1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */
3 * Copyright (C) 2005, Jonathan Blandford <jrb@gnome.org>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2, or (at your option)
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20 /* FIXME: Should probably buffer calls to libtiff with TIFFSetWarningHandler
28 #include "tiff-document.h"
29 #include "ev-document-misc.h"
30 #include "ev-document-thumbnails.h"
31 #include "ev-ps-exporter.h"
33 struct _TiffDocumentClass
35 GObjectClass parent_class;
40 GObject parent_instance;
44 EvOrientation orientation;
45 TIFF2PSContext *ps_export_ctx;
48 typedef struct _TiffDocumentClass TiffDocumentClass;
50 static void tiff_document_document_iface_init (EvDocumentIface *iface);
51 static void tiff_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface);
52 static void tiff_document_document_ps_exporter_iface_init (EvPSExporterIface *iface);
54 G_DEFINE_TYPE_WITH_CODE (TiffDocument, tiff_document, G_TYPE_OBJECT,
55 { G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT,
56 tiff_document_document_iface_init);
57 G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_THUMBNAILS,
58 tiff_document_document_thumbnails_iface_init);
59 G_IMPLEMENT_INTERFACE (EV_TYPE_PS_EXPORTER,
60 tiff_document_document_ps_exporter_iface_init);
63 static TIFFErrorHandler orig_error_handler = NULL;
64 static TIFFErrorHandler orig_warning_handler = NULL;
69 orig_error_handler = TIFFSetErrorHandler (NULL);
70 orig_warning_handler = TIFFSetWarningHandler (NULL);
76 TIFFSetErrorHandler (orig_error_handler);
77 TIFFSetWarningHandler (orig_warning_handler);
81 tiff_document_load (EvDocument *document,
85 TiffDocument *tiff_document = TIFF_DOCUMENT (document);
90 /* FIXME: We could actually load uris */
91 filename = g_filename_from_uri (uri, NULL, error);
98 tiff = TIFFOpen (filename, "r");
102 /* FIXME: unused data? why bother here */
103 TIFFGetField(tiff, TIFFTAG_IMAGEWIDTH, &w);
104 TIFFGetField(tiff, TIFFTAG_IMAGELENGTH, &h);
111 tiff_document->tiff = tiff;
118 tiff_document_save (EvDocument *document,
126 tiff_document_get_n_pages (EvDocument *document)
128 TiffDocument *tiff_document = TIFF_DOCUMENT (document);
130 g_return_val_if_fail (TIFF_IS_DOCUMENT (document), 0);
131 g_return_val_if_fail (tiff_document->tiff != NULL, 0);
133 if (tiff_document->n_pages == -1)
136 tiff_document->n_pages = 0;
139 tiff_document->n_pages ++;
141 while (TIFFReadDirectory (tiff_document->tiff));
145 return tiff_document->n_pages;
149 tiff_document_get_page_size (EvDocument *document,
156 TiffDocument *tiff_document = TIFF_DOCUMENT (document);
158 g_return_if_fail (TIFF_IS_DOCUMENT (document));
159 g_return_if_fail (tiff_document->tiff != NULL);
162 if (TIFFSetDirectory (tiff_document->tiff, page) != 1)
168 TIFFGetField (tiff_document->tiff, TIFFTAG_IMAGEWIDTH, &w);
169 TIFFGetField (tiff_document->tiff, TIFFTAG_IMAGELENGTH, &h);
170 TIFFGetField (tiff_document->tiff, TIFFTAG_XRESOLUTION, &x_res);
171 TIFFGetField (tiff_document->tiff, TIFFTAG_YRESOLUTION, &y_res);
172 h = h * (x_res / y_res);
174 if (tiff_document->orientation == EV_ORIENTATION_PORTRAIT ||
175 tiff_document->orientation == EV_ORIENTATION_UPSIDEDOWN) {
186 tiff_document_get_orientation (EvDocument *document)
188 TiffDocument *tiff_document = TIFF_DOCUMENT (document);
190 return tiff_document->orientation;
194 tiff_document_set_orientation (EvDocument *document,
195 EvOrientation orientation)
197 TiffDocument *tiff_document = TIFF_DOCUMENT (document);
199 tiff_document->orientation = orientation;
203 rotate_pixbuf (EvDocument *document, GdkPixbuf *pixbuf)
205 TiffDocument *tiff_document = TIFF_DOCUMENT (document);
207 switch (tiff_document->orientation)
209 case EV_ORIENTATION_LANDSCAPE:
210 return gdk_pixbuf_rotate_simple (pixbuf, 90);
211 case EV_ORIENTATION_UPSIDEDOWN:
212 return gdk_pixbuf_rotate_simple (pixbuf, 180);
213 case EV_ORIENTATION_SEASCAPE:
214 return gdk_pixbuf_rotate_simple (pixbuf, 270);
216 return g_object_ref (pixbuf);
221 tiff_document_render_pixbuf (EvDocument *document,
224 TiffDocument *tiff_document = TIFF_DOCUMENT (document);
227 gint rowstride, bytes;
228 guchar *pixels = NULL;
230 GdkPixbuf *scaled_pixbuf;
231 GdkPixbuf *rotated_pixbuf;
233 g_return_val_if_fail (TIFF_IS_DOCUMENT (document), 0);
234 g_return_val_if_fail (tiff_document->tiff != NULL, 0);
237 if (TIFFSetDirectory (tiff_document->tiff, rc->page) != 1)
243 if (!TIFFGetField (tiff_document->tiff, TIFFTAG_IMAGEWIDTH, &width))
249 if (! TIFFGetField (tiff_document->tiff, TIFFTAG_IMAGELENGTH, &height))
255 if (!TIFFGetField (tiff_document->tiff, TIFFTAG_XRESOLUTION, &x_res))
261 if (! TIFFGetField (tiff_document->tiff, TIFFTAG_YRESOLUTION, &y_res))
269 /* Sanity check the doc */
270 if (width <= 0 || height <= 0)
273 rowstride = width * 4;
274 if (rowstride / 4 != width)
278 bytes = height * rowstride;
279 if (bytes / rowstride != height)
283 pixels = g_try_malloc (bytes);
287 pixbuf = gdk_pixbuf_new_from_data (pixels, GDK_COLORSPACE_RGB, TRUE, 8,
288 width, height, rowstride,
289 (GdkPixbufDestroyNotify) g_free, NULL);
291 pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8, width, height);
292 TIFFReadRGBAImageOriented (tiff_document->tiff, width, height, (uint32 *)gdk_pixbuf_get_pixels (pixbuf), ORIENTATION_TOPLEFT, 1);
295 scaled_pixbuf = gdk_pixbuf_scale_simple (pixbuf,
297 height * rc->scale * (x_res/y_res),
298 GDK_INTERP_BILINEAR);
299 g_object_unref (pixbuf);
301 rotated_pixbuf = rotate_pixbuf (document, scaled_pixbuf);
302 g_object_unref (scaled_pixbuf);
304 return rotated_pixbuf;
308 tiff_document_finalize (GObject *object)
310 TiffDocument *tiff_document = TIFF_DOCUMENT (object);
312 TIFFClose (tiff_document->tiff);
314 G_OBJECT_CLASS (tiff_document_parent_class)->finalize (object);
318 tiff_document_class_init (TiffDocumentClass *klass)
320 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
322 gobject_class->finalize = tiff_document_finalize;
326 tiff_document_can_get_text (EvDocument *document)
331 static EvDocumentInfo *
332 tiff_document_get_info (EvDocument *document)
334 EvDocumentInfo *info;
336 info = g_new0 (EvDocumentInfo, 1);
337 info->fields_mask = 0;
343 tiff_document_document_iface_init (EvDocumentIface *iface)
345 iface->load = tiff_document_load;
346 iface->save = tiff_document_save;
347 iface->can_get_text = tiff_document_can_get_text;
348 iface->get_n_pages = tiff_document_get_n_pages;
349 iface->get_page_size = tiff_document_get_page_size;
350 iface->render_pixbuf = tiff_document_render_pixbuf;
351 iface->get_info = tiff_document_get_info;
352 iface->get_orientation = tiff_document_get_orientation;
353 iface->set_orientation = tiff_document_set_orientation;
357 tiff_document_thumbnails_get_thumbnail (EvDocumentThumbnails *document,
366 tiff_document_get_page_size (EV_DOCUMENT (document),
370 rc = ev_render_context_new (EV_ORIENTATION_PORTRAIT, page, size/w);
371 pixbuf = tiff_document_render_pixbuf (EV_DOCUMENT (document), rc);
372 g_object_unref (G_OBJECT (rc));
376 GdkPixbuf *tmp_pixbuf = pixbuf;
377 pixbuf = ev_document_misc_get_thumbnail_frame (-1, -1, tmp_pixbuf);
378 g_object_unref (tmp_pixbuf);
385 tiff_document_thumbnails_get_dimensions (EvDocumentThumbnails *document,
387 gint suggested_width,
394 tiff_document_get_page_size (EV_DOCUMENT (document),
397 g_return_if_fail (w > 0);
399 *width = suggested_width;
400 *height = (gint) (suggested_width * page_ratio);
404 tiff_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface)
406 iface->get_thumbnail = tiff_document_thumbnails_get_thumbnail;
407 iface->get_dimensions = tiff_document_thumbnails_get_dimensions;
410 /* postscript exporter implementation */
413 tiff_document_ps_export_begin (EvPSExporter *exporter, const char *filename,
414 int first_page, int last_page)
416 TiffDocument *document = TIFF_DOCUMENT (exporter);
418 document->ps_export_ctx = tiff2ps_context_new(filename);
422 tiff_document_ps_export_do_page (EvPSExporter *exporter, int page)
424 TiffDocument *document = TIFF_DOCUMENT (exporter);
426 if (document->ps_export_ctx == NULL)
428 if (TIFFSetDirectory (document->tiff, page) != 1)
430 tiff2ps_process_page (document->ps_export_ctx, document->tiff,
435 tiff_document_ps_export_end (EvPSExporter *exporter)
437 TiffDocument *document = TIFF_DOCUMENT (exporter);
439 if (document->ps_export_ctx == NULL)
441 tiff2ps_context_finalize(document->ps_export_ctx);
445 tiff_document_document_ps_exporter_iface_init (EvPSExporterIface *iface)
447 iface->begin = tiff_document_ps_export_begin;
448 iface->do_page = tiff_document_ps_export_do_page;
449 iface->end = tiff_document_ps_export_end;
453 tiff_document_init (TiffDocument *tiff_document)
455 tiff_document->n_pages = -1;
456 tiff_document->orientation = EV_ORIENTATION_PORTRAIT;