///////////////////////////////////////////////////////////////////////////
//
// US_LineInput() - Gets a line of user input at (x,y), the string defaults
// to whatever is pointed at by def. Input is restricted to maxchars
// chars or maxwidth pixels wide. If the user hits escape (and escok is
// true), nothing is copied into buf, and false is returned. If the
// user hits return, the current string is copied into buf, and true is
// returned
//
///////////////////////////////////////////////////////////////////////////
boolean US_LineInput(int x,int y,char *buf,char *def,boolean escok,
int maxchars,int maxwidth)
{
boolean redraw, cursorvis, cursormoved, done, result = true;
ScanCode sc;
char c, s[MaxString], olds[MaxString];
word i, cursor, w, h, len, temp;
longword lasttime;
if (def)
strcpy(s,def);
else
*s = '\0';
*olds = '\0';
cursor = strlen(s);
cursormoved = redraw = true;
cursorvis = done = false;
lasttime = get_TimeCount();
LastASCII = key_None;
LastScan = sc_None;
while (!done)
{
if (cursorvis)
USL_XORICursor(x,y,s,cursor);
IN_CheckAck();
sc = LastScan;
LastScan = sc_None;
c = LastASCII;
LastASCII = key_None;
switch (sc)
{
case sc_LeftArrow:
if (cursor)
cursor--;
c = key_None;
cursormoved = true;
break;
case sc_RightArrow:
if (s[cursor])
cursor++;
c = key_None;
cursormoved = true;
break;
case sc_Home:
cursor = 0;
c = key_None;
cursormoved = true;
break;
case sc_End:
cursor = strlen(s);
c = key_None;
cursormoved = true;
break;
case sc_Return:
strcpy(buf,s);
done = true;
result = true;
c = key_None;
break;
case sc_Escape:
if (escok)
{
done = true;
result = false;
}
c = key_None;
break;
case sc_BackSpace:
if (cursor)
{
strcpy(s + cursor - 1,s + cursor);
cursor--;
redraw = true;
}
c = key_None;
cursormoved = true;
break;
case sc_Delete:
if (s[cursor])
{
strcpy(s + cursor,s + cursor + 1);
redraw = true;
}
c = key_None;
cursormoved = true;
break;
case 0x4c: // Keypad 5
case sc_UpArrow:
case sc_DownArrow:
case sc_PgUp:
case sc_PgDn:
case sc_Insert:
c = key_None;
break;
}
if (c)
{
len = strlen(s);
USL_MeasureString(s,&w,&h);
if
(
isprint(c)
&& (len < MaxString - 1)
&& ((!maxchars) || (len < maxchars))
&& ((!maxwidth) || (w < maxwidth))
)
{
for (i = len + 1;i > cursor;i--)
s[i] = s[i - 1];
s[cursor++] = c;
redraw = true;
}
}
if (redraw)
{
px = x;
py = y;
temp = fontcolor;
fontcolor = backcolor;
USL_DrawString(olds);
fontcolor = temp;
strcpy(olds,s);
px = x;
py = y;
USL_DrawString(s);
redraw = false;
}
if (cursormoved)
{
cursorvis = false;
lasttime = get_TimeCount() - TickBase;
cursormoved = false;
}
if ( (get_TimeCount() - lasttime) > (TickBase / 2) )
{
lasttime = get_TimeCount();
cursorvis ^= true;
}
if (cursorvis)
USL_XORICursor(x,y,s,cursor);
VW_UpdateScreen();
}
if (cursorvis)
USL_XORICursor(x,y,s,cursor);
if (!result)
{
px = x;
py = y;
USL_DrawString(olds);
}
VW_UpdateScreen();
IN_ClearKeysDown();
return(result);
}
///////////////////////////////////////////////////////////////////////////
//
// US_LineInput() - Gets a line of user input at (x,y), the string defaults
// to whatever is pointed at by def. Input is restricted to maxchars
// chars or maxwidth pixels wide. If the user hits escape (and escok is
// true), nothing is copied into buf, and false is returned. If the
// user hits return, the current string is copied into buf, and true is
// returned
//
///////////////////////////////////////////////////////////////////////////
boolean
US_LineInput(int x,int y,char *buf,const char *def,boolean escok,
int maxchars,int maxwidth)
{
boolean redraw,
cursorvis,cursormoved,
done,result, checkkey;
ScanCode sc;
char c;
char s[MaxString],olds[MaxString];
int cursor,len;
word i,
w,h,
temp;
longword curtime, lasttime, lastdirtime, lastbuttontime, lastdirmovetime;
ControlInfo ci;
Direction lastdir = dir_None;
if (def)
strcpy(s,def);
else
*s = '\0';
*olds = '\0';
cursor = (int) strlen(s);
cursormoved = redraw = true;
cursorvis = done = false;
lasttime = lastdirtime = lastdirmovetime = GetTimeCount();
lastbuttontime = lasttime + TickBase / 4; // 250 ms => first button press accepted after 500 ms
LastASCII = key_None;
LastScan = sc_None;
while (!done)
{
ReadAnyControl(&ci);
if (cursorvis)
USL_XORICursor(x,y,s,cursor);
sc = LastScan;
LastScan = sc_None;
c = LastASCII;
LastASCII = key_None;
checkkey = true;
curtime = GetTimeCount();
// After each direction change accept the next change after 250 ms and then everz 125 ms
if(ci.dir != lastdir || curtime - lastdirtime > TickBase / 4 && curtime - lastdirmovetime > TickBase / 8)
{
if(ci.dir != lastdir)
{
lastdir = ci.dir;
lastdirtime = curtime;
}
lastdirmovetime = curtime;
switch(ci.dir)
{
case dir_West:
if(cursor)
{
// Remove trailing whitespace if cursor is at end of string
if(s[cursor] == ' ' && s[cursor + 1] == 0)
s[cursor] = 0;
cursor--;
}
cursormoved = true;
checkkey = false;
break;
case dir_East:
if(cursor >= MaxString - 1) break;
if(!s[cursor])
{
USL_MeasureString(s,&w,&h);
if(len >= maxchars || maxwidth && w >= maxwidth) break;
s[cursor] = ' ';
s[cursor + 1] = 0;
}
cursor++;
cursormoved = true;
checkkey = false;
break;
case dir_North:
if(!s[cursor])
{
USL_MeasureString(s,&w,&h);
if(len >= maxchars || maxwidth && w >= maxwidth) break;
s[cursor + 1] = 0;
}
s[cursor] = USL_RotateChar(s[cursor], 1);
redraw = true;
checkkey = false;
break;
case dir_South:
if(!s[cursor])
{
USL_MeasureString(s,&w,&h);
if(len >= maxchars || maxwidth && w >= maxwidth) break;
s[cursor + 1] = 0;
}
s[cursor] = USL_RotateChar(s[cursor], -1);
redraw = true;
checkkey = false;
break;
}
}
if((int)(curtime - lastbuttontime) > TickBase / 4) // 250 ms
{
if(ci.button0) // acts as return
{
strcpy(buf,s);
done = true;
result = true;
checkkey = false;
}
if(ci.button1 && escok) // acts as escape
{
done = true;
result = false;
checkkey = false;
}
if(ci.button2) // acts as backspace
{
lastbuttontime = curtime;
if(cursor)
{
strcpy(s + cursor - 1,s + cursor);
cursor--;
redraw = true;
}
cursormoved = true;
checkkey = false;
}
}
if(checkkey)
{
switch (sc)
{
case sc_LeftArrow:
if (cursor)
cursor--;
c = key_None;
cursormoved = true;
break;
case sc_RightArrow:
if (s[cursor])
cursor++;
c = key_None;
cursormoved = true;
break;
case sc_Home:
cursor = 0;
c = key_None;
cursormoved = true;
break;
case sc_End:
cursor = (int) strlen(s);
c = key_None;
cursormoved = true;
break;
case sc_Return:
strcpy(buf,s);
done = true;
result = true;
c = key_None;
break;
case sc_Escape:
if (escok)
{
done = true;
result = false;
}
c = key_None;
break;
case sc_BackSpace:
if (cursor)
{
strcpy(s + cursor - 1,s + cursor);
cursor--;
redraw = true;
}
c = key_None;
cursormoved = true;
break;
case sc_Delete:
if (s[cursor])
{
strcpy(s + cursor,s + cursor + 1);
redraw = true;
}
c = key_None;
cursormoved = true;
break;
case SDLK_KP5: //0x4c: // Keypad 5 // TODO: hmmm...
case sc_UpArrow:
case sc_DownArrow:
case sc_PgUp:
case sc_PgDn:
case sc_Insert:
c = key_None;
break;
}
if (c)
{
len = (int) strlen(s);
USL_MeasureString(s,&w,&h);
if(isprint(c) && (len < MaxString - 1) && ((!maxchars) || (len < maxchars))
&& ((!maxwidth) || (w < maxwidth)))
{
for (i = len + 1;i > cursor;i--)
s[i] = s[i - 1];
s[cursor++] = c;
redraw = true;
}
}
}
if (redraw)
{
px = x;
py = y;
temp = fontcolor;
fontcolor = backcolor;
USL_DrawString(olds);
fontcolor = (byte) temp;
strcpy(olds,s);
px = x;
py = y;
USL_DrawString(s);
redraw = false;
}
if (cursormoved)
{
cursorvis = false;
lasttime = curtime - TickBase;
cursormoved = false;
}
if (curtime - lasttime > TickBase / 2) // 500 ms
{
lasttime = curtime;
cursorvis ^= true;
}
else SDL_Delay(5);
if (cursorvis)
USL_XORICursor(x,y,s,cursor);
VW_UpdateScreen();
}
if (cursorvis)
USL_XORICursor(x,y,s,cursor);
if (!result)
{
px = x;
py = y;
USL_DrawString(olds);
}
VW_UpdateScreen();
IN_ClearKeysDown();
return(result);
}