541 lines
20 KiB
C
541 lines
20 KiB
C
/*
|
||
* vim:ts=8:expandtab
|
||
*
|
||
* i3 - an improved dynamic tiling window manager
|
||
*
|
||
* © 2009-2010 Michael Stapelberg and contributors
|
||
*
|
||
* See file LICENSE for license information.
|
||
*
|
||
* For more information on RandR, please see the X.org RandR specification at
|
||
* http://cgit.freedesktop.org/xorg/proto/randrproto/tree/randrproto.txt
|
||
* (take your time to read it completely, it answers all questions).
|
||
*
|
||
*/
|
||
#include <stdio.h>
|
||
#include <stdlib.h>
|
||
#include <string.h>
|
||
#include <stdbool.h>
|
||
#include <assert.h>
|
||
#include <time.h>
|
||
#include <unistd.h>
|
||
|
||
#include <xcb/xcb.h>
|
||
#include <xcb/randr.h>
|
||
|
||
#include "queue.h"
|
||
#include "i3.h"
|
||
#include "data.h"
|
||
#include "table.h"
|
||
#include "util.h"
|
||
#include "layout.h"
|
||
#include "xcb.h"
|
||
#include "config.h"
|
||
#include "workspace.h"
|
||
#include "log.h"
|
||
#include "ewmh.h"
|
||
#include "ipc.h"
|
||
#include "client.h"
|
||
|
||
/* While a clean namespace is usually a pretty good thing, we really need
|
||
* to use shorter names than the whole xcb_randr_* default names. */
|
||
typedef xcb_randr_get_crtc_info_reply_t crtc_info;
|
||
typedef xcb_randr_mode_info_t mode_info;
|
||
typedef xcb_randr_get_screen_resources_current_reply_t resources_reply;
|
||
|
||
/* Stores all outputs available in your current session. */
|
||
struct outputs_head outputs = TAILQ_HEAD_INITIALIZER(outputs);
|
||
|
||
static bool randr_disabled = false;
|
||
|
||
/*
|
||
* Get a specific output by its internal X11 id. Used by randr_query_outputs
|
||
* to check if the output is new (only in the first scan) or if we are
|
||
* re-scanning.
|
||
*
|
||
*/
|
||
static Output *get_output_by_id(xcb_randr_output_t id) {
|
||
Output *output;
|
||
TAILQ_FOREACH(output, &outputs, outputs)
|
||
if (output->id == id)
|
||
return output;
|
||
|
||
return NULL;
|
||
}
|
||
|
||
/*
|
||
* Returns the output with the given name if it is active (!) or NULL.
|
||
*
|
||
*/
|
||
Output *get_output_by_name(const char *name) {
|
||
Output *output;
|
||
TAILQ_FOREACH(output, &outputs, outputs)
|
||
if (output->active &&
|
||
strcasecmp(output->name, name) == 0)
|
||
return output;
|
||
|
||
return NULL;
|
||
}
|
||
|
||
/*
|
||
* Returns the first output which is active.
|
||
*
|
||
*/
|
||
Output *get_first_output() {
|
||
Output *output;
|
||
|
||
TAILQ_FOREACH(output, &outputs, outputs)
|
||
if (output->active)
|
||
return output;
|
||
|
||
return NULL;
|
||
}
|
||
|
||
/*
|
||
* Returns the active (!) output which contains the coordinates x, y or NULL
|
||
* if there is no output which contains these coordinates.
|
||
*
|
||
*/
|
||
Output *get_output_containing(int x, int y) {
|
||
Output *output;
|
||
TAILQ_FOREACH(output, &outputs, outputs) {
|
||
if (!output->active)
|
||
continue;
|
||
DLOG("comparing x=%d y=%d with x=%d and y=%d width %d height %d\n",
|
||
x, y, output->rect.x, output->rect.y, output->rect.width, output->rect.height);
|
||
if (x >= output->rect.x && x < (output->rect.x + output->rect.width) &&
|
||
y >= output->rect.y && y < (output->rect.y + output->rect.height))
|
||
return output;
|
||
}
|
||
|
||
return NULL;
|
||
}
|
||
|
||
/*
|
||
* Gets the output which is the last one in the given direction, for example
|
||
* the output on the most bottom when direction == D_DOWN, the output most
|
||
* right when direction == D_RIGHT and so on.
|
||
*
|
||
* This function always returns a output.
|
||
*
|
||
*/
|
||
Output *get_output_most(direction_t direction, Output *current) {
|
||
Output *output, *candidate = NULL;
|
||
int position = 0;
|
||
TAILQ_FOREACH(output, &outputs, outputs) {
|
||
if (!output->active)
|
||
continue;
|
||
|
||
/* Repeated calls of WIN determine the winner of the comparison */
|
||
#define WIN(variable, condition) \
|
||
if (variable condition) { \
|
||
candidate = output; \
|
||
position = variable; \
|
||
} \
|
||
break;
|
||
|
||
if (((direction == D_UP) || (direction == D_DOWN)) &&
|
||
(current->rect.x != output->rect.x))
|
||
continue;
|
||
|
||
if (((direction == D_LEFT) || (direction == D_RIGHT)) &&
|
||
(current->rect.y != output->rect.y))
|
||
continue;
|
||
|
||
switch (direction) {
|
||
case D_UP:
|
||
WIN(output->rect.y, <= position);
|
||
case D_DOWN:
|
||
WIN(output->rect.y, >= position);
|
||
case D_LEFT:
|
||
WIN(output->rect.x, <= position);
|
||
case D_RIGHT:
|
||
WIN(output->rect.x, >= position);
|
||
}
|
||
}
|
||
|
||
assert(candidate != NULL);
|
||
|
||
return candidate;
|
||
}
|
||
|
||
/*
|
||
* Initializes the specified output, assigning the specified workspace to it.
|
||
*
|
||
*/
|
||
void initialize_output(xcb_connection_t *conn, Output *output, Workspace *workspace) {
|
||
i3Font *font = load_font(conn, config.font);
|
||
|
||
workspace->output = output;
|
||
output->current_workspace = workspace;
|
||
|
||
/* Copy rect for the workspace */
|
||
memcpy(&(workspace->rect), &(output->rect), sizeof(Rect));
|
||
|
||
/* Map clients on the workspace, if any */
|
||
workspace_map_clients(conn, workspace);
|
||
|
||
/* Create a bar window on each output */
|
||
if (!config.disable_workspace_bar) {
|
||
Rect bar_rect = {output->rect.x,
|
||
output->rect.y + output->rect.height - (font->height + 6),
|
||
output->rect.x + output->rect.width,
|
||
font->height + 6};
|
||
uint32_t mask = XCB_CW_OVERRIDE_REDIRECT | XCB_CW_EVENT_MASK;
|
||
uint32_t values[] = {1, XCB_EVENT_MASK_EXPOSURE | XCB_EVENT_MASK_BUTTON_PRESS};
|
||
output->bar = create_window(conn, bar_rect, XCB_WINDOW_CLASS_INPUT_OUTPUT, XCB_CURSOR_LEFT_PTR, true, mask, values);
|
||
output->bargc = xcb_generate_id(conn);
|
||
xcb_create_gc(conn, output->bargc, output->bar, 0, 0);
|
||
}
|
||
|
||
SLIST_INIT(&(output->dock_clients));
|
||
|
||
ipc_send_event("workspace", I3_IPC_EVENT_WORKSPACE, "{\"change\":\"init\"}");
|
||
DLOG("initialized output at (%d, %d) with %d x %d\n",
|
||
output->rect.x, output->rect.y, output->rect.width, output->rect.height);
|
||
|
||
DLOG("assigning configured workspaces to this output...\n");
|
||
Workspace *ws;
|
||
TAILQ_FOREACH(ws, workspaces, workspaces) {
|
||
if (ws == workspace)
|
||
continue;
|
||
if (ws->preferred_output == NULL ||
|
||
get_output_by_name(ws->preferred_output) != output)
|
||
continue;
|
||
|
||
DLOG("assigning ws %d\n", ws->num + 1);
|
||
workspace_assign_to(ws, output, true);
|
||
}
|
||
}
|
||
|
||
/*
|
||
* Disables RandR support by creating exactly one output with the size of the
|
||
* X11 screen.
|
||
*
|
||
*/
|
||
void disable_randr(xcb_connection_t *conn) {
|
||
xcb_screen_t *root_screen = xcb_setup_roots_iterator(xcb_get_setup(conn)).data;
|
||
|
||
DLOG("RandR extension unusable, disabling.\n");
|
||
|
||
Output *s = scalloc(sizeof(Output));
|
||
|
||
s->active = true;
|
||
s->rect.x = 0;
|
||
s->rect.y = 0;
|
||
s->rect.width = root_screen->width_in_pixels;
|
||
s->rect.height = root_screen->height_in_pixels;
|
||
s->name = "xroot-0";
|
||
|
||
TAILQ_INSERT_TAIL(&outputs, s, outputs);
|
||
|
||
randr_disabled = true;
|
||
}
|
||
|
||
/*
|
||
* This function needs to be called when changing the mode of an output when
|
||
* it already has some workspaces (or a bar window) assigned.
|
||
*
|
||
* It reconfigures the bar window for the new mode, copies the new rect into
|
||
* each workspace on this output and forces all windows on the affected
|
||
* workspaces to be reconfigured.
|
||
*
|
||
* It is necessary to call render_layout() afterwards.
|
||
*
|
||
*/
|
||
static void output_change_mode(xcb_connection_t *conn, Output *output) {
|
||
i3Font *font = load_font(conn, config.font);
|
||
Workspace *ws;
|
||
Client *client;
|
||
|
||
DLOG("Output mode changed, reconfiguring bar, updating workspaces\n");
|
||
Rect bar_rect = {output->rect.x,
|
||
output->rect.y + output->rect.height - (font->height + 6),
|
||
output->rect.x + output->rect.width,
|
||
font->height + 6};
|
||
|
||
xcb_set_window_rect(conn, output->bar, bar_rect);
|
||
|
||
/* go through all workspaces and set force_reconfigure */
|
||
TAILQ_FOREACH(ws, workspaces, workspaces) {
|
||
if (ws->output != output)
|
||
continue;
|
||
|
||
SLIST_FOREACH(client, &(ws->focus_stack), focus_clients) {
|
||
client->force_reconfigure = true;
|
||
if (!client_is_floating(client))
|
||
continue;
|
||
/* For floating clients we need to translate the
|
||
* coordinates (old workspace to new workspace) */
|
||
DLOG("old: (%x, %x)\n", client->rect.x, client->rect.y);
|
||
client->rect.x -= ws->rect.x;
|
||
client->rect.y -= ws->rect.y;
|
||
client->rect.x += ws->output->rect.x;
|
||
client->rect.y += ws->output->rect.y;
|
||
DLOG("new: (%x, %x)\n", client->rect.x, client->rect.y);
|
||
}
|
||
|
||
/* Update dimensions from output */
|
||
memcpy(&(ws->rect), &(ws->output->rect), sizeof(Rect));
|
||
|
||
/* Update the dimensions of a fullscreen client, if any */
|
||
if (ws->fullscreen_client != NULL) {
|
||
DLOG("Updating fullscreen client size\n");
|
||
client = ws->fullscreen_client;
|
||
Rect r = ws->rect;
|
||
xcb_set_window_rect(conn, client->frame, r);
|
||
|
||
r.x = 0;
|
||
r.y = 0;
|
||
xcb_set_window_rect(conn, client->child, r);
|
||
}
|
||
}
|
||
}
|
||
|
||
/*
|
||
* Gets called by randr_query_outputs() for each output. The function adds new
|
||
* outputs to the list of outputs, checks if the mode of existing outputs has
|
||
* been changed or if an existing output has been disabled. It will then change
|
||
* either the "changed" or the "to_be_deleted" flag of the output, if
|
||
* appropriate.
|
||
*
|
||
*/
|
||
static void handle_output(xcb_connection_t *conn, xcb_randr_output_t id,
|
||
xcb_randr_get_output_info_reply_t *output,
|
||
xcb_timestamp_t cts, resources_reply *res) {
|
||
/* each CRT controller has a position in which we are interested in */
|
||
crtc_info *crtc;
|
||
|
||
Output *new = get_output_by_id(id);
|
||
bool existing = (new != NULL);
|
||
if (!existing)
|
||
new = scalloc(sizeof(Output));
|
||
new->id = id;
|
||
FREE(new->name);
|
||
asprintf(&new->name, "%.*s",
|
||
xcb_randr_get_output_info_name_length(output),
|
||
xcb_randr_get_output_info_name(output));
|
||
|
||
DLOG("found output with name %s\n", new->name);
|
||
|
||
/* Even if no CRTC is used at the moment, we store the output so that
|
||
* we do not need to change the list ever again (we only update the
|
||
* position/size) */
|
||
if (output->crtc == XCB_NONE) {
|
||
if (!existing)
|
||
TAILQ_INSERT_TAIL(&outputs, new, outputs);
|
||
else if (new->active)
|
||
new->to_be_disabled = true;
|
||
return;
|
||
}
|
||
|
||
xcb_randr_get_crtc_info_cookie_t icookie;
|
||
icookie = xcb_randr_get_crtc_info(conn, output->crtc, cts);
|
||
if ((crtc = xcb_randr_get_crtc_info_reply(conn, icookie, NULL)) == NULL) {
|
||
DLOG("Skipping output %s: could not get CRTC (%p)\n",
|
||
new->name, crtc);
|
||
free(new);
|
||
return;
|
||
}
|
||
|
||
bool updated = update_if_necessary(&(new->rect.x), crtc->x) |
|
||
update_if_necessary(&(new->rect.y), crtc->y) |
|
||
update_if_necessary(&(new->rect.width), crtc->width) |
|
||
update_if_necessary(&(new->rect.height), crtc->height);
|
||
free(crtc);
|
||
new->active = (new->rect.width != 0 && new->rect.height != 0);
|
||
if (!new->active) {
|
||
DLOG("width/height 0/0, disabling output\n");
|
||
return;
|
||
}
|
||
|
||
DLOG("mode: %dx%d+%d+%d\n", new->rect.width, new->rect.height,
|
||
new->rect.x, new->rect.y);
|
||
|
||
/* If we don’t need to change an existing output or if the output
|
||
* does not exist in the first place, the case is simple: we either
|
||
* need to insert the new output or we are done. */
|
||
if (!updated || !existing) {
|
||
if (!existing)
|
||
TAILQ_INSERT_TAIL(&outputs, new, outputs);
|
||
return;
|
||
}
|
||
|
||
new->changed = true;
|
||
}
|
||
|
||
static void init_workspaces() {
|
||
Output *output;
|
||
Workspace *ws;
|
||
|
||
/* Just go through each active output and associate one workspace */
|
||
TAILQ_FOREACH(output, &outputs, outputs) {
|
||
if (!output->active || output->current_workspace != NULL)
|
||
continue;
|
||
ws = get_first_workspace_for_output(output);
|
||
initialize_output(global_conn, output, ws);
|
||
}
|
||
|
||
/* render_layout flushes */
|
||
render_layout(global_conn);
|
||
}
|
||
|
||
/*
|
||
* (Re-)queries the outputs via RandR and stores them in the list of outputs.
|
||
*
|
||
*/
|
||
void randr_query_outputs(xcb_connection_t *conn) {
|
||
Workspace *ws;
|
||
Output *output, *other, *first;
|
||
xcb_randr_get_screen_resources_current_cookie_t rcookie;
|
||
resources_reply *res;
|
||
/* timestamp of the configuration so that we get consistent replies to all
|
||
* requests (if the configuration changes between our different calls) */
|
||
xcb_timestamp_t cts;
|
||
|
||
/* an output is VGA-1, LVDS-1, etc. (usually physical video outputs) */
|
||
xcb_randr_output_t *randr_outputs;
|
||
|
||
if (randr_disabled)
|
||
return;
|
||
|
||
/* Get screen resources (crtcs, outputs, modes) */
|
||
rcookie = xcb_randr_get_screen_resources_current(conn, root);
|
||
if ((res = xcb_randr_get_screen_resources_current_reply(conn, rcookie, NULL)) == NULL) {
|
||
disable_randr(conn);
|
||
init_workspaces();
|
||
return;
|
||
}
|
||
cts = res->config_timestamp;
|
||
|
||
int len = xcb_randr_get_screen_resources_current_outputs_length(res);
|
||
randr_outputs = xcb_randr_get_screen_resources_current_outputs(res);
|
||
|
||
/* Request information for each output */
|
||
xcb_randr_get_output_info_cookie_t ocookie[len];
|
||
for (int i = 0; i < len; i++)
|
||
ocookie[i] = xcb_randr_get_output_info(conn, randr_outputs[i], cts);
|
||
|
||
/* Loop through all outputs available for this X11 screen */
|
||
for (int i = 0; i < len; i++) {
|
||
xcb_randr_get_output_info_reply_t *output;
|
||
|
||
if ((output = xcb_randr_get_output_info_reply(conn, ocookie[i], NULL)) == NULL)
|
||
continue;
|
||
|
||
handle_output(conn, randr_outputs[i], output, cts, res);
|
||
free(output);
|
||
}
|
||
|
||
free(res);
|
||
/* Check for clones, disable the clones and reduce the mode to the
|
||
* lowest common mode */
|
||
TAILQ_FOREACH(output, &outputs, outputs) {
|
||
if (!output->active || output->to_be_disabled)
|
||
continue;
|
||
DLOG("output %p, position (%d, %d), checking for clones\n",
|
||
output, output->rect.x, output->rect.y);
|
||
|
||
for (other = output;
|
||
other != TAILQ_END(&outputs);
|
||
other = TAILQ_NEXT(other, outputs)) {
|
||
if (other == output || !other->active || other->to_be_disabled)
|
||
continue;
|
||
|
||
if (other->rect.x != output->rect.x ||
|
||
other->rect.y != output->rect.y)
|
||
continue;
|
||
|
||
DLOG("output %p has the same position, his mode = %d x %d\n",
|
||
other, other->rect.width, other->rect.height);
|
||
uint32_t width = min(other->rect.width, output->rect.width);
|
||
uint32_t height = min(other->rect.height, output->rect.height);
|
||
|
||
if (update_if_necessary(&(output->rect.width), width) |
|
||
update_if_necessary(&(output->rect.height), height))
|
||
output->changed = true;
|
||
|
||
update_if_necessary(&(other->rect.width), width);
|
||
update_if_necessary(&(other->rect.height), height);
|
||
|
||
DLOG("disabling output %p (%s)\n", other, other->name);
|
||
other->to_be_disabled = true;
|
||
|
||
DLOG("new output mode %d x %d, other mode %d x %d\n",
|
||
output->rect.width, output->rect.height,
|
||
other->rect.width, other->rect.height);
|
||
}
|
||
}
|
||
|
||
/* Handle outputs which have a new mode or are disabled now (either
|
||
* because the user disabled them or because they are clones) */
|
||
TAILQ_FOREACH(output, &outputs, outputs) {
|
||
if (output->to_be_disabled) {
|
||
output->active = false;
|
||
DLOG("Output %s disabled, re-assigning workspaces/docks\n", output->name);
|
||
|
||
if ((first = get_first_output()) == NULL)
|
||
die("No usable outputs available\n");
|
||
|
||
bool needs_init = (first->current_workspace == NULL);
|
||
|
||
TAILQ_FOREACH(ws, workspaces, workspaces) {
|
||
if (ws->output != output)
|
||
continue;
|
||
|
||
workspace_assign_to(ws, first, true);
|
||
if (!needs_init)
|
||
continue;
|
||
initialize_output(conn, first, ws);
|
||
needs_init = false;
|
||
}
|
||
|
||
Client *dock;
|
||
while (!SLIST_EMPTY(&(output->dock_clients))) {
|
||
dock = SLIST_FIRST(&(output->dock_clients));
|
||
SLIST_REMOVE_HEAD(&(output->dock_clients), dock_clients);
|
||
SLIST_INSERT_HEAD(&(first->dock_clients), dock, dock_clients);
|
||
}
|
||
output->current_workspace = NULL;
|
||
output->to_be_disabled = false;
|
||
} else if (output->changed) {
|
||
output_change_mode(conn, output);
|
||
output->changed = false;
|
||
}
|
||
}
|
||
|
||
if (TAILQ_EMPTY(&outputs)) {
|
||
ELOG("No outputs found via RandR, disabling\n");
|
||
disable_randr(conn);
|
||
}
|
||
|
||
ewmh_update_workarea();
|
||
|
||
init_workspaces();
|
||
}
|
||
|
||
/*
|
||
* We have just established a connection to the X server and need the initial
|
||
* XRandR information to setup workspaces for each screen.
|
||
*
|
||
*/
|
||
void initialize_randr(xcb_connection_t *conn, int *event_base) {
|
||
const xcb_query_extension_reply_t *extreply;
|
||
|
||
extreply = xcb_get_extension_data(conn, &xcb_randr_id);
|
||
if (!extreply->present)
|
||
disable_randr(conn);
|
||
else randr_query_outputs(conn);
|
||
|
||
if (event_base != NULL)
|
||
*event_base = extreply->first_event;
|
||
|
||
xcb_randr_select_input(conn, root,
|
||
XCB_RANDR_NOTIFY_MASK_SCREEN_CHANGE |
|
||
XCB_RANDR_NOTIFY_MASK_OUTPUT_CHANGE |
|
||
XCB_RANDR_NOTIFY_MASK_CRTC_CHANGE |
|
||
XCB_RANDR_NOTIFY_MASK_OUTPUT_PROPERTY);
|
||
|
||
xcb_flush(conn);
|
||
}
|