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SmeThreeD.c

/*
* $KK: SmeThreeD.c,v 0.3 92/11/04 xx:xx:xx keithley Exp $
*/

/***********************************************************
Copyright 1987, 1988 by Digital Equipment Corporation, Maynard, Massachusetts,
and the Massachusetts Institute of Technology, Cambridge, Massachusetts.
Copyright 1992, 1993 by Kaleb Keithley

                        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 names of Digital, MIT, or Kaleb 
Keithley 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.

******************************************************************/

#include "Xaw3dP.h"
#include <X11/Xlib.h>
#include <X11/StringDefs.h>
#include <X11/IntrinsicP.h>
#include <X11/Xaw3d/XawInit.h>
#include <X11/Xaw3d/ThreeDP.h>
#include <X11/Xaw3d/SimpleMenP.h>
#include <X11/Xaw3d/SmeThreeDP.h>
#include <X11/Xosdefs.h>

/* Initialization of defaults */

#define XtNtopShadowPixmap "topShadowPixmap"
#define XtCTopShadowPixmap "TopShadowPixmap"
#define XtNbottomShadowPixmap "bottomShadowPixmap"
#define XtCBottomShadowPixmap "BottomShadowPixmap"
#define XtNshadowed "shadowed"
#define XtCShadowed "Shadowed"

#define offset(field) XtOffsetOf(SmeThreeDRec, field)

static XtResource resources[] = {
    {XtNshadowWidth, XtCShadowWidth, XtRDimension, sizeof(Dimension),
      offset(sme_threeD.shadow_width), XtRImmediate, (XtPointer) 2},
    {XtNtopShadowPixel, XtCTopShadowPixel, XtRPixel, sizeof(Pixel),
      offset(sme_threeD.top_shadow_pixel), XtRString, XtDefaultForeground},
    {XtNbottomShadowPixel, XtCBottomShadowPixel, XtRPixel, sizeof(Pixel),
      offset(sme_threeD.bot_shadow_pixel), XtRString, XtDefaultForeground},
    {XtNtopShadowPixmap, XtCTopShadowPixmap, XtRPixmap, sizeof(Pixmap),
      offset(sme_threeD.top_shadow_pxmap), XtRImmediate, (XtPointer) NULL},
    {XtNbottomShadowPixmap, XtCBottomShadowPixmap, XtRPixmap, sizeof(Pixmap),
      offset(sme_threeD.bot_shadow_pxmap), XtRImmediate, (XtPointer) NULL},
    {XtNtopShadowContrast, XtCTopShadowContrast, XtRInt, sizeof(int),
      offset(sme_threeD.top_shadow_contrast), XtRImmediate, (XtPointer) 20},
    {XtNbottomShadowContrast, XtCBottomShadowContrast, XtRInt, sizeof(int),
      offset(sme_threeD.bot_shadow_contrast), XtRImmediate, (XtPointer) 40},
    {XtNuserData, XtCUserData, XtRPointer, sizeof(XtPointer),
      offset(sme_threeD.user_data), XtRPointer, (XtPointer) NULL},
    {XtNbeNiceToColormap, XtCBeNiceToColormap, XtRBoolean, sizeof(Boolean),
      offset(sme_threeD.be_nice_to_cmap), XtRImmediate, (XtPointer) True},
    {XtNshadowed, XtCShadowed, XtRBoolean, sizeof(Boolean),
      offset(sme_threeD.shadowed), XtRImmediate, (XtPointer) False},
    {XtNborderWidth, XtCBorderWidth, XtRDimension, sizeof(Dimension),
      XtOffsetOf(RectObjRec,rectangle.border_width), XtRImmediate,
      (XtPointer)0}
};

#undef offset

static void Initialize(), Destroy();
static void ClassPartInitialize(), _XawSme3dDrawShadows();
static Boolean SetValues();

SmeThreeDClassRec smeThreeDClassRec = {
    { /* core fields */
    /* superclass       */    (WidgetClass) &smeClassRec,
    /* class_name       */    "SmeThreeD",
    /* widget_size            */    sizeof(SmeThreeDRec),
    /* class_initialize       */    NULL,
    /* class_part_initialize  */    ClassPartInitialize,
    /* class_inited           */    FALSE,
    /* initialize       */    Initialize,
    /* initialize_hook        */    NULL,
    /* realize                */    NULL,
    /* 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                 */    XtInheritResize,
    /* expose                 */    NULL,
    /* 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      */  NULL,
    /* extension                */  NULL
    },
    { /* Menu Entry fields */
    /* highlight                */      XtInheritHighlight,
    /* unhighlight              */      XtInheritUnhighlight,
    /* notify                   */      XtInheritNotify,
    /* extension                */      NULL
    },
    { /* threeD fields */
    /* shadow draw              */      _XawSme3dDrawShadows
    }
};

WidgetClass smeThreeDObjectClass = (WidgetClass) &smeThreeDClassRec;

/****************************************************************
 *
 * Private Procedures
 *
 ****************************************************************/


#define shadowpm_width 8
#define shadowpm_height 8
static char shadowpm_bits[] = {
    0xaa, 0x55, 0xaa, 0x55, 0xaa, 0x55, 0xaa, 0x55};

static char mtshadowpm_bits[] = {
    0x92, 0x24, 0x49, 0x92, 0x24, 0x49, 0x92, 0x24};

static char mbshadowpm_bits[] = {
    0x6d, 0xdb, 0xb6, 0x6d, 0xdb, 0xb6, 0x6d, 0xdb};

/* ARGSUSED */
static void AllocTopShadowGC (w)
    Widget w;
{
    SmeThreeDObject     tdo = (SmeThreeDObject) w;
    Screen        *scn = XtScreenOfObject (w);
    XtGCMask            valuemask;
    XGCValues           myXGCV;

    if (tdo->sme_threeD.be_nice_to_cmap || DefaultDepthOfScreen (scn) == 1) {
      valuemask = GCTile | GCFillStyle;
      myXGCV.tile = tdo->sme_threeD.top_shadow_pxmap;
      myXGCV.fill_style = FillTiled;
    } else {
      valuemask = GCForeground;
      myXGCV.foreground = tdo->sme_threeD.top_shadow_pixel;
    }
    tdo->sme_threeD.top_shadow_GC = XtGetGC(w, valuemask, &myXGCV);
}

/* ARGSUSED */
static void AllocBotShadowGC (w)
    Widget w;
{
    SmeThreeDObject     tdo = (SmeThreeDObject) w;
    Screen        *scn = XtScreenOfObject (w);
    XtGCMask            valuemask;
    XGCValues           myXGCV;

    if (tdo->sme_threeD.be_nice_to_cmap || DefaultDepthOfScreen (scn) == 1) {
      valuemask = GCTile | GCFillStyle;
      myXGCV.tile = tdo->sme_threeD.bot_shadow_pxmap;
      myXGCV.fill_style = FillTiled;
    } else {
      valuemask = GCForeground;
      myXGCV.foreground = tdo->sme_threeD.bot_shadow_pixel;
    }
    tdo->sme_threeD.bot_shadow_GC = XtGetGC(w, valuemask, &myXGCV);
}

/* ARGSUSED */
static void AllocEraseGC (w)
    Widget w;
{
    Widget        parent = XtParent (w);
    SmeThreeDObject     tdo = (SmeThreeDObject) w;
    XtGCMask            valuemask;
    XGCValues           myXGCV;

    valuemask = GCForeground;
    myXGCV.foreground = parent->core.background_pixel;
    tdo->sme_threeD.erase_GC = XtGetGC(w, valuemask, &myXGCV);
}

/* ARGSUSED */
static void AllocTopShadowPixmap (new)
    Widget new;
{
    SmeThreeDObject     tdo = (SmeThreeDObject) new;
    Widget        parent = XtParent (new);
    Display       *dpy = XtDisplayOfObject (new);
    Screen        *scn = XtScreenOfObject (new);
    unsigned long top_fg_pixel = 0, top_bg_pixel = 0;
    char          *pm_data;
    Boolean       create_pixmap = FALSE;

    /*
     * I know, we're going to create two pixmaps for each and every
     * shadow'd widget.  Yeuck.  I'm semi-relying on server side
     * pixmap cacheing.
     */

    if (DefaultDepthOfScreen (scn) == 1) {
      top_fg_pixel = BlackPixelOfScreen (scn);
      top_bg_pixel = WhitePixelOfScreen (scn);
      pm_data = mtshadowpm_bits;
      create_pixmap = TRUE;
    } else if (tdo->sme_threeD.be_nice_to_cmap) {
      if (parent->core.background_pixel == WhitePixelOfScreen (scn)) {
          top_fg_pixel = WhitePixelOfScreen (scn);
          top_bg_pixel = grayPixel( BlackPixelOfScreen (scn), dpy, scn);
      } else if (parent->core.background_pixel == BlackPixelOfScreen (scn)) {
          top_fg_pixel = grayPixel( BlackPixelOfScreen (scn), dpy, scn);
          top_bg_pixel = WhitePixelOfScreen (scn);
      } else {
          top_fg_pixel = parent->core.background_pixel;
          top_bg_pixel = WhitePixelOfScreen (scn);
      }
#ifndef XAW_GRAY_BLKWHT_STIPPLES
      if (parent->core.background_pixel == WhitePixelOfScreen (scn) ||
          parent->core.background_pixel == BlackPixelOfScreen (scn)) {
          pm_data = mtshadowpm_bits;
       } else 
#endif
          pm_data = shadowpm_bits;

      create_pixmap = TRUE;
    }

    if (create_pixmap)
      tdo->sme_threeD.top_shadow_pxmap = XCreatePixmapFromBitmapData (dpy,
                  RootWindowOfScreen (scn),
                  pm_data,
                  shadowpm_width,
                  shadowpm_height,
                  top_fg_pixel,
                  top_bg_pixel,
                  DefaultDepthOfScreen (scn));
}

/* ARGSUSED */
static void AllocBotShadowPixmap (new)
    Widget new;
{
    SmeThreeDObject     tdo = (SmeThreeDObject) new;
    Widget        parent = XtParent (new);
    Display       *dpy = XtDisplayOfObject (new);
    Screen        *scn = XtScreenOfObject (new);
    unsigned long bot_fg_pixel = 0, bot_bg_pixel = 0;
    char          *pm_data;
    Boolean       create_pixmap = FALSE;

    if (DefaultDepthOfScreen (scn) == 1) {
      bot_fg_pixel = BlackPixelOfScreen (scn);
      bot_bg_pixel = WhitePixelOfScreen (scn);
      pm_data = mbshadowpm_bits;
      create_pixmap = TRUE;
    } else if (tdo->sme_threeD.be_nice_to_cmap) {
      if (parent->core.background_pixel == WhitePixelOfScreen (scn)) {
          bot_fg_pixel = grayPixel( WhitePixelOfScreen (scn), dpy, scn);
          bot_bg_pixel = BlackPixelOfScreen (scn);
      } else if (parent->core.background_pixel == BlackPixelOfScreen (scn)) {
          bot_fg_pixel = BlackPixelOfScreen (scn);
          bot_bg_pixel = grayPixel( BlackPixelOfScreen (scn), dpy, scn);
      } else {
          bot_fg_pixel = parent->core.background_pixel;
          bot_bg_pixel = BlackPixelOfScreen (scn);
      }
#ifndef XAW_GRAY_BLKWHT_STIPPLES
      if (parent->core.background_pixel == WhitePixelOfScreen (scn) ||
          parent->core.background_pixel == BlackPixelOfScreen (scn)) {
          pm_data = mbshadowpm_bits;
      } else
#endif
          pm_data = shadowpm_bits;

      create_pixmap = TRUE;
    }

    if (create_pixmap)
      tdo->sme_threeD.bot_shadow_pxmap = XCreatePixmapFromBitmapData (dpy,
                  RootWindowOfScreen (scn),
                  pm_data,
                  shadowpm_width,
                  shadowpm_height,
                  bot_fg_pixel,
                  bot_bg_pixel,
                  DefaultDepthOfScreen (scn));
}

/* ARGSUSED */
void XawSme3dComputeTopShadowRGB (new, xcol_out)
    Widget new;
    XColor *xcol_out;
{
    if (XtIsSubclass (new, smeThreeDObjectClass)) {
      SmeThreeDObject tdo = (SmeThreeDObject) new;
      Widget w = XtParent (new);
      XColor get_c;
      double contrast;
      Display *dpy = XtDisplayOfObject (new);
      Screen *scn = XtScreenOfObject (new);
      Colormap cmap = w->core.colormap;

      get_c.pixel = w->core.background_pixel;
      if (get_c.pixel == WhitePixelOfScreen (scn) ||
          get_c.pixel == BlackPixelOfScreen (scn)) {
          contrast = (100 - tdo->sme_threeD.top_shadow_contrast) / 100.0;
          xcol_out->red   = contrast * 65535.0;
          xcol_out->green = contrast * 65535.0;
          xcol_out->blue  = contrast * 65535.0;
      } else {
          contrast = 1.0 + tdo->sme_threeD.top_shadow_contrast / 100.0;
          XQueryColor (dpy, cmap, &get_c);
#define MIN(x,y) (unsigned short) (x < y) ? x : y
          xcol_out->red   = MIN (65535, (int) (contrast * (double) get_c.red));
          xcol_out->green = MIN (65535, (int) (contrast * (double) get_c.green));
          xcol_out->blue  = MIN (65535, (int) (contrast * (double) get_c.blue));
#undef MIN
      }
    } else
      xcol_out->red = xcol_out->green = xcol_out->blue = 0;
}

/* ARGSUSED */
static void AllocTopShadowPixel (new)
    Widget new;
{
    XColor set_c;
    SmeThreeDObject tdo = (SmeThreeDObject) new;
    Widget w = XtParent (new);
    Display *dpy = XtDisplayOfObject (new);
    Colormap cmap = w->core.colormap;

    XawSme3dComputeTopShadowRGB (new, &set_c);
    (void) XAllocColor (dpy, cmap, &set_c);
    tdo->sme_threeD.top_shadow_pixel = set_c.pixel;
}


/* ARGSUSED */
void XawSme3dComputeBottomShadowRGB (new, xcol_out)
    Widget new;
    XColor *xcol_out;
{
    if (XtIsSubclass (new, smeThreeDObjectClass)) {
      SmeThreeDObject tdo = (SmeThreeDObject) new;
      Widget w = XtParent (new);
      XColor get_c;
      double contrast;
      Display *dpy = XtDisplayOfObject (new);
      Screen *scn = XtScreenOfObject (new);
      Colormap cmap = w->core.colormap;

      get_c.pixel = w->core.background_pixel;
      if (get_c.pixel == WhitePixelOfScreen (scn) ||
          get_c.pixel == BlackPixelOfScreen (scn)) {
          contrast = tdo->sme_threeD.bot_shadow_contrast / 100.0;
          xcol_out->red   = contrast * 65535.0;
          xcol_out->green = contrast * 65535.0;
          xcol_out->blue  = contrast * 65535.0;
      } else {
          XQueryColor (dpy, cmap, &get_c);
          contrast = (100 - tdo->sme_threeD.bot_shadow_contrast) / 100.0;
          xcol_out->red   = contrast * get_c.red;
          xcol_out->green = contrast * get_c.green;
          xcol_out->blue  = contrast * get_c.blue;
      }
    } else
      xcol_out->red = xcol_out->green = xcol_out->blue = 0;
}

/* ARGSUSED */
static void AllocBotShadowPixel (new)
    Widget new;
{
    XColor set_c;
    SmeThreeDObject tdo = (SmeThreeDObject) new;
    Widget w = XtParent (new);
    Display *dpy = XtDisplayOfObject (new);
    Colormap cmap = w->core.colormap;

    XawSme3dComputeBottomShadowRGB (new, &set_c);
    (void) XAllocColor (dpy, cmap, &set_c);
    tdo->sme_threeD.bot_shadow_pixel = set_c.pixel;
}


/* ARGSUSED */
static void ClassPartInitialize (wc)
    WidgetClass   wc;
{
    SmeThreeDClassRec *tdwc = (SmeThreeDClassRec *) wc;
    SmeThreeDClassRec *super = 
      (SmeThreeDClassRec *) tdwc->rect_class.superclass;

    if (tdwc->sme_threeD_class.shadowdraw == XtInheritXawSme3dShadowDraw)
      tdwc->sme_threeD_class.shadowdraw = super->sme_threeD_class.shadowdraw;
}

/* ARGSUSED */
static void Initialize (request, new, args, num_args)
    Widget request, new;
    ArgList args;
    Cardinal *num_args;
{
    SmeThreeDObject     w = (SmeThreeDObject) new;
    Screen        *scr = XtScreenOfObject (new);

    if (w->sme_threeD.be_nice_to_cmap || DefaultDepthOfScreen (scr) == 1) {
      AllocTopShadowPixmap (new);
      AllocBotShadowPixmap (new);
    } else {
      if (w->sme_threeD.top_shadow_pixel == w->sme_threeD.bot_shadow_pixel) {
          AllocTopShadowPixel (new);
          AllocBotShadowPixel (new);
      }
      w->sme_threeD.top_shadow_pxmap = w->sme_threeD.bot_shadow_pxmap = 0;
    }
    AllocTopShadowGC (new);
    AllocBotShadowGC (new);
    AllocEraseGC (new);
}

static void Destroy (gw)
     Widget gw;
{
    SmeThreeDObject w = (SmeThreeDObject) gw;
    XtReleaseGC (gw, w->sme_threeD.top_shadow_GC);
    XtReleaseGC (gw, w->sme_threeD.bot_shadow_GC);
    XtReleaseGC (gw, w->sme_threeD.erase_GC);
    if (w->sme_threeD.top_shadow_pxmap)
      XFreePixmap (XtDisplayOfObject (gw), w->sme_threeD.top_shadow_pxmap);
    if (w->sme_threeD.bot_shadow_pxmap)
      XFreePixmap (XtDisplayOfObject (gw), w->sme_threeD.bot_shadow_pxmap);
}

/* ARGSUSED */
static Boolean SetValues (gcurrent, grequest, gnew, args, num_args)
    Widget gcurrent, grequest, gnew;
    ArgList args;
    Cardinal *num_args;
{
    SmeThreeDObject current = (SmeThreeDObject) gcurrent;
    SmeThreeDObject new = (SmeThreeDObject) gnew;
    Boolean redisplay = FALSE;
    Boolean alloc_top_pixel = FALSE;
    Boolean alloc_bot_pixel = FALSE;
    Boolean alloc_top_pixmap = FALSE;
    Boolean alloc_bot_pixmap = FALSE;

#if 0
    (*threeDWidgetClass->core_class.superclass->core_class.set_values) 
      (gcurrent, grequest, gnew, NULL, 0);
#endif
    if (new->sme_threeD.shadow_width != current->sme_threeD.shadow_width)
      redisplay = TRUE;
    if (new->sme_threeD.be_nice_to_cmap != current->sme_threeD.be_nice_to_cmap) {
      if (new->sme_threeD.be_nice_to_cmap) {
          alloc_top_pixmap = TRUE;
          alloc_bot_pixmap = TRUE;
      } else {
          alloc_top_pixel = TRUE;
          alloc_bot_pixel = TRUE;
      }
      redisplay = TRUE;
    }
    if (!new->sme_threeD.be_nice_to_cmap &&
      new->sme_threeD.top_shadow_contrast != current->sme_threeD.top_shadow_contrast)
      alloc_top_pixel = TRUE;
    if (!new->sme_threeD.be_nice_to_cmap &&
      new->sme_threeD.bot_shadow_contrast != current->sme_threeD.bot_shadow_contrast)
      alloc_bot_pixel = TRUE;
    if (alloc_top_pixel)
      AllocTopShadowPixel (gnew);
    if (alloc_bot_pixel)
      AllocBotShadowPixel (gnew);
    if (alloc_top_pixmap)
      AllocTopShadowPixmap (gnew);
    if (alloc_bot_pixmap)
      AllocBotShadowPixmap (gnew);
    if (!new->sme_threeD.be_nice_to_cmap &&
      new->sme_threeD.top_shadow_pixel != current->sme_threeD.top_shadow_pixel)
      alloc_top_pixel = TRUE;
    if (!new->sme_threeD.be_nice_to_cmap &&
      new->sme_threeD.bot_shadow_pixel != current->sme_threeD.bot_shadow_pixel)
      alloc_bot_pixel = TRUE;
    if (new->sme_threeD.be_nice_to_cmap) {
      if (alloc_top_pixmap) {
          XtReleaseGC (gcurrent, current->sme_threeD.top_shadow_GC);
          AllocTopShadowGC (gnew);
          redisplay = True;
      }
      if (alloc_bot_pixmap) {
          XtReleaseGC (gcurrent, current->sme_threeD.bot_shadow_GC);
          AllocBotShadowGC (gnew);
          redisplay = True;
      }
    } else {
      if (alloc_top_pixel) {
          if (new->sme_threeD.top_shadow_pxmap) {
            XFreePixmap (XtDisplayOfObject (gnew), new->sme_threeD.top_shadow_pxmap);
            new->sme_threeD.top_shadow_pxmap = (Pixmap) NULL;
          }
          XtReleaseGC (gcurrent, current->sme_threeD.top_shadow_GC);
          AllocTopShadowGC (gnew);
          redisplay = True;
      }
      if (alloc_bot_pixel) {
          if (new->sme_threeD.bot_shadow_pxmap) {
            XFreePixmap (XtDisplayOfObject (gnew), new->sme_threeD.bot_shadow_pxmap);
            new->sme_threeD.bot_shadow_pxmap = (Pixmap) NULL;
          }
          XtReleaseGC (gcurrent, current->sme_threeD.bot_shadow_GC);
          AllocBotShadowGC (gnew);
          redisplay = True;
      }
    }
    return (redisplay);
}

/* ARGSUSED */
static void 
_XawSme3dDrawShadows(gw)
    Widget gw;
{
    SmeThreeDObject tdo = (SmeThreeDObject) gw;
    SimpleMenuWidget smw = (SimpleMenuWidget) XtParent(gw);
    ThreeDWidget tdw = (ThreeDWidget) smw->simple_menu.threeD;
    Dimension s = tdo->sme_threeD.shadow_width;
    Dimension ps = tdw->threeD.shadow_width;
    XPoint pt[6];

    /* 
     * draw the shadows using the core part width and height, 
     * and the threeD part shadow_width.
     *
     * no point to do anything if the shadow_width is 0 or the
     * widget has not been realized.
     */ 
    if (s > 0 && XtIsRealized(gw))
    {
      Dimension   h = tdo->rectangle.height;
      Dimension   w = tdo->rectangle.width - ps;
      Dimension   x = tdo->rectangle.x + ps;
      Dimension   y = tdo->rectangle.y;
      Display           *dpy = XtDisplayOfObject(gw);
      Window            win = XtWindowOfObject(gw);
      GC          top, bot;

      if (tdo->sme_threeD.shadowed)
      {
          top = tdo->sme_threeD.top_shadow_GC;
          bot = tdo->sme_threeD.bot_shadow_GC;
      }
      else
          top = bot = tdo->sme_threeD.erase_GC;

      /* top-left shadow */
      pt[0].x = x;            pt[0].y = y + h;
      pt[1].x = x;            pt[1].y = y;
      pt[2].x = w;            pt[2].y = y;
      pt[3].x = w - s;  pt[3].y = y + s;
      pt[4].x = ps + s;       pt[4].y = y + s;
      pt[5].x = ps + s;       pt[5].y = y + h - s;
      XFillPolygon(dpy, win, top, pt, 6, Complex, CoordModeOrigin);

      /* bottom-right shadow */
/*    pt[0].x = x;            pt[0].y = y + h;  */
      pt[1].x = w;            pt[1].y = y + h;
/*    pt[2].x = w;            pt[2].y = y;            */
/*    pt[3].x = w - s;  pt[3].y = y + s;  */
      pt[4].x = w - s;  pt[4].y = y + h - s;
/*    pt[5].x = ps + s; pt[5].y = y + h - s;    */
      XFillPolygon(dpy, win, bot, pt, 6, Complex, CoordModeOrigin);
    }
}


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