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fcitximcontext.c
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fcitximcontext.c
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/***************************************************************************
* Copyright (C) 2010~2012 by CSSlayer *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program 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 General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. *
***************************************************************************/
/**
* @file fcitximcontext.c
*
* This is a gtk im module for fcitx, using DBus as a protocol.
* This is compromise to gtk and firefox, users are being sucked by them
* again and again.
*/
#include "config.h"
#include <gdk/gdkkeysyms.h>
#include <gtk/gtk.h>
#include <stdlib.h>
#include <string.h>
#include <xkbcommon/xkbcommon-compose.h>
#ifdef GDK_WINDOWING_WAYLAND
#include <gdk/gdkwayland.h>
#endif
#include <gdk/gdkx.h>
#include "fcitx-utils/log.h"
#include "fcitx/fcitx.h"
#include "fcitx/frontend.h"
#include "fcitx-gclient/fcitxclient.h"
#include "fcitx-gclient/fcitxconnection.h"
#include "fcitximcontext.h"
#if !GTK_CHECK_VERSION(2, 91, 0)
#define DEPRECATED_GDK_KEYSYMS 1
#endif
#if GTK_CHECK_VERSION(2, 24, 0)
#define NEW_GDK_WINDOW_GET_DISPLAY
#endif
#if GTK_CHECK_VERSION(3, 6, 0)
static const FcitxCapacityFlags purpose_related_capacity =
CAPACITY_ALPHA | CAPACITY_DIGIT | CAPACITY_NUMBER | CAPACITY_DIALABLE |
CAPACITY_URL | CAPACITY_EMAIL | CAPACITY_PASSWORD;
static const FcitxCapacityFlags hints_related_capacity =
CAPACITY_SPELLCHECK | CAPACITY_NO_SPELLCHECK | CAPACITY_WORD_COMPLETION |
CAPACITY_LOWERCASE | CAPACITY_UPPERCASE | CAPACITY_UPPERCASE_WORDS |
CAPACITY_UPPERCASE_SENTENCES | CAPACITY_NO_ON_SCREEN_KEYBOARD;
#endif
struct _FcitxIMContext {
GtkIMContext parent;
GdkWindow *client_window;
GdkRectangle area;
FcitxClient *client;
GtkIMContext *slave;
int has_focus;
guint32 time;
gboolean use_preedit;
gboolean support_surrounding_text;
gboolean is_inpreedit;
gboolean is_wayland;
gchar *preedit_string;
gchar *surrounding_text;
int cursor_pos;
FcitxCapacityFlags capacity_from_toolkit;
FcitxCapacityFlags last_updated_capacity;
PangoAttrList *attrlist;
gint last_cursor_pos;
gint last_anchor_pos;
struct xkb_compose_state *xkbComposeState;
GdkEvent *gdk_event;
};
struct _FcitxIMContextClass {
GtkIMContextClass parent;
/* klass members */
};
/* functions prototype */
static void fcitx_im_context_class_init(FcitxIMContextClass *klass);
static void fcitx_im_context_class_fini(FcitxIMContextClass *klass);
static void fcitx_im_context_init(FcitxIMContext *im_context);
static void fcitx_im_context_finalize(GObject *obj);
static void fcitx_im_context_set_client_window(GtkIMContext *context,
GdkWindow *client_window);
static gboolean fcitx_im_context_filter_keypress(GtkIMContext *context,
GdkEventKey *key);
static void fcitx_im_context_reset(GtkIMContext *context);
static void fcitx_im_context_focus_in(GtkIMContext *context);
static void fcitx_im_context_focus_out(GtkIMContext *context);
static void fcitx_im_context_set_cursor_location(GtkIMContext *context,
GdkRectangle *area);
static void fcitx_im_context_set_use_preedit(GtkIMContext *context,
gboolean use_preedit);
static void fcitx_im_context_set_surrounding(GtkIMContext *context,
const gchar *text, gint len,
gint cursor_index);
static void fcitx_im_context_get_preedit_string(GtkIMContext *context,
gchar **str,
PangoAttrList **attrs,
gint *cursor_pos);
static gboolean _set_cursor_location_internal(FcitxIMContext *fcitxcontext);
static gboolean
_request_surrounding_text_after_focus(FcitxIMContext *fcitxcontext);
static void _slave_commit_cb(GtkIMContext *slave, gchar *string,
FcitxIMContext *context);
static void _slave_preedit_changed_cb(GtkIMContext *slave,
FcitxIMContext *context);
static void _slave_preedit_start_cb(GtkIMContext *slave,
FcitxIMContext *context);
static void _slave_preedit_end_cb(GtkIMContext *slave, FcitxIMContext *context);
static gboolean _slave_retrieve_surrounding_cb(GtkIMContext *slave,
FcitxIMContext *context);
static gboolean _slave_delete_surrounding_cb(GtkIMContext *slave,
gint offset_from_cursor,
guint nchars,
FcitxIMContext *context);
static void _fcitx_im_context_enable_im_cb(FcitxClient *client,
void *user_data);
static void _fcitx_im_context_close_im_cb(FcitxClient *client, void *user_data);
static void _fcitx_im_context_commit_string_cb(FcitxClient *client, char *str,
void *user_data);
static void _fcitx_im_context_forward_key_cb(FcitxClient *client, guint keyval,
guint state, gint type,
void *user_data);
static void
_fcitx_im_context_delete_surrounding_text_cb(FcitxClient *client,
gint offset_from_cursor,
guint nchars, void *user_data);
static void _fcitx_im_context_connect_cb(FcitxClient *client, void *user_data);
static void _fcitx_im_context_update_formatted_preedit_cb(FcitxClient *im,
GPtrArray *array,
int cursor_pos,
void *user_data);
static void _fcitx_im_context_process_key_cb(GObject *source_object,
GAsyncResult *res,
gpointer user_data);
static void _fcitx_im_context_set_capacity(FcitxIMContext *fcitxcontext,
gboolean force);
#if GTK_CHECK_VERSION(3, 6, 0)
static void _fcitx_im_context_input_hints_changed_cb(GObject *gobject,
GParamSpec *pspec,
gpointer user_data);
static void _fcitx_im_context_input_purpose_changed_cb(GObject *gobject,
GParamSpec *pspec,
gpointer user_data);
#endif
static GdkEventKey *_create_gdk_event(FcitxIMContext *fcitxcontext,
guint keyval, guint state,
FcitxKeyEventType type);
static gboolean _key_is_modifier(guint keyval);
static void _request_surrounding_text(FcitxIMContext **context);
static gint _key_snooper_cb(GtkWidget *widget, GdkEventKey *event,
gpointer user_data);
static GType _fcitx_type_im_context = 0;
static GtkIMContextClass *parent_class = NULL;
static guint _signal_commit_id = 0;
static guint _signal_preedit_changed_id = 0;
static guint _signal_preedit_start_id = 0;
static guint _signal_preedit_end_id = 0;
static guint _signal_delete_surrounding_id = 0;
static guint _signal_retrieve_surrounding_id = 0;
static gboolean _use_sync_mode = 0;
static GtkIMContext *_focus_im_context = NULL;
static const gchar *_no_snooper_apps = NO_SNOOPER_APPS;
static gboolean _use_key_snooper = _ENABLE_SNOOPER;
static guint _key_snooper_id = 0;
static FcitxConnection *_connection = NULL;
static struct xkb_context *xkbContext = NULL;
static struct xkb_compose_table *xkbComposeTable = NULL;
/* Copied from gtk+2.0-2.20.1/modules/input/imcedilla.c to fix
* crosbug.com/11421.
* Overwrite the original Gtk+'s compose table in
* gtk+-2.x.y/gtk/gtkimcontextsimple.c. */
/* The difference between this and the default input method is the handling
* of C+acute - this method produces C WITH CEDILLA rather than C WITH ACUTE.
* For languages that use CCedilla and not acute, this is the preferred mapping,
* and is particularly important for pt_BR, where the us-intl keyboard is
* used extensively.
*/
static guint16 cedilla_compose_seqs[] = {
#ifdef DEPRECATED_GDK_KEYSYMS
GDK_dead_acute,
GDK_C,
0,
0,
0,
0x00C7, /* LATIN_CAPITAL_LETTER_C_WITH_CEDILLA */
GDK_dead_acute,
GDK_c,
0,
0,
0,
0x00E7, /* LATIN_SMALL_LETTER_C_WITH_CEDILLA */
GDK_Multi_key,
GDK_apostrophe,
GDK_C,
0,
0,
0x00C7, /* LATIN_CAPITAL_LETTER_C_WITH_CEDILLA */
GDK_Multi_key,
GDK_apostrophe,
GDK_c,
0,
0,
0x00E7, /* LATIN_SMALL_LETTER_C_WITH_CEDILLA */
GDK_Multi_key,
GDK_C,
GDK_apostrophe,
0,
0,
0x00C7, /* LATIN_CAPITAL_LETTER_C_WITH_CEDILLA */
GDK_Multi_key,
GDK_c,
GDK_apostrophe,
0,
0,
0x00E7, /* LATIN_SMALL_LETTER_C_WITH_CEDILLA */
#else
GDK_KEY_dead_acute,
GDK_KEY_C,
0,
0,
0,
0x00C7, /* LATIN_CAPITAL_LETTER_C_WITH_CEDILLA */
GDK_KEY_dead_acute,
GDK_KEY_c,
0,
0,
0,
0x00E7, /* LATIN_SMALL_LETTER_C_WITH_CEDILLA */
GDK_KEY_Multi_key,
GDK_KEY_apostrophe,
GDK_KEY_C,
0,
0,
0x00C7, /* LATIN_CAPITAL_LETTER_C_WITH_CEDILLA */
GDK_KEY_Multi_key,
GDK_KEY_apostrophe,
GDK_KEY_c,
0,
0,
0x00E7, /* LATIN_SMALL_LETTER_C_WITH_CEDILLA */
GDK_KEY_Multi_key,
GDK_KEY_C,
GDK_KEY_apostrophe,
0,
0,
0x00C7, /* LATIN_CAPITAL_LETTER_C_WITH_CEDILLA */
GDK_KEY_Multi_key,
GDK_KEY_c,
GDK_KEY_apostrophe,
0,
0,
0x00E7, /* LATIN_SMALL_LETTER_C_WITH_CEDILLA */
#endif
};
void fcitx_im_context_register_type(GTypeModule *type_module) {
static const GTypeInfo fcitx_im_context_info = {
sizeof(FcitxIMContextClass),
(GBaseInitFunc)NULL,
(GBaseFinalizeFunc)NULL,
(GClassInitFunc)fcitx_im_context_class_init,
(GClassFinalizeFunc)fcitx_im_context_class_fini,
NULL, /* klass data */
sizeof(FcitxIMContext),
0,
(GInstanceInitFunc)fcitx_im_context_init,
0};
if (!_fcitx_type_im_context) {
if (type_module) {
_fcitx_type_im_context = g_type_module_register_type(
type_module, GTK_TYPE_IM_CONTEXT, "FcitxIMContext",
&fcitx_im_context_info, (GTypeFlags)0);
} else {
_fcitx_type_im_context =
g_type_register_static(GTK_TYPE_IM_CONTEXT, "FcitxIMContext",
&fcitx_im_context_info, (GTypeFlags)0);
}
}
}
GType fcitx_im_context_get_type(void) {
if (_fcitx_type_im_context == 0) {
fcitx_im_context_register_type(NULL);
}
g_assert(_fcitx_type_im_context != 0);
return _fcitx_type_im_context;
}
FcitxIMContext *fcitx_im_context_new(void) {
GObject *obj = g_object_new(FCITX_TYPE_IM_CONTEXT, NULL);
return FCITX_IM_CONTEXT(obj);
}
///
static void fcitx_im_context_class_init(FcitxIMContextClass *klass) {
GtkIMContextClass *im_context_class = GTK_IM_CONTEXT_CLASS(klass);
GObjectClass *gobject_class = G_OBJECT_CLASS(klass);
parent_class = (GtkIMContextClass *)g_type_class_peek_parent(klass);
im_context_class->set_client_window = fcitx_im_context_set_client_window;
im_context_class->filter_keypress = fcitx_im_context_filter_keypress;
im_context_class->reset = fcitx_im_context_reset;
im_context_class->get_preedit_string = fcitx_im_context_get_preedit_string;
im_context_class->focus_in = fcitx_im_context_focus_in;
im_context_class->focus_out = fcitx_im_context_focus_out;
im_context_class->set_cursor_location =
fcitx_im_context_set_cursor_location;
im_context_class->set_use_preedit = fcitx_im_context_set_use_preedit;
im_context_class->set_surrounding = fcitx_im_context_set_surrounding;
gobject_class->finalize = fcitx_im_context_finalize;
_signal_commit_id = g_signal_lookup("commit", G_TYPE_FROM_CLASS(klass));
g_assert(_signal_commit_id != 0);
_signal_preedit_changed_id =
g_signal_lookup("preedit-changed", G_TYPE_FROM_CLASS(klass));
g_assert(_signal_preedit_changed_id != 0);
_signal_preedit_start_id =
g_signal_lookup("preedit-start", G_TYPE_FROM_CLASS(klass));
g_assert(_signal_preedit_start_id != 0);
_signal_preedit_end_id =
g_signal_lookup("preedit-end", G_TYPE_FROM_CLASS(klass));
g_assert(_signal_preedit_end_id != 0);
_signal_delete_surrounding_id =
g_signal_lookup("delete-surrounding", G_TYPE_FROM_CLASS(klass));
g_assert(_signal_delete_surrounding_id != 0);
_signal_retrieve_surrounding_id =
g_signal_lookup("retrieve-surrounding", G_TYPE_FROM_CLASS(klass));
g_assert(_signal_retrieve_surrounding_id != 0);
_use_key_snooper = !fcitx_utils_get_boolean_env("IBUS_DISABLE_SNOOPER",
!(_ENABLE_SNOOPER)) &&
!fcitx_utils_get_boolean_env("FCITX_DISABLE_SNOOPER",
!(_ENABLE_SNOOPER));
/* env IBUS_DISABLE_SNOOPER does not exist */
if (_use_key_snooper) {
/* disable snooper if app is in _no_snooper_apps */
const gchar *prgname = g_get_prgname();
if (g_getenv("IBUS_NO_SNOOPER_APPS")) {
_no_snooper_apps = g_getenv("IBUS_NO_SNOOPER_APPS");
}
if (g_getenv("FCITX_NO_SNOOPER_APPS")) {
_no_snooper_apps = g_getenv("FCITX_NO_SNOOPER_APPS");
}
gchar **p;
gchar **apps = g_strsplit(_no_snooper_apps, ",", 0);
for (p = apps; *p != NULL; p++) {
if (g_regex_match_simple(*p, prgname, 0, 0)) {
_use_key_snooper = FALSE;
break;
}
}
g_strfreev(apps);
}
/* make ibus fix benefits us */
_use_sync_mode =
fcitx_utils_get_boolean_env("IBUS_ENABLE_SYNC_MODE", FALSE) ||
fcitx_utils_get_boolean_env("FCITX_ENABLE_SYNC_MODE", FALSE);
/* always install snooper */
if (_key_snooper_id == 0)
_key_snooper_id = gtk_key_snooper_install(_key_snooper_cb, NULL);
}
static void fcitx_im_context_class_fini(FcitxIMContextClass *klass) {
FCITX_UNUSED(klass);
if (_key_snooper_id != 0) {
gtk_key_snooper_remove(_key_snooper_id);
_key_snooper_id = 0;
}
}
static void fcitx_im_context_init(FcitxIMContext *context) {
FcitxLog(DEBUG, "fcitx_im_context_init");
context->client = NULL;
context->area.x = -1;
context->area.y = -1;
context->area.width = 0;
context->area.height = 0;
context->use_preedit = TRUE;
context->cursor_pos = 0;
context->last_anchor_pos = -1;
context->last_cursor_pos = -1;
context->preedit_string = NULL;
context->attrlist = NULL;
context->last_updated_capacity = CAPACITY_SURROUNDING_TEXT;
#ifdef GDK_WINDOWING_WAYLAND
if (GDK_IS_WAYLAND_DISPLAY(gdk_display_get_default())) {
context->is_wayland = TRUE;
}
#endif
context->slave = gtk_im_context_simple_new();
gtk_im_context_simple_add_table(
GTK_IM_CONTEXT_SIMPLE(context->slave), cedilla_compose_seqs, 4,
G_N_ELEMENTS(cedilla_compose_seqs) / (4 + 2));
g_signal_connect(context->slave, "commit", G_CALLBACK(_slave_commit_cb),
context);
g_signal_connect(context->slave, "preedit-start",
G_CALLBACK(_slave_preedit_start_cb), context);
g_signal_connect(context->slave, "preedit-end",
G_CALLBACK(_slave_preedit_end_cb), context);
g_signal_connect(context->slave, "preedit-changed",
G_CALLBACK(_slave_preedit_changed_cb), context);
g_signal_connect(context->slave, "retrieve-surrounding",
G_CALLBACK(_slave_retrieve_surrounding_cb), context);
g_signal_connect(context->slave, "delete-surrounding",
G_CALLBACK(_slave_delete_surrounding_cb), context);
#if GTK_CHECK_VERSION(3, 6, 0)
g_signal_connect(context, "notify::input-hints",
G_CALLBACK(_fcitx_im_context_input_hints_changed_cb),
NULL);
g_signal_connect(context, "notify::input-purpose",
G_CALLBACK(_fcitx_im_context_input_purpose_changed_cb),
NULL);
#endif
context->time = GDK_CURRENT_TIME;
static gsize has_info = 0;
if (g_once_init_enter(&has_info)) {
_connection = fcitx_connection_new();
g_object_ref_sink(_connection);
xkbContext = xkb_context_new(XKB_CONTEXT_NO_FLAGS);
if (xkbContext) {
xkb_context_set_log_level(xkbContext, XKB_LOG_LEVEL_CRITICAL);
}
const char *locale = getenv("LC_ALL");
if (!locale)
locale = getenv("LC_CTYPE");
if (!locale)
locale = getenv("LANG");
if (!locale)
locale = "C";
xkbComposeTable =
xkbContext ? xkb_compose_table_new_from_locale(
xkbContext, locale, XKB_COMPOSE_COMPILE_NO_FLAGS)
: NULL;
g_once_init_leave(&has_info, 1);
}
context->client = fcitx_client_new_with_connection(_connection);
if (context->is_wayland) {
fcitx_client_set_display(context->client, "wayland:");
} else {
#if GTK_CHECK_VERSION(3, 0, 0)
if (GDK_IS_X11_DISPLAY(gdk_display_get_default())) {
#endif
fcitx_client_set_display(context->client, "x11:");
#if GTK_CHECK_VERSION(3, 0, 0)
}
#endif
}
g_signal_connect(context->client, "connected",
G_CALLBACK(_fcitx_im_context_connect_cb), context);
g_signal_connect(context->client, "enable-im",
G_CALLBACK(_fcitx_im_context_enable_im_cb), context);
g_signal_connect(context->client, "close-im",
G_CALLBACK(_fcitx_im_context_close_im_cb), context);
g_signal_connect(context->client, "forward-key",
G_CALLBACK(_fcitx_im_context_forward_key_cb), context);
g_signal_connect(context->client, "commit-string",
G_CALLBACK(_fcitx_im_context_commit_string_cb), context);
g_signal_connect(context->client, "delete-surrounding-text",
G_CALLBACK(_fcitx_im_context_delete_surrounding_text_cb),
context);
g_signal_connect(context->client, "update-formatted-preedit",
G_CALLBACK(_fcitx_im_context_update_formatted_preedit_cb),
context);
context->xkbComposeState =
xkbComposeTable
? xkb_compose_state_new(xkbComposeTable, XKB_COMPOSE_STATE_NO_FLAGS)
: NULL;
}
static void fcitx_im_context_finalize(GObject *obj) {
FcitxLog(DEBUG, "fcitx_im_context_finalize");
FcitxIMContext *context = FCITX_IM_CONTEXT(obj);
fcitx_im_context_set_client_window(GTK_IM_CONTEXT(context), NULL);
#ifndef g_signal_handlers_disconnect_by_data
#define g_signal_handlers_disconnect_by_data(instance, data) \
g_signal_handlers_disconnect_matched((instance), G_SIGNAL_MATCH_DATA, 0, \
0, NULL, NULL, (data))
#endif
g_clear_pointer(&context->xkbComposeState, xkb_compose_state_unref);
if (context->client) {
g_signal_handlers_disconnect_by_data(context->client, context);
}
g_clear_object(&context->client);
if (context->slave) {
g_signal_handlers_disconnect_by_data(context->slave, context);
}
g_clear_object(&context->slave);
g_clear_pointer(&context->preedit_string, g_free);
g_clear_pointer(&context->surrounding_text, g_free);
g_clear_pointer(&context->attrlist, pango_attr_list_unref);
g_clear_pointer(&context->gdk_event, gdk_event_free);
G_OBJECT_CLASS(parent_class)->finalize(obj);
}
static void set_ic_client_window(FcitxIMContext *context,
GdkWindow *client_window) {
if (!client_window)
return;
if (context->client_window) {
g_object_unref(context->client_window);
context->client_window = NULL;
}
if (client_window != NULL)
context->client_window = g_object_ref(client_window);
if (context->slave)
gtk_im_context_set_client_window(context->slave, client_window);
}
///
static void fcitx_im_context_set_client_window(GtkIMContext *context,
GdkWindow *client_window) {
FcitxLog(DEBUG, "fcitx_im_context_set_client_window");
FcitxIMContext *fcitxcontext = FCITX_IM_CONTEXT(context);
set_ic_client_window(fcitxcontext, client_window);
}
static gboolean
fcitx_im_context_filter_keypress_fallback(FcitxIMContext *context,
GdkEventKey *event) {
if (!context->xkbComposeState || event->type == GDK_KEY_RELEASE) {
return gtk_im_context_filter_keypress(context->slave, event);
;
}
struct xkb_compose_state *xkbComposeState = context->xkbComposeState;
enum xkb_compose_feed_result result =
xkb_compose_state_feed(xkbComposeState, event->keyval);
if (result == XKB_COMPOSE_FEED_IGNORED) {
return gtk_im_context_filter_keypress(context->slave, event);
}
enum xkb_compose_status status =
xkb_compose_state_get_status(xkbComposeState);
if (status == XKB_COMPOSE_NOTHING) {
return gtk_im_context_filter_keypress(context->slave, event);
} else if (status == XKB_COMPOSE_COMPOSED) {
char buffer[] = {'\0', '\0', '\0', '\0', '\0', '\0', '\0'};
int length =
xkb_compose_state_get_utf8(xkbComposeState, buffer, sizeof(buffer));
xkb_compose_state_reset(xkbComposeState);
if (length != 0) {
g_signal_emit(context, _signal_commit_id, 0, buffer);
}
} else if (status == XKB_COMPOSE_CANCELLED) {
xkb_compose_state_reset(xkbComposeState);
}
return TRUE;
}
///
static gboolean fcitx_im_context_filter_keypress(GtkIMContext *context,
GdkEventKey *event) {
FcitxLog(DEBUG, "fcitx_im_context_filter_keypress");
FcitxIMContext *fcitxcontext = FCITX_IM_CONTEXT(context);
/* check this first, since we use key snooper, most key will be handled. */
if (fcitx_client_is_valid(fcitxcontext->client)) {
/* XXX it is a workaround for some applications do not set client
* window. */
if (fcitxcontext->client_window == NULL && event->window != NULL) {
gtk_im_context_set_client_window((GtkIMContext *)fcitxcontext,
event->window);
/* set_cursor_location_internal() will get origin from X server,
* it blocks UI. So delay it to idle callback. */
gdk_threads_add_idle_full(
G_PRIORITY_DEFAULT_IDLE,
(GSourceFunc)_set_cursor_location_internal,
g_object_ref(fcitxcontext), (GDestroyNotify)g_object_unref);
}
}
if (G_UNLIKELY(event->state & FcitxKeyState_HandledMask))
return TRUE;
if (G_UNLIKELY(event->state & FcitxKeyState_IgnoredMask))
return fcitx_im_context_filter_keypress_fallback(fcitxcontext, event);
if (fcitx_client_is_valid(fcitxcontext->client) &&
fcitxcontext->has_focus) {
_request_surrounding_text(&fcitxcontext);
if (G_UNLIKELY(!fcitxcontext))
return FALSE;
fcitxcontext->time = event->time;
// Keep a copy of latest event.
g_clear_pointer(&fcitxcontext->gdk_event, gdk_event_free);
fcitxcontext->gdk_event = gdk_event_copy((GdkEvent *)event);
if (_use_sync_mode) {
int ret = fcitx_client_process_key_sync(
fcitxcontext->client, event->keyval, event->hardware_keycode,
event->state,
(event->type == GDK_KEY_PRESS) ? (FCITX_PRESS_KEY)
: (FCITX_RELEASE_KEY),
event->time);
if (ret <= 0) {
event->state |= FcitxKeyState_IgnoredMask;
return fcitx_im_context_filter_keypress_fallback(fcitxcontext,
event);
} else {
event->state |= FcitxKeyState_HandledMask;
return TRUE;
}
} else {
fcitx_client_process_key(
fcitxcontext->client, event->keyval, event->hardware_keycode,
event->state,
(event->type == GDK_KEY_PRESS) ? (FCITX_PRESS_KEY)
: (FCITX_RELEASE_KEY),
event->time, -1, NULL, _fcitx_im_context_process_key_cb,
gdk_event_copy((GdkEvent *)event));
event->state |= FcitxKeyState_HandledMask;
return TRUE;
}
} else {
return fcitx_im_context_filter_keypress_fallback(fcitxcontext, event);
}
return FALSE;
}
static void _fcitx_im_context_process_key_cb(GObject *source_object,
GAsyncResult *res,
gpointer user_data) {
GdkEventKey *event = user_data;
int ret = fcitx_client_process_key_finish(FCITX_CLIENT(source_object), res);
if (ret <= 0) {
event->state |= FcitxKeyState_IgnoredMask;
gdk_event_put((GdkEvent *)event);
}
gdk_event_free((GdkEvent *)event);
}
static void _fcitx_im_context_update_formatted_preedit_cb(FcitxClient *im,
GPtrArray *array,
int cursor_pos,
void *user_data) {
FCITX_UNUSED(im);
FcitxLog(DEBUG, "_fcitx_im_context_commit_string_cb");
FcitxIMContext *context = FCITX_IM_CONTEXT(user_data);
gboolean visible = false;
if (cursor_pos < 0) {
cursor_pos = 0;
}
if (context->preedit_string != NULL) {
if (strlen(context->preedit_string) != 0)
visible = true;
g_free(context->preedit_string);
context->preedit_string = NULL;
}
if (context->attrlist != NULL) {
pango_attr_list_unref(context->attrlist);
}
context->attrlist = pango_attr_list_new();
GString *gstr = g_string_new(NULL);
unsigned int i = 0;
for (i = 0; i < array->len; i++) {
size_t bytelen = strlen(gstr->str);
FcitxPreeditItem *preedit = g_ptr_array_index(array, i);
const gchar *s = preedit->string;
gint type = preedit->type;
PangoAttribute *pango_attr = NULL;
if ((type & MSG_NOUNDERLINE) == 0) {
pango_attr = pango_attr_underline_new(PANGO_UNDERLINE_SINGLE);
pango_attr->start_index = bytelen;
pango_attr->end_index = bytelen + strlen(s);
pango_attr_list_insert(context->attrlist, pango_attr);
}
if (type & MSG_HIGHLIGHT) {
gboolean hasColor = false;
GdkColor fg;
GdkColor bg;
memset(&fg, 0, sizeof(GdkColor));
memset(&bg, 0, sizeof(GdkColor));
if (context->client_window) {
GtkWidget *widget;
gdk_window_get_user_data(context->client_window,
(gpointer *)&widget);
// black list window, otherwise firefox may gives you strange
// color.
if (GTK_IS_WIDGET(widget) && !GTK_IS_WINDOW(widget)) {
hasColor = true;
#if GTK_CHECK_VERSION(3, 0, 0)
GtkStyleContext *styleContext =
gtk_widget_get_style_context(widget);
GdkRGBA fg_rgba, bg_rgba;
hasColor =
gtk_style_context_lookup_color(
styleContext, "theme_selected_bg_color",
&bg_rgba) &&
gtk_style_context_lookup_color(
styleContext, "theme_selected_fg_color", &fg_rgba);
if (hasColor) {
fg.pixel = 0;
fg.red = CLAMP((gint)(fg_rgba.red * 65535), 0, 65535);
fg.green =
CLAMP((gint)(fg_rgba.green * 65535), 0, 65535);
fg.blue = CLAMP((gint)(fg_rgba.blue * 65535), 0, 65535);
bg.pixel = 0;
bg.red = CLAMP((gint)(bg_rgba.red * 65535), 0, 65535);
bg.green =
CLAMP((gint)(bg_rgba.green * 65535), 0, 65535);
bg.blue = CLAMP((gint)(bg_rgba.blue * 65535), 0, 65535);
}
#else
GtkStyle *style = gtk_widget_get_style(widget);
fg = style->text[GTK_STATE_SELECTED];
bg = style->base[GTK_STATE_SELECTED];
#endif
}
}
if (!hasColor) {
fg.red = 0xffff;
fg.green = 0xffff;
fg.blue = 0xffff;
bg.red = 0x43ff;
bg.green = 0xacff;
bg.blue = 0xe8ff;
}
pango_attr = pango_attr_foreground_new(fg.red, fg.green, fg.blue);
pango_attr->start_index = bytelen;
pango_attr->end_index = bytelen + strlen(s);
pango_attr_list_insert(context->attrlist, pango_attr);
pango_attr = pango_attr_background_new(bg.red, bg.green, bg.blue);
pango_attr->start_index = bytelen;
pango_attr->end_index = bytelen + strlen(s);
pango_attr_list_insert(context->attrlist, pango_attr);
}
gstr = g_string_append(gstr, s);
}
gchar *str = g_string_free(gstr, FALSE);
context->preedit_string = str;
char *tempstr = g_strndup(str, cursor_pos);
context->cursor_pos = fcitx_utf8_strlen(tempstr);
g_free(tempstr);
gboolean new_visible = FALSE;
if (context->preedit_string != NULL && context->preedit_string[0] == 0) {
g_free(context->preedit_string);
context->preedit_string = NULL;
}
if (context->preedit_string != NULL)
new_visible = TRUE;
gboolean flag = new_visible != visible;
if (new_visible) {
if (flag) {
/* invisible => visible */
g_signal_emit(context, _signal_preedit_start_id, 0);
}
g_signal_emit(context, _signal_preedit_changed_id, 0);
} else {
if (flag) {
/* visible => invisible */
g_signal_emit(context, _signal_preedit_changed_id, 0);
g_signal_emit(context, _signal_preedit_end_id, 0);
} else {
/* still invisible */
/* do nothing */
}
}
}
///
static void fcitx_im_context_focus_in(GtkIMContext *context) {
FcitxLog(DEBUG, "fcitx_im_context_focus_in");
FcitxIMContext *fcitxcontext = FCITX_IM_CONTEXT(context);
if (fcitxcontext->has_focus)
return;
_fcitx_im_context_set_capacity(fcitxcontext, FALSE);
fcitxcontext->has_focus = true;
/*
* Do not call gtk_im_context_focus_out() here.
* This might workaround some chrome issue
*/
#if 0
if (_focus_im_context != NULL) {
g_assert (_focus_im_context != context);
gtk_im_context_focus_out (_focus_im_context);
g_assert (_focus_im_context == NULL);
}
#endif
if (fcitx_client_is_valid(fcitxcontext->client)) {
fcitx_client_focus_in(fcitxcontext->client);
}
gtk_im_context_focus_in(fcitxcontext->slave);
/* set_cursor_location_internal() will get origin from X server,
* it blocks UI. So delay it to idle callback. */
gdk_threads_add_idle_full(
G_PRIORITY_DEFAULT_IDLE, (GSourceFunc)_set_cursor_location_internal,
g_object_ref(fcitxcontext), (GDestroyNotify)g_object_unref);
/* _request_surrounding_text may trigger freeze in Libreoffice. After
* focus in, the request is not as urgent as key event. Delay it to main
* idle callback. */
gdk_threads_add_idle_full(
G_PRIORITY_DEFAULT_IDLE,
(GSourceFunc)_request_surrounding_text_after_focus,
g_object_ref(fcitxcontext), (GDestroyNotify)g_object_unref);
if (G_UNLIKELY(!fcitxcontext))
return;
g_object_add_weak_pointer((GObject *)context,
(gpointer *)&_focus_im_context);
_focus_im_context = context;
return;
}
static void fcitx_im_context_focus_out(GtkIMContext *context) {
FcitxLog(DEBUG, "fcitx_im_context_focus_out");
FcitxIMContext *fcitxcontext = FCITX_IM_CONTEXT(context);
if (!fcitxcontext->has_focus) {
return;
}
#if 0
g_assert (context == _focus_im_context);
#endif
g_object_remove_weak_pointer((GObject *)context,
(gpointer *)&_focus_im_context);
_focus_im_context = NULL;
fcitxcontext->has_focus = false;
if (fcitx_client_is_valid(fcitxcontext->client)) {
fcitx_client_focus_out(fcitxcontext->client);
}
fcitxcontext->cursor_pos = 0;
if (fcitxcontext->preedit_string != NULL) {
g_free(fcitxcontext->preedit_string);
fcitxcontext->preedit_string = NULL;
g_signal_emit(fcitxcontext, _signal_preedit_changed_id, 0);
g_signal_emit(fcitxcontext, _signal_preedit_end_id, 0);
}
gtk_im_context_focus_out(fcitxcontext->slave);
return;
}
///
static void fcitx_im_context_set_cursor_location(GtkIMContext *context,
GdkRectangle *area) {
FcitxLog(DEBUG, "fcitx_im_context_set_cursor_location %d %d %d %d", area->x,
area->y, area->height, area->width);
FcitxIMContext *fcitxcontext = FCITX_IM_CONTEXT(context);
if (fcitxcontext->area.x == area->x && fcitxcontext->area.y == area->y &&
fcitxcontext->area.width == area->width &&
fcitxcontext->area.height == area->height) {
return;
}
fcitxcontext->area = *area;
if (fcitx_client_is_valid(fcitxcontext->client)) {
_set_cursor_location_internal(fcitxcontext);
}
gtk_im_context_set_cursor_location(fcitxcontext->slave, area);
return;
}
static gboolean _set_cursor_location_internal(FcitxIMContext *fcitxcontext) {
GdkRectangle area;
if (fcitxcontext->client_window == NULL ||
!fcitx_client_is_valid(fcitxcontext->client)) {
return FALSE;
}
area = fcitxcontext->area;
#ifdef GDK_WINDOWING_WAYLAND
if (GDK_IS_WAYLAND_DISPLAY(gdk_display_get_default())) {
gdouble px, py;
GdkWindow *parent;
GdkWindow *window = fcitxcontext->client_window;
while ((parent = gdk_window_get_effective_parent(window)) != NULL) {
gdk_window_coords_to_parent(window, area.x, area.y, &px, &py);
area.x = px;
area.y = py;
window = parent;
}
} else
#endif
{
if (area.x == -1 && area.y == -1 && area.width == 0 &&
area.height == 0) {
#if GTK_CHECK_VERSION(2, 91, 0)
area.x = 0;
area.y += gdk_window_get_height(fcitxcontext->client_window);
#else
gint w, h;
gdk_drawable_get_size(fcitxcontext->client_window, &w, &h);
area.y += h;
area.x = 0;
#endif
}
#if GTK_CHECK_VERSION(2, 18, 0)
gdk_window_get_root_coords(fcitxcontext->client_window, area.x, area.y,