/* * Copyright (C) 2010 Intel, Inc * Copyright (C) 2011 Canonical Ltd. * * Portions from Ubiquity, Copyright (C) 2009 Canonical Ltd. * Written by Evan Dandrea * * 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 * */ #include "cc-timezone-map.h" #include #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; gdouble alpha = 1.0; GtkStyle *style; char buf[16]; gtk_widget_get_allocation (widget, &alloc); style = gtk_widget_get_style (widget); /* Check if insensitive */ if (gtk_widget_get_state (widget) == GTK_STATE_INSENSITIVE) alpha = 0.5; /* paint background */ gdk_cairo_set_source_color (cr, &style->bg[gtk_widget_get_state (widget)]); cairo_paint (cr); gdk_cairo_set_source_pixbuf (cr, priv->background, 0, 0); cairo_paint_with_alpha (cr, alpha); /* 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_with_alpha (cr, alpha); 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_with_alpha (cr, alpha); 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" 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; }