Usenet 1994 October/usenetsourcesnewsgroupsinfomagicoctober1994disk2.iso/misc/volume34/imagemagick/part15

Text File | 1992-12-14 | 59KB | 1,923 lines

Newsgroups: comp.sources.misc
From: [e-mail] (John Cristy)
Subject:  v34i043:  imagemagick - X11 image processing and display v2.2, Part15/26
Message-ID: <[e-mail]>
X-Md4-Signature: 1086d1438ed16b38f0222734314e8700
Date: Tue, 15 Dec 1992 03:53:06 GMT
Approved: [e-mail]

Submitted-by: [e-mail] (John Cristy)
Posting-number: Volume 34, Issue 43
Archive-name: imagemagick/part15
Environment: UNIX, VMS, X11, SGI, DEC, Cray, Sun, Vax

#!/bin/sh
# this is Part.15 (part 15 of a multipart archive)
# do not concatenate these parts, unpack them in order with /bin/sh
# file ImageMagick/X.c continued
#
if test ! -r _shar_seq_.tmp; then
    echo 'Please unpack part 1 first!'
    exit 1
fi
(read Scheck
 if test "$Scheck" != 15; then
    echo Please unpack part "$Scheck" next!
    exit 1
 else
    exit 0
 fi
) < _shar_seq_.tmp || exit 1
if test ! -f _shar_wnt_.tmp; then
    echo 'x - still skipping ImageMagick/X.c'
else
echo 'x - continuing file ImageMagick/X.c'
sed 's/^X//' << 'SHAR_EOF' >> 'ImageMagick/X.c' &&
X      (image->comments == (char *) NULL))
X    {
X      Warning("unable to allocate image","memory allocation error");
X      DestroyImage(image);
X      return((Image *) NULL);
X    }
X  (void) sprintf(image->comments,"\n  Imported from text file:  %s\n",
X    image->filename);
X  /*
X    Create colormap.
X  */
X  image->colors=2;
X  image->colormap=(ColorPacket *) malloc(image->colors*sizeof(ColorPacket));
X  if (image->colormap == (ColorPacket *) NULL)
X    {
X      Warning("unable to read image","memory allocation failed");
X      DestroyImage(image);
X      return((Image *) NULL);
X    }
X  image->colormap[0].red=pixel_info.background_color.red >> 8;
X  image->colormap[0].green=pixel_info.background_color.green >> 8;
X  image->colormap[0].blue=pixel_info.background_color.blue >> 8;
X  image->colormap[1].red=pixel_info.foreground_color.red >> 8;
X  image->colormap[1].green=pixel_info.foreground_color.green >> 8;
X  image->colormap[1].blue=pixel_info.foreground_color.blue >> 8;
X  /*
X    Initialize text image to background color.
X  */
X  background_color.red=image->colormap[0].red;
X  background_color.green=image->colormap[0].green;
X  background_color.blue=image->colormap[0].blue;
X  background_color.index=0;
X  background_color.length=0;
X  p=image->pixels;
X  for (i=0; i < image->packets; i++)
X    *p++=background_color;
X  /*
X    Annotate the text image.
X  */
X  XGetAnnotateInfo(&annotate_info);
X  annotate_info.font_info=font_info;
X  annotate_info.text=(char *)
X    malloc((image->columns/Max(font_info->min_bounds.width,1)+2)*sizeof(char));
X  if (annotate_info.text == (char *) NULL)
X    {
X      Warning("unable to read image","memory allocation failed");
X      DestroyImage(image);
X      return((Image *) NULL);
X    }
X  image->colormap[0].red=pixel_info.background_color.red >> 8;
X  annotate_info.height=font_info->ascent+font_info->descent;
X  x=0;
X  y=0;
X  text_status=fgets(text,sizeof(text),image->file);
X  if ((int) strlen(text) > 0)
X    text[strlen(text)-1]='\0';
X  while (text_status != (char *) NULL)
X  {
X    *annotate_info.text='\0';
X    if (*text != '\0')
X      {
X        /*
X          Compute width of text.
X        */
X        (void) strcpy(annotate_info.text,text);
X        annotate_info.width=
X          XTextWidth(font_info,annotate_info.text,strlen(annotate_info.text));
X        if ((annotate_info.width+4) >= image->columns)
X          {
X            /*
X              Reduce text until width is within bounds.
X            */
X            i=strlen(annotate_info.text);
X            for (; (annotate_info.width+4) >= image->columns; i--)
X              annotate_info.width=XTextWidth(font_info,annotate_info.text,
X                (unsigned int) i);
X            annotate_info.text[i]='\0';
X            while ((i > 0) && !isspace(annotate_info.text[i]))
X              i--;
X            if (i > 0)
X              annotate_info.text[i]='\0';
X            annotate_info.width=XTextWidth(font_info,annotate_info.text,
X              strlen(annotate_info.text));
X          }
X        /*
X          Annotate image with text.
X        */
X        (void) sprintf(annotate_info.geometry,"%ux%u%+d%+d\0",
X          annotate_info.width,annotate_info.height,x+2,y+2);
X        status=XAnnotateImage(display,&image_window,&annotate_info,False,image);
X        if (status == 0)
X          {
X            Warning("unable to annotate image","memory allocation error");
X            DestroyImage(image);
X            return((Image *) NULL);
X          }
X      }
X    /*
X      Get next string.
X    */
X    if (strlen(text) != strlen(annotate_info.text))
X      (void) strcpy(text,text+strlen(annotate_info.text)+1);
X    else
X      {
X        text_status=fgets(text,sizeof(text),image->file);
X        if ((int) strlen(text) > 0)
X          text[strlen(text)-1]='\0';
X      }
X    y+=annotate_info.height;
X    if ((text_status != (char *) NULL) &&
X        ((y+font_info->ascent+4) > image->rows))
X      {
X        /*
X          Page is full-- allocate next image structure.
X        */
X        image->orphan=True;
X        image->next=CopyImage(image,image->columns,image->rows,False);
X        image->orphan=False;
X        if (image->next == (Image *) NULL)
X          {
X            DestroyImages(image);
X            return((Image *) NULL);
X          }
X        image->next->last=image;
X        image=image->next;
X        /*
X          Initialize text image to background color.
X        */
X        p=image->pixels;
X        for (i=0; i < image->packets; i++)
X          *p++=background_color;
X        y=0;
X      }
X  }
X  /*
X    Free resources.
X  */
X  (void) free((char *) annotate_info.text);
X  XFreeFont(display,font_info);
X  XFree((void *) visual_info);
X  /*
X    Force to runlength-encoded PseudoClass image.
X  */
X  while (image->last != (Image *) NULL)
X  {
X    image->class=PseudoClass;
X    image=image->last;
X  }
X  image->class=PseudoClass;
X  CloseImage(image);
X  XCloseDisplay(display);
X  return(image);
}
X
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   R e a d X I m a g e                                                       %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  Procedure ReadXImage reads an image from an X window.
%
%  The format of the ReadXImage routine is:
%
%      image=ReadXImage(filename,server_name,frame,screen,borders)
%
%  A description of each parameter follows:
%
%    o image: Specifies a pointer to the Image structure.
%
%    o filename: Specifies the name of the image to read.
%
%    o server_name: Specifies the name of the X server to read image from.
%
%    o frame: Specifies whether to include the window manager frame with the
%      image.
%
%    o screen: Specifies whether the GetImage request used to obtain the image
%      should be done on the root window, rather than directly on the specified
%      window.
%
%    o borders: Specifies whether borders pixels are to be saved with
%      the image.
%
%
*/
Image *ReadXImage(filename,server_name,frame,screen,borders)
char
X  *filename,
X  *server_name;
X
unsigned int
X  frame,
X  screen,
X  borders;
{
X  Display
X    *display;
X
X  Image
X    *image;
X
X  int
X    display_width,
X    display_height,
X    number_colors,
X    status,
X    x,
X    y;
X
X  register int
X    i;
X
X  register RunlengthPacket
X    *p;
X
X  register unsigned long
X    pixel;
X
X  unsigned int
X    d;
X
X  Window
X    client_window,
X    root_window,
X    target_window;
X
X  XColor
X    *colors;
X
X  XImage
X    *ximage;
X
X  XRectangle
X    clip_info;
X
X  XTextProperty
X    window_name;
X
X  XWindowAttributes
X    client_attributes,
X    target_attributes;
X
X  /*
X    Open X server connection.
X  */
X  display=XOpenDisplay(server_name);
X  if (display == (Display *) NULL)
X    {
X      Warning("unable to connect to X server",XDisplayName(server_name));
X      return((Image *) NULL);
X    }
X  /*
X    Set our forgiving error handler.
X  */
X  XSetErrorHandler(XError);
X  /*
X    Select image window.
X  */
X  clip_info.x=0;
X  clip_info.y=0;
X  clip_info.width=0;
X  clip_info.height=0;
X  root_window=XRootWindow(display,XDefaultScreen(display));
X  target_window=(Window) NULL;
X  if ((filename != (char *) NULL) && (*filename != '\0'))
X    if (Latin1Compare(filename,"root") == 0)
X      target_window=root_window;
X    else
X      {
X        if (isdigit(*filename))
X          target_window=XWindowByID(display,root_window,
X            (Window) strtol(filename,(char **) NULL,0));
X        if (target_window == (Window) NULL)
X          target_window=XWindowByName(display,root_window,filename);
X        if (target_window == (Window) NULL)
X          Warning("No window with specified id exists",filename);
X      }
X  if (target_window == (Window) NULL)
X    target_window=XSelectWindow(display,&clip_info);
X  /*
X    Inform the user not to alter the screen.
X  */
X  XBell(display,0);
X  /*
X    Get attributes of the target & client window.
X  */
X  client_window=target_window;
X  if (target_window != root_window)
X    if (XGetGeometry(display,target_window,&root_window,&x,&x,&d,&d,&d,&d) != 0)
X      {
X        /*
X          Get client window.
X        */
X        client_window=XClientWindow(display,target_window);
X        if (!frame)
X          target_window=client_window;
X      }
X  status=XGetWindowAttributes(display,target_window,&target_attributes);
X  status|=XGetWindowAttributes(display,client_window,&client_attributes);
X  if (status == 0)
X    {
X      Warning("unable to get target window attributes",(char *) NULL);
X      return((Image *) NULL);
X    }
X  /*
X    Initialize X image structure.
X  */
X  if ((clip_info.width*clip_info.height) > (unsigned int) 0)
X    ximage=XGetImage(display,root_window,clip_info.x,clip_info.y,
X      clip_info.width,clip_info.height,AllPlanes,ZPixmap);
X  else
X    {
X      unsigned int
X        height,
X        width;
X
X      Window
X        child;
X
X      /*
X        Image by window id.
X      */
X      XTranslateCoordinates(display,target_window,root_window,0,0,&x,&y,&child);
X      target_attributes.x=x;
X      target_attributes.y=y;
X      width=target_attributes.width;
X      height=target_attributes.height;
X      if (borders)
X        {
X          /*
X            Do not include border in image.
X          */
X          x-=target_attributes.border_width;
X          y-=target_attributes.border_width;
X          width+=2*target_attributes.border_width;
X          height+=2*target_attributes.border_width;
X        }
X      /*
X        clip to window
X      */
X      if (x < 0)
X        {
X          width+=x;
X          x=0;
X        }
X      if (y < 0)
X        {
X          height+=y;
X          y=0;
X        }
X      display_width=DisplayWidth(display,XDefaultScreen(display));
X      display_height=DisplayHeight(display,XDefaultScreen(display));
X      if ((x+(int) width) > display_width)
X        width=display_width-x;
X      if ((y+(int) height) > display_height)
X        height=display_height-y;
X      /*
X        Get image from window with XGetImage.
X      */
X      if (screen)
X        ximage=
X          XGetImage(display,root_window,x,y,width,height,AllPlanes,ZPixmap);
X      else
X        {
X          x-=target_attributes.x;
X          y-=target_attributes.y;
X          ximage=XGetImage(display,target_window,x,y,width,height,AllPlanes,
X            ZPixmap);
X        }
X    }
X  if (ximage == (XImage *) NULL)
X    {
X      Warning("unable to read image",(char *) NULL);
X      return((Image *) NULL);
X    }
X  /*
X    Obtain the window colormap from the client of the target window.
X  */
X  number_colors=XReadColormap(display,&client_attributes,&colors);
X  XBell(display,0);
X  XBell(display,0);
X  XFlush(display);
X  /*
X    Allocate image structure.
X  */
X  image=AllocateImage("X");
X  if (image == (Image *) NULL)
X    {
X      Warning("unable to read image","memory allocation failed");
X      return((Image *) NULL);
X    }
X  /*
X    Convert X image to MIFF format.
X  */
X  if (XGetWMName(display,target_window,&window_name) != 0)
X    {
X      if ((filename != (char *) NULL) && (*filename == '\0'))
X        (void) strcpy(image->filename,(char *) window_name.value);
X      /*
X        Initial image comment.
X      */
X      image->comments=(char *)
X        malloc((strlen((char *) window_name.value)+2048)*sizeof(char));
X      if (image->comments == (char *) NULL)
X        {
X          Warning("unable to read image","memory allocation failed");
X          DestroyImage(image);
X          return((Image *) NULL);
X        }
X      (void) sprintf(image->comments,"\n  Imported from X11 window:  %s\n\0",
X        window_name.value);
X    }
X  if ((target_attributes.visual->class != TrueColor) &&
X      (target_attributes.visual->class != DirectColor))
X    image->class=PseudoClass;
X  image->columns=ximage->width;
X  image->rows=ximage->height;
X  image->packets=image->columns*image->rows;
X  image->pixels=(RunlengthPacket *)
X    malloc((unsigned int) image->packets*sizeof(RunlengthPacket));
X  if (image->pixels == (RunlengthPacket *) NULL)
X    {
X      Warning("unable to read image","memory allocation failed");
X      DestroyImage(image);
X      return((Image *) NULL);
X    }
X  p=image->pixels;
X  switch (image->class)
X  {
X    case DirectClass:
X    {
X      register unsigned long
X        color,
X        index;
X
X      unsigned long
X        blue_mask,
X        blue_shift,
X        green_mask,
X        green_shift,
X        red_mask,
X        red_shift;
X
X      /*
X        Determine shift and mask for red, green, and blue.
X      */
X      red_mask=target_attributes.visual->red_mask;
X      red_shift=0;
X      while ((red_mask & 0x01) == 0)
X      {
X        red_mask>>=1;
X        red_shift++;
X      }
X      green_mask=target_attributes.visual->green_mask;
X      green_shift=0;
X      while ((green_mask & 0x01) == 0)
X      {
X        green_mask>>=1;
X        green_shift++;
X      }
X      blue_mask=target_attributes.visual->blue_mask;
X      blue_shift=0;
X      while ((blue_mask & 0x01) == 0)
X      {
X        blue_mask>>=1;
X        blue_shift++;
X      }
X      /*
X        Convert X image to DirectClass packets.
X      */
X      if ((number_colors > 0) &&
X          (target_attributes.visual->class == DirectColor))
X        for (y=0; y < image->rows; y++)
X        {
X          for (x=0; x < image->columns; x++)
X          {
X            pixel=XGetPixel(ximage,x,y);
X            index=(pixel >> red_shift) & red_mask;
X            p->red=(unsigned char) (colors[index].red >> 8);
X            index=(pixel >> green_shift) & green_mask;
X            p->green=(unsigned char) (colors[index].green >> 8);
X            index=(pixel >> blue_shift) & blue_mask;
X            p->blue=(unsigned char) (colors[index].blue >> 8);
X            p->index=0;
X            p->length=0;
X            p++;
X          }
X        }
X      else
X        for (y=0; y < image->rows; y++)
X          for (x=0; x < image->columns; x++)
X          {
X            pixel=XGetPixel(ximage,x,y);
X            color=(pixel >> red_shift) & red_mask;
X            p->red=(unsigned char)
X              ((((unsigned long) color*65535)/red_mask) >> 8);
X            color=(pixel >> green_shift) & green_mask;
X            p->green=(unsigned char)
X              ((((unsigned long) color*65535)/green_mask) >> 8);
X            color=(pixel >> blue_shift) & blue_mask;
X            p->blue=(unsigned char)
X              ((((unsigned long) color*65535)/blue_mask) >> 8);
X            p->index=0;
X            p->length=0;
X            p++;
X          }
X      break;
X    }
X    case PseudoClass:
X    {
X      register unsigned short
X        index;
X
X      /*
X        Create colormap.
X      */
X      image->colors=number_colors;
X      image->colormap=(ColorPacket *) malloc(image->colors*sizeof(ColorPacket));
X      if (image->colormap == (ColorPacket *) NULL)
X        {
X          Warning("unable to read image","memory allocation failed");
X          DestroyImage(image);
X          return((Image *) NULL);
X        }
X      for (i=0; i < image->colors; i++)
X      {
X        image->colormap[colors[i].pixel].red=colors[i].red >> 8;
X        image->colormap[colors[i].pixel].green=colors[i].green >> 8;
X        image->colormap[colors[i].pixel].blue=colors[i].blue >> 8;
X      }
X      /*
X        Convert X image to PseudoClass packets.
X      */
X      for (y=0; y < image->rows; y++)
X        for (x=0; x < image->columns; x++)
X        {
X          pixel=XGetPixel(ximage,x,y);
X          index=(unsigned short) pixel;
X          p->red=image->colormap[index].red;
X          p->green=image->colormap[index].green;
X          p->blue=image->colormap[index].blue;
X          p->index=index;
X          p->length=0;
X          p++;
X        }
X      CompressColormap(image);
X      break;
X    }
X  }
X  /*
X    Free image and colormap.
X  */
X  XDestroyImage(ximage);
X  if (number_colors > 0)
X    (void) free((char *) colors);
X  XCloseDisplay(display);
X  return(image);
}
X
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%  R e a d X C I m a g e                                                      %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  Function ReadXCImage creates a constant image and initializes to the
%  background color of the X server and returns it.  It allocates the memory
%  necessary for the new Image structure and returns a pointer to the new
%  image.
%
%  The format of the ReadXCImage routine is:
%
%      image=ReadXCImage(filename,server_name,density)
%
%  A description of each parameter follows:
%
%    o image:  Function ReadXCImage returns a pointer to the image after
%      creating it. A null image is returned if there is a a memory shortage
%      or if the image cannot be read.
%
%    o filename: Specifies the name of the image to read.
%
%    o server_name: Specifies the name of the X server to read fonts from.
%
%    o density: Specifies the vertical and horizonal density of the image.
%
%
*/
Image *ReadXCImage(filename,server_name,geometry)
char
X  *filename,
X  *server_name,
X  *geometry;
{
X  char
X    *resource_value;
X
X  Display
X    *display;
X
X  Image
X    *image;
X
X  int
X    x,
X    y;
X
X  register int
X    i;
X
X  register RunlengthPacket
X    *p;
X
X  unsigned int
X    height,
X    width;
X
X  XPixelInfo
X    pixel_info;
X
X  XResourceInfo
X    resource_info;
X
X  XrmDatabase
X    resource_database,
X    server_database;
X
X  XStandardColormap
X    map_info;
X
X  XVisualInfo
X    *visual_info;
X
X  /*
X    Allocate image structure.
X  */
X  image=AllocateImage("XC");
X  if (image == (Image *) NULL)
X    return((Image *) NULL);
X  (void) strcpy(image->filename,filename);
X  /*
X    Open X server connection.
X  */
X  display=XOpenDisplay(server_name);
X  if (display == (Display *) NULL)
X    {
X      Warning("unable to connect to X server",XDisplayName(server_name));
X      return((Image *) NULL);
X    }
X  /*
X    Set our forgiving error handler.
X  */
X  XSetErrorHandler(XError);
X  /*
X    Initialize resource database.
X  */
X  XrmInitialize();
X  resource_database=XrmGetDatabase(display);
X  resource_value=XResourceManagerString(display);
X  if (resource_value == (char *) NULL)
X    resource_value="";
X  server_database=XrmGetStringDatabase(resource_value);
X  XrmMergeDatabases(server_database,&resource_database);
X  /*
X    Get user defaults from X resource database.
X  */
X  XGetResourceInfo(resource_database,application_name,&resource_info);
X  /*
X    Initialize visual info.
X  */
X  visual_info=XBestVisualInfo(display,"default",(char *) NULL,
X    (XStandardColormap *) NULL);
X  if (visual_info == (XVisualInfo *) NULL)
X    {
X      Warning("unable to get visual",resource_info.visual_type);
X      return((Image *) NULL);
X    }
X  /*
X    Determine background foreground colors.
X  */
X  map_info.colormap=XDefaultColormap(display,visual_info->screen);
X  XGetPixelInfo(display,visual_info,&map_info,&resource_info,(Image *) NULL,
X    &pixel_info);
X  /*
X    Initialize Image structure.
X  */
X  width=512;
X  height=512;
X  if (geometry != (char *) NULL)
X    (void) XParseGeometry(geometry,&x,&y,&width,&height);
X  image->columns=width;
X  image->rows=height;
X  image->packets=image->columns*image->rows;
X  image->pixels=(RunlengthPacket *)
X    malloc((unsigned int) image->packets*sizeof(RunlengthPacket));
X  image->comments=(char *) malloc((strlen(image->filename)+2048)*sizeof(char));
X  if ((image->pixels == (RunlengthPacket *) NULL) ||
X      (image->comments == (char *) NULL))
X    {
X      Warning("unable to allocate image","memory allocation error");
X      DestroyImage(image);
X      return((Image *) NULL);
X    }
X  (void) sprintf(image->comments,"\n  Imported from constant file:  %s\n",
X    image->filename);
X  /*
X    Create colormap.
X  */
X  image->colors=1;
X  image->colormap=(ColorPacket *) malloc(image->colors*sizeof(ColorPacket));
X  if (image->colormap == (ColorPacket *) NULL)
X    {
X      Warning("unable to create image","memory allocation failed");
X      DestroyImage(image);
X      return((Image *) NULL);
X    }
X  image->colormap[0].red=pixel_info.background_color.red >> 8;
X  image->colormap[0].green=pixel_info.background_color.red >> 8;
X  image->colormap[0].blue=pixel_info.background_color.red >> 8;
X  p=image->pixels;
X  for (i=0; i < (image->columns*image->rows); i++)
X  {
X    p->red=image->colormap[0].red;
X    p->green=image->colormap[0].green;
X    p->blue=image->colormap[0].blue;
X    p->index=0;
X    p->length=0;
X    p++;
X  }
X  /*
X    Free resources.
X  */
X  XFree((void *) visual_info);
X  XCloseDisplay(display);
X  return(image);
}
X
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   X A n n o t a t e I m a g e                                               %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  Function XAnnotateImage annotates the image with text.
%
%  The format of the XAnnotateImage routine is:
%
%    status=XAnnotateImage(display,window,annotate_info,background,image)
%
%  A description of each parameter follows:
%
%    o status: Function XAnnotateImage returns True if the image is
%      successfully annotated with text.  False is returned is there is a
%      memory shortage.
%
%    o display: Specifies a connection to an X server;  returned from
%      XOpenDisplay.
%
%    o window: Specifies a pointer to a XWindowInfo structure.
%
%    o text: Specifies the text to annotate the image.
%
%    o annotate_info: Specifies a pointer to a XAnnotateInfo structure.
%
%    o background: Specifies whether the background color is included in
%      the annotation.  Must be either True or False;
%
%    o image: Specifies a pointer to a Image structure;  returned from
%      ReadImage.
%
%
*/
unsigned int XAnnotateImage(display,window,annotate_info,background,image)
Display
X  *display;
X
XXWindowInfo
X  *window;
X
XXAnnotateInfo
X  *annotate_info;
X
unsigned int
X  background;
X
Image
X  *image;
{
X  GC
X    graphic_context;
X
X  Image
X    *annotate_image;
X
X  int
X    x,
X    y;
X
X  Pixmap
X    annotate_pixmap;
X
X  register short int
X    pixel;
X
X  register RunlengthPacket
X    *p,
X    *q;
X
X  RunlengthPacket
X    background_color;
X
X  unsigned int
X    height,
X    width;
X
X  XGCValues
X    graphic_context_value;
X
X  XImage
X    *annotate_ximage;
X
X  XPixelInfo
X    *pixel_info;
X
X  /*
X    Initialize annotated image.
X  */
X  if (image->packets != (image->columns*image->rows))
X    if (!UncompressImage(image))
X      return(False);
X  /*
X    Initialize annotated pixmap.
X  */
X  annotate_pixmap=XCreatePixmap(display,window->id,annotate_info->width,
X    annotate_info->height,window->depth);
X  if (annotate_pixmap == (Pixmap) NULL)
X    return(False);
X  /*
X    Initialize graphics info.
X  */
X  graphic_context_value.background=0;
X  graphic_context_value.foreground=(~0);
X  graphic_context_value.font=annotate_info->font_info->fid;
X  graphic_context=XCreateGC(display,window->id,GCBackground | GCFont |
X    GCForeground,&graphic_context_value);
X  if (graphic_context == (GC) NULL)
X    return(False);
X  /*
X    Draw text to pixmap.
X  */
X  XDrawImageString(display,annotate_pixmap,graphic_context,0,
X    annotate_info->font_info->ascent,annotate_info->text,
X    strlen(annotate_info->text));
X  XFreeGC(display,graphic_context);
X  /*
X    Initialize annotated X image.
X  */
X  annotate_ximage=XGetImage(display,annotate_pixmap,0,0,annotate_info->width,
X    annotate_info->height,AllPlanes,ZPixmap);
X  if (annotate_ximage == (XImage *) NULL)
X    return(False);
X  XFreePixmap(display,annotate_pixmap);
X  /*
X    Initialize annotated image.
X  */
X  annotate_image=AllocateImage("MIFF");
X  if (annotate_image == (Image *) NULL)
X    return(False);
X  annotate_image->columns=annotate_info->width;
X  annotate_image->rows=annotate_info->height;
X  annotate_image->packets=annotate_image->columns*annotate_image->rows;
X  annotate_image->pixels=(RunlengthPacket *)
X    malloc((unsigned int) image->packets*sizeof(RunlengthPacket));
X  if (annotate_image->pixels == (RunlengthPacket *) NULL)
X    {
X      DestroyImage(annotate_image);
X      return(False);
X    }
X  /*
X    Transfer annotated X image to image.
X  */
X  pixel_info=window->pixel_info;
X  q=annotate_image->pixels;
X  for (y=0; y < annotate_image->rows; y++)
X    for (x=0; x < annotate_image->columns; x++)
X    {
X      pixel=(short int) XGetPixel(annotate_ximage,x,y);
X      if (pixel == 0)
X        {
X          /*
X            Set this pixel to the background color.
X          */
X          q->red=pixel_info->background_color.red >> 8;
X          q->green=pixel_info->background_color.green >> 8;
X          q->blue=pixel_info->background_color.blue >> 8;
X          q->index=pixel_info->background_index;
X        }
X      else
X        {
X          /*
X            Set this pixel to the pen color.
X          */
X          q->red=pixel_info->annotate_color.red >> 8;
X          q->green=pixel_info->annotate_color.green >> 8;
X          q->blue=pixel_info->annotate_color.blue >> 8;
X          q->index=pixel_info->annotate_index;
X        }
X      q->length=0;
X      q++;
X    }
X  XDestroyImage(annotate_ximage);
X  /*
X    Determine annotate geometry.
X  */
X  (void) XParseGeometry(annotate_info->geometry,&x,&y,&width,&height);
X  if ((width != annotate_image->columns) || (height != annotate_image->rows))
X    TransformImage(&annotate_image,(char *) NULL,
X      annotate_info->geometry,(char *) NULL);
X  if (annotate_info->degrees != 0.0)
X    {
X      Image
X        *rotated_image;
X
X      /*
X        Rotate image.
X      */
X      rotated_image=RotateImage(annotate_image,annotate_info->degrees,False);
X      if (rotated_image == (Image *) NULL)
X        return(False);
X      DestroyImage(annotate_image);
X      annotate_image=rotated_image;
X    }
X  /*
X    Paste annotated image to image.
X  */
X  background_color.red=pixel_info->background_color.red >> 8;
X  background_color.green=pixel_info->background_color.green >> 8;
X  background_color.blue=pixel_info->background_color.blue >> 8;
X  image->class=DirectClass;
X  p=annotate_image->pixels;
X  q=image->pixels+y*image->columns+x;
X  for (y=0; y < annotate_image->rows; y++)
X  {
X    for (x=0; x < annotate_image->columns; x++)
X    {
X      if ((p->red != background_color.red) ||
X          (p->green != background_color.green) ||
X          (p->blue != background_color.blue))
X        {
X          /*
X            Set this pixel to the pen color.
X          */
X          *q=(*p);
X          q->index=pixel_info->annotate_index;
X        }
X      else
X        if (background)
X          {
X            /*
X              Set this pixel to the background color.
X            */
X            *q=(*p);
X            q->index=pixel_info->background_index;
X          }
X      p++;
X      q++;
X    }
X    q+=image->columns-annotate_image->columns;
X  }
X  DestroyImage(annotate_image);
X  return(True);
}
X
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   X B e s t F o n t                                                         %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  Function XBestFont returns the "best" font.  "Best" is defined as a font
%  specified in the X resource database or a font such that the text width
%  displayed with the font does not exceed the specified maximum width.
%
%  The format of the XBestFont routine is:
%
%      font=XBestFont(display,resource_info,text,maximum_width)
%
%  A description of each parameter follows:
%
%    o font: XBestFont returns a pointer to a XFontStruct structure.
%
%    o display: Specifies a connection to an X server;  returned from
%      XOpenDisplay.
%
%    o resource_info: Specifies a pointer to a X11 XResourceInfo structure.
%
%    o text: Specifies the text whose width is compared to the maximum.
%
%    o maximum_width: Specifies the maximum width in pixels of the text.
%
%
*/
XXFontStruct *XBestFont(display,resource_info,text,maximum_width)
Display
X  *display;
X
XXResourceInfo
X  *resource_info;
X
char
X  *text;
X
unsigned int
X  maximum_width;
{
X  static char
X    *fonts[]=
X    {
X      "fixed",
X      "9x15",
X      "6x13",
X      "6x10",
X      (char *) NULL
X    };
X
X  char
X    *font_name,
X    **p;
X
X  unsigned int
X    width;
X
X  XFontStruct
X    *font_info;
X
X  font_info=(XFontStruct *) NULL;
X  font_name=resource_info->font;
X  if (font_name != (char *) NULL)
X    {
X      /*
X        Load preferred font specified in the X resource database.
X      */
X      font_info=XLoadQueryFont(display,font_name);
X      if (font_info == (XFontStruct *) NULL)
X        Warning("unable to load font",font_name);
X    }
X  else
X    if (text != (char *) NULL)
X      {
X        /*
X          Load a font that does not exceed the text width.
X        */
X        for (p=fonts; *p != (char *) NULL; p++)
X        {
X          if (font_info != (XFontStruct *) NULL)
X            {
X              width=XTextWidth(font_info,text,strlen(text))+
X                2*font_info->max_bounds.width+2*WindowBorderWidth;
X              if (width < maximum_width)
X                break;
X              font_name=(*p);
X              XFreeFont(display,font_info);
X            }
X          font_info=XLoadQueryFont(display,*p);
X        }
X      }
X  if (font_info == (XFontStruct *) NULL)
X    font_info=XLoadQueryFont(display,"fixed");  /* backup font */
X  if (font_info == (XFontStruct *) NULL)
X    font_info=XLoadQueryFont(display,"variable");  /* backup font */
X  return(font_info);
}
X
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   X B e s t I c o n S i z e                                                 %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  Function XBestIconSize returns the "best" icon size.  "Best" is defined as
%  an icon size that maintains the aspect ratio of the image.  If the window
%  manager has preferred icon sizes, one of the preferred sizes is used.
%
%  The format of the XBestIconSize routine is:
%
%      XBestIconSize(display,window,image)
%
%  A description of each parameter follows:
%
%    o display: Specifies a connection to an X server;  returned from
%      XOpenDisplay.
%
%    o image: Specifies a pointer to a Image structure;  returned from
%      ReadImage.
%
%
*/
void XBestIconSize(display,window,image)
Display
X  *display;
X
XXWindowInfo
X  *window;
X
Image
X  *image;
{
#define MaxIconSize  64
X
X  int
X    number_sizes;
X
X  unsigned int
X    icon_height,
X    icon_width;
X
X  unsigned long int
X    scale_factor;
X
X  Window
X    root_window;
X
X  XIconSize
X    *icon_size,
X    *size_list;
X
X  /*
X    Determine if the window manager has specified preferred icon sizes.
X  */
X  window->width=MaxIconSize;
X  window->height=MaxIconSize;
X  icon_size=(XIconSize *) NULL;
X  number_sizes=0;
X  root_window=XRootWindow(display,window->screen);
X  if (XGetIconSizes(display,root_window,&size_list,&number_sizes) != 0)
X    if ((number_sizes > 0) && (size_list != (XIconSize *) NULL))
X      icon_size=size_list;
X  if (icon_size == (XIconSize *) NULL)
X    {
X      /*
X        Window manager does not restrict icon size.
X      */
X      icon_size=XAllocIconSize();
X      if (icon_size == (XIconSize *) NULL)
X        {
X          Warning("unable to choose best icon size","memory allocation failed");
X          return;
X        }
X      icon_size->min_width=1;
X      icon_size->max_width=MaxIconSize;
X      icon_size->min_height=1;
X      icon_size->max_height=MaxIconSize;
X      icon_size->width_inc=1;
X      icon_size->height_inc=1;
X    }
X  /*
X    Look for an icon size that maintains the aspect ratio of image.
X  */
X  scale_factor=UpShift(icon_size->max_width)/image->columns;
X  if (scale_factor > (UpShift(icon_size->max_height)/image->rows))
X    scale_factor=UpShift(icon_size->max_height)/image->rows;
X  icon_width=icon_size->min_width;
X  while (icon_width < icon_size->max_width)
X  {
X    if (icon_width >= (DownShift(image->columns*scale_factor)))
X      break;
X    icon_width+=icon_size->width_inc;
X  }
X  icon_height=icon_size->min_height;
X  while (icon_height < icon_size->max_height)
X  {
X    if (icon_height >= (DownShift(image->rows*scale_factor)))
X      break;
X    icon_height+=icon_size->height_inc;
X  }
X  XFree((void *) icon_size);
X  window->width=icon_width;
X  window->height=icon_height;
}
X
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   X B e s t P i x e l                                                       %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  Function XBestPixel returns a pixel from an array of pixels that is closest
%  to the requested color.
%
%  The format of the XBestPixel routine is:
%
%      pixel=XBestPixel(colors,number_colors,color)
%
%  A description of each parameter follows:
%
%    o pixel: XBestPixel returns the pixel value closest to the requested
%      color.
%
%    o colors: Specifies an array of XColor structures.
%
%    o number_colors: Specifies the number of XColor structures in the
%      color definition array.
%
%    o color: Specifies the desired RGB value to find in the colors array.
%
%
*/
static void XBestPixel(colors,number_colors,color)
XXColor
X  *colors;
X
unsigned int
X  number_colors;
X
XXColor
X  *color;
{
X  register int
X    blue_distance,
X    green_distance,
X    i,
X    red_distance;
X
X  register unsigned long
X    distance,
X    min_distance;
X
X  /*
X    Find closest representation for the requested RGB color.
X  */
X  color->pixel=0;
X  min_distance=(~0);
X  for (i=0; i < number_colors; i++)
X  {
X    red_distance=(colors[i].red >> 8)-(color->red >> 8);
X    green_distance=(colors[i].green >> 8)-(color->green >> 8);
X    blue_distance=(colors[i].blue >> 8)-(color->blue >> 8);
X    distance=red_distance*red_distance+green_distance*green_distance+
X      blue_distance*blue_distance;
X    if (distance < min_distance)
X      {
X        min_distance=distance;
X        color->pixel=colors[i].pixel;
X      }
X  }
X  return;
}
X
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   X B e s t V i s u a l I n f o                                             %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  Function XBestVisualInfo returns visual information for a visual that is
%  the "best" the server supports.  "Best" is defined as:
%
%    1. Restrict the visual list to those supported by the default screen.
%
%    2. If a visual type is specified, restrict the visual list to those of
%       that type.
%
%    3. If a map type is specified, choose the visual that matches the id
%       specified by the Standard Colormap.
%
%    4  From the list of visuals, choose one that can display the most
%       simultaneous colors.  If more than one visual can display the same
%       number of simultaneous colors, one is choosen based on a rank.
%
%  The format of the XBestVisualInfo routine is:
%
%      visual_info=XBestVisualInfo(display,visual_type,map_type,map_info)
%
%  A description of each parameter follows:
%
%    o visual_info: XBestVisualInfo returns a pointer to a X11 XVisualInfo
%      structure.
%
%    o display: Specifies a connection to an X server;  returned from
%      XOpenDisplay.
%
%    o visual_type: Specifies the desired visual type.
%
%    o map_type: Specifies the desired Standard Colormap type.
%
%    o map_info: If map_type is specified, this structure is initialized
%      with info from the Standard Colormap.
%
%
*/
XXVisualInfo *XBestVisualInfo(display,visual_type,map_type,map_info)
Display
X  *display;
X
char
X  *visual_type,
X  *map_type;
X
XXStandardColormap
X  *map_info;
{
#define XVisualColormapSize(visual_info) \
X  ((visual_info->class == TrueColor) || (visual_info->class == DirectColor) ? \
X    visual_info->red_mask | visual_info->green_mask | visual_info->blue_mask : \
X    visual_info->colormap_size)
X
X  int
X    number_visuals;
X
X  register int
X    i;
X
X  unsigned int
X    visual_mask;
X
X  XVisualInfo
X    *visual_info,
X    *visual_list,
X    visual_template;
X
X  /*
X    Restrict visual search by screen number.
X  */
X  visual_mask=VisualScreenMask;
X  visual_template.screen=XDefaultScreen(display);
X  if (visual_type != (char *) NULL)
X    {
X      /*
X        Restrict visual search by class or visual id.
X      */
X      if (Latin1Compare("staticgray",visual_type) == 0)
X        {
X          visual_mask|=VisualClassMask;
X          visual_template.class=StaticGray;
X        }
X      else
X        if (Latin1Compare("grayscale",visual_type) == 0)
X          {
X            visual_mask|=VisualClassMask;
X            visual_template.class=GrayScale;
X          }
X        else
X          if (Latin1Compare("staticcolor",visual_type) == 0)
X            {
X              visual_mask|=VisualClassMask;
X              visual_template.class=StaticColor;
X            }
X          else
X            if (Latin1Compare("pseudocolor",visual_type) == 0)
X              {
X                visual_mask|=VisualClassMask;
X                visual_template.class=PseudoColor;
X              }
X            else
X              if (Latin1Compare("truecolor",visual_type) == 0)
X                {
X                  visual_mask|=VisualClassMask;
X                  visual_template.class=TrueColor;
X                }
X              else
X                if (Latin1Compare("directcolor",visual_type) == 0)
X                  {
X                    visual_mask|=VisualClassMask;
X                    visual_template.class=DirectColor;
X                  }
X                else
X                  if (Latin1Compare("default",visual_type) == 0)
X                    {
X                      visual_mask|=VisualIDMask;
X                      visual_template.visualid=XVisualIDFromVisual(
X                        XDefaultVisual(display,XDefaultScreen(display)));
X                    }
X                  else
X                    if (isdigit(*visual_type))
X                      {
X                        visual_mask|=VisualIDMask;
X                        visual_template.visualid=
X                          strtol(visual_type,(char **) NULL,0);
X                      }
X                    else
X                      Warning("invalid visual specifier",visual_type);
X    }
X  /*
X    Get all visuals that meet our criteria so far.
X  */
X  number_visuals=0;
X  visual_list=XGetVisualInfo(display,visual_mask,&visual_template,
X    &number_visuals);
X  visual_mask=VisualScreenMask | VisualIDMask;
X  if ((number_visuals == 0) || (visual_list == (XVisualInfo *) NULL))
X    {
X      /*
X        Failed to get visual;  try using the default visual.
X      */
X      Warning("unable to get visual",visual_type);
X      visual_template.visualid=
X        XVisualIDFromVisual(XDefaultVisual(display,XDefaultScreen(display)));
X      visual_list=XGetVisualInfo(display,visual_mask,&visual_template,
X        &number_visuals);
X      if ((number_visuals == 0) || (visual_list == (XVisualInfo *) NULL))
X        return((XVisualInfo *) NULL);
X      Warning("using default visual",XVisualClassName(visual_list));
X    }
X  if (map_type != (char *) NULL)
X    {
X      Atom
X        map_property;
X
X      char
X        map_name[2048];
X
X      int
X        j,
X        number_maps,
X        status;
X
X      Window
X        root_window;
X
X      XStandardColormap
X        *map_list;
X
X      /*
X        Restrict visual search by Standard Colormap visual id.
X      */
X      (void) sprintf((char *) map_name,"RGB_%s_MAP",map_type);
X      Latin1Upper(map_name);
X      map_property=XInternAtom(display,(char *) map_name,True);
X      if (map_property == (Atom) NULL)
X        Error("unable to get Standard Colormap",map_type);
X      root_window=XRootWindow(display,XDefaultScreen(display));
X      status=XGetRGBColormaps(display,root_window,&map_list,&number_maps,
X        map_property);
X      if (status == 0)
X        Error("unable to get Standard Colormap",map_type);
X      /*
X        Search all Standard Colormaps and visuals for ids that match.
X      */
X      *map_info=map_list[0];
#ifndef PRE_R4_ICCCM
X      visual_template.visualid=XVisualIDFromVisual(visual_list[0].visual);
X      for (i=0; i < number_maps; i++)
X        for (j=0; j < number_visuals; j++)
X          if (map_list[i].visualid ==
X              XVisualIDFromVisual(visual_list[j].visual))
X            {
X              *map_info=map_list[i];
X              visual_template.visualid=
X                XVisualIDFromVisual(visual_list[j].visual);
X              break;
X            }
X      if (map_info->visualid != visual_template.visualid)
X        Error("unable to match visual to Standard Colormap",map_type);
#endif
X      if (map_info->colormap == (Colormap) NULL)
X        Error("Standard Colormap is not initialized",map_type);
X      XFree((void *) map_list);
X    }
X  else
X    {
X      static unsigned int
X        rank[]=
X          {
X            StaticGray,
X            GrayScale,
X            StaticColor,
X            DirectColor,
X            TrueColor,
X            PseudoColor
X          };
X
X      XVisualInfo
X        *p;
X
X      /*
X        Pick one visual that displays the most simultaneous colors.
X      */
X      visual_info=visual_list;
X      p=visual_list;
X      for (i=1; i < number_visuals; i++)
X      {
X        p++;
X        if (XVisualColormapSize(p) > XVisualColormapSize(visual_info))
X          visual_info=p;
X        else
X          if (XVisualColormapSize(p) == XVisualColormapSize(visual_info))
X            if (rank[p->class] > rank[visual_info->class])
X              visual_info=p;
X      }
X      visual_template.visualid=XVisualIDFromVisual(visual_info->visual);
X    }
X  XFree((void *) visual_list);
X  /*
X    Retrieve only one visual by its screen & id number.
X  */
X  visual_info=XGetVisualInfo(display,visual_mask,&visual_template,
X    &number_visuals);
X  if ((number_visuals == 0) || (visual_info == (XVisualInfo *) NULL))
X    return((XVisualInfo *) NULL);
X  return(visual_info);
}
X
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   X C l i e n t W i n d o w                                                 %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  Function XClientWindow finds a window, at or below the specified window,
%  which has a WM_STATE property.  If such a window is found, it is returned,
%  otherwise the argument window is returned.
%
%  The format of the XClientWindow function is:
%
%      client_window=XClientWindow(display,target_window)
%
%  A description of each parameter follows:
%
%    o client_window: XClientWindow returns a window, at or below the specified
%      window, which has a WM_STATE property otherwise the argument
%      target_window is returned.
%
%    o display: Specifies a pointer to the Display structure;  returned from
%      XOpenDisplay.
%
%    o target_window: Specifies the window to find a WM_STATE property.
%
%
*/
Window XClientWindow(display,target_window)
Display
X  *display;
X
Window
X  target_window;
{
X  Atom
X    state,
X    type;
X
X  int
X    format,
X    status;
X
X  unsigned char
X    *data;
X
X  unsigned long
X    after,
X    number_items;
X
X  Window
X    client_window;
X
X  state=XInternAtom(display,"WM_STATE",True);
X  if (state == (Atom) NULL)
X    return(target_window);
X  type=(Atom) NULL;
X  status=XGetWindowProperty(display,target_window,state,0L,0L,False,
X    (Atom) AnyPropertyType,&type,&format,&number_items,&after,&data);
X  if ((status == Success) && (type != (Atom) NULL))
X    return(target_window);
X  client_window=XWindowByProperty(display,target_window,state);
X  if (client_window == (Window) NULL)
X    return(target_window);
X  return(client_window);
}
X
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   X E r r o r                                                               %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  Function XError ignores BadWindow errors for XQueryTree and
%  XGetWindowAttributes, and ignores BadDrawable errors for XGetGeometry, and
%  ignores BadValue errors for XQueryColor.  It returns False in those cases.
%  Otherwise it returns True.
%
%  The format of the XError function is:
%
%      XError(display,error)
%
%  A description of each parameter follows:
%
%    o display: Specifies a pointer to the Display structure;  returned from
%      XOpenDisplay.
%
%    o error: Specifies the error event.
%
%
*/
int XError(display,error)
Display
X  *display;
X
XXErrorEvent
X  *error;
{
X  switch (error->request_code)
X  {
X    case X_GetGeometry:
X    {
X      if (error->error_code == BadDrawable)
X        return(False);
X      break;
X    }
X    case X_GetWindowAttributes:
X    case X_QueryTree:
X    {
X      if (error->error_code == BadWindow)
X        return(False);
X      break;
X    }
X    case X_QueryColors:
X    {
X      if (error->error_code == BadValue)
X        return(False);
X      break;
X    }
X  }
X  return(True);
}
X
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   X F r e e S t a n d a r d C o l o r m a p                                 %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  Function XFreeStandardColormap frees an X11 colormap.
%
%  The format of the XFreeStandardColormap routine is:
%
%      XFreeStandardColormap(display,visual_info,pixel_info,map_info)
%
%  A description of each parameter follows:
%
%    o display: Specifies a connection to an X server; returned from
%      XOpenDisplay.
%
%    o visual_info: Specifies a pointer to a X11 XVisualInfo structure;
%      returned from XGetVisualInfo.
%
%    o pixel_info: Specifies a pointer to a XPixelInfo structure.
%
%    o map_info: If map_type is specified, this structure is initialized
%      with info from the Standard Colormap.
%
%
*/
void XFreeStandardColormap(display,visual_info,pixel_info,map_info)
Display
X  *display;
X
XXVisualInfo
X  *visual_info;
X
XXPixelInfo
X  *pixel_info;
X
XXStandardColormap
X  *map_info;
{
X  /*
X    Free colormap.
X  */
X  XFlush(display);
X  if (map_info->colormap != (Colormap) NULL)
X    if (map_info->colormap != XDefaultColormap(display,visual_info->screen))
X      XFreeColormap(display,map_info->colormap);
X    else
X      if ((visual_info->class != TrueColor) &&
X          (visual_info->class != DirectColor))
X        XFreeColors(display,map_info->colormap,pixel_info->pixels,
X          (int) pixel_info->colors,0);
X  map_info->colormap=(Colormap) NULL;
X  if (pixel_info->pixels != (unsigned long *) NULL)
X    (void) free((char *) pixel_info->pixels);
X  pixel_info->pixels=(unsigned long *) NULL;
}
X
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   X G e t A n n o t a t e I n f o                                           %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  Function XGetAnnotateInfo initializes the AnnotateInfo structure.
%
%  The format of the GetAnnotateInfo routine is:
%
%      XGetAnnotateInfo(alien_info)
%
%  A description of each parameter follows:
%
%    o annotate_info: Specifies a pointer to a XAnnotateInfo structure.
%
%
*/
void XGetAnnotateInfo(annotate_info)
XXAnnotateInfo
X  *annotate_info;
{
X  /*
X    Initialize annotate structure.
X  */
X  annotate_info->x=0;
X  annotate_info->y=0;
X  annotate_info->width=0;
X  annotate_info->height=0;
X  annotate_info->degrees=0.0;
X  annotate_info->font_info=(XFontStruct *) NULL;
X  annotate_info->text=(char *) NULL;
X  *annotate_info->geometry=(char) NULL;
X  annotate_info->previous=(XAnnotateInfo *) NULL;
X  annotate_info->next=(XAnnotateInfo *) NULL;
}
X
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   X G e t P i x e l I n f o                                                 %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  Function XGetPixelInfo initializes the PixelInfo structure.
%
%  The format of the XGetPixelInfo routine is:
%
%      XGetPixelInfo(display,visual_info,map_info,resource_info,image,
%        pixel_info)
%
%  A description of each parameter follows:
%
%    o display: Specifies a connection to an X server; returned from
%      XOpenDisplay.
%
%    o visual_info: Specifies a pointer to a X11 XVisualInfo structure;
%      returned from XGetVisualInfo.
%
%    o map_info: If map_type is specified, this structure is initialized
%      with info from the Standard Colormap.
%
%    o resource_info: Specifies a pointer to a X11 XResourceInfo structure.
%
%    o image: Specifies a pointer to a Image structure;  returned from
%      ReadImage.
%
%    o pixel_info: Specifies a pointer to a XPixelInfo structure.
%
%
*/
void XGetPixelInfo(display,visual_info,map_info,resource_info,image,pixel_info)
Display
X  *display;
X
XXVisualInfo
X  *visual_info;
X
XXStandardColormap
X  *map_info;
X
XXResourceInfo
X  *resource_info;
X
Image
X  *image;
X
XXPixelInfo
X  *pixel_info;
{
X  register int
X    i;
X
X  int
X    status;
X
X  unsigned int
X    packets;
X
X  pixel_info->colors=0;
X  if (image != (Image *) NULL)
X    if (image->class == PseudoClass)
X      pixel_info->colors=image->colors;
X  packets=Max(pixel_info->colors,visual_info->colormap_size)+MaxNumberPens;
X  pixel_info->pixels=(unsigned long *) malloc(packets*sizeof(unsigned long));
X  if (pixel_info->pixels == (unsigned long *) NULL)
X    Error("unable to get pixel info","memory allocation failed");
X  status=XParseColor(display,map_info->colormap,resource_info->background_color,
X    &pixel_info->background_color);
X  if (status == 0)
X    Warning("color is not known to X server",resource_info->background_color);
X  pixel_info->background_color.pixel=
X    XStandardPixel(map_info,pixel_info->background_color,16);
X  pixel_info->background_color.flags=DoRed | DoGreen | DoBlue;
X  status=XParseColor(display,map_info->colormap,resource_info->border_color,
X    &pixel_info->border_color);
X  if (status == 0)
X    Warning("color is not known to X server",resource_info->border_color);
X  pixel_info->border_color.pixel=
X    XStandardPixel(map_info,pixel_info->border_color,16);
X  pixel_info->border_color.flags=DoRed | DoGreen | DoBlue;
X  status=XParseColor(display,map_info->colormap,resource_info->foreground_color,
X    &pixel_info->foreground_color);
X  if (status == 0)
X    Warning("color is not known to X server",resource_info->foreground_color);
X  pixel_info->foreground_color.pixel=
X    XStandardPixel(map_info,pixel_info->foreground_color,16);
X  pixel_info->foreground_color.flags=DoRed | DoGreen | DoBlue;
X  for (i=0; i < MaxNumberPens; i++)
X  {
X    status=XParseColor(display,map_info->colormap,resource_info->pen_color[i],
X      &pixel_info->pen_color[i]);
X    if (status == 0)
X      Warning("color is not known to X server",resource_info->pen_color[i]);
X    pixel_info->pen_color[i].pixel=
X      XStandardPixel(map_info,pixel_info->pen_color[i],16);
X    pixel_info->pen_color[i].flags=DoRed | DoGreen | DoBlue;
SHAR_EOF
true || echo 'restore of ImageMagick/X.c failed'
fi
echo 'End of  part 15'
echo 'File ImageMagick/X.c is continued in part 16'
echo 16 > _shar_seq_.tmp
exit 0
exit 0 # Just in case...