diff options
Diffstat (limited to 'a11y/e-text/gal-a11y-e-text.c')
| -rw-r--r-- | a11y/e-text/gal-a11y-e-text.c | 520 |
1 files changed, 496 insertions, 24 deletions
diff --git a/a11y/e-text/gal-a11y-e-text.c b/a11y/e-text/gal-a11y-e-text.c index a37726a5a8..06fe40d41b 100644 --- a/a11y/e-text/gal-a11y-e-text.c +++ b/a11y/e-text/gal-a11y-e-text.c @@ -16,6 +16,7 @@ #include <atk/atkregistry.h> #include <atk/atkgobjectaccessible.h> #include "gal/e-text/e-text.h" +#include "gal/e-text/e-text-model-repos.h" #include <gtk/gtkmain.h> #define CS_CLASS(a11y) (G_TYPE_INSTANCE_GET_CLASS ((a11y), C_TYPE_STREAM, GalA11yETextClass)) @@ -131,6 +132,166 @@ et_get_text (AtkText *text, return g_strndup (full_text + real_start, real_end - real_start); } +static gboolean +is_a_seperator (gunichar c) +{ + return g_unichar_ispunct(c) || g_unichar_isspace(c); +} + +static gint +find_word_start (const char *text, + gint begin_offset, + gint step) +{ + gint offset; + char *at_offset; + gunichar current, previous; + gint len; + + offset = begin_offset; + len = g_utf8_strlen (text, -1); + + while (offset > 0 && offset < len) { + at_offset = g_utf8_offset_to_pointer (text, offset); + current = g_utf8_get_char_validated (at_offset, -1); + at_offset = g_utf8_offset_to_pointer (text, offset-1); + previous = g_utf8_get_char_validated (at_offset, -1); + if ((! is_a_seperator (current)) && is_a_seperator (previous)) + break; + offset += step; + } + + return offset; +} + +static gint +find_word_end (const char *text, + gint begin_offset, + gint step) +{ + gint offset; + char *at_offset; + gunichar current, previous; + gint len; + + offset = begin_offset; + len = g_utf8_strlen (text, -1); + + while (offset > 0 && offset < len) { + at_offset = g_utf8_offset_to_pointer (text, offset); + current = g_utf8_get_char_validated (at_offset, -1); + at_offset = g_utf8_offset_to_pointer (text, offset-1); + previous = g_utf8_get_char_validated (at_offset, -1); + if (is_a_seperator (current) && (! is_a_seperator (previous))) + break; + offset += step; + } + + return offset; +} + +static gint +find_sentence_start (const char *text, + gint begin_offset, + gint step) +{ + gint offset, last_word_end, len; + char *at_offset; + gunichar ch; + int i; + + offset = find_word_start (text, begin_offset, step); + len = g_utf8_strlen (text, -1); + + while (offset>0 && offset <len) { + last_word_end = find_word_end (text, offset - 1, -1); + if (last_word_end == 0) + break; + for (i = last_word_end; i < offset; i++) { + at_offset = g_utf8_offset_to_pointer (text, i); + ch = g_utf8_get_char_validated (at_offset, -1); + if (ch == '.' || ch == '!' || ch == '?') + return offset; + } + + offset = find_word_start (text, offset + step, step); + } + + return offset; +} + +static gint +find_sentence_end (const char *text, + gint begin_offset, + gint step) +{ + gint offset; + char *at_offset; + gunichar previous; + gint len; + + offset = begin_offset; + len = g_utf8_strlen (text, -1); + + while (offset > 0 && offset < len) { + at_offset = g_utf8_offset_to_pointer (text, offset - 1); + previous = g_utf8_get_char_validated (at_offset, -1); + if (previous == '.' || previous == '!' || previous == '?') + break; + offset += step; + } + + return offset; +} + +static gint +find_line_start (const char *text, + gint begin_offset, + gint step) +{ + gint offset; + char *at_offset; + gunichar previous; + gint len; + + offset = begin_offset; + len = g_utf8_strlen (text, -1); + + while (offset > 0 && offset < len) { + at_offset = g_utf8_offset_to_pointer (text, offset - 1); + previous = g_utf8_get_char_validated (at_offset, -1); + if (previous == '\n' || previous == '\r') + break; + offset += step; + } + + return offset; +} + +static gint +find_line_end (const char *text, + gint begin_offset, + gint step) +{ + gint offset; + char *at_offset; + gunichar current; + gint len; + + offset = begin_offset; + len = g_utf8_strlen (text, -1); + + while (offset >= 0 && offset < len) { + at_offset = g_utf8_offset_to_pointer (text, offset); + current = g_utf8_get_char_validated (at_offset, -1); + if (current == '\n' || current == '\r') + break; + offset += step; + } + + return offset; +} + static gchar * et_get_text_after_offset (AtkText *text, gint offset, @@ -138,8 +299,50 @@ et_get_text_after_offset (AtkText *text, gint *start_offset, gint *end_offset) { - /* Unimplemented */ - return NULL; + gint start, end, len; + const char *full_text = et_get_full_text (text); + g_return_val_if_fail (full_text, NULL); + + switch (boundary_type) + { + case ATK_TEXT_BOUNDARY_CHAR: + start = offset + 1; + end = offset + 2; + break; + case ATK_TEXT_BOUNDARY_WORD_START: + start = find_word_start (full_text, offset + 1, 1); + end = find_word_start (full_text, start + 1, 1); + break; + case ATK_TEXT_BOUNDARY_WORD_END: + start = find_word_end (full_text, offset + 1, 1); + end = find_word_end (full_text, start + 1, 1); + break; + case ATK_TEXT_BOUNDARY_SENTENCE_START: + start = find_sentence_start (full_text, offset + 1, 1); + end = find_sentence_start (full_text, start + 1, 1); + break; + case ATK_TEXT_BOUNDARY_SENTENCE_END: + start = find_sentence_end (full_text, offset + 1, 1); + end = find_sentence_end (full_text, start + 1, 1); + break; + case ATK_TEXT_BOUNDARY_LINE_START: + start = find_line_start (full_text, offset + 1, 1); + end = find_line_start (full_text, start + 1, 1); + break; + case ATK_TEXT_BOUNDARY_LINE_END: + start = find_line_end (full_text, offset + 1, 1); + end = find_line_end (full_text, start + 1, 1); + break; + defalut: + return NULL; + } + + len = g_utf8_strlen (full_text, -1); + if (start_offset) + *start_offset = MIN (MAX (0, start), len); + if (end_offset) + *end_offset = MIN (MAX (0, end), len); + return et_get_text (text, start, end); } static gchar * @@ -149,8 +352,50 @@ et_get_text_at_offset (AtkText *text, gint *start_offset, gint *end_offset) { - /* Unimplemented */ - return NULL; + gint start, end, len; + const char *full_text = et_get_full_text (text); + g_return_val_if_fail (full_text, NULL); + + switch (boundary_type) + { + case ATK_TEXT_BOUNDARY_CHAR: + start = offset; + end = offset + 1; + break; + case ATK_TEXT_BOUNDARY_WORD_START: + start = find_word_start (full_text, offset - 1, -1); + end = find_word_start (full_text, offset, 1); + break; + case ATK_TEXT_BOUNDARY_WORD_END: + start = find_word_end (full_text, offset, -1); + end = find_word_end (full_text, offset + 1, 1); + break; + case ATK_TEXT_BOUNDARY_SENTENCE_START: + start = find_sentence_start (full_text, offset - 1, -1); + end = find_sentence_start (full_text, offset, 1); + break; + case ATK_TEXT_BOUNDARY_SENTENCE_END: + start = find_sentence_end (full_text, offset, -1); + end = find_sentence_end (full_text, offset + 1, 1); + break; + case ATK_TEXT_BOUNDARY_LINE_START: + start = find_line_start (full_text, offset - 1, -1); + end = find_line_start (full_text, offset, 1); + break; + case ATK_TEXT_BOUNDARY_LINE_END: + start = find_line_end (full_text, offset, -1); + end = find_line_end (full_text, offset + 1, 1); + break; + defalut: + return NULL; + } + + len = g_utf8_strlen (full_text, -1); + if (start_offset) + *start_offset = MIN (MAX (0, start), len); + if (end_offset) + *end_offset = MIN (MAX (0, end), len); + return et_get_text (text, start, end); } static gunichar @@ -172,10 +417,51 @@ et_get_text_before_offset (AtkText *text, gint *start_offset, gint *end_offset) { - /* Unimplemented */ - return NULL; -} + gint start, end, len; + const char *full_text = et_get_full_text (text); + g_return_val_if_fail (full_text, NULL); + + switch (boundary_type) + { + case ATK_TEXT_BOUNDARY_CHAR: + start = offset - 1; + end = offset; + break; + case ATK_TEXT_BOUNDARY_WORD_START: + end = find_word_start (full_text, offset - 1, -1); + start = find_word_start (full_text, end - 1, -1) ; + break; + case ATK_TEXT_BOUNDARY_WORD_END: + end = find_word_end (full_text, offset, -1); + start = find_word_end (full_text, end - 1, -1); + break; + case ATK_TEXT_BOUNDARY_SENTENCE_START: + end = find_sentence_start (full_text, offset, -1); + start = find_sentence_start (full_text, end - 1, -1); + break; + case ATK_TEXT_BOUNDARY_SENTENCE_END: + end = find_sentence_end (full_text, offset, -1); + start = find_sentence_end (full_text, end - 1, -1); + break; + case ATK_TEXT_BOUNDARY_LINE_START: + end = find_line_start (full_text, offset, -1); + start = find_line_start (full_text, end - 1, -1); + break; + case ATK_TEXT_BOUNDARY_LINE_END: + end = find_line_end (full_text, offset, -1); + start = find_line_end (full_text, end - 1, -1); + break; + default: + return NULL; + } + len = g_utf8_strlen (full_text, -1); + if (start_offset) + *start_offset = MIN (MAX (0, start), len); + if (end_offset) + *end_offset = MIN (MAX (0, end), len); + return et_get_text (text, start, end); +} static gint et_get_caret_offset (AtkText *text) @@ -227,7 +513,69 @@ et_get_character_extents (AtkText *text, gint *height, AtkCoordType coords) { - /* Unimplemented */ + GObject *obj; + EText *etext; + GnomeCanvas *canvas; + gint x_widget, y_widget, x_window, y_window; + GdkWindow *window; + GtkWidget *widget; + int index; + int trailing; + PangoRectangle pango_pos; + + g_return_if_fail (ATK_IS_GOBJECT_ACCESSIBLE(text)); + obj = atk_gobject_accessible_get_object (ATK_GOBJECT_ACCESSIBLE (text)); + if (obj == NULL) + return; + g_return_if_fail (E_IS_TEXT (obj)); + etext = E_TEXT(obj); + canvas = GNOME_CANVAS_ITEM(etext)->canvas; + widget = GTK_WIDGET(canvas); + window = widget->window; + gdk_window_get_origin (window, &x_widget, &y_widget); + + pango_layout_index_to_pos (etext->layout, offset, &pango_pos); + pango_pos.x = PANGO_PIXELS (pango_pos.x); + pango_pos.y = PANGO_PIXELS (pango_pos.y); + pango_pos.width = (pango_pos.width + PANGO_SCALE / 2) / PANGO_SCALE; + pango_pos.height = (pango_pos.height + PANGO_SCALE / 2) / PANGO_SCALE; + + *x = pango_pos.x + x_widget; + *y = pango_pos.y + y_widget; + + *width = pango_pos.width; + *height = pango_pos.height; + + if (etext->draw_borders) { + *x += 3; /*BORDER_INDENT;*/ + *y += 3; /*BORDER_INDENT;*/ + } + + *x += etext->xofs; + *y += etext->yofs; + + if (etext->editing) { + *x -= etext->xofs_edit; + *y -= etext->yofs_edit; + } + + *x += etext->cx; + *y += etext->cy; + + if (coords == ATK_XY_WINDOW) { + window = gdk_window_get_toplevel (window); + gdk_window_get_origin (window, &x_window, &y_window); + *x -= x_window; + *y -= y_window; + } + else if (coords == ATK_XY_SCREEN) { + } + else { + *x = 0; + *y = 0; + *height = 0; + *width = 0; + } } @@ -246,8 +594,62 @@ et_get_offset_at_point (AtkText *text, gint y, AtkCoordType coords) { - /* Unimplemented */ - return 0; + GObject *obj; + EText *etext; + GnomeCanvas *canvas; + gint x_widget, y_widget, x_window, y_window; + GdkWindow *window; + GtkWidget *widget; + int index; + int trailing; + + g_return_val_if_fail (ATK_IS_GOBJECT_ACCESSIBLE(text), -1); + obj = atk_gobject_accessible_get_object (ATK_GOBJECT_ACCESSIBLE (text)); + if (obj == NULL) + return -1; + g_return_val_if_fail (E_IS_TEXT (obj), -1); + etext = E_TEXT(obj); + canvas = GNOME_CANVAS_ITEM(etext)->canvas; + widget = GTK_WIDGET(canvas); + window = widget->window; + gdk_window_get_origin (window, &x_widget, &y_widget); + + if (coords == ATK_XY_SCREEN) { + x = x - x_widget; + y = y - y_widget; + } + else if (coords == ATK_XY_WINDOW) { + window = gdk_window_get_toplevel (window); + gdk_window_get_origin (window, &x_window, &y_window); + x = x - x_widget + x_window; + y = y - y_widget + y_window; + } + else + return -1; + + if (etext->draw_borders) { + x -= 3; /*BORDER_INDENT;*/ + y -= 3; /*BORDER_INDENT;*/ + } + + x -= etext->xofs; + y -= etext->yofs; + + if (etext->editing) { + x += etext->xofs_edit; + y += etext->yofs_edit; + } + + x -= etext->cx; + y -= etext->cy; + + pango_layout_xy_to_index (etext->layout, + x * PANGO_SCALE - PANGO_SCALE / 2, + y * PANGO_SCALE - PANGO_SCALE / 2, + &index, + &trailing); + + return g_utf8_pointer_to_offset (etext->text, etext->text + index + trailing); } @@ -348,8 +750,8 @@ et_remove_selection (AtkText *text, g_return_val_if_fail (E_IS_TEXT (obj), FALSE); etext = E_TEXT (obj); - if( selection_num == 0 - && etext->selection_start != etext->selection_end ) { + if (selection_num == 0 + && etext->selection_start != etext->selection_end) { etext->selection_end = etext->selection_start; g_signal_emit_by_name (ATK_OBJECT(text), "text_selection_changed"); return TRUE; @@ -398,15 +800,18 @@ et_set_caret_offset (AtkText *text, if (offset < -1) return FALSE; - else if (offset == -1) - gtk_object_set (GTK_OBJECT (etext), - "cursor_pos", et_get_character_count (text), - NULL); - else - gtk_object_set (GTK_OBJECT (etext), - "cursor_pos", offset, - NULL); - return TRUE; + else { + if (offset == -1) + offset = et_get_character_count (text); + + ETextEventProcessorCommand command; + command.action = E_TEP_MOVE; + command.position = E_TEP_VALUE; + command.value = offset; + command.time = GDK_CURRENT_TIME; + g_signal_emit_by_name (etext->tep, "command", &command); + return TRUE; + } } static gboolean @@ -564,17 +969,84 @@ et_atk_editable_text_iface_init (AtkEditableTextIface *iface) } static void +_et_reposition_cb (ETextModel *model, + ETextModelReposFn fn, + gpointer repos_data, + gpointer user_data) +{ + AtkObject *accessible; + AtkText *text; + + accessible = ATK_OBJECT (user_data); + text = ATK_TEXT (accessible); + + if (fn == e_repos_delete_shift) { + EReposDeleteShift *info = (EReposDeleteShift *) repos_data; + g_signal_emit_by_name (text, "text-changed::delete", info->pos, info->len); + } + else if (fn == e_repos_insert_shift) { + EReposInsertShift *info = (EReposInsertShift *) repos_data; + g_signal_emit_by_name (text, "text-changed::insert", info->pos, info->len); + } +} + +static void +_et_command_cb (ETextEventProcessor *tep, + ETextEventProcessorCommand *command, + gpointer user_data) +{ + AtkObject *accessible; + AtkText *text; + + accessible = ATK_OBJECT (user_data); + text = ATK_TEXT (accessible); + + switch (command->action) { + case E_TEP_MOVE: + g_signal_emit_by_name (text, "text-caret-moved", et_get_caret_offset (text)); + break; + case E_TEP_SELECT: + g_signal_emit_by_name (text, "text-selection-changed"); + break; + } +} + +static void +et_real_initialize (AtkObject *obj, + gpointer data) +{ + GalA11yEText *a11y; + EText *etext; + + ATK_OBJECT_CLASS (parent_class)->initialize (obj, data); + + g_return_if_fail (GAL_A11Y_IS_E_TEXT (obj)); + g_return_if_fail (E_IS_TEXT (data)); + + a11y = GAL_A11Y_E_TEXT (obj); + etext = E_TEXT (data); + + /* Set up signal callbacks */ + g_signal_connect (etext->model, "reposition", + G_CALLBACK (_et_reposition_cb), obj); + + g_signal_connect_after (etext->tep, "command", + (GCallback) _et_command_cb, obj); + + obj->role = ATK_ROLE_TEXT; +} + +static void et_class_init (GalA11yETextClass *klass) { GObjectClass *object_class = G_OBJECT_CLASS (klass); + AtkObjectClass *atk_class = ATK_OBJECT_CLASS (klass); quark_accessible_object = g_quark_from_static_string ("gtk-accessible-object"); - parent_class = g_type_class_ref (PARENT_TYPE); - component_parent_iface = g_type_interface_peek(parent_class, ATK_TYPE_COMPONENT); - object_class->dispose = et_dispose; + atk_class->initialize = et_real_initialize; } static void |