home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Fresh Fish 8
/
FreshFishVol8-CD1.bin
/
new
/
util
/
edit
/
jade
/
src
/
x11_commandline.c
< prev
next >
Wrap
C/C++ Source or Header
|
1994-06-29
|
4KB
|
181 lines
/* x11_commandline.c -- Simple prompt for X11
Copyright (C) 1993, 1994 John Harper <jsh@ukc.ac.uk>
This file is part of Jade.
Jade is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
Jade is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Jade; see the file COPYING. If not, write to
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
#include "jade.h"
#include "jade_protos.h"
#include <string.h>
#include <X11/Xutil.h>
#include <X11/keysym.h>
_PR u_char *sys_prompt(VW *, u_char *, u_char *);
/*
* returns a string got from the command line
* it (the string) must be valstrfree()'ed after use.
* cursor should be off.
*/
u_char *
sys_prompt(VW *vw, u_char *prompt, u_char *original)
{
u_char *cmdline;
int cmdlen;
int promptlen = strlen(prompt);
if(!sys_unsleep_vw(vw))
return(FALSE);
cmdline = str_dup(original ? original : (u_char *)"");
if(cmdline)
{
POS oldcursor = vw->vw_CursorPos;
long oldstartcol = vw->vw_StartCol;
long prevx;
char keepgoing = 0;
cmdlen = strlen(cmdline) + 1;
vw->vw_CursorPos.pos_Col = promptlen + cmdlen - 1;
vw->vw_CursorPos.pos_Line = vw->vw_StartCol + vw->vw_MaxY - 1;
prevx = vw->vw_CursorPos.pos_Col;
if(vw->vw_CursorPos.pos_Col >= vw->vw_MaxX)
vw->vw_StartCol = vw->vw_CursorPos.pos_Col - vw->vw_MaxX + 1;
else
vw->vw_StartCol = 0;
redraw_cmd_line(vw, prompt, cmdline, promptlen, cmdlen - 1);
cmd_line_cursor(vw, CURS_ON);
while(!keepgoing)
{
XEvent ev;
XWindowEvent(x11_display, vw->vw_Window,
KeyPressMask | ExposureMask | StructureNotifyMask,
&ev);
switch(ev.type)
{
KeySym ks;
u_char buf[256];
int len;
case MappingNotify:
XRefreshKeyboardMapping(&ev.xmapping);
continue;
case KeyPress:
cmd_line_cursor(vw, CURS_OFF);
len = XLookupString(&ev.xkey, buf, 255, &ks, NULL);
buf[len] = 0;
switch(ks)
{
case XK_Delete:
if(cmdlen > 1)
{
u_char *newline;
vw->vw_CursorPos.pos_Col--;
cmdlen--;
newline = str_dupn(cmdline, cmdlen - 1);
if(newline)
{
str_free(cmdline);
cmdline = newline;
}
}
break;
case XK_Return:
keepgoing = 1;
break;
case XK_Escape:
keepgoing = -1;
break;
case XK_Up:
case XK_Down:
if(last_prompted)
{
u_char *temp = cmdline;
cmdline = last_prompted;
last_prompted = temp;
cmdlen = strlen(cmdline) + 1;
vw->vw_CursorPos.pos_Col = cmdlen + promptlen - 1;
prevx = 20000;
}
break;
default:
if(len)
{
u_char *newline = str_dupn(cmdline, cmdlen + len);
if(newline)
{
strcat(newline, buf);
str_free(cmdline);
cmdline = newline;
cmdlen += len;
vw->vw_CursorPos.pos_Col += len;
}
}
break;
}
break;
case ConfigureNotify:
x11_update_dimensions(vw, ev.xconfigure.width,
ev.xconfigure.height);
continue;
case Expose:
vw->vw_Flags |= VWFF_FORCE_REFRESH;
draw_message_line(vw);
prevx = 20000;
cmd_line_cursor(vw, CURS_OFF);
break;
default:
continue;
}
if(vw->vw_CursorPos.pos_Col >= vw->vw_MaxX)
{
vw->vw_StartCol = vw->vw_CursorPos.pos_Col - vw->vw_MaxX + 1;
redraw_cmd_line(vw, prompt, cmdline, promptlen, cmdlen - 1);
}
else
{
vw->vw_StartCol = 0;
if(prevx >= vw->vw_MaxX)
redraw_cmd_line(vw, prompt, cmdline, promptlen,
cmdlen - 1);
else if(prevx < vw->vw_CursorPos.pos_Col)
redraw_cmd_line_from(vw, prompt, cmdline, promptlen,
cmdlen - 1, prevx);
else
redraw_cmd_line_from(vw, prompt, cmdline, promptlen,
cmdlen - 1, vw->vw_CursorPos.pos_Col);
}
prevx = vw->vw_CursorPos.pos_Col;
cmd_line_cursor(vw, CURS_ON);
}
if(keepgoing < 0)
{
str_free(cmdline);
cmdline = NULL;
}
else
{
str_free(last_prompted);
last_prompted = str_dup(cmdline);
}
cmd_line_cursor(vw, CURS_OFF);
vw->vw_CursorPos = oldcursor;
vw->vw_StartCol = oldstartcol;
return(cmdline);
}
return(FALSE);
}