diff options
Diffstat (limited to 'tiff/tiff-document.c')
| -rw-r--r-- | tiff/tiff-document.c | 437 |
1 files changed, 0 insertions, 437 deletions
diff --git a/tiff/tiff-document.c b/tiff/tiff-document.c deleted file mode 100644 index 24af05f..0000000 --- a/tiff/tiff-document.c +++ /dev/null @@ -1,437 +0,0 @@ -/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */ -/* - * Copyright (C) 2005, Jonathan Blandford <jrb@gnome.org> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2, or (at your option) - * any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. - */ - -/* FIXME: Should probably buffer calls to libtiff with TIFFSetWarningHandler - */ - -#include <stdio.h> -#include <glib.h> - -#include "tiffio.h" -#include "tiff2ps.h" -#include "tiff-document.h" -#include "ev-document-misc.h" -#include "ev-document-thumbnails.h" -#include "ev-file-exporter.h" - -struct _TiffDocumentClass -{ - GObjectClass parent_class; -}; - -struct _TiffDocument -{ - GObject parent_instance; - - TIFF *tiff; - gint n_pages; - TIFF2PSContext *ps_export_ctx; - - gchar *uri; -}; - -typedef struct _TiffDocumentClass TiffDocumentClass; - -static void tiff_document_document_iface_init (EvDocumentIface *iface); -static void tiff_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface); -static void tiff_document_document_file_exporter_iface_init (EvFileExporterIface *iface); - -G_DEFINE_TYPE_WITH_CODE (TiffDocument, tiff_document, G_TYPE_OBJECT, - { G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT, - tiff_document_document_iface_init); - G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_THUMBNAILS, - tiff_document_document_thumbnails_iface_init); - G_IMPLEMENT_INTERFACE (EV_TYPE_FILE_EXPORTER, - tiff_document_document_file_exporter_iface_init); - }); - -static TIFFErrorHandler orig_error_handler = NULL; -static TIFFErrorHandler orig_warning_handler = NULL; - -static void -push_handlers (void) -{ - orig_error_handler = TIFFSetErrorHandler (NULL); - orig_warning_handler = TIFFSetWarningHandler (NULL); -} - -static void -pop_handlers (void) -{ - TIFFSetErrorHandler (orig_error_handler); - TIFFSetWarningHandler (orig_warning_handler); -} - -static gboolean -tiff_document_load (EvDocument *document, - const char *uri, - GError **error) -{ - TiffDocument *tiff_document = TIFF_DOCUMENT (document); - gchar *filename; - TIFF *tiff; - - push_handlers (); - filename = g_filename_from_uri (uri, NULL, error); - if (!filename) - { - pop_handlers (); - return FALSE; - } - - tiff = TIFFOpen (filename, "r"); - if (tiff) - { - guint32 w, h; - /* FIXME: unused data? why bother here */ - TIFFGetField(tiff, TIFFTAG_IMAGEWIDTH, &w); - TIFFGetField(tiff, TIFFTAG_IMAGELENGTH, &h); - } - if (!tiff) - { - pop_handlers (); - return FALSE; - } - tiff_document->tiff = tiff; - g_free (tiff_document->uri); - g_free (filename); - tiff_document->uri = g_strdup (uri); - - pop_handlers (); - return TRUE; -} - -static gboolean -tiff_document_save (EvDocument *document, - const char *uri, - GError **error) -{ - TiffDocument *tiff_document = TIFF_DOCUMENT (document); - - return ev_xfer_uri_simple (tiff_document->uri, uri, error); -} - -static int -tiff_document_get_n_pages (EvDocument *document) -{ - TiffDocument *tiff_document = TIFF_DOCUMENT (document); - - g_return_val_if_fail (TIFF_IS_DOCUMENT (document), 0); - g_return_val_if_fail (tiff_document->tiff != NULL, 0); - - if (tiff_document->n_pages == -1) - { - push_handlers (); - tiff_document->n_pages = 0; - do - { - tiff_document->n_pages ++; - } - while (TIFFReadDirectory (tiff_document->tiff)); - pop_handlers (); - } - - return tiff_document->n_pages; -} - -static void -tiff_document_get_page_size (EvDocument *document, - int page, - double *width, - double *height) -{ - guint32 w, h; - gfloat x_res, y_res; - TiffDocument *tiff_document = TIFF_DOCUMENT (document); - - g_return_if_fail (TIFF_IS_DOCUMENT (document)); - g_return_if_fail (tiff_document->tiff != NULL); - - push_handlers (); - if (TIFFSetDirectory (tiff_document->tiff, page) != 1) - { - pop_handlers (); - return; - } - - TIFFGetField (tiff_document->tiff, TIFFTAG_IMAGEWIDTH, &w); - TIFFGetField (tiff_document->tiff, TIFFTAG_IMAGELENGTH, &h); - TIFFGetField (tiff_document->tiff, TIFFTAG_XRESOLUTION, &x_res); - TIFFGetField (tiff_document->tiff, TIFFTAG_YRESOLUTION, &y_res); - h = h * (x_res / y_res); - - *width = w; - *height = h; - - pop_handlers (); -} - -static GdkPixbuf * -tiff_document_render_pixbuf (EvDocument *document, - EvRenderContext *rc) -{ - TiffDocument *tiff_document = TIFF_DOCUMENT (document); - int width, height; - float x_res, y_res; - gint rowstride, bytes; - guchar *pixels = NULL; - GdkPixbuf *pixbuf; - GdkPixbuf *scaled_pixbuf; - GdkPixbuf *rotated_pixbuf; - - g_return_val_if_fail (TIFF_IS_DOCUMENT (document), 0); - g_return_val_if_fail (tiff_document->tiff != NULL, 0); - - push_handlers (); - if (TIFFSetDirectory (tiff_document->tiff, rc->page) != 1) - { - pop_handlers (); - return NULL; - } - - if (!TIFFGetField (tiff_document->tiff, TIFFTAG_IMAGEWIDTH, &width)) - { - pop_handlers (); - return NULL; - } - - if (! TIFFGetField (tiff_document->tiff, TIFFTAG_IMAGELENGTH, &height)) - { - pop_handlers (); - return NULL; - } - - if (!TIFFGetField (tiff_document->tiff, TIFFTAG_XRESOLUTION, &x_res)) - { - pop_handlers (); - return NULL; - } - - if (! TIFFGetField (tiff_document->tiff, TIFFTAG_YRESOLUTION, &y_res)) - { - pop_handlers (); - return NULL; - } - - pop_handlers (); - - /* Sanity check the doc */ - if (width <= 0 || height <= 0) - return NULL; - - rowstride = width * 4; - if (rowstride / 4 != width) - /* overflow */ - return NULL; - - bytes = height * rowstride; - if (bytes / rowstride != height) - /* overflow */ - return NULL; - - pixels = g_try_malloc (bytes); - if (!pixels) - return NULL; - - pixbuf = gdk_pixbuf_new_from_data (pixels, GDK_COLORSPACE_RGB, TRUE, 8, - width, height, rowstride, - (GdkPixbufDestroyNotify) g_free, NULL); - - pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8, width, height); - TIFFReadRGBAImageOriented (tiff_document->tiff, width, height, (uint32 *)gdk_pixbuf_get_pixels (pixbuf), ORIENTATION_TOPLEFT, 1); - pop_handlers (); - - scaled_pixbuf = gdk_pixbuf_scale_simple (pixbuf, - width * rc->scale, - height * rc->scale * (x_res/y_res), - GDK_INTERP_BILINEAR); - g_object_unref (pixbuf); - - rotated_pixbuf = gdk_pixbuf_rotate_simple (scaled_pixbuf, 360 - rc->rotation); - g_object_unref (scaled_pixbuf); - - return rotated_pixbuf; -} - -static void -tiff_document_finalize (GObject *object) -{ - TiffDocument *tiff_document = TIFF_DOCUMENT (object); - - if (tiff_document->tiff) - TIFFClose (tiff_document->tiff); - if (tiff_document->uri) - g_free (tiff_document->uri); - - G_OBJECT_CLASS (tiff_document_parent_class)->finalize (object); -} - -static void -tiff_document_class_init (TiffDocumentClass *klass) -{ - GObjectClass *gobject_class = G_OBJECT_CLASS (klass); - - gobject_class->finalize = tiff_document_finalize; -} - -static gboolean -tiff_document_can_get_text (EvDocument *document) -{ - return FALSE; -} - -static EvDocumentInfo * -tiff_document_get_info (EvDocument *document) -{ - EvDocumentInfo *info; - - info = g_new0 (EvDocumentInfo, 1); - info->fields_mask = 0; - - return info; -} - -static void -tiff_document_document_iface_init (EvDocumentIface *iface) -{ - iface->load = tiff_document_load; - iface->save = tiff_document_save; - iface->can_get_text = tiff_document_can_get_text; - iface->get_n_pages = tiff_document_get_n_pages; - iface->get_page_size = tiff_document_get_page_size; - iface->render_pixbuf = tiff_document_render_pixbuf; - iface->get_info = tiff_document_get_info; -} - -static GdkPixbuf * -tiff_document_thumbnails_get_thumbnail (EvDocumentThumbnails *document, - gint page, - gint rotation, - gint size, - gboolean border) -{ - EvRenderContext *rc; - GdkPixbuf *pixbuf; - gdouble w, h; - - tiff_document_get_page_size (EV_DOCUMENT (document), - page, - &w, &h); - - rc = ev_render_context_new (rotation, page, size/w); - pixbuf = tiff_document_render_pixbuf (EV_DOCUMENT (document), rc); - g_object_unref (G_OBJECT (rc)); - - if (border) - { - GdkPixbuf *tmp_pixbuf = pixbuf; - pixbuf = ev_document_misc_get_thumbnail_frame (-1, -1, 0, tmp_pixbuf); - g_object_unref (tmp_pixbuf); - } - - return pixbuf; -} - -static void -tiff_document_thumbnails_get_dimensions (EvDocumentThumbnails *document, - gint page, - gint suggested_width, - gint *width, - gint *height) -{ - gdouble page_ratio; - gdouble w, h; - - tiff_document_get_page_size (EV_DOCUMENT (document), - page, - &w, &h); - g_return_if_fail (w > 0); - page_ratio = h/w; - *width = suggested_width; - *height = (gint) (suggested_width * page_ratio); -} - -static void -tiff_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface) -{ - iface->get_thumbnail = tiff_document_thumbnails_get_thumbnail; - iface->get_dimensions = tiff_document_thumbnails_get_dimensions; -} - -/* postscript exporter implementation */ - -static gboolean -tiff_document_file_exporter_format_supported (EvFileExporter *exporter, - EvFileExporterFormat format) -{ - return (format == EV_FILE_FORMAT_PS); -} - -static void -tiff_document_file_exporter_begin (EvFileExporter *exporter, - EvFileExporterFormat format, - const char *filename, - int first_page, - int last_page, - double width, - double height, - gboolean duplex) -{ - TiffDocument *document = TIFF_DOCUMENT (exporter); - - document->ps_export_ctx = tiff2ps_context_new(filename); -} - -static void -tiff_document_file_exporter_do_page (EvFileExporter *exporter, EvRenderContext *rc) -{ - TiffDocument *document = TIFF_DOCUMENT (exporter); - - if (document->ps_export_ctx == NULL) - return; - if (TIFFSetDirectory (document->tiff, rc->page) != 1) - return; - tiff2ps_process_page (document->ps_export_ctx, document->tiff, - 0, 0, 0, 0, 0); -} - -static void -tiff_document_file_exporter_end (EvFileExporter *exporter) -{ - TiffDocument *document = TIFF_DOCUMENT (exporter); - - if (document->ps_export_ctx == NULL) - return; - tiff2ps_context_finalize(document->ps_export_ctx); -} - -static void -tiff_document_document_file_exporter_iface_init (EvFileExporterIface *iface) -{ - iface->format_supported = tiff_document_file_exporter_format_supported; - iface->begin = tiff_document_file_exporter_begin; - iface->do_page = tiff_document_file_exporter_do_page; - iface->end = tiff_document_file_exporter_end; -} - -static void -tiff_document_init (TiffDocument *tiff_document) -{ - tiff_document->n_pages = -1; -} |