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Oberon Text | 1996-01-29 | 22.2 KB | 527 lines | [TEXT/.Ob4] |
- Syntax10.Scn.Fnt
- Syntax10b.Scn.Fnt
- Syntax10i.Scn.Fnt
- MODULE TextPrinter; (** CAS/MH/HM 23.9.1993 **)
- IMPORT
- Files, Display, Fonts, Printer, Texts, TextFrames, Macintosh, Sys, SYSTEM;
- CONST
- Unit* = 3048; (**unit for a 300 dpi printer**)
- unit = TextFrames.Unit;
- mm = TextFrames.mm; Scale = mm DIV 10;
- gridAdj = TextFrames.gridAdj;
- leftAdj = TextFrames.leftAdj; rightAdj = TextFrames.rightAdj; AdjMask = {leftAdj, rightAdj};
- pageBreak = TextFrames.pageBreak;
- twoColumns = TextFrames.twoColumns;
- AdjustSpan = 30; MinTabWidth = 1 * Scale; StdTabWidth = 4 * mm;
- ColumnGap = 7*mm;
- TAB = 9X; CR = 0DX;
- MaxDict = 32; MaxLine = 512;
- TYPE
- PrintMsg* = RECORD (Texts.ElemMsg)
- prepare*: BOOLEAN;
- indent*: LONGINT; (**prepare => width already consumed in line, in units**)
- fnt*: Fonts.Font;
- col*: SHORTINT;
- pos*: LONGINT; (**position in host text**)
- X0*, Y0*, pno*: INTEGER (**receiver origin in screen space; page number**)
- END;
- PrintLine = RECORD
- eot: BOOLEAN; (*marked to skip, contains end of text*)
- indent: LONGINT;
- w, h, dsr: INTEGER; (*bounding box clipped to frame*)
- nob: INTEGER; (*number of contained blanks; > 0 if text line wraps around*)
- org, len, span: LONGINT; (*len w/o; span w/ trailing CR or white space, if any*)
- pbeg: LONGINT (*position of corresponding parc*)
- END;
- P: TextFrames.Parc;
- pbeg: LONGINT;
- R: Texts.Reader;
- nextCh: CHAR;
- fname: ARRAY 32 OF CHAR;
- fonts: RECORD
- num: SHORTINT;
- dict: ARRAY MaxDict OF Fonts.Font;
- dx: ARRAY MaxDict, 256 OF SHORTINT
- END;
- line: RECORD
- first: BOOLEAN;
- fno: SHORTINT;
- col: SHORTINT;
- px, x, y: INTEGER;
- len: INTEGER;
- buf: ARRAY MaxLine OF CHAR
- END;
- TextWidth: PROCEDURE (textbuf: LONGINT; firstByte, byteCount: INTEGER) : INTEGER;
- PROCEDURE Min (x, y: LONGINT): LONGINT;
- BEGIN
- IF x < y THEN RETURN x ELSE RETURN y END
- END Min;
- PROCEDURE Max (x, y: INTEGER): INTEGER;
- BEGIN
- IF x > y THEN RETURN x ELSE RETURN y END
- END Max;
- PROCEDURE Append (VAR s1: ARRAY OF CHAR; i: INTEGER; s2: ARRAY OF CHAR);
- VAR j: INTEGER;
- BEGIN j := 0; (*s1 large enough*)
- WHILE s2[j] # 0X DO s1[i] := s2[j]; INC(i); INC(j) END;
- s1[i] := 0X
- END Append;
- (** Printer Metrics **)
- PROCEDURE SetMetrics (fno: SHORTINT; fnt: Fonts.Font);
- VAR f: Files.File; r: Files.Rider; pat: Display.Pattern;
- off, i, j, k, dx, x, y, w, h: INTEGER; size, s: SHORTINT; mod, m: CHAR;
- name: ARRAY 32 OF CHAR; found: BOOLEAN;
- BEGIN COPY(fnt.name, name);
- i := 0; WHILE name[i] > "9" DO INC(i) END;
- j := i; WHILE ("0" <= name[j]) & (name[j] < "9") DO INC(j) END;
- k := j; WHILE (name[k] # ".") & (name[k] # 0X) DO INC(k) END;
- IF k > j THEN mod := name[k-1] ELSE mod := " " END;
- size := 0; k := i; WHILE i < j DO size := 10 * size + SHORT(ORD(name[i]) - 30H); INC(i) END;
- Append(name, k, ".Lm3.Fnt"); f := Files.Old(name);
- IF f # NIL THEN Files.Set(r, f, 2); Files.ReadInt(r, off); Files.Set(r, f, 6); i := -1;
- REPEAT INC(i); Files.Read(r, s); Files.Read(r, m) UNTIL (s = size) & (m = mod) OR (Files.Pos(r) >= off);
- IF (s = size) & (m = mod) THEN Files.Set(r, f, off + i * 260 + 4); Files.ReadBytes(r, fonts.dx[fno], 256)
- ELSE f := NIL
- END
- END;
- IF f = NIL THEN i := 0; (*no printer metrics file found - construct from screen metrics*)
- Macintosh.prGetMetrics (fnt.name, fonts.dx[fno], found);
- IF ~found THEN
- WHILE i < 256 DO Display.GetChar(fnt.raster, CHR(i), dx, x, y, w, h, pat);
- fonts.dx[fno, i] := SHORT(SHORT(LONG(dx) * unit * 12 DIV 10 DIV Unit)); INC(i)
- (*+20% : heuristical correction*)
- END
- END
- END
- END SetMetrics;
- PROCEDURE FontNo* (fnt: Fonts.Font): SHORTINT;
- VAR fno: SHORTINT;
- BEGIN fno := 0; fonts.dict[fonts.num] := fnt;
- WHILE fonts.dict[fno] # fnt DO INC(fno) END;
- IF fno = fonts.num THEN SetMetrics(fno, fnt); INC(fonts.num) END;
- RETURN fno
- END FontNo;
- PROCEDURE Font* (fno: SHORTINT): Fonts.Font;
- BEGIN RETURN fonts.dict[fno]
- END Font;
- PROCEDURE DX* (fno: SHORTINT; ch: CHAR): LONGINT;
- BEGIN RETURN LONG(LONG(fonts.dx[fno, ORD(ch)])) * Unit
- END DX;
- PROCEDURE Get* (fno: SHORTINT; ch: CHAR; VAR dx, x, y, w, h: LONGINT);
- VAR pat: Display.Pattern; dx0, x0, y0, w0, h0: INTEGER;
- BEGIN Display.GetChar(fonts.dict[fno].raster, ch, dx0, x0, y0, w0, h0, pat);
- x := LONG(x0) * unit; y := LONG(y0) * unit; h := LONG(h0) * unit;
- dx := LONG(LONG(fonts.dx[fno, ORD(ch)])) * Unit; w := dx
- END Get;
- PROCEDURE GetChar* (fno: SHORTINT; targetUnit: LONGINT; ch: CHAR;
- VAR pdx: LONGINT; VAR dx, x, y, w, h: INTEGER; VAR pat: Display.Pattern);
- BEGIN Display.GetChar(fonts.dict[fno].raster, ch, dx, x, y, w, h, pat);
- x := SHORT(x * LONG(unit) DIV targetUnit); y := SHORT(y * LONG(unit) DIV targetUnit);
- h := SHORT(h * LONG(unit) DIV targetUnit);
- pdx := LONG(LONG(fonts.dx[fno, ORD(ch)])) * Unit;
- dx := SHORT(pdx DIV targetUnit); w := dx
- END GetChar;
- PROCEDURE InitFonts*;
- VAR fno: SHORTINT;
- BEGIN (* fonts.num := 0; fno := FontNo(Fonts.Default) *)
- END InitFonts;
- PROCEDURE Width (fno: SHORTINT; VAR s: ARRAY OF CHAR): INTEGER;
- VAR i, w: INTEGER;
- BEGIN i := 0; w := 0;
- WHILE s[i] # 0X DO INC(w, LONG(fonts.dx[fno, ORD(s[i])]) ); INC(i) END;
- RETURN w
- END Width;
- PROCEDURE GetPrintChar (fnt: Fonts.Font; ch: CHAR; VAR fno: SHORTINT; VAR dx, x, y, w, h: INTEGER);
- VAR pat: Display.Pattern;
- BEGIN Display.GetChar(fnt.raster, ch, dx, x, y, w, h, pat);
- x := SHORT(x * LONG(unit) DIV Unit); y := -SHORT((-y) * LONG(unit) DIV Unit);
- h := SHORT(h * LONG(unit) DIV Unit);
- fno := FontNo(fnt); dx := fonts.dx[fno, ORD(ch)]; w := dx
- END GetPrintChar;
- PROCEDURE Tab (dw: INTEGER; VAR dx: INTEGER); (*P set*)
- VAR i, n: INTEGER; w: LONGINT;
- BEGIN i := 0; n := P.nofTabs; w := LONG(dw) * Unit + MinTabWidth;
- IF dw < 0 THEN dx := -dw
- ELSE
- WHILE (i < n) & (P.tab[i] < w) DO INC(i) END;
- IF i < n THEN dx := SHORT((P.tab[i] - LONG(dw) * Unit) DIV Unit)
- ELSE dx := StdTabWidth DIV Unit
- END
- END
- END Tab;
- PROCEDURE Offset (): INTEGER; (*R set*)
- BEGIN
- IF R.voff = 0 THEN RETURN 0
- ELSE RETURN SHORT(R.fnt.height * R.voff * LONG(unit) DIV 64 DIV Unit)
- END
- END Offset;
- PROCEDURE MeasureSpecial (pno, dw: INTEGER; VAR fno: SHORTINT; VAR dx, x, y, w, h: INTEGER);
- (*P, R, nextCh set*)
- VAR e: Texts.Elem; i: INTEGER; msg: PrintMsg;
- BEGIN
- IF nextCh = " " THEN GetPrintChar(R.fnt, nextCh, fno, dx, x, y, w, h);
- x := 0; y := 0; w := dx; h := 0
- ELSIF nextCh = TAB THEN Tab(dw, dx); x := 0; y := 0; w := dx; h := 0
- ELSIF R.elem # NIL THEN e := R.elem;
- msg.prepare := TRUE; msg.indent := LONG(dw) * Unit;
- msg.fnt := R.fnt; msg.col := R.col; msg.pos := Texts.Pos(R) - 1; msg.pno := pno;
- msg.Y0 := -SHORT(P.dsr DIV Unit);
- e.handle(e, msg);
- w := SHORT(e.W DIV Unit); dx := w; h := SHORT(e.H DIV Unit);
- x := 0; y := msg.Y0
- ELSE GetPrintChar(R.fnt, nextCh, fno, dx, x, y, w, h)
- END
- END MeasureSpecial;
- PROCEDURE GetSpecial (VAR n: INTEGER; maxW, cn, ddx, dw: INTEGER;
- VAR fno: SHORTINT; VAR dx, x, y, w, h: INTEGER); (*P, R, nextCh set*)
- VAR e: Texts.Elem;
- BEGIN
- IF nextCh = " " THEN GetPrintChar(R.fnt, nextCh, fno, dx, x, y, w, h);
- x := 0; y := 0; INC(dx, ddx); INC(n); IF n <= cn THEN INC(dx) END; (*space correction for block adjustment*)
- w := dx; h := 0
- ELSIF nextCh = TAB THEN Tab(dw, dx); x := 0; y := 0; w := dx; h := 0
- ELSIF R.elem # NIL THEN e := R.elem;
- IF e IS TextFrames.Parc THEN w := SHORT(Min(P.width DIV Unit, maxW)); e.W := LONG(w) * Unit
- ELSE w := SHORT(e.W DIV Unit)
- END;
- dx := w; x := 0; y := -SHORT(P.dsr DIV Unit); h := SHORT(e.H DIV Unit)
- ELSE GetPrintChar(R.fnt, nextCh, fno, dx, x, y, w, h)
- END
- END GetSpecial;
- PROCEDURE AdjustMetrics (T: Texts.Text; VAR t: PrintLine; left: INTEGER; VAR pw, tw, ddx, cn: INTEGER);
- (*sets P, pbeg*)
- BEGIN pw := left; tw := t.w; ddx := 0; cn := 0;
- TextFrames.ParcBefore(T, t.org, P, pbeg);
- IF pbeg # t.org THEN
- INC(pw, SHORT((P.left + t.indent) DIV Unit));
- DEC(tw, SHORT(t.indent DIV Unit));
- IF leftAdj IN P.opts THEN
- IF (rightAdj IN P.opts) & (t.nob > 0) THEN
- tw := SHORT((P.width - t.indent) DIV Unit); ddx := (tw - t.w) DIV t.nob; cn := (tw - t.w) MOD t.nob
- END
- ELSIF rightAdj IN P.opts THEN INC(pw, SHORT(P.width DIV Unit) - t.w)
- ELSE (*center*) INC(pw, (SHORT(P.width DIV Unit) - t.w) DIV 2)
- END
- END
- END AdjustMetrics;
- (* Printer Line Casting *)
- PROCEDURE MeasureLine (T: Texts.Text; pno, maxW: INTEGER; VAR t: PrintLine); (*R, nextCh set*)
- VAR len, bklen, d: LONGINT; eol: BOOLEAN; fno: SHORTINT;
- nob, bknob, width, minY, bkminY, maxY, bkmaxY, tw, bktw, lsp, dsr, dx, x, y, w, h: INTEGER;
- R1: Texts.Reader; peekCh: CHAR;
- BEGIN len := 0; nob := 0; bklen := -999; tw := 0; dx := 0; minY := 0; maxY := 0;
- TextFrames.ParcBefore(T, t.org, P, pbeg);
- lsp := SHORT(P.lsp DIV Unit); dsr := SHORT(P.dsr DIV Unit); width := SHORT(P.width DIV Unit);
- t.indent := 0;
- IF t.org > 0 THEN Texts.OpenReader(R1, T, t.org - 1); Texts.Read(R1, peekCh);
- IF (peekCh = CR) OR (R1.elem # NIL) & (R1.elem IS TextFrames.Parc) THEN t.indent := P.first END;
- END;
- DEC(width, SHORT(t.indent DIV Unit));
- LOOP INC(tw, dx);
- IF R.eot OR (nextCh = CR) THEN nob := 0; eol := ~R.eot; EXIT END;
- IF nextCh <= " " THEN MeasureSpecial(pno, tw + SHORT(t.indent DIV Unit), fno, dx, x, y, w, h)
- ELSE GetPrintChar(R.fnt, nextCh, fno, dx, x, y, w, h)
- END;
- IF tw + dx > width THEN d := len - bklen;
- IF (0 <= d) & (d < AdjustSpan) & (nextCh > " ") THEN eol := TRUE;
- Texts.OpenReader(R, T, Texts.Pos(R) - d);
- nob := bknob; len := bklen; tw := bktw; minY := bkminY; maxY := bkmaxY
- ELSIF len = 0 THEN (*force at least one character on each line*)
- INC(len); INC(y, Offset()); minY := SHORT(Min(minY, y)); maxY := Max(maxY, y + h);
- Texts.Read(R, nextCh); eol := FALSE
- ELSE eol := (nextCh <= " ") & (nextCh # Texts.ElemChar)
- END;
- EXIT
- END;
- IF (nextCh <= " ") & (nextCh # Texts.ElemChar) THEN
- bknob := nob; bklen := len; bktw := tw; bkminY := minY; bkmaxY := maxY;
- IF nextCh = " " THEN INC(nob) END
- END;
- INC(len); INC(y, Offset()); minY := SHORT(Min(minY, y)); maxY := Max(maxY, y + h);
- Texts.Read(R, nextCh)
- END;
- IF gridAdj IN P.opts THEN
- WHILE dsr < -minY DO INC(dsr, lsp) END;
- t.h := Max(lsp, dsr + maxY); INC(t.h, (-t.h) MOD lsp)
- ELSE dsr := Max(dsr, -minY); t.h := Max(lsp, dsr + maxY)
- END;
- t.len := len; t.w := SHORT(Min(tw, maxW)); t.dsr := dsr; t.nob := nob; t.eot := R.eot; t.pbeg := pbeg;
- IF eol THEN Texts.Read(R, nextCh); t.span := len + 1 ELSE t.span := len END
- END MeasureLine;
- (** Printer Page Placement **)
- PROCEDURE FlushLine;
- VAR red, green, blue: INTEGER;
- BEGIN
- IF line.len > 0 THEN line.buf[line.len] := 0X; line.len := 0;
- Display.GetColor (line.col, red, green, blue);
- Printer.UseColor (red, green, blue);
- IF line.first THEN Printer.String(line.px, line.y, line.buf, fonts.dict[line.fno].name); line.first := FALSE
- ELSE Printer.ContString(line.buf, fonts.dict[line.fno].name)
- END
- END
- END FlushLine;
- PROCEDURE LengthMismatch (ch: CHAR; fno: SHORTINT) : BOOLEAN;
- VAR len1, len2, i: INTEGER;
- BEGIN
- line.buf[line.len] := ch;
- len1 := 0;
- FOR i := 0 TO line.len DO len1 := len1 + fonts.dx[fno, ORD(line.buf[i])] END;
- len2 := TextWidth (SYSTEM.ADR (line.buf[0]), 0, line.len + 1);
- RETURN len1 # len2
- END LengthMismatch;
- PROCEDURE PlaceChar (ch: CHAR; fno, col: SHORTINT; x, y, dx: INTEGER);
- BEGIN
- IF line.len > 0 THEN
- IF (x # line.x) OR (y # line.y) OR LengthMismatch (ch, fno) THEN FlushLine; line.first := TRUE; line.px := x
- ELSIF fno # line.fno THEN FlushLine
- ELSIF col # line.col THEN FlushLine
- END
- ELSE line.px := x
- END;
- line.fno := fno; line.col := col; line.x := x + dx; line.y := y; line.buf[line.len] := ch; INC(line.len)
- END PlaceChar;
- PROCEDURE PlaceChar (ch: CHAR; fno: SHORTINT; x, y, dx: INTEGER);
- BEGIN
- IF line.len > 0 THEN
- FlushLine; line.first := TRUE; line.px := x
- ELSE line.px := x
- END;
- line.fno := fno; line.x := x + dx; line.y := y; line.buf[line.len] := ch; INC(line.len)
- END PlaceChar;
- PROCEDURE PlaceSpecial (fno: SHORTINT; pno, nob, px, py, x, y, dx: INTEGER); (*R, nextCh set*)
- VAR e: Texts.Elem; msg: PrintMsg;
- BEGIN
- IF (nextCh = " ") & (P.opts * AdjMask = AdjMask) & (nob > 0) OR (nextCh = TAB) THEN (*skip*)
- ELSIF R.elem # NIL THEN e := R.elem;
- FlushLine; line.first := TRUE;
- msg.prepare := FALSE;
- msg.fnt := R.fnt; msg.col := R.col; msg.pos := Texts.Pos(R) - 1;
- msg.X0 := px + x; msg.Y0 := py + y; msg.pno := pno;
- e.handle(e, msg)
- ELSE PlaceChar(nextCh, fno, R.col, px, py, dx)
- END
- END PlaceSpecial;
- PROCEDURE PlaceLine (T: Texts.Text; pno: INTEGER; VAR t: PrintLine; left, width, py: INTEGER);
- VAR i: LONGINT; n, cn, lm, rm, px, pw, tw, ddx, dx, x, y, w, h: INTEGER; fno: SHORTINT;
- BEGIN Texts.OpenReader(R, T, t.org); AdjustMetrics(T, t, left, pw, tw, ddx, cn);
- lm := left + SHORT(P.left DIV Unit); rm := left + width; px := pw; INC(py, t.dsr); i := 0; n := 0;
- line.first := TRUE; line.len := 0;
- WHILE i < t.len DO Texts.Read(R, nextCh);
- IF nextCh <= " " THEN GetSpecial(n, width, cn, ddx, px - lm, fno, dx, x, y, w, h)
- ELSE GetPrintChar(R.fnt, nextCh, fno, dx, x, y, w, h)
- END;
- IF px + dx (* x + w *) <= rm THEN
- IF nextCh <= " " THEN PlaceSpecial(fno, pno, t.nob, px, py, x, y + Offset(), dx)
- ELSE PlaceChar(nextCh, fno, R.col, px, py + Offset(), dx)
- END;
- INC(px, dx); INC(i)
- ELSE i := t.len
- END
- END;
- FlushLine
- END PlaceLine;
- PROCEDURE PlaceHeader* (headerX, headerY, headerW: INTEGER;
- pno: INTEGER; fnt: Fonts.Font; VAR header: ARRAY OF CHAR; alt: BOOLEAN);
- VAR i, j: INTEGER; fno: SHORTINT; digits, pageno: ARRAY 16 OF CHAR;
- BEGIN alt := alt & ~ODD(pno); fno := FontNo(fnt);
- IF (pno >= 0) OR (pno < -30) THEN pno := ABS(pno); i := 0; j := 0;
- REPEAT digits[i] := CHR(pno MOD 10 + 30H); INC(i); pno := pno DIV 10 UNTIL pno = 0;
- REPEAT DEC(i); pageno[j] := digits[i]; INC(j) UNTIL i = 0;
- pageno[j] := 0X
- ELSE pno := ABS(pno); i := 0;
- WHILE pno >= 10 DO DEC(pno, 10); pageno[i] := "x"; INC(i) END;
- CASE pno OF
- 0:
- | 1..3: WHILE pno > 0 DO DEC(pno); pageno[i] := "i"; INC(i) END
- | 4: pageno[i] := "i"; INC(i); pageno[i] := "v"; INC(i)
- | 5..8: DEC(pno, 5); pageno[i] := "v"; INC(i);
- WHILE pno > 0 DO DEC(pno); pageno[i] := "i"; INC(i) END
- | 9: pageno[i] := "i"; INC(i); pageno[i] := "x"; INC(i)
- END;
- pageno[i] := 0X
- END;
- IF alt THEN Printer.String(headerX, headerY, pageno, fonts.dict[fno].name);
- IF header[0] # 0X THEN
- Printer.String(headerX + headerW - Width(fno, header), headerY, header, fonts.dict[fno].name)
- END
- ELSE Printer.String(headerX + headerW - Width(fno, pageno), headerY, pageno, fonts.dict[fno].name);
- IF header[0] # 0X THEN Printer.String(headerX, headerY, header, fonts.dict[fno].name) END
- END
- END PlaceHeader;
- PROCEDURE ClaimPrinter; (*send null-command to keep printer connection alive*)
- VAR i: INTEGER; dmy: ARRAY 32 OF CHAR;
- BEGIN dmy[0] := 0X; i := 10;
- WHILE i > 0 DO Printer.String(0, 0, dmy, fname); DEC(i) END
- END ClaimPrinter;
- (*PROCEDURE PrintDraft* (t: Texts.Text; header: ARRAY OF CHAR; copies: INTEGER);
- CONST left = 160; bot = 100; lsp = 32;
- VAR top, y, pno, i: INTEGER; r: Texts.Reader; ch: CHAR; s: ARRAY 256 OF CHAR;
- PROCEDURE PrintHeader;
- BEGIN
- Printer.String(left, Printer.PageHeight - 125, header, Fonts.Default.name);
- IF pno < 10 THEN s[0] := " " ELSE s[0] := CHR(30H + pno MOD 100 DIV 10) END;
- s[1] := CHR(30H + pno MOD 10); s[2] := 0X;
- Printer.String(Printer.PageWidth - 236, Printer.PageHeight - 125, s, Fonts.Default.name)
- END PrintHeader;
- BEGIN
- pno := 0; top := Printer.PageHeight - 225; y := top;
- Printer.UseListFont(Fonts.Default.name);
- PrintHeader;
- Texts.OpenReader(r, t, 0);
- REPEAT Texts.Read(r, ch);
- i := 0; WHILE ~r.eot & (ch # CR) DO s[i] := ch; INC(i); Texts.Read(r, ch) END;
- s[i] := 0X;
- Printer.String(left, y, s, Fonts.Default.name);
- y := y - lsp;
- IF y < bot THEN Printer.Page(copies); INC(pno); PrintHeader; y := top END
- UNTIL r.eot;
- IF y < top THEN Printer.Page(copies) END
- END PrintDraft;*)
- PROCEDURE PrintDraft* (t: Texts.Text; header: ARRAY OF CHAR; copies: INTEGER);
- CONST left = 160; bot = 100; lsp = 32; maxLineLen = 120;
- VAR top, y, pno, i, b: INTEGER; org: LONGINT; r: Texts.Reader; ch: CHAR; s: ARRAY maxLineLen + 1 OF CHAR;
- PROCEDURE PrintHeader;
- BEGIN
- Printer.String(left, Printer.PageHeight - 125, header, Fonts.Default.name);
- IF pno < 10 THEN s[0] := " " ELSE s[0] := CHR(30H + pno MOD 100 DIV 10) END;
- s[1] := CHR(30H + pno MOD 10); s[2] := 0X;
- Printer.String(Printer.PageWidth - 236, Printer.PageHeight - 125, s, Fonts.Default.name)
- END PrintHeader;
- BEGIN
- pno := 0; top := Printer.PageHeight - 225; y := top;
- Printer.UseListFont(Fonts.Default.name);
- PrintHeader;
- Texts.OpenReader(r, t, 0);
- REPEAT
- org := Texts.Pos(r); Texts.Read(r, ch); i := 0; b := 0;
- WHILE ~r.eot & (ch # CR) & (i < maxLineLen) DO
- IF ch = " " THEN b := i END;
- s[i] := ch; INC(i); Texts.Read(r, ch)
- END;
- IF (i = maxLineLen) & (ch # CR) & ~r.eot THEN
- IF b > 0 THEN i := b; org := org + i + 1 ELSE org := org + i END;
- Texts.OpenReader(r, t, org)
- END;
- s[i] := 0X;
- Printer.String(left, y, s, Fonts.Default.name);
- y := y - lsp;
- IF y < bot THEN Printer.Page(copies); INC(pno); PrintHeader; y := top END
- UNTIL r.eot;
- IF y < top THEN Printer.Page(copies) END
- END PrintDraft;
- (*---version without two-column printing
- PROCEDURE PlaceBody* (bodyX, bodyY, bodyW, bodyH: INTEGER;
- T: Texts.Text; VAR pos: LONGINT; pno: INTEGER; place: BOOLEAN);
- VAR t: PrintLine; org: LONGINT; py: INTEGER; inPage: BOOLEAN;
- BEGIN py := bodyY + bodyH; inPage := FALSE;
- LOOP org := pos; Texts.OpenReader(R, T, org); Texts.Read(R, nextCh);
- t.org := org; MeasureLine(T, pno, bodyW, t);
- IF pbeg = org THEN
- IF inPage & (pageBreak IN P.opts) THEN EXIT (*parc enforced early page break*)
- ELSIF py - bodyY < SHORT((3 * P.lsp + P.lead) DIV Unit) THEN (*widow window*)
- INC(pos, t.span); EXIT
- ELSIF inPage OR (pageBreak IN P.opts) THEN DEC(py, SHORT(P.lead DIV Unit)); inPage := TRUE
- END
- ELSE inPage := inPage OR (t.len > 0);
- IF inPage THEN DEC(py, t.h) END;
- IF py < bodyY THEN EXIT END;
- IF place THEN PlaceLine(T, pno, t, bodyX, bodyW + (5 * mm DIV Unit), py)
- ELSE ClaimPrinter
- END
- END;
- INC(pos, t.span);
- IF t.eot THEN EXIT END
- END
- END PlaceBody;
- (*---*)
- PROCEDURE MeasureColumns (pno, py, y0, w0: INTEGER; T: Texts.Text; VAR pos: LONGINT;
- VAR t: ARRAY OF PrintLine; VAR nl, nr, bh: INTEGER; VAR eofPage: BOOLEAN);
- VAR yl, yr, hl, hr, dh: INTEGER; inColumn, break: BOOLEAN;
- PROCEDURE MeasureColumn (VAR inCol, break: BOOLEAN; lastCol: BOOLEAN; VAR py: INTEGER; VAR n: INTEGER);
- VAR org: LONGINT; eot: BOOLEAN;
- BEGIN
- LOOP org := pos; Texts.OpenReader(R, T, org); Texts.Read(R, nextCh);
- t[n].org := org; MeasureLine(T, pno, w0, t[n]); eot := t[n].eot;
- IF ~(twoColumns IN P.opts) OR (n = LEN(t)) THEN EXIT END;
- IF pbeg = org THEN
- IF inCol & (pageBreak IN P.opts) THEN break := TRUE; EXIT (*parc enforced early page break*)
- ELSIF lastCol & (py - y0 < SHORT((3 * P.lsp + P.lead) DIV Unit)) THEN (*widow window*)
- t[n].h := SHORT(P.lead DIV Unit); INC(pos, t[n].span); eofPage := TRUE; EXIT
- ELSIF inCol OR (pageBreak IN P.opts) THEN inCol := TRUE;
- t[n].h := SHORT(P.lead DIV Unit); DEC(py, t[n].h)
- END;
- INC(pos, t[n].span); INC(n)
- ELSIF inCol OR (t[n].len > 0) THEN inCol := TRUE;
- IF py - t[n].h >= y0 THEN DEC(py, t[n].h); INC(pos, t[n].span); INC(n)
- ELSE eofPage := TRUE; EXIT
- END
- ELSE INC(pos, t[n].span)
- END;
- ClaimPrinter;
- IF eot THEN EXIT END
- END
- END MeasureColumn;
- BEGIN inColumn := FALSE; break := FALSE; dh := 0;
- yl := py; nl := 0; MeasureColumn(inColumn, break, FALSE, yl, nl); hl := py - yl;
- yr := py; nr := nl;
- IF ~break THEN MeasureColumn(inColumn, break, TRUE, yr, nr) END;
- hr := py - yr;
- LOOP (*balance columns*)
- IF nl = 0 THEN EXIT
- ELSIF t[nl-1].len = 0 THEN DEC(nl); dh := t[nl].h;
- ELSIF (hl - t[nl - 1].h > hr) & (yr - t[nl - 1].h >= y0) THEN DEC(nl);
- DEC(hl, t[nl].h); INC(yl, t[nl].h); INC(hr, t[nl].h + dh); DEC(yr, t[nl].h + dh); dh := 0
- ELSE EXIT
- END
- END;
- bh := Max(hl, hr)
- END MeasureColumns;
- PROCEDURE PlaceColumns (T: Texts.Text; VAR t: ARRAY OF PrintLine; pno, px, py, w0, nl, nr: INTEGER);
- VAR i, x, y, w: INTEGER;
- BEGIN i := 0;
- x := px; y := py; w := w0 + (5 * mm DIV Unit);
- WHILE i < nl DO DEC(y, t[i].h); PlaceLine(T, pno, t[i], x, w, y); INC(i) END;
- x := px + (w0 + ColumnGap DIV Unit) DIV 2;
- y := py; w := w0 DIV 2 + (5 * mm DIV Unit);
- WHILE (i < nr) & ((t[i].len = 0) OR (t[i].pbeg = t[i].org)) DO INC(i) END;
- WHILE i < nr DO DEC(y, t[i].h); PlaceLine(T, pno, t[i], x, w, y); INC(i) END
- END PlaceColumns;
- PROCEDURE PlaceBody* (bodyX, bodyY, bodyW, bodyH: INTEGER;
- T: Texts.Text; VAR pos: LONGINT; pno: INTEGER; place: BOOLEAN);
- VAR t: PrintLine; org: LONGINT; py, bh, nl, nr: INTEGER; inPage, eofPage: BOOLEAN;
- bt: ARRAY 254 OF PrintLine;
- BEGIN py := bodyY + bodyH; inPage := FALSE;
- Printer.Line (-1, -1, -1, -1); (* mah 7.6.95 dummy to ensure redirection to printer *)
- LOOP org := pos; Texts.OpenReader(R, T, org); Texts.Read(R, nextCh);
- t.org := org; MeasureLine(T, pno, bodyW, t);
- IF pbeg = org THEN
- IF inPage & (pageBreak IN P.opts) THEN EXIT (*parc enforced early page break*)
- ELSIF py - bodyY < SHORT((2 * P.lsp + P.lead) DIV Unit) THEN (*widow window*)
- INC(pos, t.span); EXIT
- ELSIF inPage OR (pageBreak IN P.opts) THEN DEC(py, SHORT(P.lead DIV Unit)); inPage := TRUE
- END;
- INC(pos, t.span)
- ELSIF twoColumns IN P.opts THEN eofPage := FALSE;
- MeasureColumns(pno, py, bodyY, bodyW, T, pos, bt, nl, nr, bh, eofPage);
- IF (nl = 0) OR (bh = 0) THEN EXIT END;
- IF place THEN PlaceColumns(T, bt, pno, bodyX, py, bodyW, nl, nr) END;
- DEC(py, bh); inPage := TRUE;
- IF eofPage THEN EXIT END
- ELSE inPage := inPage OR (t.len > 0);
- IF inPage THEN DEC(py, t.h) END;
- IF py < bodyY THEN
- IF t.h > bodyH THEN INC(pos, t.span) END; (*line is higher than page: skip*)
- EXIT
- END;
- IF place THEN PlaceLine(T, pno, t, bodyX, bodyW + (5 * mm DIV Unit), py)
- ELSE ClaimPrinter
- END;
- INC(pos, t.span)
- END;
- IF t.eot THEN EXIT END
- END
- END PlaceBody;
- (*---*)
- BEGIN fname := "Syntax10.Scn.Fnt"; Sys.Assign ("TextWidth", SYSTEM.ADR (TextWidth))
- END TextPrinter.
-