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annotate xia-inhibitor.c @ 1:bdab58c3db61 version-1

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author Guido Berhoerster <guido+xinhibit-applet@berhoerster.name>
date Sat, 27 Apr 2013 09:38:02 +0200
parents 9a16bf50daba
children 957d697d27d3
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Guido Berhoerster <guido+xinhibit-applet@berhoerster.name>
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1 /*
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Guido Berhoerster <guido+xinhibit-applet@berhoerster.name>
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2 * Copyright (C) 2013 Guido Berhoerster <guido+xinhibit-applet@berhoerster.name>
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3 *
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4 * Permission is hereby granted, free of charge, to any person obtaining
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Guido Berhoerster <guido+xinhibit-applet@berhoerster.name>
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5 * a copy of this software and associated documentation files (the
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Guido Berhoerster <guido+xinhibit-applet@berhoerster.name>
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6 * "Software"), to deal in the Software without restriction, including
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7 * without limitation the rights to use, copy, modify, merge, publish,
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Guido Berhoerster <guido+xinhibit-applet@berhoerster.name>
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8 * distribute, sublicense, and/or sell copies of the Software, and to
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Guido Berhoerster <guido+xinhibit-applet@berhoerster.name>
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9 * permit persons to whom the Software is furnished to do so, subject to
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Guido Berhoerster <guido+xinhibit-applet@berhoerster.name>
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10 * the following conditions:
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11 *
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12 * The above copyright notice and this permission notice shall be included
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Guido Berhoerster <guido+xinhibit-applet@berhoerster.name>
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13 * in all copies or substantial portions of the Software.
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14 *
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15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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Guido Berhoerster <guido+xinhibit-applet@berhoerster.name>
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17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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18 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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19 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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20 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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21 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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22 */
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23
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24 #include <X11/Xlib.h>
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25 #include <X11/keysym.h>
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26 #include <X11/extensions/Xext.h>
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27 #ifdef HAVE_LIBXTST
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28 #include <X11/extensions/XTest.h>
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29 #endif /* HAVE_LIBXTST */
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30 #include <glib.h>
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31 #include <glib/gi18n.h>
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32 #include <gdk/gdkx.h>
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33 #include "xia-inhibitor.h"
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34
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35 #define FAKE_EVENT_TIMEOUT 20
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36
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37 G_DEFINE_TYPE(XiaInhibitor, xia_inhibitor, G_TYPE_OBJECT)
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38
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39 #define XIA_INHIBITOR_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE((obj), \
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40 XIA_TYPE_INHIBITOR, XiaInhibitorPrivate))
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41
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42 struct _XiaInhibitorPrivate
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43 {
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44 XiaInhibitor *inhibitor;
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45 gboolean inhibited;
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46 gboolean have_xtest;
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47 guint generate_fake_event_id;
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48 };
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49
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50 enum { PROP_0, PROP_INHIBITED };
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51
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52 static gboolean
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53 generate_fake_event(gpointer data)
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54 {
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55 #ifdef HAVE_LIBXTST
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56 XiaInhibitor *self = XIA_INHIBITOR(data);
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57 static KeyCode keycode = 0;
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58
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59 if (!self->priv->have_xtest) {
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60 return (TRUE);
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61 }
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62
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63 if (keycode == 0) {
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64 keycode = XKeysymToKeycode(gdk_x11_get_default_xdisplay(),
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65 XK_Alt_L);
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66 if (keycode == 0) {
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67 return (TRUE);
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68 }
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69 }
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70
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71 XTestFakeKeyEvent(gdk_x11_get_default_xdisplay(), keycode, True, 0);
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72 XTestFakeKeyEvent(gdk_x11_get_default_xdisplay(), keycode, False, 0);
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73
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74 g_debug("Generated fake key event using XTEST");
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75 #endif /* HAVE_LIBXTST */
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76
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77 return (TRUE);
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78 }
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79
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80 static void
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81 xia_inhibitor_set_property(GObject *object, guint property_id,
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82 const GValue *value, GParamSpec *pspec)
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83 {
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84 XiaInhibitor *self = XIA_INHIBITOR(object);
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85
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86 switch (property_id) {
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87 case PROP_INHIBITED: {
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88 gboolean inhibited = g_value_get_boolean(value);
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89 if (self->priv->inhibited == inhibited) {
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90 return;
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91 }
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92
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93 if (inhibited) {
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94 self->priv->generate_fake_event_id = \
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95 g_timeout_add_seconds(FAKE_EVENT_TIMEOUT,
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96 (GSourceFunc)generate_fake_event, self);
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97 } else {
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98 g_source_remove(self->priv->generate_fake_event_id);
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99 self->priv->generate_fake_event_id = 0;
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100 }
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101
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102 self->priv->inhibited = inhibited;
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103
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104 g_debug("Automatic power management is %s", (inhibited) ?
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105 "inhibited" : "enabled");
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106 break;
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107 }
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108 default:
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109 G_OBJECT_WARN_INVALID_PROPERTY_ID(object, property_id, pspec);
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110 break;
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111 }
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112 }
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113
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114 static void
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115 xia_inhibitor_get_property(GObject *object, guint property_id, GValue *value,
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116 GParamSpec *pspec)
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117 {
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118 XiaInhibitor *self = XIA_INHIBITOR(object);
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119
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120 switch (property_id) {
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121 case PROP_INHIBITED:
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122 g_value_set_boolean(value, self->priv->inhibited);
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123 break;
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124 default:
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125 G_OBJECT_WARN_INVALID_PROPERTY_ID(object, property_id,
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126 pspec);
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127 break;
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128 }
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129 }
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130
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131 static void
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132 xia_inhibitor_finalize(GObject *gobject)
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133 {
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134 XiaInhibitor *self = XIA_INHIBITOR(gobject);
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135
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136 if (self->priv->generate_fake_event_id != 0) {
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137 g_source_remove(self->priv->generate_fake_event_id);
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138 self->priv->generate_fake_event_id = 0;
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139 }
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140
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141 G_OBJECT_CLASS(xia_inhibitor_parent_class)->finalize(gobject);
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142 }
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143
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144 static void
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145 xia_inhibitor_class_init(XiaInhibitorClass *klass)
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146 {
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147 GObjectClass *gobject_class = G_OBJECT_CLASS(klass);
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148 GParamSpec *pspec;
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149
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150 gobject_class->set_property = xia_inhibitor_set_property;
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151 gobject_class->get_property = xia_inhibitor_get_property;
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152 gobject_class->finalize = xia_inhibitor_finalize;
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153
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154 pspec = g_param_spec_boolean("inhibited", "Inhibited",
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155 "Whether automatic power management is inhibited", FALSE,
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156 G_PARAM_READWRITE);
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157 g_object_class_install_property(gobject_class, PROP_INHIBITED, pspec);
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158
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159 g_type_class_add_private(klass, sizeof (XiaInhibitorPrivate));
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160 }
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161
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162 static void
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163 xia_inhibitor_init(XiaInhibitor *self)
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164 {
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165 #ifdef HAVE_LIBXTST
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166 int event_base;
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167 int error_base;
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168 int xtest_major;
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169 int xtest_minor;
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170 #endif /* HAVE_LIBXTST */
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171
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172 self->priv = XIA_INHIBITOR_GET_PRIVATE(self);
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173
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174 self->priv->inhibited = FALSE;
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175 self->priv->generate_fake_event_id = 0;
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176
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177 #ifdef HAVE_LIBXTST
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178 self->priv->have_xtest = ((gboolean)XTestQueryExtension(
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179 gdk_x11_get_default_xdisplay(), &event_base, &error_base,
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180 &xtest_major, &xtest_minor));
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181 #endif /* HAVE_LIBXTST */
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182 }
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183
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184 void
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185 xia_inhibitor_set_inhibited(XiaInhibitor *self, gboolean inhibited)
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186 {
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187 g_return_if_fail(XIA_IS_INHIBITOR(self));
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188
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189 g_object_set(G_OBJECT(self), "inhibited", inhibited, NULL);
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190 }
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191
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192 gboolean
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193 xia_inhibitor_get_inhibited(XiaInhibitor *self)
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194 {
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195 gboolean inhibited;
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196
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197 g_return_val_if_fail(XIA_IS_INHIBITOR(self), FALSE);
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198
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199 g_object_get(G_OBJECT(self), "inhibited", &inhibited, NULL);
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200
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201 return (inhibited);
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202 }
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203
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204 XiaInhibitor *
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205 xia_inhibitor_new(void)
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206 {
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207 return (g_object_new(XIA_TYPE_INHIBITOR, NULL));
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208 }