From f72c2cf29d36ae836c894bad29dfd965d1af0236 Mon Sep 17 00:00:00 2001 From: Hans Hagen Date: Sun, 18 Aug 2019 22:51:53 +0200 Subject: 2019-08-18 22:26:00 --- metapost/context/base/mpiv/mp-page.mpxl | 243 ++++++++++++++++++++++++++++++++ 1 file changed, 243 insertions(+) create mode 100644 metapost/context/base/mpiv/mp-page.mpxl (limited to 'metapost/context/base/mpiv/mp-page.mpxl') diff --git a/metapost/context/base/mpiv/mp-page.mpxl b/metapost/context/base/mpiv/mp-page.mpxl new file mode 100644 index 000000000..8a4b735e0 --- /dev/null +++ b/metapost/context/base/mpiv/mp-page.mpxl @@ -0,0 +1,243 @@ +%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 ; -- cgit v1.2.3