; ; File: Arcs.a ; ; Copyright: © 1981-1992 by Apple Computer, Inc., all rights reserved. ; ; Change History (most recent first): ; ; 6/10/92 stb stb Note that StdArc has the fix from QDciPatchROM.a ; <¥1.4> 5/29/89 BAL Blasting in 32-Bit QuickDraw version 1.0 Final ; <¥1.3> 4/12/89 BAL Blasting in 32-Bit QuickDraw 1.0B1 ; 1/8/89 BAL Vectorized CheckPic ; 9/5/86 EHB Added FillCArc ; 8/16/86 EHB In FillArc, call SetFillPat for color patterns ; ; BLANKS ON STRING ASIS ;----------------------------------------------------------- ; ; ; * ***** *** *** ; * * * * * * * * ; * * * * * * ; * * ***** * *** ; ***** * * * * ; * * * * * * * * ; * * * * *** *** ; ; Procedures for drawing Arcs: ; StdArc PROC EXPORT IMPORT PutPicVerb,PutPicWord,PutPicRect IMPORT PushVerb,DrawArc,StdDevLoop ;--------------------------------------------------------------- ; ; PROCEDURE StdArc(verb: GrafVerb; r: Rect; startAngle,arcAngle: INTEGER); ; ; A6 OFFSETS OF PARAMS AFTER LINK: ; ; contains fix as seen in QDciPatchROM.a stb PARAMSIZE EQU 10 VERB EQU PARAMSIZE+8-2 ;GRAFVERB RECT EQU VERB-4 ;LONG, ADDR OF RECT STARTANG EQU RECT-2 ;WORD ARCANG EQU STARTANG-2 ;WORD OVWD EQU -2 ;WORD OVHT EQU OVWD-2 ;WORD VARSIZE EQU OVHT ;TOTAL BYTES OF LOCALS LINK A6,#VARSIZE ;ALLOCATE STACK FRAME MOVEM.L D4/D7/A3-A4,-(SP) ;SAVE REGS MOVE.B VERB(A6),D7 ;GET VERB _CheckPic ;SET UP A4,A3 AND CHECK PICSAVE BLE.S NOTPIC ;BRANCH IF NOT PICSAVE MOVE.B D7,-(SP) bsr.l PutPicVerb ;PUT ADDIONAL PARAMS TO THEPIC MOVEQ #$60,D0 ;PUT ARCNOUN IN HI NIBBLE ADD D7,D0 ;PUT VERB IN LO NIBBLE MOVE.B D0,-(SP) ;PUSH OPCODE MOVE.L RECT(A6),-(SP) ;PUSH ADDR OF RECT bsr.l PutPicRect ;PUT OPCODE AND RECTANGLE MOVE STARTANG(A6),-(SP) bsr.l PutPicWord ;PUT STARTANGLE MOVE ARCANG(A6),-(SP) bsr.l PutPicWord ;PUT ARCANGLE ; CALL STANDARD LOOP TO DRAW TO ALL DEVICES NOTPIC PEA StdDraw ;PUSH ADDRESS OF DRAW ROUTINE PEA GetRect ;PUSH ADDRESS OF RECT ROUTINE _StdDevLoop ;DRAW TO ALL DEVICES MOVEM.L (SP)+,D4/D7/A3-A4 ;RESTORE REGS UNLINK PARAMSIZE,'STDARC ' ;--------------------------------------------------------------- ; ; PROCEDURE GetRect(VAR theRect: rect); ; ; RETURN THE OBJECT'S RECTANGLE ; GetRect MOVE.L (SP)+,D0 ;GET RETURN ADDRESS MOVE.L (SP)+,A1 ;GET DST RECT MOVE.L RECT(A6),A0 ;GET SRC RECT MOVE.L (A0)+,(A1)+ ;SET TOPLEFT MOVE.L (A0),(A1) ;SET BOTRIGHT MOVE.L D0,A0 ;GET RETURN ADDRESS JMP (A0) ;AND RETURN ;--------------------------------------------------------------- ; ; PROCEDURE StdDraw; ; ; DRAW THE OBJECT ; StdDraw MOVE.L RECT(A6),A0 ;POINT TO RECT MOVE RIGHT(A0),D0 SUB LEFT(A0),D0 MOVE D0,OVWD(A6) ;OVWD := R.RIGHT - R.LEFT MOVE BOTTOM(A0),D0 SUB TOP(A0),D0 MOVE D0,OVHT(A6) ;OVHT := R.BOTTOM - R.TOP MOVE.L A0,-(SP) ;PUSH ADDR OF RECT CLR.B -(SP) ;PUSH HOLLOW = FALSE TST.B D7 ;IS VERB FRAME ? BNE.S DOIT ;NO, CONTINUE ; ; Currently, FrameArc does not put inversion points to theRgn. ; If this changes, add test and call to PutArc here. ; MOVE.B #1,(SP) ;REPLACE, PUSH HOLLOW = TRUE DOIT MOVE.L OVHT(A6),-(SP) ;PUSH OVWD,OVHT _PushVerb ;PUSH MODE AND PATTERN MOVE STARTANG(A6),-(SP) ;PUSH STARTANGLE MOVE ARCANG(A6),-(SP) ;PUSH ARCANGLE ; DrawArc(r,hollow,ovWd,ovHt,mode,pat,startAng,arcAng); _DrawArc RTS FrameArc PROC EXPORT EXPORT CallArc,PaintArc,EraseArc,InvertArc,FillArc,FillCArc IMPORT SETFILLPAT ;----------------------------------------------------- ; ; PROCEDURE FrameArc(* r: Rect; startAngle,arcAngle: INTEGER *); ; MOVEQ #FRAME,D0 ;VERB = FRAME BRA.S CallArc ;SHARE COMMON CODE ;----------------------------------------------------- ; ; PROCEDURE PaintArc(* r: Rect; startAngle,arcAngle: INTEGER *); ; PaintArc MOVEQ #PAINT,D0 ;VERB = PAINT BRA.S CallArc ;SHARE COMMON CODE ;-------------------------------------------------------- ; ; PROCEDURE EraseArc(* r: Rect; startAngle,arcAngle: INTEGER *); ; EraseArc MOVEQ #ERASE,D0 ;VERB = ERASE BRA.S CallArc ;SHARE COMMON CODE ;-------------------------------------------------------- ; ; PROCEDURE InvertArc(* r: Rect; startAngle,arcAngle: INTEGER *); ; InvertArc MOVEQ #INVERT,D0 ;VERB = INVERT BRA.S CallArc ;SHARE COMMON CODE ;-------------------------------------------------------- ; ; PROCEDURE FillArc(* r: Rect; startAngle,arcAngle: INTEGER; pat: Pattern *); ; FillArc MOVEQ #0,D0 ;FLAG = FillArc BRA.S SHARE ; => USE COMMON CODE ;---------------------------------------------------------- ; ; PROCEDURE FillCArc(r: Rect; startAngle,arcAngle: INTEGER; PPH: PixPatHandle); ; FillCArc MOVEQ #1,D0 ;FLAG = FillCArc SHARE MOVE.L (SP)+,A0 ;POP RETURN ADDR MOVE.L (SP)+,A1 ;POP ADDR OF PATTERN MOVE.L A0,-(SP) ;PUT RETURN ADDR BACK MOVE.L A1,-(SP) ;PUT ADDR OF PATTERN BACK _SETFILLPAT ;FILLPAT := PAT MOVEQ #FILL,D0 ;VERB = FILL ; BRA.S CallArc ;SHARE COMMON CODE ;--------------------------------------------------------------- ; ; PROCEDURE CallArc(r: Rect; startAngle,arcAngle: INTEGER); ; ; code shared by FrameArc, PaintArc, EraseArc, InvertArc, and FillArc. ; enter with verb in D0. ; CallArc MOVE.L (SP)+,A0 ;POP RETURN ADDR MOVE.L (SP)+,D1 ;POP BOTH ANGLES MOVE.L (SP)+,A1 ;POP ADDR OF RECT MOVE.B D0,-(SP) ;PUSH VERB MOVE.L A1,-(SP) ;PUSH ADDR OF RECT MOVE.L D1,-(SP) ;PUSH BOTH ANGLES MOVE.L A0,-(SP) ;PUSH RETURN ADDR MOVE.L GRAFGLOBALS(A5),A0 ;POINT TO LISAGRAF GLOBALS MOVE.L THEPORT(A0),A0 ;GET CURRENT GRAFPORT MOVE.L GRAFPROCS(A0),D0 ;IS GRAFPROCS NIL ? MOVE.L JSTDARC,A0 ;get piece of trap table BEQ.S USESTD ;YES, USE STD PROC MOVE.L D0,A0 MOVE.L ARCPROC(A0),A0 ;NO, GET PROC PTR USESTD JMP (A0) ;GO TO IT ENDPROC