Subversion Repositories Kolibri OS

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;;                                                                 ;;

;; Copyright (C) KolibriOS team 2004-2014. All rights reserved.    ;;

;; Distributed under terms of the GNU General Public License       ;;

;;                                                                 ;;

;;   Written by hidnplayr@kolibrios.org                            ;;

;;                                                                 ;;

;;         GNU GENERAL PUBLIC LICENSE                              ;;

;;          Version 2, June 1991                                   ;;

;;                                                                 ;;

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text_insert_newlines:			; esi = ASCIIZ string

	xor	edx, edx		; number of lines of text

	cmp	byte[esi], 0

	je	.done

  .next_line:

	xor	ebx, ebx

	mov	ecx, [textbox_width]

	inc	ecx

  .more:

	dec	ecx

	jz	.end_of_line

	lodsb				; get one character of the string

	test	al, al			; end of string?

	jz	.almost_done

	cmp	al, ' ' 		; it's a space! remember its position

	je	.space

	cmp	al, 13			; we already inserted a newline once, make it a space again

	je	.soft_nl

	cmp	al, 10			; it's a newline, continue onto the next line

	jne	.more

	inc	edx

	jmp	.next_line

  .soft_nl:

	mov	byte[esi-1], ' '

  .space:

	mov	ebx, esi		; last detected space

	jmp	.more

  .end_of_line:

	inc	edx

	test	ebx, ebx		; did we detect any spaces on this line?

	jz	.next_line		; no:   just continue onto the next line

	mov	byte[ebx-1], 13 	; yes:  replace last space on line with a soft newline

	mov	esi, ebx		;       and continue parsing just after last space

	jmp	.next_line		;

  .almost_done:

	dec	esi

  .done:

	ret

;----------------------------------

; scan untill next line is reached

;

; When you set the direction flag before calling, you can also scan for previous line!

; IN:   esi

; OUT:  esi

;----------------------------------

text_nextline:

	mov	ecx, [textbox_width]

  .loop:

	lodsb

	test	al, al

	jz	.done

	cmp	al, 10

	je	.done

	cmp	al, 13

	je	.done

	dec	ecx

	jnz	.loop

  .done:

	ret

;----------------------------------

; print string

;

; IN:   esi = ptr to string

;       bl = char which marks end of string

; OUT:  esi = ptr to end of str

;----------------------------------

print_string:

	push	eax

  .loop:

	lodsb

	cmp	al, bl

	je	.done

	cmp	al, 13

	je	.loop

	test	al, al

	jz	.done

	call	print_char

	jmp	.loop

  .done:

	pop	eax

	ret

;----------------------------------

; print ASCIIZ string

;

; IN:   esi = ptr to ASCIIZ string

; OUT:  esi = ptr to end of str

;----------------------------------

print_asciiz:

	push	eax

  .loop:

	lodsb

	test	al, al

	jz	.done

	call	print_char

	jmp	.loop

  .done:

	pop	eax

	ret

;----------------------------------

; print character

;

; IN:   al = char to print

; OUT:  /

;----------------------------------

print_char:

	push	esi edi

	mov	esi, [window_print]

	mov	edi, [esi + window.text_write]

	stosb

	cmp	edi, [esi + window.text_end]

	jae	.uh_ow

	mov	[esi + window.text_write], edi

  .continue:

	or	[esi + window.flags], FLAG_UPDATED

	pop	edi esi

	ret

  .uh_ow:

	pusha

	mov	edi, [esi + window.text_start]

	mov	[esi + window.text_print], edi

	lea	esi, [edi + TEXT_BUFFERSIZE/2]

	call	text_nextline

	mov	ecx, TEXT_BUFFERSIZE/8

	rep	movsd

	mov	esi, edi

	call	text_insert_newlines

	mov	ebx, [window_print]

	mov	[ebx + window.text_lines], edx

	mov	[ebx + window.text_scanned], esi

	mov	[ebx + window.text_write], esi

	mov	[ebx + window.text_line_print], 0

	popa

	jmp	.continue

draw_channel_text:

	mov	edi, [window_active]

	and	[edi + window.flags], not FLAG_UPDATED	; clear the 'window is updated' flag

; Scan new text for newlines

	mov	esi, [edi + window.text_scanned]

	call	text_insert_newlines

	add	[edi + window.text_lines], edx

	mov	[edi + window.text_scanned], esi

; Is scrollbar at lowest position?

	test	[edi + window.flags], FLAG_SCROLL_LOW

	jnz	.yesscroll				;Yes

	cmp	[scroll2.all_redraw], 1 		;No

	jnz	 .noscroll

	mov	edx, [textbox_height]

	sub	edx, [edi + window.text_line_print]

	jg	.noscroll

  .yesscroll:

; Scrollbar was at lowest position, scroll down automatically when new text arrived.

	mov	edx, [edi + window.text_lines]

	sub	edx, [textbox_height]

	jle	.noscroll				; There are less lines of text than fit into the window, dont scroll..

	sub	edx, [edi + window.text_line_print]

	je	.noscroll				; We are already at the bottom pos, dont scroll..

  .scroll_to_pos:		; edx = number of lines to go up/down (flags must indicate direction)

	pushf

	add	[edi + window.text_line_print], edx

	mov	esi, [edi + window.text_print]

	popf

	ja	.loop_forward

	std			; set direction flag so we can scan backwards

	dec	esi

	dec	esi		; move our cursor just in front of newline, for scanning backwards

  .loop_backward:

	call	text_nextline

	inc	edx

	jnz	.loop_backward

	inc	esi

	inc	esi		; move the cursor just after last newline

	cld

	jmp	.ok

  .loop_forward:

	call	text_nextline

	dec	edx

	jnz	.loop_forward

  .ok:

	mov	[edi + window.text_print], esi

  .noscroll:

; Update and draw scrollbar when nescessary

	mov	edx, [edi + window.text_lines]

	cmp	edx, [textbox_height]

	jbe	.scroll_done

	mov	[scroll2.max_area], edx

	mov	eax, [edi + window.text_line_print]

	mov	[scroll2.position], eax

	push	dword scroll2			; redraw scrollbar

	call	[scrollbar_draw]

	mov	[scroll2.all_redraw], 0 	; next time, dont redraw it completely

  .scroll_done:

; Calculate start offset coordinates (align text to bottom)

	mov	ebx, [textbox_height]

	sub	ebx, [edi + window.text_lines]

	jb	.no_offset

	imul	ebx, FONT_HEIGHT

	push	[edi + window.text_start]

	pop	[edi + window.text_print]

	jmp	.draw_text

  .no_offset:

	xor	ebx, ebx

  .draw_text:

; Prepare to actually draw some text

	mov	eax, [textbox_height]	; max number of lines to draw

	add	ebx, TEXT_X shl 16 + TEXT_Y

	mov	ecx, [colors.work_text] ; default text color

	mov	edx, [edi + window.text_print]

  .drawloop:

	cmp	byte[edx], 0

	je	.end_of_text

; Clear one row of characters

	pusha

	mov	cx, bx

	shl	ecx, 16

	mov	cx, FONT_HEIGHT

	mov	ebx, TEXT_X shl 16

	mov	bx, word[textbox_width]

	imul	bx, FONT_WIDTH

	mov	edx, [colors.work]

	mcall	13			; draw rectangle

	popa

	mov	esi, edx

	add	esi, [textbox_width]

  .line:

	cmp	byte[edx], 0

	je	.end_of_text

	cmp	byte[edx], 13

	je	.newline_soft

	cmp	byte[edx], 10

	je	.newline_hard

	push	esi eax

	cmp	byte[edx], 3		; escape code for mIRC colors

	jne	.no_colors

	inc	edx

	call	dec_to_esi

	jz	.no_colors

	mov	ecx, [irc_colors + 4*esi]

	cmp	byte[edx], ','		; background color?

	jne	.no_colors

	inc	edx

	call	dec_to_esi

	jz	.no_colors

	mov	edi, [irc_colors + 4*esi]

	or	ecx, 0x40000000

  .no_colors:

	mov	esi, 1

	mcall	4			; draw text

	add	ebx, FONT_WIDTH shl 16

	inc	edx

	pop	eax esi

	cmp	edx, esi

	jb	.line

	jmp	.line_full

  .newline_hard:

	mov	ecx, [colors.work_text]

  .newline_soft:

	inc	edx

  .line_full:

	and	ebx, 0x0000ffff

	add	ebx, TEXT_X shl 16 + FONT_HEIGHT

	dec	eax

	jnz	.drawloop

  .end_of_text:

	ret

dec_to_esi:

	xor	esi, esi

  .loop:

	movzx	eax, byte[edx]

	sub	al, '0'

	jb	.done

	cmp	al, 9

	ja	.done

	inc	edx

	lea	esi, [esi*4 + esi]	; esi * 5

	lea	esi, [esi*2 + eax]	; esi * 2 + eax

	jmp	.loop

  .done:

	cmp	esi, 16

	jae	.fail

	ret

  .fail:

	xor	esi, esi

	ret

if TIMESTAMP

print_timestamp:

	pusha

	mcall	3			; get system time

	mov	ebx, eax

	mov	al, '['

	call	print_char

	mov	ecx, TIMESTAMP

  .loop:

	mov	al, bl

	shr	al, 4

	add	al, '0'

	call	print_char

	mov	al, bl

	and	al, 0x0f

	add	al, '0'

	call	print_char

	dec	ecx

	jz	.done

	mov	al, ':'

	call	print_char

	shr	ebx, 8

	jmp	.loop

  .done:

	mov	al, ']'

	call	print_char

	mov	al, ' '

	call	print_char

	popa

	ret

end if