Desktop
/* $Id: main.c,v 1.4 2009/09/27 13:02:39 khorben Exp $ */
/* Copyright (c) 2009 Pierre Pronchery <khorben@defora.org> */
/* This file is part of DeforaOS Desktop Framer */
/* 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, version 3 of the License.
*
* 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 <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <gtk/gtk.h>
#include <gdk/gdkx.h>
#include "../config.h"
#define max(a, b) ((a) > (b) ? (a) : (b))
#define min(a, b) ((a) < (b) ? (a) : (b))
/* Framer */
/* types */
typedef struct _Framer
{
GdkDisplay * display;
GdkScreen * screen;
GdkWindow * root;
int width;
int height;
} Framer;
/* prototypes */
static int _framer(void);
static int _framer_error(char const * message, int ret);
/* callbacks */
static GdkFilterReturn _framer_filter(GdkXEvent * xevent, GdkEvent * event,
gpointer data);
/* functions */
/* framer */
static int _framer(void)
{
Framer * framer;
if((framer = malloc(sizeof(*framer))) == NULL)
return _framer_error(strerror(errno), 1);
if((framer->display = gdk_display_get_default()) == NULL)
return _framer_error("There is no default display", 1);
framer->screen = gdk_display_get_default_screen(framer->display);
framer->root = gdk_screen_get_root_window(framer->screen);
framer->width = gdk_screen_get_width(framer->screen);
framer->height = gdk_screen_get_height(framer->screen);
XSelectInput(gdk_x11_display_get_xdisplay(framer->display),
GDK_WINDOW_XWINDOW(framer->root), NoEventMask
| SubstructureRedirectMask);
gdk_window_add_filter(framer->root, _framer_filter, framer);
return 0;
}
/* framer error */
static int _framer_error(char const * message, int ret)
{
fprintf(stderr, "%s: %s\n", PACKAGE, message);
return ret;
}
/* callbacks */
/* framer_filter */
static GdkFilterReturn _filter_client_message(XClientMessageEvent * xclient,
Framer * framer);
static GdkFilterReturn _filter_configure_notify(XConfigureEvent * xconfigure);
static GdkFilterReturn _filter_configure_request(
XConfigureRequestEvent * xconfigure, Framer * framer);
static GdkFilterReturn _filter_create_notify(XCreateWindowEvent * xcreate);
static GdkFilterReturn _filter_destroy_notify(XDestroyWindowEvent * xdestroy);
static GdkFilterReturn _filter_leave_notify(XCrossingEvent * xleave);
static GdkFilterReturn _filter_map_notify(XMapEvent * xmap, Framer * framer);
static GdkFilterReturn _filter_map_request(XMapRequestEvent * xmap,
Framer * framer);
static GdkFilterReturn _filter_motion_notify(XMotionEvent * xmotion);
static GdkFilterReturn _filter_property_notify(XPropertyEvent * xproperty,
Framer * framer);
static GdkFilterReturn _filter_unmap_notify(XUnmapEvent * xmap);
static GdkFilterReturn _framer_filter(GdkXEvent * xevent, GdkEvent * event,
gpointer data)
{
Framer * framer = data;
XEvent * xev = xevent;
switch(xev->type)
{
case ClientMessage:
return _filter_client_message(&xev->xclient, framer);
case ConfigureNotify:
return _filter_configure_notify(&xev->xconfigure);
case ConfigureRequest:
return _filter_configure_request(
&xev->xconfigurerequest, framer);
case CreateNotify:
return _filter_create_notify(&xev->xcreatewindow);
case DestroyNotify:
return _filter_destroy_notify(&xev->xdestroywindow);
case LeaveNotify:
return _filter_leave_notify(&xev->xcrossing);
case MapNotify:
return _filter_map_notify(&xev->xmap, framer);
case MapRequest:
return _filter_map_request(&xev->xmaprequest, framer);
case MotionNotify:
return _filter_motion_notify(&xev->xmotion);
case PropertyNotify:
return _filter_property_notify(&xev->xproperty,
framer);
case UnmapNotify:
return _filter_unmap_notify(&xev->xunmap);
default:
fprintf(stderr, "DEBUG: %s() type=%d\n", __func__,
xev->type);
break;
}
return GDK_FILTER_CONTINUE;
}
static GdkFilterReturn _filter_client_message(XClientMessageEvent * xclient,
Framer * framer)
{
GdkAtom atom;
char * name;
atom = gdk_x11_xatom_to_atom_for_display(framer->display,
xclient->message_type);
name = gdk_atom_name(atom);
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s() %s\n", __func__, name);
#endif
g_free(name);
return GDK_FILTER_CONTINUE;
}
static GdkFilterReturn _filter_configure_notify(XConfigureEvent * xconfigure)
{
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s()\n", __func__);
#endif
return GDK_FILTER_CONTINUE;
}
static GdkFilterReturn _filter_configure_request(
XConfigureRequestEvent * xconfigure, Framer * framer)
{
XWindowChanges wc;
unsigned long mask = xconfigure->value_mask;
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s() (%d,%d) %dx%d %lu\n", __func__,
xconfigure->x, xconfigure->y, xconfigure->width,
xconfigure->height, xconfigure->value_mask);
#endif
memset(&wc, 0, sizeof(wc));
#ifndef EMBEDDED
if(xconfigure->value_mask & CWX)
wc.x = max(xconfigure->x, 0);
if(xconfigure->value_mask & CWY)
wc.y = max(xconfigure->y, 0);
if(xconfigure->value_mask & CWWidth)
wc.width = min(xconfigure->width, framer->width);
if(xconfigure->value_mask & CWHeight)
wc.height = min(xconfigure->height, framer->height - 64);
#else
if(xconfigure->value_mask & (CWX | CWWidth))
{
wc.x = 0;
wc.width = framer->width;
mask |= CWX | CWWidth;
}
if(xconfigure->value_mask & (CWY | CWHeight))
{
wc.y = 0;
wc.height = framer->height - 64;
mask |= CWY | CWHeight;
}
if(xconfigure->value_mask & CWBorderWidth)
wc.border_width = 0;
#endif
XConfigureWindow(xconfigure->display, xconfigure->window, mask, &wc);
return GDK_FILTER_REMOVE;
}
static GdkFilterReturn _filter_create_notify(XCreateWindowEvent * xcreate)
{
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s()\n", __func__);
#endif
return GDK_FILTER_CONTINUE;
}
static GdkFilterReturn _filter_destroy_notify(XDestroyWindowEvent * xdestroy)
{
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s()\n", __func__);
#endif
return GDK_FILTER_CONTINUE;
}
static GdkFilterReturn _filter_leave_notify(XCrossingEvent * xleave)
{
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s()\n", __func__);
#endif
return GDK_FILTER_CONTINUE;
}
static GdkFilterReturn _filter_map_notify(XMapEvent * xmap, Framer * framer)
{
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s()\n", __func__);
#endif
return GDK_FILTER_CONTINUE;
}
static GdkFilterReturn _filter_map_request(XMapRequestEvent * xmap,
Framer * framer)
{
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s()\n", __func__);
#endif
XMapWindow(xmap->display, xmap->window);
return GDK_FILTER_CONTINUE;
}
static GdkFilterReturn _filter_motion_notify(XMotionEvent * xmotion)
{
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s()\n", __func__);
#endif
return GDK_FILTER_CONTINUE;
}
static GdkFilterReturn _filter_property_notify(XPropertyEvent * xproperty,
Framer * framer)
{
GdkAtom atom;
char * name;
atom = gdk_x11_xatom_to_atom_for_display(framer->display,
xproperty->atom);
name = gdk_atom_name(atom);
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s() %s\n", __func__, name);
#endif
g_free(name);
return GDK_FILTER_CONTINUE;
}
static GdkFilterReturn _filter_unmap_notify(XUnmapEvent * xmap)
{
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s()\n", __func__);
#endif
return GDK_FILTER_CONTINUE;
}
/* usage */
static int _usage(void)
{
fputs("Usage: framer\n", stderr);
return 1;
}
/* main */
int main(int argc, char * argv[])
{
int o;
gtk_init(&argc, &argv);
while((o = getopt(argc, argv, "")) != -1)
switch(o)
{
default:
return _usage();
}
if(_framer() != 0)
return 2;
gtk_main();
return 0;
}