static bool draw_transition(bool (*view_start)(int, int), bool (*view_end)(int, int), enum transition_t transition)
{
static int cur_x = ET024006_WIDTH;
static bool altern = true;
const int inc = 25;
cur_x -= inc;
if (cur_x < 0)
cur_x = 0;
switch (transition)
{
case TRANSITION_FROM_LEFT_TO_RIGHT:
if (altern)
view_start(cur_x - ET024006_WIDTH, 0);
else
view_end(cur_x, 0);
break;
case TRANSITION_FROM_RIGHT_TO_LEFT:
if (altern)
view_start(ET024006_WIDTH - cur_x, 0);
else
view_end(-cur_x, 0);
break;
}
altern = !altern;
if (cur_x)
return false;
cur_x = ET024006_WIDTH;
return true;
}
void digital_clock_cn_view_display(struct view *view) {
struct position *start = view_start(view);
struct digital_clock_cn *clock = to_digital_clock_cn(view);
do_display_digital_clock_cn(clock);
view_set_end(view, start);
}