cups/page.c

   1 /*
   2  * "$Id: page.c,v 1.11 2000/01/04 13:45:36 mike Exp $"
   3  *
   4  *   Page size functions for the Common UNIX Printing System (CUPS).
   5  *
   6  *   Copyright 1997-2000 by Easy Software Products, all rights reserved.
   7  *
   8  *   These coded instructions, statements, and computer programs are the
   9  *   property of Easy Software Products and are protected by Federal
  10  *   copyright law.  Distribution and use rights are outlined in the file
  11  *   "LICENSE.txt" which should have been included with this file.  If this
  12  *   file is missing or damaged please contact Easy Software Products
  13  *   at:
  14  *
  15  *       Attn: CUPS Licensing Information
  16  *       Easy Software Products
  17  *       44141 Airport View Drive, Suite 204
  18  *       Hollywood, Maryland 20636-3111 USA
  19  *
  20  *       Voice: (301) 373-9603
  21  *       EMail: cups-info@cups.org
  22  *         WWW: http://www.cups.org
  23  *
  24  *   PostScript is a trademark of Adobe Systems, Inc.
  25  *
  26  * Contents:
  27  *
  28  *   ppdPageSize()   - Get the page size record for the given size.
  29  *   ppdPageWidth()  - Get the page width for the given size.
  30  *   ppdPageLength() - Get the page length for the given size.
  31  */
  32
  33 /*
  34  * Include necessary headers...
  35  */
  36
  37 #include "ppd.h"
  38 #include "string.h"
  39 #include <ctype.h>
  40
  41
  42 /*
  43  * 'ppdPageSize()' - Get the page size record for the given size.
  44  */
  45
  46 ppd_size_t *                    /* O - Size record for page or NULL */
  47 ppdPageSize(ppd_file_t *ppd,    /* I - PPD file record */
  48             const char *name)   /* I - Size name */
  49 {
  50   int   i;                      /* Looping var */
  51   float w, l;                   /* Width and length of page */
  52   char  units[255];             /* Page size units... */
  53
  54
  55   if (ppd == NULL)
  56     return (NULL);
  57
  58   if (name != NULL)
  59   {
  60     if (strncmp(name, "Custom.", 7) == 0 && ppd->variable_sizes)
  61     {
  62      /*
  63       * Find the custom page size...
  64       */
  65
  66       for (i = 0; i < ppd->num_sizes; i ++)
  67         if (strcmp("Custom", ppd->sizes[i].name) == 0)
  68           break;
  69
  70       if (i == ppd->num_sizes)
  71         return (NULL);
  72
  73      /*
  74       * Variable size; size name can be one of the following:
  75       *
  76       *    Custom.WIDTHxLENGTHin    - Size in inches
  77       *    Custom.WIDTHxLENGTHcm    - Size in centimeters
  78       *    Custom.WIDTHxLENGTHmm    - Size in millimeters
  79       *    Custom.WIDTHxLENGTH[pt]  - Size in points
  80       */
  81
  82       units[0] = '\0';
  83       if (sscanf(name + 7, "%fx%f%254s", &w, &l, units) < 2)
  84         return (NULL);
  85
  86       if (strcasecmp(units, "in") == 0)
  87       {
  88         ppd->sizes[i].width  = w * 72.0f;
  89         ppd->sizes[i].length = l * 72.0f;
  90         ppd->sizes[i].left   = ppd->custom_margins[0];
  91         ppd->sizes[i].bottom = ppd->custom_margins[1];
  92         ppd->sizes[i].right  = w * 72.0f - ppd->custom_margins[2];
  93         ppd->sizes[i].top    = l * 72.0f - ppd->custom_margins[3];
  94       }
  95       else if (strcasecmp(units, "cm") == 0)
  96       {
  97         ppd->sizes[i].width  = w / 2.54f * 72.0f;
  98         ppd->sizes[i].length = l / 2.54f * 72.0f;
  99         ppd->sizes[i].left   = ppd->custom_margins[0];
 100         ppd->sizes[i].bottom = ppd->custom_margins[1];
 101         ppd->sizes[i].right  = w / 2.54f * 72.0f - ppd->custom_margins[2];
 102         ppd->sizes[i].top    = l / 2.54f * 72.0f - ppd->custom_margins[3];
 103       }
 104       else if (strcasecmp(units, "mm") == 0)
 105       {
 106         ppd->sizes[i].width  = w / 25.4f * 72.0f;
 107         ppd->sizes[i].length = l / 25.4f * 72.0f;
 108         ppd->sizes[i].left   = ppd->custom_margins[0];
 109         ppd->sizes[i].bottom = ppd->custom_margins[1];
 110         ppd->sizes[i].right  = w / 25.4f * 72.0f - ppd->custom_margins[2];
 111         ppd->sizes[i].top    = l / 25.4f * 72.0f - ppd->custom_margins[3];
 112       }
 113       else
 114       {
 115         ppd->sizes[i].width  = w;
 116         ppd->sizes[i].length = l;
 117         ppd->sizes[i].left   = ppd->custom_margins[0];
 118         ppd->sizes[i].bottom = ppd->custom_margins[1];
 119         ppd->sizes[i].right  = w - ppd->custom_margins[2];
 120         ppd->sizes[i].top    = l - ppd->custom_margins[3];
 121       }
 122
 123       return (ppd->sizes + i);
 124     }
 125     else
 126     {
 127      /*
 128       * Lookup by name...
 129       */
 130
 131       for (i = 0; i < ppd->num_sizes; i ++)
 132         if (strcmp(name, ppd->sizes[i].name) == 0)
 133           return (ppd->sizes + i);
 134     }
 135   }
 136   else
 137   {
 138    /*
 139     * Find default...
 140     */
 141
 142     for (i = 0; i < ppd->num_sizes; i ++)
 143       if (ppd->sizes[i].marked)
 144         return (ppd->sizes + i);
 145   }
 146
 147   return (NULL);
 148 }
 149
 150
 151 /*
 152  * 'ppdPageWidth()' - Get the page width for the given size.
 153  */
 154
 155 float                           /* O - Width of page in points or 0.0 */
 156 ppdPageWidth(ppd_file_t *ppd,   /* I - PPD file record */
 157              const char *name)  /* I - Size name */
 158 {
 159   ppd_size_t    *size;          /* Page size */
 160
 161
 162   if ((size = ppdPageSize(ppd, name)) == NULL)
 163     return (0.0);
 164   else
 165     return (size->width);
 166 }
 167
 168
 169 /*
 170  * 'ppdPageLength()' - Get the page length for the given size.
 171  */
 172
 173 float                           /* O - Length of page in points or 0.0 */
 174 ppdPageLength(ppd_file_t *ppd,  /* I - PPD file */
 175               const char *name) /* I - Size name */
 176 {
 177   ppd_size_t    *size;          /* Page size */
 178
 179
 180   if ((size = ppdPageSize(ppd, name)) == NULL)
 181     return (0.0);
 182   else
 183     return (size->length);
 184 }
 185
 186
 187 /*
 188  * End of "$Id: page.c,v 1.11 2000/01/04 13:45:36 mike Exp $".
 189  */