/* 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 "locale.h" #include #include "gtk/gtkintl.h" #include "gtk/gtklabel.h" #include "gtk/gtksignal.h" #include "gtk/gtkwindow.h" #include "gtkimcontextxim.h" typedef struct _StatusWindow StatusWindow; struct _GtkXIMInfo { GdkDisplay *display; XIM im; char *locale; XIMStyle preedit_style_setting; XIMStyle status_style_setting; XIMStyle style; GtkSettings *settings; gulong status_set; gulong preedit_set; XIMStyles *xim_styles; }; /* A context status window; these are kept in the status_windows list. */ struct _StatusWindow { GtkWidget *window; /* Toplevel window to which the status window corresponds */ GtkWidget *toplevel; /* Signal connection ids; we connect to the toplevel */ gulong destroy_handler_id; gulong configure_handler_id; }; static void gtk_im_context_xim_class_init (GtkIMContextXIMClass *class); static void gtk_im_context_xim_init (GtkIMContextXIM *im_context_xim); static void gtk_im_context_xim_finalize (GObject *obj); static void gtk_im_context_xim_set_client_window (GtkIMContext *context, GdkWindow *client_window); static gboolean gtk_im_context_xim_filter_keypress (GtkIMContext *context, GdkEventKey *key); static void gtk_im_context_xim_reset (GtkIMContext *context); static void gtk_im_context_xim_focus_in (GtkIMContext *context); static void gtk_im_context_xim_focus_out (GtkIMContext *context); static void gtk_im_context_xim_set_cursor_location (GtkIMContext *context, GdkRectangle *area); static void gtk_im_context_xim_set_use_preedit (GtkIMContext *context, gboolean use_preedit); static void gtk_im_context_xim_get_preedit_string (GtkIMContext *context, gchar **str, PangoAttrList **attrs, gint *cursor_pos); static void reinitialize_ic (GtkIMContextXIM *context_xim); static void setup_styles (GtkXIMInfo *info); static void status_window_show (GtkIMContextXIM *context_xim); static void status_window_hide (GtkIMContextXIM *context_xim); static void status_window_set_text (GtkIMContextXIM *context_xim, const gchar *text); static XIC gtk_im_context_xim_get_ic (GtkIMContextXIM *context_xim); static GObjectClass *parent_class; GType gtk_type_im_context_xim = 0; GSList *open_ims = NULL; /* List of status windows for different toplevels */ static GSList *status_windows = NULL; void gtk_im_context_xim_register_type (GTypeModule *type_module) { static const GTypeInfo im_context_xim_info = { sizeof (GtkIMContextXIMClass), (GBaseInitFunc) NULL, (GBaseFinalizeFunc) NULL, (GClassInitFunc) gtk_im_context_xim_class_init, NULL, /* class_finalize */ NULL, /* class_data */ sizeof (GtkIMContextXIM), 0, (GInstanceInitFunc) gtk_im_context_xim_init, }; gtk_type_im_context_xim = g_type_module_register_type (type_module, GTK_TYPE_IM_CONTEXT, "GtkIMContextXIM", &im_context_xim_info, 0); } #define PREEDIT_MASK (XIMPreeditCallbacks | XIMPreeditPosition | \ XIMPreeditArea | XIMPreeditNothing | XIMPreeditNone) #define STATUS_MASK (XIMStatusCallbacks | XIMStatusArea | \ XIMStatusNothing | XIMStatusNone) #define ALLOWED_MASK (XIMPreeditCallbacks | XIMPreeditNothing | XIMPreeditNone | \ XIMStatusCallbacks | XIMStatusNothing | XIMStatusNone) static XIMStyle choose_better_style (XIMStyle style1, XIMStyle style2) { XIMStyle s1, s2, u; if (style1 == 0) return style2; if (style2 == 0) return style1; if ((style1 & (PREEDIT_MASK | STATUS_MASK)) == (style2 & (PREEDIT_MASK | STATUS_MASK))) return style1; s1 = style1 & PREEDIT_MASK; s2 = style2 & PREEDIT_MASK; u = s1 | s2; if (s1 != s2) { if (u & XIMPreeditCallbacks) return (s1 == XIMPreeditCallbacks) ? style1 : style2; else if (u & XIMPreeditPosition) return (s1 == XIMPreeditPosition) ? style1 :style2; else if (u & XIMPreeditArea) return (s1 == XIMPreeditArea) ? style1 : style2; else if (u & XIMPreeditNothing) return (s1 == XIMPreeditNothing) ? style1 : style2; } else { s1 = style1 & STATUS_MASK; s2 = style2 & STATUS_MASK; u = s1 | s2; if (u & XIMStatusCallbacks) return (s1 == XIMStatusCallbacks) ? style1 : style2; else if (u & XIMStatusArea) return (s1 == XIMStatusArea) ? style1 : style2; else if (u & XIMStatusNothing) return (s1 == XIMStatusNothing) ? style1 : style2; else if (u & XIMStatusNone) return (s1 == XIMStatusNone) ? style1 : style2; } return 0; /* Get rid of stupid warning */ } static void status_style_change (GtkXIMInfo *info) { GtkIMStatusStyle status_style; g_object_get (info->settings, "gtk-im-status-style", &status_style, NULL); if (status_style == GTK_IM_STATUS_CALLBACK) info->status_style_setting = XIMStatusCallbacks; else if (status_style == GTK_IM_STATUS_NOTHING) info->status_style_setting = XIMStatusNothing; else return; setup_styles (info); } static void preedit_style_change (GtkXIMInfo *info) { GtkIMPreeditStyle preedit_style; g_object_get (info->settings, "gtk-im-preedit-style", &preedit_style, NULL); if (preedit_style == GTK_IM_PREEDIT_CALLBACK) info->preedit_style_setting = XIMPreeditCallbacks; else if (preedit_style == GTK_IM_PREEDIT_NOTHING) info->preedit_style_setting = XIMPreeditNothing; else return; setup_styles (info); } static void status_style_change_notify (GtkIMContextXIM *context_xim) { GtkXIMInfo *info = context_xim->im_info; status_style_change (info); reinitialize_ic (context_xim); } static void preedit_style_change_notify (GtkIMContextXIM *context_xim) { GtkXIMInfo *info = context_xim->im_info; preedit_style_change (info); reinitialize_ic (context_xim); } static void setup_styles (GtkXIMInfo *info) { int i; unsigned long settings_preference; XIMStyles *xim_styles = info->xim_styles; settings_preference = info->status_style_setting|info->preedit_style_setting; if (xim_styles) { for (i = 0; i < xim_styles->count_styles; i++) if ((xim_styles->supported_styles[i] & ALLOWED_MASK) == xim_styles->supported_styles[i]) { if (settings_preference == xim_styles->supported_styles[i]) { info->style = settings_preference; break; } info->style = choose_better_style (info->style, xim_styles->supported_styles[i]); } } } static void setup_im (GtkXIMInfo *info, GdkWindow *window) { XIMValuesList *ic_values = NULL; int i; GdkScreen *screen = gdk_drawable_get_screen (window); XGetIMValues (info->im, XNQueryInputStyle, &info->xim_styles, XNQueryICValuesList, &ic_values, NULL); info->settings = gtk_settings_get_for_screen (screen); if (!g_object_class_find_property (G_OBJECT_GET_CLASS (info->settings), "gtk-im-preedit-style")) gtk_settings_install_property (g_param_spec_enum ("gtk-im-preedit-style", _("IM Preedit style"), _("How to draw the input method preedit string"), GTK_TYPE_IM_PREEDIT_STYLE, GTK_IM_PREEDIT_CALLBACK, G_PARAM_READWRITE)); if (!g_object_class_find_property (G_OBJECT_GET_CLASS (info->settings), "gtk-im-status-style")) gtk_settings_install_property (g_param_spec_enum ("gtk-im-status-style", _("IM Status style"), _("How to draw the input method statusbar"), GTK_TYPE_IM_STATUS_STYLE, GTK_IM_STATUS_CALLBACK, G_PARAM_READWRITE)); status_style_change (info); preedit_style_change (info); #if 0 if (ic_values) { for (i = 0; i < ic_values->count_values; i++) g_print ("%s\n", ic_values->supported_values[i]); for (i = 0; i < xim_styles->count_styles; i++) g_print ("%#x\n", xim_styles->supported_styles[i]); } #endif if (ic_values) XFree (ic_values); } static GtkXIMInfo * get_im (GdkWindow *client_window, const char *locale) { GSList *tmp_list; GtkXIMInfo *info; XIM im = NULL; GdkDisplay *display = gdk_drawable_get_display (client_window); tmp_list = open_ims; while (tmp_list) { info = tmp_list->data; if (info->display == display && strcmp (info->locale, locale) == 0) return info; tmp_list = tmp_list->next; } info = NULL; if (XSupportsLocale ()) { if (!XSetLocaleModifiers ("")) g_warning ("Unable to set locale modifiers with XSetLocaleModifiers()"); im = XOpenIM (GDK_DISPLAY_XDISPLAY (display), NULL, NULL, NULL); if (!im) g_warning ("Unable to open XIM input method, falling back to XLookupString()"); if (im) { info = g_new (GtkXIMInfo, 1); open_ims = g_slist_prepend (open_ims, info); info->display = display; info->locale = g_strdup (locale); info->im = im; info->xim_styles = NULL; info->preedit_style_setting = 0; info->status_style_setting = 0; info->settings = 0; info->preedit_set = 0; info->status_set = 0; setup_im (info, client_window); } } return info; } static void gtk_im_context_xim_class_init (GtkIMContextXIMClass *class) { GtkIMContextClass *im_context_class = GTK_IM_CONTEXT_CLASS (class); GObjectClass *gobject_class = G_OBJECT_CLASS (class); parent_class = g_type_class_peek_parent (class); im_context_class->set_client_window = gtk_im_context_xim_set_client_window; im_context_class->filter_keypress = gtk_im_context_xim_filter_keypress; im_context_class->reset = gtk_im_context_xim_reset; im_context_class->get_preedit_string = gtk_im_context_xim_get_preedit_string; im_context_class->focus_in = gtk_im_context_xim_focus_in; im_context_class->focus_out = gtk_im_context_xim_focus_out; im_context_class->set_cursor_location = gtk_im_context_xim_set_cursor_location; im_context_class->set_use_preedit = gtk_im_context_xim_set_use_preedit; gobject_class->finalize = gtk_im_context_xim_finalize; } static void gtk_im_context_xim_init (GtkIMContextXIM *im_context_xim) { im_context_xim->use_preedit = TRUE; im_context_xim->filter_key_release = FALSE; } static void gtk_im_context_xim_finalize (GObject *obj) { GtkIMContextXIM *context_xim = GTK_IM_CONTEXT_XIM (obj); if (context_xim->ic) { XDestroyIC (context_xim->ic); context_xim->ic = NULL; } if (context_xim->im_info) { GtkXIMInfo *info = context_xim->im_info; XFree (info->xim_styles->supported_styles); XFree (info->xim_styles); g_free (info->locale); g_signal_handler_disconnect (info->settings, info->status_set); g_signal_handler_disconnect (info->settings, info->preedit_set); XCloseIM (info->im); } g_free (context_xim->locale); g_free (context_xim->mb_charset); } static void reinitialize_ic (GtkIMContextXIM *context_xim) { if (context_xim->ic) { XDestroyIC (context_xim->ic); context_xim->ic = NULL; if (context_xim->preedit_length) { context_xim->preedit_length = 0; g_signal_emit_by_name (context_xim, "preedit_changed"); } } } static void gtk_im_context_xim_set_client_window (GtkIMContext *context, GdkWindow *client_window) { GtkIMContextXIM *context_xim = GTK_IM_CONTEXT_XIM (context); reinitialize_ic (context_xim); context_xim->client_window = client_window; if (context_xim->client_window) context_xim->im_info = get_im (context_xim->client_window, context_xim->locale); else context_xim->im_info = NULL; } GtkIMContext * gtk_im_context_xim_new (void) { GtkIMContextXIM *result; const gchar *charset; result = GTK_IM_CONTEXT_XIM (g_object_new (GTK_TYPE_IM_CONTEXT_XIM, NULL)); result->locale = g_strdup (setlocale (LC_CTYPE, NULL)); g_get_charset (&charset); result->mb_charset = g_strdup (charset); return GTK_IM_CONTEXT (result); } static char * mb_to_utf8 (GtkIMContextXIM *context_xim, const char *str) { GError *error = NULL; gchar *result; if (strcmp (context_xim->mb_charset, "UTF-8") == 0) result = g_strdup (str); else { result = g_convert (str, -1, "UTF-8", context_xim->mb_charset, NULL, NULL, &error); if (!result) { g_warning ("Error converting text from IM to UTF-8: %s\n", error->message); g_error_free (error); } } return result; } static gboolean gtk_im_context_xim_filter_keypress (GtkIMContext *context, GdkEventKey *event) { GtkIMContextXIM *context_xim = GTK_IM_CONTEXT_XIM (context); XIC ic = gtk_im_context_xim_get_ic (context_xim); gchar static_buffer[256]; gchar *buffer = static_buffer; gint buffer_size = sizeof(static_buffer) - 1; gint num_bytes = 0; KeySym keysym; Status status; gboolean result = FALSE; GdkWindow *root_window = gdk_screen_get_root_window (gdk_drawable_get_screen (event->window)); XKeyPressedEvent xevent; if (event->type == GDK_KEY_RELEASE && !context_xim->filter_key_release) return FALSE; xevent.type = (event->type == GDK_KEY_PRESS) ? KeyPress : KeyRelease; xevent.serial = 0; /* hope it doesn't matter */ xevent.send_event = event->send_event; xevent.display = GDK_DRAWABLE_XDISPLAY (event->window); xevent.window = GDK_DRAWABLE_XID (event->window); xevent.root = GDK_DRAWABLE_XID (root_window); xevent.subwindow = xevent.window; xevent.time = event->time; xevent.x = xevent.x_root = 0; xevent.y = xevent.y_root = 0; xevent.state = event->state; xevent.keycode = event->hardware_keycode; xevent.same_screen = True; if (XFilterEvent ((XEvent *)&xevent, GDK_DRAWABLE_XID (context_xim->client_window))) return TRUE; again: if (ic) num_bytes = XmbLookupString (ic, &xevent, buffer, buffer_size, &keysym, &status); else { num_bytes = XLookupString (&xevent, buffer, buffer_size, &keysym, NULL); status = XLookupBoth; } if (status == XBufferOverflow) { buffer_size = num_bytes; buffer = g_malloc (num_bytes + 1); goto again; } /* I don't know how we should properly handle XLookupKeysym or XLookupBoth * here ... do input methods actually change the keysym? we can't really * feed it back to accelerator processing at this point... */ if (status == XLookupChars || status == XLookupBoth) { char *result_utf8; buffer[num_bytes] = '\0'; result_utf8 = mb_to_utf8 (context_xim, buffer); if (result_utf8) { if ((guchar)result_utf8[0] >= 0x20 && result_utf8[0] != 0x7f) /* Some IM have a nasty habit of converting * control characters into strings */ { g_signal_emit_by_name (context, "commit", result_utf8); result = TRUE; } g_free (result_utf8); } } return result; } static void gtk_im_context_xim_focus_in (GtkIMContext *context) { GtkIMContextXIM *context_xim = GTK_IM_CONTEXT_XIM (context); XIC ic = gtk_im_context_xim_get_ic (context_xim); if (!ic) return; XSetICFocus (ic); status_window_show (context_xim); return; } static void gtk_im_context_xim_focus_out (GtkIMContext *context) { GtkIMContextXIM *context_xim = GTK_IM_CONTEXT_XIM (context); XIC ic = gtk_im_context_xim_get_ic (context_xim); if (!ic) return; XUnsetICFocus (ic); status_window_hide (context_xim); return; } static void gtk_im_context_xim_set_cursor_location (GtkIMContext *context, GdkRectangle *area) { GtkIMContextXIM *context_xim = GTK_IM_CONTEXT_XIM (context); XIC ic = gtk_im_context_xim_get_ic (context_xim); XVaNestedList preedit_attr; XPoint spot; if (!ic) return; spot.x = area->x; spot.y = area->y; preedit_attr = XVaCreateNestedList (0, XNSpotLocation, &spot, 0); XSetICValues (ic, XNPreeditAttributes, preedit_attr, NULL); XFree(preedit_attr); return; } static void gtk_im_context_xim_set_use_preedit (GtkIMContext *context, gboolean use_preedit) { GtkIMContextXIM *context_xim = GTK_IM_CONTEXT_XIM (context); use_preedit = use_preedit != FALSE; if (context_xim->use_preedit != use_preedit) { context_xim->use_preedit = use_preedit; reinitialize_ic (context_xim); } return; } static void gtk_im_context_xim_reset (GtkIMContext *context) { GtkIMContextXIM *context_xim = GTK_IM_CONTEXT_XIM (context); XIC ic = gtk_im_context_xim_get_ic (context_xim); gchar *result; /* restore conversion state after resetting ic later */ XIMPreeditState preedit_state = XIMPreeditUnKnown; XVaNestedList preedit_attr; gboolean have_preedit_state = FALSE; if (!ic) return; if (context_xim->preedit_length == 0) return; preedit_attr = XVaCreateNestedList(0, XNPreeditState, &preedit_state, 0); if (!XGetICValues(ic, XNPreeditAttributes, preedit_attr, NULL)) have_preedit_state = TRUE; XFree(preedit_attr); result = XmbResetIC (ic); preedit_attr = XVaCreateNestedList(0, XNPreeditState, preedit_state, 0); if (have_preedit_state) XSetICValues(ic, XNPreeditAttributes, preedit_attr, NULL); XFree(preedit_attr); if (result) { char *result_utf8 = mb_to_utf8 (context_xim, result); if (result_utf8) { g_signal_emit_by_name (context, "commit", result_utf8); g_free (result_utf8); } } if (context_xim->preedit_length) { context_xim->preedit_length = 0; g_signal_emit_by_name (context, "preedit_changed"); } XFree (result); } /* Mask of feedback bits that we render */ #define FEEDBACK_MASK (XIMReverse | XIMUnderline) static void add_feedback_attr (PangoAttrList *attrs, const gchar *str, XIMFeedback feedback, gint start_pos, gint end_pos) { PangoAttribute *attr; gint start_index = g_utf8_offset_to_pointer (str, start_pos) - str; gint end_index = g_utf8_offset_to_pointer (str, end_pos) - str; if (feedback & XIMUnderline) { attr = pango_attr_underline_new (PANGO_UNDERLINE_SINGLE); attr->start_index = start_index; attr->end_index = end_index; pango_attr_list_change (attrs, attr); } if (feedback & XIMReverse) { attr = pango_attr_foreground_new (0xffff, 0xffff, 0xffff); attr->start_index = start_index; attr->end_index = end_index; pango_attr_list_change (attrs, attr); attr = pango_attr_background_new (0, 0, 0); attr->start_index = start_index; attr->end_index = end_index; pango_attr_list_change (attrs, attr); } if (feedback & ~FEEDBACK_MASK) g_warning ("Unrendered feedback style: %#lx", feedback & ~FEEDBACK_MASK); } static void gtk_im_context_xim_get_preedit_string (GtkIMContext *context, gchar **str, PangoAttrList **attrs, gint *cursor_pos) { GtkIMContextXIM *context_xim = GTK_IM_CONTEXT_XIM (context); gchar *utf8 = g_ucs4_to_utf8 (context_xim->preedit_chars, context_xim->preedit_length, NULL, NULL, NULL); if (attrs) { int i; XIMFeedback last_feedback = 0; gint start = -1; *attrs = pango_attr_list_new (); for (i = 0; i < context_xim->preedit_length; i++) { XIMFeedback new_feedback = context_xim->feedbacks[i] & FEEDBACK_MASK; if (new_feedback != last_feedback) { if (start >= 0) add_feedback_attr (*attrs, utf8, last_feedback, start, i); last_feedback = new_feedback; start = i; } } if (start >= 0) add_feedback_attr (*attrs, utf8, last_feedback, start, i); } if (str) *str = utf8; else g_free (utf8); if (cursor_pos) *cursor_pos = context_xim->preedit_cursor; } static void preedit_start_callback (XIC xic, XPointer client_data, XPointer call_data) { GtkIMContext *context = GTK_IM_CONTEXT (client_data); g_signal_emit_by_name (context, "preedit_start"); } static void preedit_done_callback (XIC xic, XPointer client_data, XPointer call_data) { GtkIMContext *context = GTK_IM_CONTEXT (client_data); g_signal_emit_by_name (context, "preedit_end"); } static gint xim_text_to_utf8 (GtkIMContextXIM *context, XIMText *xim_text, gchar **text) { gint text_length = 0; GError *error = NULL; gchar *result = NULL; if (xim_text && xim_text->string.multi_byte) { if (xim_text->encoding_is_wchar) { g_warning ("Wide character return from Xlib not currently supported"); *text = NULL; return 0; } if (strcmp (context->mb_charset, "UTF-8") == 0) result = g_strdup (xim_text->string.multi_byte); else result = g_convert (xim_text->string.multi_byte, -1, "UTF-8", context->mb_charset, NULL, NULL, &error); if (result) { text_length = g_utf8_strlen (result, -1); if (text_length != xim_text->length) { g_warning ("Size mismatch when converting text from input method: supplied length = %d\n, result length = %d", xim_text->length, text_length); } } else { g_warning ("Error converting text from IM to UCS-4: %s", error->message); g_error_free (error); *text = NULL; return 0; } *text = result; return text_length; } else { *text = NULL; return 0; } } static void preedit_draw_callback (XIC xic, XPointer client_data, XIMPreeditDrawCallbackStruct *call_data) { GtkIMContextXIM *context = GTK_IM_CONTEXT_XIM (client_data); XIMText *new_xim_text = call_data->text; gint new_text_length; gunichar *new_text = NULL; gint i; gint diff; gint new_length; gchar *tmp; gint chg_first = CLAMP (call_data->chg_first, 0, context->preedit_length); gint chg_length = CLAMP (call_data->chg_length, 0, context->preedit_length - chg_first); context->preedit_cursor = call_data->caret; if (chg_first != call_data->chg_first || chg_length != call_data->chg_length) g_warning ("Invalid change to preedit string, first=%d length=%d (orig length == %d)", call_data->chg_first, call_data->chg_length, context->preedit_length); new_text_length = xim_text_to_utf8 (context, new_xim_text, &tmp); if (tmp) { new_text = g_utf8_to_ucs4_fast (tmp, -1, NULL); g_free (tmp); } diff = new_text_length - chg_length; new_length = context->preedit_length + diff; if (new_length > context->preedit_size) { context->preedit_size = new_length; context->preedit_chars = g_renew (gunichar, context->preedit_chars, new_length); context->feedbacks = g_renew (XIMFeedback, context->feedbacks, new_length); } if (diff < 0) { for (i = chg_first + chg_length ; i < context->preedit_length; i++) { context->preedit_chars[i + diff] = context->preedit_chars[i]; context->feedbacks[i + diff] = context->feedbacks[i]; } } else { for (i = context->preedit_length - 1; i >= chg_first + chg_length ; i--) { context->preedit_chars[i + diff] = context->preedit_chars[i]; context->feedbacks[i + diff] = context->feedbacks[i]; } } for (i = 0; i < new_text_length; i++) { context->preedit_chars[chg_first + i] = new_text[i]; context->feedbacks[chg_first + i] = new_xim_text->feedback[i]; } context->preedit_length += diff; if (new_text) g_free (new_text); g_signal_emit_by_name (context, "preedit_changed"); } static void preedit_caret_callback (XIC xic, XPointer client_data, XIMPreeditCaretCallbackStruct *call_data) { GtkIMContextXIM *context = GTK_IM_CONTEXT_XIM (client_data); if (call_data->direction == XIMAbsolutePosition) { context->preedit_cursor = call_data->position; g_signal_emit_by_name (context, "preedit_changed"); } else { g_warning ("Caret movement command: %d %d %d not supported", call_data->position, call_data->direction, call_data->style); } } static void status_start_callback (XIC xic, XPointer client_data, XPointer call_data) { return; } static void status_done_callback (XIC xic, XPointer client_data, XPointer call_data) { return; } static void status_draw_callback (XIC xic, XPointer client_data, XIMStatusDrawCallbackStruct *call_data) { GtkIMContextXIM *context = GTK_IM_CONTEXT_XIM (client_data); if (call_data->type == XIMTextType) { gchar *text; xim_text_to_utf8 (context, call_data->data.text, &text); if (text) status_window_set_text (context, text); else status_window_set_text (context, ""); } else /* bitmap */ { g_print ("Status drawn with bitmap - id = %#lx\n", call_data->data.bitmap); } } static XVaNestedList set_preedit_callback (GtkIMContextXIM *context_xim) { context_xim->preedit_start_callback.client_data = (XPointer)context_xim; context_xim->preedit_start_callback.callback = (XIMProc)preedit_start_callback; context_xim->preedit_done_callback.client_data = (XPointer)context_xim; context_xim->preedit_done_callback.callback = (XIMProc)preedit_done_callback; context_xim->preedit_draw_callback.client_data = (XPointer)context_xim; context_xim->preedit_draw_callback.callback = (XIMProc)preedit_draw_callback; context_xim->preedit_caret_callback.client_data = (XPointer)context_xim; context_xim->preedit_caret_callback.callback = (XIMProc)preedit_caret_callback; return XVaCreateNestedList (0, XNPreeditStartCallback, &context_xim->preedit_start_callback, XNPreeditDoneCallback, &context_xim->preedit_done_callback, XNPreeditDrawCallback, &context_xim->preedit_draw_callback, XNPreeditCaretCallback, &context_xim->preedit_caret_callback, NULL); } static XVaNestedList set_status_callback (GtkIMContextXIM *context_xim) { context_xim->status_start_callback.client_data = (XPointer)context_xim; context_xim->status_start_callback.callback = (XIMProc)status_start_callback; context_xim->status_done_callback.client_data = (XPointer)context_xim; context_xim->status_done_callback.callback = (XIMProc)status_done_callback; context_xim->status_draw_callback.client_data = (XPointer)context_xim; context_xim->status_draw_callback.callback = (XIMProc)status_draw_callback; return XVaCreateNestedList (0, XNStatusStartCallback, &context_xim->status_start_callback, XNStatusDoneCallback, &context_xim->status_done_callback, XNStatusDrawCallback, &context_xim->status_draw_callback, NULL); } static XIC get_ic_real (GtkIMContextXIM *context_xim) { XIC xic = 0; const char *name1 = NULL; XVaNestedList list1 = NULL; const char *name2 = NULL; XVaNestedList list2 = NULL; XIMStyle im_style = 0; if (context_xim->use_preedit && (context_xim->im_info->style & PREEDIT_MASK) == XIMPreeditCallbacks) { im_style |= XIMPreeditCallbacks; name1 = XNPreeditAttributes; list1 = set_preedit_callback (context_xim); } else im_style |= XIMPreeditNothing; if ((context_xim->im_info->style & STATUS_MASK) == XIMStatusCallbacks) { im_style |= XIMStatusCallbacks; if (name1 == NULL) { name1 = XNStatusAttributes; list1 = set_status_callback (context_xim); } else { name2 = XNStatusAttributes; list2 = set_status_callback (context_xim); } } else im_style |= XIMStatusNothing; xic = XCreateIC (context_xim->im_info->im, XNInputStyle, im_style, XNClientWindow, GDK_DRAWABLE_XID (context_xim->client_window), name1, list1, name2, list2, NULL); if (list1) XFree (list1); if (list2) XFree (list2); if (xic) { /* Don't filter key released events with XFilterEvents unless * input methods ask for. This is a workaround for Solaris input * method bug in C and European locales. It doubles each key * stroke if both key pressed and released events are filtered. * (bugzilla #81759) */ gulong mask = 0; XGetICValues (xic, XNFilterEvents, &mask, NULL); context_xim->filter_key_release = (mask & KeyReleaseMask); } return xic; } static XIC gtk_im_context_xim_get_ic (GtkIMContextXIM *context_xim) { if (!context_xim->ic && context_xim->im_info) { context_xim->ic = get_ic_real (context_xim); /* * connect property-notify signal handlers to respond runtime * changes of status_style and preedit_style in the settings */ if (context_xim->im_info->settings) { GtkXIMInfo *info = context_xim->im_info; if (info->status_set) g_signal_handler_disconnect (info->settings, info->status_set); if (info->preedit_set) g_signal_handler_disconnect (info->settings, info->preedit_set); info->status_set = g_signal_connect_swapped (info->settings, "notify::gtk-im-status-style", G_CALLBACK (status_style_change_notify), context_xim); info->preedit_set = g_signal_connect_swapped (info->settings, "notify::gtk-im-preedit-style", G_CALLBACK (preedit_style_change_notify), context_xim); } } return context_xim->ic; } /************************** * * * Status Window handling * * * **************************/ static gboolean status_window_expose_event (GtkWidget *widget, GdkEventExpose *event) { gdk_draw_rectangle (widget->window, widget->style->base_gc [GTK_STATE_NORMAL], TRUE, 0, 0, widget->allocation.width, widget->allocation.height); gdk_draw_rectangle (widget->window, widget->style->text_gc [GTK_STATE_NORMAL], FALSE, 0, 0, widget->allocation.width - 1, widget->allocation.height - 1); return FALSE; } static void status_window_style_set (GtkWidget *toplevel, GtkStyle *previous_style, GtkWidget *label) { gint i; for (i = 0; i < 5; i++) gtk_widget_modify_fg (label, i, &toplevel->style->text[i]); } /* Frees a status window and removes its link from the status_windows list */ static void status_window_free (StatusWindow *status_window) { status_windows = g_slist_remove (status_windows, status_window); g_signal_handler_disconnect (status_window->toplevel, status_window->destroy_handler_id); g_signal_handler_disconnect (status_window->toplevel, status_window->configure_handler_id); gtk_widget_destroy (status_window->window); g_object_set_data (G_OBJECT (status_window->toplevel), "gtk-im-xim-status-window", NULL); g_free (status_window); } static gboolean status_window_configure (GtkWidget *toplevel, GdkEventConfigure *event, StatusWindow *status_window) { GdkRectangle rect; GtkRequisition requisition; gint y; gint height = gdk_screen_get_height (gtk_widget_get_screen (toplevel)); gdk_window_get_frame_extents (toplevel->window, &rect); gtk_widget_size_request (status_window->window, &requisition); if (rect.y + rect.height + requisition.height < height) y = rect.y + rect.height; else y = height - requisition.height; gtk_window_move (GTK_WINDOW (status_window->window), rect.x, y); return FALSE; } static GtkWidget * status_window_get (GtkIMContextXIM *context_xim, gboolean create) { GdkWindow *toplevel_gdk; GtkWidget *toplevel; GtkWidget *window; StatusWindow *status_window; GtkWidget *status_label; GdkScreen *screen; GdkWindow *root_window; if (!context_xim->client_window) return NULL; toplevel_gdk = context_xim->client_window; screen = gdk_drawable_get_screen (toplevel_gdk); root_window = gdk_screen_get_root_window (screen); while (TRUE) { GdkWindow *parent = gdk_window_get_parent (toplevel_gdk); if (parent == root_window) break; else toplevel_gdk = parent; } gdk_window_get_user_data (toplevel_gdk, (gpointer *)&toplevel); if (!toplevel) return NULL; status_window = g_object_get_data (G_OBJECT (toplevel), "gtk-im-xim-status-window"); if (status_window) return status_window->window; else if (!create) return NULL; status_window = g_new (StatusWindow, 1); status_window->window = gtk_window_new (GTK_WINDOW_POPUP); status_window->toplevel = toplevel; status_windows = g_slist_prepend (status_windows, status_window); window = status_window->window; gtk_window_set_resizable (GTK_WINDOW (status_window), FALSE); gtk_widget_set_app_paintable (window, TRUE); status_label = gtk_label_new (""); gtk_misc_set_padding (GTK_MISC (status_label), 1, 1); gtk_widget_show (status_label); gtk_container_add (GTK_CONTAINER (window), status_label); status_window->destroy_handler_id = g_signal_connect_swapped (toplevel, "destroy", G_CALLBACK (status_window_free), status_window); status_window->configure_handler_id = g_signal_connect (toplevel, "configure_event", G_CALLBACK (status_window_configure), status_window); status_window_configure (toplevel, NULL, status_window); g_signal_connect (window, "style_set", G_CALLBACK (status_window_style_set), status_label); g_signal_connect (window, "expose_event", G_CALLBACK (status_window_expose_event), NULL); g_object_set_data (G_OBJECT (toplevel), "gtk-im-xim-status-window", status_window); return window; } static gboolean status_window_has_text (GtkWidget *status_window) { GtkWidget *label = GTK_BIN (status_window)->child; const gchar *text = gtk_label_get_text (GTK_LABEL (label)); return text[0] != '\0'; } static void status_window_show (GtkIMContextXIM *context_xim) { GtkWidget *status_window = status_window_get (context_xim, TRUE); context_xim->status_visible = TRUE; if ((context_xim->im_info->style & STATUS_MASK) == XIMStatusCallbacks && status_window && status_window_has_text (status_window)) gtk_widget_show (status_window); } static void status_window_hide (GtkIMContextXIM *context_xim) { GtkWidget *status_window = status_window_get (context_xim, FALSE); context_xim->status_visible = FALSE; if (status_window) gtk_widget_hide (status_window); } static void status_window_set_text (GtkIMContextXIM *context_xim, const gchar *text) { GtkWidget *status_window = status_window_get (context_xim, TRUE); if (status_window) { GtkWidget *label = GTK_BIN (status_window)->child; gtk_label_set_text (GTK_LABEL (label), text); if (context_xim->status_visible && status_window_has_text (status_window)) gtk_widget_show (status_window); else gtk_widget_hide (status_window); } } /** * gtk_im_context_xim_shutdown: * * Destroys all the status windows that are kept by the XIM contexts. This * function should only be called by the XIM module exit routine. **/ void gtk_im_context_xim_shutdown (void) { while (status_windows) status_window_free (status_windows->data); }