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authorAlejandro Piñeiro <[email protected]>2014-04-07 17:50:49 +0200
committerraveit65 <[email protected]>2017-11-27 10:13:51 +0100
commitd9b37d653859acc035b8dd9f5f80b58f781ee065 (patch)
tree848b623afaa054449fb2a0a5f0f2b217ac53a5c7 /libview/ev-page-accessible.c
parent148f8e9faef247824949675333f75b3f3a9b7663 (diff)
downloadatril-d9b37d653859acc035b8dd9f5f80b58f781ee065.tar.bz2
atril-d9b37d653859acc035b8dd9f5f80b58f781ee065.tar.xz
a11y: move AtkText implementation from EvViewAccessible to EvPageAccessible
https://bugzilla.gnome.org/show_bug.cgi?id=724965 origin commit: https://git.gnome.org/browse/evince/commit/?h=gnome-3-14&id=2a458a9
Diffstat (limited to 'libview/ev-page-accessible.c')
-rw-r--r--libview/ev-page-accessible.c685
1 files changed, 684 insertions, 1 deletions
diff --git a/libview/ev-page-accessible.c b/libview/ev-page-accessible.c
index 83bb80d8..fa1f3e02 100644
--- a/libview/ev-page-accessible.c
+++ b/libview/ev-page-accessible.c
@@ -22,7 +22,9 @@
#include <config.h>
+#include <glib/gi18n-lib.h>
#include "ev-page-accessible.h"
+#include "ev-view-private.h"
struct _EvPageAccessiblePrivate {
EvViewAccessible *view_accessible;
@@ -35,8 +37,10 @@ enum {
PROP_PAGE,
};
+static void ev_page_accessible_text_iface_init (AtkTextIface *iface);
-G_DEFINE_TYPE (EvPageAccessible, ev_page_accessible, ATK_TYPE_OBJECT)
+G_DEFINE_TYPE_WITH_CODE (EvPageAccessible, ev_page_accessible, ATK_TYPE_OBJECT,
+ G_IMPLEMENT_INTERFACE (ATK_TYPE_TEXT, ev_page_accessible_text_iface_init))
gint
ev_page_accessible_get_page (EvPageAccessible *page_accessible)
@@ -140,6 +144,666 @@ ev_page_accessible_class_init (EvPageAccessibleClass *klass)
}
+EvView *
+ev_page_accessible_get_view (EvPageAccessible *page_accessible)
+{
+ g_return_val_if_fail (EV_IS_PAGE_ACCESSIBLE (page_accessible), NULL);
+
+ return EV_VIEW (gtk_accessible_get_widget (GTK_ACCESSIBLE (page_accessible->priv->view_accessible)));
+}
+
+/* ATs expect to be able to identify sentence boundaries based on content. Valid,
+ * content-based boundaries may be present at the end of a newline, for instance
+ * at the end of a heading within a document. Thus being able to distinguish hard
+ * returns from soft returns is necessary. However, the text we get from Poppler
+ * for non-tagged PDFs has "\n" inserted at the end of each line resulting in a
+ * broken accessibility implementation w.r.t. sentences.
+ */
+static gboolean
+treat_as_soft_return (EvView *view,
+ gint page,
+ PangoLogAttr *log_attrs,
+ gint offset)
+{
+ EvRectangle *areas = NULL;
+ guint n_areas = 0;
+ gdouble line_spacing, this_line_height, next_word_width;
+ EvRectangle *this_line_start;
+ EvRectangle *this_line_end;
+ EvRectangle *next_line_start;
+ EvRectangle *next_line_end;
+ EvRectangle *next_word_end;
+ gint prev_offset, next_offset;
+
+
+ if (!log_attrs[offset].is_white)
+ return FALSE;
+
+ ev_page_cache_get_text_layout (view->page_cache, page, &areas, &n_areas);
+ if (n_areas <= offset + 1)
+ return FALSE;
+
+ prev_offset = offset - 1;
+ next_offset = offset + 1;
+
+ /* In wrapped text, the character at the start of the next line starts a word.
+ * Examples where this condition might fail include bullets and images. But it
+ * also includes things like "(", so also check the next character.
+ */
+ if (!log_attrs[next_offset].is_word_start &&
+ (next_offset + 1 >= n_areas || !log_attrs[next_offset + 1].is_word_start))
+ return FALSE;
+
+ /* In wrapped text, the chars on either side of the newline have very similar heights.
+ * Examples where this condition might fail include a newline at the end of a heading,
+ * and a newline at the end of a paragraph that is followed by a heading.
+ */
+ this_line_end = areas + prev_offset;
+ next_line_start = areas + next_offset;;
+
+ this_line_height = this_line_end->y2 - this_line_end->y1;
+ if (ABS (this_line_height - (next_line_start->y2 - next_line_start->y1)) > 0.25)
+ return FALSE;
+
+ /* If there is significant white space between this line and the next, odds are this
+ * is not a soft return in wrapped text. Lines within a typical paragraph are at most
+ * double-spaced. If the spacing is more than that, assume a hard return is present.
+ */
+ line_spacing = next_line_start->y1 - this_line_end->y2;
+ if (line_spacing - this_line_height > 1)
+ return FALSE;
+
+ /* Lines within a typical paragraph have *reasonably* similar x1 coordinates. But
+ * we cannot count on them being nearly identical. Examples where indentation can
+ * be present in wrapped text include indenting the first line of the paragraph,
+ * and hanging indents (e.g. in the works cited within an academic paper). So we'll
+ * be somewhat tolerant here.
+ */
+ for ( ; prev_offset > 0 && !log_attrs[prev_offset].is_mandatory_break; prev_offset--);
+ this_line_start = areas + prev_offset;
+ if (ABS (this_line_start->x1 - next_line_start->x1) > 20)
+ return FALSE;
+
+ /* Ditto for x2, but this line might be short due to a wide word on the next line. */
+ for ( ; next_offset < n_areas && !log_attrs[next_offset].is_word_end; next_offset++);
+ next_word_end = areas + next_offset;
+ next_word_width = next_word_end->x2 - next_line_start->x1;
+
+ for ( ; next_offset < n_areas && !log_attrs[next_offset + 1].is_mandatory_break; next_offset++);
+ next_line_end = areas + next_offset;
+ if (next_line_end->x2 - (this_line_end->x2 + next_word_width) > 20)
+ return FALSE;
+
+ return TRUE;
+}
+
+static gchar *
+ev_page_accessible_get_substring (AtkText *text,
+ gint start_offset,
+ gint end_offset)
+{
+ EvPageAccessible *self = EV_PAGE_ACCESSIBLE (text);
+ EvView *view = ev_page_accessible_get_view (self);
+ gchar *substring, *normalized;
+ const gchar* page_text;
+
+ if (!view->page_cache)
+ return NULL;
+
+ page_text = ev_page_cache_get_text (view->page_cache, self->priv->page);
+ start_offset = MAX (0, start_offset);
+ if (end_offset < 0 || end_offset > g_utf8_strlen (page_text, -1))
+ end_offset = strlen (page_text);
+
+ substring = g_utf8_substring (page_text, start_offset, end_offset);
+ normalized = g_utf8_normalize (substring, -1, G_NORMALIZE_NFKC);
+ g_free (substring);
+
+ return normalized;
+}
+
+static gchar *
+ev_page_accessible_get_text (AtkText *text,
+ gint start_pos,
+ gint end_pos)
+{
+ return ev_page_accessible_get_substring (text, start_pos, end_pos);
+}
+
+static gunichar
+ev_page_accessible_get_character_at_offset (AtkText *text,
+ gint offset)
+{
+ gchar *string;
+ gunichar unichar;
+
+ string = ev_page_accessible_get_substring (text, offset, offset + 1);
+ unichar = g_utf8_get_char (string);
+ g_free(string);
+
+ return unichar;
+}
+
+static void
+ev_page_accessible_get_range_for_boundary (AtkText *text,
+ AtkTextBoundary boundary_type,
+ gint offset,
+ gint *start_offset,
+ gint *end_offset)
+{
+ EvPageAccessible *self = EV_PAGE_ACCESSIBLE (text);
+ EvView *view = ev_page_accessible_get_view (self);
+ gint start = 0;
+ gint end = 0;
+ PangoLogAttr *log_attrs = NULL;
+ gulong n_attrs;
+
+ if (!view->page_cache)
+ return;
+
+ ev_page_cache_get_text_log_attrs (view->page_cache, self->priv->page, &log_attrs, &n_attrs);
+ if (!log_attrs)
+ return;
+
+ switch (boundary_type) {
+ case ATK_TEXT_BOUNDARY_CHAR:
+ start = offset;
+ end = offset + 1;
+ break;
+ case ATK_TEXT_BOUNDARY_WORD_START:
+ for (start = offset; start >= 0 && !log_attrs[start].is_word_start; start--);
+ for (end = offset + 1; end <= n_attrs && !log_attrs[end].is_word_start; end++);
+ break;
+ case ATK_TEXT_BOUNDARY_SENTENCE_START:
+ for (start = offset; start >= 0; start--) {
+ if (log_attrs[start].is_mandatory_break && treat_as_soft_return (view, self->priv->page, log_attrs, start - 1))
+ continue;
+ if (log_attrs[start].is_sentence_start)
+ break;
+ }
+ for (end = offset + 1; end <= n_attrs; end++) {
+ if (log_attrs[end].is_mandatory_break && treat_as_soft_return (view, self->priv->page, log_attrs, end - 1))
+ continue;
+ if (log_attrs[end].is_sentence_start)
+ break;
+ }
+ break;
+ case ATK_TEXT_BOUNDARY_LINE_START:
+ for (start = offset; start >= 0 && !log_attrs[start].is_mandatory_break; start--);
+ for (end = offset + 1; end <= n_attrs && !log_attrs[end].is_mandatory_break; end++);
+ break;
+ default:
+ /* The "END" boundary types are deprecated */
+ break;
+ }
+
+ *start_offset = start;
+ *end_offset = end;
+}
+
+static gchar *
+ev_page_accessible_get_text_at_offset (AtkText *text,
+ gint offset,
+ AtkTextBoundary boundary_type,
+ gint *start_offset,
+ gint *end_offset)
+{
+ gchar *retval;
+
+ ev_page_accessible_get_range_for_boundary (text, boundary_type, offset, start_offset, end_offset);
+ retval = ev_page_accessible_get_substring (text, *start_offset, *end_offset);
+
+ /* If newlines appear inside the text of a sentence (i.e. between the start and
+ * end offsets returned by ev_page_accessible_get_substring), it interferes with
+ * the prosody of text-to-speech based-solutions such as a screen reader because
+ * speech synthesizers tend to pause after the newline char as if it were the end
+ * of the sentence.
+ */
+ if (boundary_type == ATK_TEXT_BOUNDARY_SENTENCE_START)
+ g_strdelimit (retval, "\n", ' ');
+
+ return retval;
+}
+
+static gint
+ev_page_accessible_get_caret_offset (AtkText *text)
+{
+ EvPageAccessible *self = EV_PAGE_ACCESSIBLE (text);
+ EvView *view = ev_page_accessible_get_view (self);
+
+ if (self->priv->page == view->cursor_page && view->caret_enabled)
+ return view->cursor_offset;
+
+ return -1;
+}
+
+static gboolean
+ev_page_accessible_set_caret_offset (AtkText *text, gint offset)
+{
+ EvPageAccessible *self = EV_PAGE_ACCESSIBLE (text);
+ EvView *view = ev_page_accessible_get_view (self);
+
+ ev_view_set_caret_cursor_position (view,
+ self->priv->page,
+ offset);
+
+ return TRUE;
+}
+
+static gint
+ev_page_accessible_get_character_count (AtkText *text)
+{
+ EvPageAccessible *self = EV_PAGE_ACCESSIBLE (text);
+ EvView *view = ev_page_accessible_get_view (self);
+ gint retval;
+
+ retval = g_utf8_strlen (ev_page_cache_get_text (view->page_cache, self->priv->page), -1);
+
+ return retval;
+}
+
+static gboolean
+get_selection_bounds (EvView *view,
+ EvViewSelection *selection,
+ gint *start_offset,
+ gint *end_offset)
+{
+ cairo_rectangle_int_t rect;
+ gint start, end;
+
+ if (!selection->covered_region || cairo_region_is_empty (selection->covered_region))
+ return FALSE;
+
+ cairo_region_get_rectangle (selection->covered_region, 0, &rect);
+ start = _ev_view_get_caret_cursor_offset_at_doc_point (view,
+ selection->page,
+ rect.x / view->scale,
+ (rect.y + (rect.height / 2)) / view->scale);
+ if (start == -1)
+ return FALSE;
+
+ cairo_region_get_rectangle (selection->covered_region,
+ cairo_region_num_rectangles (selection->covered_region) - 1,
+ &rect);
+ end = _ev_view_get_caret_cursor_offset_at_doc_point (view,
+ selection->page,
+ (rect.x + rect.width) / view->scale,
+ (rect.y + (rect.height / 2)) / view->scale);
+ if (end == -1)
+ return FALSE;
+
+ *start_offset = start;
+ *end_offset = end;
+
+ return TRUE;
+}
+
+static gint
+ev_page_accessible_get_n_selections (AtkText *text)
+{
+ EvPageAccessible *self = EV_PAGE_ACCESSIBLE (text);
+ EvView *view = ev_page_accessible_get_view (self);
+ gint n_selections = 0;
+ GList *l;
+
+ if (!EV_IS_SELECTION (view->document) || !view->selection_info.selections)
+ return 0;
+
+ for (l = view->selection_info.selections; l != NULL; l = l->next) {
+ EvViewSelection *selection = (EvViewSelection *)l->data;
+
+ if (selection->page != self->priv->page)
+ continue;
+
+ n_selections = 1;
+ break;
+ }
+
+ return n_selections;
+}
+
+static gchar *
+ev_page_accessible_get_selection (AtkText *text,
+ gint selection_num,
+ gint *start_pos,
+ gint *end_pos)
+{
+ EvPageAccessible *self = EV_PAGE_ACCESSIBLE (text);
+ EvView *view = ev_page_accessible_get_view (self);
+ gchar *selected_text = NULL;
+ gchar *normalized_text = NULL;
+ GList *l;
+
+ *start_pos = -1;
+ *end_pos = -1;
+
+ if (selection_num != 0)
+ return NULL;
+
+ if (!EV_IS_SELECTION (view->document) || !view->selection_info.selections)
+ return NULL;
+
+ for (l = view->selection_info.selections; l != NULL; l = l->next) {
+ EvViewSelection *selection = (EvViewSelection *)l->data;
+ gint start, end;
+
+ if (selection->page != self->priv->page)
+ continue;
+
+ if (get_selection_bounds (view, selection, &start, &end) && start != end) {
+ EvPage *page;
+
+ page = ev_document_get_page (view->document, selection->page);
+
+ ev_document_doc_mutex_lock ();
+ selected_text = ev_selection_get_selected_text (EV_SELECTION (view->document),
+ page,
+ selection->style,
+ &(selection->rect));
+
+ ev_document_doc_mutex_unlock ();
+
+ g_object_unref (page);
+
+ *start_pos = start;
+ *end_pos = end;
+ }
+
+ break;
+ }
+
+ if (selected_text) {
+ normalized_text = g_utf8_normalize (selected_text, -1, G_NORMALIZE_NFKC);
+ g_free (selected_text);
+ }
+
+ return normalized_text;
+}
+
+static AtkAttributeSet *
+add_attribute (AtkAttributeSet *attr_set,
+ AtkTextAttribute attr_type,
+ gchar *attr_value)
+{
+ AtkAttribute *attr = g_new (AtkAttribute, 1);
+
+ attr->name = g_strdup (atk_text_attribute_get_name (attr_type));
+ attr->value = attr_value;
+
+ return g_slist_prepend (attr_set, attr);
+}
+
+static AtkAttributeSet *
+get_run_attributes (PangoAttrList *attrs,
+ const gchar *text,
+ gint offset,
+ gint *start_offset,
+ gint *end_offset)
+{
+ AtkAttributeSet *atk_attr_set = NULL;
+ PangoAttrString *pango_string;
+ PangoAttrInt *pango_int;
+ PangoAttrColor *pango_color;
+ PangoAttrIterator *iter;
+ gint i, start, end;
+ gboolean has_attrs = FALSE;
+ glong text_length;
+ gchar *attr_value;
+
+ text_length = g_utf8_strlen (text, -1);
+ if (offset < 0 || offset >= text_length)
+ return NULL;
+
+ /* Check if there are attributes for the offset,
+ * and set the attributes range if positive */
+ iter = pango_attr_list_get_iterator (attrs);
+ i = g_utf8_offset_to_pointer (text, offset) - text;
+
+ do {
+ pango_attr_iterator_range (iter, &start, &end);
+ if (i >= start && i < end) {
+ *start_offset = g_utf8_pointer_to_offset (text, text + start);
+ if (end == G_MAXINT) /* Last iterator */
+ end = text_length;
+ *end_offset = g_utf8_pointer_to_offset (text, text + end);
+ has_attrs = TRUE;
+ }
+ } while (!has_attrs && pango_attr_iterator_next (iter));
+
+ if (!has_attrs) {
+ pango_attr_iterator_destroy (iter);
+ return NULL;
+ }
+
+ /* Create the AtkAttributeSet from the Pango attributes */
+ pango_string = (PangoAttrString *) pango_attr_iterator_get (iter, PANGO_ATTR_FAMILY);
+ if (pango_string) {
+ attr_value = g_strdup (pango_string->value);
+ atk_attr_set = add_attribute (atk_attr_set, ATK_TEXT_ATTR_FAMILY_NAME, attr_value);
+ }
+
+ pango_int = (PangoAttrInt *) pango_attr_iterator_get (iter, PANGO_ATTR_SIZE);
+ if (pango_int) {
+ attr_value = g_strdup_printf ("%i", pango_int->value / PANGO_SCALE);
+ atk_attr_set = add_attribute (atk_attr_set, ATK_TEXT_ATTR_SIZE, attr_value);
+ }
+
+ pango_int = (PangoAttrInt *) pango_attr_iterator_get (iter, PANGO_ATTR_UNDERLINE);
+ if (pango_int) {
+ atk_attr_set = add_attribute (atk_attr_set,
+ ATK_TEXT_ATTR_UNDERLINE,
+ g_strdup (atk_text_attribute_get_value (ATK_TEXT_ATTR_UNDERLINE,
+ pango_int->value)));
+ }
+
+ pango_color = (PangoAttrColor *) pango_attr_iterator_get (iter, PANGO_ATTR_FOREGROUND);
+ if (pango_color) {
+ attr_value = g_strdup_printf ("%u,%u,%u",
+ pango_color->color.red,
+ pango_color->color.green,
+ pango_color->color.blue);
+ atk_attr_set = add_attribute (atk_attr_set, ATK_TEXT_ATTR_FG_COLOR, attr_value);
+ }
+
+ pango_attr_iterator_destroy (iter);
+
+ return atk_attr_set;
+}
+
+static AtkAttributeSet*
+ev_page_accessible_get_run_attributes (AtkText *text,
+ gint offset,
+ gint *start_offset,
+ gint *end_offset)
+{
+ EvPageAccessible *self = EV_PAGE_ACCESSIBLE (text);
+ EvView *view = ev_page_accessible_get_view (self);
+ PangoAttrList *attrs;
+ const gchar *page_text;
+
+ if (offset < 0)
+ return NULL;
+
+ if (!view->page_cache)
+ return NULL;
+
+ page_text = ev_page_cache_get_text (view->page_cache, self->priv->page);
+ if (!page_text)
+ return NULL;
+
+ attrs = ev_page_cache_get_text_attrs (view->page_cache, self->priv->page);
+ if (!attrs)
+ return NULL;
+
+ return get_run_attributes (attrs, page_text, offset, start_offset, end_offset);
+}
+
+static AtkAttributeSet*
+ev_page_accessible_get_default_attributes (AtkText *text)
+{
+ /* No default attributes */
+ return NULL;
+}
+
+static void
+ev_page_accessible_get_character_extents (AtkText *text,
+ gint offset,
+ gint *x,
+ gint *y,
+ gint *width,
+ gint *height,
+ AtkCoordType coords)
+{
+ EvPageAccessible *self = EV_PAGE_ACCESSIBLE (text);
+ EvView *view = ev_page_accessible_get_view (self);
+ GtkWidget *toplevel;
+ EvRectangle *areas = NULL;
+ EvRectangle *doc_rect;
+ guint n_areas = 0;
+ gint x_widget, y_widget;
+ GdkRectangle view_rect;
+
+ if (!view->page_cache)
+ return;
+
+ ev_page_cache_get_text_layout (view->page_cache, self->priv->page, &areas, &n_areas);
+ if (!areas || offset >= n_areas)
+ return;
+
+ doc_rect = areas + offset;
+ _ev_view_transform_doc_rect_to_view_rect (view, self->priv->page, doc_rect, &view_rect);
+ view_rect.x -= view->scroll_x;
+ view_rect.y -= view->scroll_y;
+
+ toplevel = gtk_widget_get_toplevel (GTK_WIDGET (view));
+ gtk_widget_translate_coordinates (GTK_WIDGET (view), toplevel, 0, 0, &x_widget, &y_widget);
+ view_rect.x += x_widget;
+ view_rect.y += y_widget;
+
+ if (coords == ATK_XY_SCREEN) {
+ gint x_window, y_window;
+
+ gdk_window_get_origin (gtk_widget_get_window (toplevel), &x_window, &y_window);
+ view_rect.x += x_window;
+ view_rect.y += y_window;
+ }
+
+ *x = view_rect.x;
+ *y = view_rect.y;
+ *width = view_rect.width;
+ *height = view_rect.height;
+}
+
+static gint
+ev_page_accessible_get_offset_at_point (AtkText *text,
+ gint x,
+ gint y,
+ AtkCoordType coords)
+{
+ EvPageAccessible *self = EV_PAGE_ACCESSIBLE (text);
+ EvView *view = ev_page_accessible_get_view (self);
+ GtkWidget *toplevel;
+ EvRectangle *areas = NULL;
+ EvRectangle *rect = NULL;
+ guint n_areas = 0;
+ guint i;
+ gint x_widget, y_widget;
+ gint offset=-1;
+ GdkPoint view_point;
+ gdouble doc_x, doc_y;
+ GtkBorder border;
+ GdkRectangle page_area;
+
+ if (!view->page_cache)
+ return -1;
+
+ ev_page_cache_get_text_layout (view->page_cache, self->priv->page, &areas, &n_areas);
+ if (!areas)
+ return -1;
+
+ view_point.x = x;
+ view_point.y = y;
+ toplevel = gtk_widget_get_toplevel (GTK_WIDGET (self));
+ gtk_widget_translate_coordinates (GTK_WIDGET (self), toplevel, 0, 0, &x_widget, &y_widget);
+ view_point.x -= x_widget;
+ view_point.y -= y_widget;
+
+ if (coords == ATK_XY_SCREEN) {
+ gint x_window, y_window;
+
+ gdk_window_get_origin (gtk_widget_get_window (toplevel), &x_window, &y_window);
+ view_point.x -= x_window;
+ view_point.y -= y_window;
+ }
+
+ ev_view_get_page_extents (view, self->priv->page, &page_area, &border);
+ _ev_view_transform_view_point_to_doc_point (view, &view_point, &page_area, &doc_x, &doc_y);
+
+ for (i = 0; i < n_areas; i++) {
+ rect = areas + i;
+ if (doc_x >= rect->x1 && doc_x <= rect->x2 &&
+ doc_y >= rect->y1 && doc_y <= rect->y2)
+ offset = i;
+ }
+
+ return offset;
+}
+
+/* ATK allows for multiple, non-contiguous selections within a single AtkText
+ * object. Unless and until Evince supports this, selection numbers are ignored.
+ */
+static gboolean
+ev_page_accessible_remove_selection (AtkText *text,
+ gint selection_num)
+{
+ EvPageAccessible *self = EV_PAGE_ACCESSIBLE (text);
+ EvView *view = ev_page_accessible_get_view (self);
+
+ if (ev_view_get_has_selection (view)) {
+ _ev_view_clear_selection (view);
+ return TRUE;
+ }
+
+ return FALSE;
+}
+
+static gboolean
+ev_page_accessible_set_selection (AtkText *text,
+ gint selection_num,
+ gint start_pos,
+ gint end_pos)
+{
+ EvPageAccessible *self = EV_PAGE_ACCESSIBLE (text);
+ EvView *view = ev_page_accessible_get_view (self);
+ EvRectangle *areas = NULL;
+ guint n_areas = 0;
+ GdkRectangle start_rect, end_rect;
+ GdkPoint start_point, end_point;
+
+ ev_page_cache_get_text_layout (view->page_cache, self->priv->page, &areas, &n_areas);
+ if (start_pos < 0 || end_pos >= n_areas)
+ return FALSE;
+
+ _ev_view_transform_doc_rect_to_view_rect (view, self->priv->page, areas + start_pos, &start_rect);
+ _ev_view_transform_doc_rect_to_view_rect (view, self->priv->page, areas + end_pos - 1, &end_rect);
+ start_point.x = start_rect.x;
+ start_point.y = start_rect.y;
+ end_point.x = end_rect.x + end_rect.width;
+ end_point.y = end_rect.y + end_rect.height;
+ _ev_view_set_selection (view, &start_point, &end_point);
+
+ return TRUE;
+}
+
+static gboolean
+ev_page_accessible_add_selection (AtkText *text,
+ gint start_pos,
+ gint end_pos)
+{
+ return ev_page_accessible_set_selection (text, 0, start_pos, end_pos);
+
+}
+
static void
ev_page_accessible_init (EvPageAccessible *page)
{
@@ -148,6 +812,25 @@ ev_page_accessible_init (EvPageAccessible *page)
page->priv = G_TYPE_INSTANCE_GET_PRIVATE (page, EV_TYPE_PAGE_ACCESSIBLE, EvPageAccessiblePrivate);
}
+static void
+ev_page_accessible_text_iface_init (AtkTextIface *iface)
+{
+ iface->get_text = ev_page_accessible_get_text;
+ iface->get_text_at_offset = ev_page_accessible_get_text_at_offset;
+ iface->get_character_at_offset = ev_page_accessible_get_character_at_offset;
+ iface->get_caret_offset = ev_page_accessible_get_caret_offset;
+ iface->set_caret_offset = ev_page_accessible_set_caret_offset;
+ iface->get_character_count = ev_page_accessible_get_character_count;
+ iface->get_n_selections = ev_page_accessible_get_n_selections;
+ iface->get_selection = ev_page_accessible_get_selection;
+ iface->remove_selection = ev_page_accessible_remove_selection;
+ iface->add_selection = ev_page_accessible_add_selection;
+ iface->get_run_attributes = ev_page_accessible_get_run_attributes;
+ iface->get_default_attributes = ev_page_accessible_get_default_attributes;
+ iface->get_character_extents = ev_page_accessible_get_character_extents;
+ iface->get_offset_at_point = ev_page_accessible_get_offset_at_point;
+}
+
EvPageAccessible *
ev_page_accessible_new (EvViewAccessible *view_accessible,
gint page)
generated by cgit v1.2.1 (git 2.18.0) at 2024-04-27 09:46:49 +0000