/* $Xorg: Clock.c,v 1.3 2000/08/17 19:54:12 cpqbld Exp $ */ /*********************************************************** Copyright 1987, 1988, 1998 The Open Group All Rights Reserved. The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. Except as contained in this notice, the name of The Open Group shall not be used in advertising or otherwise to promote the sale, use or other dealings in this Software without prior written authorization from The Open Group. Copyright 1987, 1988 by Digital Equipment Corporation, Maynard, Massachusetts. All Rights Reserved Permission to use, copy, modify, and distribute this software and its documentation for any purpose and without fee is hereby granted, provided that the above copyright notice appear in all copies and that both that copyright notice and this permission notice appear in supporting documentation, and that the name of Digital not be used in advertising or publicity pertaining to distribution of the software without specific, written prior permission. DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. ******************************************************************/ /* $XFree86: xc/programs/xclock/Clock.c,v 3.10 2001/07/25 15:05:17 dawes Exp $ */ #include #include #include #include "ClockP.h" #include #include #include #include #define Time_t time_t #ifdef XKB #include #endif /* Private Definitions */ #define VERTICES_IN_HANDS 6 /* to draw triangle */ #define PI 3.14159265358979 #define TWOPI (2. * PI) #define SECOND_HAND_FRACT 90 #define MINUTE_HAND_FRACT 70 #define HOUR_HAND_FRACT 40 #define HAND_WIDTH_FRACT 7 #define SECOND_WIDTH_FRACT 5 #define SECOND_HAND_TIME 30 #define ANALOG_SIZE_DEFAULT 164 #define max(a, b) ((a) > (b) ? (a) : (b)) #define min(a, b) ((a) < (b) ? (a) : (b)) #define abs(a) ((a) < 0 ? -(a) : (a)) /* Initialization of defaults */ #define offset(field) XtOffsetOf(ClockRec, clock.field) #define goffset(field) XtOffsetOf(WidgetRec, core.field) static XtResource resources[] = { {XtNwidth, XtCWidth, XtRDimension, sizeof(Dimension), goffset(width), XtRImmediate, (XtPointer) 0}, {XtNheight, XtCHeight, XtRDimension, sizeof(Dimension), goffset(height), XtRImmediate, (XtPointer) 0}, {XtNupdate, XtCInterval, XtRInt, sizeof(int), offset(update), XtRImmediate, (XtPointer) 60 }, {XtNforeground, XtCForeground, XtRPixel, sizeof(Pixel), offset(fgpixel), XtRString, XtDefaultForeground}, {XtNhand, XtCForeground, XtRPixel, sizeof(Pixel), offset(Hdpixel), XtRString, XtDefaultForeground}, {XtNhighlight, XtCForeground, XtRPixel, sizeof(Pixel), offset(Hipixel), XtRString, XtDefaultForeground}, {XtNutime, XtCBoolean, XtRBoolean, sizeof(Boolean), offset(utime), XtRImmediate, (XtPointer) FALSE}, {XtNanalog, XtCBoolean, XtRBoolean, sizeof(Boolean), offset(analog), XtRImmediate, (XtPointer) TRUE}, {XtNbrief, XtCBoolean, XtRBoolean, sizeof(Boolean), offset(brief), XtRImmediate, (XtPointer) FALSE}, {XtNchime, XtCBoolean, XtRBoolean, sizeof(Boolean), offset(chime), XtRImmediate, (XtPointer) FALSE }, {XtNpadding, XtCMargin, XtRInt, sizeof(int), offset(padding), XtRImmediate, (XtPointer) 8}, {XtNfont, XtCFont, XtRFontStruct, sizeof(XFontStruct *), offset(font), XtRString, XtDefaultFont}, {XtNbackingStore, XtCBackingStore, XtRBackingStore, sizeof (int), offset (backing_store), XtRString, "default"}, }; #undef offset #undef goffset static void ClassInitialize ( void ); static void Initialize ( Widget request, Widget new, ArgList args, Cardinal *num_args ); static void Realize ( Widget gw, XtValueMask *valueMask, XSetWindowAttributes *attrs ); static void Destroy ( Widget gw ); static void Resize ( Widget gw ); static void Redisplay ( Widget gw, XEvent *event, Region region ); static void clock_tic ( XtPointer client_data, XtIntervalId *id ); static void erase_hands ( ClockWidget w, struct tm *tm ); static void ClockAngle ( int tick_units, double *sinp, double *cosp ); static void DrawLine ( ClockWidget w, Dimension blank_length, Dimension length, int tick_units ); static void DrawHand ( ClockWidget w, Dimension length, Dimension width, int tick_units ); static void DrawSecond ( ClockWidget w, Dimension length, Dimension width, Dimension offset, int tick_units ); static void SetSeg ( ClockWidget w, int x1, int y1, int x2, int y2 ); static void DrawClockFace ( ClockWidget w ); static int round ( double x ); static Boolean SetValues ( Widget gcurrent, Widget grequest, Widget gnew, ArgList args, Cardinal *num_args ); ClockClassRec clockClassRec = { { /* core fields */ /* superclass */ (WidgetClass) &simpleClassRec, /* class_name */ "Clock", /* widget_size */ sizeof(ClockRec), /* class_initialize */ ClassInitialize, /* class_part_initialize */ NULL, /* class_inited */ FALSE, /* initialize */ Initialize, /* initialize_hook */ NULL, /* realize */ Realize, /* actions */ NULL, /* num_actions */ 0, /* resources */ resources, /* resource_count */ XtNumber(resources), /* xrm_class */ NULLQUARK, /* compress_motion */ TRUE, /* compress_exposure */ TRUE, /* compress_enterleave */ TRUE, /* visible_interest */ FALSE, /* destroy */ Destroy, /* resize */ Resize, /* expose */ Redisplay, /* set_values */ SetValues, /* set_values_hook */ NULL, /* set_values_almost */ XtInheritSetValuesAlmost, /* get_values_hook */ NULL, /* accept_focus */ NULL, /* version */ XtVersion, /* callback_private */ NULL, /* tm_table */ NULL, /* query_geometry */ XtInheritQueryGeometry, /* display_accelerator */ XtInheritDisplayAccelerator, /* extension */ NULL }, { /* simple fields */ /* change_sensitive */ XtInheritChangeSensitive }, { /* clock fields */ /* ignore */ 0 } }; WidgetClass clockWidgetClass = (WidgetClass) &clockClassRec; /**************************************************************** * * Private Procedures * ****************************************************************/ static void ClassInitialize(void) { XtAddConverter( XtRString, XtRBackingStore, XmuCvtStringToBackingStore, NULL, 0 ); } static char * TimeString (ClockWidget w, struct tm *tm) { if (w->clock.brief) { static char brief[5]; sprintf (brief, "%02d:%02d", tm->tm_hour, tm->tm_min); return brief; } else if (w->clock.utime) { static char utime[35]; Time_t tsec; tsec = time(NULL); sprintf (utime, "%10lu seconds since Epoch", (unsigned long)tsec); return utime; } return asctime (tm); } /* ARGSUSED */ static void Initialize (Widget request, Widget new, ArgList args, Cardinal *num_args) { ClockWidget w = (ClockWidget)new; XtGCMask valuemask; XGCValues myXGCV; int min_height, min_width; valuemask = GCForeground | GCBackground | GCFont | GCLineWidth; if (w->clock.font != NULL) myXGCV.font = w->clock.font->fid; else valuemask &= ~GCFont; /* use server default font */ min_width = min_height = ANALOG_SIZE_DEFAULT; if(!w->clock.analog) { char *str; struct tm tm; Time_t time_value; (void) time(&time_value); tm = *localtime(&time_value); str = TimeString (w, &tm); if (w->clock.font == NULL) w->clock.font = XQueryFont( XtDisplay(w), XGContextFromGC( DefaultGCOfScreen(XtScreen(w))) ); min_width = XTextWidth(w->clock.font, str, strlen(str)) + 2 * w->clock.padding; min_height = w->clock.font->ascent + w->clock.font->descent + 2 * w->clock.padding; } if (w->core.width == 0) w->core.width = min_width; if (w->core.height == 0) w->core.height = min_height; myXGCV.foreground = w->clock.fgpixel; myXGCV.background = w->core.background_pixel; if (w->clock.font != NULL) myXGCV.font = w->clock.font->fid; else valuemask &= ~GCFont; /* use server default font */ myXGCV.line_width = 0; w->clock.myGC = XtGetGC((Widget)w, valuemask, &myXGCV); valuemask = GCForeground | GCLineWidth ; myXGCV.foreground = w->core.background_pixel; w->clock.EraseGC = XtGetGC((Widget)w, valuemask, &myXGCV); myXGCV.foreground = w->clock.Hipixel; w->clock.HighGC = XtGetGC((Widget)w, valuemask, &myXGCV); valuemask = GCForeground; myXGCV.foreground = w->clock.Hdpixel; w->clock.HandGC = XtGetGC((Widget)w, valuemask, &myXGCV); if (w->clock.update <= 0) w->clock.update = 60; /* make invalid update's use a default */ w->clock.show_second_hand = (w->clock.update <= SECOND_HAND_TIME); w->clock.numseg = 0; w->clock.interval_id = 0; } static void Realize(Widget gw, XtValueMask *valueMask, XSetWindowAttributes *attrs) { ClockWidget w = (ClockWidget) gw; #ifdef notdef *valueMask |= CWBitGravity; attrs->bit_gravity = ForgetGravity; #endif switch (w->clock.backing_store) { case Always: case NotUseful: case WhenMapped: *valueMask |=CWBackingStore; attrs->backing_store = w->clock.backing_store; break; } (*clockWidgetClass->core_class.superclass->core_class.realize) (gw, valueMask, attrs); Resize(gw); } static void Destroy(Widget gw) { ClockWidget w = (ClockWidget) gw; if (w->clock.interval_id) XtRemoveTimeOut (w->clock.interval_id); XtReleaseGC (gw, w->clock.myGC); XtReleaseGC (gw, w->clock.HighGC); XtReleaseGC (gw, w->clock.HandGC); XtReleaseGC (gw, w->clock.EraseGC); } static void Resize(Widget gw) { ClockWidget w = (ClockWidget) gw; /* don't do this computation if window hasn't been realized yet. */ if (XtIsRealized(gw) && w->clock.analog) { /* need signed value since Dimension is unsigned */ int radius = ((int) min(w->core.width, w->core.height) - (int) (2 * w->clock.padding)) / 2; w->clock.radius = (Dimension) max (radius, 1); w->clock.second_hand_length = (int)(SECOND_HAND_FRACT * w->clock.radius) / 100; w->clock.minute_hand_length = (int)(MINUTE_HAND_FRACT * w->clock.radius) / 100; w->clock.hour_hand_length = (int)(HOUR_HAND_FRACT * w->clock.radius) / 100; w->clock.hand_width = (int)(HAND_WIDTH_FRACT * w->clock.radius) / 100; w->clock.second_hand_width = (int)(SECOND_WIDTH_FRACT * w->clock.radius) / 100; w->clock.centerX = w->core.width / 2; w->clock.centerY = w->core.height / 2; } } /* ARGSUSED */ static void Redisplay(Widget gw, XEvent *event, Region region) { ClockWidget w = (ClockWidget) gw; if (w->clock.analog) { if (w->clock.numseg != 0) erase_hands (w, (struct tm *) 0); DrawClockFace(w); } else { w->clock.prev_time_string[0] = '\0'; } clock_tic((XtPointer)w, (XtIntervalId)0); } /* ARGSUSED */ static void clock_tic(XtPointer client_data, XtIntervalId *id) { ClockWidget w = (ClockWidget)client_data; struct tm tm; Time_t time_value; struct timeval tv; char *time_ptr; register Display *dpy = XtDisplay(w); register Window win = XtWindow(w); X_GETTIMEOFDAY (&tv); if (id || !w->clock.interval_id) w->clock.interval_id = XtAppAddTimeOut( XtWidgetToApplicationContext( (Widget) w), (w->clock.update - 1) * 1000 + (1000000 - tv.tv_usec)/1000, clock_tic, (XtPointer)w ); time_value = tv.tv_sec; tm = *localtime(&time_value); /* * Beep on the half hour; double-beep on the hour. */ if (w->clock.chime == TRUE) { if (w->clock.beeped && (tm.tm_min != 30) && (tm.tm_min != 0)) w->clock.beeped = FALSE; if (((tm.tm_min == 30) || (tm.tm_min == 0)) && (!w->clock.beeped)) { w->clock.beeped = TRUE; #ifdef XKB if (tm.tm_min==0) { XkbStdBell(dpy,win,50,XkbBI_ClockChimeHour); XkbStdBell(dpy,win,50,XkbBI_RepeatingLastBell); } else { XkbStdBell(dpy,win,50,XkbBI_ClockChimeHalf); } #else XBell(dpy, 50); if (tm.tm_min == 0) XBell(dpy, 50); #endif } } if( w->clock.analog == FALSE ) { int clear_from; int i, len, prev_len; time_ptr = TimeString (w, &tm); len = strlen (time_ptr); if (time_ptr[len - 1] == '\n') time_ptr[--len] = '\0'; prev_len = strlen (w->clock.prev_time_string); for (i = 0; ((i < len) && (i < prev_len) && (w->clock.prev_time_string[i] == time_ptr[i])); i++); strcpy (w->clock.prev_time_string+i, time_ptr+i); XDrawImageString (dpy, win, w->clock.myGC, (1+w->clock.padding + XTextWidth (w->clock.font, time_ptr, i)), w->clock.font->ascent+w->clock.padding, time_ptr + i, len - i); /* * Clear any left over bits */ clear_from = XTextWidth (w->clock.font, time_ptr, len) + 2 + w->clock.padding; if (clear_from < (int)w->core.width) XFillRectangle (dpy, win, w->clock.EraseGC, clear_from, 0, w->core.width - clear_from, w->core.height); } else { /* * The second (or minute) hand is sec (or min) * sixtieths around the clock face. The hour hand is * (hour + min/60) twelfths of the way around the * clock-face. The derivation is left as an excercise * for the reader. */ /* * 12 hour clock. */ if(tm.tm_hour >= 12) tm.tm_hour -= 12; erase_hands (w, &tm); if (w->clock.numseg == 0 || tm.tm_min != w->clock.otm.tm_min || tm.tm_hour != w->clock.otm.tm_hour) { w->clock.segbuffptr = w->clock.segbuff; w->clock.numseg = 0; /* * Calculate the hour hand, fill it in with its * color and then outline it. Next, do the same * with the minute hand. This is a cheap hidden * line algorithm. */ DrawHand(w, w->clock.minute_hand_length, w->clock.hand_width, tm.tm_min * 12 ); if(w->clock.Hdpixel != w->core.background_pixel) XFillPolygon( dpy, win, w->clock.HandGC, w->clock.segbuff, VERTICES_IN_HANDS, Convex, CoordModeOrigin ); XDrawLines( dpy, win, w->clock.HighGC, w->clock.segbuff, VERTICES_IN_HANDS, CoordModeOrigin); w->clock.hour = w->clock.segbuffptr; DrawHand(w, w->clock.hour_hand_length, w->clock.hand_width, tm.tm_hour * 60 + tm.tm_min ); if(w->clock.Hdpixel != w->core.background_pixel) { XFillPolygon(dpy, win, w->clock.HandGC, w->clock.hour, VERTICES_IN_HANDS, Convex, CoordModeOrigin ); } XDrawLines( dpy, win, w->clock.HighGC, w->clock.hour, VERTICES_IN_HANDS, CoordModeOrigin ); w->clock.sec = w->clock.segbuffptr; } if (w->clock.show_second_hand == TRUE) { w->clock.segbuffptr = w->clock.sec; DrawSecond(w, w->clock.second_hand_length - 2, w->clock.second_hand_width, w->clock.minute_hand_length + 2, tm.tm_sec * 12 ); if(w->clock.Hdpixel != w->core.background_pixel) XFillPolygon( dpy, win, w->clock.HandGC, w->clock.sec, VERTICES_IN_HANDS -2, Convex, CoordModeOrigin ); XDrawLines( dpy, win, w->clock.HighGC, w->clock.sec, VERTICES_IN_HANDS-1, CoordModeOrigin ); } w->clock.otm = tm; } } static void erase_hands(ClockWidget w, struct tm *tm) { /* * Erase old hands. */ if(w->clock.numseg > 0) { Display *dpy; Window win; dpy = XtDisplay (w); win = XtWindow (w); if (w->clock.show_second_hand == TRUE) { XDrawLines(dpy, win, w->clock.EraseGC, w->clock.sec, VERTICES_IN_HANDS-1, CoordModeOrigin); if(w->clock.Hdpixel != w->core.background_pixel) { XFillPolygon(dpy, win, w->clock.EraseGC, w->clock.sec, VERTICES_IN_HANDS-2, Convex, CoordModeOrigin ); } } if(!tm || tm->tm_min != w->clock.otm.tm_min || tm->tm_hour != w->clock.otm.tm_hour) { XDrawLines( dpy, win, w->clock.EraseGC, w->clock.segbuff, VERTICES_IN_HANDS, CoordModeOrigin); XDrawLines( dpy, win, w->clock.EraseGC, w->clock.hour, VERTICES_IN_HANDS, CoordModeOrigin); if(w->clock.Hdpixel != w->core.background_pixel) { XFillPolygon( dpy, win, w->clock.EraseGC, w->clock.segbuff, VERTICES_IN_HANDS, Convex, CoordModeOrigin); XFillPolygon( dpy, win, w->clock.EraseGC, w->clock.hour, VERTICES_IN_HANDS, Convex, CoordModeOrigin); } } } } static float const Sines[] = { .000000, .008727, .017452, .026177, .034899, .043619, .052336, .061049, .069756, .078459, .087156, .095846, .104528, .113203, .121869, .130526, .139173, .147809, .156434, .165048, .173648, .182236, .190809, .199368, .207912, .216440, .224951, .233445, .241922, .250380, .258819, .267238, .275637, .284015, .292372, .300706, .309017, .317305, .325568, .333807, .342020, .350207, .358368, .366501, .374607, .382683, .390731, .398749, .406737, .414693, .422618, .430511, .438371, .446198, .453990, .461749, .469472, .477159, .484810, .492424, .500000, .507538, .515038, .522499, .529919, .537300, .544639, .551937, .559193, .566406, .573576, .580703, .587785, .594823, .601815, .608761, .615661, .622515, .629320, .636078, .642788, .649448, .656059, .662620, .669131, .675590, .681998, .688355, .694658, .700909, .707107 }; static float const Cosines[] = { 1.00000, .999962, .999848, .999657, .999391, .999048, .998630, .998135, .997564, .996917, .996195, .995396, .994522, .993572, .992546, .991445, .990268, .989016, .987688, .986286, .984808, .983255, .981627, .979925, .978148, .976296, .974370, .972370, .970296, .968148, .965926, .963630, .961262, .958820, .956305, .953717, .951057, .948324, .945519, .942641, .939693, .936672, .933580, .930418, .927184, .923880, .920505, .917060, .913545, .909961, .906308, .902585, .898794, .894934, .891007, .887011, .882948, .878817, .874620, .870356, .866025, .861629, .857167, .852640, .848048, .843391, .838671, .833886, .829038, .824126, .819152, .814116, .809017, .803857, .798636, .793353, .788011, .782608, .777146, .771625, .766044, .760406, .754710, .748956, .743145, .737277, .731354, .725374, .719340, .713250, .707107 }; static void ClockAngle(int tick_units, double *sinp, double *cosp) { int reduced, upper; reduced = tick_units % 90; upper = tick_units / 90; if (upper & 1) reduced = 90 - reduced; if ((upper + 1) & 2) { *sinp = Cosines[reduced]; *cosp = Sines[reduced]; } else { *sinp = Sines[reduced]; *cosp = Cosines[reduced]; } if (upper >= 2 && upper < 6) *cosp = -*cosp; if (upper >= 4) *sinp = -*sinp; } /* * DrawLine - Draws a line. * * blank_length is the distance from the center which the line begins. * length is the maximum length of the hand. * Tick_units is a number between zero and 12*60 indicating * how far around the circle (clockwise) from high noon. * * The blank_length feature is because I wanted to draw tick-marks around the * circle (for seconds). The obvious means of drawing lines from the center * to the perimeter, then erasing all but the outside most pixels doesn't * work because of round-off error (sigh). */ static void DrawLine(ClockWidget w, Dimension blank_length, Dimension length, int tick_units) { double dblank_length = (double)blank_length, dlength = (double)length; double cosangle, sinangle; int cx = w->clock.centerX, cy = w->clock.centerY, x1, y1, x2, y2; /* * Angles are measured from 12 o'clock, clockwise increasing. * Since in X, +x is to the right and +y is downward: * * x = x0 + r * sin(theta) * y = y0 - r * cos(theta) * */ ClockAngle(tick_units, &sinangle, &cosangle); /* break this out so that stupid compilers can cope */ x1 = cx + (int)(dblank_length * sinangle); y1 = cy - (int)(dblank_length * cosangle); x2 = cx + (int)(dlength * sinangle); y2 = cy - (int)(dlength * cosangle); SetSeg(w, x1, y1, x2, y2); } /* * DrawHand - Draws a hand. * * length is the maximum length of the hand. * width is the half-width of the hand. * Tick_units is a number between zero and 12*60 indicating * how far around the circle (clockwise) from high noon. * */ static void DrawHand(ClockWidget w, Dimension length, Dimension width, int tick_units) { double cosangle, sinangle; register double ws, wc; Position x, y, x1, y1, x2, y2; /* * Angles are measured from 12 o'clock, clockwise increasing. * Since in X, +x is to the right and +y is downward: * * x = x0 + r * sin(theta) * y = y0 - r * cos(theta) * */ ClockAngle(tick_units, &sinangle, &cosangle); /* * Order of points when drawing the hand. * * 1,4 * / \ * / \ * / \ * 2 ------- 3 */ wc = width * cosangle; ws = width * sinangle; SetSeg(w, x = w->clock.centerX + round(length * sinangle), y = w->clock.centerY - round(length * cosangle), x1 = w->clock.centerX - round(ws + wc), y1 = w->clock.centerY + round(wc - ws)); /* 1 ---- 2 */ /* 2 */ SetSeg(w, x1, y1, x2 = w->clock.centerX - round(ws - wc), y2 = w->clock.centerY + round(wc + ws)); /* 2 ----- 3 */ SetSeg(w, x2, y2, x, y); /* 3 ----- 1(4) */ } /* * DrawSecond - Draws the second hand (diamond). * * length is the maximum length of the hand. * width is the half-width of the hand. * offset is direct distance from center to tail end. * Tick_units is a number between zero and 12*60 indicating * how far around the circle (clockwise) from high noon. * */ static void DrawSecond(ClockWidget w, Dimension length, Dimension width, Dimension offset, int tick_units) { double cosangle, sinangle; register double ms, mc, ws, wc; register int mid; Position x, y; /* * Angles are measured from 12 o'clock, clockwise increasing. * Since in X, +x is to the right and +y is downward: * * x = x0 + r * sin(theta) * y = y0 - r * cos(theta) * */ ClockAngle(tick_units, &sinangle, &cosangle); /* * Order of points when drawing the hand. * * 1,5 * / \ * / \ * / \ * 2< >4 * \ / * \ / * \ / * - 3 * | * | * offset * | * | * - + center */ mid = (int) (length + offset) / 2; mc = mid * cosangle; ms = mid * sinangle; wc = width * cosangle; ws = width * sinangle; /*1 ---- 2 */ SetSeg(w, x = w->clock.centerX + round(length * sinangle), y = w->clock.centerY - round(length * cosangle), w->clock.centerX + round(ms - wc), w->clock.centerY - round(mc + ws) ); SetSeg(w, w->clock.centerX + round(offset *sinangle), w->clock.centerY - round(offset * cosangle), /* 2-----3 */ w->clock.centerX + round(ms + wc), w->clock.centerY - round(mc - ws)); w->clock.segbuffptr->x = x; w->clock.segbuffptr++->y = y; w->clock.numseg ++; } static void SetSeg(ClockWidget w, int x1, int y1, int x2, int y2) { w->clock.segbuffptr->x = x1; w->clock.segbuffptr++->y = y1; w->clock.segbuffptr->x = x2; w->clock.segbuffptr++->y = y2; w->clock.numseg += 2; } /* * Draw the clock face (every fifth tick-mark is longer * than the others). */ static void DrawClockFace(ClockWidget w) { register int i; register int delta = (int)(w->clock.radius - w->clock.second_hand_length) / 3; w->clock.segbuffptr = w->clock.segbuff; w->clock.numseg = 0; for (i = 0; i < 60; i++) DrawLine(w, ( (i % 5) == 0 ? w->clock.second_hand_length : (w->clock.radius - delta) ), w->clock.radius, i * 12); /* * Go ahead and draw it. */ XDrawSegments(XtDisplay(w), XtWindow(w), w->clock.myGC, (XSegment *) &(w->clock.segbuff[0]), w->clock.numseg/2); w->clock.segbuffptr = w->clock.segbuff; w->clock.numseg = 0; } static int round(double x) { return(x >= 0.0 ? (int)(x + .5) : (int)(x - .5)); } /* ARGSUSED */ static Boolean SetValues(Widget gcurrent, Widget grequest, Widget gnew, ArgList args, Cardinal *num_args) { ClockWidget current = (ClockWidget) gcurrent; ClockWidget new = (ClockWidget) gnew; Boolean redisplay = FALSE; XtGCMask valuemask; XGCValues myXGCV; /* first check for changes to clock-specific resources. We'll accept all the changes, but may need to do some computations first. */ if (new->clock.update != current->clock.update) { if (current->clock.interval_id) XtRemoveTimeOut (current->clock.interval_id); if (XtIsRealized( (Widget) new)) new->clock.interval_id = XtAppAddTimeOut( XtWidgetToApplicationContext(gnew), new->clock.update*1000, clock_tic, (XtPointer)gnew); new->clock.show_second_hand =(new->clock.update <= SECOND_HAND_TIME); } if (new->clock.padding != current->clock.padding) redisplay = TRUE; if (new->clock.analog != current->clock.analog) redisplay = TRUE; if (new->clock.font != current->clock.font) redisplay = TRUE; if ((new->clock.fgpixel != current->clock.fgpixel) || (new->core.background_pixel != current->core.background_pixel)) { valuemask = GCForeground | GCBackground | GCFont | GCLineWidth; myXGCV.foreground = new->clock.fgpixel; myXGCV.background = new->core.background_pixel; myXGCV.font = new->clock.font->fid; myXGCV.line_width = 0; XtReleaseGC (gcurrent, current->clock.myGC); new->clock.myGC = XtGetGC(gcurrent, valuemask, &myXGCV); redisplay = TRUE; } if (new->clock.Hipixel != current->clock.Hipixel) { valuemask = GCForeground | GCLineWidth; myXGCV.foreground = new->clock.Hipixel; myXGCV.font = new->clock.font->fid; myXGCV.line_width = 0; XtReleaseGC (gcurrent, current->clock.HighGC); new->clock.HighGC = XtGetGC((Widget)gcurrent, valuemask, &myXGCV); redisplay = TRUE; } if (new->clock.Hdpixel != current->clock.Hdpixel) { valuemask = GCForeground; myXGCV.foreground = new->clock.Hdpixel; XtReleaseGC (gcurrent, current->clock.HandGC); new->clock.HandGC = XtGetGC((Widget)gcurrent, valuemask, &myXGCV); redisplay = TRUE; } if (new->core.background_pixel != current->core.background_pixel) { valuemask = GCForeground | GCLineWidth; myXGCV.foreground = new->core.background_pixel; myXGCV.line_width = 0; XtReleaseGC (gcurrent, current->clock.EraseGC); new->clock.EraseGC = XtGetGC((Widget)gcurrent, valuemask, &myXGCV); redisplay = TRUE; } return (redisplay); }