cups/page.c

   1 /*
   2  * "$Id: page.c 4494 2005-02-18 02:18:11Z mike $"
   3  *
   4  *   Page size functions for the Common UNIX Printing System (CUPS).
   5  *
   6  *   Copyright 1997-2005 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 USA
  19  *
  20  *       Voice: (301) 373-9600
  21  *       EMail: cups-info@cups.org
  22  *         WWW: http://www.cups.org
  23  *
  24  *   PostScript is a trademark of Adobe Systems, Inc.
  25  *
  26  *   This file is subject to the Apple OS-Developed Software exception.
  27  *
  28  * Contents:
  29  *
  30  *   ppdPageSize()   - Get the page size record for the given size.
  31  *   ppdPageWidth()  - Get the page width for the given size.
  32  *   ppdPageLength() - Get the page length for the given size.
  33  */
  34
  35 /*
  36  * Include necessary headers...
  37  */
  38
  39 #include "ppd.h"
  40 #include "string.h"
  41 #include <ctype.h>
  42
  43
  44 /*
  45  * 'ppdPageSize()' - Get the page size record for the given size.
  46  */
  47
  48 ppd_size_t *                    /* O - Size record for page or NULL */
  49 ppdPageSize(ppd_file_t *ppd,    /* I - PPD file record */
  50             const char *name)   /* I - Size name */
  51 {
  52   int   i;                      /* Looping var */
  53   float w, l;                   /* Width and length of page */
  54   char  units[255];             /* Page size units... */
  55
  56
  57   if (ppd == NULL)
  58     return (NULL);
  59
  60   if (name != NULL)
  61   {
  62     if (strncmp(name, "Custom.", 7) == 0 && ppd->variable_sizes)
  63     {
  64      /*
  65       * Find the custom page size...
  66       */
  67
  68       for (i = 0; i < ppd->num_sizes; i ++)
  69         if (strcmp("Custom", ppd->sizes[i].name) == 0)
  70           break;
  71
  72       if (i == ppd->num_sizes)
  73         return (NULL);
  74
  75      /*
  76       * Variable size; size name can be one of the following:
  77       *
  78       *    Custom.WIDTHxLENGTHin    - Size in inches
  79       *    Custom.WIDTHxLENGTHcm    - Size in centimeters
  80       *    Custom.WIDTHxLENGTHmm    - Size in millimeters
  81       *    Custom.WIDTHxLENGTH[pt]  - Size in points
  82       */
  83
  84       units[0] = '\0';
  85       if (sscanf(name + 7, "%fx%f%254s", &w, &l, units) < 2)
  86         return (NULL);
  87
  88       if (strcasecmp(units, "in") == 0)
  89       {
  90         ppd->sizes[i].width  = w * 72.0f;
  91         ppd->sizes[i].length = l * 72.0f;
  92         ppd->sizes[i].left   = ppd->custom_margins[0];
  93         ppd->sizes[i].bottom = ppd->custom_margins[1];
  94         ppd->sizes[i].right  = w * 72.0f - ppd->custom_margins[2];
  95         ppd->sizes[i].top    = l * 72.0f - ppd->custom_margins[3];
  96       }
  97       else if (strcasecmp(units, "cm") == 0)
  98       {
  99         ppd->sizes[i].width  = w / 2.54f * 72.0f;
 100         ppd->sizes[i].length = l / 2.54f * 72.0f;
 101         ppd->sizes[i].left   = ppd->custom_margins[0];
 102         ppd->sizes[i].bottom = ppd->custom_margins[1];
 103         ppd->sizes[i].right  = w / 2.54f * 72.0f - ppd->custom_margins[2];
 104         ppd->sizes[i].top    = l / 2.54f * 72.0f - ppd->custom_margins[3];
 105       }
 106       else if (strcasecmp(units, "mm") == 0)
 107       {
 108         ppd->sizes[i].width  = w / 25.4f * 72.0f;
 109         ppd->sizes[i].length = l / 25.4f * 72.0f;
 110         ppd->sizes[i].left   = ppd->custom_margins[0];
 111         ppd->sizes[i].bottom = ppd->custom_margins[1];
 112         ppd->sizes[i].right  = w / 25.4f * 72.0f - ppd->custom_margins[2];
 113         ppd->sizes[i].top    = l / 25.4f * 72.0f - ppd->custom_margins[3];
 114       }
 115       else
 116       {
 117         ppd->sizes[i].width  = w;
 118         ppd->sizes[i].length = l;
 119         ppd->sizes[i].left   = ppd->custom_margins[0];
 120         ppd->sizes[i].bottom = ppd->custom_margins[1];
 121         ppd->sizes[i].right  = w - ppd->custom_margins[2];
 122         ppd->sizes[i].top    = l - ppd->custom_margins[3];
 123       }
 124
 125       return (ppd->sizes + i);
 126     }
 127     else
 128     {
 129      /*
 130       * Lookup by name...
 131       */
 132
 133       for (i = 0; i < ppd->num_sizes; i ++)
 134         if (strcmp(name, ppd->sizes[i].name) == 0)
 135           return (ppd->sizes + i);
 136     }
 137   }
 138   else
 139   {
 140    /*
 141     * Find default...
 142     */
 143
 144     for (i = 0; i < ppd->num_sizes; i ++)
 145       if (ppd->sizes[i].marked)
 146         return (ppd->sizes + i);
 147   }
 148
 149   return (NULL);
 150 }
 151
 152
 153 /*
 154  * 'ppdPageWidth()' - Get the page width for the given size.
 155  */
 156
 157 float                           /* O - Width of page in points or 0.0 */
 158 ppdPageWidth(ppd_file_t *ppd,   /* I - PPD file record */
 159              const char *name)  /* I - Size name */
 160 {
 161   ppd_size_t    *size;          /* Page size */
 162
 163
 164   if ((size = ppdPageSize(ppd, name)) == NULL)
 165     return (0.0);
 166   else
 167     return (size->width);
 168 }
 169
 170
 171 /*
 172  * 'ppdPageLength()' - Get the page length for the given size.
 173  */
 174
 175 float                           /* O - Length of page in points or 0.0 */
 176 ppdPageLength(ppd_file_t *ppd,  /* I - PPD file */
 177               const char *name) /* I - Size name */
 178 {
 179   ppd_size_t    *size;          /* Page size */
 180
 181
 182   if ((size = ppdPageSize(ppd, name)) == NULL)
 183     return (0.0);
 184   else
 185     return (size->length);
 186 }
 187
 188
 189 /*
 190  * End of "$Id: page.c 4494 2005-02-18 02:18:11Z mike $".
 191  */