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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */
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* Copyright (C) 2005, Jonathan Blandford <jrb@gnome.org>
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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/* FIXME: Should probably buffer calls to libtiff with TIFFSetWarningHandler
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#include "tiff-document.h"
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#include "ev-document-misc.h"
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#include "ev-document-thumbnails.h"
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#include "ev-file-exporter.h"
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struct _TiffDocumentClass
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GObjectClass parent_class;
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GObject parent_instance;
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TIFF2PSContext *ps_export_ctx;
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typedef struct _TiffDocumentClass TiffDocumentClass;
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static void tiff_document_document_iface_init (EvDocumentIface *iface);
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static void tiff_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface);
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static void tiff_document_document_file_exporter_iface_init (EvFileExporterIface *iface);
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G_DEFINE_TYPE_WITH_CODE (TiffDocument, tiff_document, G_TYPE_OBJECT,
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{ G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT,
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tiff_document_document_iface_init);
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G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_THUMBNAILS,
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tiff_document_document_thumbnails_iface_init);
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G_IMPLEMENT_INTERFACE (EV_TYPE_FILE_EXPORTER,
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tiff_document_document_file_exporter_iface_init);
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static TIFFErrorHandler orig_error_handler = NULL;
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static TIFFErrorHandler orig_warning_handler = NULL;
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orig_error_handler = TIFFSetErrorHandler (NULL);
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orig_warning_handler = TIFFSetWarningHandler (NULL);
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TIFFSetErrorHandler (orig_error_handler);
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TIFFSetWarningHandler (orig_warning_handler);
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tiff_document_load (EvDocument *document,
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TiffDocument *tiff_document = TIFF_DOCUMENT (document);
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filename = g_filename_from_uri (uri, NULL, error);
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tiff = TIFFOpen (filename, "r");
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/* FIXME: unused data? why bother here */
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TIFFGetField(tiff, TIFFTAG_IMAGEWIDTH, &w);
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TIFFGetField(tiff, TIFFTAG_IMAGELENGTH, &h);
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tiff_document->tiff = tiff;
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g_free (tiff_document->uri);
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tiff_document->uri = g_strdup (uri);
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tiff_document_save (EvDocument *document,
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TiffDocument *tiff_document = TIFF_DOCUMENT (document);
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return ev_xfer_uri_simple (tiff_document->uri, uri, error);
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tiff_document_get_n_pages (EvDocument *document)
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TiffDocument *tiff_document = TIFF_DOCUMENT (document);
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g_return_val_if_fail (TIFF_IS_DOCUMENT (document), 0);
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g_return_val_if_fail (tiff_document->tiff != NULL, 0);
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if (tiff_document->n_pages == -1)
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tiff_document->n_pages = 0;
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tiff_document->n_pages ++;
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while (TIFFReadDirectory (tiff_document->tiff));
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return tiff_document->n_pages;
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tiff_document_get_page_size (EvDocument *document,
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TiffDocument *tiff_document = TIFF_DOCUMENT (document);
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g_return_if_fail (TIFF_IS_DOCUMENT (document));
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g_return_if_fail (tiff_document->tiff != NULL);
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if (TIFFSetDirectory (tiff_document->tiff, page) != 1)
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TIFFGetField (tiff_document->tiff, TIFFTAG_IMAGEWIDTH, &w);
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TIFFGetField (tiff_document->tiff, TIFFTAG_IMAGELENGTH, &h);
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TIFFGetField (tiff_document->tiff, TIFFTAG_XRESOLUTION, &x_res);
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TIFFGetField (tiff_document->tiff, TIFFTAG_YRESOLUTION, &y_res);
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h = h * (x_res / y_res);
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tiff_document_render_pixbuf (EvDocument *document,
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TiffDocument *tiff_document = TIFF_DOCUMENT (document);
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gint rowstride, bytes;
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guchar *pixels = NULL;
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GdkPixbuf *scaled_pixbuf;
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GdkPixbuf *rotated_pixbuf;
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g_return_val_if_fail (TIFF_IS_DOCUMENT (document), 0);
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g_return_val_if_fail (tiff_document->tiff != NULL, 0);
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if (TIFFSetDirectory (tiff_document->tiff, rc->page) != 1)
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if (!TIFFGetField (tiff_document->tiff, TIFFTAG_IMAGEWIDTH, &width))
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if (! TIFFGetField (tiff_document->tiff, TIFFTAG_IMAGELENGTH, &height))
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if (!TIFFGetField (tiff_document->tiff, TIFFTAG_XRESOLUTION, &x_res))
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if (! TIFFGetField (tiff_document->tiff, TIFFTAG_YRESOLUTION, &y_res))
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/* Sanity check the doc */
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if (width <= 0 || height <= 0)
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rowstride = width * 4;
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if (rowstride / 4 != width)
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bytes = height * rowstride;
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if (bytes / rowstride != height)
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pixels = g_try_malloc (bytes);
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pixbuf = gdk_pixbuf_new_from_data (pixels, GDK_COLORSPACE_RGB, TRUE, 8,
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width, height, rowstride,
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(GdkPixbufDestroyNotify) g_free, NULL);
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pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8, width, height);
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TIFFReadRGBAImageOriented (tiff_document->tiff, width, height, (uint32 *)gdk_pixbuf_get_pixels (pixbuf), ORIENTATION_TOPLEFT, 1);
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scaled_pixbuf = gdk_pixbuf_scale_simple (pixbuf,
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height * rc->scale * (x_res/y_res),
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GDK_INTERP_BILINEAR);
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g_object_unref (pixbuf);
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rotated_pixbuf = gdk_pixbuf_rotate_simple (scaled_pixbuf, 360 - rc->rotation);
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g_object_unref (scaled_pixbuf);
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return rotated_pixbuf;
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tiff_document_finalize (GObject *object)
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TiffDocument *tiff_document = TIFF_DOCUMENT (object);
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if (tiff_document->tiff)
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TIFFClose (tiff_document->tiff);
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if (tiff_document->uri)
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g_free (tiff_document->uri);
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G_OBJECT_CLASS (tiff_document_parent_class)->finalize (object);
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tiff_document_class_init (TiffDocumentClass *klass)
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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gobject_class->finalize = tiff_document_finalize;
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tiff_document_can_get_text (EvDocument *document)
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static EvDocumentInfo *
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tiff_document_get_info (EvDocument *document)
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EvDocumentInfo *info;
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info = g_new0 (EvDocumentInfo, 1);
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info->fields_mask = 0;
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tiff_document_document_iface_init (EvDocumentIface *iface)
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iface->load = tiff_document_load;
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iface->save = tiff_document_save;
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iface->can_get_text = tiff_document_can_get_text;
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iface->get_n_pages = tiff_document_get_n_pages;
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iface->get_page_size = tiff_document_get_page_size;
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iface->render_pixbuf = tiff_document_render_pixbuf;
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iface->get_info = tiff_document_get_info;
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tiff_document_thumbnails_get_thumbnail (EvDocumentThumbnails *document,
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tiff_document_get_page_size (EV_DOCUMENT (document),
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rc = ev_render_context_new (rotation, page, size/w);
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pixbuf = tiff_document_render_pixbuf (EV_DOCUMENT (document), rc);
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g_object_unref (G_OBJECT (rc));
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GdkPixbuf *tmp_pixbuf = pixbuf;
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pixbuf = ev_document_misc_get_thumbnail_frame (-1, -1, 0, tmp_pixbuf);
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g_object_unref (tmp_pixbuf);
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tiff_document_thumbnails_get_dimensions (EvDocumentThumbnails *document,
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gint suggested_width,
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tiff_document_get_page_size (EV_DOCUMENT (document),
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g_return_if_fail (w > 0);
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*width = suggested_width;
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*height = (gint) (suggested_width * page_ratio);
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tiff_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface)
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iface->get_thumbnail = tiff_document_thumbnails_get_thumbnail;
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iface->get_dimensions = tiff_document_thumbnails_get_dimensions;
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/* postscript exporter implementation */
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tiff_document_file_exporter_format_supported (EvFileExporter *exporter,
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EvFileExporterFormat format)
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return (format == EV_FILE_FORMAT_PS);
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tiff_document_file_exporter_begin (EvFileExporter *exporter,
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EvFileExporterFormat format,
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const char *filename,
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TiffDocument *document = TIFF_DOCUMENT (exporter);
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document->ps_export_ctx = tiff2ps_context_new(filename);
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tiff_document_file_exporter_do_page (EvFileExporter *exporter, EvRenderContext *rc)
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TiffDocument *document = TIFF_DOCUMENT (exporter);
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if (document->ps_export_ctx == NULL)
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if (TIFFSetDirectory (document->tiff, rc->page) != 1)
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tiff2ps_process_page (document->ps_export_ctx, document->tiff,
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tiff_document_file_exporter_end (EvFileExporter *exporter)
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TiffDocument *document = TIFF_DOCUMENT (exporter);
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if (document->ps_export_ctx == NULL)
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tiff2ps_context_finalize(document->ps_export_ctx);
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tiff_document_document_file_exporter_iface_init (EvFileExporterIface *iface)
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iface->format_supported = tiff_document_file_exporter_format_supported;
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iface->begin = tiff_document_file_exporter_begin;
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iface->do_page = tiff_document_file_exporter_do_page;
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iface->end = tiff_document_file_exporter_end;
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tiff_document_init (TiffDocument *tiff_document)
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tiff_document->n_pages = -1;