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llpp/link.c
malc 85d15ff3a0 Cosmetics
2018-05-20 06:42:52 +03:00

4210 lines
112 KiB
C
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/* lots of code c&p-ed directly from mupdf */
#ifdef __clang__
#pragma GCC diagnostic error "-Weverything"
#pragma GCC diagnostic ignored "-Wpadded"
#pragma GCC diagnostic ignored "-Wsign-conversion"
#pragma GCC diagnostic ignored "-Wdocumentation-unknown-command"
#pragma GCC diagnostic ignored "-Wdocumentation"
#pragma GCC diagnostic ignored "-Wmissing-prototypes"
#endif
#define CAML_NAME_SPACE
#define FIXME 0
extern char **environ;
#include <errno.h>
#include <stdio.h>
#include <ctype.h>
#include <string.h>
#include <stdlib.h>
#include <signal.h>
#include <math.h>
#include <wchar.h>
#include <locale.h>
#include <langinfo.h>
#include <unistd.h>
#include <pthread.h>
#include <sys/uio.h>
#include <sys/time.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include <sys/utsname.h>
#include <spawn.h>
#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
#pragma GCC diagnostic push
#ifdef __clang__
#pragma GCC diagnostic ignored "-Wreserved-id-macro"
#endif
#pragma GCC diagnostic ignored "-Wpedantic"
#include <caml/fail.h>
#include <caml/alloc.h>
#include <caml/memory.h>
#include <caml/unixsupport.h>
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wfloat-equal"
#include <mupdf/fitz.h>
#include <mupdf/pdf.h>
#pragma GCC diagnostic pop
#include <ft2build.h>
#include FT_FREETYPE_H
#pragma GCC diagnostic pop
#include "cutils.h"
#define PIGGYBACK
#define CACHE_PAGEREFS
#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, 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_page *fzpage;
fz_display_list *dlist;
fz_link *links;
int slinkcount;
struct slink *slinks;
int annotcount;
struct annot *annots;
fz_stext_char *fmark, *lmark;
};
enum { FitWidth, FitProportional, FitPage };
static 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;
int 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 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
int utf8cs;
} state;
struct bo {
GLuint id;
void *ptr;
size_t size;
};
#pragma GCC diagnostic ignored "-Wdouble-promotion"
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);
}
#pragma GCC diagnostic error "-Wdouble-promotion"
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 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 - size) {
if (n < 0 && errno == EINTR) goto again;
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;
uint32_t size4 = size;
struct iovec iov[2] = {
{ .iov_base = &size4, .iov_len = 4 },
{ .iov_base = p, .iov_len = size }
};
again:
n = writev (fd, iov, 2);
if (n < 0 && errno == EINTR) goto again;
if (n - size - 4) {
if (!n) errx (1, "EOF while writing data");
err (1, "writev (fd %d, req %d, ret %zd)", fd, size + 4, n);
}
}
static int readlen (int fd)
{
uint32_t u;
readdata (fd, &u, 4);
return u;
}
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, ...)
{
char fbuf[64];
int size = sizeof (fbuf), len;
va_list ap;
char *buf = fbuf;
for (;;) {
va_start (ap, fmt);
len = vsnprintf (buf, size, 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 == fbuf ? NULL : buf, size);
if (!buf) err (1, "realloc for temp buf (%d bytes) failed", size);
}
if (buf != fbuf) free (buf);
}
static void closedoc (void)
{
#ifdef CACHE_PAGEREFS
if (state.pdflut.objs) {
for (int 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 layouth)
{
for (int 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);
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;
}
}
}
if (layouth >= 0)
fz_layout_document (state.ctx, state.doc, 460, layouth, 12);
state.pagecount = fz_count_pages (state.ctx, state.doc);
return 1;
}
static void docinfo (void)
{
struct { char *tag; char *name; } metatbl[] = {
{ FZ_META_INFO_TITLE, "Title" },
{ FZ_META_INFO_AUTHOR, "Author" },
{ FZ_META_FORMAT, "Format" },
{ FZ_META_ENCRYPTION, "Encryption" },
{ "info:Creator", "Creator" },
{ "info:Producer", "Producer" },
{ "info:CreationDate", "Creation date" },
};
int len = 0;
char *buf = NULL;
for (size_t i = 0; i < sizeof (metatbl) / sizeof (metatbl[1]); ++i) {
int need;
again:
need = fz_lookup_metadata (state.ctx, state.doc,
metatbl[i].tag, buf, len);
if (need > 0) {
if (need <= len) {
printd ("info %s\t%s", metatbl[i].name, buf);
}
else {
buf = realloc (buf, need + 1);
if (!buf) err (1, "docinfo realloc %d", need + 1);
len = need + 1;
goto again;
}
}
}
free (buf);
printd ("infoend");
}
static void unlinktile (struct tile *tile)
{
for (int 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->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;
ptrdiff_t pdimno = pdim - state.pagedims;
ARSERT (pdim - state.pagedims < INT_MAX);
if (pdf_specifics (state.ctx, state.doc)) {
trimctm (pdf_page_from_fz_page (state.ctx, fzpage), (int) 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 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 (%zu bytes)", tilesize);
}
for (int 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, NULL, 1, pbo->ptr);
tile->pbo = pbo;
}
else {
tile->pixmap =
fz_new_pixmap_with_bbox (state.ctx, state.colorspace, &bbox,
NULL, 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 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 (int i = 0; i < len; i++) {
pdf_obj *kid = pdf_array_get (ctx, kids, i);
const 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 (void)
{
double start, end;
FILE *trimf = NULL;
fz_rect rootmediabox = fz_empty_rect;
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)
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_empty_rect;
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);
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, mediabox.x0));
pdf_array_push (ctx, obj,
pdf_new_real (ctx, mediabox.y0));
pdf_array_push (ctx, obj,
pdf_new_real (ctx, mediabox.x1));
pdf_array_push (ctx, obj,
pdf_new_real (ctx, 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) {
printd ("emsg failed to load page %d", pageno);
}
}
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)) {
printd ("emsg cannot find page size for page %d",
pageno);
}
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);
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);
}
fz_catch (ctx) {
}
if (trimf) {
size_t n = fwrite (&mediabox, sizeof (mediabox), 1, trimf);
if (n - 1) {
err (1, "fwrite trim mediabox");
}
}
}
else {
if (trimf) {
size_t 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) {
printd ("emsg failed to load page %d", pageno);
}
}
}
}
if (state.pagedimcount == 0
|| ((void) (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 %zu (%d elems)",
size, state.pagedimcount + 1);
}
p = &state.pagedims[state.pagedimcount++];
p->rotate = rotate;
p->mediabox = mediabox;
p->pageno = pageno;
}
}
end = now ();
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 = NULL;
float zw, w, maxw = 0.0, zoom = 1.0;
if (state.pagedimcount == 0) return;
switch (state.fitmodel) {
case FitProportional:
for (pindex = 0; pindex < state.pagedimcount; ++pindex) {
float 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 = (int) (((maxw - w) * zoom) / 2.f);
break;
case FitPage:
{
float zh, h;
zw = maxw / w;
h = box.y1 - box.y0;
zh = state.h / h;
zoom = fz_min (zw, zh);
p->left = (int) ((maxw - (w * zoom)) / 2.f);
}
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);
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);
}
struct pagedim *pdimofpageno (int pageno)
{
struct pagedim *pdim = state.pagedims;
for (int i = 0; i < state.pagedimcount; ++i) {
if (state.pagedims[i].pageno > pageno)
break;
pdim = &state.pagedims[i];
}
return pdim;
}
static void recurse_outline (fz_outline *outline, int level)
{
while (outline) {
if (outline->page >= 0) {
fz_point p = {.x = outline->x, .y = outline->y};
struct pagedim *pdim = pdimofpageno (outline->page);
int h = fz_maxi (fz_absi (pdim->bounds.y1 - pdim->bounds.y0), 0);
fz_transform_point (&p, &pdim->ctm);
printd ("o %d %d %d %d %s",
level, outline->page, (int) p.y, h, outline->title);
}
else {
printd ("on %d %s", level, outline->title);
}
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 *strofline (fz_stext_line *line)
{
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 = line->first_char; ch; ch = ch->next) {
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 matchline (regex_t *re, fz_stext_line *line,
int stop, int pageno, double start)
{
int ret;
char *p;
regmatch_t rm;
p = strofline (line);
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 {
fz_point p1, p2, p3, p4;
fz_rect s = {0,0,0,0}, e;
fz_stext_char *ch;
int o = 0;
for (ch = line->first_char; ch; ch = ch->next) {
o += fz_runelen (ch->c);
if (o > rm.rm_so) {
s = ch->bbox;
break;
}
}
for (;ch; ch = ch->next) {
o += fz_runelen (ch->c);
if (o > rm.rm_eo) break;
}
e = ch->bbox;
p1.x = s.x0;
p1.y = s.y0;
p2.x = e.x1;
p2.y = s.y0;
p3.x = e.x1;
p3.y = e.y1;
p4.x = s.x0;
p4.y = e.y1;
#pragma GCC diagnostic ignored "-Wdouble-promotion"
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);
}
#pragma GCC diagnostic error "-Wdouble-promotion"
free (p);
return 1;
}
}
/* wishful thinking function */
static void search (regex_t *re, int pageno, int y, int forward)
{
fz_device *tdev;
fz_stext_page *text;
struct pagedim *pdim;
int stop = 0, niters = 0;
double start, end;
fz_page *page;
fz_stext_block *block;
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);
}
}
pdim = pdimofpageno (pageno);
text = fz_new_stext_page (state.ctx, &pdim->mediabox);
tdev = fz_new_stext_device (state.ctx, text, 0);
page = fz_load_page (state.ctx, state.doc, pageno);
{
fz_matrix ctm = pagectm1 (page, pdim);
fz_run_page (state.ctx, page, tdev, &ctm, NULL);
}
fz_close_device (state.ctx, tdev);
fz_drop_device (state.ctx, tdev);
if (forward) {
for (block = text->first_block; block; block = block->next) {
fz_stext_line *line;
if (block->type != FZ_STEXT_BLOCK_TEXT) continue;
for (line = block->u.t.first_line; line; line = line->next) {
if (line->bbox.y0 < y + 1) continue;
switch (matchline (re, line, stop, pageno, start)) {
case 0: break;
case 1: stop = 1; break;
case -1: stop = 1; goto endloop;
}
}
}
}
else {
for (block = text->last_block; block; block = block->prev) {
fz_stext_line *line;
if (block->type != FZ_STEXT_BLOCK_TEXT) continue;
for (line = block->u.t.last_line; line; line = line->prev) {
if (line->bbox.y0 < y + 1) continue;
switch (matchline (re, line, 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_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)
{
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;
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
state.texty = GL_UNSIGNED_INT_8_8_8_8_REV;
#else
state.texty = GL_UNSIGNED_INT_8_8_8_8;
#endif
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) + sizeof (*state.texowners));
state.texids = realloc (state.texids, size);
if (!state.texids) {
err (1, "realloc texs %zu", size);
}
state.texowners = (void *) (state.texids + texcount);
if (texcount > state.texcount) {
glGenTextures (texcount - state.texcount,
state.texids + state.texcount);
for (int 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;
if (state.utf8cs) {
return s;
}
len = mbstowcs (NULL, s, strlen (s));
if (len == 0) {
return s;
}
else {
if (len == (size_t) -1) {
printd ("emsg mbtoutf8: mbstowcs: %d:%s", errno, strerror (errno));
return s;
}
}
tmp = calloc (len, sizeof (wchar_t));
if (!tmp) {
printd ("emsg mbtoutf8: calloc(%zu, %zu): %d:%s",
len, sizeof (wchar_t), errno, strerror (errno));
return s;
}
ret = mbstowcs (tmp, s, len);
if (ret == (size_t) -1) {
printd ("emsg mbtoutf8: mbswcs %zu characters failed: %d:%s",
len, errno, strerror (errno));
free (tmp);
return s;
}
len = 0;
for (i = 0; i < ret; ++i) {
len += fz_runelen (tmp[i]);
}
p = r = malloc (len + 1);
if (!r) {
printd ("emsg mbtoutf8: malloc(%zu)", len);
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 off, usedoccss, ok = 0, layouth;
char *password;
char *filename;
char *utf8filename;
size_t filenamelen;
fz_var (ok);
ret = sscanf (p + 5, " %d %d %n", &usedoccss, &layouth, &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;
if (password[strlen (password) + 1]) {
fz_set_user_css (state.ctx, password + strlen (password) + 1);
}
lock ("open");
fz_set_use_document_css (state.ctx, usedoccss);
fz_try (state.ctx) {
ok = openxref (filename, password, layouth);
}
fz_catch (state.ctx) {
utf8filename = mbtoutf8 (filename);
printd ("msg Could not open %s", utf8filename);
if (utf8filename != filename) {
free (utf8filename);
}
}
if (ok) {
docinfo ();
initpdims ();
}
unlock ("open");
if (ok) {
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, " %" SCNxPTR, (uintptr_t *) &ptr);
if (ret != 1) {
errx (1, "malformed freepage `%.*s' ret=%d", len, p, ret);
}
lock ("freepage");
freepage (ptr);
unlock ("freepage");
}
else if (!strncmp ("freetile", p, 8)) {
void *ptr;
ret = sscanf (p + 8, " %" SCNxPTR, (uintptr_t *) &ptr);
if (ret != 1) {
errx (1, "malformed freetile `%.*s' ret=%d", len, p, ret);
}
lock ("freetile");
freetile (ptr);
unlock ("freetile");
}
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) {
state.w = w;
for (int 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;
int fitmodel;
pdf_document *pdf;
printd ("clear");
ret = sscanf (p + 9, " %d %d %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) {
fz_point xy;
struct pagedim *pdim;
int pageno = pdf_lookup_anchor (state.ctx, pdf, nameddest,
&xy.x, &xy.y);
pdim = pdimofpageno (pageno);
fz_transform_point (&xy, &pdim->ctm);
printd ("a %d %d %d", pageno, (int) xy.x, (int) xy.y);
}
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 %" PRIxPTR " %f", (uintptr_t) 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, " %" SCNxPTR " %d %d %d %d %" SCNxPTR,
(uintptr_t *) &page, &x, &y, &w, &h,
(uintptr_t *) &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 %" PRIxPTR " %u %f",
x, y, (uintptr_t) (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 ();
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) {
state.sliceheight = h;
for (int 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_isexternallink (value uri_v)
{
CAMLparam1 (uri_v);
int ext = fz_is_external_link (state.ctx, String_val (uri_v));
CAMLreturn (Val_bool (ext));
}
CAMLprim value ml_uritolocation (value uri_v)
{
CAMLparam1 (uri_v);
CAMLlocal1 (ret_v);
int pageno;
fz_point xy;
struct pagedim *pdim;
pageno = fz_resolve_link (state.ctx, state.doc, String_val (uri_v),
&xy.x, &xy.y);
pdim = pdimofpageno (pageno);
fz_transform_point (&xy, &pdim->ctm);
ret_v = caml_alloc_tuple (3);
Field (ret_v, 0) = Val_int (pageno);
Field (ret_v, 1) = caml_copy_double ((double) xy.x);
Field (ret_v, 2) = caml_copy_double ((double) xy.y);
CAMLreturn (ret_v);
}
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)
{
fz_irect bbox;
fz_rect rect;
fz_stext_block *block;
int seen = 0;
unsigned char selcolor[] = {15,15,15,140};
if (!page->fmark || !page->lmark) 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 (block = page->text->first_block; block; block = block->next) {
fz_stext_line *line;
if (block->type != FZ_STEXT_BLOCK_TEXT) continue;
for (line = block->u.t.first_line; line; line = line->next) {
fz_stext_char *ch;
rect = fz_empty_rect;
for (ch = line->first_char; ch; ch = ch->next) {
if (ch == page->fmark) seen = 1;
if (seen) fz_union_rect (&rect, &ch->bbox);
if (ch == page->lmark) {
fz_round_rect (&bbox, &rect);
recti (bbox.x0 + ox, bbox.y0 + oy,
bbox.x1 + ox, bbox.y1 + oy);
goto done;
}
}
fz_round_rect (&bbox, &rect);
recti (bbox.x0 + ox, bbox.y0 + oy,
bbox.x1 + ox, bbox.y1 + oy);
}
}
done:
glDisable (GL_BLEND);
}
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wdouble-promotion"
#pragma GCC diagnostic ignored "-Wconversion"
#include "glfont.c"
#pragma GCC diagnostic pop
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 = hypotf (w, h) * .25f;
w = p3->x - p2->x;
h = p3->y - p2->y;
s = hypotf (w, 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 ensurelinks (struct page *page)
{
if (!page->links)
page->links = fz_load_links (state.ctx, page->fzpage);
}
static void highlightlinks (struct page *page, int xoff, int yoff)
{
fz_matrix ctm, tm, pm;
fz_link *link;
GLfloat *texcoords = state.texcoords;
GLfloat *vertices = state.vertices;
ensurelinks (page);
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 = page->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;
/* TODO: different colours for different schemes */
if (fz_is_external_link (state.ctx, link->uri)) glColor3ub (0, 0, 255);
else glColor3ub (255, 0, 0);
stipplerect (&ctm, &p1, &p2, &p3, &p4, texcoords, vertices);
}
for (int 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 = NULL;
page->lmark = NULL;
page->text = 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;
}
if (page->links) {
fz_drop_link (state.ctx, page->links);
page->links = NULL;
}
}
static void ensureslinks (struct page *page)
{
fz_matrix ctm;
int i, count;
size_t slinksize = sizeof (*page->slinks);
fz_link *link;
ensureannots (page);
if (state.gen != page->sgen) {
dropslinks (page);
page->sgen = state.gen;
}
if (page->slinks) return;
ensurelinks (page);
ctm = pagectm (page);
count = page->annotcount;
for (link = page->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 = page->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);
}
}
static void highlightslinks (struct page *page, int xoff, int yoff,
int noff, char *targ, mlsize_t tlen, int hfsize)
{
char buf[40];
struct slink *slink;
float x0, y0, x1, y1, w;
ensureslinks (page);
glColor3ub (0xc3, 0xb0, 0x91);
for (int 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 ((int) x0, (int) y0, (int) x1, (int) y1);
}
}
glEnable (GL_BLEND);
glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glEnable (GL_TEXTURE_2D);
glColor3ub (0, 0, 0);
for (int 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 void 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);
CAMLreturn0;
}
CAMLprim void ml_endtiles (value unit_v)
{
CAMLparam1 (unit_v);
glDisable (TEXT_TYPE);
CAMLreturn0;
}
CAMLprim void 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;
}
CAMLreturn0;
}
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 = (float) v[4];
p1.y = (float) v[5];
p2.x = (float) v[6];
p2.y = (float) v[5];
p3.x = (float) v[6];
p3.y = (float) v[7];
p4.x = (float) v[4];
p4.y = (float) 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));
mlsize_t 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 void 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);
CAMLreturn0;
}
static struct annot *getannot (struct page *page, int x, int y)
{
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 (int 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;
ensureslinks (page);
p.x = x;
p.y = y;
ctm = pagectm (page);
fz_invert_matrix (&ctm, &ctm);
fz_transform_point (&p, &ctm);
for (link = page->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);
tdev = fz_new_stext_device (state.ctx, page->text, 0);
ctm = pagectm (page);
fz_run_display_list (state.ctx, page->dlist,
tdev, &ctm, &fz_infinite_rect, NULL);
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);
fz_link *link = fz_load_links (state.ctx, page);
found = !!link;
fz_drop_link (state.ctx, link);
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, utext, uannot };
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;
char *s = String_val (ptr_v);
struct slink *slink;
ret_v = Val_int (0);
page = parse_pointer (__func__, s);
lock (__func__);
ensureslinks (page);
slink = &page->slinks[Int_val (n_v)];
if (slink->tag == SLINK) {
link = slink->u.link;
str_v = caml_copy_string (link->uri);
ret_v = caml_alloc_small (1, uuri);
Field (ret_v, 0) = str_v;
}
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);
CAMLlocal1 (ret_v);
pdf_document *pdf;
char *contents = NULL;
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_copy_annot_contents (state.ctx,
(pdf_annot *) slink->u.annot);
}
unlock (__func__);
if (contents) {
ret_v = caml_copy_string (contents);
fz_free (state.ctx, contents);
}
else {
ret_v = caml_copy_string ("");
}
CAMLreturn (ret_v);
}
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) {
str_v = caml_copy_string (link->uri);
ret_v = caml_alloc_small (1, uuri);
Field (ret_v, 0) = str_v;
}
else {
fz_rect *b;
fz_stext_block *block;
ensuretext (page);
for (block = page->text->first_block; block; block = block->next) {
fz_stext_line *line;
if (block->type != FZ_STEXT_BLOCK_TEXT) continue;
b = &block->bbox;
if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
continue;
for (line = block->u.t.first_line; line; line = line->next) {
fz_stext_char *ch;
b = &line->bbox;
if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
continue;
for (ch = line->first_char; ch; ch = ch->next) {
b = &ch->bbox;
if (x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1) {
const char *n2 = fz_font_name (state.ctx, ch->font);
FT_FaceRec *face = fz_font_ft_face (state.ctx,
ch->font);
if (!n2) n2 = "<unknown font>";
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 };
CAMLprim void 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 = NULL;
page->lmark = NULL;
unlock (__func__);
done:
CAMLreturn0;
}
static int uninteresting (int c)
{
return c == ' ' || c == '\n' || c == '\t' || c == '\n' || c == '\r'
|| ispunct (c);
}
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_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) {
page->fmark = page->text->first_block->u.t.first_line->first_char;
page->lmark = page->text->last_block->u.t.last_line->last_char;
ret_v = Val_bool (1);
goto unlock;
}
x += pdim->bounds.x0;
y += pdim->bounds.y0;
for (block = page->text->first_block; block; block = block->next) {
if (block->type != FZ_STEXT_BLOCK_TEXT) continue;
b = &block->bbox;
if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
continue;
if (mark == mark_block) {
page->fmark = block->u.t.first_line->first_char;
page->lmark = block->u.t.last_line->last_char;
ret_v = Val_bool (1);
goto unlock;
}
for (line = block->u.t.first_line; line; line = line->next) {
fz_stext_char *ch;
b = &line->bbox;
if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
continue;
if (mark == mark_line) {
page->fmark = line->first_char;
page->lmark = line->last_char;
ret_v = Val_bool (1);
goto unlock;
}
for (ch = line->first_char; ch; ch = ch->next) {
fz_stext_char *ch2, *first = NULL, *last = NULL;
b = &ch->bbox;
if (x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1) {
for (ch2 = line->first_char; ch2 != ch; ch2 = ch2->next) {
if (uninteresting (ch2->c)) first = NULL;
else if (!first) first = ch2;
}
for (ch2 = ch; ch2; ch2 = ch2->next) {
if (uninteresting (ch2->c)) break;
last = ch2;
}
page->fmark = first;
page->lmark = last;
ret_v = Val_bool (1);
goto unlock;
}
}
}
}
unlock:
if (!Bool_val (ret_v)) {
page->fmark = NULL;
page->lmark = NULL;
}
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;
struct pagedim *pdim;
fz_stext_block *block;
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 (block = page->text->first_block; block; block = block->next) {
switch (block->type) {
case FZ_STEXT_BLOCK_TEXT:
b = &block->bbox;
break;
case FZ_STEXT_BLOCK_IMAGE:
b = &block->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, (double) b->x0);
Store_double_field (res_v, 1, (double) b->x1);
Store_double_field (res_v, 2, (double) b->y0);
Store_double_field (res_v, 3, (double) b->y1);
Field (ret_v, 0) = res_v;
}
unlock (__func__);
done:
CAMLreturn (ret_v);
}
CAMLprim void 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 x0, x1, y0, y1;
fz_stext_char *ch;
fz_stext_line *line;
fz_stext_block *block;
fz_stext_char *fc, *lc;
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;
}
fc = page->fmark;
lc = page->lmark;
for (block = page->text->first_block; block; block = block->next) {
if (block->type != FZ_STEXT_BLOCK_TEXT) continue;
for (line = block->u.t.first_line; line; line = line->next) {
for (ch = line->first_char; ch; ch = ch->next) {
b = ch->bbox;
if (x0 >= b.x0 && x0 <= b.x1 && y0 >= b.y0 && y0 <= b.y1) {
fc = ch;
}
if (x1 >= b.x0 && x1 <= b.x1 && y1 >= b.y0 && y1 <= b.y1) {
lc = ch;
}
}
}
}
if (x1 < x0 && fc == lc) {
fz_stext_char *t;
t = fc;
fc = lc;
lc = t;
}
page->fmark = fc;
page->lmark = lc;
unlock (__func__);
done:
CAMLreturn0;
}
static int pipechar (FILE *f, fz_stext_char *ch)
{
char buf[4];
int len;
size_t ret;
len = fz_runetochar (buf, ch->c);
ret = fwrite (buf, len, 1, f);
if (ret != 1) {
printd ("emsg failed to write %d bytes ret=%zu: %d:%s",
len, ret, errno, strerror (errno));
return -1;
}
return 0;
}
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 = (pid_t) -1;
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) {
printd ("emsg posix_spawnattr_destroy: %d:%s", ret1, strerror (ret1));
}
fail1:
if ((ret1 = posix_spawn_file_actions_destroy (&fa)) != 0) {
printd ("emsg posix_spawn_file_actions_destroy: %d:%s",
ret1, strerror (ret1));
}
if (msg)
unix_error (ret, msg, earg_v);
CAMLreturn (Val_int (pid));
}
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 && page->lmark);
unlock (__func__);
done:
CAMLreturn (ret_v);
}
CAMLprim void 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_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 || !page->lmark) {
printd ("emsg nothing to copy on page %d", page->pageno);
goto unlock;
}
f = fdopen (fd, "w");
if (!f) {
printd ("emsg failed to fdopen sel pipe (from fd %d): %d:%s",
fd, errno, strerror (errno));
f = stdout;
}
for (block = page->text->first_block; block; block = block->next) {
if (block->type != FZ_STEXT_BLOCK_TEXT) continue;
for (line = block->u.t.first_line; line; line = line->next) {
fz_stext_char *ch;
for (ch = line->first_char; ch; ch = ch->next) {
if (seen || ch == page->fmark) {
do {
pipechar (f, ch);
if (ch == page->lmark) goto close;
} while ((ch = ch->next));
seen = 1;
break;
}
}
if (seen) fputc ('\n', f);
}
}
close:
if (f != stdout) {
int ret = fclose (f);
fd = -1;
if (ret == -1) {
if (errno != ECHILD) {
printd ("emsg failed to close sel pipe: %d:%s",
errno, strerror (errno));
}
}
}
unlock:
unlock (__func__);
done:
if (fd >= 0) {
if (close (fd)) {
printd ("emsg failed to close sel pipe: %d:%s",
errno, strerror (errno));
}
}
CAMLreturn0;
}
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, (double) box.x0);
Store_double_field (ret_v, 1, (double) box.x1);
Store_double_field (ret_v, 2, (double) box.y0);
Store_double_field (ret_v, 3, (double) 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;
float zoom = -1.;
float maxh = 0.0;
struct pagedim *p;
float winw = Int_val (winw_v);
float winh = Int_val (winh_v);
float dw = Int_val (dw_v);
float cols = Int_val (cols_v);
float pw = 1.0, ph = 1.0;
if (trylock (__func__)) {
goto done;
}
for (i = 0, p = state.pagedims; i < state.pagedimcount; ++i, ++p) {
float w = p->pagebox.x1 / cols;
float 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 ((double) zoom);
CAMLreturn (ret_v);
}
CAMLprim value ml_getmaxw (value unit_v)
{
CAMLparam1 (unit_v);
CAMLlocal1 (ret_v);
int i;
float maxw = -1.;
struct pagedim *p;
if (trylock (__func__)) {
goto done;
}
for (i = 0, p = state.pagedims; i < state.pagedimcount; ++i, ++p) {
float w = p->pagebox.x1;
maxw = fz_max (maxw, w);
}
unlock (__func__);
done:
ret_v = caml_copy_double ((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 = (double) 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 = (double) 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);
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 void ml_setaalevel (value level_v)
{
CAMLparam1 (level_v);
state.aalevel = Int_val (level_v);
CAMLreturn0;
}
#ifndef __COCOA__
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wvariadic-macros"
#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;
static void initcurs (void)
{
for (size_t n = 0; n < CURS_COUNT; ++n) {
glx.curs[n] = XCreateFontCursor (glx.dpy, shapes[n]);
}
}
#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[] = {
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");
}
if (!eglChooseConfig (glx.edpy, attribs, &conf, 1, &num_conf) ||
!num_conf) {
caml_failwith ("eglChooseConfig");
}
if (!eglGetConfigAttrib (glx.edpy, conf, EGL_NATIVE_VISUAL_ID, &visid)) {
caml_failwith ("eglGetConfigAttrib");
}
glx.conf = conf;
initcurs ();
glx.wid = Int_val (wid_v);
CAMLreturn (Val_int (visid));
}
CAMLprim void 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");
}
if (!eglMakeCurrent (glx.edpy, glx.win, glx.win, glx.ctx)) {
glx.ctx = NULL;
caml_failwith ("eglMakeCurrent");
}
CAMLreturn0;
}
#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");
}
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");
}
initcurs ();
glx.wid = Int_val (wid_v);
CAMLreturn (Val_int (glx.visual->visualid));
}
CAMLprim void 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");
}
CAMLreturn0;
}
#endif
CAMLprim void 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);
CAMLreturn0;
}
CAMLprim void 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
CAMLreturn0;
}
long keysym2ucs (KeySym);
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 = (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, (int) ucs_v);
buf[len] = 0;
str_v = caml_copy_string (buf);
CAMLreturn (str_v);
}
#endif
enum { piunknown, pilinux, piosx, pisun, pibsd };
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 __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 void 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);
}
CAMLreturn0;
}
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, (GLsizei) 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) {
printd ("emsg glMapBufferARB failed: %#x", glGetError ());
state.glDeleteBuffersARB (1, &pbo->id);
free (pbo);
ret_v = caml_copy_string ("0");
}
else {
int res;
char *s;
res = snprintf (NULL, 0, "%" PRIxPTR, (uintptr_t) pbo);
if (res < 0) {
err (1, "snprintf %" PRIxPTR " failed", (uintptr_t) pbo);
}
s = malloc (res+1);
if (!s) {
err (1, "malloc %d bytes failed", res+1);
}
res = sprintf (s, "%" PRIxPTR, (uintptr_t) pbo);
if (res < 0) {
err (1, "sprintf %" PRIxPTR " failed", (uintptr_t) pbo);
}
ret_v = caml_copy_string (s);
free (s);
}
}
else {
ret_v = caml_copy_string ("0");
}
CAMLreturn (ret_v);
}
CAMLprim void 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;
}
CAMLreturn0;
}
CAMLprim void 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);
}
CAMLreturn0;
}
static void setuppbo (void)
{
#ifdef __clang__
#pragma GCC diagnostic ignored "-Wunused-macros"
#endif
#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 (**) (void)) &state.n = eglGetProcAddress (#n))
#else
#define GGPA(n) (*(void (**) (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);
float x = (float) Double_val (x_v), y = (float) 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 ((double) p.x);
Field (ret_v, 1) = caml_copy_double ((double) p.y);
if (!*s) {
freepage (page);
}
unlock (__func__);
CAMLreturn (ret_v);
}
CAMLprim void 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_page_from_fz_page (state.ctx,
page->fzpage),
PDF_ANNOT_TEXT);
p.x = Int_val (x_v);
p.y = Int_val (y_v);
pdf_set_annot_contents (state.ctx, annot, String_val (contents_v));
pdf_set_text_annot_position (state.ctx, annot, p);
state.dirty = 1;
}
CAMLreturn0;
}
CAMLprim void 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_page_from_fz_page (state.ctx, page->fzpage),
(pdf_annot *) slink->u.annot);
state.dirty = 1;
}
CAMLreturn0;
}
CAMLprim void 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_annot *) slink->u.annot,
String_val (str_v));
state.dirty = 1;
}
CAMLreturn0;
}
CAMLprim value ml_hasunsavedchanges (value unit_v)
{
CAMLparam1 (unit_v);
CAMLreturn (Val_bool (state.dirty));
}
CAMLprim void 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);
}
CAMLreturn0;
}
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 (void)
{
return caml_copy_string (FZ_VERSION);
}
CAMLprim value ml_llpp_version (void)
{
extern char llpp_version[];
return caml_copy_string (llpp_version);
}
CAMLprim void 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));
#ifdef __COCOA__
state.utf8cs = 1;
#else
/* http://www.cl.cam.ac.uk/~mgk25/unicode.html */
if (setlocale (LC_CTYPE, "")) {
const char *cset = nl_langinfo (CODESET);
state.utf8cs = !strcmp (cset, "UTF-8");
}
else {
printd ("emsg setlocale: %d:%s", errno, strerror (errno));
}
#endif
if (caml_string_length (Field (params_v, 8)) > 0) {
state.trimcachepath = ystrdup (String_val (Field (params_v, 8)));
if (!state.trimcachepath) {
printd ("emsg failed to strdup trimcachepath: %d:%s",
errno, strerror (errno));
}
}
haspboext = Bool_val (Field (params_v, 9));
state.ctx = fz_new_context (NULL, NULL, mustoresize);
fz_register_document_handlers (state.ctx);
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) {
state.face = load_font (fontpath);
}
else {
int len;
const unsigned char *data;
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));
}
CAMLreturn0;
}
#if FIXME || !FIXME
static void UNUSED_ATTR NO_OPTIMIZE_ATTR refmacs (void) {}
#endif
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