%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 / Hans Hagen \& Ton Otten}] %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 %D changes. if known context_page : endinput ; fi ; boolean context_page ; context_page := true ; if unknown PageStateAvailable : boolean PageStateAvailable ; PageStateAvailable := false ; fi ; if unknown OnRightPage : boolean OnRightPage ; OnRightPage := true ; fi ; if unknown OnOddPage : boolean OnOddPage ; OnOddPage := true ; fi ; if unknown InPageBody : boolean InPageBody ; InPageBody := false ; fi ; string CurrentLayout ; CurrentLayout := "default" ; PageNumber := 0 ; PaperHeight := 845.04684pt ; PaperWidth := 597.50787pt ; PrintPaperHeight := 845.04684pt ; PrintPaperWidth := 597.50787pt ; TopSpace := 71.12546pt ; BottomSpace := 0.0pt ; BackSpace := 71.13275pt ; CutSpace := 0.0pt ; MakeupHeight := 711.3191pt ; MakeupWidth := 426.78743pt ; TopHeight := 0.0pt ; TopDistance := 0.0pt ; HeaderHeight := 56.90294pt ; HeaderDistance := 0.0pt ; TextHeight := 597.51323pt ; FooterDistance := 0.0pt ; FooterHeight := 56.90294pt ; BottomDistance := 0.0pt ; BottomHeight := 0.0pt ; LeftEdgeWidth := 0.0pt ; LeftEdgeDistance := 0.0pt ; LeftMarginWidth := 75.58197pt ; LeftMarginDistance := 11.99829pt ; TextWidth := 426.78743pt ; RightMarginDistance := 11.99829pt ; RightMarginWidth := 75.58197pt ; RightEdgeDistance := 0.0pt ; RightEdgeWidth := 0.0pt ; PageOffset := 0.0pt ; PageDepth := 0.0pt ; LayoutColumns := 0 ; LayoutColumnDistance:= 0.0pt ; LayoutColumnWidth := 0.0pt ; 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 ; Margin := LeftMargin ; % obsolete Edge := LeftEdge ; % obsolete InnerMargin := RightMargin ; % obsolete InnerEdge := RightEdge ; % obsolete OuterMargin := LeftMargin ; % obsolete OuterEdge := LeftEdge ; % obsolete InnerMarginWidth := 0pt ; OuterMarginWidth := 0pt ; InnerMarginDistance := 0pt ; OuterMarginDistance := 0pt ; InnerEdgeWidth := 0pt ; OuterEdgeWidth := 0pt ; InnerEdgeDistance := 0pt ; OuterEdgeDistance := 0pt ; path Area [][] ; pair Location [][] ; path Field [][] ; path Page ; numeric HorPos ; numeric Hstep [] ; numeric Hsize [] ; numeric VerPos ; numeric Vstep [] ; numeric Vsize [] ; for VerPos=Top step 10 until Bottom: for HorPos=LeftEdge step 1 until RightEdge: Area[HorPos][VerPos] := origin--cycle ; Area[VerPos][HorPos] := Area[HorPos][VerPos] ; Location[HorPos][VerPos] := origin ; Location[VerPos][HorPos] := Location[HorPos][VerPos] ; Field[HorPos][VerPos] := origin--cycle ; Field[VerPos][HorPos] := Field[HorPos][VerPos] ; endfor ; endfor ; % def LoadPageState = % scantokens "input mp-state.tmp" ; % enddef ; def SwapPageState = if not OnRightPage : BackSpace := PaperWidth-MakeupWidth-BackSpace ; CutSpace := PaperWidth-MakeupWidth-CutSpace ; i := LeftMarginWidth ; LeftMarginWidth := RightMarginWidth ; RightMarginWidth := i ; i := LeftMarginDistance ; LeftMarginDistance := RightMarginDistance ; RightMarginDistance := i ; i := LeftEdgeWidth ; LeftEdgeWidth := RightEdgeWidth ; RightEdgeWidth := i ; i := LeftEdgeDistance ; LeftEdgeDistance := RightEdgeDistance ; RightEdgeDistance := i ; % these are now available as ..Width and ..Distance Margin := LeftMargin ; Edge := LeftEdge ; InnerMargin := RightMargin ; InnerEdge := RightEdge ; OuterMargin := LeftMargin ; OuterEdge := LeftEdge ; else : Margin := RightMargin ; Edge := RightEdge ; InnerMargin := LeftMargin ; InnerEdge := LeftEdge ; OuterMargin := RightMargin ; OuterEdge := RightEdge ; fi ; enddef ; def SetPageAreas = numeric Vsize[], Hsize[], Vstep[], Hstep[] ; 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 ; 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] ; 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 ; 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] ; 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] ; Location[HorPos][VerPos] := (Hstep[HorPos],Vstep[VerPos]) ; Location[VerPos][HorPos] := Location[HorPos][VerPos] ; Field[HorPos][VerPos] := Area[HorPos][VerPos] shifted Location[HorPos][VerPos] ; Field[VerPos][HorPos] := Field[HorPos][VerPos] ; endfor ; endfor ; Page := unitsquare xscaled PaperWidth yscaled PaperHeight ; enddef ; def BoundPageAreas = % pickup pencircle scaled 0pt ; bboxmargin := 0 ; setbounds currentpicture to Page ; enddef ; def StartPage = begingroup ; if PageStateAvailable : LoadPageState ; SwapPageState ; fi ; SetPageAreas ; BoundPageAreas ; enddef ; def StopPage = BoundPageAreas ; endgroup ; enddef ; % cover pages def BoundCoverAreas = % todo: add cropmarks bboxmargin := 0 ; setbounds currentpicture to Paper enlarged PaperBleed ; enddef ; def SetCoverAreas = if unknown SpineWidth : SpineWidth := 8mm ; fi ; if unknown PaperBleed : PaperBleed := 0 ; fi ; FrontPageWidth := PaperWidth ; BackPageWidth := PaperWidth ; PaperWidth := 2 * PaperWidth + SpineWidth ; FrontPageHeight := PaperHeight ; BackPageHeight := PaperHeight ; PaperHeight := PaperHeight ; SpineHeight := PaperHeight ; path Paper ; Paper := unitsquare xscaled PaperWidth yscaled PaperHeight ; path Spine ; Spine := unitsquare xscaled SpineWidth yscaled PaperHeight shifted (BackPageWidth,0); path BackPage ; BackPage := unitsquare xscaled BackPageWidth yscaled PaperHeight ; path FrontPage ; FrontPage := unitsquare xscaled FrontPageWidth yscaled PaperHeight shifted (BackPageWidth+SpineWidth,0) ; enddef ; def StartCover = begingroup ; if PageStateAvailable : LoadPageState ; % SwapPageState ; fi ; SetPageAreas ; SetCoverAreas ; BoundCoverAreas ; enddef ; def StopCover = BoundCoverAreas ; endgroup ; enddef ; % overlays: def OverlayBox = (unitsquare xyscaled (OverlayWidth,OverlayHeight)) enddef ; % handy def innerenlarged = hide(LoadPageState) if OnRightPage : leftenlarged else : rightenlarged fi enddef ; def outerenlarged = hide(LoadPageState) 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 ;