IIMaskCapture.mesa
Copyright © 1985, 1986 by Xerox Corporation. All rights reserved.
Michael Plass, November 21, 1986 12:46:31 pm PST
Doug Wyatt, March 7, 1986 2:59:58 pm PST
DIRECTORY
II USING [Context, SampleMap, Transformation, XChar],
IIDevice USING [FontTuner],
IIMaskCache USING [CharMask],
IIFont USING [Font],
IIManhattan USING [Polygon],
SF USING [Box, BoxAction];
IIMaskCapture: CEDAR DEFINITIONS
CaptureChar:
PROC [font: IIFont.Font, char:
II.XChar, ratio:
REAL, fontTuner: IIDevice.FontTuner ←
NIL, metricsOnly:
BOOL ←
FALSE]
RETURNS [IIMaskCache.CharMask];
The transformation in font is into device coordinates, with x~s and y~f.
Returns NIL if the operator must be re-executed each time, and nothing can be said about the bounding box and/or width.
Returns culled variant if metricsOnly=TRUE.
Returns maskNotCacheable variant if the operator cannot be cached for some reason, but its bounding box and escapement are known.
Otherwise returns cached variant; raster IFF (size of raster rep) <= ratio*(size of runs rep).
CaptureBounds:
PROC [operator:
PROC [II.Context], m: II.Transformation]
RETURNS [
SF.Box];
Cant:
SIGNAL [why:
ATOM];
Raised by the following whenever a situation is detected where the result would not be well-defined; If checkColor is TRUE on the following, attempts to change color will rasie this signal.
CaptureBoxes:
PROC [operator:
PROC [
II.Context], m:
II.Transformation, boxAction:
SF.BoxAction, checkColor:
BOOL ←
FALSE];
CaptureBitmap:
PROC [operator:
PROC [II.Context], m: II.Transformation, checkColor:
BOOL ←
FALSE]
RETURNS [II.SampleMap];
CaptureManhattan:
PROC [operator:
PROC [II.Context], m: II.Transformation, checkColor:
BOOL ←
FALSE]
RETURNS [IIManhattan.Polygon];
END.