void do_first_line(void)
{
size_t pww_save = openfile->placewewant;
+
openfile->current = openfile->fileage;
- openfile->placewewant = 0;
openfile->current_x = 0;
+ openfile->placewewant = 0;
+
if (openfile->edittop != openfile->fileage ||
need_vertical_update(pww_save))
edit_update(TOP);
void do_last_line(void)
{
size_t pww_save = openfile->placewewant;
+
openfile->current = openfile->filebot;
- openfile->placewewant = 0;
openfile->current_x = 0;
+ openfile->placewewant = 0;
+
if (openfile->edittop->lineno + (editwinrows / 2) !=
openfile->filebot->lineno || need_vertical_update(pww_save))
edit_update(CENTER);
void do_home(void)
{
size_t pww_save = openfile->placewewant;
+
#ifndef NANO_SMALL
if (ISSET(SMART_HOME)) {
size_t current_x_save = openfile->current_x;
#ifndef NANO_SMALL
}
#endif
+
check_statusblank();
+
if (need_horizontal_update(pww_save))
update_line(openfile->current, openfile->current_x);
}
void do_end(void)
{
size_t pww_save = openfile->placewewant;
+
openfile->current_x = strlen(openfile->current->data);
openfile->placewewant = xplustabs();
+
check_statusblank();
+
if (need_horizontal_update(pww_save))
update_line(openfile->current, openfile->current_x);
}
void do_page_up(void)
{
- size_t pww_save = openfile->placewewant;
- const filestruct *current_save = openfile->current;
#ifndef DISABLE_WRAPPING
wrap_reset();
#endif
* and put the cursor at the beginning of the line. */
if (openfile->edittop == openfile->fileage) {
openfile->current = openfile->fileage;
+ openfile->current_x = 0;
openfile->placewewant = 0;
} else {
- edit_scroll(UP, editwinrows - 2);
-
#ifndef NANO_SMALL
/* If we're in smooth scrolling mode and there's at least one
* page of text left, move the current line of the edit window
* up a page. */
if (ISSET(SMOOTH_SCROLL) && openfile->current->lineno >
editwinrows - 2) {
- int i;
- for (i = 0; i < editwinrows - 2; i++)
+ int i = 0;
+ for (; i < editwinrows - 2; i++)
openfile->current = openfile->current->prev;
+
+ /* Get the equivalent x-coordinate of the new line. */
+ openfile->current_x = actual_x(openfile->current->data,
+ openfile->placewewant);
}
/* If we're not in smooth scrolling mode or there isn't at least
* one page of text left, put the cursor at the beginning of the
else {
#endif
openfile->current = openfile->edittop;
+ openfile->current_x = 0;
openfile->placewewant = 0;
#ifndef NANO_SMALL
}
#endif
- }
-
- /* Get the equivalent x-coordinate of the new line. */
- openfile->current_x = actual_x(openfile->current->data,
- openfile->placewewant);
- /* Update all the lines that need to be updated. */
- edit_redraw(current_save, pww_save);
+ edit_scroll(UP, editwinrows - 2);
+ }
check_statusblank();
}
void do_page_down(void)
{
- size_t pww_save = openfile->placewewant;
- const filestruct *current_save = openfile->current;
#ifndef DISABLE_WRAPPING
wrap_reset();
#endif
if (openfile->edittop->lineno + editwinrows >
openfile->filebot->lineno) {
openfile->current = openfile->filebot;
+ openfile->current_x = 0;
openfile->placewewant = 0;
} else {
- edit_scroll(DOWN, editwinrows - 2);
-
#ifndef NANO_SMALL
/* If we're in smooth scrolling mode and there's at least one
* page of text left, move the current line of the edit window
* down a page. */
if (ISSET(SMOOTH_SCROLL) && openfile->current->lineno +
editwinrows - 2 <= openfile->filebot->lineno) {
- int i;
- for (i = 0; i < editwinrows - 2; i++)
+ int i = 0;
+ for (; i < editwinrows - 2; i++)
openfile->current = openfile->current->next;
+
+ /* Get the equivalent x-coordinate of the new line. */
+ openfile->current_x = actual_x(openfile->current->data,
+ openfile->placewewant);
}
/* If we're not in smooth scrolling mode or there isn't at least
* one page of text left, put the cursor at the beginning of the
else {
#endif
openfile->current = openfile->edittop;
+ openfile->current_x = 0;
openfile->placewewant = 0;
#ifndef NANO_SMALL
}
#endif
- }
- /* Get the equivalent x-coordinate of the new line. */
- openfile->current_x = actual_x(openfile->current->data,
- openfile->placewewant);
-
- /* Update all the lines that need to be updated. */
- edit_redraw(current_save, pww_save);
+ edit_scroll(DOWN, editwinrows - 2);
+ }
check_statusblank();
}
#endif
check_statusblank();
+ /* If we're at the top of the file, get out. */
if (openfile->current->prev == NULL)
return;
ISSET(SMOOTH_SCROLL) ? 1 :
#endif
editwinrows / 2);
-
- /* Update the lines left alone by edit_scroll(): the line we were on
- * before and the line we're on now. The former needs to be redrawn
- * if we're not on the first page, and the latter needs to be
- * drawn. */
- if (need_vertical_update(0))
- update_line(openfile->current->next, 0);
- update_line(openfile->current, openfile->current_x);
+ /* Otherwise, update the line we were on before and the line we're
+ * on now. The former needs to be redrawn if we're not on the first
+ * page, and the latter needs to be redrawn unconditionally. */
+ else {
+ if (need_vertical_update(0))
+ update_line(openfile->current->next, 0);
+ update_line(openfile->current, openfile->current_x);
+ }
}
void do_down(void)
#endif
check_statusblank();
+ /* If we're at the bottom of the file, get out. */
if (openfile->current->next == NULL)
return;
ISSET(SMOOTH_SCROLL) ? 1 :
#endif
editwinrows / 2);
-
- /* Update the lines left alone by edit_scroll(): the line we were on
- * before and the line we're on now. The former needs to be redrawn
- * if we're not on the first page, and the latter needs to be
- * drawn. */
- if (need_vertical_update(0))
- update_line(openfile->current->prev, 0);
- update_line(openfile->current, openfile->current_x);
+ /* Otherwise, update the line we were on before and the line we're
+ * on now. The former needs to be redrawn if we're not on the first
+ * page, and the latter needs to be redrawn unconditionally. */
+ else {
+ if (need_vertical_update(0))
+ update_line(openfile->current->prev, 0);
+ update_line(openfile->current, openfile->current_x);
+ }
}
void do_left(bool allow_update)
do_up();
openfile->current_x = strlen(openfile->current->data);
}
+
openfile->placewewant = xplustabs();
+
check_statusblank();
+
if (allow_update && need_horizontal_update(pww_save))
update_line(openfile->current, openfile->current_x);
}
void do_right(bool allow_update)
{
size_t pww_save = openfile->placewewant;
+
assert(openfile->current_x <= strlen(openfile->current->data));
if (openfile->current->data[openfile->current_x] != '\0')
do_down();
openfile->current_x = 0;
}
+
openfile->placewewant = xplustabs();
+
check_statusblank();
+
if (allow_update && need_horizontal_update(pww_save))
update_line(openfile->current, openfile->current_x);
}