gtk/modules/other/gail/gailhtmlboxtext.c

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/* GAIL - The GNOME Accessibility Implementation Library
* Copyright 2001 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 "gailhtmlboxtext.h"
static void gail_html_box_text_class_init (GailHtmlBoxTextClass *klass);
static void gail_html_box_text_text_interface_init (AtkTextIface *iface);
static gchar* gail_html_box_text_get_text (AtkText *text,
gint start_offset,
gint end_offset);
static gchar* gail_html_box_text_get_text_after_offset
(AtkText *text,
gint offset,
AtkTextBoundary boundary_type,
gint *start_offset,
gint *end_offset);
static gchar* gail_html_box_text_get_text_at_offset (AtkText *text,
gint offset,
AtkTextBoundary boundary_type,
gint *start_offset,
gint *end_offset);
static gchar* gail_html_box_text_get_text_before_offset
(AtkText *text,
gint offset,
AtkTextBoundary boundary_type,
gint *start_offset,
gint *end_offset);
static gunichar gail_html_box_text_get_character_at_offset
(AtkText *text,
gint offset);
static gint gail_html_box_text_get_character_count (AtkText *text);
static gint gail_html_box_text_get_caret_offset (AtkText *text);
static gboolean gail_html_box_text_set_caret_offset (AtkText *text,
gint offset);
static gint gail_html_box_text_get_offset_at_point (AtkText *text,
gint x,
gint y,
AtkCoordType coords);
static void gail_html_box_text_get_character_extents (AtkText *text,
gint offset,
gint *x,
gint *y,
gint *width,
gint *height,
AtkCoordType coords);
static AtkAttributeSet*
gail_html_box_text_get_run_attributes (AtkText *text,
gint offset,
gint *start_offset,
gint *end_offset);
static AtkAttributeSet*
gail_html_box_text_get_default_attributes (AtkText *text);
static gint gail_html_box_text_get_n_selections (AtkText *text);
static gchar* gail_html_box_text_get_selection (AtkText *text,
gint selection_num,
gint *start_pos,
gint *end_pos);
static gboolean gail_html_box_text_add_selection (AtkText *text,
gint start_pos,
gint end_pos);
static gboolean gail_html_box_text_remove_selection (AtkText *text,
gint selection_num);
static gboolean gail_html_box_text_set_selection (AtkText *text,
gint selection_num,
gint start_pos,
gint end_pos);
static AtkAttributeSet*
add_to_attr_set (AtkAttributeSet *attrib_set,
GtkTextAttributes *attrs,
AtkTextAttribute attr);
static gchar* get_text_near_offset (AtkText *text,
GailOffsetType function,
AtkTextBoundary boundary_type,
gint offset,
gint *start_offset,
gint *end_offset);
G_DEFINE_TYPE_WITH_CODE (GailHtmlBoxText, gail_html_box_text, GAIL_TYPE_HTML_BOX,
G_IMPLEMENT_INTERFACE (ATK_TYPE_TEXT, gail_html_box_text_text_interface_init))
AtkObject*
gail_html_box_text_new (GObject *obj)
{
gpointer object;
AtkObject *atk_object;
GailHtmlBoxText *gail_text;
g_return_val_if_fail (HTML_IS_BOX_TEXT (obj), NULL);
object = g_object_new (GAIL_TYPE_HTML_BOX_TEXT, NULL);
atk_object = ATK_OBJECT (object);
gail_text = GAIL_HTML_BOX_TEXT (object);
atk_object_initialize (atk_object, obj);
gail_text->texthelper = gail_text_helper_new ();
#if 0
gail_text_helper_text_setup (gail_text->texthelper,
HTML_BOX_TEXT (obj)->master->text);
#endif
atk_object->role = ATK_ROLE_TEXT;
return atk_object;
}
static void
gail_html_box_text_class_init (GailHtmlBoxTextClass *klass)
{
}
static void
gail_html_box_text_text_interface_init (AtkTextIface *iface)
{
iface->get_text = gail_html_box_text_get_text;
iface->get_text_after_offset = gail_html_box_text_get_text_after_offset;
iface->get_text_at_offset = gail_html_box_text_get_text_at_offset;
iface->get_text_before_offset = gail_html_box_text_get_text_before_offset;
iface->get_character_at_offset = gail_html_box_text_get_character_at_offset;
iface->get_character_count = gail_html_box_text_get_character_count;
iface->get_caret_offset = gail_html_box_text_get_caret_offset;
iface->set_caret_offset = gail_html_box_text_set_caret_offset;
iface->get_offset_at_point = gail_html_box_text_get_offset_at_point;
iface->get_character_extents = gail_html_box_text_get_character_extents;
iface->get_n_selections = gail_html_box_text_get_n_selections;
iface->get_selection = gail_html_box_text_get_selection;
iface->add_selection = gail_html_box_text_add_selection;
iface->remove_selection = gail_html_box_text_remove_selection;
iface->set_selection = gail_html_box_text_set_selection;
iface->get_run_attributes = gail_html_box_text_get_run_attributes;
iface->get_default_attributes = gail_html_box_text_get_default_attributes;
}
static gchar*
gail_html_box_text_get_text (AtkText *text,
gint start_offset,
gint end_offset)
{
GailHtmlBoxText *gail_text;
GtkTextBuffer *buffer;
GtkTextIter start, end;
g_return_val_if_fail (GAIL_IS_HTML_BOX_TEXT (text), NULL);
gail_text = GAIL_HTML_BOX_TEXT (text);
g_return_val_if_fail (gail_text->texthelper, NULL);
buffer = gail_text->texthelper->buffer;
gtk_text_buffer_get_iter_at_offset (buffer, &start, start_offset);
gtk_text_buffer_get_iter_at_offset (buffer, &end, end_offset);
return gtk_text_buffer_get_text (buffer, &start, &end, FALSE);
}
static gchar*
gail_html_box_text_get_text_after_offset (AtkText *text,
gint offset,
AtkTextBoundary boundary_type,
gint *start_offset,
gint *end_offset)
{
return get_text_near_offset (text, GAIL_AFTER_OFFSET,
boundary_type, offset,
start_offset, end_offset);
}
static gchar*
gail_html_box_text_get_text_at_offset (AtkText *text,
gint offset,
AtkTextBoundary boundary_type,
gint *start_offset,
gint *end_offset)
{
return get_text_near_offset (text, GAIL_AT_OFFSET,
boundary_type, offset,
start_offset, end_offset);
}
static gchar*
gail_html_box_text_get_text_before_offset (AtkText *text,
gint offset,
AtkTextBoundary boundary_type,
gint *start_offset,
gint *end_offset)
{
return get_text_near_offset (text, GAIL_BEFORE_OFFSET,
boundary_type, offset,
start_offset, end_offset);
}
static gunichar
gail_html_box_text_get_character_at_offset (AtkText *text,
gint offset)
{
GailHtmlBoxText *gail_item;
GtkTextIter start, end;
GtkTextBuffer *buffer;
gchar *string;
gchar *index;
g_return_val_if_fail (GAIL_IS_HTML_BOX_TEXT (text), 0);
gail_item = GAIL_HTML_BOX_TEXT (text);
buffer = gail_item->texthelper->buffer;
gtk_text_buffer_get_start_iter (buffer, &start);
gtk_text_buffer_get_end_iter (buffer, &end);
string = gtk_text_buffer_get_text (buffer, &start, &end, FALSE);
index = g_utf8_offset_to_pointer (string, offset);
g_free (string);
return g_utf8_get_char (index);
}
static gint
gail_html_box_text_get_character_count (AtkText *text)
{
GtkTextBuffer *buffer;
GailHtmlBoxText *gail_text;
g_return_val_if_fail (GAIL_IS_HTML_BOX_TEXT (text), 0);
gail_text = GAIL_HTML_BOX_TEXT (text);
g_return_val_if_fail (gail_text->texthelper, 0);
buffer = gail_text->texthelper->buffer;
return gtk_text_buffer_get_char_count (buffer);
}
static gint
gail_html_box_text_get_caret_offset (AtkText *text)
{
GailHtmlBoxText *gail_text;
GtkTextBuffer *buffer;
GtkTextMark *cursor_mark;
GtkTextIter cursor_itr;
g_return_val_if_fail (GAIL_IS_HTML_BOX_TEXT (text), 0);
gail_text = GAIL_HTML_BOX_TEXT (text);
g_return_val_if_fail (gail_text->texthelper, 0);
buffer = gail_text->texthelper->buffer;
cursor_mark = gtk_text_buffer_get_insert (buffer);
gtk_text_buffer_get_iter_at_mark (buffer, &cursor_itr, cursor_mark);
return gtk_text_iter_get_offset (&cursor_itr);
}
static gboolean
gail_html_box_text_set_caret_offset (AtkText *text,
gint offset)
{
GailHtmlBoxText *gail_text;
GtkTextBuffer *buffer;
GtkTextIter pos_itr;
g_return_val_if_fail (GAIL_IS_HTML_BOX_TEXT (text), FALSE);
gail_text = GAIL_HTML_BOX_TEXT (text);
g_return_val_if_fail (gail_text->texthelper, FALSE);
buffer = gail_text->texthelper->buffer;
gtk_text_buffer_get_iter_at_offset (buffer, &pos_itr, offset);
gtk_text_buffer_move_mark_by_name (buffer, "insert", &pos_itr);
return TRUE;
}
static gint
gail_html_box_text_get_offset_at_point (AtkText *text,
gint x,
gint y,
AtkCoordType coords)
{
return -1;
}
static void
gail_html_box_text_get_character_extents (AtkText *text,
gint offset,
gint *x,
gint *y,
gint *width,
gint *height,
AtkCoordType coords)
{
return;
}
static AtkAttributeSet*
gail_html_box_text_get_run_attributes (AtkText *text,
gint offset,
gint *start_offset,
gint *end_offset)
{
return NULL;
}
static AtkAttributeSet*
gail_html_box_text_get_default_attributes (AtkText *text)
{
return NULL;
}
static gint
gail_html_box_text_get_n_selections (AtkText *text)
{
return 0;
}
static gchar*
gail_html_box_text_get_selection (AtkText *text,
gint selection_num,
gint *start_pos,
gint *end_pos)
{
return NULL;
}
static gboolean
gail_html_box_text_add_selection (AtkText *text,
gint start_pos,
gint end_pos)
{
return FALSE;
}
static gboolean
gail_html_box_text_remove_selection (AtkText *text,
gint selection_num)
{
return FALSE;
}
static gboolean
gail_html_box_text_set_selection (AtkText *text,
gint selection_num,
gint start_pos,
gint end_pos)
{
return FALSE;
}
static AtkAttributeSet*
add_to_attr_set (AtkAttributeSet *attrib_set,
GtkTextAttributes *attrs,
AtkTextAttribute attr)
{
gchar *value;
switch (attr)
{
case ATK_TEXT_ATTR_LEFT_MARGIN:
value = g_strdup_printf ("%i", attrs->left_margin);
break;
case ATK_TEXT_ATTR_RIGHT_MARGIN:
value = g_strdup_printf ("%i", attrs->right_margin);
break;
case ATK_TEXT_ATTR_INDENT:
value = g_strdup_printf ("%i", attrs->indent);
break;
case ATK_TEXT_ATTR_INVISIBLE:
value = g_strdup (atk_text_attribute_get_value (attr, attrs->invisible));
break;
case ATK_TEXT_ATTR_EDITABLE:
value = g_strdup (atk_text_attribute_get_value (attr, attrs->editable));
break;
case ATK_TEXT_ATTR_PIXELS_ABOVE_LINES:
value = g_strdup_printf ("%i", attrs->pixels_above_lines);
break;
case ATK_TEXT_ATTR_PIXELS_BELOW_LINES:
value = g_strdup_printf ("%i", attrs->pixels_below_lines);
break;
case ATK_TEXT_ATTR_PIXELS_INSIDE_WRAP:
value = g_strdup_printf ("%i", attrs->pixels_inside_wrap);
break;
case ATK_TEXT_ATTR_BG_FULL_HEIGHT:
value = g_strdup (atk_text_attribute_get_value (attr, attrs->bg_full_height));
break;
case ATK_TEXT_ATTR_RISE:
value = g_strdup_printf ("%i", attrs->appearance.rise);
break;
case ATK_TEXT_ATTR_UNDERLINE:
value = g_strdup (atk_text_attribute_get_value (attr, attrs->appearance.underline));
break;
case ATK_TEXT_ATTR_STRIKETHROUGH:
value = g_strdup (atk_text_attribute_get_value (attr, attrs->appearance.strikethrough));
break;
case ATK_TEXT_ATTR_SIZE:
value = g_strdup_printf ("%i",
pango_font_description_get_size (attrs->font));
break;
case ATK_TEXT_ATTR_SCALE:
value = g_strdup_printf ("%g", attrs->font_scale);
break;
case ATK_TEXT_ATTR_WEIGHT:
value = g_strdup_printf ("%d",
pango_font_description_get_weight (attrs->font));
break;
case ATK_TEXT_ATTR_LANGUAGE:
value = g_strdup ((gchar *)(attrs->language));
break;
case ATK_TEXT_ATTR_FAMILY_NAME:
value = g_strdup (pango_font_description_get_family (attrs->font));
break;
case ATK_TEXT_ATTR_BG_COLOR:
value = g_strdup_printf ("%u,%u,%u",
attrs->appearance.bg_color.red,
attrs->appearance.bg_color.green,
attrs->appearance.bg_color.blue);
break;
case ATK_TEXT_ATTR_FG_COLOR:
value = g_strdup_printf ("%u,%u,%u",
attrs->appearance.fg_color.red,
attrs->appearance.fg_color.green,
attrs->appearance.fg_color.blue);
break;
case ATK_TEXT_ATTR_BG_STIPPLE:
value = g_strdup (atk_text_attribute_get_value (attr, attrs->appearance.bg_stipple ? 1 : 0));
break;
case ATK_TEXT_ATTR_FG_STIPPLE:
value = g_strdup (atk_text_attribute_get_value (attr, attrs->appearance.fg_stipple ? 1 : 0));
break;
case ATK_TEXT_ATTR_WRAP_MODE:
value = g_strdup (atk_text_attribute_get_value (attr, attrs->wrap_mode));
break;
case ATK_TEXT_ATTR_DIRECTION:
value = g_strdup (atk_text_attribute_get_value (attr, attrs->direction));
break;
case ATK_TEXT_ATTR_JUSTIFICATION:
value = g_strdup (atk_text_attribute_get_value (attr, attrs->justification));
break;
case ATK_TEXT_ATTR_STRETCH:
value = g_strdup (atk_text_attribute_get_value (attr,
pango_font_description_get_stretch (attrs->font)));
break;
case ATK_TEXT_ATTR_VARIANT:
value = g_strdup (atk_text_attribute_get_value (attr,
pango_font_description_get_variant (attrs->font)));
break;
case ATK_TEXT_ATTR_STYLE:
value = g_strdup (atk_text_attribute_get_value (attr,
pango_font_description_get_style (attrs->font)));
break;
default:
value = NULL;
break;
}
return gail_text_helper_add_attribute (attrib_set,
attr,
value);
}
static gchar*
get_text_near_offset (AtkText *text,
GailOffsetType function,
AtkTextBoundary boundary_type,
gint offset,
gint *start_offset,
gint *end_offset)
{
return gail_text_helper_get_text (GAIL_HTML_BOX_TEXT (text)->texthelper, NULL,
function, boundary_type, offset,
start_offset, end_offset);
}