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gistfile1.c
/*
* mcwm, a small window manager for the X Window System using the X
* protocol C Binding libraries.
*
* For 'user' configurable stuff, see config.h.
*
* MC, mc at the domain hack.org
* http://hack.org/mc/
*
* Copyright (c) 2010, 2011, 2012 Michael Cardell Widerkrantz, mc at
* the domain hack.org.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <stdlib.h>
#include <stdio.h>
#include <stdbool.h>
#include <stdint.h>
#include <unistd.h>
#include <errno.h>
#include <getopt.h>
#include <string.h>
#include <signal.h>
#include <assert.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <sys/select.h>
#include <xcb/xcb.h>
#include <xcb/randr.h>
#include <xcb/xcb_keysyms.h>
#include <xcb/xcb_atom.h>
#include <xcb/xcb_icccm.h>
#include <X11/keysym.h>
#include <xcb/xproto.h>
#include <xcb/xcb_util.h>
#ifdef DEBUG
#include "events.h"
#endif
#include "list.h"
/* Check here for user configurable parts: */
#include "config.h"
#ifdef DMALLOC
#include "dmalloc.h"
#endif
#ifdef DEBUG
#define PDEBUG(Args...) \
do { fprintf(stderr, "mcwm: "); fprintf(stderr, ##Args); } while(0)
#define D(x) x
#else
#define PDEBUG(Args...)
#define D(x)
#endif
/* Internal Constants. */
/* We're currently moving a window with the mouse. */
#define MCWM_MOVE 2
/* We're currently resizing a window with the mouse. */
#define MCWM_RESIZE 3
/*
* We're currently tabbing around the window list, looking for a new
* window to focus on.
*/
#define MCWM_TABBING 4
/* Number of workspaces. */
#define WORKSPACES 10
/* Value in WM hint which means this window is fixed on all workspaces. */
#define NET_WM_FIXED 0xffffffff
/* This means we didn't get any window hint at all. */
#define MCWM_NOWS 0xfffffffe
/* Types. */
/* All our key shortcuts. */
typedef enum {
KEY_F,
KEY_H,
KEY_J,
KEY_K,
KEY_L,
KEY_M,
KEY_R,
KEY_RET,
KEY_X,
KEY_TAB,
KEY_BACKTAB,
KEY_1,
KEY_2,
KEY_3,
KEY_4,
KEY_5,
KEY_6,
KEY_7,
KEY_8,
KEY_9,
KEY_0,
KEY_Y,
KEY_U,
KEY_B,
KEY_N,
KEY_END,
KEY_PREVSCR,
KEY_NEXTSCR,
KEY_ICONIFY,
KEY_PREVWS,
KEY_NEXTWS,
KEY_MAX
} key_enum_t;
struct monitor
{
xcb_randr_output_t id;
char *name;
int16_t x; /* X and Y. */
int16_t y;
uint16_t width; /* Width in pixels. */
uint16_t height; /* Height in pixels. */
struct item *item; /* Pointer to our place in output list. */
};
struct sizepos
{
int16_t x;
int16_t y;
uint16_t width;
uint16_t height;
};
/* Everything we know about a window. */
struct client
{
xcb_drawable_t id; /* ID of this window. */
bool usercoord; /* X,Y was set by -geom. */
int16_t x; /* X coordinate. */
int16_t y; /* Y coordinate. */
uint16_t width; /* Width in pixels. */
uint16_t height; /* Height in pixels. */
struct sizepos origsize; /* Original size if we're currently maxed. */
uint16_t min_width, min_height; /* Hints from application. */
uint16_t max_width, max_height;
int32_t width_inc, height_inc;
int32_t base_width, base_height;
bool vertmaxed; /* Vertically maximized? */
bool maxed; /* Totally maximized? */
bool fixed; /* Visible on all workspaces? */
struct monitor *monitor; /* The physical output this window is on. */
struct item *winitem; /* Pointer to our place in global windows list. */
struct item *wsitem[WORKSPACES]; /* Pointer to our place in every
* workspace window list. */
};
/* Window configuration data. */
struct winconf
{
int16_t x;
int16_t y;
uint16_t width;
uint16_t height;
uint8_t stackmode;
xcb_window_t sibling;
uint16_t borderwidth;
};
/* Globals */
int sigcode; /* Signal code. Non-zero if we've been
* interruped by a signal. */
xcb_connection_t *conn; /* Connection to X server. */
xcb_screen_t *screen; /* Our current screen. */
int randrbase; /* Beginning of RANDR extension events. */
uint32_t curws = 0; /* Current workspace. */
struct client *focuswin; /* Current focus window. */
struct client *lastfocuswin; /* Last focused window. NOTE! Only
* used to communicate between
* start and end of tabbing
* mode. */
struct item *winlist = NULL; /* Global list of all client windows. */
struct item *monlist = NULL; /* List of all physical monitor outputs. */
int mode = 0; /* Internal mode, such as move or resize */
/*
* Workspace list: Every workspace has a list of all visible
* windows.
*/
struct item *wslist[WORKSPACES] =
{
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL
};
/* Shortcut key type and initializiation. */
struct keys
{
xcb_keysym_t keysym;
xcb_keycode_t keycode;
} keys[KEY_MAX] =
{
{ USERKEY_FIX, 0 },
{ USERKEY_MOVE_LEFT, 0 },
{ USERKEY_MOVE_DOWN, 0 },
{ USERKEY_MOVE_UP, 0 },
{ USERKEY_MOVE_RIGHT, 0 },
{ USERKEY_MAXVERT, 0 },
{ USERKEY_RAISE, 0 },
{ USERKEY_TERMINAL, 0 },
{ USERKEY_MAX, 0 },
{ USERKEY_CHANGE, 0 },
{ USERKEY_BACKCHANGE, 0 },
{ USERKEY_WS1, 0 },
{ USERKEY_WS2, 0 },
{ USERKEY_WS3, 0 },
{ USERKEY_WS4, 0 },
{ USERKEY_WS5, 0 },
{ USERKEY_WS6, 0 },
{ USERKEY_WS7, 0 },
{ USERKEY_WS8, 0 },
{ USERKEY_WS9, 0 },
{ USERKEY_WS10, 0 },
{ USERKEY_TOPLEFT, 0 },
{ USERKEY_TOPRIGHT, 0 },
{ USERKEY_BOTLEFT, 0 },
{ USERKEY_BOTRIGHT, 0 },
{ USERKEY_DELETE, 0 },
{ USERKEY_PREVSCREEN, 0 },
{ USERKEY_NEXTSCREEN, 0 },
{ USERKEY_ICONIFY, 0 },
{ USERKEY_PREVWS, 0 },
{ USERKEY_NEXTWS, 0 },
};
/* All keycodes generating our MODKEY mask. */
struct modkeycodes
{
xcb_keycode_t *keycodes;
unsigned len;
} modkeys =
{
NULL,
0
};
/* Global configuration. */
struct conf
{
int borderwidth; /* Do we draw borders? If so, how large? */
char *terminal; /* Path to terminal to start. */
uint32_t focuscol; /* Focused border colour. */
uint32_t unfocuscol; /* Unfocused border colour. */
uint32_t fixedcol; /* Fixed windows border colour. */
bool allowicons; /* Allow windows to be unmapped. */
} conf;
xcb_atom_t atom_desktop; /*
* EWMH _NET_WM_DESKTOP hint that says
* what workspace a window should be
* on.
*/
xcb_atom_t wm_delete_window; /* WM_DELETE_WINDOW event to close windows. */
xcb_atom_t wm_change_state;
xcb_atom_t wm_state;
xcb_atom_t wm_protocols; /* WM_PROTOCOLS. */
/* Functions declerations. */
static void finishtabbing(void);
static struct modkeycodes getmodkeys(xcb_mod_mask_t modmask);
static void cleanup(int code);
static void arrangewindows(void);
static void setwmdesktop(xcb_drawable_t win, uint32_t ws);
static int32_t getwmdesktop(xcb_drawable_t win);
static void addtoworkspace(struct client *client, uint32_t ws);
static void delfromworkspace(struct client *client, uint32_t ws);
static void changeworkspace(uint32_t ws);
static void fixwindow(struct client *client, bool setcolour);
static uint32_t getcolor(const char *colstr);
static void forgetclient(struct client *client);
static void forgetwin(xcb_window_t win);
static void fitonscreen(struct client *client);
static void newwin(xcb_window_t win);
static struct client *setupwin(xcb_window_t win);
static xcb_keycode_t keysymtokeycode(xcb_keysym_t keysym,
xcb_key_symbols_t *keysyms);
static int setupkeys(void);
static int setupscreen(void);
static int setuprandr(void);
static void getrandr(void);
static void getoutputs(xcb_randr_output_t *outputs, int len,
xcb_timestamp_t timestamp);
void arrbymon(struct monitor *monitor);
static struct monitor *findmonitor(xcb_randr_output_t id);
static struct monitor *findclones(xcb_randr_output_t id, int16_t x, int16_t y);
static struct monitor *findmonbycoord(int16_t x, int16_t y);
static void delmonitor(struct monitor *mon);
static struct monitor *addmonitor(xcb_randr_output_t id, char *name,
uint32_t x, uint32_t y, uint16_t width,
uint16_t height);
static void raisewindow(xcb_drawable_t win);
static void raiseorlower(struct client *client);
static void movelim(struct client *client);
static void movewindow(xcb_drawable_t win, uint16_t x, uint16_t y);
static struct client *findclient(xcb_drawable_t win);
static void focusnext(bool reverse);
static void setunfocus(xcb_drawable_t win);
static void setfocus(struct client *client);
static int start(char *program);
static void resizelim(struct client *client);
static void moveresize(xcb_drawable_t win, uint16_t x, uint16_t y,
uint16_t width, uint16_t height);
static void resize(xcb_drawable_t win, uint16_t width, uint16_t height);
static void resizestep(struct client *client, char direction);
static void mousemove(struct client *client, int rel_x, int rel_y);
static void mouseresize(struct client *client, int rel_x, int rel_y);
static void movestep(struct client *client, char direction);
static void setborders(struct client *client, int width);
static void unmax(struct client *client);
static void maximize(struct client *client);
static void maxvert(struct client *client);
static void hide(struct client *client);
static bool getpointer(xcb_drawable_t win, int16_t *x, int16_t *y);
static bool getgeom(xcb_drawable_t win, int16_t *x, int16_t *y, uint16_t *width,
uint16_t *height);
static void topleft(void);
static void topright(void);
static void botleft(void);
static void botright(void);
static void deletewin(void);
static void prevscreen(void);
static void nextscreen(void);
static void handle_keypress(xcb_key_press_event_t *ev);
static void configwin(xcb_window_t win, uint16_t mask, struct winconf wc);
static void configurerequest(xcb_configure_request_event_t *e);
static void events(void);
static void printhelp(void);
static void sigcatch(int sig);
static xcb_atom_t getatom(char *atom_name);
/* Function bodies. */
/*
* MODKEY was released after tabbing around the
* workspace window ring. This means this mode is
* finished and we have found a new focus window.
*
* We need to move first the window we used to focus
* on to the head of the window list and then move the
* new focus to the head of the list as well. The list
* should always start with the window we're focusing
* on.
*/
void finishtabbing(void)
{
mode = 0;
if (NULL != lastfocuswin)
{
movetohead(&wslist[curws], lastfocuswin->wsitem[curws]);
lastfocuswin = NULL;
}
movetohead(&wslist[curws], focuswin->wsitem[curws]);
}
/*
* Find out what keycode modmask is bound to. Returns a struct. If the
* len in the struct is 0 something went wrong.
*/
struct modkeycodes getmodkeys(xcb_mod_mask_t modmask)
{
xcb_get_modifier_mapping_cookie_t cookie;
xcb_get_modifier_mapping_reply_t *reply;
xcb_keycode_t *modmap;
struct modkeycodes keycodes = {
NULL,
0
};
int mask;
unsigned i;
const xcb_mod_mask_t masks[8] = { XCB_MOD_MASK_SHIFT,
XCB_MOD_MASK_LOCK,
XCB_MOD_MASK_CONTROL,
XCB_MOD_MASK_1,
XCB_MOD_MASK_2,
XCB_MOD_MASK_3,
XCB_MOD_MASK_4,
XCB_MOD_MASK_5 };
cookie = xcb_get_modifier_mapping_unchecked(conn);
if ((reply = xcb_get_modifier_mapping_reply(conn, cookie, NULL)) == NULL)
{
return keycodes;
}
if (NULL == (keycodes.keycodes = calloc(reply->keycodes_per_modifier,
sizeof (xcb_keycode_t))))
{
PDEBUG("Out of memory.\n");
return keycodes;
}
modmap = xcb_get_modifier_mapping_keycodes(reply);
/*
* The modmap now contains keycodes.
*
* The number of keycodes in the list is 8 *
* keycodes_per_modifier. The keycodes are divided into eight
* sets, with each set containing keycodes_per_modifier elements.
*
* Each set corresponds to a modifier in masks[] in the order
* specified above.
*
* The keycodes_per_modifier value is chosen arbitrarily by the
* server. Zeroes are used to fill in unused elements within each
* set.
*/
for (mask = 0; mask < 8; mask ++)
{
if (masks[mask] == modmask)
{
for (i = 0; i < reply->keycodes_per_modifier; i ++)
{
if (0 != modmap[mask * reply->keycodes_per_modifier + i])
{
keycodes.keycodes[i]
= modmap[mask * reply->keycodes_per_modifier + i];
keycodes.len ++;
}
}
PDEBUG("Got %d keycodes.\n", keycodes.len);
}
} /* for mask */
free(reply);
return keycodes;
}
/*
* Set keyboard focus to follow mouse pointer. Then exit.
*
* We don't need to bother mapping all windows we know about. They
* should all be in the X server's Save Set and should be mapped
* automagically.
*/
void cleanup(int code)
{
xcb_set_input_focus(conn, XCB_NONE,
XCB_INPUT_FOCUS_POINTER_ROOT,
XCB_CURRENT_TIME);
xcb_flush(conn);
xcb_disconnect(conn);
exit(code);
}
/*
* Rearrange windows to fit new screen size.
*/
void arrangewindows(void)
{
struct item *item;
struct client *client;
/*
* Go through all windows. If they don't fit on the new screen,
* move them around and resize them as necessary.
*/
for (item = winlist; item != NULL; item = item->next)
{
client = item->data;
fitonscreen(client);
} /* for */
}
/* Set the EWMH hint that window win belongs on workspace ws. */
void setwmdesktop(xcb_drawable_t win, uint32_t ws)
{
PDEBUG("Changing _NET_WM_DESKTOP on window %d to %d\n", win, ws);
xcb_change_property(conn, XCB_PROP_MODE_REPLACE, win,
atom_desktop, XCB_ATOM_CARDINAL, 32, 1,
&ws);
}
/*
* Get EWWM hint so we might know what workspace window win should be
* visible on.
*
* Returns either workspace, NET_WM_FIXED if this window should be
* visible on all workspaces or MCWM_NOWS if we didn't find any hints.
*/
int32_t getwmdesktop(xcb_drawable_t win)
{
xcb_get_property_reply_t *reply;
xcb_get_property_cookie_t cookie;
uint32_t *wsp;
uint32_t ws;
cookie = xcb_get_property(conn, false, win, atom_desktop,
XCB_GET_PROPERTY_TYPE_ANY, 0,
sizeof (int32_t));
reply = xcb_get_property_reply(conn, cookie, NULL);
if (NULL == reply)
{
fprintf(stderr, "mcwm: Couldn't get properties for win %d\n", win);
return MCWM_NOWS;
}
/* Length is 0 if we didn't find it. */
if (0 == xcb_get_property_value_length(reply))
{
PDEBUG("_NET_WM_DESKTOP reply was 0 length.\n");
goto bad;
}
wsp = xcb_get_property_value(reply);
ws = *wsp;
PDEBUG("got _NET_WM_DESKTOP: %d stored at %p.\n", ws, (void *)wsp);
free(reply);
return ws;
bad:
free(reply);
return MCWM_NOWS;
}
/* Add a window, specified by client, to workspace ws. */
void addtoworkspace(struct client *client, uint32_t ws)
{
struct item *item;
item = additem(&wslist[ws]);
if (NULL == item)
{
PDEBUG("addtoworkspace: Out of memory.\n");
return;
}
/* Remember our place in the workspace window list. */
client->wsitem[ws] = item;
/* Remember the data. */
item->data = client;
/*
* Set window hint property so we can survive a crash.
*
* Fixed windows have their own special WM hint. We don't want to
* mess with that.
*/
if (!client->fixed)
{
setwmdesktop(client->id, ws);
}
}
/* Delete window client from workspace ws. */
void delfromworkspace(struct client *client, uint32_t ws)
{
delitem(&wslist[ws], client->wsitem[ws]);
/* Reset our place in the workspace window list. */
client->wsitem[ws] = NULL;
}
/* Change current workspace to ws. */
void changeworkspace(uint32_t ws)
{
struct item *item;
struct client *client;
if (ws == curws)
{
PDEBUG("Changing to same workspace!\n");
return;
}
PDEBUG("Changing from workspace #%d to #%d\n", curws, ws);
/*
* We lose our focus if the window we focus isn't fixed. An
* EnterNotify event will set focus later.
*/
if (NULL != focuswin && !focuswin->fixed)
{
setunfocus(focuswin->id);
focuswin = NULL;
}
/* Go through list of current ws. Unmap everything that isn't fixed. */
for (item = wslist[curws]; item != NULL; item = item->next)
{
client = item->data;
PDEBUG("changeworkspace. unmap phase. ws #%d, client-fixed: %d\n",
curws, client->fixed);
if (!client->fixed)
{
/*
* This is an ordinary window. Just unmap it. Note that
* this will generate an unnecessary UnmapNotify event
* which we will try to handle later.
*/
xcb_unmap_window(conn, client->id);
}
} /* for */
/* Go through list of new ws. Map everything that isn't fixed. */
for (item = wslist[ws]; item != NULL; item = item->next)
{
client = item->data;
PDEBUG("changeworkspace. map phase. ws #%d, client-fixed: %d\n",
ws, client->fixed);
/* Fixed windows are already mapped. Map everything else. */
if (!client->fixed)
{
xcb_map_window(conn, client->id);
}
}
xcb_flush(conn);
curws = ws;
}
/*
* Fix or unfix a window client from all workspaces. If setcolour is
* set, also change back to ordinary focus colour when unfixing.
*/
void fixwindow(struct client *client, bool setcolour)
{
uint32_t values[1];
uint32_t ws;
if (NULL == client)
{
return;
}
if (client->fixed)
{
client->fixed = false;
setwmdesktop(client->id, curws);
if (setcolour)
{
/* Set border color to ordinary focus colour. */
values[0] = conf.focuscol;
xcb_change_window_attributes(conn, client->id, XCB_CW_BORDER_PIXEL,
values);
}
/* Delete from all workspace lists except current. */
for (ws = 0; ws < WORKSPACES; ws ++)
{
if (ws != curws)
{
delfromworkspace(client, ws);
}
}
}
else
{
/*
* First raise the window. If we're going to another desktop
* we don't want this fixed window to be occluded behind
* something else.
*/
raisewindow(client->id);
client->fixed = true;
setwmdesktop(client->id, NET_WM_FIXED);
/* Add window to all workspace lists. */
for (ws = 0; ws < WORKSPACES; ws ++)
{
if (ws != curws)
{
addtoworkspace(client, ws);
}
}
if (setcolour)
{
/* Set border color to fixed colour. */
values[0] = conf.fixedcol;
xcb_change_window_attributes(conn, client->id, XCB_CW_BORDER_PIXEL,
values);
}
}
xcb_flush(conn);
}
/*
* Get the pixel values of a named colour colstr.
*
* Returns pixel values.
* */
uint32_t getcolor(const char *colstr)
{
xcb_alloc_named_color_reply_t *col_reply;
xcb_colormap_t colormap;
xcb_generic_error_t *error;
xcb_alloc_named_color_cookie_t colcookie;
colormap = screen->default_colormap;
colcookie = xcb_alloc_named_color(conn, colormap, strlen(colstr), colstr);
col_reply = xcb_alloc_named_color_reply(conn, colcookie, &error);
if (NULL != error)
{
fprintf(stderr, "mcwm: Couldn't get pixel value for colour %s. "
"Exiting.\n", colstr);
xcb_disconnect(conn);
exit(1);
}
return col_reply->pixel;
}
/* Forget everything about client client. */
void forgetclient(struct client *client)
{
uint32_t ws;
if (NULL == client)
{
PDEBUG("forgetclient: client was NULL\n");
return;
}
/*
* Delete this client from whatever workspace lists it belongs to.
* Note that it's OK to be on several workspaces at once even if
* you're not fixed.
*/
for (ws = 0; ws < WORKSPACES; ws ++)
{
if (NULL != client->wsitem[ws])
{
delfromworkspace(client, ws);
}
}
/* Remove from global window list. */
freeitem(&winlist, NULL, client->winitem);
}
/* Forget everything about a client with client->id win. */
void forgetwin(xcb_window_t win)
{
struct item *item;
struct client *client;
uint32_t ws;
/* Find this window in the global window list. */
for (item = winlist; item != NULL; item = item->next)
{
client = item->data;
/*
* Forget about it completely and free allocated data.
*
* Note that it might already be freed by handling an
* UnmapNotify, so it isn't necessarily an error if we don't
* find it.
*/
PDEBUG("Win %d == client ID %d\n", win, client->id);
if (win == client->id)
{
/* Found it. */
PDEBUG("Found it. Forgetting...\n");
/*
* Delete window from whatever workspace lists it belonged
* to. Note that it's OK to be on several workspaces at
* once.
*/
for (ws = 0; ws < WORKSPACES; ws ++)
{
PDEBUG("Looking in ws #%d.\n", ws);
if (NULL == client->wsitem[ws])
{
PDEBUG(" but it wasn't there.\n");
}
else
{
PDEBUG(" found it here. Deleting!\n");
delfromworkspace(client, ws);
}
}
free(item->data);
delitem(&winlist, item);
return;
}
}
}
/*
* Fit client on physical screen, moving and resizing as necessary.
*/
void fitonscreen(struct client *client)
{
int16_t mon_x;
int16_t mon_y;
uint16_t mon_width;
uint16_t mon_height;
bool willmove = false;
bool willresize = false;
client->vertmaxed = false;
if (client->maxed)
{
client->maxed = false;
setborders(client, conf.borderwidth);
}
if (NULL == client->monitor)
{
/*
* This window isn't attached to any physical monitor. This
* probably means there is no RANDR, so we use the root window
* size.
*/
mon_x = 0;
mon_y = 0;
mon_width = screen->width_in_pixels;
mon_height = screen->height_in_pixels;
}
else
{
mon_x = client->monitor->x;
mon_y = client->monitor->y;
mon_width = client->monitor->width;
mon_height = client->monitor->height;
}
PDEBUG("Is window outside monitor?\n");
PDEBUG("x: %d between %d and %d?\n", client->x, mon_x, mon_x + mon_width);
PDEBUG("y: %d between %d and %d?\n", client->y, mon_y, mon_y + mon_height);
/* Is it outside the physical monitor? */
if (client->x > mon_x + mon_width)
{
client->x = mon_x + mon_width - client->width;
willmove = true;
}
if (client->y > mon_y + mon_height)
{
client->y = mon_y + mon_height - client->height;
willmove = true;
}
if (client->x < mon_x)
{
client->x = mon_x;
willmove = true;
}
if (client->y < mon_y)
{
client->y = mon_y;
willmove = true;
}
/* Is it smaller than it wants to be? */
if (0 != client->min_height && client->height < client->min_height)
{
client->height = client->min_height;
willresize = true;
}
if (0 != client->min_width && client->width < client->min_width)
{
client->width = client->min_width;
willresize = true;
}
/*
* If the window is larger than our screen, just place it in the
* corner and resize.
*/
if (client->width + conf.borderwidth * 2 > mon_width)
{
client->x = mon_x;
client->width = mon_width - conf.borderwidth * 2;;
willmove = true;
willresize = true;
}
else if (client->x + client->width + conf.borderwidth * 2
> mon_x + mon_width)
{
client->x = mon_x + mon_width - (client->width + conf.borderwidth * 2);
willmove = true;
}
if (client->height + conf.borderwidth * 2 > mon_height)
{
client->y = mon_y;
client->height = mon_height - conf.borderwidth * 2;
willmove = true;
willresize = true;
}
else if (client->y + client->height + conf.borderwidth * 2
> mon_y + mon_height)
{
client->y = mon_y + mon_height - (client->height + conf.borderwidth
* 2);
willmove = true;
}
if (willmove)
{
PDEBUG("Moving to %d,%d.\n", client->x, client->y);
movewindow(client->id, client->x, client->y);
}
if (willresize)
{
PDEBUG("Resizing to %d x %d.\n", client->width, client->height);
resize(client->id, client->width, client->height);
}
}
/*
* Set position, geometry and attributes of a new window and show it
* on the screen.
*/
void newwin(xcb_window_t win)
{
struct client *client;
if (NULL != findclient(win))
{
/*
* We know this window from before. It's trying to map itself
* on the current workspace, but since it's unmapped it
* probably belongs on another workspace. We don't like that.
* Silently ignore.
*/
return;
}
/*
* Set up stuff, like borders, add the window to the client list,
* et cetera.
*/
client = setupwin(win);
if (NULL == client)
{
fprintf(stderr, "mcwm: Couldn't set up window. Out of memory.\n");
return;
}
/* Add this window to the current workspace. */
addtoworkspace(client, curws);
/*
* If the client doesn't say the user specified the coordinates
* for the window we map it where our pointer is instead.
*/
if (!client->usercoord)
{
int16_t pointx;
int16_t pointy;
PDEBUG("Coordinates not set by user. Using pointer: %d,%d.\n",
pointx, pointy);
/* Get pointer position so we can move the window to the cursor. */
if (!getpointer(screen->root, &pointx, &pointy))
{
PDEBUG("Failed to get pointer coords!\n");
pointx = 0;
pointy = 0;
}
client->x = pointx;
client->y = pointy;
movewindow(client->id, client->x, client->y);
}
else
{
PDEBUG("User set coordinates.\n");
}
/* Find the physical output this window will be on if RANDR is active. */
if (-1 != randrbase)
{
client->monitor = findmonbycoord(client->x, client->y);
if (NULL == client->monitor)
{
/*
* Window coordinates are outside all physical monitors.
* Choose the first screen.
*/
if (NULL != monlist)
{
client->monitor = monlist->data;
}
}
}
fitonscreen(client);
/* Show window on screen. */
xcb_map_window(conn, client->id);
/* Declare window normal. */
long data[] = { XCB_ICCCM_WM_STATE_NORMAL, XCB_NONE };
xcb_change_property(conn, XCB_PROP_MODE_REPLACE, client->id,
wm_state, wm_state, 32, 2, data);
/*
* Move cursor into the middle of the window so we don't lose the
* pointer to another window.
*/
xcb_warp_pointer(conn, XCB_NONE, win, 0, 0, 0, 0,
client->width / 2, client->height / 2);
xcb_flush(conn);
}
/* Set border colour, width and event mask for window. */
struct client *setupwin(xcb_window_t win)
{
uint32_t mask = 0;
uint32_t values[2];
struct item *item;
struct client *client;
xcb_size_hints_t hints;
uint32_t ws;
/* Set border color. */
values[0] = conf.unfocuscol;
xcb_change_window_attributes(conn, win, XCB_CW_BORDER_PIXEL, values);
/* Set border width. */
values[0] = conf.borderwidth;
mask = XCB_CONFIG_WINDOW_BORDER_WIDTH;
xcb_configure_window(conn, win, mask, values);
mask = XCB_CW_EVENT_MASK;
values[0] = XCB_EVENT_MASK_ENTER_WINDOW;
xcb_change_window_attributes_checked(conn, win, mask, values);
/* Add this window to the X Save Set. */
xcb_change_save_set(conn, XCB_SET_MODE_INSERT, win);
xcb_flush(conn);
/* Remember window and store a few things about it. */
item = additem(&winlist);
if (NULL == item)
{
PDEBUG("newwin: Out of memory.\n");
return NULL;
}
client = malloc(sizeof (struct client));
if (NULL == client)
{
PDEBUG("newwin: Out of memory.\n");
return NULL;
}
item->data = client;
/* Initialize client. */
client->id = win;
client->usercoord = false;
client->x = 0;
client->y = 0;
client->width = 0;
client->height = 0;
client->min_width = 0;
client->min_height = 0;
client->max_width = screen->width_in_pixels;
client->max_height = screen->height_in_pixels;
client->base_width = 0;
client->base_height = 0;
client->width_inc = 1;
client->height_inc = 1;
client->vertmaxed = false;
client->maxed = false;
client->fixed = false;
client->monitor = NULL;
client->winitem = item;
for (ws = 0; ws < WORKSPACES; ws ++)
{
client->wsitem[ws] = NULL;
}
PDEBUG("Adding window %d\n", client->id);
/* Get window geometry. */
if (!getgeom(client->id, &client->x, &client->y, &client->width,
&client->height))
{
fprintf(stderr, "Couldn't get geometry in initial setup of window.\n");
}
/*
* Get the window's incremental size step, if any.
*/
if (!xcb_icccm_get_wm_normal_hints_reply(
conn, xcb_icccm_get_wm_normal_hints_unchecked(
conn, win), &hints, NULL))
{
PDEBUG("Couldn't get size hints.\n");
}
/*
* The user specified the position coordinates. Remember that so
* we can use geometry later.
*/
if (hints.flags & XCB_ICCCM_SIZE_HINT_US_POSITION)
{
client->usercoord = true;
}
if (hints.flags & XCB_ICCCM_SIZE_HINT_P_MIN_SIZE)
{
client->min_width = hints.min_width;
client->min_height = hints.min_height;
}
if (hints.flags & XCB_ICCCM_SIZE_HINT_P_MAX_SIZE)
{
client->max_width = hints.max_width;
client->max_height = hints.max_height;
}
if (hints.flags & XCB_ICCCM_SIZE_HINT_P_RESIZE_INC)
{
client->width_inc = hints.width_inc;
client->height_inc = hints.height_inc;
PDEBUG("widht_inc %d\nheight_inc %d\n", client->width_inc,
client->height_inc);
}
if (hints.flags & XCB_ICCCM_SIZE_HINT_BASE_SIZE)
{
client->base_width = hints.base_width;
client->base_height = hints.base_height;
}
return client;
}
/*
* Get a keycode from a keysym.
*
* Returns keycode value.
*/
xcb_keycode_t keysymtokeycode(xcb_keysym_t keysym, xcb_key_symbols_t *keysyms)
{
xcb_keycode_t *keyp;
xcb_keycode_t key;
/* We only use the first keysymbol, even if there are more. */
keyp = xcb_key_symbols_get_keycode(keysyms, keysym);
if (NULL == keyp)
{
fprintf(stderr, "mcwm: Couldn't look up key. Exiting.\n");
exit(1);
return 0;
}
key = *keyp;
free(keyp);
return key;
}
/*
* Set up all shortcut keys.
*
* Returns 0 on success, non-zero otherwise.
*/
int setupkeys(void)
{
xcb_key_symbols_t *keysyms;
unsigned i;
/* Get all the keysymbols. */
keysyms = xcb_key_symbols_alloc(conn);
/*
* Find out what keys generates our MODKEY mask. Unfortunately it
* might be several keys.
*/
if (NULL != modkeys.keycodes)
{
free(modkeys.keycodes);
}
modkeys = getmodkeys(MODKEY);
if (0 == modkeys.len)
{
fprintf(stderr, "We couldn't find any keycodes to our main modifier "
"key!\n");
return -1;
}
for (i = 0; i < modkeys.len; i ++)
{
/*
* Grab the keys that are bound to MODKEY mask with any other
* modifier.
*/
xcb_grab_key(conn, 1, screen->root, XCB_MOD_MASK_ANY,
modkeys.keycodes[i],
XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC);
}
/* Now grab the rest of the keys with the MODKEY modifier. */
for (i = KEY_F; i < KEY_MAX; i ++)
{
if (XK_VoidSymbol == keys[i].keysym)
{
keys[i].keycode = 0;
continue;
}
keys[i].keycode = keysymtokeycode(keys[i].keysym, keysyms);
if (0 == keys[i].keycode)
{
/* Couldn't set up keys! */
/* Get rid of key symbols. */
xcb_key_symbols_free(keysyms);
return -1;
}
/* Grab other keys with a modifier mask. */
xcb_grab_key(conn, 1, screen->root, MODKEY, keys[i].keycode,
XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC);
/*
* XXX Also grab it's shifted counterpart. A bit ugly here
* because we grab all of them not just the ones we want.
*/
xcb_grab_key(conn, 1, screen->root, MODKEY | SHIFTMOD,
keys[i].keycode,
XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC);
} /* for */
/* Need this to take effect NOW! */
xcb_flush(conn);
/* Get rid of the key symbols table. */
xcb_key_symbols_free(keysyms);
return 0;
}
/*
* Walk through all existing windows and set them up.
*
* Returns 0 on success.
*/
int setupscreen(void)
{
xcb_query_tree_reply_t *reply;
xcb_query_pointer_reply_t *pointer;
int i;
int len;
xcb_window_t *children;
xcb_get_window_attributes_reply_t *attr;
struct client *client;
uint32_t ws;
/* Get all children. */
reply = xcb_query_tree_reply(conn,
xcb_query_tree(conn, screen->root), 0);
if (NULL == reply)
{
return -1;
}
len = xcb_query_tree_children_length(reply);
children = xcb_query_tree_children(reply);
/* Set up all windows on this root. */
for (i = 0; i < len; i ++)
{
attr = xcb_get_window_attributes_reply(
conn, xcb_get_window_attributes(conn, children[i]), NULL);
if (!attr)
{
fprintf(stderr, "Couldn't get attributes for window %d.",
children[i]);
continue;
}
/*
* Don't set up or even bother windows in override redirect
* mode.
*
* This mode means they wouldn't have been reported to us
* with a MapRequest if we had been running, so in the
* normal case we wouldn't have seen them.
*
* Only handle visible windows.
*/
if (!attr->override_redirect
&& attr->map_state == XCB_MAP_STATE_VIEWABLE)
{
client = setupwin(children[i]);
if (NULL != client)
{
/*
* Find the physical output this window will be on if
* RANDR is active.
*/
if (-1 != randrbase)
{
PDEBUG("Looking for monitor on %d x %d.\n", client->x,
client->y);
client->monitor = findmonbycoord(client->x, client->y);
#if DEBUG
if (NULL != client->monitor)
{
PDEBUG("Found client on monitor %s.\n",
client->monitor->name);
}
else
{
PDEBUG("Couldn't find client on any monitor.\n");
}
#endif
}
/* Fit window on physical screen. */
fitonscreen(client);
/*
* Check if this window has a workspace set already as
* a WM hint.
*
*/
ws = getwmdesktop(children[i]);
if (ws == NET_WM_FIXED)
{
/* Add to current workspace. */
addtoworkspace(client, curws);
/* Add to all other workspaces. */
fixwindow(client, false);
}
else if (MCWM_NOWS != ws && ws < WORKSPACES)
{
addtoworkspace(client, ws);
/* If it's not our current workspace, hide it. */
if (ws != curws)
{
xcb_unmap_window(conn, client->id);
}
}
else
{
/*
* No workspace hint at all. Just add it to our
* current workspace.
*/
addtoworkspace(client, curws);
}
}
}
free(attr);
} /* for */
changeworkspace(0);
/*
* Get pointer position so we can set focus on any window which
* might be under it.
*/
pointer = xcb_query_pointer_reply(
conn, xcb_query_pointer(conn, screen->root), 0);
if (NULL == pointer)
{
focuswin = NULL;
}
else
{
setfocus(findclient(pointer->child));
free(pointer);
}
xcb_flush(conn);
free(reply);
return 0;
}
/*
* Set up RANDR extension. Get the extension base and subscribe to
* events.
*/
int setuprandr(void)
{
const xcb_query_extension_reply_t *extension;
int base;
extension = xcb_get_extension_data(conn, &xcb_randr_id);
if (!extension->present)
{
PDEBUG("No RANDR extension.\n");
return -1;
}
else
{
getrandr();
}
base = extension->first_event;
PDEBUG("randrbase is %d.\n", base);
xcb_randr_select_input(conn, screen->root,
XCB_RANDR_NOTIFY_MASK_SCREEN_CHANGE |
XCB_RANDR_NOTIFY_MASK_OUTPUT_CHANGE |
XCB_RANDR_NOTIFY_MASK_CRTC_CHANGE |
XCB_RANDR_NOTIFY_MASK_OUTPUT_PROPERTY);
xcb_flush(conn);
return base;
}
/*
* Get RANDR resources and figure out how many outputs there are.
*/
void getrandr(void)
{
xcb_randr_get_screen_resources_current_cookie_t rcookie;
xcb_randr_get_screen_resources_current_reply_t *res;
xcb_randr_output_t *outputs;
int len;
xcb_timestamp_t timestamp;
rcookie = xcb_randr_get_screen_resources_current(conn, screen->root);
res = xcb_randr_get_screen_resources_current_reply(conn, rcookie, NULL);
if (NULL == res)
{
printf("No RANDR extension available.\n");
return;
}
timestamp = res->config_timestamp;
len = xcb_randr_get_screen_resources_current_outputs_length(res);
outputs = xcb_randr_get_screen_resources_current_outputs(res);
PDEBUG("Found %d outputs.\n", len);
/* Request information for all outputs. */
getoutputs(outputs, len, timestamp);
free(res);
}
/*
* Walk through all the RANDR outputs (number of outputs == len) there
* was at time timestamp.
*/
void getoutputs(xcb_randr_output_t *outputs, int len, xcb_timestamp_t timestamp)
{
char *name;
xcb_randr_get_crtc_info_cookie_t icookie;
xcb_randr_get_crtc_info_reply_t *crtc = NULL;
xcb_randr_get_output_info_reply_t *output;
struct monitor *mon;
struct monitor *clonemon;
xcb_randr_get_output_info_cookie_t ocookie[len];
int i;
for (i = 0; i < len; i++)
{
ocookie[i] = xcb_randr_get_output_info(conn, outputs[i], timestamp);
}
/* Loop through all outputs. */
for (i = 0; i < len; i ++)
{
output = xcb_randr_get_output_info_reply(conn, ocookie[i], NULL);
if (output == NULL)
{
continue;
}
asprintf(&name, "%.*s",
xcb_randr_get_output_info_name_length(output),
xcb_randr_get_output_info_name(output));
PDEBUG("Name: %s\n", name);
PDEBUG("id: %d\n" , outputs[i]);
PDEBUG("Size: %d x %d mm.\n", output->mm_width, output->mm_height);
if (XCB_NONE != output->crtc)
{
icookie = xcb_randr_get_crtc_info(conn, output->crtc, timestamp);
crtc = xcb_randr_get_crtc_info_reply(conn, icookie, NULL);
if (NULL == crtc)
{
return;
}
PDEBUG("CRTC: at %d, %d, size: %d x %d.\n", crtc->x, crtc->y,
crtc->width, crtc->height);
/* Check if it's a clone. */
clonemon = findclones(outputs[i], crtc->x, crtc->y);
if (NULL != clonemon)
{
PDEBUG("Monitor %s, id %d is a clone of %s, id %d. Skipping.\n",
name, outputs[i],
clonemon->name, clonemon->id);
continue;
}
/* Do we know this monitor already? */
if (NULL == (mon = findmonitor(outputs[i])))
{
PDEBUG("Monitor not known, adding to list.\n");
addmonitor(outputs[i], name, crtc->x, crtc->y, crtc->width,
crtc->height);
}
else
{
bool changed = false;
/*
* We know this monitor. Update information. If it's
* smaller than before, rearrange windows.
*/
PDEBUG("Known monitor. Updating info.\n");
if (crtc->x != mon->x)
{
mon->x = crtc->x;
changed = true;
}
if (crtc->y != mon->y)
{
mon->y = crtc->y;
changed = true;
}
if (crtc->width != mon->width)
{
mon->width = crtc->width;
changed = true;
}
if (crtc->height != mon->height)
{
mon->height = crtc->height;
changed = true;
}
if (changed)
{
arrbymon(mon);
}
}
free(crtc);
}
else
{
PDEBUG("Monitor not used at the moment.\n");
/*
* Check if it was used before. If it was, do something.
*/
if ((mon = findmonitor(outputs[i])))
{
struct item *item;
struct client *client;
/* Check all windows on this monitor and move them to
* the next or to the first monitor if there is no
* next.
*
* FIXME: Use per monitor workspace list instead of
* global window list.
*/
for (item = winlist; item != NULL; item = item->next)
{
client = item->data;
if (client->monitor == mon)
{
if (NULL == client->monitor->item->next)
{
if (NULL == monlist)
{
client->monitor = NULL;
}
else
{
client->monitor = monlist->data;
}
}
else
{
client->monitor =
client->monitor->item->next->data;
}
fitonscreen(client);
}
} /* for */
/* It's not active anymore. Forget about it. */
delmonitor(mon);
}
}
free(output);
} /* for */
}
void arrbymon(struct monitor *monitor)
{
struct item *item;
struct client *client;
PDEBUG("arrbymon\n");
/*
* Go through all windows on this monitor. If they don't fit on
* the new screen, move them around and resize them as necessary.
*
* FIXME: Use a per monitor workspace list instead of global
* windows list.
*/
for (item = winlist; item != NULL; item = item->next)
{
client = item->data;
if (client->monitor == monitor)
{
fitonscreen(client);
}
} /* for */
}
struct monitor *findmonitor(xcb_randr_output_t id)
{
struct item *item;
struct monitor *mon;
for (item = monlist; item != NULL; item = item->next)
{
mon = item->data;
if (id == mon->id)
{
PDEBUG("findmonitor: Found it. Output ID: %d\n", mon->id);
return mon;
}
PDEBUG("findmonitor: Goint to %p.\n", item->next);
}
return NULL;
}
struct monitor *findclones(xcb_randr_output_t id, int16_t x, int16_t y)
{
struct monitor *clonemon;
struct item *item;
for (item = monlist; item != NULL; item = item->next)
{
clonemon = item->data;
PDEBUG("Monitor %s: x, y: %d--%d, %d--%d.\n",
clonemon->name,
clonemon->x, clonemon->x + clonemon->width,
clonemon->y, clonemon->y + clonemon->height);
/* Check for same position. */
if (id != clonemon->id && clonemon->x == x && clonemon->y == y)
{
return clonemon;
}
}
return NULL;
}
struct monitor *findmonbycoord(int16_t x, int16_t y)
{
struct item *item;
struct monitor *mon;
for (item = monlist; item != NULL; item = item->next)
{
mon = item->data;
PDEBUG("Monitor %s: x, y: %d--%d, %d--%d.\n",
mon->name,
mon->x, mon->x + mon->width,
mon->y, mon->y + mon->height);
PDEBUG("Is %d,%d between them?\n", x, y);
if (x >= mon->x && x <= mon->x + mon->width
&& y >= mon->y && y <= mon->y + mon->height)
{
PDEBUG("findmonbycoord: Found it. Output ID: %d, name %s\n",
mon->id, mon->name);
return mon;
}
}
return NULL;
}
void delmonitor(struct monitor *mon)
{
PDEBUG("Deleting output %s.\n", mon->name);
free(mon->name);
freeitem(&monlist, NULL, mon->item);
}
struct monitor *addmonitor(xcb_randr_output_t id, char *name,
uint32_t x, uint32_t y, uint16_t width,
uint16_t height)
{
struct item *item;
struct monitor *mon;
if (NULL == (item = additem(&monlist)))
{
fprintf(stderr, "Out of memory.\n");
return NULL;
}
mon = malloc(sizeof (struct monitor));
if (NULL == mon)
{
fprintf(stderr, "Out of memory.\n");
return NULL;
}
item->data = mon;
mon->id = id;
mon->name = name;
mon->x = x;
mon->y = y;
mon->width = width;
mon->height = height;
mon->item = item;
return mon;
}
/* Raise window win to top of stack. */
void raisewindow(xcb_drawable_t win)
{
uint32_t values[] = { XCB_STACK_MODE_ABOVE };
if (screen->root == win || 0 == win)
{
return;
}
xcb_configure_window(conn, win,
XCB_CONFIG_WINDOW_STACK_MODE,
values);
xcb_flush(conn);
}
/*
* Set window client to either top or bottom of stack depending on
* where it is now.
*/
void raiseorlower(struct client *client)
{
uint32_t values[] = { XCB_STACK_MODE_OPPOSITE };
xcb_drawable_t win;
if (NULL == client)
{
return;
}
win = client->id;
xcb_configure_window(conn, win,
XCB_CONFIG_WINDOW_STACK_MODE,
values);
xcb_flush(conn);
}
void movelim(struct client *client)
{
int16_t mon_x;
int16_t mon_y;
uint16_t mon_width;
uint16_t mon_height;
if (NULL == client->monitor)
{
mon_x = 0;
mon_y = 0;
mon_width = screen->width_in_pixels;
mon_height = screen->height_in_pixels;
}
else
{
mon_x = client->monitor->x;
mon_y = client->monitor->y;
mon_width = client->monitor->width;
mon_height = client->monitor->height;
}
/* Is it outside the physical monitor? */
if (client->x < mon_x)
{
client->x = mon_x;
}
if (client->y < mon_y)
{
client->y = mon_y;
}
if (client->x + client->width > mon_x + mon_width - conf.borderwidth * 2)
{
client->x = (mon_x + mon_width - conf.borderwidth * 2) - client->width;
}
if (client->y + client->height > mon_y + mon_height - conf.borderwidth * 2)
{
client->y = (mon_y + mon_height - conf.borderwidth * 2)
- client->height;
}
movewindow(client->id, client->x, client->y);
}
/* Move window win to root coordinates x,y. */
void movewindow(xcb_drawable_t win, uint16_t x, uint16_t y)
{
uint32_t values[2];
if (screen->root == win || 0 == win)
{
/* Can't move root. */
return;
}
values[0] = x;
values[1] = y;
xcb_configure_window(conn, win, XCB_CONFIG_WINDOW_X
| XCB_CONFIG_WINDOW_Y, values);
xcb_flush(conn);
}
/* Change focus to next in window ring. */
void focusnext(bool reverse)
{
struct client *client = NULL;
#if DEBUG
if (NULL != focuswin)
{
PDEBUG("Focus now in win %d\n", focuswin->id);
}
#endif
if (NULL == wslist[curws])
{
PDEBUG("No windows to focus on in this workspace.\n");
return;
}
if (MCWM_TABBING != mode)
{
/*
* Remember what we last focused on. We need this when the
* MODKEY is released and we move the last focused window in
* the tabbing order list.
*/
lastfocuswin = focuswin;
mode = MCWM_TABBING;
PDEBUG("Began tabbing.\n");
}
/* If we currently have no focus focus first in list. */
if (NULL == focuswin || NULL == focuswin->wsitem[curws])
{
PDEBUG("Focusing first in list: %p\n", wslist[curws]);
client = wslist[curws]->data;
if (NULL != focuswin && NULL == focuswin->wsitem[curws])
{
PDEBUG("XXX Our focused window %d isn't on this workspace!\n",
focuswin->id);
}
}
else
{
if (reverse)
{
if (NULL == focuswin->wsitem[curws]->prev)
{
/*
* We were at the head of list. Focusing on last
* window in list unless we were already there.
*/
struct item *last = wslist[curws];
while (NULL != last->next)
last = last->next;
if (focuswin->wsitem[curws] != last->data)
{
PDEBUG("Beginning of list. Focusing last in list: %p\n",
last);
client = last->data;
}
}
else
{
/* Otherwise, focus the next in list. */
PDEBUG("Tabbing. Focusing next: %p.\n",
focuswin->wsitem[curws]->prev);
client = focuswin->wsitem[curws]->prev->data;
}
}
else
{
if (NULL == focuswin->wsitem[curws]->next)
{
/*
* We were at the end of list. Focusing on first window in
* list unless we were already there.
*/
if (focuswin->wsitem[curws] != wslist[curws]->data)
{
PDEBUG("End of list. Focusing first in list: %p\n",
wslist[curws]);
client = wslist[curws]->data;
}
}
else
{
/* Otherwise, focus the next in list. */
PDEBUG("Tabbing. Focusing next: %p.\n",
focuswin->wsitem[curws]->next);
client = focuswin->wsitem[curws]->next->data;
}
}
} /* if NULL focuswin */
if (NULL != client)
{
/*
* Raise window if it's occluded, then warp pointer into it and
* set keyboard focus to it.
*/
uint32_t values[] = { XCB_STACK_MODE_TOP_IF };
xcb_configure_window(conn, client->id, XCB_CONFIG_WINDOW_STACK_MODE,
values);
xcb_warp_pointer(conn, XCB_NONE, client->id, 0, 0, 0, 0,
client->width / 2, client->height / 2);
setfocus(client);
}
}
/* Mark window win as unfocused. */
void setunfocus(xcb_drawable_t win)
{
uint32_t values[1];
if (NULL == focuswin)
{
return;
}
if (focuswin->id == screen->root)
{
return;
}
/* Set new border colour. */
values[0] = conf.unfocuscol;
xcb_change_window_attributes(conn, win, XCB_CW_BORDER_PIXEL, values);
xcb_flush(conn);
}
/*
* Find client with client->id win in global window list.
*
* Returns client pointer or NULL if not found.
*/
struct client *findclient(xcb_drawable_t win)
{
struct item *item;
struct client *client;
for (item = winlist; item != NULL; item = item->next)
{
client = item->data;
if (win == client->id)
{
PDEBUG("findclient: Found it. Win: %d\n", client->id);
return client;
}
}
return NULL;
}
/* Set focus on window client. */
void setfocus(struct client *client)
{
uint32_t values[1];
/*
* If client is NULL, we focus on whatever the pointer is on.
*
* This is a pathological case, but it will make the poor user
* able to focus on windows anyway, even though this window
* manager might be buggy.
*/
if (NULL == client)
{
PDEBUG("setfocus: client was NULL!\n");
focuswin = NULL;
xcb_set_input_focus(conn, XCB_NONE, XCB_INPUT_FOCUS_POINTER_ROOT,
XCB_CURRENT_TIME);
xcb_flush(conn);
return;
}
/*
* Don't bother focusing on the root window or on the same window
* that already has focus.
*/
if (client->id == screen->root || client == focuswin)
{
return;
}
/* Set new border colour. */
if (client->fixed)
{
values[0] = conf.fixedcol;
}
else
{
values[0] = conf.focuscol;
}
xcb_change_window_attributes(conn, client->id, XCB_CW_BORDER_PIXEL,
values);
/* Unset last focus. */
if (NULL != focuswin)
{
setunfocus(focuswin->id);
}
/* Set new input focus. */
xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, client->id,
XCB_CURRENT_TIME);
xcb_flush(conn);
/* Remember the new window as the current focused window. */
focuswin = client;
}
int start(char *program)
{
pid_t pid;
pid = fork();
if (-1 == pid)
{
perror("fork");
return -1;
}
else if (0 == pid)
{
char *argv[2];
/* In the child. */
/*
* Make this process a new process leader, otherwise the
* terminal will die when the wm dies. Also, this makes any
* SIGCHLD go to this process when we fork again.
*/
if (-1 == setsid())
{
perror("setsid");
exit(1);
}
argv[0] = program;
argv[1] = NULL;
if (-1 == execvp(program, argv))
{
perror("execve");
exit(1);
}
exit(0);
}
return 0;
}
/* Resize with limit. */
void resizelim(struct client *client)
{
int16_t mon_x;
int16_t mon_y;
uint16_t mon_width;
uint16_t mon_height;
if (NULL == client->monitor)
{
mon_x = 0;
mon_y = 0;
mon_width = screen->width_in_pixels;
mon_height = screen->height_in_pixels;
}
else
{
mon_x = client->monitor->x;
mon_y = client->monitor->y;
mon_width = client->monitor->width;
mon_height = client->monitor->height;
}
/* Is it smaller than it wants to be? */
if (0 != client->min_height && client->height < client->min_height)
{
client->height = client->min_height;
}
if (0 != client->min_width && client->width < client->min_width)
{
client->width = client->min_width;
}
if (client->x + client->width + conf.borderwidth * 2 > mon_x + mon_width)
{
client->width = mon_width - ((client->x - mon_x) + conf.borderwidth
* 2);
}
if (client->y + client->height + conf.borderwidth * 2 > mon_y + mon_height)
{
client->height = mon_height - ((client->y - mon_y) + conf.borderwidth
* 2);
}
resize(client->id, client->width, client->height);
}
void moveresize(xcb_drawable_t win, uint16_t x, uint16_t y,
uint16_t width, uint16_t height)
{
uint32_t values[4];
if (screen->root == win || 0 == win)
{
/* Can't move or resize root. */
return;
}
PDEBUG("Moving to %d, %d, resizing to %d x %d.\n", x, y, width, height);
values[0] = x;
values[1] = y;
values[2] = width;
values[3] = height;
xcb_configure_window(conn, win,
XCB_CONFIG_WINDOW_X
| XCB_CONFIG_WINDOW_Y
| XCB_CONFIG_WINDOW_WIDTH
| XCB_CONFIG_WINDOW_HEIGHT, values);
xcb_flush(conn);
}
/* Resize window win to width,height. */
void resize(xcb_drawable_t win, uint16_t width, uint16_t height)
{
uint32_t values[2];
if (screen->root == win || 0 == win)
{
/* Can't resize root. */
return;
}
PDEBUG("Resizing to %d x %d.\n", width, height);
values[0] = width;
values[1] = height;
xcb_configure_window(conn, win,
XCB_CONFIG_WINDOW_WIDTH
| XCB_CONFIG_WINDOW_HEIGHT, values);
xcb_flush(conn);
}
/*
* Resize window client in direction direction. Direction is:
*
* h = left, that is decrease width.
*
* j = down, that is, increase height.
*
* k = up, that is, decrease height.
*
* l = right, that is, increase width.
*/
void resizestep(struct client *client, char direction)
{
int step_x = MOVE_STEP;
int step_y = MOVE_STEP;
if (NULL == client)
{
return;
}
if (client->maxed)
{
/* Can't resize a fully maximized window. */
return;
}
raisewindow(client->id);
if (client->width_inc > 1)
{
step_x = client->width_inc;
}
else
{
step_x = MOVE_STEP;
}
if (client->height_inc > 1)
{
step_y = client->height_inc;
}
else
{
step_y = MOVE_STEP;
}
switch (direction)
{
case 'h':
client->width = client->width - step_x;
break;
case 'j':
client->height = client->height + step_y;
break;
case 'k':
client->height = client->height - step_y;
break;
case 'l':
client->width = client->width + step_x;
break;
default:
PDEBUG("resizestep in unknown direction.\n");
break;
} /* switch direction */
resizelim(client);
/* If this window was vertically maximized, remember that it isn't now. */
if (client->vertmaxed)
{
client->vertmaxed = false;
}
xcb_warp_pointer(conn, XCB_NONE, client->id, 0, 0, 0, 0,
client->width / 2, client->height / 2);
xcb_flush(conn);
}
/*
* Move window win as a result of pointer motion to coordinates
* rel_x,rel_y.
*/
void mousemove(struct client *client, int rel_x, int rel_y)
{
client->x = rel_x;
client->y = rel_y;
movelim(client);
}
void mouseresize(struct client *client, int rel_x, int rel_y)
{
client->width = abs(rel_x - client->x);
client->height = abs(rel_y - client->y);
client->width -= (client->width - client->base_width) % client->width_inc;
client->height -= (client->height - client->base_height)
% client->height_inc;
PDEBUG("Trying to resize to %dx%d (%dx%d)\n", client->width, client->height,
(client->width - client->base_width) / client->width_inc,
(client->height - client->base_height) / client->height_inc);
resizelim(client);
/* If this window was vertically maximized, remember that it isn't now. */
if (client->vertmaxed)
{
client->vertmaxed = false;
}
}
void movestep(struct client *client, char direction)
{
int16_t start_x;
int16_t start_y;
if (NULL == client)
{
return;
}
if (client->maxed)
{
/* We can't move a fully maximized window. */
return;
}
/* Save pointer position so we can warp pointer here later. */
if (!getpointer(client->id, &start_x, &start_y))
{
return;
}
raisewindow(client->id);
switch (direction)
{
case 'h':
client->x = client->x - MOVE_STEP;
break;
case 'j':
client->y = client->y + MOVE_STEP;
break;
case 'k':
client->y = client->y - MOVE_STEP;
break;
case 'l':
client->x = client->x + MOVE_STEP;
break;
default:
PDEBUG("movestep: Moving in unknown direction.\n");
break;
} /* switch direction */
movelim(client);
/*
* If the pointer was inside the window to begin with, move
* pointer back to where it was, relative to the window.
*/
if (start_x > 0 - conf.borderwidth && start_x < client->width
+ conf.borderwidth && start_y > 0 - conf.borderwidth && start_y
< client->height + conf.borderwidth)
{
xcb_warp_pointer(conn, XCB_NONE, client->id, 0, 0, 0, 0,
start_x, start_y);
xcb_flush(conn);
}
}
void setborders(struct client *client, int width)
{
uint32_t values[1];
uint32_t mask = 0;
values[0] = width;
mask |= XCB_CONFIG_WINDOW_BORDER_WIDTH;
xcb_configure_window(conn, client->id, mask, &values[0]);
xcb_flush(conn);
}
void unmax(struct client *client)
{
uint32_t values[5];
uint32_t mask = 0;
if (NULL == client)
{
PDEBUG("unmax: client was NULL!\n");
return;
}
client->x = client->origsize.x;
client->y = client->origsize.y;
client->width = client->origsize.width;
client->height = client->origsize.height;
/* Restore geometry. */
if (client->maxed)
{
values[0] = client->x;
values[1] = client->y;
values[2] = client->width;
values[3] = client->height;
/* Set borders again. */
values[4] = conf.borderwidth;
mask =
XCB_CONFIG_WINDOW_X
| XCB_CONFIG_WINDOW_Y
| XCB_CONFIG_WINDOW_WIDTH
| XCB_CONFIG_WINDOW_HEIGHT
| XCB_CONFIG_WINDOW_BORDER_WIDTH;
}
else
{
values[0] = client->y;
values[1] = client->width;
values[2] = client->height;
mask = XCB_CONFIG_WINDOW_Y
| XCB_CONFIG_WINDOW_WIDTH
| XCB_CONFIG_WINDOW_HEIGHT;
}
xcb_configure_window(conn, client->id, mask, values);
/* Warp pointer to window or we might lose it. */
xcb_warp_pointer(conn, XCB_NONE, client->id, 0, 0, 0, 0,
client->width / 2, client->height / 2);
xcb_flush(conn);
}
void maximize(struct client *client)
{
uint32_t values[4];
uint32_t mask = 0;
int16_t mon_x;
int16_t mon_y;
uint16_t mon_width;
uint16_t mon_height;
if (NULL == client)
{
PDEBUG("maximize: client was NULL!\n");
return;
}
if (NULL == client->monitor)
{
mon_x = 0;
mon_y = 0;
mon_width = screen->width_in_pixels;
mon_height = screen->height_in_pixels;
}
else
{
mon_x = client->monitor->x;
mon_y = client->monitor->y;
mon_width = client->monitor->width;
mon_height = client->monitor->height;
}
/*
* Check if maximized already. If so, revert to stored
* geometry.
*/
if (client->maxed)
{
unmax(client);
client->maxed = false;
return;
}
/* Raise first. Pretty silly to maximize below something else. */
raisewindow(client->id);
/* FIXME: Store original geom in property as well? */
client->origsize.x = client->x;
client->origsize.y = client->y;
client->origsize.width = client->width;
client->origsize.height = client->height;
/* Remove borders. */
values[0] = 0;
mask = XCB_CONFIG_WINDOW_BORDER_WIDTH;
xcb_configure_window(conn, client->id, mask, values);
/* Move to top left and resize. */
client->x = mon_x;
client->y = mon_y;
client->width = mon_width;
client->height = mon_height;
values[0] = client->x;
values[1] = client->y;
values[2] = client->width;
values[3] = client->height;
xcb_configure_window(conn, client->id, XCB_CONFIG_WINDOW_X
| XCB_CONFIG_WINDOW_Y
| XCB_CONFIG_WINDOW_WIDTH
| XCB_CONFIG_WINDOW_HEIGHT, values);
xcb_flush(conn);
client->maxed = true;
}
void maxvert(struct client *client)
{
uint32_t values[2];
int16_t mon_y;
uint16_t mon_height;
if (NULL == client)
{
PDEBUG("maxvert: client was NULL\n");
return;
}
if (NULL == client->monitor)
{
mon_y = 0;
mon_height = screen->height_in_pixels;
}
else
{
mon_y = client->monitor->y;
mon_height = client->monitor->height;
}
/*
* Check if maximized already. If so, revert to stored geometry.
*/
if (client->vertmaxed)
{
unmax(client);
client->vertmaxed = false;
return;
}
/* Raise first. Pretty silly to maximize below something else. */
raisewindow(client->id);
/*
* Store original coordinates and geometry.
* FIXME: Store in property as well?
*/
client->origsize.x = client->x;
client->origsize.y = client->y;
client->origsize.width = client->width;
client->origsize.height = client->height;
client->y = mon_y;
/* Compute new height considering height increments and screen height. */
client->height = mon_height - conf.borderwidth * 2;
client->height -= (client->height - client->base_height)
% client->height_inc;
/* Move to top of screen and resize. */
values[0] = client->y;
values[1] = client->height;
xcb_configure_window(conn, client->id, XCB_CONFIG_WINDOW_Y
| XCB_CONFIG_WINDOW_HEIGHT, values);
xcb_flush(conn);
/* Remember that this client is vertically maximized. */
client->vertmaxed = true;
}
void hide(struct client *client)
{
long data[] = { XCB_ICCCM_WM_STATE_ICONIC, XCB_NONE };
/*
* Unmap window and declare iconic.
*
* Unmapping will generate an UnmapNotify event so we can forget
* about the window later.
*/
xcb_unmap_window(conn, client->id);
xcb_change_property(conn, XCB_PROP_MODE_REPLACE, client->id,
wm_state, wm_state, 32, 2, data);
xcb_flush(conn);
}
bool getpointer(xcb_drawable_t win, int16_t *x, int16_t *y)
{
xcb_query_pointer_reply_t *pointer;
pointer
= xcb_query_pointer_reply(conn, xcb_query_pointer(conn, win), 0);
if (NULL == pointer)
{
return false;
}
*x = pointer->win_x;
*y = pointer->win_y;
free(pointer);
return true;
}
bool getgeom(xcb_drawable_t win, int16_t *x, int16_t *y, uint16_t *width,
uint16_t *height)
{
xcb_get_geometry_reply_t *geom;
geom
= xcb_get_geometry_reply(conn, xcb_get_geometry(conn, win), NULL);
if (NULL == geom)
{
return false;
}
*x = geom->x;
*y = geom->y;
*width = geom->width;
*height = geom->height;
free(geom);
return true;
}
void topleft(void)
{
int16_t pointx;
int16_t pointy;
int16_t mon_x;
int16_t mon_y;
if (NULL == focuswin)
{
return;
}
if (NULL == focuswin->monitor)
{
mon_x = 0;
mon_y = 0;
}
else
{
mon_x = focuswin->monitor->x;
mon_y = focuswin->monitor->y;
}
raisewindow(focuswin->id);
if (!getpointer(focuswin->id, &pointx, &pointy))
{
return;
}
focuswin->x = mon_x;
focuswin->y = mon_y;
movewindow(focuswin->id, focuswin->x, focuswin->y);
xcb_warp_pointer(conn, XCB_NONE, focuswin->id, 0, 0, 0, 0,
pointx, pointy);
xcb_flush(conn);
}
void topright(void)
{
int16_t pointx;
int16_t pointy;
int16_t mon_x;
uint16_t mon_y;
uint16_t mon_width;
if (NULL == focuswin)
{
return;
}
if (NULL == focuswin->monitor)
{
mon_width = screen->width_in_pixels;
mon_x = 0;
mon_y = 0;
}
else
{
mon_width = focuswin->monitor->width;
mon_x = focuswin->monitor->x;
mon_y = focuswin->monitor->y;
}
raisewindow(focuswin->id);
if (!getpointer(focuswin->id, &pointx, &pointy))
{
return;
}
focuswin->x = mon_x + mon_width -
(focuswin->width + conf.borderwidth * 2);
focuswin->y = mon_y;
movewindow(focuswin->id, focuswin->x, focuswin->y);
xcb_warp_pointer(conn, XCB_NONE, focuswin->id, 0, 0, 0, 0,
pointx, pointy);
xcb_flush(conn);
}
void botleft(void)
{
int16_t pointx;
int16_t pointy;
int16_t mon_x;
int16_t mon_y;
uint16_t mon_height;
if (NULL == focuswin)
{
return;
}
if (NULL == focuswin->monitor)
{
mon_x = 0;
mon_y = 0;
mon_height = screen->height_in_pixels;
}
else
{
mon_x = focuswin->monitor->x;
mon_y = focuswin->monitor->y;
mon_height = focuswin->monitor->height;
}
raisewindow(focuswin->id);
if (!getpointer(focuswin->id, &pointx, &pointy))
{
return;
}
focuswin->x = mon_x;
focuswin->y = mon_y + mon_height - (focuswin->height + conf.borderwidth
* 2);
movewindow(focuswin->id, focuswin->x, focuswin->y);
xcb_warp_pointer(conn, XCB_NONE, focuswin->id, 0, 0, 0, 0,
pointx, pointy);
xcb_flush(conn);
}
void botright(void)
{
int16_t pointx;
int16_t pointy;
int16_t mon_x;
int16_t mon_y;
uint16_t mon_width;
uint16_t mon_height;
if (NULL == focuswin)
{
return;
}
if (NULL == focuswin->monitor)
{
mon_x = 0;
mon_y = 0;
mon_width = screen->width_in_pixels;;
mon_height = screen->height_in_pixels;
}
else
{
mon_x = focuswin->monitor->x;
mon_y = focuswin->monitor->y;
mon_width = focuswin->monitor->width;
mon_height = focuswin->monitor->height;
}
raisewindow(focuswin->id);
if (!getpointer(focuswin->id, &pointx, &pointy))
{
return;
}
focuswin->x = mon_x + mon_width - (focuswin->width + conf.borderwidth * 2);
focuswin->y = mon_y + mon_height - (focuswin->height + conf.borderwidth
* 2);
movewindow(focuswin->id, focuswin->x, focuswin->y);
xcb_warp_pointer(conn, XCB_NONE, focuswin->id, 0, 0, 0, 0,
pointx, pointy);
xcb_flush(conn);
}
void deletewin(void)
{
xcb_get_property_cookie_t cookie;
xcb_icccm_get_wm_protocols_reply_t protocols;
bool use_delete = false;
uint32_t i;
if (NULL == focuswin)
{
return;
}
/* Check if WM_DELETE is supported. */
cookie = xcb_icccm_get_wm_protocols_unchecked(conn, focuswin->id,
wm_protocols);
if (xcb_icccm_get_wm_protocols_reply(conn, cookie, &protocols, NULL) == 1)
{
for (i = 0; i < protocols.atoms_len; i++)
{
if (protocols.atoms[i] == wm_delete_window)
{
use_delete = true;
}
}
}
xcb_icccm_get_wm_protocols_reply_wipe(&protocols);
if (use_delete)
{
xcb_client_message_event_t ev = {
.response_type = XCB_CLIENT_MESSAGE,
.format = 32,
.sequence = 0,
.window = focuswin->id,
.type = wm_protocols,
.data.data32 = { wm_delete_window, XCB_CURRENT_TIME }
};
xcb_send_event(conn, false, focuswin->id,
XCB_EVENT_MASK_NO_EVENT, (char *) &ev);
}
else
{
xcb_kill_client(conn, focuswin->id);
}
xcb_flush(conn);
}
void prevscreen(void)
{
struct item *item;
if (NULL == focuswin || NULL == focuswin->monitor)
{
return;
}
item = focuswin->monitor->item->prev;
if (NULL == item)
{
return;
}
focuswin->monitor = item->data;
raisewindow(focuswin->id);
fitonscreen(focuswin);
movelim(focuswin);
xcb_warp_pointer(conn, XCB_NONE, focuswin->id, 0, 0, 0, 0,
0, 0);
xcb_flush(conn);
}
void nextscreen(void)
{
struct item *item;
if (NULL == focuswin || NULL == focuswin->monitor)
{
return;
}
item = focuswin->monitor->item->next;
if (NULL == item)
{
return;
}
focuswin->monitor = item->data;
raisewindow(focuswin->id);
fitonscreen(focuswin);
movelim(focuswin);
xcb_warp_pointer(conn, XCB_NONE, focuswin->id, 0, 0, 0, 0,
0, 0);
xcb_flush(conn);
}
void handle_keypress(xcb_key_press_event_t *ev)
{
int i;
key_enum_t key;
for (key = KEY_MAX, i = KEY_F; i < KEY_MAX; i ++)
{
if (ev->detail == keys[i].keycode && 0 != keys[i].keycode)
{
key = i;
break;
}
}
if (key == KEY_MAX)
{
PDEBUG("Unknown key pressed.\n");
/*
* We don't know what to do with this key. Send this key press
* event to the focused window.
*/
xcb_send_event(conn, false, XCB_SEND_EVENT_DEST_ITEM_FOCUS,
XCB_EVENT_MASK_NO_EVENT, (char *) ev);
xcb_flush(conn);
return;
}
if (MCWM_TABBING == mode && key != KEY_TAB && key != KEY_BACKTAB)
{
/* First finish tabbing around. Then deal with the next key. */
finishtabbing();
}
/* Is it shifted? */
if (ev->state & SHIFTMOD)
{
switch (key)
{
case KEY_H: /* h */
resizestep(focuswin, 'h');
break;
case KEY_J: /* j */
resizestep(focuswin, 'j');
break;
case KEY_K: /* k */
resizestep(focuswin, 'k');
break;
case KEY_L: /* l */
resizestep(focuswin, 'l');
break;
case KEY_TAB: /* shifted tab counts as backtab */
focusnext(true);
break;
default:
/* Ignore other shifted keys. */
break;
}
}
else
{
switch (key)
{
case KEY_RET: /* return */
start(conf.terminal);
break;
case KEY_F: /* f */
fixwindow(focuswin, true);
break;
case KEY_H: /* h */
movestep(focuswin, 'h');
break;
case KEY_J: /* j */
movestep(focuswin, 'j');
break;
case KEY_K: /* k */
movestep(focuswin, 'k');
break;
case KEY_L: /* l */
movestep(focuswin, 'l');
break;
case KEY_TAB: /* tab */
focusnext(false);
break;
case KEY_BACKTAB: /* backtab */
focusnext(true);
break;
case KEY_M: /* m */
maxvert(focuswin);
break;
case KEY_R: /* r*/
raiseorlower(focuswin);
break;
case KEY_X: /* x */
maximize(focuswin);
break;
case KEY_1:
changeworkspace(0);
break;
case KEY_2:
changeworkspace(1);
break;
case KEY_3:
changeworkspace(2);
break;
case KEY_4:
changeworkspace(3);
break;
case KEY_5:
changeworkspace(4);
break;
case KEY_6:
changeworkspace(5);
break;
case KEY_7:
changeworkspace(6);
break;
case KEY_8:
changeworkspace(7);
break;
case KEY_9:
changeworkspace(8);
break;
case KEY_0:
changeworkspace(9);
break;
case KEY_Y:
topleft();
break;
case KEY_U:
topright();
break;
case KEY_B:
botleft();
break;
case KEY_N:
botright();
break;
case KEY_END:
deletewin();
break;
case KEY_PREVSCR:
prevscreen();
break;
case KEY_NEXTSCR:
nextscreen();
break;
case KEY_ICONIFY:
if (conf.allowicons)
{
hide(focuswin);
}
break;
case KEY_PREVWS:
if (curws > 0)
{
changeworkspace(curws - 1);
}
else
{
changeworkspace(WORKSPACES - 1);
}
break;
case KEY_NEXTWS:
changeworkspace((curws + 1) % WORKSPACES);
break;
default:
/* Ignore other keys. */
break;
} /* switch unshifted */
}
} /* handle_keypress() */
/* Helper function to configure a window. */
void configwin(xcb_window_t win, uint16_t mask, struct winconf wc)
{
uint32_t values[7];
int i = -1;
if (mask & XCB_CONFIG_WINDOW_X)
{
mask |= XCB_CONFIG_WINDOW_X;
i ++;
values[i] = wc.x;
}
if (mask & XCB_CONFIG_WINDOW_Y)
{
mask |= XCB_CONFIG_WINDOW_Y;
i ++;
values[i] = wc.y;
}
if (mask & XCB_CONFIG_WINDOW_WIDTH)
{
mask |= XCB_CONFIG_WINDOW_WIDTH;
i ++;
values[i] = wc.width;
}
if (mask & XCB_CONFIG_WINDOW_HEIGHT)
{
mask |= XCB_CONFIG_WINDOW_HEIGHT;
i ++;
values[i] = wc.height;
}
if (mask & XCB_CONFIG_WINDOW_SIBLING)
{
mask |= XCB_CONFIG_WINDOW_SIBLING;
i ++;
values[i] = wc.sibling;
}
if (mask & XCB_CONFIG_WINDOW_STACK_MODE)
{
mask |= XCB_CONFIG_WINDOW_STACK_MODE;
i ++;
values[i] = wc.stackmode;
}
if (-1 != i)
{
xcb_configure_window(conn, win, mask, values);
xcb_flush(conn);
}
}
void configurerequest(xcb_configure_request_event_t *e)
{
struct client *client;
struct winconf wc;
int16_t mon_x;
int16_t mon_y;
uint16_t mon_width;
uint16_t mon_height;
PDEBUG("event: Configure request. mask = %d\n", e->value_mask);
/* Find the client. */
if ((client = findclient(e->window)))
{
/* Find monitor position and size. */
if (NULL == client || NULL == client->monitor)
{
mon_x = 0;
mon_y = 0;
mon_width = screen->width_in_pixels;
mon_height = screen->height_in_pixels;
}
else
{
mon_x = client->monitor->x;
mon_y = client->monitor->y;
mon_width = client->monitor->width;
mon_height = client->monitor->height;
}
#if 0
/*
* We ignore moves the user haven't initiated, that is do
* nothing on XCB_CONFIG_WINDOW_X and XCB_CONFIG_WINDOW_Y
* ConfigureRequests.
*
* Code here if we ever change our minds or if you, dear user,
* wants this functionality.
*/
if (e->value_mask & XCB_CONFIG_WINDOW_X)
{
/* Don't move window if maximized. Don't move off the screen. */
if (!client->maxed && e->x > 0)
{
client->x = e->x;
}
}
if (e->value_mask & XCB_CONFIG_WINDOW_Y)
{
/*
* Don't move window if maximized. Don't move off the
* screen.
*/
if (!client->maxed && !client->vertmaxed && e->y > 0)
{
client->y = e->y;
}
}
#endif
if (e->value_mask & XCB_CONFIG_WINDOW_WIDTH)
{
/* Don't resize if maximized. */
if (!client->maxed)
{
client->width = e->width;
}
}
if (e->value_mask & XCB_CONFIG_WINDOW_HEIGHT)
{
/* Don't resize if maximized. */
if (!client->maxed && !client->vertmaxed)
{
client->height = e->height;
}
}
/*
* XXX Do we really need to pass on sibling and stack mode
* configuration? Do we want to?
*/
if (e->value_mask & XCB_CONFIG_WINDOW_SIBLING)
{
uint32_t values[1];
values[0] = e->sibling;
xcb_configure_window(conn, e->window,
XCB_CONFIG_WINDOW_SIBLING,
values);
xcb_flush(conn);
}
if (e->value_mask & XCB_CONFIG_WINDOW_STACK_MODE)
{
uint32_t values[1];
values[0] = e->stack_mode;
xcb_configure_window(conn, e->window,
XCB_CONFIG_WINDOW_STACK_MODE,
values);
xcb_flush(conn);
}
/* Check if window fits on screen after resizing. */
if (client->x + client->width + 2 * conf.borderwidth
> mon_x + mon_width)
{
/*
* See if it fits if we move away the window from the
* right edge of the screen.
*/
client->x = mon_x + mon_width
- (client->width + 2 * conf.borderwidth);
/*
* If we moved over the left screen edge, move back and
* fit exactly on screen.
*/
if (client->x < mon_x)
{
client->x = mon_x;
client->width = mon_width - 2 * conf.borderwidth;
}
}
if (client->y + client->height + 2 * conf.borderwidth
> mon_y + mon_height)
{
/*
* See if it fits if we move away the window from the
* bottom edge.
*/
client->y = mon_y + mon_height
- (client->height + 2 * conf.borderwidth);
/*
* If we moved over the top screen edge, move back and fit
* on screen.
*/
if (client->y < mon_y)
{
PDEBUG("over the edge: y < %d\n", mon_y);
client->y = mon_y;
client->height = mon_height - 2 * conf.borderwidth;
}
}
moveresize(client->id, client->x, client->y, client->width,
client->height);
}
else
{
PDEBUG("We don't know about this window yet.\n");
/*
* Unmapped window. Just pass all options except border
* width.
*/
wc.x = e->x;
wc.y = e->y;
wc.width = e->width;
wc.height = e->height;
wc.sibling = e->sibling;
wc.stackmode = e->stack_mode;
configwin(e->window, e->value_mask, wc);
}
}
void events(void)
{
xcb_generic_event_t *ev;
int16_t mode_x = 0; /* X coord when in special mode */
int16_t mode_y = 0; /* Y coord when in special mode */
int fd; /* Our X file descriptor */
fd_set in; /* For select */
int found; /* Ditto. */
/* Get the file descriptor so we can do select() on it. */
fd = xcb_get_file_descriptor(conn);
for (sigcode = 0; 0 == sigcode;)
{
/* Prepare for select(). */
FD_ZERO(&in);
FD_SET(fd, &in);
/*
* Check for events, again and again. When poll returns NULL
* (and it does that a lot), we block on select() until the
* event file descriptor gets readable again.
*
* We do it this way instead of xcb_wait_for_event() since
* select() will return if we were interrupted by a signal. We
* like that.
*/
ev = xcb_poll_for_event(conn);
if (NULL == ev)
{
PDEBUG("xcb_poll_for_event() returned NULL.\n");
/*
* Check if we have an unrecoverable connection error,
* like a disconnected X server.
*/
if (xcb_connection_has_error(conn))
{
cleanup(0);
exit(1);
}
found = select(fd + 1, &in, NULL, NULL, NULL);
if (-1 == found)
{
if (EINTR == errno)
{
/* We received a signal. Break out of loop. */
break;
}
else
{
/* Something was seriously wrong with select(). */
fprintf(stderr, "mcwm: select failed.");
cleanup(0);
exit(1);
}
}
else
{
/* We found more events. Goto start of loop. */
continue;
}
}
#ifdef DEBUG
if (ev->response_type <= MAXEVENTS)
{
PDEBUG("Event: %s\n", evnames[ev->response_type]);
}
else
{
PDEBUG("Event: #%d. Not known.\n", ev->response_type);
}
#endif
/* Note that we ignore XCB_RANDR_NOTIFY. */
if (ev->response_type
== randrbase + XCB_RANDR_SCREEN_CHANGE_NOTIFY)
{
PDEBUG("RANDR screen change notify. Checking outputs.\n");
getrandr();
free(ev);
continue;
}
switch (ev->response_type & ~0x80)
{
case XCB_MAP_REQUEST:
{
xcb_map_request_event_t *e;
PDEBUG("event: Map request.\n");
e = (xcb_map_request_event_t *) ev;
newwin(e->window);
}
break;
case XCB_DESTROY_NOTIFY:
{
xcb_destroy_notify_event_t *e;
e = (xcb_destroy_notify_event_t *) ev;
/*
* If we had focus or our last focus in this window,
* forget about the focus.
*
* We will get an EnterNotify if there's another window
* under the pointer so we can set the focus proper later.
*/
if (NULL != focuswin)
{
if (focuswin->id == e->window)
{
focuswin = NULL;
}
}
if (NULL != lastfocuswin)
{
if (lastfocuswin->id == e->window)
{
lastfocuswin = NULL;
}
}
/*
* Find this window in list of clients and forget about
* it.
*/
forgetwin(e->window);
}
break;
case XCB_BUTTON_PRESS:
{
xcb_button_press_event_t *e;
e = (xcb_button_press_event_t *) ev;
PDEBUG("Button %d pressed in window %ld, subwindow %d "
"coordinates (%d,%d)\n",
e->detail, (long)e->event, e->child, e->event_x,
e->event_y);
if (0 == e->child)
{
/* Mouse click on root window. Start programs? */
switch (e->detail)
{
case 1: /* Mouse button one. */
start(MOUSE1);
break;
case 2: /* Middle mouse button. */
start(MOUSE2);
break;
case 3: /* Mouse button three. */
start(MOUSE3);
break;
default:
break;
} /* switch */
/* Break out of event switch. */
break;
}
/*
* If we don't have any currently focused window, we can't
* do anything. We don't want to do anything if the mouse
* cursor is in the wrong window (root window or a panel,
* for instance). There is a limit to sloppy focus.
*/
if (NULL == focuswin || focuswin->id != e->child)
{
break;
}
/*
* If middle button was pressed, raise window or lower
* it if it was already on top.
*/
if (2 == e->detail)
{
raiseorlower(focuswin);
}
else
{
int16_t pointx;
int16_t pointy;
/* We're moving or resizing. */
/*
* Get and save pointer position inside the window
* so we can go back to it when we're done moving
* or resizing.
*/
if (!getpointer(focuswin->id, &pointx, &pointy))
{
break;
}
mode_x = pointx;
mode_y = pointy;
/* Raise window. */
raisewindow(focuswin->id);
/* Mouse button 1 was pressed. */
if (1 == e->detail)
{
mode = MCWM_MOVE;
/*
* Warp pointer to upper left of window before
* starting move.
*/
xcb_warp_pointer(conn, XCB_NONE, focuswin->id, 0, 0, 0, 0,
1, 1);
}
else
{
/* Mouse button 3 was pressed. */
mode = MCWM_RESIZE;
/* Warp pointer to lower right. */
xcb_warp_pointer(conn, XCB_NONE, focuswin->id, 0, 0, 0,
0, focuswin->width, focuswin->height);
}
/*
* Take control of the pointer in the root window
* and confine it to root.
*
* Give us events when the key is released or if
* any motion occurs with the key held down.
*
* Keep updating everything else.
*
* Don't use any new cursor.
*/
xcb_grab_pointer(conn, 0, screen->root,
XCB_EVENT_MASK_BUTTON_RELEASE
| XCB_EVENT_MASK_BUTTON_MOTION
| XCB_EVENT_MASK_POINTER_MOTION_HINT,
XCB_GRAB_MODE_ASYNC,
XCB_GRAB_MODE_ASYNC,
screen->root,
XCB_NONE,
XCB_CURRENT_TIME);
xcb_flush(conn);
PDEBUG("mode now : %d\n", mode);
}
}
break;
case XCB_MOTION_NOTIFY:
{
xcb_query_pointer_reply_t *pointer;
/*
* We can't do anything if we don't have a focused window
* or if it's fully maximized.
*/
if (NULL == focuswin || focuswin->maxed)
{
break;
}
/*
* This is not really a real notify, but just a hint that
* the mouse pointer moved. This means we need to get the
* current pointer position ourselves.
*/
pointer = xcb_query_pointer_reply(
conn, xcb_query_pointer(conn, screen->root), 0);
if (NULL == pointer)
{
PDEBUG("Couldn't get pointer position.\n");
break;
}
/*
* Our pointer is moving and since we even get this event
* we're either resizing or moving a window.
*/
if (mode == MCWM_MOVE)
{
mousemove(focuswin, pointer->root_x, pointer->root_y);
}
else if (mode == MCWM_RESIZE)
{
mouseresize(focuswin, pointer->root_x, pointer->root_y);
}
else
{
PDEBUG("Motion event when we're not moving our resizing!\n");
}
free(pointer);
}
break;
case XCB_BUTTON_RELEASE:
PDEBUG("Mouse button released! mode = %d\n", mode);
if (0 == mode)
{
/*
* Mouse button released, but not in a saved mode. Do
* nothing.
*/
break;
}
else
{
int16_t x;
int16_t y;
/* We're finished moving or resizing. */
if (NULL == focuswin)
{
/*
* We don't seem to have a focused window! Just
* ungrab and reset the mode.
*/
PDEBUG("No focused window when finished moving or "
"resizing!");
xcb_ungrab_pointer(conn, XCB_CURRENT_TIME);
xcb_flush(conn); /* Important! */
mode = 0;
break;
}
/*
* We will get an EnterNotify and focus another window
* if the pointer just happens to be on top of another
* window when we ungrab the pointer, so we have to
* warp the pointer before to prevent this.
*
* Move to saved position within window or if that
* position is now outside current window, move inside
* window.
*/
if (mode_x > focuswin->width)
{
x = focuswin->width / 2;
if (0 == x)
{
x = 1;
}
}
else
{
x = mode_x;
}
if (mode_y > focuswin->height)
{
y = focuswin->height / 2;
if (0 == y)
{
y = 1;
}
}
else
{
y = mode_y;
}
xcb_warp_pointer(conn, XCB_NONE, focuswin->id, 0, 0, 0, 0,
x, y);
xcb_ungrab_pointer(conn, XCB_CURRENT_TIME);
xcb_flush(conn); /* Important! */
mode = 0;
PDEBUG("mode now = %d\n", mode);
}
break;
case XCB_KEY_PRESS:
{
xcb_key_press_event_t *e = (xcb_key_press_event_t *)ev;
PDEBUG("Key %d pressed\n", e->detail);
handle_keypress(e);
}
break;
case XCB_KEY_RELEASE:
{
xcb_key_release_event_t *e = (xcb_key_release_event_t *)ev;
unsigned i;
PDEBUG("Key %d released.\n", e->detail);
if (MCWM_TABBING == mode)
{
/*
* Check if it's the that was released was a key
* generating the MODKEY mask.
*/
for (i = 0; i < modkeys.len; i ++)
{
PDEBUG("Is it %d?\n", modkeys.keycodes[i]);
if (e->detail == modkeys.keycodes[i])
{
finishtabbing();
/* Get out of for... */
break;
}
} /* for keycodes. */
} /* if tabbing. */
}
break;
case XCB_ENTER_NOTIFY:
{
xcb_enter_notify_event_t *e = (xcb_enter_notify_event_t *)ev;
struct client *client;
PDEBUG("event: Enter notify eventwin %d, child %d, detail %d.\n",
e->event,
e->child,
e->detail);
/*
* If this isn't a normal enter notify, don't bother.
*
* We also need ungrab events, since these will be
* generated on button and key grabs and if the user for
* some reason presses a button on the root and then moves
* the pointer to our window and releases the button, we
* get an Ungrab EnterNotify.
*
* The other cases means the pointer is grabbed and that
* either means someone is using it for menu selections or
* that we're moving or resizing. We don't want to change
* focus in those cases.
*/
if (e->mode == XCB_NOTIFY_MODE_NORMAL
|| e->mode == XCB_NOTIFY_MODE_UNGRAB)
{
/*
* If we're entering the same window we focus now,
* then don't bother focusing.
*/
if (NULL == focuswin || e->event != focuswin->id)
{
/*
* Otherwise, set focus to the window we just
* entered if we can find it among the windows we
* know about. If not, just keep focus in the old
* window.
*/
client = findclient(e->event);
if (NULL != client)
{
if (MCWM_TABBING != mode)
{
/*
* We are focusing on a new window. Since
* we're not currently tabbing around the
* window ring, we need to update the
* current workspace window list: Move
* first the old focus to the head of the
* list and then the new focus to the head
* of the list.
*/
if (NULL != focuswin)
{
movetohead(&wslist[curws],
focuswin->wsitem[curws]);
lastfocuswin = NULL;
}
movetohead(&wslist[curws], client->wsitem[curws]);
} /* if not tabbing */
setfocus(client);
}
}
}
}
break;
case XCB_CONFIGURE_NOTIFY:
{
xcb_configure_notify_event_t *e
= (xcb_configure_notify_event_t *)ev;
if (e->window == screen->root)
{
/*
* When using RANDR or Xinerama, the root can change
* geometry when the user adds a new screen, tilts
* their screen 90 degrees or whatnot. We might need
* to rearrange windows to be visible.
*
* We might get notified for several reasons, not just
* if the geometry changed. If the geometry is
* unchanged we do nothing.
*/
PDEBUG("Notify event for root!\n");
PDEBUG("Possibly a new root geometry: %dx%d\n",
e->width, e->height);
if (e->width == screen->width_in_pixels
&& e->height == screen->height_in_pixels)
{
/* Root geometry is really unchanged. Do nothing. */
PDEBUG("Hey! Geometry didn't change.\n");
}
else
{
screen->width_in_pixels = e->width;
screen->height_in_pixels = e->height;
/* Check for RANDR. */
if (-1 == randrbase)
{
/* We have no RANDR so we rearrange windows to
* the new root geometry here.
*
* With RANDR enabled, we handle this per
* screen getrandr() when we receive an
* XCB_RANDR_SCREEN_CHANGE_NOTIFY event.
*/
arrangewindows();
}
}
}
}
break;
case XCB_CONFIGURE_REQUEST:
configurerequest((xcb_configure_request_event_t *) ev);
break;
case XCB_CLIENT_MESSAGE:
{
xcb_client_message_event_t *e
= (xcb_client_message_event_t *)ev;
if (conf.allowicons)
{
if (e->type == wm_change_state
&& e->format == 32
&& e->data.data32[0] == XCB_ICCCM_WM_STATE_ICONIC)
{
long data[] = { XCB_ICCCM_WM_STATE_ICONIC, XCB_NONE };
/* Unmap window and declare iconic. */
xcb_unmap_window(conn, e->window);
xcb_change_property(conn, XCB_PROP_MODE_REPLACE, e->window,
wm_state, wm_state, 32, 2, data);
xcb_flush(conn);
}
} /* if */
}
break;
case XCB_CIRCULATE_REQUEST:
{
xcb_circulate_request_event_t *e
= (xcb_circulate_request_event_t *)ev;
/*
* Subwindow e->window to parent e->event is about to be
* restacked.
*
* Just do what was requested, e->place is either
* XCB_PLACE_ON_TOP or _ON_BOTTOM. We don't care.
*/
xcb_circulate_window(conn, e->window, e->place);
}
break;
case XCB_MAPPING_NOTIFY:
{
xcb_mapping_notify_event_t *e
= (xcb_mapping_notify_event_t *)ev;
/*
* XXX Gah! We get a new notify message for *every* key!
* We want to know when the entire keyboard is finished.
* Impossible? Better handling somehow?
*/
/*
* We're only interested in keys and modifiers, not
* pointer mappings, for instance.
*/
if (e->request != XCB_MAPPING_MODIFIER
&& e->request != XCB_MAPPING_KEYBOARD)
{
break;
}
/* Forget old key bindings. */
xcb_ungrab_key(conn, XCB_GRAB_ANY, screen->root, XCB_MOD_MASK_ANY);
/* Use the new ones. */
setupkeys();
}
break;
case XCB_UNMAP_NOTIFY:
{
xcb_unmap_notify_event_t *e =
(xcb_unmap_notify_event_t *)ev;
struct item *item;
struct client *client;
/*
* Find the window in our *current* workspace list, then
* forget about it. If it gets mapped, we add it to our
* lists again then.
*
* Note that we might not know about the window we got the
* UnmapNotify event for. It might be a window we just
* unmapped on *another* workspace when changing
* workspaces, for instance, or it might be a window with
* override redirect set. This is not an error.
*
* XXX We might need to look in the global window list,
* after all. Consider if a window is unmapped on our last
* workspace while changing workspaces... If we do this,
* we need to keep track of our own windows and ignore
* UnmapNotify on them.
*/
for (item = wslist[curws]; item != NULL; item = item->next)
{
client = item->data;
if (client->id == e->window)
{
PDEBUG("Forgetting about %d\n", e->window);
if (focuswin == client)
{
focuswin = NULL;
}
forgetclient(client);
/* We're finished. Break out of for loop. */
break;
}
} /* for */
}
break;
} /* switch */
/* Forget about this event. */
free(ev);
}
}
void printhelp(void)
{
printf("mcwm: Usage: mcwm [-b] [-t terminal-program] [-f colour] "
"[-u colour] [-x colour] \n");
printf(" -b means draw no borders\n");
printf(" -t urxvt will start urxvt when MODKEY + Return is pressed\n");
printf(" -f colour sets colour for focused window borders of focused "
"to a named color.\n");
printf(" -u colour sets colour for unfocused window borders.");
printf(" -x color sets colour for fixed window borders.");
}
void sigcatch(int sig)
{
sigcode = sig;
}
/*
* Get a defined atom from the X server.
*/
xcb_atom_t getatom(char *atom_name)
{
xcb_intern_atom_cookie_t atom_cookie;
xcb_atom_t atom;
xcb_intern_atom_reply_t *rep;
atom_cookie = xcb_intern_atom(conn, 0, strlen(atom_name), atom_name);
rep = xcb_intern_atom_reply(conn, atom_cookie, NULL);
if (NULL != rep)
{
atom = rep->atom;
free(rep);
return atom;
}
/*
* XXX Note that we return 0 as an atom if anything goes wrong.
* Might become interesting.
*/
return 0;
}
int main(int argc, char **argv)
{
uint32_t mask = 0;
uint32_t values[2];
int ch; /* Option character */
xcb_void_cookie_t cookie;
xcb_generic_error_t *error;
xcb_drawable_t root;
char *focuscol;
char *unfocuscol;
char *fixedcol;
int scrno;
xcb_screen_iterator_t iter;
/* Install signal handlers. */
/* We ignore child exists. Don't create zombies. */
if (SIG_ERR == signal(SIGCHLD, SIG_IGN))
{
perror("mcwm: signal");
exit(1);
}
if (SIG_ERR == signal(SIGINT, sigcatch))
{
perror("mcwm: signal");
exit(1);
}
if (SIG_ERR == signal(SIGTERM, sigcatch))
{
perror("mcwm: signal");
exit(1);
}
/* Set up defaults. */
conf.borderwidth = BORDERWIDTH;
conf.terminal = TERMINAL;
conf.allowicons = ALLOWICONS;
focuscol = FOCUSCOL;
unfocuscol = UNFOCUSCOL;
fixedcol = FIXEDCOL;
while (1)
{
ch = getopt(argc, argv, "b:it:f:u:x:");
if (-1 == ch)
{
/* No more options, break out of while loop. */
break;
}
switch (ch)
{
case 'b':
/* Border width */
conf.borderwidth = atoi(optarg);
break;
case 'i':
conf.allowicons = true;
break;
case 't':
conf.terminal = optarg;
break;
case 'f':
focuscol = optarg;
break;
case 'u':
unfocuscol = optarg;
break;
case 'x':
fixedcol = optarg;
break;
default:
printhelp();
exit(0);
} /* switch */
}
/*
* Use $DISPLAY. After connecting scrno will contain the value of
* the display's screen.
*/
conn = xcb_connect(NULL, &scrno);
if (xcb_connection_has_error(conn))
{
perror("xcb_connect");
exit(1);
}
/* Find our screen. */
iter = xcb_setup_roots_iterator(xcb_get_setup(conn));
for (int i = 0; i < scrno; ++ i)
{
xcb_screen_next(&iter);
}
screen = iter.data;
if (!screen)
{
fprintf (stderr, "mcwm: Can't get the current screen. Exiting.\n");
xcb_disconnect(conn);
exit(1);
}
root = screen->root;
PDEBUG("Screen size: %dx%d\nRoot window: %d\n", screen->width_in_pixels,
screen->height_in_pixels, screen->root);
/* Get some colours. */
conf.focuscol = getcolor(focuscol);
conf.unfocuscol = getcolor(unfocuscol);
conf.fixedcol = getcolor(fixedcol);
/* Get some atoms. */
atom_desktop = getatom("_NET_WM_DESKTOP");
wm_delete_window = getatom("WM_DELETE_WINDOW");
wm_change_state = getatom("WM_CHANGE_STATE");
wm_state = getatom("WM_STATE");
wm_protocols = getatom("WM_PROTOCOLS");
/* Check for RANDR extension and configure. */
randrbase = setuprandr();
/* Loop over all clients and set up stuff. */
if (0 != setupscreen())
{
fprintf(stderr, "mcwm: Failed to initialize windows. Exiting.\n");
xcb_disconnect(conn);
exit(1);
}
/* Set up key bindings. */
if (0 != setupkeys())
{
fprintf(stderr, "mcwm: Couldn't set up keycodes. Exiting.");
xcb_disconnect(conn);
exit(1);
}
/* Grab mouse buttons. */
xcb_grab_button(conn, 0, root, XCB_EVENT_MASK_BUTTON_PRESS
| XCB_EVENT_MASK_BUTTON_RELEASE,
XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC, root, XCB_NONE,
1 /* left mouse button */,
MOUSEMODKEY);
xcb_grab_button(conn, 0, root, XCB_EVENT_MASK_BUTTON_PRESS
| XCB_EVENT_MASK_BUTTON_RELEASE,
XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC, root, XCB_NONE,
2 /* middle mouse button */,
MOUSEMODKEY);
xcb_grab_button(conn, 0, root, XCB_EVENT_MASK_BUTTON_PRESS
| XCB_EVENT_MASK_BUTTON_RELEASE,
XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC, root, XCB_NONE,
3 /* right mouse button */,
MOUSEMODKEY);
/* Subscribe to events. */
mask = XCB_CW_EVENT_MASK;
values[0] = XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT
| XCB_EVENT_MASK_STRUCTURE_NOTIFY
| XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY;
cookie =
xcb_change_window_attributes_checked(conn, root, mask, values);
error = xcb_request_check(conn, cookie);
xcb_flush(conn);
if (NULL != error)
{
fprintf(stderr, "mcwm: Can't get SUBSTRUCTURE REDIRECT. "
"Error code: %d\n"
"Another window manager running? Exiting.\n",
error->error_code);
xcb_disconnect(conn);
exit(1);
}
/* Loop over events. */
events();
/* Die gracefully. */
cleanup(sigcode);
exit(0);
}
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