1 | /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*- |
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2 | * |
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3 | * Copyright (C) 2007 William Jon McCann <mccann@jhu.edu> |
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4 | * Copyright (C) 2008 Red Hat, Inc. |
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5 | * |
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6 | * This program is free software; you can redistribute it and/or modify |
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7 | * it under the terms of the GNU General Public License as published by |
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8 | * the Free Software Foundation; either version 2 of the License, or |
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9 | * (at your option) any later version. |
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10 | * |
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11 | * This program is distributed in the hope that it will be useful, |
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12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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14 | * GNU General Public License for more details. |
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15 | * |
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16 | * You should have received a copy of the GNU General Public License |
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17 | * along with this program; if not, write to the Free Software |
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18 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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19 | * |
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20 | * Written by: William Jon McCann <mccann@jhu.edu> |
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21 | * Ray Strode <rstrode@redhat.com> |
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22 | */ |
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23 | |
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24 | #include "config.h" |
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25 | |
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26 | #include <stdlib.h> |
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27 | #include <stdio.h> |
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28 | #include <unistd.h> |
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29 | #include <string.h> |
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30 | #include <errno.h> |
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31 | #include <dirent.h> |
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32 | #include <sys/stat.h> |
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33 | |
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34 | #include <glib.h> |
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35 | #include <glib/gi18n.h> |
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36 | #include <glib/gstdio.h> |
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37 | #include <gtk/gtk.h> |
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38 | |
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39 | #include "gdm-clock-widget.h" |
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40 | |
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41 | #define GDM_CLOCK_WIDGET_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), GDM_TYPE_CLOCK_WIDGET, GdmClockWidgetPrivate)) |
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42 | |
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43 | struct GdmClockWidgetPrivate |
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44 | { |
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45 | GtkWidget *label; |
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46 | char *time_format; |
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47 | guint update_clock_id; |
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48 | guint should_show_seconds : 1; |
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49 | }; |
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50 | |
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51 | static void gdm_clock_widget_class_init (GdmClockWidgetClass *klass); |
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52 | static void gdm_clock_widget_init (GdmClockWidget *clock_widget); |
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53 | static void gdm_clock_widget_finalize (GObject *object); |
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54 | static gboolean update_timeout_cb (GdmClockWidget *clock); |
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55 | |
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56 | G_DEFINE_TYPE (GdmClockWidget, gdm_clock_widget, GTK_TYPE_ALIGNMENT) |
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57 | |
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58 | static char * |
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59 | get_time_format (GdmClockWidget *clock) |
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60 | { |
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61 | const char *time_format; |
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62 | const char *date_format; |
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63 | char *clock_format; |
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64 | char *result; |
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65 | |
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66 | time_format = clock->priv->should_show_seconds ? _("%l:%M:%S %p") : _("%l:%M %p"); |
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67 | /* translators: replace %e with %d if, when the day of the |
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68 | * month as a decimal number is a single digit, it |
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69 | * should begin with a 0 in your locale (e.g. "May |
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70 | * 01" instead of "May 1"). |
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71 | */ |
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72 | date_format = _("%a %b %e"); |
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73 | /* translators: reverse the order of these arguments |
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74 | * if the time should come before the |
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75 | * date on a clock in your locale. |
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76 | */ |
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77 | clock_format = g_strdup_printf (_("%1$s, %2$s"), |
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78 | date_format, |
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79 | time_format); |
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80 | |
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81 | result = g_locale_from_utf8 (clock_format, -1, NULL, NULL, NULL); |
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82 | g_free (clock_format); |
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83 | |
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84 | return result; |
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85 | } |
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86 | |
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87 | static void |
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88 | update_clock (GtkLabel *label, |
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89 | const char *format) |
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90 | { |
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91 | time_t t; |
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92 | struct tm *tm; |
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93 | char buf[256]; |
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94 | char *utf8; |
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95 | |
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96 | time (&t); |
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97 | tm = localtime (&t); |
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98 | if (tm == NULL) { |
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99 | g_warning ("Unable to get broken down local time"); |
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100 | return; |
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101 | } |
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102 | if (strftime (buf, sizeof (buf), format, tm) == 0) { |
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103 | g_warning ("Couldn't format time: %s", format); |
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104 | strcpy (buf, "???"); |
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105 | } |
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106 | utf8 = g_locale_to_utf8 (buf, -1, NULL, NULL, NULL); |
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107 | gtk_label_set_text (label, utf8); |
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108 | g_free (utf8); |
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109 | } |
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110 | |
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111 | static void |
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112 | set_clock_timeout (GdmClockWidget *clock, |
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113 | time_t now) |
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114 | { |
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115 | GTimeVal tv; |
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116 | int timeouttime; |
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117 | |
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118 | if (clock->priv->update_clock_id > 0) { |
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119 | g_source_remove (clock->priv->update_clock_id); |
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120 | clock->priv->update_clock_id = 0; |
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121 | } |
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122 | |
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123 | g_get_current_time (&tv); |
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124 | timeouttime = (G_USEC_PER_SEC - tv.tv_usec) / 1000 + 1; |
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125 | |
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126 | /* timeout of one minute if we don't care about the seconds */ |
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127 | if (! clock->priv->should_show_seconds) { |
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128 | timeouttime += 1000 * (59 - now % 60); |
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129 | } |
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130 | |
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131 | clock->priv->update_clock_id = g_timeout_add (timeouttime, |
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132 | (GSourceFunc)update_timeout_cb, |
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133 | clock); |
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134 | } |
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135 | |
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136 | static gboolean |
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137 | update_timeout_cb (GdmClockWidget *clock) |
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138 | { |
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139 | time_t new_time; |
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140 | |
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141 | time (&new_time); |
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142 | |
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143 | if (clock->priv->label != NULL) { |
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144 | update_clock (GTK_LABEL (clock->priv->label), |
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145 | clock->priv->time_format); |
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146 | } |
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147 | |
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148 | set_clock_timeout (clock, new_time); |
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149 | |
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150 | return FALSE; |
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151 | } |
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152 | |
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153 | static void |
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154 | remove_timeout (GdmClockWidget *clock) |
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155 | { |
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156 | if (clock->priv->update_clock_id > 0) { |
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157 | g_source_remove (clock->priv->update_clock_id); |
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158 | clock->priv->update_clock_id = 0; |
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159 | } |
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160 | } |
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161 | |
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162 | static void |
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163 | gdm_clock_widget_size_request (GtkWidget *widget, |
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164 | GtkRequisition *requisition) |
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165 | { |
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166 | PangoFontMetrics *metrics; |
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167 | PangoContext *context; |
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168 | int ascent; |
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169 | int descent; |
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170 | int padding; |
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171 | |
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172 | if (GTK_WIDGET_CLASS (gdm_clock_widget_parent_class)->size_request) { |
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173 | GTK_WIDGET_CLASS (gdm_clock_widget_parent_class)->size_request (widget, requisition); |
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174 | } |
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175 | |
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176 | gtk_widget_ensure_style (widget); |
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177 | context = gtk_widget_get_pango_context (widget); |
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178 | metrics = pango_context_get_metrics (context, |
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179 | widget->style->font_desc, |
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180 | pango_context_get_language (context)); |
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181 | |
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182 | ascent = pango_font_metrics_get_ascent (metrics); |
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183 | descent = pango_font_metrics_get_descent (metrics); |
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184 | padding = PANGO_PIXELS (ascent + descent) / 2.0; |
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185 | requisition->height += padding; |
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186 | |
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187 | pango_font_metrics_unref (metrics); |
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188 | } |
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189 | |
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190 | static void |
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191 | gdm_clock_widget_class_init (GdmClockWidgetClass *klass) |
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192 | { |
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193 | GObjectClass *object_class; |
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194 | GtkWidgetClass *widget_class; |
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195 | |
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196 | object_class = G_OBJECT_CLASS (klass); |
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197 | widget_class = GTK_WIDGET_CLASS (klass); |
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198 | |
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199 | object_class->finalize = gdm_clock_widget_finalize; |
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200 | widget_class->size_request = gdm_clock_widget_size_request; |
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201 | |
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202 | g_type_class_add_private (klass, sizeof (GdmClockWidgetPrivate)); |
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203 | } |
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204 | |
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205 | static void |
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206 | gdm_clock_widget_init (GdmClockWidget *widget) |
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207 | { |
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208 | GtkWidget *box; |
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209 | |
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210 | widget->priv = GDM_CLOCK_WIDGET_GET_PRIVATE (widget); |
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211 | |
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212 | box = gtk_hbox_new (FALSE, 6); |
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213 | gtk_widget_show (box); |
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214 | gtk_container_add (GTK_CONTAINER (widget), box); |
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215 | |
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216 | widget->priv->label = gtk_label_new (""); |
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217 | gtk_widget_show (widget->priv->label); |
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218 | gtk_box_pack_start (GTK_BOX (box), widget->priv->label, FALSE, FALSE, 0); |
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219 | |
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220 | widget->priv->time_format = get_time_format (widget); |
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221 | update_timeout_cb (widget); |
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222 | } |
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223 | |
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224 | static void |
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225 | gdm_clock_widget_finalize (GObject *object) |
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226 | { |
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227 | GdmClockWidget *clock_widget; |
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228 | |
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229 | g_return_if_fail (object != NULL); |
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230 | g_return_if_fail (GDM_IS_CLOCK_WIDGET (object)); |
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231 | |
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232 | clock_widget = GDM_CLOCK_WIDGET (object); |
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233 | |
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234 | g_return_if_fail (clock_widget->priv != NULL); |
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235 | |
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236 | remove_timeout (clock_widget); |
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237 | |
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238 | G_OBJECT_CLASS (gdm_clock_widget_parent_class)->finalize (object); |
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239 | } |
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240 | |
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241 | GtkWidget * |
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242 | gdm_clock_widget_new (void) |
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243 | { |
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244 | GObject *object; |
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245 | |
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246 | object = g_object_new (GDM_TYPE_CLOCK_WIDGET, |
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247 | NULL); |
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248 | |
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249 | return GTK_WIDGET (object); |
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250 | } |
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