; drawing code for aclock
;
; Copyright (c) 2003 Thomas Mathys
; killer@vantage.ch
;
; This program is free software; you can redistribute it and/or modify
; it under the terms of the GNU General Public License as published by
; the Free Software Foundation; either version 2 of the License, or
; (at your option) any later version.
;
; This program is distributed in the hope that it will be useful,
; but WITHOUT ANY WARRANTY; without even the implied warranty of
; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
; GNU General Public License for more details.
;
; You should have received a copy of the GNU General Public License
; along with this program; if not, write to the Free Software
; Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
;
%ifndef _DRAW_INC
%define _DRAW_INC
TMR1_FACTOR dd 0.45
TMR2_FACTOR dd 0.426315789
SECR_FACTOR dd 0.378947368
MINR_FACTOR dd 0.355263158
HOURR_FACTOR dd 0.189473684
DATE_FACTOR dd 0.1
monthNames:
db "Jan"
db "Feb"
db "Mar"
db "Apr"
db "May"
db "Jun"
db "Jul"
db "Aug"
db "Sep"
db "Oct"
db "Nov"
db "Dec"
;********************************************************************
; draws the clock
; input : nothing
; output : nothing
; destroys : nothing
;********************************************************************
drawClock:
%push drawClock_context
%stacksize flat
%assign %$localsize 0
%local i:dword, \
TMR1X:dword, \
TMR1Y:dword, \
TMR2X:dword, \
TMR2Y:dword, \
SECRX:dword, \
SECRY:dword, \
MINRX:dword, \
MINRY:dword, \
HOURRX:dword, \
HOURRY:dword, \
workwidth:dword, \
workheight:dword, \
foo:dword
enter %$localsize,0
pushad
pushfd
; get window dimensions
mov eax,MOS_SC_GETPROCESSINFO
mov ebx,procInfo
mov ecx,-1
int 0x40
; calculate work area size (width/height = ecx/edx)
; if the work area is too small (maybe the window is shaded)
; we don't draw anything.
mov eax,MOS_SC_WINDOWPROPERTIES
mov ebx,4 ; get skin height (eax)
int 0x40
mov ecx,[procInfo + MOS_PROCESSINFO.wndWidth]
sub ecx,MOS_WND_SKIN_BORDER_LEFT+MOS_WND_SKIN_BORDER_RIGHT
mov edx,[procInfo + MOS_PROCESSINFO.wndHeight]
sub edx,eax
sub edx,MOS_WND_SKIN_BORDER_BOTTOM
cmp ecx,0 ; width too small ?
jle .bye
cmp edx,0 ; height too small ?
jnle .continue
.bye:
jmp .byebye
.continue:
mov [workwidth],ecx ; save for later (for fpu)
mov [workheight],edx
; calculate center of clock (x/y = esi/edi)
mov esi,[procInfo + MOS_PROCESSINFO.wndWidth]
shr esi,1
mov edi,[procInfo + MOS_PROCESSINFO.wndHeight]
sub edi,MOS_WND_SKIN_BORDER_BOTTOM
sub edi,eax
shr edi,1
add edi,eax
; clear work area
pushad
mov ebx,(MOS_WND_SKIN_BORDER_LEFT)*0x10000 ; x start
or ebx,ecx ; width
inc ebx
mov ecx,eax ; y start
shl ecx,16 ; (=skin height)
or ecx,edx ; height
inc ecx
mov edx,[wndColors + MOS_WNDCOLORS.work]
mov eax,MOS_SC_DRAWBAR
int 0x40
popad
; calculate second hand radii
fild dword [workwidth]
fmul dword [SECR_FACTOR]
fstp dword [SECRX]
fild dword [workheight]
fmul dword [SECR_FACTOR]
fstp dword [SECRY]
; calculate minute hand radii
fild dword [workwidth]
fmul dword [MINR_FACTOR]
fstp dword [MINRX]
fild dword [workheight]
fmul dword [MINR_FACTOR]
fstp dword [MINRY]
; calculate hour hand radii
fild dword [workwidth]
fmul dword [HOURR_FACTOR]
fstp dword [HOURRX]
fild dword [workheight]
fmul dword [HOURR_FACTOR]
fstp dword [HOURRY]
; calculate tick mark radii
fild dword [workwidth]
fmul dword [TMR1_FACTOR]
fstp dword [TMR1X]
fild dword [workheight]
fmul dword [TMR1_FACTOR]
fstp dword [TMR1Y]
fild dword [workwidth]
fmul dword [TMR2_FACTOR]
fstp dword [TMR2X]
fild dword [workheight]
fmul dword [TMR2_FACTOR]
fstp dword [TMR2Y]
; get system clock (edx)
mov eax,MOS_SC_GETSYSCLOCK
int 0x40
mov edx,eax
; draw second hand
push edx
mov eax,edx
shr eax,16
call bcdbin
mov ecx,eax ; save seconds for later
push ecx
push eax
fpush32 0.104719755 ; 2*pi/60
push dword [SECRX]
push dword [SECRY]
push esi
push edi
call getHandCoords
mov eax,MOS_SC_DRAWLINE
shl ebx,16
or ebx,esi
shl ecx,16
or ecx,edi
mov edx,[wndColors + MOS_WNDCOLORS.workText]
int 0x40
pop ecx
pop edx
; draw minute hand
push edx
mov eax,edx
shr eax,8
call bcdbin
mov edx,60
mul edx
add eax,ecx
mov ecx,eax ; save for later
push ecx
push eax
fpush32 0.001745329 ; 2*pi/60/60
push dword [MINRX]
push dword [MINRY]
push esi
push edi
call getHandCoords
mov eax,MOS_SC_DRAWLINE
shl ebx,16
or ebx,esi
shl ecx,16
or ecx,edi
mov edx,[wndColors + MOS_WNDCOLORS.workText]
int 0x40
pop ecx
pop edx
; draw hour hand
push edx
mov eax,edx
call bcdbin
cmp eax,11 ; % 12 (just to be sure)
jnae .hoursok
sub eax,12
.hoursok:
mov edx,60*60
mul edx
add eax,ecx
push eax
fpush32 0.000145444 ; 2*pi/60/60/12
push dword [HOURRX]
push dword [HOURRY]
push esi
push edi
call getHandCoords
mov eax,MOS_SC_DRAWLINE
shl ebx,16
or ebx,esi
shl ecx,16
or ecx,edi
mov edx,[wndColors + MOS_WNDCOLORS.workText]
int 0x40
pop edx
; draw tick marks
mov dword [i],11 ; draw 12 marks
.drawtickmarks:
push dword [i] ; calculate start point
fpush32 0.523598776 ; 2*pi/12
push dword [TMR1X]
push dword [TMR1Y]
push esi
push edi
call getHandCoords
mov eax,ebx ; save in eax and edx
mov edx,ecx
push dword [i]
fpush32 0.523598776 ; 2*pi/12
push dword [TMR2X]
push dword [TMR2Y]
push esi
push edi
call getHandCoords
shl eax,16
shl edx,16
or ebx,eax ; ebx = x start and end
or ecx,edx ; ecx = y start and end
mov edx,[wndColors + MOS_WNDCOLORS.workText]
mov eax,MOS_SC_DRAWLINE
int 0x40
dec dword [i]
jns .drawtickmarks
%define DATE_WIDTH 48
; calculate text start position
mov eax,[procInfo+MOS_PROCESSINFO.wndWidth]
sub eax,DATE_WIDTH ; x = (wndwidth-textwidth)/2
shr eax,1 ; eax = x
fild dword [workheight] ; y = DATE_FACTOR*workheight...
fmul dword [DATE_FACTOR]
mov [foo],edi ; ... + y_clockcenter
fiadd dword [foo]
fistp dword [foo]
mov ebx,[foo] ; ebx = y
; draw text at all ?
cmp dword [workwidth],DATE_WIDTH ; text too wide ?
jb .goodbye
mov ecx,ebx ; text too high ?
add ecx,10-1
mov edx,[procInfo+MOS_PROCESSINFO.wndHeight]
sub edx,MOS_WND_SKIN_BORDER_BOTTOM
cmp ecx,edx
jnae .yousuck
.goodbye:
jmp .bye
.yousuck:
; ebx = (x << 16) | y
shl eax,16
or ebx,eax
; get date (edi)
mov eax,MOS_SC_GETDATE
int 0x40
mov edi,eax
; display month
mov eax,edi ; get month
shr eax,8
call bcdbin
; ebx contains already position
mov ecx,[wndColors+MOS_WNDCOLORS.workText]
lea edx,[monthNames-3+eax*2+eax]; -3 because eax = 1..12 =]
mov esi,3 ; text length
mov eax,MOS_SC_WRITETEXT
int 0x40
; display date
add ebx,MOS_DWORD(3*6+3,0)
mov eax,edi ; get date
shr eax,16
call bcdbin
mov edx,ebx ; position must be in edx
mov ebx,0x00020000 ; number, display two digits
mov ecx,eax ; number to display
mov esi,[wndColors+MOS_WNDCOLORS.workText]
mov eax,MOS_SC_WRITENUMBER
int 0x40
; display year. the way we avoid the y2k bug is even
; simpler, yet much better than in the last version:
; now we simply display the last two digits and let the
; user decide wether it's the year 1903 or 2003 =]
add edx,MOS_DWORD(2*6+3,0)
mov eax,edi ; get year
call bcdbin
mov ebx,0x00020000 ; number, display two digits
mov ecx,eax ; number to display
; edx contains already position
mov esi,[wndColors+MOS_WNDCOLORS.workText]
mov eax,MOS_SC_WRITENUMBER
int 0x40
.byebye:
popfd
popad
leave
ret
%pop
;**********************************************************
; bcdbin
; converts a 8 bit bcd number into a 32 bit binary number
;
; in al = 8 bit bcd number
; out eax = 32 bit binary number
; destroys dl,flags
;**********************************************************
bcdbin:
push edx
pushfd
mov dl,al ; save bcd number
shr al,4 ; convert upper nibble
mov ah,10
mul ah
and dl,15 ; add lower nibble
add al,dl
and eax,255 ; !
popfd
pop edx
ret
;********************************************************************
; getHandCoords
; calculates the end point of a hand
;
; input (on stack, push from top to bottom):
; ANGLE angle (integer)
; DEG2RAD conversion factor for ANGLE (32 bit real)
; RADIUSX x radius (32 bit real)
; RADIUSY y radius (32 bit real)
; CENTERX x center of the clock (integer)
; CENTERY y center of the clock (integer)
;
; output:
; ebx x coordinate in bits 0..15, bits 16..31 are zero
; ecx y coordinate in bits 0..15, bits 16..31 are zero
;
; destroys:
; nothing
;********************************************************************
getHandCoords:
ANGLE equ 28
DEG2RAD equ 24
RADIUSX equ 20
RADIUSY equ 16
CENTERX equ 12
CENTERY equ 8
enter 0,0
pushfd
fild dword [ebp+ANGLE] ; get angle
fmul dword [ebp+DEG2RAD] ; convert to radians
fsincos
fmul dword [ebp+RADIUSY] ; -y * radius + clockcy
fchs
fiadd dword [ebp+CENTERY]
fistp dword [ebp+CENTERY]
fmul dword [ebp+RADIUSX] ; x * radius + clockcx
fiadd dword [ebp+CENTERX]
fistp dword [ebp+CENTERX]
mov ebx,[ebp+CENTERX]
mov ecx,[ebp+CENTERY]
popfd
leave
ret 4*6
%endif