summaryrefslogtreecommitdiffstats
path: root/panels/datetime/cc-timezone-map.c
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--panels/datetime/cc-timezone-map.c530
1 files changed, 530 insertions, 0 deletions
diff --git a/panels/datetime/cc-timezone-map.c b/panels/datetime/cc-timezone-map.c
new file mode 100644
index 0000000..863b4c9
--- /dev/null
+++ b/panels/datetime/cc-timezone-map.c
@@ -0,0 +1,530 @@
+/*
+ * Copyright (C) 2010 Intel, Inc
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ *
+ * Author: Thomas Wood <thomas.wood@intel.com>
+ *
+ */
+
+#include "cc-timezone-map.h"
+#include <math.h>
+#include <string.h>
+#include "tz.h"
+
+#define PIN_HOT_POINT_X 8
+#define PIN_HOT_POINT_Y 15
+
+#define DATETIME_RESOURCE_PATH "/org/gnome/control-center/datetime"
+
+typedef struct
+{
+ gdouble offset;
+ guchar red;
+ guchar green;
+ guchar blue;
+ guchar alpha;
+} CcTimezoneMapOffset;
+
+struct _CcTimezoneMap
+{
+ GtkWidget parent_instance;
+
+ GdkTexture *orig_background;
+ GdkTexture *orig_background_dim;
+
+ GdkTexture *background;
+ GdkTexture *pin;
+
+ TzDB *tzdb;
+ TzLocation *location;
+
+ gchar *bubble_text;
+};
+
+G_DEFINE_TYPE (CcTimezoneMap, cc_timezone_map, GTK_TYPE_WIDGET)
+
+enum
+{
+ LOCATION_CHANGED,
+ LAST_SIGNAL
+};
+
+static guint signals[LAST_SIGNAL];
+
+static GdkTexture *
+texture_from_resource (const gchar *resource_path,
+ GError **error)
+{
+ g_autofree gchar *full_path = g_strdup_printf ("resource://%s", resource_path);
+ g_autoptr(GFile) file = g_file_new_for_uri (full_path);
+ g_autoptr(GdkTexture) texture = gdk_texture_new_from_file (file, error);
+
+ return g_steal_pointer (&texture);
+}
+
+static void
+cc_timezone_map_dispose (GObject *object)
+{
+ CcTimezoneMap *self = CC_TIMEZONE_MAP (object);
+
+ g_clear_object (&self->orig_background);
+ g_clear_object (&self->orig_background_dim);
+ g_clear_object (&self->background);
+ g_clear_object (&self->pin);
+ g_clear_pointer (&self->bubble_text, g_free);
+
+ G_OBJECT_CLASS (cc_timezone_map_parent_class)->dispose (object);
+}
+
+static void
+cc_timezone_map_finalize (GObject *object)
+{
+ CcTimezoneMap *self = CC_TIMEZONE_MAP (object);
+
+ g_clear_pointer (&self->tzdb, tz_db_free);
+
+ G_OBJECT_CLASS (cc_timezone_map_parent_class)->finalize (object);
+}
+
+/* GtkWidget functions */
+static void
+cc_timezone_map_measure (GtkWidget *widget,
+ GtkOrientation orientation,
+ gint for_size,
+ gint *minimum,
+ gint *natural,
+ gint *minimum_baseline,
+ gint *natural_baseline)
+{
+ CcTimezoneMap *map = CC_TIMEZONE_MAP (widget);
+ gint size;
+
+ switch (orientation)
+ {
+ case GTK_ORIENTATION_HORIZONTAL:
+ size = gdk_texture_get_width (map->orig_background);
+ break;
+
+ case GTK_ORIENTATION_VERTICAL:
+ size = gdk_texture_get_height (map->orig_background);
+ break;
+ }
+
+ if (minimum != NULL)
+ *minimum = size;
+ if (natural != NULL)
+ *natural = size;
+}
+
+static void
+cc_timezone_map_size_allocate (GtkWidget *widget,
+ gint width,
+ gint height,
+ gint baseline)
+{
+ CcTimezoneMap *map = CC_TIMEZONE_MAP (widget);
+ GdkTexture *texture;
+
+ if (!gtk_widget_is_sensitive (widget))
+ texture = map->orig_background_dim;
+ else
+ texture = map->orig_background;
+
+ g_clear_object (&map->background);
+ map->background = g_object_ref (texture);
+
+ GTK_WIDGET_CLASS (cc_timezone_map_parent_class)->size_allocate (widget,
+ width,
+ height,
+ baseline);
+}
+
+static gdouble
+convert_longitude_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 void
+draw_text_bubble (CcTimezoneMap *map,
+ GtkSnapshot *snapshot,
+ gint width,
+ gint height,
+ gdouble pointx,
+ gdouble pointy)
+{
+ static const double corner_radius = 9.0;
+ static const double margin_top = 12.0;
+ static const double margin_bottom = 12.0;
+ static const double margin_left = 24.0;
+ static const double margin_right = 24.0;
+
+ GskRoundedRect rounded_rect;
+ PangoRectangle text_rect;
+ PangoLayout *layout;
+ GdkRGBA rgba;
+ double x;
+ double y;
+ double bubble_width;
+ double bubble_height;
+
+ if (!map->bubble_text)
+ return;
+
+ layout = gtk_widget_create_pango_layout (GTK_WIDGET (map), NULL);
+
+ /* Layout the text */
+ pango_layout_set_alignment (layout, PANGO_ALIGN_CENTER);
+ pango_layout_set_spacing (layout, 3);
+ pango_layout_set_markup (layout, map->bubble_text, -1);
+
+ pango_layout_get_pixel_extents (layout, NULL, &text_rect);
+
+ /* Calculate the bubble size based on the text layout size */
+ bubble_width = text_rect.width + margin_left + margin_right;
+ bubble_height = text_rect.height + margin_top + margin_bottom;
+
+ if (pointx < width / 2)
+ x = pointx + 25;
+ else
+ x = pointx - bubble_width - 25;
+
+ y = pointy - bubble_height / 2;
+
+ /* Make sure it fits in the visible area */
+ x = CLAMP (x, 0, width - bubble_width);
+ y = CLAMP (y, 0, height - bubble_height);
+
+ gtk_snapshot_save (snapshot);
+
+ gsk_rounded_rect_init (&rounded_rect,
+ &GRAPHENE_RECT_INIT (x, y, bubble_width, bubble_height),
+ &GRAPHENE_SIZE_INIT (corner_radius, corner_radius),
+ &GRAPHENE_SIZE_INIT (corner_radius, corner_radius),
+ &GRAPHENE_SIZE_INIT (corner_radius, corner_radius),
+ &GRAPHENE_SIZE_INIT (corner_radius, corner_radius));
+
+ gtk_snapshot_push_rounded_clip (snapshot, &rounded_rect);
+
+ rgba = (GdkRGBA) {
+ .red = 0.2,
+ .green = 0.2,
+ .blue = 0.2,
+ .alpha = 0.7,
+ };
+ gtk_snapshot_append_color (snapshot,
+ &rgba,
+ &GRAPHENE_RECT_INIT (x, y, bubble_width, bubble_height));
+
+
+ rgba = (GdkRGBA) {
+ .red = 1.0,
+ .green = 1.0,
+ .blue = 1.0,
+ .alpha = 1.0,
+ };
+ gtk_snapshot_translate (snapshot, &GRAPHENE_POINT_INIT (x + margin_left, y + margin_top));
+ gtk_snapshot_append_layout (snapshot, layout, &rgba);
+
+ gtk_snapshot_pop (snapshot);
+ gtk_snapshot_restore (snapshot);
+
+ g_object_unref (layout);
+}
+
+static void
+cc_timezone_map_snapshot (GtkWidget *widget,
+ GtkSnapshot *snapshot)
+{
+ CcTimezoneMap *map = CC_TIMEZONE_MAP (widget);
+ gdouble pointx, pointy;
+ gint width, height;
+
+ width = gtk_widget_get_width (widget);
+ height = gtk_widget_get_height (widget);
+
+ /* paint background */
+ gtk_snapshot_append_texture (snapshot,
+ map->background,
+ &GRAPHENE_RECT_INIT (0, 0, width, height));
+
+ if (map->location)
+ {
+ pointx = convert_longitude_to_x (map->location->longitude, width);
+ pointy = convert_latitude_to_y (map->location->latitude, height);
+
+ pointx = CLAMP (floor (pointx), 0, width);
+ pointy = CLAMP (floor (pointy), 0, height);
+
+ draw_text_bubble (map, snapshot, width, height, pointx, pointy);
+
+ if (map->pin)
+ {
+ gtk_snapshot_append_texture (snapshot,
+ map->pin,
+ &GRAPHENE_RECT_INIT (pointx - PIN_HOT_POINT_X,
+ pointy - PIN_HOT_POINT_Y,
+ gdk_texture_get_width (map->pin),
+ gdk_texture_get_height (map->pin)));
+ }
+ }
+}
+
+static void
+update_cursor (GtkWidget *widget)
+{
+ const gchar *cursor_name = NULL;
+
+ if (!gtk_widget_get_realized (widget))
+ return;
+
+ if (gtk_widget_is_sensitive (widget))
+ cursor_name = "pointer";
+
+ gtk_widget_set_cursor_from_name (widget, cursor_name);
+}
+
+static void
+cc_timezone_map_state_flags_changed (GtkWidget *widget,
+ GtkStateFlags prev_state)
+{
+ update_cursor (widget);
+
+ if (GTK_WIDGET_CLASS (cc_timezone_map_parent_class)->state_flags_changed)
+ GTK_WIDGET_CLASS (cc_timezone_map_parent_class)->state_flags_changed (widget, prev_state);
+}
+
+
+static void
+cc_timezone_map_class_init (CcTimezoneMapClass *klass)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS (klass);
+ GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
+
+ object_class->dispose = cc_timezone_map_dispose;
+ object_class->finalize = cc_timezone_map_finalize;
+
+ widget_class->measure = cc_timezone_map_measure;
+ widget_class->size_allocate = cc_timezone_map_size_allocate;
+ widget_class->snapshot = cc_timezone_map_snapshot;
+ widget_class->state_flags_changed = cc_timezone_map_state_flags_changed;
+
+ 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)
+{
+ g_autoptr(TzInfo) info = NULL;
+
+ map->location = location;
+
+ info = tz_info_from_location (map->location);
+
+ gtk_widget_queue_draw (GTK_WIDGET (map));
+
+ g_signal_emit (map, signals[LOCATION_CHANGED], 0, map->location);
+}
+
+static gboolean
+map_clicked_cb (GtkGestureClick *self,
+ gint n_press,
+ gdouble x,
+ gdouble y,
+ CcTimezoneMap *map)
+{
+ const GPtrArray *array;
+ gint width, height;
+ GList *distances = NULL;
+ gint i;
+
+ /* work out the coordinates */
+
+ array = tz_get_locations (map->tzdb);
+
+ width = gtk_widget_get_width (GTK_WIDGET (map));
+ height = gtk_widget_get_height (GTK_WIDGET (map));
+
+ for (i = 0; i < array->len; i++)
+ {
+ gdouble pointx, pointy, dx, dy;
+ TzLocation *loc = array->pdata[i];
+
+ pointx = convert_longitude_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);
+
+
+ set_location (map, (TzLocation*) distances->data);
+
+ g_list_free (distances);
+
+ return TRUE;
+}
+
+static void
+cc_timezone_map_init (CcTimezoneMap *map)
+{
+ GtkGesture *click_gesture;
+ GError *err = NULL;
+
+ map->orig_background = texture_from_resource (DATETIME_RESOURCE_PATH "/bg.png", &err);
+ if (!map->orig_background)
+ {
+ g_warning ("Could not load background image: %s",
+ (err) ? err->message : "Unknown error");
+ g_clear_error (&err);
+ }
+
+ map->orig_background_dim = texture_from_resource (DATETIME_RESOURCE_PATH "/bg_dim.png", &err);
+ if (!map->orig_background_dim)
+ {
+ g_warning ("Could not load background image: %s",
+ (err) ? err->message : "Unknown error");
+ g_clear_error (&err);
+ }
+
+ map->pin = texture_from_resource (DATETIME_RESOURCE_PATH "/pin.png", &err);
+ if (!map->pin)
+ {
+ g_warning ("Could not load pin icon: %s",
+ (err) ? err->message : "Unknown error");
+ g_clear_error (&err);
+ }
+
+ map->tzdb = tz_load_db ();
+
+ click_gesture = gtk_gesture_click_new ();
+ g_signal_connect (click_gesture, "pressed", G_CALLBACK (map_clicked_cb), map);
+ gtk_widget_add_controller (GTK_WIDGET (map), GTK_EVENT_CONTROLLER (click_gesture));
+}
+
+CcTimezoneMap *
+cc_timezone_map_new (void)
+{
+ return g_object_new (CC_TYPE_TIMEZONE_MAP, NULL);
+}
+
+gboolean
+cc_timezone_map_set_timezone (CcTimezoneMap *map,
+ const gchar *timezone)
+{
+ GPtrArray *locations;
+ guint i;
+ g_autofree gchar *real_tz = NULL;
+ gboolean ret;
+
+ real_tz = tz_info_get_clean_name (map->tzdb, timezone);
+
+ locations = tz_get_locations (map->tzdb);
+ ret = FALSE;
+
+ 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);
+ ret = TRUE;
+ break;
+ }
+ }
+
+ if (ret)
+ gtk_widget_queue_draw (GTK_WIDGET (map));
+
+ return ret;
+}
+
+void
+cc_timezone_map_set_bubble_text (CcTimezoneMap *map,
+ const gchar *text)
+{
+ g_free (map->bubble_text);
+ map->bubble_text = g_strdup (text);
+
+ gtk_widget_queue_draw (GTK_WIDGET (map));
+}
+
+TzLocation *
+cc_timezone_map_get_location (CcTimezoneMap *map)
+{
+ return map->location;
+}