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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 <math.h>
#include <stdbool.h>
#include <stdlib.h>
#include <string.h>
#include <xcb/composite.h>
#include <xcb/damage.h>
#include <xcb/render.h>
#include <xcb/xcb.h>
#include <xcb/xcb_renderutil.h>
#include <xcb/xinerama.h>
#include "atom.h"
#include "backend/backend.h"
#include "c2.h"
#include "common.h"
#include "compiler.h"
#include "compton.h"
#include "config.h"
#include "list.h"
#include "log.h"
#include "region.h"
#include "render.h"
#include "string_utils.h"
#include "types.h"
#include "uthash_extra.h"
#include "utils.h"
#include "x.h"
#ifdef CONFIG_DBUS
#include "dbus.h"
#endif
#ifdef CONFIG_OPENGL
// TODO remove this include
#include "opengl.h"
#endif
#include "win.h"
#define OPAQUE (0xffffffff)
static const int WIN_GET_LEADER_MAX_RECURSION = 20;
static const int ROUNDED_PIXELS = 1;
static const double ROUNDED_PERCENT = 0.05;
/// 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(const struct managed_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) {
win_stack_foreach_managed(w, &ps->window_stack) {
w->cache_leader = XCB_NONE;
}
}
static xcb_window_t win_get_leader_raw(session_t *ps, struct managed_win *w, int recursions);
/**
* Get the leader of a window.
*
* This function updates w->cache_leader if necessary.
*/
static inline xcb_window_t win_get_leader(session_t *ps, struct managed_win *w) {
return win_get_leader_raw(ps, w, 0);
}
/**
* Update focused state of a window.
*/
static void win_update_focused(session_t *ps, struct managed_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->base.id == w->client_win && !w->wmwin) ||
(w->a.map_state == XCB_MAP_STATE_VIEWABLE &&
c2_match(ps, w, ps->o.focus_blacklist, 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
auto opacity_target_old = w->opacity_target;
w->opacity_target = win_calc_opacity_target(ps, w, false);
if (opacity_target_old != w->opacity_target && w->state == WSTATE_MAPPED) {
// Only MAPPED can transition to FADING
w->state = WSTATE_FADING;
}
}
/**
* 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;
HASH_ITER2(ps->windows, w) {
assert(!w->destroyed);
if (!w->managed) {
continue;
}
auto mw = (struct managed_win *)w;
if (win_get_leader(ps, mw) == leader) {
win_update_focused(ps, mw);
}
}
return;
}
static inline const char *win_get_name_if_managed(const struct win *w) {
if (!w->managed) {
return "(unmanaged)";
}
auto mw = (struct managed_win *)w;
return mw->name;
}
/**
* 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;
}
HASH_ITER2(ps->windows, w) {
assert(!w->destroyed);
if (!w->managed) {
continue;
}
auto mw = (struct managed_win *)w;
if (win_get_leader(ps, mw) == leader && win_is_focused_real(ps, mw)) {
return true;
}
}
return false;
}
/**
* Get a rectangular region a window occupies, excluding shadow.
*/
static void win_get_region_local(const struct managed_win *w, region_t *res) {
assert(w->widthb >= 0 && w->heightb >= 0);
pixman_region32_fini(res);
pixman_region32_init_rect(res, 0, 0, (uint)w->widthb, (uint)w->heightb);
}
/**
* Get a rectangular region a window occupies, excluding frame and shadow.
*/
void win_get_region_noframe_local(const struct managed_win *w, region_t *res) {
const margin_t extents = win_calc_frame_extents(w);
int x = extents.left;
int y = extents.top;
int width = max2(w->g.width - (extents.left + extents.right), 0);
int height = max2(w->g.height - (extents.top + extents.bottom), 0);
pixman_region32_fini(res);
if (width > 0 && height > 0) {
pixman_region32_init_rect(res, x, y, (uint)width, (uint)height);
}
}
void win_get_region_frame_local(const struct managed_win *w, region_t *res) {
const margin_t extents = win_calc_frame_extents(w);
pixman_region32_fini(res);
pixman_region32_init_rects(
res,
(rect_t[]){
// top
{.x1 = 0, .y1 = 0, .x2 = w->g.width, .y2 = extents.top},
// bottom
{.x1 = 0, .y1 = w->g.height - extents.bottom, .x2 = w->g.width, .y2 = w->g.height},
// left
{.x1 = 0, .y1 = 0, .x2 = extents.left, .y2 = w->g.height},
// right
{.x1 = w->g.width - extents.right, .y1 = 0, .x2 = w->g.width, .y2 = w->g.height},
},
4);
// limit the frame region to inside the window
region_t reg_win;
pixman_region32_init_rect(&reg_win, 0, 0, w->g.width, w->g.height);
pixman_region32_intersect(res, &reg_win, res);
pixman_region32_fini(&reg_win);
}
gen_by_val(win_get_region_frame_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, const struct managed_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);
}
/// Release the images attached to this window
void win_release_image(backend_t *base, struct managed_win *w) {
log_debug("Releasing image of window %#010x (%s)", w->base.id, w->name);
assert(w->win_image || (w->flags & WIN_FLAGS_IMAGE_ERROR));
if (w->win_image) {
base->ops->release_image(base, w->win_image);
w->win_image = NULL;
}
if (w->shadow) {
assert(w->shadow_image || (w->flags & WIN_FLAGS_IMAGE_ERROR));
if (w->shadow_image) {
base->ops->release_image(base, w->shadow_image);
w->shadow_image = NULL;
}
}
}
static inline bool
_win_bind_image(session_t *ps, struct managed_win *w, void **win_image, void **shadow_image) {
auto pixmap = x_new_id(ps->c);
auto e = xcb_request_check(
ps->c, xcb_composite_name_window_pixmap_checked(ps->c, w->base.id, pixmap));
if (e) {
log_error("Failed to get named pixmap for window %#010x(%s)", w->base.id,
w->name);
free(e);
return false;
}
log_trace("New named pixmap for %#010x (%s) : %#010x", w->base.id, w->name, pixmap);
*win_image = ps->backend_data->ops->bind_pixmap(
ps->backend_data, pixmap, x_get_visual_info(ps->c, w->a.visual), true);
if (!*win_image) {
return false;
}
if (w->shadow) {
*shadow_image = ps->backend_data->ops->render_shadow(
ps->backend_data, w->widthb, w->heightb, ps->gaussian_map, ps->o.shadow_red,
ps->o.shadow_green, ps->o.shadow_blue, ps->o.shadow_opacity);
if (!*shadow_image) {
log_error("Failed to bind shadow image");
ps->backend_data->ops->release_image(ps->backend_data, *win_image);
*win_image = NULL;
return false;
}
}
return true;
}
bool win_bind_image(session_t *ps, struct managed_win *w) {
assert(!w->win_image && !w->shadow_image);
return _win_bind_image(ps, w, &w->win_image, &w->shadow_image);
}
bool win_try_rebind_image(session_t *ps, struct managed_win *w) {
log_trace("Freeing old window image");
// Must release first, otherwise breaks NVIDIA driver
win_release_image(ps->backend_data, w);
return win_bind_image(ps, w);
}
/**
* Check if a window has rounded corners.
* XXX This is really dumb
*/
static bool attr_pure win_has_rounded_corners(const struct managed_win *w) {
if (!w->bounding_shaped) {
return false;
}
// Quit if border_size() returns XCB_NONE
if (!pixman_region32_not_empty((region_t *)&w->bounding_shape)) {
return false;
}
// Determine the minimum width/height of a rectangle that could mark
// a window as having rounded corners
auto minwidth =
(uint16_t)max2(w->widthb * (1 - ROUNDED_PERCENT), w->widthb - ROUNDED_PIXELS);
auto minheight =
(uint16_t)max2(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((region_t *)&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) {
return true;
}
}
return false;
}
int win_get_name(session_t *ps, struct managed_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->atoms->a_NET_WM_NAME, &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);
XFree(text_prop.value);
return -1;
}
XFree(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->base.id, w->client_win, w->name, ret);
return ret;
}
int win_get_role(session_t *ps, struct managed_win *w) {
char **strlst = NULL;
int nstr = 0;
if (!wid_get_text_prop(ps, w->client_win, ps->atoms->aWM_WINDOW_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->base.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;
}
static wintype_t wid_get_prop_wintype(session_t *ps, xcb_window_t wid) {
winprop_t prop =
wid_get_prop(ps, wid, ps->atoms->a_NET_WM_WINDOW_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;
}
static 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->atoms->a_NET_WM_WINDOW_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(const struct managed_win *w) {
return w->pictfmt && w->pictfmt->type == XCB_RENDER_PICT_TYPE_DIRECT &&
w->pictfmt->direct.alpha_mask;
}
bool win_client_has_alpha(const struct managed_win *w) {
return w->client_pictfmt && w->client_pictfmt->type == XCB_RENDER_PICT_TYPE_DIRECT &&
w->client_pictfmt->direct.alpha_mask;
}
winmode_t win_calc_mode(const struct managed_win *w) {
if (w->opacity < 1.0) {
return WMODE_TRANS;
}
if (w->frame_opacity != 1.0 && win_has_frame(w)) {
return WMODE_FRAME_TRANS;
}
if (win_has_alpha(w)) {
// The WM window has alpha
if (win_client_has_alpha(w)) {
// The client window also has alpha, the entire window is
// transparent
return WMODE_TRANS;
}
if (win_has_frame(w)) {
// The client window doesn't have alpha, but we have a WM frame
// window, which has alpha.
return WMODE_FRAME_TRANS;
}
// Although the WM window has alpha, the frame window has 0 size, so
// consider the window solid
}
// log_trace("Window %#010x(%s) is solid", w->client_win, w->name);
return WMODE_SOLID;
}
/**
* Calculate and return the opacity target of a window.
*
* The priority of opacity settings are:
*
* inactive_opacity_override (if set, and unfocused) > _NET_WM_WINDOW_OPACITY (if set) >
* opacity-rules (if matched) > window type default opacity > active/inactive opacity
*
* @param ps current session
* @param w struct _win object representing the window
* @param ignore_state whether window state should be ignored in opacity calculation
*
* @return target opacity
*/
double win_calc_opacity_target(session_t *ps, const struct managed_win *w, bool ignore_state) {
double opacity = 1;
if (w->state == WSTATE_UNMAPPED && !ignore_state) {
// be consistent
return 0;
}
if ((w->state == WSTATE_UNMAPPING || w->state == WSTATE_DESTROYING) && !ignore_state) {
return 0;
}
// Try obeying opacity property and window type opacity firstly
if (w->has_opacity_prop) {
opacity = ((double)w->opacity_prop) / OPAQUE;
} else if (w->opacity_is_set) {
opacity = w->opacity_set;
} else if (!safe_isnan(ps->o.wintype_option[w->window_type].opacity)) {
opacity = ps->o.wintype_option[w->window_type].opacity;
} 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 (!w->focused)
// Respect inactive_opacity in some cases
opacity = ps->o.inactive_opacity;
}
// respect inactive override
if (ps->o.inactive_opacity_override && !w->focused) {
opacity = ps->o.inactive_opacity;
}
return opacity;
}
/**
* Determine whether a window is to be dimmed.
*/
bool win_should_dim(session_t *ps, const struct managed_win *w) {
// Make sure we do nothing if the window is unmapped / being destroyed
if (w->state == WSTATE_UNMAPPED) {
return false;
}
if (ps->o.inactive_dim > 0 && !(w->focused)) {
return true;
} else {
return false;
}
}
/**
* Determine if a window should fade on opacity change.
*/
bool win_should_fade(session_t *ps, const struct managed_win *w) {
// To prevent it from being overwritten by last-paint value if the window is
if (w->fade_force != UNSET) {
return w->fade_force;
}
if (ps->o.no_fading_openclose && w->in_openclose) {
return false;
}
if (ps->o.no_fading_destroyed_argb && w->state == WSTATE_DESTROYING &&
win_has_alpha(w) && w->client_win && w->client_win != w->base.id) {
// deprecated
return false;
}
// Ignore other possible causes of fading state changes after window
// gets unmapped
// if (w->a.map_state != XCB_MAP_STATE_VIEWABLE) {
//}
if (c2_match(ps, w, ps->o.fade_blacklist, NULL)) {
return false;
}
return 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, struct managed_win *w) {
winprop_t prop = wid_get_prop(ps, w->base.id, ps->atoms->a_COMPTON_SHADOW, 1,
XCB_ATOM_CARDINAL, 32);
if (!prop.nitems) {
w->prop_shadow = -1;
} else {
w->prop_shadow = *prop.c32;
}
free_winprop(&prop);
}
static void win_set_shadow(session_t *ps, struct managed_win *w, bool shadow_new) {
if (w->shadow == shadow_new) {
return;
}
log_debug("Updating shadow property of window %#010x (%s) to %d", w->base.id,
w->name, shadow_new);
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);
if (ps->backend_data && w->state != WSTATE_UNMAPPED &&
!(w->flags & WIN_FLAGS_IMAGE_ERROR)) {
assert(!w->shadow_image);
// Create shadow image
w->shadow_image = ps->backend_data->ops->render_shadow(
ps->backend_data, w->widthb, w->heightb, ps->gaussian_map,
ps->o.shadow_red, ps->o.shadow_green, ps->o.shadow_blue,
ps->o.shadow_opacity);
if (!w->shadow_image) {
log_error("Failed to bind shadow image");
w->shadow_force = OFF;
}
}
}
pixman_region32_fini(&extents);
}
/**
* Determine if a window should have shadow, and update things depending
* on shadow state.
*/
static void win_determine_shadow(session_t *ps, struct managed_win *w) {
log_debug("Determining shadow of window %#010x (%s)", w->base.id, w->name);
bool shadow_new = w->shadow;
if (w->shadow_force != UNSET) {
shadow_new = w->shadow_force;
} else if (w->a.map_state == XCB_MAP_STATE_VIEWABLE) {
shadow_new = true;
if (!ps->o.wintype_option[w->window_type].shadow) {
log_debug("Shadow disabled by wintypes");
shadow_new = false;
} else if (c2_match(ps, w, ps->o.shadow_blacklist, NULL)) {
log_debug("Shadow disabled by shadow-exclude");
shadow_new = false;
} else if (ps->o.shadow_ignore_shaped && w->bounding_shaped &&
!w->rounded_corners) {
log_debug("Shadow disabled by shadow-ignore-shaped");
shadow_new = false;
} else if (ps->o.respect_prop_shadow && w->prop_shadow == 0) {
log_debug("Shadow disabled by shadow property");
shadow_new = false;
}
}
win_set_shadow(ps, w, shadow_new);
}
/**
* Reread _COMPTON_SHADOW property from a window and update related
* things.
*/
void win_update_prop_shadow(session_t *ps, struct managed_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);
}
static void win_set_invert_color(session_t *ps, struct managed_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.
*/
static void win_determine_invert_color(session_t *ps, struct managed_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, NULL);
win_set_invert_color(ps, w, invert_color_new);
}
/**
* Set w->invert_color_force of a window.
*/
void win_set_invert_color_force(session_t *ps, struct managed_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);
}
}
/**
* Set w->fade_force of a window.
*
* Doesn't affect fading already in progress
*/
void win_set_fade_force(struct managed_win *w, switch_t val) {
w->fade_force = val;
}
/**
* Set w->focused_force of a window.
*/
void win_set_focused_force(session_t *ps, struct managed_win *w, switch_t val) {
if (val != w->focused_force) {
w->focused_force = val;
win_update_focused(ps, w);
queue_redraw(ps);
}
}
/**
* Set w->shadow_force of a window.
*/
void win_set_shadow_force(session_t *ps, struct managed_win *w, switch_t val) {
if (val != w->shadow_force) {
w->shadow_force = val;
win_determine_shadow(ps, w);
queue_redraw(ps);
}
}
static void
win_set_blur_background(session_t *ps, struct managed_win *w, bool blur_background_new) {
if (w->blur_background == blur_background_new)
return;
w->blur_background = blur_background_new;
// This damage might not be absolutely necessary (e.g. when the window is opaque),
// but blur_background changes should be rare, so this should be fine.
add_damage_from_win(ps, w);
}
/**
* Determine if a window should have background blurred.
*/
static void win_determine_blur_background(session_t *ps, struct managed_win *w) {
if (w->a.map_state != XCB_MAP_STATE_VIEWABLE)
return;
bool blur_background_new =
ps->o.blur_method && !c2_match(ps, w, ps->o.blur_background_blacklist, 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, struct managed_win *w) {
if (w->a.map_state != XCB_MAP_STATE_VIEWABLE) {
return;
}
double opacity = 1.0;
bool is_set = false;
void *val = NULL;
if (c2_match(ps, w, ps->o.opacity_rules, &val)) {
opacity = ((double)(long)val) / 100.0;
is_set = true;
}
w->opacity_set = opacity;
w->opacity_is_set = is_set;
}
/**
* Function to be called on window type changes.
*/
static void win_on_wtype_change(session_t *ps, struct managed_win *w) {
win_determine_shadow(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.
*
* TODO need better name
*/
void win_on_factor_change(session_t *ps, struct managed_win *w) {
if (ps->o.shadow_blacklist)
win_determine_shadow(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, 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, NULL);
w->reg_ignore_valid = false;
}
/**
* Update cache data in struct _win that depends on window size.
*/
void win_on_win_size_change(session_t *ps, struct managed_win *w) {
w->widthb = w->g.width + w->g.border_width * 2;
w->heightb = w->g.height + w->g.border_width * 2;
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;
// Invalidate the shadow we built
if (w->state == WSTATE_MAPPED || w->state == WSTATE_MAPPING ||
w->state == WSTATE_FADING) {
w->flags |= WIN_FLAGS_IMAGE_STALE;
ps->pending_updates = true;
} else {
assert(w->state == WSTATE_UNMAPPED);
}
free_paint(ps, &w->shadow_paint);
}
/**
* Update window type.
*/
void win_update_wintype(session_t *ps, struct managed_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->atoms->aWM_TRANSIENT_FOR))
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, struct managed_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_update_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);
auto r = xcb_get_window_attributes_reply(
ps->c, xcb_get_window_attributes(ps->c, w->client_win), NULL);
if (!r) {
log_error("Failed to get client window attributes");
return;
}
w->client_pictfmt = x_get_pictform_for_visual(ps->c, r->visual);
free(r);
}
/**
* 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, struct managed_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
*/
static void win_recheck_client(session_t *ps, struct managed_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->base.id);
if (cw) {
log_trace("(%#010x): client %#010x", w->base.id, cw);
}
// Set a window's client window to itself if we couldn't find a
// client window
if (!cw) {
cw = w->base.id;
w->wmwin = !w->a.override_redirect;
log_trace("(%#010x): client self (%s)", w->base.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);
}
/**
* Free all resources in a <code>struct _win</code>.
*/
void free_win_res(session_t *ps, struct managed_win *w) {
// No need to call backend release_image here because
// finish_unmap_win should've done that for us.
// XXX unless we are called by session_destroy
// assert(w->win_data == NULL);
free_win_res_glx(ps, w);
free_paint(ps, &w->paint);
free_paint(ps, &w->shadow_paint);
// Above should be done during unmapping
// Except when we are called by session_destroy
pixman_region32_fini(&w->bounding_shape);
// BadDamage may be thrown if the window is destroyed
set_ignore_cookie(ps, xcb_damage_destroy(ps->c, w->damage));
rc_region_unref(&w->reg_ignore);
free(w->name);
free(w->class_instance);
free(w->class_general);
free(w->role);
}
/// Insert a new window after list_node `prev`
/// New window will be in unmapped state
static struct win *add_win(session_t *ps, xcb_window_t id, struct list_node *prev) {
log_debug("Adding window %#010x", id);
struct win *old_w = NULL;
HASH_FIND_INT(ps->windows, &id, old_w);
assert(old_w == NULL);
auto new_w = cmalloc(struct win);
list_insert_after(prev, &new_w->stack_neighbour);
new_w->id = id;
new_w->managed = false;
new_w->is_new = true;
new_w->destroyed = false;
HASH_ADD_INT(ps->windows, id, new_w);
ps->pending_updates = true;
return new_w;
}
/// Insert a new win entry at the top of the stack
struct win *add_win_top(session_t *ps, xcb_window_t id) {
return add_win(ps, id, &ps->window_stack);
}
/// Insert a new window above window with id `below`, if there is no window, add to top
/// New window will be in unmapped state
struct win *add_win_above(session_t *ps, xcb_window_t id, xcb_window_t below) {
struct win *w = NULL;
HASH_FIND_INT(ps->windows, &below, w);
if (!w) {
if (!list_is_empty(&ps->window_stack)) {
// `below` window is not found even if the window stack is not
// empty
return NULL;
}
return add_win_top(ps, id);
} else {
// we found something from the hash table, so if the stack is empty,
// we are in an inconsistent state.
assert(!list_is_empty(&ps->window_stack));
return add_win(ps, id, w->stack_neighbour.prev);
}
}
/// Query the Xorg for information about window `win`
/// `win` pointer might become invalid after this function returns
/// Returns the pointer to the window, might be different from `w`
struct win *fill_win(session_t *ps, struct win *w) {
static const struct managed_win win_def = {
// No need to initialize. (or, you can think that
// they are initialized right here).
// The following ones are updated during paint or paint preprocess
.shadow_opacity = 0.0,
.to_paint = false,
.frame_opacity = 1.0,
.dim = false,
.invert_color = false,
.blur_background = false,
.reg_ignore = NULL,
// The following ones are updated for other reasons
.pixmap_damaged = false, // updated by damage events
.state = WSTATE_UNMAPPED, // updated by window state changes
.in_openclose = true, // set to false after first map is done,
// true here because window is just created
.reg_ignore_valid = false, // set to true when damaged
.flags = 0, // updated by property/attributes/etc change
// Runtime variables, updated by dbus
.fade_force = UNSET,
.shadow_force = UNSET,
.focused_force = UNSET,
.invert_color_force = UNSET,
// Initialized in this function
.a = {0},
.pictfmt = NULL,
.client_pictfmt = NULL,
.widthb = 0,
.heightb = 0,
.shadow_dx = 0,
.shadow_dy = 0,
.shadow_width = 0,
.shadow_height = 0,
.damage = XCB_NONE,
// Not initialized until mapped, this variables
// have no meaning or have no use until the window
// is mapped
.win_image = NULL,
.shadow_image = NULL,
.prev_trans = NULL,
.shadow = false,
.xinerama_scr = -1,
.mode = WMODE_TRANS,
.ever_damaged = false,
.client_win = XCB_NONE,
.leader = XCB_NONE,
.cache_leader = XCB_NONE,
.window_type = WINTYPE_UNKNOWN,
.wmwin = false,
.focused = false,
.opacity = 0,
.opacity_target = 0,
.has_opacity_prop = false,
.opacity_prop = OPAQUE,
.opacity_is_set = false,
.opacity_set = 1,
.frame_extents = MARGIN_INIT, // in win_mark_client
.bounding_shaped = false,
.bounding_shape = {0},
.rounded_corners = false,
.paint_excluded = false,
.unredir_if_possible_excluded = false,
.prop_shadow = -1,
// following 4 are set in win_mark_client
.name = NULL,
.class_instance = NULL,
.class_general = NULL,
.role = NULL,
// Initialized during paint
.paint = PAINT_INIT,
.shadow_paint = PAINT_INIT,
};
assert(!w->destroyed);
assert(w->is_new);
w->is_new = false;
// Reject overlay window and already added windows
if (w->id == ps->overlay) {
return w;
}
auto duplicated_win = find_managed_win(ps, w->id);
if (duplicated_win) {
log_debug("Window %#010x (recorded name: %s) added multiple times", w->id,
duplicated_win->name);
return &duplicated_win->base;
}
log_debug("Managing window %#010x", w->id);
xcb_get_window_attributes_cookie_t acookie = xcb_get_window_attributes(ps->c, w->id);
xcb_get_window_attributes_reply_t *a =
xcb_get_window_attributes_reply(ps->c, acookie, NULL);
if (!a || a->map_state == XCB_MAP_STATE_UNVIEWABLE) {
// Failed to get window attributes or geometry probably means
// the window is gone already. Unviewable means the window is
// already reparented elsewhere.
// BTW, we don't care about Input Only windows, except for stacking
// proposes, so we need to keep track of them still.
free(a);
return w;
}
if (a->_class == XCB_WINDOW_CLASS_INPUT_ONLY) {
// No need to manage this window, but we still keep it on the window stack
w->managed = false;
return w;
}
// Allocate and initialize the new win structure
auto new = cmalloc(struct managed_win);
// Fill structure
// We only need to initialize the part that are not initialized
// by map_win
*new = win_def;
new->base = *w;
new->base.managed = true;
new->a = *a;
pixman_region32_init(&new->bounding_shape);
free(a);
// Create Damage for window (if not Input Only)
new->damage = x_new_id(ps->c);
xcb_generic_error_t *e = xcb_request_check(
ps->c, xcb_damage_create_checked(ps->c, new->damage, w->id,
XCB_DAMAGE_REPORT_LEVEL_NON_EMPTY));
if (e) {
free(e);
free(new);
return w;
}
new->pictfmt = x_get_pictform_for_visual(ps->c, new->a.visual);
new->client_pictfmt = NULL;
list_replace(&w->stack_neighbour, &new->base.stack_neighbour);
struct win *replaced = NULL;
HASH_REPLACE_INT(ps->windows, id, &new->base, replaced);
assert(replaced == w);
free(w);
#ifdef CONFIG_DBUS
// Send D-Bus signal
if (ps->o.dbus) {
cdbus_ev_win_added(ps, &new->base);
}
#endif
return &new->base;
}
/**
* Set leader of a window.
*/
static inline void win_set_leader(session_t *ps, struct managed_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, struct managed_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->atoms->aWM_TRANSIENT_FOR);
if (ps->o.detect_client_leader && !leader)
leader = wid_get_prop_window(ps, w->client_win, ps->atoms->aWM_CLIENT_LEADER);
win_set_leader(ps, w, leader);
log_trace("(%#010x): client %#010x, leader %#010x, cache %#010x", w->base.id,
w->client_win, w->leader, win_get_leader(ps, w));
}
/**
* Internal function of win_get_leader().
*/
static xcb_window_t win_get_leader_raw(session_t *ps, struct managed_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) {
auto 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, struct managed_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->atoms->aWM_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->base.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, struct managed_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->base);
else
cdbus_ev_win_focusout(ps, &w->base);
}
#endif
}
/**
* Set real focused state of a window.
*/
void win_set_focused(session_t *ps, struct managed_win *w) {
// Unmapped windows will have their focused state reset on map
if (w->a.map_state != XCB_MAP_STATE_VIEWABLE) {
return;
}
if (win_is_focused_real(ps, w)) {
return;
}
auto old_active_win = ps->active_win;
ps->active_win = w;
assert(win_is_focused_real(ps, w));
if (old_active_win) {
win_on_focus_change(ps, old_active_win);
}
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(const struct managed_win *w, region_t *res) {
pixman_region32_clear(res);
pixman_region32_union_rect(res, res, w->g.x, w->g.y, (uint)w->widthb, (uint)w->heightb);
if (w->shadow) {
assert(w->shadow_width >= 0 && w->shadow_height >= 0);
pixman_region32_union_rect(res, res, w->g.x + w->shadow_dx,
w->g.y + w->shadow_dy, (uint)w->shadow_width,
(uint)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, struct managed_win *w) {
if (ps->shape_exists)
w->bounding_shaped = win_bounding_shaped(ps, w->base.id);
pixman_region32_clear(&w->bounding_shape);
// Start with the window rectangular region
win_get_region_local(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->base.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
// (for the bounding shape, althought xcb_get_geometry thinks
// the outer top left (outer means outside of the window
// border) 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) {
w->rounded_corners = win_has_rounded_corners(w);
}
// Window shape changed, we should free old wpaint and shadow pict
// log_trace("free out dated pict");
if (w->state != WSTATE_UNMAPPED) {
// Note we only do this when screen is redirected, because
// otherwise win_data is not valid
assert(w->state != WSTATE_UNMAPPING && w->state != WSTATE_DESTROYING);
w->flags |= WIN_FLAGS_IMAGE_STALE;
ps->pending_updates = true;
}
free_paint(ps, &w->paint);
free_paint(ps, &w->shadow_paint);
win_on_factor_change(ps, w);
}
/**
* Reread opacity property of a window.
*/
void win_update_opacity_prop(session_t *ps, struct managed_win *w) {
// get frame opacity first
w->has_opacity_prop = wid_get_opacity_prop(ps, w->base.id, OPAQUE, &w->opacity_prop);
if (w->has_opacity_prop)
// opacity found
return;
if (ps->o.detect_client_opacity && w->client_win && w->base.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, struct managed_win *w, xcb_window_t client) {
winprop_t prop = wid_get_prop(ps, client, ps->atoms->a_NET_FRAME_EXTENTS, 4L,
XCB_ATOM_CARDINAL, 32);
if (prop.nitems == 4) {
const int32_t extents[4] = {
to_int_checked(prop.c32[0]),
to_int_checked(prop.c32[1]),
to_int_checked(prop.c32[2]),
to_int_checked(prop.c32[3]),
};
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->base.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, const struct managed_win *w) {
win_stack_foreach_managed(i, &ps->window_stack) {
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, const struct win *w) {
xcb_change_window_attributes(ps->c, w->id, XCB_CW_EVENT_MASK, (const uint32_t[]){0});
if (!w->managed) {
return;
}
auto mw = (struct managed_win *)w;
if (mw->client_win) {
xcb_change_window_attributes(ps->c, mw->client_win, XCB_CW_EVENT_MASK,
(const uint32_t[]){0});
}
if (ps->shape_exists) {
xcb_shape_select_input(ps->c, w->id, 0);
}
}
static void finish_unmap_win(session_t *ps, struct managed_win **_w) {
auto w = *_w;
w->ever_damaged = false;
w->reg_ignore_valid = false;
w->state = WSTATE_UNMAPPED;
// We are in unmap_win, this window definitely was viewable
if (ps->backend_data) {
win_release_image(ps->backend_data, w);
}
free_paint(ps, &w->paint);
free_paint(ps, &w->shadow_paint);
w->flags = 0;
}
static void finish_destroy_win(session_t *ps, struct managed_win **_w) {
auto w = *_w;
if (w->state != WSTATE_UNMAPPED) {
// Only UNMAPPED state has window resources freed, otherwise
// we need to call finish_unmap_win to free them.
finish_unmap_win(ps, _w);
}
// Invalidate reg_ignore of windows below this one
// TODO what if w->next is not mapped??
// TODO seriously figure out how reg_ignore behaves.
// I think if `w` is unmapped, and destroyed after
// paint happened at least once, w->reg_ignore_valid would
// be true, and there is no need to invalid w->next->reg_ignore
// when w is destroyed.
auto next_w = win_stack_find_next_managed(ps, &w->base.stack_neighbour);
if (next_w) {
rc_region_unref(&next_w->reg_ignore);
next_w->reg_ignore_valid = false;
}
log_trace("Trying to destroy (%#010x)", w->base.id);
list_remove(&w->base.stack_neighbour);
if (w == ps->active_win) {
// Usually, the window cannot be the focused at destruction. FocusOut
// should be generated before the window is destroyed.
// We do this check just to be completely sure we don't have dangling
// references.
log_debug("window %#010x (%s) is destroyed while being focused",
w->base.id, w->name);
ps->active_win = NULL;
}
free_win_res(ps, w);
// Drop w from all prev_trans to avoid accessing freed memory in
// repair_win()
// TODO there can only be one prev_trans pointing to w
win_stack_foreach_managed(w2, &ps->window_stack) {
if (w == w2->prev_trans) {
w2->prev_trans = NULL;
}
}
free(w);
*_w = NULL;
return;
log_warn("Destroyed window is not in window list");
assert(false);
}
static void finish_map_win(struct managed_win **_w) {
auto w = *_w;
w->in_openclose = false;
w->state = WSTATE_MAPPED;
}
void destroy_unmanaged_win(session_t *ps, struct win **_w) {
auto w = *_w;
assert(!w->managed);
assert(!w->destroyed);
list_remove(&w->stack_neighbour);
HASH_DEL(ps->windows, w);
free(w);
*_w = NULL;
}
/// Move window `w` so it's before `next` in the list
static inline void restack_win(session_t *ps, struct win *w, struct list_node *next) {
struct managed_win *mw = NULL;
if (w->managed) {
mw = (struct managed_win *)w;
}
if (mw) {
// This invalidates all reg_ignore below the new stack position of `w`
mw->reg_ignore_valid = false;
rc_region_unref(&mw->reg_ignore);
// This invalidates all reg_ignore below the old stack position of `w`
auto next_w = win_stack_find_next_managed(ps, &w->stack_neighbour);
if (next_w) {
next_w->reg_ignore_valid = false;
rc_region_unref(&next_w->reg_ignore);
}
}
list_move_before(&w->stack_neighbour, next);
// add damage for this window
if (mw) {
add_damage_from_win(ps, mw);
}
#ifdef DEBUG_RESTACK
log_trace("Window stack modified. Current stack:");
for (auto c = ps->list; c; c = c->next) {
const char *desc = "";
if (c->state == WSTATE_DESTROYING) {
desc = "(D) ";
}
log_trace("%#010x \"%s\" %s", c->id, c->name, desc);
}
#endif
}
/// Move window `w` so it's right above `below`
void restack_above(session_t *ps, struct win *w, xcb_window_t below) {
xcb_window_t old_below;
if (!list_node_is_last(&ps->window_stack, &w->stack_neighbour)) {
old_below = list_next_entry(w, stack_neighbour)->id;
} else {
old_below = XCB_NONE;
}
log_debug("Restack %#010x (%s), old_below: %#010x, new_below: %#010x", w->id,
win_get_name_if_managed(w), old_below, below);
if (old_below != below) {
struct list_node *new_next;
if (!below) {
new_next = &ps->window_stack;
} else {
struct win *tmp_w = NULL;
HASH_FIND_INT(ps->windows, &below, tmp_w);
if (!tmp_w) {
log_error("Failed to found new below window %#010x.", below);
return;
}
new_next = &tmp_w->stack_neighbour;
}
restack_win(ps, w, new_next);
}
}
void restack_bottom(session_t *ps, struct win *w) {
restack_above(ps, w, 0);
}
void restack_top(session_t *ps, struct win *w) {
log_debug("Restack %#010x (%s) to top", w->id, win_get_name_if_managed(w));
if (&w->stack_neighbour == ps->window_stack.next) {
// already at top
return;
}
restack_win(ps, w, ps->window_stack.next);
}
void unmap_win(session_t *ps, struct managed_win **_w, bool destroy) {
auto w = *_w;
winstate_t target_state = destroy ? WSTATE_DESTROYING : WSTATE_UNMAPPING;
if (unlikely(!w)) {
return;
}
if (!destroy && w->a._class == XCB_WINDOW_CLASS_INPUT_ONLY) {
// We don't care about mapping / unmapping of Input Only windows.
// But we need to remember to destroy them, so future window with
// the same id won't be handled incorrectly.
// Issue #119 was caused by this.
return;
}
log_trace("Unmapping %#010x \"%s\", destroy = %d", w->base.id,
(w ? w->name : NULL), destroy);
if (unlikely(w->state == WSTATE_DESTROYING && !destroy)) {
log_warn("Trying to undestroy a window?");
assert(false);
}
// If the window is already in the state we want
if (unlikely(w->state == target_state)) {
log_warn("%s a window twice", destroy ? "Destroying" : "Unmapping");
return;
}
if (destroy) {
// Delete destroyed window from the hash table, so future window with the
// same window id won't confuse us.
// Keep the window in the window stack, since we might still need to
// render it (fading out). Window will be removed from the stack when
// fading finishes.
HASH_DEL(ps->windows, &w->base);
}
if (unlikely(w->state == WSTATE_UNMAPPED) || w->a._class == XCB_WINDOW_CLASS_INPUT_ONLY) {
if (unlikely(!destroy)) {
log_warn("Unmapping an already unmapped window %#010x %s twice",
w->base.id, w->name);
return;
}
// Window is already unmapped, or is an Input Only window, just destroy it
finish_destroy_win(ps, _w);
return;
}
// Note we don't update focused window here. This will either be
// triggered by subsequence Focus{In, Out} event, or by recheck_focus
w->a.map_state = XCB_MAP_STATE_UNMAPPED;
w->state = target_state;
w->opacity_target = win_calc_opacity_target(ps, w, false);
w->in_openclose = destroy;
// don't care about properties anymore
if (!destroy) {
win_ev_stop(ps, &w->base);
}
#ifdef CONFIG_DBUS
// Send D-Bus signal
if (ps->o.dbus) {
if (destroy) {
cdbus_ev_win_destroyed(ps, &w->base);
} else {
cdbus_ev_win_unmapped(ps, &w->base);
}
}
#endif
if (!ps->redirected) {
win_skip_fading(ps, _w);
}
}
/**
* Execute fade callback of a window if fading finished.
*/
void win_check_fade_finished(session_t *ps, struct managed_win **_w) {
auto w = *_w;
if (w->state == WSTATE_MAPPED || w->state == WSTATE_UNMAPPED) {
// No fading in progress
assert(w->opacity_target == w->opacity);
return;
}
if (w->opacity == w->opacity_target) {
switch (w->state) {
case WSTATE_UNMAPPING: return finish_unmap_win(ps, _w);
case WSTATE_DESTROYING: return finish_destroy_win(ps, _w);
case WSTATE_MAPPING: return finish_map_win(_w);
case WSTATE_FADING: w->state = WSTATE_MAPPED; break;
default: unreachable;
}
}
}
/// Skip the current in progress fading of window,
/// transition the window straight to its end state
void win_skip_fading(session_t *ps, struct managed_win **_w) {
auto w = *_w;
if (w->state == WSTATE_MAPPED || w->state == WSTATE_UNMAPPED) {
assert(w->opacity_target == w->opacity);
return;
}
log_trace("Skipping fading process of window %#010x (%s)", w->base.id, w->name);
w->opacity = w->opacity_target;
win_check_fade_finished(ps, _w);
}
/**
* Get the Xinerama screen a window is on.
*
* Return an index >= 0, or -1 if not found.
*
* TODO move to x.c
* TODO use xrandr
*/
void win_update_screen(session_t *ps, struct managed_win *w) {
w->xinerama_scr = -1;
for (int i = 0; i < ps->xinerama_nscrs; i++) {
auto e = pixman_region32_extents(&ps->xinerama_scr_regs[i]);
if (e->x1 <= w->g.x && e->y1 <= w->g.y && e->x2 >= w->g.x + w->widthb &&
e->y2 >= w->g.y + w->heightb) {
w->xinerama_scr = i;
return;
}
}
}
/// Map an already registered window
void map_win(session_t *ps, struct managed_win *w) {
assert(w);
// Don't care about window mapping if it's an InputOnly window
// Also, try avoiding mapping a window twice
if (w->a._class == XCB_WINDOW_CLASS_INPUT_ONLY) {
return;
}
log_debug("Mapping (%#010x \"%s\")", w->base.id, w->name);
assert(w->state != WSTATE_DESTROYING);
if (w->state != WSTATE_UNMAPPED && w->state != WSTATE_UNMAPPING) {
log_warn("Mapping an already mapped window");
return;
}
if (w->state == WSTATE_UNMAPPING) {
win_skip_fading(ps, &w);
// We skipped the unmapping process, the window was rendered, now it is
// not anymore. So we need to mark then unmapping window as damaged.
add_damage_from_win(ps, w);
assert(w);
}
// We stopped processing window size change when we were unmapped, refresh the
// size of the window
xcb_get_geometry_cookie_t gcookie = xcb_get_geometry(ps->c, w->base.id);
xcb_get_geometry_reply_t *g = xcb_get_geometry_reply(ps->c, gcookie, NULL);
if (!g) {
log_error("Failed to get the geometry of window %#010x", w->base.id);
return;
}
w->g = *g;
free(g);
win_on_win_size_change(ps, w);
log_trace("Window size: %dx%d", w->g.width, w->g.height);
// Rant: window size could change after we queried its geometry here and before
// we get its pixmap. Later, when we get back to the event processing loop, we
// will get the notification about size change from Xserver and try to refresh the
// pixmap, while the pixmap is actually already up-to-date (i.e. the notification
// is stale). There is basically no real way to prevent this, aside from grabbing
// the server.
// XXX Can we assume map_state is always viewable?
w->a.map_state = XCB_MAP_STATE_VIEWABLE;
win_update_screen(ps, w);
// Set window event mask before reading properties so that no property
// changes are lost
xcb_change_window_attributes(
ps->c, w->base.id, XCB_CW_EVENT_MASK,
(const uint32_t[]){determine_evmask(ps, w->base.id, WIN_EVMODE_FRAME)});
// Notify compton when the shape of a window changes
if (ps->shape_exists) {
xcb_shape_select_input(ps->c, w->base.id, 1);
}
// Update window mode here to check for ARGB windows
w->mode = win_calc_mode(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);
log_debug("Window (%#010x) has type %s", w->base.id, WINTYPES[w->window_type]);
// Update window focus state
win_update_focused(ps, w);
// Update opacity and dim state
win_update_opacity_prop(ps, w);
// 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);
// XXX We need to make sure that win_data is available
// iff `state` is MAPPED
w->state = WSTATE_MAPPING;
w->opacity_target = win_calc_opacity_target(ps, w, false);
log_debug("Window %#010x has opacity %f, opacity target is %f", w->base.id,
w->opacity, w->opacity_target);
win_determine_blur_background(ps, w);
w->ever_damaged = false;
// We stopped listening on ShapeNotify events
// when the window is unmapped (XXX we shouldn't),
// so the shape of the window might have changed,
// update. (Issue #35)
win_update_bounding_shape(ps, w);
// Reset the STALE_IMAGE flag set by win_update_bounding_shape. Because we are
// just about to bind the image, no way that's stale.
//
// Also because NVIDIA driver doesn't like seeing the same pixmap under different
// ids, so avoid naming the pixmap again when it didn't actually change.
w->flags &= ~WIN_FLAGS_IMAGE_STALE;
// Bind image after update_bounding_shape, so the shadow has the correct size.
if (ps->backend_data) {
if (!win_bind_image(ps, w)) {
w->flags |= WIN_FLAGS_IMAGE_ERROR;
}
}
#ifdef CONFIG_DBUS
// Send D-Bus signal
if (ps->o.dbus) {
cdbus_ev_win_mapped(ps, &w->base);
}
#endif
if (!ps->redirected) {
win_skip_fading(ps, &w);
assert(w);
}
}
void map_win_by_id(session_t *ps, xcb_window_t id) {
// Unmap overlay window if it got mapped but we are currently not
// in redirected state.
if (ps->overlay && id == ps->overlay && !ps->redirected) {
log_debug("Overlay is mapped while we are not redirected");
auto e = xcb_request_check(ps->c, xcb_unmap_window(ps->c, ps->overlay));
if (e) {
log_error("Failed to unmap the overlay window");
free(e);
}
// We don't track the overlay window, so we can return
return;
}
auto w = find_managed_win(ps, id);
if (!w) {
return;
}
map_win(ps, w);
}
/**
* Find a managed window from window id in window linked list of the session.
*/
struct win *find_win(session_t *ps, xcb_window_t id) {
if (!id) {
return NULL;
}
struct win *w = NULL;
HASH_FIND_INT(ps->windows, &id, w);
assert(w == NULL || !w->destroyed);
return w;
}
/**
* Find a managed window from window id in window linked list of the session.
*/
struct managed_win *find_managed_win(session_t *ps, xcb_window_t id) {
struct win *w = find_win(ps, id);
if (!w || !w->managed) {
return NULL;
}
auto mw = (struct managed_win *)w;
assert(mw->state != WSTATE_DESTROYING);
return mw;
}
/**
* Find out the WM frame of a client window using existing data.
*
* @param id window ID
* @return struct win object of the found window, NULL if not found
*/
struct managed_win *find_toplevel(session_t *ps, xcb_window_t id) {
if (!id) {
return NULL;
}
HASH_ITER2(ps->windows, w) {
assert(!w->destroyed);
if (!w->managed) {
continue;
}
auto mw = (struct managed_win *)w;
if (mw->client_win == id) {
return mw;
}
}
return NULL;
}
/**
* 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
*/
struct managed_win *find_toplevel2(session_t *ps, xcb_window_t wid) {
// TODO this should probably be an "update tree", then find_toplevel.
// current approach is a bit more "racy"
struct win *w = NULL;
// We traverse through its ancestors to find out the frame
// Using find_win here because if we found a unmanaged window we know about, we
// can stop early.
while (wid && wid != ps->root && !(w = find_win(ps, wid))) {
// xcb_query_tree probably fails if you run compton when X is somehow
// initializing (like add it in .xinitrc). In this case
// just leave it alone.
auto reply = xcb_query_tree_reply(ps->c, xcb_query_tree(ps->c, wid), NULL);
if (reply == NULL) {
break;
}
wid = reply->parent;
free(reply);
}
if (w == NULL || !w->managed) {
return NULL;
}
return (struct managed_win *)w;
}
/**
* Check if a rectangle includes the whole screen.
*/
static inline bool rect_is_fullscreen(const session_t *ps, int x, int y, int wid, int hei) {
return (x <= 0 && y <= 0 && (x + wid) >= ps->root_width && (y + hei) >= ps->root_height);
}
/**
* Check if a window is fulscreen using EWMH
*/
static inline bool
win_is_fullscreen_xcb(xcb_connection_t *c, const struct atom *a, const xcb_window_t w) {
xcb_get_property_cookie_t prop =
xcb_get_property(c, 0, w, a->a_NET_WM_STATE, XCB_ATOM_ATOM, 0, 12);
xcb_get_property_reply_t *reply = xcb_get_property_reply(c, prop, NULL);
if (!reply)
return false;
if (reply->length) {
xcb_atom_t *val = xcb_get_property_value(reply);
for (uint32_t i = 0; i < reply->length; i++) {
if (val[i] != a->a_NET_WM_STATE_FULLSCREEN)
continue;
free(reply);
return true;
}
}
free(reply);
return false;
}
/**
* Check if a window is a fullscreen window.
*
* It's not using w->border_size for performance measures.
*/
bool win_is_fullscreen(const session_t *ps, const struct managed_win *w) {
if (!ps->o.no_ewmh_fullscreen && win_is_fullscreen_xcb(ps->c, ps->atoms, w->client_win))
return true;
return rect_is_fullscreen(ps, w->g.x, w->g.y, w->widthb, w->heightb) &&
(!w->bounding_shaped || w->rounded_corners);
}
/**
* Check if a window is really focused.
*/
bool win_is_focused_real(const session_t *ps, const struct managed_win *w) {
return w->a.map_state == XCB_MAP_STATE_VIEWABLE && ps->active_win == w;
}
// Find the managed window immediately below `i` in the window stack
struct managed_win *
win_stack_find_next_managed(const session_t *ps, const struct list_node *i) {
while (!list_node_is_last(&ps->window_stack, i)) {
auto next = list_entry(i->next, struct win, stack_neighbour);
if (next->managed) {
return (struct managed_win *)next;
}
i = &next->stack_neighbour;
}
return NULL;
}
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