summaryrefslogtreecommitdiff
path: root/backend/dvi/mdvi-lib/sp-epsf.c
diff options
context:
space:
mode:
authorPerberos <[email protected]>2011-11-09 18:17:43 -0300
committerPerberos <[email protected]>2011-11-09 18:17:43 -0300
commitf6ce926719943751cf65cacde7fae050593eb2d6 (patch)
tree9224d1751678cf2d1fbd0431f128b711311c0287 /backend/dvi/mdvi-lib/sp-epsf.c
downloadatril-f6ce926719943751cf65cacde7fae050593eb2d6.tar.bz2
atril-f6ce926719943751cf65cacde7fae050593eb2d6.tar.xz
inicial
Diffstat (limited to 'backend/dvi/mdvi-lib/sp-epsf.c')
-rw-r--r--backend/dvi/mdvi-lib/sp-epsf.c311
1 files changed, 311 insertions, 0 deletions
diff --git a/backend/dvi/mdvi-lib/sp-epsf.c b/backend/dvi/mdvi-lib/sp-epsf.c
new file mode 100644
index 00000000..703a9c8c
--- /dev/null
+++ b/backend/dvi/mdvi-lib/sp-epsf.c
@@ -0,0 +1,311 @@
+/*
+ * Copyright (C) 2000, Matias Atria
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+/* postscript specials */
+
+#include <config.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+#include "mdvi.h"
+#include "private.h"
+
+typedef struct {
+ double ox;
+ double oy;
+ double bw;
+ double bh;
+ double angle;
+} EpsfBox;
+
+#define LLX 0
+#define LLY 1
+#define URX 2
+#define URY 3
+#define RWI 4
+#define RHI 5
+#define HOFF 6
+#define VOFF 7
+#define HSIZE 8
+#define VSIZE 9
+#define HSCALE 10
+#define VSCALE 11
+#define ANGLE 12
+#define CLIP 13
+
+void epsf_special __PROTO((DviContext *dvi, char *prefix, char *arg));
+
+/* Note: the given strings are modified in place */
+static char *parse_epsf_special(EpsfBox *box, char **ret,
+ char *prefix, char *arg)
+{
+ static struct {
+ char *name;
+ int has_arg;
+ char *value;
+ } keys[] = {
+ {"llx", 1, "0"},
+ {"lly", 1, "0"},
+ {"urx", 1, "0"},
+ {"ury", 1, "0"},
+ {"rwi", 1, "0"},
+ {"rhi", 1, "0"},
+ {"hoffset", 1, "0"},
+ {"voffset", 1, "0"},
+ {"hsize", 1, "612"},
+ {"vsize", 1, "792"},
+ {"hscale", 1, "100"},
+ {"vscale", 1, "100"},
+ {"angle", 1, "0"},
+ {"clip", 0, "0"}
+ };
+#define NKEYS (sizeof(keys) / sizeof(keys[0]))
+ char *ptr;
+ char *filename;
+ int quoted;
+ double value[NKEYS];
+ Uchar present[NKEYS];
+ Buffer buffer;
+ char *name;
+ int i;
+ double originx;
+ double originy;
+ double hsize;
+ double vsize;
+ double hscale;
+ double vscale;
+
+ /* this special has the form
+ * ["]file.ps["] [key=valye]*
+ */
+
+ /* scan the filename */
+ while(*arg == ' ' || *arg == '\t')
+ arg++;
+
+ /* make a copy of the string */
+ ptr = arg;
+
+ if(*ptr == '"')
+ for(name = ++ptr; *ptr && *ptr != '"'; ptr++);
+ else
+ for(name = ptr; *ptr && *ptr != ' ' && *ptr != '\t'; ptr++);
+ if(ptr == name)
+ return NULL;
+ *ptr++ = 0;
+ filename = name;
+
+ /* reset values to defaults */
+ for(i = 0; i < NKEYS; i++) {
+ value[i] = atof(keys[i].value);
+ present[i] = 0;
+ }
+
+ buff_init(&buffer);
+ buff_add(&buffer, "@beginspecial ", 0);
+
+ quoted = 0;
+ while(*ptr) {
+ const char *keyname;
+ char *val;
+ char *p;
+
+ while(*ptr == ' ' || *ptr == '\t')
+ ptr++;
+ keyname = ptr;
+
+ /* get the whole key=value pair */
+ for(; *ptr && *ptr != ' ' && *ptr != '\t'; ptr++);
+
+ if(*ptr) *ptr++ = 0;
+ /* now we shouldn't touch `ptr' anymore */
+
+ /* now work on this pair */
+ p = strchr(keyname, '=');
+ if(p == NULL)
+ val = NULL;
+ else {
+ *p++ = 0;
+ if(*p == '"') {
+ val = ++p;
+ /* skip until closing quote */
+ while(*p && *p != '"')
+ p++;
+ if(*p != '"')
+ mdvi_warning(
+ _("%s: malformed value for key `%s'\n"),
+ filename, keyname);
+ } else
+ val = p;
+ }
+
+ /* lookup the key */
+ for(i = 0; i < NKEYS; i++)
+ if(STRCEQ(keys[i].name, keyname))
+ break;
+ if(i == NKEYS) {
+ mdvi_warning(_("%s: unknown key `%s' ignored\n"),
+ filename, keyname);
+ continue;
+ }
+ if(keys[i].has_arg && val == NULL) {
+ mdvi_warning(_("%s: no argument for key `%s', using defaults\n"),
+ filename, keyname);
+ val = keys[i].value;
+ } else if(!keys[i].has_arg && val) {
+ mdvi_warning(_("%s: argument `%s' ignored for key `%s'\n"),
+ filename, val, keyname);
+ val = NULL;
+ }
+ if(val)
+ value[i] = atof(val);
+
+ /* put the argument */
+ buff_add(&buffer, val, 0);
+ buff_add(&buffer, " @", 2);
+ buff_add(&buffer, keyname, 0);
+ buff_add(&buffer, " ", 1);
+
+ /* remember that this option was given */
+ present[i] = 0xff;
+ }
+ buff_add(&buffer, " @setspecial", 0);
+
+ /* now compute the bounding box (code comes from dvips) */
+ originx = 0;
+ originy = 0;
+ hscale = 1;
+ vscale = 1;
+ hsize = 0;
+ vsize = 0;
+
+ if(present[HSIZE])
+ hsize = value[HSIZE];
+ if(present[VSIZE])
+ vsize = value[VSIZE];
+ if(present[HOFF])
+ originx = value[HOFF];
+ if(present[VOFF])
+ originy = value[VOFF];
+ if(present[HSCALE])
+ hscale = value[HSCALE] / 100.0;
+ if(present[VSCALE])
+ vscale = value[VSCALE] / 100.0;
+ if(present[URX] && present[LLX])
+ hsize = value[URX] - value[LLX];
+ if(present[URY] && present[LLY])
+ vsize = value[URY] - value[LLY];
+ if(present[RWI] || present[RHI]) {
+ if(present[RWI] && !present[RHI])
+ hscale = vscale = value[RWI] / (10.0 * hsize);
+ else if(present[RHI] && !present[RWI])
+ hscale = vscale = value[RHI] / (10.0 * vsize);
+ else {
+ hscale = value[RWI] / (10.0 * hsize);
+ vscale = value[RHI] / (10.0 * vsize);
+ }
+ }
+
+ box->ox = originx;
+ box->oy = originy;
+ box->bw = hsize * hscale;
+ box->bh = vsize * vscale;
+ box->angle = value[ANGLE];
+
+ *ret = buffer.data;
+
+ return filename;
+}
+
+void epsf_special(DviContext *dvi, char *prefix, char *arg)
+{
+ char *file;
+ char *special;
+ char *psfile;
+ char *tmp;
+ EpsfBox box = {0, 0, 0, 0};
+ int x, y;
+ int w, h;
+ double xf, vf;
+ struct stat buf;
+
+ file = parse_epsf_special(&box, &special, prefix, arg);
+ if (file != NULL)
+ mdvi_free (special);
+
+ xf = dvi->params.dpi * dvi->params.mag / (72.0 * dvi->params.hshrink);
+ vf = dvi->params.vdpi * dvi->params.mag / (72.0 * dvi->params.vshrink);
+ w = FROUND(box.bw * xf);
+ h = FROUND(box.bh * vf);
+ x = FROUND(box.ox * xf) + dvi->pos.hh;
+ y = FROUND(box.oy * vf) + dvi->pos.vv - h + 1;
+
+ if (!file || !dvi->device.draw_ps) {
+ dvi->device.draw_rule (dvi, x, y, w, h, 0);
+ return;
+ }
+
+ if (file[0] == '/') { /* Absolute path */
+ if (stat (file, &buf) == 0)
+ dvi->device.draw_ps (dvi, file, x, y, w, h);
+ else
+ dvi->device.draw_rule (dvi, x, y, w, h, 0);
+ return;
+ }
+
+ tmp = mdvi_strrstr (dvi->filename, "/");
+ if (tmp) { /* Document directory */
+ int path_len = strlen (dvi->filename) - strlen (tmp + 1);
+ int file_len = strlen (file);
+
+ psfile = mdvi_malloc (path_len + file_len + 1);
+ psfile[0] = '\0';
+ strncat (psfile, dvi->filename, path_len);
+ strncat (psfile, file, file_len);
+
+ if (stat (psfile, &buf) == 0) {
+ dvi->device.draw_ps (dvi, psfile, x, y, w, h);
+ mdvi_free (psfile);
+
+ return;
+ }
+
+ mdvi_free (psfile);
+ }
+
+ psfile = mdvi_build_path_from_cwd (file);
+ if (stat (psfile, &buf) == 0) { /* Current working dir */
+ dvi->device.draw_ps (dvi, psfile, x, y, w, h);
+ mdvi_free (psfile);
+
+ return;
+ }
+
+ mdvi_free (psfile);
+
+ psfile = kpse_find_pict (file);
+ if (psfile) { /* kpse */
+ dvi->device.draw_ps (dvi, psfile, x, y, w, h);
+ } else {
+ dvi->device.draw_rule(dvi, x, y, w, h, 0);
+ }
+
+ free (psfile);
+}