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/*
* Compton - a compositor for X11
*
* Based on `xcompmgr` - Copyright (c) 2003, Keith Packard
*
* Copyright (c) 2011, Christopher Jeffrey
* See LICENSE for more information.
*
*/
#include "compton.h"
/**
* Shared
*/
const char *WINTYPES[NUM_WINTYPES] = {
"unknown",
"desktop",
"dock",
"toolbar",
"menu",
"utility",
"splash",
"dialog",
"normal",
"dropdown_menu",
"popup_menu",
"tooltip",
"notify",
"combo",
"dnd",
};
struct timeval time_start = { 0, 0 };
win *list;
Display *dpy;
int scr;
Window root;
Picture root_picture;
Picture root_buffer;
Picture black_picture;
Picture cshadow_picture;
/// Picture used for dimming inactive windows.
Picture dim_picture = 0;
Picture root_tile;
XserverRegion all_damage;
#if HAS_NAME_WINDOW_PIXMAP
Bool has_name_pixmap;
#endif
int root_height, root_width;
/* errors */
ignore *ignore_head = NULL, **ignore_tail = &ignore_head;
int xfixes_event, xfixes_error;
int damage_event, damage_error;
int composite_event, composite_error;
/// Whether X Shape extension exists.
Bool shape_exists = True;
/// Event base number and error base number for X Shape extension.
int shape_event, shape_error;
int render_event, render_error;
int composite_opcode;
/* shadows */
conv *gaussian_map;
/* for shadow precomputation */
int cgsize = -1;
unsigned char *shadow_corner = NULL;
unsigned char *shadow_top = NULL;
/* for root tile */
static const char *background_props[] = {
"_XROOTPMAP_ID",
"_XSETROOT_ID",
0,
};
/* for expose events */
XRectangle *expose_rects = 0;
int size_expose = 0;
int n_expose = 0;
// atoms
Atom extents_atom;
Atom opacity_atom;
Atom frame_extents_atom;
Atom client_atom;
Atom name_atom;
Atom name_ewmh_atom;
Atom class_atom;
Atom win_type_atom;
Atom win_type[NUM_WINTYPES];
// Window type settings
double win_type_opacity[NUM_WINTYPES];
Bool win_type_shadow[NUM_WINTYPES];
Bool win_type_fade[NUM_WINTYPES];
/**
* Macros
*/
#define HAS_FRAME_OPACITY(w) \
(frame_opacity && (w)->top_width)
/**
* Options
*/
static options_t options = {
.display = NULL,
.shadow_radius = 12,
.shadow_offset_x = -15,
.shadow_offset_y = -15,
.shadow_opacity = .75,
.fade_in_step = 0.028 * OPAQUE,
.fade_out_step = 0.03 * OPAQUE,
.fade_delta = 10,
.fade_time = 0,
.fade_trans = False,
.clear_shadow = False,
.inactive_opacity = 0,
.inactive_opacity_override = False,
.frame_opacity = 0.0,
.inactive_dim = 0.0,
.mark_wmwin_focused = False,
.track_focus = False,
.track_wdata = False,
.shadow_blacklist = NULL,
.fade_blacklist = NULL,
.fork_after_register = False,
.shadow_red = 0.0,
.shadow_green = 0.0,
.shadow_blue = 0.0,
.synchronize = False,
.shadow_enable = 0,
.fading_enable = 0,
.no_dock_shadow = False,
.no_dnd_shadow = False,
.menu_opacity = 1.0
};
/**
* Fades
*/
/**
* Get current system clock in milliseconds.
*
* The return type must be unsigned long because so many milliseconds have
* passed since the epoch.
*/
static unsigned long
get_time_in_milliseconds() {
struct timeval tv;
gettimeofday(&tv, NULL);
return tv.tv_sec * 1000 + tv.tv_usec / 1000;
}
/**
* Get the time left before next fading point.
*
* In milliseconds.
*/
static int
fade_timeout(void) {
int diff = options.fade_delta - get_time_in_milliseconds() + options.fade_time;
if (diff < 0)
diff = 0;
return diff;
}
/**
* Run fading on a window.
*
* @param steps steps of fading
*/
static void
run_fade(Display *dpy, win *w, unsigned steps) {
// If we reach target opacity, set fade_fin so the callback gets
// executed
if (w->opacity == w->opacity_tgt) {
w->fade_fin = True;
return;
}
if (!w->fade)
w->opacity = w->opacity_tgt;
else if (steps) {
// Use double below because opacity_t will probably overflow during
// calculations
if (w->opacity < w->opacity_tgt)
w->opacity = normalize_d_range(
(double) w->opacity + (double) options.fade_in_step * steps,
0.0, w->opacity_tgt);
else
w->opacity = normalize_d_range(
(double) w->opacity - (double) options.fade_out_step * steps,
w->opacity_tgt, OPAQUE);
}
if (w->opacity == w->opacity_tgt) {
w->fade_fin = True;
return;
}
w->fade_fin = False;
}
/**
* Set fade callback of a window, and possibly execute the previous
* callback.
*
* @param exec_callback whether the previous callback is to be executed
*/
static void
set_fade_callback(Display *dpy, win *w,
void (*callback) (Display *dpy, win *w), Bool exec_callback) {
void (*old_callback) (Display *dpy, win *w) = w->fade_callback;
w->fade_callback = callback;
// Must be the last line as the callback could destroy w!
if (exec_callback && old_callback)
old_callback(dpy, w);
}
/**
* Shadows
*/
static double
gaussian(double r, double x, double y) {
return ((1 / (sqrt(2 * M_PI * r))) *
exp((- (x * x + y * y)) / (2 * r * r)));
}
static conv *
make_gaussian_map(Display *dpy, double r) {
conv *c;
int size = ((int) ceil((r * 3)) + 1) & ~1;
int center = size / 2;
int x, y;
double t;
double g;
c = malloc(sizeof(conv) + size * size * sizeof(double));
c->size = size;
c->data = (double *) (c + 1);
t = 0.0;
for (y = 0; y < size; y++) {
for (x = 0; x < size; x++) {
g = gaussian(r, (double) (x - center), (double) (y - center));
t += g;
c->data[y * size + x] = g;
}
}
for (y = 0; y < size; y++) {
for (x = 0; x < size; x++) {
c->data[y * size + x] /= t;
}
}
return c;
}
/*
* A picture will help
*
* -center 0 width width+center
* -center +-----+-------------------+-----+
* | | | |
* | | | |
* 0 +-----+-------------------+-----+
* | | | |
* | | | |
* | | | |
* height +-----+-------------------+-----+
* | | | |
* height+ | | | |
* center +-----+-------------------+-----+
*/
static unsigned char
sum_gaussian(conv *map, double opacity,
int x, int y, int width, int height) {
int fx, fy;
double *g_data;
double *g_line = map->data;
int g_size = map->size;
int center = g_size / 2;
int fx_start, fx_end;
int fy_start, fy_end;
double v;
/*
* Compute set of filter values which are "in range",
* that's the set with:
* 0 <= x + (fx-center) && x + (fx-center) < width &&
* 0 <= y + (fy-center) && y + (fy-center) < height
*
* 0 <= x + (fx - center) x + fx - center < width
* center - x <= fx fx < width + center - x
*/
fx_start = center - x;
if (fx_start < 0) fx_start = 0;
fx_end = width + center - x;
if (fx_end > g_size) fx_end = g_size;
fy_start = center - y;
if (fy_start < 0) fy_start = 0;
fy_end = height + center - y;
if (fy_end > g_size) fy_end = g_size;
g_line = g_line + fy_start * g_size + fx_start;
v = 0;
for (fy = fy_start; fy < fy_end; fy++) {
g_data = g_line;
g_line += g_size;
for (fx = fx_start; fx < fx_end; fx++) {
v += *g_data++;
}
}
if (v > 1) v = 1;
return ((unsigned char) (v * opacity * 255.0));
}
/* precompute shadow corners and sides
to save time for large windows */
static void
presum_gaussian(conv *map) {
int center = map->size / 2;
int opacity, x, y;
cgsize = map->size;
if (shadow_corner) free((void *)shadow_corner);
if (shadow_top) free((void *)shadow_top);
shadow_corner = (unsigned char *)(malloc((cgsize + 1) * (cgsize + 1) * 26));
shadow_top = (unsigned char *)(malloc((cgsize + 1) * 26));
for (x = 0; x <= cgsize; x++) {
shadow_top[25 * (cgsize + 1) + x] =
sum_gaussian(map, 1, x - center, center, cgsize * 2, cgsize * 2);
for (opacity = 0; opacity < 25; opacity++) {
shadow_top[opacity * (cgsize + 1) + x] =
shadow_top[25 * (cgsize + 1) + x] * opacity / 25;
}
for (y = 0; y <= x; y++) {
shadow_corner[25 * (cgsize + 1) * (cgsize + 1) + y * (cgsize + 1) + x]
= sum_gaussian(map, 1, x - center, y - center, cgsize * 2, cgsize * 2);
shadow_corner[25 * (cgsize + 1) * (cgsize + 1) + x * (cgsize + 1) + y]
= shadow_corner[25 * (cgsize + 1) * (cgsize + 1) + y * (cgsize + 1) + x];
for (opacity = 0; opacity < 25; opacity++) {
shadow_corner[opacity * (cgsize + 1) * (cgsize + 1)
+ y * (cgsize + 1) + x]
= shadow_corner[opacity * (cgsize + 1) * (cgsize + 1)
+ x * (cgsize + 1) + y]
= shadow_corner[25 * (cgsize + 1) * (cgsize + 1)
+ y * (cgsize + 1) + x] * opacity / 25;
}
}
}
}
static XImage *
make_shadow(Display *dpy, double opacity,
int width, int height) {
XImage *ximage;
unsigned char *data;
int gsize = gaussian_map->size;
int ylimit, xlimit;
int swidth = width + gsize;
int sheight = height + gsize;
int center = gsize / 2;
int x, y;
unsigned char d;
int x_diff;
int opacity_int = (int)(opacity * 25);
data = malloc(swidth * sheight * sizeof(unsigned char));
if (!data) return 0;
ximage = XCreateImage(
dpy, DefaultVisual(dpy, DefaultScreen(dpy)), 8,
ZPixmap, 0, (char *) data, swidth, sheight, 8,
swidth * sizeof(unsigned char));
if (!ximage) {
free(data);
return 0;
}
/*
* Build the gaussian in sections
*/
/*
* center (fill the complete data array)
*/
// If options.clear_shadow is enabled and the border & corner shadow (which
// later will be filled) could entirely cover the area of the shadow
// that will be displayed, do not bother filling other pixels. If it
// can't, we must fill the other pixels here.
if (!(options.clear_shadow && options.shadow_offset_x <= 0 && options.shadow_offset_x >= -cgsize
&& options.shadow_offset_y <= 0 && options.shadow_offset_y >= -cgsize)) {
if (cgsize > 0) {
d = shadow_top[opacity_int * (cgsize + 1) + cgsize];
} else {
d = sum_gaussian(gaussian_map,
opacity, center, center, width, height);
}
memset(data, d, sheight * swidth);
}
/*
* corners
*/
ylimit = gsize;
if (ylimit > sheight / 2) ylimit = (sheight + 1) / 2;
xlimit = gsize;
if (xlimit > swidth / 2) xlimit = (swidth + 1) / 2;
for (y = 0; y < ylimit; y++) {
for (x = 0; x < xlimit; x++) {
if (xlimit == cgsize && ylimit == cgsize) {
d = shadow_corner[opacity_int * (cgsize + 1) * (cgsize + 1)
+ y * (cgsize + 1) + x];
} else {
d = sum_gaussian(gaussian_map,
opacity, x - center, y - center, width, height);
}
data[y * swidth + x] = d;
data[(sheight - y - 1) * swidth + x] = d;
data[(sheight - y - 1) * swidth + (swidth - x - 1)] = d;
data[y * swidth + (swidth - x - 1)] = d;
}
}
/*
* top/bottom
*/
x_diff = swidth - (gsize * 2);
if (x_diff > 0 && ylimit > 0) {
for (y = 0; y < ylimit; y++) {
if (ylimit == cgsize) {
d = shadow_top[opacity_int * (cgsize + 1) + y];
} else {
d = sum_gaussian(gaussian_map,
opacity, center, y - center, width, height);
}
memset(&data[y * swidth + gsize], d, x_diff);
memset(&data[(sheight - y - 1) * swidth + gsize], d, x_diff);
}
}
/*
* sides
*/
for (x = 0; x < xlimit; x++) {
if (xlimit == cgsize) {
d = shadow_top[opacity_int * (cgsize + 1) + x];
} else {
d = sum_gaussian(gaussian_map,
opacity, x - center, center, width, height);
}
for (y = gsize; y < sheight - gsize; y++) {
data[y * swidth + x] = d;
data[y * swidth + (swidth - x - 1)] = d;
}
}
if (options.clear_shadow) {
// Clear the region in the shadow that the window would cover based
// on shadow_offset_{x,y} user provides
int xstart = normalize_i_range(- (int) options.shadow_offset_x, 0, swidth);
int xrange = normalize_i_range(width - (int) options.shadow_offset_x,
0, swidth) - xstart;
int ystart = normalize_i_range(- (int) options.shadow_offset_y, 0, sheight);
int yend = normalize_i_range(height - (int) options.shadow_offset_y,
0, sheight);
int y;
for (y = ystart; y < yend; y++) {
memset(&data[y * swidth + xstart], 0, xrange);
}
}
return ximage;
}
static Picture
shadow_picture(Display *dpy, double opacity, int width, int height) {
XImage *shadow_image;
Pixmap shadow_pixmap;
Picture shadow_picture;
GC gc;
shadow_image = make_shadow(dpy, opacity, width, height);
if (!shadow_image) return None;
shadow_pixmap = XCreatePixmap(dpy, root,
shadow_image->width, shadow_image->height, 8);
if (!shadow_pixmap) {
XDestroyImage(shadow_image);
return None;
}
shadow_picture = XRenderCreatePicture(dpy, shadow_pixmap,
XRenderFindStandardFormat(dpy, PictStandardA8), 0, 0);
if (!shadow_picture) {
XDestroyImage(shadow_image);
XFreePixmap(dpy, shadow_pixmap);
return None;
}
gc = XCreateGC(dpy, shadow_pixmap, 0, 0);
if (!gc) {
XDestroyImage(shadow_image);
XFreePixmap(dpy, shadow_pixmap);
XRenderFreePicture(dpy, shadow_picture);
return None;
}
XPutImage(
dpy, shadow_pixmap, gc, shadow_image, 0, 0, 0, 0,
shadow_image->width, shadow_image->height);
XFreeGC(dpy, gc);
XDestroyImage(shadow_image);
XFreePixmap(dpy, shadow_pixmap);
return shadow_picture;
}
static Picture
solid_picture(Display *dpy, Bool argb, double a,
double r, double g, double b) {
Pixmap pixmap;
Picture picture;
XRenderPictureAttributes pa;
XRenderColor c;
pixmap = XCreatePixmap(dpy, root, 1, 1, argb ? 32 : 8);
if (!pixmap) return None;
pa.repeat = True;
picture = XRenderCreatePicture(dpy, pixmap,
XRenderFindStandardFormat(dpy, argb
? PictStandardARGB32 : PictStandardA8),
CPRepeat,
&pa);
if (!picture) {
XFreePixmap(dpy, pixmap);
return None;
}
c.alpha = a * 0xffff;
c.red = r * 0xffff;
c.green = g * 0xffff;
c.blue = b * 0xffff;
XRenderFillRectangle(dpy, PictOpSrc, picture, &c, 0, 0, 1, 1);
XFreePixmap(dpy, pixmap);
return picture;
}
/**
* Errors
*/
static void
discard_ignore(Display *dpy, unsigned long sequence) {
while (ignore_head) {
if ((long) (sequence - ignore_head->sequence) > 0) {
ignore *next = ignore_head->next;
free(ignore_head);
ignore_head = next;
if (!ignore_head) {
ignore_tail = &ignore_head;
}
} else {
break;
}
}
}
static void
set_ignore(Display *dpy, unsigned long sequence) {
ignore *i = malloc(sizeof(ignore));
if (!i) return;
i->sequence = sequence;
i->next = 0;
*ignore_tail = i;
ignore_tail = &i->next;
}
static int
should_ignore(Display *dpy, unsigned long sequence) {
discard_ignore(dpy, sequence);
return ignore_head && ignore_head->sequence == sequence;
}
/**
* Windows
*/
/**
* Match a window against a single window condition.
*
* @return true if matched, false otherwise.
*/
static bool
win_match_once(win *w, const wincond *cond) {
const char *target;
bool matched = false;
#ifdef DEBUG_WINMATCH
printf("win_match_once(%#010lx \"%s\"): cond = %p", w->id, w->name,
cond);
#endif
// Determine the target
target = NULL;
switch (cond->target) {
case CONDTGT_NAME:
target = w->name;
break;
case CONDTGT_CLASSI:
target = w->class_instance;
break;
case CONDTGT_CLASSG:
target = w->class_general;
break;
}
if (!target) {
#ifdef DEBUG_WINMATCH
printf(": Target not found\n");
#endif
return false;
}
// Determine pattern type and match
switch (cond->type) {
case CONDTP_EXACT:
if (cond->flags & CONDF_IGNORECASE)
matched = !strcasecmp(target, cond->pattern);
else
matched = !strcmp(target, cond->pattern);
break;
case CONDTP_ANYWHERE:
if (cond->flags & CONDF_IGNORECASE)
matched = strcasestr(target, cond->pattern);
else
matched = strstr(target, cond->pattern);
break;
case CONDTP_FROMSTART:
if (cond->flags & CONDF_IGNORECASE)
matched = !strncasecmp(target, cond->pattern,
strlen(cond->pattern));
else
matched = !strncmp(target, cond->pattern,
strlen(cond->pattern));
break;
case CONDTP_WILDCARD:
{
int flags = 0;
if (cond->flags & CONDF_IGNORECASE)
flags = FNM_CASEFOLD;
matched = !fnmatch(cond->pattern, target, flags);
}
break;
case CONDTP_REGEX_PCRE:
#ifdef CONFIG_REGEX_PCRE
matched = (pcre_exec(cond->regex_pcre, cond->regex_pcre_extra,
target, strlen(target), 0, 0, NULL, 0) >= 0);
#endif
break;
}
#ifdef DEBUG_WINMATCH
printf(", matched = %d\n", matched);
#endif
return matched;
}
/**
* Match a window against a condition linked list.
*
* @param cache a place to cache the last matched condition
* @return true if matched, false otherwise.
*/
static bool
win_match(win *w, wincond *condlst, wincond **cache) {
// Check if the cached entry matches firstly
if (cache && *cache && win_match_once(w, *cache))
return true;
// Then go through the whole linked list
for (; condlst; condlst = condlst->next) {
if (win_match_once(w, condlst)) {
*cache = condlst;
return true;
}
}
return false;
}
/**
* Add a pattern to a condition linked list.
*/
static Bool
condlst_add(wincond **pcondlst, const char *pattern) {
if (!pattern)
return False;
unsigned plen = strlen(pattern);
wincond *cond;
const char *pos;
if (plen < 4 || ':' != pattern[1] || !strchr(pattern + 2, ':')) {
printf("Pattern \"%s\": Format invalid.\n", pattern);
return False;
}
// Allocate memory for the new condition
cond = malloc(sizeof(wincond));
// Determine the pattern target
switch (pattern[0]) {
case 'n':
cond->target = CONDTGT_NAME;
break;
case 'i':
cond->target = CONDTGT_CLASSI;
break;
case 'g':
cond->target = CONDTGT_CLASSG;
break;
default:
printf("Pattern \"%s\": Target \"%c\" invalid.\n",
pattern, pattern[0]);
free(cond);
return False;
}
// Determine the pattern type
switch (pattern[2]) {
case 'e':
cond->type = CONDTP_EXACT;
break;
case 'a':
cond->type = CONDTP_ANYWHERE;
break;
case 's':
cond->type = CONDTP_FROMSTART;
break;
case 'w':
cond->type = CONDTP_WILDCARD;
break;
#ifdef CONFIG_REGEX_PCRE
case 'p':
cond->type = CONDTP_REGEX_PCRE;
break;
#endif
default:
printf("Pattern \"%s\": Type \"%c\" invalid.\n",
pattern, pattern[2]);
free(cond);
return False;
}
// Determine the pattern flags
pos = &pattern[3];
cond->flags = 0;
while (':' != *pos) {
switch (*pos) {
case 'i':
cond->flags |= CONDF_IGNORECASE;
break;
default:
printf("Pattern \"%s\": Flag \"%c\" invalid.\n",
pattern, *pos);
break;
}
++pos;
}
// Copy the pattern
++pos;
cond->pattern = NULL;
#ifdef CONFIG_REGEX_PCRE
cond->regex_pcre = NULL;
cond->regex_pcre_extra = NULL;
#endif
if (CONDTP_REGEX_PCRE == cond->type) {
#ifdef CONFIG_REGEX_PCRE
const char *error = NULL;
int erroffset = 0;
int options = 0;
if (cond->flags & CONDF_IGNORECASE)
options |= PCRE_CASELESS;
cond->regex_pcre = pcre_compile(pos, options, &error, &erroffset,
NULL);
if (!cond->regex_pcre) {
printf("Pattern \"%s\": PCRE regular expression parsing failed on "
"offset %d: %s\n", pattern, erroffset, error);
free(cond);
return False;
}
#ifdef CONFIG_REGEX_PCRE_JIT
cond->regex_pcre_extra = pcre_study(cond->regex_pcre, PCRE_STUDY_JIT_COMPILE, &error);
if (!cond->regex_pcre_extra) {
printf("Pattern \"%s\": PCRE regular expression study failed: %s",
pattern, error);
}
#endif
#endif
}
else {
cond->pattern = mstrcpy(pos);
}
// Insert it into the linked list
cond->next = *pcondlst;
*pcondlst = cond;
return True;
}
static long
determine_evmask(Display *dpy, Window wid, win_evmode_t mode) {
long evmask = NoEventMask;
if (WIN_EVMODE_FRAME == mode || find_win(dpy, wid)) {
evmask |= PropertyChangeMask;
if (options.track_focus) evmask |= FocusChangeMask;
}
if (WIN_EVMODE_CLIENT == mode || find_toplevel(dpy, wid)) {
if (options.frame_opacity || options.track_wdata)
evmask |= PropertyChangeMask;
}
return evmask;
}
static win *
find_win(Display *dpy, Window id) {
win *w;
for (w = list; w; w = w->next) {
if (w->id == id && !w->destroyed)
return w;
}
return 0;
}
/**
* Find out the WM frame of a client window using existing data.
*
* @param dpy display to use
* @param w window ID
* @return struct _win object of the found window, NULL if not found
*/
static win *
find_toplevel(Display *dpy, Window id) {
win *w;
for (w = list; w; w = w->next) {
if (w->client_win == id && !w->destroyed)
return w;
}
return NULL;
}
/**
* Find out the WM frame of a client window by querying X.
*
* @param dpy display to use
* @param w window ID
* @return struct _win object of the found window, NULL if not found
*/
static win *
find_toplevel2(Display *dpy, Window wid) {
win *w = NULL;
// We traverse through its ancestors to find out the frame
while (wid && wid != root && !(w = find_win(dpy, wid))) {
Window troot;
Window parent;
Window *tchildren;
unsigned tnchildren;
// XQueryTree probably fails if you run compton when X is somehow
// initializing (like add it in .xinitrc). In this case
// just leave it alone.
if (!XQueryTree(dpy, wid, &troot, &parent, &tchildren,
&tnchildren)) {
parent = 0;
break;
}
if (tchildren) XFree(tchildren);
wid = parent;
}
return w;
}
/**
* Recheck currently focused window and set its <code>w->focused</code>
* to True.
*
* @param dpy display to use
* @return struct _win of currently focused window, NULL if not found
*/
static win *
recheck_focus(Display *dpy) {
// Determine the currently focused window so we can apply appropriate
// opacity on it
Window wid = 0;
int revert_to;
win *w = NULL;
XGetInputFocus(dpy, &wid, &revert_to);
// Fallback to the old method if find_toplevel() fails
if (!(w = find_toplevel(dpy, wid))) {
w = find_toplevel2(dpy, wid);
}
// And we set the focus state and opacity here
if (w) {
set_focused(dpy, w, True);
return w;
}
return NULL;
}
static Picture
root_tile_f(Display *dpy) {
Picture picture;
Atom actual_type;
Pixmap pixmap;
int actual_format;
unsigned long nitems;
unsigned long bytes_after;
unsigned char *prop;
Bool fill;
XRenderPictureAttributes pa;
int p;
pixmap = None;
for (p = 0; background_props[p]; p++) {
prop = NULL;
if (XGetWindowProperty(dpy, root,
XInternAtom(dpy, background_props[p], False),
0, 4, False, AnyPropertyType, &actual_type,
&actual_format, &nitems, &bytes_after, &prop
) == Success
&& actual_type == XInternAtom(dpy, "PIXMAP", False)
&& actual_format == 32 && nitems == 1) {
memcpy(&pixmap, prop, 4);
XFree(prop);
fill = False;
break;
} else if (prop)
XFree(prop);
}
if (!pixmap) {
pixmap = XCreatePixmap(dpy, root, 1, 1, DefaultDepth(dpy, scr));
fill = True;
}
pa.repeat = True;
picture = XRenderCreatePicture(
dpy, pixmap, XRenderFindVisualFormat(dpy, DefaultVisual(dpy, scr)),
CPRepeat, &pa);
if (fill) {
XRenderColor c;
c.red = c.green = c.blue = 0x8080;
c.alpha = 0xffff;
XRenderFillRectangle(
dpy, PictOpSrc, picture, &c, 0, 0, 1, 1);
}
return picture;
}
static void
paint_root(Display *dpy) {
if (!root_tile) {
root_tile = root_tile_f(dpy);
}
XRenderComposite(
dpy, PictOpSrc, root_tile, None,
root_buffer, 0, 0, 0, 0, 0, 0,
root_width, root_height);
}
/**
* Get a rectangular region a window (and possibly its shadow) occupies.
*
* Note w->shadow and shadow geometry must be correct before calling this
* function.
*/
static XserverRegion
win_extents(Display *dpy, win *w) {
XRectangle r;
r.x = w->a.x;
r.y = w->a.y;
r.width = w->widthb;
r.height = w->heightb;
if (w->shadow) {
XRectangle sr;
sr.x = w->a.x + w->shadow_dx;
sr.y = w->a.y + w->shadow_dy;
sr.width = w->shadow_width;
sr.height = w->shadow_height;
if (sr.x < r.x) {
r.width = (r.x + r.width) - sr.x;
r.x = sr.x;
}
if (sr.y < r.y) {
r.height = (r.y + r.height) - sr.y;
r.y = sr.y;
}
if (sr.x + sr.width > r.x + r.width) {
r.width = sr.x + sr.width - r.x;
}
if (sr.y + sr.height > r.y + r.height) {
r.height = sr.y + sr.height - r.y;
}
}
return XFixesCreateRegion(dpy, &r, 1);
}
static XserverRegion
border_size(Display *dpy, win *w) {
XserverRegion border;
/*
* if window doesn't exist anymore, this will generate an error
* as well as not generate a region. Perhaps a better XFixes
* architecture would be to have a request that copies instead
* of creates, that way you'd just end up with an empty region
* instead of an invalid XID.
*/
border = XFixesCreateRegionFromWindow(
dpy, w->id, WindowRegionBounding);
/* translate this */
XFixesTranslateRegion(dpy, border,
w->a.x + w->a.border_width,
w->a.y + w->a.border_width);
return border;
}
static Window
find_client_win(Display *dpy, Window w) {
if (win_has_attr(dpy, w, client_atom)) {
return w;
}
Window *children;
unsigned int nchildren;
unsigned int i;
Window ret = 0;
if (!win_get_children(dpy, w, &children, &nchildren)) {
return 0;
}
for (i = 0; i < nchildren; ++i) {
if ((ret = find_client_win(dpy, children[i])))
break;
}
XFree(children);
return ret;
}
static void
get_frame_extents(Display *dpy, win *w, Window client) {
long *extents;
Atom type;
int format;
unsigned long nitems, after;
unsigned char *data = NULL;
int result;
w->left_width = 0;
w->right_width = 0;
w->top_width = 0;
w->bottom_width = 0;
result = XGetWindowProperty(
dpy, client, frame_extents_atom,
0L, 4L, False, AnyPropertyType,
&type, &format, &nitems, &after,
&data);
if (result == Success) {
if (nitems == 4 && after == 0) {
extents = (long *) data;
w->left_width = extents[0];
w->right_width = extents[1];
w->top_width = extents[2];
w->bottom_width = extents[3];
}
XFree(data);
}
}
static win *
paint_preprocess(Display *dpy, win *list) {
win *w;
win *t = NULL, *next = NULL;
// Sounds like the timeout in poll() frequently does not work
// accurately, asking it to wait to 20ms, and often it would wait for
// 19ms, so the step value has to be rounded.
unsigned steps = roundl((double) (get_time_in_milliseconds() - options.fade_time) / options.fade_delta);
// Reset options.fade_time
options.fade_time = get_time_in_milliseconds();
for (w = list; w; w = next) {
// In case calling the fade callback function destroys this window
next = w->next;
opacity_t opacity_old = w->opacity;
#if CAN_DO_USABLE
if (!w->usable) continue;
#endif
// Run fading
run_fade(dpy, w, steps);
// Give up if it's not damaged or invisible
if (!w->damaged
|| w->a.x + w->a.width < 1 || w->a.y + w->a.height < 1
|| w->a.x >= root_width || w->a.y >= root_height) {
check_fade_fin(dpy, w);
continue;
}
// If opacity changes
if (w->opacity != opacity_old) {
determine_mode(dpy, w);
add_damage_win(dpy, w);
}
if (!w->opacity) {
check_fade_fin(dpy, w);
continue;
}
// Fetch the picture and pixmap if needed
if (!w->picture) {
XRenderPictureAttributes pa;
XRenderPictFormat *format;
Drawable draw = w->id;
#if HAS_NAME_WINDOW_PIXMAP
if (has_name_pixmap && !w->pixmap) {
set_ignore(dpy, NextRequest(dpy));
w->pixmap = XCompositeNameWindowPixmap(dpy, w->id);
}
if (w->pixmap) draw = w->pixmap;
#endif
format = XRenderFindVisualFormat(dpy, w->a.visual);
pa.subwindow_mode = IncludeInferiors;
w->picture = XRenderCreatePicture(
dpy, draw, format, CPSubwindowMode, &pa);
}
// Fetch bounding region and extents if needed
if (!w->border_size) {
w->border_size = border_size(dpy, w);
}
if (!w->extents) {
w->extents = win_extents(dpy, w);
// If w->extents does not exist, the previous add_damage_win()
// call when opacity changes has no effect, so redo it here.
if (w->opacity != opacity_old)
add_damage_win(dpy, w);
}
// Rebuild alpha_pict only if necessary
if (OPAQUE != w->opacity
&& (!w->alpha_pict || w->opacity != w->opacity_cur)) {
free_picture(dpy, &w->alpha_pict);
w->alpha_pict = solid_picture(
dpy, False, get_opacity_percent(dpy, w), 0, 0, 0);
w->opacity_cur = w->opacity;
}
// Calculate options.frame_opacity
if (options.frame_opacity && 1.0 != options.frame_opacity && w->top_width)
w->frame_opacity = get_opacity_percent(dpy, w) * options.frame_opacity;
else
w->frame_opacity = 0.0;
// Rebuild frame_alpha_pict only if necessary
if (w->frame_opacity
&& (!w->frame_alpha_pict
|| w->frame_opacity != w->frame_opacity_cur)) {
free_picture(dpy, &w->frame_alpha_pict);
w->frame_alpha_pict = solid_picture(
dpy, False, w->frame_opacity, 0, 0, 0);
w->frame_opacity_cur = w->frame_opacity;
}
// Calculate shadow opacity
if (w->frame_opacity)
w->shadow_opacity = options.shadow_opacity * w->frame_opacity;
else
w->shadow_opacity = options.shadow_opacity * get_opacity_percent(dpy, w);
// Rebuild shadow_pict if necessary
if (w->flags & WFLAG_SIZE_CHANGE)
free_picture(dpy, &w->shadow_pict);
if (w->shadow
&& (!w->shadow_pict
|| w->shadow_opacity != w->shadow_opacity_cur)) {
free_picture(dpy, &w->shadow_pict);
w->shadow_pict = shadow_picture(dpy, w->shadow_opacity,
w->widthb, w->heightb);
w->shadow_opacity_cur = w->shadow_opacity;
}
// Reset flags
w->flags = 0;
w->prev_trans = t;
t = w;
}
return t;
}
static void
paint_all(Display *dpy, XserverRegion region, win *t) {
win *w;
if (!region) {
region = get_screen_region(dpy);
}
#ifdef MONITOR_REPAINT
root_buffer = root_picture;
#else
if (!root_buffer) {
Pixmap root_pixmap = XCreatePixmap(
dpy, root, root_width, root_height,
DefaultDepth(dpy, scr));
root_buffer = XRenderCreatePicture(dpy, root_pixmap,
XRenderFindVisualFormat(dpy, DefaultVisual(dpy, scr)),
0, 0);
XFreePixmap(dpy, root_pixmap);
}
#endif
XFixesSetPictureClipRegion(dpy, root_picture, 0, 0, region);
#ifdef MONITOR_REPAINT
XRenderComposite(
dpy, PictOpSrc, black_picture, None,
root_picture, 0, 0, 0, 0, 0, 0,
root_width, root_height);
#endif
paint_root(dpy);
#ifdef DEBUG_REPAINT
printf("paint:");
#endif
for (w = t; w; w = w->prev_trans) {
int x, y, wid, hei;
#if HAS_NAME_WINDOW_PIXMAP
x = w->a.x;
y = w->a.y;
wid = w->widthb;
hei = w->heightb;
#else
x = w->a.x + w->a.border_width;
y = w->a.y + w->a.border_width;
wid = w->a.width;
hei = w->a.height;
#endif
#ifdef DEBUG_REPAINT
printf(" %#010lx", w->id);
#endif
// Allow shadow to be painted anywhere in the damaged region
XFixesSetPictureClipRegion(dpy, root_buffer, 0, 0, region);
// Painting shadow
if (w->shadow) {
XRenderComposite(
dpy, PictOpOver, cshadow_picture, w->shadow_pict,
root_buffer, 0, 0, 0, 0,
w->a.x + w->shadow_dx, w->a.y + w->shadow_dy,
w->shadow_width, w->shadow_height);
}
// The window only could be painted in its bounding region
XserverRegion paint_reg = XFixesCreateRegion(dpy, NULL, 0);
XFixesIntersectRegion(dpy, paint_reg, region, w->border_size);
XFixesSetPictureClipRegion(dpy, root_buffer, 0, 0, paint_reg);
Picture alpha_mask = (OPAQUE == w->opacity ? None: w->alpha_pict);
int op = (w->mode == WINDOW_SOLID ? PictOpSrc: PictOpOver);
// Painting the window
if (!w->frame_opacity) {
XRenderComposite(dpy, op, w->picture, alpha_mask,
root_buffer, 0, 0, 0, 0, x, y, wid, hei);
}
else {
unsigned int t = w->top_width;
unsigned int l = w->left_width;
unsigned int b = w->bottom_width;
unsigned int r = w->right_width;
/* top */
XRenderComposite(
dpy, PictOpOver, w->picture, w->frame_alpha_pict, root_buffer,
0, 0, 0, 0, x, y, wid, t);
/* left */
XRenderComposite(
dpy, PictOpOver, w->picture, w->frame_alpha_pict, root_buffer,
0, t, 0, t, x, y + t, l, hei - t);
/* bottom */
XRenderComposite(
dpy, PictOpOver, w->picture, w->frame_alpha_pict, root_buffer,
l, hei - b, l, hei - b, x + l, y + hei - b, wid - l - r, b);
/* right */
XRenderComposite(
dpy, PictOpOver, w->picture, w->frame_alpha_pict, root_buffer,
wid - r, t, wid - r, t, x + wid - r, y + t, r, hei - t);
/* body */
XRenderComposite(
dpy, op, w->picture, alpha_mask, root_buffer,
l, t, l, t, x + l, y + t, wid - l - r, hei - t - b);
}
// Dimming the window if needed
if (w->dim) {
XRenderComposite(dpy, PictOpOver, dim_picture, None,
root_buffer, 0, 0, 0, 0, x, y, wid, hei);
}
XFixesDestroyRegion(dpy, paint_reg);
check_fade_fin(dpy, w);
}
#ifdef DEBUG_REPAINT
printf("\n");
fflush(stdout);
#endif
XFixesDestroyRegion(dpy, region);
if (root_buffer != root_picture) {
XFixesSetPictureClipRegion(dpy, root_buffer, 0, 0, None);
XRenderComposite(
dpy, PictOpSrc, root_buffer, None,
root_picture, 0, 0, 0, 0,
0, 0, root_width, root_height);
}
}
static void
add_damage(Display *dpy, XserverRegion damage) {
if (all_damage) {
XFixesUnionRegion(dpy, all_damage, all_damage, damage);
XFixesDestroyRegion(dpy, damage);
} else {
all_damage = damage;
}
}
static void
repair_win(Display *dpy, win *w) {
XserverRegion parts;
if (!w->damaged) {
parts = win_extents(dpy, w);
set_ignore(dpy, NextRequest(dpy));
XDamageSubtract(dpy, w->damage, None, None);
} else {
parts = XFixesCreateRegion(dpy, 0, 0);
set_ignore(dpy, NextRequest(dpy));
XDamageSubtract(dpy, w->damage, None, parts);
XFixesTranslateRegion(dpy, parts,
w->a.x + w->a.border_width,
w->a.y + w->a.border_width);
}
add_damage(dpy, parts);
w->damaged = 1;
}
static wintype
get_wintype_prop(Display *dpy, Window wid) {
Atom actual;
int format;
unsigned long n = 0, left, i;
long *data = NULL;
int j;
set_ignore(dpy, NextRequest(dpy));
if (Success != XGetWindowProperty(
dpy, wid, win_type_atom, 0L, 32L, False, XA_ATOM,
&actual, &format, &n, &left, (unsigned char **) &data)
|| !data || !n) {
if (data)
XFree(data);
return WINTYPE_UNKNOWN;
}
for (i = 0; i < n; ++i) {
for (j = 1; j < NUM_WINTYPES; ++j) {
if (win_type[j] == (Atom) data[i]) {
XFree(data);
return j;
}
}
}
XFree(data);
return WINTYPE_UNKNOWN;
}
static wintype
determine_wintype(Display *dpy, Window w) {
Window *children = NULL;
unsigned int nchildren, i;
wintype type;
type = get_wintype_prop(dpy, w);
if (type != WINTYPE_UNKNOWN) return type;
if (!win_get_children(dpy, w, &children, &nchildren))
return WINTYPE_UNKNOWN;
for (i = 0; i < nchildren; i++) {
type = determine_wintype(dpy, children[i]);
if (type != WINTYPE_UNKNOWN) return type;
}
if (children) {
XFree((void *)children);
}
return WINTYPE_UNKNOWN;
}
static void
map_win(Display *dpy, Window id,
unsigned long sequence, Bool fade,
Bool override_redirect) {
win *w = find_win(dpy, id);
if (!w) return;
w->focused = False;
w->a.map_state = IsViewable;
// Call XSelectInput() before reading properties so that no property
// changes are lost
XSelectInput(dpy, id, determine_evmask(dpy, id, WIN_EVMODE_FRAME));
// Notify compton when the shape of a window changes
if (shape_exists) {
XShapeSelectInput(dpy, id, ShapeNotifyMask);
}
// Detect client window here instead of in add_win() as the client
// window should have been prepared at this point
if (!w->client_win) {
Window cw = find_client_win(dpy, w->id);
#ifdef DEBUG_CLIENTWIN
printf("find_client_win(%#010lx): client %#010lx\n", w->id, cw);
#endif
if (cw) {
mark_client_win(dpy, w, cw);
}
}
else if (options.frame_opacity) {
// Refetch frame extents just in case it changes when the window is
// unmapped
get_frame_extents(dpy, w, w->client_win);
}
if (WINTYPE_UNKNOWN == w->window_type)
w->window_type = determine_wintype(dpy, w->id);
#ifdef DEBUG_WINTYPE
printf("map_win(%#010lx): type %s\n",
w->id, WINTYPES[w->window_type]);
#endif
// Get window name and class if we are tracking them
if (options.track_wdata) {
win_get_name(dpy, w);
win_get_class(dpy, w);
}
/*
* Occasionally compton does not seem able to get a FocusIn event from a
* window just mapped. I suspect it's a timing issue again when the
* XSelectInput() is called too late. We have to recheck the focused
* window here.
*/
if (options.track_focus) {
recheck_focus(dpy);
// Consider a window without client window a WM window and mark it
// focused if options.mark_wmwin_focused is on
if (options.mark_wmwin_focused && !w->client_win)
w->focused = True;
}
// Window type change could affect shadow and fade
determine_shadow(dpy, w);
determine_fade(dpy, w);
// Determine mode here just in case the colormap changes
determine_mode(dpy, w);
// Fading in
calc_opacity(dpy, w, True);
set_fade_callback(dpy, w, NULL, True);
calc_dim(dpy, w);
#if CAN_DO_USABLE
w->damage_bounds.x = w->damage_bounds.y = 0;
w->damage_bounds.width = w->damage_bounds.height = 0;
#endif
w->damaged = 1;
/* if any configure events happened while
the window was unmapped, then configure
the window to its correct place */
if (w->need_configure) {
configure_win(dpy, &w->queue_configure);
}
}
static void
finish_unmap_win(Display *dpy, win *w) {
w->damaged = 0;
#if CAN_DO_USABLE
w->usable = False;
#endif
if (w->extents != None) {
/* destroys region */
add_damage(dpy, w->extents);
w->extents = None;
}
#if HAS_NAME_WINDOW_PIXMAP
free_pixmap(dpy, &w->pixmap);
#endif
free_picture(dpy, &w->picture);
free_region(dpy, &w->border_size);
free_picture(dpy, &w->shadow_pict);
}
static void
unmap_callback(Display *dpy, win *w) {
finish_unmap_win(dpy, w);
}
static void
unmap_win(Display *dpy, Window id, Bool fade) {
win *w = find_win(dpy, id);
if (!w) return;
w->a.map_state = IsUnmapped;
// Fading out
w->opacity_tgt = 0;
set_fade_callback(dpy, w, unmap_callback, False);
// don't care about properties anymore
// Will get BadWindow if the window is destroyed
set_ignore(dpy, NextRequest(dpy));
XSelectInput(dpy, w->id, 0);
if (w->client_win) {
set_ignore(dpy, NextRequest(dpy));
XSelectInput(dpy, w->client_win, 0);
}
}
static opacity_t
get_opacity_prop(Display *dpy, win *w, opacity_t def) {
Atom actual;
int format;
unsigned long n, left;
unsigned char *data;
int result = XGetWindowProperty(
dpy, w->id, opacity_atom, 0L, 1L, False,
XA_CARDINAL, &actual, &format, &n, &left, &data);
if (result == Success && data != NULL) {
opacity_t i = *((opacity_t *) data);
XFree(data);
return i;
}
return def;
}
static double
get_opacity_percent(Display *dpy, win *w) {
return ((double) w->opacity) / OPAQUE;
}
static void
determine_mode(Display *dpy, win *w) {
int mode;
XRenderPictFormat *format;
/* if trans prop == -1 fall back on previous tests */
if (w->a.class == InputOnly) {
format = 0;
} else {
format = XRenderFindVisualFormat(dpy, w->a.visual);
}
if (format && format->type == PictTypeDirect
&& format->direct.alphaMask) {
mode = WINDOW_ARGB;
} else if (w->opacity != OPAQUE) {
mode = WINDOW_TRANS;
} else {
mode = WINDOW_SOLID;
}
w->mode = mode;
}
/**
* Calculate and set the opacity of a window.
*
* If window is inactive and options.inactive_opacity_override is set, the
* priority is: (Simulates the old behavior)
*
* options.inactive_opacity > _NET_WM_WINDOW_OPACITY (if not opaque)
* > window type default opacity
*
* Otherwise:
*
* _NET_WM_WINDOW_OPACITY (if not opaque)
* > window type default opacity (if not opaque)
* > options.inactive_opacity
*
* @param dpy X display to use
* @param w struct _win object representing the window
* @param refetch_prop whether _NET_WM_OPACITY of the window needs to be
* refetched
*/
static void
calc_opacity(Display *dpy, win *w, Bool refetch_prop) {
opacity_t opacity;
// Do nothing for unmapped window, calc_opacity() will be called
// when it's mapped
// I suppose I need not to check for IsUnviewable here?
if (IsViewable != w->a.map_state) return;
// Do not refetch the opacity window attribute unless necessary, this
// is probably an expensive operation in some cases
if (refetch_prop) {
w->opacity_prop = get_opacity_prop(dpy, w, OPAQUE);
}
if (OPAQUE == (opacity = w->opacity_prop)) {
if (1.0 != win_type_opacity[w->window_type]) {
opacity = win_type_opacity[w->window_type] * OPAQUE;
}
}
// Respect options.inactive_opacity in some cases
if (options.inactive_opacity && is_normal_win(w) && False == w->focused
&& (OPAQUE == opacity || options.inactive_opacity_override)) {
opacity = options.inactive_opacity;
}
w->opacity_tgt = opacity;
}
static void
calc_dim(Display *dpy, win *w) {
Bool dim;
if (options.inactive_dim && is_normal_win(w) && !(w->focused)) {
dim = True;
} else {
dim = False;
}
if (dim != w->dim) {
w->dim = dim;
add_damage_win(dpy, w);
}
}
/**
* Determine if a window should fade on opacity change.
*/
static void
determine_fade(Display *dpy, win *w) {
w->fade = win_type_fade[w->window_type];
}
/**
* Determine if a window should have shadow, and update things depending
* on shadow state.
*/
static void
determine_shadow(Display *dpy, win *w) {
Bool shadow_old = w->shadow;
w->shadow = (win_type_shadow[w->window_type]
&& !win_match(w, options.shadow_blacklist, &w->cache_sblst));
// Window extents need update on shadow state change
if (w->shadow != shadow_old) {
// Shadow geometry currently doesn't change on shadow state change
// calc_shadow_geometry(dpy, w);
if (w->extents) {
// Mark the old extents as damaged if the shadow is removed
if (!w->shadow)
add_damage(dpy, w->extents);
else
free_region(dpy, &w->extents);
w->extents = win_extents(dpy, w);
// Mark the new extents as damaged if the shadow is added
if (w->shadow)
add_damage_win(dpy, w);
}
}
}
/**
* Update cache data in struct _win that depends on window size.
*/
static void
calc_win_size(Display *dpy, win *w) {
w->widthb = w->a.width + w->a.border_width * 2;
w->heightb = w->a.height + w->a.border_width * 2;
calc_shadow_geometry(dpy, w);
w->flags |= WFLAG_SIZE_CHANGE;
}
/**
* Calculate and update geometry of the shadow of a window.
*/
static void
calc_shadow_geometry(Display *dpy, win *w) {
w->shadow_dx = options.shadow_offset_x;
w->shadow_dy = options.shadow_offset_y;
w->shadow_width = w->widthb + gaussian_map->size;
w->shadow_height = w->heightb + gaussian_map->size;
}
/**
* Mark a window as the client window of another.
*
* @param dpy display to use
* @param w struct _win of the parent window
* @param client window ID of the client window
*/
static void
mark_client_win(Display *dpy, win *w, Window client) {
w->client_win = client;
// Get the frame width and monitor further frame width changes on client
// window if necessary
if (options.frame_opacity) {
get_frame_extents(dpy, w, client);
}
XSelectInput(dpy, client, determine_evmask(dpy, client, WIN_EVMODE_CLIENT));
if (WINTYPE_UNKNOWN == w->window_type)
w->window_type = get_wintype_prop(dpy, w->client_win);
}
static void
add_win(Display *dpy, Window id, Window prev, Bool override_redirect) {
if (find_win(dpy, id)) {
return;
}
win *new = malloc(sizeof(win));
win **p;
if (!new) return;
if (prev) {
for (p = &list; *p; p = &(*p)->next) {
if ((*p)->id == prev && !(*p)->destroyed)
break;
}
} else {
p = &list;
}
new->id = id;
set_ignore(dpy, NextRequest(dpy));
if (!XGetWindowAttributes(dpy, id, &new->a)) {
free(new);
return;
}
new->damaged = 0;
#if CAN_DO_USABLE
new->usable = False;
#endif
#if HAS_NAME_WINDOW_PIXMAP
new->pixmap = None;
#endif
new->picture = None;
if (new->a.class == InputOnly) {
new->damage_sequence = 0;
new->damage = None;
} else {
new->damage_sequence = NextRequest(dpy);
set_ignore(dpy, NextRequest(dpy));
new->damage = XDamageCreate(dpy, id, XDamageReportNonEmpty);
}
new->name = NULL;
new->class_instance = NULL;
new->class_general = NULL;
new->cache_sblst = NULL;
new->cache_fblst = NULL;
new->border_size = None;
new->extents = None;
new->shadow = False;
new->shadow_opacity = 0.0;
new->shadow_opacity_cur = 0.0;
new->shadow_pict = None;
new->shadow_dx = 0;
new->shadow_dy = 0;
new->shadow_width = 0;
new->shadow_height = 0;
new->opacity = 0;
new->opacity_tgt = 0;
new->opacity_cur = OPAQUE;
new->opacity_prop = OPAQUE;
new->fade = False;
new->fade_callback = NULL;
new->fade_fin = False;
new->alpha_pict = None;
new->frame_opacity = 1.0;
new->frame_opacity_cur = 1.0;
new->frame_alpha_pict = None;
new->dim = False;
new->focused = False;
new->destroyed = False;
new->need_configure = False;
new->window_type = WINTYPE_UNKNOWN;
new->prev_trans = 0;
new->left_width = 0;
new->right_width = 0;
new->top_width = 0;
new->bottom_width = 0;
new->client_win = 0;
new->flags = 0;
calc_win_size(dpy, new);
new->next = *p;
*p = new;
if (new->a.map_state == IsViewable) {
map_win(dpy, id, new->damage_sequence - 1, True, override_redirect);
}
}
static void
restack_win(Display *dpy, win *w, Window new_above) {
Window old_above;
if (w->next) {
old_above = w->next->id;
} else {
old_above = None;
}
if (old_above != new_above) {
win **prev;
/* unhook */
for (prev = &list; *prev; prev = &(*prev)->next) {
if ((*prev) == w) break;
}
*prev = w->next;
/* rehook */
for (prev = &list; *prev; prev = &(*prev)->next) {
if ((*prev)->id == new_above && !(*prev)->destroyed)
break;
}
w->next = *prev;
*prev = w;
#ifdef DEBUG_RESTACK
{
const char *desc;
char *window_name;
Bool to_free;
win* c = list;
printf("restack_win(%#010lx, %#010lx): "
"Window stack modified. Current stack:\n", w->id, new_above);
for (; c; c = c->next) {
window_name = "(Failed to get title)";
if (root == c->id) {
window_name = "(Root window)";
} else {
to_free = wid_get_name(dpy, c->id, &window_name);
}
desc = "";
if (c->destroyed) desc = "(D) ";
printf("%#010lx \"%s\" %s-> ", c->id, window_name, desc);
if (to_free) {
XFree(window_name);
window_name = NULL;
}
}
fputs("\n", stdout);
}
#endif
}
}
static void
configure_win(Display *dpy, XConfigureEvent *ce) {
win *w = find_win(dpy, ce->window);
XserverRegion damage = None;
if (!w) {
if (ce->window == root) {
if (root_buffer) {
XRenderFreePicture(dpy, root_buffer);
root_buffer = None;
}
root_width = ce->width;
root_height = ce->height;
}
return;
}
if (w->a.map_state == IsUnmapped) {
/* save the configure event for when the window maps */
w->need_configure = True;
w->queue_configure = *ce;
restack_win(dpy, w, ce->above);
} else {
if (!(w->need_configure)) {
restack_win(dpy, w, ce->above);
}
w->need_configure = False;
#if CAN_DO_USABLE
if (w->usable)
#endif
{
damage = XFixesCreateRegion(dpy, 0, 0);
if (w->extents != None) {
XFixesCopyRegion(dpy, damage, w->extents);
}
}
w->a.x = ce->x;
w->a.y = ce->y;
if (w->a.width != ce->width || w->a.height != ce->height) {
#if HAS_NAME_WINDOW_PIXMAP
free_pixmap(dpy, &w->pixmap);
free_picture(dpy, &w->picture);
#endif
}
if (w->a.width != ce->width || w->a.height != ce->height
|| w->a.border_width != ce->border_width) {
w->a.width = ce->width;
w->a.height = ce->height;
w->a.border_width = ce->border_width;
calc_win_size(dpy, w);
}
if (w->a.map_state != IsUnmapped && damage) {
XserverRegion extents = win_extents(dpy, w);
XFixesUnionRegion(dpy, damage, damage, extents);
XFixesDestroyRegion(dpy, extents);
add_damage(dpy, damage);
}
// Window extents and border_size may have changed
free_region(dpy, &w->extents);
free_region(dpy, &w->border_size);
}
w->a.override_redirect = ce->override_redirect;
}
static void
circulate_win(Display *dpy, XCirculateEvent *ce) {
win *w = find_win(dpy, ce->window);
Window new_above;
if (!w) return;
if (ce->place == PlaceOnTop) {
new_above = list->id;
} else {
new_above = None;
}
restack_win(dpy, w, new_above);
}
static void
finish_destroy_win(Display *dpy, Window id) {
win **prev, *w;
for (prev = &list; (w = *prev); prev = &w->next) {
if (w->id == id && w->destroyed) {
finish_unmap_win(dpy, w);
*prev = w->next;
free_picture(dpy, &w->alpha_pict);
free_picture(dpy, &w->frame_alpha_pict);
free_picture(dpy, &w->shadow_pict);
free_damage(dpy, &w->damage);
free(w->name);
free(w->class_instance);
free(w->class_general);
free(w);
break;
}
}
}
#if HAS_NAME_WINDOW_PIXMAP
static void
destroy_callback(Display *dpy, win *w) {
finish_destroy_win(dpy, w->id);
}
#endif
static void
destroy_win(Display *dpy, Window id, Bool fade) {
win *w = find_win(dpy, id);
if (w) {
w->destroyed = True;
// Fading out the window
w->opacity_tgt = 0;
set_fade_callback(dpy, w, destroy_callback, False);
}
}
static void
damage_win(Display *dpy, XDamageNotifyEvent *de) {
win *w = find_win(dpy, de->drawable);
if (!w) return;
#if CAN_DO_USABLE
if (!w->usable) {
if (w->damage_bounds.width == 0 || w->damage_bounds.height == 0) {
w->damage_bounds = de->area;
} else {
if (de->area.x < w->damage_bounds.x) {
w->damage_bounds.width += (w->damage_bounds.x - de->area.x);
w->damage_bounds.x = de->area.x;
}
if (de->area.y < w->damage_bounds.y) {
w->damage_bounds.height += (w->damage_bounds.y - de->area.y);
w->damage_bounds.y = de->area.y;
}
if (de->area.x + de->area.width
> w->damage_bounds.x + w->damage_bounds.width) {
w->damage_bounds.width =
de->area.x + de->area.width - w->damage_bounds.x;
}
if (de->area.y + de->area.height
> w->damage_bounds.y + w->damage_bounds.height) {
w->damage_bounds.height =
de->area.y + de->area.height - w->damage_bounds.y;
}
}
if (w->damage_bounds.x <= 0
&& w->damage_bounds.y <= 0
&& w->a.width <= w->damage_bounds.x + w->damage_bounds.width
&& w->a.height <= w->damage_bounds.y + w->damage_bounds.height) {
if (win_type_fade[w->window_type]) {
set_fade(dpy, w, 0, get_opacity_percent(dpy, w),
options.fade_in_step, 0, True, True);
}
w->usable = True;
}
}
if (w->usable)
#endif
repair_win(dpy, w);
}
static int
error(Display *dpy, XErrorEvent *ev) {
int o;
const char *name = "Unknown";
if (should_ignore(dpy, ev->serial)) {
return 0;
}
if (ev->request_code == composite_opcode
&& ev->minor_code == X_CompositeRedirectSubwindows) {
fprintf(stderr, "Another composite manager is already running\n");
exit(1);
}
o = ev->error_code - xfixes_error;
switch (o) {
case BadRegion:
name = "BadRegion";
break;
default:
break;
}
o = ev->error_code - damage_error;
switch (o) {
case BadDamage:
name = "BadDamage";
break;
default:
break;
}
o = ev->error_code - render_error;
switch (o) {
case BadPictFormat:
name = "BadPictFormat";
break;
case BadPicture:
name = "BadPicture";
break;
case BadPictOp:
name = "BadPictOp";
break;
case BadGlyphSet:
name = "BadGlyphSet";
break;
case BadGlyph:
name = "BadGlyph";
break;
default:
break;
}
switch (ev->error_code) {
case BadAccess:
name = "BadAccess";
break;
case BadAlloc:
name = "BadAlloc";
break;
case BadAtom:
name = "BadAtom";
break;
case BadColor:
name = "BadColor";
break;
case BadCursor:
name = "BadCursor";
break;
case BadDrawable:
name = "BadDrawable";
break;
case BadFont:
name = "BadFont";
break;
case BadGC:
name = "BadGC";
break;
case BadIDChoice:
name = "BadIDChoice";
break;
case BadImplementation:
name = "BadImplementation";
break;
case BadLength:
name = "BadLength";
break;
case BadMatch:
name = "BadMatch";
break;
case BadName:
name = "BadName";
break;
case BadPixmap:
name = "BadPixmap";
break;
case BadRequest:
name = "BadRequest";
break;
case BadValue:
name = "BadValue";
break;
case BadWindow:
name = "BadWindow";
break;
}
print_timestamp();
printf("error %d (%s) request %d minor %d serial %lu\n",
ev->error_code, name, ev->request_code,
ev->minor_code, ev->serial);
return 0;
}
static void
expose_root(Display *dpy, Window root, XRectangle *rects, int nrects) {
XserverRegion region = XFixesCreateRegion(dpy, rects, nrects);
add_damage(dpy, region);
}
static Bool
wid_get_text_prop(Display *dpy, Window wid, Atom prop,
char ***pstrlst, int *pnstr) {
XTextProperty text_prop;
if (!(XGetTextProperty(dpy, wid, &text_prop, prop) && text_prop.value))
return False;
if (Success !=
XmbTextPropertyToTextList(dpy, &text_prop, pstrlst, pnstr)
|| !*pnstr) {
*pnstr = 0;
if (*pstrlst)
XFreeStringList(*pstrlst);
return False;
}
return True;
}
static Bool
wid_get_name(Display *dpy, Window wid, char **name) {
XTextProperty text_prop;
char **strlst = NULL;
int nstr = 0;
// set_ignore(dpy, NextRequest(dpy));
if (!(XGetTextProperty(dpy, wid, &text_prop, name_ewmh_atom)
&& text_prop.value)) {
// set_ignore(dpy, NextRequest(dpy));
#ifdef DEBUG_WINDATA
printf("wid_get_name(%#010lx): _NET_WM_NAME unset, falling back to WM_NAME.\n", wid);
#endif
if (!(XGetWMName(dpy, wid, &text_prop) && text_prop.value)) {
return False;
}
}
if (Success !=
XmbTextPropertyToTextList(dpy, &text_prop, &strlst, &nstr)
|| !nstr || !strlst) {
if (strlst)
XFreeStringList(strlst);
return False;
}
*name = mstrcpy(strlst[0]);
XFreeStringList(strlst);
return True;
}
static int
win_get_name(Display *dpy, win *w) {
Bool ret;
char *name_old = w->name;
// Can't do anything if there's no client window
if (!w->client_win)
return False;
// Get the name
ret = wid_get_name(dpy, w->client_win, &w->name);
// Return -1 if wid_get_name() failed, 0 if name didn't change, 1 if
// it changes
if (!ret)
ret = -1;
else if (name_old && !strcmp(w->name, name_old))
ret = 0;
else
ret = 1;
// Keep the old name if there's no new one
if (w->name != name_old)
free(name_old);
#ifdef DEBUG_WINDATA
printf("win_get_name(%#010lx): client = %#010lx, name = \"%s\", "
"ret = %d\n", w->id, w->client_win, w->name, ret);
#endif
return ret;
}
static Bool
win_get_class(Display *dpy, win *w) {
char **strlst = NULL;
int nstr = 0;
// Can't do anything if there's no client window
if (!w->client_win)
return False;
// Free and reset old strings
free(w->class_instance);
free(w->class_general);
w->class_instance = NULL;
w->class_general = NULL;
// Retrieve the property string list
if (!wid_get_text_prop(dpy, w->client_win, class_atom, &strlst, &nstr))
return False;
// Copy the strings if successful
w->class_instance = mstrcpy(strlst[0]);
if (nstr > 1)
w->class_general = mstrcpy(strlst[1]);
XFreeStringList(strlst);
#ifdef DEBUG_WINDATA
printf("win_get_class(%#010lx): client = %#010lx, "
"instance = \"%s\", general = \"%s\"\n",
w->id, w->client_win, w->class_instance, w->class_general);
#endif
return True;
}
#ifdef DEBUG_EVENTS
static int
ev_serial(XEvent *ev) {
if ((ev->type & 0x7f) != KeymapNotify) {
return ev->xany.serial;
}
return NextRequest(ev->xany.display);
}
static char *
ev_name(XEvent *ev) {
static char buf[128];
switch (ev->type & 0x7f) {
case FocusIn:
return "FocusIn";
case FocusOut:
return "FocusOut";
case CreateNotify:
return "CreateNotify";
case ConfigureNotify:
return "ConfigureNotify";
case DestroyNotify:
return "DestroyNotify";
case MapNotify:
return "Map";
case UnmapNotify:
return "Unmap";
case ReparentNotify:
return "Reparent";
case CirculateNotify:
return "Circulate";
case Expose:
return "Expose";
case PropertyNotify:
return "PropertyNotify";
case ClientMessage:
return "ClientMessage";
default:
if (ev->type == damage_event + XDamageNotify) {
return "Damage";
}
if (shape_exists && ev->type == shape_event) {
return "ShapeNotify";
}
sprintf(buf, "Event %d", ev->type);
return buf;
}
}
static Window
ev_window(XEvent *ev) {
switch (ev->type) {
case FocusIn:
case FocusOut:
return ev->xfocus.window;
case CreateNotify:
return ev->xcreatewindow.window;
case ConfigureNotify:
return ev->xconfigure.window;
case DestroyNotify:
return ev->xdestroywindow.window;
case MapNotify:
return ev->xmap.window;
case UnmapNotify:
return ev->xunmap.window;
case ReparentNotify:
return ev->xreparent.window;
case CirculateNotify:
return ev->xcirculate.window;
case Expose:
return ev->xexpose.window;
case PropertyNotify:
return ev->xproperty.window;
case ClientMessage:
return ev->xclient.window;
default:
if (ev->type == damage_event + XDamageNotify) {
return ((XDamageNotifyEvent *)ev)->drawable;
}
if (shape_exists && ev->type == shape_event) {
return ((XShapeEvent *) ev)->window;
}
return 0;
}
}
#endif
/**
* Events
*/
inline static void
ev_focus_in(XFocusChangeEvent *ev) {
win *w = find_win(dpy, ev->window);
// To deal with events sent from windows just destroyed
if (!w) return;
set_focused(dpy, w, True);
}
inline static void
ev_focus_out(XFocusChangeEvent *ev) {
if (ev->mode == NotifyGrab
|| (ev->mode == NotifyNormal
&& (ev->detail == NotifyNonlinear
|| ev->detail == NotifyNonlinearVirtual))) {
;
} else {
return;
}
win *w = find_win(dpy, ev->window);
// To deal with events sent from windows just destroyed
if (!w) return;
set_focused(dpy, w, False);
}
inline static void
ev_create_notify(XCreateWindowEvent *ev) {
add_win(dpy, ev->window, 0, ev->override_redirect);
}
inline static void
ev_configure_notify(XConfigureEvent *ev) {
#ifdef DEBUG_EVENTS
printf("{ send_event: %d, "
" above: %#010lx, "
" override_redirect: %d }\n",
ev->send_event, ev->above, ev->override_redirect);
#endif
configure_win(dpy, ev);
}
inline static void
ev_destroy_notify(XDestroyWindowEvent *ev) {
destroy_win(dpy, ev->window, True);
}
inline static void
ev_map_notify(XMapEvent *ev) {
map_win(dpy, ev->window, ev->serial, True, ev->override_redirect);
}
inline static void
ev_unmap_notify(XUnmapEvent *ev) {
unmap_win(dpy, ev->window, True);
}
inline static void
ev_reparent_notify(XReparentEvent *ev) {
if (ev->parent == root) {
add_win(dpy, ev->window, 0, ev->override_redirect);
} else {
destroy_win(dpy, ev->window, True);
// Reset event mask in case something wrong happens
XSelectInput(dpy, ev->window,
determine_evmask(dpy, ev->window, WIN_EVMODE_UNKNOWN));
/*
// Check if the window is a client window of another
win *w_top = find_toplevel2(dpy, ev->window);
if (w_top && !(w_top->client_win)) {
mark_client_win(dpy, w_top, ev->window);
} */
}
}
inline static void
ev_circulate_notify(XCirculateEvent *ev) {
circulate_win(dpy, ev);
}
inline static void
ev_expose(XExposeEvent *ev) {
if (ev->window == root) {
int more = ev->count + 1;
if (n_expose == size_expose) {
if (expose_rects) {
expose_rects = realloc(expose_rects,
(size_expose + more) * sizeof(XRectangle));
size_expose += more;
} else {
expose_rects = malloc(more * sizeof(XRectangle));
size_expose = more;
}
}
expose_rects[n_expose].x = ev->x;
expose_rects[n_expose].y = ev->y;
expose_rects[n_expose].width = ev->width;
expose_rects[n_expose].height = ev->height;
n_expose++;
if (ev->count == 0) {
expose_root(dpy, root, expose_rects, n_expose);
n_expose = 0;
}
}
}
inline static void
ev_property_notify(XPropertyEvent *ev) {
int p;
for (p = 0; background_props[p]; p++) {
if (ev->atom == XInternAtom(dpy, background_props[p], False)) {
if (root_tile) {
XClearArea(dpy, root, 0, 0, 0, 0, True);
XRenderFreePicture(dpy, root_tile);
root_tile = None;
break;
}
}
}
/* check if Trans property was changed */
if (ev->atom == opacity_atom) {
/* reset mode and redraw window */
win *w = find_win(dpy, ev->window);
if (w) {
calc_opacity(dpy, w, True);
}
}
// If frame extents property changes
if (options.frame_opacity && ev->atom == extents_atom) {
win *w = find_toplevel(dpy, ev->window);
if (w) {
get_frame_extents(dpy, w, ev->window);
// If frame extents change, the window needs repaint
add_damage_win(dpy, w);
}
}
// If name changes
if (options.track_wdata
&& (name_atom == ev->atom || name_ewmh_atom == ev->atom)) {
win *w = find_toplevel(dpy, ev->window);
if (w && 1 == win_get_name(dpy, w))
determine_shadow(dpy, w);
}
// If class changes
if (options.track_wdata && class_atom == ev->atom) {
win *w = find_toplevel(dpy, ev->window);
if (w) {
win_get_class(dpy, w);
determine_shadow(dpy, w);
}
}
}
inline static void
ev_damage_notify(XDamageNotifyEvent *ev) {
damage_win(dpy, ev);
}
inline static void
ev_shape_notify(XShapeEvent *ev) {
win *w = find_win(dpy, ev->window);
if (!w) return;
/*
* Empty border_size may indicated an
* unmapped/destroyed window, in which case
* seemingly BadRegion errors would be triggered
* if we attempt to rebuild border_size
*/
if (w->border_size) {
// Mark the old border_size as damaged
add_damage(dpy, w->border_size);
w->border_size = border_size(dpy, w);
// Mark the new border_size as damaged
add_damage(dpy, copy_region(dpy, w->border_size));
}
}
inline static void
ev_handle(XEvent *ev) {
if ((ev->type & 0x7f) != KeymapNotify) {
discard_ignore(dpy, ev->xany.serial);
}
#ifdef DEBUG_EVENTS
if (ev->type != damage_event + XDamageNotify) {
Window w;
char *window_name;
Bool to_free = False;
w = ev_window(ev);
window_name = "(Failed to get title)";
if (w) {
if (root == w) {
window_name = "(Root window)";
} else {
to_free = (Bool) wid_get_name(dpy, w, &window_name);
}
}
print_timestamp();
printf("event %10.10s serial %#010x window %#010lx \"%s\"\n",
ev_name(ev), ev_serial(ev), w, window_name);
if (to_free) {
XFree(window_name);
window_name = NULL;
}
}
#endif
switch (ev->type) {
case FocusIn:
ev_focus_in((XFocusChangeEvent *)ev);
break;
case FocusOut:
ev_focus_out((XFocusChangeEvent *)ev);
break;
case CreateNotify:
ev_create_notify((XCreateWindowEvent *)ev);
break;
case ConfigureNotify:
ev_configure_notify((XConfigureEvent *)ev);
break;
case DestroyNotify:
ev_destroy_notify((XDestroyWindowEvent *)ev);
break;
case MapNotify:
ev_map_notify((XMapEvent *)ev);
break;
case UnmapNotify:
ev_unmap_notify((XUnmapEvent *)ev);
break;
case ReparentNotify:
ev_reparent_notify((XReparentEvent *)ev);
break;
case CirculateNotify:
ev_circulate_notify((XCirculateEvent *)ev);
break;
case Expose:
ev_expose((XExposeEvent *)ev);
break;
case PropertyNotify:
ev_property_notify((XPropertyEvent *)ev);
break;
default:
if (shape_exists && ev->type == shape_event) {
ev_shape_notify((XShapeEvent *) ev);
break;
}
if (ev->type == damage_event + XDamageNotify) {
ev_damage_notify((XDamageNotifyEvent *)ev);
}
break;
}
}
/**
* Main
*/
static void
usage(void) {
fprintf(stderr, "compton (development version)\n");
fprintf(stderr, "usage: compton [options]\n");
fprintf(stderr,
"Options:\n"
"\n"
"-d display\n"
" Which display should be managed.\n"
"-r radius\n"
" The blur radius for shadows. (default 12)\n"
"-o opacity\n"
" The translucency for shadows. (default .75)\n"
"-l left-offset\n"
" The left offset for shadows. (default -15)\n"
"-t top-offset\n"
" The top offset for shadows. (default -15)\n"
"-I fade-in-step\n"
" Opacity change between steps while fading in. (default 0.028)\n"
"-O fade-out-step\n"
" Opacity change between steps while fading out. (default 0.03)\n"
"-D fade-delta-time\n"
" The time between steps in a fade in milliseconds. (default 10)\n"
"-m opacity\n"
" The opacity for menus. (default 1.0)\n"
"-c\n"
" Enabled client-side shadows on windows.\n"
"-C\n"
" Avoid drawing shadows on dock/panel windows.\n"
"-z\n"
" Zero the part of the shadow's mask behind the window (experimental).\n"
"-f\n"
" Fade windows in/out when opening/closing.\n"
"-F\n"
" Fade windows during opacity changes.\n"
"-i opacity\n"
" Opacity of inactive windows. (0.1 - 1.0)\n"
"-e opacity\n"
" Opacity of window titlebars and borders. (0.1 - 1.0)\n"
"-G\n"
" Don't draw shadows on DND windows\n"
"-b daemonize\n"
" Daemonize process.\n"
"-S\n"
" Enable synchronous operation (for debugging).\n"
"--config path\n"
" Look for configuration file at the path.\n"
"--shadow-red value\n"
" Red color value of shadow (0.0 - 1.0, defaults to 0).\n"
"--shadow-green value\n"
" Green color value of shadow (0.0 - 1.0, defaults to 0).\n"
"--shadow-blue value\n"
" Blue color value of shadow (0.0 - 1.0, defaults to 0).\n"
"--inactive-opacity-override\n"
" Inactive opacity set by -i overrides value of _NET_WM_OPACITY.\n"
"--inactive-dim value\n"
" Dim inactive windows. (0.0 - 1.0, defaults to 0)\n"
"--mark-wmwin-focused\n"
" Try to detect WM windows and mark them as active.\n"
"--shadow-exclude condition\n"
" Exclude conditions for shadows.\n"
"\n"
"Format of a condition:\n"
"\n"
" condition = <target>:<type>[<flags>]:<pattern>\n"
"\n"
" <target> is one of \"n\" (window name), \"i\" (window class\n"
" instance), and \"g\" (window general class)\n"
"\n"
" <type> is one of \"e\" (exact match), \"a\" (match anywhere),\n"
" \"s\" (match from start), \"w\" (wildcard), and \"p\" (PCRE\n"
" regular expressions, if compiled with the support).\n"
"\n"
" <flags> could be a series of flags. Currently the only defined\n"
" flag is \"i\" (ignore case).\n"
"\n"
" <pattern> is the actual pattern string.\n"
);
exit(1);
}
static void
register_cm(int scr) {
Window w;
Atom a;
char *buf;
int len, s;
if (scr < 0) return;
w = XCreateSimpleWindow(
dpy, RootWindow(dpy, 0),
0, 0, 1, 1, 0, None, None);
Xutf8SetWMProperties(
dpy, w, "xcompmgr", "xcompmgr",
NULL, 0, NULL, NULL, NULL);
len = strlen(REGISTER_PROP) + 2;
s = scr;
while (s >= 10) {
++len;
s /= 10;
}
buf = malloc(len);
snprintf(buf, len, REGISTER_PROP"%d", scr);
a = XInternAtom(dpy, buf, False);
free(buf);
XSetSelectionOwner(dpy, a, w, 0);
}
static void
fork_after(void) {
if (getppid() == 1) return;
int pid = fork();
if (pid == -1) {
fprintf(stderr, "Fork failed\n");
return;
}
if (pid > 0) _exit(0);
setsid();
freopen("/dev/null", "r", stdin);
freopen("/dev/null", "w", stdout);
freopen("/dev/null", "w", stderr);
}
/**
* Get a file stream of the configuration file to read.
*
* Follows the XDG specification to search for the configuration file.
*/
static FILE *
open_config_file(char *cpath, char **ppath) {
const static char *config_filename = "/compton.conf";
const static char *config_filename_legacy = "/.compton.conf";
const static char *config_home_suffix = "/.config";
const static char *config_system_dir = "/etc/xdg";
char *dir = NULL, *home = NULL;
char *path = cpath;
FILE *f = NULL;
if (path) {
f = fopen(path, "r");
if (f && ppath)
*ppath = path;
else
free(path);
return f;
}
// Check user configuration file in $XDG_CONFIG_HOME firstly
if (!((dir = getenv("XDG_CONFIG_HOME")) && strlen(dir))) {
if (!((home = getenv("HOME")) && strlen(home)))
return NULL;
path = mstrjoin3(home, config_home_suffix, config_filename);
}
else
path = mstrjoin(dir, config_filename);
f = fopen(path, "r");
if (f && ppath)
*ppath = path;
else
free(path);
if (f)
return f;
// Then check user configuration file in $HOME
if ((home = getenv("HOME")) && strlen(home)) {
path = mstrjoin(home, config_filename_legacy);
f = fopen(path, "r");
if (f && ppath)
*ppath = path;
else
free(path);
if (f)
return f;
}
// Check system configuration file in $XDG_CONFIG_DIRS at last
if ((dir = getenv("XDG_CONFIG_DIRS")) && strlen(dir)) {
char *part = strtok(dir, ":");
while (part) {
path = mstrjoin(part, config_filename);
f = fopen(path, "r");
if (f && ppath)
*ppath = path;
else
free(path);
if (f)
return f;
part = strtok(NULL, ":");
}
}
else {
path = mstrjoin(config_system_dir, config_filename);
f = fopen(path, "r");
if (f && ppath)
*ppath = path;
else
free(path);
if (f)
return f;
}
return NULL;
}
static char *
read_config(char *name, FILE *f) {
if (!f) {
if (name) f = fopen(name, "r");
if (!f) goto error;
}
struct stat s;
if (stat(name, &s) == -1) goto error;
char *buf = malloc(s.st_size);
fread(buf, 1, s.st_size, f);
fclose(f);
return buf;
error:
fprintf(stderr, "Could not open config: '%s'.\n", name);
return NULL;
}
static void
parse_config(char *name) {
char *path = NULL;
FILE *f = open_config_file(name, &path);
if (!f) return;
char *conf = read_config(path, f);
free(path);
if (conf == NULL) return;
json_value *root = json_parse(conf);
free(conf);
if (root == NULL) return;
if (root->type != json_object) {
fprintf(stderr, "Root node must be a JSON object.\n");
exit(1);
}
int i = root->u.object.length;
json_char *key;
json_value *val;
while (i--) {
key = root->u.object.values[i].name;
val = root->u.object.values[i].value;
// -D (fade_delta)
if (strcmp(key, "fade-delta") == 0) {
if (val->type != json_integer) continue;
options.fade_delta = val->u.integer;
// -I (fade_in_step)
} else if (strcmp(key, "fade-in-step") == 0) {
if (val->type != json_double) continue;
options.fade_in_step = normalize_d(val->u.dbl) * OPAQUE;
// -O (fade_out_step)
} else if (strcmp(key, "fade-out-step") == 0) {
if (val->type != json_double) continue;
options.fade_out_step = normalize_d(val->u.dbl) * OPAQUE;
// -r (shadow_radius)
} else if (strcmp(key, "shadow-radius") == 0) {
if (val->type != json_integer) continue;
options.shadow_radius = val->u.integer;
// -o (shadow_opacity)
} else if (strcmp(key, "shadow-opacity") == 0) {
if (val->type != json_double) continue;
options.shadow_opacity = val->u.dbl;
// -l (shadow_offset_x)
} else if (strcmp(key, "shadow-offset-x") == 0) {
if (val->type != json_integer) continue;
options.shadow_offset_x = val->u.integer;
// -t (shadow_offset_y)
} else if (strcmp(key, "shadow-offset-y") == 0) {
if (val->type != json_integer) continue;
options.shadow_offset_y = val->u.integer;
// -i (inactive_opacity)
} else if (strcmp(key, "inactive-opacity") == 0) {
if (val->type != json_double) continue;
options.inactive_opacity = normalize_d(val->u.dbl) * OPAQUE;
// -e (frame_opacity)
} else if (strcmp(key, "frame-opacity") == 0) {
if (val->type != json_double) continue;
options.frame_opacity = val->u.dbl;
// -z (clear_shadow)
} else if (strcmp(key, "clear-shadow") == 0) {
if (val->type != json_boolean) continue;
options.clear_shadow = val->u.boolean;
// -c (shadow_enable)
} else if (strcmp(key, "shadow") == 0 || strcmp(key, "shadows") == 0) {
if (val->type != json_boolean) continue;
if (val->u.boolean) {
options.shadow_enable = 2;
wintype_arr_enable(win_type_shadow);
}
// -C (no_dock_shadow)
} else if (strcmp(key, "no-dock-shadow") == 0) {
if (val->type != json_boolean) continue;
options.no_dock_shadow = val->u.boolean;
// -G (no_dnd_shadow)
} else if (strcmp(key, "no-dnd-shadow") == 0) {
if (val->type != json_boolean) continue;
options.no_dnd_shadow = val->u.boolean;
// -m (menu_opacity)
} else if (strcmp(key, "menu-opacity") == 0) {
if (val->type != json_double) continue;
options.menu_opacity = val->u.dbl;
// -f (fading_enable)
} else if (strcmp(key, "fading") == 0 || strcmp(key, "fades") == 0) {
if (val->type != json_boolean) continue;
if (val->u.boolean) {
options.fading_enable = 2;
wintype_arr_enable(win_type_fade);
}
// --shadow-red
} else if (strcmp(key, "shadow-red") == 0) {
if (val->type != json_double) continue;
options.shadow_red = val->u.dbl;
// --shadow-green
} else if (strcmp(key, "shadow-green") == 0) {
if (val->type != json_double) continue;
options.shadow_green = val->u.dbl;
// --shadow-blue
} else if (strcmp(key, "shadow-blue") == 0) {
if (val->type != json_double) continue;
options.shadow_blue = val->u.dbl;
// --inactive-opacity-override
} else if (strcmp(key, "inactive-opacity-override") == 0) {
if (val->type != json_boolean) continue;
options.inactive_opacity_override = val->u.boolean;
// --inactive-dim
} else if (strcmp(key, "inactive-dim") == 0) {
if (val->type != json_double) continue;
options.inactive_dim = val->u.dbl;
// --mark-wmwin-focused
} else if (strcmp(key, "mark-wmwin-focused") == 0) {
if (val->type != json_boolean) continue;
options.mark_wmwin_focused = val->u.boolean;
// --shadow-exclude
} else if (strcmp(key, "shadow-exclude") == 0) {
// Can be array or string
if (val->type == json_array) {
int j = val->u.array.length;
while (j--) {
json_value *vv = val->u.array.values[j];
condlst_add(&options.shadow_blacklist, vv->u.string.ptr);
}
} else if (val->type == json_string) {
condlst_add(&options.shadow_blacklist, val->u.string.ptr);
}
} else if (strcmp(key, "wintypes") == 0) {
if (val->type != json_object) continue;
// "wintypes": {
// "tooltip": {
// "fade": true,
// "shadow": false,
// "opacity": 0.75
// }
// }
int j = val->u.object.length;
while (j--) {
json_char *k = val->u.object.values[j].name;
json_value *v = val->u.object.values[j].value;
bool found = false;
wintype w = 0;
for (; w < NUM_WINTYPES; w++) {
if (strcmp(k, WINTYPES[w]) == 0) {
found = true;
break;
}
}
if (!found) continue;
if (v->type != json_object) continue;
int n = v->u.object.length;
while (n--) {
json_char *kk = v->u.object.values[n].name;
json_value *vv = v->u.object.values[n].value;
// TODO: add win_type_* to options struct?
if (strcmp(kk, "fade") == 0) {
if (vv->type != json_boolean) continue;
win_type_fade[w] = vv->u.boolean;
} else if (strcmp(kk, "shadow") == 0) {
if (vv->type != json_boolean) continue;
win_type_shadow[w] = vv->u.boolean;
} else if (strcmp(kk, "opacity") == 0) {
if (vv->type != json_double) continue;
win_type_opacity[w] = vv->u.dbl;
}
}
}
}
}
}
/**
* Process arguments and configuration files.
*/
static void
get_cfg(int argc, char *const *argv) {
const static char *shortopts = "D:I:O:d:r:o:m:l:t:i:e:scnfFCaSzGb";
const static struct option longopts[] = {
{ "config", required_argument, NULL, 256 },
{ "shadow-red", required_argument, NULL, 257 },
{ "shadow-green", required_argument, NULL, 258 },
{ "shadow-blue", required_argument, NULL, 259 },
{ "inactive-opacity-override", no_argument, NULL, 260 },
{ "inactive-dim", required_argument, NULL, 261 },
{ "mark-wmwin-focused", no_argument, NULL, 262 },
{ "shadow-exclude", required_argument, NULL, 263 },
// Must terminate with a NULL entry
{ NULL, 0, NULL, 0 },
};
int o, longopt_idx, i;
char *config_file = NULL;
for (i = 0; i < NUM_WINTYPES; ++i) {
win_type_fade[i] = False;
win_type_shadow[i] = False;
win_type_opacity[i] = 1.0;
}
// Pre-parse the commandline arguments to check for --config and invalid
// switches
while (-1 !=
(o = getopt_long(argc, argv, shortopts, longopts, &longopt_idx))) {
if (256 == o)
config_file = mstrcpy(optarg);
else if ('?' == o || ':' == o)
usage();
}
parse_config(config_file);
// Parse commandline arguments. Range checking will be done later.
optind = 1;
while (-1 !=
(o = getopt_long(argc, argv, shortopts, longopts, &longopt_idx))) {
switch (o) {
// Short options
case 'd':
options.display = optarg;
break;
case 'D':
options.fade_delta = atoi(optarg);
break;
case 'I':
options.fade_in_step = normalize_d(atof(optarg)) * OPAQUE;
break;
case 'O':
options.fade_out_step = normalize_d(atof(optarg)) * OPAQUE;
break;
case 'c':
if (2 != options.shadow_enable)
options.shadow_enable = 1;
break;
case 'C':
options.no_dock_shadow = True;
break;
case 'm':
options.menu_opacity = atof(optarg);
break;
case 'f':
if (2 != options.fading_enable)
options.fading_enable = 1;
break;
case 'F':
options.fade_trans = True;
break;
case 'S':
options.synchronize = True;
break;
case 'r':
options.shadow_radius = atoi(optarg);
break;
case 'o':
options.shadow_opacity = atof(optarg);
break;
case 'l':
options.shadow_offset_x = atoi(optarg);
break;
case 't':
options.shadow_offset_y = atoi(optarg);
break;
case 'i':
options.inactive_opacity = (normalize_d(atof(optarg)) * OPAQUE);
break;
case 'e':
options.frame_opacity = atof(optarg);
break;
case 'z':
options.clear_shadow = True;
break;
case 'n':
case 'a':
case 's':
fprintf(stderr, "Warning: "
"-n, -a, and -s have been removed.\n");
break;
case 'G':
options.no_dnd_shadow = True;
break;
case 'b':
options.fork_after_register = True;
break;
// Long options
case 256:
// --config
break;
case 257:
// --shadow-red
options.shadow_red = atof(optarg);
break;
case 258:
// --shadow-green
options.shadow_green = atof(optarg);
break;
case 259:
// --shadow-blue
options.shadow_blue = atof(optarg);
break;
case 260:
// --inactive-opacity-override
options.inactive_opacity_override = True;
break;
case 261:
// --inactive-dim
options.inactive_dim = atof(optarg);
break;
case 262:
// --mark-wmwin-focused
options.mark_wmwin_focused = True;
break;
case 263:
// --shadow-exclude
condlst_add(&options.shadow_blacklist, optarg);
break;
default:
usage();
break;
}
}
// Range checking and option assignments
options.fade_delta = max_i(options.fade_delta, 1);
options.shadow_radius = max_i(options.shadow_radius, 1);
options.shadow_red = normalize_d(options.shadow_red);
options.shadow_green = normalize_d(options.shadow_green);
options.shadow_blue = normalize_d(options.shadow_blue);
options.inactive_dim = normalize_d(options.inactive_dim);
options.frame_opacity = normalize_d(options.frame_opacity);
options.shadow_opacity = normalize_d(options.shadow_opacity);
options.menu_opacity = normalize_d(options.menu_opacity);
if (OPAQUE == options.inactive_opacity) {
options.inactive_opacity = 0;
}
if (1 == options.shadow_enable)
wintype_arr_enable(win_type_shadow);
win_type_shadow[WINTYPE_DESKTOP] = False;
if (options.no_dock_shadow)
win_type_shadow[WINTYPE_DOCK] = False;
if (options.no_dnd_shadow)
win_type_shadow[WINTYPE_DND] = False;
if (1 == options.fading_enable) {
wintype_arr_enable(win_type_fade);
}
if (1.0 != options.menu_opacity) {
win_type_opacity[WINTYPE_DROPDOWN_MENU] = options.menu_opacity;
win_type_opacity[WINTYPE_POPUP_MENU] = options.menu_opacity;
}
// Other variables determined by options
// Determine whether we need to track focus changes
if (options.inactive_opacity || options.inactive_dim) {
options.track_focus = True;
}
// Determine whether we need to track window name and class
if (options.shadow_blacklist || options.fade_blacklist)
options.track_wdata = True;
}
static void
get_atoms(void) {
extents_atom = XInternAtom(dpy, "_NET_FRAME_EXTENTS", False);
opacity_atom = XInternAtom(dpy, "_NET_WM_WINDOW_OPACITY", False);
frame_extents_atom = XInternAtom(dpy, "_NET_FRAME_EXTENTS", False);
client_atom = XA_WM_CLASS;
name_atom = XA_WM_NAME;
name_ewmh_atom = XInternAtom(dpy, "_NET_WM_NAME", False);
class_atom = XA_WM_CLASS;
win_type_atom = XInternAtom(dpy,
"_NET_WM_WINDOW_TYPE", False);
win_type[WINTYPE_UNKNOWN] = 0;
win_type[WINTYPE_DESKTOP] = XInternAtom(dpy,
"_NET_WM_WINDOW_TYPE_DESKTOP", False);
win_type[WINTYPE_DOCK] = XInternAtom(dpy,
"_NET_WM_WINDOW_TYPE_DOCK", False);
win_type[WINTYPE_TOOLBAR] = XInternAtom(dpy,
"_NET_WM_WINDOW_TYPE_TOOLBAR", False);
win_type[WINTYPE_MENU] = XInternAtom(dpy,
"_NET_WM_WINDOW_TYPE_MENU", False);
win_type[WINTYPE_UTILITY] = XInternAtom(dpy,
"_NET_WM_WINDOW_TYPE_UTILITY", False);
win_type[WINTYPE_SPLASH] = XInternAtom(dpy,
"_NET_WM_WINDOW_TYPE_SPLASH", False);
win_type[WINTYPE_DIALOG] = XInternAtom(dpy,
"_NET_WM_WINDOW_TYPE_DIALOG", False);
win_type[WINTYPE_NORMAL] = XInternAtom(dpy,
"_NET_WM_WINDOW_TYPE_NORMAL", False);
win_type[WINTYPE_DROPDOWN_MENU] = XInternAtom(dpy,
"_NET_WM_WINDOW_TYPE_DROPDOWN_MENU", False);
win_type[WINTYPE_POPUP_MENU] = XInternAtom(dpy,
"_NET_WM_WINDOW_TYPE_POPUP_MENU", False);
win_type[WINTYPE_TOOLTIP] = XInternAtom(dpy,
"_NET_WM_WINDOW_TYPE_TOOLTIP", False);
win_type[WINTYPE_NOTIFY] = XInternAtom(dpy,
"_NET_WM_WINDOW_TYPE_NOTIFICATION", False);
win_type[WINTYPE_COMBO] = XInternAtom(dpy,
"_NET_WM_WINDOW_TYPE_COMBO", False);
win_type[WINTYPE_DND] = XInternAtom(dpy,
"_NET_WM_WINDOW_TYPE_DND", False);
}
int
main(int argc, char **argv) {
XEvent ev;
Window root_return, parent_return;
Window *children;
unsigned int nchildren;
int i;
XRenderPictureAttributes pa;
struct pollfd ufd;
int composite_major, composite_minor;
win *t;
gettimeofday(&time_start, NULL);
// Set locale so window names with special characters are interpreted
// correctly
setlocale (LC_ALL, "");
get_cfg(argc, argv);
options.fade_time = get_time_in_milliseconds();
dpy = XOpenDisplay(options.display);
if (!dpy) {
fprintf(stderr, "Can't open display\n");
exit(1);
}
XSetErrorHandler(error);
if (options.synchronize) {
XSynchronize(dpy, 1);
}
scr = DefaultScreen(dpy);
root = RootWindow(dpy, scr);
if (!XRenderQueryExtension(dpy, &render_event, &render_error)) {
fprintf(stderr, "No render extension\n");
exit(1);
}
if (!XQueryExtension(dpy, COMPOSITE_NAME, &composite_opcode,
&composite_event, &composite_error)) {
fprintf(stderr, "No composite extension\n");
exit(1);
}
XCompositeQueryVersion(dpy, &composite_major, &composite_minor);
#if HAS_NAME_WINDOW_PIXMAP
if (composite_major > 0 || composite_minor >= 2) {
has_name_pixmap = True;
}
#endif
if (!XDamageQueryExtension(dpy, &damage_event, &damage_error)) {
fprintf(stderr, "No damage extension\n");
exit(1);
}
if (!XFixesQueryExtension(dpy, &xfixes_event, &xfixes_error)) {
fprintf(stderr, "No XFixes extension\n");
exit(1);
}
if (!XShapeQueryExtension(dpy, &shape_event, &shape_error)) {
shape_exists = False;
}
register_cm(scr);
if (options.fork_after_register) fork_after();
get_atoms();
pa.subwindow_mode = IncludeInferiors;
gaussian_map = make_gaussian_map(dpy, options.shadow_radius);
presum_gaussian(gaussian_map);
root_width = DisplayWidth(dpy, scr);
root_height = DisplayHeight(dpy, scr);
root_picture = XRenderCreatePicture(dpy, root,
XRenderFindVisualFormat(dpy, DefaultVisual(dpy, scr)),
CPSubwindowMode, &pa);
black_picture = solid_picture(dpy, True, 1, 0, 0, 0);
// Generates another Picture for shadows if the color is modified by
// user
if (!options.shadow_red && !options.shadow_green && !options.shadow_blue) {
cshadow_picture = black_picture;
} else {
cshadow_picture = solid_picture(dpy, True, 1,
options.shadow_red, options.shadow_green, options.shadow_blue);
}
// Generates a picture for options.inactive_dim
if (options.inactive_dim) {
dim_picture = solid_picture(dpy, True, options.inactive_dim, 0, 0, 0);
}
all_damage = None;
XGrabServer(dpy);
XCompositeRedirectSubwindows(
dpy, root, CompositeRedirectManual);
XSelectInput(dpy, root,
SubstructureNotifyMask
| ExposureMask
| StructureNotifyMask
| PropertyChangeMask);
XQueryTree(dpy, root, &root_return,
&parent_return, &children, &nchildren);
for (i = 0; i < nchildren; i++) {
add_win(dpy, children[i], i ? children[i-1] : None, False);
}
XFree(children);
if (options.track_focus) {
recheck_focus(dpy);
}
XUngrabServer(dpy);
ufd.fd = ConnectionNumber(dpy);
ufd.events = POLLIN;
t = paint_preprocess(dpy, list);
paint_all(dpy, None, t);
for (;;) {
do {
if (!QLength(dpy)) {
if (poll(&ufd, 1, fade_timeout()) == 0) {
break;
}
}
XNextEvent(dpy, &ev);
ev_handle((XEvent *)&ev);
} while (QLength(dpy));
t = paint_preprocess(dpy, list);
if (all_damage) {
static int paint;
paint_all(dpy, all_damage, t);
paint++;
XSync(dpy, False);
all_damage = None;
}
}
}
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