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8346 IgorA 1 
;**************************************************************
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; Path Show Macro for Kolibri OS
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; Copyright (c) 2010, Marat Zakiyanov aka Mario79, aka Mario
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; All rights reserved.
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;
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; Redistribution and use in source and binary forms, with or without
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; modification, are permitted provided that the following conditions are met:
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;     * Redistributions of source code must retain the above copyright
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;       notice, this list of conditions and the following disclaimer.
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;     * Redistributions in binary form must reproduce the above copyright
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;       notice, this list of conditions and the following disclaimer in the
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;       documentation and/or other materials provided with the distribution.
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;     * Neither the name of the  nor the
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;       names of its contributors may be used to endorse or promote products
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;       derived from this software without specific prior written permission.
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;
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; THIS SOFTWARE IS PROVIDED BY Marat Zakiyanov ''AS IS'' AND ANY
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; EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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; WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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; DISCLAIMED. IN NO EVENT SHALL  BE LIABLE FOR ANY
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; DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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; (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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; ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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; (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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; SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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;*****************************************************************************
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macro path_show_start
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{
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	pusha
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	mov	edi,dword [esp+36]
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}
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;*****************************************************************************
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macro path_show_exit
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{
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popa
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ret 4
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}
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;*****************************************************************************
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align 16
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path_show:
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ps_type			equ [edi]	;dword
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ps_start_y		equ [edi+4]	;word
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ps_start_x		equ [edi+6]	;word
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ps_font_size_x		equ [edi+8]	;word
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ps_area_size_x		equ [edi+10]	;word
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ps_font_number		equ [edi+12]	;dword
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ps_background_flag	equ [edi+16]	;dword
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ps_font_color		equ [edi+20]	;dword
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ps_background_color	equ [edi+24]	;dword
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ps_text_pointer		equ [edi+28]	;dword
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ps_work_area_pointer	equ [edi+32]	;dword
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ps_temp_text_length	equ [edi+36]	;dword
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;*****************************************************************************
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;*****************************************************************************
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; draw event
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;*****************************************************************************
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;*****************************************************************************
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.prepare:
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path_show_start
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;-------------------------------------
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	mov	esi,ps_text_pointer
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	xor	eax,eax
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	xor	ecx,ecx
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	dec	ecx
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	cld
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@@:
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	lodsb
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	inc	ecx
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	test	eax,eax
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	jnz	@b
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	mov	ps_temp_text_length,ecx
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	movzx	eax,word ps_font_size_x
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	imul	ecx,eax
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	movzx	eax,word ps_area_size_x
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	cmp	ecx,eax
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	jae	.cut
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;-------------------------------------
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	mov	esi,ps_text_pointer
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	mov	edi,ps_work_area_pointer
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	xor	eax,eax
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@@:
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	lodsb
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	stosb
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	test	eax,eax
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	jnz	@b
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	jmp	.exit
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;-------------------------------------
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.cut:
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; copy the first 6 characters of path
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	mov	esi,ps_text_pointer
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	push	edi
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	mov	edi,ps_work_area_pointer
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	mov	ecx,6
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	rep	movsb
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; insert a line break '...'
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	mov	al,byte '.'
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	mov	ecx,3
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	rep	stosb
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	mov	ecx,edi
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; calculate the display length, in characters
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	pop	edi
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	movzx	ebx,word ps_font_size_x
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	movzx	eax,word ps_area_size_x
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	xor	edx,edx
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	div	ebx
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	sub	eax,9
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; eax - maximum length of display area, the number of characters
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	mov	esi,ps_temp_text_length
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	add	esi,ps_text_pointer
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	sub	esi,eax
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; esi - pointer of the last segment of the displayed text
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	mov	edi,ecx
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	mov	ecx,eax
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	rep	movsb
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	xor	eax,eax
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	stosb
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;-------------------------------------
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.exit:
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path_show_exit
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;*****************************************************************************
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;*****************************************************************************
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; draw event
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;*****************************************************************************
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;*****************************************************************************
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.draw:
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path_show_start
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;-------------------------------------
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	mov	ebx,ps_start_y
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	xor	ecx,ecx
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	or	ecx,0x80000000
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	mov	eax,ps_background_flag
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	and	eax,1b
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	shl	eax,30
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	add	ecx,eax
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	mov	eax,ps_font_number
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	and	eax,11b
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	shl	eax,28
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	add	ecx,eax
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	mov	eax,ps_font_color
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	and	eax,0xffffff
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	add	ecx,eax
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	mov	edx,ps_work_area_pointer
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	mov	eax,ps_background_color
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	and	eax,0xffffff
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	xor	esi,esi
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	mov	edi,eax
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	mcall	SF_DRAW_TEXT
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path_show_exit
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;*****************************************************************************