/* Finish composing, provide the character, and clear our compose buffer.
*/
static void
accept_character (GtkImContextMultipress *multipress_context, const gchar *characters)
{
/* Clear the compose buffer, so we are ready to compose the next character.
* Note that if we emit "preedit-changed" after "commit", there's a segfault/
* invalid-write with GtkTextView in gtk_text_layout_free_line_display(), when
* destroying a PangoLayout (this can also be avoided by not using any Pango
* attributes in get_preedit_string(). */
clear_compose_buffer (multipress_context);
/* Provide the character to GTK+ */
g_signal_emit_by_name (multipress_context, "commit", characters);
}
static gboolean
tamil99_filter_keypress (GtkIMContext *context,
GdkEventKey *event)
{
ComposeSequence *comp_seq;
gint i;
if (event->type == GDK_KEY_RELEASE)
return FALSE;
/* don't filter key events with accelerator modifiers held down */
if (event->state
& (gtk_accelerator_get_default_mod_mask () & ~GDK_SHIFT_MASK))
return FALSE;
for (i = 0; i < G_N_ELEMENTS (tamil99_compose_ignore); i++)
if (event->keyval == tamil99_compose_ignore[i])
return FALSE;
/* '|' commits what we have */
if (event->keyval == GDK_bar && n_compose > 0)
{
comp_seq = find_complete_compose_sequence (compose_buffer);
if (comp_seq != NULL)
{
g_signal_emit_by_name (context, "commit", comp_seq->string);
clear_compose_buffer ();
}
g_signal_emit_by_name (context, "preedit-changed");
return TRUE;
}
compose_buffer[n_compose] = event->keyval;
n_compose++;
if (find_incomplete_compose_sequence (compose_buffer) != NULL)
{
g_signal_emit_by_name (context, "preedit-changed");
return TRUE;
}
comp_seq = find_complete_compose_sequence (compose_buffer);
if (comp_seq != NULL)
{
g_signal_emit_by_name (context, "commit", comp_seq->string);
clear_compose_buffer ();
g_signal_emit_by_name (context, "preedit-changed");
return TRUE;
}
/* if we reach this point, the sequence *with the key just pressed*
* cannot be a complete or incomplete match, so: commit the old sequence,
* then reprocess this key */
n_compose--;
compose_buffer[n_compose] = 0;
if (n_compose > 0)
{
comp_seq = find_complete_compose_sequence (compose_buffer);
g_signal_emit_by_name (context, "commit", comp_seq->string);
clear_compose_buffer ();
g_signal_emit_by_name (context, "preedit-changed");
return tamil99_filter_keypress (context, event);
}
return no_sequence_matches (context, event);
}
static void
tamil99_reset (GtkIMContext *context)
{
clear_compose_buffer ();
g_signal_emit_by_name (context, "preedit-changed");
}
static void
vfunc_reset (GtkIMContext *context)
{
clear_compose_buffer (GTK_IM_CONTEXT_MULTIPRESS (context));
}