DIRECTORY Rules, Graphics, ViewerClasses, ViewerOps; RulesImpl: CEDAR PROGRAM IMPORTS Graphics, ViewerOps EXPORTS Rules SHARES ViewerOps = BEGIN OPEN ViewerClasses, Rules; Create: PUBLIC PROC [info: ViewerRec, color: Graphics.Color _ Graphics.black, paint: BOOL _ TRUE] RETURNS [rule: Rule] = BEGIN IF info.parent=NIL THEN RETURN; info.data _ NEW[Graphics.Color _ color]; info.border _ FALSE; -- we did promise uniform color RETURN[ViewerOps.CreateViewer[flavor: $Rule, info: info, paint: paint]]; END; RulePaint: PRIVATE PaintProc = BEGIN OPEN Graphics; x: REF Color = NARROW[self.data]; IF x = NIL THEN RETURN; SetColor[context, x^]; DrawBox[context, [0, 0, self.cw, self.ch]]; END; RuleSet: PRIVATE SetProc = BEGIN WITH data SELECT FROM x: REF Graphics.Color => self.data _ data; ENDCASE => ERROR; IF finalise THEN ViewerOps.PaintViewer[self, client, FALSE]; END; ruleClass: ViewerClasses.ViewerClass _ NEW[ViewerClasses.ViewerClassRec _ [ paint: RulePaint, set: RuleSet ]]; ViewerOps.RegisterViewerClass[$Rule, ruleClass]; -- plug in to Viewers END. tRulesImpl.mesa; Edited by McGregor on June 2, 1982 1:55 pm Last Edited by: Maxwell, January 3, 1983 12:28 pm ΚΣ– "Mesa" style˜JšΟc™Jš*™*Jšœ1™1J˜šΟk ˜ J˜J˜ J˜J˜ J˜—Jšœ ž ˜J˜Jšžœ˜Jšžœ˜ Jšžœ ˜J˜Jšžœžœ˜ J˜š ΟnœžœžœBžœžœ˜aJšžœž˜Jšžœ žœžœžœ˜Jšœ žœ˜(Jšœžœ˜4JšžœB˜HJšžœ˜J˜—šœ žœ žœžœ ˜3Jšœžœ žœ ˜!Jšžœžœžœžœ˜Jšœ˜Jšœ+˜+Jšžœ˜J˜—šœ žœ ž˜ šžœžœž˜Jšœžœ$˜*Jšžœžœ˜—Jšžœ žœ%žœ˜