/* this scrolls the text so that cursor is on the screen */
void edit_scroll_screen_over_cursor (WEdit * edit)
{
int p;
int outby;
int b_extreme, t_extreme, l_extreme, r_extreme;
if (edit->num_widget_lines <= 0 || edit->num_widget_columns <= 0)
return;
r_extreme = EDIT_RIGHT_EXTREME;
l_extreme = EDIT_LEFT_EXTREME;
b_extreme = EDIT_BOTTOM_EXTREME;
t_extreme = EDIT_TOP_EXTREME;
if (edit->found_len) {
b_extreme = max (edit->num_widget_lines / 4, b_extreme);
t_extreme = max (edit->num_widget_lines / 4, t_extreme);
}
if (b_extreme + t_extreme + 1 > edit->num_widget_lines) {
int n;
n = b_extreme + t_extreme;
b_extreme = (b_extreme * (edit->num_widget_lines - 1)) / n;
t_extreme = (t_extreme * (edit->num_widget_lines - 1)) / n;
}
if (l_extreme + r_extreme + 1 > edit->num_widget_columns) {
int n;
n = l_extreme + t_extreme;
l_extreme = (l_extreme * (edit->num_widget_columns - 1)) / n;
r_extreme = (r_extreme * (edit->num_widget_columns - 1)) / n;
}
p = edit_get_col (edit);
edit_update_curs_row (edit);
outby = p + edit->start_col - edit->num_widget_columns + 1 + (r_extreme + edit->found_len);
if (outby > 0)
edit_scroll_right (edit, outby);
outby = l_extreme - p - edit->start_col;
if (outby > 0)
edit_scroll_left (edit, outby);
p = edit->curs_row;
outby = p - edit->num_widget_lines + 1 + b_extreme;
if (outby > 0)
edit_scroll_downward (edit, outby);
outby = t_extreme - p;
if (outby > 0)
edit_scroll_upward (edit, outby);
edit_update_curs_row (edit);
}
void
format_paragraph (WEdit *edit, int force)
{
long p, q;
int size;
unsigned char *t;
int indent = 0;
if (option_word_wrap_line_length < 2)
return;
if (line_is_blank (edit, edit->curs_line))
return;
p = begin_paragraph (edit, force);
q = end_paragraph (edit, force);
indent = test_indent (edit, p, q);
t = get_paragraph (edit, p, q, indent, &size);
if (!t)
return;
if (!force) {
int i;
if (strchr (NO_FORMAT_CHARS_START, *t)) {
g_free (t);
return;
}
for (i = 0; i < size - 1; i++) {
if (t[i] == '\n') {
if (strchr (NO_FORMAT_CHARS_START "\t ", t[i + 1])) {
g_free (t);
return;
}
}
}
}
format_this (t, q - p, indent);
put_paragraph (edit, t, p, indent, size);
g_free (t);
/* Scroll left as much as possible to show the formatted paragraph */
edit_scroll_left (edit, -edit->start_col);
}
/** this scrolls the text so that cursor is on the screen */
void
edit_scroll_screen_over_cursor (WEdit * edit)
{
int p;
int outby;
int b_extreme, t_extreme, l_extreme, r_extreme;
if (edit->widget.lines <= 0 || edit->widget.cols <= 0)
return;
edit->widget.cols -= EDIT_TEXT_HORIZONTAL_OFFSET + option_line_state_width;
edit->widget.lines -= EDIT_TEXT_VERTICAL_OFFSET;
r_extreme = EDIT_RIGHT_EXTREME;
l_extreme = EDIT_LEFT_EXTREME;
b_extreme = EDIT_BOTTOM_EXTREME;
t_extreme = EDIT_TOP_EXTREME;
if (edit->found_len)
{
b_extreme = max (edit->widget.lines / 4, b_extreme);
t_extreme = max (edit->widget.lines / 4, t_extreme);
}
if (b_extreme + t_extreme + 1 > edit->widget.lines)
{
int n;
n = b_extreme + t_extreme;
if (n == 0)
n = 1;
b_extreme = (b_extreme * (edit->widget.lines - 1)) / n;
t_extreme = (t_extreme * (edit->widget.lines - 1)) / n;
}
if (l_extreme + r_extreme + 1 > edit->widget.cols)
{
int n;
n = l_extreme + t_extreme;
if (n == 0)
n = 1;
l_extreme = (l_extreme * (edit->widget.cols - 1)) / n;
r_extreme = (r_extreme * (edit->widget.cols - 1)) / n;
}
p = edit_get_col (edit) + edit->over_col;
edit_update_curs_row (edit);
outby = p + edit->start_col - edit->widget.cols + 1 + (r_extreme + edit->found_len);
if (outby > 0)
edit_scroll_right (edit, outby);
outby = l_extreme - p - edit->start_col;
if (outby > 0)
edit_scroll_left (edit, outby);
p = edit->curs_row;
outby = p - edit->widget.lines + 1 + b_extreme;
if (outby > 0)
edit_scroll_downward (edit, outby);
outby = t_extreme - p;
if (outby > 0)
edit_scroll_upward (edit, outby);
edit_update_curs_row (edit);
edit->widget.lines += EDIT_TEXT_VERTICAL_OFFSET;
edit->widget.cols += EDIT_TEXT_HORIZONTAL_OFFSET + option_line_state_width;
}
void
format_paragraph (WEdit * edit, gboolean force)
{
off_t p, q;
off_t size;
GString *t;
long indent;
unsigned char *t2;
gboolean utf8 = FALSE;
if (option_word_wrap_line_length < 2)
return;
if (edit_line_is_blank (edit, edit->buffer.curs_line))
return;
p = begin_paragraph (edit, force);
q = end_paragraph (edit, force);
indent = test_indent (edit, p, q);
t = get_paragraph (&edit->buffer, p, q, indent != 0);
size = t->len - 1;
if (!force)
{
off_t i;
char *stop_format_chars;
if (option_stop_format_chars != NULL
&& strchr (option_stop_format_chars, t->str[0]) != NULL)
{
g_string_free (t, TRUE);
return;
}
if (option_stop_format_chars == NULL || *option_stop_format_chars == '\0')
stop_format_chars = g_strdup ("\t");
else
stop_format_chars = g_strconcat (option_stop_format_chars, "\t", (char *) NULL);
for (i = 0; i < size - 1; i++)
if (t->str[i] == '\n' && strchr (stop_format_chars, t->str[i + 1]) != NULL)
{
g_free (stop_format_chars);
g_string_free (t, TRUE);
return;
}
g_free (stop_format_chars);
}
t2 = (unsigned char *) g_string_free (t, FALSE);
#ifdef HAVE_CHARSET
utf8 = edit->utf8;
#endif
format_this (t2, q - p, indent, utf8);
put_paragraph (edit, t2, p, indent, size);
g_free ((char *) t2);
/* Scroll left as much as possible to show the formatted paragraph */
edit_scroll_left (edit, -edit->start_col);
}
void
format_paragraph (WEdit * edit, gboolean force)
{
off_t p, q;
long lines;
off_t size;
GString *t;
long indent;
unsigned char *t2;
gboolean utf8 = FALSE;
if (option_word_wrap_line_length < 2)
return;
if (edit_line_is_blank (edit, edit->buffer.curs_line))
return;
p = begin_paragraph (edit, force, &lines);
q = end_paragraph (edit, force);
indent = test_indent (edit, p, q);
t = get_paragraph (&edit->buffer, p, q, indent != 0);
size = t->len - 1;
if (!force)
{
off_t i;
char *stop_format_chars;
if (option_stop_format_chars != NULL
&& strchr (option_stop_format_chars, t->str[0]) != NULL)
{
g_string_free (t, TRUE);
return;
}
if (option_stop_format_chars == NULL || *option_stop_format_chars == '\0')
stop_format_chars = g_strdup ("\t");
else
stop_format_chars = g_strconcat (option_stop_format_chars, "\t", (char *) NULL);
for (i = 0; i < size - 1; i++)
if (t->str[i] == '\n' && strchr (stop_format_chars, t->str[i + 1]) != NULL)
{
g_free (stop_format_chars);
g_string_free (t, TRUE);
return;
}
g_free (stop_format_chars);
}
t2 = (unsigned char *) g_string_free (t, FALSE);
#ifdef HAVE_CHARSET
utf8 = edit->utf8;
#endif
/* scroll up to show 1st line of paragraph */
edit_move_up (edit, lines, TRUE);
/* scroll left as much as possible to show the formatted paragraph */
edit_scroll_left (edit, -edit->start_col);
format_this (t2, q - p, indent, utf8);
put_paragraph (edit, t2, p, indent, size);
g_free ((char *) t2);
/* move to the end of paragraph */
q = end_paragraph (edit, force);
edit_cursor_move (edit, q - edit->buffer.curs1);
/* try move to the start of next paragraph */
if (edit->buffer.curs_line < edit->buffer.lines)
{
edit_execute_cmd (edit, CK_Home, -1);
do
{
edit_execute_cmd (edit, CK_Down, -1);
}
while (edit->buffer.curs_line < edit->buffer.lines
&& edit_line_is_blank (edit, edit->buffer.curs_line));
}
}
/** this scrolls the text so that cursor is on the screen */
void
edit_scroll_screen_over_cursor (WEdit * edit)
{
Widget *w = WIDGET (edit);
long p;
long outby;
int b_extreme, t_extreme, l_extreme, r_extreme;
if (w->lines <= 0 || w->cols <= 0)
return;
w->lines -= EDIT_TEXT_VERTICAL_OFFSET;
w->cols -= EDIT_TEXT_HORIZONTAL_OFFSET + option_line_state_width;
if (!edit->fullscreen)
{
w->x++;
w->cols -= 2;
w->y++;
w->lines -= 2;
}
r_extreme = EDIT_RIGHT_EXTREME;
l_extreme = EDIT_LEFT_EXTREME;
b_extreme = EDIT_BOTTOM_EXTREME;
t_extreme = EDIT_TOP_EXTREME;
if (edit->found_len != 0)
{
b_extreme = max (w->lines / 4, b_extreme);
t_extreme = max (w->lines / 4, t_extreme);
}
if (b_extreme + t_extreme + 1 > w->lines)
{
int n;
n = b_extreme + t_extreme;
if (n == 0)
n = 1;
b_extreme = (b_extreme * (w->lines - 1)) / n;
t_extreme = (t_extreme * (w->lines - 1)) / n;
}
if (l_extreme + r_extreme + 1 > w->cols)
{
int n;
n = l_extreme + t_extreme;
if (n == 0)
n = 1;
l_extreme = (l_extreme * (w->cols - 1)) / n;
r_extreme = (r_extreme * (w->cols - 1)) / n;
}
p = edit_get_col (edit) + edit->over_col;
edit_update_curs_row (edit);
outby = p + edit->start_col - w->cols + 1 + (r_extreme + edit->found_len);
if (outby > 0)
edit_scroll_right (edit, outby);
outby = l_extreme - p - edit->start_col;
if (outby > 0)
edit_scroll_left (edit, outby);
p = edit->curs_row;
outby = p - w->lines + 1 + b_extreme;
if (outby > 0)
edit_scroll_downward (edit, outby);
outby = t_extreme - p;
if (outby > 0)
edit_scroll_upward (edit, outby);
edit_update_curs_row (edit);
w->lines += EDIT_TEXT_VERTICAL_OFFSET;
w->cols += EDIT_TEXT_HORIZONTAL_OFFSET + option_line_state_width;
if (!edit->fullscreen)
{
w->x--;
w->cols += 2;
w->y--;
w->lines += 2;
}
}
