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Diffstat (limited to 'libmap/cc-timezone-map.c')
| -rw-r--r-- | libmap/cc-timezone-map.c | 1185 |
1 files changed, 1185 insertions, 0 deletions
diff --git a/libmap/cc-timezone-map.c b/libmap/cc-timezone-map.c new file mode 100644 index 0000000..ec12c84 --- /dev/null +++ b/libmap/cc-timezone-map.c @@ -0,0 +1,1185 @@ +/* + * 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; +} |