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-rw-r--r--libmap/cc-timezone-map.c1185
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diff --git a/libmap/cc-timezone-map.c b/libmap/cc-timezone-map.c
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+/*
+ * Copyright (C) 2010 Intel, Inc
+ * Copyright (C) 2011 Canonical Ltd.
+ *
+ * Portions from Ubiquity, Copyright (C) 2009 Canonical Ltd.
+ * Written by Evan Dandrea <evand@ubuntu.com>
+ *
+ * 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 of the License, 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.
+ *
+ * Author: Thomas Wood <thomas.wood@intel.com>
+ *
+ */
+
+#include "cc-timezone-map.h"
+#include <math.h>
+#include "tz.h"
+
+G_DEFINE_TYPE (CcTimezoneMap, cc_timezone_map, GTK_TYPE_WIDGET)
+
+#define TIMEZONE_MAP_PRIVATE(o) \
+ (G_TYPE_INSTANCE_GET_PRIVATE ((o), CC_TYPE_TIMEZONE_MAP, CcTimezoneMapPrivate))
+
+
+typedef struct
+{
+ gdouble offset;
+ guchar red;
+ guchar green;
+ guchar blue;
+ guchar alpha;
+} CcTimezoneMapOffset;
+
+struct _CcTimezoneMapPrivate
+{
+ GdkPixbuf *orig_background;
+ GdkPixbuf *orig_color_map;
+
+ GdkPixbuf *background;
+ GdkPixbuf *color_map;
+ GdkPixbuf *olsen_map;
+
+ guchar *visible_map_pixels;
+ gint visible_map_rowstride;
+
+ gint olsen_map_channels;
+ guchar *olsen_map_pixels;
+ gint olsen_map_rowstride;
+
+ gdouble selected_offset;
+
+ gchar *watermark;
+
+ TzDB *tzdb;
+ TzLocation *location;
+ GHashTable *alias_db;
+};
+
+enum
+{
+ LOCATION_CHANGED,
+ LAST_SIGNAL
+};
+
+static guint signals[LAST_SIGNAL];
+
+
+static CcTimezoneMapOffset color_codes[] =
+{
+ {-11.0, 43, 0, 0, 255 },
+ {-10.0, 85, 0, 0, 255 },
+ {-9.5, 102, 255, 0, 255 },
+ {-9.0, 128, 0, 0, 255 },
+ {-8.0, 170, 0, 0, 255 },
+ {-7.0, 212, 0, 0, 255 },
+ {-6.0, 255, 0, 1, 255 }, // north
+ {-6.0, 255, 0, 0, 255 }, // south
+ {-5.0, 255, 42, 42, 255 },
+ {-4.5, 192, 255, 0, 255 },
+ {-4.0, 255, 85, 85, 255 },
+ {-3.5, 0, 255, 0, 255 },
+ {-3.0, 255, 128, 128, 255 },
+ {-2.0, 255, 170, 170, 255 },
+ {-1.0, 255, 213, 213, 255 },
+ {0.0, 43, 17, 0, 255 },
+ {1.0, 85, 34, 0, 255 },
+ {2.0, 128, 51, 0, 255 },
+ {3.0, 170, 68, 0, 255 },
+ {3.5, 0, 255, 102, 255 },
+ {4.0, 212, 85, 0, 255 },
+ {4.5, 0, 204, 255, 255 },
+ {5.0, 255, 102, 0, 255 },
+ {5.5, 0, 102, 255, 255 },
+ {5.75, 0, 238, 207, 247 },
+ {6.0, 255, 127, 42, 255 },
+ {6.5, 204, 0, 254, 254 },
+ {7.0, 255, 153, 85, 255 },
+ {8.0, 255, 179, 128, 255 },
+ {9.0, 255, 204, 170, 255 },
+ {9.5, 170, 0, 68, 250 },
+ {10.0, 255, 230, 213, 255 },
+ {10.5, 212, 124, 21, 250 },
+ {11.0, 212, 170, 0, 255 },
+ {11.5, 249, 25, 87, 253 },
+ {12.0, 255, 204, 0, 255 },
+ {12.75, 254, 74, 100, 248 },
+ {13.0, 255, 85, 153, 250 },
+ {-100, 0, 0, 0, 0 }
+};
+
+static const gchar * olsen_map_timezones[] = {
+ "Africa/Abidjan",
+ "Africa/Accra",
+ "Africa/Addis_Ababa",
+ "Africa/Algiers",
+ "Africa/Asmara",
+ "Africa/Bamako",
+ "Africa/Bangui",
+ "Africa/Banjul",
+ "Africa/Bissau",
+ "Africa/Blantyre",
+ "Africa/Brazzaville",
+ "Africa/Bujumbura",
+ "Africa/Cairo",
+ "Africa/Casablanca",
+ "Africa/Conakry",
+ "Africa/Dakar",
+ "Africa/Dar_es_Salaam",
+ "Africa/Djibouti",
+ "Africa/Douala",
+ "Africa/El_Aaiun",
+ "Africa/Freetown",
+ "Africa/Gaborone",
+ "Africa/Harare",
+ "Africa/Johannesburg",
+ "Africa/Kampala",
+ "Africa/Khartoum",
+ "Africa/Kigali",
+ "Africa/Kinshasa",
+ "Africa/Lagos",
+ "Africa/Libreville",
+ "Africa/Lome",
+ "Africa/Luanda",
+ "Africa/Lubumbashi",
+ "Africa/Lusaka",
+ "Africa/Malabo",
+ "Africa/Maputo",
+ "Africa/Maseru",
+ "Africa/Mbabane",
+ "Africa/Mogadishu",
+ "Africa/Monrovia",
+ "Africa/Nairobi",
+ "Africa/Ndjamena",
+ "Africa/Niamey",
+ "Africa/Nouakchott",
+ "Africa/Ouagadougou",
+ "Africa/Porto-Novo",
+ "Africa/Sao_Tome",
+ "Africa/Tripoli",
+ "Africa/Tunis",
+ "Africa/Windhoek",
+ "America/Adak",
+ "America/Anguilla",
+ "America/Antigua",
+ "America/Araguaina",
+ "America/Argentina/Buenos_Aires",
+ "America/Argentina/Catamarca",
+ "America/Argentina/Cordoba",
+ "America/Argentina/Jujuy",
+ "America/Argentina/La_Rioja",
+ "America/Argentina/Mendoza",
+ "America/Argentina/Rio_Gallegos",
+ "America/Argentina/San_Juan",
+ "America/Argentina/San_Luis",
+ "America/Argentina/Tucuman",
+ "America/Argentina/Ushuaia",
+ "America/Aruba",
+ "America/Asuncion",
+ "America/Atikokan",
+ "America/Bahia",
+ "America/Barbados",
+ "America/Belem",
+ "America/Belize",
+ "America/Blanc-Sablon",
+ "America/Boa_Vista",
+ "America/Bogota",
+ "America/Boise",
+ "America/Cambridge_Bay",
+ "America/Campo_Grande",
+ "America/Cancun",
+ "America/Caracas",
+ "America/Cayenne",
+ "America/Cayman",
+ "America/Chicago",
+ "America/Chihuahua",
+ "America/Coral_Harbour",
+ "America/Costa_Rica",
+ "America/Cuiaba",
+ "America/Curacao",
+ "America/Dawson",
+ "America/Dawson_Creek",
+ "America/Denver",
+ "America/Dominica",
+ "America/Edmonton",
+ "America/Eirunepe",
+ "America/El_Salvador",
+ "America/Fortaleza",
+ "America/Glace_Bay",
+ "America/Goose_Bay",
+ "America/Grand_Turk",
+ "America/Grenada",
+ "America/Guadeloupe",
+ "America/Guatemala",
+ "America/Guayaquil",
+ "America/Guyana",
+ "America/Halifax",
+ "America/Havana",
+ "America/Hermosillo",
+ "America/Indiana/Indianapolis",
+ "America/Indiana/Knox",
+ "America/Indiana/Marengo",
+ "America/Indiana/Petersburg",
+ "America/Indiana/Vevay",
+ "America/Indiana/Vincennes",
+ "America/Indiana/Winamac",
+ "America/Inuvik",
+ "America/Iqaluit",
+ "America/Jamaica",
+ "America/Juneau",
+ "America/Kentucky/Louisville",
+ "America/Kentucky/Monticello",
+ "America/La_Paz",
+ "America/Lima",
+ "America/Los_Angeles",
+ "America/Maceio",
+ "America/Managua",
+ "America/Manaus",
+ "America/Marigot",
+ "America/Martinique",
+ "America/Mazatlan",
+ "America/Menominee",
+ "America/Merida",
+ "America/Mexico_City",
+ "America/Miquelon",
+ "America/Moncton",
+ "America/Monterrey",
+ "America/Montevideo",
+ "America/Montreal",
+ "America/Montserrat",
+ "America/Nassau",
+ "America/New_York",
+ "America/Nipigon",
+ "America/Noronha",
+ "America/North_Dakota/Center",
+ "America/North_Dakota/Salem",
+ "America/Panama",
+ "America/Pangnirtung",
+ "America/Paramaribo",
+ "America/Phoenix",
+ "America/Port-au-Prince",
+ "America/Port_of_Spain",
+ "America/Porto_Velho",
+ "America/Puerto_Rico",
+ "America/Rainy_River",
+ "America/Rankin_Inlet",
+ "America/Recife",
+ "America/Regina",
+ "America/Resolute",
+ "America/Rio_Branco",
+ "America/Santarem",
+ "America/Santiago",
+ "America/Santo_Domingo",
+ "America/Sao_Paulo",
+ "America/St_Barthelemy",
+ "America/St_Johns",
+ "America/St_Kitts",
+ "America/St_Lucia",
+ "America/St_Thomas",
+ "America/St_Vincent",
+ "America/Tegucigalpa",
+ "America/Thunder_Bay",
+ "America/Tijuana",
+ "America/Toronto",
+ "America/Tortola",
+ "America/Vancouver",
+ "America/Whitehorse",
+ "America/Winnipeg",
+ "America/Yellowknife",
+ "Ameriica/Swift_Current",
+ "Arctic/Longyearbyen",
+ "Asia/Aden",
+ "Asia/Almaty",
+ "Asia/Amman",
+ "Asia/Anadyr",
+ "Asia/Aqtau",
+ "Asia/Aqtobe",
+ "Asia/Ashgabat",
+ "Asia/Baghdad",
+ "Asia/Bahrain",
+ "Asia/Baku",
+ "Asia/Bangkok",
+ "Asia/Beirut",
+ "Asia/Bishkek",
+ "Asia/Brunei",
+ "Asia/Choibalsan",
+ "Asia/Chongqing",
+ "Asia/Colombo",
+ "Asia/Damascus",
+ "Asia/Dhaka",
+ "Asia/Dili",
+ "Asia/Dubai",
+ "Asia/Dushanbe",
+ "Asia/Gaza",
+ "Asia/Harbin",
+ "Asia/Ho_Chi_Minh",
+ "Asia/Hong_Kong",
+ "Asia/Hovd",
+ "Asia/Irkutsk",
+ "Asia/Jakarta",
+ "Asia/Jayapura",
+ "Asia/Jerusalem",
+ "Asia/Kabul",
+ "Asia/Kamchatka",
+ "Asia/Karachi",
+ "Asia/Kashgar",
+ "Asia/Katmandu",
+ "Asia/Kolkata",
+ "Asia/Krasnoyarsk",
+ "Asia/Kuala_Lumpur",
+ "Asia/Kuching",
+ "Asia/Kuwait",
+ "Asia/Macau",
+ "Asia/Magadan",
+ "Asia/Makassar",
+ "Asia/Manila",
+ "Asia/Muscat",
+ "Asia/Nicosia",
+ "Asia/Novosibirsk",
+ "Asia/Omsk",
+ "Asia/Oral",
+ "Asia/Phnom_Penh",
+ "Asia/Pontianak",
+ "Asia/Pyongyang",
+ "Asia/Qatar",
+ "Asia/Qyzylorda",
+ "Asia/Rangoon",
+ "Asia/Riyadh",
+ "Asia/Sakhalin",
+ "Asia/Samarkand",
+ "Asia/Seoul",
+ "Asia/Shanghai",
+ "Asia/Singapore",
+ "Asia/Taipei",
+ "Asia/Tashkent",
+ "Asia/Tbilisi",
+ "Asia/Tehran",
+ "Asia/Thimphu",
+ "Asia/Tokyo",
+ "Asia/Ulaanbaatar",
+ "Asia/Urumqi",
+ "Asia/Vientiane",
+ "Asia/Vladivostok",
+ "Asia/Yakutsk",
+ "Asia/Yekaterinburg",
+ "Asia/Yerevan",
+ "Atlantic/Azores",
+ "Atlantic/Bermuda",
+ "Atlantic/Canary",
+ "Atlantic/Cape_Verde",
+ "Atlantic/Faroe",
+ "Atlantic/Madeira",
+ "Atlantic/Reykjavik",
+ "Atlantic/South_Georgia",
+ "Atlantic/St_Helena",
+ "Atlantic/Stanley",
+ "Australia/Adelaide",
+ "Australia/Brisbane",
+ "Australia/Broken_Hill",
+ "Australia/Currie",
+ "Australia/Darwin",
+ "Australia/Eucla",
+ "Australia/Hobart",
+ "Australia/Lindeman",
+ "Australia/Lord_Howe",
+ "Australia/Melbourne",
+ "Australia/Perth",
+ "Australia/Sydney",
+ "Europe/Amsterdam",
+ "Europe/Andorra",
+ "Europe/Athens",
+ "Europe/Belgrade",
+ "Europe/Berlin",
+ "Europe/Bratislava",
+ "Europe/Brussels",
+ "Europe/Bucharest",
+ "Europe/Budapest",
+ "Europe/Chisinau",
+ "Europe/Copenhagen",
+ "Europe/Dublin",
+ "Europe/Gibraltar",
+ "Europe/Guernsey",
+ "Europe/Helsinki",
+ "Europe/Isle_of_Man",
+ "Europe/Istanbul",
+ "Europe/Jersey",
+ "Europe/Kaliningrad",
+ "Europe/Kiev",
+ "Europe/Lisbon",
+ "Europe/Ljubljana",
+ "Europe/London",
+ "Europe/Luxembourg",
+ "Europe/Madrid",
+ "Europe/Malta",
+ "Europe/Marienhamn",
+ "Europe/Minsk",
+ "Europe/Monaco",
+ "Europe/Moscow",
+ "Europe/Oslo",
+ "Europe/Paris",
+ "Europe/Podgorica",
+ "Europe/Prague",
+ "Europe/Riga",
+ "Europe/Rome",
+ "Europe/Samara",
+ "Europe/San_Marino",
+ "Europe/Sarajevo",
+ "Europe/Simferopol",
+ "Europe/Skopje",
+ "Europe/Sofia",
+ "Europe/Stockholm",
+ "Europe/Tallinn",
+ "Europe/Tirane",
+ "Europe/Uzhgorod",
+ "Europe/Vaduz",
+ "Europe/Vatican",
+ "Europe/Vienna",
+ "Europe/Vilnius",
+ "Europe/Volgograd",
+ "Europe/Warsaw",
+ "Europe/Zagreb",
+ "Europe/Zaporozhye",
+ "Europe/Zurich",
+ "Indian/Antananarivo",
+ "Indian/Chagos",
+ "Indian/Christmas",
+ "Indian/Cocos",
+ "Indian/Comoro",
+ "Indian/Kerguelen",
+ "Indian/Mahe",
+ "Indian/Maldives",
+ "Indian/Mauritius",
+ "Indian/Mayotte",
+ "Indian/Reunion",
+ "Pacific/Apia",
+ "Pacific/Auckland",
+ "Pacific/Chatham",
+ "Pacific/Easter",
+ "Pacific/Efate",
+ "Pacific/Enderbury",
+ "Pacific/Fakaofo",
+ "Pacific/Fiji",
+ "Pacific/Funafuti",
+ "Pacific/Galapagos",
+ "Pacific/Gambier",
+ "Pacific/Guadalcanal",
+ "Pacific/Guam",
+ "Pacific/Honolulu",
+ "Pacific/Johnston",
+ "Pacific/Kiritimati",
+ "Pacific/Kosrae",
+ "Pacific/Kwajalein",
+ "Pacific/Majuro",
+ "Pacific/Marquesas",
+ "Pacific/Midway",
+ "Pacific/Nauru",
+ "Pacific/Niue",
+ "Pacific/Norfolk",
+ "Pacific/Noumea",
+ "Pacific/Pago_Pago",
+ "Pacific/Palau",
+ "Pacific/Pitcairn",
+ "Pacific/Ponape",
+ "Pacific/Port_Moresby",
+ "Pacific/Rarotonga",
+ "Pacific/Saipan",
+ "Pacific/Tahiti",
+ "Pacific/Tarawa",
+ "Pacific/Tongatapu",
+ "Pacific/Truk",
+ "Pacific/Wake",
+ "Pacific/Wallis"
+};
+
+static void
+cc_timezone_map_get_property (GObject *object,
+ guint property_id,
+ GValue *value,
+ GParamSpec *pspec)
+{
+ switch (property_id)
+ {
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+ }
+}
+
+static void
+cc_timezone_map_set_property (GObject *object,
+ guint property_id,
+ const GValue *value,
+ GParamSpec *pspec)
+{
+ switch (property_id)
+ {
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+ }
+}
+
+static void
+cc_timezone_map_dispose (GObject *object)
+{
+ CcTimezoneMapPrivate *priv = CC_TIMEZONE_MAP (object)->priv;
+
+ if (priv->orig_background)
+ {
+ g_object_unref (priv->orig_background);
+ priv->orig_background = NULL;
+ }
+
+ if (priv->orig_color_map)
+ {
+ g_object_unref (priv->orig_color_map);
+ priv->orig_color_map = NULL;
+ }
+
+ if (priv->olsen_map)
+ {
+ g_object_unref (priv->olsen_map);
+ priv->olsen_map = NULL;
+
+ priv->olsen_map_channels = 0;
+ priv->olsen_map_pixels = NULL;
+ priv->olsen_map_rowstride = 0;
+ }
+
+ if (priv->background)
+ {
+ g_object_unref (priv->background);
+ priv->background = NULL;
+ }
+
+ if (priv->color_map)
+ {
+ g_object_unref (priv->color_map);
+ priv->color_map = NULL;
+
+ priv->visible_map_pixels = NULL;
+ priv->visible_map_rowstride = 0;
+ }
+
+ if (priv->alias_db)
+ {
+ g_hash_table_destroy (priv->alias_db);
+ priv->alias_db = NULL;
+ }
+
+ if (priv->watermark)
+ {
+ g_free (priv->watermark);
+ priv->watermark = NULL;
+ }
+
+ G_OBJECT_CLASS (cc_timezone_map_parent_class)->dispose (object);
+}
+
+static void
+cc_timezone_map_finalize (GObject *object)
+{
+ CcTimezoneMapPrivate *priv = CC_TIMEZONE_MAP (object)->priv;
+
+ if (priv->tzdb)
+ {
+ tz_db_free (priv->tzdb);
+ priv->tzdb = NULL;
+ }
+
+
+ G_OBJECT_CLASS (cc_timezone_map_parent_class)->finalize (object);
+}
+
+/* GtkWidget functions */
+#ifdef CCGTK3
+static void
+cc_timezone_map_get_preferred_width (GtkWidget *widget,
+ gint *minimum,
+ gint *natural)
+{
+ /* choose a minimum size small enough to prevent the window
+ * from growing horizontally
+ */
+ if (minimum != NULL)
+ *minimum = 300;
+ if (natural != NULL)
+ *natural = 300;
+}
+
+static void
+cc_timezone_map_get_preferred_height (GtkWidget *widget,
+ gint *minimum,
+ gint *natural)
+{
+ CcTimezoneMapPrivate *priv = CC_TIMEZONE_MAP (widget)->priv;
+ gint size;
+
+ /* The + 20 here is a slight tweak to make the map fill the
+ * panel better without causing horizontal growing
+ */
+ size = 300 * gdk_pixbuf_get_height (priv->orig_background) / gdk_pixbuf_get_width (priv->orig_background) + 20;
+ if (minimum != NULL)
+ *minimum = size;
+ if (natural != NULL)
+ *natural = size;
+}
+
+#else
+
+static void
+cc_timezone_map_size_request (GtkWidget *widget,
+ GtkRequisition *requisition)
+{
+ CcTimezoneMapPrivate *priv = CC_TIMEZONE_MAP (widget)->priv;
+
+ if (!requisition)
+ return;
+
+ /* The + 20 here is a slight tweak to make the map fill the
+ * panel better without causing horizontal growing
+ */
+ requisition->height = 300 * gdk_pixbuf_get_height (priv->orig_background) / gdk_pixbuf_get_width (priv->orig_background) + 20;
+ requisition->width = 300;
+}
+#endif
+
+static void
+cc_timezone_map_size_allocate (GtkWidget *widget,
+ GtkAllocation *allocation)
+{
+ CcTimezoneMapPrivate *priv = CC_TIMEZONE_MAP (widget)->priv;
+
+ if (priv->background)
+ g_object_unref (priv->background);
+
+ priv->background = gdk_pixbuf_scale_simple (priv->orig_background,
+ allocation->width,
+ allocation->height,
+ GDK_INTERP_BILINEAR);
+
+ if (priv->color_map)
+ g_object_unref (priv->color_map);
+
+ priv->color_map = gdk_pixbuf_scale_simple (priv->orig_color_map,
+ allocation->width,
+ allocation->height,
+ GDK_INTERP_BILINEAR);
+
+ priv->visible_map_pixels = gdk_pixbuf_get_pixels (priv->color_map);
+ priv->visible_map_rowstride = gdk_pixbuf_get_rowstride (priv->color_map);
+
+ GTK_WIDGET_CLASS (cc_timezone_map_parent_class)->size_allocate (widget,
+ allocation);
+}
+
+static void
+cc_timezone_map_realize (GtkWidget *widget)
+{
+ GdkWindowAttr attr = { 0, };
+ GtkAllocation allocation;
+ GdkCursor *cursor;
+ GdkWindow *window;
+
+ gtk_widget_get_allocation (widget, &allocation);
+
+ gtk_widget_set_realized (widget, TRUE);
+
+ attr.window_type = GDK_WINDOW_CHILD;
+ attr.wclass = GDK_INPUT_OUTPUT;
+ attr.width = allocation.width;
+ attr.height = allocation.height;
+ attr.x = allocation.x;
+ attr.y = allocation.y;
+ attr.event_mask = gtk_widget_get_events (widget)
+ | GDK_EXPOSURE_MASK | GDK_BUTTON_PRESS_MASK;
+
+ window = gdk_window_new (gtk_widget_get_parent_window (widget), &attr,
+ GDK_WA_X | GDK_WA_Y);
+
+ gtk_widget_set_style (widget,
+ gtk_style_attach (gtk_widget_get_style (widget),
+ window));
+
+ gdk_window_set_user_data (window, widget);
+
+ cursor = gdk_cursor_new (GDK_HAND2);
+ gdk_window_set_cursor (window, cursor);
+
+ gtk_widget_set_window (widget, window);
+}
+
+
+static gdouble
+convert_longtitude_to_x (gdouble longitude, gint map_width)
+{
+ const gdouble xdeg_offset = -6;
+ gdouble x;
+
+ x = (map_width * (180.0 + longitude) / 360.0)
+ + (map_width * xdeg_offset / 180.0);
+
+ return x;
+}
+
+static gdouble
+radians (gdouble degrees)
+{
+ return (degrees / 360.0) * G_PI * 2;
+}
+
+static gdouble
+convert_latitude_to_y (gdouble latitude, gdouble map_height)
+{
+ gdouble bottom_lat = -59;
+ gdouble top_lat = 81;
+ gdouble top_per, y, full_range, top_offset, map_range;
+
+ top_per = top_lat / 180.0;
+ y = 1.25 * log (tan (G_PI_4 + 0.4 * radians (latitude)));
+ full_range = 4.6068250867599998;
+ top_offset = full_range * top_per;
+ map_range = fabs (1.25 * log (tan (G_PI_4 + 0.4 * radians (bottom_lat))) - top_offset);
+ y = fabs (y - top_offset);
+ y = y / map_range;
+ y = y * map_height;
+ return y;
+}
+
+
+static gboolean
+cc_timezone_map_draw (GtkWidget *widget,
+ cairo_t *cr)
+{
+ CcTimezoneMapPrivate *priv = CC_TIMEZONE_MAP (widget)->priv;
+ GdkPixbuf *hilight, *orig_hilight, *pin;
+ GtkAllocation alloc;
+ gchar *file;
+ GError *err = NULL;
+ gdouble pointx, pointy;
+ char buf[16];
+
+ gtk_widget_get_allocation (widget, &alloc);
+
+ /* paint background */
+ gdk_cairo_set_source_pixbuf (cr, priv->background, 0, 0);
+ cairo_paint (cr);
+
+ /* paint watermark */
+ if (priv->watermark) {
+ cairo_text_extents_t extent;
+ cairo_select_font_face(cr, "Sans", CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_NORMAL);
+ cairo_set_font_size(cr, 12.0);
+ cairo_set_source_rgba(cr, 1, 1, 1, 0.5);
+ cairo_text_extents(cr, priv->watermark, &extent);
+ cairo_move_to(cr, alloc.width - extent.x_advance + extent.x_bearing - 5,
+ alloc.height - extent.height - extent.y_bearing - 5);
+ cairo_show_text(cr, priv->watermark);
+ cairo_stroke(cr);
+ }
+
+ if (!priv->location) {
+ return TRUE;
+ }
+
+ /* paint hilight */
+ file = g_strdup_printf (DATADIR "/timezone_%s.png",
+ g_ascii_formatd (buf, sizeof (buf),
+ "%g", priv->selected_offset));
+ orig_hilight = gdk_pixbuf_new_from_file (file, &err);
+ g_free (file);
+ file = NULL;
+
+ if (!orig_hilight)
+ {
+ g_warning ("Could not load hilight: %s",
+ (err) ? err->message : "Unknown Error");
+ if (err)
+ g_clear_error (&err);
+ }
+ else
+ {
+
+ hilight = gdk_pixbuf_scale_simple (orig_hilight, alloc.width,
+ alloc.height, GDK_INTERP_BILINEAR);
+ gdk_cairo_set_source_pixbuf (cr, hilight, 0, 0);
+
+ cairo_paint (cr);
+ g_object_unref (hilight);
+ g_object_unref (orig_hilight);
+ }
+
+ /* load pin icon */
+ pin = gdk_pixbuf_new_from_file (DATADIR "/pin.png", &err);
+
+ if (err)
+ {
+ g_warning ("Could not load pin icon: %s", err->message);
+ g_clear_error (&err);
+ }
+
+ pointx = convert_longtitude_to_x (priv->location->longitude, alloc.width);
+ pointy = convert_latitude_to_y (priv->location->latitude, alloc.height);
+
+ if (pointy > alloc.height)
+ pointy = alloc.height;
+
+ if (pin)
+ {
+ gdk_cairo_set_source_pixbuf (cr, pin, pointx - 8, pointy - 14);
+ cairo_paint (cr);
+ g_object_unref (pin);
+ }
+
+ return TRUE;
+}
+
+#ifndef CCGTK3
+static gboolean
+cc_timezone_map_expose_event (GtkWidget *widget,
+ GdkEventExpose *event)
+{
+ gboolean rv;
+ cairo_t *cr;
+ cr = gdk_cairo_create (widget->window);
+ rv = cc_timezone_map_draw (widget, cr);
+ cairo_destroy (cr);
+ return rv;
+}
+#endif
+
+
+static void
+cc_timezone_map_class_init (CcTimezoneMapClass *klass)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS (klass);
+ GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
+
+ g_type_class_add_private (klass, sizeof (CcTimezoneMapPrivate));
+
+ object_class->get_property = cc_timezone_map_get_property;
+ object_class->set_property = cc_timezone_map_set_property;
+ object_class->dispose = cc_timezone_map_dispose;
+ object_class->finalize = cc_timezone_map_finalize;
+
+#ifdef CCGTK3
+ widget_class->get_preferred_width = cc_timezone_map_get_preferred_width;
+ widget_class->get_preferred_height = cc_timezone_map_get_preferred_height;
+#else
+ widget_class->size_request = cc_timezone_map_size_request;
+#endif
+ widget_class->size_allocate = cc_timezone_map_size_allocate;
+ widget_class->realize = cc_timezone_map_realize;
+#ifdef CCGTK3
+ widget_class->draw = cc_timezone_map_draw;
+#else
+ widget_class->expose_event = cc_timezone_map_expose_event;
+#endif
+
+ signals[LOCATION_CHANGED] = g_signal_new ("location-changed",
+ CC_TYPE_TIMEZONE_MAP,
+ G_SIGNAL_RUN_FIRST,
+ 0,
+ NULL,
+ NULL,
+ g_cclosure_marshal_VOID__POINTER,
+ G_TYPE_NONE, 1,
+ G_TYPE_POINTER);
+}
+
+
+static gint
+sort_locations (TzLocation *a,
+ TzLocation *b)
+{
+ if (a->dist > b->dist)
+ return 1;
+
+ if (a->dist < b->dist)
+ return -1;
+
+ return 0;
+}
+
+static void
+set_location (CcTimezoneMap *map,
+ TzLocation *location)
+{
+ CcTimezoneMapPrivate *priv = map->priv;
+ TzInfo *info;
+
+ priv->location = location;
+
+ info = tz_info_from_location (priv->location);
+
+ priv->selected_offset = tz_location_get_utc_offset (priv->location)
+ / (60.0*60.0) + ((info->daylight) ? -1.0 : 0.0);
+
+ g_signal_emit (map, signals[LOCATION_CHANGED], 0, priv->location);
+
+ tz_info_free (info);
+}
+
+static TzLocation *
+get_loc_for_xy (GtkWidget * widget, gint x, gint y)
+{
+ CcTimezoneMapPrivate *priv = CC_TIMEZONE_MAP (widget)->priv;
+ guchar r, g, b, a;
+ guchar *pixels;
+ gint rowstride;
+ gint i;
+
+ const GPtrArray *array;
+ gint width, height;
+ GList *distances = NULL;
+ GtkAllocation alloc;
+
+ rowstride = priv->visible_map_rowstride;
+ pixels = priv->visible_map_pixels;
+
+ r = pixels[(rowstride * y + x * 4)];
+ g = pixels[(rowstride * y + x * 4) + 1];
+ b = pixels[(rowstride * y + x * 4) + 2];
+ a = pixels[(rowstride * y + x * 4) + 3];
+
+
+ for (i = 0; color_codes[i].offset != -100; i++)
+ {
+ if (color_codes[i].red == r && color_codes[i].green == g
+ && color_codes[i].blue == b && color_codes[i].alpha == a)
+ {
+ priv->selected_offset = color_codes[i].offset;
+ }
+ }
+
+ gtk_widget_queue_draw (widget);
+
+ /* work out the co-ordinates */
+
+ array = tz_get_locations (priv->tzdb);
+
+ gtk_widget_get_allocation (widget, &alloc);
+ width = alloc.width;
+ height = alloc.height;
+
+ for (i = 0; i < array->len; i++)
+ {
+ gdouble pointx, pointy, dx, dy;
+ TzLocation *loc = array->pdata[i];
+
+ pointx = convert_longtitude_to_x (loc->longitude, width);
+ pointy = convert_latitude_to_y (loc->latitude, height);
+
+ dx = pointx - x;
+ dy = pointy - y;
+
+ loc->dist = dx * dx + dy * dy;
+ distances = g_list_prepend (distances, loc);
+
+ }
+ distances = g_list_sort (distances, (GCompareFunc) sort_locations);
+
+ TzLocation * loc = (TzLocation*) distances->data;
+
+ g_list_free (distances);
+
+ return loc;
+}
+
+static gboolean
+button_press_event (GtkWidget *widget,
+ GdkEventButton *event)
+{
+ TzLocation * loc = get_loc_for_xy (widget, event->x, event->y);
+ set_location (CC_TIMEZONE_MAP (widget), loc);
+ return TRUE;
+}
+
+static void
+load_backward_tz (CcTimezoneMap *self)
+{
+ GError *error = NULL;
+ char **lines, *contents;
+ guint i;
+
+ self->priv->alias_db = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_free);
+
+ if (g_file_get_contents (GNOMECC_DATA_DIR "/datetime/backward", &contents, NULL, &error) == FALSE)
+ {
+ g_warning ("Failed to load 'backward' file: %s", error->message);
+ return;
+ }
+ lines = g_strsplit (contents, "\n", -1);
+ g_free (contents);
+ for (i = 0; lines[i] != NULL; i++)
+ {
+ char **items;
+ guint j;
+ char *real, *alias;
+
+ if (g_ascii_strncasecmp (lines[i], "Link\t", 5) != 0)
+ continue;
+
+ items = g_strsplit (lines[i], "\t", -1);
+ real = NULL;
+ alias = NULL;
+ /* Skip the "Link<tab>" part */
+ for (j = 1; items[j] != NULL; j++)
+ {
+ if (items[j][0] == '\0')
+ continue;
+ if (real == NULL)
+ {
+ real = items[j];
+ continue;
+ }
+ alias = items[j];
+ break;
+ }
+
+ if (real == NULL || alias == NULL)
+ g_warning ("Could not parse line: %s", lines[i]);
+
+ g_hash_table_insert (self->priv->alias_db, g_strdup (alias), g_strdup (real));
+ g_strfreev (items);
+ }
+ g_strfreev (lines);
+}
+
+static void
+cc_timezone_map_init (CcTimezoneMap *self)
+{
+ CcTimezoneMapPrivate *priv;
+ GError *err = NULL;
+
+ priv = self->priv = TIMEZONE_MAP_PRIVATE (self);
+
+ priv->orig_background = gdk_pixbuf_new_from_file (DATADIR "/bg.png",
+ &err);
+
+ if (!priv->orig_background)
+ {
+ g_warning ("Could not load background image: %s",
+ (err) ? err->message : "Unknown error");
+ g_clear_error (&err);
+ }
+
+ priv->orig_color_map = gdk_pixbuf_new_from_file (DATADIR "/cc.png",
+ &err);
+ if (!priv->orig_color_map)
+ {
+ g_warning ("Could not load background image: %s",
+ (err) ? err->message : "Unknown error");
+ g_clear_error (&err);
+ }
+
+ priv->olsen_map = gdk_pixbuf_new_from_file (DATADIR "/olsen_map.png",
+ &err);
+ if (!priv->olsen_map)
+ {
+ g_warning ("Could not load olsen map: %s",
+ (err) ? err->message : "Unknown error");
+ g_clear_error (&err);
+ }
+ priv->olsen_map_channels = gdk_pixbuf_get_n_channels (priv->olsen_map);
+ priv->olsen_map_pixels = gdk_pixbuf_get_pixels (priv->olsen_map);
+ priv->olsen_map_rowstride = gdk_pixbuf_get_rowstride (priv->olsen_map);
+
+ priv->tzdb = tz_load_db ();
+
+ g_signal_connect (self, "button-press-event", G_CALLBACK (button_press_event),
+ NULL);
+
+ load_backward_tz (self);
+}
+
+CcTimezoneMap *
+cc_timezone_map_new (void)
+{
+ return g_object_new (CC_TYPE_TIMEZONE_MAP, NULL);
+}
+
+void
+cc_timezone_map_set_timezone (CcTimezoneMap *map,
+ const gchar *timezone)
+{
+ GPtrArray *locations;
+ guint i;
+ char *real_tz;
+
+ real_tz = g_hash_table_lookup (map->priv->alias_db, timezone);
+
+ locations = tz_get_locations (map->priv->tzdb);
+
+ for (i = 0; i < locations->len; i++)
+ {
+ TzLocation *loc = locations->pdata[i];
+
+ if (!g_strcmp0 (loc->zone, real_tz ? real_tz : timezone))
+ {
+ set_location (map, loc);
+ break;
+ }
+ }
+
+ gtk_widget_queue_draw (GTK_WIDGET (map));
+}
+
+void
+cc_timezone_map_set_coords (CcTimezoneMap *map, gdouble lon, gdouble lat)
+{
+ const gchar * zone = cc_timezone_map_get_timezone_at_coords (map, lon, lat);
+ cc_timezone_map_set_timezone (map, zone);
+}
+
+const gchar *
+cc_timezone_map_get_timezone_at_coords (CcTimezoneMap *map, gdouble lon, gdouble lat)
+{
+ gint x = (int)(2048.0 / 360.0 * (180.0 + lon));
+ gint y = (int)(1024.0 / 180.0 * (90.0 - lat));
+ gint offset = map->priv->olsen_map_rowstride * y + x * map->priv->olsen_map_channels;
+ guchar color0 = map->priv->olsen_map_pixels[offset];
+ guchar color1 = map->priv->olsen_map_pixels[offset + 1];
+ gint zone = ((color0 & 248) << 1) + ((color1 >>4) & 15);
+
+ const gchar * city = NULL;
+ if (zone < G_N_ELEMENTS(olsen_map_timezones))
+ city = olsen_map_timezones[zone];
+
+ if (city != NULL) {
+ return city;
+ }
+ else {
+ GtkAllocation alloc;
+ gtk_widget_get_allocation (GTK_WIDGET (map), &alloc);
+ x = convert_longtitude_to_x(lon, alloc.width);
+ y = convert_latitude_to_y(lat, alloc.height);
+ TzLocation * loc = get_loc_for_xy(GTK_WIDGET (map), x, y);
+ return loc->zone;
+ }
+}
+
+void
+cc_timezone_map_set_watermark (CcTimezoneMap *map, const gchar * watermark)
+{
+ if (map->priv->watermark)
+ g_free (map->priv->watermark);
+
+ map->priv->watermark = g_strdup (watermark);
+ gtk_widget_queue_draw (GTK_WIDGET (map));
+}
+
+TzLocation *
+cc_timezone_map_get_location (CcTimezoneMap *map)
+{
+ return map->priv->location;
+}