add time-admin source code

1 files changed, 638 insertions, 0 deletions

diff --git a/capplets/time-admin/src/time-map.c b/capplets/time-admin/src/time-map.c
new file mode 100644
index 00000000..2d86660e
--- /dev/null
+++ b/capplets/time-admin/src/time-map.c
@@ -0,0 +1,638 @@
+/*  time-admin 
+*   Copyright (C) 2018  zhuyaliang https://github.com/zhuyaliang/
+*
+*   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 3 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 <https://www.gnu.org/licenses/>.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+#include "time-map.h"
+#include <math.h>
+
+#define PIN_HOT_POINT_X 8
+#define PIN_HOT_POINT_Y 15
+
+typedef struct
+{
+    gdouble offset;
+    guchar red;
+    guchar green;
+    guchar blue;
+    guchar alpha;
+}TimezoneMapOffset; 
+enum
+{
+    LOCATION_CHANGED,
+    LAST_SIGNAL
+};
+ 
+G_DEFINE_TYPE (TimezoneMap, timezone_map, GTK_TYPE_WIDGET)
+static guint signals[LAST_SIGNAL];
+static TimezoneMapOffset 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 void
+cc_timezone_map_dispose (GObject *object)
+{
+    TimezoneMap *self = TIMEZONEMAP (object);
+
+    g_clear_object (&self->orig_background);
+    g_clear_object (&self->orig_background_dim);
+    g_clear_object (&self->orig_color_map);
+    g_clear_object (&self->background);
+    g_clear_object (&self->pin);
+    g_clear_pointer (&self->bubble_text, g_free);
+
+    if (self->color_map)
+    {
+        g_clear_object (&self->color_map);
+
+        self->visible_map_pixels = NULL;
+        self->visible_map_rowstride = 0;
+    }
+
+    G_OBJECT_CLASS (timezone_map_parent_class)->dispose (object);
+}
+static void
+timezone_map_finalize (GObject *object)
+{
+    TimezoneMap *self = TIMEZONEMAP (object);
+
+    g_clear_pointer (&self->tzdb, TimeZoneDateBaseFree);
+
+    G_OBJECT_CLASS (timezone_map_parent_class)->finalize (object);
+}
+static void
+cc_timezone_map_get_preferred_width (GtkWidget *widget,
+                                     gint      *minimum,
+                                     gint      *natural)
+{
+    TimezoneMap *map = TIMEZONEMAP (widget);
+    gint size;
+
+    size = gdk_pixbuf_get_width (map->orig_background);
+
+    if (minimum != NULL)
+        *minimum = size;
+    if (natural != NULL)
+        *natural = size;
+}
+
+static void
+cc_timezone_map_get_preferred_height (GtkWidget *widget,
+                                      gint      *minimum,
+                                      gint      *natural)
+{
+    TimezoneMap *map = TIMEZONEMAP (widget);
+    gint size;
+
+    size = gdk_pixbuf_get_height (map->orig_background);
+
+    if (minimum != NULL)
+        *minimum = size;
+    if (natural != NULL)
+        *natural = size;
+}
+static void
+cc_timezone_map_size_allocate (GtkWidget     *widget,
+                               GtkAllocation *allocation)
+{
+    TimezoneMap *map = TIMEZONEMAP (widget);
+    GdkPixbuf *pixbuf;
+
+    if (map->background)
+        g_object_unref (map->background);
+
+    if (!gtk_widget_is_sensitive (widget))
+        pixbuf = map->orig_background_dim;
+    else
+        pixbuf = map->orig_background;
+
+    map->background = gdk_pixbuf_scale_simple (pixbuf,
+                                               allocation->width,
+                                               allocation->height,
+                                               GDK_INTERP_BILINEAR);
+
+    if (map->color_map)
+        g_object_unref (map->color_map);
+
+    map->color_map = gdk_pixbuf_scale_simple (map->orig_color_map,
+                                              allocation->width,
+                                              allocation->height,
+                                              GDK_INTERP_BILINEAR);
+
+    map->visible_map_pixels = gdk_pixbuf_get_pixels (map->color_map);
+    map->visible_map_rowstride = gdk_pixbuf_get_rowstride (map->color_map);
+    GTK_WIDGET_CLASS (timezone_map_parent_class)->size_allocate (widget,
+                                                                 allocation);
+}
+
+static void
+cc_timezone_map_realize (GtkWidget *widget)
+{
+    GdkWindowAttr attr = { 0, };
+    GtkAllocation allocation;
+    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);
+
+    gdk_window_set_user_data (window, widget);
+    gtk_widget_set_window (widget, window);
+}
+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 (cairo_t *cr,
+                  GtkWidget *widget,
+                  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;
+
+    TimezoneMap *map = TIMEZONEMAP (widget);
+    GtkAllocation alloc;
+    PangoLayout *layout;
+    PangoRectangle text_rect;
+    double x;
+    double y;
+    double width;
+    double height;
+
+    if (!map->bubble_text)
+        return;
+
+    gtk_widget_get_allocation (widget, &alloc);
+    layout = gtk_widget_create_pango_layout (widget, 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 */
+    width = text_rect.width + margin_left + margin_right;
+    height = text_rect.height + margin_top + margin_bottom;
+
+    if (pointx < alloc.width / 2)
+        x = pointx + 25;
+    else
+        x = pointx - width - 25;
+
+    y = pointy - height / 2;
+
+    /* Make sure it fits in the visible area */
+    x = CLAMP (x, 0, alloc.width - width);
+    y = CLAMP (y, 0, alloc.height - height);
+
+    cairo_save (cr);
+    cairo_translate (cr, x, y);
+
+    /* Draw the bubble */
+    cairo_new_sub_path (cr);
+    cairo_arc (cr, width - corner_radius, corner_radius, corner_radius, radians (-90), radians (0));
+    cairo_arc (cr, width - corner_radius, height - corner_radius, corner_radius, radians (0), radians (90));
+    cairo_arc (cr, corner_radius, height - corner_radius, corner_radius, radians (90), radians (180));
+    cairo_arc (cr, corner_radius, corner_radius, corner_radius, radians (180), radians (270));
+    cairo_close_path (cr);
+
+    cairo_set_source_rgba (cr, 0.2, 0.2, 0.2, 0.7);
+    cairo_fill (cr);
+
+    /* And finally draw the text */
+    cairo_set_source_rgb (cr, 1, 1, 1);
+    cairo_move_to (cr, margin_left, margin_top);
+    pango_cairo_show_layout (cr, layout);
+
+    g_object_unref (layout);
+    cairo_restore (cr);
+}
+
+static gboolean
+cc_timezone_map_draw (GtkWidget *widget,
+                      cairo_t   *cr)
+{
+    TimezoneMap *map = TIMEZONEMAP (widget);
+    g_autoptr(GdkPixbuf) orig_hilight = NULL;
+    GtkAllocation alloc;
+    g_autofree gchar *file = NULL;
+    g_autoptr(GError) err = NULL;
+    gdouble pointx, pointy;
+    char buf[16];
+
+    gtk_widget_get_allocation (widget, &alloc);
+
+    /* paint background */
+    gdk_cairo_set_source_pixbuf (cr, map->background, 0, 0);
+    cairo_paint (cr);
+
+    /* paint hilight */
+    if (gtk_widget_is_sensitive (widget))
+    {
+        file = g_strdup_printf ("/usr/share/mate-time-admin/map/timezone_%s.png",
+                                g_ascii_formatd (buf, sizeof (buf),
+                               "%g", map->selected_offset));
+    }
+    else
+    {
+        file = g_strdup_printf ("/usr/share/mate-time-admin/map/timezone_%s_dim.png",
+                                g_ascii_formatd (buf, sizeof (buf),
+                               "%g", map->selected_offset));
+    }
+
+    orig_hilight = gdk_pixbuf_new_from_file (file, &err);
+
+    if (!orig_hilight)
+    {
+        g_warning ("Could not load hilight: %s",
+                   (err) ? err->message : "Unknown Error");
+    }
+    else
+    {
+        g_autoptr(GdkPixbuf) hilight = NULL;
+
+        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);
+    }
+
+    if (map->location)
+    {
+        pointx = convert_longitude_to_x (map->location->longitude, alloc.width);
+        pointy = convert_latitude_to_y (map->location->latitude, alloc.height);
+
+        pointx = CLAMP (floor (pointx), 0, alloc.width);
+        pointy = CLAMP (floor (pointy), 0, alloc.height);
+
+        draw_text_bubble (cr, widget, pointx, pointy);
+        if (map->pin)
+        {
+            gdk_cairo_set_source_pixbuf (cr, map->pin,
+                                         pointx - PIN_HOT_POINT_X,
+                                         pointy - PIN_HOT_POINT_Y);
+            cairo_paint (cr);
+        }
+    }
+
+    return TRUE;
+}
+static void
+update_cursor (GtkWidget *widget)
+{
+    GdkWindow *window;
+    g_autoptr(GdkCursor) cursor = NULL;
+
+    if (!gtk_widget_get_realized (widget))
+        return;
+
+    if (gtk_widget_is_sensitive (widget))
+    {
+        GdkDisplay *display;
+        display = gtk_widget_get_display (widget);
+        cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
+    }
+
+    window = gtk_widget_get_window (widget);
+    gdk_window_set_cursor (window, cursor);
+}
+
+static void
+cc_timezone_map_state_flags_changed (GtkWidget     *widget,
+                                     GtkStateFlags  prev_state)
+{
+    update_cursor (widget);
+
+    if (GTK_WIDGET_CLASS (timezone_map_parent_class)->state_flags_changed)
+        GTK_WIDGET_CLASS (timezone_map_parent_class)->state_flags_changed (widget, prev_state);
+}
+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 (TimezoneMap   *map,
+              TzLocation    *location)
+{
+    g_autoptr(TzInfo) info = NULL;
+    
+    map->location = location;
+    info = tz_info_from_location (map->location);
+    map->selected_offset = tz_location_get_utc_offset (map->location)
+                                                      / (60.0*60.0) + 
+                                                      ((info->daylight) ? -1.0 : 0.0);
+    
+    g_signal_emit (map, signals[LOCATION_CHANGED], 0, map->location,NULL);
+}
+
+static gboolean
+button_press_event (TimezoneMap    *map,
+                    GdkEventButton *event)
+{
+    gint x, y;
+    guchar r, g, b, a;
+    guchar *pixels;
+    gint rowstride;
+    guint i;
+
+    const GPtrArray *array;
+    gint width, height;
+    GList *distances = NULL;
+    GtkAllocation alloc;
+
+    x = event->x;
+    y = event->y;
+
+
+    rowstride = map->visible_map_rowstride;
+    pixels = map->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)
+        {
+            map->selected_offset = color_codes[i].offset;
+        }
+    }
+
+    gtk_widget_queue_draw (GTK_WIDGET (map));
+
+  /* work out the co-ordinates */
+
+    array = tz_get_locations (map->tzdb);
+
+    gtk_widget_get_allocation (GTK_WIDGET (map), &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_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
+timezone_map_class_init (TimezoneMapClass *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 = timezone_map_finalize;
+
+    widget_class->get_preferred_width = cc_timezone_map_get_preferred_width;
+    widget_class->get_preferred_height = cc_timezone_map_get_preferred_height;
+    widget_class->size_allocate = cc_timezone_map_size_allocate;
+    widget_class->realize = cc_timezone_map_realize;
+    widget_class->draw = cc_timezone_map_draw;
+    widget_class->state_flags_changed = cc_timezone_map_state_flags_changed;
+    
+    
+    signals[LOCATION_CHANGED] = g_signal_new ("location-changed",
+                                               TYPE_TIMEZONE_MAP,
+                                               G_SIGNAL_RUN_FIRST,
+                                               0,
+                                               NULL,
+                                               NULL,
+                                               g_cclosure_marshal_VOID__POINTER,
+                                               G_TYPE_NONE, 1,
+                                               G_TYPE_POINTER);
+/*
+    signals[LOCATION_CHANGED] = g_signal_new ("location-changed",
+                                               G_TYPE_FROM_CLASS (klass),
+                                               G_SIGNAL_RUN_LAST,
+                                               0,
+                                               NULL,NULL,
+                                               g_cclosure_marshal_VOID__VOID,
+                                               G_TYPE_NONE, 0);
+*/
+}
+
+static void
+timezone_map_init (TimezoneMap *map)
+{
+    GError *err = NULL;
+    
+    map->orig_background = gdk_pixbuf_new_from_file ("/usr/share/mate-time-admin/map/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 = gdk_pixbuf_new_from_file("/usr/share/mate-time-admin/map/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->orig_color_map = gdk_pixbuf_new_from_file ("/usr/share/mate-time-admin/map/cc.png",&err);
+    if (!map->orig_color_map)
+    {
+        g_warning ("Could not load background image: %s",
+                  (err) ? err->message : "Unknown error");
+        g_clear_error (&err);
+    }
+
+    map->pin = gdk_pixbuf_new_from_file ("/usr/share/mate-time-admin/map/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 ();
+
+    g_signal_connect_object (map, 
+                            "button-press-event", 
+                             G_CALLBACK (button_press_event), 
+                             map, 
+                             G_CONNECT_SWAPPED);
+}
+gboolean timezone_map_set_timezone (TimezoneMap *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;
+}
+TzLocation *timezone_map_get_location (TimezoneMap *map)
+{  
+    return map->location;
+}
+void timezone_map_set_bubble_text (TimezoneMap *map,
+                                   const gchar *text)
+{
+    g_free (map->bubble_text);
+    map->bubble_text = g_strdup (text);
+    gtk_widget_queue_draw (GTK_WIDGET (map));
+}
+
+TimezoneMap * timezone_map_new (void)
+{  
+    return g_object_new (TYPE_TIMEZONE_MAP, NULL);
+}