NEW
  AUTO 3,1
				.LIST OFF
*--------------------------------------
* TBOX.New hParent,X1,Y1,W,H,F,hBuf,BufSize		9
*--------------------------------------
TBOX.New		jsr OBJ.Create			A = Class
				bcs .9

				ldy #S.TBOX.BufSize
				jsr OBJ.PullWordY

				>PULLA
				ldy #S.TBOX.hBuf
				sta (ZPObjPtr),y

				>PULLA
				ora #S.OBJ.F.bCursor
				ldy #S.OBJ.F
				sta (ZPObjPtr),y

				jsr OBJ.PullHW

				jsr OBJ.PullY1X1hParent

				jmp OBJ.Insert

.9				>POP 9

				rts
*--------------------------------------
TBOX.Destroy	clc
				rts
*--------------------------------------
TBOX.Run		ldy #S.OBJ.S
				lda (ZPObjPtr),y
				bpl TBOX.RUN.Ignore

				lda (pStack)			Event

				cmp #C.SPACE
				bcs .2

				asl
				tax
				jsr .1

				bcc TBOX.RUN.7

				rts

.1				jmp (J.TBOX.RUN,x)

.2				cmp #C.DEL
				bne TBOX.RUN.CR

				jsr TBOX.GetBuf

				jsr TBOX.Delete1

				bra TBOX.RUN.7
*--------------------------------------
TBOX.RUN.Ignore	lda #0
				sec
				rts
*--------------------------------------
TBOX.RUN.CR		jsr TBOX.GetBuf

				jsr TBOX.ToBuf1
				bcs TBOX.RUN.8			Buffer full

				jsr TBOX.RUN.FS1

TBOX.RUN.7		ldy #1					hObj
				lda (pStack),y
				>PUSHA

				jsr OBJ.Draw.Body
				inc pStack

TBOX.RUN.8		clc
				rts
*--------------------------------------
TBOX.RUN.SelBegin
				ldy #S.TBOX.BufPtr
				lda (ZPObjPtr),y
				tax
				iny
				lda (ZPObjPtr),y
				
				ldy #S.TBOX.SelBegin+1
				sta (ZPObjPtr),y
				txa
				dey
				sta (ZPObjPtr),y
				
				bra TBOX.RUN.Sel
*--------------------------------------
TBOX.RUN.SelEnd	ldy #S.TBOX.BufPtr
				lda (ZPObjPtr),y
				tax
				iny
				lda (ZPObjPtr),y
				
				ldy #S.TBOX.SelEnd+1
				sta (ZPObjPtr),y
				txa
				dey
				sta (ZPObjPtr),y

TBOX.RUN.Sel	ldy #S.TBOX.SelEnd
				lda (ZPObjPtr),y
				ldy #S.TBOX.SelBegin
				cmp (ZPObjPtr),y

				ldy #S.TBOX.SelEnd+1
				lda (ZPObjPtr),y
				ldy #S.TBOX.SelBegin+1
				sbc (ZPObjPtr),y
				
				ldy #S.TBOX.bSelect
				lda #0
				ror
				pha
				eor (ZPObjPtr),y
				bpl .1
				
				pla
				sta (ZPObjPtr),y
				jmp TBOX.SetViewPort
				
.1				pla
				clc
				rts
*--------------------------------------
TBOX.RUN.BS		ldy #S.TBOX.BufPtr+1
				lda (ZPObjPtr),y
				dey
				ora (ZPObjPtr),y
				beq .9

				jsr OBJ.DecWordAtY

				jsr TBOX.GetBuf

				lda (ZPPtr2)
				cmp #C.CR
				beq .1

				ldy #S.TBOX.DocX
				jsr OBJ.DecWordAtY
				jmp TBOX.SetViewPort

.1				ldy #S.TBOX.DocY
				jsr OBJ.DecWordAtY

				jmp TBOX.RUN.EOL

.9				sec
				rts
*--------------------------------------
TBOX.RUN.LF		jsr TBOX.GetBuf

				jsr TBOX.GetCurlineInAX
				inx
				bne .1

				inc

.1				jsr TBOX.GetLineAX
				bcs TBOX.RUN.VT.8

				ldy #S.TBOX.DocY
				jsr OBJ.IncWordAtY
				bra TBOX.RUN.VT1
*--------------------------------------
TBOX.RUN.VT		jsr TBOX.GetBuf

				ldy #S.TBOX.DocY+1
				lda (ZPObjPtr),y
				dey
				ora (ZPObjPtr),y
				beq TBOX.RUN.VT.8

				jsr OBJ.DecWordAtY

TBOX.RUN.VT1	jsr TBOX.GetCurlineInAX
				jsr TBOX.GetLineAX

				jsr TBOX.GetLineLenInAXC
				sta TempW
				stx TempW+1

				ldy #S.TBOX.DocX
				cmp (ZPObjPtr),y

				txa
				iny
				sbc (ZPObjPtr),y
				bcs .1

				lda TempW+1
				sta (ZPObjPtr),y
				dey
				lda TempW
				sta (ZPObjPtr),y

.1				ldy #S.TBOX.DocX

				lda	TempC
				clc
				adc (ZPObjPtr),y
				tax
				iny
				lda TempC+1
				adc (ZPObjPtr),y

				ldy #S.TBOX.BufPtr+1
				sta (ZPObjPtr),y
				dey
				txa
				sta (ZPObjPtr),y

				jmp TBOX.SetViewPort

TBOX.RUN.VT.8	clc
				rts
*--------------------------------------
TBOX.RUN.FS		jsr TBOX.GetBuf

TBOX.RUN.FS1	lda (ZPPtr2)
				beq .8

				tax

				ldy #S.TBOX.BufPtr
				jsr OBJ.IncWordAtY

				cpx #C.CR
				beq .1

				ldy #S.TBOX.DocX
				bra .7

.1				lda #0
				ldy #S.TBOX.DocX
				sta (ZPObjPtr),y
				iny
				sta (ZPObjPtr),y

				ldy #S.TBOX.DocY

.7				jsr OBJ.IncWordAtY

				jsr TBOX.SetViewPort

.8				clc
				rts
*--------------------------------------
TBOX.RUN.SOL	lda #0
				ldy #S.TBOX.DocX
				sta (ZPObjPtr),y
				iny
				sta (ZPObjPtr),y
				
				jsr TBOX.GetCurlineInAX
				jsr TBOX.GetLineAX
				
				ldy #S.TBOX.BufPtr
				lda TempC				BufPtr at SOL
				sta (ZPObjPtr),y
				iny
				lda TempC+1
				sta (ZPObjPtr),y
				
				jmp TBOX.SetViewPort
*--------------------------------------
TBOX.RUN.EOL	jsr TBOX.GetCurlineInAX
				jsr TBOX.GetLineAX
				jsr TBOX.GetLineLenInAXC

				pha

				ldy #S.TBOX.BufPtr
				clc
				adc TempC				BufPtr at SOL
				sta (ZPObjPtr),y
				iny
				txa
				adc TempC+1
				sta (ZPObjPtr),y

				pla

				ldy #S.TBOX.DocX
				sta (ZPObjPtr),y
				iny
				txa
				sta (ZPObjPtr),y

				jmp TBOX.SetViewPort
*--------------------------------------
TBOX.RUN.PGUP	clc
				rts
*--------------------------------------
TBOX.RUN.PGDN	clc
				rts
*--------------------------------------
TBOX.RUN.Home	ldy #S.TBOX.DocX

				ldx #4					DocX + DocY

				lda #0

.1				sta (ZPObjPtr),y
				iny
				dex
				bne .1

				ldy #S.TBOX.BufPtr
				sta (ZPObjPtr),y
				iny
				sta (ZPObjPtr),y

				jmp TBOX.SetViewPort
*--------------------------------------
TBOX.RUN.EraseCL
				jsr TBOX.GetCurlineInAX
				jsr TBOX.GetLineAX
				jsr TBOX.GetLineLenInAXC
				jsr TBOX.DeleteAXC
				
				jmp TBOX.RUN.VT1
*--------------------------------------
TBOX.RUN.EOF	lda #$ff
				tax
				jsr TBOX.GetLineAX

				ldy #S.TBOX.DocY
				lda TempI
				sta (ZPObjPtr),y
				tax
				
				lda TempI+1
				iny 
				sta (ZPObjPtr),y

				jsr TBOX.GetLineAX
				jsr TBOX.GetLineLenInAXC

				ldy #S.TBOX.DocX
				sta (ZPObjPtr),y
				iny
				txa
				sta (ZPObjPtr),y

				ldy #S.TBOX.BufCnt+1
				lda (ZPObjPtr),y
				tax
				dey
				lda (ZPObjPtr),y

				ldy #S.TBOX.BufPtr
				sta (ZPObjPtr),y
				iny
				txa
				sta (ZPObjPtr),y 

				jmp TBOX.SetViewPort
*--------------------------------------
TBOX.Draw		ldy #S.TBOX.VScroll
				lda (ZPObjPtr),y
				clc
				adc (pStack)			Relative Y
				tax

				iny
				lda (ZPObjPtr),y
				adc #0

				jsr TBOX.GetLineAX
				bcs .5

				ldy #S.TBOX.HScroll
				lda (ZPObjPtr),y

				tax
				beq .12

.1				jsr TBOX.GetLineChar
				beq .12

				cmp #C.CR
				beq .12

				dex
				bne .1

.12				ldy #S.OBJ.InnerW
				lda (ZPObjPtr),y
				tax

.2				jsr TBOX.GetLineChar
				beq .3

				cmp #C.CR
				beq .3

				jsr LB.COut
				dex
				bne .2

.3				txa
				bne .6
				
				clc
				rts

.5				ldy #S.OBJ.InnerW
				lda (ZPObjPtr),y
				tax

.6				lda #C.SPACE

.7				jsr LB.COut
				dex
				bne .7

.8				
*--------------------------------------
TBOX.Activate	
*--------------------------------------
TBOX.Deactivate	clc
				rts
*--------------------------------------
TBOX.GetBuf		ldy #S.TBOX.hBuf
				lda (ZPObjPtr),y
				>SYSCALL2 GetMemPtr
				>STYA ZPPtr1

				pha
				tya
				ldy #S.TBOX.BufPtr
				clc
				adc (ZPObjPtr),y
				sta ZPPtr2
				pla
				iny
				adc (ZPObjPtr),y
				sta ZPPtr2+1

				rts
*--------------------------------------
TBOX.GetCurlineInAX
				ldy #S.TBOX.DocY
				lda (ZPObjPtr),y
				tax

				iny
				lda (ZPObjPtr),y
				rts
*--------------------------------------
TBOX.GetLineAX	stx TempW
				sta TempW+1				Req Line Num

				ldy #S.TBOX.hBuf
				lda (ZPObjPtr),y
				>SYSCALL2 GetMemPtr
				>STYA ZPPtr1

				stz TempI				Current Line Num
				stz TempI+1

				stz TempC				Buffer Ofs
				stz TempC+1

.1				lda TempI
				eor TempW
				bne .2

				lda TempI+1
				eor TempW+1
				beq .8

.2				lda (ZPPtr1)
				beq .9

				jsr TBOX.GetLineLenInAXC
				bcc .9
				
				php
				pha

				adc TempC
				sta TempC
				txa
				adc TempC+1
				sta TempC+1

				pla
				plp

				adc ZPPtr1
				sta ZPPtr1
				txa
				adc ZPPtr1+1
				sta ZPPtr1+1

				inc TempI
				bne .1

				inc TempI+1
				bra .1

.9				sec
				rts

.8				clc
				rts
*--------------------------------------
TBOX.GetLineChar
				ldy #S.TBOX.bSelect
				lda (ZPObjPtr),y
				bpl .5



.5				clc
				.HS B0					BCS

.6				sec

				lda (ZPPtr1)
				beq .8
				
				inc ZPPtr1
				bne .7
				
				inc ZPPtr1+1
				
.7				inc TempC
				bne .8
				
				inc TempC+1
				
.8				rts				
*--------------------------------------
TBOX.GetLineLenInAXC
				lda ZPPtr1+1
				pha

				clc

				ldy #0
				ldx #0

.1				lda (ZPPtr1),y
				beq .8

				eor #C.CR
				beq .7

				iny
				bne .1

				inx
				bra .1

.7				sec						to skip CR

.8				pla
				sta ZPPtr1+1

				tya						AX = len, CS if CR ended

				rts
*--------------------------------------
TBOX.ToBuf1		ldy #S.TBOX.BufCnt
				lda (ZPObjPtr),y
				ldy #S.TBOX.BufSize
				cmp (ZPObjPtr),y

				ldy #S.TBOX.BufCnt+1
				lda (ZPObjPtr),y
				ldy #S.TBOX.BufSize+1
				sbc (ZPObjPtr),y
				bcs .9

				dey						ldy #S.TBOX.BufCnt

				jsr OBJ.IncWordAtY

.1				jsr TBOX.GetBuf

				jsr TBOX.Insert1

				lda (pStack)
				sta (ZPPtr2)

.8				clc

.9				rts
*--------------------------------------
TBOX.Insert1	lda #1
				ldx #0

TBOX.InsertAX	clc
				adc ZPPtr2
				sta ZPPtr3
				txa
				adc ZPPtr2+1
				sta ZPPtr3+1

				ldy #0
				ldx #0

.1				lda (ZPPtr2),y
				beq .4

				iny
				bne .1

				inx
				inc ZPPtr2+1
				inc ZPPtr3+1
				bra .1

.2				dex

.3				dey

				lda (ZPPtr2),y

.4				sta (ZPPtr3),y
				tya
				bne .3

				txa
				bne .2

.8				rts
*--------------------------------------
TBOX.Delete1	lda #1
				ldx #0
*--------------------------------------
TBOX.DeleteAX	clc
TBOX.DeleteAXC	adc ZPPtr2
				sta ZPPtr3
				txa
				adc ZPPtr2+1
				sta ZPPtr3+1

				ldy #0

.1				lda (ZPPtr3),y
				sta (ZPPtr2),y
				beq .8

				iny
				bne .1

				inc ZPPtr3+1
				inc ZPPtr2+1
				bra .1

.8				rts
*--------------------------------------
TBOX.SetViewPort
				ldy #S.TBOX.DocX+1
				lda (ZPObjPtr),y
				tax
				dey
				lda (ZPObjPtr),y

				ldy #S.TBOX.HScroll
				sec
				sbc (ZPObjPtr),y

				ldy #S.OBJ.CurX			set CurX = DocX - HScroll
				sta (ZPObjPtr),y

				ldy #S.TBOX.HScroll+1
				txa
				sbc (ZPObjPtr),y		DocX => HScroll ?

				bcs .10					yes..

				ldy #S.TBOX.DocX+1		no, set HScroll = DocX
				lda (ZPObjPtr),y
				tax
				dey
				lda (ZPObjPtr),y

				ldy #S.TBOX.HScroll
				sta (ZPObjPtr),y
				iny
				txa
				sta (ZPObjPtr),y

				lda #0					set CurX = 0

				bra .20
*--------------------------------------
.10				ldy #S.TBOX.HScroll+1
				lda (ZPObjPtr),y
				tax
				dey
				lda (ZPObjPtr),y

				ldy #S.OBJ.InnerW
				clc
				adc (ZPObjPtr),y
				bcc .11

				inx

.11				ldy #S.TBOX.DocX		(HScroll + InnerW) > (DocX + 1) ?
				clc						DocX+1
				sbc (ZPObjPtr),y
				iny
				txa
				sbc (ZPObjPtr),y
				bcs .21					no...

				ldy #S.OBJ.InnerW		yes, set HScroll = DocX - (InnerW - 1)
				lda (ZPObjPtr),y
				dec
				sta TempW				(InnerW - 1)

				ldy #S.TBOX.DocX
				lda (ZPObjPtr),y
				sec
				sbc TempW
				tax

				iny
				lda (ZPObjPtr),y
				sbc #0
				bcc .12					DocX - (InnerW - 1) < 0

				ldy #S.TBOX.HScroll+1
				sta (ZPObjPtr),y
				dey
				txa
				sta (ZPObjPtr),y

				lda TempW				set CurX = (InnerW - 1)

				bra .20

.12				lda #0
				ldy #S.TBOX.HScroll+1
				sta (ZPObjPtr),y
				dey
				sta (ZPObjPtr),y

.20				ldy #S.OBJ.CurX
				sta (ZPObjPtr),y

				sec
				ror bRepaintAll
*--------------------------------------
.21				ldy #S.TBOX.DocY+1
				lda (ZPObjPtr),y
				tax
				dey
				lda (ZPObjPtr),y

				ldy #S.TBOX.VScroll
				sec
				sbc (ZPObjPtr),y

				ldy #S.OBJ.CurY			set CurY = DocY - VScroll
				sta (ZPObjPtr),y

				ldy #S.TBOX.VScroll+1
				txa
				sbc (ZPObjPtr),y		DocY => VScroll ?
				bcs .30					yes..

				ldy #S.TBOX.DocY+1		no, set VScroll = DocY
				lda (ZPObjPtr),y
				tax
				dey
				lda (ZPObjPtr),y

				ldy #S.TBOX.VScroll
				sta (ZPObjPtr),y
				iny
				txa
				sta (ZPObjPtr),y

				lda #0					set CurY = 0

				bra .40
*--------------------------------------
.30				ldy #S.TBOX.VScroll+1
				lda (ZPObjPtr),y
				tax
				dey
				lda (ZPObjPtr),y

				ldy #S.OBJ.InnerH
				clc
				adc (ZPObjPtr),y
				bcc .31

				inx

.31				ldy #S.TBOX.DocY		(VScroll + InnerH) > (DocY + 1) ?
				clc						DocY+1
				sbc (ZPObjPtr),y
				iny
				txa
				sbc (ZPObjPtr),y
				bcs .41					no...

				ldy #S.OBJ.InnerH		yes, set VScroll = DocY - (InnerH - 1)
				lda (ZPObjPtr),y
				dec
				sta TempW				(InnerH - 1)

				ldy #S.TBOX.DocY
				lda (ZPObjPtr),y
				sec
				sbc TempW
				tax

				iny
				lda (ZPObjPtr),y
				sbc #0
				bcc .32					DocY - (InnerH - 1) < 0

				ldy #S.TBOX.VScroll+1
				sta (ZPObjPtr),y
				dey
				txa
				sta (ZPObjPtr),y

				lda TempW				set CurY = (InnerH - 1)

				bra .40

.32				lda #0
				ldy #S.TBOX.VScroll+1
				sta (ZPObjPtr),y
				dey
				sta (ZPObjPtr),y

				ldy #S.TBOX.DocY
				lda (ZPObjPtr),y

.40				ldy #S.OBJ.CurY
				sta (ZPObjPtr),y
				sec
				ror bRepaintAll

.41				clc						CLC RTS to jmp to
				rts
*--------------------------------------
MAN
SAVE usr/src/lib/libtui.s.tbox
LOAD usr/src/lib/libtui.s
ASM