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LCursor.a
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LCursor.a
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.INCLUDE GRAFTYPES.TEXT
;------------------------------------------------------------------
;
; --> LCURSOR.TEXT
;
; Links to MacIntosh Cursor routines.
;
; System Graphic Jump Vectors:
;
; Long pointers to system routine entry points.
;
GRAFBEGIN .EQU $800 ;GRAF GLOBAL AREA
JHIDECURSOR .EQU GRAFBEGIN
JSHOWCURSOR .EQU JHIDECURSOR+4
JSHIELDCURSOR .EQU JSHOWCURSOR+4
JSCRNADDR .EQU JSHIELDCURSOR+4 ;not used (see _GetScrnBits)
JSCRNSIZE .EQU JSCRNADDR+4 ;not used (see _GetScrnBits)
JINITCRSR .EQU JSCRNSIZE+4
JSETCRSR .EQU JINITCRSR+4
JCRSROBSCURE .EQU JSETCRSR+4
.PROC InitCursor,0
.REF SetCursor
;----------------------------------------------------------
;
; PROCEDURE InitCursor;
;
MOVE.L GRAFGLOBALS(A5),A0 ;POINT TO QUICKDRAW GLOBALS
PEA ARROW(A0) ;PUSH ADDR OF ARROW
JSR SETCURSOR ;INSTALL ARROW CURSOR
MOVE.L JInitCrsr,A0 ;get lo mem pointer
JMP (A0) ;and call it
.PROC SetCursor,1
;---------------------------------------------------
;
; PROCEDURE SetCursor(crsr: Cursor);
;
MOVE.L 4(SP),A0 ;Point to Cursor
MOVE.L HOTSPOT+V(A0),-(SP) ;PUSH HOTX & HOTY
MOVE #16,-(SP) ;HEIGHT:=16
PEA DATA(A0) ;PUSH ADDR OF DATA
PEA MASK(A0) ;PUSH ADDR OF MASK
MOVE.L JSetCrsr,A0 ;get lo mem vector
JSR (A0) ;call vector
MOVE.L (SP)+,(SP) ;strip param
RTS ;and return
.PROC HideCursor,0
;---------------------------------------------------------
;
; PROCEDURE HideCursor;
;
; ALL REGS PRESERVED.
;
MOVE.L JHideCursor,-(SP) ;get lo mem vector
RTS ;and call it
.PROC ShowCursor,0
;---------------------------------------------------------
;
; PROCEDURE ShowCursor;
;
; ALL REGS PRESERVED.
;
MOVE.L JShowCursor,-(SP) ;get lo mem vector
RTS ;and call it
.PROC ShieldCursor,2
;---------------------------------------------------------
;
; PROCEDURE ShieldCursor(shieldRect: Rect; offset: Point);
;
; ALL REGS PRESERVED.
;
MOVEM.L D0-D3/A0-A1,-(SP) ;SAVE REGS
MOVE.L 32(SP),A0 ;POINT TO SHIELDRECT
MOVEM.W (A0)+,D0/D1/D2/D3 ;GET TOP ... RIGHT
LEA 28(SP),A1
SUB (A1),D0 ;TOP - OFFSET.V
SUB (A1)+,D2 ;BOTTOM - OFFSET.V
SUB (A1),D1 ;LEFT - OFFSET.H
SUB (A1),D3 ;RIGHT - OFFSET.H
MOVE D1,-(SP) ;PUSH GLOBAL LEFT
MOVE D0,-(SP) ;PUSH GLOBAL TOP
MOVE D3,-(SP) ;PUSH GLOBAL RIGHT
MOVE D2,-(SP) ;PUSH GLOBAL BOTTOM
MOVE.L JShieldCursor,A0 ;get lo mem vector
JSR (A0) ;and call it
MOVEM.L (SP)+,D0-D3/A0-A1 ;RESTORE REGS
MOVE.L (SP)+,(SP)
MOVE.L (SP)+,(SP) ;STRIP 8 BYTES
RTS ;AND RETURN
.PROC ObscureCursor,0
;---------------------------------------------------------
;
; PROCEDURE ObscureCursor;
;
; Hide the cursor image until the next time the mouse moves.
;
MOVE.L JCrsrObscure,A0 ;get lo mem vector
JMP (A0) ;and call it
.END