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a11y: implement get_contents_at for Gtk.TextView

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Signed-off-by: Markus Göllnitz <camelcasenick@bewares.it>
This commit is contained in:
Markus Göllnitz 2024-03-03 16:16:43 +01:00
parent 84582ad762
commit ff6451a77e
1 changed files with 34 additions and 0 deletions
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34
gtk/gtktextview.c
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@ -10383,6 +10383,39 @@ gtk_text_view_accessible_text_get_contents (GtkAccessibleText *self,
return g_bytes_new_take (string, strlen (string) + 1);
}
static GBytes *
gtk_text_view_accessible_text_get_contents_at (GtkAccessibleText *self,
unsigned int offset,
GtkAccessibleTextGranularity granularity,
unsigned int *start,
unsigned int *end)
{
GtkTextViewPrivate *priv = GTK_TEXT_VIEW (self)->priv;
GtkTextLayout *text_layout = priv->layout;
GtkTextBuffer *text_buffer;
GtkTextIter iter;
GtkTextLine *line;
PangoLayout *line_layout;
char *string;
unsigned int line_start, line_end, line_offset;
text_buffer = gtk_text_layout_get_buffer (text_layout);
gtk_text_buffer_get_iter_at_offset (text_buffer, &iter, offset);
line = _gtk_text_iter_get_text_line (&iter);
line_offset = gtk_text_iter_get_offset (&iter) - gtk_text_iter_get_line_offset (&iter);
line_layout = gtk_text_layout_get_line_display (text_layout, line, FALSE)->layout;
string = gtk_pango_get_string_at (line_layout, offset - line_offset, granularity, &line_start, &line_end);
if (start != NULL)
*start = line_offset + line_start;
if (end != NULL)
*end = line_offset + line_end;
return g_bytes_new_take (string, strlen (string));
}
static unsigned int
gtk_text_view_accessible_text_get_caret_position (GtkAccessibleText *self)
{
@ -10472,6 +10505,7 @@ static void
gtk_text_view_accessible_text_init (GtkAccessibleTextInterface *iface)
{
iface->get_contents = gtk_text_view_accessible_text_get_contents;
iface->get_contents_at = gtk_text_view_accessible_text_get_contents_at;
iface->get_caret_position = gtk_text_view_accessible_text_get_caret_position;
iface->get_selection = gtk_text_view_accessible_text_get_selection;
iface->get_attributes = gtk_text_view_accessible_text_get_attributes;