/* ---------------------------------------------------------------------
* TerminalVScrollHook
* Terminal scroll bar mouse hook
* ---------------------------------------------------------------------
*/
static void
TerminalVScrollHook(void* w, int sbcode, int pos)
{
CUIWINDOW* win = (CUIWINDOW*) w;
CUIRECT rc;
int sbpos, range;
CUI_USE_ARG(pos);
WindowGetClientRect(win, &rc);
sbpos = WindowGetVScrollPos(win);
range = WindowGetVScrollRange(win);
switch(sbcode)
{
case SB_LINEUP:
if (sbpos > 0)
{
WindowSetVScrollPos(win, sbpos - 1);
WindowInvalidate(win);
}
break;
case SB_LINEDOWN:
if (sbpos < range)
{
WindowSetVScrollPos(win, sbpos + 1);
WindowInvalidate(win);
}
break;
case SB_PAGEUP:
if (sbpos > 0)
{
sbpos -= (rc.H - 1);
sbpos = (sbpos < 0) ? 0 : sbpos;
WindowSetVScrollPos(win, sbpos);
WindowInvalidate(win);
}
break;
case SB_PAGEDOWN:
if (sbpos < range)
{
sbpos += (rc.H - 1);
sbpos = (sbpos > range) ? range : sbpos;
WindowSetVScrollPos(win, sbpos);
WindowInvalidate(win);
}
break;
case SB_THUMBTRACK:
WindowInvalidate(win);
break;
}
}
/* ---------------------------------------------------------------------
* CbDropdownCalcPos
* Recalculate Listbox position
* ---------------------------------------------------------------------
*/
static void
CbDropdownCalcPos(CUIWINDOW* win)
{
CUIRECT rc;
COMBOBOXDATA* data = (COMBOBOXDATA*) win->InstData;
int range;
int pos;
if (!data) return;
if (win->IsCreated)
{
WindowGetClientRect(win, &rc);
range = data->NumItems - rc.H;
if (range < 0)
{
WindowSetVScrollRange(win, 0);
WindowSetVScrollPos(win, 0);
}
else
{
WindowSetVScrollRange(win, range);
pos = WindowGetVScrollPos(win);
if (data->SelIndex < 0)
{
WindowSetVScrollPos(win, 0);
}
else if (data->SelIndex - pos >= rc.H)
{
WindowSetVScrollPos(win, data->SelIndex - rc.H + 1);
}
else if (data->SelIndex - pos < 0)
{
WindowSetVScrollPos(win, data->SelIndex);
}
}
}
}
/* ---------------------------------------------------------------------
* TerminalKeyHook
* Handle EVENT_KEY events
* ---------------------------------------------------------------------
*/
static int
TerminalKeyHook(void* w, int key)
{
CUIWINDOW* win = (CUIWINDOW*) w;
TERMINALDATA* data = (TERMINALDATA*) win->InstData;
CUIRECT rc;
int yrange;
int yscroll;
if (!data) return FALSE;
WindowGetClientRect(win, &rc);
yscroll = WindowGetVScrollPos(win);
yrange = WindowGetVScrollRange(win);
if (win->IsEnabled)
{
/* if the key is processed by the custom callback hook, we
are over and done with it, else processing continues */
if (data->PreKeyHook)
{
if (data->PreKeyHook(data->PreKeyTarget, win, key))
{
return TRUE;
}
}
switch(key)
{
case KEY_DOWN:
if (yscroll < yrange)
{
WindowSetVScrollPos(win, yscroll + 1);
WindowInvalidate(win);
TerminalCursorOnOff(win);
}
return TRUE;
case KEY_UP:
if (yscroll > 0)
{
WindowSetVScrollPos(win, yscroll - 1);
WindowInvalidate(win);
TerminalCursorOnOff(win);
}
return TRUE;
case KEY_NPAGE:
if (yscroll < yrange)
{
yscroll += (rc.H - 1);
if (yscroll > yrange)
{
yscroll = yrange;
}
WindowSetVScrollPos(win, yscroll);
WindowInvalidate(win);
TerminalCursorOnOff(win);
}
return TRUE;
case KEY_PPAGE:
if (yscroll > 0)
{
yscroll -= (rc.H - 1);
if (yscroll < 0)
{
yscroll = 0;
}
WindowSetVScrollPos(win, yscroll);
WindowInvalidate(win);
TerminalCursorOnOff(win);
}
return TRUE;
case KEY_HOME:
if (yscroll > 0)
{
WindowSetVScrollPos(win, 0);
WindowInvalidate(win);
TerminalCursorOnOff(win);
}
return TRUE;
case KEY_END:
if (yscroll < yrange)
{
WindowSetVScrollPos(win, yrange);
WindowInvalidate(win);
TerminalCursorOnOff(win);
}
return TRUE;
default:
if (data->CoProc)
{
if ((key >= KEY_SPACE) && (key <= 255))
{
wchar_t c = (wchar_t) key;
TerminalCoWrite(data->CoProc, &c, 1);
return TRUE;
}
else if (key == KEY_RETURN)
{
TerminalCoWrite(data->CoProc, _T("\n"), 1);
return TRUE;
}
}
if (data->PostKeyHook)
{
if (data->PostKeyHook(data->PostKeyTarget, win, key))
{
return TRUE;
}
}
}
}
return FALSE;
}
