ede/ede-desktop/Utils.cpp

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/*
* $Id$
*
* Eiconman, desktop and icon manager
* Part of Equinox Desktop Environment (EDE).
* Copyright (c) 2000-2007 EDE Authors.
*
* This program is licensed under terms of the
* GNU General Public License version 2 or newer.
* See COPYING for details.
*/
#include "Utils.h"
#include <X11/Xproto.h> // CARD32
#include <FL/x.H>
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#include <edelib/Debug.h>
#include <string.h> // strrchr, strncpy, strlen
Atom _XA_NET_WORKAREA = 0;
Atom _XA_NET_WM_WINDOW_TYPE = 0;
Atom _XA_NET_WM_WINDOW_TYPE_DESKTOP = 0;
Atom _XA_NET_NUMBER_OF_DESKTOPS = 0;
Atom _XA_NET_CURRENT_DESKTOP = 0;
Atom _XA_NET_DESKTOP_NAMES = 0;
Atom _XA_XROOTPMAP_ID = 0;
static int overlay_x = 0;
static int overlay_y = 0;
static int overlay_w = 0;
static int overlay_h = 0;
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static Fl_Window* overlay_drawable = NULL;
static char dash_list[] = {1};
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void init_atoms(void) {
_XA_NET_WORKAREA = XInternAtom(fl_display, "_NET_WORKAREA", False);
_XA_NET_WM_WINDOW_TYPE = XInternAtom(fl_display, "_NET_WM_WINDOW_TYPE", False);
_XA_NET_WM_WINDOW_TYPE_DESKTOP = XInternAtom(fl_display, "_NET_WM_WINDOW_TYPE_DESKTOP", False);
_XA_NET_NUMBER_OF_DESKTOPS = XInternAtom(fl_display, "_NET_NUMBER_OF_DESKTOPS", False);
_XA_NET_CURRENT_DESKTOP = XInternAtom(fl_display, "_NET_CURRENT_DESKTOP", False);
_XA_NET_DESKTOP_NAMES = XInternAtom(fl_display, "_NET_DESKTOP_NAMES", False);
_XA_XROOTPMAP_ID = XInternAtom(fl_display, "_XROOTPMAP_ID", False);
}
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bool net_get_workarea(int& x, int& y, int& w, int &h) {
Atom real;
int format;
unsigned long n, extra;
unsigned char* prop;
x = y = w = h = 0;
int status = XGetWindowProperty(fl_display, RootWindow(fl_display, fl_screen),
_XA_NET_WORKAREA, 0L, 0x7fffffff, False, XA_CARDINAL, &real, &format, &n, &extra, (unsigned char**)&prop);
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if(status != Success)
return false;
CARD32* val = (CARD32*)prop;
if(val) {
x = val[0];
y = val[1];
w = val[2];
h = val[3];
XFree((char*)val);
return true;
}
return false;
}
void net_make_me_desktop(Fl_Window* w) {
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/*
* xid() will return zero if window is not shown;
* make sure it is shown
*/
EASSERT(fl_xid(w));
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/*
* Reminder for me (others possible):
* note '&_XA_NET_WM_WINDOW_TYPE_DESKTOP' conversion, since gcc will not report warning/error
* if placed '_XA_NET_WM_WINDOW_TYPE_DESKTOP' only.
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*
* I lost two hours messing with this ! (gdb is unusefull in X world)
*/
XChangeProperty(fl_display, fl_xid(w), _XA_NET_WM_WINDOW_TYPE, XA_ATOM, 32, PropModeReplace,
(unsigned char*)&_XA_NET_WM_WINDOW_TYPE_DESKTOP, sizeof(Atom));
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}
int net_get_workspace_count(void) {
Atom real;
int format;
unsigned long n, extra;
unsigned char* prop;
int status = XGetWindowProperty(fl_display, RootWindow(fl_display, fl_screen),
_XA_NET_NUMBER_OF_DESKTOPS, 0L, 0x7fffffff, False, XA_CARDINAL, &real, &format, &n, &extra,
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(unsigned char**)&prop);
if(status != Success && !prop)
return -1;
int ns = int(*(long*)prop);
XFree(prop);
return ns;
}
// desktops are starting from 0
int net_get_current_desktop(void) {
Atom real;
int format;
unsigned long n, extra;
unsigned char* prop;
int status = XGetWindowProperty(fl_display, RootWindow(fl_display, fl_screen),
_XA_NET_CURRENT_DESKTOP, 0L, 0x7fffffff, False, XA_CARDINAL, &real, &format, &n, &extra,
(unsigned char**)&prop);
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if(status != Success && !prop)
return -1;
int ns = int(*(long*)prop);
XFree(prop);
return ns;
}
// call on this XFreeStringList(names)
int net_get_workspace_names(char**& names) {
// FIXME: add _NET_SUPPORTING_WM_CHECK and _NET_SUPPORTED ???
XTextProperty wnames;
XGetTextProperty(fl_display, RootWindow(fl_display, fl_screen), &wnames, _XA_NET_DESKTOP_NAMES);
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// if wm does not understainds _NET_DESKTOP_NAMES this is not set
if(!wnames.nitems || !wnames.value)
return 0;
int nsz;
/*
* FIXME: Here should as alternative Xutf8TextPropertyToTextList since
* many wm's set UTF8_STRING property. Below is XA_STRING and for UTF8_STRING
* will fail.
*/
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if(!XTextPropertyToStringList(&wnames, &names, &nsz)) {
XFree(wnames.value);
return 0;
}
XFree(wnames.value);
return nsz;
}
#if 0
int net_get_workspace_names(char** names) {
Atom nd = XInternAtom(fl_display, "_NET_DESKTOP_NAMES", False);
Atom utf8_str = XInternAtom(fl_display, "UTF8_STRING", False);
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Atom real;
int format;
unsigned long n, extra;
unsigned char* prop;
int status = XGetWindowProperty(fl_display, RootWindow(fl_display, fl_screen),
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nd, 0L, 0x7fffffff, False, utf8_str, &real, &format, &n, &extra, (unsigned char**)&prop);
if(status != Success && !prop)
return 0;
int alloc = 0;
if(real == utf8_str && format == 8) {
const char* p = (const char*)prop;
for(int i = 0, s = 0; i < n && alloc < MAX_DESKTOPS; i++, alloc++) {
if(p[i] == '\0') {
E_DEBUG("%c ", p[i]);
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names[alloc] = strndup((p + s), i - s + 1);
s = i + 1;
}
}
}
return alloc;
}
#endif
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void draw_overlay_rect(void) {
if(overlay_w <= 0 || overlay_h <= 0)
return;
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XSetDashes(fl_display, fl_gc, 0, dash_list, 1);
XSetLineAttributes(fl_display, fl_gc, 2, LineOnOffDash, CapButt, JoinMiter);
XSetFunction(fl_display, fl_gc, GXxor);
XSetForeground(fl_display, fl_gc, 0xffffffff);
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Window ow;
if(overlay_drawable)
ow = fl_xid(overlay_drawable);
else
ow = fl_window;
XDrawRectangle(fl_display, ow, fl_gc, overlay_x, overlay_y, overlay_w-1, overlay_h-1);
XSetFunction(fl_display, fl_gc, GXcopy);
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// set line to 0 again
XSetLineAttributes(fl_display, fl_gc, 0, LineOnOffDash, CapButt, JoinMiter);
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}
void draw_xoverlay(int x, int y, int w, int h) {
if(w < 0) {
x += w;
w = -w;
} else if(!w)
w = 1;
if(h < 0) {
y += h;
h = -h;
} else if(!h)
h = 1;
if(overlay_w > 0) {
if(x == overlay_x && y == overlay_y && w == overlay_w && h == overlay_h)
return;
draw_overlay_rect();
}
overlay_x = x;
overlay_y = y;
overlay_w = w;
overlay_h = h;
draw_overlay_rect();
}
void clear_xoverlay(void) {
if(overlay_w > 0) {
draw_overlay_rect();
overlay_w = 0;
}
}
void set_xoverlay_drawable(Fl_Window* win) {
overlay_drawable = win;
}
Pixmap create_mask(Fl_Image* img) {
if(!img)
return 0;
// no alpha
if(img->d() != 4)
return 0;
int iw = img->w();
int ih = img->h();
unsigned char* xim_data = new unsigned char[((iw >> 3) + 8) * ih];
XImage* xim = XCreateImage(fl_display, fl_visual->visual, 1, ZPixmap, 0, (char*)xim_data, iw, ih, 8, 0);
if(!xim) {
delete [] xim_data;
return 0;
}
const char* src = img->data()[0];
unsigned char a;
for(int y = 0; y < ih; y++) {
for(int x = 0; x < iw; x++) {
// jump rgb and pick alpha
src += 3;
a = *src++;
if(a < 128) {
// these are transparent
XPutPixel(xim, x, y, 0);
}
else {
// these are opaque
XPutPixel(xim, x, y, 1);
}
}
}
Window drawable = XCreateSimpleWindow(fl_display, RootWindow(fl_display, fl_screen), 0, 0, iw,
ih, 0, 0, BlackPixel(fl_display, fl_screen));
Pixmap pix = XCreatePixmap(fl_display, drawable, iw, ih, 1);
XGCValues gcv;
gcv.graphics_exposures = False;
GC dgc = XCreateGC(fl_display, pix, GCGraphicsExposures, &gcv);
XPutImage(fl_display, pix, dgc, xim, 0, 0, 0, 0, iw, ih);
XDestroyWindow(fl_display, drawable);
XFreeGC(fl_display, dgc);
delete [] xim->data;
xim->data = 0;
XDestroyImage(xim);
return pix;
}
char* get_basename(const char* path) {
char* p = strrchr(path, '/');
if(p)
return (p + 1);
return (char*)path;
}