/**
* djvu_text_page_selection:
* @page: #DjvuTextPage instance
* @p: tree to append
* @delimit: character/word/... delimiter
*
* Walks the tree in @p and appends the text with
* djvu_text_page_selection_process() for all s-expressions
* between the start and end fields.
*
* Returns: whether the end was not reached in this subtree
*/
static gboolean
djvu_text_page_selection (DjvuTextPage *page,
miniexp_t p,
int delimit)
{
g_return_val_if_fail (miniexp_consp (p) && miniexp_symbolp
(miniexp_car (p)), FALSE);
if (miniexp_car (p) != page->char_symbol)
delimit |= miniexp_car (p) == page->word_symbol ? 1 : 2;
miniexp_t deeper = miniexp_cddr (miniexp_cdddr (p));
while (deeper != miniexp_nil) {
miniexp_t str = miniexp_car (deeper);
if (miniexp_stringp (str)) {
if (!djvu_text_page_selection_process
(page, p, delimit))
return FALSE;
} else {
if (!djvu_text_page_selection
(page, str, delimit))
return FALSE;
}
delimit = 0;
deeper = miniexp_cdr (deeper);
}
return TRUE;
}
/**
* djvu_text_page_get_selection:
* @page: #DjvuTextPage instance
* @rectangle: #EvRectangle of the selection
*
* Returns: The bounding boxes of the selection
*/
GList *
djvu_text_page_get_selection_region (DjvuTextPage *page,
EvRectangle *rectangle)
{
page->start = miniexp_nil;
page->end = miniexp_nil;
/* Get page->start and page->end filled from selection rectangle */
djvu_text_page_limits (page, page->text_structure, rectangle);
/* Fills page->results with the bouding boxes */
djvu_text_page_selection (DJVU_SELECTION_BOX,
page, page->text_structure, 0);
return g_list_reverse (page->results);
}
char *
djvu_text_page_copy (DjvuTextPage *page,
EvRectangle *rectangle)
{
char* text;
page->start = miniexp_nil;
page->end = miniexp_nil;
djvu_text_page_limits (page, page->text_structure, rectangle);
djvu_text_page_selection (page, page->text_structure, 0);
/* Do not free the string */
text = page->text;
page->text = NULL;
return text;
}
