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sys7.1-doc-wip/QuickDraw/ColorAsm.a
Horst Beepmanh 33cd9271f4 SuperMarioProj.1994-02-09
2019-07-27 22:37:48 +08:00

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;
; File: ColorAsm.a
;
; Copyright: © 1981-1990, 1992-1993 by Apple Computer, Inc., all rights reserved.
;
; Change History (most recent first):
;
; <SM7> 9/12/93 SAM Changed all instances of _Translate24to32 to _rTranslate24to32
; so they can conditionalized out of the build.
; <SM6> 1/5/93 PN Revert back to the previous version and back out the change
; because the fix should be in DisposeHandle in MemoryMgr.
; <SM5> 1/4/93 RB In DisposCTable, do not dispose of Color tables in ROM.
; <SM4> 6/11/92 stb <sm 6/9/92>stb Add comment to BitsToPix to reflect that
; QDciPatchROM.a and this file are synched-up.
; <SM3> 5/21/92 kc Change the name of QuickDraws wrapper for NewHandle to
; NewHandleWrapper to avoid name conflict with the glue.
; <SM2> 4/15/92 RB Rolled in PatchOpenCPort, set pnLocFixed to a good value when
; opening a new color port. from QuickDrawPatches.a
; <12> 1/15/92 KC Fix "If last BRA.S to import is to next instruction, BAD CODE
; will be generated" assembler warning.
; <11> 6/3/91 DDG Harmless addition of comment to test bbs scripts.
; <10> 11/26/90 SMC Fixed another problem with the way grafvars flag bit was getting
; set. With BAL.
; <9> 11/7/90 SMC Fixed bug in InitCPort where grafvars flag bit wasn't getting
; set correctly. With BAL.
; <8> 10/31/90 SMC Fixed alpha channel crimes with BAL.
; <7> 10/29/90 KON Insure hRes and vRes always 72 dpi for InitPixMap (NewPixMap).
; <6> 9/17/90 BG Removed <5>. 040s are now behaving more reliably.
; <5> 6/25/90 BG Added an EclipseNOP to fix a flakey 040 problem.
; <4> 4/11/90 KON gdFlags was off by 1.
; <3> 4/10/90 KON Make BitsToPix return whether pixmap needs 32-bit addressing in
; high word of D2.
; <2> 1/3/90 BAL Remove references to A5 global ScreenBits.baseAddr.
; <•2.4> 7/14/89 BAL For Aurora: Final CQD
; <2.3> 7/14/89 BAL FOR Aurora: Made BitsToPix recognize 32 bit addressed pixmaps
; <2.2> 7/6/89 GGD Un-Proc'd InitCPort so that alignment wouldn't screw up
; OpenCPort falling into it.
; <2.1> 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 files…
; <2.0> 5/30/89 DAF Undid <1.9> since it was nuking the window's palette across PICT
; drawing
; <1.9> 5/30/89 BAL Changed InitCPort to zero the paletteHandle in grafVars.
; <•1.8> 5/29/89 BAL Blasting in 32-Bit QuickDraw version 1.0 Final
; 9/19/88 BAL Changed BitsToPix to return with D2=1 if XMap is screen
; 4/8/88 BAL Change BitsToPix to mask high byte of baseAddr if not the screen
; 11/8/87 DAF Fixed CloseCPort/ClosePort to eliminate disposes of NIL
; patHandles
; 5/27/87 EHB Rolled in patch to make imagewriter work.
; 12/12/86 CRC Added grafVars, frac h pen, charExtra to color ports
; 8/18/86 EHB Moved PixPat stuff to patterns.a
; 8/11/86 EHB Added color pixMap support to OpenCPort, CloseCPort and
; InitCPort. Added new routine OneBitCTable.
; 8/5/86 EHB Put new Color grafPorts into PortList!!
; 7/5/86 EHB Deleted routine GetSizeShift (do it inline) New routines
; PortToMap and BitsToMap
; 6/15/86 EHB Added routine GetSizeShift
; 6/14/86 EHB Added routine BitsToPix
; 5/15/86 EHB New today
BLANKS ON
STRING ASIS
MACHINE MC68020
;------------------------------------------------------------
;
; ROUTINES TO MANIPULATE THE NEW COLOR DATA STRUCTURES
;
;------------------------------------------------------------
; extra comment (remove later)
;-------------------------------------------------------------
;
; LITTLE UTILITY ROUTINES
;
;-------------------------------------------------------------
ONEBITCTABLE PROC EXPORT
EXPORT FILLONEBIT
IMPORT RSetHSize
;-----------------------------------------------------------
;
; OneBitCTable (CTabHandle);
; Fill in the specified handle with a one bit color table
; This table has two entries: White and black.
;
; NOTE: This should probably go through the color manager (should
; we keep around a dummy 1-bit gDevice for such purposes?)
;
MOVE.L (SP)+,A1 ; get the return address
MOVE.L (SP)+,A0 ; get the handle
MOVE.L #CTRec+16,D0 ; get size of record + table
JSR RSetHSize ; set the handle size
MOVE.L (A0),A0 ; get the table pointer
FILLONEBIT MOVEQ #1,D1 ; GET A USEFUL NUMBER
MOVE.L D1,(A0)+ ; CTSEED := 1 (matches resource id)
MOVE.L D1,(A0)+ ; TransIndex := 0, CTSize := 1
CLR (A0)+ ; entry 0: value := 0
MOVEQ #-1,D0 ; set entry 0 to white
MOVE.L D0,(A0)+ ; set R,G
MOVE D0,(A0)+ ; and B
SWAP D1 ; D1 = $00010000
MOVE.L D1,(A0)+ ; entry1: value := 1, R = 0
CLR.L (A0)+ ; set G, B
JMP (A1) ; and return
PORTTOMAP PROC EXPORT
EXPORT BITSTOMAP
;-----------------------------------------------------------
;
; LOCAL PROCEDURE PORTTOMAP
;
; CALLED IF WE KNOW WE'RE POINTING AT A PORT TO GET ITS BIT/PIXMAP
;
; Enter with: A0: PORT
; Exit with: A0: PORT's bitMap or pixMap
;
ADDQ #PORTBITS,A0 ;POINT TO BITMAP/PIXMAP HANDLE
BITSTOMAP
;-----------------------------------------------------------
;
; LOCAL PROCEDURE BITSTOMAP
;
; CALLED IF WE ARE POINTING AT A BIT/PIXMAP OF UNKNOWN ORIGIN
;
; Enter with: A0: BITMAP/PIXMAP WHICH MIGHT BELONG TO A PORT
; Exit with: A0: bitMap or pixMap
;
TST ROWBYTES(A0) ;BITMAP OR PIXMAP?
BPL.S GOTBITMAP ;=>JUST A BITMAP
BTST #ISCPORT,ROWBYTES(A0) ;IS IT A COLOR PORT?
BEQ.S GOTBITMAP ;=>NO, JUST A PIXMAP
MOVE.L BASEADDR(A0),A0 ;ELSE GET PORT'S PIXMAP HANDLE
MOVE.L (A0),A0 ;GET PIXMAP POINTER
GOTBITMAP RTS
;------------------------------------------------------------
;
; ROUTINES TO MANIPULATE COLOR PORTS
;
;------------------------------------------------------------
OpenCPort PROC EXPORT
IMPORT NewPort,NewPixPat,NewPixMap,NewHandleWrapper
IMPORT InitCFields,InsPortList
;------------------------------------------------------------
;
; PROCEDURE OpenCPort (cp: CGrafPtr);
;
; OPEN A COLOR GRAFPORT, ALLOCATE ITS STORAGE, INITIALIZE IT
;
;-------------------------------------------
;
; ALLOCATE A GRAFPORT
;
MOVE.L GrafGlobals(A5),A0 ; get quickdraw globals in a0 <SM2> rb
MOVE.W #$8000,pnLocFixed(A0) ; set the default pen fraction <SM2> rb
MOVE.L 4(SP),-(SP) ; push grafPort
MOVE.L (SP),-(SP) ; and a copy for InsPortList
JSR NEWPORT ; and init regions
JSR InsPortList ; add port to portlist
;-------------------------------------------
;
; ALLOCATE A PIXELMAP
; WITHOUT COLORTABLE SINCE WE'LL USE THEGDEVICE'S TABLE
;
CLR.L -(SP) ; make room for function result
MOVE #pmRec,-(SP) ; size of pixel map record
JSR NewHandleWrapper ; get a handle, leave on stack
;-------------------------------------------
;
; INSTALL THE FIELDS INTO THE CGRAFPORT
;
MOVE.L 8(SP),A0 ; point to the port
MOVE.L (SP)+,portPixMap(A0) ; install new handle for pixMap
CLR.L bkPixPat(A0) ; clear for oldPatToNew
CLR.L pnPixPat(A0) ; clear for oldPatToNew
CLR.L fillPixPat(A0) ; clear for oldPatToNew
CLR.L grafVars(A0) ; initialize for init
;-------------------------------------------
;
; INDICATE THAT THIS IS A COLOR GRAFPORT
;
MOVE #cPortFlag,portVersion(A0) ; flag that it's a color port
;-------------------------------------------
;
; FALL INTO SHARED CODE WHICH INITIALIZES THE CGRAFPORT
EXPORT InitCPort ; <2.2>
IMPORT InitShared,InitPixMap,OldPatToNew,InitColorStuff
InitCPort ; <2.2>
;-------------------------------------------------------------
;
; PROCEDURE InitCPort(cp: cGrafPtr);
;
; INITIALIZE A CGRAFPORT TO ITS DEFAULT SETTINGS.
; DEFAULT SETTINGS INHERITED FROM THE CURRENT GRAFDEVICE.
; IF CP IS AN OLD GRAFPORT, THEN JUST RETURN
;
MOVE.L A2,-(SP) ; save work register
MOVE.L 8(SP),A2 ; get cGrafPtr
TST portVersion(A2) ; is it a new grafPort?
BPL DONE ; => no, just return
;-------------------------------------------
;
; INITIALIZE ALL FIELDS SHARED BY GRAFPORT AND CGRAFPORT
;
JSR InitShared ; initialize shared fields
;-------------------------------------------
;
; COPY THE DEFAULT PIXMAP FROM THE CURRENT GRAFDEVICE
;
MOVE.L theGDevice,A0 ; get grafDevice handle
MOVE.L (A0),A0 ; get grafDevice pointer
MOVE.L GDPMap(A0),A0 ; get handle to grafDevice's pixMap
MOVE.L (A0),A0 ; get pixMap pointer
MOVE.L portPixMap(A2),A1 ; get port's pixMap handle
MOVE.L (A1),A1 ; get pixMap pointer
MOVE #pmRec/2-1,D0 ; get size of pixMap in words
NXTWORD MOVE (A0)+,(A1)+ ; copy from grafDevice to cGrafPort
DBRA D0,NXTWORD ; => do next word
if ADDRMODEFLAG then ; <BAL 11Dec88>
MOVE.L portPixMap(A2),A1 ; get port's pixMap handle
MOVE.L (A1),A1 ; get pixMap pointer
clr.w pmVersion(A1) ; assume 24 bit addressing
endif
;-------------------------------------------
;
; INITIALIZE FIELDS THAT ARE ONLY IN COLOR GRAFPORT
;
MOVE.L A2,-(SP) ; push grafptr
JSR INITCOLORSTUFF ; and initialize color fields
DONE MOVE.L (SP)+,A2 ; restore work register
MOVE.L (SP)+,(SP) ; strip param
RTS ; and return
INITCOLORSTUFF PROC EXPORT
IMPORT OldPatToNew,RNewHandle
;-------------------------------------------
;
; PROCEDURE INITCOLORSTUFF (port: GRAFPTR);
;
; Initialize the color patterns, RGB foreground, and RGB background fields.
;
; CALLED BY: INITCPORT AND DRAWPICTURE
;
MOVE.L A2,-(SP) ; save work register
MOVE.L 8(SP),A2 ; get grafport
CLR.L -(SP) ; bkPat := white
CLR.L -(SP) ; put white pattern on stack
MOVE.L SP,-(SP) ; point to white pattern
PEA bkPixPat(A2) ; push background pixPat handle
_OldPatToNew ; old pattern -> new pattern
NOT.L (SP) ; pnPat := black
NOT.L 4(SP)
MOVE.L SP,-(SP) ; point to black pattern
PEA pnPixPat(A2) ; push pen pixPat handle
_OldPatToNew ; old pattern -> new pattern
MOVE.L SP,-(SP) ; point to black pattern
PEA fillPixPat(A2) ; push pen pixPat handle
_OldPatToNew ; old pattern -> new pattern
ADDQ #8,SP ; strip black from stack
;-------------------------------------------
;
; INITIALIZE THE PORT'S FOREGROUND AND BACKGROUND COLORS
;
MOVE.L #blackColor,-(SP) ; push black
_ForeColor ; set the foreground color
MOVE.L #whiteColor,-(SP) ; push white
_BackColor ; set the background color
;-------------------------------------------
;
; INITIALIZE FRACTIONAL PEN POSITION TO 1/2, Character Extra to 0
MOVE.L #$00008000,chExtra(A2) ; CHEXTRA := 0, PnLocHFrac := 1/2
;———————————————————————————————————————————
;
; Initialize grafVars opColor, hiliteColor
;
TST.L grafVars(A2)
BNE.S @skipNew
MOVEQ #newGrafVarRec,D0 ; get size of record <8>
JSR RNewHandle ; op color is initialized to black
MOVE.L A0,grafVars(A2) ; point grafVars field to handle
MOVE.L (A0),A0 ; deref grafvars handle <8>
BSET #pmNewGVBit-8,pmFlags(A0) ; set new grafvars flag <8>
@skipNew MOVE.L ([grafVars,A2]),A0 ; get a pointer to the data
CLR.L (A0)+ ; RGBOpColor = black
CLR (A0)+ ; init rest of RGBOpColor
MOVE.L HiliteRGB,(A0)+ ; RGBHiliteColor initialized
MOVE HiliteRGB+4,(A0)+ ; to low-memory default
; Clear out paletteMgr info for the Brinker <BAL 30May89>
;+++ CLR.L (A0)+ ; paletteHandle = nil (fgColor)
;+++ CLR.L (A0)+ ; fgindex/bkColor
;+++ CLR.L (A0)+ ; bkColor/bkindex
;+++ CLR.w (A0) ; pmFlags
MOVE.L (SP)+,A2 ; restore work register
MOVE.L (SP)+,(SP) ; strip param
RTS ; and return
CloseCPort PROC EXPORT
ClosePort PROC EXPORT
Import DelPortList,DisposPixMap,DisposPixPat
;-------------------------------------------------------------
;
; PROCEDURE ClosePort(port: GrafPtr);
;
; Disposes of clipRgn and visRgn.
;
; If color grafPort, dispose of additional fields
;
MOVE.L 4(SP),-(SP) ;PUSH GRAFPTR
JSR DelPortList ;DELETE PORT FROM PORTLIST
MOVE.L 4(SP),A0 ;GET PORT
MOVE.L CLIPRGN(A0),A0 ;GET CLIPRGN HANDLE
_DisposHandle ;DISCARD IT
MOVE.L 4(SP),A0 ;GET PORT
MOVE.L VISRGN(A0),A0 ;GET VISRGN HANDLE
_DisposHandle ;DISCARD IT
MOVE.L 4(SP),A0 ;GET PORT
TST PortBits+RowBytes(A0) ;IS IT A NEW PORT?
BPL.S DONE ;=>NO, STRIP PARAMS AND RETURN
;-------------------------------------------
;
; DISPOSE OF OLD COLOR PATTERNS, BUT NOT NEW
;
MOVEQ #-1,D0 ; setup counter for disposes <C953/08Nov87> DAF
TST.L bkPixPat(A0) ; is it NIL? <C953/08Nov87> DAF
BEQ.S @100 ; if NIL, then skip <C953/08Nov87> DAF
ADDQ #1,D0 ; <C953/08Nov87> DAF
MOVE.L bkPixPat(A0),-(SP) ; push bkPixPat handle <C953/08Nov87> DAF
@100 TST.L pnPixPat(A0) ; is it NIL? <C953/08Nov87> DAF
BEQ.S @101 ; if NIL, then skip <C953/08Nov87> DAF
ADDQ #1,D0 ; <C953/08Nov87> DAF
MOVE.L pnPixPat(A0),-(SP) ; push pnPixPat handle <C953/08Nov87> DAF
@101 TST.L fillPixPat(A0) ; is it NIL? <C953/08Nov87> DAF
BEQ.S @102 ; if NIL, then skip <C953/08Nov87> DAF
ADDQ #1,D0 ; <C953/08Nov87> DAF
MOVE.L fillPixPat(A0),-(SP) ; push fillPixPat handle <C953/08Nov87> DAF
@102 TST D0 ; do we need to do any? <C953/08Nov87> DAF
BMI.S @DispMap ; nope, so skip disposing <C953/08Nov87> DAF
@NxtPat MOVE.L (SP)+,A0 ; get next pattern handle
TST ([A0],patType) ; old pattern?
BNE.S @NewPat ; =>no, don't dispose
MOVE D0,-(SP) ; save counter
MOVE.L A0,-(SP) ; push handle
_DisposPixPat ; dispose of handle
MOVE (SP)+,D0 ; get counter
@NewPat DBRA D0,@NxtPat ; => repeat for each pattern
@DispMap
;-------------------------------------------
;
; DISPOSE OF THE PIXMAP WITHOUT DISPOSING OF ITS COLOR TABLE
; (WHICH IS OWNED BY THE GRAFDEVICE).
;
MOVE.L 4(SP),A0 ; GET CGRAFPORT
MOVE.L portPixMap(A0),A0 ; GET PIXMAP HANDLE
_DisposHandle ; AND DISPOSE OF IT
;———————————————————————————————————————————
;
; Dispose of the grafVars handle (contains opColor, hiliteColor)
;
MOVE.L 4(SP),A0 ; get grafport
MOVE.L grafVars(A0),A0 ; get grafVars handle
_DisposHandle ; and toss it
DONE RTD #4 ; strip params and return
SETCPORTPIX PROC EXPORT
;----------------------------------------------------------
;
; PROCEDURE SetPortPix(pm: PixMapHandle);
; { re-direct output to a different PixMap }
;
MOVE.L GRAFGLOBALS(A5),A0 ;POINT TO QUICKDRAW GLOBALS
MOVE.L THEPORT(A0),A0 ;GET CURRENT GRAFPORT
TST PORTVERSION(A0) ;IS IT A COLOR PORT?
BPL.S DONE ;=>NO, JUST EXIT
MOVE.L 4(SP),portPixMap(A0) ;REPLACE PORTPIXMAP
DONE RTD #4 ;STRIP PARAMS AND RETURN
;-------------------------------------------------------------
;
; ROUTINES TO MANIPULATE COLOR TABLES
;
;-------------------------------------------------------------
; <GetCTable moved to ColorMgr.a 12Apr89 BAL>
NEWCTAB PROC EXPORT
IMPORT NewHandleWrapper
;-------------------------------------------------------------
;
; FUNCTION NewCTab : CTabHandle;
;
; Create a new, uninitialized color table and return a handle to it
;
CLR.L -(SP) ; make room for function result
MOVE.W #CTRec+(2*CTEntrySize),-(SP) ; size of record <C769>
JSR NewHandleWrapper ; get a handle
MOVE.L (SP)+,4(SP) ; return result
RTS ; and return
DisposCTable PROC EXPORT
;-------------------------------------------------------------
;
; PROCEDURE DisposCTable (CTabHandle);
;
; Dispose of the specified color table
;
MOVE.L (SP)+,A1 ; get the return address
MOVE.L (SP)+,d0 ; get the color table <BAL 28Apr89>
beq.s @nil ; ignore if nil <BAL 28Apr89>
move.l d0,a0 ; get handle in a0 <BAL 28Apr89>
_DisposHandle ; dispose of it
@nil
; Commented out, but not totally deleted because this might still be an 040s problem <6>
;;; EclipseNOP ; needed due to flakey 040s <5><6>
JMP (A1) ; and return
GetCTSeed PROC EXPORT
;-------------------------------------------------------------
;
; FUNCTION GetCTSeed (Seed: LongInt);
;
; Returns the next color table seed
; Seed values 0-MinSeed are reserved for resource id's
;
MOVE.L D0,-(SP) ; save work register
MOVE.L TableSeed,D0 ; get low-memory seed
ADDQ.L #1,D0 ; increment seed to next value
BMI.S SeedOK ; => seed value ok
CMP.L #MinSeed,D0 ; is it <= to our min seed value?
BGT.S SeedOK ; => no, seed is ok
MOVE.L #MinSeed,D0 ; else set seed to min value
SeedOK MOVE.L D0,TableSeed ; update low-memory
MOVE.L (SP)+,D0 ; restore work register
MOVE.L TableSeed,4(SP) ; return current value
RTS ; and return
;-------------------------------------------------------------
;
; ROUTINES TO MANIPULATE PIXEL MAPS
;
;-------------------------------------------------------------
OPENPIXMAP PROC EXPORT
IMPORT NewHandleWrapper,NEWCTAB
;-------------------------------------------------------------
;
; FUNCTION OpenPixMap : PixMapHandle;
;
; Create a new, uninitialized pixel map and return a handle to it
;
CLR.L -(SP) ; make room for function result
MOVE.W #pmRec,-(SP) ; size of pixel map record
JSR NewHandleWrapper ; get a handle, leave on stack
CLR.L -(SP) ; make room for function result
JSR NEWCTAB ; go allocate a color table
MOVE.L (SP)+,D0 ; get color table handle
MOVE.L (SP)+,A0 ; get pixel map handle
MOVE.L A0,4(SP) ; return result
MOVE.L (A0),A0 ; get pixel map pointer
MOVE.L D0,pmTable(A0) ; install color table into pixMap
RTS ; and return
NEWPIXMAP PROC EXPORT
IMPORT OPENPIXMAP,INITPIXMAP
;-------------------------------------------------------------
;
; FUNCTION NewPixMap : PixMapHandle;
;
; Create a new, initialized pixel map and return a handle to it
;
CLR.L -(SP) ;make room for a handle
JSR OpenPixMap ;open the pixMap
MOVE.L (SP),8(SP) ;return result
JSR InitPixMap ;initialize it
RTS ;and return
DisposPixMap PROC EXPORT
IMPORT DisposCTable
;-------------------------------------------------------------
;
; PROCEDURE DisposPixMap (PPH: PixMapHandle);
;
; Dispose of a pixel pattern
;
MOVE.L 4(SP),d0 ; get pixMap handle
beq.s @nil ; ignore if nil <BAL 28Apr89>
move.l d0,a1 ; get the handle in A1 <BAL 28Apr89>
MOVE.L (A1),A1 ; get pixMap pointer
MOVE.L pmTable(A1),d0 ; get CLUT handle <BAL 28Apr89>
beq.s @noCLUT ; ignore if nil <BAL 28Apr89>
move.l d0,-(SP) ; push handle to color table <BAL 28Apr89>
_DisposCTable ; and dispose of color table
@noCLUT MOVE.L 4(SP),A0 ; get pixMap handle
_DisposHandle ; and dispose of it
@nil MOVE.L (SP)+,(SP) ; strip parameter
RTS ; and return
InitPixMap PROC EXPORT
;-------------------------------------------------------------
;
; PROCEDURE InitPixMap (PPH: PixMapHandle);
;
; Initialize a pixel map to the device's pixel map.
; Do not set the pixMap's color table.
;
MOVE.L theGDevice,A0 ; get current device handle
MOVE.L (A0),A0 ; point to device record
MOVE.L gdpMap(A0),A0 ; get handle to device's pixMap
MOVE.L (A0),A0 ; point to device's pixMap
MOVE.L 4(SP),A1 ; get pixMap handle
MOVE.L (A1),A1 ; point to the pixMap
MOVE.L pmTable(A1),-(SP) ; save pixMap's cTab handle
MOVE.L A1,-(SP) ; and pixMap pointer
MOVEQ #pmRec/2-1,D0 ; get size of pixMap record
NXTWORD MOVE.W (A0)+,(A1)+ ; copy entire pixMap
DBRA D0,NXTWORD ; one word at a time
MOVE.L (SP)+,A1 ; get the pixMap pointer
MOVE.L (SP)+,pmTable(A1) ; restore pixMap's cTab handle
OR #PMFlag,rowBytes(A1) ; flag that it's a pixMap
if ADDRMODEFLAG then ; <BAL 11Dec88>
clr.w pmVersion(A1) ; assume 24 bit addressing
endif
move.l #$480000,hRes(a1) ;force hres and vres to 72 dpi <KON 22OCT90>
move.l hRes(a1),vRes(a1) ; <KON 22OCT90>
MOVE.L (SP)+,(SP) ; strip parameter
RTS ; and return
CopyPixMap PROC EXPORT
IMPORT COPYHANDLE
;-------------------------------------------------------------
;
; PROCEDURE CopyPixMap (SRCPM,DSTPM: PixMapHandle);
;
; COPY THE SRC PIXMAP'S DATA TO THE DST PIXMAP'S HANDLES
;
PARAMSIZE EQU 8
SRCPM EQU PARAMSIZE
DSTPM EQU SRCPM-4
MOVE.L SRCPM(SP),A0 ;GET HANDLE TO SRC PIXMAP
MOVE.L (A0),A0 ;GET POINTER TO SRC PIXMAP
MOVE.L DSTPM(SP),A1 ;GET HANDLE TO DST PIXMAP
MOVE.L (A1),A1 ;GET POINTER TO DST PIXMAP
MOVEQ #PMTABLE/2-1,D0 ;GET NUMBER OF WORDS TO COPY
NXTWORD MOVE (A0)+,(A1)+ ;COPY A WORD
DBRA D0,NXTWORD ;LOOP UNTIL DONE
MOVE.L 4(A0),4(A1) ;COPY PMRESERVED
MOVE.L (A0),-(SP) ;PUSH SRC COLOR TABLE
MOVE.L (A1),-(SP) ;PUSH DST COLOR TABLE
_COPYHANDLE ;COPY THE COLORTABLE
if ADDRMODEFLAG then ; <BAL 11Dec88>
MOVE.L DSTPM(SP),A1 ;GET HANDLE TO DST PIXMAP
MOVE.L (A1),A1 ;GET POINTER TO DST PIXMAP
clr.w pmVersion(A1) ; assume 24 bit addressing
endif
MOVE.L (SP)+,A0 ;GET RETURN ADDRESS
ADDQ #8,SP ;STRIP PARAMS
JMP (A0) ;AND RETURN
BitsToPix PROC EXPORT
EXPORT ONEBITDATA,COPYPMAP,SHFTTBL
IMPORT FILLONEBIT
;-------------------------------------------------------------
;
; PROCEDURE BitsToPix (XM: XMap; VAR PM: PixMap);
;
; CONVERT THE SPECIFIED BITMAP OR PIXMAP TO A PIXMAP.
; A1 contains the src XMap, A2 points to the dst pixMap.
;
; This routine is called by RGNBLT, STRETCH, DRAWLINE, DRAWARC, DRAWTEXT
;
; The param XM can be a bitMap or a pixMap or a portBits pointer. If it's a pixMap,
; just copy it. If it is a portBits pointer, dereference portPix and copy it.
; If XM is a BitMap and is to the screen, then make the PixMap the same
; as screenbits (because an old application is drawing to the screen). Otherwise
; make the PixMap one bit deep because we are copying to or from the user's
; buffer and can't change its size.
;
; RETURNS D1 = XMAP.BOUNDS.TOPLEFT
; D2 = TRUE IF XMAP IS SCREEN
; CLOBBERS D0,A0-A2
; as seen in QDciPatchROM.a <sm 6/9/92>stb
MOVEQ #0,D2 ;ASSUME NOT SCREEN
MOVE ROWBYTES(A1),D0 ;IS SRC A PIXMAP?
BPL.S DOBITMAP ;=>NO, IT'S A BITMAP
BTST #isCPort,D0 ;IS IT A COLOR GRAFPORT?
BEQ.S NOTPORT ;=>NO, NOT A PORT
; IT'S A PIXMAP, SEE IF IT'S THE SCREEN
MOVE.L BASEADDR(A1),A1 ;GET HANDLE TO PORT'S PIXMAP
MOVE.L (A1),A1 ;GET POINTER TO PORT'S PIXMAP
NOTPORT MOVE.L BOUNDS+TOPLEFT(A1),D1 ;RETURN BOUNDS.TOPLEFT IN D1
; MOVE.L GRAFGLOBALS(A5),A0 ;GET GLOBAL POINTER
; LEA SCREENBITS(A0),A0 ;POINT TO SCREENBITS
; MOVE.L BASEADDR(A0),D0 ;GET SCREENBITS.BASEADDR
MOVE.L ScrnBase,D0 ;GET MainScreen.BASEADDR
CMP.L BASEADDR(A1),D0 ;IS IT TO THE SCREEN?
BNE COPYPMAP ;=>NO, GO COPY IT
BRA.S ISSCREEN ;=>ELSE IT IS THE SCREEN
; IT'S A BITMAP. SEE IF IT'S THE SCREEN
DOBITMAP MOVE.L BOUNDS+TOPLEFT(A1),D1 ;RETURN BOUNDS.TOPLEFT IN D1
; MOVE.L GRAFGLOBALS(A5),A0 ;GET GLOBAL POINTER
; LEA SCREENBITS(A0),A0 ;POINT TO SCREENBITS
; MOVE.L BASEADDR(A0),D0 ;GET SCREENBITS.BASEADDR
MOVE.L ScrnBase,D0 ;GET MainScreen.BASEADDR
CMP.L BASEADDR(A1),D0 ;IS BITMAP BASEADDR SAME ?
BNE.S NOTSCREEN ;=>NO, NOT TO THE SCREEN
; IT'S TO THE SCREEN. COPY THE PIXMAP FROM THE GDEVICE, EXCEPT FOR THE BOUNDS
; WHICH IS TAKEN FROM THE SPECIFIED DEVICE AND OFFSET TO PIXMAP COORDINATES.
ISSCREEN MOVEQ #1,D2 ;SET SCREEN FLAG FOR CALLER
MOVE.L THEGDEVICE,A0 ;GET HANDLE TO THE GDEVICE
MOVE.L (A0),A0 ;GET POINTER TO THE GDEVICE
btst #ext32Device,gdFlags(a0) ;does it need 32-bit addressing?
beq.s @not32Bit
moveq #-1,d2 ;is screen and needs 32-bit addressing
@not32Bit ;
MOVE.L GDPMAP(A0),A0 ;GET HANDLE TO ITS PIXMAP
MOVE.L (A0),A0 ;GET POINTER TO GDEV'S PIXMAP
MOVE.L (A0)+,(A2)+ ;COPY BASEADDR FROM GDEV
MOVE (A0)+,(A2)+ ;COPY ROWBYTES FROM GDEV
; IF EMPTY RECTANGLE, THEN DON'T OFFSET TO MAKE PRINTING WORK <27May87 EHB>
CMP.L BOUNDS+BOTRIGHT(A1),D1 ;TOPLEFT==BOTTOMRIGHT?? <27May87 EHB>
BNE.S @NOHACK ;IF NOT, GO ON AS USUAL <27May87 EHB>
MOVE.L D1,(A2)+ ;JAM INPUT TOPLEFT <27May87 EHB>
MOVE.L D1,(A2)+ ;JAM INPUT BOTTOMRIGHT <27May87 EHB>
ADDQ.L #8,A0 ;SKIP OVER PIXMAP.BOUNDS <27May87 EHB>
BRA.S @DONEHACK ;SKIP THE MULTI-SCREEN WORLD <27May87 EHB>
@NOHACK MOVE.L (A0)+,D0 ;GET PIXMAP.BOUNDS.TOPLEFT <27May87 EHB>
ADD D1,D0 ;ADJUST FOR DEVICE.LEFT <27May87 EHB>
SWAP D0 ;GET PIXMAP.TOP <27May87 EHB>
SWAP D1 ;GET DEVICE.TOP <27May87 EHB>
ADD D1,D0 ;ADJUST FOR DEVICE.TOP <27May87 EHB>
SWAP D0 ;GET TOPLEFT <27May87 EHB>
MOVE.L D0,(A2)+ ;SAVE TOPLEFT <27May87 EHB>
MOVE.L (A0)+,D0 ;GET PIXMAP.BOUNDS.BOTRIGHT <27May87 EHB>
SWAP D0 ;GET PIXMAP.BOTTOM <27May87 EHB>
ADD D1,D0 ;ADJUST FOR DEVICE.TOP <27May87 EHB>
SWAP D0 ;GET PIXMAP.RIGHT <27May87 EHB>
SWAP D1 ;GET DEVICE.LEFT <27May87 EHB>
ADD D1,D0 ;ADJUST FOR DEVICE.LEFT <27May87 EHB>
MOVE.L D0,(A2)+ ;SAVE TOPLEFT <27May87 EHB>
;D1 = DEVICE.BOUNDS.TOPLEFT <27May87 EHB>
@DONEHACK ;FINISH UP THE TWO CASES <27May87 EHB>
MOVE.L A0,A1 ;GET GDEV.PMVERSION IN A1
BRA.S COPYREST ;=>COPY REST OF DATA AND EXIT
; IT'S A ONE BIT PORT THAT'S NOT THE SCREEN. COPY BASE,ROWBYTES,BOUNDS FROM SRC.
; COPY THE REST OF THE PIXMAP FROM ONE BIT DATA
NOTSCREEN LEA ONEBITDATA,A0 ;GET DATA IF NOT THE SCREEN
PEA PUTONETABLE ;RTS TO THIS ROUTINE
MOVE.L BASEADDR(A1),d0 ;COPY BASEADDR FROM SRC @@@@ BAL 08Apr88
_rTranslate24To32 ;mask off high bits @@@@ BAL 08Apr88
move.l d0,(a2)+ ;put it to the pixmap @@@@ BAL 08Apr88
EXG A0,A1 ;GET SRC IN A0; DATA IN A1
ADD #PMVERSION,A1 ;START COPYING DATA AT PMVERSION
ADD #ROWBYTES,A0 ;START COPYING DATA AT ROWBYTES
MOVE (A0)+,D0 ;COPY ROWBYTES FROM SRC
AND #nuRBMask,D0 ;CLEAR FLAG BITS
MULU PIXELSIZE-PMVERSION(A1),D0 ;GET ROWBYTES * DEPTH
OR #$8000,D0 ;SET PIXMAP FLAG FROM SRC
MOVE D0,(A2)+ ;AND SET ROWBYTES
MOVE.L (A0)+,(A2)+ ;COPY BOUNDS FROM SRC
MOVE.L (A0)+,(A2)+
BRA.S COPYREST ;=>COPY REST OF DATA AND EXIT
; IF IT'S A ONE BIT PORT THAT'S NOT THE SCREEN, MAKE A ONE-BIT COLOR TABLE
; FOR THE PIXMAP. FAKE A MASTER POINTER RIGHT AFTER THE PIXMAP, FOLLOWED
; BY THE COLOR TABLE.
PUTONETABLE MOVE.L A2,-8(A2) ;INSTALL PMTABLE "HANDLE"
LEA 4(A2),A0 ;POINT TO TABLE
MOVE.L A0,(A2) ;INSTALL PMTABLE "MASTER POINTER"
MOVE.L (SP)+,A1 ;GET RETURN ADDRESS
JMP FILLONEBIT ;INIT THE TABLE USING PARTIAL ROUTINE
;WHICH EXITS WITH JMP (A1)
SpecialBase
move.l (a1)+,a0 ;get baseAddr
btst #1,d0 ;is this a handle?
beq.s @notHand ;no, don't deref
move.l (a0),a0 ;yes, dereference it
@notHand btst #2,d0 ;32-bit clean address?
exg a0,d0 ;get address in d0, don't change cc's
beq.s base24 ;no flag -> 24-bit addressing
moveq #-1,d2 ;
clr.w d2 ;set needs 32-bit addressing flag, not screen
bra.s base32 ;flag set-> 32-bit addressing
; COPY THE SRC TO THE DST
COPYPMAP
move.w pmVersion(a1),d0 ;get baseAddr flags
bne.s SpecialBase ;if flags set go decide
MOVE.L (A1)+,d0 ;COPY BASEADDR
base24 _rTranslate24To32 ;map address in D0
base32 move.l d0,(a2)+ ;write it out
MOVE (A1)+,(A2)+ ;COPY ROWBYTES
MOVE.L (A1)+,(A2)+ ;COPY BOUNDS
MOVE.L (A1)+,(A2)+
COPYREST MOVE.L (A1)+,(A2)+ ;COPY VERSION, PACKTYPE
MOVE.L (A1)+,(A2)+ ;COPY PACKSIZE
MOVE.L (A1)+,(A2)+ ;COPY HRES
MOVE.L (A1)+,(A2)+ ;COPY VRES
MOVE.L (A1)+,(A2)+ ;COPY PIXELTYPE, PIXELSIZE
MOVE.L (A1)+,(A2)+ ;COPY CMPCOUNT, CMPSIZE
MOVE.L (A1)+,(A2)+ ;COPY PLANEBYTES
MOVE.L (A1)+,(A2)+ ;COPY PMTABLE
MOVE.L (A1)+,(A2)+ ;COPY RESERVED
RTS ;AND RETURN
; HERE IS THE INFO THAT GOES INTO A ONE BIT DEEP PIXMAP
ONEBITDATA
DC.L 0 ;PBASEADDR
DC.W 0 ;PROWBYTES
DC.L 0,0 ;PBOUNDS
DC.W PIXVERSION ;PMVERSION
DC.W 0 ;PACKTYPE
DC.L 0 ;PACKSIZE
DC.W 72 ;HRES.Hi
DC.W 0 ;HRES.Lo
DC.W 72 ;VRES.Hi
DC.W 0 ;VRES.Lo
DC.W 0 ;PIXELTYPE
DC.W 1 ;PIXELSIZE
DC.W 1 ;CMPCOUNT
DC.W 1 ;CMPSIZE
DC.L 0 ;PLANEBYTES
DC.L 0 ;PMTABLE
DC.L 0 ;PMRESERVED
SHFTTBL DC.B 0,0,1,0,2,0,0,0
DC.B 3,0,0,0,0,0,0,0
DC.B 4,0,0,0,0,0,0,0
DC.B 0,0,0,0,0,0,0,0,5
SetCPixel PROC EXPORT
;---------------------------------------------------------------
;
; PROCEDURE SetCPixel(h,v: INTEGER; pixColor: RGBColor);
;
; PLOTS A SINGLE PIXEL AT THE SPECIFIED COORDINATE.
; TAKES CARE OF CLIPPING, HIDING THE CURSOR, AND SAVING TO PICTURES.
; NOTE: THIS ROUTINE IS EXTREMELY SLOW!!
;
; A6 OFFSETS OF PARAMS AFTER LINK:
;
PARAMSIZE EQU 8
HPos EQU PARAMSIZE+8-2 ;horizontal position
VPos EQU HPos-2 ;vertical position
pixColor EQU VPos-4 ;pointer to rgb color
PState EQU -psRec ;saved pen state
FColor EQU pState-6 ;saved foreColor
VARSIZE EQU FColor ;TOTAL SIZE OF LOCALS
; SAVE CURRENT STATE
LINK A6,#VARSIZE ;ALLOCATE STACK FRAME
PEA PState(A6) ;push pen state record
_GetPenState ;save the pen state
PEA FColor(A6) ;push foreground color
_GetForeColor ;save the foreground color
; PLOT THE PIXEL
MOVE.L pixColor(A6),-(SP) ;push pointer to new color
_RGBForeColor ;set the color
_PenNormal ;set the pen to normal
MOVE.L vPos(A6),-(SP) ;push the hpos, vpos
_MoveTo ;move the pen there
CLR.L -(SP) ;dh:=0; dv:=0;
_Line ;draw a one dot line
; RESTORE PRIOR STATE AND RETURN
PEA FColor(A6) ;push foreground color
_RGBForeColor ;restore the foreground color
PEA PState(A6) ;push pen state record
_SetPenState ;restore the pen state
UNLINK PARAMSIZE,'SETCPIXE'
ENDPROC
HiliteColor PROC EXPORT
IMPORT setGrafVarsCommon
;-------------------------------------------------------------
;
; PROCEDURE HiliteColor (color: rgbColor);
;
; HiliteColor sets the second six bytes of the grafVars handle to the color
; supplied. HiliteColor allows a grafCPort to have a hilite color different
; from the system default contained in parameter RAM and in low memory.
; If thePort is an old grafPort, it does nothing.
MOVEQ #RGBHiliteColor,D0 ;hilite color is 6 bytes into vars
BRA.S setGrafVarsCommon
NOP ; silence the assembler <12>
OpColor PROC EXPORT
EXPORT setGrafVarsCommon
;-------------------------------------------------------------
;
; PROCEDURE OpColor (color: rgbColor);
;
; OpColor sets the first six bytes of the grafVars handle to the color
; supplied. OpColor is required to set up interesting rules for
; Add with pin, subtract with pin, and blend (average) drawing modes.
; If thePort is an old grafPort, it does nothing.
MOVEQ #RGBOpColor,D0 ;op color is 0 bytes into vars
setGrafVarsCommon
MOVE.L (SP)+,D2 ;strip the return address
MOVE.L (SP)+,A1 ;pointer to the colors
MOVE.L ([grafGlobals,A5],thePort),A0 ; get current grafPort
TST portVersion(A0) ;is it a color port?
BPL.S @done ;no, just exit
MOVE.L ([grafVars,A0]),A0 ;get op field pointer
ADD D0,A0 ;advance to proper field
MOVE.L (A1)+,(A0)+
MOVE (A1),(A0)
@done MOVE.L D2,A0 ;get the return address
JMP (A0) ;and go home
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