/* CALLY - The Clutter Accessibility Implementation Library * * Copyright (C) 2009 Igalia, S.L. * * Author: Alejandro Piñeiro Iglesias * * Some parts are based on GailLabel, GailEntry, GailTextView from GAIL * GAIL - The GNOME Accessibility Implementation Library * Copyright 2001, 2002, 2003 Sun Microsystems Inc. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ /** * 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 * * */ /* * IMPLEMENTATION NOTES: * * * AtkText: There are still some methods not implemented yet: * atk_text_get_default_attributes * atk_text_get_character_extents * atk_text_get_offset_at_point * * See details on bug CB#1733 * * * AtkEditableText: some methods will not be implemented * * * atk_editable_text_set_run_attributes: ClutterText has some * properties equivalent to the AtkAttributte, but it doesn't * allow you to define it by * * * atk_editable_text_copy: Clutter has no Clipboard support * * * atk_editable_text_paste: Clutter has no Clipboard support * * * atk_editable_text_cut: Clutter has no Clipboard support. In * this case, as cut is basically a copy&delete combination, * we could have implemented it using the delete, but IMHO, * it would be weird to cut a text, get the text removed and * then not be able to paste the text * * See details on bug CB#1734 */ #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 const gchar * cally_text_get_name (AtkObject *obj); 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 */ gchar *signal_name_insert; gint position_insert; gint length_insert; guint insert_idle_handler; /* text_changed::delete stuff */ 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->get_name = cally_text_get_name; 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) obj->role = ATK_ROLE_PASSWORD_TEXT; else obj->role = ATK_ROLE_TEXT; } static const gchar * cally_text_get_name (AtkObject *obj) { const gchar *name; g_return_val_if_fail (CALLY_IS_ACTOR (obj), NULL); name = ATK_OBJECT_CLASS (cally_text_parent_class)->get_name (obj); if (name == NULL) { ClutterActor *actor = NULL; actor = CALLY_GET_CLUTTER_ACTOR (obj); if (actor == NULL) /* State is defunct */ name = NULL; else name = clutter_text_get_text (CLUTTER_TEXT (actor)); } return name; } 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; } /***** 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; actor = CALLY_GET_CLUTTER_ACTOR (text); if (actor == NULL) /* Object is defunct */ return NULL; return clutter_text_get_chars (CLUTTER_TEXT (actor), start_offset, end_offset); } static gunichar cally_text_get_character_at_offset (AtkText *text, gint offset) { ClutterActor *actor = NULL; gchar *string = NULL; gchar *index = NULL; gunichar unichar; actor = CALLY_GET_CLUTTER_ACTOR (text); if (actor == NULL) /* State is defunct */ return '\0'; string = clutter_text_get_chars (CLUTTER_TEXT (actor), 0, -1); if (offset >= g_utf8_strlen (string, -1)) { unichar = '\0'; } else { index = g_utf8_offset_to_pointer (string, offset); unichar = g_utf8_get_char(index); } g_free(string); 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; #if 0 ClutterText *clutter_text = NULL; CallyText *cally_text = NULL; #endif actor = CALLY_GET_CLUTTER_ACTOR (text); if (actor == NULL) /* State is defunct */ return NULL; #if 0 clutter_text = CLUTTER_TEXT (actor); cally_text = CALLY_TEXT (text); return gail_text_util_get_text (cally_text->priv->textutil, clutter_text_get_layout (clutter_text), GAIL_BEFORE_OFFSET, boundary_type, offset, start_offset, end_offset); #endif return NULL; } static gchar* cally_text_get_text_at_offset (AtkText *text, gint offset, AtkTextBoundary boundary_type, gint *start_offset, gint *end_offset) { ClutterActor *actor = NULL; #if 0 ClutterText *clutter_text = NULL; CallyText *cally_text = NULL; #endif actor = CALLY_GET_CLUTTER_ACTOR (text); if (actor == NULL) /* State is defunct */ return NULL; #if 0 clutter_text = CLUTTER_TEXT (actor); cally_text = CALLY_TEXT (text); return gail_text_util_get_text (cally_text->priv->textutil, clutter_text_get_layout (clutter_text), GAIL_AT_OFFSET, boundary_type, offset, start_offset, end_offset); #endif return NULL; } static gchar* cally_text_get_text_after_offset (AtkText *text, gint offset, AtkTextBoundary boundary_type, gint *start_offset, gint *end_offset) { ClutterActor *actor = NULL; #if 0 ClutterText *clutter_text = NULL; CallyText *cally_text = NULL; #endif actor = CALLY_GET_CLUTTER_ACTOR (text); if (actor == NULL) /* State is defunct */ return NULL; #if 0 clutter_text = CLUTTER_TEXT (actor); cally_text = CALLY_TEXT (text); return gail_text_util_get_text (cally_text->priv->textutil, clutter_text_get_layout (clutter_text), GAIL_AFTER_OFFSET, boundary_type, offset, start_offset, end_offset); #endif return NULL; } 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; /* Not implemented, see IMPLEMENTATION NOTES*/ 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; }