/* Ghostscript widget for GTK/GNOME
- *
+ *
* Copyright (C) 1998 - 2005 the Free Software Foundation
- *
- * Authors: Jonathan Blandford, Jaka Mocnik
- *
+ *
+ * Authors: Jonathan Blandford, Jaka Mocnik, Carlos Garcia Campos
+ *
* Based on code by: Federico Mena (Quartic), Szekeres Istvan (Pista)
*
* This library is free software; you can redistribute it and/or
* 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/gstdio.h>
#include <glib/gi18n.h>
-#include <X11/Intrinsic.h>
-#include <unistd.h>
-#include <fcntl.h>
+#include <gdk/gdkpixbuf.h>
+#include <string.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 "ps-interpreter.h"
+#include "ps.h"
+#include "gstypes.h"
#include "gsdefaults.h"
#include "ev-file-exporter.h"
#include "ev-async-renderer.h"
+#include "ev-document-thumbnails.h"
+#include "ev-document-misc.h"
-#define MAX_BUFSIZE 1024
+struct _PSDocument {
+ GObject object;
-#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)
+ gchar *filename;
+ struct document *doc;
+ gboolean structured_doc;
-/* 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;
+ PSInterpreter *gs;
+
+ /* Document Thumbnails */
+ PSInterpreter *thumbs_gs;
+ GdkPixbuf *thumbnail;
+ EvRenderContext *thumbs_rc;
+ GMutex *thumbs_mutex;
+ GCond *thumbs_cond;
+
+ /* File exporter */
+ gint *ps_export_pagelist;
+ gchar *ps_export_filename;
};
-static gboolean broken_pipe = FALSE;
-
-/* Forward declarations */
-static void ps_document_init (PSDocument *gs);
-static void ps_document_class_init (PSDocumentClass *klass);
-static void send_ps (PSDocument *gs,
- long begin,
- unsigned int len,
- gboolean close);
-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_file_exporter_iface_init (EvFileExporterIface *iface);
-static void ps_async_renderer_iface_init (EvAsyncRendererIface *iface);
+struct _PSDocumentClass {
+ GObjectClass parent_class;
+};
+
+static void ps_document_document_iface_init (EvDocumentIface *iface);
+static void ps_document_file_exporter_iface_init (EvFileExporterIface *iface);
+static void ps_async_renderer_iface_init (EvAsyncRendererIface *iface);
+static void ps_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface);
+
+static void ps_interpreter_page_rendered (PSInterpreter *gs,
+ GdkPixbuf *pixbuf,
+ PSDocument *ps_document);
G_DEFINE_TYPE_WITH_CODE (PSDocument, ps_document, G_TYPE_OBJECT,
{
G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT,
ps_document_document_iface_init);
+ G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_THUMBNAILS,
+ ps_document_document_thumbnails_iface_init);
G_IMPLEMENT_INTERFACE (EV_TYPE_FILE_EXPORTER,
ps_document_file_exporter_iface_init);
G_IMPLEMENT_INTERFACE (EV_TYPE_ASYNC_RENDERER,
ps_async_renderer_iface_init);
});
-static GObjectClass *parent_class = NULL;
-static PSDocumentClass *gs_class = NULL;
-
+/* PSDocument */
static void
-ps_document_init (PSDocument *gs)
+ps_document_init (PSDocument *ps_document)
{
- 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->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;
}
static void
ps_document_dispose (GObject *object)
{
- PSDocument *gs = PS_DOCUMENT (object);
-
- g_return_if_fail (gs != NULL);
-
- 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;
- }
-
- if (gs->bpixmap) {
- gdk_drawable_unref (gs->bpixmap);
- }
-
- if(gs->input_buffer) {
- g_free(gs->input_buffer);
- gs->input_buffer = NULL;
- }
-
- if (gs->target_window) {
- gtk_widget_destroy (gs->target_window);
- gs->target_window = NULL;
- gs->pstarget = NULL;
- }
-
- stop_interpreter (gs);
-
- G_OBJECT_CLASS (parent_class)->dispose (object);
-}
-
-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->dispose = ps_document_dispose;
-
- 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);
-}
-
-static void
-push_pixbuf (PSDocument *gs)
-{
- GdkColormap *cmap;
- GdkPixbuf *pixbuf;
- int width, height;
-
- if (gs->pstarget == NULL)
- return;
-
- 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_signal_emit_by_name (gs, "render_finished", pixbuf);
- g_object_unref (pixbuf);
-}
-
-static void
-interpreter_failed (PSDocument *gs, char *msg)
-{
- push_pixbuf (gs);
-
- stop_interpreter (gs);
-}
-
-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];
+ PSDocument *ps_document = PS_DOCUMENT (object);
- if (event->client.message_type == gs_class->page_atom) {
- gs->busy = FALSE;
-
- push_pixbuf (gs);
+ if (ps_document->gs) {
+ g_object_unref (ps_document->gs);
+ ps_document->gs = NULL;
}
- return TRUE;
-}
-
-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;
+ if (ps_document->thumbs_gs) {
+ g_object_unref (ps_document->thumbs_gs);
+ ps_document->thumbs_gs = NULL;
}
-
- ps_new = g_new0 (struct record_list, 1);
- 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 void
-setup_pixmap (PSDocument *gs, int page, double scale, int rotation)
-{
- GdkGC *fill;
- GdkColor white = { 0, 0xFFFF, 0xFFFF, 0xFFFF }; /* pixel, r, g, b */
- GdkColormap *colormap;
- double width, height;
- int pixmap_width, pixmap_height;
- if (gs->pstarget == NULL)
- return;
-
- ev_document_get_page_size (EV_DOCUMENT (gs), page, &width, &height);
-
- if (rotation == 90 || rotation == 270) {
- pixmap_height = width * scale + 0.5;
- pixmap_width = height * scale + 0.5;
- } else {
- pixmap_width = width * scale + 0.5;
- pixmap_height = height * scale + 0.5;
+ if (ps_document->filename) {
+ g_free (ps_document->filename);
+ ps_document->filename = NULL;
}
- 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 (ps_document->doc) {
+ psfree (ps_document->doc);
+ ps_document->doc = NULL;
}
- if (!gs->bpixmap) {
-
- 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;
- }
- }
+ if (ps_document->thumbnail) {
+ g_object_unref (ps_document->thumbnail);
+ ps_document->thumbnail = NULL;
}
- /* 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 (ps_document->thumbs_mutex) {
+ g_mutex_free (ps_document->thumbs_mutex);
+ ps_document->thumbs_mutex = NULL;
}
-
- 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 void
-setup_page (PSDocument *gs, int page, double scale, int rotation)
-{
- gchar *buf;
- char scaled_dpi[G_ASCII_DTOSTR_BUF_SIZE];
- int urx, ury, llx, lly;
-
- get_page_box (gs, page, &urx, &ury, &llx, &lly);
- g_ascii_dtostr (scaled_dpi, G_ASCII_DTOSTR_BUF_SIZE, 72.0 * scale);
-
- buf = g_strdup_printf ("%ld %d %d %d %d %d %s %s %d %d %d %d",
- 0L, rotation, llx, lly, urx, ury,
- scaled_dpi, scaled_dpi,
- 0, 0, 0, 0);
-
- gdk_property_change (gs->pstarget, gs_class->gs_atom, gs_class->string_atom,
- 8, GDK_PROP_MODE_REPLACE, (guchar *)buf, strlen(buf));
- g_free (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];
- 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';
- printf ("%s", buf);
- }
-}
-
-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);
-
- 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 (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, *gs_path;
- char **gs_args, **alpha_args = NULL;
- char **gv_env_vars = NULL;
- int argc = 0, i;
-
- if(!gs->gs_filename)
- return 0;
-
- stop_interpreter(gs);
-
- /* set up the args... */
- gs_path = g_find_program_in_path ("gs");
- gs_args = g_strsplit (gs_path, " ", NUM_GS_ARGS);
- g_free (gs_path);
- 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 (ps_document->thumbs_cond) {
+ g_cond_free (ps_document->thumbs_cond);
+ ps_document->thumbs_cond = NULL;
}
- if (pipe(std_err) == -1) {
- close_pipe (std_in);
- close_pipe (std_out);
- return -1;
- }
-
- gv_env = g_strdup_printf ("GHOSTVIEW=%ld %ld;DISPLAY=%s",
- gdk_x11_drawable_get_xid (gs->pstarget),
- gdk_x11_drawable_get_xid (gs->bpixmap),
- gdk_display_get_name (gdk_drawable_get_display (gs->pstarget)));
-
- 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]);
- }
- }
-
- gv_env_vars = g_strsplit (gv_env, ";", -1);
- g_free (gv_env);
- for (i = 0; gv_env_vars[i]; i++) {
- putenv (gv_env_vars[i]);
- }
-
- /* 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_strfreev (alpha_args);
- g_strfreev (gv_env_vars);
- _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);
-
- g_free (gv_env);
- g_free (gs_args);
- g_free (alpha_args);
- break;
+ if (ps_document->thumbs_rc) {
+ g_object_unref (ps_document->thumbs_rc);
+ ps_document->thumbs_rc = NULL;
}
- return TRUE;
+ G_OBJECT_CLASS (ps_document_parent_class)->dispose (object);
}
static void
-stop_interpreter(PSDocument * gs)
+ps_document_class_init (PSDocumentClass *klass)
{
- if (gs->interpreter_pid > 0) {
- int status = 0;
- kill (gs->interpreter_pid, SIGTERM);
- while ((wait(&status) == -1) && (errno == EINTR));
- gs->interpreter_pid = -1;
- if (status == 1) {
- 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 (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;
-}
+ GObjectClass *object_class;
-/* 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;
+ object_class = G_OBJECT_CLASS (klass);
- if (filename && (stat (filename, &stat_rec) == 0) && S_ISREG (stat_rec.st_mode))
- return stat_rec.st_size;
- else
- return -1;
+ object_class->dispose = ps_document_dispose;
}
-/* Test if file exists, is a regular file and its length is > 0 */
+/* EvDocumentIface */
static gboolean
-file_readable(const char *filename)
+document_load (PSDocument *ps_document, const gchar *fname, GError **error)
{
- 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 (), "/evinceXXXXXX", NULL);
- if ((fd = mkstemp (filename_unc)) < 0) {
- g_free (filename_unc);
- g_free (filename);
- return NULL;
- }
- close (fd);
+ FILE *fd;
+
+ ps_document->filename = g_strdup (fname);
- filename_err = g_strconcat (g_get_tmp_dir (), "/evinceXXXXXX", 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 {
+ /*
+ * We need to make sure that the file is loadable/exists!
+ * otherwise we want to exit without loading new stuff...
+ */
+ if (!g_file_test (fname, G_FILE_TEST_IS_REGULAR)) {
gchar *filename_dsp;
- gchar *msg;
- /* report error */
- filename_dsp = g_filename_display_name (gs->gs_filename);
- msg = g_strdup_printf (_("Error while decompressing file “%s”:\n"), filename_dsp);
+ filename_dsp = g_filename_display_name (fname);
+ g_set_error (error,
+ G_FILE_ERROR,
+ G_FILE_ERROR_NOENT,
+ _("Cannot open file “%s”.\n"), /* FIXME: remove \n after freeze */
+ filename_dsp);
g_free (filename_dsp);
- interpreter_failed (gs, msg);
- g_free (msg);
- 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 (PS_IS_DOCUMENT (gs), FALSE);
-
- if (!gs->gs_filename)
- return 0;
-
- return start_interpreter (gs);
-}
-
-static gboolean
-document_load (PSDocument *gs, const gchar *fname)
-{
- g_return_val_if_fail (PS_IS_DOCUMENT(gs), FALSE);
-
- if (fname == NULL) {
- gs->gs_status = "";
return FALSE;
}
- /* prepare this document */
- gs->structured_doc = FALSE;
- gs->send_filename_to_gs = TRUE;
- gs->gs_filename = g_strdup (fname);
-
- 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 *filename_dsp;
- gchar *msg;
-
- filename_dsp = g_filename_display_name (fname);
- msg = g_strdup_printf (_("Cannot open file “%s”.\n"), filename_dsp);
- g_free (filename_dsp);
-
- interpreter_failed (gs, msg);
- g_free (msg);
- 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);
- return FALSE;
- }
-
- /* we grab the vital statistics!!! */
- gs->doc = psscan(gs->gs_psfile, TRUE, filename);
-
- 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->gs_status = _("Document loaded.");
-
- return TRUE;
-}
-
-static gboolean
-ps_document_next_page (PSDocument *gs)
-{
- XEvent event;
- GdkScreen *screen;
- GdkDisplay *display;
- Display *dpy;
-
- 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;
-
- screen = gtk_window_get_screen (GTK_WINDOW (gs->target_window));
- display = gdk_screen_get_display (screen);
- dpy = gdk_x11_display_get_xdisplay (display);
-
- event.xclient.type = ClientMessage;
- event.xclient.display = dpy;
- event.xclient.window = gs->message_window;
- event.xclient.message_type =
- gdk_x11_atom_to_xatom_for_display (display,
- gs_class->next_atom);
- event.xclient.format = 32;
-
- gdk_error_trap_push ();
- XSendEvent (dpy, 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 ((fd = fopen (ps_document->filename, "r")) == NULL) {
+ gchar *filename_dsp;
- if(!gs->gs_filename) {
+ filename_dsp = g_filename_display_name (fname);
+ g_set_error (error,
+ G_FILE_ERROR,
+ G_FILE_ERROR_NOENT,
+ _("Cannot open file “%s”.\n"), /* FIXME: remove \n after freeze */
+ filename_dsp);
+ g_free (filename_dsp);
+
return FALSE;
}
+
+ /* we grab the vital statistics!!! */
+ ps_document->doc = psscan (fd, TRUE, ps_document->filename);
+ fclose (fd);
+ if (!ps_document->doc)
+ return FALSE;
- if (gs->structured_doc && gs->doc) {
-
- 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.
- */
-
- if (!is_interpreter_ready (gs)) {
- ps_document_enable_interpreter(gs);
- }
- ps_document_next_page(gs);
- }
+ ps_document->structured_doc =
+ ((!ps_document->doc->epsf && ps_document->doc->numpages > 0) ||
+ (ps_document->doc->epsf && ps_document->doc->numpages > 1));
+ ps_document->gs = ps_interpreter_new (ps_document->filename,
+ ps_document->doc);
+ g_signal_connect (G_OBJECT (ps_document->gs), "page_rendered",
+ G_CALLBACK (ps_interpreter_page_rendered),
+ (gpointer) ps_document);
+
return TRUE;
}
gs_path = g_find_program_in_path ("gs");
if (!gs_path) {
- gchar *filename_dsp;
- filename_dsp = g_filename_display_name (filename);
- g_set_error(error,
- G_FILE_ERROR,
- G_FILE_ERROR_NOENT,
- _("Failed to load document “%s”. Ghostscript interpreter was not found in path"),
- filename);
- g_free (filename_dsp);
- result = FALSE;
- } else {
- result = document_load (PS_DOCUMENT (document), filename);
- if (!result) {
- gchar *filename_dsp;
- filename_dsp = g_filename_display_name (filename);
-
- g_set_error (error, G_FILE_ERROR,
- G_FILE_ERROR_FAILED,
- _("Failed to load document “%s”"),
- filename_dsp);
- g_free (filename_dsp);
- }
- g_free (gs_path);
+ gchar *filename_dsp;
+
+ filename_dsp = g_filename_display_name (filename);
+ g_set_error (error,
+ G_FILE_ERROR,
+ G_FILE_ERROR_NOENT,
+ _("Failed to load document “%s”. Ghostscript interpreter was not found in path"),
+ filename);
+ g_free (filename_dsp);
+ g_free (filename);
+
+ return FALSE;
+ }
+ g_free (gs_path);
+
+ result = document_load (PS_DOCUMENT (document), filename, error);
+ if (!result && !(*error)) {
+ gchar *filename_dsp;
+
+ filename_dsp = g_filename_display_name (filename);
+ g_set_error (error,
+ G_FILE_ERROR,
+ G_FILE_ERROR_FAILED,
+ _("Failed to load document “%s”"),
+ filename_dsp);
+ g_free (filename_dsp);
}
+
g_free (filename);
return result;
FILE *f, *src_file;
gchar *buf;
- src_file = fopen (PS_DOCUMENT_GET_PS_FILE(document), "r");
+ src_file = fopen (document->filename, "r");
if (src_file) {
struct stat stat_rec;
- if (stat (PS_DOCUMENT_GET_PS_FILE(document), &stat_rec) == 0) {
+ if (stat (document->filename, &stat_rec) == 0) {
pscopy (src_file, sink, 0, stat_rec.st_size - 1);
}
FILE *f;
gchar *buf;
- pscopydoc (sink, PS_DOCUMENT_GET_PS_FILE(document),
+ pscopydoc (sink, document->filename,
document->doc, page_list);
buf = gtk_gs_doc_sink_get_buffer (sink);
}
static int
-ps_document_get_n_pages (EvDocument *document)
+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) {
+ if (!ps->filename || !ps->doc) {
return -1;
}
return ps->structured_doc ? ps->doc->numpages : 1;
}
+static gint
+ps_document_get_page_rotation (PSDocument *ps_document,
+ int page)
+{
+ gint rotation = GTK_GS_ORIENTATION_NONE;
+
+ g_assert (ps_document->doc != NULL);
+
+ if (ps_document->structured_doc) {
+ if (ps_document->doc->pages[page].orientation != GTK_GS_ORIENTATION_NONE)
+ rotation = ps_document->doc->pages[page].orientation;
+ else
+ rotation = ps_document->doc->default_page_orientation;
+ }
+
+ if (rotation == GTK_GS_ORIENTATION_NONE)
+ rotation = ps_document->doc->orientation;
+
+ if (rotation == GTK_GS_ORIENTATION_NONE)
+ rotation = GTK_GS_ORIENTATION_PORTRAIT;
+
+ return rotation;
+}
+
static void
-ps_document_get_page_size (EvDocument *document,
- int page,
- double *width,
- double *height)
+ps_document_get_page_size (EvDocument *document,
+ int page,
+ double *width,
+ double *height)
{
- PSDocument *gs = PS_DOCUMENT (document);
+ PSDocument *ps_document = PS_DOCUMENT (document);
int urx, ury, llx, lly;
+ gdouble pwidth, pheight;
+ gdouble page_width, page_height;
+ gint rotate;
+
+ psgetpagebox (ps_document->doc, page, &urx, &ury, &llx, &lly);
- get_page_box (gs, page, &urx, &ury, &llx, &lly);
+ pwidth = (urx - llx) + 0.5;
+ pheight = (ury - lly) + 0.5;
+ rotate = ps_document_get_page_rotation (ps_document, page);
+ if (rotate == 90 || rotate == 270) {
+ page_height = pwidth;
+ page_width = pheight;
+ } else {
+ page_width = pwidth;
+ page_height = pheight;
+ }
+
if (width) {
- *width = (urx - llx) + 0.5;
+ *width = page_width;
}
if (height) {
- *height = (ury - lly) + 0.5;
+ *height = page_height;
}
}
return FALSE;
}
-static void
-ps_async_renderer_render_pixbuf (EvAsyncRenderer *renderer, int page, double scale, int rotation)
-{
- PSDocument *gs = PS_DOCUMENT (renderer);
-
- if (gs->pstarget == NULL) {
- gs->target_window = gtk_window_new (GTK_WINDOW_POPUP);
- gtk_widget_realize (gs->target_window);
- gs->pstarget = gs->target_window->window;
-
- g_assert (gs->pstarget != NULL);
-
- g_signal_connect (gs->target_window, "event",
- G_CALLBACK (ps_document_widget_event),
- gs);
- }
-
- setup_pixmap (gs, page, scale, rotation);
- setup_page (gs, page, scale, rotation);
-
- render_page (gs, page);
-}
-
static EvDocumentInfo *
ps_document_get_info (EvDocument *document)
{
info->creator = g_strdup (ps->doc->creator);
info->n_pages = ev_document_get_n_pages (document);
- get_page_box (PS_DOCUMENT (document), 0, &urx, &ury, &llx, &lly);
+ psgetpagebox (PS_DOCUMENT (document)->doc, 0, &urx, &ury, &llx, &lly);
info->paper_width = (urx - llx) / 72.0f * 25.4f;
info->paper_height = (ury - lly) / 72.0f * 25.4f;
iface->get_info = ps_document_get_info;
}
+/* EvAsyncRendererIface */
+static void
+ps_interpreter_page_rendered (PSInterpreter *gs,
+ GdkPixbuf *pixbuf,
+ PSDocument *ps_document)
+{
+ g_signal_emit_by_name (ps_document, "render_finished", pixbuf);
+}
+
+static void
+ps_async_renderer_render_pixbuf (EvAsyncRenderer *renderer,
+ gint page,
+ gdouble scale,
+ gint rotation)
+{
+ PSDocument *ps_document = PS_DOCUMENT (renderer);
+
+ g_return_if_fail (PS_IS_INTERPRETER (ps_document->gs));
+
+ rotation = (rotation + ps_document_get_page_rotation (ps_document, page)) % 360;
+
+ ps_interpreter_render_page (ps_document->gs, page, scale, rotation);
+}
+
static void
ps_async_renderer_iface_init (EvAsyncRendererIface *iface)
{
iface->render_pixbuf = ps_async_renderer_render_pixbuf;
}
+/* EvDocumentThumbnailsIface */
+static void
+ps_interpreter_thumbnail_rendered (PSInterpreter *gs,
+ GdkPixbuf *pixbuf,
+ PSDocument *ps_document)
+{
+ if (ps_document->thumbnail)
+ g_object_unref (ps_document->thumbnail);
+ ps_document->thumbnail = g_object_ref (pixbuf);
+
+ g_cond_broadcast (ps_document->thumbs_cond);
+}
+
+static gboolean
+ps_document_render_thumbnail (PSDocument *ps_document)
+{
+ ps_interpreter_render_page (ps_document->thumbs_gs,
+ ps_document->thumbs_rc->page,
+ ps_document->thumbs_rc->scale,
+ ps_document->thumbs_rc->rotation);
+
+ return FALSE;
+}
+
+static GdkPixbuf *
+ps_document_thumbnails_get_thumbnail (EvDocumentThumbnails *document_thumbnails,
+ EvRenderContext *rc,
+ gboolean border)
+{
+ PSDocument *ps_document;
+ GdkPixbuf *pixbuf = NULL;
+
+ ps_document = PS_DOCUMENT (document_thumbnails);
+
+ g_return_val_if_fail (ps_document->filename != NULL, NULL);
+ g_return_val_if_fail (ps_document->doc != NULL, NULL);
+
+ if (!ps_document->thumbs_gs) {
+ ps_document->thumbs_gs = ps_interpreter_new (ps_document->filename,
+ ps_document->doc);
+ g_signal_connect (G_OBJECT (ps_document->thumbs_gs), "page_rendered",
+ G_CALLBACK (ps_interpreter_thumbnail_rendered),
+ (gpointer) ps_document);
+ }
+
+ if (!ps_document->thumbs_mutex)
+ ps_document->thumbs_mutex = g_mutex_new ();
+ ps_document->thumbs_cond = g_cond_new ();
+
+ if (ps_document->thumbs_rc)
+ g_object_unref (ps_document->thumbs_rc);
+ ps_document->thumbs_rc = g_object_ref (rc);
+
+ ev_document_doc_mutex_unlock ();
+ g_mutex_lock (ps_document->thumbs_mutex);
+ g_idle_add ((GSourceFunc)ps_document_render_thumbnail, ps_document);
+ g_cond_wait (ps_document->thumbs_cond, ps_document->thumbs_mutex);
+ g_cond_free (ps_document->thumbs_cond);
+ ps_document->thumbs_cond = NULL;
+ g_mutex_unlock (ps_document->thumbs_mutex);
+ ev_document_doc_mutex_lock ();
+
+ pixbuf = ps_document->thumbnail;
+ ps_document->thumbnail = NULL;
+
+ if (border) {
+ GdkPixbuf *border_pixbuf;
+
+ border_pixbuf = ev_document_misc_get_thumbnail_frame (-1, -1, pixbuf);
+ g_object_unref (pixbuf);
+ pixbuf = border_pixbuf;
+ }
+
+ return pixbuf;
+}
+
+static void
+ps_document_thumbnails_get_dimensions (EvDocumentThumbnails *document_thumbnails,
+ EvRenderContext *rc,
+ gint *width,
+ gint *height)
+{
+ PSDocument *ps_document;
+ gdouble page_width, page_height;
+
+ ps_document = PS_DOCUMENT (document_thumbnails);
+
+ ps_document_get_page_size (EV_DOCUMENT (ps_document),
+ rc->page,
+ &page_width, &page_height);
+
+ if (rc->rotation == 90 || rc->rotation == 270) {
+ *width = (gint) (page_height * rc->scale);
+ *height = (gint) (page_width * rc->scale);
+ } else {
+ *width = (gint) (page_width * rc->scale);
+ *height = (gint) (page_height * rc->scale);
+ }
+}
+
+static void
+ps_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface)
+{
+ iface->get_thumbnail = ps_document_thumbnails_get_thumbnail;
+ iface->get_dimensions = ps_document_thumbnails_get_dimensions;
+}
+
+/* EvFileExporterIface */
static gboolean
ps_document_file_exporter_format_supported (EvFileExporter *exporter,
EvFileExporterFormat format)
https://www.fi.muni.cz/~kas/git / evince.git / blobdiff