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// Desktop.C
#include "config.h"
#if DESKTOPS
#include "Frame.H"
#include "Desktop.H"
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
Desktop* Desktop::current_ = 0;
Desktop* Desktop::first = 0;
// return the highest desktop number:
int Desktop::max_number() {
int n = 0;
for (Desktop* d = first; d; d = d->next)
if (d->number_ > n) n = d->number_;
return n;
}
// return an empty slot number:
int Desktop::available_number() {
int n = 1;
for (Desktop* d = first; d;) {
if (d->number_ == n) {n++; d = first;}
else d = d->next;
}
return n;
}
// these are set by main.C:
Atom _win_workspace;
Atom _win_workspace_count;
Atom _win_workspace_names;
#ifndef __sgi
static Atom kwm_current_desktop;
#endif
extern Fl_Window* Root;
static int dont_send;
static void send_desktops() {
if (dont_send) return;
int n = Desktop::max_number();
setProperty(fl_xid(Root), _win_workspace_count, XA_CARDINAL, n);
char buffer[1025];
char* p = buffer;
for (int i = 1; i <= n; i++) {
Desktop* d = Desktop::number(i);
const char* name = d ? d->name() : "<deleted>";
while (p < buffer+1024 && *name) *p++ = *name++;
*p++ = 0;
if (p >= buffer+1024) break;
}
XChangeProperty(fl_display, fl_xid(Root), _win_workspace_names, XA_STRING,
8, PropModeReplace, (unsigned char *)buffer, p-buffer-1);
}
Desktop::Desktop(const char* n, int num) {
next = first;
first = this;
name_ = strdup(n);
number_ = num;
send_desktops();
}
Desktop::~Desktop() {
// remove from list:
for (Desktop** p = &first; *p; p = &((*p)->next))
if (*p == this) {*p = next; break;}
send_desktops();
if (current_ == this || !first->next) current(first);
// put any clients onto another desktop:
for (Frame* c = Frame::first; c; c = c->next)
if (c->desktop() == this) c->desktop(first);
free((void*)name_);
}
void Desktop::name(const char* l) {
free((void*)name_);
name_ = strdup(l);
}
void Desktop::current(Desktop* n) {
if (n == current_) return;
current_ = n;
for (Frame* c = Frame::first; c; c = c->next) {
if (c->desktop() == n) {
if (c->state() == OTHER_DESKTOP) c->state(NORMAL);
} else if (c->desktop()) {
if (c->state() == NORMAL) c->state(OTHER_DESKTOP);
}
}
if (n && !dont_send) {
#ifndef __sgi
setProperty(fl_xid(Root), kwm_current_desktop, kwm_current_desktop, n->number());
#endif
setProperty(fl_xid(Root), _win_workspace, XA_CARDINAL, n->number()-1);
}
}
// return desktop with given number, create it if necessary:
Desktop* Desktop::number(int n, int create) {
if (!n) return 0;
Desktop* d;
for (d = first; d; d = d->next) if (d->number() == n) return d;
if (create) {
char buf[20]; sprintf(buf, "Desktop %d", n);
d = new Desktop(buf,n);
}
return d;
}
// called at startup, read the list of desktops from the root
// window properties, or on failure make some default desktops.
void init_desktops() {
dont_send = 1;
int length;
char* buffer =
(char*)getProperty(fl_xid(Root), _win_workspace_names, XA_STRING, &length);
if (buffer) {
char* c = buffer;
for (int i = 1; c < buffer+length; i++) {
char* d = c; while (*d) d++;
if (*c != '<') new Desktop(c,i);
c = d+1;
}
XFree(buffer);
}
int current_num = 0;
int p = getIntProperty(fl_xid(Root), _win_workspace, XA_CARDINAL, -1);
if (p >= 0 && p < 25) current_num = p+1;
#ifndef __sgi
// SGI's Xlib barfs when you try to do this XInternAtom!
// Maybe somebody there does not like KDE?
kwm_current_desktop = XInternAtom(fl_display, "KWM_CURRENT_DESKTOP", 0);
if (!current_num) {
p = getIntProperty(fl_xid(Root), kwm_current_desktop, kwm_current_desktop);
if (p > 0 && p < 25) current_num = p;
}
#endif
if (!current_num) current_num = 1;
Desktop::current(Desktop::number(current_num, 1));
dont_send = 0;
}
#endif
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