forked from AuroraMiddleware/gtk
1006 lines
30 KiB
C
1006 lines
30 KiB
C
/* GAIL - The GNOME Accessibility Enabling Library
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* Copyright 2001, 2002, 2003 Sun Microsystems Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include "config.h"
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#include <string.h>
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#include <gtk/gtk.h>
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#include "gaillabel.h"
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#include "gailwindow.h"
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#include <libgail-util/gailmisc.h>
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static void gail_label_class_init (GailLabelClass *klass);
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static void gail_label_init (GailLabel *label);
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static void gail_label_real_initialize (AtkObject *obj,
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gpointer data);
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static void gail_label_real_notify_gtk (GObject *obj,
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GParamSpec *pspec);
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static void gail_label_map_gtk (GtkWidget *widget,
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gpointer data);
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static void gail_label_init_text_util (GailLabel *gail_label,
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GtkWidget *widget);
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static void gail_label_finalize (GObject *object);
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static void atk_text_interface_init (AtkTextIface *iface);
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/* atkobject.h */
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static const gchar* gail_label_get_name (AtkObject *accessible);
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static AtkStateSet* gail_label_ref_state_set (AtkObject *accessible);
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static AtkRelationSet* gail_label_ref_relation_set (AtkObject *accessible);
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/* atktext.h */
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static gchar* gail_label_get_text (AtkText *text,
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gint start_pos,
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gint end_pos);
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static gunichar gail_label_get_character_at_offset(AtkText *text,
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gint offset);
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static gchar* gail_label_get_text_before_offset(AtkText *text,
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gint offset,
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AtkTextBoundary boundary_type,
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gint *start_offset,
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gint *end_offset);
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static gchar* gail_label_get_text_at_offset (AtkText *text,
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gint offset,
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AtkTextBoundary boundary_type,
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gint *start_offset,
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gint *end_offset);
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static gchar* gail_label_get_text_after_offset (AtkText *text,
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gint offset,
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AtkTextBoundary boundary_type,
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gint *start_offset,
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gint *end_offset);
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static gint gail_label_get_character_count (AtkText *text);
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static gint gail_label_get_caret_offset (AtkText *text);
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static gboolean gail_label_set_caret_offset (AtkText *text,
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gint offset);
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static gint gail_label_get_n_selections (AtkText *text);
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static gchar* gail_label_get_selection (AtkText *text,
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gint selection_num,
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gint *start_offset,
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gint *end_offset);
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static gboolean gail_label_add_selection (AtkText *text,
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gint start_offset,
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gint end_offset);
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static gboolean gail_label_remove_selection (AtkText *text,
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gint selection_num);
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static gboolean gail_label_set_selection (AtkText *text,
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gint selection_num,
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gint start_offset,
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gint end_offset);
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static void gail_label_get_character_extents (AtkText *text,
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gint offset,
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gint *x,
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gint *y,
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gint *width,
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gint *height,
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AtkCoordType coords);
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static gint gail_label_get_offset_at_point (AtkText *text,
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gint x,
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gint y,
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AtkCoordType coords);
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static AtkAttributeSet* gail_label_get_run_attributes
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(AtkText *text,
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gint offset,
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gint *start_offset,
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gint *end_offset);
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static AtkAttributeSet* gail_label_get_default_attributes
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(AtkText *text);
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G_DEFINE_TYPE_WITH_CODE (GailLabel, gail_label, GAIL_TYPE_WIDGET,
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G_IMPLEMENT_INTERFACE (ATK_TYPE_TEXT, atk_text_interface_init))
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static void
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gail_label_class_init (GailLabelClass *klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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AtkObjectClass *class = ATK_OBJECT_CLASS (klass);
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GailWidgetClass *widget_class;
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gobject_class->finalize = gail_label_finalize;
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widget_class = (GailWidgetClass*)klass;
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widget_class->notify_gtk = gail_label_real_notify_gtk;
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class->get_name = gail_label_get_name;
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class->ref_state_set = gail_label_ref_state_set;
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class->ref_relation_set = gail_label_ref_relation_set;
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class->initialize = gail_label_real_initialize;
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}
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static void
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gail_label_init (GailLabel *label)
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{
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}
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static void
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gail_label_real_initialize (AtkObject *obj,
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gpointer data)
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{
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GtkWidget *widget;
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GailLabel *gail_label;
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ATK_OBJECT_CLASS (gail_label_parent_class)->initialize (obj, data);
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gail_label = GAIL_LABEL (obj);
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gail_label->window_create_handler = 0;
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gail_label->has_top_level = FALSE;
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gail_label->cursor_position = 0;
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gail_label->selection_bound = 0;
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gail_label->textutil = NULL;
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gail_label->label_length = 0;
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widget = GTK_WIDGET (data);
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if (gtk_widget_get_mapped (widget))
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gail_label_init_text_util (gail_label, widget);
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else
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g_signal_connect (widget,
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"map",
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G_CALLBACK (gail_label_map_gtk),
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gail_label);
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/*
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* Check whether ancestor of GtkLabel is a GtkButton and if so
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* set accessible parent for GailLabel
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*/
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while (widget != NULL)
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{
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widget = gtk_widget_get_parent (widget);
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if (GTK_IS_BUTTON (widget))
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{
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atk_object_set_parent (obj, gtk_widget_get_accessible (widget));
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break;
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}
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}
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if (GTK_IS_ACCEL_LABEL (widget))
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obj->role = ATK_ROLE_ACCEL_LABEL;
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else
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obj->role = ATK_ROLE_LABEL;
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}
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static void
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gail_label_map_gtk (GtkWidget *widget,
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gpointer data)
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{
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GailLabel *gail_label;
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gail_label = GAIL_LABEL (data);
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gail_label_init_text_util (gail_label, widget);
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}
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static void
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gail_label_init_text_util (GailLabel *gail_label,
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GtkWidget *widget)
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{
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GtkLabel *label;
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const gchar *label_text;
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if (gail_label->textutil == NULL)
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gail_label->textutil = gail_text_util_new ();
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label = GTK_LABEL (widget);
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label_text = gtk_label_get_text (label);
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gail_text_util_text_setup (gail_label->textutil, label_text);
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if (label_text == NULL)
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gail_label->label_length = 0;
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else
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gail_label->label_length = g_utf8_strlen (label_text, -1);
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}
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static void
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notify_name_change (AtkObject *atk_obj)
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{
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GtkLabel *label;
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GailLabel *gail_label;
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GtkWidget *widget;
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GObject *gail_obj;
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widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (atk_obj));
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if (widget == NULL)
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/*
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* State is defunct
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*/
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return;
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gail_obj = G_OBJECT (atk_obj);
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label = GTK_LABEL (widget);
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gail_label = GAIL_LABEL (atk_obj);
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if (gail_label->textutil == NULL)
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return;
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/*
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* Check whether the label has actually changed before emitting
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* notification.
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*/
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if (gail_label->textutil->buffer)
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{
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GtkTextIter start, end;
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const char *new_label;
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char *old_label;
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int same;
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gtk_text_buffer_get_start_iter (gail_label->textutil->buffer, &start);
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gtk_text_buffer_get_end_iter (gail_label->textutil->buffer, &end);
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old_label = gtk_text_buffer_get_text (gail_label->textutil->buffer, &start, &end, FALSE);
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new_label = gtk_label_get_text (label);
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same = strcmp (new_label, old_label);
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g_free (old_label);
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if (same == 0)
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return;
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}
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/* Create a delete text and an insert text signal */
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g_signal_emit_by_name (gail_obj, "text_changed::delete", 0,
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gail_label->label_length);
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gail_label_init_text_util (gail_label, widget);
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g_signal_emit_by_name (gail_obj, "text_changed::insert", 0,
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gail_label->label_length);
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if (atk_obj->name == NULL)
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/*
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* The label has changed so notify a change in accessible-name
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*/
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g_object_notify (gail_obj, "accessible-name");
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g_signal_emit_by_name (gail_obj, "visible_data_changed");
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}
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static void
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window_created (GObject *obj,
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gpointer data)
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{
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g_return_if_fail (GAIL_LABEL (data));
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notify_name_change (ATK_OBJECT (data));
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}
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static void
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gail_label_real_notify_gtk (GObject *obj,
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GParamSpec *pspec)
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{
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GtkWidget *widget = GTK_WIDGET (obj);
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AtkObject* atk_obj = gtk_widget_get_accessible (widget);
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GtkLabel *label;
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GailLabel *gail_label;
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GObject *gail_obj;
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AtkObject *top_level;
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AtkObject *temp_obj;
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gail_label = GAIL_LABEL (atk_obj);
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if (strcmp (pspec->name, "label") == 0)
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{
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/*
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* We may get a label change for a label which is not attached to an
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* application. We wait until the toplevel window is created before
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* emitting the notification.
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*
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* This happens when [Ctrl+]Alt+Tab is pressed in metacity
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*/
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if (!gail_label->has_top_level)
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{
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temp_obj = atk_obj;
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top_level = NULL;
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while (temp_obj)
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{
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top_level = temp_obj;
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temp_obj = atk_object_get_parent (top_level);
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}
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if (atk_object_get_role (top_level) != ATK_ROLE_APPLICATION)
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{
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if (gail_label->window_create_handler == 0 &&
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GAIL_IS_WINDOW (top_level))
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gail_label->window_create_handler = g_signal_connect_after (top_level, "create", G_CALLBACK (window_created), atk_obj);
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}
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else
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gail_label->has_top_level = TRUE;
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}
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if (gail_label->has_top_level)
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notify_name_change (atk_obj);
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}
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else if (strcmp (pspec->name, "cursor-position") == 0)
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{
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gint start, end, tmp;
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gboolean text_caret_moved = FALSE;
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gboolean selection_changed = FALSE;
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gail_obj = G_OBJECT (atk_obj);
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label = GTK_LABEL (widget);
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if (gail_label->selection_bound != -1 && gail_label->selection_bound < gail_label->cursor_position)
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{
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tmp = gail_label->selection_bound;
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gail_label->selection_bound = gail_label->cursor_position;
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gail_label->cursor_position = tmp;
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}
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if (gtk_label_get_selection_bounds (label, &start, &end))
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{
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if (start != gail_label->cursor_position ||
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end != gail_label->selection_bound)
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{
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if (end != gail_label->selection_bound)
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{
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gail_label->selection_bound = start;
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gail_label->cursor_position = end;
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}
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else
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{
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gail_label->selection_bound = end;
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gail_label->cursor_position = start;
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}
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text_caret_moved = TRUE;
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if (start != end)
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selection_changed = TRUE;
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}
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}
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else
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{
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if (gail_label->cursor_position != gail_label->selection_bound)
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selection_changed = TRUE;
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if (gtk_label_get_selectable (label))
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{
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if (gail_label->cursor_position != -1 && start != gail_label->cursor_position)
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text_caret_moved = TRUE;
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if (gail_label->selection_bound != -1 && end != gail_label->selection_bound)
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{
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text_caret_moved = TRUE;
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gail_label->cursor_position = end;
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gail_label->selection_bound = start;
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}
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else
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{
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gail_label->cursor_position = start;
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gail_label->selection_bound = end;
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}
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}
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else
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{
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/* GtkLabel has become non selectable */
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gail_label->cursor_position = 0;
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gail_label->selection_bound = 0;
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text_caret_moved = TRUE;
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}
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}
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if (text_caret_moved)
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g_signal_emit_by_name (gail_obj, "text_caret_moved",
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gail_label->cursor_position);
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if (selection_changed)
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g_signal_emit_by_name (gail_obj, "text_selection_changed");
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}
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else
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GAIL_WIDGET_CLASS (gail_label_parent_class)->notify_gtk (obj, pspec);
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}
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static void
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gail_label_finalize (GObject *object)
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{
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GailLabel *label = GAIL_LABEL (object);
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if (label->textutil)
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g_object_unref (label->textutil);
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G_OBJECT_CLASS (gail_label_parent_class)->finalize (object);
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}
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/* atkobject.h */
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static AtkStateSet*
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gail_label_ref_state_set (AtkObject *accessible)
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{
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AtkStateSet *state_set;
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GtkWidget *widget;
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state_set = ATK_OBJECT_CLASS (gail_label_parent_class)->ref_state_set (accessible);
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widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (accessible));
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if (widget == NULL)
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return state_set;
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atk_state_set_add_state (state_set, ATK_STATE_MULTI_LINE);
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return state_set;
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}
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AtkRelationSet*
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gail_label_ref_relation_set (AtkObject *obj)
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{
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GtkWidget *widget;
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AtkRelationSet *relation_set;
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g_return_val_if_fail (GAIL_IS_LABEL (obj), NULL);
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widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
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if (widget == NULL)
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/*
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* State is defunct
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*/
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return NULL;
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relation_set = ATK_OBJECT_CLASS (gail_label_parent_class)->ref_relation_set (obj);
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if (!atk_relation_set_contains (relation_set, ATK_RELATION_LABEL_FOR))
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{
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/*
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* Get the mnemonic widget
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*
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* The relation set is not updated if the mnemonic widget is changed
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*/
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GtkWidget *mnemonic_widget = gtk_label_get_mnemonic_widget (GTK_LABEL (widget));
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if (mnemonic_widget)
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{
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AtkObject *accessible_array[1];
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AtkRelation* relation;
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if (!gtk_widget_get_can_focus (mnemonic_widget))
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{
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/*
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* Handle the case where a GtkFileChooserButton is specified as the
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* mnemonic widget. use the combobox which is a child of the
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* GtkFileChooserButton as the mnemonic widget. See bug #359843.
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*/
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if (GTK_IS_BOX (mnemonic_widget))
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{
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GList *list, *tmpl;
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list = gtk_container_get_children (GTK_CONTAINER (mnemonic_widget));
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if (g_list_length (list) == 2)
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{
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tmpl = g_list_last (list);
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if (GTK_IS_COMBO_BOX(tmpl->data))
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{
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mnemonic_widget = GTK_WIDGET(tmpl->data);
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}
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}
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g_list_free (list);
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}
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}
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accessible_array[0] = gtk_widget_get_accessible (mnemonic_widget);
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relation = atk_relation_new (accessible_array, 1,
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ATK_RELATION_LABEL_FOR);
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atk_relation_set_add (relation_set, relation);
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/*
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* Unref the relation so that it is not leaked.
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*/
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g_object_unref (relation);
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}
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}
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return relation_set;
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}
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static const gchar*
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gail_label_get_name (AtkObject *accessible)
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{
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const gchar *name;
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g_return_val_if_fail (GAIL_IS_LABEL (accessible), NULL);
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name = ATK_OBJECT_CLASS (gail_label_parent_class)->get_name (accessible);
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if (name != NULL)
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return name;
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else
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{
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/*
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|
* Get the text on the label
|
|
*/
|
|
GtkWidget *widget;
|
|
|
|
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (accessible));
|
|
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_get_widget (GTK_ACCESSIBLE (text));
|
|
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_get_widget (GTK_ACCESSIBLE (text));
|
|
|
|
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_get_widget (GTK_ACCESSIBLE (text));
|
|
|
|
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_get_widget (GTK_ACCESSIBLE (text));
|
|
|
|
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_get_widget (GTK_ACCESSIBLE (text));
|
|
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_get_widget (GTK_ACCESSIBLE (text));
|
|
if (widget == NULL)
|
|
/* State is defunct */
|
|
return 0;
|
|
|
|
label = GTK_LABEL (widget);
|
|
|
|
if (gtk_label_get_selectable (label) &&
|
|
offset >= 0 &&
|
|
offset <= g_utf8_strlen (gtk_label_get_text (label), -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_get_widget (GTK_ACCESSIBLE (text));
|
|
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_get_widget (GTK_ACCESSIBLE (text));
|
|
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_get_widget (GTK_ACCESSIBLE (text));
|
|
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_get_widget (GTK_ACCESSIBLE (text));
|
|
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_get_widget (GTK_ACCESSIBLE (text));
|
|
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;
|
|
const gchar *label_text;
|
|
gint index, x_layout, y_layout;
|
|
|
|
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text));
|
|
|
|
if (widget == NULL)
|
|
/* State is defunct */
|
|
return;
|
|
|
|
label = GTK_LABEL (widget);
|
|
|
|
gtk_label_get_layout_offsets (label, &x_layout, &y_layout);
|
|
label_text = gtk_label_get_text (label);
|
|
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;
|
|
const gchar *label_text;
|
|
gint index, x_layout, y_layout;
|
|
|
|
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text));
|
|
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);
|
|
label_text = gtk_label_get_text (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_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_get_widget (GTK_ACCESSIBLE (text));
|
|
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),
|
|
gtk_label_get_text (label),
|
|
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_get_widget (GTK_ACCESSIBLE (text));
|
|
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_get_widget (GTK_ACCESSIBLE (text));
|
|
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);
|
|
}
|