static void
glw_slideshow_render(glw_t *w, const glw_rctx_t *rc)
{
glw_t *c, *p, *n;
glw_rctx_t rc0;
if((c = w->glw_focused) == NULL)
return;
p = glw_prev_widget(c);
if(p == NULL)
p = glw_last_widget(w);
if(p != NULL && p != c) {
if(p->glw_parent_alpha > 0.01) {
rc0 = *rc;
rc0.rc_alpha *= p->glw_parent_alpha;
glw_render0(p, &rc0);
}
}
rc0 = *rc;
rc0.rc_alpha *= c->glw_parent_alpha;
glw_render0(c, &rc0);
n = glw_next_widget(c);
if(n == NULL)
n = glw_first_widget(w);
if(n != NULL && n != c) {
if(n->glw_parent_alpha > 0.01) {
rc0 = *rc;
rc0.rc_alpha *= n->glw_parent_alpha;
glw_render0(n, &rc0);
}
}
}
static int
glw_slideshow_event(glw_t *w, event_t *e)
{
glw_root_t *gr = w->glw_root;
glw_slideshow_t *s = (glw_slideshow_t *)w;
glw_t *c;
event_int_t *eu = (event_int_t *)e;
if(event_is_action(e, ACTION_SKIP_FORWARD) ||
event_is_action(e, ACTION_RIGHT)) {
c = w->glw_focused ? glw_next_widget(w->glw_focused) : NULL;
if(c == NULL)
c = glw_first_widget(w);
w->glw_focused = c;
s->deadline = 0;
glw_need_refresh(gr, 0);
} else if(event_is_action(e, ACTION_SKIP_BACKWARD) ||
event_is_action(e, ACTION_LEFT)) {
c = w->glw_focused ? glw_prev_widget(w->glw_focused) : NULL;
if(c == NULL)
c = glw_last_widget(w, 0);
w->glw_focused = c;
s->deadline = 0;
glw_need_refresh(gr, 0);
} else if(event_is_type(e, EVENT_UNICODE) && eu->val == 32) {
s->hold = !s->hold;
glw_slideshow_update_playstatus(s);
} else if(event_is_action(e, ACTION_PLAYPAUSE) ||
event_is_action(e, ACTION_PLAY) ||
event_is_action(e, ACTION_PAUSE)) {
s->hold = action_update_hold_by_event(s->hold, e);
glw_slideshow_update_playstatus(s);
} else if(event_is_action(e, ACTION_STOP)) {
prop_set_string(s->playstatus, "stop");
} else
return 0;
return 1;
}
static int
glw_nav_last(glw_t *parent)
{
glw_t *c = glw_last_widget(parent);
while(c != NULL) {
glw_t *to_focus = glw_get_focusable_child(c);
if(to_focus != NULL && to_focus->glw_flags2 & GLW2_NAV_FOCUSABLE) {
glw_focus_set(to_focus->glw_root, to_focus, GLW_FOCUS_SET_INTERACTIVE,
"NavLast");
return 1;
}
c = glw_prev_widget(c);
}
return 0;
}
static void
glw_slideshow_render(glw_t *w, const glw_rctx_t *rc)
{
glw_t *c, *p, *n;
glw_rctx_t rc0;
float sa = w->glw_alpha;
if((c = w->glw_focused) == NULL)
return;
p = glw_prev_widget(c);
if(p == NULL)
p = glw_last_widget(w);
if(p != NULL && p != c) {
float a = sa * glw_parent_data(p, glw_slideshow_item_t)->alpha;
if(a > GLW_ALPHA_EPSILON) {
rc0 = *rc;
rc0.rc_alpha *= a;
glw_render0(p, &rc0);
}
}
rc0 = *rc;
rc0.rc_alpha *= sa * glw_parent_data(c, glw_slideshow_item_t)->alpha;
glw_render0(c, &rc0);
n = glw_next_widget(c);
if(n == NULL)
n = glw_first_widget(w);
if(n != NULL && n != c) {
float a = sa * glw_parent_data(n, glw_slideshow_item_t)->alpha;
if(a > GLW_ALPHA_EPSILON) {
rc0 = *rc;
rc0.rc_alpha *= a;
glw_render0(n, &rc0);
}
}
}
static void
glw_slideshow_layout(glw_t *w, const glw_rctx_t *rc)
{
glw_slideshow_t *s = (glw_slideshow_t *)w;
glw_t *c, *p, *n;
float delta;
glw_reset_screensaver(w->glw_root);
delta = s->w.glw_root->gr_frameduration / (1000000.0 * s->transition_time);
if(s->time == 0) {
s->displaytime = INT32_MAX;
} else {
s->displaytime = 1000000 * s->time / s->w.glw_root->gr_frameduration;
}
if((c = s->w.glw_focused) == NULL) {
c = s->w.glw_focused = glw_first_widget(&s->w);
if(c)
glw_copy_constraints(&s->w, c);
}
if(c == NULL)
return;
if(s->timer >= s->displaytime) {
c = glw_next_widget(c);
if(c == NULL)
c = glw_first_widget(&s->w);
s->timer = 0;
if(c != NULL) {
glw_focus_open_path_close_all_other(c);
glw_copy_constraints(&s->w, c);
}
}
if(!s->hold)
s->timer++;
glw_layout0(c, rc);
c->glw_parent_alpha = GLW_MIN(c->glw_parent_alpha + delta, 1.0f);
/**
* Keep previous and next images 'hot' (ie, loaded into texture memory)
*/
p = glw_prev_widget(c);
if(p == NULL)
p = glw_last_widget(&s->w);
if(p != NULL && p != c) {
p->glw_parent_alpha = GLW_MAX(p->glw_parent_alpha - delta, 0.0f);
glw_layout0(p, rc);
}
n = glw_next_widget(c);
if(n == NULL)
n = glw_first_widget(&s->w);
if(n != NULL && n != c) {
n->glw_parent_alpha = GLW_MAX(n->glw_parent_alpha - delta, 0.0f);
glw_layout0(n, rc);
}
}
static void
glw_slideshow_layout(glw_t *w, const glw_rctx_t *rc)
{
glw_root_t *gr = w->glw_root;
glw_slideshow_t *s = (glw_slideshow_t *)w;
glw_t *c, *p, *n;
float delta;
int r = 0;
glw_reset_screensaver(w->glw_root);
delta = s->w.glw_root->gr_frameduration / (float)s->transition_time;
if((c = s->w.glw_focused) == NULL) {
c = s->w.glw_focused = glw_first_widget(&s->w);
if(c)
glw_copy_constraints(&s->w, c);
}
if(c == NULL)
return;
glw_schedule_refresh(gr, s->deadline);
if(s->deadline <= gr->gr_frame_start) {
s->deadline = gr->gr_frame_start + s->display_time;
c = glw_next_widget(c);
if(c == NULL)
c = glw_first_widget(&s->w);
if(c != NULL) {
glw_focus_open_path_close_all_other(c);
glw_copy_constraints(&s->w, c);
}
}
glw_layout0(c, rc);
r |= update_parent_alpha(c, GLW_MIN(c->glw_parent_alpha + delta, 1.0f));
/**
* Keep previous and next images 'hot' (ie, loaded into texture memory)
*/
p = glw_prev_widget(c);
if(p == NULL)
p = glw_last_widget(&s->w, 0);
if(p != NULL && p != c) {
r |= update_parent_alpha(p, GLW_MAX(p->glw_parent_alpha - delta, 0.0f));
glw_layout0(p, rc);
}
n = glw_next_widget(c);
if(n == NULL)
n = glw_first_widget(&s->w);
if(n != NULL && n != c) {
r |= update_parent_alpha(n, GLW_MAX(n->glw_parent_alpha - delta, 0.0f));
glw_layout0(n, rc);
}
if(r)
glw_need_refresh(w->glw_root, 0);
}