/* GAIL - The GNOME Accessibility Enabling Library
* Copyright 2001, 2002, 2003 Sun Microsystems 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 "config.h"
#include <string.h>
#undef GTK_DISABLE_DEPRECATED
#include <gtk/gtk.h>
#include "gaillabel.h"
#include "gailwindow.h"
#include <libgail-util/gailmisc.h>
static void gail_label_class_init (GailLabelClass *klass);
static void gail_label_init (GailLabel *label);
static void gail_label_real_initialize (AtkObject *obj,
gpointer data);
static void gail_label_real_notify_gtk (GObject *obj,
GParamSpec *pspec);
static void gail_label_map_gtk (GtkWidget *widget,
gpointer data);
static void gail_label_init_text_util (GailLabel *gail_label,
GtkWidget *widget);
static void gail_label_finalize (GObject *object);
static void atk_text_interface_init (AtkTextIface *iface);
/* atkobject.h */
static const gchar* gail_label_get_name (AtkObject *accessible);
static AtkStateSet* gail_label_ref_state_set (AtkObject *accessible);
static AtkRelationSet* gail_label_ref_relation_set (AtkObject *accessible);
/* atktext.h */
static gchar* gail_label_get_text (AtkText *text,
gint start_pos,
gint end_pos);
static gunichar gail_label_get_character_at_offset(AtkText *text,
gint offset);
static gchar* gail_label_get_text_before_offset(AtkText *text,
gint offset,
AtkTextBoundary boundary_type,
gint *start_offset,
gint *end_offset);
static gchar* gail_label_get_text_at_offset (AtkText *text,
gint offset,
AtkTextBoundary boundary_type,
gint *start_offset,
gint *end_offset);
static gchar* gail_label_get_text_after_offset (AtkText *text,
gint offset,
AtkTextBoundary boundary_type,
gint *start_offset,
gint *end_offset);
static gint gail_label_get_character_count (AtkText *text);
static gint gail_label_get_caret_offset (AtkText *text);
static gboolean gail_label_set_caret_offset (AtkText *text,
gint offset);
static gint gail_label_get_n_selections (AtkText *text);
static gchar* gail_label_get_selection (AtkText *text,
gint selection_num,
gint *start_offset,
gint *end_offset);
static gboolean gail_label_add_selection (AtkText *text,
gint start_offset,
gint end_offset);
static gboolean gail_label_remove_selection (AtkText *text,
gint selection_num);
static gboolean gail_label_set_selection (AtkText *text,
gint selection_num,
gint start_offset,
gint end_offset);
static void gail_label_get_character_extents (AtkText *text,
gint offset,
gint *x,
gint *y,
gint *width,
gint *height,
AtkCoordType coords);
static gint gail_label_get_offset_at_point (AtkText *text,
gint x,
gint y,
AtkCoordType coords);
static AtkAttributeSet* gail_label_get_run_attributes
(AtkText *text,
gint offset,
gint *start_offset,
gint *end_offset);
static AtkAttributeSet* gail_label_get_default_attributes
(AtkText *text);
G_DEFINE_TYPE_WITH_CODE (GailLabel, gail_label, GAIL_TYPE_WIDGET,
G_IMPLEMENT_INTERFACE (ATK_TYPE_TEXT, atk_text_interface_init))
static void
gail_label_class_init (GailLabelClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
AtkObjectClass *class = ATK_OBJECT_CLASS (klass);
GailWidgetClass *widget_class;
gobject_class->finalize = gail_label_finalize;
widget_class = (GailWidgetClass*)klass;
widget_class->notify_gtk = gail_label_real_notify_gtk;
class->get_name = gail_label_get_name;
class->ref_state_set = gail_label_ref_state_set;
class->ref_relation_set = gail_label_ref_relation_set;
class->initialize = gail_label_real_initialize;
}
static void
gail_label_init (GailLabel *label)
{
}
static void
gail_label_real_initialize (AtkObject *obj,
gpointer data)
{
GtkWidget *widget;
GailLabel *gail_label;
ATK_OBJECT_CLASS (gail_label_parent_class)->initialize (obj, data);
gail_label = GAIL_LABEL (obj);
gail_label->window_create_handler = 0;
gail_label->has_top_level = FALSE;
gail_label->cursor_position = 0;
gail_label->selection_bound = 0;
gail_label->textutil = NULL;
gail_label->label_length = 0;
widget = GTK_WIDGET (data);
if (gtk_widget_get_mapped (widget))
gail_label_init_text_util (gail_label, widget);
else
g_signal_connect (widget,
"map",
G_CALLBACK (gail_label_map_gtk),
gail_label);
/*
* Check whether ancestor of GtkLabel is a GtkButton and if so
* set accessible parent for GailLabel
*/
while (widget != NULL)
{
widget = gtk_widget_get_parent (widget);
if (GTK_IS_BUTTON (widget))
{
atk_object_set_parent (obj, gtk_widget_get_accessible (widget));
break;
}
}
if (GTK_IS_ACCEL_LABEL (widget))
obj->role = ATK_ROLE_ACCEL_LABEL;
else
obj->role = ATK_ROLE_LABEL;
}
static void
gail_label_map_gtk (GtkWidget *widget,
gpointer data)
{
GailLabel *gail_label;
gail_label = GAIL_LABEL (data);
gail_label_init_text_util (gail_label, widget);
}
static void
gail_label_init_text_util (GailLabel *gail_label,
GtkWidget *widget)
{
GtkLabel *label;
const gchar *label_text;
if (gail_label->textutil == NULL)
gail_label->textutil = gail_text_util_new ();
label = GTK_LABEL (widget);
label_text = gtk_label_get_text (label);
gail_text_util_text_setup (gail_label->textutil, label_text);
if (label_text == NULL)
gail_label->label_length = 0;
else
gail_label->label_length = g_utf8_strlen (label_text, -1);
}
static void
notify_name_change (AtkObject *atk_obj)
{
GtkLabel *label;
GailLabel *gail_label;
GtkWidget *widget;
GObject *gail_obj;
widget = GTK_ACCESSIBLE (atk_obj)->widget;
if (widget == NULL)
/*
* State is defunct
*/
return;
gail_obj = G_OBJECT (atk_obj);
label = GTK_LABEL (widget);
gail_label = GAIL_LABEL (atk_obj);
if (gail_label->textutil == NULL)
return;
/*
* Check whether the label has actually changed before emitting
* notification.
*/
if (gail_label->textutil->buffer)
{
GtkTextIter start, end;
const char *new_label;
char *old_label;
int same;
gtk_text_buffer_get_start_iter (gail_label->textutil->buffer, &start);
gtk_text_buffer_get_end_iter (gail_label->textutil->buffer, &end);
old_label = gtk_text_buffer_get_text (gail_label->textutil->buffer, &start, &end, FALSE);
new_label = gtk_label_get_text (label);
same = strcmp (new_label, old_label);
g_free (old_label);
if (same == 0)
return;
}
/* Create a delete text and an insert text signal */
g_signal_emit_by_name (gail_obj, "text_changed::delete", 0,
gail_label->label_length);
gail_label_init_text_util (gail_label, widget);
g_signal_emit_by_name (gail_obj, "text_changed::insert", 0,
gail_label->label_length);
if (atk_obj->name == NULL)
/*
* The label has changed so notify a change in accessible-name
*/
g_object_notify (gail_obj, "accessible-name");
g_signal_emit_by_name (gail_obj, "visible_data_changed");
}
static void
window_created (GObject *obj,
gpointer data)
{
g_return_if_fail (GAIL_LABEL (data));
notify_name_change (ATK_OBJECT (data));
}
static void
gail_label_real_notify_gtk (GObject *obj,
GParamSpec *pspec)
{
GtkWidget *widget = GTK_WIDGET (obj);
AtkObject* atk_obj = gtk_widget_get_accessible (widget);
GtkLabel *label;
GailLabel *gail_label;
GObject *gail_obj;
AtkObject *top_level;
AtkObject *temp_obj;
gail_label = GAIL_LABEL (atk_obj);
if (strcmp (pspec->name, "label") == 0)
{
/*
* We may get a label change for a label which is not attached to an
* application. We wait until the toplevel window is created before
* emitting the notification.
*
* This happens when [Ctrl+]Alt+Tab is pressed in metacity
*/
if (!gail_label->has_top_level)
{
temp_obj = atk_obj;
top_level = NULL;
while (temp_obj)
{
top_level = temp_obj;
temp_obj = atk_object_get_parent (top_level);
}
if (atk_object_get_role (top_level) != ATK_ROLE_APPLICATION)
{
if (gail_label->window_create_handler == 0 &&
GAIL_IS_WINDOW (top_level))
gail_label->window_create_handler = g_signal_connect_after (top_level, "create", G_CALLBACK (window_created), atk_obj);
}
else
gail_label->has_top_level = TRUE;
}
if (gail_label->has_top_level)
notify_name_change (atk_obj);
}
else if (strcmp (pspec->name, "cursor-position") == 0)
{
gint start, end, tmp;
gboolean text_caret_moved = FALSE;
gboolean selection_changed = FALSE;
gail_obj = G_OBJECT (atk_obj);
label = GTK_LABEL (widget);
if (gail_label->selection_bound != -1 && gail_label->selection_bound < gail_label->cursor_position)
{
tmp = gail_label->selection_bound;
gail_label->selection_bound = gail_label->cursor_position;
gail_label->cursor_position = tmp;
}
if (gtk_label_get_selection_bounds (label, &start, &end))
{
if (start != gail_label->cursor_position ||
end != gail_label->selection_bound)
{
if (end != gail_label->selection_bound)
{
gail_label->selection_bound = start;
gail_label->cursor_position = end;
}
else
{
gail_label->selection_bound = end;
gail_label->cursor_position = start;
}
text_caret_moved = TRUE;
if (start != end)
selection_changed = TRUE;
}
}
else
{
if (gail_label->cursor_position != gail_label->selection_bound)
selection_changed = TRUE;
if (gtk_label_get_selectable (label))
{
if (gail_label->cursor_position != -1 && start != gail_label->cursor_position)
text_caret_moved = TRUE;
if (gail_label->selection_bound != -1 && end != gail_label->selection_bound)
{
text_caret_moved = TRUE;
gail_label->cursor_position = end;
gail_label->selection_bound = start;
}
else
{
gail_label->cursor_position = start;
gail_label->selection_bound = end;
}
}
else
{
/* GtkLabel has become non selectable */
gail_label->cursor_position = 0;
gail_label->selection_bound = 0;
text_caret_moved = TRUE;
}
}
if (text_caret_moved)
g_signal_emit_by_name (gail_obj, "text_caret_moved",
gail_label->cursor_position);
if (selection_changed)
g_signal_emit_by_name (gail_obj, "text_selection_changed");
}
else
GAIL_WIDGET_CLASS (gail_label_parent_class)->notify_gtk (obj, pspec);
}
static void
gail_label_finalize (GObject *object)
{
GailLabel *label = GAIL_LABEL (object);
if (label->textutil)
g_object_unref (label->textutil);
G_OBJECT_CLASS (gail_label_parent_class)->finalize (object);
}
/* atkobject.h */
static AtkStateSet*
gail_label_ref_state_set (AtkObject *accessible)
{
AtkStateSet *state_set;
GtkWidget *widget;
state_set = ATK_OBJECT_CLASS (gail_label_parent_class)->ref_state_set (accessible);
widget = GTK_ACCESSIBLE (accessible)->widget;
if (widget == NULL)
return state_set;
atk_state_set_add_state (state_set, ATK_STATE_MULTI_LINE);
return state_set;
}
AtkRelationSet*
gail_label_ref_relation_set (AtkObject *obj)
{
GtkWidget *widget;
AtkRelationSet *relation_set;
g_return_val_if_fail (GAIL_IS_LABEL (obj), NULL);
widget = GTK_ACCESSIBLE (obj)->widget;
if (widget == NULL)
/*
* State is defunct
*/
return NULL;
relation_set = ATK_OBJECT_CLASS (gail_label_parent_class)->ref_relation_set (obj);
if (!atk_relation_set_contains (relation_set, ATK_RELATION_LABEL_FOR))
{
/*
* Get the mnemonic widget
*
* The relation set is not updated if the mnemonic widget is changed
*/
GtkWidget *mnemonic_widget = GTK_LABEL (widget)->mnemonic_widget;
if (mnemonic_widget)
{
AtkObject *accessible_array[1];
AtkRelation* relation;
if (!gtk_widget_get_can_focus (mnemonic_widget))
{
/*
* Handle the case where a GtkFileChooserButton is specified as the
* mnemonic widget. use the combobox which is a child of the
* GtkFileChooserButton as the mnemonic widget. See bug #359843.
*/
if (GTK_IS_BOX (mnemonic_widget))
{
GList *list, *tmpl;
list = gtk_container_get_children (GTK_CONTAINER (mnemonic_widget));
if (g_list_length (list) == 2)
{
tmpl = g_list_last (list);
if (GTK_IS_COMBO_BOX(tmpl->data))
{
mnemonic_widget = GTK_WIDGET(tmpl->data);
}
}
g_list_free (list);
}
/*
* Handle the case where a GnomeIconEntry is specified as the
* mnemonic widget. use the button which is a grandchild of the
* GnomeIconEntry as the mnemonic widget. See bug #133967.
*/
else if (GTK_IS_BOX (mnemonic_widget))
{
GList *list;
list = gtk_container_get_children (GTK_CONTAINER (mnemonic_widget));
if (g_list_length (list) == 1)
{
if (GTK_IS_ALIGNMENT (list->data))
{
GtkWidget *temp_widget;
temp_widget = GTK_BIN (list->data)->child;
if (GTK_IS_BUTTON (temp_widget))
mnemonic_widget = temp_widget;
}
else if (GTK_IS_HBOX (list->data))
{
GtkWidget *temp_widget;
temp_widget = GTK_WIDGET (list->data);
g_list_free (list);
list = gtk_container_get_children (GTK_CONTAINER (temp_widget));
if (GTK_IS_COMBO (list->data))
{
mnemonic_widget = GTK_WIDGET (list->data);
}
}
}
g_list_free (list);
}
}
accessible_array[0] = gtk_widget_get_accessible (mnemonic_widget);
relation = atk_relation_new (accessible_array, 1,
ATK_RELATION_LABEL_FOR);
atk_relation_set_add (relation_set, relation);
/*
* Unref the relation so that it is not leaked.
*/
g_object_unref (relation);
}
}
return relation_set;
}
static const gchar*
gail_label_get_name (AtkObject *accessible)
{
const gchar *name;
g_return_val_if_fail (GAIL_IS_LABEL (accessible), NULL);
name = ATK_OBJECT_CLASS (gail_label_parent_class)->get_name (accessible);
if (name != NULL)
return name;
else
{
/*
* Get the text on the label
*/
GtkWidget *widget;
widget = GTK_ACCESSIBLE (accessible)->widget;
if (widget == NULL)
/*
* State is defunct
*/
return NULL;
g_return_val_if_fail (GTK_IS_LABEL (widget), NULL);
return gtk_label_get_text (GTK_LABEL (widget));
}
}
/* atktext.h */
static void
atk_text_interface_init (AtkTextIface *iface)
{
iface->get_text = gail_label_get_text;
iface->get_character_at_offset = gail_label_get_character_at_offset;
iface->get_text_before_offset = gail_label_get_text_before_offset;
iface->get_text_at_offset = gail_label_get_text_at_offset;
iface->get_text_after_offset = gail_label_get_text_after_offset;
iface->get_character_count = gail_label_get_character_count;
iface->get_caret_offset = gail_label_get_caret_offset;
iface->set_caret_offset = gail_label_set_caret_offset;
iface->get_n_selections = gail_label_get_n_selections;
iface->get_selection = gail_label_get_selection;
iface->add_selection = gail_label_add_selection;
iface->remove_selection = gail_label_remove_selection;
iface->set_selection = gail_label_set_selection;
iface->get_character_extents = gail_label_get_character_extents;
iface->get_offset_at_point = gail_label_get_offset_at_point;
iface->get_run_attributes = gail_label_get_run_attributes;
iface->get_default_attributes = gail_label_get_default_attributes;
}
static gchar*
gail_label_get_text (AtkText *text,
gint start_pos,
gint end_pos)
{
GtkWidget *widget;
GtkLabel *label;
const gchar *label_text;
widget = GTK_ACCESSIBLE (text)->widget;
if (widget == NULL)
/* State is defunct */
return NULL;
label = GTK_LABEL (widget);
label_text = gtk_label_get_text (label);
if (label_text == NULL)
return NULL;
else
{
if (GAIL_LABEL (text)->textutil == NULL)
gail_label_init_text_util (GAIL_LABEL (text), widget);
return gail_text_util_get_substring (GAIL_LABEL(text)->textutil,
start_pos, end_pos);
}
}
static gchar*
gail_label_get_text_before_offset (AtkText *text,
gint offset,
AtkTextBoundary boundary_type,
gint *start_offset,
gint *end_offset)
{
GtkWidget *widget;
GtkLabel *label;
widget = GTK_ACCESSIBLE (text)->widget;
if (widget == NULL)
/* State is defunct */
return NULL;
/* Get label */
label = GTK_LABEL (widget);
return gail_text_util_get_text (GAIL_LABEL (text)->textutil,
gtk_label_get_layout (label), GAIL_BEFORE_OFFSET,
boundary_type, offset, start_offset, end_offset);
}
static gchar*
gail_label_get_text_at_offset (AtkText *text,
gint offset,
AtkTextBoundary boundary_type,
gint *start_offset,
gint *end_offset)
{
GtkWidget *widget;
GtkLabel *label;
widget = GTK_ACCESSIBLE (text)->widget;
if (widget == NULL)
/* State is defunct */
return NULL;
/* Get label */
label = GTK_LABEL (widget);
return gail_text_util_get_text (GAIL_LABEL (text)->textutil,
gtk_label_get_layout (label), GAIL_AT_OFFSET,
boundary_type, offset, start_offset, end_offset);
}
static gchar*
gail_label_get_text_after_offset (AtkText *text,
gint offset,
AtkTextBoundary boundary_type,
gint *start_offset,
gint *end_offset)
{
GtkWidget *widget;
GtkLabel *label;
widget = GTK_ACCESSIBLE (text)->widget;
if (widget == NULL)
{
/* State is defunct */
return NULL;
}
/* Get label */
label = GTK_LABEL (widget);
return gail_text_util_get_text (GAIL_LABEL (text)->textutil,
gtk_label_get_layout (label), GAIL_AFTER_OFFSET,
boundary_type, offset, start_offset, end_offset);
}
static gint
gail_label_get_character_count (AtkText *text)
{
GtkWidget *widget;
GtkLabel *label;
widget = GTK_ACCESSIBLE (text)->widget;
if (widget == NULL)
/* State is defunct */
return 0;
label = GTK_LABEL (widget);
return g_utf8_strlen (gtk_label_get_text (label), -1);
}
static gint
gail_label_get_caret_offset (AtkText *text)
{
return GAIL_LABEL (text)->cursor_position;
}
static gboolean
gail_label_set_caret_offset (AtkText *text,
gint offset)
{
GtkWidget *widget;
GtkLabel *label;
widget = GTK_ACCESSIBLE (text)->widget;
if (widget == NULL)
/* State is defunct */
return 0;
label = GTK_LABEL (widget);
if (gtk_label_get_selectable (label) &&
offset >= 0 &&
offset <= g_utf8_strlen (label->text, -1))
{
gtk_label_select_region (label, offset, offset);
return TRUE;
}
else
return FALSE;
}
static gint
gail_label_get_n_selections (AtkText *text)
{
GtkWidget *widget;
GtkLabel *label;
gint start, end;
widget = GTK_ACCESSIBLE (text)->widget;
if (widget == NULL)
/* State is defunct */
return 0;
label = GTK_LABEL (widget);
if (!gtk_label_get_selectable (label))
return 0;
if (gtk_label_get_selection_bounds (label, &start, &end))
return 1;
else
return 0;
}
static gchar*
gail_label_get_selection (AtkText *text,
gint selection_num,
gint *start_pos,
gint *end_pos)
{
GtkWidget *widget;
GtkLabel *label;
widget = GTK_ACCESSIBLE (text)->widget;
if (widget == NULL)
/* State is defunct */
return NULL;
label = GTK_LABEL (widget);
/* Only let the user get the selection if one is set, and if the
* selection_num is 0.
*/
if (!gtk_label_get_selectable( label) || selection_num != 0)
return NULL;
if (gtk_label_get_selection_bounds (label, start_pos, end_pos))
{
const gchar* label_text = gtk_label_get_text (label);
if (label_text == NULL)
return 0;
else
return gail_text_util_get_substring (GAIL_LABEL (text)->textutil,
*start_pos, *end_pos);
}
else
return NULL;
}
static gboolean
gail_label_add_selection (AtkText *text,
gint start_pos,
gint end_pos)
{
GtkWidget *widget;
GtkLabel *label;
gint start, end;
widget = GTK_ACCESSIBLE (text)->widget;
if (widget == NULL)
/* State is defunct */
return FALSE;
label = GTK_LABEL (widget);
if (!gtk_label_get_selectable (label))
return FALSE;
if (! gtk_label_get_selection_bounds (label, &start, &end))
{
gtk_label_select_region (label, start_pos, end_pos);
return TRUE;
}
else
return FALSE;
}
static gboolean
gail_label_remove_selection (AtkText *text,
gint selection_num)
{
GtkWidget *widget;
GtkLabel *label;
gint start, end;
widget = GTK_ACCESSIBLE (text)->widget;
if (widget == NULL)
/* State is defunct */
return FALSE;
if (selection_num != 0)
return FALSE;
label = GTK_LABEL (widget);
if (!gtk_label_get_selectable (label))
return FALSE;
if (gtk_label_get_selection_bounds (label, &start, &end))
{
gtk_label_select_region (label, 0, 0);
return TRUE;
}
else
return FALSE;
}
static gboolean
gail_label_set_selection (AtkText *text,
gint selection_num,
gint start_pos,
gint end_pos)
{
GtkWidget *widget;
GtkLabel *label;
gint start, end;
widget = GTK_ACCESSIBLE (text)->widget;
if (widget == NULL)
/* State is defunct */
return FALSE;
if (selection_num != 0)
return FALSE;
label = GTK_LABEL (widget);
if (!gtk_label_get_selectable (label))
return FALSE;
if (gtk_label_get_selection_bounds (label, &start, &end))
{
gtk_label_select_region (label, start_pos, end_pos);
return TRUE;
}
else
return FALSE;
}
static void
gail_label_get_character_extents (AtkText *text,
gint offset,
gint *x,
gint *y,
gint *width,
gint *height,
AtkCoordType coords)
{
GtkWidget *widget;
GtkLabel *label;
PangoRectangle char_rect;
gint index, x_layout, y_layout;
widget = GTK_ACCESSIBLE (text)->widget;
if (widget == NULL)
/* State is defunct */
return;
label = GTK_LABEL (widget);
gtk_label_get_layout_offsets (label, &x_layout, &y_layout);
index = g_utf8_offset_to_pointer (label->text, offset) - label->text;
pango_layout_index_to_pos (gtk_label_get_layout (label), index, &char_rect);
gail_misc_get_extents_from_pango_rectangle (widget, &char_rect,
x_layout, y_layout, x, y, width, height, coords);
}
static gint
gail_label_get_offset_at_point (AtkText *text,
gint x,
gint y,
AtkCoordType coords)
{
GtkWidget *widget;
GtkLabel *label;
gint index, x_layout, y_layout;
widget = GTK_ACCESSIBLE (text)->widget;
if (widget == NULL)
/* State is defunct */
return -1;
label = GTK_LABEL (widget);
gtk_label_get_layout_offsets (label, &x_layout, &y_layout);
index = gail_misc_get_index_at_point_in_layout (widget,
gtk_label_get_layout (label),
x_layout, y_layout, x, y, coords);
if (index == -1)
{
if (coords == ATK_XY_WINDOW || coords == ATK_XY_SCREEN)
return g_utf8_strlen (label->text, -1);
return index;
}
else
return g_utf8_pointer_to_offset (label->text, label->text + index);
}
static AtkAttributeSet*
gail_label_get_run_attributes (AtkText *text,
gint offset,
gint *start_offset,
gint *end_offset)
{
GtkWidget *widget;
GtkLabel *label;
AtkAttributeSet *at_set = NULL;
GtkJustification justify;
GtkTextDirection dir;
widget = GTK_ACCESSIBLE (text)->widget;
if (widget == NULL)
/* State is defunct */
return NULL;
label = GTK_LABEL (widget);
/* Get values set for entire label, if any */
justify = gtk_label_get_justify (label);
if (justify != GTK_JUSTIFY_CENTER)
{
at_set = gail_misc_add_attribute (at_set,
ATK_TEXT_ATTR_JUSTIFICATION,
g_strdup (atk_text_attribute_get_value (ATK_TEXT_ATTR_JUSTIFICATION, justify)));
}
dir = gtk_widget_get_direction (widget);
if (dir == GTK_TEXT_DIR_RTL)
{
at_set = gail_misc_add_attribute (at_set,
ATK_TEXT_ATTR_DIRECTION,
g_strdup (atk_text_attribute_get_value (ATK_TEXT_ATTR_DIRECTION, dir)));
}
at_set = gail_misc_layout_get_run_attributes (at_set,
gtk_label_get_layout (label),
label->text,
offset,
start_offset,
end_offset);
return at_set;
}
static AtkAttributeSet*
gail_label_get_default_attributes (AtkText *text)
{
GtkWidget *widget;
GtkLabel *label;
AtkAttributeSet *at_set = NULL;
widget = GTK_ACCESSIBLE (text)->widget;
if (widget == NULL)
/* State is defunct */
return NULL;
label = GTK_LABEL (widget);
at_set = gail_misc_get_default_attributes (at_set,
gtk_label_get_layout (label),
widget);
return at_set;
}
static gunichar
gail_label_get_character_at_offset (AtkText *text,
gint offset)
{
GtkWidget *widget;
GtkLabel *label;
const gchar *string;
gchar *index;
widget = GTK_ACCESSIBLE (text)->widget;
if (widget == NULL)
/* State is defunct */
return '\0';
label = GTK_LABEL (widget);
string = gtk_label_get_text (label);
if (offset >= g_utf8_strlen (string, -1))
return '\0';
index = g_utf8_offset_to_pointer (string, offset);
return g_utf8_get_char (index);
}