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authorJeremy Kerr <jk@ozlabs.org>2013-11-19 14:18:28 +1100
committerJeremy Kerr <jk@ozlabs.org>2013-11-22 10:45:54 +0800
commite921d7bc8ed3980494518d22b0e754a6b3a603b1 (patch)
treec5c35d0737b7be7b3c672c3a620793ae7e0567b5
parent4a624766022c2f2dd833f74751aab4b502ef6e06 (diff)
downloadtalos-petitboot-e921d7bc8ed3980494518d22b0e754a6b3a603b1.tar.gz
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ui/ncurses/widgets: Add widget focus offset query
When we have widgets that are larger than the screen, we'd like to scroll to the currently-focussed component of that widget. This change introduces a widget_focus_y function, which returns the y offset of the field's focus. Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
-rw-r--r--ui/ncurses/nc-widgets.c23
-rw-r--r--ui/ncurses/nc-widgets.h1
2 files changed, 24 insertions, 0 deletions
diff --git a/ui/ncurses/nc-widgets.c b/ui/ncurses/nc-widgets.c
index d96480e..583e5ed 100644
--- a/ui/ncurses/nc-widgets.c
+++ b/ui/ncurses/nc-widgets.c
@@ -85,10 +85,12 @@ struct nc_widget {
bool (*process_key)(struct nc_widget *, FORM *, int);
void (*set_visible)(struct nc_widget *, bool);
void (*move)(struct nc_widget *, int, int);
+ void (*field_focus)(struct nc_widget *, FIELD *);
int focussed_attr;
int unfocussed_attr;
int height;
int width;
+ int focus_y;
int x;
int y;
};
@@ -414,6 +416,19 @@ static void select_move(struct nc_widget *widget, int y, int x)
field_move(select->options[i].field, y + i, x);
}
+static void select_field_focus(struct nc_widget *widget, FIELD *field)
+{
+ struct nc_widget_select *select = to_select(widget);
+ int i;
+
+ for (i = 0; i < select->n_options; i++) {
+ if (field != select->options[i].field)
+ continue;
+ widget->focus_y = i;
+ return;
+ }
+}
+
static int select_destructor(void *ptr)
{
struct nc_widget_select *select = ptr;
@@ -438,6 +453,7 @@ struct nc_widget_select *widget_new_select(struct nc_widgetset *set,
select->widget.process_key = select_process_key;
select->widget.set_visible = select_set_visible;
select->widget.move = select_move;
+ select->widget.field_focus = select_field_focus;
select->widget.focussed_attr = A_REVERSE;
select->widget.unfocussed_attr = A_NORMAL;
select->top = y;
@@ -622,6 +638,8 @@ bool widgetset_process_key(struct nc_widgetset *set, int key)
field = current_field(set->form);
widget = field_userptr(field);
widget_focus_change(widget, field, true);
+ if (widget->field_focus)
+ widget->field_focus(widget, field);
if (set->widget_focus)
set->widget_focus(widget, set->widget_focus_arg);
return true;
@@ -755,3 +773,8 @@ int widget_y(struct nc_widget *widget)
return widget->y;
}
+int widget_focus_y(struct nc_widget *widget)
+{
+ return widget->focus_y;
+}
+
diff --git a/ui/ncurses/nc-widgets.h b/ui/ncurses/nc-widgets.h
index 53f1583..d598d5a 100644
--- a/ui/ncurses/nc-widgets.h
+++ b/ui/ncurses/nc-widgets.h
@@ -59,6 +59,7 @@ int widget_height(struct nc_widget *widget);
int widget_width(struct nc_widget *widget);
int widget_y(struct nc_widget *widget);
int widget_x(struct nc_widget *widget);
+int widget_focus_y(struct nc_widget *widget);
/* widgetset API */
typedef void (*widget_focus_cb)(struct nc_widget *widget, void *arg);
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