LibTiff Mailing List
TIFF and LibTiff Mailing List Archive
January 1997
Previous Thread
Next Thread
Previous by Thread
Next by Thread
Previous by Date
Next by Date
Contact
The TIFF Mailing List Homepage
This list is run by Frank Warmerdam
Archive maintained by AWare Systems
1997.01.20 23:58 "Tiff Version 3.4 Beta 035 Patch to add tiff2ps enhancments", by John Wehle
Changes:
1) When printing tiff files it is frequently nice to print an each entire
image on single page regardless of the image size. The problem is
currently tiff2ps allows the printer to truncate the page unless the
-w and -h options are used in which case tiff2ps causes the printer
to scale the image to eactly that size (even if the original image
is smaller than that size or if this causes the image to be distorted).
This patch adds a -m option which ensures that the aspect ratio is
maintained and only scales the image if it doesn't fit within the
-w and -h specifications.
2) Many printers have a deadzone around the edge of the paper.
This patch adds a -z option to avoid the deadzone when printing. This
is especially useful when printing faxes as the deadzone often times
gobbles up the sender's fax id. Note: this option currently requires
that the printer support PostScript Level 2.
3) There appears to be a minor code bug in Ascii85Put which causes p
to be incremented by four twice.
This patch fixes that.
Enjoy,
John Wehle
john@feith.com
PS: I'm not on the tiff mailing list so please copy any reponses to me
via my email address. Thanks.
--------------8<------------------8<-------------------8<--------------------
*** tools/tiff2ps.c.ORIGINAL Mon Jun 10 18:25:28 1996
--- tools/tiff2ps.c Thu Jan 16 19:55:16 1997
***************
*** 42,51 ****
--- 42,53 ----
int ascii85 = FALSE; /* use ASCII85 encoding */
int interpolate = TRUE; /* interpolate level2 image */
int level2 = FALSE; /* generate PostScript level 2 */
+ int maintainAspect = FALSE; /* maintain aspect ratio and size */
int printAll = FALSE; /* print all images in file */
int generateEPSF = TRUE; /* generate Encapsulated PostScript */
int PSduplex = FALSE; /* enable duplex printing */
int PStumble = FALSE; /* enable top edge binding */
+ int PSavoiddeadzone = FALSE; /* enable avoiding printer deadzone */
char *filename; /* input filename */
/*
***************
*** 83,89 ****
extern int optind;
FILE* output = stdout;
! while ((c = getopt(argc, argv, "h:w:d:o:O:aeps128DT")) != -1)
switch (c) {
case 'd':
dirnum = atoi(optarg);
--- 85,91 ----
extern int optind;
FILE* output = stdout;
! while ((c = getopt(argc, argv, "h:w:d:o:O:aemzps128DT")) != -1)
switch (c) {
case 'd':
dirnum = atoi(optarg);
***************
*** 124,132 ****
--- 126,141 ----
case 'w':
pageWidth = atof(optarg);
break;
+ case 'm':
+ maintainAspect = TRUE;
+ break;
+ case 'z':
+ PSavoiddeadzone = TRUE;
+ break;
case '1':
level2 = FALSE;
ascii85 = FALSE;
+ PSavoiddeadzone = FALSE;
break;
case '2':
level2 = TRUE;
***************
*** 314,319 ****
--- 323,329 ----
{
uint32 w, h;
float ox, oy, prw, prh;
+ float scale;
uint32 subfiletype;
uint16* sampleinfo;
static int npages = 0;
***************
*** 362,369 ****
fprintf(fd, "gsave\n");
fprintf(fd, "100 dict begin\n");
if (pw != 0 && ph != 0)
! fprintf(fd, "%f %f scale\n",
! pw*PS_UNIT_SIZE, ph*PS_UNIT_SIZE);
else
fprintf(fd, "%f %f scale\n", prw, prh);
PSpage(fd, tif, w, h);
--- 372,392 ----
fprintf(fd, "gsave\n");
fprintf(fd, "100 dict begin\n");
if (pw != 0 && ph != 0)
! if (maintainAspect) {
! scale = ((pw*PS_UNIT_SIZE/prw) <
! (ph*PS_UNIT_SIZE/prh)) ?
! (pw*PS_UNIT_SIZE/prw) :
! (ph*PS_UNIT_SIZE/prh);
! if (scale > 1.0)
! scale = 1.0;
! fprintf(fd, "0 %f translate\n",
! ph*PS_UNIT_SIZE-prh*scale);
! fprintf(fd, "%f %f scale\n",
! prw*scale, prh*scale);
! }
! else
! fprintf(fd, "%f %f scale\n",
! pw*PS_UNIT_SIZE, ph*PS_UNIT_SIZE);
else
fprintf(fd, "%f %f scale\n", prw, prh);
PSpage(fd, tif, w, h);
***************
*** 403,408 ****
--- 426,441 ----
%%EndFeature\n\
";
+ static char AvoidDeadZonePreamble[] = "\
+ gsave newpath clippath pathbbox grestore\n\
+ 4 2 roll 2 copy translate\n\
+ exch 3 1 roll sub 3 1 roll sub exch\n\
+ currentpagedevice /PageSize get aload pop\n\
+ exch 3 1 roll div 3 1 roll div abs exch abs\n\
+ 2 copy gt { exch } if pop\n\
+ dup 1 lt { dup scale } { pop } ifelse\n\
+ ";
+
void
PSHead(FILE *fd, TIFF *tif, uint32 w, uint32 h, float pw, float ph,
float ox, float oy)
***************
*** 428,433 ****
--- 461,468 ----
fprintf(fd, "%s", DuplexPreamble);
if (PStumble)
fprintf(fd, "%s", TumblePreamble);
+ if (PSavoiddeadzone)
+ fprintf(fd, "%s", AvoidDeadZonePreamble);
fprintf(fd, "%%%%EndSetup\n");
}
***************
*** 1312,1318 ****
ascii85breaklen = 2*MAXLINE;
}
}
- p += 4;
}
_TIFFmemcpy(ascii85buf, p, n);
ascii85count = n;
--- 1347,1352 ----
***************
*** 1344,1349 ****
--- 1378,1385 ----
" -o # convert directory at file offset #",
" -O file write PostScript to file instead of standard output",
" -a convert all directories in file (default is first)",
+ " -m maintain aspect ratio and size if possible",
+ " -z avoid printing in the deadzone (uses PostScript Level II)",
" -p generate regular PostScript",
" -s generate PostScript for a single image",
" -T print pages for top edge binding",
-------------------------------------------------------------------------
| Feith Systems | Voice: 1-215-646-8000 | Email: john@feith.com |
| John Wehle | Fax: 1-215-540-5495 | |
-------------------------------------------------------------------------