forked from AuroraMiddleware/gtk
742 lines
26 KiB
C
742 lines
26 KiB
C
/* GTK+ - accessibility implementations
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* Copyright 2001 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, see <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <gtk/gtk.h>
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#include "../gtkpango.h"
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#include "gtktextcellaccessible.h"
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#include "gtkcontainercellaccessible.h"
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#include "gtkcellaccessibleparent.h"
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#include "gtkstylecontextprivate.h"
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struct _GtkTextCellAccessiblePrivate
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{
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gchar *cell_text;
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gint caret_pos;
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gint cell_length;
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PangoLayout *layout;
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};
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static const gchar* gtk_text_cell_accessible_get_name (AtkObject *atk_obj);
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/* atktext.h */
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static gchar* gtk_text_cell_accessible_get_text (AtkText *text,
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gint start_pos,
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gint end_pos);
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static gunichar gtk_text_cell_accessible_get_character_at_offset (AtkText *text,
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gint offset);
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static gchar* gtk_text_cell_accessible_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* gtk_text_cell_accessible_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* gtk_text_cell_accessible_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 gtk_text_cell_accessible_get_character_count (AtkText *text);
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static gint gtk_text_cell_accessible_get_caret_offset (AtkText *text);
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static gboolean gtk_text_cell_accessible_set_caret_offset (AtkText *text,
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gint offset);
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static void gtk_text_cell_accessible_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 gtk_text_cell_accessible_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* gtk_text_cell_accessible_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* gtk_text_cell_accessible_get_default_attributes
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(AtkText *text);
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static GtkWidget* get_widget (GtkTextCellAccessible *cell);
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static PangoLayout* create_pango_layout (GtkTextCellAccessible *cell);
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static void add_attr (PangoAttrList *attr_list,
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PangoAttribute *attr);
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/* Misc */
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static void gtk_text_cell_accessible_update_cache (GtkCellAccessible *cell,
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gboolean emit_signal);
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static void atk_text_interface_init (AtkTextIface *iface);
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G_DEFINE_TYPE_WITH_CODE (GtkTextCellAccessible, gtk_text_cell_accessible, GTK_TYPE_RENDERER_CELL_ACCESSIBLE,
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G_ADD_PRIVATE (GtkTextCellAccessible)
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G_IMPLEMENT_INTERFACE (ATK_TYPE_TEXT, atk_text_interface_init))
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static AtkStateSet *
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gtk_text_cell_accessible_ref_state_set (AtkObject *accessible)
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{
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AtkStateSet *state_set;
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state_set = ATK_OBJECT_CLASS (gtk_text_cell_accessible_parent_class)->ref_state_set (accessible);
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atk_state_set_add_state (state_set, ATK_STATE_SINGLE_LINE);
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return state_set;
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}
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static void
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gtk_text_cell_accessible_finalize (GObject *object)
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{
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GtkTextCellAccessible *text_cell = GTK_TEXT_CELL_ACCESSIBLE (object);
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g_free (text_cell->priv->cell_text);
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if (text_cell->priv->layout)
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g_object_unref (text_cell->priv->layout);
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G_OBJECT_CLASS (gtk_text_cell_accessible_parent_class)->finalize (object);
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}
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static const gchar *
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gtk_text_cell_accessible_get_name (AtkObject *atk_obj)
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{
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GtkTextCellAccessible *text_cell = GTK_TEXT_CELL_ACCESSIBLE (atk_obj);
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if (atk_obj->name)
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return atk_obj->name;
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return text_cell->priv->cell_text;
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}
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static void
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gtk_text_cell_accessible_update_cache (GtkCellAccessible *cell,
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gboolean emit_signal)
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{
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GtkTextCellAccessible *text_cell = GTK_TEXT_CELL_ACCESSIBLE (cell);
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AtkObject *obj = ATK_OBJECT (cell);
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gint text_length;
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gchar *text;
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GtkCellRenderer *renderer;
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if (text_cell->priv->layout)
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g_object_unref (text_cell->priv->layout);
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text_cell->priv->layout = create_pango_layout (text_cell);
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g_object_get (cell, "renderer", &renderer, NULL);
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g_object_get (renderer, "text", &text, NULL);
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g_object_unref (renderer);
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if (text == NULL)
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text = g_strdup ("");
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text_length = g_utf8_strlen (text, -1);
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if (g_strcmp0 (text_cell->priv->cell_text, text) != 0)
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{
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if (text_cell->priv->cell_length && emit_signal)
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{
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g_signal_emit_by_name (cell, "text-changed::delete",
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0, text_cell->priv->cell_length);
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}
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g_free (text_cell->priv->cell_text);
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text_cell->priv->cell_text = g_strdup (text);
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text_cell->priv->cell_length = text_length;
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if (text_length && emit_signal)
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{
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g_signal_emit_by_name (cell, "text-changed::insert",
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0, text_cell->priv->cell_length);
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}
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if (obj->name == NULL && emit_signal)
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g_object_notify (G_OBJECT (obj), "accessible-name");
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}
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g_free (text);
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}
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static void
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gtk_text_cell_accessible_class_init (GtkTextCellAccessibleClass *klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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AtkObjectClass *atk_object_class = ATK_OBJECT_CLASS (klass);
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GtkCellAccessibleClass *cell_class = GTK_CELL_ACCESSIBLE_CLASS (klass);
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cell_class->update_cache = gtk_text_cell_accessible_update_cache;
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atk_object_class->get_name = gtk_text_cell_accessible_get_name;
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atk_object_class->ref_state_set = gtk_text_cell_accessible_ref_state_set;
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gobject_class->finalize = gtk_text_cell_accessible_finalize;
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}
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static void
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gtk_text_cell_accessible_init (GtkTextCellAccessible *text_cell)
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{
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text_cell->priv = gtk_text_cell_accessible_get_instance_private (text_cell);
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}
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static gchar *
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gtk_text_cell_accessible_get_text (AtkText *atk_text,
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gint start_pos,
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gint end_pos)
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{
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gchar *text;
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text = GTK_TEXT_CELL_ACCESSIBLE (atk_text)->priv->cell_text;
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if (text)
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return g_utf8_substring (text, start_pos, end_pos > -1 ? end_pos : g_utf8_strlen (text, -1));
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else
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return g_strdup ("");
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}
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static gchar *
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gtk_text_cell_accessible_get_text_before_offset (AtkText *atk_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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{
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GtkTextCellAccessible *text_cell = GTK_TEXT_CELL_ACCESSIBLE (atk_text);
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gchar *text;
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text = _gtk_pango_get_text_before (text_cell->priv->layout, boundary_type, offset, start_offset, end_offset);
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return text;
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}
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static gchar *
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gtk_text_cell_accessible_get_text_at_offset (AtkText *atk_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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{
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GtkTextCellAccessible *text_cell = GTK_TEXT_CELL_ACCESSIBLE (atk_text);
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gchar *text;
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text = _gtk_pango_get_text_at (text_cell->priv->layout, boundary_type, offset, start_offset, end_offset);
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return text;
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}
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static gchar *
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gtk_text_cell_accessible_get_text_after_offset (AtkText *atk_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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{
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GtkTextCellAccessible *text_cell = GTK_TEXT_CELL_ACCESSIBLE (atk_text);
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gchar *text;
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text = _gtk_pango_get_text_after (text_cell->priv->layout, boundary_type, offset, start_offset, end_offset);
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return text;
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}
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static gint
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gtk_text_cell_accessible_get_character_count (AtkText *text)
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{
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if (GTK_TEXT_CELL_ACCESSIBLE (text)->priv->cell_text != NULL)
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return GTK_TEXT_CELL_ACCESSIBLE (text)->priv->cell_length;
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else
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return 0;
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}
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static gint
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gtk_text_cell_accessible_get_caret_offset (AtkText *text)
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{
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return GTK_TEXT_CELL_ACCESSIBLE (text)->priv->caret_pos;
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}
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static gboolean
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gtk_text_cell_accessible_set_caret_offset (AtkText *text,
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gint offset)
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{
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GtkTextCellAccessible *text_cell = GTK_TEXT_CELL_ACCESSIBLE (text);
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if (text_cell->priv->cell_text == NULL)
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return FALSE;
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else
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{
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/* Only set the caret within the bounds and if it is to a new position. */
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if (offset >= 0 &&
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offset <= text_cell->priv->cell_length &&
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offset != text_cell->priv->caret_pos)
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{
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text_cell->priv->caret_pos = offset;
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/* emit the signal */
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g_signal_emit_by_name (text, "text-caret-moved", offset);
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return TRUE;
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}
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else
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return FALSE;
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}
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}
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static AtkAttributeSet *
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gtk_text_cell_accessible_get_run_attributes (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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{
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AtkAttributeSet *attrib_set = NULL;
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GtkTextCellAccessible *text_cell = GTK_TEXT_CELL_ACCESSIBLE (text);
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attrib_set = _gtk_pango_get_run_attributes (NULL, text_cell->priv->layout, offset, start_offset, end_offset);
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return attrib_set;
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}
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static AtkAttributeSet *
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add_attribute (AtkAttributeSet *attributes,
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AtkTextAttribute attr,
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const gchar *value)
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{
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AtkAttribute *at;
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at = g_new (AtkAttribute, 1);
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at->name = g_strdup (atk_text_attribute_get_name (attr));
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at->value = g_strdup (value);
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return g_slist_prepend (attributes, at);
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}
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static AtkAttributeSet *
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gtk_text_cell_accessible_get_default_attributes (AtkText *text)
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{
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AtkAttributeSet *attrib_set = NULL;
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GtkTextCellAccessible *text_cell = GTK_TEXT_CELL_ACCESSIBLE (text);
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GtkWidget *widget;
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widget = get_widget (GTK_TEXT_CELL_ACCESSIBLE (text));
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attrib_set = add_attribute (attrib_set, ATK_TEXT_ATTR_DIRECTION,
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atk_text_attribute_get_value (ATK_TEXT_ATTR_DIRECTION,
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gtk_widget_get_direction (widget)));
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attrib_set = _gtk_pango_get_default_attributes (NULL, text_cell->priv->layout);
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attrib_set = _gtk_style_context_get_attributes (attrib_set,
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gtk_widget_get_style_context (widget));
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return attrib_set;
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}
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GtkWidget *
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get_widget (GtkTextCellAccessible *text)
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{
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AtkObject *parent;
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parent = atk_object_get_parent (ATK_OBJECT (text));
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if (GTK_IS_CONTAINER_CELL_ACCESSIBLE (parent))
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parent = atk_object_get_parent (parent);
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return gtk_accessible_get_widget (GTK_ACCESSIBLE (parent));
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}
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/* This function is used by gtk_text_cell_accessible_get_offset_at_point()
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* and gtk_text_cell_accessible_get_character_extents(). There is no
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* cached PangoLayout so we must create a temporary one using this function.
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*/
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static PangoLayout *
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create_pango_layout (GtkTextCellAccessible *text)
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{
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GdkRGBA *foreground_rgba;
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PangoAttrList *attr_list, *attributes;
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PangoLayout *layout;
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PangoUnderline uline, underline;
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PangoFontMask mask;
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PangoFontDescription *font_desc;
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gboolean foreground_set, strikethrough_set, strikethrough;
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gboolean scale_set, underline_set, rise_set;
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gchar *renderer_text;
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gdouble scale;
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gint rise;
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GtkRendererCellAccessible *gail_renderer;
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GtkCellRendererText *gtk_renderer;
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gail_renderer = GTK_RENDERER_CELL_ACCESSIBLE (text);
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g_object_get (gail_renderer, "renderer", >k_renderer, NULL);
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g_object_get (gtk_renderer,
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"text", &renderer_text,
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"attributes", &attributes,
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"foreground-set", &foreground_set,
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"foreground-rgba", &foreground_rgba,
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"strikethrough-set", &strikethrough_set,
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"strikethrough", &strikethrough,
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"font-desc", &font_desc,
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"scale-set", &scale_set,
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"scale", &scale,
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"underline-set", &underline_set,
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"underline", &underline,
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"rise-set", &rise_set,
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"rise", &rise,
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NULL);
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g_object_unref (gtk_renderer);
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layout = gtk_widget_create_pango_layout (get_widget (text), renderer_text);
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if (attributes)
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attr_list = pango_attr_list_copy (attributes);
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else
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attr_list = pango_attr_list_new ();
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if (foreground_set)
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{
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add_attr (attr_list, pango_attr_foreground_new (foreground_rgba->red * 65535,
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foreground_rgba->green * 65535,
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foreground_rgba->blue * 65535));
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}
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if (strikethrough_set)
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add_attr (attr_list,
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pango_attr_strikethrough_new (strikethrough));
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mask = pango_font_description_get_set_fields (font_desc);
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if (mask & PANGO_FONT_MASK_FAMILY)
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add_attr (attr_list,
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pango_attr_family_new (pango_font_description_get_family (font_desc)));
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if (mask & PANGO_FONT_MASK_STYLE)
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add_attr (attr_list, pango_attr_style_new (pango_font_description_get_style (font_desc)));
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if (mask & PANGO_FONT_MASK_VARIANT)
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add_attr (attr_list, pango_attr_variant_new (pango_font_description_get_variant (font_desc)));
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if (mask & PANGO_FONT_MASK_WEIGHT)
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add_attr (attr_list, pango_attr_weight_new (pango_font_description_get_weight (font_desc)));
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if (mask & PANGO_FONT_MASK_STRETCH)
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add_attr (attr_list, pango_attr_stretch_new (pango_font_description_get_stretch (font_desc)));
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if (mask & PANGO_FONT_MASK_SIZE)
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add_attr (attr_list, pango_attr_size_new (pango_font_description_get_size (font_desc)));
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if (scale_set && scale != 1.0)
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add_attr (attr_list, pango_attr_scale_new (scale));
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if (underline_set)
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uline = underline;
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else
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uline = PANGO_UNDERLINE_NONE;
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if (uline != PANGO_UNDERLINE_NONE)
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add_attr (attr_list,
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pango_attr_underline_new (underline));
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if (rise_set)
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add_attr (attr_list, pango_attr_rise_new (rise));
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pango_layout_set_attributes (layout, attr_list);
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pango_layout_set_width (layout, -1);
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pango_attr_list_unref (attr_list);
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pango_font_description_free (font_desc);
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pango_attr_list_unref (attributes);
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g_free (renderer_text);
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gdk_rgba_free (foreground_rgba);
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return layout;
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}
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static void
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add_attr (PangoAttrList *attr_list,
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PangoAttribute *attr)
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{
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attr->start_index = 0;
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attr->end_index = G_MAXINT;
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pango_attr_list_insert (attr_list, attr);
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}
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static void
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get_origins (GtkWidget *widget,
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gint *x_window,
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gint *y_window,
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gint *x_toplevel,
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gint *y_toplevel)
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{
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GdkWindow *window;
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window = gtk_widget_get_window (widget);
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gdk_window_get_origin (window, x_window, y_window);
|
|
window = gdk_window_get_toplevel (gtk_widget_get_window (widget));
|
|
gdk_window_get_origin (window, x_toplevel, y_toplevel);
|
|
|
|
if (GTK_IS_TREE_VIEW (widget))
|
|
{
|
|
gtk_tree_view_convert_widget_to_bin_window_coords (GTK_TREE_VIEW (widget),
|
|
*x_window, *y_window,
|
|
x_window, y_window);
|
|
gtk_tree_view_convert_widget_to_bin_window_coords (GTK_TREE_VIEW (widget),
|
|
*x_toplevel, *y_toplevel,
|
|
x_toplevel, y_toplevel);
|
|
}
|
|
}
|
|
|
|
static void
|
|
gtk_text_cell_accessible_get_character_extents (AtkText *text,
|
|
gint offset,
|
|
gint *x,
|
|
gint *y,
|
|
gint *width,
|
|
gint *height,
|
|
AtkCoordType coords)
|
|
{
|
|
GtkRendererCellAccessible *gail_renderer;
|
|
GtkRequisition min_size;
|
|
GtkCellRendererText *gtk_renderer;
|
|
GdkRectangle rendered_rect;
|
|
GtkWidget *widget;
|
|
AtkObject *parent;
|
|
PangoRectangle char_rect;
|
|
GtkTextCellAccessible *text_cell = GTK_TEXT_CELL_ACCESSIBLE (text);
|
|
gchar *renderer_text;
|
|
gfloat xalign, yalign;
|
|
gint x_offset, y_offset, index;
|
|
gint xpad, ypad;
|
|
gint x_window, y_window, x_toplevel, y_toplevel;
|
|
|
|
if (!GTK_TEXT_CELL_ACCESSIBLE (text)->priv->cell_text)
|
|
{
|
|
*x = *y = *height = *width = 0;
|
|
return;
|
|
}
|
|
if (offset < 0 || offset >= GTK_TEXT_CELL_ACCESSIBLE (text)->priv->cell_length)
|
|
{
|
|
*x = *y = *height = *width = 0;
|
|
return;
|
|
}
|
|
gail_renderer = GTK_RENDERER_CELL_ACCESSIBLE (text);
|
|
g_object_get (gail_renderer, "renderer", >k_renderer, NULL);
|
|
g_object_get (gtk_renderer, "text", &renderer_text, NULL);
|
|
if (renderer_text == NULL)
|
|
{
|
|
g_object_unref (gtk_renderer);
|
|
return;
|
|
}
|
|
|
|
parent = atk_object_get_parent (ATK_OBJECT (text));
|
|
if (GTK_IS_CONTAINER_CELL_ACCESSIBLE (parent))
|
|
parent = atk_object_get_parent (parent);
|
|
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (parent));
|
|
g_return_if_fail (GTK_IS_CELL_ACCESSIBLE_PARENT (parent));
|
|
gtk_cell_accessible_parent_get_cell_area (GTK_CELL_ACCESSIBLE_PARENT (parent),
|
|
GTK_CELL_ACCESSIBLE (text),
|
|
&rendered_rect);
|
|
|
|
gtk_cell_renderer_get_preferred_size (GTK_CELL_RENDERER (gtk_renderer),
|
|
widget,
|
|
&min_size, NULL);
|
|
|
|
gtk_cell_renderer_get_alignment (GTK_CELL_RENDERER (gtk_renderer), &xalign, &yalign);
|
|
if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
|
|
xalign = 1.0 - xalign;
|
|
x_offset = MAX (0, xalign * (rendered_rect.width - min_size.width));
|
|
y_offset = MAX (0, yalign * (rendered_rect.height - min_size.height));
|
|
|
|
index = g_utf8_offset_to_pointer (renderer_text, offset) - renderer_text;
|
|
pango_layout_index_to_pos (text_cell->priv->layout, index, &char_rect);
|
|
|
|
gtk_cell_renderer_get_padding (GTK_CELL_RENDERER (gtk_renderer), &xpad, &ypad);
|
|
|
|
get_origins (widget, &x_window, &y_window, &x_toplevel, &y_toplevel);
|
|
|
|
*x = (char_rect.x / PANGO_SCALE) + x_offset + rendered_rect.x + xpad + x_window;
|
|
*y = (char_rect.y / PANGO_SCALE) + y_offset + rendered_rect.y + ypad + y_window;
|
|
*height = char_rect.height / PANGO_SCALE;
|
|
*width = char_rect.width / PANGO_SCALE;
|
|
|
|
if (coords == ATK_XY_WINDOW)
|
|
{
|
|
*x -= x_toplevel;
|
|
*y -= y_toplevel;
|
|
}
|
|
else if (coords != ATK_XY_SCREEN)
|
|
{
|
|
*x = 0;
|
|
*y = 0;
|
|
*height = 0;
|
|
*width = 0;
|
|
}
|
|
|
|
g_free (renderer_text);
|
|
g_object_unref (gtk_renderer);
|
|
}
|
|
|
|
static gint
|
|
gtk_text_cell_accessible_get_offset_at_point (AtkText *text,
|
|
gint x,
|
|
gint y,
|
|
AtkCoordType coords)
|
|
{
|
|
AtkObject *parent;
|
|
GtkRendererCellAccessible *gail_renderer;
|
|
GtkCellRendererText *gtk_renderer;
|
|
GtkRequisition min_size;
|
|
GtkWidget *widget;
|
|
GdkRectangle rendered_rect;
|
|
GtkTextCellAccessible *text_cell = GTK_TEXT_CELL_ACCESSIBLE (text);
|
|
gchar *renderer_text;
|
|
gfloat xalign, yalign;
|
|
gint x_offset, y_offset, index;
|
|
gint xpad, ypad;
|
|
gint x_window, y_window, x_toplevel, y_toplevel;
|
|
gint x_temp, y_temp;
|
|
gboolean ret;
|
|
|
|
if (!GTK_TEXT_CELL_ACCESSIBLE (text)->priv->cell_text)
|
|
return -1;
|
|
|
|
gail_renderer = GTK_RENDERER_CELL_ACCESSIBLE (text);
|
|
g_object_get (gail_renderer, "renderer", >k_renderer, NULL);
|
|
parent = atk_object_get_parent (ATK_OBJECT (text));
|
|
|
|
g_object_get (gtk_renderer, "text", &renderer_text, NULL);
|
|
if (text == NULL)
|
|
{
|
|
g_object_unref (gtk_renderer);
|
|
g_free (renderer_text);
|
|
return -1;
|
|
}
|
|
|
|
if (GTK_IS_CONTAINER_CELL_ACCESSIBLE (parent))
|
|
parent = atk_object_get_parent (parent);
|
|
|
|
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (parent));
|
|
|
|
g_return_val_if_fail (GTK_IS_CELL_ACCESSIBLE_PARENT (parent), -1);
|
|
gtk_cell_accessible_parent_get_cell_area (GTK_CELL_ACCESSIBLE_PARENT (parent),
|
|
GTK_CELL_ACCESSIBLE (text),
|
|
&rendered_rect);
|
|
|
|
gtk_cell_renderer_get_preferred_size (GTK_CELL_RENDERER (gtk_renderer),
|
|
widget,
|
|
&min_size, NULL);
|
|
gtk_cell_renderer_get_alignment (GTK_CELL_RENDERER (gtk_renderer), &xalign, &yalign);
|
|
if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
|
|
xalign = 1.0 - xalign;
|
|
x_offset = MAX (0, xalign * (rendered_rect.width - min_size.width));
|
|
y_offset = MAX (0, yalign * (rendered_rect.height - min_size.height));
|
|
|
|
gtk_cell_renderer_get_padding (GTK_CELL_RENDERER (gtk_renderer), &xpad, &ypad);
|
|
|
|
get_origins (widget, &x_window, &y_window, &x_toplevel, &y_toplevel);
|
|
|
|
x_temp = x - (x_offset + rendered_rect.x + xpad) - x_window;
|
|
y_temp = y - (y_offset + rendered_rect.y + ypad) - y_window;
|
|
if (coords == ATK_XY_WINDOW)
|
|
{
|
|
x_temp += x_toplevel;
|
|
y_temp += y_toplevel;
|
|
}
|
|
else if (coords != ATK_XY_SCREEN)
|
|
index = -1;
|
|
|
|
ret = pango_layout_xy_to_index (text_cell->priv->layout,
|
|
x_temp * PANGO_SCALE,
|
|
y_temp * PANGO_SCALE,
|
|
&index, NULL);
|
|
if (!ret)
|
|
{
|
|
if (x_temp < 0 || y_temp < 0)
|
|
index = 0;
|
|
else
|
|
index = -1;
|
|
}
|
|
|
|
g_object_unref (gtk_renderer);
|
|
|
|
if (index == -1)
|
|
{
|
|
if (coords == ATK_XY_WINDOW || coords == ATK_XY_SCREEN)
|
|
{
|
|
glong length;
|
|
|
|
length = g_utf8_strlen (renderer_text, -1);
|
|
g_free (renderer_text);
|
|
|
|
return length;
|
|
}
|
|
|
|
g_free (renderer_text);
|
|
|
|
return index;
|
|
}
|
|
else
|
|
{
|
|
glong offset;
|
|
|
|
offset = g_utf8_pointer_to_offset (renderer_text,
|
|
renderer_text + index);
|
|
g_free (renderer_text);
|
|
|
|
return offset;
|
|
}
|
|
}
|
|
|
|
static gunichar
|
|
gtk_text_cell_accessible_get_character_at_offset (AtkText *text,
|
|
gint offset)
|
|
{
|
|
gchar *index;
|
|
gchar *string;
|
|
|
|
string = GTK_TEXT_CELL_ACCESSIBLE(text)->priv->cell_text;
|
|
|
|
if (!string)
|
|
return '\0';
|
|
|
|
if (offset >= g_utf8_strlen (string, -1))
|
|
return '\0';
|
|
|
|
index = g_utf8_offset_to_pointer (string, offset);
|
|
|
|
return g_utf8_get_char (index);
|
|
}
|
|
|
|
static void
|
|
atk_text_interface_init (AtkTextIface *iface)
|
|
{
|
|
iface->get_text = gtk_text_cell_accessible_get_text;
|
|
iface->get_character_at_offset = gtk_text_cell_accessible_get_character_at_offset;
|
|
iface->get_text_before_offset = gtk_text_cell_accessible_get_text_before_offset;
|
|
iface->get_text_at_offset = gtk_text_cell_accessible_get_text_at_offset;
|
|
iface->get_text_after_offset = gtk_text_cell_accessible_get_text_after_offset;
|
|
iface->get_character_count = gtk_text_cell_accessible_get_character_count;
|
|
iface->get_caret_offset = gtk_text_cell_accessible_get_caret_offset;
|
|
iface->set_caret_offset = gtk_text_cell_accessible_set_caret_offset;
|
|
iface->get_run_attributes = gtk_text_cell_accessible_get_run_attributes;
|
|
iface->get_default_attributes = gtk_text_cell_accessible_get_default_attributes;
|
|
iface->get_character_extents = gtk_text_cell_accessible_get_character_extents;
|
|
iface->get_offset_at_point = gtk_text_cell_accessible_get_offset_at_point;
|
|
}
|