/* GAIL - The GNOME Accessibility Implementation 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>
#include <gtk/gtk.h>
#include "gailstatusbar.h"
#include <libgail-util/gailmisc.h>
static void gail_statusbar_class_init (GailStatusbarClass *klass);
static void gail_statusbar_init (GailStatusbar *bar);
static const gchar* gail_statusbar_get_name (AtkObject *obj);
static gint gail_statusbar_get_n_children (AtkObject *obj);
static AtkObject* gail_statusbar_ref_child (AtkObject *obj,
gint i);
static void gail_statusbar_real_initialize (AtkObject *obj,
gpointer data);
static gint gail_statusbar_notify (GObject *obj,
GParamSpec *pspec,
gpointer user_data);
static void gail_statusbar_finalize (GObject *object);
static void gail_statusbar_init_textutil (GailStatusbar *statusbar,
GtkWidget *label);
/* atktext.h */
static void atk_text_interface_init (AtkTextIface *iface);
static gchar* gail_statusbar_get_text (AtkText *text,
gint start_pos,
gint end_pos);
static gunichar gail_statusbar_get_character_at_offset
(AtkText *text,
gint offset);
static gchar* gail_statusbar_get_text_before_offset
(AtkText *text,
gint offset,
AtkTextBoundary boundary_type,
gint *start_offset,
gint *end_offset);
static gchar* gail_statusbar_get_text_at_offset(AtkText *text,
gint offset,
AtkTextBoundary boundary_type,
gint *start_offset,
gint *end_offset);
static gchar* gail_statusbar_get_text_after_offset
(AtkText *text,
gint offset,
AtkTextBoundary boundary_type,
gint *start_offset,
gint *end_offset);
static gint gail_statusbar_get_character_count (AtkText *text);
static void gail_statusbar_get_character_extents
(AtkText *text,
gint offset,
gint *x,
gint *y,
gint *width,
gint *height,
AtkCoordType coords);
static gint gail_statusbar_get_offset_at_point(AtkText *text,
gint x,
gint y,
AtkCoordType coords);
static AtkAttributeSet* gail_statusbar_get_run_attributes
(AtkText *text,
gint offset,
gint *start_offset,
gint *end_offset);
static AtkAttributeSet* gail_statusbar_get_default_attributes
(AtkText *text);
static GtkWidget* get_label_from_statusbar (GtkWidget *statusbar);
G_DEFINE_TYPE_WITH_CODE (GailStatusbar, gail_statusbar, GAIL_TYPE_CONTAINER,
G_IMPLEMENT_INTERFACE (ATK_TYPE_TEXT, atk_text_interface_init))
static void
gail_statusbar_class_init (GailStatusbarClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
AtkObjectClass *class = ATK_OBJECT_CLASS (klass);
GailContainerClass *container_class;
container_class = (GailContainerClass*)klass;
gobject_class->finalize = gail_statusbar_finalize;
class->get_name = gail_statusbar_get_name;
class->get_n_children = gail_statusbar_get_n_children;
class->ref_child = gail_statusbar_ref_child;
class->initialize = gail_statusbar_real_initialize;
/*
* As we report the statusbar as having no children we are not interested
* in add and remove signals
*/
container_class->add_gtk = NULL;
container_class->remove_gtk = NULL;
}
static void
gail_statusbar_init (GailStatusbar *bar)
{
}
static const gchar*
gail_statusbar_get_name (AtkObject *obj)
{
const gchar* name;
g_return_val_if_fail (GAIL_IS_STATUSBAR (obj), NULL);
name = ATK_OBJECT_CLASS (gail_statusbar_parent_class)->get_name (obj);
if (name != NULL)
return name;
else
{
/*
* Get the text on the label
*/
GtkWidget *widget;
GtkWidget *label;
widget = GTK_ACCESSIBLE (obj)->widget;
if (widget == NULL)
/*
* State is defunct
*/
return NULL;
g_return_val_if_fail (GTK_IS_STATUSBAR (widget), NULL);
label = get_label_from_statusbar (widget);
if (GTK_IS_LABEL (label))
return gtk_label_get_label (GTK_LABEL (label));
else
return NULL;
}
}
static gint
gail_statusbar_get_n_children (AtkObject *obj)
{
GtkWidget *widget;
GList *children;
gint count = 0;
widget = GTK_ACCESSIBLE (obj)->widget;
if (widget == NULL)
return 0;
children = gtk_container_get_children (GTK_CONTAINER (widget));
if (children != NULL)
{
count = g_list_length (children);
g_list_free (children);
}
return count;
}
static AtkObject*
gail_statusbar_ref_child (AtkObject *obj,
gint i)
{
GList *children, *tmp_list;
AtkObject *accessible;
GtkWidget *widget;
g_return_val_if_fail ((i >= 0), NULL);
widget = GTK_ACCESSIBLE (obj)->widget;
if (widget == NULL)
return NULL;
children = gtk_container_get_children (GTK_CONTAINER (widget));
if (children == NULL)
return NULL;
tmp_list = g_list_nth (children, i);
if (!tmp_list)
{
g_list_free (children);
return NULL;
}
accessible = gtk_widget_get_accessible (GTK_WIDGET (tmp_list->data));
g_list_free (children);
g_object_ref (accessible);
return accessible;
}
static void
gail_statusbar_real_initialize (AtkObject *obj,
gpointer data)
{
GailStatusbar *statusbar = GAIL_STATUSBAR (obj);
GtkWidget *label;
ATK_OBJECT_CLASS (gail_statusbar_parent_class)->initialize (obj, data);
/*
* We get notified of changes to the label
*/
label = get_label_from_statusbar (GTK_WIDGET (data));
if (GTK_IS_LABEL (label))
{
gail_statusbar_init_textutil (statusbar, label);
}
obj->role = ATK_ROLE_STATUSBAR;
}
static gint
gail_statusbar_notify (GObject *obj,
GParamSpec *pspec,
gpointer user_data)
{
AtkObject *atk_obj = ATK_OBJECT (user_data);
GtkLabel *label;
GailStatusbar *statusbar;
if (strcmp (pspec->name, "label") == 0)
{
const gchar* label_text;
label = GTK_LABEL (obj);
label_text = gtk_label_get_text (label);
statusbar = GAIL_STATUSBAR (atk_obj);
gail_text_util_text_setup (statusbar->textutil, label_text);
if (atk_obj->name == NULL)
{
/*
* The label has changed so notify a change in accessible-name
*/
g_object_notify (G_OBJECT (atk_obj), "accessible-name");
}
/*
* The label is the only property which can be changed
*/
g_signal_emit_by_name (atk_obj, "visible_data_changed");
}
return 1;
}
static void
gail_statusbar_init_textutil (GailStatusbar *statusbar,
GtkWidget *label)
{
const gchar *label_text;
statusbar->textutil = gail_text_util_new ();
label_text = gtk_label_get_text (GTK_LABEL (label));
gail_text_util_text_setup (statusbar->textutil, label_text);
g_signal_connect (label,
"notify",
(GCallback) gail_statusbar_notify,
statusbar);
}
static void
gail_statusbar_finalize (GObject *object)
{
GailStatusbar *statusbar = GAIL_STATUSBAR (object);
if (statusbar->textutil)
{
g_object_unref (statusbar->textutil);
}
G_OBJECT_CLASS (gail_statusbar_parent_class)->finalize (object);
}
/* atktext.h */
static void
atk_text_interface_init (AtkTextIface *iface)
{
iface->get_text = gail_statusbar_get_text;
iface->get_character_at_offset = gail_statusbar_get_character_at_offset;
iface->get_text_before_offset = gail_statusbar_get_text_before_offset;
iface->get_text_at_offset = gail_statusbar_get_text_at_offset;
iface->get_text_after_offset = gail_statusbar_get_text_after_offset;
iface->get_character_count = gail_statusbar_get_character_count;
iface->get_character_extents = gail_statusbar_get_character_extents;
iface->get_offset_at_point = gail_statusbar_get_offset_at_point;
iface->get_run_attributes = gail_statusbar_get_run_attributes;
iface->get_default_attributes = gail_statusbar_get_default_attributes;
}
static gchar*
gail_statusbar_get_text (AtkText *text,
gint start_pos,
gint end_pos)
{
GtkWidget *widget;
GtkWidget *label;
GailStatusbar *statusbar;
const gchar *label_text;
widget = GTK_ACCESSIBLE (text)->widget;
if (widget == NULL)
/* State is defunct */
return NULL;
label = get_label_from_statusbar (widget);
if (!GTK_IS_LABEL (label))
return NULL;
statusbar = GAIL_STATUSBAR (text);
if (!statusbar->textutil)
gail_statusbar_init_textutil (statusbar, label);
label_text = gtk_label_get_text (GTK_LABEL (label));
if (label_text == NULL)
return NULL;
else
{
return gail_text_util_get_substring (statusbar->textutil,
start_pos, end_pos);
}
}
static gchar*
gail_statusbar_get_text_before_offset (AtkText *text,
gint offset,
AtkTextBoundary boundary_type,
gint *start_offset,
gint *end_offset)
{
GtkWidget *widget;
GtkWidget *label;
GailStatusbar *statusbar;
widget = GTK_ACCESSIBLE (text)->widget;
if (widget == NULL)
/* State is defunct */
return NULL;
/* Get label */
label = get_label_from_statusbar (widget);
if (!GTK_IS_LABEL(label))
return NULL;
statusbar = GAIL_STATUSBAR (text);
if (!statusbar->textutil)
gail_statusbar_init_textutil (statusbar, label);
return gail_text_util_get_text (statusbar->textutil,
gtk_label_get_layout (GTK_LABEL (label)), GAIL_BEFORE_OFFSET,
boundary_type, offset, start_offset, end_offset);
}
static gchar*
gail_statusbar_get_text_at_offset (AtkText *text,
gint offset,
AtkTextBoundary boundary_type,
gint *start_offset,
gint *end_offset)
{
GtkWidget *widget;
GtkWidget *label;
GailStatusbar *statusbar;
widget = GTK_ACCESSIBLE (text)->widget;
if (widget == NULL)
/* State is defunct */
return NULL;
/* Get label */
label = get_label_from_statusbar (widget);
if (!GTK_IS_LABEL(label))
return NULL;
statusbar = GAIL_STATUSBAR (text);
if (!statusbar->textutil)
gail_statusbar_init_textutil (statusbar, label);
return gail_text_util_get_text (statusbar->textutil,
gtk_label_get_layout (GTK_LABEL (label)), GAIL_AT_OFFSET,
boundary_type, offset, start_offset, end_offset);
}
static gchar*
gail_statusbar_get_text_after_offset (AtkText *text,
gint offset,
AtkTextBoundary boundary_type,
gint *start_offset,
gint *end_offset)
{
GtkWidget *widget;
GtkWidget *label;
GailStatusbar *statusbar;
widget = GTK_ACCESSIBLE (text)->widget;
if (widget == NULL)
{
/* State is defunct */
return NULL;
}
/* Get label */
label = get_label_from_statusbar (widget);
if (!GTK_IS_LABEL(label))
return NULL;
statusbar = GAIL_STATUSBAR (text);
if (!statusbar->textutil)
gail_statusbar_init_textutil (statusbar, label);
return gail_text_util_get_text (statusbar->textutil,
gtk_label_get_layout (GTK_LABEL (label)), GAIL_AFTER_OFFSET,
boundary_type, offset, start_offset, end_offset);
}
static gint
gail_statusbar_get_character_count (AtkText *text)
{
GtkWidget *widget;
GtkWidget *label;
widget = GTK_ACCESSIBLE (text)->widget;
if (widget == NULL)
/* State is defunct */
return 0;
label = get_label_from_statusbar (widget);
if (!GTK_IS_LABEL(label))
return 0;
return g_utf8_strlen (gtk_label_get_text (GTK_LABEL (label)), -1);
}
static void
gail_statusbar_get_character_extents (AtkText *text,
gint offset,
gint *x,
gint *y,
gint *width,
gint *height,
AtkCoordType coords)
{
GtkWidget *widget;
GtkWidget *label;
PangoRectangle char_rect;
gint index, x_layout, y_layout;
const gchar *label_text;
widget = GTK_ACCESSIBLE (text)->widget;
if (widget == NULL)
/* State is defunct */
return;
label = get_label_from_statusbar (widget);
if (!GTK_IS_LABEL(label))
return;
gtk_label_get_layout_offsets (GTK_LABEL (label), &x_layout, &y_layout);
label_text = gtk_label_get_text (GTK_LABEL (label));
index = g_utf8_offset_to_pointer (label_text, offset) - label_text;
pango_layout_index_to_pos (gtk_label_get_layout (GTK_LABEL (label)), index, &char_rect);
gail_misc_get_extents_from_pango_rectangle (label, &char_rect,
x_layout, y_layout, x, y, width, height, coords);
}
static gint
gail_statusbar_get_offset_at_point (AtkText *text,
gint x,
gint y,
AtkCoordType coords)
{
GtkWidget *widget;
GtkWidget *label;
gint index, x_layout, y_layout;
const gchar *label_text;
widget = GTK_ACCESSIBLE (text)->widget;
if (widget == NULL)
/* State is defunct */
return -1;
label = get_label_from_statusbar (widget);
if (!GTK_IS_LABEL(label))
return -1;
gtk_label_get_layout_offsets (GTK_LABEL (label), &x_layout, &y_layout);
index = gail_misc_get_index_at_point_in_layout (label,
gtk_label_get_layout (GTK_LABEL (label)),
x_layout, y_layout, x, y, coords);
label_text = gtk_label_get_text (GTK_LABEL (label));
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_statusbar_get_run_attributes (AtkText *text,
gint offset,
gint *start_offset,
gint *end_offset)
{
GtkWidget *widget;
GtkWidget *label;
AtkAttributeSet *at_set = NULL;
GtkJustification justify;
GtkTextDirection dir;
widget = GTK_ACCESSIBLE (text)->widget;
if (widget == NULL)
/* State is defunct */
return NULL;
label = get_label_from_statusbar (widget);
if (!GTK_IS_LABEL(label))
return NULL;
/* Get values set for entire label, if any */
justify = gtk_label_get_justify (GTK_LABEL (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 (label);
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 (GTK_LABEL (label)),
(gchar *) gtk_label_get_text (GTK_LABEL (label)),
offset,
start_offset,
end_offset);
return at_set;
}
static AtkAttributeSet*
gail_statusbar_get_default_attributes (AtkText *text)
{
GtkWidget *widget;
GtkWidget *label;
AtkAttributeSet *at_set = NULL;
widget = GTK_ACCESSIBLE (text)->widget;
if (widget == NULL)
/* State is defunct */
return NULL;
label = get_label_from_statusbar (widget);
if (!GTK_IS_LABEL(label))
return NULL;
at_set = gail_misc_get_default_attributes (at_set,
gtk_label_get_layout (GTK_LABEL (label)),
widget);
return at_set;
}
static gunichar
gail_statusbar_get_character_at_offset (AtkText *text,
gint offset)
{
GtkWidget *widget;
GtkWidget *label;
const gchar *string;
gchar *index;
widget = GTK_ACCESSIBLE (text)->widget;
if (widget == NULL)
/* State is defunct */
return '\0';
label = get_label_from_statusbar (widget);
if (!GTK_IS_LABEL(label))
return '\0';
string = gtk_label_get_text (GTK_LABEL (label));
if (offset >= g_utf8_strlen (string, -1))
return '\0';
index = g_utf8_offset_to_pointer (string, offset);
return g_utf8_get_char (index);
}
static GtkWidget*
get_label_from_statusbar (GtkWidget *statusbar)
{
return GTK_STATUSBAR (statusbar)->label;
}