]> git.sur5r.net Git - i3/i3/blobdiff - src/handlers.c
Grab XCB_GRAB_SYNC and replay the event so it doesn’t get lost
[i3/i3] / src / handlers.c
index f18993e72687c633fe877af992960f45ac3d21b9..d058b650eec5f39c2224742ad4982d7eae221d3e 100644 (file)
@@ -3,7 +3,7 @@
  *
  * i3 - an improved dynamic tiling window manager
  *
- * (c) 2009 Michael Stapelberg and contributors
+ * © 2009 Michael Stapelberg and contributors
  *
  * See file LICENSE for license information.
  *
 #include "commands.h"
 #include "data.h"
 #include "font.h"
-
-static void set_focus(xcb_connection_t *conn, Client *client) {
-        /* Update container */
-        Client *old_client = client->container->currently_focused;
-        client->container->currently_focused = client;
-
-        current_col = client->container->col;
-        current_row = client->container->row;
-
-        /* Set focus to the entered window, and flush xcb buffer immediately */
-        xcb_set_input_focus(conn, XCB_INPUT_FOCUS_NONE, client->child, XCB_CURRENT_TIME);
-        /* Update last/current client’s titlebar */
-        if (old_client != NULL)
-                decorate_window(conn, old_client);
-        decorate_window(conn, client);
-        xcb_flush(conn);
-}
-
+#include "xcb.h"
+#include "util.h"
+#include "xinerama.h"
 
 /*
  * Due to bindings like Mode_switch + <a>, we need to bind some keys in XCB_GRAB_MODE_SYNC.
@@ -56,10 +41,8 @@ int handle_key_release(void *ignored, xcb_connection_t *conn, xcb_key_release_ev
 }
 
 /*
- * There was a key press. We lookup the key symbol and see if there are any bindings
- * on that. This allows to do things like binding special characters (think of ä) to
- * functions to get one more modifier while not losing AltGr :-)
- * TODO: this description needs to be more understandable
+ * There was a key press. We compare this key code with our bindings table and pass
+ * the bound action to parse_command().
  *
  */
 int handle_key_press(void *ignored, xcb_connection_t *conn, xcb_key_press_event_t *event) {
@@ -74,36 +57,29 @@ int handle_key_press(void *ignored, xcb_connection_t *conn, xcb_key_press_event_
 
         printf("state %d\n", event->state);
 
+        /* Remove the numlock bit, all other bits are modifiers we can bind to */
+        uint16_t state_filtered = event->state & ~XCB_MOD_MASK_LOCK;
+
         /* Find the binding */
-        /* TODO: event->state durch eine bitmask filtern und dann direkt vergleichen */
-        Binding *bind, *best_match = TAILQ_END(&bindings);
-        TAILQ_FOREACH(bind, &bindings, bindings) {
-                if (bind->keycode == event->detail &&
-                        (bind->mods & event->state) == bind->mods) {
-                        if (best_match == TAILQ_END(&bindings) ||
-                                bind->mods > best_match->mods)
-                                best_match = bind;
-                }
-        }
+        Binding *bind;
+        TAILQ_FOREACH(bind, &bindings, bindings)
+                if (bind->keycode == event->detail && bind->mods == state_filtered)
+                        break;
 
         /* No match? Then it was an actively grabbed key, that is with Mode_switch, and
            the user did not press Mode_switch, so just pass it… */
-        if (best_match == TAILQ_END(&bindings)) {
+        if (bind == TAILQ_END(&bindings)) {
                 xcb_allow_events(conn, ReplayKeyboard, event->time);
                 xcb_flush(conn);
                 return 1;
         }
 
+        parse_command(conn, bind->command);
         if (event->state & 0x2) {
-                printf("that's mode_switch\n");
-                parse_command(conn, best_match->command);
-                printf("ok, hiding this event.\n");
+                printf("Mode_switch -> allow_events(SyncKeyboard)\n");
                 xcb_allow_events(conn, SyncKeyboard, event->time);
                 xcb_flush(conn);
-                return 1;
         }
-
-        parse_command(conn, best_match->command);
         return 1;
 }
 
@@ -113,7 +89,7 @@ int handle_key_press(void *ignored, xcb_connection_t *conn, xcb_key_press_event_
  *
  */
 int handle_enter_notify(void *ignored, xcb_connection_t *conn, xcb_enter_notify_event_t *event) {
-        printf("enter_notify\n");
+        printf("enter_notify for %08x\n", event->event);
 
         /* This was either a focus for a client’s parent (= titlebar)… */
         Client *client = table_get(byParent, event->event);
@@ -121,12 +97,23 @@ int handle_enter_notify(void *ignored, xcb_connection_t *conn, xcb_enter_notify_
         if (client == NULL)
                 client = table_get(byChild, event->event);
 
-        /* If not, then this event is not interesting. This should not happen */
+        /* If not, then the user moved his cursor to the root window. In that case, we adjust c_ws */
         if (client == NULL) {
-                printf("DEBUG: Uninteresting enter_notify-event?\n");
+                printf("Getting screen at %d x %d\n", event->root_x, event->root_y);
+                i3Screen *screen = get_screen_containing(event->root_x, event->root_y);
+                if (screen == NULL) {
+                        printf("ERROR: No such screen\n");
+                        return 0;
+                }
+                c_ws = &workspaces[screen->current_workspace];
+                printf("We're now on virtual screen number %d\n", screen->num);
                 return 1;
         }
 
+        /* When in stacking, enter notifications are ignored. Focus will be changed via keyboard only. */
+        if (client->container->mode == MODE_STACK)
+                return 1;
+
         set_focus(conn, client);
 
         return 1;
@@ -136,8 +123,11 @@ int handle_button_press(void *ignored, xcb_connection_t *conn, xcb_button_press_
         printf("button press!\n");
         /* This was either a focus for a client’s parent (= titlebar)… */
         Client *client = table_get(byChild, event->event);
-        if (client == NULL)
+        bool border_click = false;
+        if (client == NULL) {
                 client = table_get(byParent, event->event);
+                border_click = true;
+        }
         if (client == NULL)
                 return 1;
 
@@ -148,56 +138,80 @@ int handle_button_press(void *ignored, xcb_connection_t *conn, xcb_button_press_
         set_focus(conn, client);
 
         /* Let’s see if this was on the borders (= resize). If not, we’re done */
-        i3Font *font = load_font(conn, pattern);
         printf("press button on x=%d, y=%d\n", event->event_x, event->event_y);
-        if (event->event_y <= (font->height + 2))
+
+        Container *con = client->container,
+                  *first = NULL,
+                  *second = NULL;
+        enum { O_HORIZONTAL, O_VERTICAL } orientation = O_VERTICAL;
+
+        if (con == NULL) {
+                printf("dock. done.\n");
+                xcb_allow_events(conn, XCB_ALLOW_REPLAY_POINTER, event->time);
+                xcb_flush(conn);
+                return 1;
+        }
+
+        printf("event->event_x = %d, client->rect.width = %d\n", event->event_x, client->rect.width);
+
+        if (!border_click) {
+                printf("client. done.\n");
+                xcb_allow_events(conn, XCB_ALLOW_REPLAY_POINTER, event->time);
+                xcb_flush(conn);
                 return 1;
+        }
 
-        printf("that was resize\n");
+        if (event->event_y < 2) {
+                /* This was a press on the top border */
+                if (con->row == 0)
+                        return 1;
+                first = con->workspace->table[con->col][con->row-1];
+                second = con;
+                orientation = O_HORIZONTAL;
+        } else if (event->event_y >= (client->rect.height - 2)) {
+                /* …bottom border */
+                if (con->row == (con->workspace->rows-1))
+                        return 1;
+                first = con;
+                second = con->workspace->table[con->col][con->row+1];
+                orientation = O_HORIZONTAL;
+        } else if (event->event_x < 2) {
+                /* …left border */
+                if (con->col == 0)
+                        return 1;
+                first = con->workspace->table[con->col-1][con->row];
+                second = con;
+        } else if (event->event_x > 2) {
+                /* …right border */
+                if (con->col == (con->workspace->cols-1))
+                        return 1;
+                first = con;
+                second = con->workspace->table[con->col+1][con->row];
+        }
 
         /* Open a new window, the resizebar. Grab the pointer and move the window around
            as the user moves the pointer. */
+        Rect grabrect = {0, 0, root_screen->width_in_pixels, root_screen->height_in_pixels};
+        xcb_window_t grabwin = create_window(conn, grabrect, XCB_WINDOW_CLASS_INPUT_ONLY, 0, NULL);
+
+        Rect helprect;
+        if (orientation == O_VERTICAL) {
+                helprect.x = event->root_x;
+                helprect.y = 0;
+                helprect.width = 2;
+                helprect.height = root_screen->height_in_pixels; /* this has to be the cell’s height */
+        } else {
+                helprect.x = 0;
+                helprect.y = event->root_y;
+                helprect.width = root_screen->width_in_pixels; /* this has to be the cell’s width*/
+                helprect.height = 2;
+        }
+        xcb_window_t helpwin = create_window(conn, helprect, XCB_WINDOW_CLASS_INPUT_OUTPUT, 0, NULL);
 
+        uint32_t values[1] = {get_colorpixel(conn, NULL, helpwin, "#4c7899")};
+        xcb_void_cookie_t cookie = xcb_change_window_attributes_checked(conn, helpwin, XCB_CW_BACK_PIXEL, values);
+        check_error(conn, cookie, "Could not change window attributes (background color)");
 
-        /* TODO: the whole logic is missing. this is just a proof of concept */
-        xcb_window_t grabwin = xcb_generate_id(conn);
-
-        uint32_t mask = 0;
-        uint32_t values[3];
-
-        xcb_create_window(conn,
-                        0,
-                        grabwin,
-                        root,
-                        0, /* x */
-                        0, /* y */
-                        root_screen->width_in_pixels, /* width */
-                        root_screen->height_in_pixels, /* height */
-                        /* border_width */ 0,
-                        XCB_WINDOW_CLASS_INPUT_ONLY,
-                        root_screen->root_visual,
-                        0,
-                        values);
-
-        /* Map the window on the screen (= make it visible) */
-        xcb_map_window(conn, grabwin);
-
-        xcb_window_t helpwin = xcb_generate_id(conn);
-
-        mask = XCB_CW_BACK_PIXEL;
-        values[0] = root_screen->white_pixel;
-        xcb_create_window(conn, root_screen->root_depth, helpwin, root,
-                        event->root_x,
-                        0,
-                        5,
-                        root_screen->height_in_pixels,
-                        /* bordor */ 0,
-                        XCB_WINDOW_CLASS_INPUT_OUTPUT,
-                        root_screen->root_visual,
-                        mask,
-                        values);
-
-        xcb_map_window(conn, helpwin);
         xcb_circulate_window(conn, XCB_CIRCULATE_RAISE_LOWEST, helpwin);
 
         xcb_grab_pointer(conn, false, root, XCB_EVENT_MASK_BUTTON_RELEASE | XCB_EVENT_MASK_POINTER_MOTION,
@@ -211,21 +225,29 @@ int handle_button_press(void *ignored, xcb_connection_t *conn, xcb_button_press_
                 /* 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);
 
-                /* Check if we need to escape this loop */
+                /* Check if we need to escape this loop */
                 if (nr == XCB_BUTTON_RELEASE)
                         break;
 
                 switch (nr) {
                         case XCB_MOTION_NOTIFY:
-                                values[0] = ((xcb_motion_notify_event_t*)inside_event)->root_x;
-                                xcb_configure_window(conn, helpwin, XCB_CONFIG_WINDOW_X, values);
+                                if (orientation == O_VERTICAL) {
+                                        values[0] = ((xcb_motion_notify_event_t*)inside_event)->root_x;
+                                        xcb_configure_window(conn, helpwin, XCB_CONFIG_WINDOW_X, values);
+                                } else {
+                                        values[0] = ((xcb_motion_notify_event_t*)inside_event)->root_y;
+                                        xcb_configure_window(conn, helpwin, XCB_CONFIG_WINDOW_Y, values);
+                                }
+
                                 xcb_flush(conn);
                                 break;
                         case XCB_EXPOSE:
@@ -236,7 +258,6 @@ int handle_button_press(void *ignored, xcb_connection_t *conn, xcb_button_press_
                                 printf("Ignoring event of type %d\n", nr);
                                 break;
                 }
-                printf("---\n");
                 free(inside_event);
         }
 
@@ -245,9 +266,40 @@ int handle_button_press(void *ignored, xcb_connection_t *conn, xcb_button_press_
         xcb_destroy_window(conn, grabwin);
         xcb_flush(conn);
 
+        Workspace *ws = con->workspace;
+        if (orientation == O_VERTICAL) {
+                printf("Resize was from X = %d to X = %d\n", event->root_x, values[0]);
+
+                /* Convert 0 (for default width_factor) to actual numbers */
+                if (first->width_factor == 0)
+                        first->width_factor = ((float)ws->rect.width / ws->cols) / ws->rect.width;
+                if (second->width_factor == 0)
+                        second->width_factor = ((float)ws->rect.width / ws->cols) / ws->rect.width;
+
+                first->width_factor *= (float)(first->width + (values[0] - event->root_x)) / first->width;
+                second->width_factor *= (float)(second->width - (values[0] - event->root_x)) / second->width;
+        } else {
+                printf("Resize was from Y = %d to Y = %d\n", event->root_y, values[0]);
+
+                /* Convert 0 (for default height_factor) to actual numbers */
+                if (first->height_factor == 0)
+                        first->height_factor = ((float)ws->rect.height / ws->rows) / ws->rect.height;
+                if (second->height_factor == 0)
+                        second->height_factor = ((float)ws->rect.height / ws->rows) / ws->rect.height;
+
+                first->height_factor *= (float)(first->height + (values[0] - event->root_y)) / first->height;
+                second->height_factor *= (float)(second->height - (values[0] - event->root_y)) / second->height;
+        }
+
+        render_layout(conn);
+
         return 1;
 }
 
+/*
+ * A new window appeared on the screen (=was mapped), so let’s manage it.
+ *
+ */
 int handle_map_notify_event(void *prophs, xcb_connection_t *conn, xcb_map_notify_event_t *event) {
         window_attributes_t wa = { TAG_VALUE };
         wa.u.override_redirect = event->override_redirect;
@@ -262,37 +314,43 @@ int handle_map_notify_event(void *prophs, xcb_connection_t *conn, xcb_map_notify
  *
  */
 int handle_unmap_notify_event(void *data, xcb_connection_t *c, xcb_unmap_notify_event_t *e) {
-        Client *client = table_remove(byChild, e->event);
-        xcb_window_t root;
+        xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(c)).data->root;
+
+        Client *client = table_get(byChild, e->window);
+        /* First, we need to check if the client is awaiting an unmap-request which
+           was generated by us reparenting the window. In that case, we just ignore it. */
+        if (client != NULL && client->awaiting_useless_unmap) {
+                printf("Dropping this unmap request, it was generated by reparenting\n");
+                client->awaiting_useless_unmap = false;
+                return 1;
+        }
+        client = table_remove(byChild, e->window);
+
         printf("UnmapNotify for 0x%08x (received from 0x%08x): ", e->window, e->event);
-        if(!client)
-        {
+        if (client == NULL) {
                 printf("not a managed window. Ignoring.\n");
                 return 0;
         }
 
-        int rows, cols;
-        Client *con_client;
-        /* TODO: clear this up */
-        for (cols = 0; cols < c_ws->cols; cols++)
-                for (rows = 0; rows < c_ws->rows; rows++)
-                        CIRCLEQ_FOREACH(con_client, &(CUR_TABLE[cols][rows]->clients), clients)
-                                if (con_client == client) {
-                                        printf("removing from container\n");
-                                        if (client->container->currently_focused == client)
-                                                client->container->currently_focused = NULL;
-                                        CIRCLEQ_REMOVE(&(CUR_TABLE[cols][rows]->clients), con_client, clients);
-                                        break;
-                                }
-
-
+        if (client->container != NULL) {
+                Client *to_focus = CIRCLEQ_NEXT_OR_NULL(&(client->container->clients), client, clients);
+                if (to_focus == NULL)
+                        to_focus = CIRCLEQ_PREV_OR_NULL(&(client->container->clients), client, clients);
+                if (client->container->currently_focused == client)
+                        client->container->currently_focused = to_focus;
+                CIRCLEQ_REMOVE(&(client->container->clients), client, clients);
+                if (to_focus != NULL)
+                        set_focus(c, to_focus);
+        }
 
-        root = xcb_setup_roots_iterator(xcb_get_setup(c)).data->root;
         printf("child of 0x%08x.\n", client->frame);
         xcb_reparent_window(c, client->child, root, 0, 0);
         xcb_destroy_window(c, client->frame);
         xcb_flush(c);
         table_remove(byParent, client->frame);
+
+        cleanup_table(client->container->workspace);
+
         free(client);
 
         render_layout(c);
@@ -316,7 +374,7 @@ int handle_windowname_change(void *data, xcb_connection_t *conn, uint8_t state,
         strncpy(client->name, xcb_get_property_value(prop), client->name_len);
         printf("rename to \"%.*s\".\n", client->name_len, client->name);
 
-        decorate_window(conn, client);
+        decorate_window(conn, client, client->frame, client->titlegc, 0);
         xcb_flush(conn);
 
         return 1;
@@ -327,10 +385,68 @@ int handle_windowname_change(void *data, xcb_connection_t *conn, uint8_t state,
  *
  */
 int handle_expose_event(void *data, xcb_connection_t *conn, xcb_expose_event_t *e) {
-        printf("handle_expose_event()\n");
+        printf("got expose_event\n");
+        /* e->count is the number of minimum remaining expose events for this window, so we
+           skip all events but the last one */
+        if (e->count != 0)
+                return 1;
+
         Client *client = table_get(byParent, e->window);
-        if(!client || e->count != 0)
+        if (client == NULL) {
+                /* There was no client in the table, so this is probably an expose event for
+                   one of our stack_windows. */
+                struct Stack_Window *stack_win;
+                SLIST_FOREACH(stack_win, &stack_wins, stack_windows)
+                        if (stack_win->window == e->window) {
+                                render_container(conn, stack_win->container);
+                                return 1;
+                        }
                 return 1;
-        decorate_window(conn, client);
+        }
+
+        printf("handle_expose_event()\n");
+        if (client->container->mode != MODE_STACK)
+                decorate_window(conn, client, client->frame, client->titlegc, 0);
+        return 1;
+}
+
+/*
+ * Handle client messages (EWMH)
+ *
+ */
+int handle_client_message(void *data, xcb_connection_t *conn, xcb_client_message_event_t *event) {
+        printf("client_message\n");
+
+        if (event->type == atoms[_NET_WM_STATE]) {
+                if (event->format != 32 || event->data.data32[1] != atoms[_NET_WM_STATE_FULLSCREEN])
+                        return 0;
+
+                printf("fullscreen\n");
+
+                Client *client = table_get(byChild, event->window);
+                if (client == NULL)
+                        return 0;
+
+                /* Check if the fullscreen state should be toggled */
+                if ((client->fullscreen &&
+                     (event->data.data32[0] == _NET_WM_STATE_REMOVE ||
+                      event->data.data32[0] == _NET_WM_STATE_TOGGLE)) ||
+                    (!client->fullscreen &&
+                     (event->data.data32[0] == _NET_WM_STATE_ADD ||
+                      event->data.data32[0] == _NET_WM_STATE_TOGGLE)))
+                        toggle_fullscreen(conn, client);
+        } else {
+                printf("unhandled clientmessage\n");
+                return 0;
+        }
+
         return 1;
 }
+
+int window_type_handler(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
+                        xcb_atom_t atom, xcb_get_property_reply_t *property) {
+        /* TODO: Implement this one. To do this, implement a little test program which sleep(1)s
+         before changing this property. */
+        printf("_NET_WM_WINDOW_TYPE changed, this is not yet implemented.\n");
+        return 0;
+}