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|
C*ACDRIV -- PGPLOT device driver for Acorn Archimedes machines
C+
SUBROUTINE ACDRIV (IFUNC, RBUF, NBUF, CHR, LCHR, MTYPE)
INTEGER IFUNC, NBUF, LCHR, MTYPE
REAL RBUF(*)
CHARACTER*(*) CHR, DEFNAM
C
C PGPLOT driver for Acorn Archimedes
C This driver will cause the system to leave the Desktop, but leave the
C screen mode provided it has the normal 16 colours
C
C This routine must be compiled with Acorn Fortran release 2
C and linked with the Fortran Friends graphics, utils and spriteop libraries.
C
C 26 January 1996 : Version 1.10
C 16 May 1996 : Version 1.11 allows concurrent /ARCF and ARCV
C
C Resolution: Depends on graphics mode. Ensure that the current mode is
C suitable before running the PGPLOT program.
C
C version 1.10 also allows the making of the pictures into sprite files
C the default sprite size is the screen size but you may alter the
C number of pixels in x and y with the variables:
C PGPLOT_ARC_WIDTH and PGPLOT_ARC_HEIGHT
C the file names will be sprite/01, sprite/02 etc.
PARAMETER (DEFNAM = 'sprite/01')
C
C 26 April 1996 : Version 1.11 (changes to /ARCV)
C - small corrections to the initial screen clearing
C - allows standard PGPLOT rubber-banded cursors
C---
C common for communicating with rubber banding GRARC3
COMMON /GRARCC/ MAXX(2), MAXY(2), I4X0, I4Y0, I4X1, I4Y1, I4MODE
INTEGER MAXX, MAXY, I4X0, I4Y0, I4X1, I4Y1, I4MODE
C
INTEGER NXPIX(2), NYPIX(2), MULTX(2), MULTY(2), IXSTEP(2)
SAVE NXPIX, NYPIX, MULTX, MULTY, IXSTEP
INTEGER NCOLR, NEEDSP, KOLNOW(2), KOLOUR(0:255)
SAVE NCOLR, NEEDSP, KOLNOW, KOLOUR
LOGICAL INIT, APPEND, FIRSTO, INPICT(2), STATE(2)
SAVE INIT, APPEND, FIRSTO, INPICT, STATE
INTEGER IERR, I4X2, I4Y2, MBUF(2), IREGS(0:9), ISCRR(4)
LOGICAL SWIERR, SWIF77, SPOP08, SPOP15, LOGDUM
CHARACTER ANS*4, INSTR*10, SPNAME*9
DATA INIT/.TRUE./, STATE/2*.FALSE./
DATA KOLOUR/?I00000000, ?IFFFFFF00, ?I0000FF00, ?I00FF0000,
1 ?IFF000000, ?IFFFF0000, ?IFF00FF00, ?I00FFFF00,
2 ?I0080FF00, ?I00FF8000, ?I80FF0000, ?IFF800000,
3 ?IFF008000, ?I8000FF00, ?I50505000, ?IA0A0A000,
4 240*0/
IF(INIT .AND. IFUNC.GT.1) THEN
C check for 16-colour mode
NCOLR = MODEVAR(-1, 3)
IF(NCOLR.EQ.63) NCOLR = 255
IF(NCOLR.EQ.-1) NCOLR = ?IFFFFFF
IF(NCOLR.LT.15) THEN
CALL GRWARN('Archimedes driver needs at least 16 colours')
NBUF = -1
RETURN
ENDIF
INIT = .FALSE.
C get screen characteristics
DO 8 MTP = 1, 2
NXPIX(MTP) = MODEVAR(-1, 11) + 1
NYPIX(MTP) = MODEVAR(-1, 12) + 1
IF(MTP.EQ.1) THEN
MULTX(1) = MODEVAR(-1, 4)
MULTY(1) = MODEVAR(-1, 5)
ELSE
SPNAME = DEFNAM
CALL GRGENV('ARC_WIDTH', INSTR, L)
IF(L.GT.0) READ(INSTR, 4)NXPIX(2)
4 FORMAT(BN, I10)
CALL GRGENV('ARC_HEIGHT', INSTR, L)
IF(L.GT.0) READ(INSTR, 4)NYPIX(2)
MULTX(2) = 1
MULTY(2) = 1
ENDIF
IXSTEP(MTP) = ISHFT(1, MULTX(MTP))
MAXX(MTP) = ISHFT(NXPIX(MTP), MULTX(MTP))
MAXY(MTP) = ISHFT(NYPIX(MTP), MULTY(MTP))
INPICT(MTP) = .FALSE.
8 CONTINUE
ENDIF
IF(IFUNC.GT.9 .AND. .NOT.STATE(MTYPE)) THEN
CALL GRWARN('Device is not open')
NBUF = -1
RETURN
ENDIF
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
C unknown driver function, so just return
NBUF = -1
RETURN
C
C--- IFUNC = 1, Return device name.-------------------------------------
C
10 IF(MTYPE.EQ.1) THEN
CHR = 'ARCV (screen viewer for Acorn Archimedes machines)'
LCHR = LNBLNK(CHR)
ELSEIF(MTYPE.EQ.2) THEN
CHR = 'ARCF (sprite file for Acorn Archimedes machines)'
LCHR = LNBLNK(CHR)
ELSE
CALL GRWARN('Requested MODE not implemented in Archi driver')
LCHR = 0
NBUF = -1
ENDIF
RETURN
C
C--- IFUNC = 2, Return physical min and max for plot device, and range
C of color indices.---------------------------------------
C
20 CONTINUE
RBUF(1) = 0
RBUF(2) = MAXX(MTYPE)
RBUF(3) = 0
RBUF(4) = MAXY(MTYPE)
RBUF(5) = 0
RBUF(6) = MIN(255, NCOLR)
NBUF = 6
RETURN
C
C--- IFUNC = 3, Return device resolution. ------------------------------
C Divide the number of pixels on screen by a typical screen size in
C inches.
C
30 continue
RBUF(1) = MAXX(MTYPE)/10.0
RBUF(2) = RBUF(1)
RBUF(3) = FLOAT(ISHFT(1, MULTX(MTYPE)))
NBUF = 3
RETURN
C
C--- IFUNC = 4, Return misc device info. -------------------------------
C (This device is Interactive, cursor, No dashed lines, No area fill,
C No thick lines, rectangle fill)
C
40 IF(MTYPE.EQ.1) THEN
CHR = 'ICNNNRPVYN'
ELSE
CHR = 'HNNNNRPNYN'
ENDIF
LCHR = 10
NBUF = 0
RETURN
C
C--- IFUNC = 5, Return default file name. ------------------------------
C
50 IF(MTYPE.EQ.1) THEN
CHR = ' '
LCHR = 1
ELSE
CHR = SPNAME
LCHR = 9
ENDIF
RETURN
C
C--- IFUNC = 6, Return default physical size of plot. ------------------
C
60 CONTINUE
RBUF(1) = 0
RBUF(2) = MAXX(MTYPE)
RBUF(3) = 0
RBUF(4) = MAXY(MTYPE)
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
RETURN
C
C--- IFUNC = 9, Open workstation. --------------------------------------
C
90 CONTINUE
C -- check for concurrent access
IF (STATE(MTYPE)) THEN
CALL GRWARN('Device is already open')
RBUF(2) = 0
ELSE
IF(MTYPE.EQ.1) THEN
C flag to erase screen on next picture
FIRSTO = .TRUE.
C set append flag to suppress screen clearing on subsequent pictures
APPEND = RBUF(3).NE.0.
ENDIF
C flag the workstation active
STATE(MTYPE) = .TRUE.
C but not generating picture yet
INPICT(MTYPE) = .FALSE.
C
RBUF(2) = 1
END IF
RBUF(1) = 0
NBUF = 2
RETURN
C
C--- IFUNC = 10, Close workstation. ------------------------------------
C
100 CONTINUE
C flag the workstation inactive
STATE(MTYPE) = .FALSE.
IF(MTYPE.EQ.1) THEN
C reset the 16 colour palette
IF(NCOLR.EQ.15) CALL VDU(20)
C clear the screen
CALL CLS
ENDIF
RETURN
C
C--- IFUNC = 11, Begin picture. ----------------------------------------
C
110 CONTINUE
IF(MTYPE.EQ.1 .AND. (.NOT.APPEND .OR. FIRSTO)) THEN
CALL GRARC2(0, 0, -NCOLR, KOLOUR)
C remove viewports and clear screen to background colour
CALL VDU(26)
CALL CLG
C home the text cursor
CALL VDU(30)
C set foreground text colour
IF(NCOLR.EQ.15) CALL COLOUR(1)
C remove pointer
CALL OSCLI('Pointer 0')
ENDIF
FIRSTO = .FALSE.
IERR=0
IF(MTYPE.EQ.2) THEN
C create sprite
LBPPIX = MODEVAR(-1, 9)
NBYTES = ISHFT(NXPIX(2)*NYPIX(2), LBPPIX)/8 + 64
C first ensure there is space in system sprite area
IF(.NOT.SPOP08(0, ISPSIZ, NSPRIT, ISPR1, IFREE)) THEN
C case 1, no system sprite area yet
NEEDSP = NBYTES + 16 + 44
ELSE
C case 2, system sprite area exists
C remove any of our sprites which may have been left by accident
112 DO 114 ISPRIT = 1, NSPRIT
CALL SPOP13(0, ISPRIT, INSTR,LENG)
IF(INSTR(1:7).EQ.'sprite/'.AND.LENG.EQ.9) THEN
CALL SPOP25(0, INSTR(1:9))
NSPRIT = NSPRIT -1
GO TO 112
ENDIF
114 CONTINUE
LOGDUM = SPOP08(0, ISPSIZ, NSPRIT, ISPR1, IFREE)
NEEDSP = NBYTES + 44 - ISPSIZ + IFREE
ENDIF
IERR = 0
IF(NEEDSP.GT.0) THEN
IREGS(0) = 3
IREGS(1) = NEEDSP
IF(SWIF77(?I2A, IREGS, IFLAG)) IERR = 100
IF(IERR.EQ.0) THEN
IF(IREGS(1).GE.NEEDSP) THEN
C successfully assigned memory
NEEDSP = IREGS(1)
ELSE
IERR = 101
ENDIF
ENDIF
ENDIF
C create sprite
IF(IERR.EQ.0) THEN
IF(NCOLR.EQ.15) THEN
C create it with palette in 16 colour mode
SWIERR = SPOP15(0, SPNAME, 1, NXPIX(2), NYPIX(2), 27)
ELSEIF(NCOLR.EQ.255) THEN
SWIERR = SPOP15(0, SPNAME, 0, NXPIX(2), NYPIX(2), 28)
ELSE
C create sprite 'mode word' (PRM 5-87)
MODEW = IOR(?I1680B5, ISHFT(LBPPIX + 1, 27))
SWIERR = SPOP15(0, SPNAME, 0, NXPIX(2), NYPIX(2), MODEW)
ENDIF
IF(SWIERR) IERR = 103
IF(IERR.EQ.0) CALL GRWARN('creating sprite '//SPNAME)
ENDIF
IF(IERR.NE.0) THEN
CALL GRGMSG(IERR)
CALL GRWARN('Failed to allocate plot buffer.')
C failed to get enough memory so return it
IF(IERR.GT.100) THEN
IREGS(1) = -IREGS(1)
IF(SWIF77(?I2A, IREGS, IFLAG)) THEN
IERR = 101
ELSE
IERR = 102
ENDIF
ENDIF
ENDIF
ENDIF
C set up colours
IF(IERR.EQ.0) THEN
IF(NCOLR.EQ.15) THEN
DO 118 I = 0, 15
IF(MTYPE.EQ.2) THEN
CALL GRARC1(SPNAME, I, KOLOUR(I))
ELSE
CALL VDU19(I, 16,
1 IAND(ISHFT(KOLOUR(I), -8), 255),
2 IAND(ISHFT(KOLOUR(I), -16), 255),
3 ISHFT(KOLOUR(I), -24))
ENDIF
118 CONTINUE
ELSEIF(MTYPE.EQ.2) THEN
C clear 255 colour sprite to background colour
CALL SPOP60(0, SPNAME, 0, ISCRR)
CALL GRARC2(0, 0, -NCOLR, KOLOUR)
CALL CLG
CALL NPOP60(ISCRR)
ENDIF
ENDIF
IF(IERR.EQ.0) INPICT(MTYPE) = .TRUE.
RETURN
C
C--- IFUNC = 12, Draw line. --------------------------------------------
C
120 CONTINUE
IF(INPICT(MTYPE)) THEN
IF(MTYPE.EQ.2) CALL SPOP60(0, SPNAME, 0, ISCRR)
CALL GRARC2(0, KOLNOW(MTYPE), NCOLR, KOLOUR)
CALL LINE(NINT(RBUF(1)), NINT(RBUF(2)),
1 NINT(RBUF(3)), NINT(RBUF(4)))
IF(MTYPE.EQ.2) CALL NPOP60(ISCRR)
ENDIF
RETURN
C
C--- IFUNC = 13, Draw dot. ---------------------------------------------
C
130 CONTINUE
IF(INPICT(MTYPE)) THEN
IF(MTYPE.EQ.2) CALL SPOP60(0, SPNAME, 0, ISCRR)
CALL GRARC2(0, KOLNOW(MTYPE), NCOLR, KOLOUR)
CALL SPOT(NINT(RBUF(1)), NINT(RBUF(2)))
IF(MTYPE.EQ.2) CALL NPOP60(ISCRR)
ENDIF
RETURN
C
C--- IFUNC = 14, End picture. ------------------------------------------
C
140 CONTINUE
IF(INPICT(MTYPE).AND.MTYPE.EQ.2) THEN
C write out sprite
CALL SPOP12(0, SPNAME)
C delete sprite
CALL SPOP25(0, SPNAME)
C update sprite name
I = ICHAR(SPNAME(9:9)) + 1
IF(I.LT.58) THEN
SPNAME(9:9) = CHAR(I)
ELSE
SPNAME(8:9) = CHAR(ICHAR(SPNAME(8:8)) + 1)//'0'
ENDIF
C give back memory
IF(NEEDSP.GT.0) THEN
IREGS(0) = 3
IREGS(1) = -NEEDSP
IF(SWIF77(?I2A, IREGS, IFLAG)) THEN
CALL GRGMSG(104)
CALL GRWARN('Failed to deallocate plot buffer.')
ENDIF
ENDIF
ENDIF
INPICT(MTYPE) = .FALSE.
RETURN
C
C--- IFUNC = 15, Select color index. -----------------------------------
150 CONTINUE
KOLNOW(MTYPE) = NINT(RBUF(1))
RETURN
C
C--- IFUNC = 16, Flush buffer. -----------------------------------------
C
160 CONTINUE
RETURN
C
C--- IFUNC = 17, Read cursor. ------------------------------------------
C
170 CONTINUE
IF(MTYPE.EQ.2) RETURN
C display pointer
CALL OSCLI('Pointer')
C wait until button(s) and keys are released
172 CALL MOUSE(I4X0, I4Y0, I4B)
IF(I4B.NE.0 .OR. INKEY(0).GT.0) GO TO 172
C move to desired place
I4X0 = NINT(RBUF(1))
I4Y0 = NINT(RBUF(2))
MBUF(1) = 5 + IOR(ISHFT(I4X0, 8), ISHFT(I4Y0, 24))
MBUF(2) = ISHFT(I4Y0, -8)
CALL OSWORD(21, MBUF)
C anchor position
I4X1 = NINT(RBUF(3))
I4Y1 = NINT(RBUF(4))
C band mode
I4MODE = NINT(RBUF(5))
C initial band
IF(I4MODE.GT.0) THEN
C set colour of banding
CALL GRARC2(3, KOLNOW(MTYPE), NCOLR, KOLOUR)
CALL GRARC3
ENDIF
C loop and wait for keystroke/button click
174 CONTINUE
C get mouse pointer status
CALL MOUSE(I4X2, I4Y2, I4B)
C check for key press
KEY = INKEY(0)
C 'select' = 'A'
IF(I4B.EQ.4) KEY = 65
C 'menu' = 'D'
IF(I4B.EQ.2) KEY = 68
C 'adjust' = 'X'
IF(I4B.EQ.1) KEY = 88
IF(I4MODE.GT.0) THEN
IF(I4X2.NE.I4X0 .OR. I4Y2.NE.I4Y0) THEN
C wait for frame scan
CALL OSBYTE(19,0,0)
C clear the old band
CALL GRARC3
C move the band
I4X0 = I4X2
I4Y0 = I4Y2
C draw the new band
CALL GRARC3
ENDIF
ENDIF
IF(KEY.LE.0) GO TO 174
C erase final band
IF(I4MODE.GT.0) CALL GRARC3
C return current position
RBUF(1) = FLOAT(I4X2)
RBUF(2) = FLOAT(I4Y2)
NBUF = 2
C and character
CHR(1:1) = CHAR(KEY)
LCHR = 1
RETURN
C
C--- IFUNC = 18, Erase alpha screen. -----------------------------------
C
180 CONTINUE
RETURN
C
C--- IFUNC = 19, Set line style. ---------------------------------------
C
190 CONTINUE
RETURN
C
C--- IFUNC = 20, Polygon fill. -----------------------------------------
C
200 CONTINUE
RETURN
C
C--- IFUNC = 21, Set color representation. -----------------------------
C
210 CONTINUE
ICOL = NINT(RBUF(1))
IRED = NINT(RBUF(2)*255.)
IGRN = NINT(RBUF(3)*255.)
IBLU = NINT(RBUF(4)*255.)
KOLOUR(ICOL) = ISHFT(IBLU, 24) + ISHFT(IGRN, 16) + ISHFT(IRED, 8)
IF(NCOLR.EQ.15.AND.INPICT(MTYPE)) THEN
IF(MTYPE.EQ.2) THEN
CALL GRARC1(SPNAME, ICOL, KOLOUR(ICOL))
ELSE
CALL VDU19(ICOL, 16, IRED, IGRN, IBLU)
ENDIF
ENDIF
RETURN
C
C--- IFUNC = 22, Set line width. ---------------------------------------
C
220 CONTINUE
RETURN
C
C--- IFUNC = 23, Escape. -----------------------------------------------
C
230 CONTINUE
RETURN
C
C--- IFUNC = 24, Rectangle fill. ---------------------------------------
C
240 CONTINUE
IF(INPICT(MTYPE)) THEN
IF(MTYPE.EQ.2) CALL SPOP60(0, SPNAME, 0, ISCRR)
CALL GRARC2(0, KOLNOW(MTYPE), NCOLR, KOLOUR)
CALL RECTAN(NINT(RBUF(1)), NINT(RBUF(2)),
1 NINT(RBUF(3)), NINT(RBUF(4)), .TRUE.)
IF(MTYPE.EQ.2) CALL NPOP60(ISCRR)
ENDIF
RETURN
C
C--- IFUNC = 25, Set fill pattern. -------------------------------------
C
250 CONTINUE
RETURN
C
C--- IFUNC = 26, Line of pixels. ---------------------------------------
C
260 CONTINUE
IF(.NOT.INPICT(MTYPE)) RETURN
IF(MTYPE.EQ.2) CALL SPOP60(0, SPNAME, 0, ISCRR)
IX = NINT(RBUF(1))
IY = NINT(RBUF(2))
K1 = NINT(RBUF(3))
IX1 = IX
DO 264 I = 3 + IXSTEP(MTYPE), NBUF, IXSTEP(MTYPE)
K2 = NINT(RBUF(I))
IF(K1.NE.K2) THEN
CALL GRARC2(0, K1, NCOLR, KOLOUR)
IF(IX.EQ.IX1) THEN
CALL SPOT(IX, IY)
ELSE
CALL LINE(IX1, IY, IX, IY)
ENDIF
K1 = K2
IX1 = IX + IXSTEP(MTYPE)
ENDIF
IX = IX + IXSTEP(MTYPE)
264 CONTINUE
CALL GRARC2(0, K2, NCOLR, KOLOUR)
IF(IX.EQ.IX1) THEN
CALL SPOT(IX, IY)
ELSE
CALL LINE(IX1, IY, IX, IY)
ENDIF
IF(MTYPE.EQ.2) CALL NPOP60(ISCRR)
RETURN
C
C--- IFUNC = 27, Not implemented ---------------------------------------
C
270 CONTINUE
RETURN
C
C--- IFUNC = 28, Not implemented ---------------------------------------
C
280 CONTINUE
RETURN
C
C--- IFUNC = 29, Query color representation. ---------------------------
C
290 CONTINUE
I = RBUF(1)
RBUF(2) = IAND(ISHFT(KOLOUR(I), -8), 255)/255.0
RBUF(3) = IAND(ISHFT(KOLOUR(I), -16), 255)/255.0
RBUF(4) = IAND(ISHFT(KOLOUR(I), -24), 255)/255.0
NBUF = 4
RETURN
C-----------------------------------------------------------------------
END
C
SUBROUTINE GRARC1(SPNAME, I, KOL)
DIMENSION IREGS(0:9)
CHARACTER *(*) SPNAME, NAME*12
EQUIVALENCE(IPP, IREGS(4))
LOGICAL SWIF77
C set sprite palette I to KOL (Only in RISC-OS 3)
NAME = SPNAME
L = LNBLNK(NAME)
NAME(L+1:L+1) = CHAR(0)
IREGS(0) = 37
IREGS(1) = 0
IREGS(2) = LOCC(NAME)
IREGS(3) = -1
C do SpriteOp 37
IF(SWIF77(?I2E, IREGS, IFLAG))RETURN
IF(IPP.EQ.0) RETURN
IOFF = (IPP - LOC(IREGS))/4
C address of palette is now IREGS(IOFF)
KK = IOR(16, IAND(KOL, ?IFFFFFF00))
IREGS(IOFF+I+I) = KK
IREGS(IOFF+I+I+1) = KK
RETURN
END
C
SUBROUTINE GRARC2(IACT, KOLNOW, NCOLR, KOLOUR)
C set up currrent graphics colour and action
DIMENSION IREGS(0:9), KOLOUR(0:255)
IF(IABS(NCOLR).EQ.15) THEN
IF(NCOLR.GT.0) THEN
CALL GCOL(IACT, KOLNOW)
ELSE
CALL GCOL(IACT, KOLNOW + 128)
ENDIF
ELSE
IREGS(0) = KOLOUR(KOLNOW)
IREGS(3) = 0
IF(NCOLR.LT.0) IREGS(3)=128
IREGS(4) = IACT
C do ColourTrans_SetGCOL
CALL SWIF77(?I040743, IREGS, IFLAG)
ENDIF
RETURN
END
C
SUBROUTINE GRARC3
C common for communicating with rubber banding GRARC3
COMMON /GRARCC/ MAXX(2), MAXY(2), I4X0, I4Y0, I4X1, I4Y1, I4MODE
INTEGER MAXX, MAXY, I4X0, I4Y0, I4X1, I4Y1, I4MODE
C only used for MTYPE=1, i.e. MAXX(1) and MAXY(1)
C
C draw band of type I4MODE from (I4X1,I4Y1) to (I4X0,I4Y0)
C I4MODE = 1: ordinary rubber band
C 2: rectangular box
C 3: horizontal lines
C 4: vertical lines
C 5: horizontal line through (I4X0,I4Y0) only
C 6: vertical line through (I4X0,I4Y0) only
C 7: vertical and horizontal lines through (I4X0,I4Y0) only
C
GO TO (10, 20, 30, 40, 32, 42, 70), I4MODE
RETURN
C ordinary rubber band
10 CALL LINE(I4X1, I4Y1, I4X0, I4Y0)
RETURN
C rectangular box
20 CALL RECTAN(I4X1, I4Y1, I4X0, I4Y0, .FALSE.)
RETURN
C horizontal lines
30 CALL LINE(0, I4Y1, MAXX, I4Y1)
32 CALL LINE(0, I4Y0, MAXX, I4Y0)
RETURN
C vertical lines
40 CALL LINE(I4X1, 0, I4X1, MAXY)
42 CALL LINE(I4X0, 0, I4X0, MAXY)
RETURN
C vertical and horizontal lines through (I4X0,I4Y0) only
70 CALL LINE(0, I4Y0, MAXX, I4Y0)
GO TO 42
END
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