gri3-wm/src/x.c

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/*
* vim:ts=4:sw=4:expandtab
*
* i3 - an improved dynamic tiling window manager
* © 2009-2011 Michael Stapelberg and contributors (see also: LICENSE)
*
* x.c: Interface to X11, transfers our in-memory state to X11 (see also
* render.c). Basically a big state machine.
*
*/
#include "all.h"
/* Stores the X11 window ID of the currently focused window */
xcb_window_t focused_id = XCB_NONE;
/* The bottom-to-top window stack of all windows which are managed by i3.
* Used for x_get_window_stack(). */
static xcb_window_t *btt_stack;
static int btt_stack_num;
/* Stores coordinates to warp mouse pointer to if set */
static Rect *warp_to;
/*
* Describes the X11 state we may modify (map state, position, window stack).
* There is one entry per container. The state represents the current situation
* as X11 sees it (with the exception of the order in the state_head CIRCLEQ,
* which represents the order that will be pushed to X11, while old_state_head
* represents the current order). It will be updated in x_push_changes().
*
*/
typedef struct con_state {
xcb_window_t id;
bool mapped;
bool unmap_now;
bool child_mapped;
/** The con for which this state is. */
Con *con;
/* For reparenting, we have a flag (need_reparent) and the X ID of the old
* frame this window was in. The latter is necessary because we need to
* ignore UnmapNotify events (by changing the window event mask). */
bool need_reparent;
xcb_window_t old_frame;
Rect rect;
Rect window_rect;
bool initial;
char *name;
CIRCLEQ_ENTRY(con_state) state;
CIRCLEQ_ENTRY(con_state) old_state;
} con_state;
CIRCLEQ_HEAD(state_head, con_state) state_head =
CIRCLEQ_HEAD_INITIALIZER(state_head);
CIRCLEQ_HEAD(old_state_head, con_state) old_state_head =
CIRCLEQ_HEAD_INITIALIZER(old_state_head);
/*
* Returns the container state for the given frame. This function always
* returns a container state (otherwise, there is a bug in the code and the
* container state of a container for which x_con_init() was not called was
* requested).
*
*/
static con_state *state_for_frame(xcb_window_t window) {
con_state *state;
CIRCLEQ_FOREACH(state, &state_head, state)
if (state->id == window)
return state;
/* TODO: better error handling? */
ELOG("No state found\n");
assert(false);
return NULL;
}
/*
* Initializes the X11 part for the given container. Called exactly once for
* every container from con_new().
*
*/
void x_con_init(Con *con) {
/* TODO: maybe create the window when rendering first? we could then even
* get the initial geometry right */
uint32_t mask = 0;
uint32_t values[2];
/* our own frames should not be managed */
mask |= XCB_CW_OVERRIDE_REDIRECT;
values[0] = 1;
/* see include/xcb.h for the FRAME_EVENT_MASK */
mask |= XCB_CW_EVENT_MASK;
values[1] = FRAME_EVENT_MASK & ~XCB_EVENT_MASK_ENTER_WINDOW;
Rect dims = { -15, -15, 10, 10 };
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con->frame = create_window(conn, dims, XCB_WINDOW_CLASS_INPUT_OUTPUT, XCURSOR_CURSOR_POINTER, false, mask, values);
struct con_state *state = scalloc(sizeof(struct con_state));
state->id = con->frame;
state->mapped = false;
state->initial = true;
CIRCLEQ_INSERT_HEAD(&state_head, state, state);
CIRCLEQ_INSERT_HEAD(&old_state_head, state, old_state);
DLOG("adding new state for window id 0x%08x\n", state->id);
}
/*
* Re-initializes the associated X window state for this container. You have
* to call this when you assign a client to an empty container to ensure that
* its state gets updated correctly.
*
*/
void x_reinit(Con *con) {
struct con_state *state;
if ((state = state_for_frame(con->frame)) == NULL) {
ELOG("window state not found\n");
return;
}
DLOG("resetting state %p to initial\n", state);
state->initial = true;
state->child_mapped = false;
state->con = con;
memset(&(state->window_rect), 0, sizeof(Rect));
}
/*
* Reparents the child window of the given container (necessary for sticky
* containers). The reparenting happens in the next call of x_push_changes().
*
*/
void x_reparent_child(Con *con, Con *old) {
struct con_state *state;
if ((state = state_for_frame(con->frame)) == NULL) {
ELOG("window state for con not found\n");
return;
}
state->need_reparent = true;
state->old_frame = old->frame;
}
/*
* Moves a child window from Container src to Container dest.
*
*/
void x_move_win(Con *src, Con *dest) {
struct con_state *state_src, *state_dest;
if ((state_src = state_for_frame(src->frame)) == NULL) {
ELOG("window state for src not found\n");
return;
}
if ((state_dest = state_for_frame(dest->frame)) == NULL) {
ELOG("window state for dest not found\n");
return;
}
state_dest->con = state_src->con;
state_src->con = NULL;
Rect zero = { 0, 0, 0, 0 };
if (memcmp(&(state_dest->window_rect), &(zero), sizeof(Rect)) == 0) {
memcpy(&(state_dest->window_rect), &(state_src->window_rect), sizeof(Rect));
DLOG("COPYING RECT\n");
}
}
/*
* Kills the window decoration associated with the given container.
*
*/
void x_con_kill(Con *con) {
con_state *state;
xcb_destroy_window(conn, con->frame);
xcb_free_pixmap(conn, con->pixmap);
xcb_free_gc(conn, con->pm_gc);
state = state_for_frame(con->frame);
CIRCLEQ_REMOVE(&state_head, state, state);
CIRCLEQ_REMOVE(&old_state_head, state, old_state);
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FREE(state->name);
free(state);
/* Invalidate focused_id to correctly focus new windows with the same ID */
focused_id = XCB_NONE;
}
/*
* Returns true if the client supports the given protocol atom (like WM_DELETE_WINDOW)
*
*/
bool window_supports_protocol(xcb_window_t window, xcb_atom_t atom) {
xcb_get_property_cookie_t cookie;
xcb_icccm_get_wm_protocols_reply_t protocols;
bool result = false;
cookie = xcb_icccm_get_wm_protocols(conn, window, A_WM_PROTOCOLS);
if (xcb_icccm_get_wm_protocols_reply(conn, cookie, &protocols, NULL) != 1)
return false;
/* Check if the clients protocols have the requested atom set */
for (uint32_t i = 0; i < protocols.atoms_len; i++)
if (protocols.atoms[i] == atom)
result = true;
xcb_icccm_get_wm_protocols_reply_wipe(&protocols);
return result;
}
/*
* Kills the given X11 window using WM_DELETE_WINDOW (if supported).
*
*/
void x_window_kill(xcb_window_t window, kill_window_t kill_window) {
/* if this window does not support WM_DELETE_WINDOW, we kill it the hard way */
if (!window_supports_protocol(window, A_WM_DELETE_WINDOW)) {
if (kill_window == KILL_WINDOW) {
LOG("Killing specific window 0x%08x\n", window);
xcb_destroy_window(conn, window);
} else {
LOG("Killing the X11 client which owns window 0x%08x\n", window);
xcb_kill_client(conn, window);
}
return;
}
/* Every X11 event is 32 bytes long. Therefore, XCB will copy 32 bytes.
* In order to properly initialize these bytes, we allocate 32 bytes even
* though we only need less for an xcb_configure_notify_event_t */
void *event = scalloc(32);
xcb_client_message_event_t *ev = event;
ev->response_type = XCB_CLIENT_MESSAGE;
ev->window = window;
ev->type = A_WM_PROTOCOLS;
ev->format = 32;
ev->data.data32[0] = A_WM_DELETE_WINDOW;
ev->data.data32[1] = XCB_CURRENT_TIME;
LOG("Sending WM_DELETE to the client\n");
xcb_send_event(conn, false, window, XCB_EVENT_MASK_NO_EVENT, (char*)ev);
xcb_flush(conn);
free(event);
}
/*
* Draws the decoration of the given container onto its parent.
*
*/
void x_draw_decoration(Con *con) {
Con *parent = con->parent;
bool leaf = con_is_leaf(con);
/* This code needs to run for:
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* leaf containers
* non-leaf containers which are in a stacked/tabbed container
*
* It does not need to run for:
* floating containers (they dont have a decoration)
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*/
if ((!leaf &&
parent->layout != L_STACKED &&
parent->layout != L_TABBED) ||
con->type == CT_FLOATING_CON)
return;
/* Skip containers whose height is 0 (for example empty dockareas) */
if (con->rect.height == 0)
return;
/* Skip containers whose pixmap has not yet been created (can happen when
* decoration rendering happens recursively for a window for which
* x_push_node() was not yet called) */
if (leaf && con->pixmap == XCB_NONE)
return;
/* 1: build deco_params and compare with cache */
struct deco_render_params *p = scalloc(sizeof(struct deco_render_params));
/* find out which colors to use */
if (con->urgent)
p->color = &config.client.urgent;
else if (con == focused || con_inside_focused(con))
p->color = &config.client.focused;
else if (con == TAILQ_FIRST(&(parent->focus_head)))
p->color = &config.client.focused_inactive;
else
p->color = &config.client.unfocused;
p->border_style = con_border_style(con);
Rect *r = &(con->rect);
Rect *w = &(con->window_rect);
p->con_rect = (struct width_height){ r->width, r->height };
p->con_window_rect = (struct width_height){ w->width, w->height };
p->con_deco_rect = con->deco_rect;
p->background = config.client.background;
p->con_is_leaf = con_is_leaf(con);
p->font = config.font.id;
if (con->deco_render_params != NULL &&
(con->window == NULL || !con->window->name_x_changed) &&
!parent->pixmap_recreated &&
!con->pixmap_recreated &&
memcmp(p, con->deco_render_params, sizeof(struct deco_render_params)) == 0) {
free(p);
goto copy_pixmaps;
}
Con *next = con;
while ((next = TAILQ_NEXT(next, nodes))) {
FREE(next->deco_render_params);
}
FREE(con->deco_render_params);
con->deco_render_params = p;
if (con->window != NULL && con->window->name_x_changed)
con->window->name_x_changed = false;
parent->pixmap_recreated = false;
con->pixmap_recreated = false;
/* 2: draw the client.background, but only for the parts around the client_rect */
if (con->window != NULL) {
xcb_rectangle_t background[] = {
/* top area */
{ 0, 0, r->width, w->y },
/* bottom area */
{ 0, (w->y + w->height), r->width, r->height - (w->y + w->height) },
/* left area */
{ 0, 0, w->x, r->height },
/* right area */
{ w->x + w->width, 0, r->width - (w->x + w->width), r->height }
};
#if 0
for (int i = 0; i < 4; i++)
DLOG("rect is (%d, %d) with %d x %d\n",
background[i].x,
background[i].y,
background[i].width,
background[i].height
);
#endif
xcb_change_gc(conn, con->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]) { config.client.background });
xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, sizeof(background) / sizeof(xcb_rectangle_t), background);
}
/* 3: draw a rectangle in border color around the client */
if (p->border_style != BS_NONE && p->con_is_leaf) {
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Rect br = con_border_style_rect(con);
#if 0
DLOG("con->rect spans %d x %d\n", con->rect.width, con->rect.height);
DLOG("border_rect spans (%d, %d) with %d x %d\n", br.x, br.y, br.width, br.height);
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DLOG("window_rect spans (%d, %d) with %d x %d\n", con->window_rect.x, con->window_rect.y, con->window_rect.width, con->window_rect.height);
#endif
/* These rectangles represents the border around the child window
* (left, bottom and right part). We dont just fill the whole
* rectangle because some childs are not freely resizable and we want
* their background color to "shine through". */
xcb_change_gc(conn, con->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->background });
xcb_rectangle_t borders[] = {
{ 0, 0, br.x, r->height },
{ 0, r->height + br.height + br.y, r->width, r->height },
{ r->width + br.width + br.x, 0, r->width, r->height }
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};
xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 3, borders);
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/* 1pixel border needs an additional line at the top */
if (p->border_style == BS_1PIXEL) {
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xcb_rectangle_t topline = { br.x, 0, con->rect.width + br.width + br.x, br.y };
xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, &topline);
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}
}
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/* if this is a borderless/1pixel window, we dont * need to render the
* decoration. */
if (p->border_style != BS_NORMAL)
goto copy_pixmaps;
/* 4: paint the bar */
xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->background });
xcb_rectangle_t drect = { con->deco_rect.x, con->deco_rect.y, con->deco_rect.width, con->deco_rect.height };
xcb_poly_fill_rectangle(conn, parent->pixmap, parent->pm_gc, 1, &drect);
/* 5: draw two unconnected lines in border color */
xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->border });
Rect *dr = &(con->deco_rect);
xcb_segment_t segments[] = {
{ dr->x, dr->y,
dr->x + dr->width - 1, dr->y },
{ dr->x + 2, dr->y + dr->height - 1,
dr->x + dr->width - 3, dr->y + dr->height - 1 }
};
xcb_poly_segment(conn, parent->pixmap, parent->pm_gc, 2, segments);
/* 6: draw the title */
uint32_t mask = XCB_GC_FOREGROUND | XCB_GC_BACKGROUND | XCB_GC_FONT;
uint32_t values[] = { p->color->text, p->color->background, config.font.id };
xcb_change_gc(conn, parent->pm_gc, mask, values);
int text_offset_y = config.font.height + (con->deco_rect.height - config.font.height) / 2 - 1;
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struct Window *win = con->window;
if (win == NULL || win->name_x == NULL) {
/* this is a non-leaf container, we need to make up a good description */
// TODO: use a good description instead of just "another container"
xcb_image_text_8(
conn,
strlen("another container"),
parent->pixmap,
parent->pm_gc,
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con->deco_rect.x + 2,
con->deco_rect.y + text_offset_y,
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"another container"
);
goto copy_pixmaps;
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}
int indent_level = 0,
indent_mult = 0;
Con *il_parent = parent;
if (il_parent->layout != L_STACKED) {
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while (1) {
//DLOG("il_parent = %p, layout = %d\n", il_parent, il_parent->layout);
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if (il_parent->layout == L_STACKED)
indent_level++;
if (il_parent->type == CT_WORKSPACE || il_parent->type == CT_DOCKAREA || il_parent->type == CT_OUTPUT)
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break;
il_parent = il_parent->parent;
indent_mult++;
}
}
//DLOG("indent_level = %d, indent_mult = %d\n", indent_level, indent_mult);
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int indent_px = (indent_level * 5) * indent_mult;
if (win->uses_net_wm_name)
xcb_image_text_16(
conn,
win->name_len,
parent->pixmap,
parent->pm_gc,
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con->deco_rect.x + 2 + indent_px,
con->deco_rect.y + text_offset_y,
(xcb_char2b_t*)win->name_x
);
else
xcb_image_text_8(
conn,
win->name_len,
parent->pixmap,
parent->pm_gc,
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con->deco_rect.x + 2 + indent_px,
con->deco_rect.y + text_offset_y,
win->name_x
);
copy_pixmaps:
xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
}
/*
* Recursively calls x_draw_decoration. This cannot be done in x_push_node
* because x_push_node uses focus order to recurse (see the comment above)
* while drawing the decoration needs to happen in the actual order.
*
*/
void x_deco_recurse(Con *con) {
Con *current;
bool leaf = TAILQ_EMPTY(&(con->nodes_head)) &&
TAILQ_EMPTY(&(con->floating_head));
con_state *state = state_for_frame(con->frame);
if (!leaf) {
TAILQ_FOREACH(current, &(con->nodes_head), nodes)
x_deco_recurse(current);
TAILQ_FOREACH(current, &(con->floating_head), floating_windows)
x_deco_recurse(current);
if (state->mapped)
xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
}
if ((con->type != CT_ROOT && con->type != CT_OUTPUT) &&
(!leaf || con->mapped))
x_draw_decoration(con);
}
/*
* This function pushes the properties of each node of the layout tree to
* X11 if they have changed (like the map state, position of the window, ).
* It recursively traverses all children of the given node.
*
*/
void x_push_node(Con *con) {
Con *current;
con_state *state;
Rect rect = con->rect;
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//DLOG("Pushing changes for node %p / %s\n", con, con->name);
state = state_for_frame(con->frame);
if (state->name != NULL) {
DLOG("pushing name %s for con %p\n", state->name, con);
xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->frame,
XCB_ATOM_WM_NAME, XCB_ATOM_STRING, 8, strlen(state->name), state->name);
FREE(state->name);
}
if (con->window == NULL) {
/* Calculate the height of all window decorations which will be drawn on to
* this frame. */
uint32_t max_y = 0, max_height = 0;
TAILQ_FOREACH(current, &(con->nodes_head), nodes) {
Rect *dr = &(current->deco_rect);
if (dr->y >= max_y && dr->height >= max_height) {
max_y = dr->y;
max_height = dr->height;
}
}
rect.height = max_y + max_height;
if (rect.height == 0)
con->mapped = false;
}
/* reparent the child window (when the window was moved due to a sticky
* container) */
if (state->need_reparent && con->window != NULL) {
DLOG("Reparenting child window\n");
/* Temporarily set the event masks to XCB_NONE so that we wont get
* UnmapNotify events (otherwise the handler would close the container).
* These events are generated automatically when reparenting. */
uint32_t values[] = { XCB_NONE };
xcb_change_window_attributes(conn, state->old_frame, XCB_CW_EVENT_MASK, values);
xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values);
xcb_reparent_window(conn, con->window->id, con->frame, 0, 0);
values[0] = FRAME_EVENT_MASK;
xcb_change_window_attributes(conn, state->old_frame, XCB_CW_EVENT_MASK, values);
values[0] = CHILD_EVENT_MASK;
xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values);
state->old_frame = XCB_NONE;
state->need_reparent = false;
con->ignore_unmap++;
DLOG("ignore_unmap for reparenting of con %p (win 0x%08x) is now %d\n",
con, con->window->id, con->ignore_unmap);
}
bool fake_notify = false;
/* Set new position if rect changed (and if height > 0) */
if (memcmp(&(state->rect), &rect, sizeof(Rect)) != 0 &&
rect.height > 0) {
/* We first create the new pixmap, then render to it, set it as the
* background and only afterwards change the window size. This reduces
* flickering. */
/* As the pixmap only depends on the size and not on the position, it
* is enough to check if width/height have changed. Also, we dont
* create a pixmap at all when the window is actually not visible
* (height == 0). */
if ((state->rect.width != rect.width ||
state->rect.height != rect.height)) {
if (con->pixmap == 0) {
con->pixmap = xcb_generate_id(conn);
con->pm_gc = xcb_generate_id(conn);
} else {
xcb_free_pixmap(conn, con->pixmap);
xcb_free_gc(conn, con->pm_gc);
}
xcb_create_pixmap(conn, root_depth, con->pixmap, con->frame, rect.width, rect.height);
/* For the graphics context, we disable GraphicsExposure events.
* Those will be sent when a CopyArea request cannot be fulfilled
* properly due to parts of the source being unmapped or otherwise
* unavailable. Since we always copy from pixmaps to windows, this
* is not a concern for us. */
uint32_t values[] = { 0 };
xcb_create_gc(conn, con->pm_gc, con->pixmap, XCB_GC_GRAPHICS_EXPOSURES, values);
con->pixmap_recreated = true;
/* Dont render the decoration for windows inside a stack which are
* not visible right now */
if (!con->parent ||
con->parent->layout != L_STACKED ||
TAILQ_FIRST(&(con->parent->focus_head)) == con)
/* Render the decoration now to make the correct decoration visible
* from the very first moment. Later calls will be cached, so this
* doesnt hurt performance. */
x_deco_recurse(con);
}
DLOG("setting rect (%d, %d, %d, %d)\n", rect.x, rect.y, rect.width, rect.height);
/* flush to ensure that the following commands are sent in a single
* buffer and will be processed directly afterwards (the contents of a
* window get lost when resizing it, therefore we want to provide it as
* fast as possible) */
xcb_flush(conn);
xcb_set_window_rect(conn, con->frame, rect);
if (con->pixmap != XCB_NONE)
xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
xcb_flush(conn);
memcpy(&(state->rect), &rect, sizeof(Rect));
fake_notify = true;
}
/* dito, but for child windows */
if (con->window != NULL &&
memcmp(&(state->window_rect), &(con->window_rect), sizeof(Rect)) != 0) {
DLOG("setting window rect (%d, %d, %d, %d)\n",
con->window_rect.x, con->window_rect.y, con->window_rect.width, con->window_rect.height);
xcb_set_window_rect(conn, con->window->id, con->window_rect);
memcpy(&(state->window_rect), &(con->window_rect), sizeof(Rect));
fake_notify = true;
}
/* Map if map state changed, also ensure that the child window
* is changed if we are mapped *and* in initial state (meaning the
* container was empty before, but now got a child). Unmaps are handled in
* x_push_node_unmaps(). */
if ((state->mapped != con->mapped || (con->mapped && state->initial)) &&
con->mapped) {
xcb_void_cookie_t cookie;
if (con->window != NULL) {
/* Set WM_STATE_NORMAL because GTK applications dont want to
* drag & drop if we dont. Also, xprop(1) needs it. */
long data[] = { XCB_ICCCM_WM_STATE_NORMAL, XCB_NONE };
xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->window->id,
A_WM_STATE, A_WM_STATE, 32, 2, data);
}
uint32_t values[1];
if (!state->child_mapped && con->window != NULL) {
cookie = xcb_map_window(conn, con->window->id);
/* We are interested in EnterNotifys as soon as the window is
* mapped */
values[0] = CHILD_EVENT_MASK;
xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values);
DLOG("mapping child window (serial %d)\n", cookie.sequence);
state->child_mapped = true;
}
cookie = xcb_map_window(conn, con->frame);
values[0] = FRAME_EVENT_MASK;
xcb_change_window_attributes(conn, con->frame, XCB_CW_EVENT_MASK, values);
/* copy the pixmap contents to the frame window immediately after mapping */
if (con->pixmap != XCB_NONE)
xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
xcb_flush(conn);
DLOG("mapping container %08x (serial %d)\n", con->frame, cookie.sequence);
state->mapped = con->mapped;
}
state->unmap_now = (state->mapped != con->mapped) && !con->mapped;
if (fake_notify) {
DLOG("Sending fake configure notify\n");
fake_absolute_configure_notify(con);
}
/* Handle all children and floating windows of this node. We recurse
* in focus order to display the focused client in a stack first when
* switching workspaces (reduces flickering). */
TAILQ_FOREACH(current, &(con->focus_head), focused)
x_push_node(current);
}
/*
* Same idea as in x_push_node(), but this function only unmaps windows. It is
* necessary to split this up to handle new fullscreen clients properly: The
* new window needs to be mapped and focus needs to be set *before* the
* underlying windows are unmapped. Otherwise, focus will revert to the
* PointerRoot and will then be set to the new window, generating unnecessary
* FocusIn/FocusOut events.
*
*/
static void x_push_node_unmaps(Con *con) {
Con *current;
con_state *state;
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//DLOG("Pushing changes (with unmaps) for node %p / %s\n", con, con->name);
state = state_for_frame(con->frame);
/* map/unmap if map state changed, also ensure that the child window
* is changed if we are mapped *and* in initial state (meaning the
* container was empty before, but now got a child) */
if (state->unmap_now) {
xcb_void_cookie_t cookie;
if (con->window != NULL) {
/* Set WM_STATE_WITHDRAWN, it seems like Java apps need it */
long data[] = { XCB_ICCCM_WM_STATE_WITHDRAWN, XCB_NONE };
xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->window->id,
A_WM_STATE, A_WM_STATE, 32, 2, data);
}
cookie = xcb_unmap_window(conn, con->frame);
DLOG("unmapping container (serial %d)\n", cookie.sequence);
/* we need to increase ignore_unmap for this container (if it
* contains a window) and for every window "under" this one which
* contains a window */
if (con->window != NULL) {
con->ignore_unmap++;
DLOG("ignore_unmap for con %p (frame 0x%08x) now %d\n", con, con->frame, con->ignore_unmap);
}
state->mapped = con->mapped;
}
/* handle all children and floating windows of this node */
TAILQ_FOREACH(current, &(con->nodes_head), nodes)
x_push_node_unmaps(current);
TAILQ_FOREACH(current, &(con->floating_head), floating_windows)
x_push_node_unmaps(current);
}
/*
* Pushes all changes (state of each node, see x_push_node() and the window
* stack) to X11.
*
* NOTE: We need to push the stack first so that the windows have the correct
* stacking order. This is relevant for workspace switching where we map the
* windows because mapping may generate EnterNotify events. When they are
* generated in the wrong order, this will cause focus problems when switching
* workspaces.
*
*/
void x_push_changes(Con *con) {
con_state *state;
xcb_query_pointer_cookie_t pointercookie;
/* If we need to warp later, we request the pointer position as soon as possible */
if (warp_to) {
pointercookie = xcb_query_pointer(conn, root);
}
DLOG("-- PUSHING WINDOW STACK --\n");
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//DLOG("Disabling EnterNotify\n");
uint32_t values[1] = { XCB_NONE };
CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
if (state->mapped)
xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);
}
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//DLOG("Done, EnterNotify disabled\n");
bool order_changed = false;
bool stacking_changed = false;
/* count first, necessary to (re)allocate memory for the bottom-to-top
* stack afterwards */
int cnt = 0;
CIRCLEQ_FOREACH_REVERSE(state, &state_head, state)
if (state->con && state->con->window)
cnt++;
if (cnt != btt_stack_num) {
btt_stack = srealloc(btt_stack, sizeof(xcb_window_t) * cnt);
btt_stack_num = cnt;
}
xcb_window_t *walk = btt_stack;
/* X11 correctly represents the stack if we push it from bottom to top */
CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
if (state->con && state->con->window)
memcpy(walk++, &(state->con->window->id), sizeof(xcb_window_t));
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//DLOG("stack: 0x%08x\n", state->id);
con_state *prev = CIRCLEQ_PREV(state, state);
con_state *old_prev = CIRCLEQ_PREV(state, old_state);
if (prev != old_prev)
order_changed = true;
if ((state->initial || order_changed) && prev != CIRCLEQ_END(&state_head)) {
stacking_changed = true;
//DLOG("Stacking 0x%08x above 0x%08x\n", prev->id, state->id);
uint32_t mask = 0;
mask |= XCB_CONFIG_WINDOW_SIBLING;
mask |= XCB_CONFIG_WINDOW_STACK_MODE;
uint32_t values[] = {state->id, XCB_STACK_MODE_ABOVE};
xcb_configure_window(conn, prev->id, mask, values);
}
state->initial = false;
}
/* If we re-stacked something (or a new window appeared), we need to update
* the _NET_CLIENT_LIST_STACKING hint */
if (stacking_changed)
ewmh_update_client_list_stacking(btt_stack, btt_stack_num);
DLOG("PUSHING CHANGES\n");
x_push_node(con);
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//DLOG("Re-enabling EnterNotify\n");
values[0] = FRAME_EVENT_MASK;
CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
if (state->mapped)
xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);
}
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//DLOG("Done, EnterNotify re-enabled\n");
x_deco_recurse(con);
xcb_window_t to_focus = focused->frame;
if (focused->window != NULL)
to_focus = focused->window->id;
if (focused_id != to_focus) {
if (!focused->mapped) {
DLOG("Not updating focus (to %p / %s), focused window is not mapped.\n", focused, focused->name);
/* Invalidate focused_id to correctly focus new windows with the same ID */
focused_id = XCB_NONE;
} else {
DLOG("Updating focus (focused: %p / %s)\n", focused, focused->name);
/* We remove XCB_EVENT_MASK_FOCUS_CHANGE from the event mask to get
* no focus change events for our own focus changes. We only want
* these generated by the clients. */
if (focused->window != NULL) {
values[0] = CHILD_EVENT_MASK & ~(XCB_EVENT_MASK_FOCUS_CHANGE);
xcb_change_window_attributes(conn, focused->window->id, XCB_CW_EVENT_MASK, values);
}
xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, to_focus, XCB_CURRENT_TIME);
if (focused->window != NULL) {
values[0] = CHILD_EVENT_MASK;
xcb_change_window_attributes(conn, focused->window->id, XCB_CW_EVENT_MASK, values);
}
if (focused->window != NULL &&
focused->window->needs_take_focus) {
send_take_focus(to_focus);
}
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ewmh_update_active_window(to_focus);
focused_id = to_focus;
}
}
if (focused_id == XCB_NONE) {
DLOG("Still no window focused, better set focus to the root window\n");
xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, root, XCB_CURRENT_TIME);
focused_id = root;
}
if (warp_to) {
xcb_query_pointer_reply_t *pointerreply = xcb_query_pointer_reply(conn, pointercookie, NULL);
if (!pointerreply) {
ELOG("Could not query pointer position, not warping pointer\n");
} else {
int mid_x = warp_to->x + (warp_to->width / 2);
int mid_y = warp_to->y + (warp_to->height / 2);
Output *current = get_output_containing(pointerreply->root_x, pointerreply->root_y);
Output *target = get_output_containing(mid_x, mid_y);
if (current != target)
xcb_warp_pointer(conn, XCB_NONE, root, 0, 0, 0, 0, mid_x, mid_y);
}
warp_to = NULL;
}
xcb_flush(conn);
DLOG("ENDING CHANGES\n");
/* Disable EnterWindow events for windows which will be unmapped in
* x_push_node_unmaps() now. Unmapping windows happens when switching
* workspaces. We want to avoid getting EnterNotifies during that phase
* because they would screw up our focus. One of these cases is having a
* stack with two windows. If the first window is focused and gets
* unmapped, the second one appears under the cursor and therefore gets an
* EnterNotify event. */
values[0] = FRAME_EVENT_MASK & ~XCB_EVENT_MASK_ENTER_WINDOW;
CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
if (!state->unmap_now)
continue;
xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);
}
/* Push all pending unmaps */
x_push_node_unmaps(con);
/* save the current stack as old stack */
CIRCLEQ_FOREACH(state, &state_head, state) {
CIRCLEQ_REMOVE(&old_state_head, state, old_state);
CIRCLEQ_INSERT_TAIL(&old_state_head, state, old_state);
}
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//CIRCLEQ_FOREACH(state, &old_state_head, old_state) {
// DLOG("old stack: 0x%08x\n", state->id);
//}
xcb_flush(conn);
}
/*
* Raises the specified container in the internal stack of X windows. The
* next call to x_push_changes() will make the change visible in X11.
*
*/
void x_raise_con(Con *con) {
con_state *state;
state = state_for_frame(con->frame);
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//DLOG("raising in new stack: %p / %s / %s / xid %08x\n", con, con->name, con->window ? con->window->name_json : "", state->id);
CIRCLEQ_REMOVE(&state_head, state, state);
CIRCLEQ_INSERT_HEAD(&state_head, state, state);
}
/*
* Sets the WM_NAME property (so, no UTF8, but used only for debugging anyways)
* of the given name. Used for properly tagging the windows for easily spotting
* i3 windows in xwininfo -root -all.
*
*/
void x_set_name(Con *con, const char *name) {
struct con_state *state;
if ((state = state_for_frame(con->frame)) == NULL) {
ELOG("window state not found\n");
return;
}
FREE(state->name);
state->name = sstrdup(name);
}
/*
* Sets up i3 specific atoms (I3_SOCKET_PATH and I3_CONFIG_PATH)
*
*/
void x_set_i3_atoms() {
xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_SOCKET_PATH, A_UTF8_STRING, 8,
(current_socketpath == NULL ? 0 : strlen(current_socketpath)),
current_socketpath);
xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_CONFIG_PATH, A_UTF8_STRING, 8,
strlen(current_configpath), current_configpath);
}
/*
* Set warp_to coordinates. This will trigger on the next call to
* x_push_changes().
*
*/
void x_set_warp_to(Rect *rect)
{
warp_to = rect;
}