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Bug #605802: Fix input of Japanese characters in register with SCIM, IIIMF and XIM

Browse Source 
Patch by Yasuaki Taniguchi.

The main functions are
(1) synchronization of preedit string in the register window and sheet->entry,
(2) application to pango attributes to preedit string in the register window.

git-svn-id: svn+ssh://svn.gnucash.org/repo/gnucash/trunk@18638 57a11ea4-9604-0410-9ed3-97b8803252fd
This commit is contained in:
Christian Stimming 2010-02-10 20:35:31 +00:00
parent 1abc138cbc
commit fb8d635294
3 changed files with 442 additions and 26 deletions
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24
src/register/register-gnome/gnucash-item-edit.c
View File

@ -185,7 +185,9 @@ gnc_item_edit_draw_info (GncItemEdit *item_edit, int x, int y, TextDrawInfo *inf
PangoRectangle strong_pos;
PangoAttribute *attr;
PangoAttrList *attr_list;
GnucashSheet *sheet;
sheet = GNUCASH_SHEET (item_edit->sheet);
style = item_edit->style;
table = item_edit->sheet->table;
@ -233,6 +235,17 @@ gnc_item_edit_draw_info (GncItemEdit *item_edit, int x, int y, TextDrawInfo *inf
info->layout = gtk_widget_create_pango_layout (GTK_WIDGET (item_edit->sheet), text);
/* IMContext attributes*/
if (sheet->preedit_length && sheet->preedit_attrs != NULL) {
PangoAttrList *tmp_attrs = pango_attr_list_new ();
pango_attr_list_splice (tmp_attrs, sheet->preedit_attrs,
g_utf8_offset_to_pointer (text, sheet->preedit_start_position) - text ,
g_utf8_offset_to_pointer (text, sheet->preedit_start_position + sheet->preedit_char_length) - text);
pango_layout_set_attributes (info->layout, tmp_attrs);
pango_attr_list_unref (tmp_attrs);
}
/* Selection */
if (start_pos != end_pos)
{
@ -297,6 +310,17 @@ gnc_item_edit_draw_info (GncItemEdit *item_edit, int x, int y, TextDrawInfo *inf
info->hatch_rect.height = hd;
}
/* Calcurate IMContext aux window position */
{
gint xoff, yoff;
GdkRectangle rect;
rect = info->cursor_rect;
gnome_canvas_get_scroll_offsets(GNOME_CANVAS(sheet), &xoff, &yoff);
rect.x += (x - xoff);
rect.y += (y - yoff);
gtk_im_context_set_cursor_location (sheet->im_context, &rect);
}
gnc_item_edit_update_offset (item_edit, info);
}

427
src/register/register-gnome/gnucash-sheet.c
View File

@ -83,6 +83,17 @@ static void gnucash_sheet_deactivate_cursor_cell (GnucashSheet *sheet);
static void gnucash_sheet_activate_cursor_cell (GnucashSheet *sheet,
gboolean changed_cells);
static void gnucash_sheet_stop_editing (GnucashSheet *sheet);
static void gnucash_sheet_im_context_reset (GnucashSheet *sheet);
static void gnucash_sheet_commit_cb (GtkIMContext *context, const gchar *str,
GnucashSheet *sheet);
static void gnucash_sheet_preedit_changed_cb (GtkIMContext *context,
GnucashSheet *sheet);
static gboolean gnucash_sheet_retrieve_surrounding_cb (GtkIMContext *context,
GnucashSheet *sheet);
static gboolean gnucash_sheet_delete_surrounding_cb (GtkIMContext *context,
gint offset,
gint n_chars,
GnucashSheet *sheet);
/** Implementation *****************************************************/
@ -191,20 +202,41 @@ gnucash_sheet_hide_editing_cursor (GnucashSheet *sheet)
static void
gnucash_sheet_stop_editing (GnucashSheet *sheet)
{
if (sheet->insert_signal != 0)
g_signal_handler_disconnect (G_OBJECT(sheet->entry),
sheet->insert_signal);
if (sheet->delete_signal != 0)
g_signal_handler_disconnect (G_OBJECT(sheet->entry),
sheet->delete_signal);
if (sheet->commit_signal != 0)
g_signal_handler_disconnect (G_OBJECT(sheet->im_context),
sheet->commit_signal);
if (sheet->preedit_changed_signal != 0)
g_signal_handler_disconnect (G_OBJECT(sheet->im_context),
sheet->preedit_changed_signal);
if (sheet->retrieve_surrounding_signal != 0)
g_signal_handler_disconnect (G_OBJECT(sheet->im_context),
sheet->retrieve_surrounding_signal);
if (sheet->delete_surrounding_signal != 0)
g_signal_handler_disconnect (G_OBJECT(sheet->im_context),
sheet->delete_surrounding_signal);
sheet->insert_signal = 0;
sheet->delete_signal = 0;
sheet->commit_signal = 0;
sheet->preedit_changed_signal = 0;
sheet->retrieve_surrounding_signal = 0;
sheet->delete_surrounding_signal = 0;
gnucash_sheet_im_context_reset(sheet);
gnucash_sheet_hide_editing_cursor (sheet);
sheet->editing = FALSE;
sheet->input_cancelled = FALSE;
}
@ -270,6 +302,7 @@ gnucash_sheet_activate_cursor_cell (GnucashSheet *sheet,
gnucash_sheet_redraw_block (sheet, virt_loc.vcell_loc);
else
{
gnucash_sheet_im_context_reset(sheet);
gnucash_sheet_start_editing_at_cursor (sheet);
gtk_editable_set_position (editable, cursor_pos);
@ -657,9 +690,15 @@ gnucash_sheet_finalize (GObject *object)
if (G_OBJECT_CLASS (sheet_parent_class)->finalize)
(*G_OBJECT_CLASS (sheet_parent_class)->finalize)(object);
/* Clean up IMContext and unref */
gnucash_sheet_im_context_reset(sheet);
g_object_unref (sheet->im_context);
/* This has to come after the parent destroy, so the item edit
destruction can do its disconnects. */
g_object_unref (sheet->entry);
}
@ -674,6 +713,8 @@ gnucash_sheet_realize (GtkWidget *widget)
window = widget->window;
gdk_window_set_back_pixmap (GTK_LAYOUT (widget)->bin_window,
NULL, FALSE);
gtk_im_context_set_client_window( GNUCASH_SHEET (widget)->im_context,
window);
}
@ -942,34 +983,69 @@ gnucash_sheet_insert_cb (GtkWidget *widget,
g_signal_stop_emission_by_name (G_OBJECT(sheet->entry),
"insert_text");
}
}
else if (retval == NULL)
{
retval = old_text;
/* reset IMContext if disallowed chars and clear preedit*/
gnucash_sheet_im_context_reset(sheet);
/* the entry was disallowed, so we stop the insert signal */
g_signal_stop_emission_by_name (G_OBJECT (sheet->entry),
"insert_text");
}
if (*position < 0)
*position = g_utf8_strlen(retval, -1);
/* sync cursor position and selection to preedit if it exists */
if (sheet->preedit_length) {
gtk_editable_set_position (editable,
sheet->preedit_start_position
+ sheet->preedit_cursor_position);
}
else if (*position < 0)
*position = g_utf8_strlen(retval, -1);
#if GTK_ALLOWED_SELECTION_WITHIN_INSERT_SIGNAL
gtk_editable_select_region (editable, start_sel, end_sel);
if (sheet->preedit_length
&& sheet->preedit_selection_length != 0) {
gtk_editable_select_region (editable,
sheet->preedit_start_position
+ sheet->preedit_char_length,
sheet->preedit_start_position
+ sheet->preedit_char_length
+ sheet->preedit_selection_length);
}
else
gtk_editable_select_region (editable, start_sel, end_sel);
#else
{
select_info *info;
if (start_sel != end_sel) {
info = g_malloc(sizeof(*info));
info->editable = editable;
info->start_sel = start_sel;
info->end_sel = end_sel;
g_timeout_add(/*ASAP*/ 1,
(GSourceFunc)gnucash_sheet_select_data_cb,
info);
}
}
#endif
if (sheet->preedit_length
&& sheet->preedit_selection_length != 0) {
select_info *info;
info = g_malloc(sizeof(*info));
info->editable = editable;
info->start_sel = sheet->preedit_start_position
+ sheet->preedit_char_length;
info->end_sel = sheet->preedit_start_position
+ sheet->preedit_char_length
+ sheet->preedit_selection_length;
g_timeout_add(/*ASAP*/ 1,
(GSourceFunc)gnucash_sheet_select_data_cb,
info);
} else if (start_sel != end_sel) {
select_info *info;
info = g_malloc(sizeof(*info));
info->editable = editable;
info->start_sel = start_sel;
info->end_sel = end_sel;
g_timeout_add(/*ASAP*/ 1,
(GSourceFunc)gnucash_sheet_select_data_cb,
info);
}
#endif /* GTK_ALLOWED_SELECTION_WITHIN_INSERT_SIGNAL */
g_string_free (new_text_gs, TRUE);
g_string_free (change_text_gs, TRUE);
}
@ -1070,9 +1146,27 @@ gnucash_sheet_delete_cb (GtkWidget *widget,
"delete_text");
}
gtk_editable_set_position (editable, cursor_position);
if (start_sel != end_sel)
gtk_editable_select_region(editable, start_sel, end_sel);
/* sync cursor position and selection to preedit if it exists */
if (sheet->preedit_length) {
gtk_editable_set_position (editable,
sheet->preedit_start_position
+ sheet->preedit_cursor_position);
} else {
gtk_editable_set_position (editable, cursor_position);
}
if (sheet->preedit_length
&& sheet->preedit_selection_length != 0) {
gtk_editable_select_region (editable,
sheet->preedit_start_position
+ sheet->preedit_char_length,
sheet->preedit_start_position
+ sheet->preedit_char_length
+ sheet->preedit_selection_length);
}
else if (start_sel != end_sel)
gtk_editable_select_region (editable, start_sel, end_sel);
g_string_free (new_text_gs, TRUE);
}
@ -1136,7 +1230,8 @@ gnucash_sheet_focus_in_event (GtkWidget *widget, GdkEventFocus *event)
(widget, event);
gnc_item_edit_focus_in (GNC_ITEM_EDIT(sheet->item_editor));
gtk_im_context_focus_in(sheet->im_context);
return FALSE;
}
@ -1149,8 +1244,8 @@ gnucash_sheet_focus_out_event (GtkWidget *widget, GdkEventFocus *event)
(*GTK_WIDGET_CLASS (sheet_parent_class)->focus_out_event)
(widget, event);
gtk_im_context_focus_out (sheet->im_context);
gnc_item_edit_focus_out (GNC_ITEM_EDIT(sheet->item_editor));
return FALSE;
}
@ -1184,8 +1279,27 @@ gnucash_sheet_start_editing_at_cursor (GnucashSheet *sheet)
sheet->delete_signal =
g_signal_connect(G_OBJECT(sheet->entry), "delete_text",
G_CALLBACK(gnucash_sheet_delete_cb), sheet);
sheet->commit_signal =
g_signal_connect (G_OBJECT (sheet->im_context), "commit",
G_CALLBACK (gnucash_sheet_commit_cb), sheet);
sheet->preedit_changed_signal =
g_signal_connect (G_OBJECT (sheet->im_context), "preedit_changed",
G_CALLBACK (gnucash_sheet_preedit_changed_cb),
sheet);
sheet->retrieve_surrounding_signal =
g_signal_connect (G_OBJECT (sheet->im_context),
"retrieve_surrounding",
G_CALLBACK (gnucash_sheet_retrieve_surrounding_cb),
sheet);
sheet->delete_surrounding_signal =
g_signal_connect (G_OBJECT (sheet->im_context), "delete_surrounding",
G_CALLBACK (gnucash_sheet_delete_surrounding_cb),
sheet);
}
static gboolean
gnucash_motion_event (GtkWidget *widget, GdkEventMotion *event)
{
@ -1607,6 +1721,9 @@ gnucash_sheet_direct_event(GnucashSheet *sheet, GdkEvent *event)
&new_start, &new_end,
event);
/* flag for IMContext */
sheet->direct_updated = result;
changed = FALSE;
if (new_text != NULL)
@ -1645,7 +1762,8 @@ gnucash_sheet_direct_event(GnucashSheet *sheet, GdkEvent *event)
}
static gint
gnucash_sheet_key_press_event (GtkWidget *widget, GdkEventKey *event)
gnucash_sheet_key_press_event_internal (GtkWidget *widget, GdkEventKey *event,
gboolean is_commit)
{
Table *table;
GnucashSheet *sheet;
@ -1673,8 +1791,8 @@ gnucash_sheet_key_press_event (GtkWidget *widget, GdkEventKey *event)
/* Don't process any keystrokes where a modifier key (Alt,
* Meta, etc.) is being held down. This should't include
* MOD2, aka NUM LOCK. */
if (event->state & (GDK_MOD1_MASK | GDK_MOD3_MASK |
* MOD2, aka NUM LOCK. */
if (event->state & (GDK_MOD1_MASK | GDK_MOD3_MASK |
GDK_MOD4_MASK | GDK_MOD5_MASK))
pass_on = TRUE;
@ -1771,7 +1889,7 @@ gnucash_sheet_key_press_event (GtkWidget *widget, GdkEventKey *event)
}
/* Forward the keystroke to the input line */
if (pass_on)
if (pass_on && !is_commit)
return gtk_widget_event (sheet->entry, (GdkEvent *) event);
abort_move = gnc_table_traverse_update (table, cur_virt_loc,
@ -1787,6 +1905,234 @@ gnucash_sheet_key_press_event (GtkWidget *widget, GdkEventKey *event)
return TRUE;
}
static gint
gnucash_sheet_key_press_event (GtkWidget *widget, GdkEventKey *event)
{
GnucashSheet *sheet;
gint result;
g_return_val_if_fail(widget != NULL, TRUE);
g_return_val_if_fail(GNUCASH_IS_SHEET(widget), TRUE);
g_return_val_if_fail(event != NULL, TRUE);
sheet = GNUCASH_SHEET (widget);
if (gtk_im_context_filter_keypress (sheet->im_context, event)) {
sheet->need_im_reset = TRUE;
return TRUE;
}
result= gnucash_sheet_key_press_event_internal (widget, event, FALSE);
sheet->direct_updated = FALSE;
return result;
}
static gint
gnucash_sheet_key_release_event(GtkWidget *widget, GdkEventKey *event)
{
GnucashSheet *sheet;
g_return_val_if_fail(widget != NULL, TRUE);
g_return_val_if_fail(GNUCASH_IS_SHEET(widget), TRUE);
g_return_val_if_fail(event != NULL, TRUE);
sheet = GNUCASH_SHEET (widget);
if(gtk_im_context_filter_keypress (sheet->im_context, event)){
sheet->need_im_reset = TRUE;
return TRUE;
}
return FALSE;
}
static void
gnucash_sheet_im_context_reset_flags(GnucashSheet *sheet)
{
sheet->preedit_length = 0;
sheet->preedit_char_length = 0;
sheet->preedit_start_position = -1;
sheet->preedit_cursor_position = 0;
sheet->preedit_selection_length = 0;
}
static void
gnucash_sheet_im_context_reset(GnucashSheet *sheet)
{
if (sheet->need_im_reset) {
if (sheet->preedit_attrs) {
pango_attr_list_unref (sheet->preedit_attrs);
sheet->preedit_attrs = NULL;
}
gtk_im_context_reset (sheet->im_context);
sheet->need_im_reset = FALSE;
}
gnucash_sheet_im_context_reset_flags(sheet);
}
static void
gnucash_sheet_commit_cb (GtkIMContext *context, const gchar *str,
GnucashSheet *sheet)
{
GtkEditable *editable;
gint tmp_pos, length, sel_start, sel_end;
g_return_if_fail(strlen(str) > 0);
g_return_if_fail(sheet->editing == TRUE);
editable = GTK_EDITABLE (sheet->entry);
if(strlen(str) == 1 ) {
GdkEvent *event;
GdkEventKey *keyevent;
/* never happen because str is UTF-8 */
g_return_if_fail(str[0]> 0);
/* save cursor and selection */
tmp_pos = gtk_editable_get_position(editable);
gtk_editable_get_selection_bounds (editable, &sel_start, &sel_end);
/* Reconstruct keyevent and call key_press_event_internal
* to enable accellaration key.
* */
event = gdk_event_new (GDK_KEY_PRESS);
keyevent = (GdkEventKey *) event;
keyevent->keyval = gdk_unicode_to_keyval(str[0]);
gnucash_sheet_key_press_event_internal((GtkWidget*) sheet, keyevent, TRUE);
gdk_event_free(event);
if( sheet->direct_updated ) {
sheet->direct_updated = FALSE;
gnucash_sheet_im_context_reset(sheet);
return;
} else {
/* restore cursor and selection */
gtk_editable_set_position(editable, tmp_pos);
gtk_editable_select_region(editable, sel_start, sel_end);
}
}
if (gtk_editable_get_selection_bounds (editable, &sel_start, &sel_end)){
if (sel_start != sel_end) {
gtk_editable_delete_selection (editable);
sheet->preedit_selection_length = 0;
}
}
/* delete preedit string from editable*/
if (sheet->preedit_length){
gtk_editable_delete_text (editable, sheet->preedit_start_position,
sheet->preedit_start_position + sheet->preedit_char_length);
}
tmp_pos = (sheet->preedit_start_position == -1)?
gtk_editable_get_position (editable)
:sheet->preedit_start_position;
gtk_editable_insert_text (editable, str, strlen (str), &tmp_pos);
gtk_editable_set_position (editable, tmp_pos);
gnucash_sheet_im_context_reset_flags(sheet);
}
static void
gnucash_sheet_preedit_changed_cb (GtkIMContext *context, GnucashSheet *sheet)
{
gchar *preedit_string;
GtkEditable *editable;
g_return_if_fail(context != NULL);
g_return_if_fail(sheet->editing == TRUE);
editable = GTK_EDITABLE (sheet->entry);
/* save preedit start position and selection */
if(sheet->preedit_length == 0) {
int start_pos, end_pos;
if ( gtk_editable_get_selection_bounds (editable, &start_pos, &end_pos)) {
sheet->preedit_start_position = start_pos;
sheet->preedit_selection_length = end_pos - start_pos;
} else {
sheet->preedit_start_position =
gtk_editable_get_position (editable);
}
}
if (sheet->preedit_attrs)
pango_attr_list_unref (sheet->preedit_attrs);
gtk_im_context_get_preedit_string (sheet->im_context, &preedit_string,
&sheet->preedit_attrs, &(sheet->preedit_cursor_position));
if (sheet->preedit_length)
gtk_editable_delete_text (editable, sheet->preedit_start_position,
sheet->preedit_start_position + sheet->preedit_char_length);
sheet->preedit_length = strlen (preedit_string);
sheet->preedit_char_length = g_utf8_strlen(preedit_string, -1);
if (sheet->preedit_length) {
int tmp_pos = sheet->preedit_start_position;
gtk_editable_insert_text (editable, preedit_string, sheet->preedit_length, &tmp_pos);
gtk_editable_set_position (editable, sheet->preedit_start_position
+ sheet->preedit_cursor_position);
if( sheet->preedit_selection_length != 0) {
gtk_editable_select_region (editable,
sheet->preedit_start_position
+ sheet->preedit_char_length,
sheet->preedit_start_position
+ sheet->preedit_char_length
+ sheet->preedit_selection_length);
}
} else {
gnucash_sheet_im_context_reset_flags(sheet);
}
g_free (preedit_string);
}
static gboolean
gnucash_sheet_retrieve_surrounding_cb (GtkIMContext *context, GnucashSheet *sheet)
{
GtkEditable *editable;
gchar *surrounding;
gint cur_pos;
editable = GTK_EDITABLE (sheet->entry);
surrounding = gtk_editable_get_chars (editable, 0, -1);
cur_pos = gtk_editable_get_position (editable);
gtk_im_context_set_surrounding (context,
surrounding, strlen (surrounding),
g_utf8_offset_to_pointer (surrounding, cur_pos) - surrounding);
g_free (surrounding);
return TRUE;
}
static gboolean
gnucash_sheet_delete_surrounding_cb (GtkIMContext *context, gint offset,
gint n_chars, GnucashSheet *sheet)
{
GtkEditable *editable;
gint cur_pos;
editable = GTK_EDITABLE (sheet->entry);
cur_pos = gtk_editable_get_position (editable);
gtk_editable_delete_text (editable,
cur_pos + offset,
cur_pos + offset + n_chars);
return TRUE;
}
static void
gnucash_sheet_goto_virt_loc (GnucashSheet *sheet, VirtualLocation virt_loc)
@ -2339,6 +2685,7 @@ gnucash_sheet_create_color_hack(GnucashSheet *sheet)
g_signal_connect_after(sheet, "realize",
G_CALLBACK(gnucash_sheet_realize_entry),
sheet->split_color);
}
/*************************************************************/
@ -2368,6 +2715,7 @@ gnucash_sheet_class_init (GnucashSheetClass *class)
widget_class->focus_out_event = gnucash_sheet_focus_out_event;
widget_class->key_press_event = gnucash_sheet_key_press_event;
widget_class->key_release_event = gnucash_sheet_key_release_event;
widget_class->button_press_event = gnucash_button_press_event;
widget_class->button_release_event = gnucash_button_release_event;
widget_class->motion_notify_event = gnucash_motion_event;
@ -2412,6 +2760,22 @@ gnucash_sheet_init (GnucashSheet *sheet)
sheet->blocks = g_table_new (sizeof (SheetBlock),
gnucash_sheet_block_construct,
gnucash_sheet_block_destroy, NULL);
/* setup IMContext */
sheet->im_context = gtk_im_multicontext_new ();
sheet->preedit_length = 0;
sheet->preedit_char_length = 0;
sheet->preedit_start_position = -1;
sheet->preedit_cursor_position = 0;
sheet->preedit_selection_length = 0;
sheet->preedit_attrs = NULL;
sheet->direct_updated = FALSE;
sheet->need_im_reset = FALSE;
sheet->commit_signal = 0;
sheet->preedit_changed_signal = 0;
sheet->retrieve_surrounding_signal = 0;
sheet->delete_surrounding_signal = 0;
}
@ -2487,6 +2851,17 @@ gnucash_sheet_new (Table *table)
#endif
/*gtk_layout_put (GTK_LAYOUT (sheet), sheet->entry, 0, 0);*/
/* disable IMContext of GtkEntry widget because we handle
IMContext on the GnucashSheet widget.
{
GValue im_name = {0};
g_value_init (&im_name, G_TYPE_STRING);
g_value_set_static_string (&im_name, "none");
g_object_set_property((GObject*) (sheet->entry), "im-module",
&im_name);
}
*/
/* set up the editor */
sheet->item_editor = gnc_item_edit_new(sheet_group, sheet, sheet->entry);

17
src/register/register-gnome/gnucash-sheet.h
View File

@ -126,6 +126,23 @@ typedef struct
GFunc moved_cb;
gpointer moved_cb_data;
/* IMContext */
GtkIMContext *im_context;
gint preedit_length; /* num of bytes */
gint preedit_char_length; /* num of chars in UTF-8 */
gint preedit_start_position; /* save preedit start position *
* combined with selection start */
gint preedit_cursor_position; /* save preedit cursor position */
gint preedit_selection_length;
PangoAttrList *preedit_attrs;
gboolean direct_updated;
gboolean need_im_reset;
guint commit_signal;
guint preedit_changed_signal;
guint retrieve_surrounding_signal;
guint delete_surrounding_signal;
} GnucashSheet;