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77ec8774a0
mutter/clutter/cally/cally-text.c
Emmanuele Bassi 77ec8774a0 WARNING: Massive revert commit 
Revert all the work that happened on the master branch.

Sadly, this is the only way to merge the current development branch back
into master.

It is now abundantly clear that I merged the 1.99 branch far too soon,
and that Clutter 2.0 won't happen any time soon, if at all.

Since having the development happen on a separate branch throws a lot of
people into confusion, let's undo the clutter-1.99 → master merge, and
move back the development of Clutter to the master branch.

In order to do so, we need to do some surgery to the Git repository.

First, we do a massive revert in a single commit of all that happened
since the switch to 1.99 and the API version bump done with the
89a2862b05 commit. The history is too long
to be reverted commit by commit without being extremely messy.
2015-01-03 20:34:20 +00:00

2335 lines
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/* CALLY - The Clutter Accessibility Implementation Library
*
* Copyright (C) 2009 Igalia, S.L.
*
* Author: Alejandro Piñeiro Iglesias <apinheiro@igalia.com>
*
* Some parts are based on GailLabel, GailEntry, GailTextView from GAIL
* GAIL - The GNOME Accessibility Implementation Library
* Copyright 2001, 2002, 2003 Sun Microsystems Inc.
*
* Implementation of atk_text_get_text_[before/at/after]_offset
* copied from gtkpango.c, part of GTK+ project
* Copyright (c) 2010 Red Hat, 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.
*/
/**
* SECTION:cally-text
* @short_description: Implementation of the ATK interfaces for a #ClutterText
* @see_also: #ClutterText
*
* #CallyText implements the required ATK interfaces of
* #ClutterText, #AtkText and #AtkEditableText
*
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "cally-text.h"
#include "cally-actor-private.h"
#include "clutter-main.h"
static void cally_text_finalize (GObject *obj);
/* AtkObject */
static void cally_text_real_initialize (AtkObject *obj,
gpointer data);
static AtkStateSet* cally_text_ref_state_set (AtkObject *obj);
/* atkaction */
static void _cally_text_activate_action (CallyActor *cally_actor);
static void _check_activate_action (CallyText *cally_text,
ClutterText *clutter_text);
/* AtkText */
static void cally_text_text_interface_init (AtkTextIface *iface);
static gchar* cally_text_get_text (AtkText *text,
gint start_offset,
gint end_offset);
static gunichar cally_text_get_character_at_offset (AtkText *text,
gint offset);
static gchar* cally_text_get_text_before_offset (AtkText *text,
gint offset,
AtkTextBoundary boundary_type,
gint *start_offset,
gint *end_offset);
static gchar* cally_text_get_text_at_offset (AtkText *text,
gint offset,
AtkTextBoundary boundary_type,
gint *start_offset,
gint *end_offset);
static gchar* cally_text_get_text_after_offset (AtkText *text,
gint offset,
AtkTextBoundary boundary_type,
gint *start_offset,
gint *end_offset);
static gint cally_text_get_caret_offset (AtkText *text);
static gboolean cally_text_set_caret_offset (AtkText *text,
gint offset);
static gint cally_text_get_character_count (AtkText *text);
static gint cally_text_get_n_selections (AtkText *text);
static gchar* cally_text_get_selection (AtkText *text,
gint selection_num,
gint *start_offset,
gint *end_offset);
static gboolean cally_text_add_selection (AtkText *text,
gint start_offset,
gint end_offset);
static gboolean cally_text_remove_selection (AtkText *text,
gint selection_num);
static gboolean cally_text_set_selection (AtkText *text,
gint selection_num,
gint start_offset,
gint end_offset);
static AtkAttributeSet* cally_text_get_run_attributes (AtkText *text,
gint offset,
gint *start_offset,
gint *end_offset);
static AtkAttributeSet* cally_text_get_default_attributes (AtkText *text);
static void cally_text_get_character_extents (AtkText *text,
gint offset,
gint *x,
gint *y,
gint *width,
gint *height,
AtkCoordType coords);
static gint cally_text_get_offset_at_point (AtkText *text,
gint x,
gint y,
AtkCoordType coords);
static void _cally_text_get_selection_bounds (ClutterText *clutter_text,
gint *start_offset,
gint *end_offset);
static void _cally_text_insert_text_cb (ClutterText *clutter_text,
gchar *new_text,
gint new_text_length,
gint *position,
gpointer data);
static void _cally_text_delete_text_cb (ClutterText *clutter_text,
gint start_pos,
gint end_pos,
gpointer data);
static gboolean _idle_notify_insert (gpointer data);
static void _notify_insert (CallyText *cally_text);
static void _notify_delete (CallyText *cally_text);
/* AtkEditableText */
static void cally_text_editable_text_interface_init (AtkEditableTextIface *iface);
static void cally_text_set_text_contents (AtkEditableText *text,
const gchar *string);
static void cally_text_insert_text (AtkEditableText *text,
const gchar *string,
gint length,
gint *position);
static void cally_text_delete_text (AtkEditableText *text,
gint start_pos,
gint end_pos);
/* CallyActor */
static void cally_text_notify_clutter (GObject *obj,
GParamSpec *pspec);
static gboolean _check_for_selection_change (CallyText *cally_text,
ClutterText *clutter_text);
/* Misc functions */
static AtkAttributeSet* _cally_misc_add_attribute (AtkAttributeSet *attrib_set,
AtkTextAttribute attr,
gchar *value);
static AtkAttributeSet* _cally_misc_layout_get_run_attributes (AtkAttributeSet *attrib_set,
ClutterText *clutter_text,
gint offset,
gint *start_offset,
gint *end_offset);
static AtkAttributeSet* _cally_misc_layout_get_default_attributes (AtkAttributeSet *attrib_set,
ClutterText *text);
static int _cally_misc_get_index_at_point (ClutterText *clutter_text,
gint x,
gint y,
AtkCoordType coords);
G_DEFINE_TYPE_WITH_CODE (CallyText,
cally_text,
CALLY_TYPE_ACTOR,
G_IMPLEMENT_INTERFACE (ATK_TYPE_TEXT,
cally_text_text_interface_init)
G_IMPLEMENT_INTERFACE (ATK_TYPE_EDITABLE_TEXT,
cally_text_editable_text_interface_init));
#define CALLY_TEXT_GET_PRIVATE(obj) \
(G_TYPE_INSTANCE_GET_PRIVATE ((obj), CALLY_TYPE_TEXT, CallyTextPrivate))
struct _CallyTextPrivate
{
/* Cached ClutterText values*/
gint cursor_position;
gint selection_bound;
/* text_changed::insert stuff */
const gchar *signal_name_insert;
gint position_insert;
gint length_insert;
guint insert_idle_handler;
/* text_changed::delete stuff */
const gchar *signal_name_delete;
gint position_delete;
gint length_delete;
/* action */
guint activate_action_id;
};
static void
cally_text_class_init (CallyTextClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
AtkObjectClass *class = ATK_OBJECT_CLASS (klass);
CallyActorClass *cally_class = CALLY_ACTOR_CLASS (klass);
gobject_class->finalize = cally_text_finalize;
class->initialize = cally_text_real_initialize;
class->ref_state_set = cally_text_ref_state_set;
cally_class->notify_clutter = cally_text_notify_clutter;
g_type_class_add_private (gobject_class, sizeof (CallyTextPrivate));
}
static void
cally_text_init (CallyText *cally_text)
{
CallyTextPrivate *priv = CALLY_TEXT_GET_PRIVATE (cally_text);
cally_text->priv = priv;
priv->cursor_position = 0;
priv->selection_bound = 0;
priv->signal_name_insert = NULL;
priv->position_insert = -1;
priv->length_insert = -1;
priv->insert_idle_handler = 0;
priv->signal_name_delete = NULL;
priv->position_delete = -1;
priv->length_delete = -1;
priv->activate_action_id = 0;
}
static void
cally_text_finalize (GObject *obj)
{
CallyText *cally_text = CALLY_TEXT (obj);
/* g_object_unref (cally_text->priv->textutil); */
/* cally_text->priv->textutil = NULL; */
if (cally_text->priv->insert_idle_handler)
{
g_source_remove (cally_text->priv->insert_idle_handler);
cally_text->priv->insert_idle_handler = 0;
}
G_OBJECT_CLASS (cally_text_parent_class)->finalize (obj);
}
/**
* cally_text_new:
* @actor: a #ClutterActor
*
* Creates a new #CallyText for the given @actor. @actor must be a
* #ClutterText.
*
* Return value: the newly created #AtkObject
*
* Since: 1.4
*/
AtkObject*
cally_text_new (ClutterActor *actor)
{
GObject *object = NULL;
AtkObject *accessible = NULL;
g_return_val_if_fail (CLUTTER_IS_TEXT (actor), NULL);
object = g_object_new (CALLY_TYPE_TEXT, NULL);
accessible = ATK_OBJECT (object);
atk_object_initialize (accessible, actor);
return accessible;
}
/* atkobject.h */
static void
cally_text_real_initialize(AtkObject *obj,
gpointer data)
{
ClutterText *clutter_text = NULL;
CallyText *cally_text = NULL;
ATK_OBJECT_CLASS (cally_text_parent_class)->initialize (obj, data);
g_return_if_fail (CLUTTER_TEXT (data));
cally_text = CALLY_TEXT (obj);
clutter_text = CLUTTER_TEXT (data);
cally_text->priv->cursor_position = clutter_text_get_cursor_position (clutter_text);
cally_text->priv->selection_bound = clutter_text_get_selection_bound (clutter_text);
g_signal_connect (clutter_text, "insert-text",
G_CALLBACK (_cally_text_insert_text_cb),
cally_text);
g_signal_connect (clutter_text, "delete-text",
G_CALLBACK (_cally_text_delete_text_cb),
cally_text);
_check_activate_action (cally_text, clutter_text);
if (clutter_text_get_password_char (clutter_text) != 0)
atk_object_set_role (obj, ATK_ROLE_PASSWORD_TEXT);
else
atk_object_set_role (obj, ATK_ROLE_TEXT);
}
static AtkStateSet*
cally_text_ref_state_set (AtkObject *obj)
{
AtkStateSet *result = NULL;
ClutterActor *actor = NULL;
result = ATK_OBJECT_CLASS (cally_text_parent_class)->ref_state_set (obj);
actor = CALLY_GET_CLUTTER_ACTOR (obj);
if (actor == NULL)
return result;
if (clutter_text_get_editable (CLUTTER_TEXT (actor)))
atk_state_set_add_state (result, ATK_STATE_EDITABLE);
if (clutter_text_get_selectable (CLUTTER_TEXT (actor)))
atk_state_set_add_state (result, ATK_STATE_SELECTABLE_TEXT);
return result;
}
/***** pango stuff ****
*
* FIXME: all this pango related code used to implement
* atk_text_get_text_[before/at/after]_offset was copied from GTK, and
* should be on a common library (like pango itself).
*
*********************/
/*
* _gtk_pango_move_chars:
* @layout: a #PangoLayout
* @offset: a character offset in @layout
* @count: the number of characters to move from @offset
*
* Returns the position that is @count characters from the
* given @offset. @count may be positive or negative.
*
* For the purpose of this function, characters are defined
* by what Pango considers cursor positions.
*
* Returns: the new position
*/
static gint
_gtk_pango_move_chars (PangoLayout *layout,
gint offset,
gint count)
{
const PangoLogAttr *attrs;
gint n_attrs;
attrs = pango_layout_get_log_attrs_readonly (layout, &n_attrs);
while (count > 0 && offset < n_attrs - 1)
{
do
offset++;
while (offset < n_attrs - 1 && !attrs[offset].is_cursor_position);
count--;
}
while (count < 0 && offset > 0)
{
do
offset--;
while (offset > 0 && !attrs[offset].is_cursor_position);
count++;
}
return offset;
}
/*
* _gtk_pango_move_words:
* @layout: a #PangoLayout
* @offset: a character offset in @layout
* @count: the number of words to move from @offset
*
* Returns the position that is @count words from the
* given @offset. @count may be positive or negative.
*
* If @count is positive, the returned position will
* be a word end, otherwise it will be a word start.
* See the Pango documentation for details on how
* word starts and ends are defined.
*
* Returns: the new position
*/
static gint
_gtk_pango_move_words (PangoLayout *layout,
gint offset,
gint count)
{
const PangoLogAttr *attrs;
gint n_attrs;
attrs = pango_layout_get_log_attrs_readonly (layout, &n_attrs);
while (count > 0 && offset < n_attrs - 1)
{
do
offset++;
while (offset < n_attrs - 1 && !attrs[offset].is_word_end);
count--;
}
while (count < 0 && offset > 0)
{
do
offset--;
while (offset > 0 && !attrs[offset].is_word_start);
count++;
}
return offset;
}
/*
* _gtk_pango_move_sentences:
* @layout: a #PangoLayout
* @offset: a character offset in @layout
* @count: the number of sentences to move from @offset
*
* Returns the position that is @count sentences from the
* given @offset. @count may be positive or negative.
*
* If @count is positive, the returned position will
* be a sentence end, otherwise it will be a sentence start.
* See the Pango documentation for details on how
* sentence starts and ends are defined.
*
* Returns: the new position
*/
static gint
_gtk_pango_move_sentences (PangoLayout *layout,
gint offset,
gint count)
{
const PangoLogAttr *attrs;
gint n_attrs;
attrs = pango_layout_get_log_attrs_readonly (layout, &n_attrs);
while (count > 0 && offset < n_attrs - 1)
{
do
offset++;
while (offset < n_attrs - 1 && !attrs[offset].is_sentence_end);
count--;
}
while (count < 0 && offset > 0)
{
do
offset--;
while (offset > 0 && !attrs[offset].is_sentence_start);
count++;
}
return offset;
}
/*
* _gtk_pango_is_inside_word:
* @layout: a #PangoLayout
* @offset: a character offset in @layout
*
* Returns whether the given position is inside
* a word.
*
* Returns: %TRUE if @offset is inside a word
*/
static gboolean
_gtk_pango_is_inside_word (PangoLayout *layout,
gint offset)
{
const PangoLogAttr *attrs;
gint n_attrs;
attrs = pango_layout_get_log_attrs_readonly (layout, &n_attrs);
while (offset >= 0 &&
!(attrs[offset].is_word_start || attrs[offset].is_word_end))
offset--;
if (offset >= 0)
return attrs[offset].is_word_start;
return FALSE;
}
/*
* _gtk_pango_is_inside_sentence:
* @layout: a #PangoLayout
* @offset: a character offset in @layout
*
* Returns whether the given position is inside
* a sentence.
*
* Returns: %TRUE if @offset is inside a sentence
*/
static gboolean
_gtk_pango_is_inside_sentence (PangoLayout *layout,
gint offset)
{
const PangoLogAttr *attrs;
gint n_attrs;
attrs = pango_layout_get_log_attrs_readonly (layout, &n_attrs);
while (offset >= 0 &&
!(attrs[offset].is_sentence_start || attrs[offset].is_sentence_end))
offset--;
if (offset >= 0)
return attrs[offset].is_sentence_start;
return FALSE;
}
static void
pango_layout_get_line_before (PangoLayout *layout,
AtkTextBoundary boundary_type,
gint offset,
gint *start_offset,
gint *end_offset)
{
PangoLayoutIter *iter;
PangoLayoutLine *line, *prev_line = NULL, *prev_prev_line = NULL;
gint index, start_index, end_index;
const gchar *text;
gboolean found = FALSE;
text = pango_layout_get_text (layout);
index = g_utf8_offset_to_pointer (text, offset) - text;
iter = pango_layout_get_iter (layout);
do
{
line = pango_layout_iter_get_line (iter);
start_index = line->start_index;
end_index = start_index + line->length;
if (index >= start_index && index <= end_index)
{
/* Found line for offset */
if (prev_line)
{
switch (boundary_type)
{
case ATK_TEXT_BOUNDARY_LINE_START:
end_index = start_index;
start_index = prev_line->start_index;
break;
case ATK_TEXT_BOUNDARY_LINE_END:
if (prev_prev_line)
start_index = prev_prev_line->start_index + prev_prev_line->length;
else
start_index = 0;
end_index = prev_line->start_index + prev_line->length;
break;
default:
g_assert_not_reached();
}
}
else
start_index = end_index = 0;
found = TRUE;
break;
}
prev_prev_line = prev_line;
prev_line = line;
}
while (pango_layout_iter_next_line (iter));
if (!found)
{
start_index = prev_line->start_index + prev_line->length;
end_index = start_index;
}
pango_layout_iter_free (iter);
*start_offset = g_utf8_pointer_to_offset (text, text + start_index);
*end_offset = g_utf8_pointer_to_offset (text, text + end_index);
}
static void
pango_layout_get_line_at (PangoLayout *layout,
AtkTextBoundary boundary_type,
gint offset,
gint *start_offset,
gint *end_offset)
{
PangoLayoutIter *iter;
PangoLayoutLine *line, *prev_line = NULL;
gint index, start_index, end_index;
const gchar *text;
gboolean found = FALSE;
text = pango_layout_get_text (layout);
index = g_utf8_offset_to_pointer (text, offset) - text;
iter = pango_layout_get_iter (layout);
do
{
line = pango_layout_iter_get_line (iter);
start_index = line->start_index;
end_index = start_index + line->length;
if (index >= start_index && index <= end_index)
{
/* Found line for offset */
switch (boundary_type)
{
case ATK_TEXT_BOUNDARY_LINE_START:
if (pango_layout_iter_next_line (iter))
end_index = pango_layout_iter_get_line (iter)->start_index;
break;
case ATK_TEXT_BOUNDARY_LINE_END:
if (prev_line)
start_index = prev_line->start_index + prev_line->length;
break;
default:
g_assert_not_reached();
}
found = TRUE;
break;
}
prev_line = line;
}
while (pango_layout_iter_next_line (iter));
if (!found)
{
start_index = prev_line->start_index + prev_line->length;
end_index = start_index;
}
pango_layout_iter_free (iter);
*start_offset = g_utf8_pointer_to_offset (text, text + start_index);
*end_offset = g_utf8_pointer_to_offset (text, text + end_index);
}
static void
pango_layout_get_line_after (PangoLayout *layout,
AtkTextBoundary boundary_type,
gint offset,
gint *start_offset,
gint *end_offset)
{
PangoLayoutIter *iter;
PangoLayoutLine *line, *prev_line = NULL;
gint index, start_index, end_index;
const gchar *text;
gboolean found = FALSE;
text = pango_layout_get_text (layout);
index = g_utf8_offset_to_pointer (text, offset) - text;
iter = pango_layout_get_iter (layout);
do
{
line = pango_layout_iter_get_line (iter);
start_index = line->start_index;
end_index = start_index + line->length;
if (index >= start_index && index <= end_index)
{
/* Found line for offset */
if (pango_layout_iter_next_line (iter))
{
line = pango_layout_iter_get_line (iter);
switch (boundary_type)
{
case ATK_TEXT_BOUNDARY_LINE_START:
start_index = line->start_index;
if (pango_layout_iter_next_line (iter))
end_index = pango_layout_iter_get_line (iter)->start_index;
else
end_index = start_index + line->length;
break;
case ATK_TEXT_BOUNDARY_LINE_END:
start_index = end_index;
end_index = line->start_index + line->length;
break;
default:
g_assert_not_reached();
}
}
else
start_index = end_index;
found = TRUE;
break;
}
prev_line = line;
}
while (pango_layout_iter_next_line (iter));
if (!found)
{
start_index = prev_line->start_index + prev_line->length;
end_index = start_index;
}
pango_layout_iter_free (iter);
*start_offset = g_utf8_pointer_to_offset (text, text + start_index);
*end_offset = g_utf8_pointer_to_offset (text, text + end_index);
}
/*
* _gtk_pango_get_text_at:
* @layout: a #PangoLayout
* @boundary_type: a #AtkTextBoundary
* @offset: a character offset in @layout
* @start_offset: return location for the start of the returned text
* @end_offset: return location for the end of the return text
*
* Gets a slice of the text from @layout at @offset.
*
* The @boundary_type determines the size of the returned slice of
* text. For the exact semantics of this function, see
* atk_text_get_text_after_offset().
*
* Returns: a newly allocated string containing a slice of text
* from layout. Free with g_free().
*/
static gchar *
_gtk_pango_get_text_at (PangoLayout *layout,
AtkTextBoundary boundary_type,
gint offset,
gint *start_offset,
gint *end_offset)
{
const gchar *text;
gint start, end;
const PangoLogAttr *attrs;
gint n_attrs;
text = pango_layout_get_text (layout);
if (text[0] == 0)
{
*start_offset = 0;
*end_offset = 0;
return g_strdup ("");
}
attrs = pango_layout_get_log_attrs_readonly (layout, &n_attrs);
start = offset;
end = start;
switch (boundary_type)
{
case ATK_TEXT_BOUNDARY_CHAR:
end = _gtk_pango_move_chars (layout, end, 1);
break;
case ATK_TEXT_BOUNDARY_WORD_START:
if (!attrs[start].is_word_start)
start = _gtk_pango_move_words (layout, start, -1);
if (_gtk_pango_is_inside_word (layout, end))
end = _gtk_pango_move_words (layout, end, 1);
while (!attrs[end].is_word_start && end < n_attrs - 1)
end = _gtk_pango_move_chars (layout, end, 1);
break;
case ATK_TEXT_BOUNDARY_WORD_END:
if (_gtk_pango_is_inside_word (layout, start) &&
!attrs[start].is_word_start)
start = _gtk_pango_move_words (layout, start, -1);
while (!attrs[start].is_word_end && start > 0)
start = _gtk_pango_move_chars (layout, start, -1);
end = _gtk_pango_move_words (layout, end, 1);
break;
case ATK_TEXT_BOUNDARY_SENTENCE_START:
if (!attrs[start].is_sentence_start)
start = _gtk_pango_move_sentences (layout, start, -1);
if (_gtk_pango_is_inside_sentence (layout, end))
end = _gtk_pango_move_sentences (layout, end, 1);
while (!attrs[end].is_sentence_start && end < n_attrs - 1)
end = _gtk_pango_move_chars (layout, end, 1);
break;
case ATK_TEXT_BOUNDARY_SENTENCE_END:
if (_gtk_pango_is_inside_sentence (layout, start) &&
!attrs[start].is_sentence_start)
start = _gtk_pango_move_sentences (layout, start, -1);
while (!attrs[start].is_sentence_end && start > 0)
start = _gtk_pango_move_chars (layout, start, -1);
end = _gtk_pango_move_sentences (layout, end, 1);
break;
case ATK_TEXT_BOUNDARY_LINE_START:
case ATK_TEXT_BOUNDARY_LINE_END:
pango_layout_get_line_at (layout, boundary_type, offset, &start, &end);
break;
}
*start_offset = start;
*end_offset = end;
g_assert (start <= end);
return g_utf8_substring (text, start, end);
}
/*
* _gtk_pango_get_text_before:
* @layout: a #PangoLayout
* @boundary_type: a #AtkTextBoundary
* @offset: a character offset in @layout
* @start_offset: return location for the start of the returned text
* @end_offset: return location for the end of the return text
*
* Gets a slice of the text from @layout before @offset.
*
* The @boundary_type determines the size of the returned slice of
* text. For the exact semantics of this function, see
* atk_text_get_text_before_offset().
*
* Returns: a newly allocated string containing a slice of text
* from layout. Free with g_free().
*/
static gchar *
_gtk_pango_get_text_before (PangoLayout *layout,
AtkTextBoundary boundary_type,
gint offset,
gint *start_offset,
gint *end_offset)
{
const gchar *text;
gint start, end;
const PangoLogAttr *attrs;
gint n_attrs;
text = pango_layout_get_text (layout);
if (text[0] == 0)
{
*start_offset = 0;
*end_offset = 0;
return g_strdup ("");
}
attrs = pango_layout_get_log_attrs_readonly (layout, &n_attrs);
start = offset;
end = start;
switch (boundary_type)
{
case ATK_TEXT_BOUNDARY_CHAR:
start = _gtk_pango_move_chars (layout, start, -1);
break;
case ATK_TEXT_BOUNDARY_WORD_START:
if (!attrs[start].is_word_start)
start = _gtk_pango_move_words (layout, start, -1);
end = start;
start = _gtk_pango_move_words (layout, start, -1);
break;
case ATK_TEXT_BOUNDARY_WORD_END:
if (_gtk_pango_is_inside_word (layout, start) &&
!attrs[start].is_word_start)
start = _gtk_pango_move_words (layout, start, -1);
while (!attrs[start].is_word_end && start > 0)
start = _gtk_pango_move_chars (layout, start, -1);
end = start;
start = _gtk_pango_move_words (layout, start, -1);
while (!attrs[start].is_word_end && start > 0)
start = _gtk_pango_move_chars (layout, start, -1);
break;
case ATK_TEXT_BOUNDARY_SENTENCE_START:
if (!attrs[start].is_sentence_start)
start = _gtk_pango_move_sentences (layout, start, -1);
end = start;
start = _gtk_pango_move_sentences (layout, start, -1);
break;
case ATK_TEXT_BOUNDARY_SENTENCE_END:
if (_gtk_pango_is_inside_sentence (layout, start) &&
!attrs[start].is_sentence_start)
start = _gtk_pango_move_sentences (layout, start, -1);
while (!attrs[start].is_sentence_end && start > 0)
start = _gtk_pango_move_chars (layout, start, -1);
end = start;
start = _gtk_pango_move_sentences (layout, start, -1);
while (!attrs[start].is_sentence_end && start > 0)
start = _gtk_pango_move_chars (layout, start, -1);
break;
case ATK_TEXT_BOUNDARY_LINE_START:
case ATK_TEXT_BOUNDARY_LINE_END:
pango_layout_get_line_before (layout, boundary_type, offset, &start, &end);
break;
}
*start_offset = start;
*end_offset = end;
g_assert (start <= end);
return g_utf8_substring (text, start, end);
}
/*
* _gtk_pango_get_text_after:
* @layout: a #PangoLayout
* @boundary_type: a #AtkTextBoundary
* @offset: a character offset in @layout
* @start_offset: return location for the start of the returned text
* @end_offset: return location for the end of the return text
*
* Gets a slice of the text from @layout after @offset.
*
* The @boundary_type determines the size of the returned slice of
* text. For the exact semantics of this function, see
* atk_text_get_text_after_offset().
*
* Returns: a newly allocated string containing a slice of text
* from layout. Free with g_free().
*/
static gchar *
_gtk_pango_get_text_after (PangoLayout *layout,
AtkTextBoundary boundary_type,
gint offset,
gint *start_offset,
gint *end_offset)
{
const gchar *text;
gint start, end;
const PangoLogAttr *attrs;
gint n_attrs;
text = pango_layout_get_text (layout);
if (text[0] == 0)
{
*start_offset = 0;
*end_offset = 0;
return g_strdup ("");
}
attrs = pango_layout_get_log_attrs_readonly (layout, &n_attrs);
start = offset;
end = start;
switch (boundary_type)
{
case ATK_TEXT_BOUNDARY_CHAR:
start = _gtk_pango_move_chars (layout, start, 1);
end = start;
end = _gtk_pango_move_chars (layout, end, 1);
break;
case ATK_TEXT_BOUNDARY_WORD_START:
if (_gtk_pango_is_inside_word (layout, end))
end = _gtk_pango_move_words (layout, end, 1);
while (!attrs[end].is_word_start && end < n_attrs - 1)
end = _gtk_pango_move_chars (layout, end, 1);
start = end;
if (end < n_attrs - 1)
{
end = _gtk_pango_move_words (layout, end, 1);
while (!attrs[end].is_word_start && end < n_attrs - 1)
end = _gtk_pango_move_chars (layout, end, 1);
}
break;
case ATK_TEXT_BOUNDARY_WORD_END:
end = _gtk_pango_move_words (layout, end, 1);
start = end;
if (end < n_attrs - 1)
end = _gtk_pango_move_words (layout, end, 1);
break;
case ATK_TEXT_BOUNDARY_SENTENCE_START:
if (_gtk_pango_is_inside_sentence (layout, end))
end = _gtk_pango_move_sentences (layout, end, 1);
while (!attrs[end].is_sentence_start && end < n_attrs - 1)
end = _gtk_pango_move_chars (layout, end, 1);
start = end;
if (end < n_attrs - 1)
{
end = _gtk_pango_move_sentences (layout, end, 1);
while (!attrs[end].is_sentence_start && end < n_attrs - 1)
end = _gtk_pango_move_chars (layout, end, 1);
}
break;
case ATK_TEXT_BOUNDARY_SENTENCE_END:
end = _gtk_pango_move_sentences (layout, end, 1);
start = end;
if (end < n_attrs - 1)
end = _gtk_pango_move_sentences (layout, end, 1);
break;
case ATK_TEXT_BOUNDARY_LINE_START:
case ATK_TEXT_BOUNDARY_LINE_END:
pango_layout_get_line_after (layout, boundary_type, offset, &start, &end);
break;
}
*start_offset = start;
*end_offset = end;
g_assert (start <= end);
return g_utf8_substring (text, start, end);
}
/***** atktext.h ******/
static void
cally_text_text_interface_init (AtkTextIface *iface)
{
g_return_if_fail (iface != NULL);
iface->get_text = cally_text_get_text;
iface->get_character_at_offset = cally_text_get_character_at_offset;
iface->get_text_before_offset = cally_text_get_text_before_offset;
iface->get_text_at_offset = cally_text_get_text_at_offset;
iface->get_text_after_offset = cally_text_get_text_after_offset;
iface->get_character_count = cally_text_get_character_count;
iface->get_caret_offset = cally_text_get_caret_offset;
iface->set_caret_offset = cally_text_set_caret_offset;
iface->get_n_selections = cally_text_get_n_selections;
iface->get_selection = cally_text_get_selection;
iface->add_selection = cally_text_add_selection;
iface->remove_selection = cally_text_remove_selection;
iface->set_selection = cally_text_set_selection;
iface->get_run_attributes = cally_text_get_run_attributes;
iface->get_default_attributes = cally_text_get_default_attributes;
iface->get_character_extents = cally_text_get_character_extents;
iface->get_offset_at_point = cally_text_get_offset_at_point;
}
static gchar*
cally_text_get_text (AtkText *text,
gint start_offset,
gint end_offset)
{
ClutterActor *actor = NULL;
PangoLayout *layout = NULL;
const gchar *string = NULL;
gint character_count = 0;
actor = CALLY_GET_CLUTTER_ACTOR (text);
if (actor == NULL) /* Object is defunct */
return NULL;
/* we use the pango layout instead of clutter_text_get_chars because
it take into account password-char */
layout = clutter_text_get_layout (CLUTTER_TEXT (actor));
string = pango_layout_get_text (layout);
character_count = pango_layout_get_character_count (layout);
if (end_offset == -1 || end_offset > character_count)
end_offset = character_count;
if (string[0] == 0)
return g_strdup("");
else
return g_utf8_substring (string, start_offset, end_offset);
}
static gunichar
cally_text_get_character_at_offset (AtkText *text,
gint offset)
{
ClutterActor *actor = NULL;
const gchar *string = NULL;
gchar *index = NULL;
gunichar unichar;
PangoLayout *layout = NULL;
actor = CALLY_GET_CLUTTER_ACTOR (text);
if (actor == NULL) /* State is defunct */
return '\0';
/* we use the pango layout instead of clutter_text_get_chars because
it take into account password-char */
layout = clutter_text_get_layout (CLUTTER_TEXT (actor));
string = pango_layout_get_text (layout);
if (offset >= g_utf8_strlen (string, -1))
{
unichar = '\0';
}
else
{
index = g_utf8_offset_to_pointer (string, offset);
unichar = g_utf8_get_char (index);
}
return unichar;
}
static gchar*
cally_text_get_text_before_offset (AtkText *text,
gint offset,
AtkTextBoundary boundary_type,
gint *start_offset,
gint *end_offset)
{
ClutterActor *actor = NULL;
actor = CALLY_GET_CLUTTER_ACTOR (text);
if (actor == NULL) /* State is defunct */
return NULL;
return _gtk_pango_get_text_before (clutter_text_get_layout (CLUTTER_TEXT (actor)),
boundary_type, offset,
start_offset, end_offset);
}
static gchar*
cally_text_get_text_at_offset (AtkText *text,
gint offset,
AtkTextBoundary boundary_type,
gint *start_offset,
gint *end_offset)
{
ClutterActor *actor = NULL;
actor = CALLY_GET_CLUTTER_ACTOR (text);
if (actor == NULL) /* State is defunct */
return NULL;
return _gtk_pango_get_text_at (clutter_text_get_layout (CLUTTER_TEXT (actor)),
boundary_type, offset,
start_offset, end_offset);
}
static gchar*
cally_text_get_text_after_offset (AtkText *text,
gint offset,
AtkTextBoundary boundary_type,
gint *start_offset,
gint *end_offset)
{
ClutterActor *actor = NULL;
actor = CALLY_GET_CLUTTER_ACTOR (text);
if (actor == NULL) /* State is defunct */
return NULL;
return _gtk_pango_get_text_after (clutter_text_get_layout (CLUTTER_TEXT (actor)),
boundary_type, offset,
start_offset, end_offset);
}
static gint
cally_text_get_caret_offset (AtkText *text)
{
ClutterActor *actor = NULL;
actor = CALLY_GET_CLUTTER_ACTOR (text);
if (actor == NULL) /* State is defunct */
return -1;
return clutter_text_get_cursor_position (CLUTTER_TEXT (actor));
}
static gboolean
cally_text_set_caret_offset (AtkText *text,
gint offset)
{
ClutterActor *actor = NULL;
actor = CALLY_GET_CLUTTER_ACTOR (text);
if (actor == NULL) /* State is defunct */
return FALSE;
clutter_text_set_cursor_position (CLUTTER_TEXT (actor), offset);
/* like in gailentry, we suppose that this always works, as clutter text
doesn't return anything */
return TRUE;
}
static gint
cally_text_get_character_count (AtkText *text)
{
ClutterActor *actor = NULL;
ClutterText *clutter_text = NULL;
actor = CALLY_GET_CLUTTER_ACTOR (text);
if (actor == NULL) /* State is defunct */
return 0;
clutter_text = CLUTTER_TEXT (actor);
return g_utf8_strlen (clutter_text_get_text (clutter_text), -1);
}
static gint
cally_text_get_n_selections (AtkText *text)
{
ClutterActor *actor = NULL;
gint selection_bound = -1;
actor = CALLY_GET_CLUTTER_ACTOR (text);
if (actor == NULL) /* State is defunct */
return 0;
if (!clutter_text_get_selectable (CLUTTER_TEXT (actor)))
return 0;
selection_bound = clutter_text_get_selection_bound (CLUTTER_TEXT (actor));
if (selection_bound > 0)
return 1;
else
return 0;
}
static gchar*
cally_text_get_selection (AtkText *text,
gint selection_num,
gint *start_offset,
gint *end_offset)
{
ClutterActor *actor = NULL;
actor = CALLY_GET_CLUTTER_ACTOR (text);
if (actor == NULL) /* State is defunct */
return NULL;
/* As in gailentry, only let the user get the selection if one is set, and if
* the selection_num is 0.
*/
if (selection_num != 0)
return NULL;
_cally_text_get_selection_bounds (CLUTTER_TEXT (actor), start_offset, end_offset);
if (*start_offset != *end_offset)
return clutter_text_get_selection (CLUTTER_TEXT (actor));
else
return NULL;
}
/* ClutterText only allows one selection. So this method will set the selection
if no selection exists, but as in gailentry, it will not change the current
selection */
static gboolean
cally_text_add_selection (AtkText *text,
gint start_offset,
gint end_offset)
{
ClutterActor *actor;
gint select_start, select_end;
actor = CALLY_GET_CLUTTER_ACTOR (text);
if (actor == NULL) /* State is defunct */
return FALSE;
_cally_text_get_selection_bounds (CLUTTER_TEXT (actor),
&select_start, &select_end);
/* Like in gailentry, if there is already a selection, then don't allow another
* to be added, since ClutterText only supports one selected region.
*/
if (select_start == select_end)
{
clutter_text_set_selection (CLUTTER_TEXT (actor),
start_offset, end_offset);
return TRUE;
}
else
return FALSE;
}
static gboolean
cally_text_remove_selection (AtkText *text,
gint selection_num)
{
ClutterActor *actor = NULL;
gint caret_pos = -1;
gint select_start = -1;
gint select_end = -1;
actor = CALLY_GET_CLUTTER_ACTOR (text);
if (actor == NULL) /* State is defunct */
return FALSE;
/* only one selection is allowed */
if (selection_num != 0)
return FALSE;
_cally_text_get_selection_bounds (CLUTTER_TEXT (actor),
&select_start, &select_end);
if (select_start != select_end)
{
/* Setting the start & end of the selected region to the caret position
* turns off the selection.
*/
caret_pos = clutter_text_get_cursor_position (CLUTTER_TEXT (actor));
clutter_text_set_selection (CLUTTER_TEXT (actor),
caret_pos, caret_pos);
return TRUE;
}
else
return FALSE;
}
static gboolean
cally_text_set_selection (AtkText *text,
gint selection_num,
gint start_offset,
gint end_offset)
{
ClutterActor *actor = NULL;
gint select_start = -1;
gint select_end = -1;
actor = CALLY_GET_CLUTTER_ACTOR (text);
if (actor == NULL) /* State is defunct */
return FALSE;
/* Like in gailentry, only let the user move the selection if one is set,
* and if the selection_num is 0
*/
if (selection_num != 0)
return FALSE;
_cally_text_get_selection_bounds (CLUTTER_TEXT (actor),
&select_start, &select_end);
if (select_start != select_end)
{
clutter_text_set_selection (CLUTTER_TEXT (actor),
start_offset, end_offset);
return TRUE;
}
else
return FALSE;
}
static AtkAttributeSet*
cally_text_get_run_attributes (AtkText *text,
gint offset,
gint *start_offset,
gint *end_offset)
{
ClutterActor *actor = NULL;
ClutterText *clutter_text = NULL;
AtkAttributeSet *at_set = NULL;
actor = CALLY_GET_CLUTTER_ACTOR (text);
if (actor == NULL) /* State is defunct */
return NULL;
/* Clutter don't have any reference to the direction*/
clutter_text = CLUTTER_TEXT (actor);
at_set = _cally_misc_layout_get_run_attributes (at_set,
clutter_text,
offset,
start_offset,
end_offset);
return at_set;
}
static AtkAttributeSet*
cally_text_get_default_attributes (AtkText *text)
{
ClutterActor *actor = NULL;
ClutterText *clutter_text = NULL;
AtkAttributeSet *at_set = NULL;
actor = CALLY_GET_CLUTTER_ACTOR (text);
if (actor == NULL) /* State is defunct */
return NULL;
clutter_text = CLUTTER_TEXT (actor);
at_set = _cally_misc_layout_get_default_attributes (at_set, clutter_text);
return at_set;
}
static void cally_text_get_character_extents (AtkText *text,
gint offset,
gint *xp,
gint *yp,
gint *widthp,
gint *heightp,
AtkCoordType coords)
{
ClutterActor *actor = NULL;
ClutterText *clutter_text = NULL;
gint x = 0, y = 0, width = 0, height = 0;
gint index, x_window, y_window, x_toplevel, y_toplevel;
gint x_layout, y_layout;
PangoLayout *layout;
PangoRectangle extents;
const gchar *text_value;
ClutterVertex verts[4];
actor = CALLY_GET_CLUTTER_ACTOR (text);
if (actor == NULL) /* State is defunct */
goto done;
clutter_text = CLUTTER_TEXT (actor);
text_value = clutter_text_get_text (clutter_text);
index = g_utf8_offset_to_pointer (text_value, offset) - text_value;
layout = clutter_text_get_layout (clutter_text);
pango_layout_index_to_pos (layout, index, &extents);
/* handle RTL text layout */
if (extents.width < 0)
{
extents.x += extents.width;
extents.width = -extents.width;
}
clutter_actor_get_abs_allocation_vertices (actor, verts);
x_window = verts[0].x;
y_window = verts[0].y;
clutter_text_get_layout_offsets (clutter_text, &x_layout, &y_layout);
x = (extents.x / PANGO_SCALE) + x_layout + x_window;
y = (extents.y / PANGO_SCALE) + y_layout + y_window;
width = extents.width / PANGO_SCALE;
height = extents.height / PANGO_SCALE;
if (coords == ATK_XY_SCREEN)
{
_cally_actor_get_top_level_origin (actor, &x_toplevel, &y_toplevel);
x += x_toplevel;
y += y_toplevel;
}
done:
if (widthp)
*widthp = width;
if (heightp)
*heightp = height;
if (xp)
*xp = x;
if (yp)
*yp = y;
}
static gint
cally_text_get_offset_at_point (AtkText *text,
gint x,
gint y,
AtkCoordType coords)
{
ClutterActor *actor = NULL;
ClutterText *clutter_text = NULL;
const gchar *text_value;
gint index;
actor = CALLY_GET_CLUTTER_ACTOR (text);
if (actor == NULL) /* State is defunct */
return -1;
clutter_text = CLUTTER_TEXT (actor);
index = _cally_misc_get_index_at_point (clutter_text, x, y, coords);
text_value = clutter_text_get_text (clutter_text);
if (index == -1)
return g_utf8_strlen (text_value, -1);
else
return g_utf8_pointer_to_offset (text_value, text_value + index);
}
/******** Auxiliar private methods ******/
/* ClutterText only maintains the current cursor position and a extra selection
bound, but this could be before or after the cursor. This method returns
the start and end positions in a proper order (so start<=end). This is
similar to the function gtk_editable_get_selection_bounds */
static void
_cally_text_get_selection_bounds (ClutterText *clutter_text,
gint *start_offset,
gint *end_offset)
{
gint pos = -1;
gint selection_bound = -1;
pos = clutter_text_get_cursor_position (clutter_text);
selection_bound = clutter_text_get_selection_bound (clutter_text);
if (pos < selection_bound)
{
*start_offset = pos;
*end_offset = selection_bound;
}
else
{
*start_offset = selection_bound;
*end_offset = pos;
}
}
static void
_cally_text_delete_text_cb (ClutterText *clutter_text,
gint start_pos,
gint end_pos,
gpointer data)
{
CallyText *cally_text = NULL;
g_return_if_fail (CALLY_IS_TEXT (data));
/* Ignore zero lengh deletions */
if (end_pos - start_pos == 0)
return;
cally_text = CALLY_TEXT (data);
if (!cally_text->priv->signal_name_delete)
{
cally_text->priv->signal_name_delete = "text_changed::delete";
cally_text->priv->position_delete = start_pos;
cally_text->priv->length_delete = end_pos - start_pos;
}
_notify_delete (cally_text);
}
static void
_cally_text_insert_text_cb (ClutterText *clutter_text,
gchar *new_text,
gint new_text_length,
gint *position,
gpointer data)
{
CallyText *cally_text = NULL;
g_return_if_fail (CALLY_IS_TEXT (data));
cally_text = CALLY_TEXT (data);
if (!cally_text->priv->signal_name_insert)
{
cally_text->priv->signal_name_insert = "text_changed::insert";
cally_text->priv->position_insert = *position;
cally_text->priv->length_insert = g_utf8_strlen (new_text, new_text_length);
}
/*
* The signal will be emitted when the cursor position is updated,
* or in an idle handler if it not updated.
*/
if (cally_text->priv->insert_idle_handler == 0)
cally_text->priv->insert_idle_handler = clutter_threads_add_idle (_idle_notify_insert,
cally_text);
}
/***** atkeditabletext.h ******/
static void
cally_text_editable_text_interface_init (AtkEditableTextIface *iface)
{
g_return_if_fail (iface != NULL);
iface->set_text_contents = cally_text_set_text_contents;
iface->insert_text = cally_text_insert_text;
iface->delete_text = cally_text_delete_text;
iface->set_run_attributes = NULL;
iface->copy_text = NULL;
iface->cut_text = NULL;
iface->paste_text = NULL;
}
static void
cally_text_set_text_contents (AtkEditableText *text,
const gchar *string)
{
ClutterActor *actor = NULL;
actor = CALLY_GET_CLUTTER_ACTOR (text);
if (actor == NULL)
return;
if (!clutter_text_get_editable (CLUTTER_TEXT (actor)))
return;
clutter_text_set_text (CLUTTER_TEXT (actor),
string);
}
static void
cally_text_insert_text (AtkEditableText *text,
const gchar *string,
gint length,
gint *position)
{
ClutterActor *actor = NULL;
actor = CALLY_GET_CLUTTER_ACTOR (text);
if (actor == NULL)
return;
if (!clutter_text_get_editable (CLUTTER_TEXT (actor)))
return;
if (length < 0)
length = g_utf8_strlen (string, -1);
clutter_text_insert_text (CLUTTER_TEXT (actor),
string, *position);
/* we suppose that the text insertion will be succesful,
clutter-text doesn't warn about it. A option would be search for
the text, but it seems not really required */
*position += length;
}
static void cally_text_delete_text (AtkEditableText *text,
gint start_pos,
gint end_pos)
{
ClutterActor *actor = NULL;
actor = CALLY_GET_CLUTTER_ACTOR (text);
if (actor == NULL)
return;
if (!clutter_text_get_editable (CLUTTER_TEXT (actor)))
return;
clutter_text_delete_text (CLUTTER_TEXT (actor),
start_pos, end_pos);
}
/* CallyActor */
static void
cally_text_notify_clutter (GObject *obj,
GParamSpec *pspec)
{
ClutterText *clutter_text = NULL;
CallyText *cally_text = NULL;
AtkObject *atk_obj = NULL;
clutter_text = CLUTTER_TEXT (obj);
atk_obj = clutter_actor_get_accessible (CLUTTER_ACTOR (obj));
cally_text = CALLY_TEXT (atk_obj);
if (g_strcmp0 (pspec->name, "position") == 0)
{
/* the selection can change also for the cursor position */
if (_check_for_selection_change (cally_text, clutter_text))
g_signal_emit_by_name (atk_obj, "text_selection_changed");
g_signal_emit_by_name (atk_obj, "text_caret_moved",
clutter_text_get_cursor_position (clutter_text));
}
else if (g_strcmp0 (pspec->name, "selection-bound") == 0)
{
if (_check_for_selection_change (cally_text, clutter_text))
g_signal_emit_by_name (atk_obj, "text_selection_changed");
}
else if (g_strcmp0 (pspec->name, "editable") == 0)
{
atk_object_notify_state_change (atk_obj, ATK_STATE_EDITABLE,
clutter_text_get_editable (clutter_text));
}
else if (g_strcmp0 (pspec->name, "activatable") == 0)
{
_check_activate_action (cally_text, clutter_text);
}
else if (g_strcmp0 (pspec->name, "password-char") == 0)
{
if (clutter_text_get_password_char (clutter_text) != 0)
atk_object_set_role (atk_obj, ATK_ROLE_PASSWORD_TEXT);
else
atk_object_set_role (atk_obj, ATK_ROLE_TEXT);
}
else
{
CALLY_ACTOR_CLASS (cally_text_parent_class)->notify_clutter (obj, pspec);
}
}
static gboolean
_check_for_selection_change (CallyText *cally_text,
ClutterText *clutter_text)
{
gboolean ret_val = FALSE;
gint clutter_pos = -1;
gint clutter_bound = -1;
clutter_pos = clutter_text_get_cursor_position (clutter_text);
clutter_bound = clutter_text_get_selection_bound (clutter_text);
if (clutter_pos != clutter_bound)
{
if (clutter_pos != cally_text->priv->cursor_position ||
clutter_bound != cally_text->priv->selection_bound)
/*
* This check is here as this function can be called for
* notification of selection_bound and current_pos. The
* values of current_pos and selection_bound may be the same
* for both notifications and we only want to generate one
* text_selection_changed signal.
*/
ret_val = TRUE;
}
else
{
/* We had a selection */
ret_val = (cally_text->priv->cursor_position != cally_text->priv->selection_bound);
}
cally_text->priv->cursor_position = clutter_pos;
cally_text->priv->selection_bound = clutter_bound;
return ret_val;
}
static gboolean
_idle_notify_insert (gpointer data)
{
CallyText *cally_text = NULL;
cally_text = CALLY_TEXT (data);
cally_text->priv->insert_idle_handler = 0;
_notify_insert (cally_text);
return FALSE;
}
static void
_notify_insert (CallyText *cally_text)
{
if (cally_text->priv->signal_name_insert)
{
g_signal_emit_by_name (cally_text,
cally_text->priv->signal_name_insert,
cally_text->priv->position_insert,
cally_text->priv->length_insert);
cally_text->priv->signal_name_insert = NULL;
}
}
static void
_notify_delete (CallyText *cally_text)
{
if (cally_text->priv->signal_name_delete)
{
g_signal_emit_by_name (cally_text,
cally_text->priv->signal_name_delete,
cally_text->priv->position_delete,
cally_text->priv->length_delete);
cally_text->priv->signal_name_delete = NULL;
}
}
/* atkaction */
static void
_cally_text_activate_action (CallyActor *cally_actor)
{
ClutterActor *actor = NULL;
actor = CALLY_GET_CLUTTER_ACTOR (cally_actor);
clutter_text_activate (CLUTTER_TEXT (actor));
}
static void
_check_activate_action (CallyText *cally_text,
ClutterText *clutter_text)
{
if (clutter_text_get_activatable (clutter_text))
{
if (cally_text->priv->activate_action_id != 0)
return;
cally_text->priv->activate_action_id = cally_actor_add_action (CALLY_ACTOR (cally_text),
"activate", NULL, NULL,
_cally_text_activate_action);
}
else
{
if (cally_text->priv->activate_action_id == 0)
return;
if (cally_actor_remove_action (CALLY_ACTOR (cally_text),
cally_text->priv->activate_action_id))
{
cally_text->priv->activate_action_id = 0;
}
}
}
/* GailTextUtil/GailMisc reimplementation methods */
/**
* _cally_misc_add_attribute:
*
* Reimplementation of gail_misc_layout_get_run_attributes (check this
* function for more documentation).
*
* Returns: A pointer to the new #AtkAttributeSet.
**/
static AtkAttributeSet*
_cally_misc_add_attribute (AtkAttributeSet *attrib_set,
AtkTextAttribute attr,
gchar *value)
{
AtkAttributeSet *return_set;
AtkAttribute *at = g_malloc (sizeof (AtkAttribute));
at->name = g_strdup (atk_text_attribute_get_name (attr));
at->value = value;
return_set = g_slist_prepend(attrib_set, at);
return return_set;
}
static gint
_cally_atk_attribute_lookup_func (gconstpointer data,
gconstpointer user_data)
{
AtkTextAttribute attr = (AtkTextAttribute) user_data;
AtkAttribute *at = (AtkAttribute *) data;
if (!g_strcmp0 (at->name, atk_text_attribute_get_name (attr)))
return 0;
return -1;
}
static gboolean
_cally_misc_find_atk_attribute (AtkAttributeSet *attrib_set,
AtkTextAttribute attr)
{
GSList* result = g_slist_find_custom ((GSList*) attrib_set,
(gconstpointer) attr,
_cally_atk_attribute_lookup_func);
return (result != NULL);
}
/**
* _cally_misc_layout_atk_attributes_from_pango:
*
* Store the pango attributes as their ATK equivalent in an existing
* #AtkAttributeSet.
*
* Returns: A pointer to the updated #AtkAttributeSet.
**/
static AtkAttributeSet*
_cally_misc_layout_atk_attributes_from_pango (AtkAttributeSet *attrib_set,
PangoAttrIterator *iter)
{
PangoAttrString *pango_string;
PangoAttrInt *pango_int;
PangoAttrColor *pango_color;
PangoAttrLanguage *pango_lang;
PangoAttrFloat *pango_float;
gchar *value = NULL;
if ((pango_string = (PangoAttrString*) pango_attr_iterator_get (iter,
PANGO_ATTR_FAMILY)) != NULL)
{
value = g_strdup_printf("%s", pango_string->value);
attrib_set = _cally_misc_add_attribute (attrib_set,
ATK_TEXT_ATTR_FAMILY_NAME,
value);
}
if ((pango_int = (PangoAttrInt*) pango_attr_iterator_get (iter,
PANGO_ATTR_STYLE)) != NULL)
{
attrib_set = _cally_misc_add_attribute (attrib_set,
ATK_TEXT_ATTR_STYLE,
g_strdup (atk_text_attribute_get_value (ATK_TEXT_ATTR_STYLE, pango_int->value)));
}
if ((pango_int = (PangoAttrInt*) pango_attr_iterator_get (iter,
PANGO_ATTR_WEIGHT)) != NULL)
{
value = g_strdup_printf("%i", pango_int->value);
attrib_set = _cally_misc_add_attribute (attrib_set,
ATK_TEXT_ATTR_WEIGHT,
value);
}
if ((pango_int = (PangoAttrInt*) pango_attr_iterator_get (iter,
PANGO_ATTR_VARIANT)) != NULL)
{
attrib_set = _cally_misc_add_attribute (attrib_set,
ATK_TEXT_ATTR_VARIANT,
g_strdup (atk_text_attribute_get_value (ATK_TEXT_ATTR_VARIANT, pango_int->value)));
}
if ((pango_int = (PangoAttrInt*) pango_attr_iterator_get (iter,
PANGO_ATTR_STRETCH)) != NULL)
{
attrib_set = _cally_misc_add_attribute (attrib_set,
ATK_TEXT_ATTR_STRETCH,
g_strdup (atk_text_attribute_get_value (ATK_TEXT_ATTR_STRETCH, pango_int->value)));
}
if ((pango_int = (PangoAttrInt*) pango_attr_iterator_get (iter,
PANGO_ATTR_SIZE)) != NULL)
{
value = g_strdup_printf("%i", pango_int->value / PANGO_SCALE);
attrib_set = _cally_misc_add_attribute (attrib_set,
ATK_TEXT_ATTR_SIZE,
value);
}
if ((pango_int = (PangoAttrInt*) pango_attr_iterator_get (iter,
PANGO_ATTR_UNDERLINE)) != NULL)
{
attrib_set = _cally_misc_add_attribute (attrib_set,
ATK_TEXT_ATTR_UNDERLINE,
g_strdup (atk_text_attribute_get_value (ATK_TEXT_ATTR_UNDERLINE, pango_int->value)));
}
if ((pango_int = (PangoAttrInt*) pango_attr_iterator_get (iter,
PANGO_ATTR_STRIKETHROUGH)) != NULL)
{
attrib_set = _cally_misc_add_attribute (attrib_set,
ATK_TEXT_ATTR_STRIKETHROUGH,
g_strdup (atk_text_attribute_get_value (ATK_TEXT_ATTR_STRIKETHROUGH, pango_int->value)));
}
if ((pango_int = (PangoAttrInt*) pango_attr_iterator_get (iter,
PANGO_ATTR_RISE)) != NULL)
{
value = g_strdup_printf("%i", pango_int->value);
attrib_set = _cally_misc_add_attribute (attrib_set,
ATK_TEXT_ATTR_RISE,
value);
}
if ((pango_lang = (PangoAttrLanguage*) pango_attr_iterator_get (iter,
PANGO_ATTR_LANGUAGE)) != NULL)
{
value = g_strdup( pango_language_to_string( pango_lang->value));
attrib_set = _cally_misc_add_attribute (attrib_set,
ATK_TEXT_ATTR_LANGUAGE,
value);
}
if ((pango_float = (PangoAttrFloat*) pango_attr_iterator_get (iter,
PANGO_ATTR_SCALE)) != NULL)
{
value = g_strdup_printf("%g", pango_float->value);
attrib_set = _cally_misc_add_attribute (attrib_set,
ATK_TEXT_ATTR_SCALE,
value);
}
if ((pango_color = (PangoAttrColor*) pango_attr_iterator_get (iter,
PANGO_ATTR_FOREGROUND)) != NULL)
{
value = g_strdup_printf ("%u,%u,%u",
pango_color->color.red,
pango_color->color.green,
pango_color->color.blue);
attrib_set = _cally_misc_add_attribute (attrib_set,
ATK_TEXT_ATTR_FG_COLOR,
value);
}
if ((pango_color = (PangoAttrColor*) pango_attr_iterator_get (iter,
PANGO_ATTR_BACKGROUND)) != NULL)
{
value = g_strdup_printf ("%u,%u,%u",
pango_color->color.red,
pango_color->color.green,
pango_color->color.blue);
attrib_set = _cally_misc_add_attribute (attrib_set,
ATK_TEXT_ATTR_BG_COLOR,
value);
}
return attrib_set;
}
static AtkAttributeSet*
_cally_misc_add_actor_color_to_attribute_set (AtkAttributeSet *attrib_set,
ClutterText *clutter_text)
{
ClutterColor color;
gchar *value;
clutter_text_get_color (clutter_text, &color);
value = g_strdup_printf ("%u,%u,%u",
(guint) (color.red * 65535 / 255),
(guint) (color.green * 65535 / 255),
(guint) (color.blue * 65535 / 255));
attrib_set = _cally_misc_add_attribute (attrib_set,
ATK_TEXT_ATTR_FG_COLOR,
value);
return attrib_set;
}
/**
* _cally_misc_layout_get_run_attributes:
*
* Reimplementation of gail_misc_layout_get_run_attributes (check this
* function for more documentation).
*
* Returns: A pointer to the #AtkAttributeSet.
**/
static AtkAttributeSet*
_cally_misc_layout_get_run_attributes (AtkAttributeSet *attrib_set,
ClutterText *clutter_text,
gint offset,
gint *start_offset,
gint *end_offset)
{
PangoAttrIterator *iter;
PangoAttrList *attr;
gint index, start_index, end_index;
gboolean is_next = TRUE;
glong len;
PangoLayout *layout = clutter_text_get_layout (clutter_text);
gchar *text = (gchar*) clutter_text_get_text (clutter_text);
len = g_utf8_strlen (text, -1);
/* Grab the attributes of the PangoLayout, if any */
if ((attr = pango_layout_get_attributes (layout)) == NULL)
{
*start_offset = 0;
*end_offset = len;
_cally_misc_add_actor_color_to_attribute_set (attrib_set, clutter_text);
}
else
{
iter = pango_attr_list_get_iterator (attr);
/* Get invariant range offsets */
/* If offset out of range, set offset in range */
if (offset > len)
offset = len;
else if (offset < 0)
offset = 0;
index = g_utf8_offset_to_pointer (text, offset) - text;
pango_attr_iterator_range (iter, &start_index, &end_index);
while (is_next)
{
if (index >= start_index && index < end_index)
{
*start_offset = g_utf8_pointer_to_offset (text,
text + start_index);
if (end_index == G_MAXINT)
/* Last iterator */
end_index = len;
*end_offset = g_utf8_pointer_to_offset (text,
text + end_index);
break;
}
is_next = pango_attr_iterator_next (iter);
pango_attr_iterator_range (iter, &start_index, &end_index);
}
/* Get attributes */
attrib_set = _cally_misc_layout_atk_attributes_from_pango (attrib_set, iter);
pango_attr_iterator_destroy (iter);
}
if (!_cally_misc_find_atk_attribute (attrib_set, ATK_TEXT_ATTR_FG_COLOR))
attrib_set = _cally_misc_add_actor_color_to_attribute_set (attrib_set, clutter_text);
return attrib_set;
}
/**
* _cally_misc_layout_get_default_attributes:
*
* Reimplementation of gail_misc_layout_get_default_attributes (check this
* function for more documentation).
*
* Returns: A pointer to the #AtkAttributeSet.
**/
static AtkAttributeSet*
_cally_misc_layout_get_default_attributes (AtkAttributeSet *attrib_set,
ClutterText *clutter_text)
{
PangoLayout *layout;
PangoContext *context;
PangoLanguage* language;
PangoFontDescription* font;
PangoWrapMode mode;
gchar *value = NULL;
gint int_value;
ClutterTextDirection text_direction;
PangoAttrIterator *iter;
PangoAttrList *attr;
text_direction = clutter_actor_get_text_direction (CLUTTER_ACTOR (clutter_text));
switch (text_direction)
{
case CLUTTER_TEXT_DIRECTION_DEFAULT:
value = g_strdup ("none");
break;
case CLUTTER_TEXT_DIRECTION_LTR:
value = g_strdup ("ltr");
break;
case CLUTTER_TEXT_DIRECTION_RTL:
value = g_strdup ("rtl");
break;
default:
value = g_strdup ("none");
break;
}
attrib_set = _cally_misc_add_attribute (attrib_set,
ATK_TEXT_ATTR_DIRECTION,
value);
layout = clutter_text_get_layout (clutter_text);
context = pango_layout_get_context (layout);
if (context)
{
if ((language = pango_context_get_language (context)))
{
value = g_strdup (pango_language_to_string (language));
attrib_set = _cally_misc_add_attribute (attrib_set,
ATK_TEXT_ATTR_LANGUAGE, value);
}
if ((font = pango_context_get_font_description (context)))
{
value = g_strdup (atk_text_attribute_get_value (ATK_TEXT_ATTR_STYLE,
pango_font_description_get_style (font)));
attrib_set = _cally_misc_add_attribute (attrib_set,
ATK_TEXT_ATTR_STYLE,
value);
value = g_strdup (atk_text_attribute_get_value (ATK_TEXT_ATTR_VARIANT,
pango_font_description_get_variant (font)));
attrib_set = _cally_misc_add_attribute (attrib_set,
ATK_TEXT_ATTR_VARIANT, value);
value = g_strdup (atk_text_attribute_get_value (ATK_TEXT_ATTR_STRETCH,
pango_font_description_get_stretch (font)));
attrib_set = _cally_misc_add_attribute (attrib_set,
ATK_TEXT_ATTR_STRETCH, value);
value = g_strdup (pango_font_description_get_family (font));
attrib_set = _cally_misc_add_attribute (attrib_set,
ATK_TEXT_ATTR_FAMILY_NAME, value);
value = g_strdup_printf ("%d", pango_font_description_get_weight (font));
attrib_set = _cally_misc_add_attribute (attrib_set,
ATK_TEXT_ATTR_WEIGHT, value);
value = g_strdup_printf ("%i", pango_font_description_get_size (font) / PANGO_SCALE);
attrib_set = _cally_misc_add_attribute (attrib_set,
ATK_TEXT_ATTR_SIZE, value);
}
}
if (pango_layout_get_justify (layout))
int_value = 3;
else
{
PangoAlignment align;
align = pango_layout_get_alignment (layout);
if (align == PANGO_ALIGN_LEFT)
int_value = 0;
else if (align == PANGO_ALIGN_CENTER)
int_value = 2;
else /* if (align == PANGO_ALIGN_RIGHT) */
int_value = 1;
}
value = g_strdup (atk_text_attribute_get_value (ATK_TEXT_ATTR_JUSTIFICATION,
int_value));
attrib_set = _cally_misc_add_attribute (attrib_set,
ATK_TEXT_ATTR_JUSTIFICATION,
value);
mode = pango_layout_get_wrap (layout);
if (mode == PANGO_WRAP_WORD)
int_value = 2;
else /* if (mode == PANGO_WRAP_CHAR) */
int_value = 1;
value = g_strdup (atk_text_attribute_get_value (ATK_TEXT_ATTR_WRAP_MODE,
int_value));
attrib_set = _cally_misc_add_attribute (attrib_set,
ATK_TEXT_ATTR_WRAP_MODE, value);
if ((attr = clutter_text_get_attributes (clutter_text)))
{
iter = pango_attr_list_get_iterator (attr);
/* Get attributes */
attrib_set = _cally_misc_layout_atk_attributes_from_pango (attrib_set, iter);
pango_attr_iterator_destroy (iter);
}
if (!_cally_misc_find_atk_attribute (attrib_set, ATK_TEXT_ATTR_FG_COLOR))
attrib_set = _cally_misc_add_actor_color_to_attribute_set (attrib_set,
clutter_text);
value = g_strdup (atk_text_attribute_get_value (ATK_TEXT_ATTR_FG_STIPPLE, 0));
attrib_set = _cally_misc_add_attribute (attrib_set,
ATK_TEXT_ATTR_FG_STIPPLE,
value);
value = g_strdup (atk_text_attribute_get_value (ATK_TEXT_ATTR_BG_STIPPLE, 0));
attrib_set = _cally_misc_add_attribute (attrib_set,
ATK_TEXT_ATTR_BG_STIPPLE,
value);
attrib_set = _cally_misc_add_attribute (attrib_set,
ATK_TEXT_ATTR_BG_FULL_HEIGHT,
g_strdup_printf ("%i", 0));
attrib_set = _cally_misc_add_attribute (attrib_set,
ATK_TEXT_ATTR_PIXELS_INSIDE_WRAP,
g_strdup_printf ("%i", 0));
attrib_set = _cally_misc_add_attribute (attrib_set,
ATK_TEXT_ATTR_PIXELS_BELOW_LINES,
g_strdup_printf ("%i", 0));
attrib_set = _cally_misc_add_attribute (attrib_set,
ATK_TEXT_ATTR_PIXELS_ABOVE_LINES,
g_strdup_printf ("%i", 0));
value = g_strdup (atk_text_attribute_get_value (ATK_TEXT_ATTR_EDITABLE,
clutter_text_get_editable (clutter_text)));
attrib_set = _cally_misc_add_attribute (attrib_set,
ATK_TEXT_ATTR_EDITABLE,
value);
value = g_strdup (atk_text_attribute_get_value (ATK_TEXT_ATTR_INVISIBLE,
!CLUTTER_ACTOR_IS_VISIBLE (clutter_text)));
attrib_set = _cally_misc_add_attribute (attrib_set,
ATK_TEXT_ATTR_INVISIBLE, value);
value = g_strdup_printf ("%i", pango_layout_get_indent (layout));
attrib_set = _cally_misc_add_attribute (attrib_set,
ATK_TEXT_ATTR_INDENT, value);
attrib_set = _cally_misc_add_attribute (attrib_set,
ATK_TEXT_ATTR_RIGHT_MARGIN,
g_strdup_printf ("%i", 0));
attrib_set = _cally_misc_add_attribute (attrib_set,
ATK_TEXT_ATTR_LEFT_MARGIN,
g_strdup_printf ("%i", 0));
return attrib_set;
}
static int
_cally_misc_get_index_at_point (ClutterText *clutter_text,
gint x,
gint y,
AtkCoordType coords)
{
gint index, x_window, y_window, x_toplevel, y_toplevel;
gint x_temp, y_temp;
gboolean ret;
ClutterVertex verts[4];
PangoLayout *layout;
gint x_layout, y_layout;
clutter_text_get_layout_offsets (clutter_text, &x_layout, &y_layout);
clutter_actor_get_abs_allocation_vertices (CLUTTER_ACTOR (clutter_text), verts);
x_window = verts[0].x;
y_window = verts[0].y;
x_temp = x - x_layout - x_window;
y_temp = y - y_layout - y_window;
if (coords == ATK_XY_SCREEN)
{
_cally_actor_get_top_level_origin (CLUTTER_ACTOR (clutter_text), &x_toplevel,
&y_toplevel);
x_temp -= x_toplevel;
y_temp -= y_toplevel;
}
layout = clutter_text_get_layout (clutter_text);
ret = pango_layout_xy_to_index (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;
}
return index;
}
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