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SUBROUTINE GLDRIV (IFUNC, RBUF, NBUF, CHR, LCHR, MODE)
INTEGER IFUNC, NBUF, LCHR, MODE
REAL RBUF(*)
CHARACTER*(*) CHR
C-----------------------------------------------------------------------
C PGPLOT driver for Hewlett Packard HPGL plotter(s).
C-----------------------------------------------------------------------
C Version 1.0 - 1988 Mar 14 - B. H. Toby
C 9/88 bull: added page eject to IFUNC 14
C Version 2.0 - 1994 Mar 16 - T. J. Pearson (dual mode, standard F77)
C Version 2.1 - 1994 Nov 6 - TJP: use PGPLOT_GL_TERMINAL.
C Version 3.0 - 1997 Jun 11 - TJP: add SC to specify page size.
C-----------------------------------------------------------------------
C This routine has been written specifically for the HP7475A
C Plotter, but should support most HPGL devices, perhaps with
C minor modifications.
C
C If environment variable PGPLOT_GL_TERMINAL has value YES (or any
C string beginning with Y or y), it is assumed that the
C output device is a plotter connected BEFORE the terminal using
C the Y-cable (HP part #17455A), in which case the plotter is
C ``turned on'' using a "<ESC>.(" and xon/xoff handshaking is
C enabled using "<ESC>.I81;;17:" and "<ESC>.N;19:".
C Otherwise, it is the user's responsibility to
C add control codes, if needed.
C
C If there is more than one plot and the plot is on a terminal,
C a prompt will be generated, allowing the page to be advanced.
C
C ref. HP 7475A Interfacing and Programming Manual P/N 7475-90001
C-----------------------------------------------------------------------
CHARACTER*(*) LTYPE, PTYPE, DEFNAM
PARAMETER (LTYPE=
: 'HPGL (Hewlett Packard HPGL plotter, landscape orientation)')
PARAMETER (PTYPE=
: 'VHPGL (Hewlett Packard HPGL plotter, portrait orientation)')
PARAMETER (DEFNAM='pgplot.hpgl')
CHARACTER*80 MSG
CHARACTER*80 INSTR
INTEGER LASTI, LASTJ, UNIT, IC, IER
INTEGER I0, J0, I1, J1, L
INTEGER I, PLOTNO
LOGICAL ITERM
INTEGER GRGCOM, GROPTX
SAVE
C-----------------------------------------------------------------------
C
GOTO( 10, 20, 30, 40, 50, 60, 70, 80, 90,100,
1 110,120,130,140,150,160,170,180,190,200,
2 210,220,230), IFUNC
GOTO 900
C
C--- IFUNC = 1, Return device name.-------------------------------------
C
10 IF (MODE.EQ.1) THEN
C -- landscape (mode=1)
CHR = LTYPE
LCHR = LEN(LTYPE)
ELSE
C -- portrait (mode=2)
CHR = PTYPE
LCHR = LEN(PTYPE)
END IF
RETURN
C
C--- IFUNC = 2, Return physical min and max for plot device, and range
C of color indices.---------------------------------------
C
20 RBUF(1) = 0
RBUF(3) = 0
RBUF(5) = 1
RBUF(6) = 6
NBUF = 6
IF (MODE.EQ.1) THEN
C -- landscape (mode=1)
RBUF(2) = 16640
RBUF(4) = 11040
ELSE
C -- portrait (mode=2)
RBUF(2) = 11040
RBUF(4) = 16640
END IF
RETURN
C
C--- IFUNC = 3, Return device resolution. ------------------------------
C
30 RBUF(1) = 1016.0
RBUF(2) = 1016.0
RBUF(3) = 20
NBUF = 3
RETURN
C
C--- IFUNC = 4, Return misc device info. -------------------------------
C (This device is Hardcopy, No cursor, No dashed lines, No area fill,
C No thick lines)
C
40 CHR = 'HNNNNNNNNN'
LCHR = 10
RETURN
C
C--- IFUNC = 5, Return default file name. ------------------------------
C
50 CHR = DEFNAM
LCHR = LEN(DEFNAM)
RETURN
C
C--- IFUNC = 6, Return default physical size of plot. ------------------
C
60 RBUF(1) = 0
RBUF(3) = 0
NBUF = 4
IF (MODE.EQ.1) THEN
C -- landscape (mode=1)
RBUF(2) = 10365
RBUF(4) = 7962
ELSE
C -- portrait (mode=2)
RBUF(2) = 7962
RBUF(4) = 10365
END IF
RETURN
C
C--- IFUNC = 7, Return misc defaults. ----------------------------------
C
70 RBUF(1) = 10
NBUF = 1
RETURN
C
C--- IFUNC = 8, Select plot. -------------------------------------------
C
80 CONTINUE
RETURN
C
C--- IFUNC = 9, Open workstation. --------------------------------------
C
90 CONTINUE
C Try to open the graphics device
CALL GRGLUN(UNIT)
IER = GROPTX(UNIT, CHR(1:LCHR), DEFNAM, 1)
IF (IER.NE.0) THEN
MSG='Cannot open graphics device '//CHR(1:LCHR)
CALL GRWARN(MSG)
RBUF(2) = 0
RETURN
END IF
C is the output device a terminal?
CALL GRGENV('GL_TERMINAL', INSTR, L)
ITERM = (INSTR(1:1).EQ.'Y' .OR. INSTR(1:1).EQ.'y')
RBUF(1) = UNIT
RBUF(2) = 1
NBUF = 2
LASTI = -1
LASTJ = -1
IF (ITERM) THEN
C this turns on the plotter
WRITE (UNIT, '(A)') CHAR(27)//'.('
C this sets up Xon/Xoff protocol
WRITE (UNIT, '(A)') CHAR(27)//'.I81;;17:'
WRITE (UNIT, '(A)') CHAR(27)//'.N;19:'
ENDIF
IF (MODE.EQ.1) THEN
C -- landscape (mode=1)
WRITE (UNIT, '(A)') 'IN;'
ELSE
C -- portrait (mode=2)
WRITE (UNIT, '(A)') 'IN;RO90;IP;IW;'
END IF
PLOTNO = 1
RETURN
C
C--- IFUNC=10, Close workstation. --------------------------------------
C
100 CONTINUE
WRITE (UNIT, '(A)') 'SP;'
IF (ITERM) THEN
C this turns off the plotter
WRITE (UNIT, '(A)') CHAR(27)//'.)'
CLOSE (UNIT)
ENDIF
CALL GRFLUN(UNIT)
RETURN
C
C--- IFUNC=11, Begin picture. ------------------------------------------
C
110 CONTINUE
C if the plot is interactive, and we are starting a second or third (...)
C picture, allow a chance to change the paper.
IF (ITERM .AND. PLOTNO .GT. 1) THEN
C turn off the plotter
WRITE (UNIT, '(A)') CHAR(27)//'.)'
C send a prompt
IER = GRGCOM(MSG, CHAR(7)//
1 'Reload paper, then press <RETURN>: ', I)
C turn on the plotter
WRITE (UNIT, '(A)') CHAR(27)//'.('
ENDIF
CALL GRFAO('SC0,#,0,#;SP1;', L, INSTR,
: NINT(RBUF(1)), NINT(RBUF(2)), 0, 0)
WRITE (UNIT, '(A)') INSTR(:L)
PLOTNO = PLOTNO + 1
WRITE (UNIT, '(A)') 'PA;'
RETURN
C
C--- IFUNC=12, Draw line. ----------------------------------------------
C
120 CONTINUE
I0 = NINT(RBUF(1))
J0 = NINT(RBUF(2))
I1 = NINT(RBUF(3))
J1 = NINT(RBUF(4))
IF ( (I0.NE.LASTI) .OR. (J0.NE.LASTJ) ) THEN
C -- move with pen up
C -- Encode the coordinates into the command string
CALL GRFAO('PU#,#;', L, INSTR, I0, J0, 0, 0)
C -- Write the command string to the plot file
WRITE (UNIT, '(A)') INSTR(:L)
ENDIF
C -- move with pen down
C -- Encode the coordinates into the command string
CALL GRFAO('PD#,#;', L, INSTR, I1, J1, 0, 0)
C -- Write the command string to the plot file
WRITE (UNIT, '(A)') INSTR(:L)
LASTI = I1
LASTJ = J1
RETURN
C
C--- IFUNC=13, Draw dot. -----------------------------------------------
C
130 CONTINUE
I0 = NINT(RBUF(1))
J0 = NINT(RBUF(2))
IF ((I0.NE.LASTI) .OR. (J0.NE.LASTJ)) THEN
C -- move with pen up
C -- Encode the coordinates into the command string
CALL GRFAO('PU#,#;PD;', L, INSTR, I0, J0, 0, 0)
C -- Write the command string to the plot file
WRITE (UNIT, '(A)') INSTR(:L)
ELSE
C -- no need to move, just lower the pen
WRITE (UNIT, '(A)') 'PD;'
ENDIF
LASTI = I0
LASTJ = J0
RETURN
C
C--- IFUNC=14, End picture. --------------------------------------------
C
140 CONTINUE
C move the pen off the page
WRITE (UNIT, '(A)') 'PU32000,32000;PG;'
RETURN
C
C--- IFUNC=15, Select color index. -------------------------------------
C
150 CONTINUE
IC = NINT(RBUF(1))
IF (IC.LT.1) IC = 1
IF (IC.GT.6) IC = 6
WRITE (UNIT,'(A,I2,A)') 'SP',IC,';'
RETURN
C
C--- IFUNC=16, Flush buffer. -------------------------------------------
C (Null operation: buffering is not implemented.)
C
160 CONTINUE
RETURN
C
C--- IFUNC=17, Read cursor. --------------------------------------------
C (Not implemented: should not be called.)
C
170 GOTO 900
C
C--- IFUNC=18, Erase alpha screen. -------------------------------------
C (Null operation: there is no alpha screen.)
C
180 CONTINUE
RETURN
C
C--- IFUNC=19, Set line style. -----------------------------------------
C (Not implemented: should not be called.)
C
190 GOTO 900
C
C--- IFUNC=20, Polygon fill. -------------------------------------------
C (Not implemented: should not be called.)
C
200 GOTO 900
C
C--- IFUNC=21, Set color representation. -------------------------------
C IGnored.
C
210 CONTINUE
RETURN
C
C--- IFUNC=22, Set line width. -----------------------------------------
C (Not implemented: should not be called.)
C
220 GOTO 900
C
C--- IFUNC=23, Escape. -------------------------------------------------
C
230 CONTINUE
WRITE (UNIT, '(A)') CHR(:LCHR)
LASTI = -1
RETURN
C-----------------------------------------------------------------------
C Error: unimplemented function.
C
900 WRITE (MSG,'(I10)') IFUNC
CALL GRWARN('Unimplemented function in HPGL device driver: '//MSG)
NBUF = -1
RETURN
C-----------------------------------------------------------------------
END
|
