diff options
Diffstat (limited to 'backend/pixbuf/pixbuf-document.c')
| -rw-r--r-- | backend/pixbuf/pixbuf-document.c | 222 |
1 files changed, 222 insertions, 0 deletions
diff --git a/backend/pixbuf/pixbuf-document.c b/backend/pixbuf/pixbuf-document.c new file mode 100644 index 0000000..e3d064d --- /dev/null +++ b/backend/pixbuf/pixbuf-document.c @@ -0,0 +1,222 @@ +/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */ +/* + * Copyright (C) 2004, Anders Carlsson <andersca@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. + */ + +#include "pixbuf-document.h" +#include "ev-document-thumbnails.h" + +struct _PixbufDocumentClass +{ + GObjectClass parent_class; +}; + +struct _PixbufDocument +{ + GObject parent_instance; + + GdkPixbuf *pixbuf; + + gchar *uri; +}; + +typedef struct _PixbufDocumentClass PixbufDocumentClass; + +static void pixbuf_document_document_iface_init (EvDocumentIface *iface); +static void pixbuf_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface); + +G_DEFINE_TYPE_WITH_CODE (PixbufDocument, pixbuf_document, G_TYPE_OBJECT, + { G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT, + pixbuf_document_document_iface_init); + G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_THUMBNAILS, + pixbuf_document_document_thumbnails_iface_init) + }); + +static gboolean +pixbuf_document_load (EvDocument *document, + const char *uri, + GError **error) +{ + PixbufDocument *pixbuf_document = PIXBUF_DOCUMENT (document); + + gchar *filename; + GdkPixbuf *pixbuf; + + /* FIXME: We could actually load uris */ + filename = g_filename_from_uri (uri, NULL, error); + if (!filename) + return FALSE; + + pixbuf = gdk_pixbuf_new_from_file (filename, error); + + if (!pixbuf) + return FALSE; + + pixbuf_document->pixbuf = pixbuf; + g_free (pixbuf_document->uri); + pixbuf_document->uri = g_strdup (uri); + + return TRUE; +} + +static gboolean +pixbuf_document_save (EvDocument *document, + const char *uri, + GError **error) +{ + PixbufDocument *pixbuf_document = PIXBUF_DOCUMENT (document); + + return ev_xfer_uri_simple (pixbuf_document->uri, uri, error); +} + +static int +pixbuf_document_get_n_pages (EvDocument *document) +{ + return 1; +} + +static void +pixbuf_document_get_page_size (EvDocument *document, + int page, + double *width, + double *height) +{ + PixbufDocument *pixbuf_document = PIXBUF_DOCUMENT (document); + + *width = gdk_pixbuf_get_width (pixbuf_document->pixbuf); + *height = gdk_pixbuf_get_height (pixbuf_document->pixbuf); +} + +static GdkPixbuf* +pixbuf_document_render_pixbuf (EvDocument *document, + EvRenderContext *rc) +{ + PixbufDocument *pixbuf_document = PIXBUF_DOCUMENT (document); + GdkPixbuf *scaled_pixbuf, *rotated_pixbuf; + + scaled_pixbuf = gdk_pixbuf_scale_simple (pixbuf_document->pixbuf, + gdk_pixbuf_get_width (pixbuf_document->pixbuf) * rc->scale, + gdk_pixbuf_get_height (pixbuf_document->pixbuf) * rc->scale, + GDK_INTERP_BILINEAR); + + rotated_pixbuf = gdk_pixbuf_rotate_simple (scaled_pixbuf, 360 - rc->rotation); + g_object_unref (scaled_pixbuf); + + return rotated_pixbuf; +} + +static void +pixbuf_document_finalize (GObject *object) +{ + PixbufDocument *pixbuf_document = PIXBUF_DOCUMENT (object); + + g_object_unref (pixbuf_document->pixbuf); + g_free (pixbuf_document->uri); + + G_OBJECT_CLASS (pixbuf_document_parent_class)->finalize (object); +} + +static void +pixbuf_document_class_init (PixbufDocumentClass *klass) +{ + GObjectClass *gobject_class = G_OBJECT_CLASS (klass); + + gobject_class->finalize = pixbuf_document_finalize; +} + +static gboolean +pixbuf_document_can_get_text (EvDocument *document) +{ + return FALSE; +} + +static EvDocumentInfo * +pixbuf_document_get_info (EvDocument *document) +{ + EvDocumentInfo *info; + + info = g_new0 (EvDocumentInfo, 1); + info->fields_mask = 0; + + return info; +} + +static void +pixbuf_document_document_iface_init (EvDocumentIface *iface) +{ + iface->load = pixbuf_document_load; + iface->save = pixbuf_document_save; + iface->can_get_text = pixbuf_document_can_get_text; + iface->get_n_pages = pixbuf_document_get_n_pages; + iface->get_page_size = pixbuf_document_get_page_size; + iface->render_pixbuf = pixbuf_document_render_pixbuf; + iface->get_info = pixbuf_document_get_info; +} + +static GdkPixbuf * +pixbuf_document_thumbnails_get_thumbnail (EvDocumentThumbnails *document, + gint page, + gint rotation, + gint size, + gboolean border) +{ + PixbufDocument *pixbuf_document = PIXBUF_DOCUMENT (document); + GdkPixbuf *pixbuf, *rotated_pixbuf; + gdouble scale_factor; + gint height; + + scale_factor = (gdouble)size / gdk_pixbuf_get_width (pixbuf_document->pixbuf); + + height = gdk_pixbuf_get_height (pixbuf_document->pixbuf) * scale_factor; + + pixbuf = gdk_pixbuf_scale_simple (pixbuf_document->pixbuf, size, height, + GDK_INTERP_BILINEAR); + + rotated_pixbuf = gdk_pixbuf_rotate_simple (pixbuf, 360 - rotation); + g_object_unref (pixbuf); + + return rotated_pixbuf; +} + +static void +pixbuf_document_thumbnails_get_dimensions (EvDocumentThumbnails *document, + gint page, + gint suggested_width, + gint *width, + gint *height) +{ + PixbufDocument *pixbuf_document = PIXBUF_DOCUMENT (document); + gdouble page_ratio; + + page_ratio = ((double)gdk_pixbuf_get_height (pixbuf_document->pixbuf)) / + gdk_pixbuf_get_width (pixbuf_document->pixbuf); + *width = suggested_width; + *height = (gint) (suggested_width * page_ratio); +} + +static void +pixbuf_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface) +{ + iface->get_thumbnail = pixbuf_document_thumbnails_get_thumbnail; + iface->get_dimensions = pixbuf_document_thumbnails_get_dimensions; +} + + +static void +pixbuf_document_init (PixbufDocument *pixbuf_document) +{ +} |