-#undef I3__FILE__
-#define I3__FILE__ "randr.c"
/*
* vim:ts=4:sw=4:expandtab
*
#include <time.h>
#include <xcb/randr.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_get_screen_resources_current_reply_t resources_reply;
-
/* Pointer to the result of the query for primary output */
xcb_randr_get_output_primary_reply_t *primary;
/* This is the output covering the root window */
static Output *root_output;
+static bool has_randr_1_5 = false;
/*
* Get a specific output by its internal X11 id. Used by randr_query_outputs
}
/*
- * Returns the output with the given name if it is active (!) or NULL.
+ * Returns the output with the given name or NULL.
+ * If require_active is true, only active outputs are considered.
*
*/
-Output *get_output_by_name(const char *name) {
+Output *get_output_by_name(const char *name, const bool require_active) {
Output *output;
- TAILQ_FOREACH(output, &outputs, outputs)
- if (output->active &&
- strcasecmp(output->name, name) == 0)
- return output;
+ bool get_primary = (strcasecmp("primary", name) == 0);
+ TAILQ_FOREACH(output, &outputs, outputs) {
+ if ((output->primary && get_primary) ||
+ ((!require_active || output->active) && strcasecmp(output->name, name) == 0)) {
+ return output;
+ }
+ }
return NULL;
}
return NULL;
}
+/*
+ * Returns the active output which spans exactly the area specified by
+ * rect or NULL if there is no output like this.
+ *
+ */
+Output *get_output_with_dimensions(Rect rect) {
+ Output *output;
+ TAILQ_FOREACH(output, &outputs, outputs) {
+ if (!output->active)
+ continue;
+ DLOG("comparing x=%d y=%d %dx%d with x=%d and y=%d %dx%d\n",
+ rect.x, rect.y, rect.width, rect.height,
+ output->rect.x, output->rect.y, output->rect.width, output->rect.height);
+ if (rect.x == output->rect.x && rect.width == output->rect.width &&
+ rect.y == output->rect.y && rect.height == output->rect.height)
+ return output;
+ }
+
+ return NULL;
+}
+
/*
* In contained_by_output, we check if any active output contains part of the container.
* We do this by checking if the output rect is intersected by the Rect.
* Creates an output covering the root window.
*
*/
-void create_root_output(xcb_connection_t *conn) {
- root_output = scalloc(1, sizeof(Output));
+Output *create_root_output(xcb_connection_t *conn) {
+ Output *s = scalloc(1, sizeof(Output));
- root_output->active = true;
- root_output->rect.x = 0;
- root_output->rect.y = 0;
- root_output->rect.width = root_screen->width_in_pixels;
- root_output->rect.height = root_screen->height_in_pixels;
- root_output->name = "xroot-0";
- output_init_con(root_output);
- init_ws_for_output(root_output, output_get_content(root_output->con));
+ s->active = false;
+ 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, root_output, outputs);
+ return s;
}
/*
/* In case the workspace we just moved was visible but there was no
* other workspace to switch to, we need to initialize the source
- * output aswell */
+ * output as well */
if (visible && previous == NULL) {
LOG("There is no workspace left on \"%s\", re-initializing\n",
workspace_out->name);
- init_ws_for_output(get_output_by_name(workspace_out->name),
+ init_ws_for_output(get_output_by_name(workspace_out->name, true),
output_get_content(workspace_out));
DLOG("Done re-initializing, continuing with \"%s\"\n", output->name);
}
}
/*
- * 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
+ * randr_query_outputs_15 uses RandR ≥ 1.5 to update outputs.
+ *
+ */
+static bool randr_query_outputs_15(void) {
+#if XCB_RANDR_MINOR_VERSION < 5
+ return false;
+#else
+ /* RandR 1.5 available at compile-time, i.e. libxcb is new enough */
+ if (!has_randr_1_5) {
+ return false;
+ }
+ /* RandR 1.5 available at run-time (supported by the server and not
+ * disabled by the user) */
+ DLOG("Querying outputs using RandR 1.5\n");
+ xcb_generic_error_t *err;
+ xcb_randr_get_monitors_reply_t *monitors =
+ xcb_randr_get_monitors_reply(
+ conn, xcb_randr_get_monitors(conn, root, true), &err);
+ if (err != NULL) {
+ ELOG("Could not get RandR monitors: X11 error code %d\n", err->error_code);
+ free(err);
+ /* Fall back to RandR ≤ 1.4 */
+ return false;
+ }
+
+ /* Mark all outputs as to_be_disabled, since xcb_randr_get_monitors() will
+ * only return active outputs. */
+ Output *output;
+ TAILQ_FOREACH(output, &outputs, outputs) {
+ if (output != root_output) {
+ output->to_be_disabled = true;
+ }
+ }
+
+ DLOG("%d RandR monitors found (timestamp %d)\n",
+ xcb_randr_get_monitors_monitors_length(monitors),
+ monitors->timestamp);
+
+ xcb_randr_monitor_info_iterator_t iter;
+ for (iter = xcb_randr_get_monitors_monitors_iterator(monitors);
+ iter.rem;
+ xcb_randr_monitor_info_next(&iter)) {
+ const xcb_randr_monitor_info_t *monitor_info = iter.data;
+ xcb_get_atom_name_reply_t *atom_reply =
+ xcb_get_atom_name_reply(
+ conn, xcb_get_atom_name(conn, monitor_info->name), &err);
+ if (err != NULL) {
+ ELOG("Could not get RandR monitor name: X11 error code %d\n", err->error_code);
+ free(err);
+ continue;
+ }
+ char *name;
+ sasprintf(&name, "%.*s",
+ xcb_get_atom_name_name_length(atom_reply),
+ xcb_get_atom_name_name(atom_reply));
+ free(atom_reply);
+
+ Output *new = get_output_by_name(name, false);
+ if (new == NULL) {
+ new = scalloc(1, sizeof(Output));
+ new->name = sstrdup(name);
+ if (monitor_info->primary) {
+ TAILQ_INSERT_HEAD(&outputs, new, outputs);
+ } else {
+ TAILQ_INSERT_TAIL(&outputs, new, outputs);
+ }
+ }
+ /* We specified get_active == true in xcb_randr_get_monitors(), so we
+ * will only receive active outputs. */
+ new->active = true;
+ new->to_be_disabled = false;
+
+ new->primary = monitor_info->primary;
+
+ new->changed =
+ update_if_necessary(&(new->rect.x), monitor_info->x) |
+ update_if_necessary(&(new->rect.y), monitor_info->y) |
+ update_if_necessary(&(new->rect.width), monitor_info->width) |
+ update_if_necessary(&(new->rect.height), monitor_info->height);
+
+ DLOG("name %s, x %d, y %d, width %d px, height %d px, width %d mm, height %d mm, primary %d, automatic %d\n",
+ name,
+ monitor_info->x, monitor_info->y, monitor_info->width, monitor_info->height,
+ monitor_info->width_in_millimeters, monitor_info->height_in_millimeters,
+ monitor_info->primary, monitor_info->automatic);
+ free(name);
+ }
+ free(monitors);
+ return true;
+#endif
+}
+
+/*
+ * Gets called by randr_query_outputs_14() 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) {
+ xcb_timestamp_t cts,
+ xcb_randr_get_screen_resources_current_reply_t *res) {
/* each CRT controller has a position in which we are interested in */
- crtc_info *crtc;
+ xcb_randr_get_crtc_info_reply_t *crtc;
Output *new = get_output_by_id(id);
bool existing = (new != NULL);
}
/*
- * (Re-)queries the outputs via RandR and stores them in the list of outputs.
- *
- * If no outputs are found use the root window.
+ * randr_query_outputs_14 uses RandR ≤ 1.4 to update outputs.
*
*/
-void randr_query_outputs(void) {
- Output *output, *other, *first;
- xcb_randr_get_output_primary_cookie_t pcookie;
- 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;
+static void randr_query_outputs_14(void) {
+ DLOG("Querying outputs using RandR ≤ 1.4\n");
/* Get screen resources (primary output, crtcs, outputs, modes) */
+ xcb_randr_get_screen_resources_current_cookie_t rcookie;
rcookie = xcb_randr_get_screen_resources_current(conn, root);
+ xcb_randr_get_output_primary_cookie_t pcookie;
pcookie = xcb_randr_get_output_primary(conn, root);
if ((primary = xcb_randr_get_output_primary_reply(conn, pcookie, NULL)) == NULL)
ELOG("Could not get RandR primary output\n");
else
DLOG("primary output is %08x\n", primary->output);
- if ((res = xcb_randr_get_screen_resources_current_reply(conn, rcookie, NULL)) == NULL)
+
+ xcb_randr_get_screen_resources_current_reply_t *res =
+ xcb_randr_get_screen_resources_current_reply(conn, rcookie, NULL);
+ if (res == NULL) {
+ ELOG("Could not query screen resources.\n");
return;
+ }
- cts = res->config_timestamp;
+ /* timestamp of the configuration so that we get consistent replies to all
+ * requests (if the configuration changes between our different calls) */
+ const xcb_timestamp_t cts = res->config_timestamp;
+
+ const int len = xcb_randr_get_screen_resources_current_outputs_length(res);
- int len = xcb_randr_get_screen_resources_current_outputs_length(res);
- randr_outputs = xcb_randr_get_screen_resources_current_outputs(res);
+ /* an output is VGA-1, LVDS-1, etc. (usually physical video outputs) */
+ xcb_randr_output_t *randr_outputs = xcb_randr_get_screen_resources_current_outputs(res);
/* Request information for each output */
xcb_randr_get_output_info_cookie_t ocookie[len];
free(output);
}
+ FREE(res);
+}
+
+/*
+ * (Re-)queries the outputs via RandR and stores them in the list of outputs.
+ *
+ * If no outputs are found use the root window.
+ *
+ */
+void randr_query_outputs(void) {
+ Output *output, *other;
+
+ if (!randr_query_outputs_15()) {
+ randr_query_outputs_14();
+ }
+
/* If there's no randr output, enable the output covering the root window. */
if (any_randr_output_active()) {
DLOG("Active RandR output found. Disabling root output.\n");
* 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);
-
- first = get_first_output();
-
- /* TODO: refactor the following code into a nice function. maybe
- * use an on_destroy callback which is implement differently for
- * different container types (CT_CONTENT vs. CT_DOCKAREA)? */
- Con *first_content = output_get_content(first->con);
-
- if (output->con != NULL) {
- /* We need to move the workspaces from the disappearing output to the first output */
- /* 1: Get the con to focus next, if the disappearing ws is focused */
- Con *next = NULL;
- if (TAILQ_FIRST(&(croot->focus_head)) == output->con) {
- DLOG("This output (%p) was focused! Getting next\n", output->con);
- next = focused;
- DLOG("next = %p\n", next);
- }
-
- /* 2: iterate through workspaces and re-assign them, fixing the coordinates
- * of floating containers as we go */
- Con *current;
- Con *old_content = output_get_content(output->con);
- while (!TAILQ_EMPTY(&(old_content->nodes_head))) {
- current = TAILQ_FIRST(&(old_content->nodes_head));
- if (current != next && TAILQ_EMPTY(&(current->focus_head))) {
- /* the workspace is empty and not focused, get rid of it */
- DLOG("Getting rid of current = %p / %s (empty, unfocused)\n", current, current->name);
- tree_close(current, DONT_KILL_WINDOW, false, false);
- continue;
- }
- DLOG("Detaching current = %p / %s\n", current, current->name);
- con_detach(current);
- DLOG("Re-attaching current = %p / %s\n", current, current->name);
- con_attach(current, first_content, false);
- DLOG("Fixing the coordinates of floating containers\n");
- Con *floating_con;
- TAILQ_FOREACH(floating_con, &(current->floating_head), floating_windows)
- floating_fix_coordinates(floating_con, &(output->con->rect), &(first->con->rect));
- DLOG("Done, next\n");
- }
- DLOG("re-attached all workspaces\n");
-
- if (next) {
- DLOG("now focusing next = %p\n", next);
- con_focus(next);
- workspace_show(con_get_workspace(next));
- }
-
- /* 3: move the dock clients to the first output */
- Con *child;
- TAILQ_FOREACH(child, &(output->con->nodes_head), nodes) {
- if (child->type != CT_DOCKAREA)
- continue;
- DLOG("Handling dock con %p\n", child);
- Con *dock;
- while (!TAILQ_EMPTY(&(child->nodes_head))) {
- dock = TAILQ_FIRST(&(child->nodes_head));
- Con *nc;
- Match *match;
- nc = con_for_window(first->con, dock->window, &match);
- DLOG("Moving dock client %p to nc %p\n", dock, nc);
- con_detach(dock);
- DLOG("Re-attaching\n");
- con_attach(dock, nc, false);
- DLOG("Done\n");
- }
- }
-
- DLOG("destroying disappearing con %p\n", output->con);
- tree_close(output->con, DONT_KILL_WINDOW, true, false);
- DLOG("Done. Should be fine now\n");
- output->con = NULL;
- }
-
- output->to_be_disabled = false;
- output->changed = false;
+ randr_disable_output(output);
}
if (output->changed) {
/* render_layout flushes */
tree_render();
- FREE(res);
FREE(primary);
}
+/*
+ * Disables the output and moves its content.
+ *
+ */
+void randr_disable_output(Output *output) {
+ assert(output->to_be_disabled);
+
+ output->active = false;
+ DLOG("Output %s disabled, re-assigning workspaces/docks\n", output->name);
+
+ Output *first = get_first_output();
+
+ /* TODO: refactor the following code into a nice function. maybe
+ * use an on_destroy callback which is implement differently for
+ * different container types (CT_CONTENT vs. CT_DOCKAREA)? */
+ Con *first_content = output_get_content(first->con);
+
+ if (output->con != NULL) {
+ /* We need to move the workspaces from the disappearing output to the first output */
+ /* 1: Get the con to focus next, if the disappearing ws is focused */
+ Con *next = NULL;
+ if (TAILQ_FIRST(&(croot->focus_head)) == output->con) {
+ DLOG("This output (%p) was focused! Getting next\n", output->con);
+ next = focused;
+ DLOG("next = %p\n", next);
+ }
+
+ /* 2: iterate through workspaces and re-assign them, fixing the coordinates
+ * of floating containers as we go */
+ Con *current;
+ Con *old_content = output_get_content(output->con);
+ while (!TAILQ_EMPTY(&(old_content->nodes_head))) {
+ current = TAILQ_FIRST(&(old_content->nodes_head));
+ if (current != next && TAILQ_EMPTY(&(current->focus_head))) {
+ /* the workspace is empty and not focused, get rid of it */
+ DLOG("Getting rid of current = %p / %s (empty, unfocused)\n", current, current->name);
+ tree_close_internal(current, DONT_KILL_WINDOW, false, false);
+ continue;
+ }
+ DLOG("Detaching current = %p / %s\n", current, current->name);
+ con_detach(current);
+ DLOG("Re-attaching current = %p / %s\n", current, current->name);
+ con_attach(current, first_content, false);
+ DLOG("Fixing the coordinates of floating containers\n");
+ Con *floating_con;
+ TAILQ_FOREACH(floating_con, &(current->floating_head), floating_windows) {
+ floating_fix_coordinates(floating_con, &(output->con->rect), &(first->con->rect));
+ }
+ DLOG("Done, next\n");
+ }
+ DLOG("re-attached all workspaces\n");
+
+ if (next) {
+ DLOG("now focusing next = %p\n", next);
+ con_focus(next);
+ workspace_show(con_get_workspace(next));
+ }
+
+ /* 3: move the dock clients to the first output */
+ Con *child;
+ TAILQ_FOREACH(child, &(output->con->nodes_head), nodes) {
+ if (child->type != CT_DOCKAREA)
+ continue;
+ DLOG("Handling dock con %p\n", child);
+ Con *dock;
+ while (!TAILQ_EMPTY(&(child->nodes_head))) {
+ dock = TAILQ_FIRST(&(child->nodes_head));
+ Con *nc;
+ Match *match;
+ nc = con_for_window(first->con, dock->window, &match);
+ DLOG("Moving dock client %p to nc %p\n", dock, nc);
+ con_detach(dock);
+ DLOG("Re-attaching\n");
+ con_attach(dock, nc, false);
+ DLOG("Done\n");
+ }
+ }
+
+ DLOG("destroying disappearing con %p\n", output->con);
+ Con *con = output->con;
+ /* clear the pointer before calling tree_close_internal in which the memory is freed */
+ output->con = NULL;
+ tree_close_internal(con, DONT_KILL_WINDOW, true, false);
+ DLOG("Done. Should be fine now\n");
+ }
+
+ output->to_be_disabled = false;
+ output->changed = false;
+}
+
+static void fallback_to_root_output(void) {
+ root_output->active = true;
+ output_init_con(root_output);
+ init_ws_for_output(root_output, output_get_content(root_output->con));
+}
+
/*
* We have just established a connection to the X server and need the initial
* XRandR information to setup workspaces for each screen.
*
*/
-void randr_init(int *event_base) {
+void randr_init(int *event_base, const bool disable_randr15) {
const xcb_query_extension_reply_t *extreply;
- create_root_output(conn);
+ root_output = create_root_output(conn);
+ TAILQ_INSERT_TAIL(&outputs, root_output, outputs);
extreply = xcb_get_extension_data(conn, &xcb_randr_id);
- if (!extreply->present)
+ if (!extreply->present) {
+ DLOG("RandR is not present, activating root output.\n");
+ fallback_to_root_output();
+ return;
+ }
+
+ xcb_generic_error_t *err;
+ xcb_randr_query_version_reply_t *randr_version =
+ xcb_randr_query_version_reply(
+ conn, xcb_randr_query_version(conn, XCB_RANDR_MAJOR_VERSION, XCB_RANDR_MINOR_VERSION), &err);
+ if (err != NULL) {
+ free(err);
+ ELOG("Could not query RandR version: X11 error code %d\n", err->error_code);
+ fallback_to_root_output();
return;
+ }
+
+ has_randr_1_5 = (randr_version->major_version >= 1) &&
+ (randr_version->minor_version >= 5) &&
+ !disable_randr15;
+
+ free(randr_version);
randr_query_outputs();