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Implement meta left/right (home/end)

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This commit is contained in:
Joshua Bell 2018-05-28 21:16:12 -07:00
parent 04ae9e08e8
commit 6a19a7d741
1 changed files with 97 additions and 8 deletions
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105
desk.acc/find.files.s
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@ -345,6 +345,20 @@ done: rts
;;; ============================================================
.proc handle_key
lda event_params::modifiers
beq not_meta
;; Button down
lda event_params::key
cmp #CHAR_LEFT
bne :+
jmp do_meta_left
: cmp #CHAR_RIGHT
bne :+
jmp do_meta_right
: jmp ignore_char
not_meta:
lda event_params::key
cmp #CHAR_ESCAPE
beq exit
@ -383,7 +397,7 @@ ignore_char:
;; jsr beep ; ?
jmp input_loop
;;; ; ------------------------------------------------------------
;;; ------------------------------------------------------------
.proc do_char
;; check length
@ -404,8 +418,48 @@ ignore_char:
jmp input_loop
.endproc
;;; ; ------------------------------------------------------------
;;; ------------------------------------------------------------
.proc do_meta_left
lda buf_left ; length of string to left of IP
beq done
;; shift right string up N (apart from IP)
clc
adc buf_right
tay
ldx buf_right
: cpx #1
beq move
lda buf_right,x
sta buf_right,y
dex
dey
bne :- ; always
;; move chars from left string to just after IP in right string
move: ldx buf_left
: lda buf_left,x
sta buf_right+1,x
dex
bpl :-
;; adjust lengths
lda buf_left
clc
adc buf_right
sta buf_right
lda #0
sta buf_left
jsr draw_input_text
done: jmp input_loop
.endproc
;;; ------------------------------------------------------------
.proc do_left
lda buf_left ; length of string to left of IP
@ -437,10 +491,45 @@ ignore_char:
done: jmp input_loop
.endproc
;;; ; ------------------------------------------------------------
;;; ------------------------------------------------------------
.proc do_meta_right
lda buf_right ; length of string from IP rightwards
cmp #2 ; must be at least one char (plus IP)
bcc done
;; append right string to left
ldx #2
ldy buf_left
iny
: lda buf_right,x
sta buf_left,y
cpx buf_right
beq :+
inx
iny
bne :- ; always
;; adjust lengths
: lda buf_left
clc
adc buf_right
sec
sbc #1
sta buf_left
lda #1
sta buf_right
jsr draw_input_text
done: jmp input_loop
.endproc
;;; ------------------------------------------------------------
.proc do_right
lda buf_right ; length of string from IP rightwards
lda buf_right ; length of string from IP rightwards
cmp #2 ; must be at least one char (plus IP)
bcc done
@ -469,7 +558,7 @@ done: jmp input_loop
done: jmp input_loop
.endproc
;;; ; ------------------------------------------------------------
;;; ------------------------------------------------------------
.proc do_delete
@ -483,7 +572,7 @@ done: jmp input_loop
.endproc
;;; ; ------------------------------------------------------------
;;; ------------------------------------------------------------
.proc do_search
;; Concatenate left/right strings
@ -636,7 +725,7 @@ update: lda top_row
;; Compute height of line (font height + 1)
copy16 #1, line_height
add16_8 line_height, DEFAULT_FONT+MGTK::font_offset_height, line_height
add16_8 line_height, DEFAULT_FONT+MGTK::Font::height, line_height
;; Update top of cliprect: 1 + top_row * line_height
copy16 #0, winfo_results::cliprect::y1
@ -808,7 +897,7 @@ done: rts
;;; ============================================================
.proc draw_results
lda DEFAULT_FONT+MGTK::font_offset_height
lda DEFAULT_FONT+MGTK::Font::height
sta line_height
inc line_height