+++ /dev/null
-/* Ghostscript widget for GTK/GNOME
- *
- * Copyright (C) 1998 - 2005 the Free Software Foundation
- *
- * Authors: Jonathan Blandford, Jaka Mocnik
- *
- * Based on code by: Federico Mena (Quartic), Szekeres Istvan (Pista)
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
- */
-
-#include "config.h"
-#include <string.h>
-#include <stdlib.h>
-#include <signal.h>
-#include <gtk/gtk.h>
-#include <gtk/gtkobject.h>
-#include <gdk/gdkprivate.h>
-#include <gdk/gdkx.h>
-#include <gdk/gdk.h>
-#include <glib/gi18n.h>
-#include <X11/Intrinsic.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <stdlib.h>
-#include <errno.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <sys/wait.h>
-#include <stdio.h>
-#include <math.h>
-
-#include "ps-document.h"
-#include "ev-debug.h"
-#include "gsdefaults.h"
-#include "ev-ps-exporter.h"
-
-#ifdef HAVE_LOCALE_H
-# include <locale.h>
-#endif
-
-/* if POSIX O_NONBLOCK is not available, use O_NDELAY */
-#if !defined(O_NONBLOCK) && defined(O_NDELAY)
-# define O_NONBLOCK O_NDELAY
-#endif
-
-#define MAX_BUFSIZE 1024
-
-#define PS_DOCUMENT_IS_COMPRESSED(gs) (PS_DOCUMENT(gs)->gs_filename_unc != NULL)
-#define PS_DOCUMENT_GET_PS_FILE(gs) (PS_DOCUMENT_IS_COMPRESSED(gs) ? \
- PS_DOCUMENT(gs)->gs_filename_unc : \
- PS_DOCUMENT(gs)->gs_filename)
-
-GCond* pixbuf_cond = NULL;
-GMutex* pixbuf_mutex = NULL;
-GdkPixbuf *current_pixbuf = NULL;
-
-enum {
- PROP_0,
- PROP_TITLE
-};
-
-/* structure to describe section of file to send to ghostscript */
-struct record_list {
- FILE *fp;
- long begin;
- guint len;
- gboolean seek_needed;
- gboolean close;
- struct record_list *next;
-};
-
-typedef struct {
- int page;
- double scale;
- PSDocument *document;
-} PSRenderJob;
-
-static gboolean broken_pipe = FALSE;
-
-/* Forward declarations */
-static void ps_document_init(PSDocument * gs);
-static void ps_document_class_init(PSDocumentClass * klass);
-static void ps_document_finalize(GObject * object);
-static void send_ps(PSDocument * gs, long begin, unsigned int len, gboolean close);
-static void close_pipe(int p[2]);
-static void output(gpointer data, gint source, GdkInputCondition condition);
-static void input(gpointer data, gint source, GdkInputCondition condition);
-static void stop_interpreter(PSDocument * gs);
-static gint start_interpreter(PSDocument * gs);
-static void ps_document_document_iface_init (EvDocumentIface *iface);
-static void ps_document_ps_exporter_iface_init (EvPSExporterIface *iface);
-static gboolean ps_document_widget_event (GtkWidget *widget, GdkEvent *event, gpointer data);
-
-static GObjectClass *parent_class = NULL;
-
-static PSDocumentClass *gs_class = NULL;
-
-static void
-ps_document_init (PSDocument *gs)
-{
- gs->bpixmap = NULL;
-
- gs->interpreter_pid = -1;
-
- gs->busy = FALSE;
- gs->gs_filename = 0;
- gs->gs_filename_unc = 0;
-
- broken_pipe = FALSE;
-
- gs->structured_doc = FALSE;
- gs->reading_from_pipe = FALSE;
- gs->send_filename_to_gs = FALSE;
-
- gs->doc = NULL;
- gs->loaded = FALSE;
-
- gs->interpreter_input = -1;
- gs->interpreter_output = -1;
- gs->interpreter_err = -1;
- gs->interpreter_input_id = 0;
- gs->interpreter_output_id = 0;
- gs->interpreter_error_id = 0;
-
- gs->ps_input = NULL;
- gs->input_buffer = NULL;
- gs->input_buffer_ptr = NULL;
- gs->bytes_left = 0;
- gs->buffer_bytes_left = 0;
-
- gs->gs_status = _("No document loaded.");
-
- gs->ps_export_pagelist = NULL;
- gs->ps_export_filename = NULL;
-
- pixbuf_cond = g_cond_new ();
- pixbuf_mutex = g_mutex_new ();
-}
-
-static void
-ps_document_set_property (GObject *object,
- guint prop_id,
- const GValue *value,
- GParamSpec *pspec)
-{
- switch (prop_id)
-
- {
- case PROP_TITLE:
- /* read only */
- break;
- }
-}
-
-static void
-ps_document_get_property (GObject *object,
- guint prop_id,
- GValue *value,
- GParamSpec *pspec)
-{
- PSDocument *ps = PS_DOCUMENT (object);
-
- switch (prop_id)
- {
- case PROP_TITLE:
- if (ps->doc) {
- g_value_set_string (value, ps->doc->title);
- } else {
- g_value_set_string (value, NULL);
- }
- break;
- }
-}
-
-static void
-ps_document_class_init(PSDocumentClass *klass)
-{
- GObjectClass *object_class;
-
- object_class = (GObjectClass *) klass;
- parent_class = g_type_class_peek_parent (klass);
- gs_class = klass;
-
- object_class->finalize = ps_document_finalize;
- object_class->get_property = ps_document_get_property;
- object_class->set_property = ps_document_set_property;
-
- klass->gs_atom = gdk_atom_intern ("GHOSTVIEW", FALSE);
- klass->next_atom = gdk_atom_intern ("NEXT", FALSE);
- klass->page_atom = gdk_atom_intern ("PAGE", FALSE);
- klass->string_atom = gdk_atom_intern ("STRING", FALSE);
-
- g_object_class_override_property (object_class, PROP_TITLE, "title");
-}
-
-static void
-push_pixbuf (PSDocument *gs)
-{
- GdkColormap *cmap;
- GdkPixbuf *pixbuf;
- int width, height;
-
- cmap = gdk_window_get_colormap (gs->pstarget);
- gdk_drawable_get_size (gs->bpixmap, &width, &height);
- pixbuf = gdk_pixbuf_get_from_drawable (NULL, gs->bpixmap, cmap,
- 0, 0, 0, 0,
- width, height);
- g_mutex_lock (pixbuf_mutex);
- current_pixbuf = pixbuf;
- g_cond_signal (pixbuf_cond);
- g_mutex_unlock (pixbuf_mutex);
-
-}
-
-static void
-interpreter_failed (PSDocument *gs, char *msg)
-{
- LOG ("Interpreter failed %s", msg);
-
- push_pixbuf (gs);
-
- stop_interpreter (gs);
-}
-
-static void
-ps_document_cleanup (PSDocument *gs)
-{
- g_return_if_fail (gs != NULL);
- g_return_if_fail (PS_IS_DOCUMENT (gs));
-
- LOG ("Cleanup\n");
-
- stop_interpreter (gs);
-
- if (gs->gs_psfile) {
- fclose (gs->gs_psfile);
- gs->gs_psfile = NULL;
- }
-
- if (gs->gs_filename) {
- g_free (gs->gs_filename);
- gs->gs_filename = NULL;
- }
-
- if (gs->doc) {
- psfree (gs->doc);
- gs->doc = NULL;
- }
-
- if (gs->gs_filename_unc) {
- unlink(gs->gs_filename_unc);
- g_free(gs->gs_filename_unc);
- gs->gs_filename_unc = NULL;
- }
-
- gs->loaded = FALSE;
-}
-
-static gboolean
-ps_document_widget_event (GtkWidget *widget, GdkEvent *event, gpointer data)
-{
- PSDocument *gs = (PSDocument *) data;
-
- if(event->type != GDK_CLIENT_EVENT)
- return FALSE;
-
- gs->message_window = event->client.data.l[0];
-
- if (event->client.message_type == gs_class->page_atom) {
- LOG ("GS rendered the document");
- gs->busy = FALSE;
-
- push_pixbuf (gs);
- }
-
- return TRUE;
-}
-
-static void
-ps_document_finalize (GObject * object)
-{
- PSDocument *gs;
-
- g_return_if_fail (object != NULL);
- g_return_if_fail (PS_IS_DOCUMENT (object));
-
- LOG ("Finalize");
-
- gs = PS_DOCUMENT (object);
-
- ps_document_cleanup (gs);
- stop_interpreter (gs);
-
- if(gs->input_buffer) {
- g_free(gs->input_buffer);
- gs->input_buffer = NULL;
- }
-
- (*G_OBJECT_CLASS (parent_class)->finalize) (object);
-}
-
-static void
-send_ps(PSDocument * gs, long begin, unsigned int len, gboolean close)
-{
- struct record_list *ps_new;
-
- if(gs->interpreter_input < 0) {
- g_critical("No pipe to gs: error in send_ps().");
- return;
- }
-
- ps_new = (struct record_list *) g_malloc(sizeof(struct record_list));
- ps_new->fp = gs->gs_psfile;
- ps_new->begin = begin;
- ps_new->len = len;
- ps_new->seek_needed = TRUE;
- ps_new->close = close;
- ps_new->next = NULL;
-
- if(gs->input_buffer == NULL) {
- gs->input_buffer = g_malloc(MAX_BUFSIZE);
- }
-
- if(gs->ps_input == NULL) {
- gs->input_buffer_ptr = gs->input_buffer;
- gs->bytes_left = len;
- gs->buffer_bytes_left = 0;
- gs->ps_input = ps_new;
- gs->interpreter_input_id =
- gdk_input_add(gs->interpreter_input, GDK_INPUT_WRITE, input, gs);
- }
- else {
- struct record_list *p = gs->ps_input;
- while(p->next != NULL) {
- p = p->next;
- }
- p->next = ps_new;
- }
-}
-
-static float
-get_xdpi (PSDocument *gs)
-{
- return 25.4 * gdk_screen_width() / gdk_screen_width_mm();
-}
-
-static float
-get_ydpi (PSDocument *gs)
-{
- return 25.4 * gdk_screen_height() / gdk_screen_height_mm();
-}
-
-static void
-setup_pixmap (PSDocument *gs, int page, double scale)
-{
- GdkGC *fill;
- GdkColor white = { 0, 0xFFFF, 0xFFFF, 0xFFFF }; /* pixel, r, g, b */
- GdkColormap *colormap;
- double width, height;
- int pixmap_width, pixmap_height;
-
- ev_document_get_page_size (EV_DOCUMENT (gs), page, &width, &height);
- pixmap_width = floor (width * scale);
- pixmap_height = floor (height * scale);
-
- if(gs->bpixmap) {
- int w, h;
-
- gdk_drawable_get_size (gs->bpixmap, &w, &h);
-
- if (pixmap_width != w || h != pixmap_height) {
- gdk_drawable_unref (gs->bpixmap);
- gs->bpixmap = NULL;
- stop_interpreter (gs);
- }
- }
-
- if (!gs->bpixmap) {
- LOG ("Create pixmap");
-
- fill = gdk_gc_new (gs->pstarget);
- colormap = gdk_drawable_get_colormap (gs->pstarget);
- gdk_color_alloc (colormap, &white);
- gdk_gc_set_foreground (fill, &white);
- gs->bpixmap = gdk_pixmap_new (gs->pstarget, pixmap_width,
- pixmap_height, -1);
- gdk_draw_rectangle (gs->bpixmap, fill, TRUE,
- 0, 0, pixmap_width, pixmap_height);
- }
-}
-
-#define DEFAULT_PAGE_SIZE 1
-
-static void
-get_page_box (PSDocument *gs, int page, int *urx, int *ury, int *llx, int *lly)
-{
- gint new_llx = 0;
- gint new_lly = 0;
- gint new_urx = 0;
- gint new_ury = 0;
- GtkGSPaperSize *papersizes = gtk_gs_defaults_get_paper_sizes();
- int new_pagesize = -1;
-
- g_return_if_fail(PS_IS_DOCUMENT(gs));
-
- if(new_pagesize == -1) {
- new_pagesize = DEFAULT_PAGE_SIZE;
- if(gs->doc) {
- /* If we have a document:
- We use -- the page size (if specified)
- or the doc. size (if specified)
- or the page bbox (if specified)
- or the bounding box
- */
- if((page >= 0) && (gs->doc->numpages > page) &&
- (gs->doc->pages) && (gs->doc->pages[page].size)) {
- new_pagesize = gs->doc->pages[page].size - gs->doc->size;
- }
- else if(gs->doc->default_page_size != NULL) {
- new_pagesize = gs->doc->default_page_size - gs->doc->size;
- }
- else if((page >= 0) &&
- (gs->doc->numpages > page) &&
- (gs->doc->pages) &&
- (gs->doc->pages[page].boundingbox[URX] >
- gs->doc->pages[page].boundingbox[LLX]) &&
- (gs->doc->pages[page].boundingbox[URY] >
- gs->doc->pages[page].boundingbox[LLY])) {
- new_pagesize = -1;
- }
- else if((gs->doc->boundingbox[URX] > gs->doc->boundingbox[LLX]) &&
- (gs->doc->boundingbox[URY] > gs->doc->boundingbox[LLY])) {
- new_pagesize = -1;
- }
- }
- }
-
- /* Compute bounding box */
- if(gs->doc && (gs->doc->epsf || new_pagesize == -1)) { /* epsf or bbox */
- if((page >= 0) &&
- (gs->doc->pages) &&
- (gs->doc->pages[page].boundingbox[URX] >
- gs->doc->pages[page].boundingbox[LLX])
- && (gs->doc->pages[page].boundingbox[URY] >
- gs->doc->pages[page].boundingbox[LLY])) {
- /* use page bbox */
- new_llx = gs->doc->pages[page].boundingbox[LLX];
- new_lly = gs->doc->pages[page].boundingbox[LLY];
- new_urx = gs->doc->pages[page].boundingbox[URX];
- new_ury = gs->doc->pages[page].boundingbox[URY];
- }
- else if((gs->doc->boundingbox[URX] > gs->doc->boundingbox[LLX]) &&
- (gs->doc->boundingbox[URY] > gs->doc->boundingbox[LLY])) {
- /* use doc bbox */
- new_llx = gs->doc->boundingbox[LLX];
- new_lly = gs->doc->boundingbox[LLY];
- new_urx = gs->doc->boundingbox[URX];
- new_ury = gs->doc->boundingbox[URY];
- }
- }
- else {
- if(new_pagesize < 0)
- new_pagesize = DEFAULT_PAGE_SIZE;
- new_llx = new_lly = 0;
- if(gs->doc && gs->doc->size &&
- (new_pagesize < gs->doc->numsizes)) {
- new_urx = gs->doc->size[new_pagesize].width;
- new_ury = gs->doc->size[new_pagesize].height;
- }
- else {
- new_urx = papersizes[new_pagesize].width;
- new_ury = papersizes[new_pagesize].height;
- }
- }
-
- if(new_urx <= new_llx)
- new_urx = papersizes[12].width;
- if(new_ury <= new_lly)
- new_ury = papersizes[12].height;
-
- *urx = new_urx;
- *ury = new_ury;
- *llx = new_llx;
- *lly = new_lly;
-}
-
-static int
-get_page_orientation (PSDocument *gs, int page)
-{
- int orientation;
-
- orientation = GTK_GS_ORIENTATION_NONE;
-
- if (gs->structured_doc) {
- orientation = gs->doc->pages[page].orientation;
- }
- if (orientation == GTK_GS_ORIENTATION_NONE) {
- orientation = gs->doc->default_page_orientation;
- }
- if (orientation == GTK_GS_ORIENTATION_NONE) {
- orientation = gs->doc->orientation;
- }
- if (orientation == GTK_GS_ORIENTATION_NONE) {
- orientation = GTK_GS_ORIENTATION_PORTRAIT;
- }
-
- return orientation;
-}
-
-static void
-setup_page (PSDocument *gs, int page, double scale)
-{
- char buf[1024];
- int urx, ury, llx, lly, orientation;
-#ifdef HAVE_LOCALE_H
- char *savelocale;
-#endif
-
- LOG ("Setup the page");
-
-#ifdef HAVE_LOCALE_H
- /* gs needs floating point parameters with '.' as decimal point
- * while some (european) locales use ',' instead, so we set the
- * locale for this snprintf to "C".
- */
- savelocale = setlocale (LC_NUMERIC, "C");
-#endif
- get_page_box (gs, page, &urx, &ury, &llx, &lly);
- orientation = get_page_orientation (gs, page);
-
- g_snprintf (buf, 1024, "%ld %d %d %d %d %d %f %f %d %d %d %d",
- 0L, orientation * 90, llx, lly, urx, ury,
- get_xdpi (gs) * scale,
- get_ydpi (gs) * scale,
- 0, 0, 0, 0);
- LOG ("GS property %s", buf);
-
-#ifdef HAVE_LOCALE_H
- setlocale(LC_NUMERIC, savelocale);
-#endif
- gdk_property_change (gs->pstarget, gs_class->gs_atom, gs_class->string_atom,
- 8, GDK_PROP_MODE_REPLACE, (guchar *)buf, strlen(buf));
- gdk_flush ();
-}
-
-static void
-close_pipe (int p[2])
-{
- if (p[0] != -1) {
- close (p[0]);
- }
- if (p[1] != -1) {
- close (p[1]);
- }
-}
-
-static gboolean
-is_interpreter_ready (PSDocument *gs)
-{
- return (gs->interpreter_pid != -1 && !gs->busy && gs->ps_input == NULL);
-}
-
-static void
-output(gpointer data, gint source, GdkInputCondition condition)
-{
- char buf[MAX_BUFSIZE + 1], *msg;
- guint bytes = 0;
- PSDocument *gs = PS_DOCUMENT(data);
-
- if(source == gs->interpreter_output) {
- bytes = read(gs->interpreter_output, buf, MAX_BUFSIZE);
- if(bytes == 0) { /* EOF occurred */
- close(gs->interpreter_output);
- gs->interpreter_output = -1;
- gdk_input_remove(gs->interpreter_output_id);
- return;
- }
- else if(bytes == -1) {
- /* trouble... */
- interpreter_failed(gs, NULL);
- return;
- }
- if(gs->interpreter_err == -1) {
- interpreter_failed(gs, NULL);
- }
- }
- else if(source == gs->interpreter_err) {
- bytes = read(gs->interpreter_err, buf, MAX_BUFSIZE);
- if(bytes == 0) { /* EOF occurred */
- close(gs->interpreter_err);
- gs->interpreter_err = -1;
- gdk_input_remove(gs->interpreter_error_id);
- return;
- }
- else if(bytes == -1) {
- /* trouble... */
- interpreter_failed(gs, NULL);
- return;
- }
- if(gs->interpreter_output == -1) {
- interpreter_failed(gs, NULL);
- }
- }
- if(bytes > 0) {
- buf[bytes] = '\0';
- msg = g_strdup(buf);
- interpreter_failed (gs, msg);
- }
-}
-
-static void
-catchPipe(int i)
-{
- broken_pipe = True;
-}
-
-static void
-input(gpointer data, gint source, GdkInputCondition condition)
-{
- PSDocument *gs = PS_DOCUMENT(data);
- int bytes_written;
- void (*oldsig) (int);
- oldsig = signal(SIGPIPE, catchPipe);
-
- LOG ("Input");
-
- do {
- if(gs->buffer_bytes_left == 0) {
- /* Get a new section if required */
- if(gs->ps_input && gs->bytes_left == 0) {
- struct record_list *ps_old = gs->ps_input;
- gs->ps_input = ps_old->next;
- if(ps_old->close && NULL != ps_old->fp)
- fclose(ps_old->fp);
- g_free((char *) ps_old);
- }
- /* Have to seek at the beginning of each section */
- if(gs->ps_input && gs->ps_input->seek_needed) {
- fseek(gs->ps_input->fp, gs->ps_input->begin, SEEK_SET);
- gs->ps_input->seek_needed = FALSE;
- gs->bytes_left = gs->ps_input->len;
- }
-
- if(gs->bytes_left > MAX_BUFSIZE) {
- gs->buffer_bytes_left =
- fread(gs->input_buffer, sizeof(char), MAX_BUFSIZE, gs->ps_input->fp);
- }
- else if(gs->bytes_left > 0) {
- gs->buffer_bytes_left =
- fread(gs->input_buffer,
- sizeof(char), gs->bytes_left, gs->ps_input->fp);
- }
- else {
- gs->buffer_bytes_left = 0;
- }
- if(gs->bytes_left > 0 && gs->buffer_bytes_left == 0) {
- interpreter_failed (gs, NULL); /* Error occurred */
- }
- gs->input_buffer_ptr = gs->input_buffer;
- gs->bytes_left -= gs->buffer_bytes_left;
- }
-
- if(gs->buffer_bytes_left > 0) {
- bytes_written = write(gs->interpreter_input,
- gs->input_buffer_ptr, gs->buffer_bytes_left);
-
- if(broken_pipe) {
- interpreter_failed (gs, g_strdup(_("Broken pipe.")));
- broken_pipe = FALSE;
- interpreter_failed (gs, NULL);
- }
- else if(bytes_written == -1) {
- if((errno != EWOULDBLOCK) && (errno != EAGAIN)) {
- interpreter_failed (gs, NULL); /* Something bad happened */
- }
- }
- else {
- gs->buffer_bytes_left -= bytes_written;
- gs->input_buffer_ptr += bytes_written;
- }
- }
- }
- while(gs->ps_input && gs->buffer_bytes_left == 0);
-
- signal(SIGPIPE, oldsig);
-
- if(gs->ps_input == NULL && gs->buffer_bytes_left == 0) {
- if(gs->interpreter_input_id != 0) {
- gdk_input_remove(gs->interpreter_input_id);
- gs->interpreter_input_id = 0;
- }
- }
-}
-
-static int
-start_interpreter (PSDocument *gs)
-{
- int std_in[2] = { -1, -1 }; /* pipe to interp stdin */
- int std_out[2]; /* pipe from interp stdout */
- int std_err[2]; /* pipe from interp stderr */
-
-#define NUM_ARGS 100
-#define NUM_GS_ARGS (NUM_ARGS - 20)
-#define NUM_ALPHA_ARGS 10
-
- char *argv[NUM_ARGS], *dir, *gv_env;
- char **gs_args, **alpha_args = NULL;
- int argc = 0, i;
-
- LOG ("Start the interpreter");
-
- if(!gs->gs_filename)
- return 0;
-
- stop_interpreter(gs);
-
- /* set up the args... */
- gs_args = g_strsplit (gtk_gs_defaults_get_interpreter_cmd (), " ", NUM_GS_ARGS);
- for(i = 0; i < NUM_GS_ARGS && gs_args[i]; i++, argc++) {
- argv[argc] = gs_args[i];
- }
-
- alpha_args = g_strsplit (ALPHA_PARAMS, " ", NUM_ALPHA_ARGS);
- for(i = 0; i < NUM_ALPHA_ARGS && alpha_args[i]; i++, argc++) {
- argv[argc] = alpha_args[i];
- }
-
- argv[argc++] = "-dNOPAUSE";
- argv[argc++] = "-dQUIET";
- argv[argc++] = "-dSAFER";
-
- /* set up the pipes */
- if (gs->send_filename_to_gs) {
- argv[argc++] = PS_DOCUMENT_GET_PS_FILE (gs);
- argv[argc++] = "-c";
- argv[argc++] = "quit";
- } else {
- argv[argc++] = "-";
- }
-
- argv[argc++] = NULL;
-
- if (!gs->reading_from_pipe && !gs->send_filename_to_gs) {
- if (pipe (std_in) == -1) {
- g_critical ("Unable to open pipe to Ghostscript.");
- return -1;
- }
- }
-
- if (pipe (std_out) == -1) {
- close_pipe (std_in);
- return -1;
- }
-
- if (pipe(std_err) == -1) {
- close_pipe (std_in);
- close_pipe (std_out);
- return -1;
- }
-
- gv_env = g_strdup_printf ("GHOSTVIEW=%ld %ld",
- gdk_x11_drawable_get_xid (gs->pstarget),
- gdk_x11_drawable_get_xid (gs->bpixmap));
- LOG ("Launching ghostview with env %s", gv_env);
-
- gs->busy = TRUE;
- gs->interpreter_pid = fork ();
- switch (gs->interpreter_pid) {
- case -1: /* error */
- close_pipe (std_in);
- close_pipe (std_out);
- close_pipe (std_err);
- return -2;
- break;
- case 0: /* child */
- close (std_out[0]);
- dup2 (std_out[1], 1);
- close (std_out[1]);
-
- close (std_err[0]);
- dup2 (std_err[1], 2);
- close (std_err[1]);
-
- if (!gs->reading_from_pipe) {
- if (gs->send_filename_to_gs) {
- int stdinfd;
- /* just in case gs tries to read from stdin */
- stdinfd = open("/dev/null", O_RDONLY);
- if (stdinfd != 0) {
- dup2(stdinfd, 0);
- close(stdinfd);
- }
- } else {
- close (std_in[1]);
- dup2 (std_in[0], 0);
- close (std_in[0]);
- }
- }
-
- putenv(gv_env);
-
- /* change to directory where the input file is. This helps
- * with postscript-files which include other files using
- * a relative path */
- dir = g_path_get_dirname (gs->gs_filename);
- chdir (dir);
- g_free (dir);
-
- execvp (argv[0], argv);
-
- /* Notify error */
- g_critical ("Unable to execute [%s]\n", argv[0]);
- g_strfreev (gs_args);
- g_free (gv_env);
- g_strfreev (alpha_args);
- _exit (1);
- break;
- default: /* parent */
- if (!gs->send_filename_to_gs && !gs->reading_from_pipe) {
- int result;
- close (std_in[0]);
- /* use non-blocking IO for pipe to ghostscript */
- result = fcntl (std_in[1], F_GETFL, 0);
- fcntl (std_in[1], F_SETFL, result | O_NONBLOCK);
- gs->interpreter_input = std_in[1];
- } else {
- gs->interpreter_input = -1;
- }
- close (std_out[1]);
-
- gs->interpreter_output = std_out[0];
- close (std_err[1]);
- gs->interpreter_err = std_err[0];
- gs->interpreter_output_id =
- gdk_input_add (std_out[0], GDK_INPUT_READ, output, gs);
- gs->interpreter_error_id =
- gdk_input_add (std_err[0], GDK_INPUT_READ, output, gs);
- break;
- }
-
- return TRUE;
-}
-
-static void
-stop_interpreter(PSDocument * gs)
-{
- if(gs->interpreter_pid > 0) {
- int status = 0;
- LOG ("Stop the interpreter");
- kill(gs->interpreter_pid, SIGTERM);
- while((wait(&status) == -1) && (errno == EINTR)) ;
- gs->interpreter_pid = -1;
- if(status == 1) {
- ps_document_cleanup(gs);
- gs->gs_status = _("Interpreter failed.");
- }
- }
-
- if(gs->interpreter_input >= 0) {
- close(gs->interpreter_input);
- gs->interpreter_input = -1;
- if(gs->interpreter_input_id != 0) {
- gdk_input_remove(gs->interpreter_input_id);
- gs->interpreter_input_id = 0;
- }
- while(gs->ps_input) {
- struct record_list *ps_old = gs->ps_input;
- gs->ps_input = gs->ps_input->next;
- if(ps_old->close && NULL != ps_old->fp)
- fclose(ps_old->fp);
- g_free((char *) ps_old);
- }
- }
-
- if(gs->interpreter_output >= 0) {
- close(gs->interpreter_output);
- gs->interpreter_output = -1;
- if(gs->interpreter_output_id) {
- gdk_input_remove(gs->interpreter_output_id);
- gs->interpreter_output_id = 0;
- }
- }
-
- if(gs->interpreter_err >= 0) {
- close(gs->interpreter_err);
- gs->interpreter_err = -1;
- if(gs->interpreter_error_id) {
- gdk_input_remove(gs->interpreter_error_id);
- gs->interpreter_error_id = 0;
- }
- }
-
- gs->busy = FALSE;
-}
-
-/* If file exists and is a regular file then return its length, else -1 */
-static gint
-file_length(const gchar * filename)
-{
- struct stat stat_rec;
-
- if(filename && (stat(filename, &stat_rec) == 0)
- && S_ISREG(stat_rec.st_mode))
- return stat_rec.st_size;
- else
- return -1;
-}
-
-/* Test if file exists, is a regular file and its length is > 0 */
-static gboolean
-file_readable(const char *filename)
-{
- return (file_length(filename) > 0);
-}
-
-/*
- * Decompress gs->gs_filename if necessary
- * Set gs->filename_unc to the name of the uncompressed file or NULL.
- * Error reporting via signal 'interpreter_message'
- * Return name of input file to use or NULL on error..
- */
-static gchar *
-check_filecompressed(PSDocument * gs)
-{
- FILE *file;
- gchar buf[1024];
- gchar *filename, *filename_unc, *filename_err, *cmdline;
- const gchar *cmd;
- int fd;
-
- cmd = NULL;
-
- if((file = fopen(gs->gs_filename, "r"))
- && (fread(buf, sizeof(gchar), 3, file) == 3)) {
- if((buf[0] == '\037') && ((buf[1] == '\235') || (buf[1] == '\213'))) {
- /* file is gzipped or compressed */
- cmd = gtk_gs_defaults_get_ungzip_cmd();
- }
- else if(strncmp(buf, "BZh", 3) == 0) {
- /* file is compressed with bzip2 */
- cmd = gtk_gs_defaults_get_unbzip2_cmd();
- }
- }
- if(NULL != file)
- fclose(file);
-
- if(!cmd)
- return gs->gs_filename;
-
- /* do the decompression */
- filename = g_shell_quote(gs->gs_filename);
- filename_unc = g_strconcat(g_get_tmp_dir(), "/ggvXXXXXX", NULL);
- if((fd = mkstemp(filename_unc)) < 0) {
- g_free(filename_unc);
- g_free(filename);
- return NULL;
- }
- close(fd);
- filename_err = g_strconcat(g_get_tmp_dir(), "/ggvXXXXXX", NULL);
- if((fd = mkstemp(filename_err)) < 0) {
- g_free(filename_err);
- g_free(filename_unc);
- g_free(filename);
- return NULL;
- }
- close(fd);
- cmdline = g_strdup_printf("%s %s >%s 2>%s", cmd,
- filename, filename_unc, filename_err);
- if((system(cmdline) == 0)
- && file_readable(filename_unc)
- && (file_length(filename_err) == 0)) {
- /* sucessfully uncompressed file */
- gs->gs_filename_unc = filename_unc;
- }
- else {
- /* report error */
- g_snprintf(buf, 1024, _("Error while decompressing file %s:\n"),
- gs->gs_filename);
- interpreter_failed (gs, buf);
- unlink(filename_unc);
- g_free(filename_unc);
- filename_unc = NULL;
- }
- unlink(filename_err);
- g_free(filename_err);
- g_free(cmdline);
- g_free(filename);
- return filename_unc;
-}
-
-static gint
-ps_document_enable_interpreter(PSDocument * gs)
-{
- g_return_val_if_fail(gs != NULL, FALSE);
- g_return_val_if_fail(PS_IS_DOCUMENT(gs), FALSE);
-
- if(!gs->gs_filename)
- return 0;
-
- return start_interpreter(gs);
-}
-
-/* publicly accessible functions */
-
-GType
-ps_document_get_type(void)
-{
- static GType gs_type = 0;
- if(!gs_type) {
- GTypeInfo gs_info = {
- sizeof(PSDocumentClass),
- (GBaseInitFunc) NULL,
- (GBaseFinalizeFunc) NULL,
- (GClassInitFunc) ps_document_class_init,
- (GClassFinalizeFunc) NULL,
- NULL, /* class_data */
- sizeof(PSDocument),
- 0, /* n_preallocs */
- (GInstanceInitFunc) ps_document_init
- };
-
- static const GInterfaceInfo document_info =
- {
- (GInterfaceInitFunc) ps_document_document_iface_init,
- NULL,
- NULL
- };
-
- static const GInterfaceInfo ps_exporter_info =
- {
- (GInterfaceInitFunc) ps_document_ps_exporter_iface_init,
- NULL,
- NULL
- };
-
- gs_type = g_type_register_static(G_TYPE_OBJECT,
- "PSDocument", &gs_info, 0);
-
- g_type_add_interface_static (gs_type,
- EV_TYPE_DOCUMENT,
- &document_info);
- g_type_add_interface_static (gs_type,
- EV_TYPE_PS_EXPORTER,
- &ps_exporter_info);
- }
- return gs_type;
-
-
-}
-
-static gboolean
-document_load(PSDocument * gs, const gchar * fname)
-{
- g_return_val_if_fail(gs != NULL, FALSE);
- g_return_val_if_fail(PS_IS_DOCUMENT(gs), FALSE);
-
- LOG ("Load the document");
-
- /* clean up previous document */
- ps_document_cleanup(gs);
-
- if(fname == NULL) {
- gs->gs_status = "";
- return FALSE;
- }
-
- /* prepare this document */
- gs->structured_doc = FALSE;
- gs->send_filename_to_gs = TRUE;
- gs->loaded = FALSE;
- if(*fname == '/') {
- /* an absolute path */
- gs->gs_filename = g_strdup(fname);
- }
- else {
- /* path relative to our cwd: make it absolute */
- gchar *cwd = g_get_current_dir();
- gs->gs_filename = g_strconcat(cwd, "/", fname, NULL);
- g_free(cwd);
- }
-
- if((gs->reading_from_pipe = (strcmp(fname, "-") == 0))) {
- gs->send_filename_to_gs = FALSE;
- }
- else {
- /*
- * We need to make sure that the file is loadable/exists!
- * otherwise we want to exit without loading new stuff...
- */
- gchar *filename = NULL;
-
- if(!file_readable(fname)) {
- gchar buf[1024];
- g_snprintf(buf, 1024, _("Cannot open file %s.\n"), fname);
- interpreter_failed (gs, buf);
- gs->gs_status = _("File is not readable.");
- }
- else {
- filename = check_filecompressed(gs);
- }
-
- if(!filename || (gs->gs_psfile = fopen(filename, "r")) == NULL) {
- interpreter_failed (gs, NULL);
- ps_document_cleanup(gs);
- return FALSE;
- }
-
- /* we grab the vital statistics!!! */
- gs->doc = psscan(gs->gs_psfile, TRUE, filename);
-
- g_object_notify (G_OBJECT (gs), "title");
-
- if(gs->doc == NULL) {
- /* File does not seem to be a Postscript one */
- gchar buf[1024];
- g_snprintf(buf, 1024, _("Error while scanning file %s\n"), fname);
- interpreter_failed (gs, buf);
- ps_document_cleanup(gs);
- gs->gs_status = _("The file is not a PostScript document.");
- return FALSE;
- }
-
- if((!gs->doc->epsf && gs->doc->numpages > 0) ||
- (gs->doc->epsf && gs->doc->numpages > 1)) {
- gs->structured_doc = TRUE;
- gs->send_filename_to_gs = FALSE;
- }
- }
- gs->loaded = TRUE;
-
- gs->gs_status = _("Document loaded.");
-
- return gs->loaded;
-}
-
-
-static gboolean
-ps_document_next_page (PSDocument *gs)
-{
- XEvent event;
-
- LOG ("Make ghostscript render next page");
-
- g_return_val_if_fail (PS_IS_DOCUMENT(gs), FALSE);
- g_return_val_if_fail (gs->interpreter_pid != 0, FALSE);
- g_return_val_if_fail (gs->busy != TRUE, FALSE);
-
- gs->busy = TRUE;
-
- event.xclient.type = ClientMessage;
- event.xclient.display = gdk_display;
- event.xclient.window = gs->message_window;
- event.xclient.message_type = gdk_x11_atom_to_xatom(gs_class->next_atom);
- event.xclient.format = 32;
-
- gdk_error_trap_push ();
- XSendEvent (gdk_display, gs->message_window, FALSE, 0, &event);
- gdk_flush ();
- gdk_error_trap_pop ();
-
- return TRUE;
-}
-
-static gboolean
-render_page (PSDocument *gs, int page)
-{
- g_return_val_if_fail(gs != NULL, FALSE);
- g_return_val_if_fail(PS_IS_DOCUMENT(gs), FALSE);
-
- if(!gs->gs_filename) {
- return FALSE;
- }
-
- if (gs->structured_doc && gs->doc) {
- LOG ("It's a structured document, let's send one page to gs");
-
- if (is_interpreter_ready (gs)) {
- ps_document_next_page (gs);
- } else {
- ps_document_enable_interpreter (gs);
- send_ps (gs, gs->doc->beginprolog, gs->doc->lenprolog, FALSE);
- send_ps (gs, gs->doc->beginsetup, gs->doc->lensetup, FALSE);
- }
-
- send_ps (gs, gs->doc->pages[page].begin,
- gs->doc->pages[page].len, FALSE);
- } else {
- /* Unstructured document
- *
- * In the case of non structured documents,
- * GS read the PS from the actual file (via command
- * line. Hence, ggv only send a signal next page.
- * If ghostview is not running it is usually because
- * the last page of the file was displayed. In that
- * case, ggv restarts GS again and the first page is displayed.
- */
-
- LOG ("It's an unstructured document, gs will just read the file");
-
- if (!is_interpreter_ready (gs)) {
- ps_document_enable_interpreter(gs);
- }
- ps_document_next_page(gs);
- }
-
- return TRUE;
-}
-
-static gboolean
-ps_document_load (EvDocument *document,
- const char *uri,
- GError **error)
-{
- gboolean result;
- char *filename;
-
- filename = g_filename_from_uri (uri, NULL, error);
- if (!filename)
- return FALSE;
-
- result = document_load (PS_DOCUMENT (document), filename);
- if (!result) {
- g_set_error (error, G_FILE_ERROR,
- G_FILE_ERROR_FAILED,
- "Failed to load document '%s'\n",
- uri);
- }
-
- g_free (filename);
-
- return result;
-}
-
-static gboolean
-save_page_list (PSDocument *document, int *page_list, const char *filename)
-{
- gboolean result = TRUE;
- GtkGSDocSink *sink = gtk_gs_doc_sink_new ();
- FILE *f;
- gchar *buf;
-
- pscopydoc (sink, document->gs_filename, document->doc, page_list);
-
- buf = gtk_gs_doc_sink_get_buffer (sink);
-
- f = fopen (filename, "w");
- if (f) {
- fputs (buf, f);
- fclose (f);
- } else {
- result = FALSE;
- }
-
- g_free (buf);
- gtk_gs_doc_sink_free (sink);
- g_free (sink);
-
- return result;
-}
-
-static gboolean
-ps_document_save (EvDocument *document,
- const char *uri,
- GError **error)
-{
- PSDocument *ps = PS_DOCUMENT (document);
- int *page_list;
- gboolean result;
- int i;
- char *filename;
-
- filename = g_filename_from_uri (uri, NULL, error);
- if (!filename)
- return FALSE;
-
- page_list = g_new0 (int, ps->doc->numpages);
- for (i = 0; i < ps->doc->numpages; i++) {
- page_list[i] = 1;
- }
-
- result = save_page_list (ps, page_list, filename);
-
- g_free (page_list);
- g_free (filename);
-
- return result;
-}
-
-static int
-ps_document_get_n_pages (EvDocument *document)
-{
- PSDocument *ps = PS_DOCUMENT (document);
-
- g_return_val_if_fail (ps != NULL, -1);
-
- if (!ps->gs_filename || !ps->doc) {
- return -1;
- }
-
- return ps->structured_doc ? ps->doc->numpages : 1;
-}
-
-static void
-ps_document_get_page_size (EvDocument *document,
- int page,
- double *width,
- double *height)
-{
- PSDocument *gs = PS_DOCUMENT (document);
- int w, h;
- int urx, ury, llx, lly, orientation;
-
- get_page_box (PS_DOCUMENT (document), page, &urx, &ury, &llx, &lly);
- orientation = get_page_orientation (PS_DOCUMENT (document), page);
-
- switch (orientation) {
- case GTK_GS_ORIENTATION_PORTRAIT:
- case GTK_GS_ORIENTATION_UPSIDEDOWN:
- w = (urx - llx) / 72.0 * get_xdpi (gs) + 0.5;
- h = (ury - lly) / 72.0 * get_ydpi (gs) + 0.5;
- break;
- case GTK_GS_ORIENTATION_LANDSCAPE:
- case GTK_GS_ORIENTATION_SEASCAPE:
- w = (ury - lly) / 72.0 * get_xdpi (gs) + 0.5;
- h = (urx - llx) / 72.0 * get_ydpi (gs) + 0.5;
- break;
- default:
- w = h = 0;
- g_assert_not_reached ();
- break;
- }
-
- if (width) {
- *width = w;
- }
-
- if (height) {
- *height = h;
- }
-}
-
-static gboolean
-ps_document_can_get_text (EvDocument *document)
-{
- return FALSE;
-}
-
-static gboolean
-render_pixbuf_idle (PSRenderJob *job)
-{
- PSDocument *gs = job->document;
-
- if (gs->pstarget == NULL) {
- GtkWidget *widget;
-
- widget = gtk_window_new (GTK_WINDOW_POPUP);
- gtk_widget_realize (widget);
- gs->pstarget = widget->window;
-
- g_assert (gs->pstarget != NULL);
-
- g_signal_connect (widget, "event",
- G_CALLBACK (ps_document_widget_event),
- gs);
- }
-
- setup_pixmap (gs, job->page, job->scale);
- setup_page (gs, job->page, job->scale);
-
- render_page (gs, job->page);
-
- return FALSE;
-}
-
-static GdkPixbuf *
-ps_document_render_pixbuf (EvDocument *document, int page, double scale)
-{
- GdkPixbuf *pixbuf;
- PSRenderJob job;
-
- job.page = page;
- job.scale = scale;
- job.document = PS_DOCUMENT (document);
- g_idle_add ((GSourceFunc)render_pixbuf_idle, &job);
-
- g_mutex_lock (pixbuf_mutex);
- while (!current_pixbuf)
- g_cond_wait (pixbuf_cond, pixbuf_mutex);
- pixbuf = current_pixbuf;
- current_pixbuf = NULL;
- g_mutex_unlock (pixbuf_mutex);
-
- LOG ("Pixbuf rendered %p\n", pixbuf);
-
- return pixbuf;
-}
-
-static void
-ps_document_document_iface_init (EvDocumentIface *iface)
-{
- iface->load = ps_document_load;
- iface->save = ps_document_save;
- iface->can_get_text = ps_document_can_get_text;
- iface->get_n_pages = ps_document_get_n_pages;
- iface->get_page_size = ps_document_get_page_size;
- iface->render_pixbuf = ps_document_render_pixbuf;
-}
-
-static void
-ps_document_ps_export_begin (EvPSExporter *exporter, const char *filename)
-{
- PSDocument *document = PS_DOCUMENT (exporter);
-
- g_free (document->ps_export_pagelist);
-
- document->ps_export_pagelist = g_new0 (int, document->doc->numpages);
- document->ps_export_filename = g_strdup (filename);
-}
-
-static void
-ps_document_ps_export_do_page (EvPSExporter *exporter, int page)
-{
- PSDocument *document = PS_DOCUMENT (exporter);
-
- document->ps_export_pagelist[page] = 1;
-}
-
-static void
-ps_document_ps_export_end (EvPSExporter *exporter)
-{
- PSDocument *document = PS_DOCUMENT (exporter);
-
- save_page_list (document, document->ps_export_pagelist,
- document->ps_export_filename);
-
- g_free (document->ps_export_pagelist);
- g_free (document->ps_export_filename);
- document->ps_export_pagelist = NULL;
- document->ps_export_filename = NULL;
-}
-
-static void
-ps_document_ps_exporter_iface_init (EvPSExporterIface *iface)
-{
- iface->begin = ps_document_ps_export_begin;
- iface->do_page = ps_document_ps_export_do_page;
- iface->end = ps_document_ps_export_end;
-}
https://www.fi.muni.cz/~kas/git / evince.git / blobdiff