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C*NUDRIV -- PGPLOT Null device driver
C+
SUBROUTINE NUDRIV (IFUNC, RBUF, NBUF, CHR, LCHR)
INTEGER IFUNC, NBUF, LCHR
REAL RBUF(*)
CHARACTER*(*) CHR
C
C PGPLOT driver for Null device (no graphical output)
C
C Version 1.0 - 1987 May 26 - T. J. Pearson.
C Version 1.1 - 1988 Mar 23 - add rectangle fill.
C Version 1.2 - 1992 Sep 3 - add line-of-pixels.
C Version 1.3 - 1992 Sep 21 - add markers.
C Version 1.4 - 1993 Apr 22 - add optional debugging.
C Version 1.5 - 1994 Aug 31 - use image primitives.
C Version 2.0 - 1996 Jan 22 - allow multiple active devices;
C add QCR primitive.
C
C Supported device: The ``null'' device can be used to suppress
C all graphic output from a program. If environment variable
C PGPLOT_DEBUG is defined, some debugging information is
C reported on standard output.
C
C Device type code: /NULL.
C
C Default device name: None (the device name, if specified, is
C ignored).
C
C Default view surface dimensions: Undefined (The device pretends to
C be a hardcopy device with 1000 pixels/inch and a view surface 8in
C high by 10.5in wide.)
C
C Resolution: Undefined.
C
C Color capability: Color indices 0--255 are accepted.
C
C Input capability: None.
C
C File format: None.
C
C Obtaining hardcopy: Not possible.
C-----------------------------------------------------------------------
C Notes:
C Up to MAXDEV "devices" may be open at once. ACTIVE is the number
C of the currently selected device, or 0 if no devices are open.
C STATE(i) is 0 if device i is not open, 1 if it is open but with
C no current picture, or 2 if it is open with a current picture.
C
C When debugging is enabled, open/close device and begin/end picture
C calls are reported on stdout, and a cumulative count of all
C driver calls is kept.
C-----------------------------------------------------------------------
CHARACTER*(*) DEVICE
PARAMETER (DEVICE='NULL (Null device, no output)')
INTEGER MAXDEV
PARAMETER (MAXDEV=8)
INTEGER NOPCOD
PARAMETER (NOPCOD=29)
CHARACTER*10 MSG
CHARACTER*32 TEXT
CHARACTER*8 LAB(NOPCOD)
INTEGER COUNT(NOPCOD), I, STATE(0:MAXDEV), L, NPIC(MAXDEV)
INTEGER ACTIVE
LOGICAL DEBUG
INTEGER CTABLE(3,0:255), CDEFLT(3,0:15)
SAVE COUNT, STATE, NPIC, DEBUG, CTABLE, CDEFLT, ACTIVE
C
DATA ACTIVE/-1/
DATA COUNT/NOPCOD*0/
DATA DEBUG/.FALSE./
DATA LAB /'qdev ', 'qmaxsize', 'qscale ', 'qcapab ',
1 'qdefnam ', 'qdefsize', 'qmisc ', 'select ',
2 'open ', 'close ', 'beginpic', 'line ',
3 'dot ', 'endpic ', 'set CI ', 'flush ',
4 'cursor ', 'eralpha ', 'set LS ', 'polygon ',
5 'set CR ', 'set LW ', 'escape ', 'rectangl',
6 'set patt', 'pix/imag', 'scaling ', 'marker ',
7 'query CR'/
DATA CDEFLT /000,000,000, 255,255,255, 255,000,000, 000,255,000,
1 000,000,255, 000,255,255, 255,000,255, 255,255,000,
2 255,128,000, 128,255,000, 000,255,128, 000,128,255,
3 128,000,255, 255,000,128, 085,085,085, 170,170,170/
C-----------------------------------------------------------------------
C
IF (ACTIVE.EQ.-1) THEN
CALL GRGENV('DEBUG', TEXT, L)
DEBUG = L.GT.0
ACTIVE = 0
STATE(ACTIVE) = 0
END IF
C
IF (IFUNC.LT.1 .OR. IFUNC.GT.NOPCOD) GOTO 900
COUNT(IFUNC) = COUNT(IFUNC) + 1
GOTO( 10, 20, 30, 40, 50, 60, 70, 80, 90,100,
1 110,120,130,140,150,160,170,180,190,200,
2 210,220,230,240,250,260,270,280,290), IFUNC
900 WRITE (MSG, '(I10)') IFUNC
CALL GRWARN('Unimplemented function in NULL device driver: '//MSG)
NBUF = -1
RETURN
C
C--- IFUNC = 1, Return device name.-------------------------------------
C
10 CHR = DEVICE
LCHR = LEN(DEVICE)
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(2) = 65535
RBUF(3) = 0
RBUF(4) = 65535
RBUF(5) = 0
RBUF(6) = 255
NBUF = 6
RETURN
C
C--- IFUNC = 3, Return device resolution. ------------------------------
C
30 RBUF(1) = 1000.0
RBUF(2) = 1000.0
RBUF(3) = 1
NBUF = 3
RETURN
C
C--- IFUNC = 4, Return misc device info. -------------------------------
C (This device is Hardcopy, No cursor, Dashed lines, Area fill, Thick
C lines, Rectangle fill, Images, , , Markers, query color rep)
C
40 CHR = 'HNDATRQNYM'
LCHR = 10
RETURN
C
C--- IFUNC = 5, Return default file name. ------------------------------
C
50 CHR = 'NL:'
LCHR = 3
RETURN
C
C--- IFUNC = 6, Return default physical size of plot. ------------------
C
60 RBUF(1) = 0
RBUF(2) = 10499
RBUF(3) = 0
RBUF(4) = 7999
NBUF = 4
RETURN
C
C--- IFUNC = 7, Return misc defaults. ----------------------------------
C
70 RBUF(1) = 1
NBUF = 1
RETURN
C
C--- IFUNC = 8, Select plot. -------------------------------------------
C
80 CONTINUE
I = RBUF(2) - 67890
IF (I.LT.1 .OR. I.GT.MAXDEV) THEN
CALL GRWARN('internal error: NULL opcode 8')
ELSE IF (STATE(I).GT.0) THEN
ACTIVE = I
ELSE
CALL GRNU00(IFUNC,0)
END IF
RETURN
C
C--- IFUNC = 9, Open workstation. --------------------------------------
C
90 CONTINUE
C -- Find an inactive device, and select it
DO 91 I=1,MAXDEV
IF (STATE(I).EQ.0) THEN
ACTIVE = I
STATE(ACTIVE) = 1
GOTO 92
END IF
91 CONTINUE
IF (DEBUG) CALL GRWARN ('09 Open workstation')
CALL GRWARN('maximum number of devices of type NULL exceeded')
RBUF(1) = 0
RBUF(2) = 0
NBUF = 2
RETURN
C -- Initialize the new device
92 CONTINUE
RBUF(1) = ACTIVE + 67890
RBUF(2) = 1
NBUF = 2
NPIC(ACTIVE) = 0
C -- Initialize color table
DO 95 I=0,15
CTABLE(1,I) = CDEFLT(1,I)
CTABLE(2,I) = CDEFLT(2,I)
CTABLE(3,I) = CDEFLT(3,I)
95 CONTINUE
DO 96 I=16,255
CTABLE(1,I) = 128
CTABLE(2,I) = 128
CTABLE(3,I) = 128
96 CONTINUE
IF (DEBUG) THEN
CALL GRFAO('09 Open workstation: device #',
: L, TEXT, ACTIVE, 0, 0, 0)
CALL GRWARN(TEXT(1:L))
END IF
RETURN
C
C--- IFUNC=10, Close workstation. --------------------------------------
C
100 CONTINUE
IF (STATE(ACTIVE).NE.1) CALL GRNU00(IFUNC,STATE(ACTIVE))
STATE(ACTIVE) = 0
IF (DEBUG) THEN
CALL GRFAO('10 Close workstation: device #',
: L, TEXT, ACTIVE, 0, 0, 0)
CALL GRWARN(TEXT(1:L))
CALL GRWARN('Device driver calls:')
DO 101 I=1,NOPCOD
IF (COUNT(I).GT.0) THEN
WRITE (TEXT,'(3X,I2,1X,A8,I10)') I, LAB(I), COUNT(I)
CALL GRWARN(TEXT)
END IF
101 CONTINUE
END IF
RETURN
C
C--- IFUNC=11, Begin picture. ------------------------------------------
C
110 CONTINUE
IF (STATE(ACTIVE).NE.1) CALL GRNU00(IFUNC,STATE(ACTIVE))
STATE(ACTIVE) = 2
NPIC(ACTIVE) = NPIC(ACTIVE)+1
IF (DEBUG) THEN
CALL GRFAO('11 Begin picture # on device #',
: L, TEXT, NPIC(ACTIVE), ACTIVE, 0,0)
CALL GRWARN(TEXT(:L))
END IF
RETURN
C
C--- IFUNC=12, Draw line. ----------------------------------------------
C
120 CONTINUE
IF (STATE(ACTIVE).NE.2) CALL GRNU00(IFUNC,STATE(ACTIVE))
RETURN
C
C--- IFUNC=13, Draw dot. -----------------------------------------------
C
130 CONTINUE
IF (STATE(ACTIVE).NE.2) CALL GRNU00(IFUNC,STATE(ACTIVE))
RETURN
C
C--- IFUNC=14, End picture. --------------------------------------------
C
140 CONTINUE
IF (STATE(ACTIVE).NE.2) CALL GRNU00(IFUNC,STATE(ACTIVE))
STATE(ACTIVE) = 1
IF (DEBUG) THEN
CALL GRFAO('14 End picture # on device #',
: L, TEXT, NPIC(ACTIVE), ACTIVE, 0,0)
CALL GRWARN(TEXT(:L))
END IF
RETURN
C
C--- IFUNC=15, Select color index. -------------------------------------
C
150 CONTINUE
IF (STATE(ACTIVE).NE.2) CALL GRNU00(IFUNC,STATE(ACTIVE))
RETURN
C
C--- IFUNC=16, Flush buffer. -------------------------------------------
C
160 CONTINUE
IF (STATE(ACTIVE).LT.1) CALL GRNU00(IFUNC,STATE(ACTIVE))
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
180 CONTINUE
IF (STATE(ACTIVE).LT.1) CALL GRNU00(IFUNC,STATE(ACTIVE))
RETURN
C
C--- IFUNC=19, Set line style. -----------------------------------------
C
190 CONTINUE
IF (STATE(ACTIVE).NE.2) CALL GRNU00(IFUNC,STATE(ACTIVE))
RETURN
C
C--- IFUNC=20, Polygon fill. -------------------------------------------
C
200 CONTINUE
IF (STATE(ACTIVE).NE.2) CALL GRNU00(IFUNC,STATE(ACTIVE))
RETURN
C
C--- IFUNC=21, Set color representation. -------------------------------
C
210 CONTINUE
IF (STATE(ACTIVE).LT.1) CALL GRNU00(IFUNC,STATE(ACTIVE))
I = RBUF(1)
CTABLE(1, I) = NINT(RBUF(2)*255)
CTABLE(2, I) = NINT(RBUF(3)*255)
CTABLE(3, I) = NINT(RBUF(4)*255)
RETURN
C
C--- IFUNC=22, Set line width. -----------------------------------------
C
220 CONTINUE
IF (STATE(ACTIVE).NE.2) CALL GRNU00(IFUNC,STATE(ACTIVE))
RETURN
C
C--- IFUNC=23, Escape. -------------------------------------------------
C
230 CONTINUE
RETURN
C
C--- IFUNC=24, Rectangle fill. -----------------------------------------
C
240 CONTINUE
IF (DEBUG.AND.STATE(ACTIVE).NE.2) CALL GRNU00(IFUNC,STATE(ACTIVE))
RETURN
C
C--- IFUNC=25, Not implemented -----------------------------------------
C
250 CONTINUE
RETURN
C
C--- IFUNC=26, Line of pixels ------------------------------------------
C
260 CONTINUE
IF (STATE(ACTIVE).NE.2) CALL GRNU00(IFUNC,STATE(ACTIVE))
RETURN
C
C--- IFUNC=27, Scaling info -- -----------------------------------------
C
270 CONTINUE
IF (STATE(ACTIVE).NE.2) CALL GRNU00(IFUNC,STATE(ACTIVE))
RETURN
C
C--- IFUNC=28, Draw marker ---------------------------------------------
C
280 CONTINUE
IF (STATE(ACTIVE).NE.2) CALL GRNU00(IFUNC,STATE(ACTIVE))
C WRITE (*,'(1X,A,I4,1X,3F10.1)') 'MARKER', NINT(RBUF(1)), RBUF(2),
C 1 RBUF(3), RBUF(4)
RETURN
C
C--- IFUNC=29, Query color representation. -----------------------------
C
290 CONTINUE
IF (STATE(ACTIVE).LT.1) CALL GRNU00(IFUNC,STATE(ACTIVE))
I = RBUF(1)
RBUF(2) = CTABLE(1,I)/255.0
RBUF(3) = CTABLE(2,I)/255.0
RBUF(4) = CTABLE(3,I)/255.0
NBUF = 4
RETURN
C-----------------------------------------------------------------------
END
SUBROUTINE GRNU00(IFUNC, STATE)
INTEGER IFUNC, STATE
C
C PGPLOT NULL device driver: report error
C-----------------------------------------------------------------------
INTEGER L
CHARACTER*80 MSG
C
CALL GRFAO('++ internal error: driver in state # for opcode #',
: L, MSG, STATE, IFUNC, 0, 0)
CALL GRWARN(MSG(1:L))
RETURN
END
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