kolibrios/programs/develop/libraries/box_lib/trunk/progressbar.mac

macro use_progressbar
{
pb equ [ebp + 4 + 8*4]
align 16
progressbar_draw:
        pushad
				mov    ebp, esp				
; draw frame
        push   ebp
        mov    [.last_esp], esp
        mov    eax, pb
        mov    esi, [eax + PB_LEFT]
        mov    edi, [eax + PB_TOP]
        mov    ebp, [eax + PB_WIDTH]
        add    ebp, esi
				dec    ebp
        mov    esp, [eax + PB_HEIGHT]
        add    esp, edi
				dec    esp
        mov    edx, [eax + PB_FRAME_COLOR]
        mov    eax, 38
        mov    ebx, esi
        shl    ebx, 16
        add    ebx, ebp
        mov    ecx, edi
        shl    ecx, 16
        add    ecx, edi
        int    64
        mov    ecx, esp
        shl    ecx, 16
        add    ecx, esp
        int    64		
        mov    bx, si
        mov    ecx, edi
        shl    ecx, 16
        add    ecx, esp
        int    64		
        mov    ebx, ebp
        shl    ebx, 16
        add    ebx, ebp
        int    64			
        mov    esp, [.last_esp]
        pop    ebp
; if min > max then .skip
        mov    eax, pb
				mov    edx, [eax + PB_MAX]
				mov    ecx, [eax + PB_MIN]
				cmp    ecx, edx
				; jg     .skip
				jne    .min_no_eq_max
				dec    edx
.min_no_eq_max:				
; draw all progress rectangle
				call   get_progress_width
				mov    edi, eax
        mov    eax, pb				
        mov    ebx, [eax + PB_LEFT]
				inc    ebx
        shl    ebx, 16
        add    ebx, edi
        mov    ecx, [eax + PB_TOP]
				inc    ecx
        shl    ecx, 16
        add    ecx, [eax + PB_HEIGHT]
				dec    ecx
				dec    ecx
        mov    edx, [eax + PB_PROGRESS_COLOR]
				mov    eax, 13
        int    64
; draw last part of non-progress rectangle
; edi = pW, esi = W - 2 
        sub    esi, edi ; width
				shr    ebx, 16
        add    ebx, edi
        shl    ebx, 16
        add    ebx, esi
				mov    esi, pb
        mov    edx, [esi + PB_BACK_COLOR]
        int    64				
; .skip:
				popad
        ret    4
.last_esp dd 0


align 16
get_progress_width:
; pW = (W-2)(value - min) / (max - min)
        mov    esi, [eax + PB_WIDTH]
        dec    esi
        dec    esi
        mov    eax, [eax + PB_VALUE]
        sub    eax, ecx
        imul   eax, esi
        neg    ecx
        add    ecx, edx
        xor    edx, edx
        div    ecx
        ret


align 16
progressbar_progress:
        pushad
				mov    ebp, esp
; if min > max then .skip
        mov    eax, pb
				mov    edx, [eax + PB_MAX]
				mov    ecx, [eax + PB_MIN]
				cmp    ecx, edx
				; jg     .skip		
				jne    .min_no_eq_max1
				dec    edx
.min_no_eq_max1:	
				call   get_progress_width
				mov    edi, eax				
; increase value
        mov    eax, pb
				mov    edx, [eax + PB_MAX]
				mov    ecx, [eax + PB_VALUE]
				inc    ecx 
; if value > max then value = max
        cmp    ecx, edx
				jng    .next
				mov    ecx, edx
.next:		
		    mov    [eax + PB_VALUE], ecx
; draw new part of progress rectangle
        mov    eax, pb
				mov    ecx, [eax + PB_MIN]
				cmp    ecx, edx	
				jne    .min_no_eq_max2
				dec    edx
.min_no_eq_max2:	
        call   get_progress_width
				mov    esi, eax
; edi = last pW, esi = new pW				
        mov    eax, pb				
        mov    ebx, [eax + PB_LEFT]
				inc    ebx
			  add    ebx, edi	
        shl    ebx, 16
        add    ebx, esi
			  sub    ebx, edi
        mov    ecx, [eax + PB_TOP]
				inc    ecx
        shl    ecx, 16
        add    ecx, [eax + PB_HEIGHT]
				dec    ecx
				dec    ecx
        mov    edx, [eax + PB_PROGRESS_COLOR]
				mov    eax, 13
        int    64				
; .skip:
				popad
        ret    4
restore pb				
}