forked from KolibriOS/kolibrios
181 lines
3.1 KiB
C
181 lines
3.1 KiB
C
//list_box
|
|
#ifndef INCLUDE_LIST_BOX_H
|
|
#define INCLUDE_LIST_BOX_H
|
|
|
|
#ifndef INCLUDE_KOLIBRI_H
|
|
#include "../lib/kolibri.h"
|
|
#endif
|
|
|
|
struct llist
|
|
{
|
|
int x, y, w, h, min_h, line_h, text_y;
|
|
int column_max;
|
|
int count, visible, first, current; //visible = row_max
|
|
int active;
|
|
void ClearList();
|
|
int ProcessKey(dword key);
|
|
int MouseOver(int xx, yy);
|
|
int ProcessMouse(int xx, yy);
|
|
int KeyDown();
|
|
int KeyUp();
|
|
int KeyHome();
|
|
int KeyEnd();
|
|
void SetSizes(int xx, yy, ww, hh, min_hh, line_hh);
|
|
int MouseScroll(dword scroll_state);
|
|
int MouseScrollNoSelection(dword scroll_state);
|
|
void debug_values();
|
|
};
|
|
|
|
|
|
void llist::debug_values()
|
|
{
|
|
debug("current: ");
|
|
debugi(current);
|
|
debug("first: ");
|
|
debugi(first);
|
|
debug("visible: ");
|
|
debugi(visible);
|
|
debug("count: ");
|
|
debugi(count);
|
|
}
|
|
|
|
|
|
|
|
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;
|
|
text_y = line_hh / 2 - 4;
|
|
visible = h / line_h;
|
|
column_max = w / 6;
|
|
//if (visible > count) visible=count;
|
|
}
|
|
|
|
|
|
int llist::MouseScroll(dword scroll_state)
|
|
{
|
|
if (count<=visible) return 0;
|
|
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 == count) return 0;
|
|
if (visible+first+3 > count) first = count - visible; else first+=2;
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int llist::MouseScrollNoSelection(dword scroll_state)
|
|
{
|
|
if (count<=visible) return 0;
|
|
if (scroll_state == 65535)
|
|
{
|
|
if (current == 0) return 0;
|
|
if (current > 3) current -= 2; else current=0;
|
|
return 1;
|
|
}
|
|
if (scroll_state == 1)
|
|
{
|
|
if (visible + current == count) return 0;
|
|
if (visible+current+3 > count) current = count - visible; else current+=2;
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int llist::MouseOver(int xx, yy)
|
|
{
|
|
if (xx>x) && (xx<x+w) && (yy>y) && (yy<y+h) return 1;
|
|
return 0;
|
|
}
|
|
|
|
int llist::ProcessMouse(int xx, yy)
|
|
{
|
|
int current_temp;
|
|
if (MouseOver(xx, yy))
|
|
{
|
|
current_temp = yy - y / line_h + first;
|
|
if (current_temp != current) && (current_temp<count)
|
|
{
|
|
current = current_temp;
|
|
return 1;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int llist::ProcessKey(dword key)
|
|
{
|
|
switch(key)
|
|
{
|
|
case ASCII_KEY_DOWN: return KeyDown();
|
|
case ASCII_KEY_UP: return KeyUp();
|
|
case ASCII_KEY_HOME: return KeyHome();
|
|
case ASCII_KEY_END: return KeyEnd();
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int llist::KeyDown()
|
|
{
|
|
if (current-first+1<visible)
|
|
{
|
|
if (current+1>=count) return 0;
|
|
current++;
|
|
}
|
|
else
|
|
{
|
|
if (visible+first>=count) return 0;
|
|
first++;
|
|
current++;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
int llist::KeyUp()
|
|
{
|
|
if (current>first)
|
|
{
|
|
current--;
|
|
}
|
|
else
|
|
{
|
|
if (first==0) return 0;
|
|
first--;
|
|
current--;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
int llist::KeyHome()
|
|
{
|
|
if (current==0) && (first==0) return 0;
|
|
current=0;
|
|
first=0;
|
|
return 1;
|
|
}
|
|
|
|
int llist::KeyEnd()
|
|
{
|
|
if (current==count-1) && (first==count-visible) return 0;
|
|
current=count-1;
|
|
first=count-visible;
|
|
return 1;
|
|
}
|
|
|
|
#endif |