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handlers.c
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handlers.c
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/*
* vim:ts=4:sw=4:expandtab
*
* i3 - an improved dynamic tiling window manager
* © 2009 Michael Stapelberg and contributors (see also: LICENSE)
*
* handlers.c: Small handlers for various events (keypresses, focus changes,
* …).
*
*/
#include "all.h"
#include <time.h>
#include <float.h>
#include <sys/time.h>
#include <xcb/randr.h>
#define SN_API_NOT_YET_FROZEN 1
#include <libsn/sn-monitor.h>
int randr_base = -1;
int xkb_base = -1;
int xkb_current_group;
/* After mapping/unmapping windows, a notify event is generated. However, we don’t want it,
since it’d trigger an infinite loop of switching between the different windows when
changing workspaces */
static SLIST_HEAD(ignore_head, Ignore_Event) ignore_events;
/*
* Adds the given sequence to the list of events which are ignored.
* If this ignore should only affect a specific response_type, pass
* response_type, otherwise, pass -1.
*
* Every ignored sequence number gets garbage collected after 5 seconds.
*
*/
void add_ignore_event(const int sequence, const int response_type) {
struct Ignore_Event *event = smalloc(sizeof(struct Ignore_Event));
event->sequence = sequence;
event->response_type = response_type;
event->added = time(NULL);
SLIST_INSERT_HEAD(&ignore_events, event, ignore_events);
}
/*
* Checks if the given sequence is ignored and returns true if so.
*
*/
bool event_is_ignored(const int sequence, const int response_type) {
struct Ignore_Event *event;
time_t now = time(NULL);
for (event = SLIST_FIRST(&ignore_events); event != SLIST_END(&ignore_events);) {
if ((now - event->added) > 5) {
struct Ignore_Event *save = event;
event = SLIST_NEXT(event, ignore_events);
SLIST_REMOVE(&ignore_events, save, Ignore_Event, ignore_events);
free(save);
} else
event = SLIST_NEXT(event, ignore_events);
}
SLIST_FOREACH(event, &ignore_events, ignore_events) {
if (event->sequence != sequence)
continue;
if (event->response_type != -1 &&
event->response_type != response_type)
continue;
/* instead of removing a sequence number we better wait until it gets
* garbage collected. it may generate multiple events (there are multiple
* enter_notifies for one configure_request, for example). */
//SLIST_REMOVE(&ignore_events, event, Ignore_Event, ignore_events);
//free(event);
return true;
}
return false;
}
/*
* Called with coordinates of an enter_notify event or motion_notify event
* to check if the user crossed virtual screen boundaries and adjust the
* current workspace, if so.
*
*/
static void check_crossing_screen_boundary(uint32_t x, uint32_t y) {
Output *output;
/* If the user disable focus follows mouse, we have nothing to do here */
if (config.disable_focus_follows_mouse)
return;
if ((output = get_output_containing(x, y)) == NULL) {
ELOG("ERROR: No such screen\n");
return;
}
if (output->con == NULL) {
ELOG("ERROR: The screen is not recognized by i3 (no container associated)\n");
return;
}
/* Focus the output on which the user moved their cursor */
Con *old_focused = focused;
Con *next = con_descend_focused(output_get_content(output->con));
/* Since we are switching outputs, this *must* be a different workspace, so
* call workspace_show() */
workspace_show(con_get_workspace(next));
con_focus(next);
/* If the focus changed, we re-render to get updated decorations */
if (old_focused != focused)
tree_render();
}
/*
* When the user moves the mouse pointer onto a window, this callback gets called.
*
*/
static void handle_enter_notify(xcb_enter_notify_event_t *event) {
Con *con;
last_timestamp = event->time;
DLOG("enter_notify for %08x, mode = %d, detail %d, serial %d\n",
event->event, event->mode, event->detail, event->sequence);
DLOG("coordinates %d, %d\n", event->event_x, event->event_y);
if (event->mode != XCB_NOTIFY_MODE_NORMAL) {
DLOG("This was not a normal notify, ignoring\n");
return;
}
/* Some events are not interesting, because they were not generated
* actively by the user, but by reconfiguration of windows */
if (event_is_ignored(event->sequence, XCB_ENTER_NOTIFY)) {
DLOG("Event ignored\n");
return;
}
bool enter_child = false;
/* Get container by frame or by child window */
if ((con = con_by_frame_id(event->event)) == NULL) {
con = con_by_window_id(event->event);
enter_child = true;
}
/* If we cannot find the container, the user moved their cursor to the root
* window. In this case and if they used it to a dock, we need to focus the
* workspace on the correct output. */
if (con == NULL || con->parent->type == CT_DOCKAREA) {
DLOG("Getting screen at %d x %d\n", event->root_x, event->root_y);
check_crossing_screen_boundary(event->root_x, event->root_y);
return;
}
/* see if the user entered the window on a certain window decoration */
layout_t layout = (enter_child ? con->parent->layout : con->layout);
if (layout == L_DEFAULT) {
Con *child;
TAILQ_FOREACH(child, &(con->nodes_head), nodes)
if (rect_contains(child->deco_rect, event->event_x, event->event_y)) {
LOG("using child %p / %s instead!\n", child, child->name);
con = child;
break;
}
}
if (config.disable_focus_follows_mouse)
return;
/* if this container is already focused, there is nothing to do. */
if (con == focused)
return;
/* Get the currently focused workspace to check if the focus change also
* involves changing workspaces. If so, we need to call workspace_show() to
* correctly update state and send the IPC event. */
Con *ws = con_get_workspace(con);
if (ws != con_get_workspace(focused))
workspace_show(ws);
focused_id = XCB_NONE;
con_focus(con_descend_focused(con));
tree_render();
}
/*
* When the user moves the mouse but does not change the active window
* (e.g. when having no windows opened but moving mouse on the root screen
* and crossing virtual screen boundaries), this callback gets called.
*
*/
static void handle_motion_notify(xcb_motion_notify_event_t *event) {
last_timestamp = event->time;
/* Skip events where the pointer was over a child window, we are only
* interested in events on the root window. */
if (event->child != XCB_NONE)
return;
Con *con;
if ((con = con_by_frame_id(event->event)) == NULL) {
DLOG("MotionNotify for an unknown container, checking if it crosses screen boundaries.\n");
check_crossing_screen_boundary(event->root_x, event->root_y);
return;
}
if (config.disable_focus_follows_mouse)
return;
if (con->layout != L_DEFAULT && con->layout != L_SPLITV && con->layout != L_SPLITH)
return;
/* see over which rect the user is */
Con *current;
TAILQ_FOREACH(current, &(con->nodes_head), nodes) {
if (!rect_contains(current->deco_rect, event->event_x, event->event_y))
continue;
/* We found the rect, let’s see if this window is focused */
if (TAILQ_FIRST(&(con->focus_head)) == current)
return;
con_focus(current);
x_push_changes(croot);
return;
}
}
/*
* Called when the keyboard mapping changes (for example by using Xmodmap),
* we need to update our key bindings then (re-translate symbols).
*
*/
static void handle_mapping_notify(xcb_mapping_notify_event_t *event) {
if (event->request != XCB_MAPPING_KEYBOARD &&
event->request != XCB_MAPPING_MODIFIER)
return;
DLOG("Received mapping_notify for keyboard or modifier mapping, re-grabbing keys\n");
xcb_refresh_keyboard_mapping(keysyms, event);
xcb_numlock_mask = aio_get_mod_mask_for(XCB_NUM_LOCK, keysyms);
ungrab_all_keys(conn);
translate_keysyms();
grab_all_keys(conn);
}
/*
* A new window appeared on the screen (=was mapped), so let’s manage it.
*
*/
static void handle_map_request(xcb_map_request_event_t *event) {
xcb_get_window_attributes_cookie_t cookie;
cookie = xcb_get_window_attributes_unchecked(conn, event->window);
DLOG("window = 0x%08x, serial is %d.\n", event->window, event->sequence);
add_ignore_event(event->sequence, -1);
manage_window(event->window, cookie, false);
}
/*
* Configure requests are received when the application wants to resize windows
* on their own.
*
* We generate a synthethic configure notify event to signalize the client its
* "new" position.
*
*/
static void handle_configure_request(xcb_configure_request_event_t *event) {
Con *con;
DLOG("window 0x%08x wants to be at %dx%d with %dx%d\n",
event->window, event->x, event->y, event->width, event->height);
/* For unmanaged windows, we just execute the configure request. As soon as
* it gets mapped, we will take over anyways. */
if ((con = con_by_window_id(event->window)) == NULL) {
DLOG("Configure request for unmanaged window, can do that.\n");
uint32_t mask = 0;
uint32_t values[7];
int c = 0;
#define COPY_MASK_MEMBER(mask_member, event_member) \
do { \
if (event->value_mask & mask_member) { \
mask |= mask_member; \
values[c++] = event->event_member; \
} \
} while (0)
COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_X, x);
COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_Y, y);
COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_WIDTH, width);
COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_HEIGHT, height);
COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_BORDER_WIDTH, border_width);
COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_SIBLING, sibling);
COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_STACK_MODE, stack_mode);
xcb_configure_window(conn, event->window, mask, values);
xcb_flush(conn);
return;
}
DLOG("Configure request!\n");
Con *workspace = con_get_workspace(con);
if (workspace && (strcmp(workspace->name, "__i3_scratch") == 0)) {
DLOG("This is a scratchpad container, ignoring ConfigureRequest\n");
goto out;
}
Con *fullscreen = con_get_fullscreen_covering_ws(workspace);
if (fullscreen != con && con_is_floating(con) && con_is_leaf(con)) {
/* find the height for the decorations */
int deco_height = con->deco_rect.height;
/* we actually need to apply the size/position changes to the *parent*
* container */
Rect bsr = con_border_style_rect(con);
if (con->border_style == BS_NORMAL) {
bsr.y += deco_height;
bsr.height -= deco_height;
}
Con *floatingcon = con->parent;
Rect newrect = floatingcon->rect;
if (event->value_mask & XCB_CONFIG_WINDOW_X) {
newrect.x = event->x + (-1) * bsr.x;
DLOG("proposed x = %d, new x is %d\n", event->x, newrect.x);
}
if (event->value_mask & XCB_CONFIG_WINDOW_Y) {
newrect.y = event->y + (-1) * bsr.y;
DLOG("proposed y = %d, new y is %d\n", event->y, newrect.y);
}
if (event->value_mask & XCB_CONFIG_WINDOW_WIDTH) {
newrect.width = event->width + (-1) * bsr.width;
newrect.width += con->border_width * 2;
DLOG("proposed width = %d, new width is %d (x11 border %d)\n",
event->width, newrect.width, con->border_width);
}
if (event->value_mask & XCB_CONFIG_WINDOW_HEIGHT) {
newrect.height = event->height + (-1) * bsr.height;
newrect.height += con->border_width * 2;
DLOG("proposed height = %d, new height is %d (x11 border %d)\n",
event->height, newrect.height, con->border_width);
}
DLOG("Container is a floating leaf node, will do that.\n");
floating_reposition(floatingcon, newrect);
return;
}
/* Dock windows can be reconfigured in their height and moved to another output. */
if (con->parent && con->parent->type == CT_DOCKAREA) {
DLOG("Reconfiguring dock window (con = %p).\n", con);
if (event->value_mask & XCB_CONFIG_WINDOW_HEIGHT) {
DLOG("Dock client wants to change height to %d, we can do that.\n", event->height);
con->geometry.height = event->height;
tree_render();
}
if (event->value_mask & XCB_CONFIG_WINDOW_X || event->value_mask & XCB_CONFIG_WINDOW_Y) {
int16_t x = event->value_mask & XCB_CONFIG_WINDOW_X ? event->x : (int16_t)con->geometry.x;
int16_t y = event->value_mask & XCB_CONFIG_WINDOW_Y ? event->y : (int16_t)con->geometry.y;
Con *current_output = con_get_output(con);
Output *target = get_output_containing(x, y);
if (target != NULL && current_output != target->con) {
DLOG("Dock client is requested to be moved to output %s, moving it there.\n", output_primary_name(target));
Match *match;
Con *nc = con_for_window(target->con, con->window, &match);
DLOG("Dock client will be moved to container %p.\n", nc);
con_detach(con);
con_attach(con, nc, false);
tree_render();
} else {
DLOG("Dock client will not be moved, we only support moving it to another output.\n");
}
}
goto out;
}
if (event->value_mask & XCB_CONFIG_WINDOW_STACK_MODE) {
DLOG("window 0x%08x wants to be stacked %d\n", event->window, event->stack_mode);
/* Emacs and IntelliJ Idea “request focus” by stacking their window
* above all others. */
if (event->stack_mode != XCB_STACK_MODE_ABOVE) {
DLOG("stack_mode != XCB_STACK_MODE_ABOVE, ignoring ConfigureRequest\n");
goto out;
}
if (fullscreen || !con_is_leaf(con)) {
DLOG("fullscreen or not a leaf, ignoring ConfigureRequest\n");
goto out;
}
if (workspace == NULL) {
DLOG("Window is not being managed, ignoring ConfigureRequest\n");
goto out;
}
if (config.focus_on_window_activation == FOWA_FOCUS || (config.focus_on_window_activation == FOWA_SMART && workspace_is_visible(workspace))) {
DLOG("Focusing con = %p\n", con);
workspace_show(workspace);
con_activate(con);
tree_render();
} else if (config.focus_on_window_activation == FOWA_URGENT || (config.focus_on_window_activation == FOWA_SMART && !workspace_is_visible(workspace))) {
DLOG("Marking con = %p urgent\n", con);
con_set_urgency(con, true);
tree_render();
} else {
DLOG("Ignoring request for con = %p.\n", con);
}
}
out:
fake_absolute_configure_notify(con);
}
/*
* Gets triggered upon a RandR screen change event, that is when the user
* changes the screen configuration in any way (mode, position, …)
*
*/
static void handle_screen_change(xcb_generic_event_t *e) {
DLOG("RandR screen change\n");
/* The geometry of the root window is used for “fullscreen global” and
* changes when new outputs are added. */
xcb_get_geometry_cookie_t cookie = xcb_get_geometry(conn, root);
xcb_get_geometry_reply_t *reply = xcb_get_geometry_reply(conn, cookie, NULL);
if (reply == NULL) {
ELOG("Could not get geometry of the root window, exiting\n");
exit(1);
}
DLOG("root geometry reply: (%d, %d) %d x %d\n", reply->x, reply->y, reply->width, reply->height);
croot->rect.width = reply->width;
croot->rect.height = reply->height;
randr_query_outputs();
scratchpad_fix_resolution();
ipc_send_event("output", I3_IPC_EVENT_OUTPUT, "{\"change\":\"unspecified\"}");
}
/*
* Our window decorations were unmapped. That means, the window will be killed
* now, so we better clean up before.
*
*/
static void handle_unmap_notify_event(xcb_unmap_notify_event_t *event) {
DLOG("UnmapNotify for 0x%08x (received from 0x%08x), serial %d\n", event->window, event->event, event->sequence);
xcb_get_input_focus_cookie_t cookie;
Con *con = con_by_window_id(event->window);
if (con == NULL) {
/* This could also be an UnmapNotify for the frame. We need to
* decrement the ignore_unmap counter. */
con = con_by_frame_id(event->window);
if (con == NULL) {
LOG("Not a managed window, ignoring UnmapNotify event\n");
return;
}
if (con->ignore_unmap > 0)
con->ignore_unmap--;
/* See the end of this function. */
cookie = xcb_get_input_focus(conn);
DLOG("ignore_unmap = %d for frame of container %p\n", con->ignore_unmap, con);
goto ignore_end;
}
/* See the end of this function. */
cookie = xcb_get_input_focus(conn);
if (con->ignore_unmap > 0) {
DLOG("ignore_unmap = %d, dec\n", con->ignore_unmap);
con->ignore_unmap--;
goto ignore_end;
}
/* Since we close the container, we need to unset _NET_WM_DESKTOP and
* _NET_WM_STATE according to the spec. */
xcb_delete_property(conn, event->window, A__NET_WM_DESKTOP);
xcb_delete_property(conn, event->window, A__NET_WM_STATE);
tree_close_internal(con, DONT_KILL_WINDOW, false);
tree_render();
ignore_end:
/* If the client (as opposed to i3) destroyed or unmapped a window, an
* EnterNotify event will follow (indistinguishable from an EnterNotify
* event caused by moving your mouse), causing i3 to set focus to whichever
* window is now visible.
*
* In a complex stacked or tabbed layout (take two v-split containers in a
* tabbed container), when the bottom window in tab2 is closed, the bottom
* window of tab1 is visible instead. X11 will thus send an EnterNotify
* event for the bottom window of tab1, while the focus should be set to
* the remaining window of tab2.
*
* Therefore, we ignore all EnterNotify events which have the same sequence
* as an UnmapNotify event. */
add_ignore_event(event->sequence, XCB_ENTER_NOTIFY);
/* Since we just ignored the sequence of this UnmapNotify, we want to make
* sure that following events use a different sequence. When putting xterm
* into fullscreen and moving the pointer to a different window, without
* using GetInputFocus, subsequent (legitimate) EnterNotify events arrived
* with the same sequence and thus were ignored (see ticket #609). */
free(xcb_get_input_focus_reply(conn, cookie, NULL));
}
/*
* A destroy notify event is sent when the window is not unmapped, but
* immediately destroyed (for example when starting a window and immediately
* killing the program which started it).
*
* We just pass on the event to the unmap notify handler (by copying the
* important fields in the event data structure).
*
*/
static void handle_destroy_notify_event(xcb_destroy_notify_event_t *event) {
DLOG("destroy notify for 0x%08x, 0x%08x\n", event->event, event->window);
xcb_unmap_notify_event_t unmap;
unmap.sequence = event->sequence;
unmap.event = event->event;
unmap.window = event->window;
handle_unmap_notify_event(&unmap);
}
static bool window_name_changed(i3Window *window, char *old_name) {
if ((old_name == NULL) && (window->name == NULL))
return false;
/* Either the old or the new one is NULL, but not both. */
if ((old_name == NULL) ^ (window->name == NULL))
return true;
return (strcmp(old_name, i3string_as_utf8(window->name)) != 0);
}
/*
* Called when a window changes its title
*
*/
static bool handle_windowname_change(void *data, xcb_connection_t *conn, uint8_t state,
xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) {
Con *con;
if ((con = con_by_window_id(window)) == NULL || con->window == NULL)
return false;
char *old_name = (con->window->name != NULL ? sstrdup(i3string_as_utf8(con->window->name)) : NULL);
window_update_name(con->window, prop, false);
x_push_changes(croot);
if (window_name_changed(con->window, old_name))
ipc_send_window_event("title", con);
FREE(old_name);
return true;
}
/*
* Handles legacy window name updates (WM_NAME), see also src/window.c,
* window_update_name_legacy().
*
*/
static bool handle_windowname_change_legacy(void *data, xcb_connection_t *conn, uint8_t state,
xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) {
Con *con;
if ((con = con_by_window_id(window)) == NULL || con->window == NULL)
return false;
char *old_name = (con->window->name != NULL ? sstrdup(i3string_as_utf8(con->window->name)) : NULL);
window_update_name_legacy(con->window, prop, false);
x_push_changes(croot);
if (window_name_changed(con->window, old_name))
ipc_send_window_event("title", con);
FREE(old_name);
return true;
}
/*
* Called when a window changes its WM_WINDOW_ROLE.
*
*/
static bool handle_windowrole_change(void *data, xcb_connection_t *conn, uint8_t state,
xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) {
Con *con;
if ((con = con_by_window_id(window)) == NULL || con->window == NULL)
return false;
window_update_role(con->window, prop, false);
return true;
}
/*
* Expose event means we should redraw our windows (= title bar)
*
*/
static void handle_expose_event(xcb_expose_event_t *event) {
Con *parent;
DLOG("window = %08x\n", event->window);
if ((parent = con_by_frame_id(event->window)) == NULL) {
LOG("expose event for unknown window, ignoring\n");
return;
}
/* Since we render to our surface on every change anyways, expose events
* only tell us that the X server lost (parts of) the window contents. */
draw_util_copy_surface(&(parent->frame_buffer), &(parent->frame),
0, 0, 0, 0, parent->rect.width, parent->rect.height);
xcb_flush(conn);
}
#define _NET_WM_MOVERESIZE_SIZE_TOPLEFT 0
#define _NET_WM_MOVERESIZE_SIZE_TOP 1
#define _NET_WM_MOVERESIZE_SIZE_TOPRIGHT 2
#define _NET_WM_MOVERESIZE_SIZE_RIGHT 3
#define _NET_WM_MOVERESIZE_SIZE_BOTTOMRIGHT 4
#define _NET_WM_MOVERESIZE_SIZE_BOTTOM 5
#define _NET_WM_MOVERESIZE_SIZE_BOTTOMLEFT 6
#define _NET_WM_MOVERESIZE_SIZE_LEFT 7
#define _NET_WM_MOVERESIZE_MOVE 8 /* movement only */
#define _NET_WM_MOVERESIZE_SIZE_KEYBOARD 9 /* size via keyboard */
#define _NET_WM_MOVERESIZE_MOVE_KEYBOARD 10 /* move via keyboard */
#define _NET_WM_MOVERESIZE_CANCEL 11 /* cancel operation */
#define _NET_MOVERESIZE_WINDOW_X (1 << 8)
#define _NET_MOVERESIZE_WINDOW_Y (1 << 9)
#define _NET_MOVERESIZE_WINDOW_WIDTH (1 << 10)
#define _NET_MOVERESIZE_WINDOW_HEIGHT (1 << 11)
/*
* Handle client messages (EWMH)
*
*/
static void handle_client_message(xcb_client_message_event_t *event) {
/* If this is a startup notification ClientMessage, the library will handle
* it and call our monitor_event() callback. */
if (sn_xcb_display_process_event(sndisplay, (xcb_generic_event_t *)event))
return;
LOG("ClientMessage for window 0x%08x\n", event->window);
if (event->type == A__NET_WM_STATE) {
if (event->format != 32 ||
(event->data.data32[1] != A__NET_WM_STATE_FULLSCREEN &&
event->data.data32[1] != A__NET_WM_STATE_DEMANDS_ATTENTION &&
event->data.data32[1] != A__NET_WM_STATE_STICKY)) {
DLOG("Unknown atom in clientmessage of type %d\n", event->data.data32[1]);
return;
}
Con *con = con_by_window_id(event->window);
if (con == NULL) {
DLOG("Could not get window for client message\n");
return;
}
if (event->data.data32[1] == A__NET_WM_STATE_FULLSCREEN) {
/* Check if the fullscreen state should be toggled */
if ((con->fullscreen_mode != CF_NONE &&
(event->data.data32[0] == _NET_WM_STATE_REMOVE ||
event->data.data32[0] == _NET_WM_STATE_TOGGLE)) ||
(con->fullscreen_mode == CF_NONE &&
(event->data.data32[0] == _NET_WM_STATE_ADD ||
event->data.data32[0] == _NET_WM_STATE_TOGGLE))) {
DLOG("toggling fullscreen\n");
con_toggle_fullscreen(con, CF_OUTPUT);
}
} else if (event->data.data32[1] == A__NET_WM_STATE_DEMANDS_ATTENTION) {
/* Check if the urgent flag must be set or not */
if (event->data.data32[0] == _NET_WM_STATE_ADD)
con_set_urgency(con, true);
else if (event->data.data32[0] == _NET_WM_STATE_REMOVE)
con_set_urgency(con, false);
else if (event->data.data32[0] == _NET_WM_STATE_TOGGLE)
con_set_urgency(con, !con->urgent);
} else if (event->data.data32[1] == A__NET_WM_STATE_STICKY) {
DLOG("Received a client message to modify _NET_WM_STATE_STICKY.\n");
if (event->data.data32[0] == _NET_WM_STATE_ADD)
con->sticky = true;
else if (event->data.data32[0] == _NET_WM_STATE_REMOVE)
con->sticky = false;
else if (event->data.data32[0] == _NET_WM_STATE_TOGGLE)
con->sticky = !con->sticky;
DLOG("New sticky status for con = %p is %i.\n", con, con->sticky);
ewmh_update_sticky(con->window->id, con->sticky);
output_push_sticky_windows(focused);
ewmh_update_wm_desktop();
}
tree_render();
} else if (event->type == A__NET_ACTIVE_WINDOW) {
if (event->format != 32)
return;
DLOG("_NET_ACTIVE_WINDOW: Window 0x%08x should be activated\n", event->window);
Con *con = con_by_window_id(event->window);
if (con == NULL) {
DLOG("Could not get window for client message\n");
return;
}
Con *ws = con_get_workspace(con);
if (ws == NULL) {
DLOG("Window is not being managed, ignoring _NET_ACTIVE_WINDOW\n");
return;
}
if (con_is_internal(ws) && ws != workspace_get("__i3_scratch", NULL)) {
DLOG("Workspace is internal but not scratchpad, ignoring _NET_ACTIVE_WINDOW\n");
return;
}
/* data32[0] indicates the source of the request (application or pager) */
if (event->data.data32[0] == 2) {
/* Always focus the con if it is from a pager, because this is most
* likely from some user action */
DLOG("This request came from a pager. Focusing con = %p\n", con);
if (con_is_internal(ws)) {
scratchpad_show(con);
} else {
workspace_show(ws);
/* Re-set focus, even if unchanged from i3’s perspective. */
focused_id = XCB_NONE;
con_activate(con);
}
} else {
/* Request is from an application. */
if (con_is_internal(ws)) {
DLOG("Ignoring request to make con = %p active because it's on an internal workspace.\n", con);
return;
}
if (config.focus_on_window_activation == FOWA_FOCUS || (config.focus_on_window_activation == FOWA_SMART && workspace_is_visible(ws))) {
DLOG("Focusing con = %p\n", con);
workspace_show(ws);
con_activate(con);
} else if (config.focus_on_window_activation == FOWA_URGENT || (config.focus_on_window_activation == FOWA_SMART && !workspace_is_visible(ws))) {
DLOG("Marking con = %p urgent\n", con);
con_set_urgency(con, true);
} else
DLOG("Ignoring request for con = %p.\n", con);
}
tree_render();
} else if (event->type == A_I3_SYNC) {
xcb_window_t window = event->data.data32[0];
uint32_t rnd = event->data.data32[1];
sync_respond(window, rnd);
} else if (event->type == A__NET_REQUEST_FRAME_EXTENTS) {
/*
* A client can request an estimate for the frame size which the window
* manager will put around it before actually mapping its window. Java
* does this (as of openjdk-7).
*
* Note that the calculation below is not entirely accurate — once you
* set a different border type, it’s off. We _could_ request all the
* window properties (which have to be set up at this point according
* to EWMH), but that seems rather elaborate. The standard explicitly
* says the application must cope with an estimate that is not entirely
* accurate.
*/
DLOG("_NET_REQUEST_FRAME_EXTENTS for window 0x%08x\n", event->window);
/* The reply data: approximate frame size */
Rect r = {
config.default_border_width, /* left */
config.default_border_width, /* right */
render_deco_height(), /* top */
config.default_border_width /* bottom */
};
xcb_change_property(
conn,
XCB_PROP_MODE_REPLACE,
event->window,
A__NET_FRAME_EXTENTS,
XCB_ATOM_CARDINAL, 32, 4,
&r);
xcb_flush(conn);
} else if (event->type == A__NET_CURRENT_DESKTOP) {
/* This request is used by pagers and bars to change the current
* desktop likely as a result of some user action. We interpret this as
* a request to focus the given workspace. See
* https://standards.freedesktop.org/wm-spec/latest/ar01s03.html#idm140251368135008
* */
DLOG("Request to change current desktop to index %d\n", event->data.data32[0]);
Con *ws = ewmh_get_workspace_by_index(event->data.data32[0]);
if (ws == NULL) {
ELOG("Could not determine workspace for this index, ignoring request.\n");
return;
}
DLOG("Handling request to focus workspace %s\n", ws->name);
workspace_show(ws);
tree_render();
} else if (event->type == A__NET_WM_DESKTOP) {
uint32_t index = event->data.data32[0];
DLOG("Request to move window %d to EWMH desktop index %d\n", event->window, index);
Con *con = con_by_window_id(event->window);
if (con == NULL) {
DLOG("Couldn't find con for window %d, ignoring the request.\n", event->window);
return;
}
if (index == NET_WM_DESKTOP_ALL) {
/* The window is requesting to be visible on all workspaces, so
* let's float it and make it sticky. */
DLOG("The window was requested to be visible on all workspaces, making it sticky and floating.\n");
floating_enable(con, false);
con->sticky = true;
ewmh_update_sticky(con->window->id, true);
output_push_sticky_windows(focused);
} else {
Con *ws = ewmh_get_workspace_by_index(index);
if (ws == NULL) {
ELOG("Could not determine workspace for this index, ignoring request.\n");
return;
}
con_move_to_workspace(con, ws, true, false, false);
}
tree_render();
ewmh_update_wm_desktop();
} else if (event->type == A__NET_CLOSE_WINDOW) {
/*
* Pagers wanting to close a window MUST send a _NET_CLOSE_WINDOW
* client message request to the root window.
* https://standards.freedesktop.org/wm-spec/wm-spec-latest.html#idm140200472668896
*/
Con *con = con_by_window_id(event->window);
if (con) {
DLOG("Handling _NET_CLOSE_WINDOW request (con = %p)\n", con);
if (event->data.data32[0])
last_timestamp = event->data.data32[0];
tree_close_internal(con, KILL_WINDOW, false);
tree_render();
} else {
DLOG("Couldn't find con for _NET_CLOSE_WINDOW request. (window = %d)\n", event->window);
}
} else if (event->type == A__NET_WM_MOVERESIZE) {
/*
* Client-side decorated Gtk3 windows emit this signal when being
* dragged by their GtkHeaderBar
*/
Con *con = con_by_window_id(event->window);
if (!con || !con_is_floating(con)) {
DLOG("Couldn't find con for _NET_WM_MOVERESIZE request, or con not floating (window = %d)\n", event->window);
return;
}
DLOG("Handling _NET_WM_MOVERESIZE request (con = %p)\n", con);
uint32_t direction = event->data.data32[2];
uint32_t x_root = event->data.data32[0];
uint32_t y_root = event->data.data32[1];
/* construct fake xcb_button_press_event_t */
xcb_button_press_event_t fake = {
.root_x = x_root,
.root_y = y_root,
.event_x = x_root - (con->rect.x),
.event_y = y_root - (con->rect.y)};
switch (direction) {
case _NET_WM_MOVERESIZE_MOVE:
floating_drag_window(con->parent, &fake);
break;
case _NET_WM_MOVERESIZE_SIZE_TOPLEFT... _NET_WM_MOVERESIZE_SIZE_LEFT:
floating_resize_window(con->parent, false, &fake);
break;
default:
DLOG("_NET_WM_MOVERESIZE direction %d not implemented\n", direction);
break;
}
} else if (event->type == A__NET_MOVERESIZE_WINDOW) {
DLOG("Received _NET_MOVE_RESIZE_WINDOW. Handling by faking a configure request.\n");
void *_generated_event = scalloc(32, 1);
xcb_configure_request_event_t *generated_event = _generated_event;
generated_event->window = event->window;
generated_event->response_type = XCB_CONFIGURE_REQUEST;
generated_event->value_mask = 0;
if (event->data.data32[0] & _NET_MOVERESIZE_WINDOW_X) {
generated_event->value_mask |= XCB_CONFIG_WINDOW_X;
generated_event->x = event->data.data32[1];
}
if (event->data.data32[0] & _NET_MOVERESIZE_WINDOW_Y) {
generated_event->value_mask |= XCB_CONFIG_WINDOW_Y;
generated_event->y = event->data.data32[2];
}
if (event->data.data32[0] & _NET_MOVERESIZE_WINDOW_WIDTH) {
generated_event->value_mask |= XCB_CONFIG_WINDOW_WIDTH;
generated_event->width = event->data.data32[3];
}
if (event->data.data32[0] & _NET_MOVERESIZE_WINDOW_HEIGHT) {
generated_event->value_mask |= XCB_CONFIG_WINDOW_HEIGHT;
generated_event->height = event->data.data32[4];
}
handle_configure_request(generated_event);
FREE(generated_event);
} else {
DLOG("Skipping client message for unhandled type %d\n", event->type);
}
}
bool handle_window_type(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
xcb_atom_t atom, xcb_get_property_reply_t *reply) {
Con *con;
if ((con = con_by_window_id(window)) == NULL || con->window == NULL)
return false;
window_update_type(con->window, reply);
return true;
}
/*
* Handles the size hints set by a window, but currently only the part necessary for displaying
* clients proportionally inside their frames (mplayer for example)
*
* See ICCCM 4.1.2.3 for more details
*
*/
static bool handle_normal_hints(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
xcb_atom_t name, xcb_get_property_reply_t *reply) {
Con *con = con_by_window_id(window);
if (con == NULL) {
DLOG("Received WM_NORMAL_HINTS for unknown client\n");
return false;
}
xcb_size_hints_t size_hints;
/* If the hints were already in this event, use them, if not, request them */
if (reply != NULL) {
xcb_icccm_get_wm_size_hints_from_reply(&size_hints, reply);
} else {
xcb_icccm_get_wm_normal_hints_reply(conn, xcb_icccm_get_wm_normal_hints_unchecked(conn, con->window->id), &size_hints, NULL);
}
int win_width = con->window_rect.width;
int win_height = con->window_rect.height;
if ((size_hints.flags & XCB_ICCCM_SIZE_HINT_P_MIN_SIZE)) {
DLOG("Minimum size: %d (width) x %d (height)\n", size_hints.min_width, size_hints.min_height);
con->window->min_width = size_hints.min_width;
con->window->min_height = size_hints.min_height;
}
if (con_is_floating(con)) {
win_width = MAX(win_width, con->window->min_width);
win_height = MAX(win_height, con->window->min_height);
}
bool changed = false;
if ((size_hints.flags & XCB_ICCCM_SIZE_HINT_P_RESIZE_INC)) {
if (size_hints.width_inc > 0 && size_hints.width_inc < 0xFFFF) {
if (con->window->width_increment != size_hints.width_inc) {
con->window->width_increment = size_hints.width_inc;
changed = true;
}
}
if (size_hints.height_inc > 0 && size_hints.height_inc < 0xFFFF) {
if (con->window->height_increment != size_hints.height_inc) {
con->window->height_increment = size_hints.height_inc;