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llpp/link.c
Nicolas Ojeda Bar 9f0e1ad45a Sync with upstream
2016-07-18 00:15:39 +02:00

4772 lines
131 KiB
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/* lots of code c&p-ed directly from mupdf */
#define CAML_NAME_SPACE
#include <errno.h>
#include <stdio.h>
#include <ctype.h>
#include <string.h>
#include <stdlib.h>
#include <signal.h>
#include <wchar.h>
#include <unistd.h>
#include <pthread.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include <sys/utsname.h>
#ifdef __CYGWIN__
#include <cygwin/socket.h> /* FIONREAD */
#else
#include <spawn.h>
#endif
#include <regex.h>
#include <stdarg.h>
#include <limits.h>
#include <inttypes.h>
#ifdef __COCOA__
#include <CoreFoundation/CoreFoundation.h>
#endif
#ifdef __APPLE__
#include <OpenGL/gl.h>
#else
#include <GL/gl.h>
#endif
#include <caml/fail.h>
#include <caml/alloc.h>
#include <caml/memory.h>
#include <caml/unixsupport.h>
#if __GNUC__ < 5 && !defined __clang__
/* At least gcc (Gentoo 4.9.3 p1.0, pie-0.6.2) 4.9.3 emits erroneous
clobbered diagnostics */
#pragma GCC diagnostic ignored "-Wclobbered"
#endif
#include <mupdf/fitz.h>
#include <mupdf/pdf.h>
#include <ft2build.h>
#include FT_FREETYPE_H
#ifdef USE_FONTCONFIG
#include <fontconfig/fontconfig.h>
#endif
#define PIGGYBACK
#define CACHE_PAGEREFS
#ifndef __USE_GNU
extern char **environ;
#endif
#if defined __GNUC__
#define NORETURN_ATTR __attribute__ ((noreturn))
#define UNUSED_ATTR __attribute__ ((unused))
#if !defined __clang__
#define OPTIMIZE_ATTR(n) __attribute__ ((optimize ("O"#n)))
#else
#define OPTIMIZE_ATTR(n)
#endif
#define GCC_FMT_ATTR(a, b) __attribute__ ((format (printf, a, b)))
#else
#define NORETURN_ATTR
#define UNUSED_ATTR
#define OPTIMIZE_ATTR(n)
#define GCC_FMT_ATTR(a, b)
#endif
#define FMT_s "zu"
#define FMT_ptr PRIxPTR
#define SCN_ptr SCNxPTR
#define FMT_ptr_cast(p) ((uintptr_t) (p))
#define SCN_ptr_cast(p) ((uintptr_t *) (p))
static void NORETURN_ATTR GCC_FMT_ATTR (2, 3)
err (int exitcode, const char *fmt, ...)
{
va_list ap;
int savederrno;
savederrno = errno;
va_start (ap, fmt);
vfprintf (stderr, fmt, ap);
va_end (ap);
fprintf (stderr, ": %s\n", strerror (savederrno));
fflush (stderr);
_exit (exitcode);
}
static void NORETURN_ATTR GCC_FMT_ATTR (2, 3)
errx (int exitcode, const char *fmt, ...)
{
va_list ap;
va_start (ap, fmt);
vfprintf (stderr, fmt, ap);
va_end (ap);
fputc ('\n', stderr);
fflush (stderr);
_exit (exitcode);
}
#ifndef GL_TEXTURE_RECTANGLE_ARB
#define GL_TEXTURE_RECTANGLE_ARB 0x84F5
#endif
#ifdef USE_NPOT
#define TEXT_TYPE GL_TEXTURE_2D
#else
#define TEXT_TYPE GL_TEXTURE_RECTANGLE_ARB
#endif
#ifndef GL_BGRA
#define GL_BGRA 0x80E1
#endif
#ifndef GL_UNSIGNED_INT_8_8_8_8
#define GL_UNSIGNED_INT_8_8_8_8 0x8035
#endif
#ifndef GL_UNSIGNED_INT_8_8_8_8_REV
#define GL_UNSIGNED_INT_8_8_8_8_REV 0x8367
#endif
#if 0
#define lprintf printf
#else
#define lprintf(...)
#endif
#define ARSERT(cond) for (;;) { \
if (!(cond)) { \
errx (1, "%s:%d " #cond, __FILE__, __LINE__); \
} \
break; \
}
struct slice {
int h;
int texindex;
};
struct tile {
int w, h;
int slicecount;
int sliceheight;
struct bo *pbo;
fz_pixmap *pixmap;
struct slice slices[1];
};
struct pagedim {
int pageno;
int rotate;
int left;
int tctmready;
fz_irect bounds;
fz_rect pagebox;
fz_rect mediabox;
fz_matrix ctm, zoomctm, lctm, tctm;
};
struct slink {
enum { SLINK, SANNOT } tag;
fz_irect bbox;
union {
fz_link *link;
fz_annot *annot;
} u;
};
struct annot {
fz_irect bbox;
fz_annot *annot;
};
struct page {
int tgen;
int sgen;
int agen;
int pageno;
int pdimno;
fz_stext_page *text;
fz_stext_sheet *sheet;
fz_page *fzpage;
fz_display_list *dlist;
int slinkcount;
struct slink *slinks;
int annotcount;
struct annot *annots;
struct mark {
int i;
fz_stext_span *span;
} fmark, lmark;
};
struct {
int sliceheight;
struct pagedim *pagedims;
int pagecount;
int pagedimcount;
fz_document *doc;
fz_context *ctx;
int w, h;
int texindex;
int texcount;
GLuint *texids;
GLenum texiform;
GLenum texform;
GLenum texty;
fz_colorspace *colorspace;
struct {
int w, h;
struct slice *slice;
} *texowners;
int rotate;
enum { FitWidth, FitProportional, FitPage } fitmodel;
int trimmargins;
int needoutline;
int gen;
int aalevel;
int trimanew;
fz_irect trimfuzz;
fz_pixmap *pig;
pthread_t thread;
int csock;
FT_Face face;
char *trimcachepath;
int cxack;
int dirty;
GLuint stid;
int bo_usable;
GLuint boid;
void (*glBindBufferARB) (GLenum, GLuint);
GLboolean (*glUnmapBufferARB) (GLenum);
void *(*glMapBufferARB) (GLenum, GLenum);
void (*glBufferDataARB) (GLenum, GLsizei, void *, GLenum);
void (*glGenBuffersARB) (GLsizei, GLuint *);
void (*glDeleteBuffersARB) (GLsizei, GLuint *);
GLfloat texcoords[8];
GLfloat vertices[16];
#ifdef CACHE_PAGEREFS
struct {
int idx;
int count;
pdf_obj **objs;
pdf_document *pdf;
} pdflut;
#endif
} state;
struct bo {
GLuint id;
void *ptr;
size_t size;
};
static void UNUSED_ATTR debug_rect (const char *cap, fz_rect r)
{
printf ("%s(rect) %.2f,%.2f,%.2f,%.2f\n", cap, r.x0, r.y0, r.x1, r.y1);
}
static void UNUSED_ATTR debug_bbox (const char *cap, fz_irect r)
{
printf ("%s(bbox) %d,%d,%d,%d\n", cap, r.x0, r.y0, r.x1, r.y1);
}
static void UNUSED_ATTR debug_matrix (const char *cap, fz_matrix m)
{
printf ("%s(matrix) %.2f,%.2f,%.2f,%.2f %.2f %.2f\n", cap,
m.a, m.b, m.c, m.d, m.e, m.f);
}
static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
static void lock (const char *cap)
{
int ret = pthread_mutex_lock (&mutex);
if (ret) {
errx (1, "%s: pthread_mutex_lock: %s", cap, strerror (ret));
}
}
static void unlock (const char *cap)
{
int ret = pthread_mutex_unlock (&mutex);
if (ret) {
errx (1, "%s: pthread_mutex_unlock: %s", cap, strerror (ret));
}
}
static int trylock (const char *cap)
{
int ret = pthread_mutex_trylock (&mutex);
if (ret && ret != EBUSY) {
errx (1, "%s: pthread_mutex_trylock: %s", cap, strerror (ret));
}
return ret == EBUSY;
}
static void *parse_pointer (const char *cap, const char *s)
{
int ret;
void *ptr;
ret = sscanf (s, "%" SCN_ptr, SCN_ptr_cast (&ptr));
if (ret != 1) {
errx (1, "%s: cannot parse pointer in `%s'", cap, s);
}
return ptr;
}
static double now (void)
{
struct timeval tv;
if (gettimeofday (&tv, NULL)) {
err (1, "gettimeofday");
}
return tv.tv_sec + tv.tv_usec*1e-6;
}
static int hasdata (void)
{
int ret, avail;
ret = ioctl (state.csock, FIONREAD, &avail);
if (ret) err (1, "hasdata: FIONREAD error ret=%d", ret);
return avail > 0;
}
CAMLprim value ml_hasdata (value fd_v)
{
CAMLparam1 (fd_v);
int ret, avail;
ret = ioctl (Int_val (fd_v), FIONREAD, &avail);
if (ret) uerror ("ioctl (FIONREAD)", Nothing);
CAMLreturn (Val_bool (avail > 0));
}
static void readdata (int fd, void *p, int size)
{
ssize_t n;
again:
n = read (fd, p, size);
if (n < 0) {
if (errno == EINTR) goto again;
err (1, "read (fd %d, req %d, ret %zd)", fd, size, n);
}
if (n - size) {
if (!n) errx (1, "EOF while reading");
errx (1, "read (fd %d, req %d, ret %zd)", fd, size, n);
}
}
static void writedata (int fd, char *p, int size)
{
ssize_t n;
/* One should lookup type punning/strict aliasing etc in standard,DRs,Web to
convince herself that this is:
a. safe
b. practically the only way to achieve the result
(union puns notwithstanding) */
memcpy (p, &size, 4);
n = write (fd, p, size + 4);
if (n - size - 4) {
if (!n) errx (1, "EOF while writing data");
err (1, "write (fd %d, req %d, ret %zd)", fd, size + 4, n);
}
}
static int readlen (int fd)
{
/* Type punned unions here. Why? Less code (Adjusted by more comments).
https://en.wikipedia.org/wiki/Type_punning */
union { int len; char raw[4]; } buf;
readdata (fd, buf.raw, 4);
return buf.len;
}
CAMLprim void ml_wcmd (value fd_v, value bytes_v, value len_v)
{
CAMLparam3 (fd_v, bytes_v, len_v);
writedata (Int_val (fd_v), &Byte (bytes_v, 0), Int_val (len_v));
CAMLreturn0;
}
CAMLprim value ml_rcmd (value fd_v)
{
CAMLparam1 (fd_v);
CAMLlocal1 (strdata_v);
int fd = Int_val (fd_v);
int len = readlen (fd);
strdata_v = caml_alloc_string (len);
readdata (fd, String_val (strdata_v), len);
CAMLreturn (strdata_v);
}
static void GCC_FMT_ATTR (1, 2) printd (const char *fmt, ...)
{
int size = 200, len;
va_list ap;
char *buf;
buf = malloc (size);
for (;;) {
if (!buf) err (1, "malloc for temp buf (%d bytes) failed", size);
va_start (ap, fmt);
len = vsnprintf (buf + 4, size - 4, fmt, ap);
va_end (ap);
if (len > -1) {
if (len < size - 4) {
writedata (state.csock, buf, len);
break;
}
else size = len + 5;
}
else {
err (1, "vsnprintf for `%s' failed", fmt);
}
buf = realloc (buf, size);
}
free (buf);
}
static void closedoc (void)
{
#ifdef CACHE_PAGEREFS
if (state.pdflut.objs) {
int i;
for (i = 0; i < state.pdflut.count; ++i) {
pdf_drop_obj (state.ctx, state.pdflut.objs[i]);
}
free (state.pdflut.objs);
state.pdflut.objs = NULL;
state.pdflut.idx = 0;
}
#endif
if (state.doc) {
fz_drop_document (state.ctx, state.doc);
state.doc = NULL;
}
}
static int openxref (char *filename, char *password)
{
int i;
for (i = 0; i < state.texcount; ++i) {
state.texowners[i].w = -1;
state.texowners[i].slice = NULL;
}
closedoc ();
state.dirty = 0;
if (state.pagedims) {
free (state.pagedims);
state.pagedims = NULL;
}
state.pagedimcount = 0;
fz_set_aa_level (state.ctx, state.aalevel);
#ifdef CSS_HACK_TO_READ_EPUBS_COMFORTABLY
fz_set_user_css (state.ctx,
"body { margin-left: 20%; margin-right: 20%; }");
#endif
state.doc = fz_open_document (state.ctx, filename);
if (fz_needs_password (state.ctx, state.doc)) {
if (password && !*password) {
printd ("pass");
return 0;
}
else {
int ok = fz_authenticate_password (state.ctx, state.doc, password);
if (!ok) {
printd ("pass fail");
return 0;
}
}
}
state.pagecount = fz_count_pages (state.ctx, state.doc);
return 1;
}
static void pdfinfo (void)
{
pdf_document *pdf = pdf_specifics (state.ctx, state.doc);
if (pdf) {
pdf_obj *infoobj;
printd ("info PDF version\t%d.%d",
pdf->version / 10, pdf->version % 10);
infoobj = pdf_dict_gets (state.ctx, pdf_trailer (state.ctx,
pdf), "Info");
if (infoobj) {
unsigned int i;
char *s;
char *items[] = { "Title", "Author", "Creator",
"Producer", "CreationDate" };
for (i = 0; i < sizeof (items) / sizeof (*items); ++i) {
pdf_obj *obj = pdf_dict_gets (state.ctx, infoobj, items[i]);
s = pdf_to_utf8 (state.ctx, pdf, obj);
if (*s) printd ("info %s\t%s", items[i], s);
fz_free (state.ctx, s);
}
}
printd ("infoend");
}
}
static void unlinktile (struct tile *tile)
{
int i;
for (i = 0; i < tile->slicecount; ++i) {
struct slice *s = &tile->slices[i];
if (s->texindex != -1) {
if (state.texowners[s->texindex].slice == s) {
state.texowners[s->texindex].slice = NULL;
}
}
}
}
static void freepage (struct page *page)
{
if (!page) return;
if (page->text) {
fz_drop_stext_page (state.ctx, page->text);
}
if (page->sheet) {
fz_drop_stext_sheet (state.ctx, page->sheet);
}
if (page->slinks) {
free (page->slinks);
}
fz_drop_display_list (state.ctx, page->dlist);
fz_drop_page (state.ctx, page->fzpage);
free (page);
}
static void freetile (struct tile *tile)
{
unlinktile (tile);
if (!tile->pbo) {
#ifndef PIGGYBACK
fz_drop_pixmap (state.ctx, tile->pixmap);
#else
if (state.pig) {
fz_drop_pixmap (state.ctx, state.pig);
}
state.pig = tile->pixmap;
#endif
}
else {
free (tile->pbo);
fz_drop_pixmap (state.ctx, tile->pixmap);
}
free (tile);
}
#ifdef __ALTIVEC__
#include <stdint.h>
#include <altivec.h>
static int cacheline32bytes;
static void __attribute__ ((constructor)) clcheck (void)
{
char **envp = environ;
unsigned long *auxv;
while (*envp++);
for (auxv = (unsigned long *) envp; *auxv != 0; auxv += 2) {
if (*auxv == 19) {
cacheline32bytes = auxv[1] == 32;
return;
}
}
}
static void OPTIMIZE_ATTR (3) clearpixmap (fz_pixmap *pixmap)
{
size_t size = pixmap->w * pixmap->h * pixmap->n;
if (cacheline32bytes && size > 32) {
intptr_t a1, a2, diff;
size_t sizea, i;
vector unsigned char v = vec_splat_u8 (-1);
vector unsigned char *p;
a1 = a2 = (intptr_t) pixmap->samples;
a2 = (a1 + 31) & ~31;
diff = a2 - a1;
sizea = size - diff;
p = (void *) a2;
while (a1 != a2) *(char *) a1++ = 0xff;
for (i = 0; i < (sizea & ~31); i += 32) {
__asm volatile ("dcbz %0, %1"::"b"(a2),"r"(i));
vec_st (v, i, p);
vec_st (v, i + 16, p);
}
while (i < sizea) *((char *) a1 + i++) = 0xff;
}
else fz_clear_pixmap_with_value (state.ctx, pixmap, 0xff);
}
#else
#define clearpixmap(p) fz_clear_pixmap_with_value (state.ctx, p, 0xff)
#endif
static void trimctm (pdf_page *page, int pindex)
{
fz_matrix ctm;
struct pagedim *pdim = &state.pagedims[pindex];
if (!page) return;
if (!pdim->tctmready) {
fz_rect realbox, mediabox;
fz_matrix rm, sm, tm, im, ctm1, page_ctm;
fz_rotate (&rm, -pdim->rotate);
fz_scale (&sm, 1, -1);
fz_concat (&ctm, &rm, &sm);
realbox = pdim->mediabox;
fz_transform_rect (&realbox, &ctm);
fz_translate (&tm, -realbox.x0, -realbox.y0);
fz_concat (&ctm1, &ctm, &tm);
pdf_page_transform (state.ctx, page, &mediabox, &page_ctm);
fz_invert_matrix (&im, &page_ctm);
fz_concat (&ctm, &im, &ctm1);
pdim->tctm = ctm;
pdim->tctmready = 1;
}
}
static fz_matrix pagectm1 (fz_page *fzpage, struct pagedim *pdim)
{
fz_matrix ctm, tm;
int pdimno = pdim - state.pagedims;
if (pdf_specifics (state.ctx, state.doc)) {
trimctm (pdf_page_from_fz_page (state.ctx, fzpage), pdimno);
fz_concat (&ctm, &pdim->tctm, &pdim->ctm);
}
else {
fz_translate (&tm, -pdim->mediabox.x0, -pdim->mediabox.y0);
fz_concat (&ctm, &tm, &pdim->ctm);
}
return ctm;
}
static fz_matrix pagectm (struct page *page)
{
return pagectm1 (page->fzpage, &state.pagedims[page->pdimno]);
}
static void *loadpage (int pageno, int pindex)
{
fz_device *dev;
struct page *page;
page = calloc (sizeof (struct page), 1);
if (!page) {
err (1, "calloc page %d", pageno);
}
page->dlist = fz_new_display_list (state.ctx, NULL);
dev = fz_new_list_device (state.ctx, page->dlist);
fz_try (state.ctx) {
page->fzpage = fz_load_page (state.ctx, state.doc, pageno);
fz_run_page (state.ctx, page->fzpage, dev,
&fz_identity, NULL);
}
fz_catch (state.ctx) {
page->fzpage = NULL;
}
fz_close_device (state.ctx, dev);
fz_drop_device (state.ctx, dev);
page->pdimno = pindex;
page->pageno = pageno;
page->sgen = state.gen;
page->agen = state.gen;
page->tgen = state.gen;
return page;
}
static struct tile *alloctile (int h)
{
int i;
int slicecount;
size_t tilesize;
struct tile *tile;
slicecount = (h + state.sliceheight - 1) / state.sliceheight;
tilesize = sizeof (*tile) + ((slicecount - 1) * sizeof (struct slice));
tile = calloc (tilesize, 1);
if (!tile) {
err (1, "cannot allocate tile (%" FMT_s " bytes)", tilesize);
}
for (i = 0; i < slicecount; ++i) {
int sh = fz_mini (h, state.sliceheight);
tile->slices[i].h = sh;
tile->slices[i].texindex = -1;
h -= sh;
}
tile->slicecount = slicecount;
tile->sliceheight = state.sliceheight;
return tile;
}
static struct tile *rendertile (struct page *page, int x, int y, int w, int h,
struct bo *pbo)
{
fz_rect rect;
fz_irect bbox;
fz_matrix ctm;
fz_device *dev;
struct tile *tile;
struct pagedim *pdim;
tile = alloctile (h);
pdim = &state.pagedims[page->pdimno];
bbox = pdim->bounds;
bbox.x0 += x;
bbox.y0 += y;
bbox.x1 = bbox.x0 + w;
bbox.y1 = bbox.y0 + h;
if (state.pig) {
if (state.pig->w == w
&& state.pig->h == h
&& state.pig->colorspace == state.colorspace) {
tile->pixmap = state.pig;
tile->pixmap->x = bbox.x0;
tile->pixmap->y = bbox.y0;
}
else {
fz_drop_pixmap (state.ctx, state.pig);
}
state.pig = NULL;
}
if (!tile->pixmap) {
if (pbo) {
tile->pixmap =
fz_new_pixmap_with_bbox_and_data (state.ctx, state.colorspace,
&bbox, 1, pbo->ptr);
tile->pbo = pbo;
}
else {
tile->pixmap =
fz_new_pixmap_with_bbox (state.ctx, state.colorspace, &bbox, 1);
}
}
tile->w = w;
tile->h = h;
clearpixmap (tile->pixmap);
dev = fz_new_draw_device (state.ctx, NULL, tile->pixmap);
ctm = pagectm (page);
fz_rect_from_irect (&rect, &bbox);
fz_run_display_list (state.ctx, page->dlist, dev, &ctm, &rect, NULL);
fz_close_device (state.ctx, dev);
fz_drop_device (state.ctx, dev);
return tile;
}
#ifdef CACHE_PAGEREFS
/* modified mupdf/source/pdf/pdf-page.c:pdf_lookup_page_loc_imp
thanks to Robin Watts */
static void
pdf_collect_pages(pdf_document *doc, pdf_obj *node)
{
fz_context *ctx = state.ctx; /* doc->ctx; */
pdf_obj *kids;
int i, len;
if (state.pdflut.idx == state.pagecount) return;
kids = pdf_dict_gets (ctx, node, "Kids");
len = pdf_array_len (ctx, kids);
if (len == 0)
fz_throw (ctx, FZ_ERROR_GENERIC, "malformed pages tree");
if (pdf_mark_obj (ctx, node))
fz_throw (ctx, FZ_ERROR_GENERIC, "cycle in page tree");
for (i = 0; i < len; i++) {
pdf_obj *kid = pdf_array_get (ctx, kids, i);
char *type = pdf_to_name (ctx, pdf_dict_gets (ctx, kid, "Type"));
if (*type
? !strcmp (type, "Pages")
: pdf_dict_gets (ctx, kid, "Kids")
&& !pdf_dict_gets (ctx, kid, "MediaBox")) {
pdf_collect_pages (doc, kid);
}
else {
if (*type
? strcmp (type, "Page") != 0
: !pdf_dict_gets (ctx, kid, "MediaBox"))
fz_warn (ctx, "non-page object in page tree (%s)", type);
state.pdflut.objs[state.pdflut.idx++] = pdf_keep_obj (ctx, kid);
}
}
pdf_unmark_obj (ctx, node);
}
static void
pdf_load_page_objs (pdf_document *doc)
{
pdf_obj *root = pdf_dict_gets (state.ctx,
pdf_trailer (state.ctx, doc), "Root");
pdf_obj *node = pdf_dict_gets (state.ctx, root, "Pages");
if (!node)
fz_throw (state.ctx, FZ_ERROR_GENERIC, "cannot find page tree");
state.pdflut.idx = 0;
pdf_collect_pages (doc, node);
}
#endif
static void initpdims (int wthack)
{
double start, end;
FILE *trimf = NULL;
fz_rect rootmediabox;
int pageno, trim, show;
int trimw = 0, cxcount;
fz_context *ctx = state.ctx;
pdf_document *pdf = pdf_specifics (ctx, state.doc);
fz_var (trimw);
fz_var (trimf);
fz_var (cxcount);
start = now ();
if (state.trimmargins && state.trimcachepath) {
trimf = fopen (state.trimcachepath, "rb");
if (!trimf) {
trimf = fopen (state.trimcachepath, "wb");
trimw = 1;
}
}
if (state.trimmargins || pdf || !state.cxack)
cxcount = state.pagecount;
else
cxcount = fz_mini (state.pagecount, 1);
if (pdf) {
pdf_obj *obj;
obj = pdf_dict_getp (ctx, pdf_trailer (ctx, pdf),
"Root/Pages/MediaBox");
pdf_to_rect (ctx, obj, &rootmediabox);
}
#ifdef CACHE_PAGEREFS
if (pdf && (!state.pdflut.objs || state.pdflut.pdf != pdf)) {
state.pdflut.objs = calloc (sizeof (*state.pdflut.objs), cxcount);
if (!state.pdflut.objs) {
err (1, "malloc pageobjs %zu %d %zu failed",
sizeof (*state.pdflut.objs), cxcount,
sizeof (*state.pdflut.objs) * cxcount);
}
state.pdflut.count = cxcount;
pdf_load_page_objs (pdf);
state.pdflut.pdf = pdf;
}
#endif
for (pageno = 0; pageno < cxcount; ++pageno) {
int rotate = 0;
struct pagedim *p;
fz_rect mediabox;
fz_var (rotate);
if (pdf) {
pdf_obj *pageref, *pageobj;
#ifdef CACHE_PAGEREFS
pageref = state.pdflut.objs[pageno];
#else
pageref = pdf_lookup_page_obj (ctx, pdf, pageno);
#endif
pageobj = pdf_resolve_indirect (ctx, pageref);
rotate = pdf_to_int (ctx, pdf_dict_gets (ctx, pageobj, "Rotate"));
if (state.trimmargins) {
pdf_obj *obj;
pdf_page *page;
fz_try (ctx) {
page = pdf_load_page (ctx, pdf, pageno);
obj = pdf_dict_gets (ctx, pageobj, "llpp.TrimBox");
trim = state.trimanew || !obj;
if (trim) {
fz_rect rect;
fz_device *dev;
fz_matrix ctm, page_ctm;
dev = fz_new_bbox_device (ctx, &rect);
dev->hints |= FZ_IGNORE_SHADE;
pdf_page_transform (ctx, page, &mediabox, &page_ctm);
fz_invert_matrix (&ctm, &page_ctm);
pdf_run_page (ctx, page, dev, &fz_identity, NULL);
fz_close_device (ctx, dev);
fz_drop_device (ctx, dev);
rect.x0 += state.trimfuzz.x0;
rect.x1 += state.trimfuzz.x1;
rect.y0 += state.trimfuzz.y0;
rect.y1 += state.trimfuzz.y1;
fz_transform_rect (&rect, &ctm);
fz_intersect_rect (&rect, &mediabox);
if (!fz_is_empty_rect (&rect)) {
mediabox = rect;
}
obj = pdf_new_array (ctx, pdf, 4);
pdf_array_push (ctx, obj, pdf_new_real (ctx, pdf,
mediabox.x0));
pdf_array_push (ctx, obj, pdf_new_real (ctx, pdf,
mediabox.y0));
pdf_array_push (ctx, obj, pdf_new_real (ctx, pdf,
mediabox.x1));
pdf_array_push (ctx, obj, pdf_new_real (ctx, pdf,
mediabox.y1));
pdf_dict_puts (ctx, pageobj, "llpp.TrimBox", obj);
}
else {
mediabox.x0 = pdf_to_real (ctx,
pdf_array_get (ctx, obj, 0));
mediabox.y0 = pdf_to_real (ctx,
pdf_array_get (ctx, obj, 1));
mediabox.x1 = pdf_to_real (ctx,
pdf_array_get (ctx, obj, 2));
mediabox.y1 = pdf_to_real (ctx,
pdf_array_get (ctx, obj, 3));
}
fz_drop_page (ctx, &page->super);
show = trim ? pageno % 5 == 0 : pageno % 20 == 0;
if (show) {
printd ("progress %f Trimming %d",
(double) (pageno + 1) / state.pagecount,
pageno + 1);
}
}
fz_catch (ctx) {
fprintf (stderr, "failed to load page %d\n", pageno+1);
}
}
else {
int empty = 0;
fz_rect cropbox;
pdf_to_rect (ctx,
pdf_dict_gets (ctx, pageobj, "MediaBox"),
&mediabox);
if (fz_is_empty_rect (&mediabox)) {
mediabox.x0 = 0;
mediabox.y0 = 0;
mediabox.x1 = 612;
mediabox.y1 = 792;
empty = 1;
}
pdf_to_rect (ctx,
pdf_dict_gets (ctx, pageobj, "CropBox"),
&cropbox);
if (!fz_is_empty_rect (&cropbox)) {
if (empty) {
mediabox = cropbox;
}
else {
fz_intersect_rect (&mediabox, &cropbox);
}
}
else {
if (empty) {
if (fz_is_empty_rect (&rootmediabox)) {
fprintf (stderr,
"cannot find page size for page %d\n",
pageno+1);
}
else {
mediabox = rootmediabox;
}
}
}
}
}
else {
if (state.trimmargins && trimw) {
fz_page *page;
fz_try (ctx) {
page = fz_load_page (ctx, state.doc, pageno);
fz_bound_page (ctx, page, &mediabox);
if (state.trimmargins) {
fz_rect rect;
fz_device *dev;
dev = fz_new_bbox_device (ctx, &rect);
dev->hints |= FZ_IGNORE_SHADE;
fz_run_page (ctx, page, dev, &fz_identity, NULL);
fz_close_device (ctx, dev);
fz_drop_device (ctx, dev);
rect.x0 += state.trimfuzz.x0;
rect.x1 += state.trimfuzz.x1;
rect.y0 += state.trimfuzz.y0;
rect.y1 += state.trimfuzz.y1;
fz_intersect_rect (&rect, &mediabox);
if (!fz_is_empty_rect (&rect)) {
mediabox = rect;
}
}
fz_drop_page (ctx, page);
if (!state.cxack) {
printd ("progress %f loading %d",
(double) (pageno + 1) / state.pagecount,
pageno + 1);
}
}
fz_catch (ctx) {
}
if (trimf) {
int n = fwrite (&mediabox, sizeof (mediabox), 1, trimf);
if (n - 1) {
err (1, "fwrite trim mediabox");
}
}
}
else {
if (trimf) {
int n = fread (&mediabox, sizeof (mediabox), 1, trimf);
if (n - 1) {
err (1, "fread trim mediabox %d", pageno);
}
}
else {
fz_page *page;
fz_try (ctx) {
page = fz_load_page (ctx, state.doc, pageno);
fz_bound_page (ctx, page, &mediabox);
fz_drop_page (ctx, page);
show = !state.trimmargins && pageno % 20 == 0;
if (show) {
printd ("progress %f Gathering dimensions %d",
(double) (pageno) / state.pagecount,
pageno);
}
}
fz_catch (ctx) {
fprintf (stderr, "failed to load page %d\n", pageno);
}
}
}
}
if (state.pagedimcount == 0
|| (p = &state.pagedims[state.pagedimcount-1], p->rotate != rotate)
|| memcmp (&p->mediabox, &mediabox, sizeof (mediabox))) {
size_t size;
size = (state.pagedimcount + 1) * sizeof (*state.pagedims);
state.pagedims = realloc (state.pagedims, size);
if (!state.pagedims) {
err (1, "realloc pagedims to %" FMT_s " (%d elems)",
size, state.pagedimcount + 1);
}
p = &state.pagedims[state.pagedimcount++];
p->rotate = rotate;
p->mediabox = mediabox;
p->pageno = pageno;
}
}
end = now ();
if (!wthack) {
printd ("progress 1 %s %d pages in %f seconds",
state.trimmargins ? "Trimmed" : "Processed",
state.pagecount, end - start);
}
state.trimanew = 0;
if (trimf) {
if (fclose (trimf)) {
err (1, "fclose");
}
}
}
static void layout (void)
{
int pindex;
fz_rect box;
fz_matrix ctm, rm;
struct pagedim *p = p;
double zw, w, maxw = 0.0, zoom = zoom;
if (state.pagedimcount == 0) return;
switch (state.fitmodel) {
case FitProportional:
for (pindex = 0; pindex < state.pagedimcount; ++pindex) {
double x0, x1;
p = &state.pagedims[pindex];
fz_rotate (&rm, p->rotate + state.rotate);
box = p->mediabox;
fz_transform_rect (&box, &rm);
x0 = fz_min (box.x0, box.x1);
x1 = fz_max (box.x0, box.x1);
w = x1 - x0;
maxw = fz_max (w, maxw);
zoom = state.w / maxw;
}
break;
case FitPage:
maxw = state.w;
break;
case FitWidth:
break;
default:
ARSERT (0 && state.fitmodel);
}
for (pindex = 0; pindex < state.pagedimcount; ++pindex) {
fz_rect rect;
fz_matrix tm, sm;
p = &state.pagedims[pindex];
fz_rotate (&ctm, state.rotate);
fz_rotate (&rm, p->rotate + state.rotate);
box = p->mediabox;
fz_transform_rect (&box, &rm);
w = box.x1 - box.x0;
switch (state.fitmodel) {
case FitProportional:
p->left = ((maxw - w) * zoom) / 2.0;
break;
case FitPage:
{
double zh, h;
zw = maxw / w;
h = box.y1 - box.y0;
zh = state.h / h;
zoom = fz_min (zw, zh);
p->left = (maxw - (w * zoom)) / 2.0;
}
break;
case FitWidth:
p->left = 0;
zoom = state.w / w;
break;
}
fz_scale (&p->zoomctm, zoom, zoom);
fz_concat (&ctm, &p->zoomctm, &ctm);
fz_rotate (&rm, p->rotate);
p->pagebox = p->mediabox;
fz_transform_rect (&p->pagebox, &rm);
p->pagebox.x1 -= p->pagebox.x0;
p->pagebox.y1 -= p->pagebox.y0;
p->pagebox.x0 = 0;
p->pagebox.y0 = 0;
rect = p->pagebox;
fz_transform_rect (&rect, &ctm);
fz_round_rect (&p->bounds, &rect);
p->ctm = ctm;
fz_translate (&tm, 0, -p->mediabox.y1);
fz_scale (&sm, zoom, -zoom);
fz_concat (&ctm, &tm, &sm);
fz_concat (&p->lctm, &ctm, &rm);
p->tctmready = 0;
}
do {
int x0 = fz_mini (p->bounds.x0, p->bounds.x1);
int y0 = fz_mini (p->bounds.y0, p->bounds.y1);
int x1 = fz_maxi (p->bounds.x0, p->bounds.x1);
int y1 = fz_maxi (p->bounds.y0, p->bounds.y1);
int boundw = x1 - x0;
int boundh = y1 - y0;
printd ("pdim %d %d %d %d", p->pageno, boundw, boundh, p->left);
} while (p-- != state.pagedims);
}
static
struct anchor { int n; int x; int y; int w; int h; }
desttoanchor (fz_link_dest *dest)
{
int i;
struct anchor a;
struct pagedim *pdim = state.pagedims;
a.n = -1;
a.x = 0;
a.y = 0;
for (i = 0; i < state.pagedimcount; ++i) {
if (state.pagedims[i].pageno > dest->ld.gotor.page)
break;
pdim = &state.pagedims[i];
}
if (dest->ld.gotor.flags & fz_link_flag_t_valid) {
fz_point p;
if (dest->ld.gotor.flags & fz_link_flag_l_valid)
p.x = dest->ld.gotor.lt.x;
else
p.x = 0.0;
p.y = dest->ld.gotor.lt.y;
fz_transform_point (&p, &pdim->lctm);
a.x = p.x;
a.y = p.y;
}
if (dest->ld.gotor.page >= 0 && dest->ld.gotor.page < 1<<30) {
double x0, x1, y0, y1;
x0 = fz_min (pdim->bounds.x0, pdim->bounds.x1);
x1 = fz_max (pdim->bounds.x0, pdim->bounds.x1);
a.w = x1 - x0;
y0 = fz_min (pdim->bounds.y0, pdim->bounds.y1);
y1 = fz_max (pdim->bounds.y0, pdim->bounds.y1);
a.h = y1 - y0;
a.n = dest->ld.gotor.page;
}
return a;
}
static void recurse_outline (fz_outline *outline, int level)
{
while (outline) {
switch (outline->dest.kind) {
case FZ_LINK_GOTO:
{
struct anchor a = desttoanchor (&outline->dest);
if (a.n >= 0) {
printd ("o %d %d %d %d %s",
level, a.n, a.y, a.h, outline->title);
}
}
break;
case FZ_LINK_URI:
printd ("ou %d %" FMT_s " %s %s", level,
strlen (outline->title), outline->title,
outline->dest.ld.uri.uri);
break;
case FZ_LINK_NONE:
printd ("on %d %s", level, outline->title);
break;
default:
printd ("emsg Unhandled outline kind %d for %s\n",
outline->dest.kind, outline->title);
break;
}
if (outline->down) {
recurse_outline (outline->down, level + 1);
}
outline = outline->next;
}
}
static void process_outline (void)
{
fz_outline *outline;
if (!state.needoutline || !state.pagedimcount) return;
state.needoutline = 0;
outline = fz_load_outline (state.ctx, state.doc);
if (outline) {
recurse_outline (outline, 0);
fz_drop_outline (state.ctx, outline);
}
}
static char *strofspan (fz_stext_span *span)
{
char *p;
char utf8[10];
fz_stext_char *ch;
size_t size = 0, cap = 80;
p = malloc (cap + 1);
if (!p) return NULL;
for (ch = span->text; ch < span->text + span->len; ++ch) {
int n = fz_runetochar (utf8, ch->c);
if (size + n > cap) {
cap *= 2;
p = realloc (p, cap + 1);
if (!p) return NULL;
}
memcpy (p + size, utf8, n);
size += n;
}
p[size] = 0;
return p;
}
static int matchspan (regex_t *re, fz_stext_span *span,
int stop, int pageno, double start)
{
int ret;
char *p;
regmatch_t rm;
int a, b, c;
fz_rect sb, eb;
fz_point p1, p2, p3, p4;
p = strofspan (span);
if (!p) return -1;
ret = regexec (re, p, 1, &rm, 0);
if (ret) {
free (p);
if (ret != REG_NOMATCH) {
size_t size;
char errbuf[80];
size = regerror (ret, re, errbuf, sizeof (errbuf));
printd ("msg regexec error `%.*s'",
(int) size, errbuf);
return -1;
}
return 0;
}
else {
int l = span->len;
for (a = 0, c = 0; c < rm.rm_so && a < l; a++) {
c += fz_runelen (span->text[a].c);
}
for (b = a; c < rm.rm_eo - 1 && b < l; b++) {
c += fz_runelen (span->text[b].c);
}
if (fz_runelen (span->text[b].c) > 1) {
b = fz_maxi (0, b-1);
}
fz_stext_char_bbox (state.ctx, &sb, span, a);
fz_stext_char_bbox (state.ctx, &eb, span, b);
p1.x = sb.x0;
p1.y = sb.y0;
p2.x = eb.x1;
p2.y = sb.y0;
p3.x = eb.x1;
p3.y = eb.y1;
p4.x = sb.x0;
p4.y = eb.y1;
if (!stop) {
printd ("firstmatch %d %d %f %f %f %f %f %f %f %f",
pageno, 1,
p1.x, p1.y,
p2.x, p2.y,
p3.x, p3.y,
p4.x, p4.y);
printd ("progress 1 found at %d `%.*s' in %f sec",
pageno + 1, (int) (rm.rm_eo - rm.rm_so), &p[rm.rm_so],
now () - start);
}
else {
printd ("match %d %d %f %f %f %f %f %f %f %f",
pageno, 2,
p1.x, p1.y,
p2.x, p2.y,
p3.x, p3.y,
p4.x, p4.y);
}
free (p);
return 1;
}
}
static int compareblocks (const void *l, const void *r)
{
fz_stext_block const *ls = l;
fz_stext_block const *rs = r;
return ls->bbox.y0 - rs->bbox.y0;
}
/* wishful thinking function */
static void search (regex_t *re, int pageno, int y, int forward)
{
int i, j;
fz_device *tdev;
fz_stext_page *text;
fz_stext_sheet *sheet;
struct pagedim *pdim, *pdimprev;
int stop = 0, niters = 0;
double start, end;
fz_page *page;
start = now ();
while (pageno >= 0 && pageno < state.pagecount && !stop) {
if (niters++ == 5) {
niters = 0;
if (hasdata ()) {
printd ("progress 1 attention requested aborting search at %d",
pageno);
stop = 1;
}
else {
printd ("progress %f searching in page %d",
(double) (pageno + 1) / state.pagecount,
pageno);
}
}
pdimprev = NULL;
for (i = 0; i < state.pagedimcount; ++i) {
pdim = &state.pagedims[i];
if (pdim->pageno == pageno) {
goto found;
}
if (pdim->pageno > pageno) {
pdim = pdimprev;
goto found;
}
pdimprev = pdim;
}
pdim = pdimprev;
found:
sheet = fz_new_stext_sheet (state.ctx);
text = fz_new_stext_page (state.ctx, &pdim->mediabox);
tdev = fz_new_stext_device (state.ctx, sheet, text);
page = fz_load_page (state.ctx, state.doc, pageno);
{
fz_matrix ctm = pagectm1 (page, pdim);
fz_run_page (state.ctx, page, tdev, &ctm, NULL);
}
qsort (text->blocks, text->len, sizeof (*text->blocks), compareblocks);
fz_close_device (state.ctx, tdev);
fz_drop_device (state.ctx, tdev);
for (j = 0; j < text->len; ++j) {
int k;
fz_page_block *pb;
fz_stext_block *block;
pb = &text->blocks[forward ? j : text->len - 1 - j];
if (pb->type != FZ_PAGE_BLOCK_TEXT) continue;
block = pb->u.text;
for (k = 0; k < block->len; ++k) {
fz_stext_line *line;
fz_stext_span *span;
if (forward) {
line = &block->lines[k];
if (line->bbox.y0 < y + 1) continue;
}
else {
line = &block->lines[block->len - 1 - k];
if (line->bbox.y0 > y - 1) continue;
}
for (span = line->first_span; span; span = span->next) {
switch (matchspan (re, span, stop, pageno, start)) {
case 0: break;
case 1: stop = 1; break;
case -1: stop = 1; goto endloop;
}
}
}
}
if (forward) {
pageno += 1;
y = 0;
}
else {
pageno -= 1;
y = INT_MAX;
}
endloop:
fz_drop_stext_page (state.ctx, text);
fz_drop_stext_sheet (state.ctx, sheet);
fz_drop_page (state.ctx, page);
}
end = now ();
if (!stop) {
printd ("progress 1 no matches %f sec", end - start);
}
printd ("clearrects");
}
static void set_tex_params (int colorspace)
{
union {
unsigned char b;
unsigned int s;
} endianness = {1};
switch (colorspace) {
case 0:
state.texiform = GL_RGBA8;
state.texform = GL_RGBA;
state.texty = GL_UNSIGNED_BYTE;
state.colorspace = fz_device_rgb (state.ctx);
break;
case 1:
state.texiform = GL_RGBA8;
state.texform = GL_BGRA;
state.texty = endianness.s > 1
? GL_UNSIGNED_INT_8_8_8_8
: GL_UNSIGNED_INT_8_8_8_8_REV;
state.colorspace = fz_device_bgr (state.ctx);
break;
case 2:
state.texiform = GL_LUMINANCE_ALPHA;
state.texform = GL_LUMINANCE_ALPHA;
state.texty = GL_UNSIGNED_BYTE;
state.colorspace = fz_device_gray (state.ctx);
break;
default:
errx (1, "invalid colorspce %d", colorspace);
}
}
static void realloctexts (int texcount)
{
size_t size;
if (texcount == state.texcount) return;
if (texcount < state.texcount) {
glDeleteTextures (state.texcount - texcount,
state.texids + texcount);
}
size = texcount * sizeof (*state.texids);
state.texids = realloc (state.texids, size);
if (!state.texids) {
err (1, "realloc texids %" FMT_s, size);
}
size = texcount * sizeof (*state.texowners);
state.texowners = realloc (state.texowners, size);
if (!state.texowners) {
err (1, "realloc texowners %" FMT_s, size);
}
if (texcount > state.texcount) {
int i;
glGenTextures (texcount - state.texcount,
state.texids + state.texcount);
for (i = state.texcount; i < texcount; ++i) {
state.texowners[i].w = -1;
state.texowners[i].slice = NULL;
}
}
state.texcount = texcount;
state.texindex = 0;
}
static char *mbtoutf8 (char *s)
{
char *p, *r;
wchar_t *tmp;
size_t i, ret, len;
len = mbstowcs (NULL, s, strlen (s));
if (len == 0) {
return s;
}
else {
if (len == (size_t) -1) {
return s;
}
}
tmp = malloc (len * sizeof (wchar_t));
if (!tmp) {
return s;
}
ret = mbstowcs (tmp, s, len);
if (ret == (size_t) -1) {
free (tmp);
return s;
}
len = 0;
for (i = 0; i < ret; ++i) {
len += fz_runelen (tmp[i]);
}
p = r = malloc (len + 1);
if (!r) {
free (tmp);
return s;
}
for (i = 0; i < ret; ++i) {
p += fz_runetochar (p, tmp[i]);
}
*p = 0;
free (tmp);
return r;
}
CAMLprim value ml_mbtoutf8 (value s_v)
{
CAMLparam1 (s_v);
CAMLlocal1 (ret_v);
char *s, *r;
s = String_val (s_v);
r = mbtoutf8 (s);
if (r == s) {
ret_v = s_v;
}
else {
ret_v = caml_copy_string (r);
free (r);
}
CAMLreturn (ret_v);
}
static void * mainloop (void UNUSED_ATTR *unused)
{
char *p = NULL;
int len, ret, oldlen = 0;
fz_var (p);
fz_var (oldlen);
for (;;) {
len = readlen (state.csock);
if (len == 0) {
errx (1, "readlen returned 0");
}
if (oldlen < len + 1) {
p = realloc (p, len + 1);
if (!p) {
err (1, "realloc %d failed", len + 1);
}
oldlen = len + 1;
}
readdata (state.csock, p, len);
p[len] = 0;
if (!strncmp ("open", p, 4)) {
int wthack, off, ok = 0;
char *password;
char *filename;
char *utf8filename;
size_t filenamelen;
fz_var (ok);
ret = sscanf (p + 5, " %d %d %n", &wthack, &state.cxack, &off);
if (ret != 2) {
errx (1, "malformed open `%.*s' ret=%d", len, p, ret);
}
filename = p + 5 + off;
filenamelen = strlen (filename);
password = filename + filenamelen + 1;
lock ("open");
fz_try (state.ctx) {
ok = openxref (filename, password);
}
fz_catch (state.ctx) {
utf8filename = mbtoutf8 (filename);
printd ("msg Could not open %s", utf8filename);
}
if (ok) {
pdfinfo ();
initpdims (wthack);
}
unlock ("open");
if (ok) {
if (!wthack) {
utf8filename = mbtoutf8 (filename);
printd ("msg Opened %s (press h/F1 to get help)",
utf8filename);
if (utf8filename != filename) {
free (utf8filename);
}
}
state.needoutline = 1;
}
}
else if (!strncmp ("cs", p, 2)) {
int i, colorspace;
ret = sscanf (p + 2, " %d", &colorspace);
if (ret != 1) {
errx (1, "malformed cs `%.*s' ret=%d", len, p, ret);
}
lock ("cs");
set_tex_params (colorspace);
for (i = 0; i < state.texcount; ++i) {
state.texowners[i].w = -1;
state.texowners[i].slice = NULL;
}
unlock ("cs");
}
else if (!strncmp ("freepage", p, 8)) {
void *ptr;
ret = sscanf (p + 8, " %" SCN_ptr, SCN_ptr_cast (&ptr));
if (ret != 1) {
errx (1, "malformed freepage `%.*s' ret=%d", len, p, ret);
}
freepage (ptr);
}
else if (!strncmp ("freetile", p, 8)) {
void *ptr;
ret = sscanf (p + 8, " %" SCN_ptr, SCN_ptr_cast (&ptr));
if (ret != 1) {
errx (1, "malformed freetile `%.*s' ret=%d", len, p, ret);
}
freetile (ptr);
}
else if (!strncmp ("search", p, 6)) {
int icase, pageno, y, len2, forward;
char *pattern;
regex_t re;
ret = sscanf (p + 6, " %d %d %d %d,%n",
&icase, &pageno, &y, &forward, &len2);
if (ret != 4) {
errx (1, "malformed search `%s' ret=%d", p, ret);
}
pattern = p + 6 + len2;
ret = regcomp (&re, pattern,
REG_EXTENDED | (icase ? REG_ICASE : 0));
if (ret) {
char errbuf[80];
size_t size;
size = regerror (ret, &re, errbuf, sizeof (errbuf));
printd ("msg regcomp failed `%.*s'", (int) size, errbuf);
}
else {
search (&re, pageno, y, forward);
regfree (&re);
}
}
else if (!strncmp ("geometry", p, 8)) {
int w, h, fitmodel;
printd ("clear");
ret = sscanf (p + 8, " %d %d %d", &w, &h, &fitmodel);
if (ret != 3) {
errx (1, "malformed geometry `%.*s' ret=%d", len, p, ret);
}
lock ("geometry");
state.h = h;
if (w != state.w) {
int i;
state.w = w;
for (i = 0; i < state.texcount; ++i) {
state.texowners[i].slice = NULL;
}
}
state.fitmodel = fitmodel;
layout ();
process_outline ();
state.gen++;
unlock ("geometry");
printd ("continue %d", state.pagecount);
}
else if (!strncmp ("reqlayout", p, 9)) {
char *nameddest;
int rotate, off, h;
unsigned int fitmodel;
pdf_document *pdf;
printd ("clear");
ret = sscanf (p + 9, " %d %u %d %n",
&rotate, &fitmodel, &h, &off);
if (ret != 3) {
errx (1, "bad reqlayout line `%.*s' ret=%d", len, p, ret);
}
lock ("reqlayout");
pdf = pdf_specifics (state.ctx, state.doc);
if (state.rotate != rotate || state.fitmodel != fitmodel) {
state.gen += 1;
}
state.rotate = rotate;
state.fitmodel = fitmodel;
state.h = h;
layout ();
process_outline ();
nameddest = p + 9 + off;
if (pdf && nameddest && *nameddest) {
struct anchor a;
fz_link_dest dest;
pdf_obj *needle, *obj;
needle = pdf_new_string (state.ctx, pdf, nameddest,
strlen (nameddest));
obj = pdf_lookup_dest (state.ctx, pdf, needle);
if (obj) {
dest = pdf_parse_link_dest (state.ctx, pdf,
FZ_LINK_GOTO, obj);
a = desttoanchor (&dest);
if (a.n >= 0) {
printd ("a %d %d %d", a.n, a.x, a.y);
}
else {
printd ("emsg failed to parse destination `%s'\n",
nameddest);
}
}
else {
printd ("emsg destination `%s' not found\n",
nameddest);
}
pdf_drop_obj (state.ctx, needle);
}
state.gen++;
unlock ("reqlayout");
printd ("continue %d", state.pagecount);
}
else if (!strncmp ("page", p, 4)) {
double a, b;
struct page *page;
int pageno, pindex;
ret = sscanf (p + 4, " %d %d", &pageno, &pindex);
if (ret != 2) {
errx (1, "bad page line `%.*s' ret=%d", len, p, ret);
}
lock ("page");
a = now ();
page = loadpage (pageno, pindex);
b = now ();
unlock ("page");
printd ("page %" FMT_ptr " %f", FMT_ptr_cast (page), b - a);
}
else if (!strncmp ("tile", p, 4)) {
int x, y, w, h;
struct page *page;
struct tile *tile;
double a, b;
void *data;
ret = sscanf (p + 4, " %" SCN_ptr " %d %d %d %d %" SCN_ptr,
SCN_ptr_cast (&page), &x, &y, &w, &h,
SCN_ptr_cast (&data));
if (ret != 6) {
errx (1, "bad tile line `%.*s' ret=%d", len, p, ret);
}
lock ("tile");
a = now ();
tile = rendertile (page, x, y, w, h, data);
b = now ();
unlock ("tile");
printd ("tile %d %d %" FMT_ptr " %u %f",
x, y,
FMT_ptr_cast (tile),
tile->w * tile->h * tile->pixmap->n,
b - a);
}
else if (!strncmp ("trimset", p, 7)) {
fz_irect fuzz;
int trimmargins;
ret = sscanf (p + 7, " %d %d %d %d %d",
&trimmargins, &fuzz.x0, &fuzz.y0, &fuzz.x1, &fuzz.y1);
if (ret != 5) {
errx (1, "malformed trimset `%.*s' ret=%d", len, p, ret);
}
lock ("trimset");
state.trimmargins = trimmargins;
if (memcmp (&fuzz, &state.trimfuzz, sizeof (fuzz))) {
state.trimanew = 1;
state.trimfuzz = fuzz;
}
unlock ("trimset");
}
else if (!strncmp ("settrim", p, 7)) {
fz_irect fuzz;
int trimmargins;
ret = sscanf (p + 7, " %d %d %d %d %d",
&trimmargins, &fuzz.x0, &fuzz.y0, &fuzz.x1, &fuzz.y1);
if (ret != 5) {
errx (1, "malformed settrim `%.*s' ret=%d", len, p, ret);
}
printd ("clear");
lock ("settrim");
state.trimmargins = trimmargins;
state.needoutline = 1;
if (memcmp (&fuzz, &state.trimfuzz, sizeof (fuzz))) {
state.trimanew = 1;
state.trimfuzz = fuzz;
}
state.pagedimcount = 0;
free (state.pagedims);
state.pagedims = NULL;
initpdims (0);
layout ();
process_outline ();
unlock ("settrim");
printd ("continue %d", state.pagecount);
}
else if (!strncmp ("sliceh", p, 6)) {
int h;
ret = sscanf (p + 6, " %d", &h);
if (ret != 1) {
errx (1, "malformed sliceh `%.*s' ret=%d", len, p, ret);
}
if (h != state.sliceheight) {
int i;
state.sliceheight = h;
for (i = 0; i < state.texcount; ++i) {
state.texowners[i].w = -1;
state.texowners[i].h = -1;
state.texowners[i].slice = NULL;
}
}
}
else if (!strncmp ("interrupt", p, 9)) {
printd ("vmsg interrupted");
}
else {
errx (1, "unknown command %.*s", len, p);
}
}
return 0;
}
CAMLprim value ml_realloctexts (value texcount_v)
{
CAMLparam1 (texcount_v);
int ok;
if (trylock (__func__)) {
ok = 0;
goto done;
}
realloctexts (Int_val (texcount_v));
ok = 1;
unlock (__func__);
done:
CAMLreturn (Val_bool (ok));
}
static void recti (int x0, int y0, int x1, int y1)
{
GLfloat *v = state.vertices;
glVertexPointer (2, GL_FLOAT, 0, v);
v[0] = x0; v[1] = y0;
v[2] = x1; v[3] = y0;
v[4] = x0; v[5] = y1;
v[6] = x1; v[7] = y1;
glDrawArrays (GL_TRIANGLE_STRIP, 0, 4);
}
static void showsel (struct page *page, int ox, int oy)
{
int seen = 0;
fz_irect bbox;
fz_rect rect;
fz_stext_line *line;
fz_page_block *pageb;
fz_stext_block *block;
struct mark first, last;
unsigned char selcolor[] = {15,15,15,140};
first = page->fmark;
last = page->lmark;
if (!first.span || !last.span) return;
glEnable (GL_BLEND);
glBlendFunc (GL_SRC_ALPHA, GL_SRC_ALPHA);
glColor4ubv (selcolor);
ox += state.pagedims[page->pdimno].bounds.x0;
oy += state.pagedims[page->pdimno].bounds.y0;
for (pageb = page->text->blocks;
pageb < page->text->blocks + page->text->len;
++pageb) {
if (pageb->type != FZ_PAGE_BLOCK_TEXT) continue;
block = pageb->u.text;
for (line = block->lines;
line < block->lines + block->len;
++line) {
fz_stext_span *span;
rect = fz_empty_rect;
for (span = line->first_span; span; span = span->next) {
int i, j, k;
bbox.x0 = bbox.y0 = bbox.x1 = bbox.y1 = 0;
j = 0;
k = span->len - 1;
if (span == page->fmark.span && span == page->lmark.span) {
seen = 1;
j = fz_mini (first.i, last.i);
k = fz_maxi (first.i, last.i);
}
else {
if (span == first.span) {
seen = 1;
j = first.i;
}
else if (span == last.span) {
seen = 1;
k = last.i;
}
}
if (seen) {
for (i = j; i <= k; ++i) {
fz_rect bbox1;
fz_union_rect (&rect,
fz_stext_char_bbox (state.ctx, &bbox1,
span, i));
}
fz_round_rect (&bbox, &rect);
lprintf ("%d %d %d %d oy=%d ox=%d\n",
bbox.x0,
bbox.y0,
bbox.x1,
bbox.y1,
oy, ox);
recti (bbox.x0 + ox, bbox.y0 + oy,
bbox.x1 + ox, bbox.y1 + oy);
if (span == last.span) {
goto done;
}
rect = fz_empty_rect;
}
}
}
}
done:
glDisable (GL_BLEND);
}
#include "glfont.c"
static void stipplerect (fz_matrix *m,
fz_point *p1,
fz_point *p2,
fz_point *p3,
fz_point *p4,
GLfloat *texcoords,
GLfloat *vertices)
{
fz_transform_point (p1, m);
fz_transform_point (p2, m);
fz_transform_point (p3, m);
fz_transform_point (p4, m);
{
float w, h, s, t;
w = p2->x - p1->x;
h = p2->y - p1->y;
t = sqrtf (w*w + h*h) * .25f;
w = p3->x - p2->x;
h = p3->y - p2->y;
s = sqrtf (w*w + h*h) * .25f;
texcoords[0] = 0; vertices[0] = p1->x; vertices[1] = p1->y;
texcoords[1] = t; vertices[2] = p2->x; vertices[3] = p2->y;
texcoords[2] = 0; vertices[4] = p2->x; vertices[5] = p2->y;
texcoords[3] = s; vertices[6] = p3->x; vertices[7] = p3->y;
texcoords[4] = 0; vertices[8] = p3->x; vertices[9] = p3->y;
texcoords[5] = t; vertices[10] = p4->x; vertices[11] = p4->y;
texcoords[6] = 0; vertices[12] = p4->x; vertices[13] = p4->y;
texcoords[7] = s; vertices[14] = p1->x; vertices[15] = p1->y;
}
glDrawArrays (GL_LINES, 0, 8);
}
static void solidrect (fz_matrix *m,
fz_point *p1,
fz_point *p2,
fz_point *p3,
fz_point *p4,
GLfloat *vertices)
{
fz_transform_point (p1, m);
fz_transform_point (p2, m);
fz_transform_point (p3, m);
fz_transform_point (p4, m);
vertices[0] = p1->x; vertices[1] = p1->y;
vertices[2] = p2->x; vertices[3] = p2->y;
vertices[4] = p3->x; vertices[5] = p3->y;
vertices[6] = p4->x; vertices[7] = p4->y;
glDrawArrays (GL_TRIANGLE_FAN, 0, 4);
}
static void highlightlinks (struct page *page, int xoff, int yoff)
{
int i;
fz_matrix ctm, tm, pm;
fz_link *link, *links;
GLfloat *texcoords = state.texcoords;
GLfloat *vertices = state.vertices;
links = fz_load_links (state.ctx, page->fzpage);
glEnable (GL_TEXTURE_1D);
glEnable (GL_BLEND);
glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glBindTexture (GL_TEXTURE_1D, state.stid);
xoff -= state.pagedims[page->pdimno].bounds.x0;
yoff -= state.pagedims[page->pdimno].bounds.y0;
fz_translate (&tm, xoff, yoff);
pm = pagectm (page);
fz_concat (&ctm, &pm, &tm);
glTexCoordPointer (1, GL_FLOAT, 0, texcoords);
glVertexPointer (2, GL_FLOAT, 0, vertices);
for (link = links; link; link = link->next) {
fz_point p1, p2, p3, p4;
p1.x = link->rect.x0;
p1.y = link->rect.y0;
p2.x = link->rect.x1;
p2.y = link->rect.y0;
p3.x = link->rect.x1;
p3.y = link->rect.y1;
p4.x = link->rect.x0;
p4.y = link->rect.y1;
switch (link->dest.kind) {
case FZ_LINK_GOTO: glColor3ub (255, 0, 0); break;
case FZ_LINK_URI: glColor3ub (0, 0, 255); break;
case FZ_LINK_LAUNCH: glColor3ub (0, 255, 0); break;
default: glColor3ub (0, 0, 0); break;
}
stipplerect (&ctm, &p1, &p2, &p3, &p4, texcoords, vertices);
}
for (i = 0; i < page->annotcount; ++i) {
fz_point p1, p2, p3, p4;
struct annot *annot = &page->annots[i];
p1.x = annot->bbox.x0;
p1.y = annot->bbox.y0;
p2.x = annot->bbox.x1;
p2.y = annot->bbox.y0;
p3.x = annot->bbox.x1;
p3.y = annot->bbox.y1;
p4.x = annot->bbox.x0;
p4.y = annot->bbox.y1;
glColor3ub (0, 0, 128);
stipplerect (&ctm, &p1, &p2, &p3, &p4, texcoords, vertices);
}
glDisable (GL_BLEND);
glDisable (GL_TEXTURE_1D);
}
static int compareslinks (const void *l, const void *r)
{
struct slink const *ls = l;
struct slink const *rs = r;
if (ls->bbox.y0 == rs->bbox.y0) {
return rs->bbox.x0 - rs->bbox.x0;
}
return ls->bbox.y0 - rs->bbox.y0;
}
static void droptext (struct page *page)
{
if (page->text) {
fz_drop_stext_page (state.ctx, page->text);
page->fmark.i = -1;
page->lmark.i = -1;
page->fmark.span = NULL;
page->lmark.span = NULL;
page->text = NULL;
}
if (page->sheet) {
fz_drop_stext_sheet (state.ctx, page->sheet);
page->sheet = NULL;
}
}
static void dropannots (struct page *page)
{
if (page->annots) {
free (page->annots);
page->annots = NULL;
page->annotcount = 0;
}
}
static void ensureannots (struct page *page)
{
int i, count = 0;
size_t annotsize = sizeof (*page->annots);
fz_annot *annot;
if (state.gen != page->agen) {
dropannots (page);
page->agen = state.gen;
}
if (page->annots) return;
for (annot = fz_first_annot (state.ctx, page->fzpage);
annot;
annot = fz_next_annot (state.ctx, annot)) {
count++;
}
if (count > 0) {
page->annotcount = count;
page->annots = calloc (count, annotsize);
if (!page->annots) {
err (1, "calloc annots %d", count);
}
for (annot = fz_first_annot (state.ctx, page->fzpage), i = 0;
annot;
annot = fz_next_annot (state.ctx, annot), i++) {
fz_rect rect;
fz_bound_annot (state.ctx, annot, &rect);
page->annots[i].annot = annot;
fz_round_rect (&page->annots[i].bbox, &rect);
}
}
}
static void dropslinks (struct page *page)
{
if (page->slinks) {
free (page->slinks);
page->slinks = NULL;
page->slinkcount = 0;
}
}
static void ensureslinks (struct page *page)
{
fz_matrix ctm;
int i, count;
size_t slinksize = sizeof (*page->slinks);
fz_link *link, *links;
ensureannots (page);
if (state.gen != page->sgen) {
dropslinks (page);
page->sgen = state.gen;
}
if (page->slinks) return;
links = fz_load_links (state.ctx, page->fzpage);
ctm = pagectm (page);
count = page->annotcount;
for (link = links; link; link = link->next) {
count++;
}
if (count > 0) {
int j;
page->slinkcount = count;
page->slinks = calloc (count, slinksize);
if (!page->slinks) {
err (1, "calloc slinks %d", count);
}
for (i = 0, link = links; link; ++i, link = link->next) {
fz_rect rect;
rect = link->rect;
fz_transform_rect (&rect, &ctm);
page->slinks[i].tag = SLINK;
page->slinks[i].u.link = link;
fz_round_rect (&page->slinks[i].bbox, &rect);
}
for (j = 0; j < page->annotcount; ++j, ++i) {
fz_rect rect;
fz_bound_annot (state.ctx, page->annots[j].annot, &rect);
fz_transform_rect (&rect, &ctm);
fz_round_rect (&page->slinks[i].bbox, &rect);
page->slinks[i].tag = SANNOT;
page->slinks[i].u.annot = page->annots[j].annot;
}
qsort (page->slinks, count, slinksize, compareslinks);
}
}
/* slightly tweaked fmt_ulong by D.J. Bernstein */
static void fmt_linkn (char *s, unsigned int u)
{
unsigned int len; unsigned int q;
unsigned int zma = 'z' - 'a' + 1;
len = 1; q = u;
while (q > zma - 1) { ++len; q /= zma; }
if (s) {
s += len;
do { *--s = 'a' + (u % zma) - (u < zma && len > 1); u /= zma; } while(u);
/* handles u == 0 */
}
s[len] = 0;
}
static void highlightslinks (struct page *page, int xoff, int yoff,
int noff, char *targ, int tlen, int hfsize)
{
int i;
char buf[40];
struct slink *slink;
double x0, y0, x1, y1, w;
ensureslinks (page);
glColor3ub (0xc3, 0xb0, 0x91);
for (i = 0; i < page->slinkcount; ++i) {
fmt_linkn (buf, i + noff);
if (!tlen || !strncmp (targ, buf, tlen)) {
slink = &page->slinks[i];
x0 = slink->bbox.x0 + xoff - 5;
y1 = slink->bbox.y0 + yoff - 5;
y0 = y1 + 10 + hfsize;
w = measure_string (state.face, hfsize, buf);
x1 = x0 + w + 10;
recti (x0, y0, x1, y1);
}
}
glEnable (GL_BLEND);
glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glEnable (GL_TEXTURE_2D);
glColor3ub (0, 0, 0);
for (i = 0; i < page->slinkcount; ++i) {
fmt_linkn (buf, i + noff);
if (!tlen || !strncmp (targ, buf, tlen)) {
slink = &page->slinks[i];
x0 = slink->bbox.x0 + xoff;
y0 = slink->bbox.y0 + yoff + hfsize;
draw_string (state.face, hfsize, x0, y0, buf);
}
}
glDisable (GL_TEXTURE_2D);
glDisable (GL_BLEND);
}
static void uploadslice (struct tile *tile, struct slice *slice)
{
int offset;
struct slice *slice1;
unsigned char *texdata;
offset = 0;
for (slice1 = tile->slices; slice != slice1; slice1++) {
offset += slice1->h * tile->w * tile->pixmap->n;
}
if (slice->texindex != -1 && slice->texindex < state.texcount
&& state.texowners[slice->texindex].slice == slice) {
glBindTexture (TEXT_TYPE, state.texids[slice->texindex]);
}
else {
int subimage = 0;
int texindex = state.texindex++ % state.texcount;
if (state.texowners[texindex].w == tile->w) {
if (state.texowners[texindex].h >= slice->h) {
subimage = 1;
}
else {
state.texowners[texindex].h = slice->h;
}
}
else {
state.texowners[texindex].h = slice->h;
}
state.texowners[texindex].w = tile->w;
state.texowners[texindex].slice = slice;
slice->texindex = texindex;
glBindTexture (TEXT_TYPE, state.texids[texindex]);
#if TEXT_TYPE == GL_TEXTURE_2D
glTexParameteri (TEXT_TYPE, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri (TEXT_TYPE, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri (TEXT_TYPE, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri (TEXT_TYPE, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
#endif
if (tile->pbo) {
state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, tile->pbo->id);
texdata = 0;
}
else {
texdata = tile->pixmap->samples;
}
if (subimage) {
glTexSubImage2D (TEXT_TYPE,
0,
0,
0,
tile->w,
slice->h,
state.texform,
state.texty,
texdata+offset
);
}
else {
glTexImage2D (TEXT_TYPE,
0,
state.texiform,
tile->w,
slice->h,
0,
state.texform,
state.texty,
texdata+offset
);
}
if (tile->pbo) {
state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, 0);
}
}
}
CAMLprim value ml_begintiles (value unit_v)
{
CAMLparam1 (unit_v);
glEnable (TEXT_TYPE);
glTexCoordPointer (2, GL_FLOAT, 0, state.texcoords);
glVertexPointer (2, GL_FLOAT, 0, state.vertices);
CAMLreturn (unit_v);
}
CAMLprim value ml_endtiles (value unit_v)
{
CAMLparam1 (unit_v);
glDisable (TEXT_TYPE);
CAMLreturn (unit_v);
}
CAMLprim value ml_drawtile (value args_v, value ptr_v)
{
CAMLparam2 (args_v, ptr_v);
int dispx = Int_val (Field (args_v, 0));
int dispy = Int_val (Field (args_v, 1));
int dispw = Int_val (Field (args_v, 2));
int disph = Int_val (Field (args_v, 3));
int tilex = Int_val (Field (args_v, 4));
int tiley = Int_val (Field (args_v, 5));
char *s = String_val (ptr_v);
struct tile *tile = parse_pointer (__func__, s);
int slicey, firstslice;
struct slice *slice;
GLfloat *texcoords = state.texcoords;
GLfloat *vertices = state.vertices;
firstslice = tiley / tile->sliceheight;
slice = &tile->slices[firstslice];
slicey = tiley % tile->sliceheight;
while (disph > 0) {
int dh;
dh = slice->h - slicey;
dh = fz_mini (disph, dh);
uploadslice (tile, slice);
texcoords[0] = tilex; texcoords[1] = slicey;
texcoords[2] = tilex+dispw; texcoords[3] = slicey;
texcoords[4] = tilex; texcoords[5] = slicey+dh;
texcoords[6] = tilex+dispw; texcoords[7] = slicey+dh;
vertices[0] = dispx; vertices[1] = dispy;
vertices[2] = dispx+dispw; vertices[3] = dispy;
vertices[4] = dispx; vertices[5] = dispy+dh;
vertices[6] = dispx+dispw; vertices[7] = dispy+dh;
#if TEXT_TYPE == GL_TEXTURE_2D
for (int i = 0; i < 8; ++i) {
texcoords[i] /= ((i & 1) == 0 ? tile->w : slice->h);
}
#endif
glDrawArrays (GL_TRIANGLE_STRIP, 0, 4);
dispy += dh;
disph -= dh;
slice++;
ARSERT (!(slice - tile->slices >= tile->slicecount && disph > 0));
slicey = 0;
}
CAMLreturn (Val_unit);
}
static void drawprect (struct page *page, int xoff, int yoff, value rects_v)
{
fz_matrix ctm, tm, pm;
fz_point p1, p2, p3, p4;
GLfloat *vertices = state.vertices;
double *v = (double *) rects_v;
xoff -= state.pagedims[page->pdimno].bounds.x0;
yoff -= state.pagedims[page->pdimno].bounds.y0;
fz_translate (&tm, xoff, yoff);
pm = pagectm (page);
fz_concat (&ctm, &pm, &tm);
glEnable (GL_BLEND);
glVertexPointer (2, GL_FLOAT, 0, vertices);
glColor4dv (v);
p1.x = v[4];
p1.y = v[5];
p2.x = v[6];
p2.y = v[5];
p3.x = v[6];
p3.y = v[7];
p4.x = v[4];
p4.y = v[7];
solidrect (&ctm, &p1, &p2, &p3, &p4, vertices);
glDisable (GL_BLEND);
}
CAMLprim value ml_postprocess (value ptr_v, value hlinks_v,
value xoff_v, value yoff_v,
value li_v)
{
CAMLparam5 (ptr_v, hlinks_v, xoff_v, yoff_v, li_v);
int xoff = Int_val (xoff_v);
int yoff = Int_val (yoff_v);
int noff = Int_val (Field (li_v, 0));
char *targ = String_val (Field (li_v, 1));
int tlen = caml_string_length (Field (li_v, 1));
int hfsize = Int_val (Field (li_v, 2));
char *s = String_val (ptr_v);
int hlmask = Int_val (hlinks_v);
struct page *page = parse_pointer (__func__, s);
if (!page->fzpage) {
/* deal with loadpage failed pages */
goto done;
}
if (trylock (__func__)) {
noff = -1;
goto done;
}
ensureannots (page);
if (hlmask & 1) highlightlinks (page, xoff, yoff);
if (hlmask & 2) {
highlightslinks (page, xoff, yoff, noff, targ, tlen, hfsize);
noff = page->slinkcount;
}
if (page->tgen == state.gen) {
showsel (page, xoff, yoff);
}
unlock (__func__);
done:
CAMLreturn (Val_int (noff));
}
CAMLprim value ml_drawprect (value ptr_v, value xoff_v, value yoff_v,
value rects_v)
{
CAMLparam4 (ptr_v, xoff_v, yoff_v, rects_v);
int xoff = Int_val (xoff_v);
int yoff = Int_val (yoff_v);
char *s = String_val (ptr_v);
struct page *page = parse_pointer (__func__, s);
drawprect (page, xoff, yoff, rects_v);
CAMLreturn (Val_unit);
}
static struct annot *getannot (struct page *page, int x, int y)
{
int i;
fz_point p;
fz_matrix ctm;
const fz_matrix *tctm;
pdf_document *pdf = pdf_specifics (state.ctx, state.doc);
if (!page->annots) return NULL;
if (pdf) {
trimctm (pdf_page_from_fz_page (state.ctx, page->fzpage), page->pdimno);
tctm = &state.pagedims[page->pdimno].tctm;
}
else {
tctm = &fz_identity;
}
p.x = x;
p.y = y;
fz_concat (&ctm, tctm, &state.pagedims[page->pdimno].ctm);
fz_invert_matrix (&ctm, &ctm);
fz_transform_point (&p, &ctm);
if (pdf) {
for (i = 0; i < page->annotcount; ++i) {
struct annot *a = &page->annots[i];
fz_rect rect;
fz_bound_annot (state.ctx, a->annot, &rect);
if (p.x >= rect.x0 && p.x <= rect.x1) {
if (p.y >= rect.y0 && p.y <= rect.y1)
return a;
}
}
}
return NULL;
}
static fz_link *getlink (struct page *page, int x, int y)
{
fz_point p;
fz_matrix ctm;
fz_link *link, *links;
links = fz_load_links (state.ctx, page->fzpage);
p.x = x;
p.y = y;
ctm = pagectm (page);
fz_invert_matrix (&ctm, &ctm);
fz_transform_point (&p, &ctm);
for (link = links; link; link = link->next) {
if (p.x >= link->rect.x0 && p.x <= link->rect.x1) {
if (p.y >= link->rect.y0 && p.y <= link->rect.y1) {
return link;
}
}
}
return NULL;
}
static void ensuretext (struct page *page)
{
if (state.gen != page->tgen) {
droptext (page);
page->tgen = state.gen;
}
if (!page->text) {
fz_matrix ctm;
fz_device *tdev;
page->text = fz_new_stext_page (state.ctx,
&state.pagedims[page->pdimno].mediabox);
page->sheet = fz_new_stext_sheet (state.ctx);
tdev = fz_new_stext_device (state.ctx, page->sheet, page->text);
ctm = pagectm (page);
fz_run_display_list (state.ctx, page->dlist,
tdev, &ctm, &fz_infinite_rect, NULL);
qsort (page->text->blocks, page->text->len,
sizeof (*page->text->blocks), compareblocks);
fz_close_device (state.ctx, tdev);
fz_drop_device (state.ctx, tdev);
}
}
CAMLprim value ml_find_page_with_links (value start_page_v, value dir_v)
{
CAMLparam2 (start_page_v, dir_v);
CAMLlocal1 (ret_v);
int i, dir = Int_val (dir_v);
int start_page = Int_val (start_page_v);
int end_page = dir > 0 ? state.pagecount : -1;
pdf_document *pdf;
fz_var (end_page);
ret_v = Val_int (0);
lock (__func__);
pdf = pdf_specifics (state.ctx, state.doc);
for (i = start_page + dir; i != end_page; i += dir) {
int found;
fz_var (found);
if (pdf) {
pdf_page *page = NULL;
fz_var (page);
fz_try (state.ctx) {
page = pdf_load_page (state.ctx, pdf, i);
found = !!page->links || !!page->annots;
}
fz_catch (state.ctx) {
found = 0;
}
if (page) {
fz_drop_page (state.ctx, &page->super);
}
}
else {
fz_page *page = fz_load_page (state.ctx, state.doc, i);
found = !!fz_load_links (state.ctx, page);
fz_drop_page (state.ctx, page);
}
if (found) {
ret_v = caml_alloc_small (1, 1);
Field (ret_v, 0) = Val_int (i);
goto unlock;
}
}
unlock:
unlock (__func__);
CAMLreturn (ret_v);
}
enum { dir_first, dir_last };
enum { dir_first_visible, dir_left, dir_right, dir_down, dir_up };
CAMLprim value ml_findlink (value ptr_v, value dir_v)
{
CAMLparam2 (ptr_v, dir_v);
CAMLlocal2 (ret_v, pos_v);
struct page *page;
int dirtag, i, slinkindex;
struct slink *found = NULL ,*slink;
char *s = String_val (ptr_v);
page = parse_pointer (__func__, s);
ret_v = Val_int (0);
lock (__func__);
ensureslinks (page);
if (Is_block (dir_v)) {
dirtag = Tag_val (dir_v);
switch (dirtag) {
case dir_first_visible:
{
int x0, y0, dir, first_index, last_index;
pos_v = Field (dir_v, 0);
x0 = Int_val (Field (pos_v, 0));
y0 = Int_val (Field (pos_v, 1));
dir = Int_val (Field (pos_v, 2));
if (dir >= 0) {
dir = 1;
first_index = 0;
last_index = page->slinkcount;
}
else {
first_index = page->slinkcount - 1;
last_index = -1;
}
for (i = first_index; i != last_index; i += dir) {
slink = &page->slinks[i];
if (slink->bbox.y0 >= y0 && slink->bbox.x0 >= x0) {
found = slink;
break;
}
}
}
break;
case dir_left:
slinkindex = Int_val (Field (dir_v, 0));
found = &page->slinks[slinkindex];
for (i = slinkindex - 1; i >= 0; --i) {
slink = &page->slinks[i];
if (slink->bbox.x0 < found->bbox.x0) {
found = slink;
break;
}
}
break;
case dir_right:
slinkindex = Int_val (Field (dir_v, 0));
found = &page->slinks[slinkindex];
for (i = slinkindex + 1; i < page->slinkcount; ++i) {
slink = &page->slinks[i];
if (slink->bbox.x0 > found->bbox.x0) {
found = slink;
break;
}
}
break;
case dir_down:
slinkindex = Int_val (Field (dir_v, 0));
found = &page->slinks[slinkindex];
for (i = slinkindex + 1; i < page->slinkcount; ++i) {
slink = &page->slinks[i];
if (slink->bbox.y0 >= found->bbox.y0) {
found = slink;
break;
}
}
break;
case dir_up:
slinkindex = Int_val (Field (dir_v, 0));
found = &page->slinks[slinkindex];
for (i = slinkindex - 1; i >= 0; --i) {
slink = &page->slinks[i];
if (slink->bbox.y0 <= found->bbox.y0) {
found = slink;
break;
}
}
break;
}
}
else {
dirtag = Int_val (dir_v);
switch (dirtag) {
case dir_first:
found = page->slinks;
break;
case dir_last:
if (page->slinks) {
found = page->slinks + (page->slinkcount - 1);
}
break;
}
}
if (found) {
ret_v = caml_alloc_small (2, 1);
Field (ret_v, 0) = Val_int (found - page->slinks);
}
unlock (__func__);
CAMLreturn (ret_v);
}
enum { uuri, ugoto, utext, uunexpected, ulaunch,
unamed, uremote, uremotedest, uannot };
#define LINKTOVAL \
{ \
int pageno; \
\
switch (link->dest.kind) { \
case FZ_LINK_GOTO: \
{ \
fz_point p; \
\
pageno = link->dest.ld.gotor.page; \
p.x = 0; \
p.y = 0; \
\
if (link->dest.ld.gotor.flags & fz_link_flag_t_valid) { \
p.y = link->dest.ld.gotor.lt.y; \
fz_transform_point (&p, &pdim->lctm); \
if (p.y < 0) p.y = 0; \
} \
tup_v = caml_alloc_tuple (2); \
ret_v = caml_alloc_small (1, ugoto); \
Field (tup_v, 0) = Val_int (pageno); \
Field (tup_v, 1) = Val_int (p.y); \
Field (ret_v, 0) = tup_v; \
} \
break; \
\
case FZ_LINK_URI: \
str_v = caml_copy_string (link->dest.ld.uri.uri); \
ret_v = caml_alloc_small (1, uuri); \
Field (ret_v, 0) = str_v; \
break; \
\
case FZ_LINK_LAUNCH: \
str_v = caml_copy_string (link->dest.ld.launch.file_spec); \
ret_v = caml_alloc_small (1, ulaunch); \
Field (ret_v, 0) = str_v; \
break; \
\
case FZ_LINK_NAMED: \
str_v = caml_copy_string (link->dest.ld.named.named); \
ret_v = caml_alloc_small (1, unamed); \
Field (ret_v, 0) = str_v; \
break; \
\
case FZ_LINK_GOTOR: \
{ \
int rty; \
\
str_v = caml_copy_string (link->dest.ld.gotor.file_spec); \
pageno = link->dest.ld.gotor.page; \
if (pageno == -1) { \
gr_v = caml_copy_string (link->dest.ld.gotor.dest); \
rty = uremotedest; \
} \
else { \
gr_v = Val_int (pageno); \
rty = uremote; \
} \
tup_v = caml_alloc_tuple (2); \
ret_v = caml_alloc_small (1, rty); \
Field (tup_v, 0) = str_v; \
Field (tup_v, 1) = gr_v; \
Field (ret_v, 0) = tup_v; \
} \
break; \
\
default: \
{ \
char buf[80]; \
\
snprintf (buf, sizeof (buf), \
"unhandled link kind %d", link->dest.kind); \
str_v = caml_copy_string (buf); \
ret_v = caml_alloc_small (1, uunexpected); \
Field (ret_v, 0) = str_v; \
} \
break; \
} \
}
CAMLprim value ml_getlink (value ptr_v, value n_v)
{
CAMLparam2 (ptr_v, n_v);
CAMLlocal4 (ret_v, tup_v, str_v, gr_v);
fz_link *link;
struct page *page;
struct pagedim *pdim;
char *s = String_val (ptr_v);
struct slink *slink;
ret_v = Val_int (0);
page = parse_pointer (__func__, s);
lock (__func__);
ensureslinks (page);
pdim = &state.pagedims[page->pdimno];
slink = &page->slinks[Int_val (n_v)];
if (slink->tag == SLINK) {
link = slink->u.link;
LINKTOVAL;
}
else {
ret_v = caml_alloc_small (1, uannot);
tup_v = caml_alloc_tuple (2);
Field (ret_v, 0) = tup_v;
Field (tup_v, 0) = ptr_v;
Field (tup_v, 1) = n_v;
}
unlock (__func__);
CAMLreturn (ret_v);
}
CAMLprim value ml_getannotcontents (value ptr_v, value n_v)
{
CAMLparam2 (ptr_v, n_v);
pdf_document *pdf;
const char *contents = "";
lock (__func__);
pdf = pdf_specifics (state.ctx, state.doc);
if (pdf) {
char *s = String_val (ptr_v);
struct page *page;
struct slink *slink;
page = parse_pointer (__func__, s);
slink = &page->slinks[Int_val (n_v)];
contents = pdf_annot_contents (state.ctx,
(pdf_annot *) slink->u.annot);
}
unlock (__func__);
CAMLreturn (caml_copy_string (contents));
}
CAMLprim value ml_getlinkcount (value ptr_v)
{
CAMLparam1 (ptr_v);
struct page *page;
char *s = String_val (ptr_v);
page = parse_pointer (__func__, s);
CAMLreturn (Val_int (page->slinkcount));
}
CAMLprim value ml_getlinkrect (value ptr_v, value n_v)
{
CAMLparam2 (ptr_v, n_v);
CAMLlocal1 (ret_v);
struct page *page;
struct slink *slink;
char *s = String_val (ptr_v);
page = parse_pointer (__func__, s);
ret_v = caml_alloc_tuple (4);
lock (__func__);
ensureslinks (page);
slink = &page->slinks[Int_val (n_v)];
Field (ret_v, 0) = Val_int (slink->bbox.x0);
Field (ret_v, 1) = Val_int (slink->bbox.y0);
Field (ret_v, 2) = Val_int (slink->bbox.x1);
Field (ret_v, 3) = Val_int (slink->bbox.y1);
unlock (__func__);
CAMLreturn (ret_v);
}
CAMLprim value ml_whatsunder (value ptr_v, value x_v, value y_v)
{
CAMLparam3 (ptr_v, x_v, y_v);
CAMLlocal4 (ret_v, tup_v, str_v, gr_v);
fz_link *link;
struct annot *annot;
struct page *page;
char *ptr = String_val (ptr_v);
int x = Int_val (x_v), y = Int_val (y_v);
struct pagedim *pdim;
ret_v = Val_int (0);
if (trylock (__func__)) {
goto done;
}
page = parse_pointer (__func__, ptr);
pdim = &state.pagedims[page->pdimno];
x += pdim->bounds.x0;
y += pdim->bounds.y0;
{
annot = getannot (page, x, y);
if (annot) {
int i, n = -1;
ensureslinks (page);
for (i = 0; i < page->slinkcount; ++i) {
if (page->slinks[i].tag == SANNOT
&& page->slinks[i].u.annot == annot->annot) {
n = i;
break;
}
}
ret_v = caml_alloc_small (1, uannot);
tup_v = caml_alloc_tuple (2);
Field (ret_v, 0) = tup_v;
Field (tup_v, 0) = ptr_v;
Field (tup_v, 1) = Val_int (n);
goto unlock;
}
}
link = getlink (page, x, y);
if (link) {
LINKTOVAL;
}
else {
fz_rect *b;
fz_page_block *pageb;
fz_stext_block *block;
ensuretext (page);
for (pageb = page->text->blocks;
pageb < page->text->blocks + page->text->len;
++pageb) {
fz_stext_line *line;
if (pageb->type != FZ_PAGE_BLOCK_TEXT) continue;
block = pageb->u.text;
b = &block->bbox;
if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
continue;
for (line = block->lines;
line < block->lines + block->len;
++line) {
fz_stext_span *span;
b = &line->bbox;
if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
continue;
for (span = line->first_span; span; span = span->next) {
int charnum;
b = &span->bbox;
if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
continue;
for (charnum = 0; charnum < span->len; ++charnum) {
fz_rect bbox;
fz_stext_char_bbox (state.ctx, &bbox, span, charnum);
b = &bbox;
if (x >= b->x0 && x <= b->x1
&& y >= b->y0 && y <= b->y1) {
fz_stext_style *style = span->text->style;
const char *n2 =
style->font
? style->font->name
: "Span has no font name"
;
FT_FaceRec *face = style->font->ft_face;
if (face && face->family_name) {
char *s;
char *n1 = face->family_name;
size_t l1 = strlen (n1);
size_t l2 = strlen (n2);
if (l1 != l2 || memcmp (n1, n2, l1)) {
s = malloc (l1 + l2 + 2);
if (s) {
memcpy (s, n2, l2);
s[l2] = '=';
memcpy (s + l2 + 1, n1, l1 + 1);
str_v = caml_copy_string (s);
free (s);
}
}
}
if (str_v == Val_unit) {
str_v = caml_copy_string (n2);
}
ret_v = caml_alloc_small (1, utext);
Field (ret_v, 0) = str_v;
goto unlock;
}
}
}
}
}
}
unlock:
unlock (__func__);
done:
CAMLreturn (ret_v);
}
enum { mark_page, mark_block, mark_line, mark_word };
static int uninteresting (int c)
{
return c == ' ' || c == '\n' || c == '\t' || c == '\n' || c == '\r'
|| ispunct (c);
}
CAMLprim value ml_clearmark (value ptr_v)
{
CAMLparam1 (ptr_v);
char *s = String_val (ptr_v);
struct page *page;
if (trylock (__func__)) {
goto done;
}
page = parse_pointer (__func__, s);
page->fmark.span = NULL;
page->lmark.span = NULL;
page->fmark.i = 0;
page->lmark.i = 0;
unlock (__func__);
done:
CAMLreturn (Val_unit);
}
CAMLprim value ml_markunder (value ptr_v, value x_v, value y_v, value mark_v)
{
CAMLparam4 (ptr_v, x_v, y_v, mark_v);
CAMLlocal1 (ret_v);
fz_rect *b;
struct page *page;
fz_stext_line *line;
fz_page_block *pageb;
fz_stext_block *block;
struct pagedim *pdim;
int mark = Int_val (mark_v);
char *s = String_val (ptr_v);
int x = Int_val (x_v), y = Int_val (y_v);
ret_v = Val_bool (0);
if (trylock (__func__)) {
goto done;
}
page = parse_pointer (__func__, s);
pdim = &state.pagedims[page->pdimno];
ensuretext (page);
if (mark == mark_page) {
int i;
fz_page_block *pb1 = NULL, *pb2 = NULL;
for (i = 0; i < page->text->len; ++i) {
if (page->text->blocks[i].type == FZ_PAGE_BLOCK_TEXT) {
pb1 = &page->text->blocks[i];
break;
}
}
if (!pb1) goto unlock;
for (i = page->text->len - 1; i >= 0; --i) {
if (page->text->blocks[i].type == FZ_PAGE_BLOCK_TEXT) {
pb2 = &page->text->blocks[i];
break;
}
}
if (!pb2) goto unlock;
block = pb1->u.text;
page->fmark.i = 0;
page->fmark.span = block->lines->first_span;
block = pb2->u.text;
line = &block->lines[block->len - 1];
page->lmark.i = line->last_span->len - 1;
page->lmark.span = line->last_span;
ret_v = Val_bool (1);
goto unlock;
}
x += pdim->bounds.x0;
y += pdim->bounds.y0;
for (pageb = page->text->blocks;
pageb < page->text->blocks + page->text->len;
++pageb) {
if (pageb->type != FZ_PAGE_BLOCK_TEXT) continue;
block = pageb->u.text;
b = &block->bbox;
if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
continue;
if (mark == mark_block) {
page->fmark.i = 0;
page->fmark.span = block->lines->first_span;
line = &block->lines[block->len - 1];
page->lmark.i = line->last_span->len - 1;
page->lmark.span = line->last_span;
ret_v = Val_bool (1);
goto unlock;
}
for (line = block->lines;
line < block->lines + block->len;
++line) {
fz_stext_span *span;
b = &line->bbox;
if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
continue;
if (mark == mark_line) {
page->fmark.i = 0;
page->fmark.span = line->first_span;
page->lmark.i = line->last_span->len - 1;
page->lmark.span = line->last_span;
ret_v = Val_bool (1);
goto unlock;
}
for (span = line->first_span; span; span = span->next) {
int charnum;
b = &span->bbox;
if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
continue;
for (charnum = 0; charnum < span->len; ++charnum) {
fz_rect bbox;
fz_stext_char_bbox (state.ctx, &bbox, span, charnum);
b = &bbox;
if (x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1) {
/* unicode ftw */
int charnum2, charnum3 = -1, charnum4 = -1;
if (uninteresting (span->text[charnum].c)) goto unlock;
for (charnum2 = charnum; charnum2 >= 0; --charnum2) {
if (uninteresting (span->text[charnum2].c)) {
charnum3 = charnum2 + 1;
break;
}
}
if (charnum3 == -1) charnum3 = 0;
charnum4 = charnum;
for (charnum2 = charnum + 1;
charnum2 < span->len;
++charnum2) {
if (uninteresting (span->text[charnum2].c)) break;
charnum4 = charnum2;
}
page->fmark.i = charnum3;
page->fmark.span = span;
page->lmark.i = charnum4;
page->lmark.span = span;
ret_v = Val_bool (1);
goto unlock;
}
}
}
}
}
unlock:
if (!Bool_val (ret_v)) {
page->fmark.span = NULL;
page->lmark.span = NULL;
page->fmark.i = 0;
page->lmark.i = 0;
}
unlock (__func__);
done:
CAMLreturn (ret_v);
}
CAMLprim value ml_rectofblock (value ptr_v, value x_v, value y_v)
{
CAMLparam3 (ptr_v, x_v, y_v);
CAMLlocal2 (ret_v, res_v);
fz_rect *b = NULL;
struct page *page;
fz_page_block *pageb;
struct pagedim *pdim;
char *s = String_val (ptr_v);
int x = Int_val (x_v), y = Int_val (y_v);
ret_v = Val_int (0);
if (trylock (__func__)) {
goto done;
}
page = parse_pointer (__func__, s);
pdim = &state.pagedims[page->pdimno];
x += pdim->bounds.x0;
y += pdim->bounds.y0;
ensuretext (page);
for (pageb = page->text->blocks;
pageb < page->text->blocks + page->text->len;
++pageb) {
switch (pageb->type) {
case FZ_PAGE_BLOCK_TEXT:
b = &pageb->u.text->bbox;
break;
case FZ_PAGE_BLOCK_IMAGE:
b = &pageb->u.image->bbox;
break;
default:
continue;
}
if (x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1)
break;
b = NULL;
}
if (b) {
res_v = caml_alloc_small (4 * Double_wosize, Double_array_tag);
ret_v = caml_alloc_small (1, 1);
Store_double_field (res_v, 0, b->x0);
Store_double_field (res_v, 1, b->x1);
Store_double_field (res_v, 2, b->y0);
Store_double_field (res_v, 3, b->y1);
Field (ret_v, 0) = res_v;
}
unlock (__func__);
done:
CAMLreturn (ret_v);
}
CAMLprim value ml_seltext (value ptr_v, value rect_v)
{
CAMLparam2 (ptr_v, rect_v);
fz_rect b;
struct page *page;
struct pagedim *pdim;
char *s = String_val (ptr_v);
int i, x0, x1, y0, y1, fi, li;
fz_stext_line *line;
fz_page_block *pageb;
fz_stext_block *block;
fz_stext_span *span, *fspan, *lspan;
if (trylock (__func__)) {
goto done;
}
page = parse_pointer (__func__, s);
ensuretext (page);
pdim = &state.pagedims[page->pdimno];
x0 = Int_val (Field (rect_v, 0)) + pdim->bounds.x0;
y0 = Int_val (Field (rect_v, 1)) + pdim->bounds.y0;
x1 = Int_val (Field (rect_v, 2)) + pdim->bounds.x0;
y1 = Int_val (Field (rect_v, 3)) + pdim->bounds.y0;
if (y0 > y1) {
int t = y0;
y0 = y1;
y1 = t;
x0 = x1;
x1 = t;
}
fi = page->fmark.i;
fspan = page->fmark.span;
li = page->lmark.i;
lspan = page->lmark.span;
for (pageb = page->text->blocks;
pageb < page->text->blocks + page->text->len;
++pageb) {
if (pageb->type != FZ_PAGE_BLOCK_TEXT) continue;
block = pageb->u.text;
for (line = block->lines;
line < block->lines + block->len;
++line) {
for (span = line->first_span; span; span = span->next) {
for (i = 0; i < span->len; ++i) {
fz_stext_char_bbox (state.ctx, &b, span, i);
if (x0 >= b.x0 && x0 <= b.x1
&& y0 >= b.y0 && y0 <= b.y1) {
fspan = span;
fi = i;
}
if (x1 >= b.x0 && x1 <= b.x1
&& y1 >= b.y0 && y1 <= b.y1) {
lspan = span;
li = i;
}
}
}
}
}
if (x1 < x0 && fspan == lspan) {
i = fi;
span = fspan;
fi = li;
fspan = lspan;
li = i;
lspan = span;
}
page->fmark.i = fi;
page->fmark.span = fspan;
page->lmark.i = li;
page->lmark.span = lspan;
unlock (__func__);
done:
CAMLreturn (Val_unit);
}
static int UNUSED_ATTR pipespan (FILE *f, fz_stext_span *span, int a, int b)
{
char buf[4];
int i, len, ret;
for (i = a; i <= b; ++i) {
len = fz_runetochar (buf, span->text[i].c);
ret = fwrite (buf, len, 1, f);
if (ret != 1) {
fprintf (stderr, "failed to write %d bytes ret=%d: %s\n",
len, ret, strerror (errno));
return -1;
}
}
return 0;
}
#ifdef __CYGWIN__
CAMLprim value ml_spawn (value UNUSED_ATTR u1, value UNUSED_ATTR u2)
{
caml_failwith ("ml_popen not implemented under Cygwin");
}
#else
CAMLprim value ml_spawn (value command_v, value fds_v)
{
CAMLparam2 (command_v, fds_v);
CAMLlocal2 (l_v, tup_v);
int ret, ret1;
pid_t pid;
char *msg = NULL;
value earg_v = Nothing;
posix_spawnattr_t attr;
posix_spawn_file_actions_t fa;
char *argv[] = { "/bin/sh", "-c", NULL, NULL };
argv[2] = String_val (command_v);
if ((ret = posix_spawn_file_actions_init (&fa)) != 0) {
unix_error (ret, "posix_spawn_file_actions_init", Nothing);
}
if ((ret = posix_spawnattr_init (&attr)) != 0) {
msg = "posix_spawnattr_init";
goto fail1;
}
#ifdef POSIX_SPAWN_USEVFORK
if ((ret = posix_spawnattr_setflags (&attr, POSIX_SPAWN_USEVFORK)) != 0) {
msg = "posix_spawnattr_setflags POSIX_SPAWN_USEVFORK";
goto fail;
}
#endif
for (l_v = fds_v; l_v != Val_int (0); l_v = Field (l_v, 1)) {
int fd1, fd2;
tup_v = Field (l_v, 0);
fd1 = Int_val (Field (tup_v, 0));
fd2 = Int_val (Field (tup_v, 1));
if (fd2 < 0) {
if ((ret = posix_spawn_file_actions_addclose (&fa, fd1)) != 0) {
msg = "posix_spawn_file_actions_addclose";
earg_v = tup_v;
goto fail;
}
}
else {
if ((ret = posix_spawn_file_actions_adddup2 (&fa, fd1, fd2)) != 0) {
msg = "posix_spawn_file_actions_adddup2";
earg_v = tup_v;
goto fail;
}
}
}
if ((ret = posix_spawn (&pid, "/bin/sh", &fa, &attr, argv, environ))) {
msg = "posix_spawn";
goto fail;
}
fail:
if ((ret1 = posix_spawnattr_destroy (&attr)) != 0) {
fprintf (stderr, "posix_spawnattr_destroy: %s\n", strerror (ret1));
}
fail1:
if ((ret1 = posix_spawn_file_actions_destroy (&fa)) != 0) {
fprintf (stderr, "posix_spawn_file_actions_destroy: %s\n",
strerror (ret1));
}
if (msg)
unix_error (ret, msg, earg_v);
CAMLreturn (Val_int (pid));
}
#endif
CAMLprim value ml_hassel (value ptr_v)
{
CAMLparam1 (ptr_v);
CAMLlocal1 (ret_v);
struct page *page;
char *s = String_val (ptr_v);
ret_v = Val_bool (0);
if (trylock (__func__)) {
goto done;
}
page = parse_pointer (__func__, s);
ret_v = Val_bool (page->fmark.span && page->lmark.span);
unlock (__func__);
done:
CAMLreturn (ret_v);
}
CAMLprim value ml_copysel (value fd_v, value ptr_v)
{
CAMLparam2 (fd_v, ptr_v);
FILE *f;
int seen = 0;
struct page *page;
fz_stext_line *line;
fz_page_block *pageb;
fz_stext_block *block;
int fd = Int_val (fd_v);
char *s = String_val (ptr_v);
if (trylock (__func__)) {
goto done;
}
page = parse_pointer (__func__, s);
if (!page->fmark.span || !page->lmark.span) {
fprintf (stderr, "nothing to copy on page %d\n", page->pageno);
goto unlock;
}
f = fdopen (fd, "w");
if (!f) {
fprintf (stderr, "failed to fdopen sel pipe (from fd %d): %s\n",
fd, strerror (errno));
f = stdout;
}
for (pageb = page->text->blocks;
pageb < page->text->blocks + page->text->len;
++pageb) {
if (pageb->type != FZ_PAGE_BLOCK_TEXT) continue;
block = pageb->u.text;
for (line = block->lines;
line < block->lines + block->len;
++line) {
fz_stext_span *span;
for (span = line->first_span; span; span = span->next) {
int a, b;
seen |= span == page->fmark.span || span == page->lmark.span;
a = span == page->fmark.span ? page->fmark.i : 0;
b = span == page->lmark.span ? page->lmark.i : span->len - 1;
if (seen) {
if (pipespan (f, span, a, b)) {
goto close;
}
if (span == page->lmark.span) {
goto close;
}
if (span == line->last_span) {
if (putc ('\n', f) == EOF) {
fprintf (stderr,
"failed break line on sel pipe: %s\n",
strerror (errno));
goto close;
}
}
}
}
}
}
close:
if (f != stdout) {
int ret = fclose (f);
fd = -1;
if (ret == -1) {
if (errno != ECHILD) {
fprintf (stderr, "failed to close sel pipe: %s\n",
strerror (errno));
}
}
}
unlock:
unlock (__func__);
done:
if (fd >= 0) {
if (close (fd)) {
fprintf (stderr, "failed to close sel pipe: %s\n",
strerror (errno));
}
}
CAMLreturn (Val_unit);
}
CAMLprim value ml_getpdimrect (value pagedimno_v)
{
CAMLparam1 (pagedimno_v);
CAMLlocal1 (ret_v);
int pagedimno = Int_val (pagedimno_v);
fz_rect box;
ret_v = caml_alloc_small (4 * Double_wosize, Double_array_tag);
if (trylock (__func__)) {
box = fz_empty_rect;
}
else {
box = state.pagedims[pagedimno].mediabox;
unlock (__func__);
}
Store_double_field (ret_v, 0, box.x0);
Store_double_field (ret_v, 1, box.x1);
Store_double_field (ret_v, 2, box.y0);
Store_double_field (ret_v, 3, box.y1);
CAMLreturn (ret_v);
}
CAMLprim value ml_zoom_for_height (value winw_v, value winh_v,
value dw_v, value cols_v)
{
CAMLparam4 (winw_v, winh_v, dw_v, cols_v);
CAMLlocal1 (ret_v);
int i;
double zoom = -1.;
double maxh = 0.0;
struct pagedim *p;
double winw = Int_val (winw_v);
double winh = Int_val (winh_v);
double dw = Int_val (dw_v);
double cols = Int_val (cols_v);
double pw = 1.0, ph = 1.0;
if (trylock (__func__)) {
goto done;
}
for (i = 0, p = state.pagedims; i < state.pagedimcount; ++i, ++p) {
double w = p->pagebox.x1 / cols;
double h = p->pagebox.y1;
if (h > maxh) {
maxh = h;
ph = h;
if (state.fitmodel != FitProportional) pw = w;
}
if ((state.fitmodel == FitProportional) && w > pw) pw = w;
}
zoom = (((winh / ph) * pw) + dw) / winw;
unlock (__func__);
done:
ret_v = caml_copy_double (zoom);
CAMLreturn (ret_v);
}
CAMLprim value ml_getmaxw (value unit_v)
{
CAMLparam1 (unit_v);
CAMLlocal1 (ret_v);
int i;
double maxw = -1.;
struct pagedim *p;
if (trylock (__func__)) {
goto done;
}
for (i = 0, p = state.pagedims; i < state.pagedimcount; ++i, ++p) {
double w = p->pagebox.x1;
maxw = fz_max (maxw, w);
}
unlock (__func__);
done:
ret_v = caml_copy_double (maxw);
CAMLreturn (ret_v);
}
CAMLprim value ml_draw_string (value pt_v, value x_v, value y_v, value string_v)
{
CAMLparam4 (pt_v, x_v, y_v, string_v);
CAMLlocal1 (ret_v);
int pt = Int_val(pt_v);
int x = Int_val (x_v);
int y = Int_val (y_v);
double w;
w = draw_string (state.face, pt, x, y, String_val (string_v));
ret_v = caml_copy_double (w);
CAMLreturn (ret_v);
}
CAMLprim value ml_measure_string (value pt_v, value string_v)
{
CAMLparam2 (pt_v, string_v);
CAMLlocal1 (ret_v);
int pt = Int_val (pt_v);
double w;
w = measure_string (state.face, pt, String_val (string_v));
ret_v = caml_copy_double (w);
CAMLreturn (ret_v);
}
CAMLprim value ml_getpagebox (value opaque_v)
{
CAMLparam1 (opaque_v);
CAMLlocal1 (ret_v);
fz_rect rect;
fz_irect bbox;
fz_matrix ctm;
fz_device *dev;
char *s = String_val (opaque_v);
struct page *page = parse_pointer (__func__, s);
ret_v = caml_alloc_tuple (4);
dev = fz_new_bbox_device (state.ctx, &rect);
dev->hints |= FZ_IGNORE_SHADE;
ctm = pagectm (page);
fz_run_page (state.ctx, page->fzpage, dev, &ctm, NULL);
fz_close_device (state.ctx, dev);
fz_drop_device (state.ctx, dev);
fz_round_rect (&bbox, &rect);
Field (ret_v, 0) = Val_int (bbox.x0);
Field (ret_v, 1) = Val_int (bbox.y0);
Field (ret_v, 2) = Val_int (bbox.x1);
Field (ret_v, 3) = Val_int (bbox.y1);
CAMLreturn (ret_v);
}
CAMLprim value ml_setaalevel (value level_v)
{
CAMLparam1 (level_v);
state.aalevel = Int_val (level_v);
CAMLreturn (Val_unit);
}
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wvariadic-macros"
#ifndef __COCOA__
#include <X11/Xlib.h>
#include <X11/cursorfont.h>
#pragma GCC diagnostic pop
#ifdef USE_EGL
#include <EGL/egl.h>
#else
#include <GL/glx.h>
#endif
static const int shapes[] = {
XC_left_ptr, XC_hand2, XC_exchange, XC_fleur, XC_xterm
};
#define CURS_COUNT (sizeof (shapes) / sizeof (shapes[0]))
static struct {
Window wid;
Display *dpy;
#ifdef USE_EGL
EGLContext ctx;
EGLConfig conf;
EGLSurface win;
EGLDisplay *edpy;
#else
GLXContext ctx;
#endif
XVisualInfo *visual;
Cursor curs[CURS_COUNT];
} glx;
#ifdef VISAVIS
static VisualID initvisual (void)
{
/* On this system with: `Haswell-ULT Integrated Graphics
Controller' and Mesa 11.0.6; perf stat reports [1] that when
using glX chosen visual and auto scrolling some document in
fullscreen the power/energy-gpu is more than 1 joule bigger
than when using hand picked visual that stands alone in glxinfo
output: it's dead last in the list and it's the only one with
`visual dep' (sic) of 32
No clue what's going on here...
[1] perf stat -a -I 1200 -e "power/energy-gpu/"
*/
XVisualInfo info;
int ret = 1;
info.depth = 32;
info.class = TrueColor;
glx.visual = XGetVisualInfo (glx.dpy, VisualDepthMask | VisualClassMask,
&info, &ret);
if (!ret || !glx.visual) {
XCloseDisplay (glx.dpy);
caml_failwith ("XGetVisualInfo");
}
return glx.visual->visualid;
}
#endif
static void initcurs (void)
{
for (size_t n = 0; n < CURS_COUNT; ++n) {
glx.curs[n] = XCreateFontCursor (glx.dpy, shapes[n]);
}
}
CAMLprim void ml_setbgcol (value color_v)
{
CAMLparam1 (color_v);
XSetWindowBackground (glx.dpy, glx.wid, Int_val (color_v));
CAMLreturn0;
}
#ifdef USE_EGL
CAMLprim value ml_glxinit (value display_v, value wid_v, value screen_v)
{
CAMLparam3 (display_v, wid_v, screen_v);
int major, minor;
int num_conf;
EGLint visid;
EGLint attribs[] = {
#ifdef VISAVIS
EGL_NATIVE_VISUAL_ID, 0,
#else
EGL_DEPTH_SIZE, 24,
#endif
EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
EGL_RENDERABLE_TYPE, EGL_OPENGL_BIT,
EGL_NONE
};
EGLConfig conf;
glx.dpy = XOpenDisplay (String_val (display_v));
if (!glx.dpy) {
caml_failwith ("XOpenDisplay");
}
eglBindAPI (EGL_OPENGL_API);
glx.edpy = eglGetDisplay (glx.dpy);
if (glx.edpy == EGL_NO_DISPLAY) {
caml_failwith ("eglGetDisplay");
}
if (!eglInitialize (glx.edpy, &major, &minor)) {
caml_failwith ("eglInitialize");
}
#ifdef VISAVIS
attribs[1] = visid = initvisual ();
#endif
if (!eglChooseConfig (glx.edpy, attribs, &conf, 1, &num_conf) ||
!num_conf) {
caml_failwith ("eglChooseConfig");
}
glx.conf = conf;
#ifndef VISAVIS
if (!eglGetConfigAttrib (glx.edpy, glx.conf,
EGL_NATIVE_VISUAL_ID, &visid)) {
caml_failwith ("eglGetConfigAttrib");
}
#endif
initcurs ();
glx.wid = Int_val (wid_v);
CAMLreturn (Val_int (visid));
}
CAMLprim value ml_glxcompleteinit (value unit_v)
{
CAMLparam1 (unit_v);
glx.ctx = eglCreateContext (glx.edpy, glx.conf, EGL_NO_CONTEXT, NULL);
if (!glx.ctx) {
caml_failwith ("eglCreateContext");
}
glx.win = eglCreateWindowSurface (glx.edpy, glx.conf,
glx.wid, NULL);
if (glx.win == EGL_NO_SURFACE) {
caml_failwith ("eglCreateWindowSurface");
}
XFree (glx.visual);
if (!eglMakeCurrent (glx.edpy, glx.win, glx.win, glx.ctx)) {
glx.ctx = NULL;
caml_failwith ("eglMakeCurrent");
}
CAMLreturn (Val_unit);
}
#else
CAMLprim value ml_glxinit (value display_v, value wid_v, value screen_v)
{
CAMLparam3 (display_v, wid_v, screen_v);
glx.dpy = XOpenDisplay (String_val (display_v));
if (!glx.dpy) {
caml_failwith ("XOpenDisplay");
}
#ifdef VISAVIS
initvisual ();
#else
int attribs[] = { GLX_RGBA, GLX_DOUBLEBUFFER, None };
glx.visual = glXChooseVisual (glx.dpy, Int_val (screen_v), attribs);
if (!glx.visual) {
XCloseDisplay (glx.dpy);
caml_failwith ("glXChooseVisual");
}
#endif
initcurs ();
glx.wid = Int_val (wid_v);
CAMLreturn (Val_int (glx.visual->visualid));
}
CAMLprim value ml_glxcompleteinit (value unit_v)
{
CAMLparam1 (unit_v);
glx.ctx = glXCreateContext (glx.dpy, glx.visual, NULL, True);
if (!glx.ctx) {
caml_failwith ("glXCreateContext");
}
XFree (glx.visual);
glx.visual = NULL;
if (!glXMakeCurrent (glx.dpy, glx.wid, glx.ctx)) {
glXDestroyContext (glx.dpy, glx.ctx);
glx.ctx = NULL;
caml_failwith ("glXMakeCurrent");
}
CAMLreturn (Val_unit);
}
#endif
CAMLprim value ml_setcursor (value cursor_v)
{
CAMLparam1 (cursor_v);
size_t cursn = Int_val (cursor_v);
if (cursn >= CURS_COUNT) caml_failwith ("cursor index out of range");
XDefineCursor (glx.dpy, glx.wid, glx.curs[cursn]);
XFlush (glx.dpy);
CAMLreturn (Val_unit);
}
CAMLprim value ml_swapb (value unit_v)
{
CAMLparam1 (unit_v);
#ifdef USE_EGL
if (!eglSwapBuffers (glx.edpy, glx.win)) {
caml_failwith ("eglSwapBuffers");
}
#else
glXSwapBuffers (glx.dpy, glx.wid);
#endif
CAMLreturn (Val_unit);
}
#include "keysym2ucs.c"
CAMLprim value ml_keysymtoutf8 (value keysym_v)
{
CAMLparam1 (keysym_v);
CAMLlocal1 (str_v);
KeySym keysym = Int_val (keysym_v);
Rune rune;
int len;
char buf[5];
rune = keysym2ucs (keysym);
len = fz_runetochar (buf, rune);
buf[len] = 0;
str_v = caml_copy_string (buf);
CAMLreturn (str_v);
}
#else
CAMLprim value ml_keysymtoutf8 (value keysym_v)
{
CAMLparam1 (keysym_v);
CAMLlocal1 (str_v);
long ucs_v = Long_val (keysym_v);
int len;
char buf[5];
len = fz_runetochar (buf, ucs_v);
buf[len] = 0;
str_v = caml_copy_string (buf);
CAMLreturn (str_v);
}
#endif
enum { piunknown, pilinux, piosx, pisun, pibsd, picygwin };
CAMLprim value ml_platform (value unit_v)
{
CAMLparam1 (unit_v);
CAMLlocal2 (tup_v, arr_v);
int platid = piunknown;
struct utsname buf;
#if defined __linux__
platid = pilinux;
#elif defined __CYGWIN__
platid = picygwin;
#elif defined __DragonFly__ || defined __FreeBSD__
|| defined __OpenBSD__ || defined __NetBSD__
platid = pibsd;
#elif defined __sun__
platid = pisun;
#elif defined __APPLE__
platid = piosx;
#endif
if (uname (&buf)) err (1, "uname");
tup_v = caml_alloc_tuple (2);
{
char const *sar[] = {
buf.sysname,
buf.release,
buf.version,
buf.machine,
NULL
};
arr_v = caml_copy_string_array (sar);
}
Field (tup_v, 0) = Val_int (platid);
Field (tup_v, 1) = arr_v;
CAMLreturn (tup_v);
}
CAMLprim value ml_cloexec (value fd_v)
{
CAMLparam1 (fd_v);
int fd = Int_val (fd_v);
if (fcntl (fd, F_SETFD, FD_CLOEXEC, 1)) {
uerror ("fcntl", Nothing);
}
CAMLreturn (Val_unit);
}
CAMLprim value ml_getpbo (value w_v, value h_v, value cs_v)
{
CAMLparam2 (w_v, h_v);
CAMLlocal1 (ret_v);
struct bo *pbo;
int w = Int_val (w_v);
int h = Int_val (h_v);
int cs = Int_val (cs_v);
if (state.bo_usable) {
pbo = calloc (sizeof (*pbo), 1);
if (!pbo) {
err (1, "calloc pbo");
}
switch (cs) {
case 0:
case 1:
pbo->size = w*h*4;
break;
case 2:
pbo->size = w*h*2;
break;
default:
errx (1, "%s: invalid colorspace %d", __func__, cs);
}
state.glGenBuffersARB (1, &pbo->id);
state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, pbo->id);
state.glBufferDataARB (GL_PIXEL_UNPACK_BUFFER_ARB, pbo->size,
NULL, GL_STREAM_DRAW);
pbo->ptr = state.glMapBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB,
GL_READ_WRITE);
state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, 0);
if (!pbo->ptr) {
fprintf (stderr, "glMapBufferARB failed: %#x\n", glGetError ());
state.glDeleteBuffersARB (1, &pbo->id);
free (pbo);
ret_v = caml_copy_string ("0");
}
else {
int res;
char *s;
res = snprintf (NULL, 0, "%" FMT_ptr, FMT_ptr_cast (pbo));
if (res < 0) {
err (1, "snprintf %" FMT_ptr " failed", FMT_ptr_cast (pbo));
}
s = malloc (res+1);
if (!s) {
err (1, "malloc %d bytes failed", res+1);
}
res = sprintf (s, "%" FMT_ptr, FMT_ptr_cast (pbo));
if (res < 0) {
err (1, "sprintf %" FMT_ptr " failed", FMT_ptr_cast (pbo));
}
ret_v = caml_copy_string (s);
free (s);
}
}
else {
ret_v = caml_copy_string ("0");
}
CAMLreturn (ret_v);
}
CAMLprim value ml_freepbo (value s_v)
{
CAMLparam1 (s_v);
char *s = String_val (s_v);
struct tile *tile = parse_pointer (__func__, s);
if (tile->pbo) {
state.glDeleteBuffersARB (1, &tile->pbo->id);
tile->pbo->id = -1;
tile->pbo->ptr = NULL;
tile->pbo->size = -1;
}
CAMLreturn (Val_unit);
}
CAMLprim value ml_unmappbo (value s_v)
{
CAMLparam1 (s_v);
char *s = String_val (s_v);
struct tile *tile = parse_pointer (__func__, s);
if (tile->pbo) {
state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, tile->pbo->id);
if (state.glUnmapBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB) == GL_FALSE) {
errx (1, "glUnmapBufferARB failed: %#x\n", glGetError ());
}
tile->pbo->ptr = NULL;
state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, 0);
}
CAMLreturn (Val_unit);
}
static void setuppbo (void)
{
#ifdef __COCOA__
static CFBundleRef framework = NULL;
if (framework == NULL)
framework = CFBundleGetBundleWithIdentifier (CFSTR ("com.apple.opengl"));
#define GGPA(n) (&state.n = CFBundleGetFunctionPointerForName (framework, CFSTR (#n)))
#else
#ifdef USE_EGL
#define GGPA(n) (*(void (**) ()) &state.n = eglGetProcAddress (#n))
#else
#define GGPA(n) (*(void (**) ()) &state.n = glXGetProcAddress ((GLubyte *) #n))
#endif
state.bo_usable = GGPA (glBindBufferARB)
&& GGPA (glUnmapBufferARB)
&& GGPA (glMapBufferARB)
&& GGPA (glBufferDataARB)
&& GGPA (glGenBuffersARB)
&& GGPA (glDeleteBuffersARB);
#endif
#undef GGPA
}
CAMLprim value ml_bo_usable (value unit_v)
{
CAMLparam1 (unit_v);
CAMLreturn (Val_bool (state.bo_usable));
}
CAMLprim value ml_unproject (value ptr_v, value x_v, value y_v)
{
CAMLparam3 (ptr_v, x_v, y_v);
CAMLlocal2 (ret_v, tup_v);
struct page *page;
char *s = String_val (ptr_v);
int x = Int_val (x_v), y = Int_val (y_v);
struct pagedim *pdim;
fz_point p;
fz_matrix ctm;
page = parse_pointer (__func__, s);
pdim = &state.pagedims[page->pdimno];
ret_v = Val_int (0);
if (trylock (__func__)) {
goto done;
}
if (pdf_specifics (state.ctx, state.doc)) {
trimctm (pdf_page_from_fz_page (state.ctx, page->fzpage), page->pdimno);
ctm = state.pagedims[page->pdimno].tctm;
}
else {
ctm = fz_identity;
}
p.x = x + pdim->bounds.x0;
p.y = y + pdim->bounds.y0;
fz_concat (&ctm, &pdim->tctm, &pdim->ctm);
fz_invert_matrix (&ctm, &ctm);
fz_transform_point (&p, &ctm);
tup_v = caml_alloc_tuple (2);
ret_v = caml_alloc_small (1, 1);
Field (tup_v, 0) = Val_int (p.x);
Field (tup_v, 1) = Val_int (p.y);
Field (ret_v, 0) = tup_v;
unlock (__func__);
done:
CAMLreturn (ret_v);
}
CAMLprim value ml_project (value ptr_v, value pageno_v, value pdimno_v,
value x_v, value y_v)
{
CAMLparam5 (ptr_v, pageno_v, pdimno_v, x_v, y_v);
CAMLlocal1 (ret_v);
struct page *page;
char *s = String_val (ptr_v);
int pageno = Int_val (pageno_v);
int pdimno = Int_val (pdimno_v);
double x = Double_val (x_v), y = Double_val (y_v);
struct pagedim *pdim;
fz_point p;
fz_matrix ctm;
ret_v = Val_int (0);
lock (__func__);
if (!*s) {
page = loadpage (pageno, pdimno);
}
else {
page = parse_pointer (__func__, s);
}
pdim = &state.pagedims[pdimno];
if (pdf_specifics (state.ctx, state.doc)) {
trimctm (pdf_page_from_fz_page (state.ctx, page->fzpage), page->pdimno);
ctm = state.pagedims[page->pdimno].tctm;
}
else {
ctm = fz_identity;
}
p.x = x + pdim->bounds.x0;
p.y = y + pdim->bounds.y0;
fz_concat (&ctm, &pdim->tctm, &pdim->ctm);
fz_transform_point (&p, &ctm);
ret_v = caml_alloc_tuple (2);
Field (ret_v, 0) = caml_copy_double (p.x);
Field (ret_v, 1) = caml_copy_double (p.y);
if (!*s) {
freepage (page);
}
unlock (__func__);
CAMLreturn (ret_v);
}
CAMLprim value ml_addannot (value ptr_v, value x_v, value y_v,
value contents_v)
{
CAMLparam4 (ptr_v, x_v, y_v, contents_v);
pdf_document *pdf = pdf_specifics (state.ctx, state.doc);
if (pdf) {
pdf_annot *annot;
struct page *page;
fz_point p;
char *s = String_val (ptr_v);
page = parse_pointer (__func__, s);
annot = pdf_create_annot (state.ctx, pdf,
pdf_page_from_fz_page (state.ctx,
page->fzpage),
FZ_ANNOT_TEXT);
p.x = Int_val (x_v);
p.y = Int_val (y_v);
pdf_set_annot_contents (state.ctx, pdf, annot, String_val (contents_v));
pdf_set_text_annot_position (state.ctx, pdf, annot, p);
state.dirty = 1;
}
CAMLreturn (Val_unit);
}
CAMLprim value ml_delannot (value ptr_v, value n_v)
{
CAMLparam2 (ptr_v, n_v);
pdf_document *pdf = pdf_specifics (state.ctx, state.doc);
if (pdf) {
struct page *page;
char *s = String_val (ptr_v);
struct slink *slink;
page = parse_pointer (__func__, s);
slink = &page->slinks[Int_val (n_v)];
pdf_delete_annot (state.ctx, pdf,
pdf_page_from_fz_page (state.ctx, page->fzpage),
(pdf_annot *) slink->u.annot);
state.dirty = 1;
}
CAMLreturn (Val_unit);
}
CAMLprim value ml_modannot (value ptr_v, value n_v, value str_v)
{
CAMLparam3 (ptr_v, n_v, str_v);
pdf_document *pdf = pdf_specifics (state.ctx, state.doc);
if (pdf) {
struct page *page;
char *s = String_val (ptr_v);
struct slink *slink;
page = parse_pointer (__func__, s);
slink = &page->slinks[Int_val (n_v)];
pdf_set_annot_contents (state.ctx, pdf, (pdf_annot *) slink->u.annot,
String_val (str_v));
state.dirty = 1;
}
CAMLreturn (Val_unit);
}
CAMLprim value ml_hasunsavedchanges (value unit_v)
{
CAMLparam1 (unit_v);
CAMLreturn (Val_bool (state.dirty));
}
CAMLprim value ml_savedoc (value path_v)
{
CAMLparam1 (path_v);
pdf_document *pdf = pdf_specifics (state.ctx, state.doc);
if (pdf) {
pdf_save_document (state.ctx, pdf, String_val (path_v), NULL);
}
CAMLreturn (Val_unit);
}
static void makestippletex (void)
{
const char pixels[] = "\xff\xff\0\0";
glGenTextures (1, &state.stid);
glBindTexture (GL_TEXTURE_1D, state.stid);
glTexParameteri (GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri (GL_TEXTURE_1D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexImage1D (
GL_TEXTURE_1D,
0,
GL_ALPHA,
4,
0,
GL_ALPHA,
GL_UNSIGNED_BYTE,
pixels
);
}
CAMLprim value ml_fz_version (value UNUSED_ATTR unit_v)
{
return caml_copy_string (FZ_VERSION);
}
#ifdef USE_FONTCONFIG
static struct {
int inited;
FcConfig *config;
} fc;
static fz_font *fc_load_system_font_func (fz_context *ctx,
const char *name,
int bold,
int italic,
int UNUSED_ATTR needs_exact_metrics)
{
char *buf;
size_t i, size;
fz_font *font;
FcChar8 *path;
FcResult result;
FcPattern *pat, *pat1;
lprintf ("looking up %s bold:%d italic:%d needs_exact_metrics:%d\n",
name, bold, italic, needs_exact_metrics);
if (!fc.inited) {
fc.inited = 1;
fc.config = FcInitLoadConfigAndFonts ();
if (!fc.config) {
lprintf ("FcInitLoadConfigAndFonts failed\n");
return NULL;
}
}
if (!fc.config) return NULL;
size = strlen (name);
if (bold) size += sizeof (":bold") - 1;
if (italic) size += sizeof (":italic") - 1;
size += 1;
buf = malloc (size);
if (!buf) {
err (1, "malloc %zu failed", size);
}
strcpy (buf, name);
if (bold && italic) {
strcat (buf, ":bold:italic");
}
else {
if (bold) strcat (buf, ":bold");
if (italic) strcat (buf, ":italic");
}
for (i = 0; i < size; ++i) {
if (buf[i] == ',' || buf[i] == '-') buf[i] = ':';
}
lprintf ("fcbuf=%s\n", buf);
pat = FcNameParse ((FcChar8 *) buf);
if (!pat) {
printd ("emsg FcNameParse failed\n");
free (buf);
return NULL;
}
if (!FcConfigSubstitute (fc.config, pat, FcMatchPattern)) {
printd ("emsg FcConfigSubstitute failed\n");
free (buf);
return NULL;
}
FcDefaultSubstitute (pat);
pat1 = FcFontMatch (fc.config, pat, &result);
if (!pat1) {
printd ("emsg FcFontMatch failed\n");
FcPatternDestroy (pat);
free (buf);
return NULL;
}
if (FcPatternGetString (pat1, FC_FILE, 0, &path) != FcResultMatch) {
printd ("emsg FcPatternGetString failed\n");
FcPatternDestroy (pat);
FcPatternDestroy (pat1);
free (buf);
return NULL;
}
#if 0
printd ("emsg name=%s path=%s\n", name, path);
#endif
font = fz_new_font_from_file (ctx, name, (char *) path, 0, 0);
FcPatternDestroy (pat);
FcPatternDestroy (pat1);
free (buf);
return font;
}
#endif
CAMLprim value ml_init (value csock_v, value params_v)
{
CAMLparam2 (csock_v, params_v);
CAMLlocal2 (trim_v, fuzz_v);
int ret;
int texcount;
char *fontpath;
int colorspace;
int mustoresize;
int haspboext;
state.csock = Int_val (csock_v);
state.rotate = Int_val (Field (params_v, 0));
state.fitmodel = Int_val (Field (params_v, 1));
trim_v = Field (params_v, 2);
texcount = Int_val (Field (params_v, 3));
state.sliceheight = Int_val (Field (params_v, 4));
mustoresize = Int_val (Field (params_v, 5));
colorspace = Int_val (Field (params_v, 6));
fontpath = String_val (Field (params_v, 7));
if (caml_string_length (Field (params_v, 8)) > 0) {
state.trimcachepath = strdup (String_val (Field (params_v, 8)));
if (!state.trimcachepath) {
fprintf (stderr, "failed to strdup trimcachepath: %s\n",
strerror (errno));
}
}
haspboext = Bool_val (Field (params_v, 9));
state.ctx = fz_new_context (NULL, NULL, mustoresize);
fz_register_document_handlers (state.ctx);
#ifdef USE_FONTCONFIG
if (Bool_val (Field (params_v, 10))) {
fz_install_load_system_font_funcs (
state.ctx, fc_load_system_font_func, NULL
);
}
#endif
state.trimmargins = Bool_val (Field (trim_v, 0));
fuzz_v = Field (trim_v, 1);
state.trimfuzz.x0 = Int_val (Field (fuzz_v, 0));
state.trimfuzz.y0 = Int_val (Field (fuzz_v, 1));
state.trimfuzz.x1 = Int_val (Field (fuzz_v, 2));
state.trimfuzz.y1 = Int_val (Field (fuzz_v, 3));
set_tex_params (colorspace);
if (*fontpath) {
#ifndef USE_FONTCONFIG
state.face = load_font (fontpath);
#else
FcChar8 *path;
FcResult result;
char *buf = fontpath;
FcPattern *pat, *pat1;
fc.inited = 1;
fc.config = FcInitLoadConfigAndFonts ();
if (!fc.config) {
errx (1, "FcInitLoadConfigAndFonts failed");
}
pat = FcNameParse ((FcChar8 *) buf);
if (!pat) {
errx (1, "FcNameParse failed");
}
if (!FcConfigSubstitute (fc.config, pat, FcMatchPattern)) {
errx (1, "FcConfigSubstitute failed");
}
FcDefaultSubstitute (pat);
pat1 = FcFontMatch (fc.config, pat, &result);
if (!pat1) {
errx (1, "FcFontMatch failed");
}
if (FcPatternGetString (pat1, FC_FILE, 0, &path) != FcResultMatch) {
errx (1, "FcPatternGetString failed");
}
state.face = load_font ((char *) path);
FcPatternDestroy (pat);
FcPatternDestroy (pat1);
#endif
}
else {
int len;
const char *data = pdf_lookup_substitute_font (state.ctx, 0, 0,
0, 0, &len);
state.face = load_builtin_font (data, len);
}
if (!state.face) _exit (1);
realloctexts (texcount);
if (haspboext) {
setuppbo ();
}
makestippletex ();
ret = pthread_create (&state.thread, NULL, mainloop, NULL);
if (ret) {
errx (1, "pthread_create: %s", strerror (ret));
}
CAMLreturn (Val_unit);
}
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