From 86f5227c273c1f2a120a211637dcdde422d56acd Mon Sep 17 00:00:00 2001 From: Carlos Garcia Campos Date: Fri, 02 Feb 2007 12:03:26 +0000 Subject: Rework ps-document. Code cleanups, remove deprecated code. 2007-02-02 Carlos Garcia Campos * backend/ps/Makefile.am: * backend/ps/ps-document.[ch]: (ps_section_free), (ps_document_init), (ps_document_dispose), (ps_document_class_init), (ps_interpreter_input), (ps_interpreter_output), (ps_interpreter_error), (setup_interpreter_env), (ps_interpreter_start), (ps_interpreter_stop), (ps_interpreter_failed), (ps_interpreter_is_ready), (check_filecompressed), (document_load), (ps_document_load), (ps_document_get_n_pages), (setup_page), (setup_pixmap), (ps_document_widget_event), (send_ps), (ps_document_next_page), (render_page): Rework ps-document. Code cleanups, remove deprecated code. svn path=/trunk/; revision=2284 --- (limited to 'backend') diff --git a/backend/ps/Makefile.am b/backend/ps/Makefile.am index 499eee3..9e813d6 100644 --- a/backend/ps/Makefile.am +++ b/backend/ps/Makefile.am @@ -2,9 +2,8 @@ INCLUDES = \ -I$(top_srcdir) \ -I$(top_srcdir)/libdocument \ $(BACKEND_CFLAGS) \ - $(WARN_CFLAGS) - -# $(DISABLE_DEPRECATED) + $(WARN_CFLAGS) \ + $(DISABLE_DEPRECATED) noinst_LTLIBRARIES = libpsdocument.la diff --git a/backend/ps/ps-document.c b/backend/ps/ps-document.c index 8e92099..79f29cb 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 @@ -21,29 +21,24 @@ * 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 -#include -#include -#include #include "ps-document.h" +#include "ps.h" +#include "gstypes.h" #include "gsdefaults.h" #include "ev-file-exporter.h" #include "ev-async-renderer.h" @@ -56,36 +51,72 @@ PS_DOCUMENT(gs)->gs_filename) /* structure to describe section of file to send to ghostscript */ -struct record_list -{ +typedef struct { FILE *fp; - long begin; + glong begin; guint len; gboolean seek_needed; gboolean close; - struct record_list *next; +} PSSection; + +struct _PSDocument { + GObject object; + + GtkWidget *target_window; + GdkWindow *pstarget; + GdkPixmap *bpixmap; + glong message_window; /* Used by ghostview to receive messages from app */ + + GPid interpreter_pid; /* PID of interpreter, -1 if none */ + GIOChannel *interpreter_input; /* stdin of interpreter */ + GIOChannel *interpreter_output; /* stdout of interpreter */ + GIOChannel *interpreter_err; /* stderr of interpreter */ + guint interpreter_input_id; + guint interpreter_output_id; + guint interpreter_error_id; + + gboolean busy; /* Is gs busy drawing? */ + gboolean structured_doc; + + GQueue *ps_input; + gchar *input_buffer_ptr; + guint bytes_left; + guint buffer_bytes_left; + + FILE *gs_psfile; /* the currently loaded FILE */ + gchar *gs_filename; /* the currently loaded filename */ + gchar *gs_filename_unc; /* Uncompressed file */ + gchar *input_buffer; + gboolean send_filename_to_gs; /* True if gs should read from file directly */ + struct document *doc; + + gint *ps_export_pagelist; + gchar *ps_export_filename; + + const gchar *gs_status; /* PSDocument status */ }; -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; + + GdkAtom gs_atom; + GdkAtom next_atom; + GdkAtom page_atom; + GdkAtom string_atom; +}; + +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_interpreter_start (PSDocument *gs); +static void ps_interpreter_stop (PSDocument *gs); +static void ps_interpreter_failed (PSDocument *gs, + const gchar *msg); +static gboolean ps_interpreter_is_ready (PSDocument *gs); + +static void push_pixbuf (PSDocument *gs); + G_DEFINE_TYPE_WITH_CODE (PSDocument, ps_document, G_TYPE_OBJECT, { @@ -97,36 +128,42 @@ G_DEFINE_TYPE_WITH_CODE (PSDocument, ps_document, G_TYPE_OBJECT, ps_async_renderer_iface_init); }); -static GObjectClass *parent_class = NULL; -static PSDocumentClass *gs_class = NULL; +static void +ps_section_free (PSSection *section) +{ + if (!section) + return; + + if (section->close && section->fp) + fclose (section->fp); + g_free (section); +} + +/* PSDocument */ 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->interpreter_input = -1; - gs->interpreter_output = -1; - gs->interpreter_err = -1; + gs->interpreter_input = NULL; + gs->interpreter_output = NULL; + gs->interpreter_err = NULL; gs->interpreter_input_id = 0; gs->interpreter_output_id = 0; gs->interpreter_error_id = 0; - gs->ps_input = NULL; + gs->ps_input = g_queue_new (); gs->input_buffer = NULL; gs->input_buffer_ptr = NULL; gs->bytes_left = 0; @@ -142,9 +179,7 @@ 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; @@ -161,17 +196,18 @@ ps_document_dispose (GObject *object) } if (gs->gs_filename_unc) { - unlink(gs->gs_filename_unc); + g_unlink(gs->gs_filename_unc); g_free(gs->gs_filename_unc); gs->gs_filename_unc = NULL; } if (gs->bpixmap) { - gdk_drawable_unref (gs->bpixmap); + g_object_unref (gs->bpixmap); + gs->bpixmap = NULL; } - if(gs->input_buffer) { - g_free(gs->input_buffer); + if (gs->input_buffer) { + g_free (gs->input_buffer); gs->input_buffer = NULL; } @@ -181,21 +217,25 @@ ps_document_dispose (GObject *object) gs->pstarget = NULL; } - stop_interpreter (gs); + if (gs->ps_input) { + g_queue_foreach (gs->ps_input, (GFunc)ps_section_free, NULL); + g_queue_free (gs->ps_input); + gs->ps_input = NULL; + } + + ps_interpreter_stop (gs); - G_OBJECT_CLASS (parent_class)->dispose (object); + G_OBJECT_CLASS (ps_document_parent_class)->dispose (object); } static void -ps_document_class_init(PSDocumentClass *klass) +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 = G_OBJECT_CLASS (klass); - object_class->dispose = ps_document_dispose; + object_class->dispose = ps_document_dispose; klass->gs_atom = gdk_atom_intern ("GHOSTVIEW", FALSE); klass->next_atom = gdk_atom_intern ("NEXT", FALSE); @@ -203,418 +243,224 @@ ps_document_class_init(PSDocumentClass *klass) 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); -} - +/* PSInterpreter */ static gboolean -ps_document_widget_event (GtkWidget *widget, GdkEvent *event, gpointer data) +ps_interpreter_input (GIOChannel *io, + GIOCondition condition, + PSDocument *gs) { - 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) { - gs->busy = FALSE; - - push_pixbuf (gs); - } - - 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; - } - - 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(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) { - - 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 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); + PSSection *section = NULL; 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); + if (gs->bytes_left == 0) { + ps_section_free (section); + section = NULL; + g_queue_pop_tail (gs->ps_input); + } + + if (section == NULL) { + section = g_queue_peek_tail (gs->ps_input); } /* 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 (section && section->seek_needed) { + fseek (section->fp, section->begin, SEEK_SET); + section->seek_needed = FALSE; + gs->bytes_left = section->len; } if (gs->bytes_left > MAX_BUFSIZE) { - gs->buffer_bytes_left = fread (gs->input_buffer, sizeof(char), - MAX_BUFSIZE, gs->ps_input->fp); + gs->buffer_bytes_left = fread (gs->input_buffer, sizeof (char), + MAX_BUFSIZE, section->fp); } else if (gs->bytes_left > 0) { - gs->buffer_bytes_left = fread (gs->input_buffer, sizeof(char), - gs->bytes_left, gs->ps_input->fp); + gs->buffer_bytes_left = fread (gs->input_buffer, sizeof (char), + gs->bytes_left, section->fp); } else { gs->buffer_bytes_left = 0; } + if (gs->bytes_left > 0 && gs->buffer_bytes_left == 0) { - interpreter_failed (gs, NULL); /* Error occurred */ + ps_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; + GIOStatus status; + gsize bytes_written; + GError *error = NULL; + + status = g_io_channel_write_chars (gs->interpreter_input, + gs->input_buffer_ptr, + gs->buffer_bytes_left, + &bytes_written, + &error); + switch (status) { + case G_IO_STATUS_NORMAL: + gs->buffer_bytes_left -= bytes_written; + gs->input_buffer_ptr += bytes_written; + + break; + case G_IO_STATUS_ERROR: + ps_interpreter_failed (gs, error->message); + g_error_free (error); + + break; + case G_IO_STATUS_AGAIN: + default: + break; } } - } while (gs->ps_input && gs->buffer_bytes_left == 0); + } while (!g_queue_is_empty (gs->ps_input) && gs->buffer_bytes_left == 0); - signal (SIGPIPE, oldsig); + if (g_queue_is_empty (gs->ps_input) && gs->buffer_bytes_left == 0) { + GIOFlags flags; - 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; - } + flags = g_io_channel_get_flags (gs->interpreter_input); + + g_io_channel_set_flags (gs->interpreter_input, + flags & ~G_IO_FLAG_NONBLOCK, NULL); + g_io_channel_flush (gs->interpreter_input, NULL); + g_io_channel_set_flags (gs->interpreter_input, + flags | G_IO_FLAG_NONBLOCK, NULL); + + gs->interpreter_input_id = 0; + + return FALSE; } + + return TRUE; } -static int -start_interpreter (PSDocument *gs) +static gboolean +ps_interpreter_output (GIOChannel *io, + GIOCondition condition, + PSDocument *gs) +{ + gchar buf[MAX_BUFSIZE + 1]; + gsize bytes = 0; + GIOStatus status; + GError *error = NULL; + + status = g_io_channel_read_chars (io, buf, MAX_BUFSIZE, + &bytes, &error); + switch (status) { + case G_IO_STATUS_NORMAL: + if (bytes > 0) { + buf[bytes] = '\0'; + g_print ("%s", buf); + } + break; + case G_IO_STATUS_EOF: + g_io_channel_unref (gs->interpreter_output); + gs->interpreter_output = NULL; + gs->interpreter_output_id = 0; + + return FALSE; + case G_IO_STATUS_ERROR: + ps_interpreter_failed (gs, error->message); + g_error_free (error); + gs->interpreter_output_id = 0; + + return FALSE; + default: + break; + } + + if (!gs->interpreter_err) { + ps_interpreter_failed (gs, NULL); + } + + return TRUE; +} + +static gboolean +ps_interpreter_error (GIOChannel *io, + GIOCondition condition, + 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 */ + gchar buf[MAX_BUFSIZE + 1]; + gsize bytes = 0; + GIOStatus status; + GError *error = NULL; + + status = g_io_channel_read_chars (io, buf, MAX_BUFSIZE, + &bytes, &error); + switch (status) { + case G_IO_STATUS_NORMAL: + if (bytes > 0) { + buf[bytes] = '\0'; + g_print ("%s", buf); + } + + break; + case G_IO_STATUS_EOF: + g_io_channel_unref (gs->interpreter_err); + gs->interpreter_err = NULL; + gs->interpreter_error_id = 0; + + return FALSE; + case G_IO_STATUS_ERROR: + ps_interpreter_failed (gs, error->message); + g_error_free (error); + gs->interpreter_error_id = 0; + + break; + default: + break; + } + + if (!gs->interpreter_output) { + ps_interpreter_failed (gs, NULL); + } + + return TRUE; +} #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; +static void +setup_interpreter_env (gchar **envp) +{ + gint i; - if(!gs->gs_filename) - return 0; + for (i = 0; envp[i]; i++) + putenv (envp[i]); +} - stop_interpreter(gs); +static void +ps_interpreter_start (PSDocument *gs) +{ + gchar *argv[NUM_ARGS], *dir, *gv_env, *gs_path; + gchar **gs_args, **alpha_args = NULL; + gchar **envp; + gint pin, pout, perr; + gint argc = 0, i; + GError *error = NULL; + + if (!gs->gs_filename) + return; + + ps_interpreter_stop (gs); + + dir = g_path_get_dirname (gs->gs_filename); /* 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++) { + 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++) { + for (i = 0; i < NUM_ALPHA_ARGS && alpha_args[i]; i++, argc++) { argv[argc] = alpha_args[i]; } @@ -622,7 +468,6 @@ start_interpreter (PSDocument *gs) 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"; @@ -633,157 +478,103 @@ start_interpreter (PSDocument *gs) 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;DISPLAY=%s", - gdk_x11_drawable_get_xid (gs->pstarget), + gdk_x11_drawable_get_xid (gs->pstarget), gdk_x11_drawable_get_xid (gs->bpixmap), gdk_display_get_name (gdk_drawable_get_display (gs->pstarget))); + envp = g_strsplit (gv_env, ";", 2); + g_free (gv_env); + + if (g_spawn_async_with_pipes (dir, argv, NULL, 0, + (GSpawnChildSetupFunc)setup_interpreter_env, envp, + &(gs->interpreter_pid), + &pin, &pout, &perr, + &error)) { + GIOFlags flags; + + gs->interpreter_input = g_io_channel_unix_new (pin); + g_io_channel_set_encoding (gs->interpreter_input, NULL, NULL); + flags = g_io_channel_get_flags (gs->interpreter_input); + g_io_channel_set_flags (gs->interpreter_input, + flags | G_IO_FLAG_NONBLOCK, NULL); - 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; + + gs->interpreter_output = g_io_channel_unix_new (pout); + flags = g_io_channel_get_flags (gs->interpreter_output); + g_io_channel_set_flags (gs->interpreter_output, + flags | G_IO_FLAG_NONBLOCK, NULL); + gs->interpreter_output_id = + g_io_add_watch (gs->interpreter_output, G_IO_IN, + (GIOFunc)ps_interpreter_output, + gs); + + gs->interpreter_err = g_io_channel_unix_new (perr); + flags = g_io_channel_get_flags (gs->interpreter_err); + g_io_channel_set_flags (gs->interpreter_err, + flags | G_IO_FLAG_NONBLOCK, NULL); + gs->interpreter_error_id = + g_io_add_watch (gs->interpreter_err, G_IO_IN, + (GIOFunc)ps_interpreter_error, + gs); + } else { + g_warning (error->message); + g_error_free (error); } - return TRUE; + g_free (dir); + g_strfreev (envp); + g_strfreev (gs_args); + g_strfreev (alpha_args); } static void -stop_interpreter(PSDocument * gs) +ps_interpreter_stop (PSDocument *gs) { if (gs->interpreter_pid > 0) { - int status = 0; + gint status = 0; + kill (gs->interpreter_pid, SIGTERM); - while ((wait(&status) == -1) && (errno == EINTR)); + while ((wait (&status) == -1) && (errno == EINTR)); + g_spawn_close_pid (gs->interpreter_pid); 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); + if (gs->interpreter_input) { + g_io_channel_unref (gs->interpreter_input); + gs->interpreter_input = NULL; + + if (gs->interpreter_input_id > 0) { + g_source_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->ps_input) { + g_queue_foreach (gs->ps_input, (GFunc)ps_section_free, NULL); + g_queue_free (gs->ps_input); + gs->ps_input = g_queue_new (); } } - 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); + if (gs->interpreter_output) { + g_io_channel_unref (gs->interpreter_output); + gs->interpreter_output = NULL; + + if (gs->interpreter_output_id > 0) { + g_source_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); + if (gs->interpreter_err) { + g_io_channel_unref (gs->interpreter_err); + gs->interpreter_err = NULL; + + if (gs->interpreter_error_id > 0) { + g_source_remove (gs->interpreter_error_id); gs->interpreter_error_id = 0; } } @@ -791,32 +582,32 @@ stop_interpreter(PSDocument * gs) gs->busy = FALSE; } -/* If file exists and is a regular file then return its length, else -1 */ -static gint -file_length (const gchar * filename) +static void +ps_interpreter_failed (PSDocument *gs, const char *msg) { - 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; + if (msg) + g_warning (msg); + + push_pixbuf (gs); + ps_interpreter_stop (gs); } -/* Test if file exists, is a regular file and its length is > 0 */ static gboolean -file_readable(const char *filename) +ps_interpreter_is_ready (PSDocument *gs) { - return (file_length (filename) > 0); + return (gs->interpreter_pid != -1 && + !gs->busy && + (g_queue_is_empty (gs->ps_input))); } +/* EvDocumentIface */ /* * 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 * +static const gchar * check_filecompressed (PSDocument * gs) { FILE *file; @@ -847,7 +638,7 @@ check_filecompressed (PSDocument * gs) /* 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) { + if ((fd = g_mkstemp (filename_unc)) < 0) { g_free (filename_unc); g_free (filename); return NULL; @@ -855,7 +646,7 @@ check_filecompressed (PSDocument * gs) close (fd); filename_err = g_strconcat (g_get_tmp_dir (), "/evinceXXXXXX", NULL); - if ((fd = mkstemp(filename_err)) < 0) { + if ((fd = g_mkstemp (filename_err)) < 0) { g_free (filename_err); g_free (filename_unc); g_free (filename); @@ -865,28 +656,29 @@ check_filecompressed (PSDocument * gs) 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; + g_file_test (filename_unc, G_FILE_TEST_IS_REGULAR)) { + /* sucessfully uncompressed file */ + gs->gs_filename_unc = filename_unc; } else { 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); + msg = g_strdup_printf (_("Error while decompressing file “%s”:\n"), + filename_dsp); g_free (filename_dsp); - interpreter_failed (gs, msg); + ps_interpreter_failed (gs, msg); g_free (msg); - unlink (filename_unc); + g_unlink (filename_unc); g_free (filename_unc); filename_unc = NULL; } - unlink (filename_err); + g_unlink (filename_err); g_free (filename_err); g_free (cmdline); g_free (filename); @@ -894,22 +686,11 @@ check_filecompressed (PSDocument * gs) 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); - + const gchar *filename; + if (fname == NULL) { gs->gs_status = ""; return FALSE; @@ -920,123 +701,43 @@ document_load (PSDocument *gs, const gchar *fname) 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; - } + /* + * 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; + + filename_dsp = g_filename_display_name (fname); + msg = g_strdup_printf (_("Cannot open file “%s”.\n"), filename_dsp); + g_free (filename_dsp); + + ps_interpreter_failed (gs, msg); + g_free (msg); + gs->gs_status = _("File is not readable."); + + return 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(!gs->gs_filename) { + filename = check_filecompressed (gs); + + if (!filename || (gs->gs_psfile = fopen (filename, "r")) == NULL) { + ps_interpreter_failed (gs, NULL); 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); + + /* 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; } @@ -1056,28 +757,32 @@ 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_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); + g_free (filename); + + return FALSE; } + + 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); g_free (filename); return result; @@ -1171,12 +876,10 @@ 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) { return -1; } @@ -1184,11 +887,98 @@ ps_document_get_n_pages (EvDocument *document) return ps->structured_doc ? ps->doc->numpages : 1; } +#define DEFAULT_PAGE_SIZE 1 + static void -ps_document_get_page_size (EvDocument *document, - int page, - double *width, - double *height) +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; + + 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 void +ps_document_get_page_size (EvDocument *document, + int page, + double *width, + double *height) { PSDocument *gs = PS_DOCUMENT (document); int urx, ury, llx, lly; @@ -1210,29 +1000,6 @@ 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) { @@ -1272,12 +1039,262 @@ ps_document_document_iface_init (EvDocumentIface *iface) iface->get_info = ps_document_get_info; } +/* EvAsyncRendererIface */ +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; + PSDocumentClass *gs_class; + + gs_class = PS_DOCUMENT_GET_CLASS (gs); + + 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 +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 (gs->bpixmap) { + gint w, h; + + gdk_drawable_get_size (gs->bpixmap, &w, &h); + + if (pixmap_width != w || h != pixmap_height) { + g_object_unref (gs->bpixmap); + gs->bpixmap = NULL; + ps_interpreter_stop (gs); + } + } + + if (!gs->bpixmap) { + fill = gdk_gc_new (gs->pstarget); + colormap = gdk_drawable_get_colormap (gs->pstarget); + gdk_colormap_alloc_color (colormap, &white, FALSE, TRUE); + 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); + } +} + +static void +push_pixbuf (PSDocument *gs) +{ + GdkColormap *cmap; + GdkPixbuf *pixbuf; + gint width, height; + + if (gs->pstarget == NULL) + return; + + cmap = gdk_drawable_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 gboolean +ps_document_widget_event (GtkWidget *widget, GdkEvent *event, gpointer data) +{ + PSDocument *gs = (PSDocument *) data; + PSDocumentClass *gs_class; + + if (event->type != GDK_CLIENT_EVENT) + return FALSE; + + gs_class = PS_DOCUMENT_GET_CLASS (gs); + + gs->message_window = event->client.data.l[0]; + + if (event->client.message_type == gs_class->page_atom) { + gs->busy = FALSE; + + push_pixbuf (gs); + } + + return TRUE; +} + +static void +send_ps (PSDocument *gs, long begin, unsigned int len, gboolean close) +{ + PSSection *ps_new; + + if (!gs->interpreter_input) { + g_critical ("No pipe to gs: error in send_ps()."); + return; + } + + ps_new = g_new0 (PSSection, 1); + ps_new->fp = gs->gs_psfile; + ps_new->begin = begin; + ps_new->len = len; + ps_new->seek_needed = TRUE; + ps_new->close = close; + + if (gs->input_buffer == NULL) { + gs->input_buffer = g_malloc (MAX_BUFSIZE); + } + + if (g_queue_is_empty (gs->ps_input)) { + gs->input_buffer_ptr = gs->input_buffer; + gs->bytes_left = len; + gs->buffer_bytes_left = 0; + g_queue_push_head (gs->ps_input, ps_new); + gs->interpreter_input_id = + g_io_add_watch (gs->interpreter_input, + G_IO_OUT/* | G_IO_HUP | G_IO_ERR | G_IO_NVAL*/, + (GIOFunc)ps_interpreter_input, + gs); + } else { + g_queue_push_head (gs->ps_input, ps_new); + } +} + +static void +ps_document_next_page (PSDocument *gs) +{ + XEvent event; + GdkScreen *screen; + GdkDisplay *display; + Display *dpy; + PSDocumentClass *gs_class; + + g_assert (gs->interpreter_pid != 0); + g_assert (gs->busy != TRUE); + + gs_class = PS_DOCUMENT_GET_CLASS (gs); + + 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 (); +} + +static gboolean +render_page (PSDocument *gs, int page) +{ + g_assert (gs != NULL); + + if (!gs->gs_filename) { + return FALSE; + } + + if (gs->structured_doc && gs->doc) { + if (ps_interpreter_is_ready (gs)) { + ps_document_next_page (gs); + } else { + ps_interpreter_start (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 (!ps_interpreter_is_ready (gs)) { + ps_interpreter_start (gs); + } + ps_document_next_page (gs); + } + + return TRUE; +} + +static void +ps_async_renderer_render_pixbuf (EvAsyncRenderer *renderer, + gint page, + gdouble scale, + gint 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 void ps_async_renderer_iface_init (EvAsyncRendererIface *iface) { iface->render_pixbuf = ps_async_renderer_render_pixbuf; } +/* EvFileExporterIface */ static gboolean ps_document_file_exporter_format_supported (EvFileExporter *exporter, EvFileExporterFormat format) diff --git a/backend/ps/ps-document.h b/backend/ps/ps-document.h index c8d19db..debf17e 100644 --- a/backend/ps/ps-document.h +++ b/backend/ps/ps-document.h @@ -24,71 +24,20 @@ #ifndef __PS_DOCUMENT_H__ #define __PS_DOCUMENT_H__ -#include -#include - #include "ev-document.h" -#include "ps.h" -#include "gstypes.h" G_BEGIN_DECLS -#define PS_TYPE_DOCUMENT (ps_document_get_type()) -#define PS_DOCUMENT(obj) GTK_CHECK_CAST (obj, ps_document_get_type (), PSDocument) -#define PS_DOCUMENT_CLASS(klass) GTK_CHECK_CLASS_CAST (klass, ps_document_get_type (), PSDocumentClass) -#define PS_IS_DOCUMENT(obj) GTK_CHECK_TYPE (obj, ps_document_get_type()) +#define PS_TYPE_DOCUMENT (ps_document_get_type()) +#define PS_DOCUMENT(obj) GTK_CHECK_CAST (obj, PS_TYPE_DOCUMENT, PSDocument) +#define PS_DOCUMENT_CLASS(klass) GTK_CHECK_CLASS_CAST (klass, PS_TYPE_DOCUMENT, PSDocumentClass) +#define PS_IS_DOCUMENT(obj) GTK_CHECK_TYPE (obj, PS_TYPE_DOCUMENT) +#define PS_DOCUMENT_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj), PS_TYPE_DOCUMENT, PSDocumentClass)) -typedef struct _PSDocument PSDocument; +typedef struct _PSDocument PSDocument; typedef struct _PSDocumentClass PSDocumentClass; -struct _PSDocument { - GObject object; - - GtkWidget *target_window; - GdkWindow *pstarget; - GdkPixmap *bpixmap; - long message_window; /* Used by ghostview to receive messages from app */ - - pid_t interpreter_pid; /* PID of interpreter, -1 if none */ - int interpreter_input; /* stdin of interpreter */ - int interpreter_output; /* stdout of interpreter */ - int interpreter_err; /* stderr of interpreter */ - guint interpreter_input_id; - guint interpreter_output_id; - guint interpreter_error_id; - - gboolean busy; /* Is gs busy drawing? */ - gboolean structured_doc; - - struct record_list *ps_input; - gchar *input_buffer_ptr; - guint bytes_left; - guint buffer_bytes_left; - - FILE *gs_psfile; /* the currently loaded FILE */ - gchar *gs_filename; /* the currently loaded filename */ - gchar *gs_filename_unc; /* Uncompressed file */ - gchar *input_buffer; - gboolean send_filename_to_gs; /* True if gs should read from file directly */ - gboolean reading_from_pipe; /* True if ggv is reading input from pipe */ - struct document *doc; - - int *ps_export_pagelist; - char *ps_export_filename; - - const gchar *gs_status; /* PSDocument status */ -}; - -struct _PSDocumentClass { - GObjectClass parent_class; - - GdkAtom gs_atom; - GdkAtom next_atom; - GdkAtom page_atom; - GdkAtom string_atom; -}; - -GType ps_document_get_type(void); +GType ps_document_get_type (void) G_GNUC_CONST; G_END_DECLS -- cgit v0.9.1