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switcher.c
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switcher.c
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/*
* Copyright (c) 2012 Chris Diamand
*
* This program 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 3 of the License, or
* (at your option) any later version.
*
* This program 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 program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <assert.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "selectbox.h"
#include "switcher.h"
#include "wm.h"
#define AT_BORDER 5
#define EVENT_MASK (KeyPressMask | KeyReleaseMask | KeymapStateMask | ExposureMask)
static struct selectbox_t *sb = NULL;
static XFontStruct *switcher_font = NULL;
static int currently_selected = 0;
static int switcher_key_event(struct WM_t *W, XEvent *ev)
{
KeySym sym = XLookupKeysym(&(ev->xkey), 0);
/* Alt released so focus the selected window and quit the switcher */
if (!(ev->xkey.state & Mod1Mask) ||
(ev->type == KeyRelease && sym == XK_Alt_L))
{
client_focus(W, W->clients[currently_selected]);
return -1;
}
switch (sym)
{
case XK_Tab:
if (ev->type == KeyPress)
{
if (ev->xkey.state & ShiftMask)
currently_selected--;
else
currently_selected++;
/* Wrap around */
if (currently_selected >= W->nclients)
currently_selected = 0;
if (currently_selected < 0)
currently_selected = W->nclients - 1;
selectbox_draw(sb, currently_selected);
}
break;
/* If escape pressed don't change the focus */
case XK_Escape:
return -1;
}
return 0;
}
static void switcher_events(struct WM_t *W)
{
XEvent ev;
while (1)
{
XMaskEvent(W->XDisplay, EVENT_MASK, &ev);
printf("Event: %s, window %lu\n", event_name(ev.type), ev.xany.window);
switch (ev.type)
{
case KeyPress:
case KeyRelease:
if (switcher_key_event(W, &ev) == -1)
return;
break;
case Expose:
selectbox_draw(sb, currently_selected);
break;
}
}
}
static char **make_item_list(struct WM_t *W)
{
char **ret;
int i;
if (W->nclients < 0)
return NULL;
ret = (char **) malloc(W->nclients * sizeof(char *));
for (i = 0; i < W->nclients; i++)
ret[i] = W->clients[i]->name;
return ret;
}
static void switcher_show(struct WM_t *W)
{
char **namelist = make_item_list(W);
if (W->nclients > 1)
currently_selected = 1;
else
currently_selected = 0;
sb = selectbox_new(W, curr_head_x(W) + curr_width(W) / 2,
curr_head_y(W) + curr_height(W) / 2,
200, 1, namelist, W->nclients, switcher_font);
XSetInputFocus(W->XDisplay, sb->win, RevertToPointerRoot, CurrentTime);
}
static void switcher_hide(struct WM_t *W)
{
if (W->clients[0])
client_focus(W, W->clients[0]);
free(sb->items);
selectbox_close(sb);
sb = NULL;
}
void switcher(struct WM_t *W)
{
if (W->nclients > 1)
currently_selected = 1;
else
currently_selected = 0;
switcher_show(W);
switcher_events(W);
switcher_hide(W);
}
void switcher_init(struct WM_t *W)
{
/* Load the font */
switcher_font = XLoadQueryFont(W->XDisplay, W->prefs.switcher_font);
if (!switcher_font)
{
msg("Couldn't load switcher font \'%s\', using \'fixed\' instead.\n",
W->prefs.switcher_font);
switcher_font = XLoadQueryFont(W->XDisplay, "fixed");
assert(switcher_font);
}
}