static VALUE
textview_backward_display_line_start(VALUE self, VALUE iter)
{
return CBOOL2RVAL(gtk_text_view_backward_display_line_start(_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;
}
/* Internal function: write a Latin-1 buffer with length to a stream. */
static void
write_buffer_to_stream(strid_t str, gchar *buf, glui32 len)
{
switch(str->type)
{
case STREAM_TYPE_WINDOW:
/* Each window type has a different way of printing to it */
switch(str->window->type)
{
/* Printing to these windows' streams does nothing */
case wintype_Blank:
case wintype_Pair:
case wintype_Graphics:
str->write_count += len;
break;
/* Text grid/buffer windows */
case wintype_TextGrid:
{
gchar *utf8 = convert_latin1_to_utf8(buf, len);
if(utf8 != NULL) {
/* Deal with newlines */
int i;
gchar *line = utf8;
for(i=0; i<len; i++) {
if(utf8[i] == '\n') {
utf8[i] = '\0';
write_utf8_to_window_buffer(str->window, line);
flush_window_buffer(str->window);
/* Move cursor position forward to the next line */
gdk_threads_enter();
GtkTextIter cursor_pos;
GtkTextView *textview = GTK_TEXT_VIEW(str->window->widget);
GtkTextBuffer *buffer = gtk_text_view_get_buffer(textview);
GtkTextMark *cursor_mark = gtk_text_buffer_get_mark(buffer, "cursor_position");
gtk_text_buffer_get_iter_at_mark( buffer, &cursor_pos, cursor_mark);
gtk_text_view_forward_display_line(textview, &cursor_pos);
gtk_text_view_backward_display_line_start(textview, &cursor_pos);
gtk_text_buffer_move_mark(buffer, cursor_mark, &cursor_pos);
gdk_threads_leave();
line = utf8 + (i < len-1 ? (i+1):(len-1));
}
}
/* No more newlines left. */
write_utf8_to_window_buffer(str->window, line);
g_free(utf8);
}
str->write_count += len;
}
break;
case wintype_TextBuffer:
{
gchar *utf8 = convert_latin1_to_utf8(buf, len);
if(utf8 != NULL) {
write_utf8_to_window_buffer(str->window, utf8);
g_free(utf8);
}
}
str->write_count += len;
break;
default:
ILLEGAL_PARAM("Unknown window type: %u", str->window->type);
}
/* Now write the same buffer to the window's echo stream */
if(str->window->echo_stream != NULL)
write_buffer_to_stream(str->window->echo_stream, buf, len);
break;
case STREAM_TYPE_MEMORY:
if(str->unicode && str->ubuffer)
{
int foo = 0;
while(str->mark < str->buflen && foo < len)
str->ubuffer[str->mark++] = (unsigned char)buf[foo++];
}
if(!str->unicode && str->buffer)
{
int copycount = MIN(len, str->buflen - str->mark);
memmove(str->buffer + str->mark, buf, copycount);
str->mark += copycount;
}
/* Move the EOF marker if we wrote past it */
if(str->mark > str->endmark)
str->endmark = str->mark;
str->write_count += len;
break;
case STREAM_TYPE_FILE:
if(str->binary)
{
if(str->unicode)
{
gchar *writebuffer = convert_latin1_to_ucs4be_string(buf, len);
ensure_file_operation(str, filemode_Write);
fwrite(writebuffer, sizeof(gchar), len * 4, str->file_pointer);
g_free(writebuffer);
}
else /* Regular file */
{
ensure_file_operation(str, filemode_Write);
fwrite(buf, sizeof(gchar), len, str->file_pointer);
}
}
else /* Text mode is the same for Unicode and regular files */
{
gchar *utf8 = convert_latin1_to_utf8(buf, len);
if(utf8 != NULL)
{
ensure_file_operation(str, filemode_Write);
g_fprintf(str->file_pointer, "%s", utf8);
g_free(utf8);
}
}
str->write_count += len;
break;
case STREAM_TYPE_RESOURCE:
ILLEGAL(_("Writing to a resource stream is illegal."));
break;
default:
ILLEGAL_PARAM("Unknown stream type: %u", str->type);
}
}
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
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
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;
}
