1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
|
/* GTK - The GIMP Toolkit
* Copyright (C) 2012 Red Hat, Inc.
*
* Authors:
* - Bastien Nocera <bnocera@redhat.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
/*
* Modified by the GTK+ Team and others 2012. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#include "config.h"
#include "gtksearchentry.h"
/**
* SECTION:gtksearchentry
* @Short_description: An entry which shows a search icon
* @Title: GtkSearchEntry
*
* #GtkSearchEntry is a subclass of #GtkEntry that has
* been tailored for use as a search entry.
*
* It will show an inactive symbolic "find" icon when the
* search entry is empty, and a symbolic "clear" icon when
* there is text. Clicking on the "clear" icon will empty
* the search entry.
*
* Note that the search/clear icon is shown using a secondary
* icon, and thus does not work if you are using the secondary
* icon position for some other purpose.
*
* Since: 3.6
*/
typedef struct {
guint delayed_changed_id;
gboolean in_timeout;
} GtkSearchEntryPrivate;
G_DEFINE_TYPE_WITH_PRIVATE (GtkSearchEntry, gtk_search_entry, GTK_TYPE_ENTRY)
/* 150 mseconds of delay */
#define DELAYED_TIMEOUT_ID 150
/* This widget got created without a private structure, meaning
* that we cannot now have one without breaking ABI */
#define GET_PRIV(e) ((GtkSearchEntryPrivate *) gtk_search_entry_get_instance_private ((GtkSearchEntry *) (e)))
static void
gtk_search_entry_finalize (GObject *object)
{
GtkSearchEntryPrivate *priv = GET_PRIV (object);
if (priv->delayed_changed_id > 0)
g_source_remove (priv->delayed_changed_id);
G_OBJECT_CLASS (gtk_search_entry_parent_class)->finalize (object);
}
static void
gtk_search_entry_class_init (GtkSearchEntryClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->finalize = gtk_search_entry_finalize;
}
static void
search_entry_clear_cb (GtkEntry *entry,
GtkEntryIconPosition icon_pos,
gpointer user_data)
{
if (icon_pos == GTK_ENTRY_ICON_SECONDARY)
gtk_entry_set_text (entry, "");
}
static gboolean
gtk_search_entry_changed_timeout_cb (gpointer user_data)
{
GtkSearchEntry *entry = user_data;
GtkSearchEntryPrivate *priv = GET_PRIV (entry);
priv->in_timeout = TRUE;
g_signal_emit_by_name (entry, "changed");
priv->delayed_changed_id = 0;
priv->in_timeout = FALSE;
return G_SOURCE_REMOVE;
}
static void
reset_timeout (GtkSearchEntry *entry)
{
GtkSearchEntryPrivate *priv = GET_PRIV (entry);
if (priv->delayed_changed_id > 0)
g_source_remove (priv->delayed_changed_id);
priv->delayed_changed_id = g_timeout_add (DELAYED_TIMEOUT_ID,
gtk_search_entry_changed_timeout_cb,
entry);
}
static void
search_entry_changed_cb (GtkSearchEntry *entry,
gpointer user_data)
{
GtkSearchEntryPrivate *priv = GET_PRIV (entry);
const char *str, *icon_name;
gboolean active;
gboolean cleared = FALSE;
/* Update the icons first */
str = gtk_entry_get_text (GTK_ENTRY (entry));
if (str == NULL || *str == '\0')
{
icon_name = NULL;
active = FALSE;
cleared = TRUE;
}
else
{
if (gtk_widget_get_direction (GTK_WIDGET (entry)) == GTK_TEXT_DIR_RTL)
icon_name = "edit-clear-rtl-symbolic";
else
icon_name = "edit-clear-symbolic";
active = TRUE;
}
g_object_set (entry,
"secondary-icon-name", icon_name,
"secondary-icon-activatable", active,
"secondary-icon-sensitive", active,
NULL);
/* Don't stop the emission if it's the timeout
* emitting the signal, otherwise we'll get in a loop */
if (priv->in_timeout)
return;
/* Don't emit the signal in a timeout if we've cleared
* the entry, we don't want a delay */
if (cleared)
return;
/* Queue up the timeout */
reset_timeout (entry);
g_signal_stop_emission_by_name (entry, "changed");
}
static void
gtk_search_entry_init (GtkSearchEntry *entry)
{
g_signal_connect (entry, "changed",
G_CALLBACK (search_entry_changed_cb), NULL);
g_signal_connect (entry, "icon-release",
G_CALLBACK (search_entry_clear_cb), NULL);
g_object_set (entry,
"primary-icon-name", "edit-find-symbolic",
"primary-icon-activatable", FALSE,
"primary-icon-sensitive", FALSE,
NULL);
}
/**
* gtk_search_entry_new:
*
* Creates a #GtkSearchEntry, with a find icon when the search field is
* empty, and a clear icon when it isn't.
*
* Return value: a new #GtkSearchEntry
*
* Since: 3.6
*/
GtkWidget *
gtk_search_entry_new (void)
{
return GTK_WIDGET (g_object_new (GTK_TYPE_SEARCH_ENTRY, NULL));
}
|
