picom/src/compton.c

5727 lines
158 KiB
C

// SPDX-License-Identifier: MIT
/*
* Compton - a compositor for X11
*
* Based on `xcompmgr` - Copyright (c) 2003, Keith Packard
*
* Copyright (c) 2011-2013, Christopher Jeffrey
* See LICENSE-mit for more information.
*
*/
#include <ctype.h>
#include <string.h>
#include <xcb/randr.h>
#include <xcb/damage.h>
#include <xcb/render.h>
#include <xcb/xcb_image.h>
#include <ev.h>
#include "compton.h"
#ifdef CONFIG_OPENGL
#include "opengl.h"
#endif
#include "win.h"
#include "x.h"
#include "config.h"
static void
finish_destroy_win(session_t *ps, win **_w);
static void
configure_win(session_t *ps, xcb_configure_notify_event_t *ce);
static void
get_cfg(session_t *ps, int argc, char *const *argv, bool first_pass);
static void
update_refresh_rate(session_t *ps);
static bool
swopti_init(session_t *ps);
static void
cxinerama_upd_scrs(session_t *ps);
static void
session_destroy(session_t *ps);
static void
reset_enable(int __attribute__((unused)) signum);
#ifdef CONFIG_XINERAMA
static void
cxinerama_upd_scrs(session_t *ps);
#endif
static bool
vsync_drm_init(session_t *ps);
#ifdef CONFIG_VSYNC_DRM
static int
vsync_drm_wait(session_t *ps);
#endif
static bool
vsync_opengl_init(session_t *ps);
static bool
vsync_opengl_oml_init(session_t *ps);
static bool
vsync_opengl_swc_init(session_t *ps);
static bool
vsync_opengl_mswc_init(session_t *ps);
#ifdef CONFIG_OPENGL
static int
vsync_opengl_wait(session_t *ps);
static int
vsync_opengl_oml_wait(session_t *ps);
static void
vsync_opengl_swc_deinit(session_t *ps);
static void
vsync_opengl_mswc_deinit(session_t *ps);
#endif
static void
vsync_wait(session_t *ps);
static void
redir_start(session_t *ps);
static void
redir_stop(session_t *ps);
static win *
recheck_focus(session_t *ps);
static bool
get_root_tile(session_t *ps);
static double
get_opacity_percent(win *w);
static void
restack_win(session_t *ps, win *w, Window new_above);
static void
update_ewmh_active_win(session_t *ps);
static void
draw_callback(EV_P_ ev_idle *w, int revents);
typedef struct ev_session_timer {
ev_timer w;
session_t *ps;
} ev_session_timer;
typedef struct ev_session_idle {
ev_idle w;
session_t *ps;
} ev_session_idle;
typedef struct ev_session_prepare {
ev_prepare w;
session_t *ps;
} ev_session_prepare;
// === Global constants ===
/// Name strings for window types.
const char * const WINTYPES[NUM_WINTYPES] = {
"unknown",
"desktop",
"dock",
"toolbar",
"menu",
"utility",
"splash",
"dialog",
"normal",
"dropdown_menu",
"popup_menu",
"tooltip",
"notify",
"combo",
"dnd",
};
/// Names of VSync modes.
const char * const VSYNC_STRS[NUM_VSYNC + 1] = {
"none", // VSYNC_NONE
"drm", // VSYNC_DRM
"opengl", // VSYNC_OPENGL
"opengl-oml", // VSYNC_OPENGL_OML
"opengl-swc", // VSYNC_OPENGL_SWC
"opengl-mswc", // VSYNC_OPENGL_MSWC
NULL
};
/// Names of backends.
const char * const BACKEND_STRS[NUM_BKEND + 1] = {
"xrender", // BKEND_XRENDER
"glx", // BKEND_GLX
"xr_glx_hybrid",// BKEND_XR_GLX_HYBRID
NULL
};
/// Function pointers to init VSync modes.
static bool (* const (VSYNC_FUNCS_INIT[NUM_VSYNC]))(session_t *ps) = {
[VSYNC_DRM ] = vsync_drm_init,
[VSYNC_OPENGL ] = vsync_opengl_init,
[VSYNC_OPENGL_OML ] = vsync_opengl_oml_init,
[VSYNC_OPENGL_SWC ] = vsync_opengl_swc_init,
[VSYNC_OPENGL_MSWC ] = vsync_opengl_mswc_init,
};
/// Function pointers to wait for VSync.
static int (* const (VSYNC_FUNCS_WAIT[NUM_VSYNC]))(session_t *ps) = {
#ifdef CONFIG_VSYNC_DRM
[VSYNC_DRM ] = vsync_drm_wait,
#endif
#ifdef CONFIG_OPENGL
[VSYNC_OPENGL ] = vsync_opengl_wait,
[VSYNC_OPENGL_OML ] = vsync_opengl_oml_wait,
#endif
};
/// Function pointers to deinitialize VSync.
static void (* const (VSYNC_FUNCS_DEINIT[NUM_VSYNC]))(session_t *ps) = {
#ifdef CONFIG_OPENGL
[VSYNC_OPENGL_SWC ] = vsync_opengl_swc_deinit,
[VSYNC_OPENGL_MSWC ] = vsync_opengl_mswc_deinit,
#endif
};
/// Names of root window properties that could point to a pixmap of
/// background.
static const char *background_props_str[] = {
"_XROOTPMAP_ID",
"_XSETROOT_ID",
0,
};
// === Global variables ===
/// Pointer to current session, as a global variable. Only used by
/// <code>error()</code> and <code>reset_enable()</code>, which could not
/// have a pointer to current session passed in.
session_t *ps_g = NULL;
static inline void
__attribute__((nonnull(1, 2)))
set_tgt_clip(session_t *ps, region_t *reg) {
switch (ps->o.backend) {
case BKEND_XRENDER:
case BKEND_XR_GLX_HYBRID:
x_set_picture_clip_region(ps, ps->tgt_buffer.pict, 0, 0, reg);
break;
#ifdef CONFIG_OPENGL
case BKEND_GLX:
glx_set_clip(ps, reg);
break;
#endif
default:
assert(false);
}
}
void queue_redraw(session_t *ps) {
// If --benchmark is used, redraw is always queued
if (!ps->redraw_needed && !ps->o.benchmark)
ev_idle_start(ps->loop, &ps->draw_idle->w);
ps->redraw_needed = true;
}
static inline void
paint_region(session_t *ps, win *w, int x, int y, int wid, int hei,
double opacity, const region_t *reg_paint, xcb_render_picture_t pict) {
const int dx = (w ? w->g.x: 0) + x;
const int dy = (w ? w->g.y: 0) + y;
const bool argb = (w && (win_has_alpha(w) || ps->o.force_win_blend));
const bool neg = (w && w->invert_color);
render(ps, x, y, dx, dy, wid, hei, opacity, argb, neg,
pict, (w ? w->paint.ptex: ps->root_tile_paint.ptex),
reg_paint, (w ? &ps->o.glx_prog_win: NULL));
}
/**
* Get a region of the screen size.
*/
static inline void
get_screen_region(session_t *ps, region_t *res) {
pixman_box32_t b = {
.x1 = 0, .y1 = 0,
.x2 = ps->root_width,
.y2 = ps->root_height
};
pixman_region32_fini(res);
pixman_region32_init_rects(res, &b, 1);
}
/**
* Check if current backend uses XRender for rendering.
*/
static inline bool
bkend_use_xrender(session_t *ps) {
return BKEND_XRENDER == ps->o.backend
|| BKEND_XR_GLX_HYBRID == ps->o.backend;
}
/**
* Check whether a paint_t contains enough data.
*/
static inline bool
paint_isvalid(session_t *ps, const paint_t *ppaint) {
// Don't check for presence of Pixmap here, because older X Composite doesn't
// provide it
if (!ppaint)
return false;
if (bkend_use_xrender(ps) && !ppaint->pict)
return false;
#ifdef CONFIG_OPENGL
if (BKEND_GLX == ps->o.backend && !glx_tex_binded(ppaint->ptex, None))
return false;
#endif
return true;
}
void add_damage(session_t *ps, const region_t *damage) {
// Ignore damage when screen isn't redirected
if (!ps->redirected)
return;
if (!damage)
return;
pixman_region32_union(&ps->all_damage, &ps->all_damage, (region_t *)damage);
}
// === Fading ===
/**
* Get the time left before next fading point.
*
* In milliseconds.
*/
static double
fade_timeout(session_t *ps) {
int diff = ps->o.fade_delta - get_time_ms() + ps->fade_time;
diff = normalize_i_range(diff, 0, ps->o.fade_delta * 2);
return diff / 1000.0;
}
/**
* Run fading on a window.
*
* @param steps steps of fading
*/
static void
run_fade(session_t *ps, win *w, unsigned steps) {
// If we have reached target opacity, return
if (w->opacity == w->opacity_tgt) {
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) ps->o.fade_in_step * steps,
0.0, w->opacity_tgt);
else
w->opacity = normalize_d_range(
(double) w->opacity - (double) ps->o.fade_out_step * steps,
w->opacity_tgt, OPAQUE);
}
if (w->opacity != w->opacity_tgt) {
ps->fade_running = true;
}
}
/**
* Set fade callback of a window, and possibly execute the previous
* callback.
*
* If a callback can cause rendering result to change, it should call
* `queue_redraw`.
*
* @param exec_callback whether the previous callback is to be executed
*/
void set_fade_callback(session_t *ps, win **_w,
void (*callback) (session_t *ps, win **w), bool exec_callback) {
win *w = *_w;
void (*old_callback) (session_t *ps, 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(ps, _w);
}
/**
* Execute fade callback of a window if fading finished.
* XXX should be in win.c
*/
static inline void
check_fade_fin(session_t *ps, win **_w) {
win *w = *_w;
if (w->fade_callback && w->opacity == w->opacity_tgt) {
// Must be the last line as the callback could destroy w!
set_fade_callback(ps, _w, NULL, true);
}
}
// === Shadows ===
static double __attribute__((const))
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(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, x - center, 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(session_t *ps, conv *map) {
int center = map->size / 2;
int opacity, x, y;
ps->cgsize = map->size;
if (ps->shadow_corner)
free(ps->shadow_corner);
if (ps->shadow_top)
free(ps->shadow_top);
ps->shadow_corner = malloc((ps->cgsize + 1) * (ps->cgsize + 1) * 26);
ps->shadow_top = malloc((ps->cgsize + 1) * 26);
for (x = 0; x <= ps->cgsize; x++) {
ps->shadow_top[25 * (ps->cgsize + 1) + x] =
sum_gaussian(map, 1, x - center, center, ps->cgsize * 2, ps->cgsize * 2);
for (opacity = 0; opacity < 25; opacity++) {
ps->shadow_top[opacity * (ps->cgsize + 1) + x] =
ps->shadow_top[25 * (ps->cgsize + 1) + x] * opacity / 25;
}
for (y = 0; y <= x; y++) {
ps->shadow_corner[25 * (ps->cgsize + 1) * (ps->cgsize + 1) + y * (ps->cgsize + 1) + x]
= sum_gaussian(map, 1, x - center, y - center, ps->cgsize * 2, ps->cgsize * 2);
ps->shadow_corner[25 * (ps->cgsize + 1) * (ps->cgsize + 1) + x * (ps->cgsize + 1) + y]
= ps->shadow_corner[25 * (ps->cgsize + 1) * (ps->cgsize + 1) + y * (ps->cgsize + 1) + x];
for (opacity = 0; opacity < 25; opacity++) {
ps->shadow_corner[opacity * (ps->cgsize + 1) * (ps->cgsize + 1)
+ y * (ps->cgsize + 1) + x]
= ps->shadow_corner[opacity * (ps->cgsize + 1) * (ps->cgsize + 1)
+ x * (ps->cgsize + 1) + y]
= ps->shadow_corner[25 * (ps->cgsize + 1) * (ps->cgsize + 1)
+ y * (ps->cgsize + 1) + x] * opacity / 25;
}
}
}
}
static xcb_image_t *
make_shadow(session_t *ps, double opacity,
int width, int height) {
xcb_image_t *ximage;
int ylimit, xlimit;
int swidth = width + ps->cgsize;
int sheight = height + ps->cgsize;
int center = ps->cgsize / 2;
int x, y;
unsigned char d;
int x_diff;
int opacity_int = (int)(opacity * 25);
xcb_connection_t *c = XGetXCBConnection(ps->dpy);
ximage = xcb_image_create_native(c, swidth, sheight, XCB_IMAGE_FORMAT_Z_PIXMAP, 8,
0, 0, NULL);
if (!ximage) {
printf_errf("(): failed to create an X image");
return 0;
}
unsigned char *data = ximage->data;
uint32_t sstride = ximage->stride;
/*
* Build the gaussian in sections
*/
/*
* center (fill the complete data array)
*/
// XXX If the center part of the shadow would be entirely covered by
// the body of the window, we shouldn't need to fill the center here.
// XXX In general, we want to just fill the part that is not behind
// the window, in order to reduce CPU load and make transparent window
// look correct
if (ps->cgsize > 0) {
d = ps->shadow_top[opacity_int * (ps->cgsize + 1) + ps->cgsize];
} else {
d = sum_gaussian(ps->gaussian_map,
opacity, center, center, width, height);
}
memset(data, d, sheight * swidth);
/*
* corners
*/
ylimit = ps->cgsize;
if (ylimit > sheight / 2) ylimit = (sheight + 1) / 2;
xlimit = ps->cgsize;
if (xlimit > swidth / 2) xlimit = (swidth + 1) / 2;
for (y = 0; y < ylimit; y++) {
for (x = 0; x < xlimit; x++) {
if (xlimit == ps->cgsize && ylimit == ps->cgsize) {
d = ps->shadow_corner[opacity_int * (ps->cgsize + 1) * (ps->cgsize + 1)
+ y * (ps->cgsize + 1) + x];
} else {
d = sum_gaussian(ps->gaussian_map,
opacity, x - center, y - center, width, height);
}
data[y * sstride + x] = d;
data[(sheight - y - 1) * sstride + x] = d;
data[(sheight - y - 1) * sstride + (swidth - x - 1)] = d;
data[y * sstride + (swidth - x - 1)] = d;
}
}
/*
* top/bottom
*/
x_diff = swidth - (ps->cgsize * 2);
if (x_diff > 0 && ylimit > 0) {
for (y = 0; y < ylimit; y++) {
if (ylimit == ps->cgsize) {
d = ps->shadow_top[opacity_int * (ps->cgsize + 1) + y];
} else {
d = sum_gaussian(ps->gaussian_map,
opacity, center, y - center, width, height);
}
memset(&data[y * sstride + ps->cgsize], d, x_diff);
memset(&data[(sheight - y - 1) * sstride + ps->cgsize], d, x_diff);
}
}
/*
* sides
*/
for (x = 0; x < xlimit; x++) {
if (xlimit == ps->cgsize) {
d = ps->shadow_top[opacity_int * (ps->cgsize + 1) + x];
} else {
d = sum_gaussian(ps->gaussian_map,
opacity, x - center, center, width, height);
}
for (y = ps->cgsize; y < sheight - ps->cgsize; y++) {
data[y * sstride + x] = d;
data[y * sstride + (swidth - x - 1)] = d;
}
}
return ximage;
}
/**
* Generate shadow <code>Picture</code> for a window.
*/
static bool
win_build_shadow(session_t *ps, win *w, double opacity) {
const int width = w->widthb;
const int height = w->heightb;
xcb_image_t *shadow_image = NULL;
xcb_pixmap_t shadow_pixmap = None, shadow_pixmap_argb = None;
xcb_render_picture_t shadow_picture = None, shadow_picture_argb = None;
GC gc = None;
xcb_connection_t *c = XGetXCBConnection(ps->dpy);
shadow_image = make_shadow(ps, opacity, width, height);
if (!shadow_image) {
printf_errf("(): failed to make shadow");
return None;
}
shadow_pixmap = x_create_pixmap(ps, 8, ps->root, shadow_image->width, shadow_image->height);
shadow_pixmap_argb = x_create_pixmap(ps, 32, ps->root, shadow_image->width, shadow_image->height);
if (!shadow_pixmap || !shadow_pixmap_argb) {
printf_errf("(): failed to create shadow pixmaps");
goto shadow_picture_err;
}
shadow_picture = x_create_picture_with_standard_and_pixmap(ps,
XCB_PICT_STANDARD_A_8, shadow_pixmap, 0, NULL);
shadow_picture_argb = x_create_picture_with_standard_and_pixmap(ps,
XCB_PICT_STANDARD_ARGB_32, shadow_pixmap_argb, 0, NULL);
if (!shadow_picture || !shadow_picture_argb)
goto shadow_picture_err;
gc = XCreateGC(ps->dpy, shadow_pixmap, 0, 0);
if (!gc) {
printf_errf("(): failed to create graphic context");
goto shadow_picture_err;
}
xcb_image_put(c, shadow_pixmap, XGContextFromGC(gc), shadow_image, 0, 0, 0);
xcb_render_composite(c, XCB_RENDER_PICT_OP_SRC, ps->cshadow_picture, shadow_picture,
shadow_picture_argb, 0, 0, 0, 0, 0, 0,
shadow_image->width, shadow_image->height);
assert(!w->shadow_paint.pixmap);
w->shadow_paint.pixmap = shadow_pixmap_argb;
assert(!w->shadow_paint.pict);
w->shadow_paint.pict = shadow_picture_argb;
// Sync it once and only once
xr_sync(ps, w->shadow_paint.pixmap, NULL);
XFreeGC(ps->dpy, gc);
xcb_image_destroy(shadow_image);
xcb_free_pixmap(c, shadow_pixmap);
xcb_render_free_picture(c, shadow_picture);
return true;
shadow_picture_err:
if (shadow_image)
xcb_image_destroy(shadow_image);
if (shadow_pixmap)
xcb_free_pixmap(c, shadow_pixmap);
if (shadow_pixmap_argb)
xcb_free_pixmap(c, shadow_pixmap_argb);
if (shadow_picture)
xcb_render_free_picture(c, shadow_picture);
if (shadow_picture_argb)
xcb_render_free_picture(c, shadow_picture_argb);
if (gc)
XFreeGC(ps->dpy, gc);
return false;
}
/**
* Generate a 1x1 <code>Picture</code> of a particular color.
*/
static xcb_render_picture_t
solid_picture(session_t *ps, bool argb, double a,
double r, double g, double b) {
xcb_pixmap_t pixmap;
xcb_render_picture_t picture;
xcb_render_create_picture_value_list_t pa;
xcb_render_color_t col;
xcb_rectangle_t rect;
xcb_connection_t *c = XGetXCBConnection(ps->dpy);
pixmap = x_create_pixmap(ps, argb ? 32 : 8, ps->root, 1, 1);
if (!pixmap) return None;
pa.repeat = True;
picture = x_create_picture_with_standard_and_pixmap(ps,
argb ? XCB_PICT_STANDARD_ARGB_32 : XCB_PICT_STANDARD_A_8, pixmap,
XCB_RENDER_CP_REPEAT, &pa);
if (!picture) {
xcb_free_pixmap(c, pixmap);
return None;
}
col.alpha = a * 0xffff;
col.red = r * 0xffff;
col.green = g * 0xffff;
col.blue = b * 0xffff;
rect.x = 0;
rect.y = 0;
rect.width = 1;
rect.height = 1;
xcb_render_fill_rectangles(c, XCB_RENDER_PICT_OP_SRC, picture, col, 1, &rect);
xcb_free_pixmap(c, pixmap);
return picture;
}
// === Error handling ===
static void
discard_ignore(session_t *ps, unsigned long sequence) {
while (ps->ignore_head) {
if (sequence > ps->ignore_head->sequence) {
ignore_t *next = ps->ignore_head->next;
free(ps->ignore_head);
ps->ignore_head = next;
if (!ps->ignore_head) {
ps->ignore_tail = &ps->ignore_head;
}
} else {
break;
}
}
}
static int
should_ignore(session_t *ps, unsigned long sequence) {
discard_ignore(ps, sequence);
return ps->ignore_head && ps->ignore_head->sequence == sequence;
}
// === Windows ===
/**
* Determine the event mask for a window.
*/
long determine_evmask(session_t *ps, Window wid, win_evmode_t mode) {
long evmask = NoEventMask;
win *w = NULL;
// Check if it's a mapped frame window
if (WIN_EVMODE_FRAME == mode
|| ((w = find_win(ps, wid)) && IsViewable == w->a.map_state)) {
evmask |= PropertyChangeMask;
if (ps->o.track_focus && !ps->o.use_ewmh_active_win)
evmask |= FocusChangeMask;
}
// Check if it's a mapped client window
if (WIN_EVMODE_CLIENT == mode
|| ((w = find_toplevel(ps, wid)) && IsViewable == w->a.map_state)) {
if (ps->o.frame_opacity || ps->o.track_wdata || ps->track_atom_lst
|| ps->o.detect_client_opacity)
evmask |= PropertyChangeMask;
}
return evmask;
}
/**
* Find out the WM frame of a client window by querying X.
*
* @param ps current session
* @param wid window ID
* @return struct _win object of the found window, NULL if not found
*/
win *find_toplevel2(session_t *ps, Window wid) {
// TODO this should probably be an "update tree", then find_toplevel.
// current approach is a bit more "racy"
win *w = NULL;
// We traverse through its ancestors to find out the frame
while (wid && wid != ps->root && !(w = find_win(ps, 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(ps->dpy, wid, &troot, &parent, &tchildren,
&tnchildren)) {
parent = 0;
break;
}
cxfree(tchildren);
wid = parent;
}
return w;
}
/**
* Recheck currently focused window and set its <code>w->focused</code>
* to true.
*
* @param ps current session
* @return struct _win of currently focused window, NULL if not found
*/
static win *
recheck_focus(session_t *ps) {
// Use EWMH _NET_ACTIVE_WINDOW if enabled
if (ps->o.use_ewmh_active_win) {
update_ewmh_active_win(ps);
return ps->active_win;
}
// Determine the currently focused window so we can apply appropriate
// opacity on it
Window wid = 0;
int revert_to;
XGetInputFocus(ps->dpy, &wid, &revert_to);
win *w = find_win_all(ps, wid);
#ifdef DEBUG_EVENTS
print_timestamp(ps);
printf_dbgf("(): %#010lx (%#010lx \"%s\") focused.\n", wid,
(w ? w->id: None), (w ? w->name: NULL));
#endif
// And we set the focus state here
if (w) {
win_set_focused(ps, w, true);
return w;
}
return NULL;
}
static bool
get_root_tile(session_t *ps) {
/*
if (ps->o.paint_on_overlay) {
return ps->root_picture;
} */
xcb_connection_t *c = XGetXCBConnection(ps->dpy);
assert(!ps->root_tile_paint.pixmap);
ps->root_tile_fill = false;
bool fill = false;
xcb_pixmap_t pixmap = None;
// Get the values of background attributes
for (int p = 0; background_props_str[p]; p++) {
winprop_t prop = wid_get_prop(ps, ps->root,
get_atom(ps, background_props_str[p]),
1L, XCB_ATOM_PIXMAP, 32);
if (prop.nitems) {
pixmap = *prop.data.p32;
fill = false;
free_winprop(&prop);
break;
}
free_winprop(&prop);
}
// Make sure the pixmap we got is valid
if (pixmap && !validate_pixmap(ps, pixmap))
pixmap = None;
// Create a pixmap if there isn't any
if (!pixmap) {
pixmap = x_create_pixmap(ps, ps->depth, ps->root, 1, 1);
if (pixmap == XCB_NONE) {
fprintf(stderr, "Failed to create some pixmap\n");
exit(1);
}
fill = true;
}
// Create Picture
xcb_render_create_picture_value_list_t pa = {
.repeat = True,
};
ps->root_tile_paint.pict = x_create_picture_with_visual_and_pixmap(
ps, ps->vis, pixmap, XCB_RENDER_CP_REPEAT, &pa);
// Fill pixmap if needed
if (fill) {
xcb_render_color_t col;
xcb_rectangle_t rect;
col.red = col.green = col.blue = 0x8080;
col.alpha = 0xffff;
rect.x = rect.y = 0;
rect.width = rect.height = 1;
xcb_render_fill_rectangles(c, XCB_RENDER_PICT_OP_SRC, ps->root_tile_paint.pict, col, 1, &rect);
}
ps->root_tile_fill = fill;
ps->root_tile_paint.pixmap = pixmap;
#ifdef CONFIG_OPENGL
if (BKEND_GLX == ps->o.backend)
return glx_bind_pixmap(ps, &ps->root_tile_paint.ptex, ps->root_tile_paint.pixmap, 0, 0, 0);
#endif
return true;
}
/**
* Paint root window content.
*/
static void
paint_root(session_t *ps, const region_t *reg_paint) {
if (!ps->root_tile_paint.pixmap)
get_root_tile(ps);
paint_region(ps, NULL, 0, 0, ps->root_width, ps->root_height, 1.0, reg_paint,
ps->root_tile_paint.pict);
}
/**
* Look for the client window of a particular window.
*/
Window
find_client_win(session_t *ps, Window w) {
if (wid_has_prop(ps, w, ps->atom_client)) {
return w;
}
Window *children;
unsigned int nchildren;
unsigned int i;
Window ret = 0;
if (!wid_get_children(ps, w, &children, &nchildren)) {
return 0;
}
for (i = 0; i < nchildren; ++i) {
if ((ret = find_client_win(ps, children[i])))
break;
}
cxfree(children);
return ret;
}
/**
* Get alpha <code>Picture</code> for an opacity in <code>double</code>.
*/
static inline xcb_render_picture_t
get_alpha_pict_d(session_t *ps, double o) {
assert((round(normalize_d(o) / ps->o.alpha_step)) <= round(1.0 / ps->o.alpha_step));
return ps->alpha_picts[(int) (round(normalize_d(o)
/ ps->o.alpha_step))];
}
/**
* Get alpha <code>Picture</code> for an opacity in
* <code>opacity_t</code>.
*/
static inline xcb_render_picture_t
get_alpha_pict_o(session_t *ps, opacity_t o) {
return get_alpha_pict_d(ps, (double) o / OPAQUE);
}
static win *
paint_preprocess(session_t *ps, win *list) {
win *t = NULL, *next = NULL;
// Fading step calculation
time_ms_t steps = 0L;
if (ps->fade_time)
steps = (get_time_ms() - ps->fade_time +
FADE_DELTA_TOLERANCE*ps->o.fade_delta) /
ps->o.fade_delta;
// Reset fade_time if unset, or there appears to be a time disorder
if (!ps->fade_time || steps < 0L) {
ps->fade_time = get_time_ms();
steps = 0L;
}
ps->fade_time += steps * ps->o.fade_delta;
// First, let's process fading
for (win *w = list; w; w = next) {
next = w->next;
const winmode_t mode_old = w->mode;
const bool was_painted = w->to_paint;
const opacity_t opacity_old = w->opacity;
// Restore flags from last paint if the window is being faded out
if (IsUnmapped == w->a.map_state) {
win_set_shadow(ps, w, w->shadow_last);
w->fade = w->fade_last;
win_set_invert_color(ps, w, w->invert_color_last);
win_set_blur_background(ps, w, w->blur_background_last);
}
// Update window opacity target and dim state if asked
if (WFLAG_OPCT_CHANGE & w->flags) {
win_calc_opacity(ps, w);
win_calc_dim(ps, w);
}
// Run fading
run_fade(ps, w, steps);
if (win_has_frame(w))
w->frame_opacity = ps->o.frame_opacity;
else
w->frame_opacity = 1.0;
// Update window mode
win_determine_mode(ps, w);
// Destroy all reg_ignore above when frame opaque state changes on
// SOLID mode
if (was_painted && w->mode != mode_old)
w->reg_ignore_valid = false;
// Add window to damaged area if its opacity changes
// If was_painted == false, and to_paint is also false, we don't care
// If was_painted == false, but to_paint is true, damage will be added in the loop below
if (was_painted && w->opacity != opacity_old)
add_damage_from_win(ps, w);
}
// Opacity will not change, from now on.
rc_region_t *last_reg_ignore = rc_region_new();
bool unredir_possible = false;
// Trace whether it's the highest window to paint
bool is_highest = true;
bool reg_ignore_valid = true;
for (win *w = list; w; w = next) {
__label__ skip_window;
bool to_paint = true;
// w->to_paint remembers whether this window is painted last time
const bool was_painted = w->to_paint;
// In case calling the fade callback function destroys this window
next = w->next;
// Destroy reg_ignore if some window above us invalidated it
if (!reg_ignore_valid)
rc_region_unref(&w->reg_ignore);
//printf_errf("(): %d %d %s", w->a.map_state, w->ever_damaged, w->name);
// Give up if it's not damaged or invisible, or it's unmapped and its
// pixmap is gone (for example due to a ConfigureNotify), or when it's
// excluded
if (!w->ever_damaged
|| w->g.x + w->g.width < 1 || w->g.y + w->g.height < 1
|| w->g.x >= ps->root_width || w->g.y >= ps->root_height
|| ((IsUnmapped == w->a.map_state || w->destroyed) && !w->paint.pixmap)
|| get_alpha_pict_o(ps, w->opacity) == ps->alpha_picts[0]
|| w->paint_excluded)
to_paint = false;
// Add window to damaged area if its painting status changes
// or opacity changes
if (to_paint != was_painted) {
w->reg_ignore_valid = false;
add_damage_from_win(ps, w);
}
// to_paint will never change afterward
if (!to_paint)
goto skip_window;
// XXX shouldn't need these
// Fetch bounding region
if (!pixman_region32_not_empty(&w->bounding_shape))
win_update_bounding_shape(ps, w);
// Fetch window extents
region_t extents;
pixman_region32_init(&extents);
win_extents(w, &extents);
// Calculate shadow opacity
w->shadow_opacity = ps->o.shadow_opacity * get_opacity_percent(w) * ps->o.frame_opacity;
// Generate ignore region for painting to reduce GPU load
if (!w->reg_ignore)
w->reg_ignore = rc_region_ref(last_reg_ignore);
// If the window is solid, we add the window region to the
// ignored region
// Otherwise last_reg_ignore shouldn't change
if (w->mode == WMODE_SOLID && !ps->o.force_win_blend) {
region_t *tmp = rc_region_new();
if (w->frame_opacity == 1)
copy_region(tmp, &w->bounding_shape);
else {
win_get_region_noframe(ps, w, true, tmp);
pixman_region32_intersect(tmp, tmp, &w->bounding_shape);
}
pixman_region32_union(tmp, tmp, last_reg_ignore);
rc_region_unref(&last_reg_ignore);
last_reg_ignore = tmp;
}
// (Un)redirect screen
// We could definitely unredirect the screen when there's no window to
// paint, but this is typically unnecessary, may cause flickering when
// fading is enabled, and could create inconsistency when the wallpaper
// is not correctly set.
if (ps->o.unredir_if_possible && is_highest) {
if (win_is_solid(ps, w)
&& (w->frame_opacity == 1 || !win_has_frame(w))
&& win_is_fullscreen(ps, w)
&& !w->unredir_if_possible_excluded)
unredir_possible = true;
}
// Reset flags
w->flags = 0;
w->prev_trans = t;
t = w;
is_highest = false;
skip_window:
reg_ignore_valid = reg_ignore_valid && w->reg_ignore_valid;
w->reg_ignore_valid = true;
assert(w->destroyed == (w->fade_callback == finish_destroy_win));
check_fade_fin(ps, &w);
// Avoid setting w->to_paint if w is freed
if (w) {
w->to_paint = to_paint;
if (w->to_paint) {
// Save flags
w->shadow_last = w->shadow;
w->fade_last = w->fade;
w->invert_color_last = w->invert_color;
w->blur_background_last = w->blur_background;
}
}
}
rc_region_unref(&last_reg_ignore);
// If possible, unredirect all windows and stop painting
if (UNSET != ps->o.redirected_force)
unredir_possible = !ps->o.redirected_force;
else if (ps->o.unredir_if_possible && is_highest && !ps->redirected)
// If there's no window to paint, and the screen isn't redirected,
// don't redirect it.
unredir_possible = true;
if (unredir_possible) {
if (ps->redirected) {
if (!ps->o.unredir_if_possible_delay || ps->tmout_unredir_hit)
redir_stop(ps);
else if (!ev_is_active(&ps->unredir_timer->w)) {
ev_timer_set(&ps->unredir_timer->w,
ps->o.unredir_if_possible_delay / 1000.0, 0);
ev_timer_start(ps->loop, &ps->unredir_timer->w);
}
}
}
else {
ev_timer_stop(ps->loop, &ps->unredir_timer->w);
redir_start(ps);
}
return t;
}
/**
* Paint the shadow of a window.
*/
static inline void
win_paint_shadow(session_t *ps, win *w, region_t *reg_paint) {
// Bind shadow pixmap to GLX texture if needed
paint_bind_tex(ps, &w->shadow_paint, 0, 0, 32, false);
if (!paint_isvalid(ps, &w->shadow_paint)) {
printf_errf("(%#010lx): Missing shadow data.", w->id);
return;
}
render(ps, 0, 0, w->g.x + w->shadow_dx, w->g.y + w->shadow_dy,
w->shadow_width, w->shadow_height, w->shadow_opacity, true, false,
w->shadow_paint.pict, w->shadow_paint.ptex, reg_paint, NULL);
}
/**
* @brief Blur an area on a buffer.
*
* @param ps current session
* @param tgt_buffer a buffer as both source and destination
* @param x x pos
* @param y y pos
* @param wid width
* @param hei height
* @param blur_kerns blur kernels, ending with a NULL, guaranteed to have at
* least one kernel
* @param reg_clip a clipping region to be applied on intermediate buffers
*
* @return true if successful, false otherwise
*/
static bool
xr_blur_dst(session_t *ps, xcb_render_picture_t tgt_buffer,
int x, int y, int wid, int hei, xcb_render_fixed_t **blur_kerns,
const region_t *reg_clip) {
xcb_connection_t *c = XGetXCBConnection(ps->dpy);
assert(blur_kerns[0]);
// Directly copying from tgt_buffer to it does not work, so we create a
// Picture in the middle.
xcb_render_picture_t tmp_picture = x_create_picture(ps, wid, hei, NULL, 0, NULL);
if (!tmp_picture) {
printf_errf("(): Failed to build intermediate Picture.");
return false;
}
if (reg_clip && tmp_picture)
x_set_picture_clip_region(ps, tmp_picture, 0, 0, reg_clip);
xcb_render_picture_t src_pict = tgt_buffer, dst_pict = tmp_picture;
for (int i = 0; blur_kerns[i]; ++i) {
assert(i < MAX_BLUR_PASS - 1);
xcb_render_fixed_t *convolution_blur = blur_kerns[i];
int kwid = XFIXED_TO_DOUBLE(convolution_blur[0]),
khei = XFIXED_TO_DOUBLE(convolution_blur[1]);
bool rd_from_tgt = (tgt_buffer == src_pict);
// Copy from source picture to destination. The filter must
// be applied on source picture, to get the nearby pixels outside the
// window.
xcb_render_set_picture_filter(c, src_pict, strlen(XRFILTER_CONVOLUTION), XRFILTER_CONVOLUTION,
kwid * khei + 2, convolution_blur);
xcb_render_composite(c, XCB_RENDER_PICT_OP_SRC, src_pict, None, dst_pict,
(rd_from_tgt ? x: 0), (rd_from_tgt ? y: 0), 0, 0,
(rd_from_tgt ? 0: x), (rd_from_tgt ? 0: y), wid, hei);
xrfilter_reset(ps, src_pict);
{
xcb_xfixes_region_t tmp = src_pict;
src_pict = dst_pict;
dst_pict = tmp;
}
}
if (src_pict != tgt_buffer)
xcb_render_composite(c, XCB_RENDER_PICT_OP_SRC, src_pict, None, tgt_buffer,
0, 0, 0, 0, x, y, wid, hei);
free_picture(ps, &tmp_picture);
return true;
}
/*
* WORK-IN-PROGRESS!
static void
xr_take_screenshot(session_t *ps) {
XImage *img = XGetImage(ps->dpy, get_tgt_window(ps), 0, 0,
ps->root_width, ps->root_height, AllPlanes, XYPixmap);
if (!img) {
printf_errf("(): Failed to get XImage.");
return NULL;
}
assert(0 == img->xoffset);
}
*/
/**
* Blur the background of a window.
*/
static inline void
win_blur_background(session_t *ps, win *w, xcb_render_picture_t tgt_buffer,
const region_t *reg_paint) {
const int x = w->g.x;
const int y = w->g.y;
const int wid = w->widthb;
const int hei = w->heightb;
double factor_center = 1.0;
// Adjust blur strength according to window opacity, to make it appear
// better during fading
if (!ps->o.blur_background_fixed) {
double pct = 1.0 - get_opacity_percent(w) * (1.0 - 1.0 / 9.0);
factor_center = pct * 8.0 / (1.1 - pct);
}
switch (ps->o.backend) {
case BKEND_XRENDER:
case BKEND_XR_GLX_HYBRID:
{
// Normalize blur kernels
for (int i = 0; i < MAX_BLUR_PASS; ++i) {
xcb_render_fixed_t *kern_src = ps->o.blur_kerns[i];
xcb_render_fixed_t *kern_dst = ps->blur_kerns_cache[i];
assert(i < MAX_BLUR_PASS);
if (!kern_src) {
assert(!kern_dst);
break;
}
assert(!kern_dst
|| (kern_src[0] == kern_dst[0] && kern_src[1] == kern_dst[1]));
// Skip for fixed factor_center if the cache exists already
if (ps->o.blur_background_fixed && kern_dst) continue;
int kwid = XFIXED_TO_DOUBLE(kern_src[0]),
khei = XFIXED_TO_DOUBLE(kern_src[1]);
// Allocate cache space if needed
if (!kern_dst) {
kern_dst = malloc((kwid * khei + 2) * sizeof(xcb_render_fixed_t));
if (!kern_dst) {
printf_errf("(): Failed to allocate memory for blur kernel.");
return;
}
ps->blur_kerns_cache[i] = kern_dst;
}
// Modify the factor of the center pixel
kern_src[2 + (khei / 2) * kwid + kwid / 2] =
DOUBLE_TO_XFIXED(factor_center);
// Copy over
memcpy(kern_dst, kern_src, (kwid * khei + 2) * sizeof(xcb_render_fixed_t));
normalize_conv_kern(kwid, khei, kern_dst + 2);
}
// Minimize the region we try to blur, if the window itself is not
// opaque, only the frame is.
region_t reg_blur;
pixman_region32_init(&reg_blur);
pixman_region32_copy(&reg_blur, &w->bounding_shape);
if (win_is_solid(ps, w)) {
region_t reg_noframe;
pixman_region32_init(&reg_noframe);
win_get_region_noframe(ps, w, true, &reg_noframe);
pixman_region32_subtract(&reg_blur, &reg_blur, &reg_noframe);
pixman_region32_fini(&reg_noframe);
}
// Translate global coordinates to local ones
pixman_region32_translate(&reg_blur, -x, -y);
xr_blur_dst(ps, tgt_buffer, x, y, wid, hei, ps->blur_kerns_cache,
&reg_blur);
pixman_region32_clear(&reg_blur);
}
break;
#ifdef CONFIG_OPENGL
case BKEND_GLX:
// TODO: Handle frame opacity
glx_blur_dst(ps, x, y, wid, hei, ps->psglx->z - 0.5, factor_center,
reg_paint, &w->glx_blur_cache);
break;
#endif
default:
assert(0);
}
}
void
render(session_t *ps, int x, int y, int dx, int dy, int wid, int hei,
double opacity, bool argb, bool neg,
xcb_render_picture_t pict, glx_texture_t *ptex,
const region_t *reg_paint, const glx_prog_main_t *pprogram)
{
xcb_connection_t *c = XGetXCBConnection(ps->dpy);
switch (ps->o.backend) {
case BKEND_XRENDER:
case BKEND_XR_GLX_HYBRID:
{
xcb_render_picture_t alpha_pict = get_alpha_pict_d(ps, opacity);
if (alpha_pict != ps->alpha_picts[0]) {
int op = ((!argb && !alpha_pict) ? XCB_RENDER_PICT_OP_SRC: XCB_RENDER_PICT_OP_OVER);
xcb_render_composite(c, op, pict, alpha_pict,
ps->tgt_buffer.pict, x, y, 0, 0, dx, dy, wid, hei);
}
break;
}
#ifdef CONFIG_OPENGL
case BKEND_GLX:
glx_render(ps, ptex, x, y, dx, dy, wid, hei,
ps->psglx->z, opacity, argb, neg, reg_paint, pprogram);
ps->psglx->z += 1;
break;
#endif
default:
assert(0);
}
}
/**
* Paint a window itself and dim it if asked.
*/
static inline void
paint_one(session_t *ps, win *w, const region_t *reg_paint) {
xcb_connection_t *c = XGetXCBConnection(ps->dpy);
glx_mark(ps, w->id, true);
// Fetch Pixmap
if (!w->paint.pixmap && ps->has_name_pixmap) {
w->paint.pixmap = xcb_generate_id(c);
set_ignore_cookie(ps,
xcb_composite_name_window_pixmap(c, w->id, w->paint.pixmap));
if (w->paint.pixmap)
free_fence(ps, &w->fence);
}
Drawable draw = w->paint.pixmap;
if (!draw)
draw = w->id;
// XRender: Build picture
if (bkend_use_xrender(ps) && !w->paint.pict) {
xcb_render_create_picture_value_list_t pa = {
.subwindowmode = IncludeInferiors,
};
w->paint.pict = x_create_picture_with_pictfmt_and_pixmap(ps, w->pictfmt,
draw, XCB_RENDER_CP_SUBWINDOW_MODE, &pa);
}
if (IsViewable == w->a.map_state)
xr_sync(ps, draw, &w->fence);
// GLX: Build texture
// Let glx_bind_pixmap() determine pixmap size, because if the user
// is resizing windows, the width and height we get may not be up-to-date,
// causing the jittering issue M4he reported in #7.
if (!paint_bind_tex(ps, &w->paint, 0, 0, 0,
(!ps->o.glx_no_rebind_pixmap && w->pixmap_damaged))) {
printf_errf("(%#010lx): Failed to bind texture. Expect troubles.", w->id);
}
w->pixmap_damaged = false;
if (!paint_isvalid(ps, &w->paint)) {
printf_errf("(%#010lx): Missing painting data. This is a bad sign.", w->id);
return;
}
const int x = w->g.x;
const int y = w->g.y;
const int wid = w->widthb;
const int hei = w->heightb;
xcb_render_picture_t pict = w->paint.pict;
// Invert window color, if required
if (bkend_use_xrender(ps) && w->invert_color) {
xcb_render_picture_t newpict = x_create_picture(ps, wid, hei, w->pictfmt, 0, NULL);
if (newpict) {
// Apply clipping region to save some CPU
if (reg_paint) {
region_t reg;
pixman_region32_init(&reg);
pixman_region32_copy(&reg, (region_t *)reg_paint);
pixman_region32_translate(&reg, -x, -y);
// FIXME XFixesSetPictureClipRegion(ps->dpy, newpict, 0, 0, reg);
pixman_region32_fini(&reg);
}
xcb_render_composite(c, XCB_RENDER_PICT_OP_SRC, pict, None,
newpict, 0, 0, 0, 0, 0, 0, wid, hei);
xcb_render_composite(c, XCB_RENDER_PICT_OP_DIFFERENCE, ps->white_picture, None,
newpict, 0, 0, 0, 0, 0, 0, wid, hei);
// We use an extra PictOpInReverse operation to get correct pixel
// alpha. There could be a better solution.
if (win_has_alpha(w))
xcb_render_composite(c, XCB_RENDER_PICT_OP_IN_REVERSE, pict, None,
newpict, 0, 0, 0, 0, 0, 0, wid, hei);
pict = newpict;
}
}
const double dopacity = get_opacity_percent(w);
if (w->frame_opacity == 1) {
paint_region(ps, w, 0, 0, wid, hei, dopacity, reg_paint, pict);
} else {
// Painting parameters
const margin_t extents = win_calc_frame_extents(ps, w);
const int t = extents.top;
const int l = extents.left;
const int b = extents.bottom;
const int r = extents.right;
#define COMP_BDR(cx, cy, cwid, chei) \
paint_region(ps, w, (cx), (cy), (cwid), (chei), w->frame_opacity * dopacity, \
reg_paint, pict)
// Sanitize the margins, in case some broken WM makes
// top_width + bottom_width > height in some cases.
do {
// top
int body_height = hei;
// ctop = checked top
int ctop = min_i(body_height, t); // Make sure top margin is smaller than height
if (ctop > 0)
COMP_BDR(0, 0, wid, ctop);
body_height -= ctop;
if (body_height <= 0)
break;
// bottom
// cbot = checked bottom
int cbot = min_i(body_height, b); // Make sure bottom margin is not too large
if (cbot > 0)
COMP_BDR(0, hei-cbot, wid, cbot);
body_height -= cbot; // Height of window exclude the margin
if (body_height <= 0)
break;
// left
int body_width = wid;
int cleft = min_i(body_width, l);
if (cleft > 0)
COMP_BDR(0, ctop, cleft, body_height);
body_width -= cleft;
if (body_width <= 0)
break;
// right
int cright = min_i(body_width, r);
if (cright > 0)
COMP_BDR(wid - cright, ctop, cright, body_height);
body_width -= cright;
if (body_width <= 0)
break;
// body
paint_region(ps, w, cleft, ctop, body_width, body_height, dopacity, reg_paint, pict);
} while (0);
}
#undef COMP_BDR
if (pict != w->paint.pict)
free_picture(ps, &pict);
// Dimming the window if needed
if (w->dim) {
double dim_opacity = ps->o.inactive_dim;
if (!ps->o.inactive_dim_fixed)
dim_opacity *= get_opacity_percent(w);
switch (ps->o.backend) {
case BKEND_XRENDER:
case BKEND_XR_GLX_HYBRID:
{
unsigned short cval = 0xffff * dim_opacity;
// Premultiply color
xcb_render_color_t color = {
.red = 0, .green = 0, .blue = 0, .alpha = cval,
};
xcb_rectangle_t rect = {
.x = x,
.y = y,
.width = wid,
.height = hei,
};
xcb_render_fill_rectangles(c, XCB_RENDER_PICT_OP_OVER, ps->tgt_buffer.pict,
color, 1, &rect);
}
break;
#ifdef CONFIG_OPENGL
case BKEND_GLX:
glx_dim_dst(ps, x, y, wid, hei, ps->psglx->z - 0.7, dim_opacity,
reg_paint);
break;
#endif
default:
assert(false);
}
}
glx_mark(ps, w->id, false);
}
/**
* Rebuild cached <code>screen_reg</code>.
*/
static void
rebuild_screen_reg(session_t *ps) {
get_screen_region(ps, &ps->screen_reg);
}
/**
* Rebuild <code>shadow_exclude_reg</code>.
*/
static void
rebuild_shadow_exclude_reg(session_t *ps) {
bool ret = parse_geometry(ps, ps->o.shadow_exclude_reg_str,
&ps->shadow_exclude_reg);
if (!ret)
exit(1);
}
/// paint all windows
/// region = ??
/// region_real = the damage region
static void
paint_all(session_t *ps, region_t *region, const region_t *region_real, win * const t) {
xcb_connection_t *c = XGetXCBConnection(ps->dpy);
if (!region_real)
region_real = region;
#ifdef DEBUG_REPAINT
static struct timespec last_paint = { 0 };
#endif
if (!region)
region_real = region = &ps->screen_reg;
else
// Remove the damaged area out of screen
pixman_region32_intersect(region, region, &ps->screen_reg);
#ifdef CONFIG_OPENGL
if (bkend_use_glx(ps))
glx_paint_pre(ps, region);
#endif
#ifdef MONITOR_REPAINT
// Note: MONITOR_REPAINT cannot work with DBE right now.
// Picture old_tgt_buffer = ps->tgt_buffer.pict;
ps->tgt_buffer.pict = ps->tgt_picture;
#else
if (!paint_isvalid(ps, &ps->tgt_buffer)) {
// DBE painting mode: Directly paint to a Picture of the back buffer
if (BKEND_XRENDER == ps->o.backend && ps->o.dbe) {
ps->tgt_buffer.pict = x_create_picture_with_visual_and_pixmap(
ps, ps->vis, ps->root_dbe, 0, 0);
}
// No-DBE painting mode: Paint to an intermediate Picture then paint
// the Picture to root window
else {
if (!ps->tgt_buffer.pixmap) {
free_paint(ps, &ps->tgt_buffer);
ps->tgt_buffer.pixmap = x_create_pixmap(ps, ps->depth, ps->root, ps->root_width, ps->root_height);
if (ps->tgt_buffer.pixmap == XCB_NONE) {
fprintf(stderr, "Failed to allocate a screen-sized pixmap\n");
exit(1);
}
}
if (BKEND_GLX != ps->o.backend)
ps->tgt_buffer.pict = x_create_picture_with_visual_and_pixmap(
ps, ps->vis, ps->tgt_buffer.pixmap, 0, 0);
}
}
#endif
if (BKEND_XRENDER == ps->o.backend) {
x_set_picture_clip_region(ps, ps->tgt_picture, 0, 0, region_real);
}
#ifdef MONITOR_REPAINT
switch (ps->o.backend) {
case BKEND_XRENDER:
xcb_render_composite(c, XCB_RENDER_PICT_OP_SRC, ps->black_picture, None,
ps->tgt_picture, 0, 0, 0, 0, 0, 0,
ps->root_width, ps->root_height);
break;
case BKEND_GLX:
case BKEND_XR_GLX_HYBRID:
glClearColor(0.0f, 0.0f, 1.0f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT);
glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
break;
}
#endif
region_t reg_tmp, *reg_paint;
pixman_region32_init(&reg_tmp);
if (t) {
// Calculate the region upon which the root window is to be painted
// based on the ignore region of the lowest window, if available
pixman_region32_subtract(&reg_tmp, region, t->reg_ignore);
reg_paint = &reg_tmp;
} else {
reg_paint = region;
}
set_tgt_clip(ps, reg_paint);
paint_root(ps, reg_paint);
// Windows are sorted from bottom to top
// Each window has a reg_ignore, which is the region obscured by all the windows
// on top of that window. This is used to reduce the number of pixels painted.
//
// Whether this is beneficial is to be determined XXX
for (win *w = t; w; w = w->prev_trans) {
// Painting shadow
if (w->shadow) {
// Lazy shadow building
if (!w->shadow_paint.pixmap)
if (!win_build_shadow(ps, w, 1))
printf_errf("(): build shadow failed");
// Shadow doesn't need to be painted underneath the body of the window
// Because no one can see it
pixman_region32_subtract(&reg_tmp, region, w->reg_ignore);
// Mask out the region we don't want shadow on
if (pixman_region32_not_empty(&ps->shadow_exclude_reg))
pixman_region32_subtract(&reg_tmp, &reg_tmp, &ps->shadow_exclude_reg);
// Might be worth while to crop the region to shadow border
pixman_region32_intersect_rect(&reg_tmp, &reg_tmp,
w->g.x + w->shadow_dx, w->g.y + w->shadow_dy,
w->shadow_width, w->shadow_height);
// Mask out the body of the window from the shadow
// Doing it here instead of in make_shadow() for saving GPU
// power and handling shaped windows (XXX unconfirmed)
pixman_region32_subtract(&reg_tmp, &reg_tmp, &w->bounding_shape);
#ifdef CONFIG_XINERAMA
if (ps->o.xinerama_shadow_crop && w->xinerama_scr >= 0)
pixman_region32_intersect(&reg_tmp, &reg_tmp,
&ps->xinerama_scr_regs[w->xinerama_scr]);
#endif
// Detect if the region is empty before painting
if (pixman_region32_not_empty(&reg_tmp)) {
set_tgt_clip(ps, &reg_tmp);
win_paint_shadow(ps, w, &reg_tmp);
}
}
// Calculate the region based on the reg_ignore of the next (higher)
// window and the bounding region
// XXX XXX
pixman_region32_subtract(&reg_tmp, region, w->reg_ignore);
pixman_region32_intersect(&reg_tmp, &reg_tmp, &w->bounding_shape);
if (pixman_region32_not_empty(&reg_tmp)) {
set_tgt_clip(ps, &reg_tmp);
// Blur window background
if (w->blur_background && (!win_is_solid(ps, w)
|| (ps->o.blur_background_frame && w->frame_opacity != 1)))
win_blur_background(ps, w, ps->tgt_buffer.pict, &reg_tmp);
// Painting the window
paint_one(ps, w, &reg_tmp);
}
}
// Free up all temporary regions
pixman_region32_fini(&reg_tmp);
// Do this as early as possible
if (!ps->o.dbe)
set_tgt_clip(ps, &ps->screen_reg);
if (ps->o.vsync) {
// Make sure all previous requests are processed to achieve best
// effect
XSync(ps->dpy, False);
#ifdef CONFIG_OPENGL
if (glx_has_context(ps)) {
if (ps->o.vsync_use_glfinish)
glFinish();
else
glFlush();
glXWaitX();
}
#endif
}
// Wait for VBlank. We could do it aggressively (send the painting
// request and XFlush() on VBlank) or conservatively (send the request
// only on VBlank).
if (!ps->o.vsync_aggressive)
vsync_wait(ps);
switch (ps->o.backend) {
case BKEND_XRENDER:
// DBE painting mode, only need to swap the buffer
if (ps->o.dbe) {
XdbeSwapInfo swap_info = {
.swap_window = get_tgt_window(ps),
// Is it safe to use XdbeUndefined?
.swap_action = XdbeCopied
};
XdbeSwapBuffers(ps->dpy, &swap_info, 1);
}
// No-DBE painting mode
else if (ps->tgt_buffer.pict != ps->tgt_picture) {
xcb_render_composite(
c, XCB_RENDER_PICT_OP_SRC, ps->tgt_buffer.pict, None,
ps->tgt_picture, 0, 0, 0, 0,
0, 0, ps->root_width, ps->root_height);
}
break;
#ifdef CONFIG_OPENGL
case BKEND_XR_GLX_HYBRID:
XSync(ps->dpy, False);
if (ps->o.vsync_use_glfinish)
glFinish();
else
glFlush();
glXWaitX();
assert(ps->tgt_buffer.pixmap);
xr_sync(ps, ps->tgt_buffer.pixmap, &ps->tgt_buffer_fence);
paint_bind_tex(ps, &ps->tgt_buffer,
ps->root_width, ps->root_height, ps->depth,
!ps->o.glx_no_rebind_pixmap);
// See #163
xr_sync(ps, ps->tgt_buffer.pixmap, &ps->tgt_buffer_fence);
if (ps->o.vsync_use_glfinish)
glFinish();
else
glFlush();
glXWaitX();
glx_render(ps, ps->tgt_buffer.ptex, 0, 0, 0, 0,
ps->root_width, ps->root_height, 0, 1.0, false, false,
region_real, NULL);
// falls through
case BKEND_GLX:
glXSwapBuffers(ps->dpy, get_tgt_window(ps));
break;
#endif
default:
assert(0);
}
glx_mark_frame(ps);
if (ps->o.vsync_aggressive)
vsync_wait(ps);
XFlush(ps->dpy);
#ifdef CONFIG_OPENGL
if (glx_has_context(ps)) {
glFlush();
glXWaitX();
}
#endif
#ifdef DEBUG_REPAINT
print_timestamp(ps);
struct timespec now = get_time_timespec();
struct timespec diff = { 0 };
timespec_subtract(&diff, &now, &last_paint);
printf("[ %5ld:%09ld ] ", diff.tv_sec, diff.tv_nsec);
last_paint = now;
printf("paint:");
for (win *w = t; w; w = w->prev_trans)
printf(" %#010lx", w->id);
putchar('\n');
fflush(stdout);
#endif
// Check if fading is finished on all painted windows
{
win *pprev = NULL;
for (win *w = t; w; w = pprev) {
pprev = w->prev_trans;
check_fade_fin(ps, &w);
}
}
}
static void
repair_win(session_t *ps, win *w) {
if (IsViewable != w->a.map_state)
return;
xcb_connection_t *c = XGetXCBConnection(ps->dpy);
region_t parts;
pixman_region32_init(&parts);
if (!w->ever_damaged) {
win_extents(w, &parts);
set_ignore_cookie(ps,
xcb_damage_subtract(c, w->damage, XCB_NONE, XCB_NONE));
} else {
xcb_xfixes_region_t tmp = xcb_generate_id(c);
xcb_xfixes_create_region(c, tmp, 0, NULL);
set_ignore_cookie(ps,
xcb_damage_subtract(c, w->damage, XCB_NONE, tmp));
xcb_xfixes_translate_region(c, tmp,
w->g.x + w->g.border_width,
w->g.y + w->g.border_width);
x_fetch_region(ps, tmp, &parts);
}
w->ever_damaged = true;
w->pixmap_damaged = true;
// Why care about damage when screen is unredirected?
// We will force full-screen repaint on redirection.
if (!ps->redirected) {
pixman_region32_fini(&parts);
return;
}
// Remove the part in the damage area that could be ignored
if (w->reg_ignore && win_is_region_ignore_valid(ps, w))
pixman_region32_subtract(&parts, &parts, w->reg_ignore);
add_damage(ps, &parts);
pixman_region32_fini(&parts);
}
static void
finish_map_win(session_t *ps, win **_w) {
win *w = *_w;
w->in_openclose = false;
if (ps->o.no_fading_openclose) {
win_determine_fade(ps, w);
}
}
void
map_win(session_t *ps, Window id) {
xcb_connection_t *c = XGetXCBConnection(ps->dpy);
// Unmap overlay window if it got mapped but we are currently not
// in redirected state.
if (ps->overlay && id == ps->overlay && !ps->redirected) {
XUnmapWindow(ps->dpy, ps->overlay);
XFlush(ps->dpy);
}
win *w = find_win(ps, id);
#ifdef DEBUG_EVENTS
printf_dbgf("(%#010lx \"%s\"): %p\n", id, (w ? w->name: NULL), w);
#endif
// Don't care about window mapping if it's an InputOnly window
// Try avoiding mapping a window twice
if (!w || InputOnly == w->a._class
|| IsViewable == w->a.map_state)
return;
assert(!win_is_focused_real(ps, w));
w->a.map_state = IsViewable;
cxinerama_win_upd_scr(ps, w);
// Call XSelectInput() before reading properties so that no property
// changes are lost
XSelectInput(ps->dpy, id, determine_evmask(ps, id, WIN_EVMODE_FRAME));
// Notify compton when the shape of a window changes
if (ps->shape_exists) {
xcb_shape_select_input(c, id, 1);
}
// Make sure the XSelectInput() requests are sent
XFlush(ps->dpy);
// Update window mode here to check for ARGB windows
win_determine_mode(ps, w);
// Detect client window here instead of in add_win() as the client
// window should have been prepared at this point
if (!w->client_win) {
win_recheck_client(ps, w);
}
else {
// Re-mark client window here
win_mark_client(ps, w, w->client_win);
}
assert(w->client_win);
#ifdef DEBUG_WINTYPE
printf_dbgf("(%#010lx): type %s\n", w->id, WINTYPES[w->window_type]);
#endif
// FocusIn/Out may be ignored when the window is unmapped, so we must
// recheck focus here
if (ps->o.track_focus)
recheck_focus(ps);
// Update window focus state
win_update_focused(ps, w);
// Update opacity and dim state
win_update_opacity_prop(ps, w);
w->flags |= WFLAG_OPCT_CHANGE;
// Check for _COMPTON_SHADOW
if (ps->o.respect_prop_shadow)
win_update_prop_shadow_raw(ps, w);
// Many things above could affect shadow
win_determine_shadow(ps, w);
// Set fading state
w->in_openclose = true;
set_fade_callback(ps, &w, finish_map_win, true);
win_determine_fade(ps, w);
win_determine_blur_background(ps, w);
w->ever_damaged = false;
/* if any configure events happened while
the window was unmapped, then configure
the window to its correct place */
if (w->need_configure)
configure_win(ps, &w->queue_configure);
#ifdef CONFIG_DBUS
// Send D-Bus signal
if (ps->o.dbus) {
cdbus_ev_win_mapped(ps, w);
}
#endif
}
static void
finish_unmap_win(session_t *ps, win **_w) {
win *w = *_w;
w->ever_damaged = false;
w->in_openclose = false;
w->reg_ignore_valid = false;
/* damage region */
add_damage_from_win(ps, w);
free_wpaint(ps, w);
free_paint(ps, &w->shadow_paint);
}
static void
unmap_win(session_t *ps, win **_w) {
win *w = *_w;
if (!w || IsUnmapped == w->a.map_state) return;
if (w->destroyed) return;
// One last synchronization
if (w->paint.pixmap)
xr_sync(ps, w->paint.pixmap, &w->fence);
free_fence(ps, &w->fence);
// Set focus out
win_set_focused(ps, w, false);
w->a.map_state = IsUnmapped;
// Fading out
w->flags |= WFLAG_OPCT_CHANGE;
set_fade_callback(ps, _w, finish_unmap_win, false);
w->in_openclose = true;
win_determine_fade(ps, w);
// Validate pixmap if we have to do fading
if (w->fade)
win_validate_pixmap(ps, w);
// don't care about properties anymore
win_ev_stop(ps, w);
#ifdef CONFIG_DBUS
// Send D-Bus signal
if (ps->o.dbus) {
cdbus_ev_win_unmapped(ps, w);
}
#endif
}
static void
restack_win(session_t *ps, 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) {
w->reg_ignore_valid = false;
rc_region_unref(&w->reg_ignore);
if (w->next) {
w->next->reg_ignore_valid = false;
rc_region_unref(&w->next->reg_ignore);
}
win **prev = NULL, **prev_old = NULL;
// unhook
for (prev = &ps->list; *prev; prev = &(*prev)->next) {
if ((*prev) == w) break;
}
prev_old = prev;
bool found = false;
// rehook
for (prev = &ps->list; *prev; prev = &(*prev)->next) {
if ((*prev)->id == new_above && !(*prev)->destroyed) {
found = true;
break;
}
}
if (new_above && !found) {
printf_errf("(%#010lx, %#010lx): "
"Failed to found new above window.", w->id, new_above);
return;
}
*prev_old = w->next;
w->next = *prev;
*prev = w;
#ifdef DEBUG_RESTACK
{
const char *desc;
char *window_name = NULL;
bool to_free;
win* c = ps->list;
printf_dbgf("(%#010lx, %#010lx): "
"Window stack modified. Current stack:\n", w->id, new_above);
for (; c; c = c->next) {
window_name = "(Failed to get title)";
to_free = ev_window_name(ps, c->id, &window_name);
desc = "";
if (c->destroyed) desc = "(D) ";
printf("%#010lx \"%s\" %s", c->id, window_name, desc);
if (c->next)
printf("-> ");
if (to_free) {
cxfree(window_name);
window_name = NULL;
}
}
fputs("\n", stdout);
}
#endif
}
}
static bool
init_filters(session_t *ps);
static void
configure_win(session_t *ps, xcb_configure_notify_event_t *ce) {
// On root window changes
if (ce->window == ps->root) {
free_paint(ps, &ps->tgt_buffer);
ps->root_width = ce->width;
ps->root_height = ce->height;
rebuild_screen_reg(ps);
rebuild_shadow_exclude_reg(ps);
free_all_damage_last(ps);
// Re-redirect screen if required
if (ps->o.reredir_on_root_change && ps->redirected) {
redir_stop(ps);
redir_start(ps);
}
// Invalidate reg_ignore from the top
rc_region_unref(&ps->list->reg_ignore);
ps->list->reg_ignore_valid = false;
#ifdef CONFIG_OPENGL
// Reinitialize GLX on root change
if (ps->o.glx_reinit_on_root_change && ps->psglx) {
if (!glx_reinit(ps, bkend_use_glx(ps)))
printf_errf("(): Failed to reinitialize GLX, troubles ahead.");
if (BKEND_GLX == ps->o.backend && !init_filters(ps))
printf_errf("(): Failed to initialize filters.");
}
// GLX root change callback
if (BKEND_GLX == ps->o.backend)
glx_on_root_change(ps);
#endif
force_repaint(ps);
return;
}
// Other window changes
win *w = find_win(ps, ce->window);
region_t damage;
pixman_region32_init(&damage);
if (!w)
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(ps, w, ce->above_sibling);
} else {
if (!w->need_configure)
restack_win(ps, w, ce->above_sibling);
bool factor_change = false;
w->need_configure = false;
win_extents(w, &damage);
// If window geometry change, free old extents
if (w->g.x != ce->x || w->g.y != ce->y
|| w->g.width != ce->width || w->g.height != ce->height
|| w->g.border_width != ce->border_width) {
factor_change = true;
pixman_region32_clear(&w->bounding_shape);
}
w->g.x = ce->x;
w->g.y = ce->y;
if (w->g.width != ce->width || w->g.height != ce->height
|| w->g.border_width != ce->border_width)
free_wpaint(ps, w);
if (w->g.width != ce->width || w->g.height != ce->height
|| w->g.border_width != ce->border_width) {
w->g.width = ce->width;
w->g.height = ce->height;
w->g.border_width = ce->border_width;
calc_win_size(ps, w);
win_update_bounding_shape(ps, w);
}
region_t new_extents;
pixman_region32_init(&new_extents);
win_extents(w, &new_extents);
pixman_region32_union(&damage, &damage, &new_extents);
pixman_region32_fini(&new_extents);
if (factor_change) {
add_damage(ps, &damage);
cxinerama_win_upd_scr(ps, w);
win_on_factor_change(ps, w);
}
}
pixman_region32_fini(&damage);
// override_redirect flag cannot be changed after window creation, as far
// as I know, so there's no point to re-match windows here.
w->a.override_redirect = ce->override_redirect;
}
static void
circulate_win(session_t *ps, xcb_circulate_notify_event_t *ce) {
win *w = find_win(ps, ce->window);
Window new_above;
if (!w) return;
if (ce->place == PlaceOnTop) {
new_above = ps->list->id;
} else {
new_above = None;
}
restack_win(ps, w, new_above);
}
static void
finish_destroy_win(session_t *ps, win **_w) {
win *w = *_w;
assert(w->destroyed);
win **prev = NULL, *i = NULL;
#ifdef DEBUG_EVENTS
printf_dbgf("(%#010lx): Starting...\n", w->id);
#endif
for (prev = &ps->list; (i = *prev); prev = &i->next) {
if (w == i) {
#ifdef DEBUG_EVENTS
printf_dbgf("(%#010lx \"%s\"): %p\n", w->id, w->name, w);
#endif
finish_unmap_win(ps, _w);
*prev = w->next;
// Clear active_win if it's pointing to the destroyed window
if (w == ps->active_win)
ps->active_win = NULL;
free_win_res(ps, w);
// Drop w from all prev_trans to avoid accessing freed memory in
// repair_win()
for (win *w2 = ps->list; w2; w2 = w2->next)
if (w == w2->prev_trans)
w2->prev_trans = NULL;
free(w);
*_w = NULL;
break;
}
}
}
static void
destroy_win(session_t *ps, Window id) {
win *w = find_win(ps, id);
#ifdef DEBUG_EVENTS
printf_dbgf("(%#010lx \"%s\"): %p\n", id, (w ? w->name: NULL), w);
#endif
if (w) {
unmap_win(ps, &w);
w->destroyed = true;
if (ps->o.no_fading_destroyed_argb)
win_determine_fade(ps, w);
// Set fading callback
set_fade_callback(ps, &w, finish_destroy_win, false);
#ifdef CONFIG_DBUS
// Send D-Bus signal
if (ps->o.dbus) {
cdbus_ev_win_destroyed(ps, w);
}
#endif
}
}
static inline void
root_damaged(session_t *ps) {
if (ps->root_tile_paint.pixmap) {
XClearArea(ps->dpy, ps->root, 0, 0, 0, 0, true);
free_root_tile(ps);
}
// Mark screen damaged
force_repaint(ps);
}
/**
* Xlib error handler function.
*/
static int
xerror(Display __attribute__((unused)) *dpy, XErrorEvent *ev) {
if (!should_ignore(ps_g, ev->serial))
x_print_error(ev->serial, ev->request_code, ev->minor_code, ev->error_code);
return 0;
}
/**
* XCB error handler function.
*/
void
ev_xcb_error(session_t __attribute__((unused)) *ps, xcb_generic_error_t *err) {
if (!should_ignore(ps, err->sequence))
x_print_error(err->sequence, err->major_code, err->minor_code, err->error_code);
}
static void
expose_root(session_t *ps, const rect_t *rects, int nrects) {
free_all_damage_last(ps);
region_t region;
pixman_region32_init_rects(&region, rects, nrects);
add_damage(ps, &region);
}
/**
* Force a full-screen repaint.
*/
void
force_repaint(session_t *ps) {
assert(pixman_region32_not_empty(&ps->screen_reg));
queue_redraw(ps);
add_damage(ps, &ps->screen_reg);
}
#ifdef CONFIG_DBUS
/** @name DBus hooks
*/
///@{
/**
* Set w->shadow_force of a window.
*/
void
win_set_shadow_force(session_t *ps, win *w, switch_t val) {
if (val != w->shadow_force) {
w->shadow_force = val;
win_determine_shadow(ps, w);
queue_redraw(ps);
}
}
/**
* Set w->fade_force of a window.
*/
void
win_set_fade_force(session_t *ps, win *w, switch_t val) {
if (val != w->fade_force) {
w->fade_force = val;
win_determine_fade(ps, w);
queue_redraw(ps);
}
}
/**
* Set w->focused_force of a window.
*/
void
win_set_focused_force(session_t *ps, win *w, switch_t val) {
if (val != w->focused_force) {
w->focused_force = val;
win_update_focused(ps, w);
queue_redraw(ps);
}
}
/**
* Set w->invert_color_force of a window.
*/
void
win_set_invert_color_force(session_t *ps, win *w, switch_t val) {
if (val != w->invert_color_force) {
w->invert_color_force = val;
win_determine_invert_color(ps, w);
queue_redraw(ps);
}
}
/**
* Enable focus tracking.
*/
void
opts_init_track_focus(session_t *ps) {
// Already tracking focus
if (ps->o.track_focus)
return;
ps->o.track_focus = true;
if (!ps->o.use_ewmh_active_win) {
// Start listening to FocusChange events
for (win *w = ps->list; w; w = w->next)
if (IsViewable == w->a.map_state)
XSelectInput(ps->dpy, w->id,
determine_evmask(ps, w->id, WIN_EVMODE_FRAME));
}
// Recheck focus
recheck_focus(ps);
}
/**
* Set no_fading_openclose option.
*/
void
opts_set_no_fading_openclose(session_t *ps, bool newval) {
if (newval != ps->o.no_fading_openclose) {
ps->o.no_fading_openclose = newval;
for (win *w = ps->list; w; w = w->next)
win_determine_fade(ps, w);
queue_redraw(ps);
}
}
//!@}
#endif
static inline int __attribute__((unused))
ev_serial(xcb_generic_event_t *ev) {
return ev->full_sequence;
}
static inline const char * __attribute__((unused))
ev_name(session_t *ps, xcb_generic_event_t *ev) {
static char buf[128];
switch (ev->response_type & 0x7f) {
CASESTRRET(FocusIn);
CASESTRRET(FocusOut);
CASESTRRET(CreateNotify);
CASESTRRET(ConfigureNotify);
CASESTRRET(DestroyNotify);
CASESTRRET(MapNotify);
CASESTRRET(UnmapNotify);
CASESTRRET(ReparentNotify);
CASESTRRET(CirculateNotify);
CASESTRRET(Expose);
CASESTRRET(PropertyNotify);
CASESTRRET(ClientMessage);
}
if (ps->damage_event + XCB_DAMAGE_NOTIFY == ev->response_type)
return "Damage";
if (ps->shape_exists && ev->response_type == ps->shape_event)
return "ShapeNotify";
#ifdef CONFIG_XSYNC
if (ps->xsync_exists) {
int o = ev->response_type - ps->xsync_event;
switch (o) {
CASESTRRET(XSyncCounterNotify);
CASESTRRET(XSyncAlarmNotify);
}
}
#endif
sprintf(buf, "Event %d", ev->response_type);
return buf;
}
static inline Window __attribute__((unused))
ev_window(session_t *ps, xcb_generic_event_t *ev) {
switch (ev->response_type) {
case FocusIn:
case FocusOut:
return ((xcb_focus_in_event_t *)ev)->event;
case CreateNotify:
return ((xcb_create_notify_event_t *)ev)->window;
case ConfigureNotify:
return ((xcb_configure_notify_event_t *)ev)->window;
case DestroyNotify:
return ((xcb_destroy_notify_event_t *)ev)->window;
case MapNotify:
return ((xcb_map_notify_event_t *)ev)->window;
case UnmapNotify:
return ((xcb_unmap_notify_event_t *)ev)->window;
case ReparentNotify:
return ((xcb_reparent_notify_event_t *)ev)->window;
case CirculateNotify:
return ((xcb_circulate_notify_event_t *)ev)->window;
case Expose:
return ((xcb_expose_event_t *)ev)->window;
case PropertyNotify:
return ((xcb_property_notify_event_t *)ev)->window;
case ClientMessage:
return ((xcb_client_message_event_t *)ev)->window;
default:
if (ps->damage_event + XCB_DAMAGE_NOTIFY == ev->response_type) {
return ((xcb_damage_notify_event_t *)ev)->drawable;
}
if (ps->shape_exists && ev->response_type == ps->shape_event) {
return ((xcb_shape_notify_event_t *) ev)->affected_window;
}
return 0;
}
}
static inline const char *
ev_focus_mode_name(xcb_focus_in_event_t* ev) {
switch (ev->mode) {
CASESTRRET(NotifyNormal);
CASESTRRET(NotifyWhileGrabbed);
CASESTRRET(NotifyGrab);
CASESTRRET(NotifyUngrab);
}
return "Unknown";
}
static inline const char *
ev_focus_detail_name(xcb_focus_in_event_t* ev) {
switch (ev->detail) {
CASESTRRET(NotifyAncestor);
CASESTRRET(NotifyVirtual);
CASESTRRET(NotifyInferior);
CASESTRRET(NotifyNonlinear);
CASESTRRET(NotifyNonlinearVirtual);
CASESTRRET(NotifyPointer);
CASESTRRET(NotifyPointerRoot);
CASESTRRET(NotifyDetailNone);
}
return "Unknown";
}
static inline void __attribute__((unused))
ev_focus_report(xcb_focus_in_event_t *ev) {
printf(" { mode: %s, detail: %s }\n", ev_focus_mode_name(ev),
ev_focus_detail_name(ev));
}
// === Events ===
/**
* Determine whether we should respond to a <code>FocusIn/Out</code>
* event.
*/
/*
inline static bool
ev_focus_accept(XFocusChangeEvent *ev) {
return NotifyNormal == ev->mode || NotifyUngrab == ev->mode;
}
*/
static inline void
ev_focus_in(session_t *ps, xcb_focus_in_event_t *ev) {
#ifdef DEBUG_EVENTS
ev_focus_report(ev);
#endif
recheck_focus(ps);
}
inline static void
ev_focus_out(session_t *ps, xcb_focus_out_event_t *ev) {
#ifdef DEBUG_EVENTS
ev_focus_report(ev);
#endif
recheck_focus(ps);
}
inline static void
ev_create_notify(session_t *ps, xcb_create_notify_event_t *ev) {
assert(ev->parent == ps->root);
add_win(ps, ev->window, 0);
}
inline static void
ev_configure_notify(session_t *ps, xcb_configure_notify_event_t *ev) {
#ifdef DEBUG_EVENTS
printf(" { send_event: %d, "
" above: %#010x, "
" override_redirect: %d }\n",
ev->event, ev->above_sibling, ev->override_redirect);
#endif
configure_win(ps, ev);
}
inline static void
ev_destroy_notify(session_t *ps, xcb_destroy_notify_event_t *ev) {
destroy_win(ps, ev->window);
}
inline static void
ev_map_notify(session_t *ps, xcb_map_notify_event_t *ev) {
map_win(ps, ev->window);
}
inline static void
ev_unmap_notify(session_t *ps, xcb_unmap_notify_event_t *ev) {
win *w = find_win(ps, ev->window);
if (w)
unmap_win(ps, &w);
}
inline static void
ev_reparent_notify(session_t *ps, xcb_reparent_notify_event_t *ev) {
#ifdef DEBUG_EVENTS
printf_dbg(" { new_parent: %#010x, override_redirect: %d }\n",
ev->parent, ev->override_redirect);
#endif
if (ev->parent == ps->root) {
add_win(ps, ev->window, 0);
} else {
destroy_win(ps, ev->window);
// Reset event mask in case something wrong happens
XSelectInput(ps->dpy, ev->window,
determine_evmask(ps, ev->window, WIN_EVMODE_UNKNOWN));
// Check if the window is an undetected client window
// Firstly, check if it's a known client window
if (!find_toplevel(ps, ev->window)) {
// If not, look for its frame window
win *w_top = find_toplevel2(ps, ev->parent);
// If found, and the client window has not been determined, or its
// frame may not have a correct client, continue
if (w_top && (!w_top->client_win
|| w_top->client_win == w_top->id)) {
// If it has WM_STATE, mark it the client window
if (wid_has_prop(ps, ev->window, ps->atom_client)) {
w_top->wmwin = false;
win_unmark_client(ps, w_top);
win_mark_client(ps, w_top, ev->window);
}
// Otherwise, watch for WM_STATE on it
else {
XSelectInput(ps->dpy, ev->window,
determine_evmask(ps, ev->window, WIN_EVMODE_UNKNOWN)
| PropertyChangeMask);
}
}
}
}
}
inline static void
ev_circulate_notify(session_t *ps, xcb_circulate_notify_event_t *ev) {
circulate_win(ps, ev);
}
inline static void
ev_expose(session_t *ps, xcb_expose_event_t *ev) {
if (ev->window == ps->root || (ps->overlay && ev->window == ps->overlay)) {
int more = ev->count + 1;
if (ps->n_expose == ps->size_expose) {
if (ps->expose_rects) {
ps->expose_rects = realloc(ps->expose_rects,
(ps->size_expose + more) * sizeof(rect_t));
ps->size_expose += more;
} else {
ps->expose_rects = malloc(more * sizeof(rect_t));
ps->size_expose = more;
}
}
ps->expose_rects[ps->n_expose].x1 = ev->x;
ps->expose_rects[ps->n_expose].y1 = ev->y;
ps->expose_rects[ps->n_expose].x2 = ev->x + ev->width;
ps->expose_rects[ps->n_expose].y2 = ev->y + ev->height;
ps->n_expose++;
if (ev->count == 0) {
expose_root(ps, ps->expose_rects, ps->n_expose);
ps->n_expose = 0;
}
}
}
/**
* Update current active window based on EWMH _NET_ACTIVE_WIN.
*
* Does not change anything if we fail to get the attribute or the window
* returned could not be found.
*/
static void
update_ewmh_active_win(session_t *ps) {
// Search for the window
Window wid = wid_get_prop_window(ps, ps->root, ps->atom_ewmh_active_win);
win *w = find_win_all(ps, wid);
// Mark the window focused. No need to unfocus the previous one.
if (w) win_set_focused(ps, w, true);
}
inline static void
ev_property_notify(session_t *ps, xcb_property_notify_event_t *ev) {
#ifdef DEBUG_EVENTS
{
// Print out changed atom
char *name = XGetAtomName(ps->dpy, ev->atom);
printf_dbg(" { atom = %s }\n", name);
cxfree(name);
}
#endif
if (ps->root == ev->window) {
if (ps->o.track_focus && ps->o.use_ewmh_active_win
&& ps->atom_ewmh_active_win == ev->atom) {
update_ewmh_active_win(ps);
}
else {
// Destroy the root "image" if the wallpaper probably changed
for (int p = 0; background_props_str[p]; p++) {
if (ev->atom == get_atom(ps, background_props_str[p])) {
root_damaged(ps);
break;
}
}
}
// Unconcerned about any other proprties on root window
return;
}
// If WM_STATE changes
if (ev->atom == ps->atom_client) {
// Check whether it could be a client window
if (!find_toplevel(ps, ev->window)) {
// Reset event mask anyway
XSelectInput(ps->dpy, ev->window,
determine_evmask(ps, ev->window, WIN_EVMODE_UNKNOWN));
win *w_top = find_toplevel2(ps, ev->window);
// Initialize client_win as early as possible
if (w_top && (!w_top->client_win || w_top->client_win == w_top->id)
&& wid_has_prop(ps, ev->window, ps->atom_client)) {
w_top->wmwin = false;
win_unmark_client(ps, w_top);
win_mark_client(ps, w_top, ev->window);
}
}
}
// If _NET_WM_WINDOW_TYPE changes... God knows why this would happen, but
// there are always some stupid applications. (#144)
if (ev->atom == ps->atom_win_type) {
win *w = NULL;
if ((w = find_toplevel(ps, ev->window)))
win_upd_wintype(ps, w);
}
// If _NET_WM_OPACITY changes
if (ev->atom == ps->atom_opacity) {
win *w = find_win(ps, ev->window) ?: find_toplevel(ps, ev->window);
if (w) {
win_update_opacity_prop(ps, w);
w->flags |= WFLAG_OPCT_CHANGE;
}
}
// If frame extents property changes
if (ps->o.frame_opacity && ev->atom == ps->atom_frame_extents) {
win *w = find_toplevel(ps, ev->window);
if (w) {
win_update_frame_extents(ps, w, ev->window);
// If frame extents change, the window needs repaint
add_damage_from_win(ps, w);
}
}
// If name changes
if (ps->o.track_wdata
&& (ps->atom_name == ev->atom || ps->atom_name_ewmh == ev->atom)) {
win *w = find_toplevel(ps, ev->window);
if (w && 1 == win_get_name(ps, w)) {
win_on_factor_change(ps, w);
}
}
// If class changes
if (ps->o.track_wdata && ps->atom_class == ev->atom) {
win *w = find_toplevel(ps, ev->window);
if (w) {
win_get_class(ps, w);
win_on_factor_change(ps, w);
}
}
// If role changes
if (ps->o.track_wdata && ps->atom_role == ev->atom) {
win *w = find_toplevel(ps, ev->window);
if (w && 1 == win_get_role(ps, w)) {
win_on_factor_change(ps, w);
}
}
// If _COMPTON_SHADOW changes
if (ps->o.respect_prop_shadow && ps->atom_compton_shadow == ev->atom) {
win *w = find_win(ps, ev->window);
if (w)
win_update_prop_shadow(ps, w);
}
// If a leader property changes
if ((ps->o.detect_transient && ps->atom_transient == ev->atom)
|| (ps->o.detect_client_leader && ps->atom_client_leader == ev->atom)) {
win *w = find_toplevel(ps, ev->window);
if (w) {
win_update_leader(ps, w);
}
}
// Check for other atoms we are tracking
for (latom_t *platom = ps->track_atom_lst; platom; platom = platom->next) {
if (platom->atom == ev->atom) {
win *w = find_win(ps, ev->window);
if (!w)
w = find_toplevel(ps, ev->window);
if (w)
win_on_factor_change(ps, w);
break;
}
}
}
inline static void
ev_damage_notify(session_t *ps, xcb_damage_notify_event_t *de) {
/*
if (ps->root == de->drawable) {
root_damaged();
return;
} */
win *w = find_win(ps, de->drawable);
if (!w) return;
repair_win(ps, w);
}
inline static void
ev_shape_notify(session_t *ps, xcb_shape_notify_event_t *ev) {
win *w = find_win(ps, ev->affected_window);
if (!w || IsUnmapped == w->a.map_state) return;
/*
* Empty bounding_shape may indicated an
* unmapped/destroyed window, in which case
* seemingly BadRegion errors would be triggered
* if we attempt to rebuild border_size
*/
// Mark the old border_size as damaged
add_damage(ps, &w->bounding_shape);
win_update_bounding_shape(ps, w);
// Mark the new border_size as damaged
add_damage(ps, &w->bounding_shape);
w->reg_ignore_valid = false;
}
/**
* Handle ScreenChangeNotify events from X RandR extension.
*/
static void
ev_screen_change_notify(session_t *ps,
xcb_randr_screen_change_notify_event_t __attribute__((unused)) *ev) {
if (ps->o.xinerama_shadow_crop)
cxinerama_upd_scrs(ps);
if (ps->o.sw_opti && !ps->o.refresh_rate) {
update_refresh_rate(ps);
if (!ps->refresh_rate) {
fprintf(stderr, "ev_screen_change_notify(): Refresh rate detection "
"failed, --sw-opti disabled.");
ps->o.sw_opti = false;
}
}
}
inline static void
ev_selection_clear(session_t *ps,
xcb_selection_clear_event_t __attribute__((unused)) *ev) {
// The only selection we own is the _NET_WM_CM_Sn selection.
// If we lose that one, we should exit.
fprintf(stderr, "Another composite manager started and "
"took the _NET_WM_CM_Sn selection.\n");
exit(1);
}
/**
* Get a window's name from window ID.
*/
static inline void __attribute__((unused))
ev_window_name(session_t *ps, Window wid, char **name) {
*name = "";
if (wid) {
*name = "(Failed to get title)";
if (ps->root == wid)
*name = "(Root window)";
else if (ps->overlay == wid)
*name = "(Overlay)";
else {
win *w = find_win(ps, wid);
if (!w)
w = find_toplevel(ps, wid);
if (w)
win_get_name(ps, w);
if (w && w->name)
*name = w->name;
else
*name = "unknown";
}
}
}
static void
ev_handle(session_t *ps, xcb_generic_event_t *ev) {
if ((ev->response_type & 0x7f) != KeymapNotify) {
discard_ignore(ps, ev->full_sequence);
}
#ifdef DEBUG_EVENTS
if (ev->response_type != ps->damage_event + XCB_DAMAGE_NOTIFY) {
Window wid = ev_window(ps, ev);
char *window_name = NULL;
ev_window_name(ps, wid, &window_name);
print_timestamp(ps);
printf_errf(" event %10.10s serial %#010x window %#010lx \"%s\"\n",
ev_name(ps, ev), ev_serial(ev), wid, window_name);
}
#endif
// XXX redraw needs to be more fine grained
queue_redraw(ps);
switch (ev->response_type) {
case FocusIn:
ev_focus_in(ps, (xcb_focus_in_event_t *)ev);
break;
case FocusOut:
ev_focus_out(ps, (xcb_focus_out_event_t *)ev);
break;
case CreateNotify:
ev_create_notify(ps, (xcb_create_notify_event_t *)ev);
break;
case ConfigureNotify:
ev_configure_notify(ps, (xcb_configure_notify_event_t *)ev);
break;
case DestroyNotify:
ev_destroy_notify(ps, (xcb_destroy_notify_event_t *)ev);
break;
case MapNotify:
ev_map_notify(ps, (xcb_map_notify_event_t *)ev);
break;
case UnmapNotify:
ev_unmap_notify(ps, (xcb_unmap_notify_event_t *)ev);
break;
case ReparentNotify:
ev_reparent_notify(ps, (xcb_reparent_notify_event_t *)ev);
break;
case CirculateNotify:
ev_circulate_notify(ps, (xcb_circulate_notify_event_t *)ev);
break;
case Expose:
ev_expose(ps, (xcb_expose_event_t *)ev);
break;
case PropertyNotify:
ev_property_notify(ps, (xcb_property_notify_event_t *)ev);
break;
case SelectionClear:
ev_selection_clear(ps, (xcb_selection_clear_event_t *)ev);
break;
case 0:
ev_xcb_error(ps, (xcb_generic_error_t *)ev);
break;
default:
if (ps->shape_exists && ev->response_type == ps->shape_event) {
ev_shape_notify(ps, (xcb_shape_notify_event_t *) ev);
break;
}
if (ps->randr_exists && ev->response_type == (ps->randr_event + XCB_RANDR_SCREEN_CHANGE_NOTIFY)) {
ev_screen_change_notify(ps, (xcb_randr_screen_change_notify_event_t *) ev);
break;
}
if (ps->damage_event + XCB_DAMAGE_NOTIFY == ev->response_type) {
ev_damage_notify(ps, (xcb_damage_notify_event_t *) ev);
break;
}
}
}
// === Main ===
/**
* Print usage text and exit.
*/
static void
usage(int ret) {
#define WARNING_DISABLED " (DISABLED AT COMPILE TIME)"
#define WARNING
static const char *usage_text =
"compton (" COMPTON_VERSION ")\n"
"This is the maintenance fork of compton, please report\n"
"bugs to https://github.com/yshui/compton\n\n"
"usage: compton [options]\n"
"Options:\n"
"\n"
"-d display\n"
" Which display should be managed.\n"
"\n"
"-r radius\n"
" The blur radius for shadows. (default 12)\n"
"\n"
"-o opacity\n"
" The translucency for shadows. (default .75)\n"
"\n"
"-l left-offset\n"
" The left offset for shadows. (default -15)\n"
"\n"
"-t top-offset\n"
" The top offset for shadows. (default -15)\n"
"\n"
"-I fade-in-step\n"
" Opacity change between steps while fading in. (default 0.028)\n"
"\n"
"-O fade-out-step\n"
" Opacity change between steps while fading out. (default 0.03)\n"
"\n"
"-D fade-delta-time\n"
" The time between steps in a fade in milliseconds. (default 10)\n"
"\n"
"-m opacity\n"
" The opacity for menus. (default 1.0)\n"
"\n"
"-c\n"
" Enabled client-side shadows on windows.\n"
"\n"
"-C\n"
" Avoid drawing shadows on dock/panel windows.\n"
"\n"
"-z\n"
" Zero the part of the shadow's mask behind the window.\n"
"\n"
"-f\n"
" Fade windows in/out when opening/closing and when opacity\n"
" changes, unless --no-fading-openclose is used.\n"
"\n"
"-F\n"
" Equals to -f. Deprecated.\n"
"\n"
"-i opacity\n"
" Opacity of inactive windows. (0.1 - 1.0)\n"
"\n"
"-e opacity\n"
" Opacity of window titlebars and borders. (0.1 - 1.0)\n"
"\n"
"-G\n"
" Don't draw shadows on DND windows\n"
"\n"
"-b\n"
" Daemonize process.\n"
"\n"
"-S\n"
" Enable synchronous operation (for debugging).\n"
"\n"
"--show-all-xerrors\n"
" Show all X errors (for debugging).\n"
"\n"
#undef WARNING
#ifndef CONFIG_LIBCONFIG
#define WARNING WARNING_DISABLED
#else
#define WARNING
#endif
"--config path\n"
" Look for configuration file at the path. Use /dev/null to avoid\n"
" loading configuration file." WARNING "\n"
"\n"
"--write-pid-path path\n"
" Write process ID to a file.\n"
"\n"
"--shadow-red value\n"
" Red color value of shadow (0.0 - 1.0, defaults to 0).\n"
"\n"
"--shadow-green value\n"
" Green color value of shadow (0.0 - 1.0, defaults to 0).\n"
"\n"
"--shadow-blue value\n"
" Blue color value of shadow (0.0 - 1.0, defaults to 0).\n"
"\n"
"--inactive-opacity-override\n"
" Inactive opacity set by -i overrides value of _NET_WM_OPACITY.\n"
"\n"
"--inactive-dim value\n"
" Dim inactive windows. (0.0 - 1.0, defaults to 0)\n"
"\n"
"--active-opacity opacity\n"
" Default opacity for active windows. (0.0 - 1.0)\n"
"\n"
"--mark-wmwin-focused\n"
" Try to detect WM windows and mark them as active.\n"
"\n"
"--shadow-exclude condition\n"
" Exclude conditions for shadows.\n"
"\n"
"--fade-exclude condition\n"
" Exclude conditions for fading.\n"
"\n"
"--mark-ovredir-focused\n"
" Mark windows that have no WM frame as active.\n"
"\n"
"--no-fading-openclose\n"
" Do not fade on window open/close.\n"
"\n"
"--no-fading-destroyed-argb\n"
" Do not fade destroyed ARGB windows with WM frame. Workaround of bugs\n"
" in Openbox, Fluxbox, etc.\n"
"\n"
"--shadow-ignore-shaped\n"
" Do not paint shadows on shaped windows. (Deprecated, use\n"
" --shadow-exclude \'bounding_shaped\' or\n"
" --shadow-exclude \'bounding_shaped && !rounded_corners\' instead.)\n"
"\n"
"--detect-rounded-corners\n"
" Try to detect windows with rounded corners and don't consider\n"
" them shaped windows. Affects --shadow-ignore-shaped,\n"
" --unredir-if-possible, and possibly others. You need to turn this\n"
" on manually if you want to match against rounded_corners in\n"
" conditions.\n"
"\n"
"--detect-client-opacity\n"
" Detect _NET_WM_OPACITY on client windows, useful for window\n"
" managers not passing _NET_WM_OPACITY of client windows to frame\n"
" windows.\n"
"\n"
"--refresh-rate val\n"
" Specify refresh rate of the screen. If not specified or 0, compton\n"
" will try detecting this with X RandR extension.\n"
"\n"
"--vsync vsync-method\n"
" Set VSync method. There are (up to) 5 VSync methods currently\n"
" available:\n"
" none = No VSync\n"
#undef WARNING
#ifndef CONFIG_VSYNC_DRM
#define WARNING WARNING_DISABLED
#else
#define WARNING
#endif
" drm = VSync with DRM_IOCTL_WAIT_VBLANK. May only work on some\n"
" (DRI-based) drivers." WARNING "\n"
#undef WARNING
#ifndef CONFIG_OPENGL
#define WARNING WARNING_DISABLED
#else
#define WARNING
#endif
" opengl = Try to VSync with SGI_video_sync OpenGL extension. Only\n"
" work on some drivers." WARNING"\n"
" opengl-oml = Try to VSync with OML_sync_control OpenGL extension.\n"
" Only work on some drivers." WARNING"\n"
" opengl-swc = Try to VSync with SGI_swap_control OpenGL extension.\n"
" Only work on some drivers. Works only with GLX backend." WARNING "\n"
" opengl-mswc = Try to VSync with MESA_swap_control OpenGL\n"
" extension. Basically the same as opengl-swc above, except the\n"
" extension we use." WARNING "\n"
"\n"
"--vsync-aggressive\n"
" Attempt to send painting request before VBlank and do XFlush()\n"
" during VBlank. This switch may be lifted out at any moment.\n"
"\n"
"--alpha-step val\n"
" X Render backend: Step for pregenerating alpha pictures. \n"
" 0.01 - 1.0. Defaults to 0.03.\n"
"\n"
"--dbe\n"
" Enable DBE painting mode, intended to use with VSync to\n"
" (hopefully) eliminate tearing.\n"
"\n"
"--paint-on-overlay\n"
" Painting on X Composite overlay window.\n"
"\n"
"--sw-opti\n"
" Limit compton to repaint at most once every 1 / refresh_rate\n"
" second to boost performance.\n"
"\n"
"--use-ewmh-active-win\n"
" Use _NET_WM_ACTIVE_WINDOW on the root window to determine which\n"
" window is focused instead of using FocusIn/Out events.\n"
"\n"
"--respect-prop-shadow\n"
" Respect _COMPTON_SHADOW. This a prototype-level feature, which\n"
" you must not rely on.\n"
"\n"
"--unredir-if-possible\n"
" Unredirect all windows if a full-screen opaque window is\n"
" detected, to maximize performance for full-screen windows.\n"
"\n"
"--unredir-if-possible-delay ms\n"
" Delay before unredirecting the window, in milliseconds.\n"
" Defaults to 0.\n"
"\n"
"--unredir-if-possible-exclude condition\n"
" Conditions of windows that shouldn't be considered full-screen\n"
" for unredirecting screen.\n"
"\n"
"--focus-exclude condition\n"
" Specify a list of conditions of windows that should always be\n"
" considered focused.\n"
"\n"
"--inactive-dim-fixed\n"
" Use fixed inactive dim value.\n"
"\n"
"--detect-transient\n"
" Use WM_TRANSIENT_FOR to group windows, and consider windows in\n"
" the same group focused at the same time.\n"
"\n"
"--detect-client-leader\n"
" Use WM_CLIENT_LEADER to group windows, and consider windows in\n"
" the same group focused at the same time. WM_TRANSIENT_FOR has\n"
" higher priority if --detect-transient is enabled, too.\n"
"\n"
"--blur-background\n"
" Blur background of semi-transparent / ARGB windows. Bad in\n"
" performance. The switch name may change without prior\n"
" notifications.\n"
"\n"
"--blur-background-frame\n"
" Blur background of windows when the window frame is not opaque.\n"
" Implies --blur-background. Bad in performance. The switch name\n"
" may change.\n"
"\n"
"--blur-background-fixed\n"
" Use fixed blur strength instead of adjusting according to window\n"
" opacity.\n"
"\n"
"--blur-kern matrix\n"
" Specify the blur convolution kernel, with the following format:\n"
" WIDTH,HEIGHT,ELE1,ELE2,ELE3,ELE4,ELE5...\n"
" The element in the center must not be included, it will be forever\n"
" 1.0 or changing based on opacity, depending on whether you have\n"
" --blur-background-fixed.\n"
" A 7x7 Gaussian blur kernel looks like:\n"
" --blur-kern '7,7,0.000003,0.000102,0.000849,0.001723,0.000849,0.000102,0.000003,0.000102,0.003494,0.029143,0.059106,0.029143,0.003494,0.000102,0.000849,0.029143,0.243117,0.493069,0.243117,0.029143,0.000849,0.001723,0.059106,0.493069,0.493069,0.059106,0.001723,0.000849,0.029143,0.243117,0.493069,0.243117,0.029143,0.000849,0.000102,0.003494,0.029143,0.059106,0.029143,0.003494,0.000102,0.000003,0.000102,0.000849,0.001723,0.000849,0.000102,0.000003'\n"
" Up to 4 blur kernels may be specified, separated with semicolon, for\n"
" multi-pass blur.\n"
" May also be one the predefined kernels: 3x3box (default), 5x5box,\n"
" 7x7box, 3x3gaussian, 5x5gaussian, 7x7gaussian, 9x9gaussian,\n"
" 11x11gaussian.\n"
"\n"
"--blur-background-exclude condition\n"
" Exclude conditions for background blur.\n"
"\n"
"--resize-damage integer\n"
" Resize damaged region by a specific number of pixels. A positive\n"
" value enlarges it while a negative one shrinks it. Useful for\n"
" fixing the line corruption issues of blur. May or may not\n"
" work with --glx-no-stencil. Shrinking doesn't function correctly.\n"
"\n"
"--invert-color-include condition\n"
" Specify a list of conditions of windows that should be painted with\n"
" inverted color. Resource-hogging, and is not well tested.\n"
"\n"
"--opacity-rule opacity:condition\n"
" Specify a list of opacity rules, in the format \"PERCENT:PATTERN\",\n"
" like \'50:name *= \"Firefox\"'. compton-trans is recommended over\n"
" this. Note we do not distinguish 100% and unset, and we don't make\n"
" any guarantee about possible conflicts with other programs that set\n"
" _NET_WM_WINDOW_OPACITY on frame or client windows.\n"
"\n"
"--shadow-exclude-reg geometry\n"
" Specify a X geometry that describes the region in which shadow\n"
" should not be painted in, such as a dock window region.\n"
" Use --shadow-exclude-reg \'x10+0-0\', for example, if the 10 pixels\n"
" on the bottom of the screen should not have shadows painted on.\n"
#undef WARNING
#ifndef CONFIG_XINERAMA
#define WARNING WARNING_DISABLED
#else
#define WARNING
#endif
"\n"
"--xinerama-shadow-crop\n"
" Crop shadow of a window fully on a particular Xinerama screen to the\n"
" screen." WARNING "\n"
"\n"
#undef WARNING
#ifndef CONFIG_OPENGL
#define WARNING "(GLX BACKENDS DISABLED AT COMPILE TIME)"
#else
#define WARNING
#endif
"--backend backend\n"
" Choose backend. Possible choices are xrender, glx, and\n"
" xr_glx_hybrid" WARNING ".\n"
"\n"
"--glx-no-stencil\n"
" GLX backend: Avoid using stencil buffer. Might cause issues\n"
" when rendering transparent content. My tests show a 15% performance\n"
" boost.\n"
"\n"
"--glx-no-rebind-pixmap\n"
" GLX backend: Avoid rebinding pixmap on window damage. Probably\n"
" could improve performance on rapid window content changes, but is\n"
" known to break things on some drivers (LLVMpipe, xf86-video-intel,\n"
" etc.).\n"
"\n"
"--glx-swap-method undefined/copy/exchange/3/4/5/6/buffer-age\n"
" GLX backend: GLX buffer swap method we assume. Could be\n"
" undefined (0), copy (1), exchange (2), 3-6, or buffer-age (-1).\n"
" \"undefined\" is the slowest and the safest, and the default value.\n"
" 1 is fastest, but may fail on some drivers, 2-6 are gradually slower\n"
" but safer (6 is still faster than 0). -1 means auto-detect using\n"
" GLX_EXT_buffer_age, supported by some drivers. \n"
"\n"
"--glx-use-gpushader4\n"
" GLX backend: Use GL_EXT_gpu_shader4 for some optimization on blur\n"
" GLSL code. My tests on GTX 670 show no noticeable effect.\n"
"\n"
"--xrender-sync\n"
" Attempt to synchronize client applications' draw calls with XSync(),\n"
" used on GLX backend to ensure up-to-date window content is painted.\n"
#undef WARNING
#ifndef CONFIG_XSYNC
#define WARNING WARNING_DISABLED
#else
#define WARNING
#endif
"\n"
"--xrender-sync-fence\n"
" Additionally use X Sync fence to sync clients' draw calls. Needed\n"
" on nvidia-drivers with GLX backend for some users." WARNING "\n"
"\n"
"--glx-fshader-win shader\n"
" GLX backend: Use specified GLSL fragment shader for rendering window\n"
" contents.\n"
"\n"
"--force-win-blend\n"
" Force all windows to be painted with blending. Useful if you have a\n"
" --glx-fshader-win that could turn opaque pixels transparent.\n"
"\n"
#undef WARNING
#ifndef CONFIG_DBUS
#define WARNING WARNING_DISABLED
#else
#define WARNING
#endif
"--dbus\n"
" Enable remote control via D-Bus. See the D-BUS API section in the\n"
" man page for more details." WARNING "\n"
"\n"
"--benchmark cycles\n"
" Benchmark mode. Repeatedly paint until reaching the specified cycles.\n"
"\n"
"--benchmark-wid window-id\n"
" Specify window ID to repaint in benchmark mode. If omitted or is 0,\n"
" the whole screen is repainted.\n"
;
FILE *f = (ret ? stderr: stdout);
fputs(usage_text, f);
#undef WARNING
#undef WARNING_DISABLED
exit(ret);
}
/**
* Register a window as symbol, and initialize GLX context if wanted.
*/
static bool
register_cm(session_t *ps) {
assert(!ps->reg_win);
xcb_connection_t *c = XGetXCBConnection(ps->dpy);
ps->reg_win = XCreateSimpleWindow(ps->dpy, ps->root, 0, 0, 1, 1, 0,
None, None);
if (!ps->reg_win) {
printf_errf("(): Failed to create window.");
return false;
}
// Unredirect the window if it's redirected, just in case
if (ps->redirected)
xcb_composite_unredirect_window(c, ps->reg_win, XCB_COMPOSITE_REDIRECT_MANUAL);
{
XClassHint *h = XAllocClassHint();
if (h) {
h->res_name = "compton";
h->res_class = "xcompmgr";
}
Xutf8SetWMProperties(ps->dpy, ps->reg_win, "xcompmgr", "xcompmgr",
NULL, 0, NULL, NULL, h);
cxfree(h);
}
// Set _NET_WM_PID
{
long pid = getpid();
if (!XChangeProperty(ps->dpy, ps->reg_win,
get_atom(ps, "_NET_WM_PID"), XCB_ATOM_CARDINAL, 32, PropModeReplace,
(unsigned char *) &pid, 1)) {
printf_errf("(): Failed to set _NET_WM_PID.");
}
}
// Set COMPTON_VERSION
if (!wid_set_text_prop(ps, ps->reg_win, get_atom(ps, "COMPTON_VERSION"), COMPTON_VERSION)) {
printf_errf("(): Failed to set COMPTON_VERSION.");
}
// Acquire X Selection _NET_WM_CM_S?
if (!ps->o.no_x_selection) {
unsigned len = strlen(REGISTER_PROP) + 2;
int s = ps->scr;
Atom atom;
while (s >= 10) {
++len;
s /= 10;
}
char *buf = malloc(len);
snprintf(buf, len, REGISTER_PROP "%d", ps->scr);
buf[len - 1] = '\0';
atom = get_atom(ps, buf);
if (XGetSelectionOwner(ps->dpy, atom) != None) {
fprintf(stderr, "Another composite manager is already running\n");
return false;
}
XSetSelectionOwner(ps->dpy, atom, ps->reg_win, 0);
free(buf);
}
return true;
}
/**
* Reopen streams for logging.
*/
static bool
ostream_reopen(session_t *ps, const char *path) {
if (!path)
path = ps->o.logpath;
if (!path)
path = "/dev/null";
bool success = freopen(path, "a", stdout);
success = freopen(path, "a", stderr) && success;
if (!success)
printf_errfq(1, "(%s): freopen() failed.", path);
return success;
}
/**
* Fork program to background and disable all I/O streams.
*/
static inline bool
fork_after(session_t *ps) {
if (getppid() == 1)
return true;
#ifdef CONFIG_OPENGL
// GLX context must be released and reattached on fork
if (glx_has_context(ps) && !glXMakeCurrent(ps->dpy, None, NULL)) {
printf_errf("(): Failed to detach GLx context.");
return false;
}
#endif
int pid = fork();
if (-1 == pid) {
printf_errf("(): fork() failed.");
return false;
}
if (pid > 0) _exit(0);
setsid();
#ifdef CONFIG_OPENGL
if (glx_has_context(ps)
&& !glXMakeCurrent(ps->dpy, get_tgt_window(ps), ps->psglx->context)) {
printf_errf("(): Failed to make GLX context current.");
return false;
}
#endif
// Mainly to suppress the _FORTIFY_SOURCE warning
bool success = freopen("/dev/null", "r", stdin);
if (!success) {
printf_errf("(): freopen() failed.");
return false;
}
return success;
}
/**
* Write PID to a file.
*/
static inline bool
write_pid(session_t *ps) {
if (!ps->o.write_pid_path)
return true;
FILE *f = fopen(ps->o.write_pid_path, "w");
if (unlikely(!f)) {
printf_errf("(): Failed to write PID to \"%s\".", ps->o.write_pid_path);
return false;
}
fprintf(f, "%ld\n", (long) getpid());
fclose(f);
return true;
}
/**
* Process arguments and configuration files.
*/
static void
get_cfg(session_t *ps, int argc, char *const *argv, bool first_pass) {
static const char *shortopts = "D:I:O:d:r:o:m:l:t:i:e:hscnfFCaSzGb";
static const struct option longopts[] = {
{ "help", no_argument, NULL, 'h' },
{ "config", required_argument, NULL, 256 },
{ "shadow-radius", required_argument, NULL, 'r' },
{ "shadow-opacity", required_argument, NULL, 'o' },
{ "shadow-offset-x", required_argument, NULL, 'l' },
{ "shadow-offset-y", required_argument, NULL, 't' },
{ "fade-in-step", required_argument, NULL, 'I' },
{ "fade-out-step", required_argument, NULL, 'O' },
{ "fade-delta", required_argument, NULL, 'D' },
{ "menu-opacity", required_argument, NULL, 'm' },
{ "shadow", no_argument, NULL, 'c' },
{ "no-dock-shadow", no_argument, NULL, 'C' },
{ "clear-shadow", no_argument, NULL, 'z' },
{ "fading", no_argument, NULL, 'f' },
{ "inactive-opacity", required_argument, NULL, 'i' },
{ "frame-opacity", required_argument, NULL, 'e' },
{ "daemon", no_argument, NULL, 'b' },
{ "no-dnd-shadow", no_argument, NULL, 'G' },
{ "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 },
{ "mark-ovredir-focused", no_argument, NULL, 264 },
{ "no-fading-openclose", no_argument, NULL, 265 },
{ "shadow-ignore-shaped", no_argument, NULL, 266 },
{ "detect-rounded-corners", no_argument, NULL, 267 },
{ "detect-client-opacity", no_argument, NULL, 268 },
{ "refresh-rate", required_argument, NULL, 269 },
{ "vsync", required_argument, NULL, 270 },
{ "alpha-step", required_argument, NULL, 271 },
{ "dbe", no_argument, NULL, 272 },
{ "paint-on-overlay", no_argument, NULL, 273 },
{ "sw-opti", no_argument, NULL, 274 },
{ "vsync-aggressive", no_argument, NULL, 275 },
{ "use-ewmh-active-win", no_argument, NULL, 276 },
{ "respect-prop-shadow", no_argument, NULL, 277 },
{ "unredir-if-possible", no_argument, NULL, 278 },
{ "focus-exclude", required_argument, NULL, 279 },
{ "inactive-dim-fixed", no_argument, NULL, 280 },
{ "detect-transient", no_argument, NULL, 281 },
{ "detect-client-leader", no_argument, NULL, 282 },
{ "blur-background", no_argument, NULL, 283 },
{ "blur-background-frame", no_argument, NULL, 284 },
{ "blur-background-fixed", no_argument, NULL, 285 },
{ "dbus", no_argument, NULL, 286 },
{ "logpath", required_argument, NULL, 287 },
{ "invert-color-include", required_argument, NULL, 288 },
{ "opengl", no_argument, NULL, 289 },
{ "backend", required_argument, NULL, 290 },
{ "glx-no-stencil", no_argument, NULL, 291 },
{ "glx-copy-from-front", no_argument, NULL, 292 },
{ "benchmark", required_argument, NULL, 293 },
{ "benchmark-wid", required_argument, NULL, 294 },
{ "glx-use-copysubbuffermesa", no_argument, NULL, 295 },
{ "blur-background-exclude", required_argument, NULL, 296 },
{ "active-opacity", required_argument, NULL, 297 },
{ "glx-no-rebind-pixmap", no_argument, NULL, 298 },
{ "glx-swap-method", required_argument, NULL, 299 },
{ "fade-exclude", required_argument, NULL, 300 },
{ "blur-kern", required_argument, NULL, 301 },
{ "resize-damage", required_argument, NULL, 302 },
{ "glx-use-gpushader4", no_argument, NULL, 303 },
{ "opacity-rule", required_argument, NULL, 304 },
{ "shadow-exclude-reg", required_argument, NULL, 305 },
{ "paint-exclude", required_argument, NULL, 306 },
{ "xinerama-shadow-crop", no_argument, NULL, 307 },
{ "unredir-if-possible-exclude", required_argument, NULL, 308 },
{ "unredir-if-possible-delay", required_argument, NULL, 309 },
{ "write-pid-path", required_argument, NULL, 310 },
{ "vsync-use-glfinish", no_argument, NULL, 311 },
{ "xrender-sync", no_argument, NULL, 312 },
{ "xrender-sync-fence", no_argument, NULL, 313 },
{ "show-all-xerrors", no_argument, NULL, 314 },
{ "no-fading-destroyed-argb", no_argument, NULL, 315 },
{ "force-win-blend", no_argument, NULL, 316 },
{ "glx-fshader-win", required_argument, NULL, 317 },
{ "version", no_argument, NULL, 318 },
{ "no-x-selection", no_argument, NULL, 319 },
{ "no-name-pixmap", no_argument, NULL, 320 },
{ "reredir-on-root-change", no_argument, NULL, 731 },
{ "glx-reinit-on-root-change", no_argument, NULL, 732 },
// Must terminate with a NULL entry
{ NULL, 0, NULL, 0 },
};
int o = 0, longopt_idx = -1, i = 0;
if (first_pass) {
// Pre-parse the commandline arguments to check for --config and invalid
// switches
// Must reset optind to 0 here in case we reread the commandline
// arguments
optind = 1;
while (-1 !=
(o = getopt_long(argc, argv, shortopts, longopts, &longopt_idx))) {
if (256 == o)
ps->o.config_file = mstrcpy(optarg);
else if ('d' == o)
ps->o.display = mstrcpy(optarg);
else if ('S' == o)
ps->o.synchronize = true;
else if (314 == o)
ps->o.show_all_xerrors = true;
else if (318 == o) {
printf("%s\n", COMPTON_VERSION);
exit(0);
}
else if (320 == o)
ps->o.no_name_pixmap = true;
else if ('?' == o || ':' == o)
usage(1);
}
// Check for abundant positional arguments
if (optind < argc)
printf_errfq(1, "(): compton doesn't accept positional arguments.");
return;
}
struct options_tmp cfgtmp = {
.no_dock_shadow = false,
.no_dnd_shadow = false,
.menu_opacity = NAN,
};
bool shadow_enable = false, fading_enable = false;
char *lc_numeric_old = mstrcpy(setlocale(LC_NUMERIC, NULL));
for (i = 0; i < NUM_WINTYPES; ++i) {
ps->o.wintype_fade[i] = false;
ps->o.wintype_shadow[i] = false;
ps->o.wintype_opacity[i] = NAN;
}
// Enforce LC_NUMERIC locale "C" here to make sure dots are recognized
// instead of commas in atof().
setlocale(LC_NUMERIC, "C");
parse_config(ps, &cfgtmp);
// Parse commandline arguments. Range checking will be done later.
optind = 1;
while (-1 !=
(o = getopt_long(argc, argv, shortopts, longopts, &longopt_idx))) {
long val = 0;
switch (o) {
#define P_CASEBOOL(idx, option) case idx: ps->o.option = true; break
#define P_CASELONG(idx, option) \
case idx: \
if (!parse_long(optarg, &val)) exit(1); \
ps->o.option = val; \
break
// Short options
case 'h':
usage(0);
break;
case 'd':
case 'S':
case 314:
case 318:
case 320:
break;
P_CASELONG('D', fade_delta);
case 'I':
ps->o.fade_in_step = normalize_d(atof(optarg)) * OPAQUE;
break;
case 'O':
ps->o.fade_out_step = normalize_d(atof(optarg)) * OPAQUE;
break;
case 'c':
shadow_enable = true;
break;
case 'C':
cfgtmp.no_dock_shadow = true;
break;
case 'G':
cfgtmp.no_dnd_shadow = true;
break;
case 'm':
cfgtmp.menu_opacity = atof(optarg);
break;
case 'f':
case 'F':
fading_enable = true;
break;
P_CASELONG('r', shadow_radius);
case 'o':
ps->o.shadow_opacity = atof(optarg);
break;
P_CASELONG('l', shadow_offset_x);
P_CASELONG('t', shadow_offset_y);
case 'i':
ps->o.inactive_opacity = (normalize_d(atof(optarg)) * OPAQUE);
break;
case 'e':
ps->o.frame_opacity = atof(optarg);
break;
case 'z':
printf_errf("(): clear-shadow is removed, shadows are automatically cleared now.");
break;
case 'n':
case 'a':
case 's':
printf_errfq(1, "(): -n, -a, and -s have been removed.");
break;
P_CASEBOOL('b', fork_after_register);
// Long options
case 256:
// --config
break;
case 257:
// --shadow-red
ps->o.shadow_red = atof(optarg);
break;
case 258:
// --shadow-green
ps->o.shadow_green = atof(optarg);
break;
case 259:
// --shadow-blue
ps->o.shadow_blue = atof(optarg);
break;
P_CASEBOOL(260, inactive_opacity_override);
case 261:
// --inactive-dim
ps->o.inactive_dim = atof(optarg);
break;
P_CASEBOOL(262, mark_wmwin_focused);
case 263:
// --shadow-exclude
condlst_add(ps, &ps->o.shadow_blacklist, optarg);
break;
P_CASEBOOL(264, mark_ovredir_focused);
P_CASEBOOL(265, no_fading_openclose);
P_CASEBOOL(266, shadow_ignore_shaped);
P_CASEBOOL(267, detect_rounded_corners);
P_CASEBOOL(268, detect_client_opacity);
P_CASELONG(269, refresh_rate);
case 270:
// --vsync
if (!parse_vsync(ps, optarg))
exit(1);
break;
case 271:
// --alpha-step
ps->o.alpha_step = atof(optarg);
break;
P_CASEBOOL(272, dbe);
P_CASEBOOL(273, paint_on_overlay);
P_CASEBOOL(274, sw_opti);
P_CASEBOOL(275, vsync_aggressive);
P_CASEBOOL(276, use_ewmh_active_win);
P_CASEBOOL(277, respect_prop_shadow);
P_CASEBOOL(278, unredir_if_possible);
case 279:
// --focus-exclude
condlst_add(ps, &ps->o.focus_blacklist, optarg);
break;
P_CASEBOOL(280, inactive_dim_fixed);
P_CASEBOOL(281, detect_transient);
P_CASEBOOL(282, detect_client_leader);
P_CASEBOOL(283, blur_background);
P_CASEBOOL(284, blur_background_frame);
P_CASEBOOL(285, blur_background_fixed);
P_CASEBOOL(286, dbus);
case 287:
// --logpath
ps->o.logpath = mstrcpy(optarg);
break;
case 288:
// --invert-color-include
condlst_add(ps, &ps->o.invert_color_list, optarg);
break;
case 289:
// --opengl
ps->o.backend = BKEND_GLX;
break;
case 290:
// --backend
if (!parse_backend(ps, optarg))
exit(1);
break;
P_CASEBOOL(291, glx_no_stencil);
case 292:
printf_errf("(): --glx-copy-from-front is deprecated");
break;
P_CASELONG(293, benchmark);
case 294:
// --benchmark-wid
ps->o.benchmark_wid = strtol(optarg, NULL, 0);
break;
case 295:
printf_errf("(): --glx-use-copysubbuffermesa is deprecated");
break;
case 296:
// --blur-background-exclude
condlst_add(ps, &ps->o.blur_background_blacklist, optarg);
break;
case 297:
// --active-opacity
ps->o.active_opacity = (normalize_d(atof(optarg)) * OPAQUE);
break;
P_CASEBOOL(298, glx_no_rebind_pixmap);
case 299:
// --glx-swap-method
if (!parse_glx_swap_method(ps, optarg))
exit(1);
break;
case 300:
// --fade-exclude
condlst_add(ps, &ps->o.fade_blacklist, optarg);
break;
case 301:
// --blur-kern
if (!parse_conv_kern_lst(ps, optarg, ps->o.blur_kerns, MAX_BLUR_PASS))
exit(1);
break;
P_CASELONG(302, resize_damage);
P_CASEBOOL(303, glx_use_gpushader4);
case 304:
// --opacity-rule
if (!parse_rule_opacity(ps, optarg))
exit(1);
break;
case 305:
// --shadow-exclude-reg
ps->o.shadow_exclude_reg_str = strdup(optarg);
printf_err("--shadow-exclude-reg is deprecated.\n"
"You are likely better off using --shadow-exclude anyway");
break;
case 306:
// --paint-exclude
condlst_add(ps, &ps->o.paint_blacklist, optarg);
break;
P_CASEBOOL(307, xinerama_shadow_crop);
case 308:
// --unredir-if-possible-exclude
condlst_add(ps, &ps->o.unredir_if_possible_blacklist, optarg);
break;
P_CASELONG(309, unredir_if_possible_delay);
case 310:
// --write-pid-path
ps->o.write_pid_path = mstrcpy(optarg);
break;
P_CASEBOOL(311, vsync_use_glfinish);
P_CASEBOOL(312, xrender_sync);
P_CASEBOOL(313, xrender_sync_fence);
P_CASEBOOL(315, no_fading_destroyed_argb);
P_CASEBOOL(316, force_win_blend);
case 317:
ps->o.glx_fshader_win_str = mstrcpy(optarg);
break;
P_CASEBOOL(319, no_x_selection);
P_CASEBOOL(731, reredir_on_root_change);
P_CASEBOOL(732, glx_reinit_on_root_change);
default:
usage(1);
break;
#undef P_CASEBOOL
}
}
// Restore LC_NUMERIC
setlocale(LC_NUMERIC, lc_numeric_old);
free(lc_numeric_old);
// Range checking and option assignments
ps->o.fade_delta = max_i(ps->o.fade_delta, 1);
ps->o.shadow_radius = max_i(ps->o.shadow_radius, 1);
ps->o.shadow_red = normalize_d(ps->o.shadow_red);
ps->o.shadow_green = normalize_d(ps->o.shadow_green);
ps->o.shadow_blue = normalize_d(ps->o.shadow_blue);
ps->o.inactive_dim = normalize_d(ps->o.inactive_dim);
ps->o.frame_opacity = normalize_d(ps->o.frame_opacity);
ps->o.shadow_opacity = normalize_d(ps->o.shadow_opacity);
cfgtmp.menu_opacity = normalize_d(cfgtmp.menu_opacity);
ps->o.refresh_rate = normalize_i_range(ps->o.refresh_rate, 0, 300);
ps->o.alpha_step = normalize_d_range(ps->o.alpha_step, 0.01, 1.0);
if (shadow_enable)
wintype_arr_enable(ps->o.wintype_shadow);
ps->o.wintype_shadow[WINTYPE_DESKTOP] = false;
if (cfgtmp.no_dock_shadow)
ps->o.wintype_shadow[WINTYPE_DOCK] = false;
if (cfgtmp.no_dnd_shadow)
ps->o.wintype_shadow[WINTYPE_DND] = false;
if (fading_enable)
wintype_arr_enable(ps->o.wintype_fade);
if (!isnan(cfgtmp.menu_opacity)) {
ps->o.wintype_opacity[WINTYPE_DROPDOWN_MENU] = cfgtmp.menu_opacity;
ps->o.wintype_opacity[WINTYPE_POPUP_MENU] = cfgtmp.menu_opacity;
}
// --blur-background-frame implies --blur-background
if (ps->o.blur_background_frame)
ps->o.blur_background = true;
if (ps->o.xrender_sync_fence)
ps->o.xrender_sync = true;
// Other variables determined by options
// Determine whether we need to track focus changes
if (ps->o.inactive_opacity != ps->o.active_opacity ||
ps->o.inactive_dim) {
ps->o.track_focus = true;
}
// Determine whether we track window grouping
if (ps->o.detect_transient || ps->o.detect_client_leader) {
ps->o.track_leader = true;
}
// Fill default blur kernel
if (ps->o.blur_background && !ps->o.blur_kerns[0]) {
// Convolution filter parameter (box blur)
// gaussian or binomial filters are definitely superior, yet looks
// like they aren't supported as of xorg-server-1.13.0
static const xcb_render_fixed_t convolution_blur[] = {
// Must convert to XFixed with DOUBLE_TO_XFIXED()
// Matrix size
DOUBLE_TO_XFIXED(3), DOUBLE_TO_XFIXED(3),
// Matrix
DOUBLE_TO_XFIXED(1), DOUBLE_TO_XFIXED(1), DOUBLE_TO_XFIXED(1),
DOUBLE_TO_XFIXED(1), DOUBLE_TO_XFIXED(1), DOUBLE_TO_XFIXED(1),
DOUBLE_TO_XFIXED(1), DOUBLE_TO_XFIXED(1), DOUBLE_TO_XFIXED(1),
};
ps->o.blur_kerns[0] = malloc(sizeof(convolution_blur));
if (!ps->o.blur_kerns[0]) {
printf_errf("(): Failed to allocate memory for convolution kernel.");
exit(1);
}
memcpy(ps->o.blur_kerns[0], &convolution_blur, sizeof(convolution_blur));
}
rebuild_shadow_exclude_reg(ps);
if (ps->o.resize_damage < 0)
printf_errf("(): Negative --resize-damage does not work correctly.");
}
/**
* Fetch all required atoms and save them to a session.
*/
static void
init_atoms(session_t *ps) {
ps->atom_opacity = get_atom(ps, "_NET_WM_WINDOW_OPACITY");
ps->atom_frame_extents = get_atom(ps, "_NET_FRAME_EXTENTS");
ps->atom_client = get_atom(ps, "WM_STATE");
ps->atom_name = XCB_ATOM_WM_NAME;
ps->atom_name_ewmh = get_atom(ps, "_NET_WM_NAME");
ps->atom_class = XCB_ATOM_WM_CLASS;
ps->atom_role = get_atom(ps, "WM_WINDOW_ROLE");
ps->atom_transient = XCB_ATOM_WM_TRANSIENT_FOR;
ps->atom_client_leader = get_atom(ps, "WM_CLIENT_LEADER");
ps->atom_ewmh_active_win = get_atom(ps, "_NET_ACTIVE_WINDOW");
ps->atom_compton_shadow = get_atom(ps, "_COMPTON_SHADOW");
ps->atom_win_type = get_atom(ps, "_NET_WM_WINDOW_TYPE");
ps->atoms_wintypes[WINTYPE_UNKNOWN] = 0;
ps->atoms_wintypes[WINTYPE_DESKTOP] = get_atom(ps,
"_NET_WM_WINDOW_TYPE_DESKTOP");
ps->atoms_wintypes[WINTYPE_DOCK] = get_atom(ps,
"_NET_WM_WINDOW_TYPE_DOCK");
ps->atoms_wintypes[WINTYPE_TOOLBAR] = get_atom(ps,
"_NET_WM_WINDOW_TYPE_TOOLBAR");
ps->atoms_wintypes[WINTYPE_MENU] = get_atom(ps,
"_NET_WM_WINDOW_TYPE_MENU");
ps->atoms_wintypes[WINTYPE_UTILITY] = get_atom(ps,
"_NET_WM_WINDOW_TYPE_UTILITY");
ps->atoms_wintypes[WINTYPE_SPLASH] = get_atom(ps,
"_NET_WM_WINDOW_TYPE_SPLASH");
ps->atoms_wintypes[WINTYPE_DIALOG] = get_atom(ps,
"_NET_WM_WINDOW_TYPE_DIALOG");
ps->atoms_wintypes[WINTYPE_NORMAL] = get_atom(ps,
"_NET_WM_WINDOW_TYPE_NORMAL");
ps->atoms_wintypes[WINTYPE_DROPDOWN_MENU] = get_atom(ps,
"_NET_WM_WINDOW_TYPE_DROPDOWN_MENU");
ps->atoms_wintypes[WINTYPE_POPUP_MENU] = get_atom(ps,
"_NET_WM_WINDOW_TYPE_POPUP_MENU");
ps->atoms_wintypes[WINTYPE_TOOLTIP] = get_atom(ps,
"_NET_WM_WINDOW_TYPE_TOOLTIP");
ps->atoms_wintypes[WINTYPE_NOTIFY] = get_atom(ps,
"_NET_WM_WINDOW_TYPE_NOTIFICATION");
ps->atoms_wintypes[WINTYPE_COMBO] = get_atom(ps,
"_NET_WM_WINDOW_TYPE_COMBO");
ps->atoms_wintypes[WINTYPE_DND] = get_atom(ps,
"_NET_WM_WINDOW_TYPE_DND");
}
/**
* Update refresh rate info with X Randr extension.
*/
static void
update_refresh_rate(session_t *ps) {
xcb_connection_t *c = XGetXCBConnection(ps->dpy);
xcb_randr_get_screen_info_reply_t *randr_info =
xcb_randr_get_screen_info_reply(c,
xcb_randr_get_screen_info(c, ps->root), NULL);
if (!randr_info)
return;
ps->refresh_rate = randr_info->rate;
free(randr_info);
if (ps->refresh_rate)
ps->refresh_intv = US_PER_SEC / ps->refresh_rate;
else
ps->refresh_intv = 0;
}
/**
* Initialize refresh-rated based software optimization.
*
* @return true for success, false otherwise
*/
static bool
swopti_init(session_t *ps) {
// Prepare refresh rate
// Check if user provides one
ps->refresh_rate = ps->o.refresh_rate;
if (ps->refresh_rate)
ps->refresh_intv = US_PER_SEC / ps->refresh_rate;
// Auto-detect refresh rate otherwise
if (!ps->refresh_rate && ps->randr_exists) {
update_refresh_rate(ps);
}
// Turn off vsync_sw if we can't get the refresh rate
if (!ps->refresh_rate)
return false;
return true;
}
/**
* Modify a struct timeval timeout value to render at a fixed pace.
*
* @param ps current session
* @param[in,out] ptv pointer to the timeout
*/
static double
swopti_handle_timeout(session_t *ps) {
// Get the microsecond offset of the time when the we reach the timeout
// I don't think a 32-bit long could overflow here.
long offset = (get_time_timeval().tv_usec - ps->paint_tm_offset) % ps->refresh_intv;
if (offset < 0)
offset += ps->refresh_intv;
// If the target time is sufficiently close to a refresh time, don't add
// an offset, to avoid certain blocking conditions.
if (offset < SWOPTI_TOLERANCE
|| offset > ps->refresh_intv - SWOPTI_TOLERANCE)
return 0;
// Add an offset so we wait until the next refresh after timeout
return (ps->refresh_intv - offset) / 1e6;
}
/**
* Initialize DRM VSync.
*
* @return true for success, false otherwise
*/
static bool
vsync_drm_init(session_t *ps) {
#ifdef CONFIG_VSYNC_DRM
// Should we always open card0?
if (ps->drm_fd < 0 && (ps->drm_fd = open("/dev/dri/card0", O_RDWR)) < 0) {
printf_errf("(): Failed to open device.");
return false;
}
if (vsync_drm_wait(ps))
return false;
return true;
#else
printf_errf("(): Program not compiled with DRM VSync support.");
return false;
#endif
}
#ifdef CONFIG_VSYNC_DRM
/**
* Wait for next VSync, DRM method.
*
* Stolen from: https://github.com/MythTV/mythtv/blob/master/mythtv/libs/libmythtv/vsync.cpp
*/
static int
vsync_drm_wait(session_t *ps) {
int ret = -1;
drm_wait_vblank_t vbl;
vbl.request.type = _DRM_VBLANK_RELATIVE,
vbl.request.sequence = 1;
do {
ret = ioctl(ps->drm_fd, DRM_IOCTL_WAIT_VBLANK, &vbl);
vbl.request.type &= ~_DRM_VBLANK_RELATIVE;
} while (ret && errno == EINTR);
if (ret)
fprintf(stderr, "vsync_drm_wait(): VBlank ioctl did not work, "
"unimplemented in this drmver?\n");
return ret;
}
#endif
/**
* Initialize OpenGL VSync.
*
* Stolen from: http://git.tuxfamily.org/?p=ccm/cairocompmgr.git;a=commitdiff;h=efa4ceb97da501e8630ca7f12c99b1dce853c73e
* Possible original source: http://www.inb.uni-luebeck.de/~boehme/xvideo_sync.html
*
* @return true for success, false otherwise
*/
static bool
vsync_opengl_init(session_t *ps) {
#ifdef CONFIG_OPENGL
if (!ensure_glx_context(ps))
return false;
// Get video sync functions
if (!ps->psglx->glXGetVideoSyncSGI)
ps->psglx->glXGetVideoSyncSGI = (f_GetVideoSync)
glXGetProcAddress((const GLubyte *) "glXGetVideoSyncSGI");
if (!ps->psglx->glXWaitVideoSyncSGI)
ps->psglx->glXWaitVideoSyncSGI = (f_WaitVideoSync)
glXGetProcAddress((const GLubyte *) "glXWaitVideoSyncSGI");
if (!ps->psglx->glXWaitVideoSyncSGI || !ps->psglx->glXGetVideoSyncSGI) {
printf_errf("(): Failed to get glXWait/GetVideoSyncSGI function.");
return false;
}
return true;
#else
printf_errf("(): Program not compiled with OpenGL VSync support.");
return false;
#endif
}
static bool
vsync_opengl_oml_init(session_t *ps) {
#ifdef CONFIG_OPENGL
if (!ensure_glx_context(ps))
return false;
// Get video sync functions
if (!ps->psglx->glXGetSyncValuesOML)
ps->psglx->glXGetSyncValuesOML = (f_GetSyncValuesOML)
glXGetProcAddress ((const GLubyte *) "glXGetSyncValuesOML");
if (!ps->psglx->glXWaitForMscOML)
ps->psglx->glXWaitForMscOML = (f_WaitForMscOML)
glXGetProcAddress ((const GLubyte *) "glXWaitForMscOML");
if (!ps->psglx->glXGetSyncValuesOML || !ps->psglx->glXWaitForMscOML) {
printf_errf("(): Failed to get OML_sync_control functions.");
return false;
}
return true;
#else
printf_errf("(): Program not compiled with OpenGL VSync support.");
return false;
#endif
}
static bool
vsync_opengl_swc_init(session_t *ps) {
#ifdef CONFIG_OPENGL
if (!ensure_glx_context(ps))
return false;
if (!bkend_use_glx(ps)) {
printf_errf("(): I'm afraid glXSwapIntervalSGI wouldn't help if you are "
"not using GLX backend. You could try, nonetheless.");
}
// Get video sync functions
if (!ps->psglx->glXSwapIntervalProc)
ps->psglx->glXSwapIntervalProc = (f_SwapIntervalSGI)
glXGetProcAddress ((const GLubyte *) "glXSwapIntervalSGI");
if (!ps->psglx->glXSwapIntervalProc) {
printf_errf("(): Failed to get SGI_swap_control function.");
return false;
}
ps->psglx->glXSwapIntervalProc(1);
return true;
#else
printf_errf("(): Program not compiled with OpenGL VSync support.");
return false;
#endif
}
static bool
vsync_opengl_mswc_init(session_t *ps) {
#ifdef CONFIG_OPENGL
if (!ensure_glx_context(ps))
return false;
if (!bkend_use_glx(ps)) {
printf_errf("(): I'm afraid glXSwapIntervalMESA wouldn't help if you are "
"not using GLX backend. You could try, nonetheless.");
}
// Get video sync functions
if (!ps->psglx->glXSwapIntervalMESAProc)
ps->psglx->glXSwapIntervalMESAProc = (f_SwapIntervalMESA)
glXGetProcAddress ((const GLubyte *) "glXSwapIntervalMESA");
if (!ps->psglx->glXSwapIntervalMESAProc) {
printf_errf("(): Failed to get MESA_swap_control function.");
return false;
}
ps->psglx->glXSwapIntervalMESAProc(1);
return true;
#else
printf_errf("(): Program not compiled with OpenGL VSync support.");
return false;
#endif
}
#ifdef CONFIG_OPENGL
/**
* Wait for next VSync, OpenGL method.
*/
static int
vsync_opengl_wait(session_t *ps) {
unsigned vblank_count = 0;
ps->psglx->glXGetVideoSyncSGI(&vblank_count);
ps->psglx->glXWaitVideoSyncSGI(2, (vblank_count + 1) % 2, &vblank_count);
// I see some code calling glXSwapIntervalSGI(1) afterwards, is it required?
return 0;
}
/**
* Wait for next VSync, OpenGL OML method.
*
* https://mail.gnome.org/archives/clutter-list/2012-November/msg00031.html
*/
static int
vsync_opengl_oml_wait(session_t *ps) {
int64_t ust = 0, msc = 0, sbc = 0;
ps->psglx->glXGetSyncValuesOML(ps->dpy, ps->reg_win, &ust, &msc, &sbc);
ps->psglx->glXWaitForMscOML(ps->dpy, ps->reg_win, 0, 2, (msc + 1) % 2,
&ust, &msc, &sbc);
return 0;
}
static void
vsync_opengl_swc_deinit(session_t *ps) {
// The standard says it doesn't accept 0, but in fact it probably does
if (glx_has_context(ps) && ps->psglx->glXSwapIntervalProc)
ps->psglx->glXSwapIntervalProc(0);
}
static void
vsync_opengl_mswc_deinit(session_t *ps) {
if (glx_has_context(ps) && ps->psglx->glXSwapIntervalMESAProc)
ps->psglx->glXSwapIntervalMESAProc(0);
}
#endif
/**
* Initialize current VSync method.
*/
bool
vsync_init(session_t *ps) {
if (ps->o.vsync && VSYNC_FUNCS_INIT[ps->o.vsync]
&& !VSYNC_FUNCS_INIT[ps->o.vsync](ps)) {
ps->o.vsync = VSYNC_NONE;
return false;
}
else
return true;
}
/**
* Wait for next VSync.
*/
static void
vsync_wait(session_t *ps) {
if (!ps->o.vsync)
return;
if (VSYNC_FUNCS_WAIT[ps->o.vsync])
VSYNC_FUNCS_WAIT[ps->o.vsync](ps);
}
/**
* Deinitialize current VSync method.
*/
void
vsync_deinit(session_t *ps) {
if (ps->o.vsync && VSYNC_FUNCS_DEINIT[ps->o.vsync])
VSYNC_FUNCS_DEINIT[ps->o.vsync](ps);
}
/**
* Pregenerate alpha pictures.
*/
static void
init_alpha_picts(session_t *ps) {
int i;
int num = round(1.0 / ps->o.alpha_step) + 1;
ps->alpha_picts = malloc(sizeof(xcb_render_picture_t) * num);
for (i = 0; i < num; ++i) {
double o = i * ps->o.alpha_step;
if ((1.0 - o) > ps->o.alpha_step) {
ps->alpha_picts[i] = solid_picture(ps, false, o, 0, 0, 0);
assert(ps->alpha_picts[i] != None);
} else
ps->alpha_picts[i] = None;
}
}
/**
* Initialize double buffer.
*/
static bool
init_dbe(session_t *ps) {
if (!(ps->root_dbe = XdbeAllocateBackBufferName(ps->dpy,
(ps->o.paint_on_overlay ? ps->overlay: ps->root), XdbeCopied))) {
printf_errf("(): Failed to create double buffer. Double buffering "
"cannot work.");
return false;
}
return true;
}
/**
* Initialize X composite overlay window.
*/
static bool
init_overlay(session_t *ps) {
xcb_connection_t *c = XGetXCBConnection(ps->dpy);
xcb_composite_get_overlay_window_reply_t *reply =
xcb_composite_get_overlay_window_reply(c,
xcb_composite_get_overlay_window(c, ps->root), NULL);
if (reply) {
ps->overlay = reply->overlay_win;
free(reply);
} else {
ps->overlay = XCB_NONE;
}
if (ps->overlay) {
// Set window region of the overlay window, code stolen from
// compiz-0.8.8
xcb_generic_error_t *e;
e = XCB_SYNCED_VOID(xcb_shape_mask, c, XCB_SHAPE_SO_SET, XCB_SHAPE_SK_BOUNDING,
ps->overlay, 0, 0, 0);
if (e) {
printf_errf("(): failed to set the bounding shape of overlay, giving up.");
exit(1);
}
e = XCB_SYNCED_VOID(xcb_shape_rectangles, c, XCB_SHAPE_SO_SET, XCB_SHAPE_SK_INPUT,
XCB_CLIP_ORDERING_UNSORTED, ps->overlay, 0, 0, 0, NULL);
if (e) {
printf_errf("(): failed to set the input shape of overlay, giving up.");
exit(1);
}
// Listen to Expose events on the overlay
XSelectInput(ps->dpy, ps->overlay, ExposureMask);
// Retrieve DamageNotify on root window if we are painting on an
// overlay
// root_damage = XDamageCreate(ps->dpy, root, XDamageReportNonEmpty);
// Unmap overlay, firstly. But this typically does not work because
// the window isn't created yet.
// XUnmapWindow(ps->dpy, ps->overlay);
// XFlush(ps->dpy);
}
else {
fprintf(stderr, "Cannot get X Composite overlay window. Falling "
"back to painting on root window.\n");
ps->o.paint_on_overlay = false;
}
#ifdef DEBUG_REDIR
printf_dbgf("(): overlay = %#010lx\n", ps->overlay);
#endif
return ps->overlay;
}
/**
* Query needed X Render / OpenGL filters to check for their existence.
*/
static bool
init_filters(session_t *ps) {
xcb_connection_t *c = XGetXCBConnection(ps->dpy);
// Blur filter
if (ps->o.blur_background || ps->o.blur_background_frame) {
switch (ps->o.backend) {
case BKEND_XRENDER:
case BKEND_XR_GLX_HYBRID:
{
// Query filters
xcb_render_query_filters_reply_t *pf = xcb_render_query_filters_reply(c,
xcb_render_query_filters(c, get_tgt_window(ps)), NULL);
if (pf) {
xcb_str_iterator_t iter = xcb_render_query_filters_filters_iterator(pf);
for (; iter.rem; xcb_str_next(&iter)) {
// Convolution filter
if (strlen(XRFILTER_CONVOLUTION) == xcb_str_name_length(iter.data)
&& !memcmp(XRFILTER_CONVOLUTION, xcb_str_name(iter.data), strlen(XRFILTER_CONVOLUTION)))
ps->xrfilter_convolution_exists = true;
}
free(pf);
}
// Turn features off if any required filter is not present
if (!ps->xrfilter_convolution_exists) {
printf_errf("(): X Render convolution filter unsupported by your X server. Background blur is not possible.");
return false;
}
break;
}
#ifdef CONFIG_OPENGL
case BKEND_GLX:
return glx_init_blur(ps);
#endif
default:
assert(false);
}
}
return true;
}
/**
* Redirect all windows.
*/
static void
redir_start(session_t *ps) {
if (!ps->redirected) {
#ifdef DEBUG_REDIR
print_timestamp(ps);
printf_dbgf("(): Screen redirected.\n");
#endif
xcb_connection_t *c = XGetXCBConnection(ps->dpy);
// Map overlay window. Done firstly according to this:
// https://bugzilla.gnome.org/show_bug.cgi?id=597014
if (ps->overlay)
XMapWindow(ps->dpy, ps->overlay);
xcb_composite_redirect_subwindows(c, ps->root, XCB_COMPOSITE_REDIRECT_MANUAL);
/*
// Unredirect GL context window as this may have an effect on VSync:
// < http://dri.freedesktop.org/wiki/CompositeSwap >
xcb_composite_unredirect_window(c, ps->reg_win, XCB_COMPOSITE_REDIRECT_MANUAL);
if (ps->o.paint_on_overlay && ps->overlay) {
xcb_composite_unredirect_window(c, ps->overlay,
XCB_COMPOSITE_REDIRECT_MANUAL);
} */
// Must call XSync() here
XSync(ps->dpy, False);
ps->redirected = true;
// Repaint the whole screen
force_repaint(ps);
}
}
/**
* Unredirect all windows.
*/
static void
redir_stop(session_t *ps) {
if (ps->redirected) {
xcb_connection_t *c = XGetXCBConnection(ps->dpy);
#ifdef DEBUG_REDIR
print_timestamp(ps);
printf_dbgf("(): Screen unredirected.\n");
#endif
// Destroy all Pictures as they expire once windows are unredirected
// If we don't destroy them here, looks like the resources are just
// kept inaccessible somehow
for (win *w = ps->list; w; w = w->next)
free_wpaint(ps, w);
xcb_composite_unredirect_subwindows(c, ps->root, XCB_COMPOSITE_REDIRECT_MANUAL);
// Unmap overlay window
if (ps->overlay)
XUnmapWindow(ps->dpy, ps->overlay);
// Must call XSync() here
XSync(ps->dpy, False);
ps->redirected = false;
}
}
// Handle queued events before we go to sleep
static void
handle_queued_x_events(EV_P_ ev_prepare *w, int revents) {
ev_session_prepare *sw = (void *)w;
session_t *ps = sw->ps;
xcb_generic_event_t *ev;
xcb_connection_t *c = XGetXCBConnection(ps->dpy);
while ((ev = xcb_poll_for_queued_event(c))) {
ev_handle(ps, ev);
free(ev);
};
XFlush(ps->dpy);
xcb_flush(c);
}
/**
* Unredirection timeout callback.
*/
static void
tmout_unredir_callback(EV_P_ ev_timer *w, int revents) {
ev_session_timer *sw = (void *)w;
sw->ps->tmout_unredir_hit = true;
queue_redraw(sw->ps);
}
static void
fade_timer_callback(EV_P_ ev_timer *w, int revents) {
ev_session_timer *sw = (void *)w;
queue_redraw(sw->ps);
}
static void
_draw_callback(EV_P_ session_t *ps, int revents) {
if (ps->o.benchmark) {
if (ps->o.benchmark_wid) {
win *wi = find_win(ps, ps->o.benchmark_wid);
if (!wi) {
printf_errf("(): Couldn't find specified benchmark window.");
exit(1);
}
add_damage_from_win(ps, wi);
}
else {
force_repaint(ps);
}
}
ps->fade_running = false;
win *t = paint_preprocess(ps, ps->list);
ps->tmout_unredir_hit = false;
// Start/stop fade timer depends on whether window are fading
if (!ps->fade_running && ev_is_active(&ps->fade_timer->w))
ev_timer_stop(ps->loop, &ps->fade_timer->w);
else if (ps->fade_running && !ev_is_active(&ps->fade_timer->w)) {
ev_timer_set(&ps->fade_timer->w, fade_timeout(ps), 0);
ev_timer_start(ps->loop, &ps->fade_timer->w);
}
// If the screen is unredirected, free all_damage to stop painting
if (!ps->redirected || ps->o.stoppaint_force == ON)
pixman_region32_clear(&ps->all_damage);
if (pixman_region32_not_empty(&ps->all_damage)) {
region_t all_damage_orig, *region_real = NULL;
pixman_region32_init(&all_damage_orig);
// keep a copy of non-resized all_damage for region_real
if (ps->o.resize_damage > 0) {
copy_region(&all_damage_orig, &ps->all_damage);
resize_region(ps, &ps->all_damage, ps->o.resize_damage);
region_real = &all_damage_orig;
}
static int paint = 0;
paint_all(ps, &ps->all_damage, region_real, t);
pixman_region32_clear(&ps->all_damage);
pixman_region32_fini(&all_damage_orig);
paint++;
if (ps->o.benchmark && paint >= ps->o.benchmark)
exit(0);
}
if (!ps->fade_running)
ps->fade_time = 0L;
ps->redraw_needed = false;
}
static void
draw_callback(EV_P_ ev_idle *w, int revents) {
// This function is not used if we are using --swopti
ev_session_idle *sw = (void *)w;
_draw_callback(EV_A_ sw->ps, revents);
// Don't do painting non-stop unless we are in benchmark mode
if (!sw->ps->o.benchmark)
ev_idle_stop(sw->ps->loop, &sw->ps->draw_idle->w);
}
static void
delayed_draw_timer_callback(EV_P_ ev_timer *w, int revents) {
ev_session_timer *sw = (void *)w;
_draw_callback(EV_A_ sw->ps, revents);
// We might have stopped the ev_idle in delayed_draw_callback,
// so we restart it if we are in benchmark mode
if (sw->ps->o.benchmark)
ev_idle_start(EV_A_ &sw->ps->draw_idle->w);
}
static void
delayed_draw_callback(EV_P_ ev_idle *w, int revents) {
// This function is only used if we are using --swopti
ev_session_idle *sw = (void *)w;
if (ev_is_active(sw->ps->delayed_draw_timer))
return;
double delay = swopti_handle_timeout(sw->ps);
printf_errf("(): %lf", delay);
if (delay < 1e-6)
return _draw_callback(EV_A_ sw->ps, revents);
// This is a little bit hacky. When we get to this point in code, we need
// to update the screen , but we will only be updated after a delay, So
// we want to stop the ev_idle, so this callback doesn't get call repeatedly
// during the delay, we also want queue_redraw to not restart the ev_idle.
// So we stop ev_idle and leave ps->redraw_needed to be true.
//
// We do this anyway even if we are in benchmark mode. That means we will
// have to restart draw_idle after the draw actually happened when we are in
// benchmark mode.
ev_idle_stop(sw->ps->loop, &sw->ps->draw_idle->w);
ev_timer_set(&sw->ps->delayed_draw_timer->w, delay, 0);
ev_timer_start(sw->ps->loop, &sw->ps->delayed_draw_timer->w);
}
static void
x_event_callback(EV_P_ ev_io *w, int revents) {
session_t *ps = (session_t *)w;
xcb_connection_t *c = XGetXCBConnection(ps->dpy);
xcb_generic_event_t *ev = xcb_poll_for_event(c);
if (ev) {
ev_handle(ps, ev);
free(ev);
}
}
static void
cxinerama_upd_scrs(session_t *ps) {
#ifdef CONFIG_XINERAMA
// XXX Consider deprecating Xinerama, switch to RandR when necessary
free_xinerama_info(ps);
if (!ps->o.xinerama_shadow_crop || !ps->xinerama_exists) return;
xcb_connection_t *c = XGetXCBConnection(ps->dpy);
xcb_xinerama_is_active_reply_t *active =
xcb_xinerama_is_active_reply(c,
xcb_xinerama_is_active(c), NULL);
if (!active || !active->state) {
free(active);
return;
}
free(active);
ps->xinerama_scrs = xcb_xinerama_query_screens_reply(c,
xcb_xinerama_query_screens(c), NULL);
if (!ps->xinerama_scrs)
return;
xcb_xinerama_screen_info_t *scrs = xcb_xinerama_query_screens_screen_info(ps->xinerama_scrs);
ps->xinerama_nscrs = xcb_xinerama_query_screens_screen_info_length(ps->xinerama_scrs);
ps->xinerama_scr_regs = allocchk(malloc(sizeof(region_t)
* ps->xinerama_nscrs));
for (int i = 0; i < ps->xinerama_nscrs; ++i) {
const xcb_xinerama_screen_info_t * const s = &scrs[i];
pixman_region32_init_rect(&ps->xinerama_scr_regs[i], s->x_org, s->y_org, s->width, s->height);
}
#endif
}
/**
* Initialize a session.
*
* @param ps_old old session, from which the function will take the X
* connection, then free it
* @param argc number of commandline arguments
* @param argv commandline arguments
*/
static session_t *
session_init(session_t *ps_old, int argc, char **argv) {
static const session_t s_def = {
.dpy = NULL,
.scr = 0,
.vis = 0,
.depth = 0,
.root = None,
.root_height = 0,
.root_width = 0,
// .root_damage = None,
.overlay = None,
.root_tile_fill = false,
.root_tile_paint = PAINT_INIT,
.tgt_picture = None,
.tgt_buffer = PAINT_INIT,
.root_dbe = None,
.reg_win = None,
.o = {
.config_file = NULL,
.display = NULL,
.backend = BKEND_XRENDER,
.glx_no_stencil = false,
#ifdef CONFIG_OPENGL
.glx_prog_win = GLX_PROG_MAIN_INIT,
#endif
.mark_wmwin_focused = false,
.mark_ovredir_focused = false,
.fork_after_register = false,
.synchronize = false,
.detect_rounded_corners = false,
.paint_on_overlay = false,
.resize_damage = 0,
.unredir_if_possible = false,
.unredir_if_possible_blacklist = NULL,
.unredir_if_possible_delay = 0,
.redirected_force = UNSET,
.stoppaint_force = UNSET,
.dbus = false,
.benchmark = 0,
.benchmark_wid = None,
.logpath = NULL,
.refresh_rate = 0,
.sw_opti = false,
.vsync = VSYNC_NONE,
.dbe = false,
.vsync_aggressive = false,
.wintype_shadow = { false },
.shadow_red = 0.0,
.shadow_green = 0.0,
.shadow_blue = 0.0,
.shadow_radius = 12,
.shadow_offset_x = -15,
.shadow_offset_y = -15,
.shadow_opacity = .75,
.shadow_blacklist = NULL,
.shadow_ignore_shaped = false,
.respect_prop_shadow = false,
.xinerama_shadow_crop = false,
.wintype_fade = { false },
.fade_in_step = 0.028 * OPAQUE,
.fade_out_step = 0.03 * OPAQUE,
.fade_delta = 10,
.no_fading_openclose = false,
.no_fading_destroyed_argb = false,
.fade_blacklist = NULL,
.wintype_opacity = { NAN },
.inactive_opacity = OPAQUE,
.inactive_opacity_override = false,
.active_opacity = OPAQUE,
.frame_opacity = 1.0,
.detect_client_opacity = false,
.alpha_step = 0.03,
.blur_background = false,
.blur_background_frame = false,
.blur_background_fixed = false,
.blur_background_blacklist = NULL,
.blur_kerns = { NULL },
.inactive_dim = 0.0,
.inactive_dim_fixed = false,
.invert_color_list = NULL,
.opacity_rules = NULL,
.wintype_focus = { false },
.use_ewmh_active_win = false,
.focus_blacklist = NULL,
.detect_transient = false,
.detect_client_leader = false,
.track_focus = false,
.track_wdata = false,
.track_leader = false,
},
.time_start = { 0, 0 },
.redirected = false,
.alpha_picts = NULL,
.fade_running = false,
.fade_time = 0L,
.ignore_head = NULL,
.ignore_tail = NULL,
.quit = false,
.expose_rects = NULL,
.size_expose = 0,
.n_expose = 0,
.list = NULL,
.active_win = NULL,
.active_leader = None,
.black_picture = None,
.cshadow_picture = None,
.white_picture = None,
.gaussian_map = NULL,
.cgsize = 0,
.shadow_corner = NULL,
.shadow_top = NULL,
.refresh_rate = 0,
.refresh_intv = 0UL,
.paint_tm_offset = 0L,
#ifdef CONFIG_VSYNC_DRM
.drm_fd = -1,
#endif
.xfixes_event = 0,
.xfixes_error = 0,
.damage_event = 0,
.damage_error = 0,
.render_event = 0,
.render_error = 0,
.composite_event = 0,
.composite_error = 0,
.composite_opcode = 0,
.has_name_pixmap = false,
.shape_exists = false,
.shape_event = 0,
.shape_error = 0,
.randr_exists = 0,
.randr_event = 0,
.randr_error = 0,
#ifdef CONFIG_OPENGL
.glx_exists = false,
.glx_event = 0,
.glx_error = 0,
#endif
.dbe_exists = false,
.xrfilter_convolution_exists = false,
.atom_opacity = None,
.atom_frame_extents = None,
.atom_client = None,
.atom_name = None,
.atom_name_ewmh = None,
.atom_class = None,
.atom_role = None,
.atom_transient = None,
.atom_ewmh_active_win = None,
.atom_compton_shadow = None,
.atom_win_type = None,
.atoms_wintypes = { 0 },
.track_atom_lst = NULL,
#ifdef CONFIG_DBUS
.dbus_conn = NULL,
.dbus_service = NULL,
#endif
};
// Allocate a session and copy default values into it
session_t *ps = malloc(sizeof(session_t));
*ps = s_def;
ps->loop = EV_DEFAULT;
pixman_region32_init(&ps->screen_reg);
pixman_region32_init(&ps->all_damage);
for (int i = 0; i < CGLX_MAX_BUFFER_AGE; i ++)
pixman_region32_init(&ps->all_damage_last[i]);
ps_g = ps;
ps->ignore_tail = &ps->ignore_head;
gettimeofday(&ps->time_start, NULL);
wintype_arr_enable(ps->o.wintype_focus);
ps->o.wintype_focus[WINTYPE_UNKNOWN] = false;
ps->o.wintype_focus[WINTYPE_NORMAL] = false;
ps->o.wintype_focus[WINTYPE_UTILITY] = false;
// First pass
get_cfg(ps, argc, argv, true);
// Inherit old Display if possible, primarily for resource leak checking
if (ps_old && ps_old->dpy)
ps->dpy = ps_old->dpy;
// Open Display
if (!ps->dpy) {
ps->dpy = XOpenDisplay(ps->o.display);
if (!ps->dpy) {
printf_errfq(1, "(): Can't open display.");
}
XSetEventQueueOwner(ps->dpy, XCBOwnsEventQueue);
}
xcb_connection_t *c = XGetXCBConnection(ps->dpy);
const xcb_query_extension_reply_t *ext_info;
XSetErrorHandler(xerror);
if (ps->o.synchronize) {
XSynchronize(ps->dpy, 1);
}
ps->scr = DefaultScreen(ps->dpy);
ps->root = RootWindow(ps->dpy, ps->scr);
ps->vis = XVisualIDFromVisual(DefaultVisual(ps->dpy, ps->scr));
ps->depth = DefaultDepth(ps->dpy, ps->scr);
// Start listening to events on root earlier to catch all possible
// root geometry changes
XSelectInput(ps->dpy, ps->root,
SubstructureNotifyMask
| ExposureMask
| StructureNotifyMask
| PropertyChangeMask);
XFlush(ps->dpy);
ps->root_width = DisplayWidth(ps->dpy, ps->scr);
ps->root_height = DisplayHeight(ps->dpy, ps->scr);
xcb_prefetch_extension_data(c, &xcb_render_id);
xcb_prefetch_extension_data(c, &xcb_composite_id);
xcb_prefetch_extension_data(c, &xcb_damage_id);
xcb_prefetch_extension_data(c, &xcb_shape_id);
xcb_prefetch_extension_data(c, &xcb_xfixes_id);
xcb_prefetch_extension_data(c, &xcb_randr_id);
xcb_prefetch_extension_data(c, &xcb_xinerama_id);
ext_info = xcb_get_extension_data(c, &xcb_render_id);
if (!ext_info || !ext_info->present) {
fprintf(stderr, "No render extension\n");
exit(1);
}
ps->render_event = ext_info->first_event;
ps->render_error = ext_info->first_error;
ext_info = xcb_get_extension_data(c, &xcb_composite_id);
if (!ext_info || !ext_info->present) {
fprintf(stderr, "No composite extension\n");
exit(1);
}
ps->composite_opcode = ext_info->major_opcode;
ps->composite_event = ext_info->first_event;
ps->composite_error = ext_info->first_error;
{
xcb_composite_query_version_reply_t *reply =
xcb_composite_query_version_reply(c,
xcb_composite_query_version(c, XCB_COMPOSITE_MAJOR_VERSION, XCB_COMPOSITE_MINOR_VERSION),
NULL);
if (!ps->o.no_name_pixmap
&& reply && (reply->major_version > 0 || reply->minor_version >= 2)) {
ps->has_name_pixmap = true;
}
free(reply);
}
ext_info = xcb_get_extension_data(c, &xcb_damage_id);
if (!ext_info || !ext_info->present) {
fprintf(stderr, "No damage extension\n");
exit(1);
}
ps->damage_event = ext_info->first_event;
ps->damage_error = ext_info->first_error;
xcb_discard_reply(c,
xcb_damage_query_version(c, XCB_DAMAGE_MAJOR_VERSION, XCB_DAMAGE_MINOR_VERSION).sequence);
ext_info = xcb_get_extension_data(c, &xcb_xfixes_id);
if (!ext_info || !ext_info->present) {
fprintf(stderr, "No XFixes extension\n");
exit(1);
}
ps->xfixes_event = ext_info->first_event;
ps->xfixes_error = ext_info->first_error;
xcb_discard_reply(c,
xcb_xfixes_query_version(c, XCB_XFIXES_MAJOR_VERSION, XCB_XFIXES_MINOR_VERSION).sequence);
// Build a safe representation of display name
{
char *display_repr = DisplayString(ps->dpy);
if (!display_repr)
display_repr = "unknown";
display_repr = mstrcpy(display_repr);
// Convert all special characters in display_repr name to underscore
{
char *pdisp = display_repr;
while (*pdisp) {
if (!isalnum(*pdisp))
*pdisp = '_';
++pdisp;
}
}
ps->o.display_repr = display_repr;
}
// Second pass
get_cfg(ps, argc, argv, false);
// Query X Shape
ext_info = xcb_get_extension_data(c, &xcb_shape_id);
if (ext_info && ext_info->present) {
ps->shape_event = ext_info->first_event;
ps->shape_error = ext_info->first_error;
ps->shape_exists = true;
}
if (ps->o.xrender_sync_fence) {
#ifdef CONFIG_XSYNC
// Query X Sync
if (XSyncQueryExtension(ps->dpy, &ps->xsync_event, &ps->xsync_error)) {
// TODO: Fencing may require version >= 3.0?
int major_version_return = 0, minor_version_return = 0;
if (XSyncInitialize(ps->dpy, &major_version_return, &minor_version_return))
ps->xsync_exists = true;
}
if (!ps->xsync_exists) {
printf_errf("(): X Sync extension not found. No X Sync fence sync is "
"possible.");
exit(1);
}
#else
printf_errf("(): X Sync support not compiled in. --xrender-sync-fence "
"can't work.");
exit(1);
#endif
}
// Query X RandR
if ((ps->o.sw_opti && !ps->o.refresh_rate) || ps->o.xinerama_shadow_crop) {
ext_info = xcb_get_extension_data(c, &xcb_randr_id);
if (ext_info && ext_info->present) {
ps->randr_exists = true;
ps->randr_event = ext_info->first_event;
ps->randr_error = ext_info->first_error;
} else
printf_errf("(): No XRandR extension, automatic screen change "
"detection impossible.");
}
// Query X DBE extension
if (ps->o.dbe) {
int dbe_ver_major = 0, dbe_ver_minor = 0;
if (XdbeQueryExtension(ps->dpy, &dbe_ver_major, &dbe_ver_minor))
if (dbe_ver_major >= 1)
ps->dbe_exists = true;
else
fprintf(stderr, "DBE extension version too low. Double buffering "
"impossible.\n");
else {
fprintf(stderr, "No DBE extension. Double buffering impossible.\n");
}
if (!ps->dbe_exists)
ps->o.dbe = false;
}
// Query X Xinerama extension
if (ps->o.xinerama_shadow_crop) {
#ifdef CONFIG_XINERAMA
ext_info = xcb_get_extension_data(c, &xcb_xinerama_id);
ps->xinerama_exists = ext_info && ext_info->present;
#else
printf_errf("(): Xinerama support not compiled in.");
#endif
}
rebuild_screen_reg(ps);
// Overlay must be initialized before double buffer, and before creation
// of OpenGL context.
if (ps->o.paint_on_overlay)
init_overlay(ps);
// Initialize DBE
if (ps->o.dbe && BKEND_XRENDER != ps->o.backend) {
printf_errf("(): DBE couldn't be used on GLX backend.");
ps->o.dbe = false;
}
if (ps->o.dbe && !init_dbe(ps))
exit(1);
// Initialize OpenGL as early as possible
if (bkend_use_glx(ps)) {
#ifdef CONFIG_OPENGL
if (!glx_init(ps, true))
exit(1);
#else
printf_errfq(1, "(): GLX backend support not compiled in.");
#endif
}
// Initialize window GL shader
if (BKEND_GLX == ps->o.backend && ps->o.glx_fshader_win_str) {
#ifdef CONFIG_OPENGL
if (!glx_load_prog_main(ps, NULL, ps->o.glx_fshader_win_str, &ps->o.glx_prog_win))
exit(1);
#else
printf_errf("(): GLSL supported not compiled in, can't load shader.");
exit(1);
#endif
}
// Initialize software optimization
if (ps->o.sw_opti)
ps->o.sw_opti = swopti_init(ps);
// Monitor screen changes if vsync_sw is enabled and we are using
// an auto-detected refresh rate, or when Xinerama features are enabled
if (ps->randr_exists && ((ps->o.sw_opti && !ps->o.refresh_rate)
|| ps->o.xinerama_shadow_crop))
xcb_randr_select_input(c, ps->root, XCB_RANDR_NOTIFY_MASK_SCREEN_CHANGE);
// Initialize VSync
if (!vsync_init(ps))
exit(1);
cxinerama_upd_scrs(ps);
// Create registration window
if (!ps->reg_win && !register_cm(ps))
exit(1);
init_atoms(ps);
init_alpha_picts(ps);
ps->gaussian_map = make_gaussian_map(ps->o.shadow_radius);
presum_gaussian(ps, ps->gaussian_map);
{
xcb_render_create_picture_value_list_t pa = {
.subwindowmode = IncludeInferiors,
};
ps->root_picture = x_create_picture_with_visual_and_pixmap(ps,
ps->vis, ps->root, XCB_RENDER_CP_SUBWINDOW_MODE, &pa);
if (ps->o.paint_on_overlay) {
ps->tgt_picture = x_create_picture_with_visual_and_pixmap(ps,
ps->vis, ps->overlay, XCB_RENDER_CP_SUBWINDOW_MODE, &pa);
} else
ps->tgt_picture = ps->root_picture;
}
// Initialize filters, must be preceded by OpenGL context creation
if (!init_filters(ps))
exit(1);
ps->black_picture = solid_picture(ps, true, 1, 0, 0, 0);
ps->white_picture = solid_picture(ps, true, 1, 1, 1, 1);
// Generates another Picture for shadows if the color is modified by
// user
if (!ps->o.shadow_red && !ps->o.shadow_green && !ps->o.shadow_blue) {
ps->cshadow_picture = ps->black_picture;
} else {
ps->cshadow_picture = solid_picture(ps, true, 1,
ps->o.shadow_red, ps->o.shadow_green, ps->o.shadow_blue);
}
ev_io_init(&ps->xiow, x_event_callback, ConnectionNumber(ps->dpy), EV_READ);
ev_io_start(ps->loop, &ps->xiow);
ps->unredir_timer = calloc(1, sizeof(ev_session_timer));
ps->unredir_timer->ps = ps;
ev_init(&ps->unredir_timer->w, tmout_unredir_callback);
ps->draw_idle = calloc(1, sizeof(ev_session_idle));
ps->draw_idle->ps = ps;
if (ps->o.sw_opti)
ev_idle_init(&ps->draw_idle->w, delayed_draw_callback);
else
ev_idle_init(&ps->draw_idle->w, draw_callback);
ps->fade_timer = calloc(1, sizeof(ev_session_timer));
ps->fade_timer->ps = ps;
ev_init(&ps->fade_timer->w, fade_timer_callback);
ps->delayed_draw_timer = calloc(1, sizeof(ev_session_timer));
ps->delayed_draw_timer->ps = ps;
ev_init(&ps->delayed_draw_timer->w, delayed_draw_timer_callback);
// xcb can read multiple events from the socket anytime a request which requires
// reply is made.
//
// Use an ev_prepare to make sure we cannot accidentally forget to handle them
// before we go to sleep.
//
// If we don't drain the queue before goes to sleep (i.e. blocking on socket
// input), we will be sleeping with events available in queue. Which might
// cause us to block indefinitely because arrival of new events could be
// dependent on processing of existing events (e.g. if we don't process damage
// event and do damage subtract, new damage event won't be generated.
ps->event_check = calloc(1, sizeof(ev_session_prepare));
ps->event_check->ps = ps;
ev_prepare_init(&ps->event_check->w, handle_queued_x_events);
// Make sure nothing can cause xcb to read from the X socket after events are
// handled and before we going to sleep.
ev_set_priority(&ps->event_check->w, EV_MINPRI);
ev_prepare_start(ps->loop, &ps->event_check->w);
XGrabServer(ps->dpy);
{
Window root_return, parent_return;
Window *children;
unsigned int nchildren;
XQueryTree(ps->dpy, ps->root, &root_return,
&parent_return, &children, &nchildren);
for (unsigned i = 0; i < nchildren; i++) {
add_win(ps, children[i], i ? children[i-1] : None);
}
cxfree(children);
}
if (ps->o.track_focus) {
recheck_focus(ps);
}
XUngrabServer(ps->dpy);
// ALWAYS flush after XUngrabServer()!
XFlush(ps->dpy);
// Initialize DBus
if (ps->o.dbus) {
#ifdef CONFIG_DBUS
cdbus_init(ps);
if (!ps->dbus_conn) {
cdbus_destroy(ps);
ps->o.dbus = false;
}
#else
printf_errfq(1, "(): DBus support not compiled in!");
#endif
}
// Fork to background, if asked
if (ps->o.fork_after_register) {
if (!fork_after(ps)) {
session_destroy(ps);
return NULL;
}
}
// Redirect output stream
if (ps->o.fork_after_register || ps->o.logpath)
ostream_reopen(ps, NULL);
write_pid(ps);
// Free the old session
if (ps_old)
free(ps_old);
return ps;
}
/**
* Destroy a session.
*
* Does not close the X connection or free the <code>session_t</code>
* structure, though.
*
* @param ps session to destroy
*/
static void
session_destroy(session_t *ps) {
xcb_connection_t *c = XGetXCBConnection(ps->dpy);
redir_stop(ps);
// Stop listening to events on root window
XSelectInput(ps->dpy, ps->root, 0);
#ifdef CONFIG_DBUS
// Kill DBus connection
if (ps->o.dbus)
cdbus_destroy(ps);
free(ps->dbus_service);
#endif
// Free window linked list
{
win *next = NULL;
for (win *w = ps->list; w; w = next) {
// Must be put here to avoid segfault
next = w->next;
if (IsViewable == w->a.map_state && !w->destroyed)
win_ev_stop(ps, w);
free_win_res(ps, w);
free(w);
}
ps->list = NULL;
}
// Free alpha_picts
{
const int max = round(1.0 / ps->o.alpha_step) + 1;
for (int i = 0; i < max; ++i)
free_picture(ps, &ps->alpha_picts[i]);
free(ps->alpha_picts);
ps->alpha_picts = NULL;
}
// Free blacklists
free_wincondlst(&ps->o.shadow_blacklist);
free_wincondlst(&ps->o.fade_blacklist);
free_wincondlst(&ps->o.focus_blacklist);
free_wincondlst(&ps->o.invert_color_list);
free_wincondlst(&ps->o.blur_background_blacklist);
free_wincondlst(&ps->o.opacity_rules);
free_wincondlst(&ps->o.paint_blacklist);
free_wincondlst(&ps->o.unredir_if_possible_blacklist);
// Free tracked atom list
{
latom_t *next = NULL;
for (latom_t *this = ps->track_atom_lst; this; this = next) {
next = this->next;
free(this);
}
ps->track_atom_lst = NULL;
}
// Free ignore linked list
{
ignore_t *next = NULL;
for (ignore_t *ign = ps->ignore_head; ign; ign = next) {
next = ign->next;
free(ign);
}
// Reset head and tail
ps->ignore_head = NULL;
ps->ignore_tail = &ps->ignore_head;
}
// Free cshadow_picture and black_picture
if (ps->cshadow_picture == ps->black_picture)
ps->cshadow_picture = None;
else
free_picture(ps, &ps->cshadow_picture);
free_picture(ps, &ps->black_picture);
free_picture(ps, &ps->white_picture);
// Free tgt_{buffer,picture} and root_picture
if (ps->tgt_buffer.pict == ps->tgt_picture)
ps->tgt_buffer.pict = None;
if (ps->tgt_picture == ps->root_picture)
ps->tgt_picture = None;
else
free_picture(ps, &ps->tgt_picture);
free_fence(ps, &ps->tgt_buffer_fence);
free_picture(ps, &ps->root_picture);
free_paint(ps, &ps->tgt_buffer);
// Free other X resources
free_root_tile(ps);
pixman_region32_fini(&ps->screen_reg);
pixman_region32_fini(&ps->all_damage);
for (int i = 0; i < CGLX_MAX_BUFFER_AGE; ++i)
pixman_region32_fini(&ps->all_damage_last[i]);
free(ps->expose_rects);
free(ps->shadow_corner);
free(ps->shadow_top);
free(ps->gaussian_map);
free(ps->o.config_file);
free(ps->o.write_pid_path);
free(ps->o.display);
free(ps->o.display_repr);
free(ps->o.logpath);
for (int i = 0; i < MAX_BLUR_PASS; ++i) {
free(ps->o.blur_kerns[i]);
free(ps->blur_kerns_cache[i]);
}
free(ps->o.glx_fshader_win_str);
free_xinerama_info(ps);
free(ps->pictfmts);
#ifdef CONFIG_OPENGL
glx_destroy(ps);
#endif
// Free double buffer
if (ps->root_dbe) {
XdbeDeallocateBackBufferName(ps->dpy, ps->root_dbe);
ps->root_dbe = None;
}
#ifdef CONFIG_VSYNC_DRM
// Close file opened for DRM VSync
if (ps->drm_fd >= 0) {
close(ps->drm_fd);
ps->drm_fd = -1;
}
#endif
// Release overlay window
if (ps->overlay) {
xcb_composite_release_overlay_window(c, ps->overlay);
ps->overlay = None;
}
// Free reg_win
if (ps->reg_win) {
XDestroyWindow(ps->dpy, ps->reg_win);
ps->reg_win = None;
}
// Flush all events
XSync(ps->dpy, True);
ev_io_stop(ps->loop, &ps->xiow);
#ifdef DEBUG_XRC
// Report about resource leakage
xrc_report_xid();
#endif
// Free timeouts
ev_timer_stop(ps->loop, &ps->unredir_timer->w);
free(ps->unredir_timer);
ps->unredir_timer = NULL;
ev_timer_stop(ps->loop, &ps->fade_timer->w);
free(ps->fade_timer);
ps->fade_timer = NULL;
ev_idle_stop(ps->loop, &ps->draw_idle->w);
free(ps->draw_idle);
ps->draw_idle = NULL;
ev_prepare_stop(ps->loop, &ps->event_check->w);
free(ps->event_check);
ps->event_check = NULL;
if (ps == ps_g)
ps_g = NULL;
}
/*
static inline void
dump_img(session_t *ps) {
int len = 0;
unsigned char *d = glx_take_screenshot(ps, &len);
write_binary_data("/tmp/dump.raw", d, len);
free(d);
}
*/
/**
* Do the actual work.
*
* @param ps current session
*/
static void
session_run(session_t *ps) {
win *t;
if (ps->o.sw_opti)
ps->paint_tm_offset = get_time_timeval().tv_usec;
t = paint_preprocess(ps, ps->list);
if (ps->redirected)
paint_all(ps, NULL, NULL, t);
if (ps->o.benchmark)
ev_idle_start(ps->loop, &ps->draw_idle->w);
ev_run(ps->loop, 0);
}
/**
* Turn on the program reset flag.
*
* This will result in compton resetting itself after next paint.
*/
static void
reset_enable(int __attribute__((unused)) signum) {
session_t * const ps = ps_g;
ev_break(ps->loop, EVBREAK_ALL);
}
/**
* The function that everybody knows.
*/
int
main(int argc, char **argv) {
// Set locale so window names with special characters are interpreted
// correctly
setlocale(LC_ALL, "");
// Set up SIGUSR1 signal handler to reset program
{
sigset_t block_mask;
sigemptyset(&block_mask);
const struct sigaction action= {
.sa_handler = reset_enable,
.sa_mask = block_mask,
.sa_flags = 0
};
sigaction(SIGUSR1, &action, NULL);
}
// Main loop
session_t *ps_old = ps_g;
bool quit = false;
while (!quit) {
ps_g = session_init(ps_old, argc, argv);
if (!ps_g) {
printf_errf("(): Failed to create new session.");
return 1;
}
session_run(ps_g);
ps_old = ps_g;
quit = ps_g->quit;
session_destroy(ps_g);
}
free(ps_g);
return 0;
}
// vim: set et sw=2 :