]> git.sur5r.net Git - i3/i3/blobdiff - src/randr.c
ipc: also send workspace event when initializing a workspace for an output
[i3/i3] / src / randr.c
index d56f01f09ae97c3b6d1bb35b9d741780ee01cce7..dac3c0105dee8e73128aa06be7d0773c67236798 100644 (file)
@@ -34,6 +34,7 @@
 #include "workspace.h"
 #include "log.h"
 #include "ewmh.h"
+#include "ipc.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. */
@@ -44,8 +45,10 @@ 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_screens
+ * 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.
  *
@@ -78,72 +81,75 @@ Output *get_output_by_name(const char *name) {
  *
  */
 Output *get_first_output() {
-        Output *screen;
+        Output *output;
 
-        TAILQ_FOREACH(screen, &outputs, outputs) {
-                if (screen->active)
-                        return screen;
-        }
+        TAILQ_FOREACH(output, &outputs, outputs)
+                if (output->active)
+                        return output;
 
         return NULL;
 }
 
 /*
- * Looks in virtual_screens for the Output which contains coordinates x, y
+ * Returns the active (!) output which contains the coordinates x, y or NULL
+ * if there is no output which contains these coordinates.
  *
  */
-Output *get_screen_containing(int x, int y) {
-        Output *screen;
-        TAILQ_FOREACH(screen, &outputs, outputs) {
-                if (!screen->active)
+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, screen->rect.x, screen->rect.y, screen->rect.width, screen->rect.height);
-                if (x >= screen->rect.x && x < (screen->rect.x + screen->rect.width) &&
-                    y >= screen->rect.y && y < (screen->rect.y + screen->rect.height))
-                        return screen;
+                                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 screen which is the last one in the given direction, for example the screen
- * on the most bottom when direction == D_DOWN, the screen most right when direction == D_RIGHT
- * and so on.
+ * 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 screen.
+ * This function always returns a output.
  *
  */
-Output *get_screen_most(direction_t direction, Output *current) {
-        Output *screen, *candidate = NULL;
+Output *get_output_most(direction_t direction, Output *current) {
+        Output *output, *candidate = NULL;
         int position = 0;
-        TAILQ_FOREACH(screen, &outputs, outputs) {
+        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 = screen; \
+                                candidate = output; \
                                 position = variable; \
                         } \
                         break;
 
                 if (((direction == D_UP) || (direction == D_DOWN)) &&
-                    (current->rect.x != screen->rect.x))
+                    (current->rect.x != output->rect.x))
                         continue;
 
                 if (((direction == D_LEFT) || (direction == D_RIGHT)) &&
-                    (current->rect.y != screen->rect.y))
+                    (current->rect.y != output->rect.y))
                         continue;
 
                 switch (direction) {
                         case D_UP:
-                                WIN(screen->rect.y, <= position);
+                                WIN(output->rect.y, <= position);
                         case D_DOWN:
-                                WIN(screen->rect.y, >= position);
+                                WIN(output->rect.y, >= position);
                         case D_LEFT:
-                                WIN(screen->rect.x, <= position);
+                                WIN(output->rect.x, <= position);
                         case D_RIGHT:
-                                WIN(screen->rect.x, >= position);
+                                WIN(output->rect.x, >= position);
                 }
         }
 
@@ -152,39 +158,51 @@ Output *get_screen_most(direction_t direction, Output *current) {
         return candidate;
 }
 
-static void initialize_output(xcb_connection_t *conn, Output *output,
-                              Workspace *workspace) {
+/*
+ * 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;
 
-        /* Create a xoutput for each output */
-        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);
+        /* 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);
 }
 
 /*
- * Fills virtual_screens with exactly one screen with width/height of the
- * whole X screen.
+ * Disables RandR support by creating exactly one output with the size of the
+ * X11 screen.
  *
  */
-static void disable_randr(xcb_connection_t *conn) {
+void disable_randr(xcb_connection_t *conn) {
         xcb_screen_t *root_screen = xcb_setup_roots_iterator(xcb_get_setup(conn)).data;
 
-        DLOG("RandR extension not found, disabling.\n");
+        DLOG("RandR extension unusable, disabling.\n");
 
         Output *s = scalloc(sizeof(Output));
 
@@ -193,26 +211,11 @@ static void disable_randr(xcb_connection_t *conn) {
         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);
-}
-
-/*
- * Searches for a mode in the current RandR configuration by the mode id.
- * Returns NULL if no such mode could be found (should never happen).
- *
- */
-static mode_info *get_mode_by_id(resources_reply *reply, xcb_randr_mode_t mode) {
-        xcb_randr_mode_info_iterator_t it;
-
-        for (it = xcb_randr_get_screen_resources_current_modes_iterator(reply);
-                it.rem > 0;
-                xcb_randr_mode_info_next(&it)) {
-                if (it.data->id == mode)
-                        return it.data;
-        }
 
-        return NULL;
+        randr_disabled = true;
 }
 
 /*
@@ -249,27 +252,35 @@ static void output_change_mode(xcb_connection_t *conn, Output *output) {
 
                 SLIST_FOREACH(client, &(ws->focus_stack), focus_clients)
                         client->force_reconfigure = true;
+
+                /* 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_screens() for each output. The function adds new
+ * 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.
+ * 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) {
-        Workspace *ws;
-
         /* each CRT controller has a position in which we are interested in */
         crtc_info *crtc;
 
-        /* the CRTC runs in a specific mode, while the position is stored in
-         * the output itself */
-        mode_info *mode;
-
         Output *new = get_output_by_id(id);
         bool existing = (new != NULL);
         if (!existing)
@@ -288,15 +299,7 @@ static void handle_output(xcb_connection_t *conn, xcb_randr_output_t id,
                 if (!existing)
                         TAILQ_INSERT_TAIL(&outputs, new, outputs);
                 else if (new->active) {
-                        new->active = false;
-                        new->current_workspace = NULL;
-                        DLOG("Output %s disabled (no CRTC)\n", new->name);
-                        TAILQ_FOREACH(ws, workspaces, workspaces) {
-                                if (ws->output != new)
-                                        continue;
-
-                                workspace_assign_to(ws, get_first_output());
-                        }
+                        new->to_be_disabled = true;
 
                 }
                 free(output);
@@ -305,10 +308,9 @@ static void handle_output(xcb_connection_t *conn, xcb_randr_output_t id,
 
         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 ||
-            (mode = get_mode_by_id(res, crtc->mode)) == NULL) {
-                DLOG("Skipping output %s: could not get CRTC/mode (%p/%p)\n",
-                     new->name, crtc, mode);
+        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);
                 free(output);
                 return;
@@ -317,8 +319,8 @@ static void handle_output(xcb_connection_t *conn, xcb_randr_output_t id,
         new->active = true;
         bool updated = update_if_necessary(&(new->rect.x), crtc->x) |
                        update_if_necessary(&(new->rect.y), crtc->y) |
-                       update_if_necessary(&(new->rect.width), mode->width) |
-                       update_if_necessary(&(new->rect.height), mode->height);
+                       update_if_necessary(&(new->rect.width), crtc->width) |
+                       update_if_necessary(&(new->rect.height), crtc->height);
 
         DLOG("mode: %dx%d+%d+%d\n", new->rect.width, new->rect.height,
                                     new->rect.x, new->rect.y);
@@ -333,14 +335,16 @@ static void handle_output(xcb_connection_t *conn, xcb_randr_output_t id,
                 return;
         }
 
-        output_change_mode(conn, new);
+        new->changed = true;
 }
 
 /*
  * (Re-)queries the outputs via RandR and stores them in the list of outputs.
  *
  */
-void randr_query_screens(xcb_connection_t *conn) {
+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
@@ -350,10 +354,15 @@ void randr_query_screens(xcb_connection_t *conn) {
         /* 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)
-                die("Could not get RandR screen resources\n");
+        if ((res = xcb_randr_get_screen_resources_current_reply(conn, rcookie, NULL)) == NULL) {
+                disable_randr(conn);
+                return;
+        }
         cts = res->config_timestamp;
 
         int len = xcb_randr_get_screen_resources_current_outputs_length(res);
@@ -365,8 +374,9 @@ void randr_query_screens(xcb_connection_t *conn) {
                 ocookie[i] = xcb_randr_get_output_info(conn, randr_outputs[i], cts);
 
         /* Loop through all outputs available for this X11 screen */
-        xcb_randr_get_output_info_reply_t *output;
         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;
 
@@ -374,50 +384,95 @@ void randr_query_screens(xcb_connection_t *conn) {
         }
 
         free(res);
-        Output *screen, *oscreen;
-        /* Check for clones and reduce the mode  to the lowest common mode */
-        TAILQ_FOREACH(screen, &outputs, outputs) {
-                if (!screen->active)
+        /* 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("screen %p, position (%d, %d), checking for clones\n",
-                        screen, screen->rect.x, screen->rect.y);
+                DLOG("output %p, position (%d, %d), checking for clones\n",
+                        output, output->rect.x, output->rect.y);
 
-                TAILQ_FOREACH(oscreen, &outputs, outputs) {
-                        if (oscreen == screen || !oscreen->active)
+                for (other = output;
+                     other != TAILQ_END(&outputs);
+                     other = TAILQ_NEXT(other, outputs)) {
+                        if (other == output || !other->active || other->to_be_disabled)
                                 continue;
 
-                        if (oscreen->rect.x != screen->rect.x ||
-                            oscreen->rect.y != screen->rect.y)
+                        if (other->rect.x != output->rect.x ||
+                            other->rect.y != output->rect.y)
                                 continue;
 
-                        DLOG("screen %p has the same position, his mode = %d x %d\n",
-                                        oscreen, oscreen->rect.width, oscreen->rect.height);
-                        uint32_t width = min(oscreen->rect.width, screen->rect.width);
-                        uint32_t height = min(oscreen->rect.height, screen->rect.height);
+                        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);
 
-                        if (update_if_necessary(&(screen->rect.width), width) |
-                            update_if_necessary(&(screen->rect.height), height))
-                                output_change_mode(conn, screen);
+                        DLOG("disabling output %p (%s)\n", other, other->name);
+                        other->to_be_disabled = true;
 
-                        if (update_if_necessary(&(oscreen->rect.width), width) |
-                            update_if_necessary(&(oscreen->rect.height), height))
-                                output_change_mode(conn, oscreen);
+                        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;
+                        }
 
-                        DLOG("new screen mode %d x %d, oscreen mode %d x %d\n",
-                                        screen->rect.width, screen->rect.height,
-                                        oscreen->rect.width, oscreen->rect.height);
+                        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();
 
-        /* Just go through each workspace and associate as many screens as we can. */
-        TAILQ_FOREACH(screen, &outputs, outputs) {
-                if (!screen->active || screen->current_workspace != NULL)
+        /* Just go through each active output and associate one workspace */
+        TAILQ_FOREACH(output, &outputs, outputs) {
+                if (!output->active || output->current_workspace != NULL)
                         continue;
-                Workspace *ws = get_first_workspace_for_screen(screen);
-                initialize_output(conn, screen, ws);
+                ws = get_first_workspace_for_output(output);
+                initialize_output(conn, output, ws);
         }
 
         /* render_layout flushes */
@@ -435,7 +490,7 @@ void initialize_randr(xcb_connection_t *conn, int *event_base) {
         extreply = xcb_get_extension_data(conn, &xcb_randr_id);
         if (!extreply->present)
                 disable_randr(conn);
-        else randr_query_screens(conn);
+        else randr_query_outputs(conn);
 
         if (event_base != NULL)
                 *event_base = extreply->first_event;