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A2osX/BIN/EDIT.S.SCRN.txt
Rémy GIBERT 8f3a32f4d6 Kernel 0.93+
2019-11-04 17:14:25 +01:00

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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
jsr SCRN.Home
jsr SCRN.UpdateTopBar
bcs .9
jsr SCRN.UpdateViewPort
bcs .9
jsr SCRN.UpdateMain
.9 rts
*--------------------------------------
SCRN.Home lda #0
ldy #FileX
.1 sta (pData),y
iny
cpy #CurX
bne .1
inc
sta (pData),y CurX
iny
sta (pData),y CurY
rts
*--------------------------------------
SCRN.UpdateTopBar
jsr SCRN.LineBufInit
>PUSHBI 1
>PUSHBI 1
>PUSHBI 2
>LDYA L.MSG.GOTOXY
>SYSCALL printf
bcs .9
>LDA.G hFileName
beq .1
>SYSCALL GetMemPtr
bra .2
.1 >LDYA L.MSG.NEWFILE
.2 >PUSHYA
>PUSHBI 2
>PUSHW L.MSG.TOPBAR
>LDYA ZPPTR1
>SYSCALL sprintf
bcs .9
>LDA.G bSaved
bne .8
ldy #255
.3 iny
lda (ZPPTR1),y
bne .3
lda #'!'
sta (ZPPTR1),y
iny
lda #0
sta (ZPPTR1),y
.8 jmp SCRN.LineBufOutBar
.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 SCRN.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 SCRN.GotoXY
bcs SCRN.UpdateMain.9
jsr SCRN.LineBufInit
ldy #$ff
.10 iny
lda SEQ.EDIT,y
beq .11
jsr SCRN.ToLineBuf
bra .10
.11 ldy #0
>LDA.G ScreenW
tax
>LDA.G ScreenX
cmp TmpLen
bcs .8
tay
clc
adc BUF.LOffset
sta BUF.COffset
lda #0
adc BUF.LOffset+1
sta BUF.COffset+1
tya
* clc
adc BufPtr
sta BufPtr
bcc .1
inc BufPtr+1
.1 lda (BufPtr)
beq .8
cmp #C.CR
beq .8
jsr BUF.CheckSelected
eor bSelected
bpl .5
jsr SCRN.ToggleSel
.5 lda (BufPtr)
cmp #'\'
beq .50
cmp #'%'
bne .51
.50 pha
lda #'\'
jsr SCRN.ToLineBuf
pla
.51 jsr SCRN.ToLineBuf
inc BufPtr
bne .6
inc BufPtr+1
.6 inc BUF.COffset
bne .7
inc BUF.COffset+1
.7 dex
bne .1
.8 bit bSelected
bpl .80
jsr SCRN.ToggleSel
.80 lda #0
jsr SCRN.ToLineBuf
>PUSHBI 0
>LDYA LineBufPtr
>SYSCALL printf
.9 rts
*--------------------------------------
SCRN.ToggleSel ldy #0
lda bSelected
eor #$ff
sta bSelected
bpl .1
ldy #6
.1 lda SEQ.NORM,y
beq .8
jsr SCRN.ToLineBuf
iny
bra .1
.8
SCRN.ToggleSel.RTS
rts
*--------------------------------------
SCRN.UpdateStatusBar
jsr SCRN.LineBufInit
>PUSHBI 1
>PUSHB.G ScreenH
>PUSHBI 2
>LDYA L.MSG.GOTOXY
>SYSCALL printf
bcs SCRN.ToggleSel.RTS
>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 BUF.COffset
>PUSHW BufLen
>PUSHBI 7
bra SCRN.UpdateStatusBarOut
*--------------------------------------
.2 eor #PromptModeHelp
beq .3
>PUSHW pData
lda #2
.3 >PUSHA
bra SCRN.UpdateStatusBarOut
*--------------------------------------
SCRN.UpdateStatusBarErrA
>PUSHA
>PUSHBI 1
ldx #10
bra SCRN.UpdateStatusBarOutErr
SCRN.UpdateStatusBarOut
ldy #PromptMode
lda (pData),y
tax
SCRN.UpdateStatusBarOutErr
>PUSHW L.MSG.STATUSBAR,x
>LDYA ZPPTR1
>SYSCALL sprintf
SCRN.LineBufOutBar
>LDA.G ScreenW
tax
ldy #0
.1 lda (ZPPTR1),y
beq .2
iny
dex
bne .1
bra .4
.2 lda #C.SPACE
.3 sta (ZPPTR1),y
iny
dex
bne .3
lda #0
sta (ZPPTR1),y
.4 >PUSHW LineBufPtr
>PUSHBI 2
>LDYA L.SEQ.BAR
>SYSCALL printf
bcs .9
jmp SCRN.GotoCurXCurY
.9 rts
*--------------------------------------
SCRN.CursorAdjust
.1 jsr BUF.ComputeCOffset
bcc .8
>DECW.G FileY
>STZ.G FileX
bra .1
.8 rts
*--------------------------------------
SCRN.LineBufInit
>LDYA LineBufPtr
>STYA ZPPTR1
rts
*--------------------------------------
SCRN.ToLineBuf sta (ZPPTR1)
inc ZPPTR1
bne .8
inc ZPPTR1+1
.8 rts
*--------------------------------------
SCRN.GotoCurXCurY
ldy #CurX
lda (pData),y
tax
ldy #CurY
lda (pData),y
tay
SCRN.GotoXY txa
inc
>PUSHA
tya
inc
inc
>PUSHA
>PUSHBI 2
>LDYA L.MSG.GOTOXY
>SYSCALL printf
rts
*--------------------------------------
SCRN.UpdateViewPort
stz bRepaint
.1 >LDA.G FileX
>CMP.G ScreenX
bcs .2 out of left border ?
>DEC.G ScreenX yes
sec
ror bRepaint
bra .1
.2 >LDA.G ScreenX
>ADC.G ScreenW
dec
>CMP.G FileX
bcs .3 out of right border ?
>INC.G ScreenX
sec
ror bRepaint
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 ?
>DECW.G ScreenY move viewport up one line....
bit bRepaint
bmi .3 skip scroll, will be repainted later
jsr SCRN.scrollDn ...and move content one line down
bcc .3
rts
.4 ldy #ScreenY+1
lda (pData),y
tax
dey
lda (pData),y
>ADC.G ViewPortHm1
bcc .5
inx
.5 ldy #FileY A,X = screen bottom
clc
sbc (pData),y
txa
iny FileY > screen bottom ?
sbc (pData),y
bcs .6 CS : fileY>= screen bottom
>INCW.G ScreenY move viewport down one line....
bit bRepaint
bmi .4
jsr SCRN.scrollUp ...and move content one line up
bcc .4
.9 rts
.6 >LDA.G FileX
>SBC.G ScreenX
>STA.G CurX
>LDA.G FileY
>SBC.G ScreenY
>STA.G CurY
bit bRepaint
bpl .7
jsr SCRN.UpdateMain
bcs .9
.7 jsr BUF.ComputeCOffset
jsr SCRN.UpdateStatusBar
bcs .9
jmp SCRN.GotoCurXCurY
*--------------------------------------
SCRN.scrollUp >LDA.G CurX
inc
>PUSHA
>LDA.G CurY
inc
inc
>PUSHA
>PUSHBI 2
>LDYA L.SEQ.SCROLLUP
>SYSCALL printf
bcs .9
ldy #ScreenY+1
lda (pData),y
tax
dey
lda (pData),y
>ADC.G ViewPortHm1
bcc .1
inx
.1 jsr BUF.GetLineAX
bcs .9
>LDA.G ViewPortHm1
jmp SCRN.UpdateLineAtALenY
.9 rts
*--------------------------------------
SCRN.scrollDn >LDA.G CurX
inc
>PUSHA
>LDA.G CurY
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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