static VALUE
textview_forward_display_line_end(VALUE self, VALUE iter)
{
return CBOOL2RVAL(gtk_text_view_forward_display_line_end(_SELF(self), RVAL2ITR(iter)));
}
/**
* gail_text_util_get_text:
* @textutil: A #GailTextUtil
* @layout: A gpointer which is a PangoLayout, a GtkTreeView of NULL
* @function: An enumeration specifying whether to return the text before, at, or
* after the offset.
* @boundary_type: The boundary type.
* @offset: The offset of the text in the GailTextUtil
* @start_offset: Address of location in which the start offset is returned
* @end_offset: Address of location in which the end offset is returned
*
* This function gets the requested substring from the text in the GtkTextUtil.
* The layout is used only for getting the text on a line. The value is NULL
* for a GtkTextView which is not wrapped, is a GtkTextView for a GtkTextView
* which is wrapped and is a PangoLayout otherwise.
*
* Returns: the substring requested
**/
gchar*
gail_text_util_get_text (GailTextUtil *textutil,
gpointer layout,
GailOffsetType function,
AtkTextBoundary boundary_type,
gint offset,
gint *start_offset,
gint *end_offset)
{
GtkTextIter start, end;
gint line_number;
GtkTextBuffer *buffer;
g_return_val_if_fail (GAIL_IS_TEXT_UTIL (textutil), NULL);
buffer = textutil->buffer;
if (buffer == NULL)
{
*start_offset = 0;
*end_offset = 0;
return NULL;
}
if (!gtk_text_buffer_get_char_count (buffer))
{
*start_offset = 0;
*end_offset = 0;
return g_strdup ("");
}
gtk_text_buffer_get_iter_at_offset (buffer, &start, offset);
end = start;
switch (function)
{
case GAIL_BEFORE_OFFSET:
switch (boundary_type)
{
case ATK_TEXT_BOUNDARY_CHAR:
gtk_text_iter_backward_char(&start);
break;
case ATK_TEXT_BOUNDARY_WORD_START:
if (!gtk_text_iter_starts_word (&start))
gtk_text_iter_backward_word_start (&start);
end = start;
gtk_text_iter_backward_word_start(&start);
break;
case ATK_TEXT_BOUNDARY_WORD_END:
if (gtk_text_iter_inside_word (&start) &&
!gtk_text_iter_starts_word (&start))
gtk_text_iter_backward_word_start (&start);
while (!gtk_text_iter_ends_word (&start))
{
if (!gtk_text_iter_backward_char (&start))
break;
}
end = start;
gtk_text_iter_backward_word_start(&start);
while (!gtk_text_iter_ends_word (&start))
{
if (!gtk_text_iter_backward_char (&start))
break;
}
break;
case ATK_TEXT_BOUNDARY_SENTENCE_START:
if (!gtk_text_iter_starts_sentence (&start))
gtk_text_iter_backward_sentence_start (&start);
end = start;
gtk_text_iter_backward_sentence_start (&start);
break;
case ATK_TEXT_BOUNDARY_SENTENCE_END:
if (gtk_text_iter_inside_sentence (&start) &&
!gtk_text_iter_starts_sentence (&start))
gtk_text_iter_backward_sentence_start (&start);
while (!gtk_text_iter_ends_sentence (&start))
{
if (!gtk_text_iter_backward_char (&start))
break;
}
end = start;
gtk_text_iter_backward_sentence_start (&start);
while (!gtk_text_iter_ends_sentence (&start))
{
if (!gtk_text_iter_backward_char (&start))
break;
}
break;
case ATK_TEXT_BOUNDARY_LINE_START:
if (layout == NULL)
{
line_number = gtk_text_iter_get_line (&start);
if (line_number == 0)
{
gtk_text_buffer_get_iter_at_offset (buffer,
&start, 0);
}
else
{
gtk_text_iter_backward_line (&start);
gtk_text_iter_forward_line (&start);
}
end = start;
gtk_text_iter_backward_line (&start);
}
else if GTK_IS_TEXT_VIEW (layout)
{
GtkTextView *view = GTK_TEXT_VIEW (layout);
gtk_text_view_backward_display_line_start (view, &start);
end = start;
gtk_text_view_backward_display_line (view, &start);
}
else if (PANGO_IS_LAYOUT (layout))
get_pango_text_offsets (PANGO_LAYOUT (layout),
buffer,
function,
boundary_type,
offset,
start_offset,
end_offset,
&start,
&end);
break;
case ATK_TEXT_BOUNDARY_LINE_END:
if (layout == NULL)
{
line_number = gtk_text_iter_get_line (&start);
if (line_number == 0)
{
gtk_text_buffer_get_iter_at_offset (buffer,
&start, 0);
end = start;
}
else
{
gtk_text_iter_backward_line (&start);
end = start;
while (!gtk_text_iter_ends_line (&start))
{
if (!gtk_text_iter_backward_char (&start))
break;
}
gtk_text_iter_forward_to_line_end (&end);
}
}
else if GTK_IS_TEXT_VIEW (layout)
{
GtkTextView *view = GTK_TEXT_VIEW (layout);
gtk_text_view_backward_display_line_start (view, &start);
if (!gtk_text_iter_is_start (&start))
{
gtk_text_view_backward_display_line (view, &start);
end = start;
if (!gtk_text_iter_is_start (&start))
{
gtk_text_view_backward_display_line (view, &start);
gtk_text_view_forward_display_line_end (view, &start);
}
gtk_text_view_forward_display_line_end (view, &end);
}
else
{
end = start;
}
}
else if (PANGO_IS_LAYOUT (layout))
get_pango_text_offsets (PANGO_LAYOUT (layout),
buffer,
function,
boundary_type,
offset,
start_offset,
end_offset,
&start,
&end);
break;
}
static int
delete_text_in_gtk_text_view(GtkTextView *text_view, enum UTextOrigin origin,
int former_req_len, int latter_req_len)
{
GtkTextIter current, start, end;
if (!gtk_text_view_get_buffer(text_view))
return -1;
gtk_text_buffer_get_iter_at_mark(gtk_text_view_get_buffer(text_view),
¤t,
gtk_text_buffer_get_mark(gtk_text_view_get_buffer(text_view), "insert"));
start = current;
end = current;
switch (origin) {
case UTextOrigin_Cursor:
if (former_req_len >= 0) {
gtk_text_iter_backward_chars(&start, former_req_len);
} else {
if (former_req_len == UTextExtent_Full)
gtk_text_buffer_get_start_iter(gtk_text_view_get_buffer(text_view), &start);
else if (former_req_len == UTextExtent_Line)
gtk_text_view_backward_display_line_start(text_view, &start);
else
return -1;
}
if (latter_req_len >= 0)
gtk_text_iter_forward_chars(&end, latter_req_len);
else {
if (latter_req_len == UTextExtent_Full)
gtk_text_buffer_get_end_iter(gtk_text_view_get_buffer(text_view), &end);
else if (latter_req_len == UTextExtent_Line)
gtk_text_view_forward_display_line_end(text_view, &end);
else
return -1;
}
break;
case UTextOrigin_Beginning:
gtk_text_buffer_get_start_iter(gtk_text_view_get_buffer(text_view), &start);
end = start;
if (latter_req_len >= 0)
gtk_text_iter_forward_chars(&end, latter_req_len);
else {
if (latter_req_len == UTextExtent_Full)
gtk_text_buffer_get_end_iter(gtk_text_view_get_buffer(text_view), &end);
else if (latter_req_len == UTextExtent_Line)
gtk_text_view_forward_display_line_end(text_view, &end);
else
return -1;
}
break;
case UTextOrigin_End:
gtk_text_buffer_get_end_iter(gtk_text_view_get_buffer(text_view), &end);
start = end;
if (former_req_len >= 0) {
gtk_text_iter_backward_chars(&start, former_req_len);
} else {
if (former_req_len == UTextExtent_Full)
gtk_text_buffer_get_start_iter(gtk_text_view_get_buffer(text_view), &start);
else if (former_req_len == UTextExtent_Line)
gtk_text_view_backward_display_line_start(text_view, &start);
else
return -1;
}
break;
case UTextOrigin_Unspecified:
default:
return -1;
}
gtk_text_buffer_delete_interactive(gtk_text_view_get_buffer(text_view),
&start, &end, gtk_text_view_get_editable(text_view));
return 0;
}
static int
delete_selection_in_gtk_text_view(GtkTextView *text_view,
enum UTextOrigin origin, int former_req_len,
int latter_req_len)
{
GtkTextIter current, start, end, tmp_start, tmp_end;
gboolean cursor_at_beginning = FALSE;
if (!gtk_text_view_get_buffer(text_view))
return -1;
if (gtk_text_buffer_get_selection_bounds(gtk_text_view_get_buffer(text_view),
&start, &end)) {
gtk_text_buffer_get_iter_at_mark(gtk_text_view_get_buffer(text_view),
¤t,
gtk_text_buffer_get_mark(gtk_text_view_get_buffer(text_view),
"insert"));
if (gtk_text_iter_compare(&start, ¤t) == 0)
cursor_at_beginning = TRUE;
} else {
return -1;
}
if (origin == UTextOrigin_Beginning ||
(origin == UTextOrigin_Cursor && cursor_at_beginning)) {
tmp_start = start;
tmp_end = start;
if (latter_req_len >= 0) {
gtk_text_iter_forward_chars(&tmp_end, latter_req_len);
if (gtk_text_iter_compare(&tmp_end, &end) < 0)
end = tmp_end;
} else {
if (latter_req_len == UTextExtent_Line) {
gtk_text_view_forward_display_line_end(text_view, &tmp_end);
if (gtk_text_iter_compare(&tmp_end, &end) < 0)
end = tmp_end;
} else {
if (!(latter_req_len == UTextExtent_Full))
return -1;
}
}
} else if (origin == UTextOrigin_End ||
(origin == UTextOrigin_Cursor && !cursor_at_beginning)) {
tmp_start = end;
tmp_end = end;
if (former_req_len >= 0) {
gtk_text_iter_backward_chars(&tmp_start, former_req_len);
if (gtk_text_iter_compare(&tmp_start, &start) > 0)
start = tmp_start;
} else {
if (former_req_len == UTextExtent_Line) {
gtk_text_view_backward_display_line_start(text_view, &tmp_start);
if (gtk_text_iter_compare(&tmp_start, &start) > 0)
start = tmp_start;
} else {
if (!(former_req_len == UTextExtent_Full))
return -1;
}
}
} else {
return -1;
}
gtk_text_buffer_delete_interactive(gtk_text_view_get_buffer(text_view),
&start, &end, gtk_text_view_get_editable(text_view));
return 0;
}
static int
acquire_text_in_gtk_text_view(GtkTextView *text_view, enum UTextOrigin origin,
int former_req_len, int latter_req_len,
char **former, char **latter)
{
GtkTextIter current, start, end;
if (!gtk_text_view_get_buffer(text_view))
return -1;
gtk_text_buffer_get_iter_at_mark(gtk_text_view_get_buffer(text_view),
¤t,
gtk_text_buffer_get_mark(gtk_text_view_get_buffer(text_view), "insert"));
switch (origin) {
case UTextOrigin_Cursor:
start = current;
end = current;
if (former_req_len >= 0) {
gtk_text_iter_backward_chars(&start, former_req_len);
} else {
if (former_req_len == UTextExtent_Full)
gtk_text_buffer_get_start_iter(gtk_text_view_get_buffer(text_view), &start);
else if (former_req_len == UTextExtent_Line)
gtk_text_view_backward_display_line_start(text_view, &start);
else
return -1;
}
*former = gtk_text_iter_get_slice(&start, ¤t);
if (latter_req_len >= 0)
gtk_text_iter_forward_chars(&end, latter_req_len);
else {
if (latter_req_len == UTextExtent_Full)
gtk_text_buffer_get_end_iter(gtk_text_view_get_buffer(text_view), &end);
else if (latter_req_len == UTextExtent_Line)
gtk_text_view_forward_display_line_end(text_view, &end);
else {
g_free(*former);
return -1;
}
}
*latter = gtk_text_iter_get_slice(¤t, &end);
break;
case UTextOrigin_Beginning:
gtk_text_buffer_get_start_iter(gtk_text_view_get_buffer(text_view), &start);
end = start;
*former = NULL;
if (latter_req_len >= 0)
gtk_text_iter_forward_chars(&end, latter_req_len);
else {
if (latter_req_len == UTextExtent_Full)
gtk_text_buffer_get_end_iter(gtk_text_view_get_buffer(text_view), &end);
else if (latter_req_len == UTextExtent_Line)
gtk_text_view_forward_display_line_end(text_view, &end);
else
return -1;
}
*latter = gtk_text_iter_get_slice(&start, &end);
break;
case UTextOrigin_End:
gtk_text_buffer_get_end_iter(gtk_text_view_get_buffer(text_view), &end);
start = end;
if (former_req_len >= 0) {
gtk_text_iter_backward_chars(&start, former_req_len);
} else {
if (former_req_len == UTextExtent_Full)
gtk_text_buffer_get_start_iter(gtk_text_view_get_buffer(text_view), &start);
else if (former_req_len == UTextExtent_Line)
gtk_text_view_backward_display_line_start(text_view, &start);
else
return -1;
}
*former = gtk_text_iter_get_slice(&start, &end);
*latter = NULL;
break;
case UTextOrigin_Unspecified:
default:
return -1;
}
return 0;
}
