515 lines
19 KiB
C
515 lines
19 KiB
C
/*
|
||
* vim:ts=4:sw=4:expandtab
|
||
*
|
||
* i3 - an improved dynamic tiling window manager
|
||
*
|
||
* © 2009-2010 Michael Stapelberg and contributors
|
||
*
|
||
* See file LICENSE for license information.
|
||
*
|
||
* src/floating.c: contains all functions for handling floating clients
|
||
*
|
||
*/
|
||
|
||
|
||
#include "all.h"
|
||
|
||
extern xcb_connection_t *conn;
|
||
|
||
void floating_enable(Con *con, bool automatic) {
|
||
bool set_focus = true;
|
||
|
||
if (con_is_floating(con)) {
|
||
LOG("Container is already in floating mode, not doing anything.\n");
|
||
return;
|
||
}
|
||
|
||
/* 1: If the container is a workspace container, we need to create a new
|
||
* split-container with the same orientation and make that one floating. We
|
||
* cannot touch the workspace container itself because floating containers
|
||
* are children of the workspace. */
|
||
if (con->type == CT_WORKSPACE) {
|
||
LOG("This is a workspace, creating new container around content\n");
|
||
/* TODO: refactor this with src/con.c:con_set_layout */
|
||
Con *new = con_new(NULL);
|
||
new->parent = con;
|
||
new->orientation = con->orientation;
|
||
|
||
/* since the new container will be set into floating mode directly
|
||
* afterwards, we need to copy the workspace rect. */
|
||
memcpy(&(new->rect), &(con->rect), sizeof(Rect));
|
||
|
||
Con *old_focused = TAILQ_FIRST(&(con->focus_head));
|
||
if (old_focused == TAILQ_END(&(con->focus_head)))
|
||
old_focused = NULL;
|
||
|
||
/* 4: move the existing cons of this workspace below the new con */
|
||
DLOG("Moving cons\n");
|
||
Con *child;
|
||
while (!TAILQ_EMPTY(&(con->nodes_head))) {
|
||
child = TAILQ_FIRST(&(con->nodes_head));
|
||
con_detach(child);
|
||
con_attach(child, new, true);
|
||
}
|
||
|
||
/* 4: attach the new split container to the workspace */
|
||
DLOG("Attaching new split to ws\n");
|
||
con_attach(new, con, false);
|
||
|
||
if (old_focused)
|
||
con_focus(old_focused);
|
||
|
||
con = new;
|
||
set_focus = false;
|
||
}
|
||
|
||
/* 1: detach the container from its parent */
|
||
/* TODO: refactor this with tree_close() */
|
||
TAILQ_REMOVE(&(con->parent->nodes_head), con, nodes);
|
||
TAILQ_REMOVE(&(con->parent->focus_head), con, focused);
|
||
|
||
con_fix_percent(con->parent);
|
||
|
||
/* 2: create a new container to render the decoration on, add
|
||
* it as a floating window to the workspace */
|
||
Con *nc = con_new(NULL);
|
||
/* we need to set the parent afterwards instead of passing it as an
|
||
* argument to con_new() because nc would be inserted into the tiling layer
|
||
* otherwise. */
|
||
nc->parent = con_get_workspace(con);
|
||
|
||
/* check if the parent container is empty and close it if so */
|
||
if ((con->parent->type == CT_CON || con->parent->type == CT_FLOATING_CON) && con_num_children(con->parent) == 0) {
|
||
DLOG("Old container empty after setting this child to floating, closing\n");
|
||
tree_close(con->parent, false, false);
|
||
}
|
||
|
||
char *name;
|
||
asprintf(&name, "[i3 con] floatingcon around %p", con);
|
||
x_set_name(nc, name);
|
||
free(name);
|
||
|
||
/* find the height for the decorations */
|
||
i3Font *font = load_font(conn, config.font);
|
||
int deco_height = font->height + 5;
|
||
|
||
DLOG("Original rect: (%d, %d) with %d x %d\n", con->rect.x, con->rect.y, con->rect.width, con->rect.height);
|
||
nc->rect = con->rect;
|
||
/* add pixels for the decoration */
|
||
/* TODO: don’t add them when the user automatically puts new windows into
|
||
* 1pixel/borderless mode */
|
||
nc->rect.height += deco_height + 4;
|
||
nc->rect.width += 4;
|
||
DLOG("Floating rect: (%d, %d) with %d x %d\n", nc->rect.x, nc->rect.y, nc->rect.width, nc->rect.height);
|
||
nc->orientation = NO_ORIENTATION;
|
||
nc->type = CT_FLOATING_CON;
|
||
TAILQ_INSERT_TAIL(&(nc->parent->floating_head), nc, floating_windows);
|
||
TAILQ_INSERT_TAIL(&(nc->parent->focus_head), nc, focused);
|
||
|
||
/* 3: attach the child to the new parent container */
|
||
con->parent = nc;
|
||
con->percent = 1.0;
|
||
con->floating = FLOATING_USER_ON;
|
||
|
||
/* Some clients (like GIMP’s color picker window) get mapped
|
||
* to (0, 0), so we push them to a reasonable position
|
||
* (centered over their leader) */
|
||
if (nc->rect.x == 0 && nc->rect.y == 0) {
|
||
Con *leader;
|
||
if (con->window && con->window->leader != XCB_NONE &&
|
||
(leader = con_by_window_id(con->window->leader)) != NULL) {
|
||
DLOG("Centering above leader\n");
|
||
nc->rect.x = leader->rect.x + (leader->rect.width / 2) - (nc->rect.width / 2);
|
||
nc->rect.y = leader->rect.y + (leader->rect.height / 2) - (nc->rect.height / 2);
|
||
} else {
|
||
/* center the window on workspace as fallback */
|
||
Con *ws = nc->parent;
|
||
nc->rect.x = ws->rect.x + (ws->rect.width / 2) - (nc->rect.width / 2);
|
||
nc->rect.y = ws->rect.y + (ws->rect.height / 2) - (nc->rect.height / 2);
|
||
}
|
||
}
|
||
|
||
/* render the cons to get initial window_rect correct */
|
||
render_con(nc, false);
|
||
render_con(con, false);
|
||
|
||
TAILQ_INSERT_TAIL(&(nc->nodes_head), con, nodes);
|
||
TAILQ_INSERT_TAIL(&(nc->focus_head), con, focused);
|
||
// TODO: don’t influence focus handling when Con was not focused before.
|
||
if (set_focus)
|
||
con_focus(con);
|
||
}
|
||
|
||
void floating_disable(Con *con, bool automatic) {
|
||
if (!con_is_floating(con)) {
|
||
LOG("Container isn't floating, not doing anything.\n");
|
||
return;
|
||
}
|
||
|
||
/* 1: detach from parent container */
|
||
TAILQ_REMOVE(&(con->parent->nodes_head), con, nodes);
|
||
TAILQ_REMOVE(&(con->parent->focus_head), con, focused);
|
||
|
||
/* 2: kill parent container */
|
||
TAILQ_REMOVE(&(con->parent->parent->floating_head), con->parent, floating_windows);
|
||
TAILQ_REMOVE(&(con->parent->parent->focus_head), con->parent, focused);
|
||
tree_close(con->parent, false, false);
|
||
|
||
/* 3: re-attach to the parent of the currently focused con on the workspace
|
||
* this floating con was on */
|
||
Con *focused = con_descend_focused(con_get_workspace(con));
|
||
/* if there is no other container on this workspace, focused will be the
|
||
* workspace itself */
|
||
if (focused->type == CT_WORKSPACE)
|
||
con->parent = focused;
|
||
else con->parent = focused->parent;
|
||
|
||
/* XXX: We adjust the percentage value to start with a fair value. Floating
|
||
* cons always have 1.0 as percent which doesn’t work so well when
|
||
* re-inserting (the formerly floating con would get 50% of the target
|
||
* con). */
|
||
con->percent = (1.0 / con_num_children(con->parent));
|
||
|
||
TAILQ_INSERT_TAIL(&(con->parent->nodes_head), con, nodes);
|
||
TAILQ_INSERT_TAIL(&(con->parent->focus_head), con, focused);
|
||
|
||
con->floating = FLOATING_USER_OFF;
|
||
|
||
con_fix_percent(con->parent);
|
||
// TODO: don’t influence focus handling when Con was not focused before.
|
||
con_focus(con);
|
||
}
|
||
|
||
/*
|
||
* Toggles floating mode for the given container.
|
||
*
|
||
* If the automatic flag is set to true, this was an automatic update by a change of the
|
||
* window class from the application which can be overwritten by the user.
|
||
*
|
||
*/
|
||
void toggle_floating_mode(Con *con, bool automatic) {
|
||
/* see if the client is already floating */
|
||
if (con_is_floating(con)) {
|
||
LOG("already floating, re-setting to tiling\n");
|
||
|
||
floating_disable(con, automatic);
|
||
return;
|
||
}
|
||
|
||
floating_enable(con, automatic);
|
||
}
|
||
|
||
/*
|
||
* Raises the given container in the list of floating containers
|
||
*
|
||
*/
|
||
void floating_raise_con(Con *con) {
|
||
DLOG("Raising floating con %p / %s\n", con, con->name);
|
||
TAILQ_REMOVE(&(con->parent->floating_head), con, floating_windows);
|
||
TAILQ_INSERT_TAIL(&(con->parent->floating_head), con, floating_windows);
|
||
}
|
||
|
||
DRAGGING_CB(drag_window_callback) {
|
||
struct xcb_button_press_event_t *event = extra;
|
||
|
||
/* Reposition the client correctly while moving */
|
||
con->rect.x = old_rect->x + (new_x - event->root_x);
|
||
con->rect.y = old_rect->y + (new_y - event->root_y);
|
||
/* TODO: don’t re-render the whole tree just because we change
|
||
* coordinates of a floating window */
|
||
tree_render();
|
||
x_push_changes(croot);
|
||
}
|
||
|
||
/*
|
||
* Called when the user clicked on the titlebar of a floating window.
|
||
* Calls the drag_pointer function with the drag_window callback
|
||
*
|
||
*/
|
||
void floating_drag_window(Con *con, xcb_button_press_event_t *event) {
|
||
DLOG("floating_drag_window\n");
|
||
|
||
drag_pointer(con, event, XCB_NONE, BORDER_TOP /* irrelevant */, drag_window_callback, event);
|
||
tree_render();
|
||
}
|
||
|
||
/*
|
||
* This is an ugly data structure which we need because there is no standard
|
||
* way of having nested functions (only available as a gcc extension at the
|
||
* moment, clang doesn’t support it) or blocks (only available as a clang
|
||
* extension and only on Mac OS X systems at the moment).
|
||
*
|
||
*/
|
||
struct resize_window_callback_params {
|
||
border_t corner;
|
||
bool proportional;
|
||
xcb_button_press_event_t *event;
|
||
};
|
||
|
||
DRAGGING_CB(resize_window_callback) {
|
||
struct resize_window_callback_params *params = extra;
|
||
xcb_button_press_event_t *event = params->event;
|
||
border_t corner = params->corner;
|
||
|
||
int32_t dest_x = con->rect.x;
|
||
int32_t dest_y = con->rect.y;
|
||
uint32_t dest_width;
|
||
uint32_t dest_height;
|
||
|
||
double ratio = (double) old_rect->width / old_rect->height;
|
||
|
||
/* First guess: We resize by exactly the amount the mouse moved,
|
||
* taking into account in which corner the client was grabbed */
|
||
if (corner & BORDER_LEFT)
|
||
dest_width = old_rect->width - (new_x - event->root_x);
|
||
else dest_width = old_rect->width + (new_x - event->root_x);
|
||
|
||
if (corner & BORDER_TOP)
|
||
dest_height = old_rect->height - (new_y - event->root_y);
|
||
else dest_height = old_rect->height + (new_y - event->root_y);
|
||
|
||
/* TODO: minimum window size */
|
||
#if 0
|
||
/* Obey minimum window size */
|
||
dest_width = max(dest_width, client_min_width(client));
|
||
dest_height = max(dest_height, client_min_height(client));
|
||
#endif
|
||
|
||
/* User wants to keep proportions, so we may have to adjust our values */
|
||
if (params->proportional) {
|
||
dest_width = max(dest_width, (int) (dest_height * ratio));
|
||
dest_height = max(dest_height, (int) (dest_width / ratio));
|
||
}
|
||
|
||
/* If not the lower right corner is grabbed, we must also reposition
|
||
* the client by exactly the amount we resized it */
|
||
if (corner & BORDER_LEFT)
|
||
dest_x = old_rect->x + (old_rect->width - dest_width);
|
||
|
||
if (corner & BORDER_TOP)
|
||
dest_y = old_rect->y + (old_rect->height - dest_height);
|
||
|
||
con->rect = (Rect) { dest_x, dest_y, dest_width, dest_height };
|
||
|
||
/* TODO: don’t re-render the whole tree just because we change
|
||
* coordinates of a floating window */
|
||
tree_render();
|
||
x_push_changes(croot);
|
||
}
|
||
|
||
/*
|
||
* Called when the user clicked on a floating window while holding the
|
||
* floating_modifier and the right mouse button.
|
||
* Calls the drag_pointer function with the resize_window callback
|
||
*
|
||
*/
|
||
void floating_resize_window(Con *con, bool proportional,
|
||
xcb_button_press_event_t *event) {
|
||
DLOG("floating_resize_window\n");
|
||
|
||
/* corner saves the nearest corner to the original click. It contains
|
||
* a bitmask of the nearest borders (BORDER_LEFT, BORDER_RIGHT, …) */
|
||
border_t corner = 0;
|
||
|
||
if (event->event_x <= (con->rect.width / 2))
|
||
corner |= BORDER_LEFT;
|
||
else corner |= BORDER_RIGHT;
|
||
|
||
if (event->event_y <= (con->rect.height / 2))
|
||
corner |= BORDER_TOP;
|
||
else corner |= BORDER_RIGHT;
|
||
|
||
struct resize_window_callback_params params = { corner, proportional, event };
|
||
|
||
drag_pointer(con, event, XCB_NONE, BORDER_TOP /* irrelevant */, resize_window_callback, ¶ms);
|
||
}
|
||
|
||
/*
|
||
* This function grabs your pointer and lets you drag stuff around (borders).
|
||
* Every time you move your mouse, an XCB_MOTION_NOTIFY event will be received
|
||
* and the given callback will be called with the parameters specified (client,
|
||
* border on which the click originally was), the original rect of the client,
|
||
* the event and the new coordinates (x, y).
|
||
*
|
||
*/
|
||
void drag_pointer(Con *con, xcb_button_press_event_t *event, xcb_window_t
|
||
confine_to, border_t border, callback_t callback, void *extra)
|
||
{
|
||
uint32_t new_x, new_y;
|
||
Rect old_rect;
|
||
if (con != NULL)
|
||
memcpy(&old_rect, &(con->rect), sizeof(Rect));
|
||
|
||
/* Grab the pointer */
|
||
/* TODO: returncode */
|
||
xcb_grab_pointer(conn,
|
||
false, /* get all pointer events specified by the following mask */
|
||
root, /* grab the root window */
|
||
XCB_EVENT_MASK_BUTTON_RELEASE | XCB_EVENT_MASK_POINTER_MOTION, /* which events to let through */
|
||
XCB_GRAB_MODE_ASYNC, /* pointer events should continue as normal */
|
||
XCB_GRAB_MODE_ASYNC, /* keyboard mode */
|
||
confine_to, /* confine_to = in which window should the cursor stay */
|
||
XCB_NONE, /* don’t display a special cursor */
|
||
XCB_CURRENT_TIME);
|
||
|
||
/* Go into our own event loop */
|
||
xcb_flush(conn);
|
||
|
||
xcb_generic_event_t *inside_event, *last_motion_notify = NULL;
|
||
/* I’ve always wanted to have my own eventhandler… */
|
||
while ((inside_event = xcb_wait_for_event(conn))) {
|
||
/* We now handle all events we can get using xcb_poll_for_event */
|
||
do {
|
||
/* Same as get_event_handler in xcb */
|
||
int nr = inside_event->response_type;
|
||
if (nr == 0) {
|
||
/* An error occured */
|
||
//handle_event(NULL, conn, inside_event);
|
||
free(inside_event);
|
||
continue;
|
||
}
|
||
assert(nr < 256);
|
||
nr &= XCB_EVENT_RESPONSE_TYPE_MASK;
|
||
assert(nr >= 2);
|
||
|
||
switch (nr) {
|
||
case XCB_BUTTON_RELEASE:
|
||
goto done;
|
||
|
||
case XCB_MOTION_NOTIFY:
|
||
/* motion_notify events are saved for later */
|
||
FREE(last_motion_notify);
|
||
last_motion_notify = inside_event;
|
||
break;
|
||
|
||
case XCB_UNMAP_NOTIFY:
|
||
DLOG("Unmap-notify, aborting\n");
|
||
xcb_event_handle(&evenths, inside_event);
|
||
goto done;
|
||
|
||
default:
|
||
DLOG("Passing to original handler\n");
|
||
/* Use original handler */
|
||
xcb_event_handle(&evenths, inside_event);
|
||
break;
|
||
}
|
||
if (last_motion_notify != inside_event)
|
||
free(inside_event);
|
||
} while ((inside_event = xcb_poll_for_event(conn)) != NULL);
|
||
|
||
if (last_motion_notify == NULL)
|
||
continue;
|
||
|
||
new_x = ((xcb_motion_notify_event_t*)last_motion_notify)->root_x;
|
||
new_y = ((xcb_motion_notify_event_t*)last_motion_notify)->root_y;
|
||
|
||
callback(con, &old_rect, new_x, new_y, extra);
|
||
FREE(last_motion_notify);
|
||
}
|
||
done:
|
||
xcb_ungrab_pointer(conn, XCB_CURRENT_TIME);
|
||
xcb_flush(conn);
|
||
}
|
||
|
||
#if 0
|
||
/*
|
||
* Changes focus in the given direction for floating clients.
|
||
*
|
||
* Changing to the left/right means going to the previous/next floating client,
|
||
* changing to top/bottom means cycling through the Z-index.
|
||
*
|
||
*/
|
||
void floating_focus_direction(xcb_connection_t *conn, Client *currently_focused, direction_t direction) {
|
||
DLOG("floating focus\n");
|
||
|
||
if (direction == D_LEFT || direction == D_RIGHT) {
|
||
/* Go to the next/previous floating client */
|
||
Client *client;
|
||
|
||
while ((client = (direction == D_LEFT ? TAILQ_PREV(currently_focused, floating_clients_head, floating_clients) :
|
||
TAILQ_NEXT(currently_focused, floating_clients))) !=
|
||
TAILQ_END(&(currently_focused->workspace->floating_clients))) {
|
||
if (!client->floating)
|
||
continue;
|
||
set_focus(conn, client, true);
|
||
return;
|
||
}
|
||
}
|
||
}
|
||
|
||
/*
|
||
* Moves the client 10px to the specified direction.
|
||
*
|
||
*/
|
||
void floating_move(xcb_connection_t *conn, Client *currently_focused, direction_t direction) {
|
||
DLOG("floating move\n");
|
||
|
||
Rect destination = currently_focused->rect;
|
||
Rect *screen = &(currently_focused->workspace->output->rect);
|
||
|
||
switch (direction) {
|
||
case D_LEFT:
|
||
destination.x -= 10;
|
||
break;
|
||
case D_RIGHT:
|
||
destination.x += 10;
|
||
break;
|
||
case D_UP:
|
||
destination.y -= 10;
|
||
break;
|
||
case D_DOWN:
|
||
destination.y += 10;
|
||
break;
|
||
/* to make static analyzers happy */
|
||
default:
|
||
break;
|
||
}
|
||
|
||
/* Prevent windows from vanishing completely */
|
||
if ((int32_t)(destination.x + destination.width - 5) <= (int32_t)screen->x ||
|
||
(int32_t)(destination.x + 5) >= (int32_t)(screen->x + screen->width) ||
|
||
(int32_t)(destination.y + destination.height - 5) <= (int32_t)screen->y ||
|
||
(int32_t)(destination.y + 5) >= (int32_t)(screen->y + screen->height)) {
|
||
DLOG("boundary check failed, not moving\n");
|
||
return;
|
||
}
|
||
|
||
currently_focused->rect = destination;
|
||
reposition_client(conn, currently_focused);
|
||
|
||
/* Because reposition_client does not send a faked configure event (only resize does),
|
||
* we need to initiate that on our own */
|
||
fake_absolute_configure_notify(conn, currently_focused);
|
||
/* fake_absolute_configure_notify flushes */
|
||
}
|
||
|
||
/*
|
||
* Hides all floating clients (or show them if they are currently hidden) on
|
||
* the specified workspace.
|
||
*
|
||
*/
|
||
void floating_toggle_hide(xcb_connection_t *conn, Workspace *workspace) {
|
||
Client *client;
|
||
|
||
workspace->floating_hidden = !workspace->floating_hidden;
|
||
DLOG("floating_hidden is now: %d\n", workspace->floating_hidden);
|
||
TAILQ_FOREACH(client, &(workspace->floating_clients), floating_clients) {
|
||
if (workspace->floating_hidden)
|
||
client_unmap(conn, client);
|
||
else client_map(conn, client);
|
||
}
|
||
|
||
/* If we just unmapped all floating windows we should ensure that the focus
|
||
* is set correctly, that ist, to the first non-floating client in stack */
|
||
if (workspace->floating_hidden)
|
||
SLIST_FOREACH(client, &(workspace->focus_stack), focus_clients) {
|
||
if (client_is_floating(client))
|
||
continue;
|
||
set_focus(conn, client, true);
|
||
return;
|
||
}
|
||
|
||
xcb_flush(conn);
|
||
}
|
||
#endif
|