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/* Read kdb input from the user.
* Copyright (C) 2000, 2001 Shawn Betts
*
* This file is part of ratpoison.
*
* ratpoison 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.
*
* ratpoison 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 this software; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307 USA
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <X11/Xlib.h>
#include <X11/keysym.h>
#include <X11/Xutil.h>
#include "ratpoison.h"
/* Return the name of the keysym. caller must free returned pointer */
char *
keysym_to_string (KeySym keysym, unsigned int modifier)
{
const unsigned int mod_table[] = {ControlMask,
Mod1Mask,
Mod2Mask,
Mod3Mask,
Mod4Mask,
Mod5Mask};
const unsigned char str_table[] = "CM2345";
unsigned char *name;
int pos, i;
name = malloc (15);
if (name == NULL)
{
PRINT_ERROR ("Out of memory!\n");
exit (EXIT_FAILURE);
}
for (pos = 0, i = 0; i < 6; i++)
{
if (modifier & mod_table[i])
{
name[pos] = str_table[i];
name[pos+1] = '-';
pos += 2;
}
}
name[pos] = keysym;
name[pos+1] = '\0';
return name;
}
/* Cooks a keycode + modifier into a keysym + modifier. This should be
used anytime meaningful key information is to be extracted from a
KeyPress or KeyRelease event. */
void
cook_keycode (KeyCode keycode, KeySym *keysym, unsigned int *mod)
{
KeySym normal, shifted;
normal = XKeycodeToKeysym(dpy, keycode, 0);
shifted = XKeycodeToKeysym(dpy, keycode, 1);
/* FIXME: eew, this looks gross. */
if (*mod & (ShiftMask | LockMask))
{
/* if the shifted code is not defined, then we use the normal
keysym and keep the shift mask */
if (shifted == NoSymbol)
{
*keysym = normal;
}
/* But if the shifted code is defined, we use it and remove the
shift mask */
else if (*mod & ShiftMask)
{
*keysym = shifted;
*mod &= ~(ShiftMask | LockMask);
}
/* If caps lock is on, use shifted for alpha keys */
else if (normal >= XK_a
&& normal <= XK_z
&& *mod & LockMask)
{
*keysym = shifted;
}
else
{
*keysym = normal;
}
}
else
{
*keysym = normal;
}
PRINT_DEBUG ("cooked keysym: %ld '%c' mask: %d\n",
*keysym, (char)*keysym, *mod);
}
void
read_key (KeySym *keysym, unsigned int *modifiers)
{
XEvent ev;
do
{
XMaskEvent (dpy, KeyPressMask, &ev);
*modifiers = ev.xkey.state;
cook_keycode (ev.xkey.keycode, keysym, modifiers);
} while (IsModifierKey (*keysym));
}
char *
get_input (screen_info *s, char *prompt)
{
int cur_len; /* Current length of the string. */
int allocated_len=100; /* The ammount of memory we allocated for str */
KeySym ch;
unsigned int modifier;
int revert;
Window fwin;
int prompt_width = XTextWidth (s->font, prompt, strlen (prompt));
int width = 200 + prompt_width;
char *str;
/* We don't want to draw overtop of the program bar. */
hide_bar (s);
XMapWindow (dpy, s->input_window);
XMoveResizeWindow (dpy, s->input_window,
bar_x (s, width), bar_y (s), width,
(FONT_HEIGHT (s->font) + BAR_Y_PADDING * 2));
XClearWindow (dpy, s->input_window);
XRaiseWindow (dpy, s->input_window);
/* draw the window prompt. */
XDrawString (dpy, s->input_window, s->normal_gc, BAR_X_PADDING,
BAR_Y_PADDING + s->font->max_bounds.ascent, prompt,
strlen (prompt));
XGetInputFocus (dpy, &fwin, &revert);
XSetInputFocus (dpy, s->input_window, RevertToPointerRoot, CurrentTime);
/* XSync (dpy, False); */
cur_len = 0;
/* Allocate some memory */
str = (char *) malloc ( 100 ); /* Most of the time people
won't type more than 100 chars, will they ?*/
if ( str == NULL )
{
PRINT_ERROR ("Out of memory\n");
exit (EXIT_FAILURE);
}
read_key (&ch, &modifier);
while (ch != XK_Return)
{
PRINT_DEBUG ("key %ld\n", ch);
if (ch == XK_BackSpace)
{
if (cur_len > 0) cur_len--;
XClearWindow (dpy, s->input_window);
XDrawString (dpy, s->input_window, s->normal_gc, BAR_X_PADDING,
BAR_Y_PADDING + s->font->max_bounds.ascent, prompt,
strlen (prompt));
XDrawString (dpy, s->input_window, s->normal_gc,
BAR_X_PADDING + prompt_width,
BAR_Y_PADDING + s->font->max_bounds.ascent, str,
cur_len);
}
else
{
if (cur_len > allocated_len - 1)
{
str = realloc ( str, allocated_len + 100 );
/** FIXME: realloc(3) is unlcear to me, how should I check for
its success ? - algernon **/
allocated_len += 100;
}
str[cur_len] = ch;
cur_len++;
XDrawString (dpy, s->input_window, s->normal_gc,
BAR_X_PADDING + prompt_width,
BAR_Y_PADDING + s->font->max_bounds.ascent, str, cur_len);
}
read_key (&ch, &modifier);
}
str[cur_len] = 0;
XSetInputFocus (dpy, fwin, RevertToPointerRoot, CurrentTime);
XUnmapWindow (dpy, s->input_window);
return str;
}
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