mirror of
https://github.com/elliotnunn/supermario.git
synced 2024-11-15 21:04:36 +00:00
176 lines
5.8 KiB
Plaintext
176 lines
5.8 KiB
Plaintext
;
|
|
; File: DAHandler.a
|
|
;
|
|
; Contains: The System Desk Accessory Handler application
|
|
;
|
|
; Written by: Phil Goldman
|
|
;
|
|
; Copyright: © 1986-1992 by Apple Computer, Inc., all rights reserved.
|
|
;
|
|
; Change History (most recent first):
|
|
;
|
|
; <5> 9/29/92 DRF Put back the END that got deleted in <4>
|
|
; <4> 9/25/92 DRF Get rid of MyGestalt
|
|
; <2> 1/3/91 fjs (DFH) pass edit function keys to DAHandler
|
|
; <0> x/xx/86 PYG New Today.
|
|
;
|
|
;--------------------------------------------------------------------
|
|
|
|
CASE OBJECT
|
|
LOAD 'ProcessMgrIncludes.D'
|
|
|
|
; CloseFrontDeskWindow. A utility function that calls the DA to close the front
|
|
; window. Uses a little-known hook which exists for this very purpose.
|
|
; NOTE: This code was ripped off from the desk manager. The hook is not documented,
|
|
; so I tried to keep the register usage the same (e.g. a1 points to the DCE, d0 and a0
|
|
; point to the hook).
|
|
;
|
|
; void CloseFrontDeskWindow(void);
|
|
;
|
|
CloseFrontDeskWindow PROC EXPORT
|
|
subq.l #$4,sp ; make room for function value
|
|
_FrontWindow ; get pointer to frontmost window
|
|
movea.l (sp)+,a0 ; pop the window pointer
|
|
move.l a0,d0 ; nil?
|
|
beq.s CFDWExit ; jump if so
|
|
|
|
move.w windowKind(a0),d1 ; get the unit number from window
|
|
bpl.s CFDWExit ; if not sys. kind, ignore it
|
|
move.w d1,-(sp) ; push refnum for CloseDeskAcc
|
|
not d1 ; flip it (bitwise)
|
|
asl #2,d1 ; * 4
|
|
move.l UTableBase,a0 ; point to the driver table
|
|
move.l 0(a0,d1),a0 ; get the handle
|
|
move.l (a0),a1 ; dereference
|
|
|
|
move.l CloseOrnHook,d0 ; is there a hook installed?
|
|
bne.s DoCloseHook ; if so, use it
|
|
_CloseDeskAcc ; close the DA
|
|
|
|
CFDWExit
|
|
rts ; bye now!
|
|
|
|
; DA seems to have a hook installed
|
|
; Make sure that a1 == DCE pointer, a0 == d0 == hook address
|
|
DoCloseHook
|
|
addq.l #2,sp ; restore stack pointer
|
|
move.l d0,a0 ; hook address in both a0 and d0
|
|
jsr (a0) ; invoke it
|
|
bra.s CFDWExit ; all done
|
|
|
|
ENDPROC
|
|
|
|
; Patch to Close so that we kill the DA when its resource file is closed.
|
|
ClosePatch PROC EXPORT
|
|
IMPORT oldCloseAddress:DATA
|
|
IMPORT HandleCloseDA:CODE
|
|
|
|
; push parameter for (potential) call to HandleCloseDA()
|
|
move.l a5,-(sp) ; save a5
|
|
move.l CurrentA5,a5 ; set up with application a5
|
|
|
|
subq.w #4,sp ; d0 result of old call will go here
|
|
move.w ioRefNum(a0),-(sp) ; put refnum in lo word
|
|
move.w #0,-(sp) ; clear hi word on stack
|
|
|
|
pea CPBackFromOldRoutine ; push local return address
|
|
move.l oldCloseAddress,-(sp) ; push old routine on stack
|
|
rts ; do it (w/ a-regs untouched!)
|
|
CPBackFromOldRoutine
|
|
move.l d0,4(sp) ; save d0 across the call
|
|
bmi.s CPDone ; if errors, done
|
|
|
|
jsr HandleCloseDA ; remove from refnum list
|
|
move.l 4(sp),d0 ; restore d0 trashed by the call
|
|
CPDone
|
|
addq.w #8,sp ; skip param, saved d0
|
|
move.l (sp)+,a5 ; restore a5
|
|
rts ; and return
|
|
|
|
ENDPROC
|
|
|
|
; Patch to SystemEvent so that we intercept cmd-Q and cmd-W from DA.
|
|
AlphaCaseMask EQU $DF
|
|
cmdKeyMeta EQU (cmdKey - 8)
|
|
FunctionKey EQU $10
|
|
UndoKey EQU $7A
|
|
CutKey EQU $78
|
|
CopyKey EQU $63
|
|
PasteKey EQU $76
|
|
SystemEventPatch PROC EXPORT
|
|
IMPORT oldSystemEventAddress:DATA
|
|
|
|
subq #4,sp ; save room for old call
|
|
movem.l d0/a0/a5,-(sp) ; preserve a work register
|
|
move.l 20(sp),a0 ; get pointer to event record
|
|
cmpi.w #keyDwnEvt,EvtNum(a0) ; is it key down?
|
|
bne.s SEPDoCall ; jump if not
|
|
|
|
move.l evtMessage(a0),d0 ; get key
|
|
cmp.b #FunctionKey,d0 ; is it the function key ?
|
|
bne.s @cmdkey ; if not, check for cmd key
|
|
and.l #keyCodeMask,d0 ; get key code
|
|
lsr.l #8,d0 ; into byte of d0
|
|
cmp.b #UndoKey,d0
|
|
beq.s SEPReturnFalse ; jump if so
|
|
cmp.b #CutKey,d0
|
|
beq.s SEPReturnFalse ; jump if so
|
|
cmp.b #CopyKey,d0
|
|
beq.s SEPReturnFalse ; jump if so
|
|
cmp.b #PasteKey,d0
|
|
beq.s SEPReturnFalse ; jump if so
|
|
bra.s SEPDoCall ; pass it through
|
|
|
|
@cmdkey btst.b #cmdKeyMeta,evtMeta(a0) ; is cmd-key down?
|
|
beq.s SEPDoCall ; jump if not
|
|
move.l evtMessage(a0),d0 ; get key
|
|
and.b #AlphaCaseMask,d0 ; make it uppercase
|
|
cmp.b #'Q',d0 ; is it Q?
|
|
beq.s SEPReturnFalse ; jump if so
|
|
cmp.b #'W',d0 ; is it W?
|
|
beq.s SEPReturnFalse ; jump if so
|
|
SEPDoCall
|
|
move.l CurrentA5,a5 ; set up application a5
|
|
move.l oldSystemEventAddress,12(sp) ; old routine address
|
|
movem.l (sp)+,d0/a0/a5 ; restore registers
|
|
SEPReturn
|
|
rts
|
|
|
|
; the event is a cmd-Q, return false so we'll see the event later
|
|
SEPReturnFalse
|
|
move.l 16(sp),a0 ; get return address
|
|
move.l a0,20(sp) ; move it down
|
|
movem.l (sp)+,d0/a0/a5 ; restore registers
|
|
addq #8,sp ; dump param, space
|
|
clr.w 4(sp) ; say its not for us (return FALSE)
|
|
bra.s SEPReturn ; and return
|
|
|
|
ENDPROC
|
|
|
|
; A utility routine to copy a string into the system heap.
|
|
; Function prototype as seen from C --
|
|
;
|
|
; StringPtr GetSysHeapString(StringPtr pStr);
|
|
;
|
|
GetSysHeapString PROC EXPORT
|
|
|
|
clr.l -(sp) ; assume retval is failure
|
|
move.l 8(sp),a0 ; param is src
|
|
moveq.l #1,d0 ; add 1 to...
|
|
add.b (a0),d0 ; ...string length to get block len
|
|
move.l d0,d1 ; save length
|
|
move.l a0,a1 ; save ptr
|
|
_NewPtr sys ; get space in system heap
|
|
bne.s GSHSDone ; if failure, branch
|
|
exg.l a0,a1 ; switch src/dest
|
|
move.l a1,(sp) ; and do the return value
|
|
move.l d1,d0 ; save length
|
|
_BlockMove
|
|
GSHSDone
|
|
move.l (sp)+,d0 ; pop retval into d0
|
|
rts
|
|
|
|
ENDPROC
|
|
|
|
END
|