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picom/src/win.c

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// SPDX-License-Identifier: MIT
// Copyright (c) 2011-2013, Christopher Jeffrey
// Copyright (c) 2013 Richard Grenville <pyxlcy@gmail.com>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <xcb/xcb.h>
#include <xcb/render.h>
#include <xcb/damage.h>
#include <xcb/xcb_renderutil.h>
#include <stdbool.h>
#include <math.h>
#include <string.h>
#include <stdlib.h>
#include "compiler.h"
#include "common.h"
#include "config.h"
#include "compton.h"
#include "c2.h"
#include "x.h"
#include "string_utils.h"
#include "utils.h"
#include "log.h"
#include "types.h"
#include "region.h"
#include "render.h"
#ifdef CONFIG_DBUS
#include "dbus.h"
#endif
#include "win.h"
/// Generate a "return by value" function, from a function that returns the
/// region via a region_t pointer argument.
/// Function signature has to be (win *, region_t *)
#define gen_by_val(fun) region_t fun##_by_val(win *w) { \
region_t ret; \
pixman_region32_init(&ret); \
fun(w, &ret); \
return ret; \
}
/**
* Clear leader cache of all windows.
*/
static inline void
clear_cache_win_leaders(session_t *ps) {
for (win *w = ps->list; w; w = w->next)
w->cache_leader = XCB_NONE;
}
static inline void
wid_set_opacity_prop(session_t *ps, xcb_window_t wid, opacity_t val) {
const uint32_t v = val;
xcb_change_property(ps->c, XCB_PROP_MODE_REPLACE, wid, ps->atom_opacity,
XCB_ATOM_CARDINAL, 32, 1, &v);
}
static inline void
wid_rm_opacity_prop(session_t *ps, xcb_window_t wid) {
xcb_delete_property(ps->c, wid, ps->atom_opacity);
}
/**
* Run win_update_focused() on all windows with the same leader window.
*
* @param leader leader window ID
*/
static inline void
group_update_focused(session_t *ps, xcb_window_t leader) {
if (!leader)
return;
for (win *w = ps->list; w; w = w->next) {
if (win_get_leader(ps, w) == leader && !w->destroying)
win_update_focused(ps, w);
}
return;
}
/**
* Return whether a window group is really focused.
*
* @param leader leader window ID
* @return true if the window group is focused, false otherwise
*/
static inline bool
group_is_focused(session_t *ps, xcb_window_t leader) {
if (!leader)
return false;
for (win *w = ps->list; w; w = w->next) {
if (win_get_leader(ps, w) == leader && !w->destroying
&& win_is_focused_real(ps, w))
return true;
}
return false;
}
/**
* Get a rectangular region a window occupies, excluding shadow.
*/
static void win_get_region_local(session_t *ps, win *w, region_t *res) {
pixman_region32_fini(res);
pixman_region32_init_rect(res, 0, 0, w->widthb, w->heightb);
}
/**
* Get a rectangular region a window occupies, excluding frame and shadow.
*/
void win_get_region_noframe_local(win *w, region_t *res) {
const margin_t extents = win_calc_frame_extents(w);
int x = extents.left;
int y = extents.top;
int width = max_i(w->g.width - extents.left - extents.right, 0);
int height = max_i(w->g.height - extents.top - extents.bottom, 0);
pixman_region32_fini(res);
if (width > 0 && height > 0)
pixman_region32_init_rect(res, x, y, width, height);
}
gen_by_val(win_get_region_noframe_local)
/**
* Add a window to damaged area.
*
* @param ps current session
* @param w struct _win element representing the window
*/
void add_damage_from_win(session_t *ps, win *w) {
// XXX there was a cached extents region, investigate
// if that's better
region_t extents;
pixman_region32_init(&extents);
win_extents(w, &extents);
add_damage(ps, &extents);
pixman_region32_fini(&extents);
}
/**
* Check if a window has rounded corners.
* XXX This is really dumb
*/
void win_rounded_corners(session_t *ps, win *w) {
w->rounded_corners = false;
if (!w->bounding_shaped)
return;
// Quit if border_size() returns XCB_NONE
if (!pixman_region32_not_empty(&w->bounding_shape))
return;
// Determine the minimum width/height of a rectangle that could mark
// a window as having rounded corners
unsigned short minwidth = max_i(w->widthb * (1 - ROUNDED_PERCENT),
w->widthb - ROUNDED_PIXELS);
unsigned short minheight = max_i(w->heightb * (1 - ROUNDED_PERCENT),
w->heightb - ROUNDED_PIXELS);
// Get the rectangles in the bounding region
int nrects = 0;
const rect_t *rects = pixman_region32_rectangles(&w->bounding_shape, &nrects);
// Look for a rectangle large enough for this window be considered
// having rounded corners
for (int i = 0; i < nrects; ++i)
if (rects[i].x2 - rects[i].x1 >= minwidth && rects[i].y2 - rects[i].y1 >= minheight) {
w->rounded_corners = true;
break;
}
}
int win_get_name(session_t *ps, win *w) {
XTextProperty text_prop = { NULL, XCB_NONE, 0, 0 };
char **strlst = NULL;
int nstr = 0;
if (!w->client_win)
return 0;
if (!(wid_get_text_prop(ps, w->client_win, ps->atom_name_ewmh, &strlst, &nstr))) {
log_trace("(%#010x): _NET_WM_NAME unset, falling back to WM_NAME.", w->client_win);
if (!(XGetWMName(ps->dpy, w->client_win, &text_prop) && text_prop.value)) {
return -1;
}
if (Success !=
XmbTextPropertyToTextList(ps->dpy, &text_prop, &strlst, &nstr)
|| !nstr || !strlst) {
if (strlst)
XFreeStringList(strlst);
cxfree(text_prop.value);
return -1;
}
cxfree(text_prop.value);
}
int ret = 0;
if (!w->name || strcmp(w->name, strlst[0]) != 0) {
ret = 1;
free(w->name);
w->name = strdup(strlst[0]);
}
XFreeStringList(strlst);
log_trace("(%#010x): client = %#010x, name = \"%s\", "
"ret = %d", w->id, w->client_win, w->name, ret);
return ret;
}
int win_get_role(session_t *ps, win *w) {
char **strlst = NULL;
int nstr = 0;
if (!wid_get_text_prop(ps, w->client_win, ps->atom_role, &strlst, &nstr))
return -1;
int ret = 0;
if (!w->role || strcmp(w->role, strlst[0]) != 0) {
ret = 1;
free(w->role);
w->role = strdup(strlst[0]);
}
XFreeStringList(strlst);
log_trace("(%#010x): client = %#010x, role = \"%s\", "
"ret = %d", w->id, w->client_win, w->role, ret);
return ret;
}
/**
* Check if a window is bounding-shaped.
*/
static inline bool win_bounding_shaped(const session_t *ps, xcb_window_t wid) {
if (ps->shape_exists) {
xcb_shape_query_extents_reply_t *reply;
Bool bounding_shaped;
reply = xcb_shape_query_extents_reply(ps->c,
xcb_shape_query_extents(ps->c, wid), NULL);
bounding_shaped = reply && reply->bounding_shaped;
free(reply);
return bounding_shaped;
}
return false;
}
wintype_t wid_get_prop_wintype(session_t *ps, xcb_window_t wid) {
winprop_t prop = wid_get_prop(ps, wid, ps->atom_win_type, 32L, XCB_ATOM_ATOM, 32);
for (unsigned i = 0; i < prop.nitems; ++i) {
for (wintype_t j = 1; j < NUM_WINTYPES; ++j) {
if (ps->atoms_wintypes[j] == (xcb_atom_t)prop.p32[i]) {
free_winprop(&prop);
return j;
}
}
}
free_winprop(&prop);
return WINTYPE_UNKNOWN;
}
bool wid_get_opacity_prop(session_t *ps, xcb_window_t wid, opacity_t def,
opacity_t *out) {
bool ret = false;
*out = def;
winprop_t prop = wid_get_prop(ps, wid, ps->atom_opacity, 1L, XCB_ATOM_CARDINAL, 32);
if (prop.nitems) {
*out = *prop.c32;
ret = true;
}
free_winprop(&prop);
return ret;
}
// XXX should distinguish between frame has alpha and window body has alpha
bool win_has_alpha(win *w) {
return w->pictfmt &&
w->pictfmt->type == XCB_RENDER_PICT_TYPE_DIRECT &&
w->pictfmt->direct.alpha_mask;
}
void win_determine_mode(session_t *ps, win *w) {
if (win_has_alpha(w) || w->opacity != OPAQUE) {
w->mode = WMODE_TRANS;
} else if (w->frame_opacity != 1.0) {
w->mode = WMODE_FRAME_TRANS;
} else {
w->mode = WMODE_SOLID;
}
}
/**
* Calculate and set the opacity of a window.
*
* If window is inactive and inactive_opacity_override is set, the
* priority is: (Simulates the old behavior)
*
* inactive_opacity > _NET_WM_WINDOW_OPACITY (if not opaque)
* > window type default opacity
*
* Otherwise:
*
* _NET_WM_WINDOW_OPACITY (if not opaque)
* > window type default opacity (if not opaque)
* > inactive_opacity
*
* @param ps current session
* @param w struct _win object representing the window
*/
void win_calc_opacity(session_t *ps, win *w) {
opacity_t opacity = OPAQUE;
if (w->destroying || w->a.map_state != XCB_MAP_STATE_VIEWABLE)
opacity = 0;
else {
// Try obeying opacity property and window type opacity firstly
if (w->has_opacity_prop)
opacity = w->opacity_prop;
else if (!safe_isnan(ps->o.wintype_option[w->window_type].opacity))
opacity = ps->o.wintype_option[w->window_type].opacity * OPAQUE;
else {
// Respect active_opacity only when the window is physically focused
if (win_is_focused_real(ps, w))
opacity = ps->o.active_opacity;
else if (false == w->focused)
// Respect inactive_opacity in some cases
opacity = ps->o.inactive_opacity;
}
// respect inactive override
if (ps->o.inactive_opacity_override && false == w->focused)
opacity = ps->o.inactive_opacity;
}
w->opacity_tgt = opacity;
}
/**
* Determine whether a window is to be dimmed.
*/
void win_calc_dim(session_t *ps, win *w) {
bool dim;
// Make sure we do nothing if the window is unmapped / being destroyed
if (w->destroying || w->a.map_state != XCB_MAP_STATE_VIEWABLE)
return;
if (ps->o.inactive_dim && !(w->focused)) {
dim = true;
} else {
dim = false;
}
if (dim != w->dim) {
w->dim = dim;
add_damage_from_win(ps, w);
}
}
/**
* Determine if a window should fade on opacity change.
*/
void win_determine_fade(session_t *ps, win *w) {
// To prevent it from being overwritten by last-paint value if the window is
// unmapped on next frame, write w->fade_last as well
if (UNSET != w->fade_force)
w->fade_last = w->fade = w->fade_force;
else if (ps->o.no_fading_openclose && w->in_openclose)
w->fade_last = w->fade = false;
else if (ps->o.no_fading_destroyed_argb && w->destroying &&
win_has_alpha(w) && w->client_win && w->client_win != w->id) {
w->fade_last = w->fade = false;
}
// Ignore other possible causes of fading state changes after window
// gets unmapped
else if (w->a.map_state != XCB_MAP_STATE_VIEWABLE) {
} else if (c2_match(ps, w, ps->o.fade_blacklist, &w->cache_fblst, NULL))
w->fade = false;
else
w->fade = ps->o.wintype_option[w->window_type].fade;
}
/**
* Reread _COMPTON_SHADOW property from a window.
*
* The property must be set on the outermost window, usually the WM frame.
*/
void win_update_prop_shadow_raw(session_t *ps, win *w) {
winprop_t prop =
wid_get_prop(ps, w->id, ps->atom_compton_shadow, 1, XCB_ATOM_CARDINAL, 32);
if (!prop.nitems) {
w->prop_shadow = -1;
} else {
w->prop_shadow = *prop.c32;
}
free_winprop(&prop);
}
/**
* Reread _COMPTON_SHADOW property from a window and update related
* things.
*/
void win_update_prop_shadow(session_t *ps, win *w) {
long attr_shadow_old = w->prop_shadow;
win_update_prop_shadow_raw(ps, w);
if (w->prop_shadow != attr_shadow_old)
win_determine_shadow(ps, w);
}
void win_set_shadow(session_t *ps, win *w, bool shadow_new) {
if (w->shadow == shadow_new)
return;
region_t extents;
pixman_region32_init(&extents);
win_extents(w, &extents);
w->shadow = shadow_new;
// Window extents need update on shadow state change
// Shadow geometry currently doesn't change on shadow state change
// calc_shadow_geometry(ps, w);
// Mark the old extents as damaged if the shadow is removed
if (!w->shadow)
add_damage(ps, &extents);
pixman_region32_clear(&extents);
// Mark the new extents as damaged if the shadow is added
if (w->shadow) {
win_extents(w, &extents);
add_damage_from_win(ps, w);
}
pixman_region32_fini(&extents);
}
/**
* Determine if a window should have shadow, and update things depending
* on shadow state.
*/
void win_determine_shadow(session_t *ps, win *w) {
bool shadow_new = w->shadow;
if (UNSET != w->shadow_force)
shadow_new = w->shadow_force;
else if (w->a.map_state == XCB_MAP_STATE_VIEWABLE)
shadow_new = (ps->o.wintype_option[w->window_type].shadow &&
!c2_match(ps, w, ps->o.shadow_blacklist, &w->cache_sblst, NULL) &&
!(ps->o.shadow_ignore_shaped && w->bounding_shaped &&
!w->rounded_corners) &&
!(ps->o.respect_prop_shadow && 0 == w->prop_shadow));
win_set_shadow(ps, w, shadow_new);
}
void win_set_invert_color(session_t *ps, win *w, bool invert_color_new) {
if (w->invert_color == invert_color_new)
return;
w->invert_color = invert_color_new;
add_damage_from_win(ps, w);
}
/**
* Determine if a window should have color inverted.
*/
void win_determine_invert_color(session_t *ps, win *w) {
bool invert_color_new = w->invert_color;
if (UNSET != w->invert_color_force)
invert_color_new = w->invert_color_force;
else if (w->a.map_state == XCB_MAP_STATE_VIEWABLE)
invert_color_new =
c2_match(ps, w, ps->o.invert_color_list, &w->cache_ivclst, NULL);
win_set_invert_color(ps, w, invert_color_new);
}
void win_set_blur_background(session_t *ps, win *w, bool blur_background_new) {
if (w->blur_background == blur_background_new)
return;
w->blur_background = blur_background_new;
// Only consider window damaged if it's previously painted with background
// blurred
if (!win_is_solid(ps, w) || (ps->o.blur_background_frame && w->frame_opacity != 1))
add_damage_from_win(ps, w);
}
/**
* Determine if a window should have background blurred.
*/
void win_determine_blur_background(session_t *ps, win *w) {
if (w->a.map_state != XCB_MAP_STATE_VIEWABLE)
return;
bool blur_background_new =
ps->o.blur_background &&
!c2_match(ps, w, ps->o.blur_background_blacklist, &w->cache_bbblst, NULL);
win_set_blur_background(ps, w, blur_background_new);
}
/**
* Update window opacity according to opacity rules.
*/
void win_update_opacity_rule(session_t *ps, win *w) {
if (w->a.map_state != XCB_MAP_STATE_VIEWABLE)
return;
opacity_t opacity = OPAQUE;
bool is_set = false;
void *val = NULL;
if (c2_match(ps, w, ps->o.opacity_rules, &w->cache_oparule, &val)) {
opacity = ((double)(long)val) / 100.0 * OPAQUE;
is_set = true;
}
if (is_set == w->opacity_is_set && opacity == w->opacity_set)
return;
w->opacity_set = opacity;
w->opacity_is_set = is_set;
if (!is_set)
wid_rm_opacity_prop(ps, w->id);
else
wid_set_opacity_prop(ps, w->id, opacity);
}
/**
* Function to be called on window type changes.
*/
void win_on_wtype_change(session_t *ps, win *w) {
win_determine_shadow(ps, w);
win_determine_fade(ps, w);
win_update_focused(ps, w);
if (ps->o.invert_color_list)
win_determine_invert_color(ps, w);
if (ps->o.opacity_rules)
win_update_opacity_rule(ps, w);
}
/**
* Function to be called on window data changes.
*/
void win_on_factor_change(session_t *ps, win *w) {
if (ps->o.shadow_blacklist)
win_determine_shadow(ps, w);
if (ps->o.fade_blacklist)
win_determine_fade(ps, w);
if (ps->o.invert_color_list)
win_determine_invert_color(ps, w);
if (ps->o.focus_blacklist)
win_update_focused(ps, w);
if (ps->o.blur_background_blacklist)
win_determine_blur_background(ps, w);
if (ps->o.opacity_rules)
win_update_opacity_rule(ps, w);
if (w->a.map_state == XCB_MAP_STATE_VIEWABLE && ps->o.paint_blacklist)
w->paint_excluded =
c2_match(ps, w, ps->o.paint_blacklist, &w->cache_pblst, NULL);
if (w->a.map_state == XCB_MAP_STATE_VIEWABLE && ps->o.unredir_if_possible_blacklist)
w->unredir_if_possible_excluded = c2_match(
ps, w, ps->o.unredir_if_possible_blacklist, &w->cache_uipblst, NULL);
w->reg_ignore_valid = false;
}
/**
* Update cache data in struct _win that depends on window size.
*/
void calc_win_size(session_t *ps, win *w) {
w->widthb = w->g.width + w->g.border_width * 2;
w->heightb = w->g.height + w->g.border_width * 2;
calc_shadow_geometry(ps, w);
w->flags |= WFLAG_SIZE_CHANGE;
// Invalidate the shadow we built
free_paint(ps, &w->shadow_paint);
}
/**
* Calculate and update geometry of the shadow of a window.
*/
void calc_shadow_geometry(session_t *ps, win *w) {
w->shadow_dx = ps->o.shadow_offset_x;
w->shadow_dy = ps->o.shadow_offset_y;
w->shadow_width = w->widthb + ps->o.shadow_radius * 2;
w->shadow_height = w->heightb + ps->o.shadow_radius * 2;
}
/**
* Update window type.
*/
void win_upd_wintype(session_t *ps, win *w) {
const wintype_t wtype_old = w->window_type;
// Detect window type here
w->window_type = wid_get_prop_wintype(ps, w->client_win);
// Conform to EWMH standard, if _NET_WM_WINDOW_TYPE is not present, take
// override-redirect windows or windows without WM_TRANSIENT_FOR as
// _NET_WM_WINDOW_TYPE_NORMAL, otherwise as _NET_WM_WINDOW_TYPE_DIALOG.
if (WINTYPE_UNKNOWN == w->window_type) {
if (w->a.override_redirect ||
!wid_has_prop(ps, w->client_win, ps->atom_transient))
w->window_type = WINTYPE_NORMAL;
else
w->window_type = WINTYPE_DIALOG;
}
if (w->window_type != wtype_old)
win_on_wtype_change(ps, w);
}
/**
* Mark a window as the client window of another.
*
* @param ps current session
* @param w struct _win of the parent window
* @param client window ID of the client window
*/
void win_mark_client(session_t *ps, win *w, xcb_window_t client) {
w->client_win = client;
// If the window isn't mapped yet, stop here, as the function will be
// called in map_win()
if (w->a.map_state != XCB_MAP_STATE_VIEWABLE)
return;
auto e = xcb_request_check(
ps->c, xcb_change_window_attributes(
ps->c, client, XCB_CW_EVENT_MASK,
(const uint32_t[]){determine_evmask(ps, client, WIN_EVMODE_CLIENT)}));
if (e) {
log_error("Failed to change event mask of window %#010x", client);
free(e);
}
win_upd_wintype(ps, w);
// Get frame widths. The window is in damaged area already.
if (ps->o.frame_opacity != 1)
win_update_frame_extents(ps, w, client);
// Get window group
if (ps->o.track_leader)
win_update_leader(ps, w);
// Get window name and class if we are tracking them
if (ps->o.track_wdata) {
win_get_name(ps, w);
win_get_class(ps, w);
win_get_role(ps, w);
}
// Update everything related to conditions
win_on_factor_change(ps, w);
// Update window focus state
win_update_focused(ps, w);
}
/**
* Unmark current client window of a window.
*
* @param ps current session
* @param w struct _win of the parent window
*/
void win_unmark_client(session_t *ps, win *w) {
xcb_window_t client = w->client_win;
w->client_win = XCB_NONE;
// Recheck event mask
xcb_change_window_attributes(ps->c, client, XCB_CW_EVENT_MASK,
(const uint32_t[]) { determine_evmask(ps, client, WIN_EVMODE_UNKNOWN) });
}
/**
* Recheck client window of a window.
*
* @param ps current session
* @param w struct _win of the parent window
*/
void win_recheck_client(session_t *ps, win *w) {
// Initialize wmwin to false
w->wmwin = false;
// Look for the client window
// Always recursively look for a window with WM_STATE, as Fluxbox
// sets override-redirect flags on all frame windows.
xcb_window_t cw = find_client_win(ps, w->id);
if (cw)
log_trace("(%#010x): client %#010x", w->id, cw);
// Set a window's client window to itself if we couldn't find a
// client window
if (!cw) {
cw = w->id;
w->wmwin = !w->a.override_redirect;
log_trace("(%#010x): client self (%s)", w->id,
(w->wmwin ? "wmwin" : "override-redirected"));
}
// Unmark the old one
if (w->client_win && w->client_win != cw)
win_unmark_client(ps, w);
// Mark the new one
win_mark_client(ps, w, cw);
}
// TODO: probably split into win_new (in win.c) and add_win (in compton.c)
bool add_win(session_t *ps, xcb_window_t id, xcb_window_t prev) {
static const win win_def = {
.win_data = NULL,
.next = NULL,
.prev_trans = NULL,
.id = XCB_NONE,
.a = {},
#ifdef CONFIG_XINERAMA
.xinerama_scr = -1,
#endif
.pictfmt = NULL,
.mode = WMODE_TRANS,
.ever_damaged = false,
.damage = XCB_NONE,
.pixmap_damaged = false,
.paint = PAINT_INIT,
.flags = 0,
.need_configure = false,
.queue_configure = {},
.reg_ignore = NULL,
.reg_ignore_valid = false,
.widthb = 0,
.heightb = 0,
.destroying = false,
.bounding_shaped = false,
.rounded_corners = false,
.to_paint = false,
.in_openclose = false,
.client_win = XCB_NONE,
.window_type = WINTYPE_UNKNOWN,
.wmwin = false,
.leader = XCB_NONE,
.cache_leader = XCB_NONE,
.focused = false,
.focused_force = UNSET,
.name = NULL,
.class_instance = NULL,
.class_general = NULL,
.role = NULL,
.cache_sblst = NULL,
.cache_fblst = NULL,
.cache_fcblst = NULL,
.cache_ivclst = NULL,
.cache_bbblst = NULL,
.cache_oparule = NULL,
.opacity = 0,
.opacity_tgt = 0,
.has_opacity_prop = false,
.opacity_prop = OPAQUE,
.opacity_is_set = false,
.opacity_set = OPAQUE,
.fade = false,
.fade_force = UNSET,
.fade_callback = NULL,
.frame_opacity = 1.0,
.frame_extents = MARGIN_INIT,
.shadow = false,
.shadow_force = UNSET,
.shadow_opacity = 0.0,
.shadow_dx = 0,
.shadow_dy = 0,
.shadow_width = 0,
.shadow_height = 0,
.shadow_paint = PAINT_INIT,
.prop_shadow = -1,
.dim = false,
.invert_color = false,
.invert_color_force = UNSET,
.blur_background = false,
};
// Reject overlay window and already added windows
if (id == ps->overlay || find_win(ps, id)) {
return false;
}
// Allocate and initialize the new win structure
auto new = cmalloc(win);
log_trace("(%#010x): %p", id, new);
*new = win_def;
pixman_region32_init(&new->bounding_shape);
// Find window insertion point
win **p = NULL;
if (prev) {
for (p = &ps->list; *p; p = &(*p)->next) {
if ((*p)->id == prev && !(*p)->destroying)
break;
}
} else {
p = &ps->list;
}
// Fill structure
new->id = id;
xcb_get_window_attributes_cookie_t acookie = xcb_get_window_attributes(ps->c, id);
xcb_get_geometry_cookie_t gcookie = xcb_get_geometry(ps->c, id);
xcb_get_window_attributes_reply_t *a = xcb_get_window_attributes_reply(ps->c, acookie, NULL);
xcb_get_geometry_reply_t *g = xcb_get_geometry_reply(ps->c, gcookie, NULL);
if (!a || a->map_state == XCB_MAP_STATE_UNVIEWABLE) {
// Failed to get window attributes probably means the window is gone
// already. Unviewable means the window is already reparented
// elsewhere.
free(a);
free(g);
free(new);
return false;
}
new->a = *a;
free(a);
if (!g) {
free(new);
return false;
}
new->g = *g;
free(g);
// Delay window mapping
int map_state = new->a.map_state;
assert(map_state == XCB_MAP_STATE_VIEWABLE || map_state == XCB_MAP_STATE_UNMAPPED);
new->a.map_state = XCB_MAP_STATE_UNMAPPED;
if (InputOutput == new->a._class) {
// Create Damage for window
new->damage = xcb_generate_id(ps->c);
xcb_generic_error_t *e = xcb_request_check(ps->c,
xcb_damage_create_checked(ps->c, new->damage, id, XCB_DAMAGE_REPORT_LEVEL_NON_EMPTY));
if (e) {
free(e);
free(new);
return false;
}
new->pictfmt = x_get_pictform_for_visual(ps->c, new->a.visual);
}
calc_win_size(ps, new);
new->next = *p;
*p = new;
win_update_bounding_shape(ps, new);
#ifdef CONFIG_DBUS
// Send D-Bus signal
if (ps->o.dbus) {
cdbus_ev_win_added(ps, new);
}
#endif
if (map_state == XCB_MAP_STATE_VIEWABLE) {
map_win(ps, id);
}
return true;
}
/**
* Update focused state of a window.
*/
void win_update_focused(session_t *ps, win *w) {
if (UNSET != w->focused_force) {
w->focused = w->focused_force;
}
else {
w->focused = win_is_focused_real(ps, w);
// Use wintype_focus, and treat WM windows and override-redirected
// windows specially
if (ps->o.wintype_option[w->window_type].focus
|| (ps->o.mark_wmwin_focused && w->wmwin)
|| (ps->o.mark_ovredir_focused &&
w->id == w->client_win && !w->wmwin)
|| (w->a.map_state == XCB_MAP_STATE_VIEWABLE &&
c2_match(ps, w, ps->o.focus_blacklist, &w->cache_fcblst, NULL)))
w->focused = true;
// If window grouping detection is enabled, mark the window active if
// its group is
if (ps->o.track_leader && ps->active_leader
&& win_get_leader(ps, w) == ps->active_leader) {
w->focused = true;
}
}
// Always recalculate the window target opacity, since some opacity-related
// options depend on the output value of win_is_focused_real() instead of
// w->focused
w->flags |= WFLAG_OPCT_CHANGE;
}
/**
* Set leader of a window.
*/
static inline void win_set_leader(session_t *ps, win *w, xcb_window_t nleader) {
// If the leader changes
if (w->leader != nleader) {
xcb_window_t cache_leader_old = win_get_leader(ps, w);
w->leader = nleader;
// Forcefully do this to deal with the case when a child window
// gets mapped before parent, or when the window is a waypoint
clear_cache_win_leaders(ps);
// Update the old and new window group and active_leader if the window
// could affect their state.
xcb_window_t cache_leader = win_get_leader(ps, w);
if (win_is_focused_real(ps, w) && cache_leader_old != cache_leader) {
ps->active_leader = cache_leader;
group_update_focused(ps, cache_leader_old);
group_update_focused(ps, cache_leader);
}
// Otherwise, at most the window itself is affected
else {
win_update_focused(ps, w);
}
// Update everything related to conditions
win_on_factor_change(ps, w);
}
}
/**
* Update leader of a window.
*/
void win_update_leader(session_t *ps, win *w) {
xcb_window_t leader = XCB_NONE;
// Read the leader properties
if (ps->o.detect_transient && !leader)
leader = wid_get_prop_window(ps, w->client_win, ps->atom_transient);
if (ps->o.detect_client_leader && !leader)
leader = wid_get_prop_window(ps, w->client_win, ps->atom_client_leader);
win_set_leader(ps, w, leader);
log_trace("(%#010x): client %#010x, leader %#010x, cache %#010x",
w->id, w->client_win, w->leader, win_get_leader(ps, w));
}
/**
* Internal function of win_get_leader().
*/
xcb_window_t win_get_leader_raw(session_t *ps, win *w, int recursions) {
// Rebuild the cache if needed
if (!w->cache_leader && (w->client_win || w->leader)) {
// Leader defaults to client window
if (!(w->cache_leader = w->leader))
w->cache_leader = w->client_win;
// If the leader of this window isn't itself, look for its ancestors
if (w->cache_leader && w->cache_leader != w->client_win) {
win *wp = find_toplevel(ps, w->cache_leader);
if (wp) {
// Dead loop?
if (recursions > WIN_GET_LEADER_MAX_RECURSION)
return XCB_NONE;
w->cache_leader = win_get_leader_raw(ps, wp, recursions + 1);
}
}
}
return w->cache_leader;
}
/**
* Retrieve the <code>WM_CLASS</code> of a window and update its
* <code>win</code> structure.
*/
bool win_get_class(session_t *ps, win *w) {
char **strlst = NULL;
int nstr = 0;
// Can't do anything if there's no client window
if (!w->client_win)
return false;
// Free and reset old strings
free(w->class_instance);
free(w->class_general);
w->class_instance = NULL;
w->class_general = NULL;
// Retrieve the property string list
if (!wid_get_text_prop(ps, w->client_win, ps->atom_class, &strlst, &nstr))
return false;
// Copy the strings if successful
w->class_instance = strdup(strlst[0]);
if (nstr > 1)
w->class_general = strdup(strlst[1]);
XFreeStringList(strlst);
log_trace("(%#010x): client = %#010x, "
"instance = \"%s\", general = \"%s\"",
w->id, w->client_win, w->class_instance, w->class_general);
return true;
}
/**
* Handle window focus change.
*/
static void
win_on_focus_change(session_t *ps, win *w) {
// If window grouping detection is enabled
if (ps->o.track_leader) {
xcb_window_t leader = win_get_leader(ps, w);
// If the window gets focused, replace the old active_leader
if (win_is_focused_real(ps, w) && leader != ps->active_leader) {
xcb_window_t active_leader_old = ps->active_leader;
ps->active_leader = leader;
group_update_focused(ps, active_leader_old);
group_update_focused(ps, leader);
}
// If the group get unfocused, remove it from active_leader
else if (!win_is_focused_real(ps, w) && leader && leader == ps->active_leader
&& !group_is_focused(ps, leader)) {
ps->active_leader = XCB_NONE;
group_update_focused(ps, leader);
}
// The window itself must be updated anyway
win_update_focused(ps, w);
}
// Otherwise, only update the window itself
else {
win_update_focused(ps, w);
}
// Update everything related to conditions
win_on_factor_change(ps, w);
#ifdef CONFIG_DBUS
// Send D-Bus signal
if (ps->o.dbus) {
if (win_is_focused_real(ps, w))
cdbus_ev_win_focusin(ps, w);
else
cdbus_ev_win_focusout(ps, w);
}
#endif
}
/**
* Set real focused state of a window.
*/
void
win_set_focused(session_t *ps, win *w, bool focused) {
// Unmapped windows will have their focused state reset on map
if (w->a.map_state == XCB_MAP_STATE_UNMAPPED)
return;
if (win_is_focused_real(ps, w) == focused) return;
if (focused) {
if (ps->active_win)
win_set_focused(ps, ps->active_win, false);
ps->active_win = w;
}
else if (w == ps->active_win)
ps->active_win = NULL;
assert(win_is_focused_real(ps, w) == focused);
win_on_focus_change(ps, w);
}
/**
* Get a rectangular region a window (and possibly its shadow) occupies.
*
* Note w->shadow and shadow geometry must be correct before calling this
* function.
*/
void win_extents(win *w, region_t *res) {
pixman_region32_clear(res);
pixman_region32_union_rect(res, res, w->g.x, w->g.y, w->widthb, w->heightb);
if (w->shadow)
pixman_region32_union_rect(res, res, w->g.x + w->shadow_dx,
w->g.y + w->shadow_dy, w->shadow_width, w->shadow_height);
}
gen_by_val(win_extents)
/**
* Update the out-dated bounding shape of a window.
*
* Mark the window shape as updated
*/
void win_update_bounding_shape(session_t *ps, win *w) {
if (ps->shape_exists)
w->bounding_shaped = win_bounding_shaped(ps, w->id);
pixman_region32_clear(&w->bounding_shape);
// Start with the window rectangular region
win_get_region_local(ps, w, &w->bounding_shape);
// Only request for a bounding region if the window is shaped
// (while loop is used to avoid goto, not an actual loop)
while (w->bounding_shaped) {
/*
* if window doesn't exist anymore, this will generate an error
* as well as not generate a region.
*/
xcb_shape_get_rectangles_reply_t *r = xcb_shape_get_rectangles_reply(ps->c,
xcb_shape_get_rectangles(ps->c, w->id, XCB_SHAPE_SK_BOUNDING), NULL);
if (!r)
break;
xcb_rectangle_t *xrects = xcb_shape_get_rectangles_rectangles(r);
int nrects = xcb_shape_get_rectangles_rectangles_length(r);
rect_t *rects = from_x_rects(nrects, xrects);
free(r);
region_t br;
pixman_region32_init_rects(&br, rects, nrects);
free(rects);
// Add border width because we are using a different origin.
// X thinks the top left of the inner window is the origin,
// We think the top left of the border is the origin
pixman_region32_translate(&br, w->g.border_width, w->g.border_width);
// Intersect the bounding region we got with the window rectangle, to
// make sure the bounding region is not bigger than the window
// rectangle
pixman_region32_intersect(&w->bounding_shape, &w->bounding_shape, &br);
pixman_region32_fini(&br);
break;
}
if (w->bounding_shaped && ps->o.detect_rounded_corners)
win_rounded_corners(ps, w);
// Window shape changed, we should free old wpaint and shadow pict
free_paint(ps, &w->paint);
free_paint(ps, &w->shadow_paint);
//log_trace("free out dated pict");
win_on_factor_change(ps, w);
}
/**
* Reread opacity property of a window.
*/
void win_update_opacity_prop(session_t *ps, win *w) {
// get frame opacity first
w->has_opacity_prop =
wid_get_opacity_prop(ps, w->id, OPAQUE, &w->opacity_prop);
if (w->has_opacity_prop)
// opacity found
return;
if (ps->o.detect_client_opacity && w->client_win && w->id == w->client_win)
// checking client opacity not allowed
return;
// get client opacity
w->has_opacity_prop =
wid_get_opacity_prop(ps, w->client_win, OPAQUE, &w->opacity_prop);
}
/**
* Retrieve frame extents from a window.
*/
void
win_update_frame_extents(session_t *ps, win *w, xcb_window_t client) {
winprop_t prop = wid_get_prop(ps, client, ps->atom_frame_extents,
4L, XCB_ATOM_CARDINAL, 32);
if (prop.nitems == 4) {
const uint32_t * const extents = prop.c32;
const bool changed = w->frame_extents.left != extents[0] ||
w->frame_extents.right != extents[1] ||
w->frame_extents.top != extents[2] ||
w->frame_extents.bottom != extents[3];
w->frame_extents.left = extents[0];
w->frame_extents.right = extents[1];
w->frame_extents.top = extents[2];
w->frame_extents.bottom = extents[3];
// If frame_opacity != 1, then frame of this window
// is not included in reg_ignore of underneath windows
if (ps->o.frame_opacity == 1 && changed)
w->reg_ignore_valid = false;
}
log_trace("(%#010x): %d, %d, %d, %d", w->id,
w->frame_extents.left, w->frame_extents.right,
w->frame_extents.top, w->frame_extents.bottom);
free_winprop(&prop);
}
bool win_is_region_ignore_valid(session_t *ps, win *w) {
for(win *i = ps->list; w; w = w->next) {
if (i == w)
break;
if (!i->reg_ignore_valid)
return false;
}
return true;
}
/**
* Stop listening for events on a particular window.
*/
void win_ev_stop(session_t *ps, win *w) {
// Will get BadWindow if the window is destroyed
set_ignore_cookie(ps,
xcb_change_window_attributes(ps->c, w->id, XCB_CW_EVENT_MASK, (const uint32_t[]) { 0 }));
if (w->client_win) {
set_ignore_cookie(ps,
xcb_change_window_attributes(ps->c, w->client_win, XCB_CW_EVENT_MASK, (const uint32_t[]) { 0 }));
}
if (ps->shape_exists) {
set_ignore_cookie(ps,
xcb_shape_select_input(ps->c, w->id, 0));
}
}
/**
* 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 win_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.
*/
void
win_check_fade_finished(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!
win_set_fade_callback(ps, _w, NULL, true);
}
}
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