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SPACE 2
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SPACE - Library 2 - Volume 1.iso
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gemfsc14
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aessrc14
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aesfsel2.s
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1989-07-22
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;*========================================================================
;*
;* AESFAST Public Domain GEM bindings.
;* Maintenance:
;* 02/11/89 v1.1: This source file is new with this version.
;*
;* 04/07/89 v1.2:
;* The calculation of the location of the prompt on the
;* screen has been changed. It was placed one boxchar height
;* down on the screen, putting it right below the menu bar.
;* This didn't look too good on a big-monitor system, so now
;* it is calculated by centering the box, then subtracting a
;* fixed offset from the centered Y to make it appear right
;* above the fsel'er box. The offset is 9 character heights,
;* (plus 2 extra char heights for the prompt itself), less
;* 2 pixels (just to line everything up real neat).
;*
;* 07/22/89 v1.3:
;* Bugfix...A 'bra.s' instruction was missing just before the
;* 'strcpy' routine, causing 4 bombs on a pre-1.4 machine.
;*========================================================================
.include "aesfast.sh"
.include "gemfast.sh"
.extern _gl_apversion
.extern aesblock
;*************************************************************************
;*
;* Extended fsel manager routine.
;* (Including simulation routines for pre-TOS 1.4 systems).
;*
;*************************************************************************
;-------------------------------------------------------------------------
; fsel_exinput
; This function is new with TOS 1.4, but this binding supports it in all
; TOS/AES versions with a simulation of the new routine's actions if the
; AES version we're running under is pre-TOS 1.4
;-------------------------------------------------------------------------
_fsel_exinput::
.cargs #8,.pinpath.l,.pinsel.l,.pbutton.l,.plabel.l
link a6,#-4
move.w _gl_apversion,d0 ; Check the AES version. If
cmp.w #$0104,d0 ; it's $0104, we're running
beq.s .ramaes ; on the RAM-based TOS 1.4
cmp.w #$0130,d0 ; Else, if it's less than $0130
blt simu_exinput ; we have to simulate exinput.
.ramaes:
move.l .plabel(a6),d0 ; Swap the button and prompt
move.l .pbutton(a6),.plabel(a6) ; string pointers to make the
move.l d0,.pbutton(a6) ; addrin stuff contiguous.
AControl 91,0,2,3 ; AES v1.3 & up: fsel_exinput
moveq.l #-4,d2 ; is a legal function, do it.
lea .pinpath(a6),a0 ; a0 -> addrin
ACall RET2HERE ; Call AES.
move.l .plabel(a6),d0 ; Swap the prompt string and
move.l .pbutton(a6),.plabel(a6) ; button pointers back to how
move.l d0,.pbutton(a6) ; they were on entry.
moveq.l #-4,d1 ; Return values from
lea .pbutton(a6),a1 ; intout[] array to caller
jmp (a0) ; via aes_return routine.
;*************************************************************************
; The following code and data supports the exinput simulation routines.
;
; The simulator supports *most* of the TOS 1.4 features, to wit:
;
; - A prompt string of up to 30 chars is displayed with the file selector.
; - The file selector handles <CR> like TOS 1.4 does (see comments below).
; - If the caller passes in a path with a leading '\' it will be appended
; to the current default drive & path (and the whole resulting string
; will be returned upon exit).
; - The current DTA is preserved.
; - The current drive and path is preserved.
;
; These are differences between the simulator and TOS 1.4:
;
; - There are no drive buttons in the dialog.
; - There is still a static limit of 100 files that can be displayed.
; - Long pathnames are NOT handled correctly.
; - Multiple abort/continue situations will still give problems.
; - The redraw sequence of the dialog is still the same.
;
; The things not supported are, of course, things I can't affect without
; completely re-writing the fsel_input handler.
;*************************************************************************
;-------------------------------------------------------------------------
; Define variables which will be accessed as offsets from a3.
; (Storage for these things will be allocated from the stack at runtime).
;-------------------------------------------------------------------------
.abs ; Define offsets from a3 base register...
savddrv: ds.w 1 ; Save default drive.
savdpath: ds.b 128 ; Save default path.
savipath: ds.b 128 ; Save input path for compare after <CR>.
savdta: ds.l 1 ; Save pointer to current DTA.
tmpdta: ds.b 44 ; Temporary DTA for fsel_input to use.
SAV_SZ = * ; Size of a3-relative storage.
;-------------------------------------------------------------------------
; Define variables which will be accessed as offsets from a5.
; (Storage for these things is allocated in the text segment, below).
;-------------------------------------------------------------------------
.abs ; Define offsets from a5 base register...
prmpflag: ds.w 1 ; Flag: Has one-time object fixup been done?
treeptr: ds.l 1 ; Ptr to tree: addrin for objc_draw() et. al.
azero: ds.w 1 ; A handy zero.
dialstuf: ds.w 1 ; Here things get a little ugly: The storage
ds.w 2 ; from 'dialstuff' down is the intin array
prmpstob: ds.w 1 ; for form_dial(FMD_FINISH). From prmpstob
prmpdpth: ds.w 1 ; down, it is also the intin array for
prmpclip: ds.w 4 ; objc_draw().
lastkeyCR:ds.w 1 ; Flag: was last keystroke during fsel a <CR>?
ABS_SZ = * ; Size of the a5-relative storage block.
.text
absstore: dcb.b ABS_SZ,0 ; Set aside memory for the a5-relative block.
;-------------------------------------------------------------------------
; Define the TEDINFO and OBJECT structures for the prompt text.
; (Macros for defining these things come from gemfast.sh).
;-------------------------------------------------------------------------
YSZ_PROMPT = 2
YSZ_FSEL = 9
Y_OFFSET = YSZ_PROMPT+YSZ_FSEL
prmptext: Teddef 0,0,0,3,0,TE_CNTR,$1180,0,1,31,0
prmptree: Treedef text
Objdef ,-1,-1,-1,G_BOXTEXT,LASTOB,NORMAL,0,0,0,40,YSZ_PROMPT
;-------------------------------------------------------------------------
; This routine is installed as a hook in the BIOS vector for the duration
; of the the fsel_input call. It watches for a Bconin(2) call (which will
; be the AES asking for a character). The Bconin call is done from in
; here such that we get the character back from the real BIOS and examine
; it. If the character is a <CR>, we set the flag to say so and return
; the character to the caller. If not a <CR> we clear the flag and
; return the character.
;
; The whole reason for this is a bug in the pre-TOS 1.4 AES: If the user
; edited the path but didn't click the mouse on anything or change the
; filename field, then hit <CR>, the system returned a CANCEL status. This
; BIOS hook is the only way to tell for sure that the exit was via <CR>.
;-------------------------------------------------------------------------
oldbios: dc.l 0 ; Old BIOS vector address.
bioshook:
lea 6(sp),a0 ; Assume super mode caller.
btst.b #5,(sp) ; Were we in super mode?
bne.s .supermode ; No, user mode...
move.l usp,a0 ; So look at parms on user stack.
.supermode:
move.l #$00020002,d0 ; Bconin(2) function...
cmp.l (a0),d0 ; Is it that?
bne.s .biospunt ; Nope, punt.
move.l d0,-(sp) ; Stack Bconin(2) function code,
bsr.s .bioscall ; Go get the character.
addq.l #4,sp
lea absstore(pc),a0 ; Point to common storage base.
cmp.b #'\r',d0 ; Is the char a <CR>? If so set the
seq lastkeyCR(a0) ; flag, either way, return the char.
.biosreturn:
rte ; Return the char to the caller.
.bioscall: ; Call original BIOS, with return
move.w sr,-(sp) ; to caller of 'bioscall'.
.biospunt:
move.l oldbios(pc),-(sp) ; Not a BIOS function we handle,
rts ; punt control to the real BIOS.
;-------------------------------------------------------------------------
; This routine lets us call AES more quickly than going through the
; routines in AESCOMN (and is better tailored to our needs here).
;-------------------------------------------------------------------------
aes_icall:
movep.l d0,control+1(a4) ; fill in the control array (!),
move.l a0,padrin(a4) ; store the adrin ptr into aespb
move.l a1,pintin(a4) ; store the intin ptr into aespb
move.l a2,pintout(a4) ; store it into aespb
move.l a4,d1 ; move the aespb pointer to the
move.w #$C8,d0 ; interface register, also the AES
trap #2 ; function code, call AES, return
rts ; to the calling binding routine.
;-------------------------------------------------------------------------
; simu_exinput - Simulate an exinput call on pre-TOS 1.4 systems.
;-------------------------------------------------------------------------
simuregs reg a2-a5 ; Registers we use.
simu_exinput:
movem.l #simuregs,-(sp) ; Save registers.
lea absstore(pc),a5 ; Load storage base register.
lea aesblock,a4 ; Load aesblock base register.
tas prmpflag(a5) ; Has first-time object tree fixup
bne do_simulation ; been done? If so, continue below.
;-------------------------------------------------------------------------
; Do the one-time object tree fixup:
;
; - Plug in the various static string pointers.
; - Plug in a couple of static integer values.
; - Call rsrc_obfix for resolution-specific x/y/w/h fixup.
; - Call form_center to center box in the x coord & calc the clip area.
; - Call graf_handle to get the height of a boxchar, and use this height
; as the ob_y of the prompt box (and the clip area). It just so happens
; that the AES menu bar is one 'boxchar' in height, so this guarantees
; we never overlay the menu bar with our prompt.
;-------------------------------------------------------------------------
lea azero(a5),a1 ; To do fixup, set string pointers
lea prmptext(pc),a0 ; in TEDINFO and OBJECT structures.
move.l a1,te_ptmplt(a0) ; The template and valid strings
move.l a1,te_pvalid(a0) ; are NULL. The ob_spec pointer
lea prmptree(pc),a3 ; in the tree must point to the
move.l a0,ob_spec(a3) ; TEDINFO structure.
move.l a3,treeptr(a5) ; Save the tree pointer.
move.w #MAX_DEPTH,prmpdpth(a5) ; Set objc_draw max-depth.
move.w #FMD_FINISH,dialstuf(a5) ; Set form_dial type.
subq.l #2,sp ; allocate intout[1]
move.l sp,a2 ; a2 -> intout
lea azero(a5),a1 ; a1 -> intin
lea treeptr(a5),a0 ; a0 -> adrin
AControl 114,1,1,1 ; rsrc_obfix(prmptree,R_TREE);
bsr aes_icall ; do it.
addq.l #2,sp ; we don't care about intout[0].
sub.w #10,sp ; Allocate intout[5]
move.l sp,a2 ; a2 -> intout
lea treeptr(a5),a0 ; a0 -> addrin (prmptree)
AControl 54,0,5,1 ; form_center(prmptree, &stack);
bsr aes_icall ; do it.
addq.l #2,sp ; We don't care about intout[0],
move.l (sp)+,prmpclip(a5) ; the rest of intout is the
move.l (sp)+,prmpclip+4(a5); clip rectangle, save it.
sub.w #10,sp ; Allocate intout[5], make a2 point
move.l sp,a2 ; to it. Do graf_handle(&stack).
AControl 77,0,5,0 ; The only value we want back from
bsr aes_icall ; the call is the height of a char
addq.l #4,sp ; which is in intout[2], put that
move.w (sp)+,d0 ; in d0, throw everything else away.
addq.l #4,sp ; Calc the placement of the prompt
mulu #Y_OFFSET,d0 ; box as Y_OFFSET characters up from
subq.w #2,d0 ; the current (centered) location,
sub.w d0,ob_y(a3) ; set the ob_y value in the tree
sub.w d0,prmpclip+2(a5) ; and clip rectange to this value.
bra.s do_simulation ; Continue with simulation below.
strcpy:
move.b (a0)+,(a1)+
bne.s strcpy
rts
strcmp:
move.b (a0)+,d0
beq.s .checkdone
cmp.b (a1)+,d0
beq.s strcmp
rts
.checkdone:
tst.b (a1)
rts
;-------------------------------------------------------------------------
; Once the one-time stuff is done (and on all subsequent calls...) do
; the actual simulation of the TOS 1.4 exinput:
;
; - Plug the prompt string pointer into the TEDINFO.
; - The current default drive and path is saved.
; - The current DTA address is saved, and a temporary DTA is installed.
; - If the pathname passed to exinput starts with a '\', the passed-in
; path is appended to the current default path.
; - A hook is placed into the BIOS vector to watch for <CR> being hit,
; so that we can mimick the new fsel's actions when just the pathname
; is edited, and the user hits <CR> (to move to the filename field).
; - The prompt string is placed in a box above the fsel dialog box on the
; screen (but below the menu bar) before the system fsel'er is called.
; The prompt is displayed inside a box, (it's a BOXTEXT object, which
; is the entire tree). The prompt is displayed with an objc_draw, and
; removed by sending a redraw message (via form_dial).
; - Call fsel_input() (the old one).
; - Check to see if our BIOS hook set the flag saying a <CR> was the last
; key hit. If so, see if the pathname in the fsel dialog was changed.
; If so, the user probably hit <CR> after typing the path (I always do),
; so we loop back to do the fsel dialog again. If the user clicked on
; OK instead of hitting return, this won't happen. Also, if the user
; doesn't change the path (but perhaps does change the filename), then
; hits return, we will not repeat the dialog.
; - Call form_dial() to send a redraw message to clear the prompt box.
; - Restore the current drive & path, and the old DTA.
; - De-install the BIOS hook.
; - Return to caller.
;-------------------------------------------------------------------------
do_simulation:
.cargs #8,.pinpath.l,.pinsel.l,.pbutton.l,.plabel.l
sub.w #SAV_SZ,sp ; Allocate save area from stack,
move.l sp,a3 ; load save area base register.
move.w #$19,-(sp)
trap #1
addq.l #2,sp
move.w d0,savddrv(a3)
add.b #'A',d0
move.b d0,savdpath(a3)
move.b #':',1+savdpath(a3)
clr.w -(sp)
pea 2+savdpath(a3)
move.w #$47,-(sp)
trap #1
addq.l #8,sp
tst.b 2+savdpath(a3)
bne.s .gotpath
move.w #$5C00,2+savdpath(a3) ; 5C00 == "\<NULL>"
.gotpath:
move.w #$2F,-(sp)
trap #1
move.l d0,savdta(a3)
addq.l #2,sp
pea tmpdta(a3)
move.w #$1A,-(sp)
trap #1
addq.l #6,sp
move.l .pinpath(a6),a0 ; a0 -> input path
lea savipath(a3),a1 ; a0 -> path save area
cmp.b #'\\',(a0) ; Leading '\' in input path?
bne.s .copypath ; Nope, go do straight copy.
lea savdpath(a3),a0 ; Yep, so copy the current
bsr strcpy ; default path to the save
cmp.b #'\\',-2(a1)
bne.s .noterm
subq.l #1,a1
.noterm:
move.l .pinpath(a6),a0 ; area first, then concat
subq.l #1,a1 ; the input path onto the
bsr strcpy ; end of it. Since we changed
lea savipath(a3),a0 ; it in the save area, we need to
move.l .pinpath(a6),a1 ; copy it back to the input area.
.copypath:
bsr strcpy
lea prmptext(pc),a0 ; a0 -> te_ptext in TEDINFO.
move.l .plabel(a6),(a0) ; Set prompt text pointer.
subq.l #2,sp ; allocate intout[1]
move.l sp,a2 ; a2 -> intout
lea prmpstob(a5),a1 ; a1 -> intin
lea treeptr(a5),a0 ; a0 -> addrin
AControl 42,6,1,1 ; objc_draw(prmptree,R_TREE....);
bsr aes_icall ; do it.
addq.l #2,sp ; throw away intout[0].
pea bioshook(pc)
move.w #$2D,-(sp)
move.w #5,-(sp)
trap #13
addq.l #8,sp
lea oldbios(pc),a0
move.l d0,(a0)
.fsel_loop:
clr.w lastkeyCR(a5) ; Clear <CR> flag.
lea -4(a6),a2 ; a2 -> intout
lea .pinpath(a6),a0 ; a0 -> addrin
AControl 90,0,2,2 ; fsel_input(inpath, insel,...);
bsr aes_icall ; do it.
tst.w lastkeyCR(a5) ; Hack to fix an AES bug: If our
beq.s .fsel_done ; BIOS hook says the last key was
move.w #1,-2(a6) ; a CR, force the button to OK.
move.l .pinpath(a6),a0
lea savipath(a3),a1
bsr strcmp
beq.s .fsel_done
move.l .pinpath(a6),a0
lea savipath(a3),a1
bsr strcpy
bra.s .fsel_loop
.fsel_done:
subq.l #2,sp ; allocate intout[1] for form_dial
move.l sp,a2 ; a2 -> intout
lea dialstuf(a5),a1 ; a1 -> intin
AControl 51,9,1,0 ; form_dial(FMD_FINISH,...);
bsr aes_icall ; this sends a redraw message to
addq.l #2,sp ; clean up our prompt text box.
move.w savddrv(a3),-(sp)
move.w #$0E,-(sp)
trap #1
addq.l #4,sp
pea savdpath(a3)
move.w #$3B,-(sp)
trap #1
addq.l #6,sp
move.l savdta(a3),-(sp)
move.w #$1A,-(sp)
trap #1
addq.l #6,sp
move.l oldbios(pc),-(sp)
move.w #$2D,-(sp)
move.w #5,-(sp)
trap #13
addq.l #8,sp
add.w #SAV_SZ,sp ; Deallocate save area from stack.
movem.l (sp)+,#simuregs ; Restore working regs.
move.l .pbutton(a6),a1 ; Return the values from
move.w -4(a6),d0 ; intout to the caller.
move.w -2(a6),(a1)
unlk a6
rts
; end of code