then display their own color images
on screen. When an application uses
QuickDraw to draw on off-screen bitmap
image of a font (e.g., with colored
or skewed text), ATM cannot smooth the
fonts. For example, Deneba Canvas™
and Microsoft® PowerPoint®
do not support smoothed color text or
skewed text.
Font
smoothing is not supported in Adobe
Acrobat® versions earlier than
3.0 and MacDraw® Pro.
The
following Adobe applications have their
own font smoothing function, and
do not use ATM for this purpose: Adobe
Premiere (all versions), Adobe Illustrator
7 and greater, Adobe Photoshop 5.0 and
greater, Acrobat 4.0 and greater, ImageReady
1.0 and greater, ImageStyler 1.0 and
greater.
Font
smoothing is not supported in ClarisWorks™
when the monitor displays 256 colors
or fewer.
Some
applications (e.g., QuarkXPress®)
do not support smoothed text while you
are typing it. The text is smoothed
when the text box is updated