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mac-rom/QuickDraw/CCrsrCore.a
Elliot Nunn 0ba83392d4 Bring in CubeE sources 
Resource forks are included only for .rsrc files. These are DeRezzed into their data fork. 'ckid' resources, from the Projector VCS, are not included.

The Tools directory, containing mostly junk, is also excluded.
2017-09-20 18:04:16 +08:00

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;
; File: CCrsrCore.a
;
; Contains: system cursor/mouse routines. Contains the mouse interrupt receivers
; and cursor drawing and hiding routines.
;
; Written by: Bud Tribble 2-Oct-81
;
; Copyright: © 1981-1993 by Apple Computer, Inc., all rights reserved.
;
; Change History (most recent first):
;
; <SM6> 9/12/93 SAM Changed all instances of _Translate24to32 to _rTranslate24to32
; so they can conditionalized out of the build.
; <SM5> 2/4/93 CSS Update from Horror:
; <H3> 7/13/92 djw <GED> Overpatched DrawCursor, EraseCursor and SetCrsrData,
; vectorizing them to allow access later.
; <SM4> 6/11/92 stb <sm 6/9/92>stb Add comments from QDciPatchROM.a to ShowCursor,
; SetCCursor
; <SM3> 5/16/92 kc Add forRom conditionals around last change.
; <SM2> 5/16/92 kc Roll in Horror. Comments follow:
; <H2> 2/12/92 SWC Patched out most of CrsrVBLTask since the new cursor
; acceleration code does things differently.
; <7> 7/10/91 dba end of the forPost70 conditional; we are past 7.0 for good
; <6> 5/31/91 KON Register A2 gets trashed when setting a color cursor and there
; is more than one GDevice.
; <5> 9/17/90 BG Removed <4>. 040s are now behaving more reliably.
; <4> 6/25/90 BG Added EclipseNOPs for flakey 040s.
; <3> 6/25/90 KON Obscure-show-hide leaves crsr hidden only, Obscure-hide-show
; leaves crsr obscured only.
; <2> 1/3/90 BAL Updated to latest local source version.
; <¥1.7> 7/14/89 BAL For Aurora: Final CQD
; <1.6> 6/10/89 CEL Moved Private.a QuickDraw Equates into proper QuickDraw private
; file (colorequ.a), got rid of QuickDraw nFiles dependencies and
; fixed up necessary filesÉ
; <¥1.5> 5/29/89 BAL Blasting in 32-Bit QuickDraw version 1.0 Final
; 4/7/89 BAL Moved crsrVBLTask to head of file and scrnAddress to end of file
; for VM.
; 9/7/88 BAL Altered showCursor to clear crsrObscure if showing cursor.
; 6/28/88 BAL Use special 1 to 24 bit pixel expansion routine.
; 6/21/88 BAL Finally fixed SetCCursor; Needed to Lock input handle across
; routine.
; 3/25/88 BAL Altered Show/Hide Cursor to use 32 bit clean addresses.
; 3/23/88 BAL Fixed bug in CrsrRect.right for pixel depth > 1.
; <C944> 11/7/87 BAL Rolled in patches to SetCCursor to preserve A2.
; 5/27/87 EHB Added fix to SetCCursor for trashed A2
; <C856> 5/26/87 CSL Fixed absolute cursor positioning problem.
; 10/13/86 EHB Rolled in new version of CrsrVBLTask
; 10/13/86 EHB Added AllocCrsr; called by AllocCursor.
; 10/6/86 EHB Added SetCCursor; redid other routines to support color.
; 10/2/86 EHB Redid inner loop of ShowCursor for color support
; 7/14/86 EHB Don't draw cursor if CRSRPTR not set up.
; <C63> 7/2/86 EHB CLEAR D0 BEFORE CALLING EXTBL ROUTINES. Multiply offset amount
; by depth for left pinning Check 8 longs of cursor
; <C63> 7/2/86 EHB Include colorequ in great equate purge
; <C60> 6/30/86 EHB New ShowCursor/HideCursor for depth support Fixed branch bug in
; ShieldCursor
; <C28> 5/30/86 CSL Added changes for Aladdin, and Aladdin Front desk bus support.
; <C1> 5/6/86 RDC Added fixes in ShowCursor routine
; <C1> 4/15/86 RDC Added changes for new 68020 Reno project (NuMac) - Added include
; for newequ.text to get at low mem equates for screen vars -
; Added changes in Cursor routines to use low mem for screen
; values
; 2/19/86 BBM Made some modifications to work under MPW
;_______________________________________________________________________
;
; Before Lonely Hearts
;_______________________________________________________________________
; 11/5/85 JTC for ELR (on telephone) Fix loop termination condition in
; HideCursor that killed MacPaint, e.g.
; 7/25/85 RDC Added include for HWequ file
; 7/23/85 RDC Moved mouse interrupt routines to IntHnd.Text
; 4/23/85 JTC Change to PIN hotSpot between 0 and 16, not 15. <23Apr85>
; 4/5/85 JTC Fix discontinuity in PinGuts; mask hotSpot with $000F000F in
; SetCursor; add ScreenAddress and ScreenSize to SysDef traplist;
; fix 'changed' test in SetCursor. Punted on desired call to get
; Cursor ID ... see Change note for details.
; 8/20/83 LAK Just uses CrsrThresh for scaling params.
; 8/18/83 LAK Changed name of CrsrTask to CrsrVBLTask (but why?).
; 7/20/83 SC Cleaned up after code review
; 4/28/83 AJH moved PinRect into crsrCore
; 1/28/83 AJH made SetCursor display it if its different
; 1/23/83 LAK Adapted for new equate files.
; 1/13/83 SC Decouple and scaled Cursor stuff
; 11/7/82 AJH Made ObscureCursor unbusy cursor if already obscured
; 10/16/82 LAK Modified for new LisaGraf cursor interface
; 9/5/82 LAK IntHnd now handles ext/sts interrupt resetting
; 8/26/82 LAK updated for 512-dots
; 8/5/82 LAK modified for INTHND change (no need to modify A0-1 for SCC port
; A) or read status reg.
; 5/4/82 LAK Updated MV1INT, MH1INT for SCC hardware
; 4/9/82 AJH Changed SHOWCURSOR to clip ala Rick Meyer's Lisa routines
; 10/31/81 AJH Hardwired the CRSR task into the VBL manager
; 10/19/81 bmw fixed a bug andy found in getscreen
; 7/3/81 AJH Installed "ObscureCursror" entry point and support
;
BLANKS ON
STRING ASIS
MACHINE MC68020 ;<C60/30JUN86>
cursorShadow EQU 0
CRSRCORE PROC EXPORT
EXPORT CrsrVBLTask
EXPORT InitCrTable
EXPORT PinRect
IMPORT ScrnAddress
IMPORT ScrnSize
IMPORT ScrnBitMap
IMPORT PATCONVERT ; expand routine for color cursors/patterns
IMPORT AllocCrsr ; proc at end of file
IMPORT SETCRSRDATA ; PROC AT END OF FILE
IMPORT SHFTTBL ; TO CONVERT DEPTH TO SHIFT
IMPORT RGetHSize
IMPORT BLITCURSOR,UNBLITCURSOR ; Cursor Pixelling <dvb 19sep88>
EXPORT DRAWCURSOR,ERASECURSOR ; Cursor Displaying <dvb 19sep88>
EXPORT CursorSect
EXPORT GETMAINCRSR ;JUST USED INTERNALLY
;
; offset table for jump table initialization
;
InitCrTable
DC.W HideCursor-InitCrTable
DC.W ShowCursor-InitCrTable
DC.W ShieldCursor-InitCrTable
DC.W ScrnAddress-InitCrTable
DC.W ScrnSize-InitCrTable
DC.W InitCursor-InitCrTable
DC.W SetCursor-InitCrTable
DC.W ObscureCursor-InitCrTable
DC.W AllocCrsr-InitCrTable
DC.W SetCCursor-InitCrTable
;_______________________________________________________________________
;
; CrsrVBLTask - executed once each vertical retrace
;
; ugly equs - stay here for now!
adbCount EQU 0 ; word: number of valid error deltas
MaxCnt EQU adbCount+2 ; word: limit on number of error deltas
Err7 EQU MaxCnt+2 ; word: time-7 error magnitude
Err6 EQU Err7+2 ; word: time-6 error magnitude
Err5 EQU Err6+2 ; word: time-5 error magnitude
Err4 EQU Err5+2 ; word: time-4 error magnitude
Err3 EQU Err4+2 ; word: time-3 error magnitude
Err2 EQU Err3+2 ; word: time-2 error magnitude
Err1 EQU Err2+2 ; word: time-1 error magnitude
Error EQU Err1+2 ; word: accumulated error
GSize EQU Error+2
CrsrVBLTask ;COME HERE ON VERTICAL RETRACE
If Not forRom Then ; <H2>
TST.B CrsrNew ; Mouse changed?
BEQ TrackDone ; No É return
TST.B CrsrBusy ; Cursor locked?
BNE TrackDone ; Yes É return
TST.B CrsrCouple ; Cursor coupled to mouse?
BEQ NoComp ; No É skip computation <DSV>
MOVE.W MTemp+H,D0 ; Find ÆMx
SUB.W RawMouse+H,D0
MOVE.W MTemp+V,D1 ; Find ÆMy
SUB.W RawMouse+V,D1
MOVE.W D0,D2 ; x := |ÆMx|
BGE.S AbslXl
NEG.W D2
AbslXl
MOVE.W D1,D3 ; y := |ÆMy|
BGE.S AbslYl
NEG.W D3
AbslYl
move.l MickeyBytes,a0 ; <10/7/86 SMH> get globals <c856/26May87>
CMP.W D2,D3 ; D3 := magnitude(x,y)
BLS.S MagDone
EXG D2,D3
MagDone ASR.W #1,D3
ADD.W D2,D3
BNE.S DoComp ; Zero magnitude É donÕt compute <c856/26May87>
MOVE.W #1,adbCount(A0) ; No hits <c856/26May87>
CLR.W Error(A0) ; No errors <c856/26May87>
BRA DoPin ; Update the cursor <c856/26May87>
DoComp
;
MOVEM.L D4-D5,-(A7) ; Save off registers
MOVE.W adbCount(A0),D4 ; D4 is the number of samples
CMP.W MaxCnt(A0),D4 ; Is Count less than MaxCnt
BGE.S CountOK
ADD.W #1,adbCount(A0) ; Yes É we will have one more error
CountOK
MOVE.W D3,D5 ; Magnitude at current time
MOVE.W D4,D2 ; Get Count
SUB.W #1,D2 ; Index into JTab
ASL.W #1,D2 ; REQUIRES BRA.SÕs IN JUMP TABLES
JMP JTab(PC,D2.W) ; Jump to the right code per Count
JTab BRA.S E1 ; Count = 1
BRA.S E2 ; Count = 2
BRA.S E3 ; Count = 3
BRA.S E4 ; Count = 4
BRA.S E5 ; Count = 5
BRA.S E6 ; Count = 6
BRA.S E7 ; Count = 7
E8 ADD.W Err7(A0),D5 ; Accumulate time-7 magnitude
E7 ADD.W Err6(A0),D5 ; Accumulate time-6 magnitude
MOVE.W Err6(A0),Err7(A0) ; Shift out time-6 magnitude
E6 ADD.W Err5(A0),D5 ; Accumulate time-5 magnitude
MOVE.W Err5(A0),Err6(A0) ; Shift out time-5 magnitude
E5 ADD.W Err4(A0),D5 ; Accumulate time-4 magnitude
MOVE.W Err4(A0),Err5(A0) ; Shift out time-4 magnitude
E4 ADD.W Err3(A0),D5 ; Accumulate time-3 magnitude
MOVE.W Err3(A0),Err4(A0) ; Shift out time-3 magnitude
E3 ADD.W Err2(A0),D5 ; Accumulate time-2 magnitude
MOVE.W Err2(A0),Err3(A0) ; Shift out time-2 magnitude
E2 ADD.W Err1(A0),D5 ; Accumulate time-1 magnitude
MOVE.W Err1(A0),Err2(A0) ; Shift out time-1 magnitude
E1 MOVE.W D3,Err1(A0) ; Shift out current magnitude
MOVE.W D4,D2 ; Round up the divide
ASR.W #1,D2 ; by half the denominator
ADD.W D2,D5
EXT.L D5 ; Set up for the divide
DIVU D4,D5 ; Find the average magnitude
MOVE.W D3,D4 ; Get the original magnitude
SUB.W D5,D3 ; Find distance to average magnitude
ADD.W Error(A0),D3 ; Add on the accumulated error
CMP.W #-1,D3 ; Define -1 div 2 = 0
BNE.S DivOK
CLR.W D3
DivOK ASR.W #1,D3 ; Get half of it
MOVE.W D3,Error(A0) ; Update it
ADD.W D5,D3 ; Desired mag is average+Error
CMP.W #255,D5 ; mag := MAX(mag,255)
BLS.S MaxDone
MOVE.B #255,D5
MaxDone
move.l MickeyBytes,a0 ; <10/7/86 SMH> get at globals
add #GSize,a0 ; <10/24/86 SMH> point to table
CLR.W D2 ; i := 0
Search ADD.B #1,D2 ; repeat
CMP.B (A0)+,D5 ; i := i+1
BHI.S Search ; until mag ² Table[i]
MULS D2,D3 ; D4 := i*(Mag(ÆM)+Error)
MULS D3,D0 ; ÆCx := (ÆMx*i*(Mag(ÆM)+Error))/Mag(ÆM)
DIVS D4,D0 ; <<<<<< D3 >>>>>>>
BMI.S @1 ; branch if minus
ANDI.W #$007F,D0 ; control max displacement (fix mouse jump)
BRA.S @3
@1
ORI.W #$FF80,D0 ; control max displacement (fix mouse jump)
@3
MULS D3,D1 ; ÆCy := (ÆMy*i*(Mag(ÆM)+Error))/Mag(ÆM)
DIVS D4,D1 ; <<<<<< D3 >>>>>>>
BMI.S @5 ; branch if minus
ANDI.W #$007F,D1 ; control max displacement (fix mouse jump)
BRA.S @7
@5
ORI.W #$FF80,D1 ; control max displacement (fix mouse jump)
@7
MOVEM.L (A7)+,D4-D5 ; Restore registers
ADD.W D0,RawMouse+H ; Update raw mouse location
ADD.W D1,RawMouse+V
;
DoPin ; <c456/26May87>
LEA CrsrPin,A0 ; Bounding rect for cursor
MOVE.L RawMouse,D0 ; Pin mouse inside rect
Endif ; Not forRom <H2>
BSR.S ScrnPin ; return to SHOWIT if screen changes
MOVE.L D0,RawMOUSE ; update cursor loc with clipped pt
MOVE.L D0,MTEMP ; Update real mouse location with ""
AND.L MOUSEMASK,D0 ; do jerky masking to drop low order bits
MOVE.L MOUSEOffset,D1 ; Get the offset
BEQ.S skipPin ; and skip 2nd pin if not
ADD.L D1,D0 ; do jerky offset
BSR.S ScrnPin ; return to SHOWIT if screen changes
skipPin MOVE.L D0,MOUSE
NotCup BSR ERASECURSOR ; HIDE THE CURSOR <dvb 19sep88>
SHOWIT CLR.B CRSRNEW ; RESET THE CURSOR CHANGED FLAG
CLR.B CRSROBSCURE ; it's no longer obscured
BSR DRAWCURSOR ; AND SHOW CURSOR IN NEW POSITION <dvb 19sep88>
CRSRDONE ;AND RETURN
RTS
TrackDone
move.l MickeyBytes,a0 ; <10/7/86 SMH> get globals
MOVE.W #1,adbCount(A0) ; No hits
CLR.W Error(A0) ; No errors
RTS ; Goodbye
NoComp move.l MickeyBytes,a0 ; <10/7/86 SMH> get globals
MOVE.W #1,adbCount(A0) ; No hits
CLR.W Error(A0) ; No errors
BRA.S NotCup ; Update the cursor
; --------end of ugly jcrsrcoreTask
ScrnPin CMP LEFT(A0),D0 ;less than left?
BGE.S LEFTOK ;if not, no problem
BSR.S FindScreen ;=>look for new screen
MOVE LEFT(A0),D0 ;pin to the left
LEFTOK CMP RIGHT(A0),D0 ;greater than right?
BLT.S RIGHTOK ;if not, no problem WAS BLE!! <05Apr85>
BSR.S FindScreen ;=>look for new screen
MOVE RIGHT(A0),D0 ;pin to the right
SUBQ #1,D0 ;really want one less
RIGHTOK SWAP D0 ;consider y
CMP TOP(A0),D0 ;less than top?
BGE.S TOPOK ;if not, no problem
SWAP D0
BSR.S FindScreen ;=>look for new screen
SWAP D0
MOVE TOP(A0),D0 ;pin to the top
TOPOK CMP BOTTOM(A0),D0 ;greater than bottom?
BLT.S BOTOK ;if not, no problem WAS BLE!! <05Apr85>
SWAP D0
BSR.S FindScreen ;=>look for new screen
SWAP D0
MOVE BOTTOM(A0),D0 ;pin to the bottom
SUBQ #1,D0 ;really want one less
BOTOK SWAP D0
RTS ;and return
; Check to see if cursor has moved to another screen.
; If not, returns with D0 unchanged.
; If so, hides the cursor, updates cursor globals and does messy return.
;
; Clobbers D1-D3/A0-A3 which are preserved by interrupt handler
FindScreen MOVE D0,D3 ;pt.h in D3
MOVE.L D0,D1 ;pt.v in D1
SWAP D1 ;pt.v in D1
MOVE.L DeviceList,D2 ;get the first GDevice
BMI.S NoDev ;=>just in case no GDevice
DoDev MOVE.L D2,A3 ;get device handle
MOVE.L (A3),A3 ;get device pointer
TST GDFlags(A3) ;is screen active?
BPL.S NxtDev ;=>no, try next device
LEA GDRect(A3),A1 ;point to rect
CMP (A1)+,D1 ;above top?
BLT.S NxtDev ;=>yes, check next device
CMP (A1)+,D3 ;to left of screen?
BLT.S NxtDev ;=>yes, check next device
CMP (A1)+,D1 ;to bottom of screen?
BGE.S NxtDev ;=>yes, check next device
CMP (A1)+,D3 ;to right of screen?
BLT.S GotDev ;=>no, cursor is on this screen
NxtDev MOVE.L GDNextGD(A3),D2 ;get next device in chain
BNE.S DoDev ;=>there is one, check it
NoDev RTS ;else return and pin to current screen
; cursor has changed devices, update depth and rowbytes for current device
GotDev MOVE.L CRSRPTR,A0 ;get handle to cursor data
MOVE.L (A0),A0 ;get pointer to cursor data
MOVE.L CrsrDevice,A1 ;get handle to current device
MOVE.L (A1),A1 ;point to current device
MOVE CCDEPTH(A0),GDCCDEPTH(A1) ;copy depth
MOVE CCBYTES(A0),GDCCBYTES(A1) ;copy expanded rowbytes
; now get the data, depth and rowbytes for the new device
BSR ERASECURSOR ;else erase the cursor
@0 SWAP D3 ;get pt.h in high word
MOVE D1,D3 ;get pt.v in low word
SWAP D3 ;now get them in the right order
MOVE.L D3,MTEMP ;update real mouse location with ""
MOVE.L D3,RawMOUSE ;update cursor loc with clipped pt
MOVE.L D3,MOUSE ;update mouse position
MOVE.L D2,CrsrDevice ;set the current cursor device
MOVE.L A3,A1 ;get pointer to grafDevice
JSR SetCrsrData ;and set up low-memory stuff for cursor
MOVE GDREFNUM(A3),D0 ;get the refNum
NOT D0 ;refNum -> unitnum
ASL #2,D0 ;get offset in unitTable
MOVE.L UTableBase,A0 ;get the base of the unit table
MOVE.L (A0,D0),A3 ;A3 = handle to the DCE
MOVE.L (A3),A0 ;get pointer to the DCE
MOVEQ #0,D0 ;clear out D0
MOVE.B dCtlSlot(A0),D0 ;get the slot number
_ATTACHVBL ;attach vbl to this slot
ADDQ #8,SP ;strip 2 RTS's from stack
BRA SHOWIT ;=>and go display cursor on new screen
; This routine is used by the pinrect routine below and is also called directly
; by CrsrVBLTask above to save time
; A0 should be pinning rect and D0 is the point to be pinned
; Fixed to avoid discontinuity on right and bottom. <05Apr85>
PinGuts
CMP LEFT(A0),D0 ;less than left?
BGE.S @1 ;if not, no problem
MOVE LEFT(A0),D0 ;pin to the left
@1 CMP RIGHT(A0),D0 ;greater than right?
BLT.S @2 ;if not, no problem WAS BLE!! <05Apr85>
MOVE RIGHT(A0),D0 ;pin to the right
SUBQ #1,D0 ;really want one less
@2 SWAP D0 ;consider y
CMP TOP(A0),D0 ;less than top?
BGE.S @3 ;if not, no problem
MOVE TOP(A0),D0 ;pin to the top
@3 CMP BOTTOM(A0),D0 ;greater than bottom?
BLT.S @4 ;if not, no problem WAS BLE!! <05Apr85>
MOVE BOTTOM(A0),D0 ;pin to the bottom
SUBQ #1,D0 ;really want one less
@4 SWAP D0
RTS
;
; Utility FUNCTION PinRect(theRect: Rect; thePt: Point): Point;
;
; given a rectangle and a point, pin the point inside the rectangle
;
PinRect
MOVE.L 4(SP),D0 ;get the point
MOVE.L 8(SP),A0 ;get the rect ptr
BSR.S PinGuts ; go pin it
MOVE.L (SP)+,A0 ;get return address
ADDQ #8,SP ;strip parameters
MOVE.L D0,(SP) ;return pinned pt as result
JMP (A0) ;return to caller
;_______________________________________________________________________ ;<dvb 19Sep88>
; ;<dvb 19Sep88>
; PROCEDURE CursorSect -- called by shieldcursor, showcursor ;<dvb 19Sep88>
; ;<dvb 19Sep88>
; Does a sectrect of CrsrRect and ShieldRect, all global-cošrd like. ;<dvb 19Sep88>
; CLEAR the z-flag if they DO intersect: BNE YesTheyIntersect.
; This code is was moved out of ShieldCursor. ;<dvb 19Sep88>
;
; Since CrsrRect is in local screen cošrds, and ShieldRect is in globals,
; the CrsrDevice's GDRect is used as an offset.
;_______________________________________________________________________ ;<dvb 19Sep88>
CursorSect MOVEM.L A0/A1/D0,-(SP) ;save the approprate regs <dvb 19Sep88>
TST ShieldDepth ;Any shielding?
BEQ.s @NoSect
LEA CrsrRect,A0 ;point to crsr rect ;<dvb 19Sep88>
MOVE.L CrsrDevice,A1 ;GET CURSOR DEVICE ;<dvb 19Sep88>
MOVE.L (A1),A1 ;POINT TO CURSOR DEVICE ;<dvb 19Sep88>
ADD #GDRECT,A1 ;POINT TO DEVICE'S RECT ;<dvb 19Sep88>
MOVE ShieldRect+Bottom,D0 ;GET SHIELD BOTTOM ;<dvb 19Sep88>
SUB TOP(A1),D0 ;CONVERT TO SCREEN LOCAL;<dvb 19Sep88>
CMP (A0)+,D0 ;IS SHIELDBOTTOM < SAVETOP ? ;<dvb 19Sep88>
BLT.S @NOSECT ;YES, NO INTERSECTION ;<dvb 19Sep88>
MOVE ShieldRect+Right,D0 ;GET SHIELD RIGHT <dvb 19Sep88>
SUB LEFT(A1),D0 ;CONVERT TO SCREEN LOCAL <dvb 19Sep88>
CMP (A0)+,D0 ;IS SHIELDRIGHT <= SAVELEFT ? <dvb 19Sep88>
BLE.S @NOSECT ;YES, NO INTERSECTION <dvb 19Sep88>
MOVE ShieldRect+Top,D0 ;GET SHIELD TOP <dvb 19Sep88>
SUB TOP(A1),D0 ;CONVERT TO SCREEN LOCAL <dvb 19Sep88>
CMP (A0)+,D0 ;IS SHIELDTOP >= SAVEBOTTOM ? <dvb 19Sep88>
BGE.S @NOSECT ;YES, NO INTERSECTION <dvb 19Sep88>
MOVE ShieldRect+Left,D0 ;GET SHIELD LEFT <dvb 19Sep88>
SUB LEFT(A1),D0 ;CONVERT TO SCREEN LOCAL <dvb 19Sep88>
CMP (A0),D0 ;IS SHIELDLEFT >= SAVERIGHT ? <dvb 19Sep88>
BGE.S @NOSECT ;YES, NO INTERSECTION <dvb 19Sep88>
@SECT MOVEQ #1,D0 ;Clear the Z-flag <dvb 19Sep88>
BRA.S @out ;<dvb 19Sep88>
@NOSECT CLR D0 ;Set the Z-flag <dvb 19Sep88>
@out MOVEM.L (SP)+,A0/A1/D0 ;Restore regs <dvb 19Sep88>
RTS ;bye.
;_______________________________________________________________________
;
; PROCEDURE ObscureCursor -- called via the jump table
;
; Removes the cursor from the screen without hiding it, so the next
; time the mouse moves, it will show up again.
;
;_______________________________________________________________________
ObscureCursor
MOVE.B #1,CrsrBusy ;"Occupado" <dvb 19sep88>
MOVE.B #1,CrsrObscure ;Mark it as obscure <dvb 19sep88>
BRA.S EraseCursor ;and erase it
;_______________________________________________________________________
;
; HIDECURSOR - is called from CrsrVBLTask, and via jump table.
;
; Subtracts 1 from crsrstate and hides the cursor if visible.
;
;
HideCursor
MOVE.B #1,CrsrBusy ;MARK CHANGE IN PROGRESS
SUB #1,CRSRSTATE ;CURSOR HIDDEN ONE DEEPER
;Fall into EraseCursor
;________________________________________________________________________
; <SM5> CSS Horror vectorized this vector. We are supporting this to be
; compatible with Horror.
; EraseCursor calls a vectorized version of the routine via lomem.
; EraseCursor is vectorized to gain access to low level cursor blit routines.
; (NOTE: Vector is initialized in StartInit.a to routine named VEraseCursor.)
; EraseCursor is much like HideCursor, but doesn't decrement the CrsrState <dvb 19sep88>
EraseCursor
move.l EraseCrsrVector,-(sp) ;<SM5> CSS
rts ;jump to the vectored routine <SM5> CSS
DoneHid CLR.B CRSRBUSY ;CHANGE COMPLETE
RTS
;_______________________________________________________________________
;
; PROCEDURE InitCursor;
;
; Definitely redisplay the cursor, independent of previous calls to
; HideCursor, ShieldCursor and ObscureCursor. It falls into showCursor.
;
InitCursor
MOVE.B #1,CrsrBusy ;mark it busy
CLR.B CrsrObscure ;we wont be obscure no more
CLR CrsrState ;reset state to 0
CLR ShieldDepth
;
; fall into ShowCursor
;
;_______________________________________________________________________
;
; SHOWCURSOR - Called from CrsrVBLTask and via Jump Table.
;
; Adds 1 to CRSRSTATE and paints cursor if zero and cursor is
; not already visible.
;
;Êthis reflects the fix from QDciPatchROM.a where obscure/show/hide left <sm 6/9/92>stb
; the cursor hidden only, and obscure/hide/show left the cursor obscured only. <sm 6/9/92>stb
ShowCursor
MOVE.B #1,CRSRBUSY ;MARK CHANGE IN PROGRESS
TST ShieldDepth ;Any shielding?
BEQ.s @2
@1 SUBQ #1,ShieldDepth ;If so, this ShowCursor unshields,
BRA.s DrawCursor ;but doesn't up the cursor level.
@2 ADDQ #1,CRSRSTATE ;CURSOR HIDDEN ONE LESS DEEP
bmi.s DoneSho
beq.s DrawCursor ;<KON 25JUN90>
clr.b CrsrObscure ;unobscure cursor if level went past zero <KON 25JUN90>
;fall into DrawCursor
;________________________________________________________________________
; <SM5> CSS Horror vectorized this vector. We are supporting this to be
; compatible with Horror.
; DrawCursor calls a vectorized version of the routine via lomem.
; DrawCursor is vectorized to gain access to low level cursor blit routines.
; (NOTE: Vector is initialized in StartInit.a to routine named VDrawCursor.)
; DrawCursor is much like ShowCursor, but doesn't increment the CrsrState <dvb 19sep88>
DrawCursor
move.l DrawCrsrVector,-(sp) ; <SM5> CSS
rts ;jump to the vectored routine <SM5> CSS
DoneSho CLR.B CRSRBUSY ;CHANGE COMPLETE
RTS
;_______________________________________________________________________
;
; CURSHIELD - Called via Jump Table
;
; PROCEDURE ShieldCursor(left,top,right,bottom: INTEGER);
;
; Subtracts 1 from CRSRSTATE, hides cursor only if it intersects SHIELDRECT.
; left,top,right bottom is the shieldRect in global coordinates
;
; ALL REGISTERS RESTORED.
;
ShieldVars RECORD {return},DECREMENT ;<dvb 19Sep99>
ShieldLeft DS.W 1 ;<dvb 19Sep99>
ShieldTop DS.W 1 ;<dvb 19Sep99>
ShieldRight DS.W 1 ;<dvb 19Sep99>
ShieldBot DS.W 1 ;<dvb 19Sep99>
return DS.L 1 ;<dvb 19Sep99>
ENDR
WITH ShieldVars
ShieldCursor
TST ShieldDepth ;Any shielding already? ;<dvb 19Sep88>
BEQ.s @2 ;No=>don't unionrect
MOVEM.L D0/A0,-(SP) ;Save some regs (and +8 our vars below*)
LEA ShieldRect+right,A0 ;A0->ShieldRect.right
MOVE.L ShieldBot+8(SP),D0 ;D0 = New shield bot,right (*)
CMP (A0),D0 ;Compare to ShieldRect.right
BLE.s @u1 ;Is the new right bigger?
MOVE D0,(A0)
@u1 SWAP D0 ;D0 = New shield bottom
CMP -(A0),D0 ;Compare to ShieldRect.bottom
BLE.s @u2 ;Is the new bottom bigger?
MOVE D0,(A0) ;If so, replace with it.
@u2 MOVE.L ShieldTop+8(SP),D0 ;D0 = New shield top,left (*)
CMP -(A0),D0 ;Compare to ShieldRect.left
BGE.s @u3 ;Is the new left smaller?
MOVE D0,(A0)
@u3 SWAP D0 ;D0 = New shield top
CMP -(A0),D0 ;Compare to ShieldRect.top
BGE.s @u4 ;Is the new top smaller?
MOVE D0,(A0)
@u4 MOVEM.L (SP)+,D0/A0
BRA.s @3
@2 MOVE.L ShieldBot(SP),ShieldRect+botRight ;save shieldrect ;<dvb 19Sep88>
MOVE.L ShieldTop(SP),ShieldRect+topLeft ;<dvb 19Sep88>
@3 ADDQ #1,ShieldDepth ;Shielding officially on
MOVE.B #1,CrsrBusy
BSR CursorSect ;<dvb 19Sep88>
BEQ.s @1 ;<dvb 19Sep88>
BSR EraseCursor ;IT DOES INTERSECT, REMOVE IT
@1 CLR.B CrsrBusy
MOVE.L (SP)+,(SP) ;STRIP 8 bytes of PARAMETERS, MOVING
MOVE.L (SP)+,(SP) ;RETURN ADDR UP ON STACK
RTS
ENDWITH
IMPORT CopyHandle,PatConvert
;_______________________________________________________________________
;
; PROCEDURE SetCCursor(cCrsr: CCrsrHandle);
;
; This procedure copies the data in the specified color cursor into the
; system's cursor save area. If the depth > 2, it expands it.
; this routine was taken from QDciPatchROM.a because A2 was getting trashed <sm 6/9/92>stb
; when setting CCursor on multiple device systems <sm 6/9/92>stb
SetCCursor MOVEM.L D3-D4/A2-A4,-(SP) ;save work registers
move.l 24(sp),a2 ;get ccrsrHandle <BAL 21Jun88>
move.l a2,a0 ;make a copy
_HGetState
move d0,-(sp) ;save state for later
move.l a2,a0 ;make a copy
_HLock
MOVE.L (a2),A2 ;GET POINTER TO NEW CURSOR
MOVE.L ([CRSRPTR]),A3 ;point to current cursor (LOCKED)
MOVE.L crsrID(A2),D0 ;and get ID of new cursor
CMP #CCrsrPat,ccType(A3) ;is current cursor a color cursor?
BNE.S NotCC ;=>no, it has definitely changed
CMP.L ccID(A3),D0 ;same as current one?
BEQ SCCDONE ;=>yes, just return
NotCC MOVE.B #1,CRSRBUSY ;flag the cursor as busy
MOVE.L D0,ccID(A3) ;set new ID
LEA crsr1Data(A2),A0 ;point to old-cursor data
LEA THECRSR,A1 ;put it here
MOVEQ #16,D0 ;data+mask+hotspot = 17 longs
@0 MOVE.L (A0)+,(A1)+ ;copy data
DBRA D0,@0 ;until done
LEA crsr1Data(A2),A0 ;point to old-cursor data
LEA CCLASTCRSR(A3),A1 ;save here to indicate cursor changed
MOVEQ #7,D0 ;move 8 longs
@1 MOVE.L (A0)+,(A1)+ ;copy data
DBRA D0,@1 ;=>loop until done
MOVE crsrType(A2),ccType(A3) ;copy the type
; NOTE: ALL THE DST HANDLES ARE LOCKED, BUT THEY HAVE BEEN SET TO THE PROPER SIZE
MOVE.L crsrMap(A2),-(SP) ;push src pixMap handle
MOVE.L ccMap(A3),-(SP) ;push dst pixMap handle
_CopyPixMap ;copy the pixMap
MOVE.L crsrData(A2),-(SP) ;push src data handle
MOVE.L ccData(A3),-(SP) ;push dst data handle
_CopyHandle ;copy the cursor data
; FOR EACH ACTIVE SCREEN DEVICE, EXPAND CURSOR, IF NECESSARY
MOVE.L DEVICELIST,D4 ;D4 = CURRENT DEVICE
MOVE.L D4,A4 ;GET HANDLE TO CURRENT DEVICE
NXTSCR MOVE.L (A4),A4 ;A4 = POINTER TO CURRENT DEVICE
TST.W GDFLAGS(A4) ;IS THE DEVICE ACTIVE?
BPL CHKNXT ;=>NO, CHECK NEXT DEVICE
;ACTIVE DEVICES ARE LOCKED DOWN
MOVE.L GDPMAP(A4),A0 ;GET HANDLE TO DEVICE'S PIXMAP
MOVE.L (A0),A0 ;POINT TO DEVICE'S PIXMAP
MOVE PIXELSIZE(A0),D3 ;GET DEVICE'S PIXELSIZE
; IF THE PATTERN IS PRE-EXPANDED TO THE RIGHT DEPTH, JUST COPY THAT DATA
CLR GDCCDEPTH(A4) ;flag to expand one-bit data
MOVE CRSRXVALID(A2),D0 ;is there pre-expanded data?
BEQ.S GOEXP ;=>no, do expansion
CMP D3,D0 ;is the expanded data the right depth?
BNE.S GOEXP ;=>no, expand from the source
MOVE D0,GDCCDEPTH(A4) ;else copy the expanded depth
MOVE.L crsrXData(A2),-(SP) ;push the src xdata handle
MOVE.L CCXDATA(A3),-(SP) ;push the dst xdata handle
_CopyHandle ;and copy it
BRA.S CHKNXT ;=>data already expanded, just exit
GOEXP CMP #CCRSRPAT,CCTYPE(A3) ;IS IT A COLOR CURSOR?
BNE.S DONEONE ;=>NO, EXIT WITH DEPTH = 0
CMP #2,D3 ;IS DEPTH GREATER THAN 2?
BLE.S DONEONE ;=>NO, EXIT WITH DEPTH = 0
MOVE D3,GDCCDEPTH(A4) ;RECORD THE EXPANDED DEPTH
MOVE.L GDCCXDATA(A4),CCXDATA(A3) ;GET DEVICE'S EXPANDED DATA FOR PATCONVERT
MOVE.L THEGDEVICE,-(SP) ;SAVE GRAFDEVICE (USED BY PATCONVERT)
MOVE.L D4,THEGDEVICE ;SET IT TO CURRENT DEVICE
MOVE.L CRSRPTR,-(SP) ;PUSH HANDLE TO CURSOR (LOCKED)
_PATCONVERT ;AND EXPAND TO CURRENT DEPTH
MOVE.L (SP)+,THEGDEVICE ;RESTORE GRAFDEVICE
; EXPAND THE MASK TO THE CURRENT DEPTH
MOVE D3,D0 ;GET DEPTH
MOVEQ #0,D1 ;DEFAULT SHIFT = 0
NXTSHFT1 LSR #1,D0 ;CHECK NEXT DEPTH BIT
BCS.S GOTSHFT1 ;=>GOT SHIFT
ADDQ #1,D1 ;ELSE ADD ONE TO SHIFT
BRA.S NXTSHFT1 ;LOOP UNTIL WE HIT A ONE
GOTSHFT1 LEA THECRSR+MASK,A0 ;SRC = CURSOR MASK
MOVE.L ([GDCCXMASK,A4]),A1 ;POINT TO EXPANDED MASK (LOCKED)
move.l a2,d4 ;save pointer to new cursor <25APR91 KON>
MOVE.L A1,A2 ;GET START OF DST BUFFER <27May87 EHB>
MOVE #32,D0 ;GET #BYTES OF SOURCE <27May87 EHB>
LSL D1,D0 ;MULTIPLY BY DEPTH <27May87 EHB>
ADD D0,A2 ;POINT TO END OF BUFFER <27May87 EHB>
move.l ExTblPtr,A3 ;POINT TO ROUTINE TABLE
add.l 0(A3,D1*4),A3 ;USE DEPTH TO SELECT ROUTINE
MOVEQ #0,D0 ;CLEAR HIGH PART OF D0
JSR (A3) ;EXPAND 32*DEPTH BYTES
MOVE.L ([CRSRPTR]),A3 ;GET BACK POINTER TO CURSOR (LOCKED)
move.l d4,a2 ;restore pointer to new cursor <25APR91 KON>
DONEONE MOVE GDCCDEPTH(A4),D0 ;GET EXPANDED DEPTH
ADD D0,D0 ;DOUBLE IT
MOVE D0,GDCCBYTES(A4) ;AND SAVE AS CURSOR'S ROWBYTES
CHKNXT MOVE.L GDNEXTGD(A4),D4 ;IS THERE A NEXT DEVICE?
MOVE.L D4,A4 ;GET HANDLE TO NEXT DEVICE
BNE NXTSCR ;=>THERE IS ONE, PREPARE ITS CURSOR
BSR.S GETMAINCRSR ;RESTORE EXPAND DATA FOR MAIN CURSOR
BSR ERASECURSOR ;HIDE THE OLD CURSOR
BSR DRAWCURSOR ;DISPLAY THE NEW CURSOR
SCCDONE CLR.B CRSRBUSY ;CURSOR NOT BUSY ANYMORE
move (sp)+,d0 ;get ccrsrhandle state
move.l 24(sp),a0 ;get ccrsrHandle
_HSetState
MOVEM.L (SP)+,D3-D4/A2-A4 ;restore work registers
MOVE.L (SP)+,(SP) ;strip parameter
RTS ;and return
;_______________________________________________________________________
GETMAINCRSR MOVE.L CRSRDEVICE,A0 ;GET HANDLE TO CURSOR DEVICE
MOVE.L (A0),A0 ;GET POINTER TO CURSOR DEVICE
MOVE.L CRSRPTR,A1 ;GET HANDLE TO CURSOR SAVE AREA
MOVE.L (A1),A1 ;GET POINTER TO CURSOR SAVE
MOVE.L GDCCXDATA(A0),CCXDATA(A1) ;GET CURRENT EXPANDED DATA
MOVE.L GDCCXMASK(A0),CCXMASK(A1) ;GET CURRENT EXPANDED MASK
MOVE GDCCDEPTH(A0),CCDEPTH(A1) ;GET EXPANDED DEPTH
MOVE GDCCBYTES(A0),CCBYTES(A1) ;GET EXPANDED ROWBYTES
RTS ;AND RETURN
;_______________________________________________________________________
;
; PROCEDURE SetCursor(hotSpot: Point; height: INTEGER; data: Ptr; mask:Ptr);
;
; This procedure sets THECRSR pointer in the system global area.
; A reasonable hotSpot is ENFORCED! Also fix bug to note changed when only hotspot does. <05Apr85>
;
; WARNING: to save code, this routine really doesn't use the above interface.
; It ignores the height and mask parameters. It assumes that the mask immediately
; follows the data (as it does when called from LisaGraf)
;
SetCursor MOVE.L ([CRSRPTR]),A0 ;point to crsr data structure (LOCKED)
move.b #1,crsrBusy ;don't allow vbl drawing until we're done <09Aug88>
MOVE #oldCrsrPat,ccType(A0) ;say that it's an old cursor
MOVE.L 8(SP),A0 ;get address of data mask
LEA THECRSR,A1 ;point to system cursor buffer
MOVEQ #15,D2 ;have 16 longs to move
MOVEQ #0,D1 ;flag that its not different
SetCurLoop MOVE.L (A0)+,D0 ;get next longWord of new cursor
CMP.L (A1),D0 ;is it the same as what's there
BEQ.S @1 ;if so, skip
ADDQ #1,D1 ;flag that its different
@1 MOVE.L D0,(A1)+ ;move it into the cursor buffer
DBRA D2,SetCurLoop ;move all 64 bytes
MOVE.L 14(SP),D0 ;get the alleged hotspot <23Apr85>
; Clean up the two coordinates to lie between 0 and 16. <23Apr85>
MOVEQ #16,D2 ; VERY handy temp, from loop above <23Apr85>
CMP.W D2,D0 ; <23Apr85>
BLS.S @31 ; D0 LowerorSame as 16 is ok <23Apr85>
MOVE.W D2,D0 ;pin it at 16 <23Apr85>
@31 SWAP D0 ;align the high-order coord <23Apr85>
CMP.W D2,D0 ; <23Apr85>
BLS.S @33 ; D0 LowerorSame as 16 is ok <23Apr85>
MOVE.W D2,D0 ; <23Apr85>
@33 SWAP D0 ;realign coords <23Apr85>
CMP.L TheCrsr+HotSpot,D0 ;is it new? <05Apr85>
BEQ.S @3 ; <05Apr85>
ADDQ #1,D1 ;flag it's different <05Apr85>
MOVE.L D0,TheCrsr+HotSpot ;move in the hotSpot <05Apr85>
@3
; DID THE CURSOR CHANGE?
clr.b crsrBusy ;re-allow vbl drawing <09Aug88>
TST D1 ;did it change?
BEQ.S @6 ;skip if it didn't
; IF SO, FORCE THE CURSOR TO BE REDISPLAYED BY HIDING AND THEN SHOWING IT
BSR EraseCursor ;hide it
BSR DrawCursor ;then show it again to redraw it
@6 MOVE.L (SP)+,A0 ;get return address
ADD #14,SP ;strip parameters
JMP (A0) ;return to caller
SetCrsrData PROC EXPORT
;------------------------------------------------
; UTILITY SetCrsrData
;
; This routine is called to initialize low-memory locations
; to the necessary values for the grafDevice pointer in A1.
;
IMPORT SetCrsrDelay ;<SM5> CSS
bsr.l SetCrsrDelay ;<SM5> CSS
MOVE.L CRSRPTR,A0 ;get handle to cursor data
MOVE.L (A0),A0 ;get pointer to cursor data
; initialize the grafDevice's cursor variables
MOVE.L GDCCXDATA(A1),CCXDATA(A0) ;copy handle to expanded data
MOVE.L GDCCXMASK(A1),CCXMASK(A0) ;copy handle to expanded mask
MOVE GDCCDEPTH(A1),CCDEPTH(A0) ;copy depth
MOVE GDCCBYTES(A1),CCBYTES(A0) ;copy expanded rowbytes
; set the pinning rectangle to the current screen
LEA GDRect(A1),A0 ;get rect for current device
MOVE.L (A0)+,crsrPin ;and set pinning rectangle
MOVE.L (A0),crsrPin+4 ;from device's rectangle
; set the depth, rowbytes, height, and width of the current screen
MOVE.L GDPMap(A1),A0 ;get pixMap of current device
MOVE.L (A0),A0 ;point at pixmap
MOVE PixelSize(A0),chunkyDepth ;set depth of cursor's screen
MOVE.L (A0)+,crsrBase ;update base address for cursor
MOVE (A0)+,D0 ;get rowbytes
AND #nuRBMask,D0 ;clear flag bits
MOVE D0,crsrRow ;set cursor rowbytes
MOVE bottom(A0),D0 ;get bottom of cursor's screen
SUB top(A0),D0 ;calc height of cursor's screen
MOVE D0,ColLines ;save height of cursor's screen
MOVE right(A0),D0 ;get right of cursor's screen
SUB left(A0),D0 ;calc width of cursor's screen
MOVE D0,RowBits ;save width of cursor's screen
RTS
ALLOCCRSR PROC EXPORT
IMPORT PatConvert,GETMAINCRSR,SetCrsrData
IMPORT RNEWHANDLE,ERASECURSOR,DRAWCURSOR
;--------------------------------------------------
;
; PROCEDURE AllocCrsr;
;
; Allocates all global cursor data structures. A maximum depth of 8 is assumed.
;
; CRSRPTR IS USED AS A HANDLE TO AN EXTENDED PATTERN WHICH CONTAINS THESE FIELDS:
;
; CCTYPE EQU 0 ;[WORD] CURSOR TYPE
; CCMAP EQU CCTYPE+2 ;[LONG] HANDLE TO CURSOR'S PIXMAP
; CCDATA EQU CCMAP+4 ;[LONG] HANDLE TO CURSOR'S COLOR DATA
; CCXDATA EQU CCDATA+4 ;[LONG] HANDLE TO EXPANDED DATA
; CCXMASK EQU CCXDATA+4 ;[LONG] HANDLE TO EXPANDED MASK
; CCSAVE EQU CCXMASK+4 ;[LONG] HANDLE TO SAVE BITS UNDER CURSOR
; CCLASTCRSR EQU CCSAVE+4 ;[32 BYTES] DATA FOR LAST B/W CURSOR DRAWN
; CCID EQU CCLASTCRSR ;[LONG] ID FOR LAST COLOR CURSOR DRAWN
; CCTABLE EQU CCID+4 ;[LONG] TABLE ID FOR LAST COLOR CURSOR
; CCDEPTH EQU CCLASTCRSR+32 ;[WORD] DEPTH FOR LAST CURSOR DRAWN
; CCSTATEREGS EQU CCDEPTH+2 ;[20 BYTES] STATE INFO OF SAVED DATA
; CCBYTES EQU CCSTATEREGS+16 ;[WORD] ROWBYTES OF EXPANDED DATA
; CCMAXDEPTH EQU CCBYTES+2 ;[WORD] MAXIMUM CURSOR DEPTH
MOVEM.L D0-D6/A0-A4/A6,-(SP) ;PRESERVE ALL REGS
MOVE.L THEZONE,-(SP) ;SAVE THE CURRENT HEAP ZONE
MOVE.L SYSZONE,THEZONE ;SET CURRENT ZONE TO SYS ZONE
; ALLOCATE MAIN CURSOR STRUCTURE AND DATA AREAS IF NECESSARY
BSR ERASECURSOR ;HIDE THE CURSOR
MOVE.B #1,CRSRBUSY ;MARK CHANGE IN PROGRESS
MOVE.L CRSRPTR,D0 ;GET CRSRPTR (REALLY HANDLE)
CMP.L MINUSONE,D0 ;IS IT ALLOCATED?
BNE.S MAINOK ;=>ALREADY ALLOCATED, CONTINUE
; RESERVE MEMORY FOR AND ALLOCATE CURSOR STRUCTURE.
; THE CURSOR SAVE RECORD CONTAINS A PIXMAP, A DATA HANDLE, AND A SAVE HANDLE.
clr.b CrsrObscure ;we wont be obscure no more
clr CrsrState ;reset state to 0
clr ShieldDepth ;no more shielding
MOVEQ #CCSAVEREC,D1 ;GET SIZE OF CURSOR SAVE RECORD
BSR GETLOWHANDLE ;ALLOCATE RECORD DOWN LOW AND LOCK
MOVE.L A0,CRSRPTR ;SAVE HANDLE TO CURSOR
MOVE.L (A0),A4 ;KEEP POINTER IN A4
MOVEQ #PMREC,D0 ;WE'RE GOING TO LOCK THIS
_RESRVMEM ;SO RESERVE SPACE DOWN LOW
CLR.L -(SP) ;MAKE ROOM FOR FUNCTION RESULT
_NEWPIXMAP ;ALLOCATE A PIXMAP
MOVE.L (SP)+,A0 ;GET HANDLE TO PIXMAP
MOVE.L A0,CCMAP(A4) ;SAVE PIXMAP IN CURSOR RECORD
_HLOCK ;LOCK IT DOWN
MOVEQ #2,D0 ;DEFAULT SIZE OF DATA HANDLE
JSR RNEWHANDLE ;ALLOCATE IT
MOVE.L A0,CCDATA(A4) ;AND SAVE FOR CURSOR DATA
; RESERVE AND ALLOCATE MEMORY IN WHICH TO SAVE THE BITS BEHIND THE CURSOR.
; MAGIC AMOUNT OF MEMORY RESERVED IS FOR 32 BIT DEEP, LONG ALIGNED CURSOR.
if cursorShadow then
MOVE.L #$400*4,D1 ;GET REQUIRED SIZE 32*32*4
else
MOVE.L #$400,D1 ;GET REQUIRED SIZE 16*16*4
endif
BSR GETLOWHANDLE ;GET LOW,LOCKED HANDLE
MOVE.L A0,CCSAVE(A4) ;SAVE INTO RECORD
; INITIALIZE THE CURSOR TO THE ARROW CURSOR.
MOVE #OLDCRSRPAT,CCTYPE(A4) ;SAY THAT IT'S AN OLD CURSOR
CLR CCDEPTH(A4) ;CLEAR DEPTH TO SAY NOT EXPANDED
MOVE.L GRAFGLOBALS(A5),A0 ;POINT TO GRAFGLOBALS
LEA ARROW(A0),A0 ;POINT TO ARROW CURSOR
LEA THECRSR,A1 ;PUT IT HERE
MOVEQ #16,D0 ;DATA+MASK+HOTSPOT = 17 LONGS
@2 MOVE.L (A0)+,(A1)+ ;COPY DATA
DBRA D0,@2 ;UNTIL DONE
; FOR EACH ACTIVE SCREEN DEVICE, ALLOCATE EXPANDED CURSOR MEMORY IF NECESSARY
; ALL DEVICES ARE GUARANTEED TO BE LOCKED.
MAINOK MOVE.L CRSRPTR,A4 ;GET HANDLE TO CURSOR STUFF
MOVE.L (A4),A4 ;GET POINTER (LOCKED)
MOVE.L DEVICELIST,D4 ;D4 = CURRENT DEVICE
MOVE.L D4,A6 ;GET HANDLE TO CURRENT DEVICE
NXTDEVICE MOVE.L (A6),A6 ;A6 = POINTER TO CURRENT DEVICE
TST.W GDFLAGS(A6) ;IS THE DEVICE ACTIVE?
BPL CHKNEXT ;=>NO, CHECK NEXT DEVICE
TST GDCCDEPTH(A6) ;HAS MEMORY BEEN ALLOCATED?
BNE.S DOEXPAND ;=>YES, EXPAND CURSOR IF NECESSARY
MOVE.L GDCCXDATA(A6),A0 ;GET HANDLE TO EXPANDED DATA
_DISPOSHANDLE ;DISPOSE THE CURRENT HANDLE
MOVE.L #$400,D1 ;GET SIZE OF EXPANDED HANDLE @@@@ used to be $100
BSR GETLOWHANDLE ;GET A LOW, LOCKED HANDLE
MOVE.L A0,GDCCXDATA(A6) ;AND SAVE IT
MOVE.L GDCCXMASK(A6),A0 ;GET HANDLE TO EXPANDED DATA
_DISPOSHANDLE ;DISPOSE THE CURRENT HANDLE
BSR GETLOWHANDLE ;GET A LOW, LOCKED HANDLE
MOVE.L A0,GDCCXMASK(A6) ;AND SAVE IT
DOEXPAND
; MAKE SURE ALL THE HANDLES ARE THE RIGHT SIZE FOR THE CURRENT DEPTH.
; IF COLOR CURSOR AND DEPTH IS > 2 BITS PER PIXEL, THEN EXPAND TO CURRENT DEPTH.
; BLACK AND WHITE (AND 2 BIT) CURSORS ARE EXPANDED BY SHOWCURSOR.
MOVE.L GDPMAP(A6),A0 ;GET HANDLE TO DEVICE'S PIXMAP
MOVE.L (A0),A0 ;POINT TO DEVICE'S PIXMAP
MOVE PIXELSIZE(A0),D3 ;GET DEVICE'S PIXELSIZE
CMP GDCCDEPTH(A6),D3 ;HAS DEPTH CHANGED?
BEQ.S CHKNEXT ;=>NO, THIS DEVICE IS OK
; CONVERT DEPTH TO SHIFT AMOUNT IN D6
MOVE D3,D0 ;GET DEPTH
MOVEQ #0,D6 ;DEFAULT SHIFT = 0
NXTSHFT LSR #1,D0 ;CHECK NEXT DEPTH BIT
BCS.S GOTSHFT ;=>GOT SHIFT
ADDQ #1,D6 ;ELSE ADD ONE TO SHIFT
BRA.S NXTSHFT ;LOOP UNTIL WE HIT A ONE
GOTSHFT CMP #CCRSRPAT,CCTYPE(A4) ;IS IT A COLOR CURSOR?
BNE.S CHKNEXT ;=>NO
CMP #2,D3 ;IS DEPTH GREATER THAN 2?
BLE.S CHKNEXT ;=>NO
MOVE.L GDCCXDATA(A6),CCXDATA(A4) ;GET EXPAND HANDLE FOR PATCONVERT
MOVE.L THEGDEVICE,-(SP) ;SAVE GRAFDEVICE
MOVE.L D4,THEGDEVICE ;SET IT TO CURRENT DEVICE
MOVE.L CRSRPTR,-(SP) ;PUSH HANDLE TO CURSOR
_PATCONVERT ;AND EXPAND TO CURRENT DEPTH
MOVE.L (SP)+,THEGDEVICE ;RESTORE GRAFDEVICE
; EXPAND THE MASK TO THE CURRENT DEPTH
LEA THECRSR+MASK,A0 ;SRC = CURSOR MASK
MOVE.L ([GDCCXMASK,A6]),A1 ;POINT TO EXPANDED MASK (LOCKED)
MOVE.L A1,A2 ;GET START OF DST BUFFER
MOVE #32,D0 ;GET #BYTES OF SOURCE
LSL D6,D0 ;MULTIPLY BY DEPTH
ADD D0,A2 ;POINT TO END OF BUFFER
move.l ExTblPtr,A3 ;POINT TO ROUTINE TABLE
add.l 0(A3,D6*4),A3 ;USE DEPTH TO SELECT ROUTINE
MOVEQ #0,D0 ;CLEAR HIGH PART OF D0
JSR (A3) ;EXPAND 32*DEPTH BYTES
MOVE D3,GDCCDEPTH(A6) ;SAVE DEPTH OF EXPANDED CURSOR
ADD D3,D3 ;GET 2*DEPTH
MOVE D3,GDCCBYTES(A6) ;SAVE ROWBYTES FOR EXPANDED CURSOR
CHKNEXT MOVE.L GDNEXTGD(A6),D4 ;IS THERE A NEXT DEVICE?
MOVE.L D4,A6 ;GET HANDLE TO NEXT DEVICE
BNE NXTDEVICE ;=>THERE IS ONE, PREPARE ITS CURSOR
BSR GETMAINCRSR ;SET UP FIELDS FOR MAIN CURSOR
MOVE.L CRSRDEVICE,A1 ;GET HANDLE TO CURSOR DEVICE
MOVE.L (A1),A1 ;GET POINTER TO CURSOR DEVICE
JSR SetCrsrData ;AND SET UP LOW-MEM FOR THIS DEVICE
MOVE.L (SP)+,THEZONE ;RESTORE THE ZONE
CLR.B CRSRBUSY ;CHANGE COMPLETE
BSR DRAWCURSOR
MOVEM.L (SP)+,D0-D6/A0-A4/A6 ;RESTORE ALL REGS
RTS
GETLOWHANDLE
;--------------------------------------------------
; UTILITY GETLOWHANDLE
;
; THIS ROUTINE RESERVES MEMORY FOR A HANDLE, ALLOCATES THE HANDLE
; AND THEN LOCKS IT DOWN. THE DESIRED SIZE IS IN D1. THE RETURNED HANDLE IS IN A0
; ONLY D0 IS TRASHED
MOVE.L D1,D0 ;GET THE DESIRED SIZE
_RESRVMEM ;RESERVE SPACE FOR THE HANDLE DOWN LOW
BNE.S MEMFULL ;=>ON ERROR, JUST BOMB
MOVE.L D1,D0 ;GET THE DESIRED SIZE
_NEWHANDLE ,CLEAR ;ALLOCATE THE HANDLE
_HLOCK ;LOCK IT
RTS ;AND RETURN
MEMFULL MOVEQ #25,D0 ;MEM FULL ERROR
_SYSERROR ;FLAG IT
DC.W $A9FF ;JUST IN CASE WE RETURN
;_______________________________________________________________________
;
; BLITCURSOR <dvb 19sep88>
;
; The only thing that will stop this routine from blitting the cursor
; to the screen is ShieldRect. Since the new CrsrRect isn't known
; until pretty far through the process, it's checked here, not
; DrawCursor. CrsrState and CrsrObscure are _not_ checked here.
; It seems likely that patching this routine will have use on accelerator
; cards etc.
BLITCURSOR PROC EXPORT
IMPORT CursorSect, SHFTTBL
TST.L CRSRPTR ;CURSOR ALLOCATED?
BMI NoBlit ;=>NO, JUST RETURN
MOVEM.L D0-D7/A0-A6,-(SP) ;SAVE REGISTERS
LEA THECRSR+DATA,A2 ;POINT TO THE CURSOR
;-----------------------------------------------
;
; CONVERT CHUNKY DEPTH TO SHIFT AMOUNT IN D7
;
LEA SHFTTBL,A0 ;TO CONVERT DEPTH TO SHIFT
MOVE CHUNKYDEPTH,D1 ;GET DEPTH
MOVEQ #0,D7 ;DEFAULT SHIFT = 0
MOVE.B 0(A0,D1),D7 ;GET SHIFT AMOUNT IN D7
;-----------------------------------------------
;
; CHECK THE CURSOR TO SEE IF IT HAS CHANGED
; OLD CURSORS: CHECK CURSOR DATA AND DEPTH
; NEW CURSORS: CHECK DEPTH
;
GOTSHFT MOVE.L ([CRSRPTR]),A4 ;GET POINTER TO CURSOR DATA (LOCKED)
CMP #CCRSRPAT,CCTYPE(A4) ;IS IT A COLOR CURSOR?
BNE.S OLDCUR ;=>NO, JUST AN OLD ONE
CMP CCDEPTH(A4),D1 ;HAS DEPTH CHANGED?
BEQ NOEXPAND ;=>NO, DON'T EXPAND
CMP #2,D1 ;IS DEPTH 2 or 1?
BGT EXPMASK ;=>NO, JUST EXPAND MASK
BRA.S CPYDATA ;=>ELSE JUST COPY DATA
OLDCUR LEA CCLASTCRSR(A4),A0 ;POINT TO SAVED DATA
MOVE.L A2,A1 ;GET POINTER TO CURSOR
MOVEQ #7,D0 ;CHECK 8 LONGS
@0 CMP.L (A0)+,(A1)+ ;ARE THEY THE SAME?
BNE.S GOEXPAND ;=>NO, EXPAND IT
DBRA D0,@0 ;=>LOOP UNTIL DONE
CMP CCDEPTH(A4),D1 ;HAS DEPTH CHANGED?
BEQ NOEXPAND ;=>NO, DON'T EXPAND
GOEXPAND
;-----------------------------------------------
;
; INVALIDATE EXPANDED DATA FOR EACH DEVICE BY CLEARING DEPTH
; THIS MUST BE DONE SO THAT ALL EXPANDED CURSOR IMAGES ARE RENDERED INVALID AFTER
; AN OLD CURSOR HAS BEEN SET. IF THE CURSOR IS NEW, SETCCURSOR ALREADY DID THIS.
MOVE.L DEVICELIST,A0 ;GET FIRST HANDLE IN DEVICE LIST
NXTGD MOVE.L (A0),A0 ;POINT TO FIRST DEVICE
TST GDFLAGS(A0) ;IS IT ACTIVE?
BPL.S NOTACT ;=>NO, SKIP TO NEXT
CLR GDCCDEPTH(A0) ;ELSE INVALIDATE EXPANDED DATA
NOTACT MOVE.L GDNEXTGD(A0),D0 ;GET NEXT GRAFDEVICE
MOVE.L D0,A0 ;GET INTO A0
BNE.S NXTGD ;=>REPEAT FOR ALL DEVICES
; COPY THE CURSOR DATA TO IDENTIFY THIS CURSOR
CPYDATA LEA CCLASTCRSR(A4),A0 ;POINT TO SAVED DATA
MOVE.L A2,A1 ;GET CURSOR
MOVEQ #7,D0 ;MOVE 8 LONGS
@0 MOVE.L (A1)+,(A0)+ ;MOVE A LONG
DBRA D0,@0 ;=>LOOP UNTIL DONE
; UPDATE THE ROWBYTES AND DEPTH FOR THE EXPANDED DATA
; MOVE D1,(A0)+ ;COPY THE DEPTH TOO <this is the top half of ccID! <BAL 01Apr89>
MOVE D1,CCDEPTH(A4) ;SET DEPTH TO SAY IT'S EXPANDED
ADD D1,D1 ;DOUBLE FOR CURSOR'S ROWBYTES
MOVE D1,CCBYTES(A4) ;AND UPDATE ROWBYTES
;-----------------------------------------------
;
; EXPAND THE CURSOR TO THE CURRENT DEPTH
;
MOVE.L A2,A0 ;SRC = CURSOR
MOVE.L ([CCXDATA,A4]),A1 ;POINT TO EXPANDED DATA (LOCKED)
MOVE.L A1,A2 ;GET START OF DST BUFFER
MOVE #32,D5 ;GET #BYTES OF SOURCE
LSL D7,D5 ;MULTIPLY BY DEPTH
ADD D5,A2 ;POINT TO END OF BUFFER
move d7,d0
cmp #4,d0 ;16/32 bits per pixel? <BAL 28Jun88>
blt.s @1 ;no, don't hack depth conversion
addq #2,d0 ;get address of spiffy 1 to 15/24 bit expand
@1 move.l ExTblPtr,A3 ;POINT TO ROUTINE TABLE
add.l 0(A3,D0*4),A3 ;USE DEPTH TO SELECT ROUTINE
MOVEQ #0,D0 ;CLEAR HIGH PART OF D0
JSR (A3) ;EXPAND 32*DEPTH BYTES
;-----------------------------------------------
;
; EXPAND THE MASK TO THE CURRENT DEPTH
;
EXPMASK LEA THECRSR+MASK,A0 ;SRC = CURSOR MASK
MOVE.L ([CCXMASK,A4]),A1 ;POINT TO EXPANDED MASK (LOCKED)
MOVE.L A1,A2 ;GET START OF DST BUFFER
MOVE #32,D5 ;GET #BYTES OF SOURCE <BAL 14Jun88>
LSL D7,D5 ;MULTIPLY BY DEPTH <BAL 14Jun88>
ADD D5,A2 ;POINT TO END OF BUFFER
move.l ExTblPtr,A3 ;POINT TO ROUTINE TABLE
add.l 0(A3,D7*4),A3 ;USE DEPTH TO SELECT ROUTINE
MOVEQ #0,D0 ;CLEAR HIGH PART OF D0
JSR (A3) ;EXPAND 32*DEPTH BYTES
;-----------------------------------------------
;
; PREPARE TO BLT THE CURSOR ON THE SCREEN IN ANY DEPTH
; (SUBTITLE: WALTZ OF THE REGISTERS)
;
NOEXPAND
MOVE.L ([CCXDATA,A4]),d0 ;A2 = EXPANDED DATA FOR BLT (LOCKED)
_rTranslate24To32 ;strip off high byte
move.l d0,a2
MOVE.L ([CCXMASK,A4]),d0 ;A3 = EXPANDED MASK FOR BLT (LOCKED)
_rTranslate24To32 ;strip off high byte
move.l d0,a3
MOVEQ #16,D5 ;D5 = 16
;-----------------------------------------------
;
; CLIP THE CURSOR VERTICALLY AND GET THE TOP AND BOTTOM INTO D2 AND D3.
; IF THE TOP IS CLIPPED, UPDATE THE DATA BASE ADDRESSES IN A2 AND A3.
;
MOVE MOUSE+V,D2 ;MOUSE POSITION Y
SUB CRSRPIN+TOP,D2 ;CONVERT TO SCREEN LOCAL COORDS
SUB THECRSR+HOTSPOT+V,D2 ; - HOTSPOT = TOP EDGE
MOVE D2,D3 ;GET CURSOR BOTTOM
ADD D5,D3 ; = TOP + 16
CMP D5,D3 ;AT TOP?
BGE.S CHKBOT ;=>NOT AT TOP
NEG D2 ;GET NUMBER OF CLIPPED ROWS
CMP D5,D2 ;ARE ALL 16 CLIPPED?
BEQ SkipBlit ;=>IF SO, NOTHING TO SHOW
MULU CCBYTES(A4),D2 ; * ROWBYTES FOR OFFSET
ADD.L D2,A2 ;ADD VERTICAL OFFSET INTO CURSOR
ADD.L D2,A3 ;ADD VERTICAL OFFSET INTO MASK
MOVEQ #0,D2 ;AND PIN CURSOR TO TOP
CHKBOT MOVE COLLINES,D4 ;GET BOTTOM OF SCREEN
CMP D4,D3 ;PAST BOTTOM?
BLE.S CHKLFT ;=>NO, VERTICAL OK
MOVE D4,D3 ;ELSE PIN TO BOTTOM EDGE
;-----------------------------------------------
;
; CLIP THE CURSOR HORIZONTALLY AND GET THE LEFT AND RIGHT INTO D0 AND D1
; IF THE LEFT OF THE CURSOR IS CLIPPED, ADJUST THE OFFET IN D6.
CHKLFT MOVEQ #0,D6 ;INIT SRC/DST OFFSET TO 0
MOVE MOUSE+H,D0 ;MOUSE POSITION X
SUB CRSRPIN+LEFT,D0 ;CONVERT TO SCREEN LOCAL COORDS
SUB THECRSR+HOTSPOT+H,D0 ; - HOTSPOT = CURSOR LEFT
MOVE D0,D1 ;GET CURSOR RIGHT
ADD D5,D1 ; = LEFT + 16
CMP D5,D1 ;AT LEFT EDGE?
BGE.S CHKRT ;=>NOT AT LEFT EDGE
SUB D0,D6 ;OFFSET = AMOUNT CLIPPED
MOVEQ #0,D0 ;AND PIN TO LEFT EDGE
CHKRT MOVE ROWBITS,D4 ;GET RIGHT EDGE OF SCREEN
CMP D4,D1 ;PAST RIGHT EDGE?
BLE.S RTOK ;=>NO, HORIZONTAL OK
MOVE D4,D1 ;ELSE PIN TO RIGHT EDGE
RTOK
;-----------------------------------------------
;
; USE TOP AND LEFT TO CALCULATE THE LONG ALIGNED SCREEN BASE ADDRESS
MOVE.L CRSRBASE,A5 ;A5 = POINTER TO BASE OF SCREEN
MOVE CRSRROW,A0 ;A0 = SCREEN ROWBYTES
MOVE A0,D4 ;COPY FOR MULU
MULU D2,D4 ;TOP * ROWBYTES
ADD.L D4,A5 ;ADD VERT OFFSET INTO SCREEN
ext.l d0 ;make it a long <BAL 17Jan89>
LSL.l D7,D0 ;CONVERT LEFT PIXELS TO BITS
MOVE.l D0,D4 ;GET LEFT EDGE
AND.l #~$1F,D4 ;LONGWORD ALIGNED
MOVE.l D4,D5 ;MAKE A COPY
ASR.l #3,D5 ;CONVERT BITS TO BYTES
ADD.l D5,A5 ;GET BASE OFFSET IN SCREEN
;-----------------------------------------------
;
; SAVE THE CRSRRECT FOR CURSHIELD
LEA CrsrRect,A1 ;SET UP CRSRRECT
MOVE D2,(A1)+ ;TOP
MOVE.l D4,D5 ;GET LONG ALIGNED LEFT IN BITS
LSR.l D7,D5 ;CONVERT TO PIXELS
MOVE D5,(A1)+ ;LONG ALIGNED LEFT
MOVE D3,(A1)+ ;BOTTOM
MOVE D5,(A1) ;RIGHT = LEFT + longcount/pixs in long
if cursorShadow then
add.w #16,-2(a1) ;grow height for shadow
add.w #16,(a1) ;grow width for shadow
endif
SAMELONG
;-----------------------------------------------
;
; ADJUST DST/SRC OFFSET IN D6
; GET NUMBER OF ROWS TO DO IN D3
; GET LONGCNT IN D5 AND USE TO ADJUST DSTBUMP IN A0
AND #$1F,D0 ;GET LEFT EDGE MOD 32
LSL D7,D6 ;CONVERT OFFSET TO BITS
SUB D0,D6 ; = NEG OFFSET FROM SOURCE
ext.l d1 ;make it a long <BAL 17Jan89>
LSL.l D7,D1 ;CONVERT RIGHT EDGE TO BITS
MOVE.l D1,D5 ;MAKE COPY
SUB.l D4,D5 ;GET WIDTH OF CURSOR
ble SkipBlit ;crsr fits in 0 or fewer longs so don't draw
subq #1,d5 ;force multiples of 32 to round down
LSR.l #5,D5 ;GET LONGS-1
SUB D2,D3 ;D3 = # ROWS TO DO
SUBQ #1,D3 ;MAKE IT 0 BASED
MOVE.l D5,D2 ;GET LONGS
ADDQ.l #1,D2 ;MAKE ONE BASED
LSL.l #2,D2 ;CONVERT TO BYTES
SUB.l D2,A0 ;ADJUST DST BUMP
lsl.l #3,d2 ;get long aligned bit width
lsr.l d7,d2 ;get effective cursr pixel width
add d2,(a1) ;adjust crsrRect.right = left+width
BSR CursorSect ;Now then, do we intersect shield?
BNE SkipBlit ;If so, ththat's all.
;-----------------------------------------------
;
; CONVERT LEFT EDGE AND RIGHT EDGE TO LEFTMASK AND RIGHTMASK IN D4 AND D2
MOVEQ #-1,D4 ;FILL LONG WITH ONES
LSR.L D0,D4 ;AND SHIFT IN 0'S FOR LEFTMASK
MOVEQ #-1,D2 ;FILL LONG WITH ONES
AND #$1F,D1 ;GET RIGHT MOD 32
beq.s @1 ;does right have a real mask? no, flush it
LSR.L D1,D2 ;AND SHIFT 0'S IN FROM RIGHT
NOT.L D2 ;GET RIGHTMASK
;-----------------------------------------------
;
; SAVE DSTLEFT/DSTBUMP/LONGCNT/ROWCNT INTO CRSRPTR SO THAT
; HIDECURSOR KNOWS HOW MUCH SCREEN TO REPLACE.
@1 LEA CCBYTES(A4),A6 ;POINT TO END OF SAVE STATE AREA
MOVE (A6),A1 ;A1 = ROWBYTES FOR EXPANDED CURSOR
MOVE.L ([CCSAVE,A4]),d0 ;A4 = POINTER TO SAVE AREA (LOCKED)
_rTranslate24To32 ;strip off high byte
move.l d0,a4
MOVEM.L A5/A0/D5/D3,-(A6) ;SAVE DSTLEFT/DSTBUMP/LONGCNT/ROWCNT
moveq #true32b,d0 ;switch to 32 bit addressing
movem.l a0-a2,-(sp) ;save off registers
_rSwapMMUMode ;get previous mode in d0.b (can trash a0/a2, d0/d2)
movem.l (sp)+,a0-a2 ;restore registers
move.b d0,-(sp) ;save previous state for later
MOVE.L D5,A6 ;SAVE LONGCNT
EXT.L D6 ;BFEXTU LIKES LONG OFFSETS
MOVE.L D6,-(SP) ;SAVE OFFSET ON STACK
MOVE.L D4,-(SP) ;SAVE LEFTMASK ON STACK
;use alternate loop if on Direct Device <BAL 12 Mar89>
cmp #4,d7 ;are we 16 or 32 bits/pixel (direct device) ?
bge Direct ;no, don't hack
if cursorShadow then
cmp #3,d7
beq Shadow8
endif
TST D5 ;CHECK FOR JUST ONE LONG
BRA.S START ;AND JUMP INTO MIDDLE
;-----------------------------------------------
;
; DISPLAY THE CURSOR AND SAVE THE BITS BEHIND IT (DO THE CURSOR LIMBO!!)
;
; THE FUNNY TRANSFER MODE USED HERE WORKS THE SAME AS BEFORE FOR ONE BIT
; MODE, AND SIMILARLY FOR COLOR. IN COLOR, THE DATA PIXELS WITHIN THE MASK
; REPLACE THE DESTINATION; THE DATA PIXELS OUTSIDE THE MASK ARE XORED WITH
; THE DST. IF THE DATA PIXELS OUTSIDE OF THE MASK ARE BLACK (ALL F'S),
; THEN THE DST IS SIMPLY INVERTED. IF THEY ARE OTHER COLORS, INTERESTING
; EFFECTS WILL MANIFEST THEMSELVES.
;
; REGISTER USE: D0: SCRATCH A0: DSTBUMP
; D1: SCRATCH A1: SRCBUMP
; D2: RIGHTMASK A2: SRCPTR
; D3: ROWCNT A3: MASKPTR
; D4: LEFTMASK A4: SAVEPTR
; D5: LONGCNT A5: DSTPTR
; D6: OFFSET A6: COPY LONGCNT
; D7: SCRATCH (A7): LEFTMASK
; 4(A7): COPY OFFSET
END AND.L D2,D4 ;AND RIGHTMASK INTO LEFTMASK
MAIN BFEXTU (A2){D6:0},D0 ;EXTRACT A LONG OF SRC
BFEXTU (A3){D6:0},D1 ;EXTRACT A LONG OF MASK
ADD.L #32,D6 ;BUMP TO NEXT LONG
AND.L D4,D0 ;AND SRC WITH LEFTMASK
AND.L D4,D1 ;AND MASK WITH LEFTMASK
MOVE.L D0,D7 ;COPY SRC
AND.L D1,D7 ;GET MASK AND SRC (PIXELS TO REPLACE)
NOT.L D1 ;GET NOTMASK
MOVE.L (A5),d4 ;get a long of screen
move.l d4,(A4)+ ;SAVE A LONG OF SCREEN
AND.L D1,D0 ;GET NOTMASK AND SRC (PIXELS TO INVERT)
AND.L d4,D1 ;PUNCH HOLE FOR PIXELS TO REPLACE (used to be A5)
OR.L D7,D1 ;REPLACE PIXELS WITHIN MASK
EOR.L D0,D1 ;INVERT PIXELS OUTSIDE OF MASK
MOVE.L D1,(A5)+ ;AND PUT TO DST
MOVEQ #-1,D4 ;FLUSH LEFTMASK
SUB #1,D5 ;DECREMENT LONGCNT
START BGT.S MAIN ;=>MORE THAN ONE TO DO
BEQ.S END ;=>DO LAST LONG
MOVE.L 4(SP),D6 ;RESTORE OFFSET
MOVE.L (SP),D4 ;RESTORE LEFTMASK
ADD.L A1,A3 ;BUMP CURSOR DATA
ADD.L A1,A2 ;BUMP CURSOR MASK
ADD.L A0,A5 ;BUMP SCREEN POINTER
MOVE.L A6,D5 ;RESTORE LONGCNT (TEST D5)
DBRA D3,START ;=>DO NEXT ROW
bra DoneBlit
Direct
bgt.s Direct32
;-----------------------------------------------
;
; DISPLAY THE CURSOR AND SAVE THE BITS BEHIND IT (DO THE CURSOR LIMBO!!)
;
; THE FUNNY TRANSFER MODE USED HERE WORKS THE SAME AS BEFORE FOR ONE BIT
; MODE, AND SIMILARLY FOR COLOR. IN COLOR, THE DATA PIXELS WITHIN THE MASK
; REPLACE THE DESTINATION; THE DATA PIXELS OUTSIDE THE MASK ARE XORED WITH
; THE DST. IF THE DATA PIXELS OUTSIDE OF THE MASK ARE BLACK (ALL F'S),
; THEN THE DST IS SIMPLY INVERTED. IF THEY ARE OTHER COLORS, INTERESTING
; EFFECTS WILL MANIFEST THEMSELVES.
;
; REGISTER USE: D0: SCRATCH A0: DSTBUMP
; D1: SCRATCH A1: SRCBUMP
; D2: RIGHTMASK A2: SRCPTR
; D3: ROWCNT A3: MASKPTR
; D4: LEFTMASK A4: SAVEPTR
; D5: LONGCNT A5: DSTPTR
; D6: OFFSET A6: COPY LONGCNT
; D7: SCRATCH (A7): LEFTMASK
; 4(A7): COPY OFFSET
Direct16
swap d4
addq #1,d5 ;make one based
add d5,d5 ;convert longcnt to word cnt
move d5,d0 ;save pixel cnt
subq #2,d5 ;make zero based - 1
move d5,a6 ;save a copy for later scans
moveq #-1,d7
lsr.w #1,d7 ;make into low15bits mask
add d0,d0 ;make into byte cnt
sub d0,a1 ;make srcRow into srcBump
asr #3,d6 ;make offset into bytes
add d6,a2 ;adjust src ptr
add d6,a3 ;adjust mask ptr
@first tst d4 ;is left pixel masked?
bne.s @MAIN ;no, go to it
move.w (a5)+,(a4)+ ;save first pixel
addq #2,a2 ;bump past first src pixel
addq #2,a3 ;bump past first mask pixel
bra.s @next
@MAIN move.w (A2)+,D0 ;EXTRACT A LONG OF SRC
MOVE.w (A5),d1 ;get a long of screen
move.w d1,(A4)+ ;SAVE A LONG OF SCREEN
tst.w (A3)+ ;EXTRACT A LONG OF MASK
bne.s @inside
not.w d0 ;flip src so that black is all 1's
and.w d7,d0 ;mask off high bit
beq.s @skipit ;no use in xoring with zero
eor.w d1,d0 ;xor dst with src
@inside
move.w d0,(a5)
@skipit addq #2,a5
@next dbra D5,@MAIN ;DECREMENT LONGCNT
tst d2 ;is right pixel masked?
bne.s @last ;no, go to it
move.w (a5)+,(a4)+ ;save first pixel
addq #2,a2 ;bump past first src pixel
addq #2,a3 ;bump past first mask pixel
bra.s @nxtScn
@last move.w (A2)+,D0 ;EXTRACT A LONG OF SRC
MOVE.w (A5),d1 ;get a long of screen
move.w d1,(A4)+ ;SAVE A LONG OF SCREEN
tst.w (A3)+ ;EXTRACT A LONG OF MASK
bne.s @in
not.w d0 ;flip src so that black is all 1's
and.w d7,d0 ;mask off high bit
beq.s @skip ;no use in xoring with zero
eor.w d1,d0 ;xor dst with src
@in
move.w d0,(a5)
@skip addq #2,a5
@nxtScn ADD.L A1,A3 ;BUMP CURSOR DATA
ADD.L A1,A2 ;BUMP CURSOR MASK
ADD.L A0,A5 ;BUMP SCREEN POINTER
MOVE.L A6,D5 ;RESTORE LONGCNT
DBRA D3,@First ;=>DO NEXT ROW
bra DoneBlit
;-----------------------------------------------
;
; DISPLAY THE CURSOR AND SAVE THE BITS BEHIND IT (DO THE CURSOR LIMBO!!)
;
; THE FUNNY TRANSFER MODE USED HERE WORKS THE SAME AS BEFORE FOR ONE BIT
; MODE, AND SIMILARLY FOR COLOR. IN COLOR, THE DATA PIXELS WITHIN THE MASK
; REPLACE THE DESTINATION; THE DATA PIXELS OUTSIDE THE MASK ARE XORED WITH
; THE DST. IF THE DATA PIXELS OUTSIDE OF THE MASK ARE BLACK (ALL F'S),
; THEN THE DST IS SIMPLY INVERTED. IF THEY ARE OTHER COLORS, INTERESTING
; EFFECTS WILL MANIFEST THEMSELVES.
;
; REGISTER USE: D0: SCRATCH A0: DSTBUMP
; D1: SCRATCH A1: SRCBUMP
; D2: RIGHTMASK A2: SRCPTR
; D3: ROWCNT A3: MASKPTR
; D4: LEFTMASK A4: SAVEPTR
; D5: LONGCNT A5: DSTPTR
; D6: OFFSET A6: COPY LONGCNT
; D7: SCRATCH (A7): LEFTMASK
; 4(A7): COPY OFFSET
if cursorShadow then
Direct32
move d5,d0 ;get a copy of long cnt
addq #1,d0 ;make one based
lsl #2,d0 ;make into byte cnt
sub d0,a1 ;make srcRow into srcBump
asr #3,d6 ;make offset into bytes
add d6,a2 ;adjust src ptr
add d6,a3 ;adjust mask ptr
voff equ 4
hoff equ 4
;-----------------------------------------------
;
; SAVE DSTLEFT/DSTBUMP/LONGCNT/ROWCNT INTO CRSRPTR SO THAT
; HIDECURSOR KNOWS HOW MUCH SCREEN TO REPLACE.
movem.l d3/d5/a6/a5/a0,-(sp)
MOVE.L ([CRSRPTR]),D0 ;GET POINTER TO CURSOR DATA (LOCKED)
_rTranslate24To32
MOVE.L D0,A6
LEA CCBYTES(A6),A6 ;POINT TO END OF SAVE STATE AREA
move.w mouse,d0 ;get vert pos
lsr.w #6,d0
; add.w #voff,d3
add.w d0,d3
move.w mouse+2,d0 ;get horiz pos
lsr.w #6,d0
; add.w #hoff,d5
add.w d0,d5
lsl.w #2,d0
; sub.w #hoff*4,a0
sub.w d0,a0
MOVEM.L A5/A0/D5/D3,-(A6) ;SAVE DSTLEFT/DSTBUMP/LONGCNT/ROWCNT
MOVE.L D5,A6 ;SAVE LONGCNT
@MAIN2 MOVE.L (A5)+,d1 ;get a long of screen
move.l d1,(a4)+ ;save a long of screen
dbra D5,@MAIN2 ;DECREMENT LONGCNT
ADD.L A0,A5 ;BUMP SCREEN POINTER
MOVE.L A6,D5 ;RESTORE LONGCNT
DBRA D3,@MAIN2 ;=>DO NEXT ROW
movem.l (sp)+,a5/d3/d5/a6/a0
movem.l d3/a2-a5,-(sp)
; moveq #voff,d0
move.w mouse,d0 ;get vert pos
lsr.w #6,d0
bra.s @1
@0 ADD.w CRSRROW,A5 ;offset SCREEN POINTER vertically
@1 dbra d0,@0
move.w mouse+2,d0 ;get horiz pos
lsr.w #6,d0
lsl.w #2,d0
; add.w #hoff*4,a5
add.w d0,a5
@MAIN1 MOVE.L (A5),d1 ;get a long of screen
move.l (A2)+,d0 ;combine A LONG OF src
not.l d0 ;interested in nothing , dammit!!@!
and.l $31a,d0 ; shit line
or.l (A3)+,d0 ;EXTRACT A LONG OF MASK
beq.s @skipit1
;d0 = 0
moveq #0,d0 ;assume result is black
moveq #$3f,d4 ;amount to remove from screen
swap d4 ;d4 = $3f0000
sub.l d4,d1 ;darken the red channel
bcs.s @pinred
move.l d1,d0 ;take the red channel
@pinred
lsr.l #8,d4
sub.w d4,d1 ;darken the grn channel
bcs.s @pingrn
move.w d1,d0 ;take the grn channel
@pingrn
lsr.w #8,d4
sub.b d4,d1 ;darken the blu channel
bcs.s @pinblu
move.b d1,d0 ;take the blu channel
@pinblu
move.l d0,(a5)
@skipit1
addq #4,a5
dbra D5,@MAIN1 ;DECREMENT LONGCNT
ADD.L A1,A3 ;BUMP CURSOR DATA
ADD.L A1,A2 ;BUMP CURSOR MASK
ADD.L A0,A5 ;BUMP SCREEN POINTER
MOVE.L A6,D5 ;RESTORE LONGCNT
DBRA D3,@MAIN1 ;=>DO NEXT ROW
movem.l (sp)+,d3/a2-a5
@MAIN move.l (A2)+,D0 ;EXTRACT A LONG OF SRC
MOVE.L (A5),d1 ;get a long of screen
tst.l (A3)+ ;EXTRACT A LONG OF MASK
bne.s @inside
not.l d0 ;flip src so that black is all 1's
beq.s @skipit ;no use in xoring with zero
eor.l d1,d0 ;xor dst with src
@inside
move.l d0,(a5)
@skipit addq #4,a5
dbra D5,@MAIN ;DECREMENT LONGCNT
ADD.L A1,A3 ;BUMP CURSOR DATA
ADD.L A1,A2 ;BUMP CURSOR MASK
ADD.L A0,A5 ;BUMP SCREEN POINTER
MOVE.L A6,D5 ;RESTORE LONGCNT
DBRA D3,@MAIN ;=>DO NEXT ROW
bra DoneBlit
; REGISTER USE: D0: SCRATCH A0: DSTBUMP
; D1: SCRATCH A1: SRCBUMP
; D2: RIGHTMASK A2: SRCPTR
; D3: ROWCNT A3: MASKPTR
; D4: LEFTMASK A4: SAVEPTR
; D5: LONGCNT A5: DSTPTR
; D6: OFFSET A6: COPY LONGCNT
; D7: SCRATCH (A7): LEFTMASK
; 4(A7): COPY OFFSET
Shadow8
move d5,d0 ;get a copy of long cnt
addq #1,d0 ;make one based
lsl #2,d0 ;make into byte cnt
sub d0,a1 ;make srcRow into srcBump
asr #3,d6 ;make offset into bytes
add d6,a2 ;adjust src ptr
add d6,a3 ;adjust mask ptr
;-----------------------------------------------
;
; SAVE DSTLEFT/DSTBUMP/LONGCNT/ROWCNT INTO CRSRPTR SO THAT
; HIDECURSOR KNOWS HOW MUCH SCREEN TO REPLACE.
movem.l d3/d5/a6/a5/a0,-(sp)
MOVE.L ([CRSRPTR]),D0 ;GET POINTER TO CURSOR DATA (LOCKED)
_rTranslate24To32
MOVE.L D0,A6
LEA CCBYTES(A6),A6 ;POINT TO END OF SAVE STATE AREA
move.w mouse,d0 ;get vert pos
lsr.w #6,d0 ;d0=voff
; add.w #voff,d3
add.w d0,d3
move.w mouse+2,d0 ;get horiz pos
lsr.w #6,d0 ;d0=hoff
; add.w #hoff,d5
addq #3,d0
lsr.w #2,d0 ;d0=shadow width longs
add.w d0,d5
lsl.w #2,d0
; sub.w #hoff*4,a0
sub.w d0,a0
MOVEM.L A5/A0/D5/D3,-(A6) ;SAVE DSTLEFT/DSTBUMP/LONGCNT/ROWCNT
MOVE.L D5,A6 ;SAVE LONGCNT
;-------------------------------------------
; Save bits under cursor/shadow
;-------------------------------------------
@MAIN2 MOVE.L (A5)+,d1 ;get a long of screen
move.l d1,(a4)+ ;save a long of screen
dbra D5,@MAIN2 ;DECREMENT LONGCNT
ADD.L A0,A5 ;BUMP SCREEN POINTER
MOVE.L A6,D5 ;RESTORE LONGCNT
DBRA D3,@MAIN2 ;=>DO NEXT ROW
movem.l (sp)+,a5/d3/d5/a6/a0
;-------------------------------------------
; Draw Shadow
;-------------------------------------------
movem.l d3/a2-a5,-(sp)
; moveq #voff-1,d0
move.w mouse,d0 ;get vert pos
lsr.w #6,d0
bra.s @1
@0 ADD.w CRSRROW,A5 ;offset SCREEN POINTER vertically
@1 dbra d0,@0
move.w mouse+2,d0 ;get horiz pos
lsr.w #6,d0
add.w d0,a5
; add.w #hoff,a5
@MAIN1 MOVE.l (A5),d1 ;get a long of screen
move.l (A2)+,d0 ;combine A LONG OF src
or.l (A3)+,d0 ;EXTRACT A LONG OF MASK
beq.s @skipit1
;d0 = 0
moveq #0,d0 ;assume result is black
moveq #$3f,d4 ;amount to remove from screen
swap d4 ;d4 = $3f0000
sub.l d4,d1 ;darken the red channel
bcs.s @pinred
move.l d1,d0 ;take the red channel
@pinred
lsr.l #8,d4
sub.w d4,d1 ;darken the grn channel
bcs.s @pingrn
move.w d1,d0 ;take the grn channel
@pingrn
lsr.w #8,d4
sub.b d4,d1 ;darken the blu channel
bcs.s @pinblu
move.b d1,d0 ;take the blu channel
@pinblu
; move.l d0,(a5)
@skipit1
addq #4,a5
dbra D5,@MAIN1 ;DECREMENT LONGCNT
ADD.L A1,A3 ;BUMP CURSOR DATA
ADD.L A1,A2 ;BUMP CURSOR MASK
ADD.L A0,A5 ;BUMP SCREEN POINTER
MOVE.L A6,D5 ;RESTORE LONGCNT
DBRA D3,@MAIN1 ;=>DO NEXT ROW
movem.l (sp)+,d3/a2-a5
;-------------------------------------------
; Draw cursor atop shadow
;-------------------------------------------
@MAIN move.l (A2)+,D0 ;EXTRACT A LONG OF SRC
tst.l (A3)+ ;EXTRACT A LONG OF MASK
bne.s @inside
tst.l d0 ;flip src so that black is all 1's
beq.s @skipit ;no use in xoring with zero
MOVE.L (A5),d1 ;get a long of screen
eor.l d1,d0 ;xor dst with src
@inside
move.l d0,(a5)
@skipit addq #4,a5
dbra D5,@MAIN ;DECREMENT LONGCNT
ADD.L A1,A3 ;BUMP CURSOR DATA
ADD.L A1,A2 ;BUMP CURSOR MASK
ADD.L A0,A5 ;BUMP SCREEN POINTER
MOVE.L A6,D5 ;RESTORE LONGCNT
DBRA D3,@MAIN ;=>DO NEXT ROW
else
Direct32
moveq #-1,d4
lsr.l #8,d4 ;get low3bytes in d4
move d5,d0 ;get a copy of long cnt
addq #1,d0 ;make one based
lsl #2,d0 ;make into byte cnt
sub d0,a1 ;make srcRow into srcBump
asr #3,d6 ;make offset into bytes
add d6,a2 ;adjust src ptr
add d6,a3 ;adjust mask ptr
@MAIN move.l (A2)+,D0 ;EXTRACT A LONG OF SRC
MOVE.L (A5),d1 ;get a long of screen
move.l d1,(A4)+ ;SAVE A LONG OF SCREEN
tst.l (A3)+ ;EXTRACT A LONG OF MASK
bne.s @inside
not.l d0 ;flip src so that black is all 1's
and.l d4,d0 ;mask off high byte
beq.s @skipit ;no use in xoring with zero
eor.l d1,d0 ;xor dst with src
@inside
move.l d0,(a5)
@skipit addq #4,a5
dbra D5,@MAIN ;DECREMENT LONGCNT
ADD.L A1,A3 ;BUMP CURSOR DATA
ADD.L A1,A2 ;BUMP CURSOR MASK
ADD.L A0,A5 ;BUMP SCREEN POINTER
MOVE.L A6,D5 ;RESTORE LONGCNT
DBRA D3,@MAIN ;=>DO NEXT ROW
endif
DoneBlit
ADDQ #8,SP ;STRIP LEFTMASK AND OFFSET
MOVE.B #1,CrsrVis ;CURSOR VISIBLE
moveq #0,d0
move.b (sp)+,d0 ;get previous MMU state in d0
_rSwapMMUMode ;restore MMU mode from d0.b
SkipBlit
MOVEM.L (SP)+,D0-D7/A0-A6 ;THE WALTZ IS OVER...(TANGO VERY MUCH)
NoBlit
RTS
;_______________________________________________________________________
;
; UNBLITCURSOR <dvb 19sep88>
;
; This routine unconditionally removes cursor according to the data in
; CCSTATEREGS.
; Such things as crsrstate, crsrvis, and other nonsense have already been
; checked. Vectoring this routine may prove useful for later cursor
; enhancements.
UNBLITCURSOR PROC EXPORT
TST.L CRSRPTR ;CURSOR ALLOCATED?
BMI.S DONEHIDE ;=>NO, JUST RETURN
MOVEM.L D1-D4/A0-A2,-(SP) ;SAVE REGS USED
MOVE.L ([CRSRPTR]),A0 ;GET POINTER TO CURSOR SAVE DATA (LOCKED)
MOVE.L CCSAVE(A0),A1 ;GET HANDLE TO SAVED BITS
MOVE.L (A1),d0 ;POINT TO SAVED BITS
_rTranslate24To32 ;mask off high byte
move.l d0,a1
LEA CCSTATEREGS(A0),A0 ;POINT TO SAVE STATE AREA
MOVEM.L (A0)+,D2/D3/D4/A2 ;GET /ROWCNT/LONGCNT/DSTBUMP/DSTLEFT
moveq #true32b,d0 ;switch to 32 bit mode
movem.l d2/a1/a2,-(sp) ;save off registers
_rSwapMMUMode ;get previous mode in d0.b (can trash a0/a2, d0/d2)
movem.l (sp)+,d2/a1/a2 ;restore registers
MOVE.L D3,A0 ;SAVE LONGCNT
@1 MOVE.L (A1)+,(A2)+ ;RESTORE A LONG OF SOURCE
DBRA D3,@1 ;=>DO ENTIRE ROW
MOVE.L A0,D3 ;RESTORE LONGCNT
ADD D4,A2 ;BUMP DST
DBRA D2,@1 ;=>DO FOR ALL LINES
_rSwapMMUMode ;restore original mode from d0.b
CLR.B CRSRVIS ;MARK IT AS INVISIBLE
MOVEM.L (SP)+,D1-D4/A0-A2 ;RESTORE REGS USED
DONEHIDE RTS
;
;_______________________________________________________________________
;
; FUNCTION ScrnAddress:Ptr;
;
; return a pointer to the start of the bit-map display
;
ScrnAddress PROC EXPORT
MOVE.L ScrnBase,4(SP) ;get screenBase set up by OS
RTS ;that was easy!
;
;_______________________________________________________________________
;
; PROCEDURE ScrnSize(VAR hDots,vDots: INTEGER);
;
; return the size of the screen in pixels
;
ScrnSize PROC EXPORT
MOVE.L (SP)+,D0 ;get the return address
MOVE.L MainDevice,A0 ;get handle to main screen device
MOVE.L (A0),A0 ;point to main screen device
MOVE.L (SP)+,A1 ;get pointer to vDots
MOVE GDRect+bottom(A0),D1 ;get bottom
SUB GDRect+top(A0),D1 ;calc height
MOVE D1,(A1) ;return the number of vertical pixels
MOVE.L (SP)+,A1 ;get pointer to hdots
MOVE GDRect+right(A0),D1 ;get right
SUB GDRect+left(A0),D1 ;calc width
MOVE D1,(A1) ;return the number of horizontal pixels
MOVE.L D0,A0 ;get return address
JMP (A0) ;and return
;_______________________________________________________________________
;
; PROCEDURE ScrnBitMap(VAR x: BitMap);
;
; return the screen bitmap
;
ScrnBitMap PROC EXPORT
MOVE.L (SP)+,D0 ;get the return address
MOVE.L MainDevice,A0 ;get handle to main screen device
MOVE.L (A0),A0 ;point to main screen device
MOVE.L GDPMap(A0),A0 ;get handle to screen's pixMap
MOVE.L (A0),A0 ;point to screen's pixMap
MOVE.L (SP)+,A1 ;get pointer to BitMap
MOVE.L (A0)+,(A1)+ ;copy base addr
MOVE (A0)+,D1 ;get rowbytes
AND #nuRBMask,D1 ;mask flag bits
MOVE D1,(A1)+ ;copy rowbytes
MOVE.L (A0)+,(A1)+ ;copy bounds.topleft
MOVE.L (A0)+,(A1)+ ;copy bounds.botright
MOVE.L D0,A0 ;get return address
JMP (A0) ;and return
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