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| author | Antia Puentes <[email protected]> | 2013-07-10 19:18:14 +0200 |
|---|---|---|
| committer | raveit65 <[email protected]> | 2017-09-06 18:25:34 +0200 |
| commit | 90c4cd3a61b6368a97adb47a538b3f3e9506bf84 (patch) | |
| tree | 2b39f8ea0d6f838ee799a3498892a75eda96b4f8 /libview/ev-view-accessible.c | |
| parent | f2a0613eaeddc32f0393044ce06bc1709de44842 (diff) | |
| download | atril-90c4cd3a61b6368a97adb47a538b3f3e9506bf84.tar.bz2 atril-90c4cd3a61b6368a97adb47a538b3f3e9506bf84.tar.xz | |
ev-view-accessible: Rewrite get_run_attributes to return the text attributes from the document
https://bugzilla.gnome.org/show_bug.cgi?id=639932
origin commit:
https://git.gnome.org/browse/evince/commit/?h=gnome-3-10&id=f8a0ce3
Diffstat (limited to 'libview/ev-view-accessible.c')
| -rw-r--r-- | libview/ev-view-accessible.c | 124 |
1 files changed, 111 insertions, 13 deletions
diff --git a/libview/ev-view-accessible.c b/libview/ev-view-accessible.c index 6fd633ae..ee35c9a7 100644 --- a/libview/ev-view-accessible.c +++ b/libview/ev-view-accessible.c @@ -349,29 +349,127 @@ ev_view_accessible_set_caret_offset (AtkText *text, gint offset) return TRUE; } +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_view_accessible_get_run_attributes (AtkText *text, - gint offset, - gint *start_offset, - gint *end_offset) + gint offset, + gint *start_offset, + gint *end_offset) { - GtkWidget *widget; - GtkTextBuffer *buffer; - AtkAttributeSet *retval; + EvView *view; + GtkWidget *widget; + PangoAttrList *attrs; + const gchar *page_text; + + if (offset < 0) + return NULL; widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text)); - if (widget == NULL) - /* State is defunct */ + if (!widget) return NULL; - buffer = ev_view_accessible_get_text_buffer (EV_VIEW_ACCESSIBLE (text), EV_VIEW (widget)); - if (!buffer) + view = EV_VIEW (widget); + if (!view->page_cache) return NULL; - retval = gail_misc_buffer_get_run_attributes (buffer, offset, - start_offset, end_offset); + page_text = ev_page_cache_get_text (view->page_cache, view->current_page); + if (!page_text) + return NULL; - return retval; + attrs = ev_page_cache_get_text_attrs (view->page_cache, view->current_page); + if (!attrs) + return NULL; + + return get_run_attributes (attrs, page_text, offset, start_offset, end_offset); } static AtkAttributeSet* |