2 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */
4 * Copyright (C) 2005, Jonathan Blandford <jrb@gnome.org>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2, or (at your option)
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
21 /* FIXME: Shoudl probably buffer calls to libtiff with TIFFSetWarningHandler
24 #include "tiff-document.h"
25 #include "ev-document-thumbnails.h"
26 #include "ev-document-misc.h"
28 struct _TiffDocumentClass
30 GObjectClass parent_class;
35 GObject parent_instance;
39 EvOrientation orientation;
42 typedef struct _TiffDocumentClass TiffDocumentClass;
44 static void tiff_document_document_iface_init (EvDocumentIface *iface);
45 static void tiff_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface);
47 G_DEFINE_TYPE_WITH_CODE (TiffDocument, tiff_document, G_TYPE_OBJECT,
48 { G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT,
49 tiff_document_document_iface_init);
50 G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_THUMBNAILS,
51 tiff_document_document_thumbnails_iface_init);
54 static TIFFErrorHandler orig_error_handler = NULL;
55 static TIFFErrorHandler orig_warning_handler = NULL;
60 orig_error_handler = TIFFSetErrorHandler (NULL);
61 orig_warning_handler = TIFFSetWarningHandler (NULL);
67 TIFFSetErrorHandler (orig_error_handler);
68 TIFFSetWarningHandler (orig_warning_handler);
72 tiff_document_load (EvDocument *document,
76 TiffDocument *tiff_document = TIFF_DOCUMENT (document);
81 /* FIXME: We could actually load uris */
82 filename = g_filename_from_uri (uri, NULL, error);
89 tiff = TIFFOpen (filename, "r");
93 /* FIXME: unused data? why bother here */
94 TIFFGetField(tiff, TIFFTAG_IMAGEWIDTH, &w);
95 TIFFGetField(tiff, TIFFTAG_IMAGELENGTH, &h);
102 tiff_document->tiff = tiff;
109 tiff_document_save (EvDocument *document,
117 tiff_document_get_n_pages (EvDocument *document)
119 TiffDocument *tiff_document = TIFF_DOCUMENT (document);
121 g_return_val_if_fail (TIFF_IS_DOCUMENT (document), 0);
122 g_return_val_if_fail (tiff_document->tiff != NULL, 0);
124 if (tiff_document->n_pages == -1)
127 tiff_document->n_pages = 0;
130 tiff_document->n_pages ++;
132 while (TIFFReadDirectory (tiff_document->tiff));
136 return tiff_document->n_pages;
140 tiff_document_get_page_size (EvDocument *document,
147 TiffDocument *tiff_document = TIFF_DOCUMENT (document);
149 g_return_if_fail (TIFF_IS_DOCUMENT (document));
150 g_return_if_fail (tiff_document->tiff != NULL);
153 if (TIFFSetDirectory (tiff_document->tiff, page) != 1)
159 TIFFGetField (tiff_document->tiff, TIFFTAG_IMAGEWIDTH, &w);
160 TIFFGetField (tiff_document->tiff, TIFFTAG_IMAGELENGTH, &h);
161 TIFFGetField (tiff_document->tiff, TIFFTAG_XRESOLUTION, &x_res);
162 TIFFGetField (tiff_document->tiff, TIFFTAG_YRESOLUTION, &y_res);
163 h = h * (x_res / y_res);
165 if (tiff_document->orientation == EV_ORIENTATION_PORTRAIT ||
166 tiff_document->orientation == EV_ORIENTATION_UPSIDEDOWN) {
177 tiff_document_get_orientation (EvDocument *document)
179 TiffDocument *tiff_document = TIFF_DOCUMENT (document);
181 return tiff_document->orientation;
185 tiff_document_set_orientation (EvDocument *document,
186 EvOrientation orientation)
188 TiffDocument *tiff_document = TIFF_DOCUMENT (document);
190 tiff_document->orientation = orientation;
194 rotate_pixbuf (EvDocument *document, GdkPixbuf *pixbuf)
196 TiffDocument *tiff_document = TIFF_DOCUMENT (document);
198 switch (tiff_document->orientation)
200 case EV_ORIENTATION_LANDSCAPE:
201 return gdk_pixbuf_rotate_simple (pixbuf, 90);
202 case EV_ORIENTATION_UPSIDEDOWN:
203 return gdk_pixbuf_rotate_simple (pixbuf, 180);
204 case EV_ORIENTATION_SEASCAPE:
205 return gdk_pixbuf_rotate_simple (pixbuf, 270);
207 return g_object_ref (pixbuf);
212 tiff_document_render_pixbuf (EvDocument *document,
215 TiffDocument *tiff_document = TIFF_DOCUMENT (document);
218 gint rowstride, bytes;
219 guchar *pixels = NULL;
221 GdkPixbuf *scaled_pixbuf;
222 GdkPixbuf *rotated_pixbuf;
224 g_return_val_if_fail (TIFF_IS_DOCUMENT (document), 0);
225 g_return_val_if_fail (tiff_document->tiff != NULL, 0);
228 if (TIFFSetDirectory (tiff_document->tiff, rc->page) != 1)
234 if (!TIFFGetField (tiff_document->tiff, TIFFTAG_IMAGEWIDTH, &width))
240 if (! TIFFGetField (tiff_document->tiff, TIFFTAG_IMAGELENGTH, &height))
246 if (!TIFFGetField (tiff_document->tiff, TIFFTAG_XRESOLUTION, &x_res))
252 if (! TIFFGetField (tiff_document->tiff, TIFFTAG_YRESOLUTION, &y_res))
260 /* Sanity check the doc */
261 if (width <= 0 || height <= 0)
264 rowstride = width * 4;
265 if (rowstride / 4 != width)
269 bytes = height * rowstride;
270 if (bytes / rowstride != height)
274 pixels = g_try_malloc (bytes);
278 pixbuf = gdk_pixbuf_new_from_data (pixels, GDK_COLORSPACE_RGB, TRUE, 8,
279 width, height, rowstride,
280 (GdkPixbufDestroyNotify) g_free, NULL);
282 pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8, width, height);
283 TIFFReadRGBAImageOriented (tiff_document->tiff, width, height, (uint32 *)gdk_pixbuf_get_pixels (pixbuf), ORIENTATION_TOPLEFT, 1);
286 scaled_pixbuf = gdk_pixbuf_scale_simple (pixbuf,
288 height * rc->scale * (x_res/y_res),
289 GDK_INTERP_BILINEAR);
290 g_object_unref (pixbuf);
292 rotated_pixbuf = rotate_pixbuf (document, scaled_pixbuf);
293 g_object_unref (scaled_pixbuf);
295 return rotated_pixbuf;
299 tiff_document_finalize (GObject *object)
301 TiffDocument *tiff_document = TIFF_DOCUMENT (object);
303 TIFFClose (tiff_document->tiff);
305 G_OBJECT_CLASS (tiff_document_parent_class)->finalize (object);
309 tiff_document_class_init (TiffDocumentClass *klass)
311 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
313 gobject_class->finalize = tiff_document_finalize;
317 tiff_document_can_get_text (EvDocument *document)
322 static EvDocumentInfo *
323 tiff_document_get_info (EvDocument *document)
325 EvDocumentInfo *info;
327 info = g_new0 (EvDocumentInfo, 1);
328 info->fields_mask = 0;
334 tiff_document_document_iface_init (EvDocumentIface *iface)
336 iface->load = tiff_document_load;
337 iface->save = tiff_document_save;
338 iface->can_get_text = tiff_document_can_get_text;
339 iface->get_n_pages = tiff_document_get_n_pages;
340 iface->get_page_size = tiff_document_get_page_size;
341 iface->render_pixbuf = tiff_document_render_pixbuf;
342 iface->get_info = tiff_document_get_info;
343 iface->get_orientation = tiff_document_get_orientation;
344 iface->set_orientation = tiff_document_set_orientation;
348 tiff_document_thumbnails_get_thumbnail (EvDocumentThumbnails *document,
357 tiff_document_get_page_size (EV_DOCUMENT (document),
361 rc = ev_render_context_new (EV_ORIENTATION_PORTRAIT, page, size/w);
362 pixbuf = tiff_document_render_pixbuf (EV_DOCUMENT (document), rc);
363 g_object_unref (G_OBJECT (rc));
367 GdkPixbuf *tmp_pixbuf = pixbuf;
368 pixbuf = ev_document_misc_get_thumbnail_frame (-1, -1, tmp_pixbuf);
369 g_object_unref (tmp_pixbuf);
376 tiff_document_thumbnails_get_dimensions (EvDocumentThumbnails *document,
378 gint suggested_width,
385 tiff_document_get_page_size (EV_DOCUMENT (document),
388 g_return_if_fail (w > 0);
390 *width = suggested_width;
391 *height = (gint) (suggested_width * page_ratio);
395 tiff_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface)
397 iface->get_thumbnail = tiff_document_thumbnails_get_thumbnail;
398 iface->get_dimensions = tiff_document_thumbnails_get_dimensions;
403 tiff_document_init (TiffDocument *tiff_document)
405 tiff_document->n_pages = -1;
406 tiff_document->orientation = EV_ORIENTATION_PORTRAIT;