1 /* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 4; tab-width: 4 -*- */
3 * viking -- GPS Data and Topo Analyzer, Explorer, and Manager
5 * Copyright (C) 2014, Rob Norris <rw_norris@hotmail.com>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
28 #include "geotag_exif.h"
38 * Returns: Whether the file is a JPG.
39 * Uses Magic library if available to determine the jpgness.
40 * Otherwise uses a rudimentary extension name check.
42 gboolean a_jpg_magic_check ( const gchar *filename )
44 gboolean is_jpg = FALSE;
46 magic_t myt = magic_open ( MAGIC_CONTINUE|MAGIC_ERROR|MAGIC_MIME );
49 // We have to 'package' the magic database ourselves :(
50 // --> %PROGRAM FILES%\Viking\magic.mgc
51 magic_load ( myt, "magic.mgc" );
54 magic_load ( myt, NULL );
56 const char* magic = magic_file (myt, filename);
57 if ( g_strcmp0 (magic, "image/jpeg; charset=binary") == 0 )
64 is_jpg = a_file_check_ext ( filename, ".jpg" );
70 * Load a single JPG into a Trackwaypoint Layer as a waypoint
72 * @top: The Aggregate layer that a new TRW layer may be created in
73 * @filename: The JPG filename
76 * Returns: Whether the loading was a success or not
78 * If the JPG has geotag information then the waypoint will be created with the appropriate position.
79 * Otherwise the waypoint will be positioned at the current screen center.
80 * If a TRW layer is already selected the waypoint will be created in that layer.
82 gboolean a_jpg_load_file ( VikAggregateLayer *top, const gchar *filename, VikViewport *vvp )
84 gboolean auto_zoom = TRUE;
85 VikWindow *vw = (VikWindow *)(VIK_GTK_WINDOW_FROM_LAYER(VIK_LAYER(top)));
86 VikLayersPanel *vlp = vik_window_layers_panel ( vw );
87 // Auto load into TrackWaypoint layer if one is selected
88 VikLayer *vtl = vik_layers_panel_get_selected ( vlp );
90 gboolean create_layer = FALSE;
91 if ( vtl == NULL || vtl->type != VIK_LAYER_TRW ) {
92 // Create layer if necessary
93 vtl = vik_layer_create ( VIK_LAYER_TRW, vvp, FALSE );
94 vik_layer_rename ( vtl, a_file_basename ( filename ) );
99 VikWaypoint *wp = NULL;
101 wp = a_geotag_create_waypoint_from_file ( filename, vik_viewport_get_coord_mode (vvp), &name );
104 // Create name if geotag method didn't return one
106 name = g_strdup ( a_file_basename ( filename ) );
107 vik_trw_layer_filein_add_waypoint ( VIK_TRW_LAYER(vtl), name, wp );
111 wp = vik_waypoint_new ();
113 vik_trw_layer_filein_add_waypoint ( VIK_TRW_LAYER(vtl), (gchar*) a_file_basename(filename), wp );
114 vik_waypoint_set_image ( wp, filename );
115 // Simply set position to the current center
116 wp->coord = *( vik_viewport_get_center ( vvp ) );
120 // Complete the setup
121 vik_layer_post_read ( vtl, vvp, TRUE );
123 vik_aggregate_layer_add_layer ( top, vtl, FALSE );
125 vik_trw_layer_auto_set_view ( VIK_TRW_LAYER(vtl), vvp );
127 // ATM This routine can't fail