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gtk2/gtk/gtkimmulticontext.c

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/* GTK - The GIMP Toolkit
* Copyright (C) 2000 Red Hat, Inc.
*
* 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, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include <config.h>
#include <string.h>
#include <locale.h>
#include "gtkimmulticontext.h"
#include "gtkimmodule.h"
#include "gtkmain.h"
#include "gtkradiomenuitem.h"
#include "gtkintl.h"
#include "gtkprivate.h"
#include "gtkalias.h"
struct _GtkIMMulticontextPrivate
{
GdkWindow *client_window;
GdkRectangle cursor_location;
guint use_preedit : 1;
guint have_cursor_location : 1;
guint focus_in : 1;
};
static void gtk_im_multicontext_class_init (GtkIMMulticontextClass *class);
static void gtk_im_multicontext_init (GtkIMMulticontext *im_multicontext);
static void gtk_im_multicontext_finalize (GObject *object);
static void gtk_im_multicontext_set_slave (GtkIMMulticontext *multicontext,
GtkIMContext *slave,
gboolean finalizing);
static void gtk_im_multicontext_set_client_window (GtkIMContext *context,
GdkWindow *window);
static void gtk_im_multicontext_get_preedit_string (GtkIMContext *context,
gchar **str,
PangoAttrList **attrs,
gint *cursor_pos);
static gboolean gtk_im_multicontext_filter_keypress (GtkIMContext *context,
GdkEventKey *event);
static void gtk_im_multicontext_focus_in (GtkIMContext *context);
static void gtk_im_multicontext_focus_out (GtkIMContext *context);
static void gtk_im_multicontext_reset (GtkIMContext *context);
static void gtk_im_multicontext_set_cursor_location (GtkIMContext *context,
GdkRectangle *area);
static void gtk_im_multicontext_set_use_preedit (GtkIMContext *context,
gboolean use_preedit);
static gboolean gtk_im_multicontext_get_surrounding (GtkIMContext *context,
gchar **text,
gint *cursor_index);
static void gtk_im_multicontext_set_surrounding (GtkIMContext *context,
const char *text,
gint len,
gint cursor_index);
static void gtk_im_multicontext_preedit_start_cb (GtkIMContext *slave,
GtkIMMulticontext *multicontext);
static void gtk_im_multicontext_preedit_end_cb (GtkIMContext *slave,
GtkIMMulticontext *multicontext);
static void gtk_im_multicontext_preedit_changed_cb (GtkIMContext *slave,
GtkIMMulticontext *multicontext);
static void gtk_im_multicontext_commit_cb (GtkIMContext *slave,
const gchar *str,
GtkIMMulticontext *multicontext);
static gboolean gtk_im_multicontext_retrieve_surrounding_cb (GtkIMContext *slave,
GtkIMMulticontext *multicontext);
static gboolean gtk_im_multicontext_delete_surrounding_cb (GtkIMContext *slave,
gint offset,
gint n_chars,
GtkIMMulticontext *multicontext);
static GtkIMContextClass *parent_class;
static const gchar *global_context_id = NULL;
GType
gtk_im_multicontext_get_type (void)
{
static GType im_multicontext_type = 0;
if (!im_multicontext_type)
{
static const GTypeInfo im_multicontext_info =
{
sizeof (GtkIMMulticontextClass),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) gtk_im_multicontext_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GtkIMMulticontext),
0, /* n_preallocs */
(GInstanceInitFunc) gtk_im_multicontext_init,
};
im_multicontext_type =
g_type_register_static (GTK_TYPE_IM_CONTEXT, g_intern_static_string ("GtkIMMulticontext"),
&im_multicontext_info, 0);
}
return im_multicontext_type;
}
static void
gtk_im_multicontext_class_init (GtkIMMulticontextClass *class)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (class);
GtkIMContextClass *im_context_class = GTK_IM_CONTEXT_CLASS (class);
parent_class = g_type_class_peek_parent (class);
im_context_class->set_client_window = gtk_im_multicontext_set_client_window;
im_context_class->get_preedit_string = gtk_im_multicontext_get_preedit_string;
im_context_class->filter_keypress = gtk_im_multicontext_filter_keypress;
im_context_class->focus_in = gtk_im_multicontext_focus_in;
im_context_class->focus_out = gtk_im_multicontext_focus_out;
im_context_class->reset = gtk_im_multicontext_reset;
im_context_class->set_cursor_location = gtk_im_multicontext_set_cursor_location;
im_context_class->set_use_preedit = gtk_im_multicontext_set_use_preedit;
im_context_class->set_surrounding = gtk_im_multicontext_set_surrounding;
im_context_class->get_surrounding = gtk_im_multicontext_get_surrounding;
gobject_class->finalize = gtk_im_multicontext_finalize;
}
static void
gtk_im_multicontext_init (GtkIMMulticontext *multicontext)
{
multicontext->slave = NULL;
multicontext->priv = g_new0 (GtkIMMulticontextPrivate, 1);
multicontext->priv->use_preedit = TRUE;
multicontext->priv->have_cursor_location = FALSE;
multicontext->priv->focus_in = FALSE;
}
/**
* gtk_im_multicontext_new:
*
* Creates a new #GtkIMMulticontext.
*
* Returns: a new #GtkIMMulticontext.
**/
GtkIMContext *
gtk_im_multicontext_new (void)
{
return g_object_new (GTK_TYPE_IM_MULTICONTEXT, NULL);
}
static void
gtk_im_multicontext_finalize (GObject *object)
{
GtkIMMulticontext *multicontext = GTK_IM_MULTICONTEXT (object);
gtk_im_multicontext_set_slave (multicontext, NULL, TRUE);
g_free (multicontext->priv);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gtk_im_multicontext_set_slave (GtkIMMulticontext *multicontext,
GtkIMContext *slave,
gboolean finalizing)
{
GtkIMMulticontextPrivate *priv = multicontext->priv;
gboolean need_preedit_changed = FALSE;
if (multicontext->slave)
{
if (!finalizing)
gtk_im_context_reset (multicontext->slave);
g_signal_handlers_disconnect_by_func (multicontext->slave,
gtk_im_multicontext_preedit_start_cb,
multicontext);
g_signal_handlers_disconnect_by_func (multicontext->slave,
gtk_im_multicontext_preedit_end_cb,
multicontext);
g_signal_handlers_disconnect_by_func (multicontext->slave,
gtk_im_multicontext_preedit_changed_cb,
multicontext);
g_signal_handlers_disconnect_by_func (multicontext->slave,
gtk_im_multicontext_commit_cb,
multicontext);
g_object_unref (multicontext->slave);
multicontext->slave = NULL;
if (!finalizing)
need_preedit_changed = TRUE;
}
multicontext->slave = slave;
if (multicontext->slave)
{
g_object_ref (multicontext->slave);
g_signal_connect (multicontext->slave, "preedit_start",
G_CALLBACK (gtk_im_multicontext_preedit_start_cb),
multicontext);
g_signal_connect (multicontext->slave, "preedit_end",
G_CALLBACK (gtk_im_multicontext_preedit_end_cb),
multicontext);
g_signal_connect (multicontext->slave, "preedit_changed",
G_CALLBACK (gtk_im_multicontext_preedit_changed_cb),
multicontext);
g_signal_connect (multicontext->slave, "commit",
G_CALLBACK (gtk_im_multicontext_commit_cb),
multicontext);
g_signal_connect (multicontext->slave, "retrieve_surrounding",
G_CALLBACK (gtk_im_multicontext_retrieve_surrounding_cb),
multicontext);
g_signal_connect (multicontext->slave, "delete_surrounding",
G_CALLBACK (gtk_im_multicontext_delete_surrounding_cb),
multicontext);
if (!priv->use_preedit) /* Default is TRUE */
gtk_im_context_set_use_preedit (slave, FALSE);
if (priv->client_window)
gtk_im_context_set_client_window (slave, priv->client_window);
if (priv->have_cursor_location)
gtk_im_context_set_cursor_location (slave, &priv->cursor_location);
if (priv->focus_in)
gtk_im_context_focus_in (slave);
}
if (need_preedit_changed)
g_signal_emit_by_name (multicontext, "preedit_changed");
}
static GtkIMContext *
gtk_im_multicontext_get_slave (GtkIMMulticontext *multicontext)
{
if (!multicontext->slave)
{
GtkIMContext *slave;
if (!global_context_id)
{
gchar *locale = _gtk_get_lc_ctype ();
global_context_id = _gtk_im_module_get_default_context_id (locale);
g_free (locale);
}
slave = _gtk_im_module_create (global_context_id);
gtk_im_multicontext_set_slave (multicontext, slave, FALSE);
g_object_unref (slave);
multicontext->context_id = global_context_id;
}
return multicontext->slave;
}
static void
gtk_im_multicontext_set_client_window (GtkIMContext *context,
GdkWindow *window)
{
GtkIMMulticontext *multicontext = GTK_IM_MULTICONTEXT (context);
GtkIMContext *slave = gtk_im_multicontext_get_slave (multicontext);
multicontext->priv->client_window = window;
if (slave)
gtk_im_context_set_client_window (slave, window);
}
static void
gtk_im_multicontext_get_preedit_string (GtkIMContext *context,
gchar **str,
PangoAttrList **attrs,
gint *cursor_pos)
{
GtkIMMulticontext *multicontext = GTK_IM_MULTICONTEXT (context);
GtkIMContext *slave = gtk_im_multicontext_get_slave (multicontext);
if (slave)
gtk_im_context_get_preedit_string (slave, str, attrs, cursor_pos);
else
{
if (str)
*str = g_strdup ("");
if (attrs)
*attrs = pango_attr_list_new ();
}
}
static gboolean
gtk_im_multicontext_filter_keypress (GtkIMContext *context,
GdkEventKey *event)
{
GtkIMMulticontext *multicontext = GTK_IM_MULTICONTEXT (context);
GtkIMContext *slave = gtk_im_multicontext_get_slave (multicontext);
if (slave)
return gtk_im_context_filter_keypress (slave, event);
else
return FALSE;
}
static void
gtk_im_multicontext_focus_in (GtkIMContext *context)
{
GtkIMMulticontext *multicontext = GTK_IM_MULTICONTEXT (context);
GtkIMContext *slave;
/* If the global context type is different from the context we were
* using before, get rid of the old slave and create a new one
* for the new global context type.
*/
if (!multicontext->context_id ||
strcmp (global_context_id, multicontext->context_id) != 0)
gtk_im_multicontext_set_slave (multicontext, NULL, FALSE);
slave = gtk_im_multicontext_get_slave (multicontext);
multicontext->priv->focus_in = TRUE;
if (slave)
gtk_im_context_focus_in (slave);
}
static void
gtk_im_multicontext_focus_out (GtkIMContext *context)
{
GtkIMMulticontext *multicontext = GTK_IM_MULTICONTEXT (context);
GtkIMContext *slave = gtk_im_multicontext_get_slave (multicontext);
multicontext->priv->focus_in = FALSE;
if (slave)
gtk_im_context_focus_out (slave);
}
static void
gtk_im_multicontext_reset (GtkIMContext *context)
{
GtkIMMulticontext *multicontext = GTK_IM_MULTICONTEXT (context);
GtkIMContext *slave = gtk_im_multicontext_get_slave (multicontext);
if (slave)
gtk_im_context_reset (slave);
}
static void
gtk_im_multicontext_set_cursor_location (GtkIMContext *context,
GdkRectangle *area)
{
GtkIMMulticontext *multicontext = GTK_IM_MULTICONTEXT (context);
GtkIMContext *slave = gtk_im_multicontext_get_slave (multicontext);
multicontext->priv->have_cursor_location = TRUE;
multicontext->priv->cursor_location = *area;
if (slave)
gtk_im_context_set_cursor_location (slave, area);
}
static void
gtk_im_multicontext_set_use_preedit (GtkIMContext *context,
gboolean use_preedit)
{
GtkIMMulticontext *multicontext = GTK_IM_MULTICONTEXT (context);
GtkIMContext *slave = gtk_im_multicontext_get_slave (multicontext);
use_preedit = use_preedit != FALSE;
multicontext->priv->use_preedit = use_preedit;
if (slave)
gtk_im_context_set_use_preedit (slave, use_preedit);
}
static gboolean
gtk_im_multicontext_get_surrounding (GtkIMContext *context,
gchar **text,
gint *cursor_index)
{
GtkIMMulticontext *multicontext = GTK_IM_MULTICONTEXT (context);
GtkIMContext *slave = gtk_im_multicontext_get_slave (multicontext);
if (slave)
return gtk_im_context_get_surrounding (slave, text, cursor_index);
else
{
if (text)
*text = NULL;
if (cursor_index)
*cursor_index = 0;
return FALSE;
}
}
static void
gtk_im_multicontext_set_surrounding (GtkIMContext *context,
const char *text,
gint len,
gint cursor_index)
{
GtkIMMulticontext *multicontext = GTK_IM_MULTICONTEXT (context);
GtkIMContext *slave = gtk_im_multicontext_get_slave (multicontext);
if (slave)
gtk_im_context_set_surrounding (slave, text, len, cursor_index);
}
static void
gtk_im_multicontext_preedit_start_cb (GtkIMContext *slave,
GtkIMMulticontext *multicontext)
{
g_signal_emit_by_name (multicontext, "preedit_start");
}
static void
gtk_im_multicontext_preedit_end_cb (GtkIMContext *slave,
GtkIMMulticontext *multicontext)
{
g_signal_emit_by_name (multicontext, "preedit_end");
}
static void
gtk_im_multicontext_preedit_changed_cb (GtkIMContext *slave,
GtkIMMulticontext *multicontext)
{
g_signal_emit_by_name (multicontext, "preedit_changed");
}
static void
gtk_im_multicontext_commit_cb (GtkIMContext *slave,
const gchar *str,
GtkIMMulticontext *multicontext)
{
g_signal_emit_by_name (multicontext, "commit", str);;
}
static gboolean
gtk_im_multicontext_retrieve_surrounding_cb (GtkIMContext *slave,
GtkIMMulticontext *multicontext)
{
gboolean result;
g_signal_emit_by_name (multicontext, "retrieve_surrounding", &result);
return result;
}
static gboolean
gtk_im_multicontext_delete_surrounding_cb (GtkIMContext *slave,
gint offset,
gint n_chars,
GtkIMMulticontext *multicontext)
{
gboolean result;
g_signal_emit_by_name (multicontext, "delete_surrounding",
offset, n_chars, &result);
return result;
}
static void
activate_cb (GtkWidget *menuitem,
GtkIMMulticontext *context)
{
if (GTK_CHECK_MENU_ITEM (menuitem)->active)
{
const gchar *id = g_object_get_data (G_OBJECT (menuitem), "gtk-context-id");
gtk_im_context_reset (GTK_IM_CONTEXT (context));
global_context_id = id;
gtk_im_multicontext_set_slave (context, NULL, FALSE);
}
}
/**
* gtk_im_multicontext_append_menuitems:
* @context: a #GtkIMMultiContext
* @menushell: a #GtkMenuShell
*
* Add menuitems for various available input methods to a menu;
* the menuitems, when selected, will switch the input method
* for the context and the global default input method.
**/
void
gtk_im_multicontext_append_menuitems (GtkIMMulticontext *context,
GtkMenuShell *menushell)
{
const GtkIMContextInfo **contexts;
guint n_contexts, i;
GSList *group = NULL;
_gtk_im_module_list (&contexts, &n_contexts);
for (i=0; i < n_contexts; i++)
{
GtkWidget *menuitem;
const gchar *translated_name;
#ifdef ENABLE_NLS
if (contexts[i]->domain && contexts[i]->domain_dirname &&
contexts[i]->domain[0] && contexts[i]->domain_dirname[0])
{
if (strcmp (contexts[i]->domain, GETTEXT_PACKAGE) == 0 &&
strcmp (contexts[i]->domain_dirname, GTK_LOCALEDIR) == 0)
/* Input method may have a name in the GTK+ message catalog */
translated_name = _(contexts[i]->context_name);
else
/* Input method has own message catalog */
{
bindtextdomain (contexts[i]->domain,
contexts[i]->domain_dirname);
#ifdef HAVE_BIND_TEXTDOMAIN_CODESET
bind_textdomain_codeset (contexts[i]->domain, "UTF-8");
#endif
translated_name = dgettext (contexts[i]->domain, contexts[i]->context_name);
}
}
else
/* Either domain or domain_dirname is NULL or "". We assume that
* input method does not want a translated name in this case
*/
translated_name = contexts[i]->context_name;
#else
translated_name = contexts[i]->context_name;
#endif
menuitem = gtk_radio_menu_item_new_with_label (group,
translated_name);
if ((global_context_id == NULL && group == NULL) ||
(global_context_id &&
strcmp (contexts[i]->context_id, global_context_id) == 0))
gtk_check_menu_item_set_active (GTK_CHECK_MENU_ITEM (menuitem),
TRUE);
group = gtk_radio_menu_item_get_group (GTK_RADIO_MENU_ITEM (menuitem));
g_object_set_data (G_OBJECT (menuitem), g_intern_static_string ("gtk-context-id"),
(char *)contexts[i]->context_id);
g_signal_connect (menuitem, "activate",
G_CALLBACK (activate_cb), context);
gtk_widget_show (menuitem);
gtk_menu_shell_append (menushell, menuitem);
}
g_free (contexts);
}
#define __GTK_IM_MULTICONTEXT_C__
#include "gtkaliasdef.c"
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