[andy/viking.git] / src / vikwmscmapsource.c

/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 4; tab-width: 4 -*- */
/*
 * viking
 * Copyright (C) 2010, Guilhem Bonnefille <guilhem.bonnefille@gmail.com>
 * 
 * viking 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 3 of the License, or
 * (at your option) any later version.
 * 
 * viking 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, see <http://www.gnu.org/licenses/>.
 */
 
 /**
  * SECTION:vikwmscmapsource
  * @short_description: the class for WMS/WMS-C oriented map sources
  * 
  * The #VikWmscMapSource class handles WMS/WMS-C oriented map sources.
  * 
  * http://wiki.osgeo.org/wiki/WMS_Tile_Caching
  */
 
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#ifdef HAVE_MATH_H
#include <math.h>
#endif

#include "globals.h"
#include "vikwmscmapsource.h"
#include "maputils.h"

static gboolean _coord_to_mapcoord ( VikMapSource *self, const VikCoord *src, gdouble xzoom, gdouble yzoom, MapCoord *dest );
static void _mapcoord_to_center_coord ( VikMapSource *self, MapCoord *src, VikCoord *dest );
static gboolean _supports_download_only_new ( VikMapSource *self );
static gboolean _is_direct_file_access ( VikMapSource *self );

static gchar *_get_uri( VikMapSourceDefault *self, MapCoord *src );
static gchar *_get_hostname( VikMapSourceDefault *self );
static DownloadMapOptions *_get_download_options( VikMapSourceDefault *self );

typedef struct _VikWmscMapSourcePrivate VikWmscMapSourcePrivate;
struct _VikWmscMapSourcePrivate
{
  gchar *hostname;
  gchar *url;
  DownloadMapOptions options;
};

#define VIK_WMSC_MAP_SOURCE_PRIVATE(o)  (G_TYPE_INSTANCE_GET_PRIVATE ((o), VIK_TYPE_WMSC_MAP_SOURCE, VikWmscMapSourcePrivate))

/* properties */
enum
{
  PROP_0,

  PROP_HOSTNAME,
  PROP_URL,
  PROP_REFERER,
  PROP_FOLLOW_LOCATION,
  PROP_CHECK_FILE_SERVER_TIME,
};

G_DEFINE_TYPE (VikWmscMapSource, vik_wmsc_map_source, VIK_TYPE_MAP_SOURCE_DEFAULT);

static void
vik_wmsc_map_source_init (VikWmscMapSource *self)
{
  /* initialize the object here */
  VikWmscMapSourcePrivate *priv = VIK_WMSC_MAP_SOURCE_PRIVATE (self);

  priv->hostname = NULL;
  priv->url = NULL;
  priv->options.referer = NULL;
  priv->options.follow_location = 0;
  priv->options.check_file = a_check_map_file;
  priv->options.check_file_server_time = FALSE;

  g_object_set (G_OBJECT (self),
                "tilesize-x", 256,
                "tilesize-y", 256,
                "drawmode", VIK_VIEWPORT_DRAWMODE_LATLON,
                NULL);
}

static void
vik_wmsc_map_source_finalize (GObject *object)
{
  VikWmscMapSource *self = VIK_WMSC_MAP_SOURCE (object);
  VikWmscMapSourcePrivate *priv = VIK_WMSC_MAP_SOURCE_PRIVATE (self);

  g_free (priv->hostname);
  priv->hostname = NULL;
  g_free (priv->url);
  priv->url = NULL;
  g_free (priv->options.referer);
  priv->options.referer = NULL;

  G_OBJECT_CLASS (vik_wmsc_map_source_parent_class)->finalize (object);
}

static void
vik_wmsc_map_source_set_property (GObject      *object,
                                    guint         property_id,
                                    const GValue *value,
                                    GParamSpec   *pspec)
{
  VikWmscMapSource *self = VIK_WMSC_MAP_SOURCE (object);
  VikWmscMapSourcePrivate *priv = VIK_WMSC_MAP_SOURCE_PRIVATE (self);

  switch (property_id)
    {
    case PROP_HOSTNAME:
      g_free (priv->hostname);
      priv->hostname = g_value_dup_string (value);
      break;

    case PROP_URL:
      g_free (priv->url);
      priv->url = g_value_dup_string (value);
      break;

    case PROP_REFERER:
      g_free (priv->options.referer);
      priv->options.referer = g_value_dup_string (value);
      break;

    case PROP_FOLLOW_LOCATION:
      priv->options.follow_location = g_value_get_long (value);
      break;

    case PROP_CHECK_FILE_SERVER_TIME:
      priv->options.check_file_server_time = g_value_get_boolean (value);
      break;

    default:
      /* We don't have any other property... */
      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
      break;
    }
}

static void
vik_wmsc_map_source_get_property (GObject    *object,
                                    guint       property_id,
                                    GValue     *value,
                                    GParamSpec *pspec)
{
  VikWmscMapSource *self = VIK_WMSC_MAP_SOURCE (object);
  VikWmscMapSourcePrivate *priv = VIK_WMSC_MAP_SOURCE_PRIVATE (self);

  switch (property_id)
    {
    case PROP_HOSTNAME:
      g_value_set_string (value, priv->hostname);
      break;

    case PROP_URL:
      g_value_set_string (value, priv->url);
      break;

    case PROP_REFERER:
      g_value_set_string (value, priv->options.referer);
      break;

    case PROP_FOLLOW_LOCATION:
      g_value_set_long (value, priv->options.follow_location);
      break;

    case PROP_CHECK_FILE_SERVER_TIME:
      g_value_set_boolean (value, priv->options.check_file_server_time);
      break;
	  
    default:
      /* We don't have any other property... */
      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
      break;
    }
}

static void
vik_wmsc_map_source_class_init (VikWmscMapSourceClass *klass)
{
	GObjectClass* object_class = G_OBJECT_CLASS (klass);
	VikMapSourceClass* grandparent_class = VIK_MAP_SOURCE_CLASS (klass);
	VikMapSourceDefaultClass* parent_class = VIK_MAP_SOURCE_DEFAULT_CLASS (klass);
	GParamSpec *pspec = NULL;
		
	object_class->set_property = vik_wmsc_map_source_set_property;
    object_class->get_property = vik_wmsc_map_source_get_property;

	/* Overiding methods */
	grandparent_class->coord_to_mapcoord =        _coord_to_mapcoord;
	grandparent_class->mapcoord_to_center_coord = _mapcoord_to_center_coord;
	grandparent_class->supports_download_only_new = _supports_download_only_new;
	grandparent_class->is_direct_file_access = _is_direct_file_access;
	
	parent_class->get_uri = _get_uri;
	parent_class->get_hostname = _get_hostname;
	parent_class->get_download_options = _get_download_options;

	pspec = g_param_spec_string ("hostname",
	                             "Hostname",
	                             "The hostname of the map server",
	                             "<no-set>" /* default value */,
	                             G_PARAM_CONSTRUCT_ONLY | G_PARAM_READWRITE);
	g_object_class_install_property (object_class, PROP_HOSTNAME, pspec);

	pspec = g_param_spec_string ("url",
	                             "URL",
	                             "The template of the tiles' URL",
	                             "<no-set>" /* default value */,
	                             G_PARAM_CONSTRUCT_ONLY | G_PARAM_READWRITE);
	g_object_class_install_property (object_class, PROP_URL, pspec);

	pspec = g_param_spec_string ("referer",
	                             "Referer",
	                             "The REFERER string to use in HTTP request",
	                             NULL /* default value */,
	                             G_PARAM_CONSTRUCT_ONLY | G_PARAM_READWRITE);
	g_object_class_install_property (object_class, PROP_REFERER, pspec);
	
	pspec = g_param_spec_long ("follow-location",
	                           "Follow location",
                               "Specifies the number of retries to follow a redirect while downloading a page",
                               0  /* minimum value */,
                               G_MAXLONG /* maximum value */,
                               0  /* default value */,
                               G_PARAM_CONSTRUCT_ONLY | G_PARAM_READWRITE);
	g_object_class_install_property (object_class, PROP_FOLLOW_LOCATION, pspec);
	
	pspec = g_param_spec_boolean ("check-file-server-time",
	                              "Check file server time",
                                  "Age of current cache before redownloading tile",
                                  FALSE  /* default value */,
                                  G_PARAM_CONSTRUCT_ONLY | G_PARAM_READWRITE);
	g_object_class_install_property (object_class, PROP_CHECK_FILE_SERVER_TIME, pspec);

	g_type_class_add_private (klass, sizeof (VikWmscMapSourcePrivate));
	
	object_class->finalize = vik_wmsc_map_source_finalize;
}

static gboolean
_supports_download_only_new ( VikMapSource *self )
{
	g_return_val_if_fail (VIK_IS_WMSC_MAP_SOURCE(self), FALSE);
	
    VikWmscMapSourcePrivate *priv = VIK_WMSC_MAP_SOURCE_PRIVATE(self);
	
	return priv->options.check_file_server_time;
}

static gboolean
_is_direct_file_access ( VikMapSource *self )
{
	return FALSE;
}

static gboolean
_coord_to_mapcoord ( VikMapSource *self, const VikCoord *src, gdouble xzoom, gdouble yzoom, MapCoord *dest )
{
  g_assert ( src->mode == VIK_COORD_LATLON );

  if ( xzoom != yzoom )
    return FALSE;

  dest->scale = map_utils_mpp_to_scale ( xzoom );
  if ( dest->scale == 255 )
    return FALSE;

  /* Note : VIK_GZ(17) / xzoom / 2 = number of tile on Y axis */
  g_debug("%s: xzoom=%f yzoom=%f -> %f", __FUNCTION__,
          xzoom, yzoom, VIK_GZ(17) / xzoom / 2);
  dest->x = floor((src->east_west + 180) / 180 * VIK_GZ(17) / xzoom / 2);
  /* We should restore logic of viking:
   * tile index on Y axis follow a screen logic (top -> down)
   */
  dest->y = floor((180 - (src->north_south + 90)) / 180 * VIK_GZ(17) / xzoom / 2);
  dest->z = 0;
  g_debug("%s: %f,%f -> %d,%d", __FUNCTION__,
          src->east_west, src->north_south, dest->x, dest->y);
  return TRUE;
}

static void
_mapcoord_to_center_coord ( VikMapSource *self, MapCoord *src, VikCoord *dest )
{
  gdouble socalled_mpp;
  if (src->scale >= 0)
    socalled_mpp = VIK_GZ(src->scale);
  else
    socalled_mpp = 1.0/VIK_GZ(-src->scale);
  dest->mode = VIK_COORD_LATLON;
  dest->east_west = (src->x+0.5) * 180 / VIK_GZ(17) * socalled_mpp * 2 - 180;
  /* We should restore logic of viking:
   * tile index on Y axis follow a screen logic (top -> down)
   */
  dest->north_south = -((src->y+0.5) * 180 / VIK_GZ(17) * socalled_mpp * 2 - 90);
  g_debug("%s: %d,%d -> %f,%f", __FUNCTION__,
          src->x, src->y, dest->east_west, dest->north_south);
}

static gchar *
_get_uri( VikMapSourceDefault *self, MapCoord *src )
{
	g_return_val_if_fail (VIK_IS_WMSC_MAP_SOURCE(self), NULL);
	
    VikWmscMapSourcePrivate *priv = VIK_WMSC_MAP_SOURCE_PRIVATE(self);
	gdouble socalled_mpp;
	if (src->scale >= 0)
		socalled_mpp = VIK_GZ(src->scale);
	else
		socalled_mpp = 1.0/VIK_GZ(-src->scale);
	gdouble minx = (gdouble)src->x * 180 / VIK_GZ(17) * socalled_mpp * 2 - 180;
	gdouble maxx = (gdouble)(src->x + 1) * 180 / VIK_GZ(17) * socalled_mpp * 2 - 180;
	/* We should restore logic of viking:
     * tile index on Y axis follow a screen logic (top -> down)
     */
	gdouble miny = -((gdouble)(src->y + 1) * 180 / VIK_GZ(17) * socalled_mpp * 2 - 90);
	gdouble maxy = -((gdouble)(src->y) * 180 / VIK_GZ(17) * socalled_mpp * 2 - 90);
	
	gchar sminx[G_ASCII_DTOSTR_BUF_SIZE];
	gchar smaxx[G_ASCII_DTOSTR_BUF_SIZE];
	gchar sminy[G_ASCII_DTOSTR_BUF_SIZE];
	gchar smaxy[G_ASCII_DTOSTR_BUF_SIZE];

	g_ascii_dtostr (sminx, G_ASCII_DTOSTR_BUF_SIZE, minx);
	g_ascii_dtostr (smaxx, G_ASCII_DTOSTR_BUF_SIZE, maxx);
	g_ascii_dtostr (sminy, G_ASCII_DTOSTR_BUF_SIZE, miny);
	g_ascii_dtostr (smaxy, G_ASCII_DTOSTR_BUF_SIZE, maxy);

	gchar *uri = g_strdup_printf (priv->url, sminx, sminy, smaxx, smaxy);
	
	return uri;
} 

static gchar *
_get_hostname( VikMapSourceDefault *self )
{
	g_return_val_if_fail (VIK_IS_WMSC_MAP_SOURCE(self), NULL);
	
    VikWmscMapSourcePrivate *priv = VIK_WMSC_MAP_SOURCE_PRIVATE(self);
	return g_strdup( priv->hostname );
}

static DownloadMapOptions *
_get_download_options( VikMapSourceDefault *self )
{
	g_return_val_if_fail (VIK_IS_WMSC_MAP_SOURCE(self), NULL);
	
	VikWmscMapSourcePrivate *priv = VIK_WMSC_MAP_SOURCE_PRIVATE(self);
	return &(priv->options);
}

VikWmscMapSource *
vik_wmsc_map_source_new_with_id (guint8 id, const gchar *label, const gchar *hostname, const gchar *url)
{
	return g_object_new(VIK_TYPE_WMSC_MAP_SOURCE,
	                    "id", id, "label", label, "hostname", hostname, "url", url, NULL);
}
Commit	Line	Data
5b675792 GB	1	/* -- Mode: C; indent-tabs-mode: t; c-basic-offset: 4; tab-width: 4 -- */
	2	/*
	3	* viking
	4	* Copyright (C) 2010, Guilhem Bonnefille <guilhem.bonnefille@gmail.com>
	5	*
	6	* viking is free software: you can redistribute it and/or modify it
	7	* under the terms of the GNU General Public License as published by the
	8	* Free Software Foundation, either version 3 of the License, or
	9	* (at your option) any later version.
	10	*
	11	* viking is distributed in the hope that it will be useful, but
	12	* WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
	14	* See the GNU General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU General Public License along
	17	* with this program. If not, see <http://www.gnu.org/licenses/>.
	18	*/
	19
	20	/**
aa69d106 GB	21	* SECTION:vikwmscmapsource
	22	* @short_description: the class for WMS/WMS-C oriented map sources
	23	*
	24	* The #VikWmscMapSource class handles WMS/WMS-C oriented map sources.
	25	*
5b675792 GB	26	* http://wiki.osgeo.org/wiki/WMS_Tile_Caching
	27	*/
	28
	29	#ifdef HAVE_CONFIG_H
	30	#include "config.h"
	31	#endif
	32
	33	#ifdef HAVE_MATH_H
	34	#include <math.h>
	35	#endif
	36
	37	#include "globals.h"
	38	#include "vikwmscmapsource.h"
e1dde2a6	39	#include "maputils.h"
5b675792 GB	40
	41	static gboolean _coord_to_mapcoord ( VikMapSource self, const VikCoord src, gdouble xzoom, gdouble yzoom, MapCoord *dest );
	42	static void _mapcoord_to_center_coord ( VikMapSource self, MapCoord src, VikCoord *dest );
a748af37	43	static gboolean _supports_download_only_new ( VikMapSource *self );
a0262d5b	44	static gboolean _is_direct_file_access ( VikMapSource *self );
5b675792 GB	45
	46	static gchar _get_uri( VikMapSourceDefault self, MapCoord *src );
	47	static gchar _get_hostname( VikMapSourceDefault self );
	48	static DownloadMapOptions _get_download_options( VikMapSourceDefault self );
	49
	50	typedef struct _VikWmscMapSourcePrivate VikWmscMapSourcePrivate;
	51	struct _VikWmscMapSourcePrivate
	52	{
	53	gchar *hostname;
	54	gchar *url;
	55	DownloadMapOptions options;
	56	};
	57
	58	#define VIK_WMSC_MAP_SOURCE_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), VIK_TYPE_WMSC_MAP_SOURCE, VikWmscMapSourcePrivate))
	59
	60	/* properties */
	61	enum
	62	{
	63	PROP_0,
	64
	65	PROP_HOSTNAME,
	66	PROP_URL,
	67	PROP_REFERER,
	68	PROP_FOLLOW_LOCATION,
	69	PROP_CHECK_FILE_SERVER_TIME,
	70	};
	71
	72	G_DEFINE_TYPE (VikWmscMapSource, vik_wmsc_map_source, VIK_TYPE_MAP_SOURCE_DEFAULT);
	73
	74	static void
	75	vik_wmsc_map_source_init (VikWmscMapSource *self)
	76	{
	77	/* initialize the object here */
	78	VikWmscMapSourcePrivate *priv = VIK_WMSC_MAP_SOURCE_PRIVATE (self);
	79
	80	priv->hostname = NULL;
	81	priv->url = NULL;
	82	priv->options.referer = NULL;
	83	priv->options.follow_location = 0;
	84	priv->options.check_file = a_check_map_file;
	85	priv->options.check_file_server_time = FALSE;
	86
	87	g_object_set (G_OBJECT (self),
	88	"tilesize-x", 256,
	89	"tilesize-y", 256,
	90	"drawmode", VIK_VIEWPORT_DRAWMODE_LATLON,
	91	NULL);
	92	}
	93
	94	static void
	95	vik_wmsc_map_source_finalize (GObject *object)
	96	{
	97	VikWmscMapSource *self = VIK_WMSC_MAP_SOURCE (object);
	98	VikWmscMapSourcePrivate *priv = VIK_WMSC_MAP_SOURCE_PRIVATE (self);
	99
	100	g_free (priv->hostname);
	101	priv->hostname = NULL;
	102	g_free (priv->url);
	103	priv->url = NULL;
	104	g_free (priv->options.referer);
	105	priv->options.referer = NULL;
	106
	107	G_OBJECT_CLASS (vik_wmsc_map_source_parent_class)->finalize (object);
	108	}
109
110	static void
111	vik_wmsc_map_source_set_property (GObject *object,
112	guint property_id,
113	const GValue *value,
114	GParamSpec *pspec)
115	{
116	VikWmscMapSource *self = VIK_WMSC_MAP_SOURCE (object);
117	VikWmscMapSourcePrivate *priv = VIK_WMSC_MAP_SOURCE_PRIVATE (self);
118
119	switch (property_id)
120	{
121	case PROP_HOSTNAME:
122	g_free (priv->hostname);
123	priv->hostname = g_value_dup_string (value);
124	break;
125
126	case PROP_URL:
127	g_free (priv->url);
128	priv->url = g_value_dup_string (value);
129	break;
130
131	case PROP_REFERER:
132	g_free (priv->options.referer);
133	priv->options.referer = g_value_dup_string (value);
134	break;
135
136	case PROP_FOLLOW_LOCATION:
137	priv->options.follow_location = g_value_get_long (value);
138	break;
139
140	case PROP_CHECK_FILE_SERVER_TIME:
141	priv->options.check_file_server_time = g_value_get_boolean (value);
142	break;
143
144	default:
145	/* We don't have any other property... */
146	G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
147	break;
148	}
149	}
150
151	static void
152	vik_wmsc_map_source_get_property (GObject *object,
153	guint property_id,
154	GValue *value,
155	GParamSpec *pspec)
156	{
157	VikWmscMapSource *self = VIK_WMSC_MAP_SOURCE (object);
158	VikWmscMapSourcePrivate *priv = VIK_WMSC_MAP_SOURCE_PRIVATE (self);
159
160	switch (property_id)
161	{
162	case PROP_HOSTNAME:
163	g_value_set_string (value, priv->hostname);
164	break;
165
166	case PROP_URL:
167	g_value_set_string (value, priv->url);
168	break;
169
170	case PROP_REFERER:
171	g_value_set_string (value, priv->options.referer);
172	break;
173
174	case PROP_FOLLOW_LOCATION:
175	g_value_set_long (value, priv->options.follow_location);
176	break;
177
178	case PROP_CHECK_FILE_SERVER_TIME:
179	g_value_set_boolean (value, priv->options.check_file_server_time);
180	break;
181
182	default:
183	/* We don't have any other property... */
184	G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
185	break;
186	}
187	}
188
189	static void
190	vik_wmsc_map_source_class_init (VikWmscMapSourceClass *klass)
191	{
192	GObjectClass* object_class = G_OBJECT_CLASS (klass);
a3319e11	193	VikMapSourceClass* grandparent_class = VIK_MAP_SOURCE_CLASS (klass);
5b675792 GB	194	VikMapSourceDefaultClass* parent_class = VIK_MAP_SOURCE_DEFAULT_CLASS (klass);
	195	GParamSpec *pspec = NULL;
	196
	197	object_class->set_property = vik_wmsc_map_source_set_property;
	198	object_class->get_property = vik_wmsc_map_source_get_property;
	199
	200	/* Overiding methods */
a3319e11 RN	201	grandparent_class->coord_to_mapcoord = _coord_to_mapcoord;
	202	grandparent_class->mapcoord_to_center_coord = _mapcoord_to_center_coord;
	203	grandparent_class->supports_download_only_new = _supports_download_only_new;
a0262d5b	204	grandparent_class->is_direct_file_access = _is_direct_file_access;
5b675792 GB	205
	206	parent_class->get_uri = _get_uri;
	207	parent_class->get_hostname = _get_hostname;
	208	parent_class->get_download_options = _get_download_options;
	209
	210	pspec = g_param_spec_string ("hostname",
	211	"Hostname",
	212	"The hostname of the map server",
	213	"<no-set>" /* default value */,
	214	G_PARAM_CONSTRUCT_ONLY \| G_PARAM_READWRITE);
	215	g_object_class_install_property (object_class, PROP_HOSTNAME, pspec);
	216
	217	pspec = g_param_spec_string ("url",
	218	"URL",
	219	"The template of the tiles' URL",
	220	"<no-set>" /* default value */,
	221	G_PARAM_CONSTRUCT_ONLY \| G_PARAM_READWRITE);
	222	g_object_class_install_property (object_class, PROP_URL, pspec);
	223
	224	pspec = g_param_spec_string ("referer",
	225	"Referer",
	226	"The REFERER string to use in HTTP request",
	227	NULL /* default value */,
	228	G_PARAM_CONSTRUCT_ONLY \| G_PARAM_READWRITE);
	229	g_object_class_install_property (object_class, PROP_REFERER, pspec);
	230
	231	pspec = g_param_spec_long ("follow-location",
	232	"Follow location",
	233	"Specifies the number of retries to follow a redirect while downloading a page",
	234	0 /* minimum value */,
	235	G_MAXLONG /* maximum value */,
	236	0 /* default value */,
	237	G_PARAM_CONSTRUCT_ONLY \| G_PARAM_READWRITE);
	238	g_object_class_install_property (object_class, PROP_FOLLOW_LOCATION, pspec);
	239
	240	pspec = g_param_spec_boolean ("check-file-server-time",
	241	"Check file server time",
	242	"Age of current cache before redownloading tile",
	243	FALSE /* default value */,
	244	G_PARAM_CONSTRUCT_ONLY \| G_PARAM_READWRITE);
	245	g_object_class_install_property (object_class, PROP_CHECK_FILE_SERVER_TIME, pspec);
	246
	247	g_type_class_add_private (klass, sizeof (VikWmscMapSourcePrivate));
	248
	249	object_class->finalize = vik_wmsc_map_source_finalize;
	250	}
	251
a748af37 RN	252	static gboolean
a748af37 RN	253	_supports_download_only_new ( VikMapSource *self )
5b675792 GB	254	{
	255	g_return_val_if_fail (VIK_IS_WMSC_MAP_SOURCE(self), FALSE);
	256
	257	VikWmscMapSourcePrivate *priv = VIK_WMSC_MAP_SOURCE_PRIVATE(self);
	258
	259	return priv->options.check_file_server_time;
	260	}
	261
a0262d5b RN	262	static gboolean
	263	_is_direct_file_access ( VikMapSource *self )
	264	{
	265	return FALSE;
	266	}
	267
5b675792 GB	268	static gboolean
	269	_coord_to_mapcoord ( VikMapSource self, const VikCoord src, gdouble xzoom, gdouble yzoom, MapCoord *dest )
	270	{
	271	g_assert ( src->mode == VIK_COORD_LATLON );
	272
	273	if ( xzoom != yzoom )
	274	return FALSE;
	275
e1dde2a6	276	dest->scale = map_utils_mpp_to_scale ( xzoom );
5b675792 GB	277	if ( dest->scale == 255 )
	278	return FALSE;
	279
e1dde2a6	280	/* Note : VIK_GZ(17) / xzoom / 2 = number of tile on Y axis */
5b675792	281	g_debug("%s: xzoom=%f yzoom=%f -> %f", __FUNCTION__,
e1dde2a6 RN	282	xzoom, yzoom, VIK_GZ(17) / xzoom / 2);
e1dde2a6 RN	283	dest->x = floor((src->east_west + 180) / 180 * VIK_GZ(17) / xzoom / 2);
5b675792 GB	284	/* We should restore logic of viking:
	285	* tile index on Y axis follow a screen logic (top -> down)
	286	*/
e1dde2a6	287	dest->y = floor((180 - (src->north_south + 90)) / 180 * VIK_GZ(17) / xzoom / 2);
5b675792 GB	288	dest->z = 0;
	289	g_debug("%s: %f,%f -> %d,%d", __FUNCTION__,
	290	src->east_west, src->north_south, dest->x, dest->y);
	291	return TRUE;
	292	}
	293
	294	static void
	295	_mapcoord_to_center_coord ( VikMapSource self, MapCoord src, VikCoord *dest )
	296	{
	297	gdouble socalled_mpp;
	298	if (src->scale >= 0)
e1dde2a6	299	socalled_mpp = VIK_GZ(src->scale);
5b675792	300	else
e1dde2a6	301	socalled_mpp = 1.0/VIK_GZ(-src->scale);
5b675792	302	dest->mode = VIK_COORD_LATLON;
e1dde2a6	303	dest->east_west = (src->x+0.5) * 180 / VIK_GZ(17) * socalled_mpp * 2 - 180;
5b675792 GB	304	/* We should restore logic of viking:
	305	* tile index on Y axis follow a screen logic (top -> down)
	306	*/
e1dde2a6	307	dest->north_south = -((src->y+0.5) * 180 / VIK_GZ(17) * socalled_mpp * 2 - 90);
5b675792 GB	308	g_debug("%s: %d,%d -> %f,%f", __FUNCTION__,
	309	src->x, src->y, dest->east_west, dest->north_south);
	310	}
	311
	312	static gchar *
	313	_get_uri( VikMapSourceDefault self, MapCoord src )
	314	{
	315	g_return_val_if_fail (VIK_IS_WMSC_MAP_SOURCE(self), NULL);
	316
	317	VikWmscMapSourcePrivate *priv = VIK_WMSC_MAP_SOURCE_PRIVATE(self);
	318	gdouble socalled_mpp;
	319	if (src->scale >= 0)
e1dde2a6	320	socalled_mpp = VIK_GZ(src->scale);
5b675792	321	else
e1dde2a6 RN	322	socalled_mpp = 1.0/VIK_GZ(-src->scale);
	323	gdouble minx = (gdouble)src->x * 180 / VIK_GZ(17) * socalled_mpp * 2 - 180;
	324	gdouble maxx = (gdouble)(src->x + 1) * 180 / VIK_GZ(17) * socalled_mpp * 2 - 180;
5b675792 GB	325	/* We should restore logic of viking:
	326	* tile index on Y axis follow a screen logic (top -> down)
	327	*/
e1dde2a6 RN	328	gdouble miny = -((gdouble)(src->y + 1) * 180 / VIK_GZ(17) * socalled_mpp * 2 - 90);
e1dde2a6 RN	329	gdouble maxy = -((gdouble)(src->y) * 180 / VIK_GZ(17) * socalled_mpp * 2 - 90);
5b675792 GB	330
	331	gchar sminx[G_ASCII_DTOSTR_BUF_SIZE];
	332	gchar smaxx[G_ASCII_DTOSTR_BUF_SIZE];
	333	gchar sminy[G_ASCII_DTOSTR_BUF_SIZE];
	334	gchar smaxy[G_ASCII_DTOSTR_BUF_SIZE];
	335
	336	g_ascii_dtostr (sminx, G_ASCII_DTOSTR_BUF_SIZE, minx);
	337	g_ascii_dtostr (smaxx, G_ASCII_DTOSTR_BUF_SIZE, maxx);
	338	g_ascii_dtostr (sminy, G_ASCII_DTOSTR_BUF_SIZE, miny);
	339	g_ascii_dtostr (smaxy, G_ASCII_DTOSTR_BUF_SIZE, maxy);
	340
	341	gchar *uri = g_strdup_printf (priv->url, sminx, sminy, smaxx, smaxy);
	342
	343	return uri;
	344	}
	345
	346	static gchar *
	347	_get_hostname( VikMapSourceDefault *self )
	348	{
	349	g_return_val_if_fail (VIK_IS_WMSC_MAP_SOURCE(self), NULL);
	350
	351	VikWmscMapSourcePrivate *priv = VIK_WMSC_MAP_SOURCE_PRIVATE(self);
	352	return g_strdup( priv->hostname );
	353	}
	354
	355	static DownloadMapOptions *
	356	_get_download_options( VikMapSourceDefault *self )
	357	{
	358	g_return_val_if_fail (VIK_IS_WMSC_MAP_SOURCE(self), NULL);
	359
	360	VikWmscMapSourcePrivate *priv = VIK_WMSC_MAP_SOURCE_PRIVATE(self);
	361	return &(priv->options);
	362	}
	363
	364	VikWmscMapSource *
	365	vik_wmsc_map_source_new_with_id (guint8 id, const gchar label, const gchar hostname, const gchar *url)
	366	{
	367	return g_object_new(VIK_TYPE_WMSC_MAP_SOURCE,
	368	"id", id, "label", label, "hostname", hostname, "url", url, NULL);
	369	}