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A2osX/BIN/EDIT.S.SCRN.txt
Rémy GIBERT 267d70f474 Kernel 0.93
2019-05-29 17:21:14 +02:00

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NEW
AUTO 3,1
.LIST OFF
*--------------------------------------
SCRN.Init >LDYAI 510+5+5+4+1 potentially 255*\\ NORM,INV,CEOL & \0
>SYSCALL Getmem
bcs .9
>STYA LineBufPtr
txa
>STA.G hLineBuffer
>LDA.G ScreenH
dec
>PUSHA
>PUSHBI 1
>LDYA L.SEQ.INIT
>SYSCALL printf
bcs .9
lda #0
ldy #FileX
sta (pData),y
ldy #FileY
sta (pData),y
iny
sta (pData),y
ldy #ScreenX
sta (pData),y
ldy #ScreenY
sta (pData),y
iny
sta (pData),y
jsr SCRN.UpdateTopBar
bcs .9
jsr SCRN.UpdateViewPort
bcs .9
jsr SCRN.UpdateMain
.9 rts
*--------------------------------------
SCRN.UpdateTopBar
lda #1
jsr SCRN.InvLineA
bcs .9
>LDA.G hFileName
beq .1
>SYSCALL GetMemPtr
bra .2
.1 >LDYA L.MSG.NEWFILE
.2 >PUSHYA
>PUSHBI 2
>LDYA L.MSG.TOPBAR
>SYSCALL printf
.9 rts
*--------------------------------------
SCRN.UpdateMain >LDA.G ScreenY
sta TmpIndex
iny
lda (pData),y
sta TmpIndex+1
lda #0
sta TmpByte
>LDA.G ViewPortH
sta TmpCount
.1 lda TmpIndex
ldx TmpIndex+1
jsr BUF.GetLineAX Y = line length
bcs .5
lda TmpByte
jsr SCRN.UpdateLineAtALenY
bcs SCRN.UpdateMain.9
.3 inc TmpByte
inc TmpIndex
bne .4
inc TmpIndex+1
.4 dec TmpCount
bne .1
jmp SCRN.GotoCurXCurY
.5 ldx #0
ldy TmpByte
jsr GotoXY
bcs SCRN.UpdateMain.9
>PUSHBI 0
>LDYA L.SEQ.CEOL
>SYSCALL printf
bcs SCRN.UpdateMain.9
inc TmpByte
dec TmpCount
bne .5
jmp SCRN.GotoCurXCurY
SCRN.UpdateMain.9
rts
*--------------------------------------
SCRN.UpdateCurrentLine
>LDA.G ScreenY+1
tax
dey
lda (pData),y
clc
>ADC.G CurY
bcc .1
inx
.1 jsr BUF.GetLineAX
bcs SCRN.UpdateMain.9
phy
>LDA.G CurY
ply
*--------------------------------------
* A = Target Screen Y position
* BufPtr = Text line start, Y = len
*--------------------------------------
SCRN.UpdateLineAtALenY
stz bSelected
sty TmpLen
ldx #0
tay
jsr GotoXY
bcs .9
>LDYA LineBufPtr
>STYA ZPPTR1
>LDA.G ScreenW
tax
>LDA.G ScreenX
cmp TmpLen
bcs .8
tay
clc
adc BUF.LOffset
sta BUF.COffset
lda #0
adc BUF.LOffset+1
sta BUF.COffset+1
tya
* clc
adc BufPtr
sta BufPtr
bcc .1
inc BufPtr+1
.1 lda (BufPtr)
beq .8
cmp #C.CR
beq .8
jsr BUF.CheckSelected
eor bSelected
bpl .5
jsr SCRN.ToggleSel
.5 lda (BufPtr)
jsr SCRN.ToLineBuf
cmp #'\'
bne .51
jsr SCRN.ToLineBuf
.51 inc BufPtr
bne .6
inc BufPtr+1
.6 inc BUF.COffset
bne .7
inc BUF.COffset+1
.7 dex
bne .1
.8 bit bSelected
bpl .80
jsr SCRN.ToggleSel
.80 ldy #0
.81 lda SEQ.CEOL,y
beq .82
jsr SCRN.ToLineBuf
iny
bra .81
.82 sta (ZPPTR1)
>PUSHBI 0
>LDYA LineBufPtr
>SYSCALL printf
.9 rts
*--------------------------------------
SCRN.ToggleSel ldy #0
lda bSelected
eor #$ff
sta bSelected
bpl .1
ldy #6
.1 lda SEQ.NORM,y
beq .8
jsr SCRN.ToLineBuf
iny
bra .1
.8 rts
*--------------------------------------
SCRN.ToLineBuf sta (ZPPTR1)
inc ZPPTR1
bne .8
inc ZPPTR1+1
.8 rts
*--------------------------------------
SCRN.UpdateStatusBar
>PUSHBI 1
>PUSHB.G ScreenH
>PUSHBI 2
>LDYA L.MSG.GOTOXY
>SYSCALL printf
bcs .9
>PUSHBI 0
>LDYA L.SEQ.INV
>SYSCALL printf
bcs .9
>LDA.G PromptMode
bne .2
>LDA.G FileY
tax
iny
lda (pData),y
inx
bne .1
inc
.1 >PUSHA
txa
>PUSHA
>LDA.G FileX
inc
>PUSHA
>PUSHW BufLen
>PUSHBI 5
>LDYA L.MSG.STATUSBAR
>SYSCALL printf
bcs .9
lda #58
jsr SCRN.ClearEOLA
bcs .9
>PUSHBI 0
>LDYA L.SEQ.NORM
>SYSCALL printf
bcs .9
jmp SCRN.GotoCurXCurY
.9 rts
*--------------------------------------
.2 eor #PromptModeHelp
beq .3
>PUSHW pData
lda #2
.3 >PUSHA
>LDA.G ScreenH
jsr SCRN.InvLineA
bcs .9
ldy #PromptMode
lda (pData),y
tax
>LDYA L.MSG.STATUSBAR,x
>SYSCALL printf
bcs .9
rts
*--------------------------------------
SCRN.UpdateStatusBarErrA
pha
ldy #ScreenH
lda (pData),y
dec
jsr SCRN.InvLineA
pla
>PUSHA
>PUSHBI 1
>LDYA L.MSG.STATUSBAR.E
>SYSCALL printf
rts
*--------------------------------------
SCRN.CursorAdjust
.1 jsr BUF.ComputeCOffset
bcc .8
>DECW.G FileY
>STZ.G FileX
bra .1
.8 rts
*--------------------------------------
SCRN.ClearEOLA pha
.1 pla
ldy #ScreenW
cmp (pData),y
bcs .8
inc
pha
lda #' '
>SYSCALL PutChar
bcc .1
plx
rts
.8 clc
.9 rts
*--------------------------------------
SCRN.InvLineA sta .2+1
lda #1
>PUSHA
lda .2+1
>PUSHA
>PUSHBI 2
>LDYA L.MSG.GOTOXY
>SYSCALL printf
bcs .9
>PUSHBI 0
>LDYA L.SEQ.INV
>SYSCALL printf
bcs .9
ldy #ScreenW
lda (pData),y
.1 pha
lda #' '
>SYSCALL PutChar
pla
bcs .9
dec
bne .1
lda #1
>PUSHA
.2 lda #$ff
>PUSHA
>PUSHBI 2
>LDYA L.MSG.GOTOXY
>SYSCALL printf
.9 rts
*--------------------------------------
SCRN.GotoCurXCurY
ldy #CurX
lda (pData),y
tax
ldy #CurY
lda (pData),y
tay
GotoXY txa
inc
>PUSHA
tya
inc
inc
>PUSHA
>PUSHBI 2
>LDYA L.MSG.GOTOXY
>SYSCALL printf
GotoXY.RTS rts
*--------------------------------------
SCRN.UpdateViewPort
lda #$ff
sta bNotRepaint
.1 ldy #FileX
lda (pData),y
ldy #ScreenX
cmp (pData),y
bcs .2 out of left border ?
ldy #ScreenX yes
lda (pData),y
dec
sta (pData),y
stz bNotRepaint
bra .1
.2 clc
ldy #ScreenX
lda (pData),y
ldy #ScreenW
adc (pData),y
dec
ldy #FileX
cmp (pData),y
bcs .3 out of right border ?
ldy #ScreenX
lda (pData),y
inc
sta (pData),y
stz bNotRepaint
bra .2
.3 ldy #FileY+1
lda (pData),y
tax
dey
lda (pData),y A,X = FileY
ldy #ScreenY
cmp (pData),y
iny
txa
sbc (pData),y
bcs .4 out of top border ?
ldy #ScreenY move viewport up one line....
lda (pData),y
sbc #0 CC from BCS
sta (pData),y
iny
lda (pData),y
sbc #0
sta (pData),y
bit bNotRepaint
bpl .3
jsr SCRN.scrollDn ...and move content one line down
bcs GotoXY.RTS
.4 ldy #ScreenY+1
lda (pData),y
tax
dey
lda (pData),y
ldy #ViewPortHm1
clc
adc (pData),y
bcc .41
inx
.41 ldy #FileY A,X = screen bottom
cmp (pData),y
txa
iny FileY > screen bottom ?
sbc (pData),y
bcs .5 CS : fileY>= screen bottom
* clc from BCS
ldy #ScreenY move viewport down one line....
lda (pData),y
adc #1
sta (pData),y
iny
lda (pData),y
adc #0
sta (pData),y
bit bNotRepaint
bpl .4
jsr SCRN.scrollUp ...and move content one line up
bcs .9
bra .4
.5 sec
ldy #FileX
lda (pData),y
ldy #ScreenX
sbc (pData),y
ldy #CurX
sta (pData),y
sec
ldy #FileY
lda (pData),y
ldy #ScreenY
sbc (pData),y
ldy #CurY
sta (pData),y
bit bNotRepaint
bmi .6
jsr SCRN.UpdateMain
bcs .9
.6 jsr SCRN.UpdateStatusBar
bcs .9
jmp SCRN.GotoCurXCurY
.9 rts
*--------------------------------------
SCRN.scrollUp ldy #CurX
lda (pData),y
inc
>PUSHA
ldy #CurY
lda (pData),y
inc
inc
>PUSHA
>PUSHBI 2
>LDYA L.SEQ.SCROLLUP
>SYSCALL printf
bcs .9
ldy #ScreenY+1
lda (pData),y
tax
dey
lda (pData),y
clc
ldy #ViewPortHm1
adc (pData),y
bcc .1
inx
.1 jsr BUF.GetLineAX
bcs .9
ldy #ViewPortHm1
lda (pData),y
jmp SCRN.UpdateLineAtALenY
.9 rts
*--------------------------------------
SCRN.scrollDn ldy #CurX
lda (pData),y
inc
>PUSHA
ldy #CurY
lda (pData),y
inc
inc
>PUSHA
>PUSHBI 2
>LDYA L.SEQ.SCROLLDN
>SYSCALL printf
bcs .9
ldy #ScreenY+1
lda (pData),y
tax
dey
lda (pData),y
jsr BUF.GetLineAX
bcs .9
lda #0
jmp SCRN.UpdateLineAtALenY
.9 rts
*--------------------------------------
MAN
SAVE USR/SRC/BIN/EDIT.S.SCRN
LOAD USR/SRC/BIN/EDIT.S
ASM
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