X-Git-Url: https://www.fi.muni.cz/~kas/git//home/kas/public_html/git/?a=blobdiff_plain;f=backend%2Fps%2Fps-document.c;h=0931fb91d37f63414879eddeb732500419c46f68;hb=61b14b7612531f6e67cc9783a104f7e7f761295d;hp=8e92099decd7c8af481984fa93268d527ab99c0e;hpb=5cd91dc31f4d18f7500147a73b9076270d19ffc0;p=evince.git diff --git a/backend/ps/ps-document.c b/backend/ps/ps-document.c index 8e92099d..0931fb91 100644 --- a/backend/ps/ps-document.c +++ b/backend/ps/ps-document.c @@ -1,9 +1,9 @@ /* 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 @@ -21,1022 +21,191 @@ * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ - + #include "config.h" -#include -#include -#include -#include -#include -#include -#include -#include + +#include #include -#include -#include -#include +#include +#include #include -#include -#include -#include -#include -#include -#include #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”."), + 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”."), + 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; } @@ -1055,29 +224,34 @@ ps_document_load (EvDocument *document, 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; @@ -1091,11 +265,11 @@ save_document (PSDocument *document, const char *filename) 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); } @@ -1130,7 +304,7 @@ save_page_list (PSDocument *document, int *page_list, const char *filename) 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); @@ -1171,36 +345,73 @@ ps_document_save (EvDocument *document, } 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; } } @@ -1210,29 +421,6 @@ ps_document_can_get_text (EvDocument *document) 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) { @@ -1253,7 +441,7 @@ 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; @@ -1272,12 +460,144 @@ ps_document_document_iface_init (EvDocumentIface *iface) 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)