]> git.sur5r.net Git - i3/i3/blobdiff - src/randr.c
Properly close disabled outputs restored during a restart. (#2337)
[i3/i3] / src / randr.c
index 96f2f23368d7423415ff0904bfaa52dd8d5607b9..512e0d2833f9c5bb8d6ba326e9469a91b598a3da 100644 (file)
@@ -27,7 +27,8 @@ xcb_randr_get_output_primary_reply_t *primary;
 /* Stores all outputs available in your current session. */
 struct outputs_head outputs = TAILQ_HEAD_INITIALIZER(outputs);
 
-static bool randr_disabled = false;
+/* This is the output covering the root window */
+static Output *root_output;
 
 /*
  * Get a specific output by its internal X11 id. Used by randr_query_outputs
@@ -69,7 +70,22 @@ Output *get_first_output(void) {
     if (output->active)
         return output;
 
-    return NULL;
+    die("No usable outputs available.\n");
+}
+
+/*
+ * Check whether there are any active outputs (excluding the root output).
+ *
+ */
+static bool any_randr_output_active(void) {
+    Output *output;
+
+    TAILQ_FOREACH(output, &outputs, outputs) {
+        if (output != root_output && !output->to_be_disabled && output->active)
+            return true;
+    }
+
+    return false;
 }
 
 /*
@@ -92,6 +108,27 @@ Output *get_output_containing(unsigned int x, unsigned int y) {
     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.
@@ -220,27 +257,20 @@ Output *get_output_next(direction_t direction, Output *current, output_close_far
 }
 
 /*
- * Disables RandR support by creating exactly one output with the size of the
- * X11 screen.
+ * Creates an output covering the root window.
  *
  */
-void disable_randr(xcb_connection_t *conn) {
-    DLOG("RandR extension unusable, disabling.\n");
-
+Output *create_root_output(xcb_connection_t *conn) {
     Output *s = scalloc(1, sizeof(Output));
 
-    s->active = true;
+    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";
-    output_init_con(s);
-    init_ws_for_output(s, output_get_content(s->con));
 
-    TAILQ_INSERT_TAIL(&outputs, s, outputs);
-
-    randr_disabled = true;
+    return s;
 }
 
 /*
@@ -411,7 +441,7 @@ void init_ws_for_output(Output *output, Con *content) {
 
         /* 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);
@@ -555,12 +585,6 @@ static void handle_output(xcb_connection_t *conn, xcb_randr_output_t id,
         return;
     }
 
-    if (output->connection == XCB_RANDR_CONNECTION_DISCONNECTED) {
-        DLOG("Disabling output %s: it is disconnected\n", new->name);
-        new->to_be_disabled = true;
-        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) |
@@ -570,8 +594,6 @@ static void handle_output(xcb_connection_t *conn, xcb_randr_output_t id,
     if (!new->active) {
         DLOG("width/height 0/0, disabling output\n");
         return;
-    } else {
-        new->to_be_disabled = false;
     }
 
     DLOG("mode: %dx%d+%d+%d\n", new->rect.width, new->rect.height,
@@ -593,11 +615,16 @@ static void handle_output(xcb_connection_t *conn, xcb_randr_output_t id,
     new->changed = true;
 }
 
-static bool __randr_query_outputs(void) {
-    Output *output, *other, *first;
+/*
+ * (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;
     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) */
@@ -606,9 +633,6 @@ static bool __randr_query_outputs(void) {
     /* an output is VGA-1, LVDS-1, etc. (usually physical video outputs) */
     xcb_randr_output_t *randr_outputs;
 
-    if (randr_disabled)
-        return true;
-
     /* Get screen resources (primary output, crtcs, outputs, modes) */
     rcookie = xcb_randr_get_screen_resources_current(conn, root);
     pcookie = xcb_randr_get_output_primary(conn, root);
@@ -617,29 +641,41 @@ static bool __randr_query_outputs(void) {
         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) {
-        disable_randr(conn);
-        return true;
-    }
-    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);
+    resources_reply *res = xcb_randr_get_screen_resources_current_reply(conn, rcookie, NULL);
+    if (res == NULL) {
+        ELOG("Could not query screen resources.\n");
+    } else {
+        cts = res->config_timestamp;
 
-    /* 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);
+        int len = xcb_randr_get_screen_resources_current_outputs_length(res);
+        randr_outputs = xcb_randr_get_screen_resources_current_outputs(res);
 
-    /* Loop through all outputs available for this X11 screen */
-    for (int i = 0; i < len; i++) {
-        xcb_randr_get_output_info_reply_t *output;
+        /* 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);
 
-        if ((output = xcb_randr_get_output_info_reply(conn, ocookie[i], NULL)) == NULL)
-            continue;
+        /* 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);
+            handle_output(conn, randr_outputs[i], output, cts, res);
+            free(output);
+        }
+    }
+
+    /* 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");
+        if (root_output->active)
+            root_output->to_be_disabled = true;
+    } else {
+        DLOG("No active RandR output found. Enabling root output.\n");
+        root_output->active = true;
     }
 
     /* Check for clones, disable the clones and reduce the mode to the
@@ -697,89 +733,7 @@ static bool __randr_query_outputs(void) {
      * 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();
-            if (!first) {
-                FREE(res);
-                FREE(primary);
-                return false;
-            }
-
-            /* 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) {
@@ -788,14 +742,6 @@ static bool __randr_query_outputs(void) {
         }
     }
 
-    if (TAILQ_EMPTY(&outputs)) {
-        ELOG("No outputs found via RandR, disabling\n");
-        disable_randr(conn);
-    }
-
-    /* Verifies that there is at least one active output as a side-effect. */
-    get_first_output();
-
     /* Just go through each active output and assign one workspace */
     TAILQ_FOREACH(output, &outputs, outputs) {
         if (!output->active)
@@ -821,32 +767,94 @@ static bool __randr_query_outputs(void) {
 
     FREE(res);
     FREE(primary);
-
-    return true;
 }
 
 /*
- * (Re-)queries the outputs via RandR and stores them in the list of outputs.
+ * Disables the output and moves its content.
  *
  */
-void randr_query_outputs(void) {
-    static bool first_query = true;
+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);
+        }
 
-    if (first_query) {
-        /* find monitors at least once via RandR */
-        if (!__randr_query_outputs())
-            die("No usable outputs available.\n");
-        first_query = false;
-    } else {
-        /* requery */
-        if (!__randr_query_outputs()) {
-            DLOG("sleep %f ms due to zero displays\n", config.zero_disp_exit_timer_ms);
-            usleep(config.zero_disp_exit_timer_ms * 1000);
+        /* 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));
+        }
 
-            if (!__randr_query_outputs())
-                die("No usable outputs available.\n");
+        /* 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_internal(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;
 }
 
 /*
@@ -857,12 +865,20 @@ void randr_query_outputs(void) {
 void randr_init(int *event_base) {
     const xcb_query_extension_reply_t *extreply;
 
+    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) {
-        disable_randr(conn);
+        DLOG("RandR is not present, activating root output.\n");
+        root_output->active = true;
+        output_init_con(root_output);
+        init_ws_for_output(root_output, output_get_content(root_output->con));
+
         return;
-    } else
-        randr_query_outputs();
+    }
+
+    randr_query_outputs();
 
     if (event_base != NULL)
         *event_base = extreply->first_event;