/******************************************************************************\
Ring widget event function.
\******************************************************************************/
static int ring_event(i_widget_t *widget, i_event_t event)
{
float radius;
/* Calculate mouse radius for mouse events */
if (event == I_EV_MOUSE_MOVE || event == I_EV_MOUSE_DOWN)
radius = C_vec2_len(C_vec2_sub(i_mouse, screen_origin));
switch (event) {
case I_EV_CONFIGURE:
R_sprite_cleanup(&ring_sprite);
R_sprite_init(&ring_sprite, ring_texture);
ring_widget.size = ring_sprite.size;
I_widget_propagate(widget, I_EV_CONFIGURE);
position_and_pack();
return FALSE;
case I_EV_MOVED:
ring_sprite.origin = ring_widget.origin;
break;
case I_EV_MOUSE_OUT:
I_close_ring();
break;
case I_EV_MOUSE_MOVE:
if (radius > RING_OUTER_RADIUS)
I_close_ring();
else
detail_hover();
break;
case I_EV_MOUSE_DOWN:
if (i_mouse_button != SDL_BUTTON_LEFT)
I_close_ring();
if (radius <= RING_INNER_RADIUS) {
I_close_ring();
return FALSE;
}
break;
case I_EV_CLEANUP:
R_sprite_cleanup(&ring_sprite);
break;
case I_EV_RENDER:
ring_sprite.modulate.a = ring_widget.fade;
R_sprite_render(&ring_sprite);
detail_update();
break;
default:
break;
}
return TRUE;
}
/******************************************************************************\
Move a widget and all of its children. Will not generate move events if the
origin did not change.
\******************************************************************************/
void I_widget_move(i_widget_t *widget, c_vec2_t origin)
{
i_widget_t *child;
c_vec2_t diff;
diff = C_vec2_sub(origin, widget->origin);
if (!diff.x && !diff.y)
return;
widget->origin = origin;
child = widget->child;
while (child) {
I_widget_move(child, C_vec2_add(child->origin, diff));
child = child->next;
}
if (widget->event_func)
widget->event_func(widget, I_EV_MOVED);
}
/******************************************************************************\
Position a ring on its world origin.
\******************************************************************************/
static void position_and_pack(void)
{
c_vec2_t origin, size;
float angle;
int i, j;
/* Position the ring */
size = C_vec2_scalef(ring_widget.size, 0.5f);
I_widget_move(&ring_widget, C_vec2_sub(screen_origin, size));
/* Pack the visible buttons */
for (j = i = 0; i < I_RING_ICONS; i++) {
if (!button_widgets[i].widget.shown)
continue;
angle = 2.f * C_PI * ((float)j++ / buttons - 0.25f);
origin = C_vec2_scalef(C_vec2(cosf(angle), sinf(angle)),
RING_INNER_RADIUS +
RING_ICON_SIZE / 2.f);
origin = C_vec2_add(screen_origin, origin);
origin = C_vec2(origin.x - RING_ICON_SIZE / 2.f,
origin.y - RING_ICON_SIZE / 2.f);
I_widget_move(&button_widgets[i].widget, origin);
}
}
