%D \module %D [ file=mp-page.mpiv, %D version=1999.03.10, %D title=\CONTEXT\ \METAPOST\ graphics, %D subtitle=page enhancements, %D author=Hans Hagen, %D date=\currentdate, %D copyright={PRAGMA ADE \& \CONTEXT\ Development Team}] %C %C This module is part of the \CONTEXT\ macro||package and is %C therefore copyrighted by \PRAGMA. See mreadme.pdf for %C details. %D This module is rather preliminary and subjected to changes.In the process of %D moving to \METAFUN2\ this might change. if known context_page : endinput ; fi ; boolean context_page ; context_page := true ; def LoadPageState = enddef ; % just in case some old style uses it % Next we implement the the page area model. First some constants. LeftEdge := -4 ; Top := -40 ; LeftEdgeSeparator := -3 ; TopSeparator := -30 ; LeftMargin := -2 ; Header := -20 ; LeftMarginSeparator := -1 ; HeaderSeparator := -10 ; Text := 0 ; Text := 0 ; RightMarginSeparator := +1 ; FooterSeparator := +10 ; RightMargin := +2 ; Footer := +20 ; RightEdgeSeparator := +3 ; BottomSeparator := +30 ; RightEdge := +4 ; Bottom := +40 ; numeric HorPos ; HorPos := 0 ; numeric VerPos ; VerPos := 0 ; % Because metapost > 1.50 has dynamic memory management and is less efficient than % before we now delay calculations ... (on a document with 150 pages the time spent % in mp was close to 5 seconds which was only due to initialising the page related % areas, something that was hardly noticeable before. At least now we're back to % half a second for such a case. def SetPageVsize = numeric Vsize[] ; Vsize[Top] = TopHeight ; Vsize[TopSeparator] = TopDistance ; Vsize[Header] = HeaderHeight ; Vsize[HeaderSeparator] = HeaderDistance ; Vsize[Text] = TextHeight ; Vsize[FooterSeparator] = FooterDistance ; Vsize[Footer] = FooterHeight ; Vsize[BottomSeparator] = BottomDistance ; Vsize[Bottom] = BottomHeight ; enddef ; def SetPageHsize = numeric Hsize[] ; Hsize[LeftEdge] = LeftEdgeWidth ; Hsize[LeftEdgeSeparator] = LeftEdgeDistance ; Hsize[LeftMargin] = LeftMarginWidth ; Hsize[LeftMarginSeparator] = LeftMarginDistance ; Hsize[Text] = MakeupWidth ; Hsize[RightMarginSeparator] = RightMarginDistance ; Hsize[RightMargin] = RightMarginWidth ; Hsize[RightEdgeSeparator] = RightEdgeDistance ; Hsize[RightEdge] = RightEdgeWidth ; enddef ; def SetPageVstep = numeric Vstep[] ; Vstep[Top] = Vstep[TopSeparator] +Vsize[TopSeparator] ; Vstep[TopSeparator] = PaperHeight-TopSpace ; Vstep[Header] = Vstep[TopSeparator] -Vsize[Header] ; Vstep[HeaderSeparator] = Vstep[Header] -Vsize[HeaderSeparator] ; Vstep[Text] = Vstep[HeaderSeparator]-Vsize[Text] ; Vstep[FooterSeparator] = Vstep[Text] -Vsize[FooterSeparator] ; Vstep[Footer] = Vstep[FooterSeparator]-Vsize[Footer] ; Vstep[BottomSeparator] = Vstep[Footer] -Vsize[BottomSeparator] ; Vstep[Bottom] = Vstep[BottomSeparator]-Vsize[Bottom] ; enddef ; def SetPageHstep = numeric Hstep[] ; Hstep[LeftEdge] = Hstep[LeftEdgeSeparator] -Hsize[LeftEdge] ; Hstep[LeftEdgeSeparator] = Hstep[LeftMargin] -Hsize[LeftEdgeSeparator] ; Hstep[LeftMargin] = Hstep[LeftMarginSeparator] -Hsize[LeftMargin] ; Hstep[LeftMarginSeparator] = Hstep[Text] -Hsize[LeftMarginSeparator] ; Hstep[Text] = BackSpace ; Hstep[RightMarginSeparator] = Hstep[Text] +Hsize[Text] ; Hstep[RightMargin] = Hstep[RightMarginSeparator]+Hsize[RightMarginSeparator] ; Hstep[RightEdgeSeparator] = Hstep[RightMargin] +Hsize[RightMargin] ; Hstep[RightEdge] = Hstep[RightEdgeSeparator] +Hsize[RightEdgeSeparator] ; enddef ; def SetPageArea = path Area[][] ; for VerPos=Top step 10 until Bottom: for HorPos=LeftEdge step 1 until RightEdge: Area[HorPos][VerPos] := unitsquare xscaled Hsize[HorPos] yscaled Vsize[VerPos] ; Area[VerPos][HorPos] := Area[HorPos][VerPos] ; endfor ; endfor ; enddef ; def SetPageLocation = pair Location[][] ; for VerPos=Top step 10 until Bottom: for HorPos=LeftEdge step 1 until RightEdge: Location[HorPos][VerPos] := (Hstep[HorPos],Vstep[VerPos]) ; Location[VerPos][HorPos] := Location[HorPos][VerPos] ; endfor ; endfor ; enddef ; def SetPageField = path Field[][] ; for VerPos=Top step 10 until Bottom: for HorPos=LeftEdge step 1 until RightEdge: Field[HorPos][VerPos] := unitsquare xscaled Hsize[HorPos] yscaled Vsize[VerPos] shifted (Hstep[HorPos],Vstep[VerPos]) ; Field[VerPos][HorPos] := Field[HorPos][VerPos] ; endfor ; endfor ; enddef ; def Area = hide(SetPageArea ;) Area enddef ; def Location = hide(SetPageLocation ;) Location enddef ; def Field = hide(SetPageField ;) Field enddef ; def Vsize = hide(SetPageVsize ;) Vsize enddef ; def Hsize = hide(SetPageHsize ;) Hsize enddef ; def Vstep = hide(SetPageVstep ;) Vstep enddef ; def Hstep = hide(SetPageHstep ;) Hstep enddef ; vardef FrontPageWidth = PaperWidth enddef ; vardef BackPageWidth = PaperWidth enddef ; vardef CoverWidth = 2 * PaperWidth + SpineWidth enddef ; vardef CoverHeight = PaperHeight enddef ; vardef FrontPageHeight = PaperHeight enddef ; vardef BackPageHeight = PaperHeight enddef ; vardef SpineHeight = PaperHeight enddef ; def SetPagePage = path Page ; Page := unitsquare xscaled PaperWidth yscaled PaperHeight ; enddef ; def SetPageCoverPage = path CoverPage ; CoverPage := unitsquare xscaled CoverWidth yscaled CoverHeight ; enddef ; def SetPageSpine = path Spine ; Spine := unitsquare xscaled SpineWidth yscaled CoverHeight shifted (BackPageWidth,0) ; enddef ; def SetPageBackPage = path BackPage ; BackPage := unitsquare xscaled BackPageWidth yscaled CoverHeight ; enddef ; def SetPageFrontPage = path FrontPage ; FrontPage := unitsquare xscaled FrontPageWidth yscaled CoverHeight shifted (BackPageWidth+SpineWidth,0) ; enddef ; def Page = hide(SetPagePage ;) Page enddef ; def CoverPage = hide(SetPageCoverPage;) CoverPage enddef ; def Spine = hide(SetPageSpine ;) Spine enddef ; def BackPage = hide(SetPageBackPage ;) BackPage enddef ; def FrontPage = hide(SetPageFrontPage;) FrontPage enddef ; % pages def StartPage = begingroup ; setbounds currentpicture to Page ; enddef ; def StopPage = setbounds currentpicture to Page ; endgroup ; enddef ; % cover pages def StartCover = begingroup ; setbounds currentpicture to CoverPage enlarged PaperBleed ; enddef ; def StopCover = setbounds currentpicture to CoverPage enlarged PaperBleed ; endgroup ; enddef ; % overlays: def OverlayBox = (unitsquare xyscaled (OverlayWidth,OverlayHeight)) enddef ; % handy def innerenlarged = if OnRightPage : leftenlarged else : rightenlarged fi enddef ; def outerenlarged = if OnRightPage : rightenlarged else : leftenlarged fi enddef ; % obsolete % def llEnlarged (expr p,d) = (llcorner p shifted (-d,-d)) enddef ; % def lrEnlarged (expr p,d) = (lrcorner p shifted (+d,-d)) enddef ; % def urEnlarged (expr p,d) = (urcorner p shifted (+d,+d)) enddef ; % def ulEnlarged (expr p,d) = (ulcorner p shifted (-d,+d)) enddef ; % def Enlarged (expr p, d) = % ( % llEnlarged (p,d) -- % lrEnlarged (p,d) -- % urEnlarged (p,d) -- % ulEnlarged (p,d) -- % cycle % ) % enddef ; % for the moment we put these here: string RuleDirection ; RuleDirection := "" ; string RuleOption ; RuleOption := "" ; numeric RuleWidth ; RuleWidth := 0 ; numeric RuleHeight ; RuleHeight := 0 ; numeric RuleDepth ; RuleDepth := 0 ; numeric RuleH ; RuleH := 0 ; numeric RuleV ; RuleV := 0 ; numeric RuleThickness ; RuleThickness := 0 ; numeric RuleFactor ; RuleFactor := 0 ; numeric RuleOffset ; RuleOffset := 0 ; def RuleColor = (.5white) enddef ; def FakeWord(expr RuleWidth, RuleHeight, RuleDepth, RuleThickness) (text RuleColor) = fill unitsquare xscaled RuleWidth yscaled (RuleDepth-RuleThickness/2) withcolor RuleColor ; fill unitsquare xscaled RuleWidth yscaled (RuleHeight-RuleDepth-RuleThickness/2) shifted (0,RuleDepth+RuleThickness) withcolor RuleColor ; enddef ; def FakeRule(expr RuleWidth, RuleHeight, RuleDepth, RuleThickness) (text RuleColor) = fill unitsquare xscaled RuleWidth yscaled RuleHeight withcolor RuleColor ; enddef ;