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Printing.cp
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Printing.cp
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MODULE Printing;
(**
project = "BlackBox"
organization = "www.oberon.ch"
contributors = "Oberon microsystems"
version = "System/Rsrc/About"
copyright = "System/Rsrc/About"
license = "Docu/BB-License"
changes = ""
issues = ""
**)
IMPORT Kernel, Fonts, Ports, Dates, Printers, Views, Dialog, Strings;
CONST maxNrOfSegments = 16;
TYPE
PageInfo* = RECORD
first*, from*, to*: INTEGER; (** current IN **)
(** first, from, to: OUT, preset to (0, 0, 9999) **)
alternate*: BOOLEAN;
title*: Views.Title
END;
Banner* = RECORD
font*: Fonts.Font;
gap*: INTEGER; (** OUT, prest to (0,0) **)
left*, right*: ARRAY 128 OF CHAR (** OUT, preset to "", "" **)
(** anywhere in header or footer:
&p - replaced by current page number as arabic numeral
&r - replaced by current page number as roman numeral
&R - replaced by current page number as capital roman numeral
&a - replaced by current page number as alphanumeric character
&A - replaced by current page number as capital alphanumeric character
&d - replaced by printing date
&t - replaced by printing time
&&- replaced by & character
&; - specifies split point
&f - filename without path/title
**)
END;
Par* = POINTER TO LIMITED RECORD
page*: PageInfo;
header*, footer*: Banner;
copies-: INTEGER
END;
Line = RECORD
buf: ARRAY 256 OF CHAR;
beg: ARRAY maxNrOfSegments OF BYTE;
len: INTEGER
END;
Hook* = POINTER TO ABSTRACT RECORD (Kernel.Hook) END;
VAR
par*: Par;
month: ARRAY 12 * 3 + 1 OF CHAR;
printingHook: Hook;
PROCEDURE (h: Hook) Print* (v: Views.View; par: Par), NEW, ABSTRACT;
PROCEDURE (h: Hook) Current* (): INTEGER, NEW, ABSTRACT;
PROCEDURE SetHook* (p: Hook);
BEGIN
printingHook := p
END SetHook;
PROCEDURE NewPar* (IN page: PageInfo; IN header, footer: Banner; copies: INTEGER): Par;
VAR par: Par;
BEGIN
NEW(par);
par.page := page;
par.header := header;
par.footer := footer;
par.copies := copies;
IF par.header.font = NIL THEN par.header.font := Fonts.dir.Default() END;
IF par.footer.font = NIL THEN par.footer.font := Fonts.dir.Default() END;
RETURN par
END NewPar;
PROCEDURE NewDefaultPar* (title: Views.Title): Par;
VAR par: Par;
BEGIN
NEW(par);
par.page.first := 1;
par.page.from := 0;
par.page.to := 9999;
par.page.alternate := FALSE;
par.copies := 1;
par.header.gap := 0; par.header.left := ""; par.header.right := ""; par.header.font := Fonts.dir.Default();
par.footer.gap := 0; par.footer.left := ""; par.footer.right := ""; par.header.font := Fonts.dir.Default();
par.page.title := title;
RETURN par
END NewDefaultPar;
PROCEDURE PrintView* (view: Views.View; p: Par);
BEGIN
ASSERT(view # NIL, 20); ASSERT(p # NIL, 21);
ASSERT(par = NIL, 22); (* no recursive printing *)
IF Printers.dir.Available() THEN
ASSERT(p.page.first >= 0, 23);
ASSERT(p.page.from >= 0, 24);
ASSERT(p.page.to >= p.page.from, 25);
ASSERT(printingHook # NIL, 100);
printingHook.Print(view, p)
ELSE Dialog.ShowMsg("#System:NoPrinterFound")
END
END PrintView;
PROCEDURE GetDateAndTime (IN date: Dates.Date; IN time: Dates.Time;
VAR d, t: ARRAY OF CHAR);
VAR i, j, k: INTEGER; s: ARRAY 8 OF CHAR;
BEGIN
Strings.IntToStringForm (date.day, Strings.decimal, 0, "0", FALSE, d);
j := date.month * 3; i := j - 3; k := 0;
WHILE i < j DO s[k] := month[i]; INC(k); INC(i) END; s[k] := 0X;
d := d + "-" + s;
Strings.IntToStringForm (date.year, Strings.decimal, 0, "0", FALSE, s);
d := d + "-" + s;
Strings.IntToStringForm (time.hour, Strings.decimal, 0, "0", FALSE, t);
Strings.IntToStringForm (time.minute, Strings.decimal, 2, "0", FALSE, s);
t := t + ":" + s;
END GetDateAndTime;
PROCEDURE Expand (s: ARRAY OF CHAR; IN date: Dates.Date; IN time: Dates.Time;
IN title: Views.Title; pno: INTEGER; printing: BOOLEAN; VAR line: Line);
VAR i, l: INTEGER; ch: CHAR; j: BYTE;
p, d, t, r, rl: ARRAY 32 OF CHAR;
BEGIN
IF printing THEN
Strings.IntToStringForm (pno, Strings.decimal, 0, "0", FALSE, p);
IF (0 < pno) & (pno < 4000) THEN
Strings.IntToStringForm(pno, Strings.roman, 0, " ", FALSE, r)
ELSE
r := p
END;
ELSE p := "#"; r := "#"
END;
GetDateAndTime(date, time, d, t);
i := 0; ch := s[i]; line.len := 0; j := 0;
WHILE ch # 0X DO
IF ch = "&" THEN
INC(i); ch := s[i];
IF ch = "p" THEN
l := 0; WHILE p[l] # 0X DO line.buf[j] := p[l]; INC(j); INC(l) END
ELSIF ch = "r" THEN
Strings.ToLower(r, rl);
l := 0; WHILE rl[l] # 0X DO line.buf[j] := rl[l]; INC(j); INC(l) END
ELSIF ch = "R" THEN
l := 0; WHILE r[l] # 0X DO line.buf[j] := r[l]; INC(j); INC(l) END
ELSIF (ch = "a") OR (ch = "A") THEN
IF printing & (0 < pno) & (pno <= 26) THEN line.buf[j] := CHR(pno + ORD(ch) - 1); INC(j)
ELSE l := 0; WHILE p[l] # 0X DO line.buf[j] := p[l]; INC(j); INC(l) END
END
ELSIF ch = "d" THEN
l := 0; WHILE d[l] # 0X DO line.buf[j] := d[l]; INC(j); INC(l) END
ELSIF ch = "t" THEN
l := 0; WHILE t[l] # 0X DO line.buf[j] := t[l]; INC(j); INC(l) END
ELSIF ch = "f" THEN
l := 0; WHILE title[l] # 0X DO line.buf[j] := title[l]; INC(j); INC(l) END
ELSIF ch = ";" THEN
IF (line.len < maxNrOfSegments-1) THEN line.beg[line.len] := j; INC(line.len)
ELSE line.buf[j] := " "; INC(j)
END
ELSIF ch = "&" THEN
line.buf[j] := "&"; INC(j)
END;
IF ch # 0X THEN INC(i); ch := s[i] END
ELSE line.buf[j] := ch; INC(j); INC(i); ch := s[i]
END
END;
line.buf[j] := 0X; line.beg[line.len] := j; INC(line.len)
END Expand;
PROCEDURE PrintLine (f: Views.Frame; font: Fonts.Font;
x0, x1, y: INTEGER; VAR line: Line);
VAR sp, dx, x: INTEGER; i, j, k: INTEGER; buf: ARRAY 128 OF CHAR;
BEGIN
sp := (x1 - x0 - font.StringWidth(line.buf));
IF line.len = 1 THEN (* center *)
f.DrawString(x0 + sp DIV 2, y, Ports.defaultColor, line.buf, font)
ELSE
IF sp > 0 THEN dx := sp DIV (line.len - 1) ELSE dx := 0 END;
k := 0; j := 0; x := x0;
WHILE k < line.len DO
i := 0;
WHILE j < line.beg[k] DO
buf[i] := line.buf[j]; INC(i); INC(j)
END;
buf[i] := 0X;
f.DrawString(x, y, Ports.defaultColor, buf, font);
x := x + font.StringWidth(buf) + dx;
INC(k)
END
END
END PrintLine;
PROCEDURE PrintBanner* (f: Views.Frame; IN p: PageInfo; IN b: Banner;
IN date: Dates.Date; IN time: Dates.Time; x0, x1, y: INTEGER);
VAR line: Line; printing: BOOLEAN;
BEGIN
printing := par # NIL;
IF printing THEN
ASSERT(printingHook # NIL, 100);
IF p.alternate & ~ODD(p.first + printingHook.Current()) THEN
Expand(b.left, date, time, p.title, p.first + printingHook.Current(), printing, line)
ELSE
Expand(b.right, date, time, p.title, p.first + printingHook.Current(), printing, line)
END
ELSE
Expand(b.right, date, time, p.title, 0, printing, line)
END;
PrintLine(f, b.font, x0, x1, y, line)
END PrintBanner;
PROCEDURE Current*(): INTEGER;
BEGIN
ASSERT(par # NIL, 21);
ASSERT(printingHook # NIL, 100);
RETURN printingHook.Current()
END Current;
BEGIN
month := "JanFebMarAprMayJunJulAugSepOctNovDec"
END Printing.