forked from KolibriOS/kolibrios
79 lines
1.2 KiB
C
79 lines
1.2 KiB
C
//list_box
|
|
|
|
struct llist
|
|
{
|
|
int x, y, w, h, min_h, line_h;
|
|
int count, visible, first, current;
|
|
int current_temp;
|
|
void ClearList();
|
|
int KeyDown();
|
|
int KeyUp();
|
|
void SetSizes(int xx, yy, ww, hh, min_hh, line_hh);
|
|
int MouseScroll(dword scroll_state);
|
|
};
|
|
|
|
|
|
void llist::ClearList()
|
|
{
|
|
count = visible = first = current = 0;
|
|
}
|
|
|
|
|
|
void llist::SetSizes(int xx, yy, ww, hh, min_hh, line_hh)
|
|
{
|
|
x = xx;
|
|
y = yy;
|
|
w = ww;
|
|
h = hh;
|
|
min_h = min_hh;
|
|
line_h = line_hh;
|
|
visible = h / line_h;
|
|
}
|
|
|
|
|
|
int llist::MouseScroll(dword scroll_state)
|
|
{
|
|
if (scroll_state == 65535)
|
|
{
|
|
if (first == 0) return 0;
|
|
if (first > 3) first -= 2; else first=0;
|
|
return 1;
|
|
}
|
|
if (scroll_state == 1)
|
|
{
|
|
if (visible+first+3 >= count) first = count - visible; else first+=2;
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int llist::KeyDown()
|
|
{
|
|
if (current-first+1<visible)
|
|
{
|
|
if (current+1>=count) return -1;
|
|
current++;
|
|
}
|
|
else
|
|
{
|
|
if (visible+first>=count) return -1;
|
|
first++;
|
|
current++;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
int llist::KeyUp()
|
|
{
|
|
if (current>first)
|
|
{
|
|
current--;
|
|
}
|
|
else
|
|
{
|
|
if (first==0) return -1;
|
|
first--;
|
|
current--;
|
|
}
|
|
return 1;
|
|
} |