forked from AuroraMiddleware/gtk
fce9c8b7d4
2008-06-30 Cody Russell <bratsche@gnome.org>
* Practically everything changed.
Change all references of GIMP Toolkit (and variations of it)
to GTK+ Toolkit, showing no mercy at all to our beloved
ancestry. (#540529)
svn path=/trunk/; revision=20709
1022 lines
27 KiB
C
1022 lines
27 KiB
C
/* GTK - The GTK+ Toolkit
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* Copyright (C) 2000 Red Hat, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include "config.h"
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#include <stdlib.h>
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#include <string.h>
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#include <gdk/gdkkeysyms.h>
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#include "gtkaccelgroup.h"
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#include "gtkimcontextsimple.h"
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#include "gtksettings.h"
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#include "gtkwidget.h"
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#include "gtkintl.h"
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#include "gtkalias.h"
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typedef struct _GtkComposeTable GtkComposeTable;
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typedef struct _GtkComposeTableCompact GtkComposeTableCompact;
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struct _GtkComposeTable
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{
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const guint16 *data;
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gint max_seq_len;
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gint n_seqs;
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};
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struct _GtkComposeTableCompact
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{
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const guint16 *data;
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gint max_seq_len;
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gint n_index_size;
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gint n_index_stride;
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};
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/* This file contains the table of the compose sequences,
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* static const guint16 gtk_compose_seqs_compact[] = {}
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* IT is generated from the compose-parse.py script.
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*/
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#include "gtkimcontextsimpleseqs.h"
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/* From the values below, the value 22 means the number of different first keysyms
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* that exist in the Compose file (from Xorg). When running compose-parse.py without
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* parameters, you get the count that you can put here. Needed when updating the
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* gtkimcontextsimpleseqs.h header file (contains the compose sequences).
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*/
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static const GtkComposeTableCompact gtk_compose_table_compact = {
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gtk_compose_seqs_compact,
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5,
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21,
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6
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};
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static const guint16 gtk_compose_ignore[] = {
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GDK_Shift_L,
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GDK_Shift_R,
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GDK_Control_L,
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GDK_Control_R,
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GDK_Caps_Lock,
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GDK_Shift_Lock,
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GDK_Meta_L,
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GDK_Meta_R,
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GDK_Alt_L,
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GDK_Alt_R,
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GDK_Super_L,
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GDK_Super_R,
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GDK_Hyper_L,
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GDK_Hyper_R,
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GDK_Mode_switch,
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GDK_ISO_Level3_Shift
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};
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static void gtk_im_context_simple_finalize (GObject *obj);
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static gboolean gtk_im_context_simple_filter_keypress (GtkIMContext *context,
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GdkEventKey *key);
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static void gtk_im_context_simple_reset (GtkIMContext *context);
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static void gtk_im_context_simple_get_preedit_string (GtkIMContext *context,
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gchar **str,
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PangoAttrList **attrs,
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gint *cursor_pos);
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G_DEFINE_TYPE (GtkIMContextSimple, gtk_im_context_simple, GTK_TYPE_IM_CONTEXT)
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static void
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gtk_im_context_simple_class_init (GtkIMContextSimpleClass *class)
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{
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GtkIMContextClass *im_context_class = GTK_IM_CONTEXT_CLASS (class);
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GObjectClass *gobject_class = G_OBJECT_CLASS (class);
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im_context_class->filter_keypress = gtk_im_context_simple_filter_keypress;
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im_context_class->reset = gtk_im_context_simple_reset;
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im_context_class->get_preedit_string = gtk_im_context_simple_get_preedit_string;
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gobject_class->finalize = gtk_im_context_simple_finalize;
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}
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static void
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gtk_im_context_simple_init (GtkIMContextSimple *im_context_simple)
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{
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}
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static void
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gtk_im_context_simple_finalize (GObject *obj)
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{
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GtkIMContextSimple *context_simple = GTK_IM_CONTEXT_SIMPLE (obj);
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if (context_simple->tables)
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{
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g_slist_foreach (context_simple->tables, (GFunc)g_free, NULL);
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g_slist_free (context_simple->tables);
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context_simple->tables = NULL;
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}
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G_OBJECT_CLASS (gtk_im_context_simple_parent_class)->finalize (obj);
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}
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/**
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* gtk_im_context_simple_new:
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*
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* Creates a new #GtkIMContextSimple.
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*
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* Returns: a new #GtkIMContextSimple.
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**/
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GtkIMContext *
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gtk_im_context_simple_new (void)
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{
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return g_object_new (GTK_TYPE_IM_CONTEXT_SIMPLE, NULL);
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}
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static void
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gtk_im_context_simple_commit_char (GtkIMContext *context,
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gunichar ch)
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{
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gchar buf[10];
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gint len;
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GtkIMContextSimple *context_simple = GTK_IM_CONTEXT_SIMPLE (context);
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g_return_if_fail (g_unichar_validate (ch));
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len = g_unichar_to_utf8 (ch, buf);
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buf[len] = '\0';
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if (context_simple->tentative_match || context_simple->in_hex_sequence)
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{
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context_simple->in_hex_sequence = FALSE;
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context_simple->tentative_match = 0;
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context_simple->tentative_match_len = 0;
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g_signal_emit_by_name (context_simple, "preedit_changed");
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g_signal_emit_by_name (context_simple, "preedit_end");
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}
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g_signal_emit_by_name (context, "commit", &buf);
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}
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static int
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compare_seq_index (const void *key, const void *value)
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{
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const guint *keysyms = key;
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const guint16 *seq = value;
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if (keysyms[0] < seq[0])
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return -1;
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else if (keysyms[0] > seq[0])
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return 1;
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return 0;
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}
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static int
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compare_seq (const void *key, const void *value)
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{
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int i = 0;
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const guint *keysyms = key;
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const guint16 *seq = value;
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while (keysyms[i])
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{
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if (keysyms[i] < seq[i])
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return -1;
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else if (keysyms[i] > seq[i])
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return 1;
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i++;
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}
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return 0;
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}
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static gboolean
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check_table (GtkIMContextSimple *context_simple,
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const GtkComposeTable *table,
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gint n_compose)
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{
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gint row_stride = table->max_seq_len + 2;
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guint16 *seq;
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/* Will never match, if the sequence in the compose buffer is longer
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* than the sequences in the table. Further, compare_seq (key, val)
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* will overrun val if key is longer than val. */
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if (n_compose > table->max_seq_len)
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return FALSE;
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seq = bsearch (context_simple->compose_buffer,
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table->data, table->n_seqs,
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sizeof (guint16) * row_stride,
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compare_seq);
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if (seq)
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{
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guint16 *prev_seq;
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/* Back up to the first sequence that matches to make sure
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* we find the exact match if their is one.
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*/
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while (seq > table->data)
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{
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prev_seq = seq - row_stride;
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if (compare_seq (context_simple->compose_buffer, prev_seq) != 0)
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break;
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seq = prev_seq;
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}
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if (n_compose == table->max_seq_len ||
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seq[n_compose] == 0) /* complete sequence */
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{
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guint16 *next_seq;
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gunichar value =
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0x10000 * seq[table->max_seq_len] + seq[table->max_seq_len + 1];
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/* We found a tentative match. See if there are any longer
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* sequences containing this subsequence
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*/
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next_seq = seq + row_stride;
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if (next_seq < table->data + row_stride * table->n_seqs)
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{
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if (compare_seq (context_simple->compose_buffer, next_seq) == 0)
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{
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context_simple->tentative_match = value;
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context_simple->tentative_match_len = n_compose;
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g_signal_emit_by_name (context_simple, "preedit_changed");
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return TRUE;
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}
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}
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gtk_im_context_simple_commit_char (GTK_IM_CONTEXT (context_simple), value);
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context_simple->compose_buffer[0] = 0;
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}
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return TRUE;
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}
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return FALSE;
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}
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static gboolean
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check_compact_table (GtkIMContextSimple *context_simple,
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const GtkComposeTableCompact *table,
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gint n_compose)
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{
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gint row_stride;
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guint16 *seq_index;
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guint16 *seq;
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gint i;
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/* Will never match, if the sequence in the compose buffer is longer
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* than the sequences in the table. Further, compare_seq (key, val)
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* will overrun val if key is longer than val. */
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if (n_compose > table->max_seq_len)
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return FALSE;
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seq_index = bsearch (context_simple->compose_buffer,
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table->data, table->n_index_size,
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sizeof (guint16) * table->n_index_stride,
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compare_seq_index);
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if (!seq_index)
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return FALSE;
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if (seq_index && n_compose == 1)
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return TRUE;
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seq = NULL;
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for (i = n_compose-1; i < table->max_seq_len; i++)
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{
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row_stride = i + 1;
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if (seq_index[i+1] - seq_index[i] > 0)
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{
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seq = bsearch (context_simple->compose_buffer + 1,
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table->data + seq_index[i], (seq_index[i+1] - seq_index[i]) / row_stride,
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sizeof (guint16) * row_stride,
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compare_seq);
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if (seq)
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{
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if (i == n_compose - 1)
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break;
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else
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{
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g_signal_emit_by_name (context_simple, "preedit_changed");
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return TRUE;
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}
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}
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}
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}
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if (!seq)
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return FALSE;
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else
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{
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gunichar value;
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value = seq[row_stride - 1];
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gtk_im_context_simple_commit_char (GTK_IM_CONTEXT (context_simple), value);
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context_simple->compose_buffer[0] = 0;
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return TRUE;
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}
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return FALSE;
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}
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/* When updating the table of the compose sequences, also update here.
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*/
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#define IS_DEAD_KEY(k) \
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(((k) >= GDK_dead_grave && (k) <= GDK_dead_stroke) || \
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g_unichar_type (gdk_keyval_to_unicode (k)) == G_UNICODE_NON_SPACING_MARK)
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static gboolean
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check_algorithmically (GtkIMContextSimple *context_simple,
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gint n_compose)
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{
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int i;
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int k;
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gunichar combination_buffer[GTK_MAX_COMPOSE_LEN];
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gunichar combination_buffer_temp[GTK_MAX_COMPOSE_LEN];
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gchar *combination_utf8, *nfc;
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gchar *combination_utf8_temp = NULL, *nfc_temp = NULL;
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if (n_compose >= GTK_MAX_COMPOSE_LEN)
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return FALSE;
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for (i = 0; i < n_compose && IS_DEAD_KEY (context_simple->compose_buffer[i]); i++)
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;
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if (i == n_compose)
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return TRUE;
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if (i > 0 && i == n_compose - 1)
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{
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combination_buffer[0] = gdk_keyval_to_unicode (context_simple->compose_buffer[i]);
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combination_buffer[n_compose] = 0;
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i--;
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while (i >= 0)
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{
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switch (context_simple->compose_buffer[i])
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{
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#define CASE(keysym, unicode) \
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case GDK_dead_##keysym: combination_buffer[i+1] = unicode; break
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CASE (grave, 0x0300);
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CASE (acute, 0x0301);
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CASE (circumflex, 0x0302);
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CASE (tilde, 0x0303); /* Normally is 0x303; Greek Polytonic needs 0x342.
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* We modified the compose sequences for now
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* so that for Greek we don't apply algorithmic
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* when perispomeni (0x342) is required
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* Filed report; pending, bug 14013 (Freedesktop).
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*/
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CASE (macron, 0x0304);
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CASE (breve, 0x0306);
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CASE (abovedot, 0x0307);
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CASE (diaeresis, 0x0308);
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CASE (abovering, 0x030A);
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CASE (doubleacute, 0x030B);
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CASE (caron, 0x030C);
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CASE (cedilla, 0x0327);
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CASE (ogonek, 0x0328); /* Normally is 0x328; Greek Polytonic needs 0x314.
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* We modified the compose sequences for now to
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* so that for Greek we don't apply algorithmic
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* when dasia (0x314) is required
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* Patch accepted in Xorg/GIT, may take a bit to propagate.
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*/
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CASE (dasia, 0x314);
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CASE (iota, 0x0345); /* Used by Greek Polytonic layout only; "ypogegrammeni" */
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CASE (voiced_sound, 0x3099); /* Per Marcus Khun keysyms.txt file. */
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CASE (semivoiced_sound, 0x309a); /* Per Marcus Khun keysyms.txt file. */
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CASE (belowdot, 0x0323);
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CASE (hook, 0x0309);
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CASE (horn, 0x031b); /* Normally is 0x31b; Greek Polytonic needs 0x313 (or 0x343).
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* We modified the compose sequences for now to
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* so that for Greek we don't apply algorithmic
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* when psili (0x343) is required
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* Patch accepted in Xorg/GIT, may take a bit to propagate.
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*/
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CASE (psili, 0x343);
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#undef CASE
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default:
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combination_buffer[i+1] = gdk_keyval_to_unicode (context_simple->compose_buffer[i]);
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}
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i--;
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}
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if (n_compose > 2)
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{
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gint n_combinations;
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gunichar temp_swap;
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/* We calculate the number of permutations of the diacritic marks, factorial(n_compose-1).
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* When diacritic marks belong to the same Canonical Combining Class,
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* a normalisation does not attempt reorder them, thus we do this ourselves.
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*/
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n_combinations = 1;
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for (k = 1; k < n_compose; k++ )
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n_combinations *= k;
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memcpy (combination_buffer_temp, combination_buffer, GTK_MAX_COMPOSE_LEN * sizeof (gunichar) );
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for (k = 0; k < n_combinations; k++ )
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{
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g_unicode_canonical_ordering (combination_buffer_temp, n_compose);
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combination_utf8_temp = g_ucs4_to_utf8 (combination_buffer_temp, -1, NULL, NULL, NULL);
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nfc_temp = g_utf8_normalize (combination_utf8_temp, -1, G_NORMALIZE_NFC);
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if (g_utf8_strlen (nfc_temp, -1) == 1)
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{
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memcpy (combination_buffer, combination_buffer_temp, GTK_MAX_COMPOSE_LEN * sizeof (gunichar) );
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break;
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}
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temp_swap = combination_buffer_temp[k % (n_compose - 1) + 1];
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combination_buffer_temp[k % (n_compose - 1) + 1] = combination_buffer_temp[(k+1) % (n_compose - 1) + 1];
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combination_buffer_temp[(k+1) % (n_compose - 1) + 1] = temp_swap;
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}
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g_free (combination_utf8_temp);
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g_free (nfc_temp);
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}
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combination_utf8 = g_ucs4_to_utf8 (combination_buffer, -1, NULL, NULL, NULL);
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nfc = g_utf8_normalize (combination_utf8, -1, G_NORMALIZE_NFC);
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if (g_utf8_strlen (nfc, -1) == 1)
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{
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gunichar value = g_utf8_get_char (nfc);
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gtk_im_context_simple_commit_char (GTK_IM_CONTEXT (context_simple), value);
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context_simple->compose_buffer[0] = 0;
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g_free (combination_utf8);
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g_free (nfc);
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return TRUE;
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}
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g_free (combination_utf8);
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g_free (nfc);
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}
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return FALSE;
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}
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/* In addition to the table-driven sequences, we allow Unicode hex
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* codes to be entered. The method chosen here is similar to the
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* one recommended in ISO 14755, but not exactly the same, since we
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* don't want to steal 16 valuable key combinations.
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*
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* A hex Unicode sequence must be started with Ctrl-Shift-U, followed
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* by a sequence of hex digits entered with Ctrl-Shift still held.
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* Releasing one of the modifiers or pressing space while the modifiers
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* are still held commits the character. It is possible to erase
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* digits using backspace.
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*
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* As an extension to the above, we also allow to start the sequence
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* with Ctrl-Shift-U, then release the modifiers before typing any
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* digits, and enter the digits without modifiers.
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*/
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#define HEX_MOD_MASK (GDK_CONTROL_MASK | GDK_SHIFT_MASK)
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static gboolean
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check_hex (GtkIMContextSimple *context_simple,
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gint n_compose)
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{
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/* See if this is a hex sequence, return TRUE if so */
|
|
gint i;
|
|
GString *str;
|
|
gulong n;
|
|
gchar *nptr = NULL;
|
|
gchar buf[7];
|
|
|
|
context_simple->tentative_match = 0;
|
|
context_simple->tentative_match_len = 0;
|
|
|
|
str = g_string_new (NULL);
|
|
|
|
i = 0;
|
|
while (i < n_compose)
|
|
{
|
|
gunichar ch;
|
|
|
|
ch = gdk_keyval_to_unicode (context_simple->compose_buffer[i]);
|
|
|
|
if (ch == 0)
|
|
return FALSE;
|
|
|
|
if (!g_unichar_isxdigit (ch))
|
|
return FALSE;
|
|
|
|
buf[g_unichar_to_utf8 (ch, buf)] = '\0';
|
|
|
|
g_string_append (str, buf);
|
|
|
|
++i;
|
|
}
|
|
|
|
n = strtoul (str->str, &nptr, 16);
|
|
|
|
/* if strtoul fails it probably means non-latin digits were used;
|
|
* we should in principle handle that, but we probably don't.
|
|
*/
|
|
if (nptr - str->str < str->len)
|
|
{
|
|
g_string_free (str, TRUE);
|
|
return FALSE;
|
|
}
|
|
else
|
|
g_string_free (str, TRUE);
|
|
|
|
if (g_unichar_validate (n))
|
|
{
|
|
context_simple->tentative_match = n;
|
|
context_simple->tentative_match_len = n_compose;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
beep_window (GdkWindow *window)
|
|
{
|
|
GtkWidget *widget;
|
|
|
|
gdk_window_get_user_data (window, (gpointer) &widget);
|
|
|
|
if (GTK_IS_WIDGET (widget))
|
|
{
|
|
gtk_widget_error_bell (widget);
|
|
}
|
|
else
|
|
{
|
|
GdkScreen *screen = gdk_drawable_get_screen (GDK_DRAWABLE (window));
|
|
gboolean beep;
|
|
|
|
g_object_get (gtk_settings_get_for_screen (screen),
|
|
"gtk-error-bell", &beep,
|
|
NULL);
|
|
|
|
if (beep)
|
|
gdk_window_beep (window);
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
no_sequence_matches (GtkIMContextSimple *context_simple,
|
|
gint n_compose,
|
|
GdkEventKey *event)
|
|
{
|
|
GtkIMContext *context;
|
|
gunichar ch;
|
|
|
|
context = GTK_IM_CONTEXT (context_simple);
|
|
|
|
/* No compose sequences found, check first if we have a partial
|
|
* match pending.
|
|
*/
|
|
if (context_simple->tentative_match)
|
|
{
|
|
gint len = context_simple->tentative_match_len;
|
|
int i;
|
|
|
|
gtk_im_context_simple_commit_char (context, context_simple->tentative_match);
|
|
context_simple->compose_buffer[0] = 0;
|
|
|
|
for (i=0; i < n_compose - len - 1; i++)
|
|
{
|
|
GdkEvent *tmp_event = gdk_event_copy ((GdkEvent *)event);
|
|
tmp_event->key.keyval = context_simple->compose_buffer[len + i];
|
|
|
|
gtk_im_context_filter_keypress (context, (GdkEventKey *)tmp_event);
|
|
gdk_event_free (tmp_event);
|
|
}
|
|
|
|
return gtk_im_context_filter_keypress (context, event);
|
|
}
|
|
else
|
|
{
|
|
context_simple->compose_buffer[0] = 0;
|
|
if (n_compose > 1) /* Invalid sequence */
|
|
{
|
|
beep_window (event->window);
|
|
return TRUE;
|
|
}
|
|
|
|
ch = gdk_keyval_to_unicode (event->keyval);
|
|
if (ch != 0)
|
|
{
|
|
gtk_im_context_simple_commit_char (context, ch);
|
|
return TRUE;
|
|
}
|
|
else
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
is_hex_keyval (guint keyval)
|
|
{
|
|
gunichar ch = gdk_keyval_to_unicode (keyval);
|
|
|
|
return g_unichar_isxdigit (ch);
|
|
}
|
|
|
|
static guint
|
|
canonical_hex_keyval (GdkEventKey *event)
|
|
{
|
|
GdkKeymap *keymap = gdk_keymap_get_for_display (gdk_drawable_get_display (event->window));
|
|
guint keyval;
|
|
guint *keyvals = NULL;
|
|
gint n_vals = 0;
|
|
gint i;
|
|
|
|
/* See if the keyval is already a hex digit */
|
|
if (is_hex_keyval (event->keyval))
|
|
return event->keyval;
|
|
|
|
/* See if this key would have generated a hex keyval in
|
|
* any other state, and return that hex keyval if so
|
|
*/
|
|
gdk_keymap_get_entries_for_keycode (keymap,
|
|
event->hardware_keycode,
|
|
NULL,
|
|
&keyvals, &n_vals);
|
|
|
|
keyval = 0;
|
|
i = 0;
|
|
while (i < n_vals)
|
|
{
|
|
if (is_hex_keyval (keyvals[i]))
|
|
{
|
|
keyval = keyvals[i];
|
|
break;
|
|
}
|
|
|
|
++i;
|
|
}
|
|
|
|
g_free (keyvals);
|
|
|
|
if (keyval)
|
|
return keyval;
|
|
else
|
|
/* No way to make it a hex digit
|
|
*/
|
|
return 0;
|
|
}
|
|
|
|
static gboolean
|
|
gtk_im_context_simple_filter_keypress (GtkIMContext *context,
|
|
GdkEventKey *event)
|
|
{
|
|
GtkIMContextSimple *context_simple = GTK_IM_CONTEXT_SIMPLE (context);
|
|
GSList *tmp_list;
|
|
int n_compose = 0;
|
|
gboolean have_hex_mods;
|
|
gboolean is_hex_start;
|
|
gboolean is_hex_end;
|
|
gboolean is_backspace;
|
|
gboolean is_escape;
|
|
guint hex_keyval;
|
|
int i;
|
|
|
|
while (context_simple->compose_buffer[n_compose] != 0)
|
|
n_compose++;
|
|
|
|
if (event->type == GDK_KEY_RELEASE)
|
|
{
|
|
if (context_simple->in_hex_sequence &&
|
|
(event->keyval == GDK_Control_L || event->keyval == GDK_Control_R ||
|
|
event->keyval == GDK_Shift_L || event->keyval == GDK_Shift_R))
|
|
{
|
|
if (context_simple->tentative_match &&
|
|
g_unichar_validate (context_simple->tentative_match))
|
|
{
|
|
gtk_im_context_simple_commit_char (context, context_simple->tentative_match);
|
|
context_simple->compose_buffer[0] = 0;
|
|
|
|
}
|
|
else if (n_compose == 0)
|
|
{
|
|
context_simple->modifiers_dropped = TRUE;
|
|
}
|
|
else
|
|
{
|
|
/* invalid hex sequence */
|
|
beep_window (event->window);
|
|
|
|
context_simple->tentative_match = 0;
|
|
context_simple->in_hex_sequence = FALSE;
|
|
context_simple->compose_buffer[0] = 0;
|
|
|
|
g_signal_emit_by_name (context_simple, "preedit_changed");
|
|
g_signal_emit_by_name (context_simple, "preedit_end");
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
else
|
|
return FALSE;
|
|
}
|
|
|
|
/* Ignore modifier key presses */
|
|
for (i = 0; i < G_N_ELEMENTS (gtk_compose_ignore); i++)
|
|
if (event->keyval == gtk_compose_ignore[i])
|
|
return FALSE;
|
|
|
|
if (context_simple->in_hex_sequence && context_simple->modifiers_dropped)
|
|
have_hex_mods = TRUE;
|
|
else
|
|
have_hex_mods = (event->state & (HEX_MOD_MASK)) == HEX_MOD_MASK;
|
|
is_hex_start = event->keyval == GDK_U;
|
|
is_hex_end = (event->keyval == GDK_space ||
|
|
event->keyval == GDK_KP_Space ||
|
|
event->keyval == GDK_Return ||
|
|
event->keyval == GDK_ISO_Enter ||
|
|
event->keyval == GDK_KP_Enter);
|
|
is_backspace = event->keyval == GDK_BackSpace;
|
|
is_escape = event->keyval == GDK_Escape;
|
|
hex_keyval = canonical_hex_keyval (event);
|
|
|
|
/* If we are already in a non-hex sequence, or
|
|
* this keystroke is not hex modifiers + hex digit, don't filter
|
|
* key events with accelerator modifiers held down.
|
|
*/
|
|
if (!have_hex_mods ||
|
|
(n_compose > 0 && !context_simple->in_hex_sequence) ||
|
|
(n_compose == 0 && !context_simple->in_hex_sequence && !is_hex_start) ||
|
|
(context_simple->in_hex_sequence && !hex_keyval &&
|
|
!is_hex_start && !is_hex_end && !is_escape && !is_backspace))
|
|
{
|
|
if (event->state & (gtk_accelerator_get_default_mod_mask () & ~GDK_SHIFT_MASK) ||
|
|
(context_simple->in_hex_sequence && context_simple->modifiers_dropped &&
|
|
(event->keyval == GDK_Return ||
|
|
event->keyval == GDK_ISO_Enter ||
|
|
event->keyval == GDK_KP_Enter)))
|
|
{
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
/* Handle backspace */
|
|
if (context_simple->in_hex_sequence && have_hex_mods && is_backspace)
|
|
{
|
|
if (n_compose > 0)
|
|
{
|
|
n_compose--;
|
|
context_simple->compose_buffer[n_compose] = 0;
|
|
check_hex (context_simple, n_compose);
|
|
}
|
|
else
|
|
{
|
|
context_simple->in_hex_sequence = FALSE;
|
|
}
|
|
|
|
g_signal_emit_by_name (context_simple, "preedit_changed");
|
|
|
|
if (!context_simple->in_hex_sequence)
|
|
g_signal_emit_by_name (context_simple, "preedit_end");
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* Check for hex sequence restart */
|
|
if (context_simple->in_hex_sequence && have_hex_mods && is_hex_start)
|
|
{
|
|
if (context_simple->tentative_match &&
|
|
g_unichar_validate (context_simple->tentative_match))
|
|
{
|
|
gtk_im_context_simple_commit_char (context, context_simple->tentative_match);
|
|
context_simple->compose_buffer[0] = 0;
|
|
}
|
|
else
|
|
{
|
|
/* invalid hex sequence */
|
|
if (n_compose > 0)
|
|
beep_window (event->window);
|
|
|
|
context_simple->tentative_match = 0;
|
|
context_simple->in_hex_sequence = FALSE;
|
|
context_simple->compose_buffer[0] = 0;
|
|
}
|
|
}
|
|
|
|
/* Check for hex sequence start */
|
|
if (!context_simple->in_hex_sequence && have_hex_mods && is_hex_start)
|
|
{
|
|
context_simple->compose_buffer[0] = 0;
|
|
context_simple->in_hex_sequence = TRUE;
|
|
context_simple->modifiers_dropped = FALSE;
|
|
context_simple->tentative_match = 0;
|
|
|
|
g_signal_emit_by_name (context_simple, "preedit_start");
|
|
g_signal_emit_by_name (context_simple, "preedit_changed");
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* Then, check for compose sequences */
|
|
if (context_simple->in_hex_sequence)
|
|
{
|
|
if (hex_keyval)
|
|
context_simple->compose_buffer[n_compose++] = hex_keyval;
|
|
else if (is_escape)
|
|
{
|
|
gtk_im_context_simple_reset (context);
|
|
|
|
return TRUE;
|
|
}
|
|
else if (!is_hex_end)
|
|
{
|
|
/* non-hex character in hex sequence */
|
|
beep_window (event->window);
|
|
|
|
return TRUE;
|
|
}
|
|
}
|
|
else
|
|
context_simple->compose_buffer[n_compose++] = event->keyval;
|
|
|
|
context_simple->compose_buffer[n_compose] = 0;
|
|
|
|
if (context_simple->in_hex_sequence)
|
|
{
|
|
/* If the modifiers are still held down, consider the sequence again */
|
|
if (have_hex_mods)
|
|
{
|
|
/* space or return ends the sequence, and we eat the key */
|
|
if (n_compose > 0 && is_hex_end)
|
|
{
|
|
if (context_simple->tentative_match &&
|
|
g_unichar_validate (context_simple->tentative_match))
|
|
{
|
|
gtk_im_context_simple_commit_char (context, context_simple->tentative_match);
|
|
context_simple->compose_buffer[0] = 0;
|
|
}
|
|
else
|
|
{
|
|
/* invalid hex sequence */
|
|
beep_window (event->window);
|
|
|
|
context_simple->tentative_match = 0;
|
|
context_simple->in_hex_sequence = FALSE;
|
|
context_simple->compose_buffer[0] = 0;
|
|
}
|
|
}
|
|
else if (!check_hex (context_simple, n_compose))
|
|
beep_window (event->window);
|
|
|
|
g_signal_emit_by_name (context_simple, "preedit_changed");
|
|
|
|
if (!context_simple->in_hex_sequence)
|
|
g_signal_emit_by_name (context_simple, "preedit_end");
|
|
|
|
return TRUE;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
tmp_list = context_simple->tables;
|
|
while (tmp_list)
|
|
{
|
|
if (check_table (context_simple, tmp_list->data, n_compose))
|
|
return TRUE;
|
|
tmp_list = tmp_list->next;
|
|
}
|
|
|
|
if (check_compact_table (context_simple, >k_compose_table_compact, n_compose))
|
|
return TRUE;
|
|
|
|
if (check_algorithmically (context_simple, n_compose))
|
|
return TRUE;
|
|
}
|
|
|
|
/* The current compose_buffer doesn't match anything */
|
|
return no_sequence_matches (context_simple, n_compose, event);
|
|
}
|
|
|
|
static void
|
|
gtk_im_context_simple_reset (GtkIMContext *context)
|
|
{
|
|
GtkIMContextSimple *context_simple = GTK_IM_CONTEXT_SIMPLE (context);
|
|
|
|
context_simple->compose_buffer[0] = 0;
|
|
|
|
if (context_simple->tentative_match || context_simple->in_hex_sequence)
|
|
{
|
|
context_simple->in_hex_sequence = FALSE;
|
|
context_simple->tentative_match = 0;
|
|
context_simple->tentative_match_len = 0;
|
|
g_signal_emit_by_name (context_simple, "preedit_changed");
|
|
g_signal_emit_by_name (context_simple, "preedit_end");
|
|
}
|
|
}
|
|
|
|
static void
|
|
gtk_im_context_simple_get_preedit_string (GtkIMContext *context,
|
|
gchar **str,
|
|
PangoAttrList **attrs,
|
|
gint *cursor_pos)
|
|
{
|
|
char outbuf[37]; /* up to 6 hex digits */
|
|
int len = 0;
|
|
|
|
GtkIMContextSimple *context_simple = GTK_IM_CONTEXT_SIMPLE (context);
|
|
|
|
if (context_simple->in_hex_sequence)
|
|
{
|
|
int hexchars = 0;
|
|
|
|
outbuf[0] = 'u';
|
|
len = 1;
|
|
|
|
while (context_simple->compose_buffer[hexchars] != 0)
|
|
{
|
|
len += g_unichar_to_utf8 (gdk_keyval_to_unicode (context_simple->compose_buffer[hexchars]),
|
|
outbuf + len);
|
|
++hexchars;
|
|
}
|
|
|
|
g_assert (len < 25);
|
|
}
|
|
else if (context_simple->tentative_match)
|
|
len = g_unichar_to_utf8 (context_simple->tentative_match, outbuf);
|
|
|
|
outbuf[len] = '\0';
|
|
|
|
if (str)
|
|
*str = g_strdup (outbuf);
|
|
|
|
if (attrs)
|
|
{
|
|
*attrs = pango_attr_list_new ();
|
|
|
|
if (len)
|
|
{
|
|
PangoAttribute *attr = pango_attr_underline_new (PANGO_UNDERLINE_SINGLE);
|
|
attr->start_index = 0;
|
|
attr->end_index = len;
|
|
pango_attr_list_insert (*attrs, attr);
|
|
}
|
|
}
|
|
|
|
if (cursor_pos)
|
|
*cursor_pos = len;
|
|
}
|
|
|
|
/**
|
|
* gtk_im_context_simple_add_table:
|
|
* @context_simple: A #GtkIMContextSimple
|
|
* @data: the table
|
|
* @max_seq_len: Maximum length of a sequence in the table
|
|
* (cannot be greater than #GTK_MAX_COMPOSE_LEN)
|
|
* @n_seqs: number of sequences in the table
|
|
*
|
|
* Adds an additional table to search to the input context.
|
|
* Each row of the table consists of @max_seq_len key symbols
|
|
* followed by two #guint16 interpreted as the high and low
|
|
* words of a #gunicode value. Tables are searched starting
|
|
* from the last added.
|
|
*
|
|
* The table must be sorted in dictionary order on the
|
|
* numeric value of the key symbol fields. (Values beyond
|
|
* the length of the sequence should be zero.)
|
|
**/
|
|
void
|
|
gtk_im_context_simple_add_table (GtkIMContextSimple *context_simple,
|
|
guint16 *data,
|
|
gint max_seq_len,
|
|
gint n_seqs)
|
|
{
|
|
GtkComposeTable *table;
|
|
|
|
g_return_if_fail (GTK_IS_IM_CONTEXT_SIMPLE (context_simple));
|
|
g_return_if_fail (data != NULL);
|
|
g_return_if_fail (max_seq_len <= GTK_MAX_COMPOSE_LEN);
|
|
|
|
table = g_new (GtkComposeTable, 1);
|
|
table->data = data;
|
|
table->max_seq_len = max_seq_len;
|
|
table->n_seqs = n_seqs;
|
|
|
|
context_simple->tables = g_slist_prepend (context_simple->tables, table);
|
|
}
|
|
|
|
#define __GTK_IM_CONTEXT_SIMPLE_C__
|
|
#include "gtkaliasdef.c"
|