i3
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00001 /* 00002 * vim:ts=4:sw=4:expandtab 00003 * 00004 * i3 - an improved dynamic tiling window manager 00005 * © 2009-2012 Michael Stapelberg and contributors (see also: LICENSE) 00006 * 00007 * x.c: Interface to X11, transfers our in-memory state to X11 (see also 00008 * render.c). Basically a big state machine. 00009 * 00010 */ 00011 #include "all.h" 00012 00013 /* Stores the X11 window ID of the currently focused window */ 00014 xcb_window_t focused_id = XCB_NONE; 00015 00016 /* The bottom-to-top window stack of all windows which are managed by i3. 00017 * Used for x_get_window_stack(). */ 00018 static xcb_window_t *btt_stack; 00019 static int btt_stack_num; 00020 00021 /* Stores coordinates to warp mouse pointer to if set */ 00022 static Rect *warp_to; 00023 00024 /* 00025 * Describes the X11 state we may modify (map state, position, window stack). 00026 * There is one entry per container. The state represents the current situation 00027 * as X11 sees it (with the exception of the order in the state_head CIRCLEQ, 00028 * which represents the order that will be pushed to X11, while old_state_head 00029 * represents the current order). It will be updated in x_push_changes(). 00030 * 00031 */ 00032 typedef struct con_state { 00033 xcb_window_t id; 00034 bool mapped; 00035 bool unmap_now; 00036 bool child_mapped; 00037 00039 Con *con; 00040 00041 /* For reparenting, we have a flag (need_reparent) and the X ID of the old 00042 * frame this window was in. The latter is necessary because we need to 00043 * ignore UnmapNotify events (by changing the window event mask). */ 00044 bool need_reparent; 00045 xcb_window_t old_frame; 00046 00047 Rect rect; 00048 Rect window_rect; 00049 00050 bool initial; 00051 00052 char *name; 00053 00054 CIRCLEQ_ENTRY(con_state) state; 00055 CIRCLEQ_ENTRY(con_state) old_state; 00056 } con_state; 00057 00058 CIRCLEQ_HEAD(state_head, con_state) state_head = 00059 CIRCLEQ_HEAD_INITIALIZER(state_head); 00060 00061 CIRCLEQ_HEAD(old_state_head, con_state) old_state_head = 00062 CIRCLEQ_HEAD_INITIALIZER(old_state_head); 00063 00064 /* 00065 * Returns the container state for the given frame. This function always 00066 * returns a container state (otherwise, there is a bug in the code and the 00067 * container state of a container for which x_con_init() was not called was 00068 * requested). 00069 * 00070 */ 00071 static con_state *state_for_frame(xcb_window_t window) { 00072 con_state *state; 00073 CIRCLEQ_FOREACH(state, &state_head, state) 00074 if (state->id == window) 00075 return state; 00076 00077 /* TODO: better error handling? */ 00078 ELOG("No state found\n"); 00079 assert(false); 00080 return NULL; 00081 } 00082 00083 /* 00084 * Initializes the X11 part for the given container. Called exactly once for 00085 * every container from con_new(). 00086 * 00087 */ 00088 void x_con_init(Con *con) { 00089 /* TODO: maybe create the window when rendering first? we could then even 00090 * get the initial geometry right */ 00091 00092 uint32_t mask = 0; 00093 uint32_t values[2]; 00094 00095 /* our own frames should not be managed */ 00096 mask |= XCB_CW_OVERRIDE_REDIRECT; 00097 values[0] = 1; 00098 00099 /* see include/xcb.h for the FRAME_EVENT_MASK */ 00100 mask |= XCB_CW_EVENT_MASK; 00101 values[1] = FRAME_EVENT_MASK & ~XCB_EVENT_MASK_ENTER_WINDOW; 00102 00103 Rect dims = { -15, -15, 10, 10 }; 00104 con->frame = create_window(conn, dims, XCB_WINDOW_CLASS_INPUT_OUTPUT, XCURSOR_CURSOR_POINTER, false, mask, values); 00105 00106 struct con_state *state = scalloc(sizeof(struct con_state)); 00107 state->id = con->frame; 00108 state->mapped = false; 00109 state->initial = true; 00110 CIRCLEQ_INSERT_HEAD(&state_head, state, state); 00111 CIRCLEQ_INSERT_HEAD(&old_state_head, state, old_state); 00112 DLOG("adding new state for window id 0x%08x\n", state->id); 00113 } 00114 00115 /* 00116 * Re-initializes the associated X window state for this container. You have 00117 * to call this when you assign a client to an empty container to ensure that 00118 * its state gets updated correctly. 00119 * 00120 */ 00121 void x_reinit(Con *con) { 00122 struct con_state *state; 00123 00124 if ((state = state_for_frame(con->frame)) == NULL) { 00125 ELOG("window state not found\n"); 00126 return; 00127 } 00128 00129 DLOG("resetting state %p to initial\n", state); 00130 state->initial = true; 00131 state->child_mapped = false; 00132 state->con = con; 00133 memset(&(state->window_rect), 0, sizeof(Rect)); 00134 } 00135 00136 /* 00137 * Reparents the child window of the given container (necessary for sticky 00138 * containers). The reparenting happens in the next call of x_push_changes(). 00139 * 00140 */ 00141 void x_reparent_child(Con *con, Con *old) { 00142 struct con_state *state; 00143 if ((state = state_for_frame(con->frame)) == NULL) { 00144 ELOG("window state for con not found\n"); 00145 return; 00146 } 00147 00148 state->need_reparent = true; 00149 state->old_frame = old->frame; 00150 } 00151 00152 /* 00153 * Moves a child window from Container src to Container dest. 00154 * 00155 */ 00156 void x_move_win(Con *src, Con *dest) { 00157 struct con_state *state_src, *state_dest; 00158 00159 if ((state_src = state_for_frame(src->frame)) == NULL) { 00160 ELOG("window state for src not found\n"); 00161 return; 00162 } 00163 00164 if ((state_dest = state_for_frame(dest->frame)) == NULL) { 00165 ELOG("window state for dest not found\n"); 00166 return; 00167 } 00168 00169 state_dest->con = state_src->con; 00170 state_src->con = NULL; 00171 00172 Rect zero = { 0, 0, 0, 0 }; 00173 if (memcmp(&(state_dest->window_rect), &(zero), sizeof(Rect)) == 0) { 00174 memcpy(&(state_dest->window_rect), &(state_src->window_rect), sizeof(Rect)); 00175 DLOG("COPYING RECT\n"); 00176 } 00177 } 00178 00179 /* 00180 * Kills the window decoration associated with the given container. 00181 * 00182 */ 00183 void x_con_kill(Con *con) { 00184 con_state *state; 00185 00186 xcb_destroy_window(conn, con->frame); 00187 xcb_free_pixmap(conn, con->pixmap); 00188 xcb_free_gc(conn, con->pm_gc); 00189 state = state_for_frame(con->frame); 00190 CIRCLEQ_REMOVE(&state_head, state, state); 00191 CIRCLEQ_REMOVE(&old_state_head, state, old_state); 00192 FREE(state->name); 00193 free(state); 00194 00195 /* Invalidate focused_id to correctly focus new windows with the same ID */ 00196 focused_id = XCB_NONE; 00197 } 00198 00199 /* 00200 * Returns true if the client supports the given protocol atom (like WM_DELETE_WINDOW) 00201 * 00202 */ 00203 bool window_supports_protocol(xcb_window_t window, xcb_atom_t atom) { 00204 xcb_get_property_cookie_t cookie; 00205 xcb_icccm_get_wm_protocols_reply_t protocols; 00206 bool result = false; 00207 00208 cookie = xcb_icccm_get_wm_protocols(conn, window, A_WM_PROTOCOLS); 00209 if (xcb_icccm_get_wm_protocols_reply(conn, cookie, &protocols, NULL) != 1) 00210 return false; 00211 00212 /* Check if the client’s protocols have the requested atom set */ 00213 for (uint32_t i = 0; i < protocols.atoms_len; i++) 00214 if (protocols.atoms[i] == atom) 00215 result = true; 00216 00217 xcb_icccm_get_wm_protocols_reply_wipe(&protocols); 00218 00219 return result; 00220 } 00221 00222 /* 00223 * Kills the given X11 window using WM_DELETE_WINDOW (if supported). 00224 * 00225 */ 00226 void x_window_kill(xcb_window_t window, kill_window_t kill_window) { 00227 /* if this window does not support WM_DELETE_WINDOW, we kill it the hard way */ 00228 if (!window_supports_protocol(window, A_WM_DELETE_WINDOW)) { 00229 if (kill_window == KILL_WINDOW) { 00230 LOG("Killing specific window 0x%08x\n", window); 00231 xcb_destroy_window(conn, window); 00232 } else { 00233 LOG("Killing the X11 client which owns window 0x%08x\n", window); 00234 xcb_kill_client(conn, window); 00235 } 00236 return; 00237 } 00238 00239 /* Every X11 event is 32 bytes long. Therefore, XCB will copy 32 bytes. 00240 * In order to properly initialize these bytes, we allocate 32 bytes even 00241 * though we only need less for an xcb_configure_notify_event_t */ 00242 void *event = scalloc(32); 00243 xcb_client_message_event_t *ev = event; 00244 00245 ev->response_type = XCB_CLIENT_MESSAGE; 00246 ev->window = window; 00247 ev->type = A_WM_PROTOCOLS; 00248 ev->format = 32; 00249 ev->data.data32[0] = A_WM_DELETE_WINDOW; 00250 ev->data.data32[1] = XCB_CURRENT_TIME; 00251 00252 LOG("Sending WM_DELETE to the client\n"); 00253 xcb_send_event(conn, false, window, XCB_EVENT_MASK_NO_EVENT, (char*)ev); 00254 xcb_flush(conn); 00255 free(event); 00256 } 00257 00258 /* 00259 * Draws the decoration of the given container onto its parent. 00260 * 00261 */ 00262 void x_draw_decoration(Con *con) { 00263 Con *parent = con->parent; 00264 bool leaf = con_is_leaf(con); 00265 /* This code needs to run for: 00266 * • leaf containers 00267 * • non-leaf containers which are in a stacked/tabbed container 00268 * 00269 * It does not need to run for: 00270 * • floating containers (they don’t have a decoration) 00271 */ 00272 if ((!leaf && 00273 parent->layout != L_STACKED && 00274 parent->layout != L_TABBED) || 00275 con->type == CT_FLOATING_CON) 00276 return; 00277 00278 /* Skip containers whose height is 0 (for example empty dockareas) */ 00279 if (con->rect.height == 0) 00280 return; 00281 00282 /* Skip containers whose pixmap has not yet been created (can happen when 00283 * decoration rendering happens recursively for a window for which 00284 * x_push_node() was not yet called) */ 00285 if (leaf && con->pixmap == XCB_NONE) 00286 return; 00287 00288 /* 1: build deco_params and compare with cache */ 00289 struct deco_render_params *p = scalloc(sizeof(struct deco_render_params)); 00290 00291 /* find out which colors to use */ 00292 if (con->urgent) 00293 p->color = &config.client.urgent; 00294 else if (con == focused || con_inside_focused(con)) 00295 p->color = &config.client.focused; 00296 else if (con == TAILQ_FIRST(&(parent->focus_head))) 00297 p->color = &config.client.focused_inactive; 00298 else 00299 p->color = &config.client.unfocused; 00300 00301 p->border_style = con_border_style(con); 00302 00303 Rect *r = &(con->rect); 00304 Rect *w = &(con->window_rect); 00305 p->con_rect = (struct width_height){ r->width, r->height }; 00306 p->con_window_rect = (struct width_height){ w->width, w->height }; 00307 p->con_deco_rect = con->deco_rect; 00308 p->background = config.client.background; 00309 p->con_is_leaf = con_is_leaf(con); 00310 p->font = config.font.id; 00311 00312 if (con->deco_render_params != NULL && 00313 (con->window == NULL || !con->window->name_x_changed) && 00314 !parent->pixmap_recreated && 00315 !con->pixmap_recreated && 00316 memcmp(p, con->deco_render_params, sizeof(struct deco_render_params)) == 0) { 00317 free(p); 00318 goto copy_pixmaps; 00319 } 00320 00321 Con *next = con; 00322 while ((next = TAILQ_NEXT(next, nodes))) { 00323 FREE(next->deco_render_params); 00324 } 00325 00326 FREE(con->deco_render_params); 00327 con->deco_render_params = p; 00328 00329 if (con->window != NULL && con->window->name_x_changed) 00330 con->window->name_x_changed = false; 00331 00332 parent->pixmap_recreated = false; 00333 con->pixmap_recreated = false; 00334 00335 /* 2: draw the client.background, but only for the parts around the client_rect */ 00336 if (con->window != NULL) { 00337 xcb_rectangle_t background[] = { 00338 /* top area */ 00339 { 0, 0, r->width, w->y }, 00340 /* bottom area */ 00341 { 0, (w->y + w->height), r->width, r->height - (w->y + w->height) }, 00342 /* left area */ 00343 { 0, 0, w->x, r->height }, 00344 /* right area */ 00345 { w->x + w->width, 0, r->width - (w->x + w->width), r->height } 00346 }; 00347 #if 0 00348 for (int i = 0; i < 4; i++) 00349 DLOG("rect is (%d, %d) with %d x %d\n", 00350 background[i].x, 00351 background[i].y, 00352 background[i].width, 00353 background[i].height 00354 ); 00355 #endif 00356 00357 xcb_change_gc(conn, con->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]) { config.client.background }); 00358 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, sizeof(background) / sizeof(xcb_rectangle_t), background); 00359 } 00360 00361 /* 3: draw a rectangle in border color around the client */ 00362 if (p->border_style != BS_NONE && p->con_is_leaf) { 00363 Rect br = con_border_style_rect(con); 00364 #if 0 00365 DLOG("con->rect spans %d x %d\n", con->rect.width, con->rect.height); 00366 DLOG("border_rect spans (%d, %d) with %d x %d\n", br.x, br.y, br.width, br.height); 00367 DLOG("window_rect spans (%d, %d) with %d x %d\n", con->window_rect.x, con->window_rect.y, con->window_rect.width, con->window_rect.height); 00368 #endif 00369 00370 /* These rectangles represents the border around the child window 00371 * (left, bottom and right part). We don’t just fill the whole 00372 * rectangle because some childs are not freely resizable and we want 00373 * their background color to "shine through". */ 00374 xcb_change_gc(conn, con->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->background }); 00375 xcb_rectangle_t borders[] = { 00376 { 0, 0, br.x, r->height }, 00377 { 0, r->height + br.height + br.y, r->width, r->height }, 00378 { r->width + br.width + br.x, 0, r->width, r->height } 00379 }; 00380 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 3, borders); 00381 /* 1pixel border needs an additional line at the top */ 00382 if (p->border_style == BS_1PIXEL) { 00383 xcb_rectangle_t topline = { br.x, 0, con->rect.width + br.width + br.x, br.y }; 00384 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, &topline); 00385 } 00386 } 00387 00388 /* if this is a borderless/1pixel window, we don’t * need to render the 00389 * decoration. */ 00390 if (p->border_style != BS_NORMAL) 00391 goto copy_pixmaps; 00392 00393 /* 4: paint the bar */ 00394 xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->background }); 00395 xcb_rectangle_t drect = { con->deco_rect.x, con->deco_rect.y, con->deco_rect.width, con->deco_rect.height }; 00396 xcb_poly_fill_rectangle(conn, parent->pixmap, parent->pm_gc, 1, &drect); 00397 00398 /* 5: draw two unconnected lines in border color */ 00399 xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->border }); 00400 Rect *dr = &(con->deco_rect); 00401 xcb_segment_t segments[] = { 00402 { dr->x, dr->y, 00403 dr->x + dr->width - 1, dr->y }, 00404 00405 { dr->x + 2, dr->y + dr->height - 1, 00406 dr->x + dr->width - 3, dr->y + dr->height - 1 } 00407 }; 00408 xcb_poly_segment(conn, parent->pixmap, parent->pm_gc, 2, segments); 00409 00410 /* 6: draw the title */ 00411 uint32_t mask = XCB_GC_FOREGROUND | XCB_GC_BACKGROUND | XCB_GC_FONT; 00412 uint32_t values[] = { p->color->text, p->color->background, config.font.id }; 00413 xcb_change_gc(conn, parent->pm_gc, mask, values); 00414 int text_offset_y = config.font.height + (con->deco_rect.height - config.font.height) / 2 - 1; 00415 00416 struct Window *win = con->window; 00417 if (win == NULL || win->name_x == NULL) { 00418 /* this is a non-leaf container, we need to make up a good description */ 00419 // TODO: use a good description instead of just "another container" 00420 xcb_image_text_8( 00421 conn, 00422 strlen("another container"), 00423 parent->pixmap, 00424 parent->pm_gc, 00425 con->deco_rect.x + 2, 00426 con->deco_rect.y + text_offset_y, 00427 "another container" 00428 ); 00429 00430 goto copy_pixmaps; 00431 } 00432 00433 int indent_level = 0, 00434 indent_mult = 0; 00435 Con *il_parent = parent; 00436 if (il_parent->layout != L_STACKED) { 00437 while (1) { 00438 //DLOG("il_parent = %p, layout = %d\n", il_parent, il_parent->layout); 00439 if (il_parent->layout == L_STACKED) 00440 indent_level++; 00441 if (il_parent->type == CT_WORKSPACE || il_parent->type == CT_DOCKAREA || il_parent->type == CT_OUTPUT) 00442 break; 00443 il_parent = il_parent->parent; 00444 indent_mult++; 00445 } 00446 } 00447 //DLOG("indent_level = %d, indent_mult = %d\n", indent_level, indent_mult); 00448 int indent_px = (indent_level * 5) * indent_mult; 00449 00450 if (win->uses_net_wm_name) 00451 xcb_image_text_16( 00452 conn, 00453 win->name_len, 00454 parent->pixmap, 00455 parent->pm_gc, 00456 con->deco_rect.x + 2 + indent_px, 00457 con->deco_rect.y + text_offset_y, 00458 (xcb_char2b_t*)win->name_x 00459 ); 00460 else 00461 xcb_image_text_8( 00462 conn, 00463 win->name_len, 00464 parent->pixmap, 00465 parent->pm_gc, 00466 con->deco_rect.x + 2 + indent_px, 00467 con->deco_rect.y + text_offset_y, 00468 win->name_x 00469 ); 00470 00471 copy_pixmaps: 00472 xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height); 00473 } 00474 00475 /* 00476 * Recursively calls x_draw_decoration. This cannot be done in x_push_node 00477 * because x_push_node uses focus order to recurse (see the comment above) 00478 * while drawing the decoration needs to happen in the actual order. 00479 * 00480 */ 00481 void x_deco_recurse(Con *con) { 00482 Con *current; 00483 bool leaf = TAILQ_EMPTY(&(con->nodes_head)) && 00484 TAILQ_EMPTY(&(con->floating_head)); 00485 con_state *state = state_for_frame(con->frame); 00486 00487 if (!leaf) { 00488 TAILQ_FOREACH(current, &(con->nodes_head), nodes) 00489 x_deco_recurse(current); 00490 00491 TAILQ_FOREACH(current, &(con->floating_head), floating_windows) 00492 x_deco_recurse(current); 00493 00494 if (state->mapped) 00495 xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height); 00496 } 00497 00498 if ((con->type != CT_ROOT && con->type != CT_OUTPUT) && 00499 (!leaf || con->mapped)) 00500 x_draw_decoration(con); 00501 } 00502 00503 /* 00504 * This function pushes the properties of each node of the layout tree to 00505 * X11 if they have changed (like the map state, position of the window, …). 00506 * It recursively traverses all children of the given node. 00507 * 00508 */ 00509 void x_push_node(Con *con) { 00510 Con *current; 00511 con_state *state; 00512 Rect rect = con->rect; 00513 00514 //DLOG("Pushing changes for node %p / %s\n", con, con->name); 00515 state = state_for_frame(con->frame); 00516 00517 if (state->name != NULL) { 00518 DLOG("pushing name %s for con %p\n", state->name, con); 00519 00520 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->frame, 00521 XCB_ATOM_WM_NAME, XCB_ATOM_STRING, 8, strlen(state->name), state->name); 00522 FREE(state->name); 00523 } 00524 00525 if (con->window == NULL) { 00526 /* Calculate the height of all window decorations which will be drawn on to 00527 * this frame. */ 00528 uint32_t max_y = 0, max_height = 0; 00529 TAILQ_FOREACH(current, &(con->nodes_head), nodes) { 00530 Rect *dr = &(current->deco_rect); 00531 if (dr->y >= max_y && dr->height >= max_height) { 00532 max_y = dr->y; 00533 max_height = dr->height; 00534 } 00535 } 00536 rect.height = max_y + max_height; 00537 if (rect.height == 0) 00538 con->mapped = false; 00539 } 00540 00541 /* reparent the child window (when the window was moved due to a sticky 00542 * container) */ 00543 if (state->need_reparent && con->window != NULL) { 00544 DLOG("Reparenting child window\n"); 00545 00546 /* Temporarily set the event masks to XCB_NONE so that we won’t get 00547 * UnmapNotify events (otherwise the handler would close the container). 00548 * These events are generated automatically when reparenting. */ 00549 uint32_t values[] = { XCB_NONE }; 00550 xcb_change_window_attributes(conn, state->old_frame, XCB_CW_EVENT_MASK, values); 00551 xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values); 00552 00553 xcb_reparent_window(conn, con->window->id, con->frame, 0, 0); 00554 00555 values[0] = FRAME_EVENT_MASK; 00556 xcb_change_window_attributes(conn, state->old_frame, XCB_CW_EVENT_MASK, values); 00557 values[0] = CHILD_EVENT_MASK; 00558 xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values); 00559 00560 state->old_frame = XCB_NONE; 00561 state->need_reparent = false; 00562 00563 con->ignore_unmap++; 00564 DLOG("ignore_unmap for reparenting of con %p (win 0x%08x) is now %d\n", 00565 con, con->window->id, con->ignore_unmap); 00566 } 00567 00568 bool fake_notify = false; 00569 /* Set new position if rect changed (and if height > 0) */ 00570 if (memcmp(&(state->rect), &rect, sizeof(Rect)) != 0 && 00571 rect.height > 0) { 00572 /* We first create the new pixmap, then render to it, set it as the 00573 * background and only afterwards change the window size. This reduces 00574 * flickering. */ 00575 00576 /* As the pixmap only depends on the size and not on the position, it 00577 * is enough to check if width/height have changed. Also, we don’t 00578 * create a pixmap at all when the window is actually not visible 00579 * (height == 0). */ 00580 if ((state->rect.width != rect.width || 00581 state->rect.height != rect.height)) { 00582 if (con->pixmap == 0) { 00583 con->pixmap = xcb_generate_id(conn); 00584 con->pm_gc = xcb_generate_id(conn); 00585 } else { 00586 xcb_free_pixmap(conn, con->pixmap); 00587 xcb_free_gc(conn, con->pm_gc); 00588 } 00589 xcb_create_pixmap(conn, root_depth, con->pixmap, con->frame, rect.width, rect.height); 00590 /* For the graphics context, we disable GraphicsExposure events. 00591 * Those will be sent when a CopyArea request cannot be fulfilled 00592 * properly due to parts of the source being unmapped or otherwise 00593 * unavailable. Since we always copy from pixmaps to windows, this 00594 * is not a concern for us. */ 00595 uint32_t values[] = { 0 }; 00596 xcb_create_gc(conn, con->pm_gc, con->pixmap, XCB_GC_GRAPHICS_EXPOSURES, values); 00597 00598 con->pixmap_recreated = true; 00599 00600 /* Don’t render the decoration for windows inside a stack which are 00601 * not visible right now */ 00602 if (!con->parent || 00603 con->parent->layout != L_STACKED || 00604 TAILQ_FIRST(&(con->parent->focus_head)) == con) 00605 /* Render the decoration now to make the correct decoration visible 00606 * from the very first moment. Later calls will be cached, so this 00607 * doesn’t hurt performance. */ 00608 x_deco_recurse(con); 00609 } 00610 00611 DLOG("setting rect (%d, %d, %d, %d)\n", rect.x, rect.y, rect.width, rect.height); 00612 /* flush to ensure that the following commands are sent in a single 00613 * buffer and will be processed directly afterwards (the contents of a 00614 * window get lost when resizing it, therefore we want to provide it as 00615 * fast as possible) */ 00616 xcb_flush(conn); 00617 xcb_set_window_rect(conn, con->frame, rect); 00618 if (con->pixmap != XCB_NONE) 00619 xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height); 00620 xcb_flush(conn); 00621 00622 memcpy(&(state->rect), &rect, sizeof(Rect)); 00623 fake_notify = true; 00624 } 00625 00626 /* dito, but for child windows */ 00627 if (con->window != NULL && 00628 memcmp(&(state->window_rect), &(con->window_rect), sizeof(Rect)) != 0) { 00629 DLOG("setting window rect (%d, %d, %d, %d)\n", 00630 con->window_rect.x, con->window_rect.y, con->window_rect.width, con->window_rect.height); 00631 xcb_set_window_rect(conn, con->window->id, con->window_rect); 00632 memcpy(&(state->window_rect), &(con->window_rect), sizeof(Rect)); 00633 fake_notify = true; 00634 } 00635 00636 /* Map if map state changed, also ensure that the child window 00637 * is changed if we are mapped *and* in initial state (meaning the 00638 * container was empty before, but now got a child). Unmaps are handled in 00639 * x_push_node_unmaps(). */ 00640 if ((state->mapped != con->mapped || (con->mapped && state->initial)) && 00641 con->mapped) { 00642 xcb_void_cookie_t cookie; 00643 00644 if (con->window != NULL) { 00645 /* Set WM_STATE_NORMAL because GTK applications don’t want to 00646 * drag & drop if we don’t. Also, xprop(1) needs it. */ 00647 long data[] = { XCB_ICCCM_WM_STATE_NORMAL, XCB_NONE }; 00648 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->window->id, 00649 A_WM_STATE, A_WM_STATE, 32, 2, data); 00650 } 00651 00652 uint32_t values[1]; 00653 if (!state->child_mapped && con->window != NULL) { 00654 cookie = xcb_map_window(conn, con->window->id); 00655 00656 /* We are interested in EnterNotifys as soon as the window is 00657 * mapped */ 00658 values[0] = CHILD_EVENT_MASK; 00659 xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values); 00660 DLOG("mapping child window (serial %d)\n", cookie.sequence); 00661 state->child_mapped = true; 00662 } 00663 00664 cookie = xcb_map_window(conn, con->frame); 00665 00666 values[0] = FRAME_EVENT_MASK; 00667 xcb_change_window_attributes(conn, con->frame, XCB_CW_EVENT_MASK, values); 00668 00669 /* copy the pixmap contents to the frame window immediately after mapping */ 00670 if (con->pixmap != XCB_NONE) 00671 xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height); 00672 xcb_flush(conn); 00673 00674 DLOG("mapping container %08x (serial %d)\n", con->frame, cookie.sequence); 00675 state->mapped = con->mapped; 00676 } 00677 00678 state->unmap_now = (state->mapped != con->mapped) && !con->mapped; 00679 00680 if (fake_notify) { 00681 DLOG("Sending fake configure notify\n"); 00682 fake_absolute_configure_notify(con); 00683 } 00684 00685 /* Handle all children and floating windows of this node. We recurse 00686 * in focus order to display the focused client in a stack first when 00687 * switching workspaces (reduces flickering). */ 00688 TAILQ_FOREACH(current, &(con->focus_head), focused) 00689 x_push_node(current); 00690 } 00691 00692 /* 00693 * Same idea as in x_push_node(), but this function only unmaps windows. It is 00694 * necessary to split this up to handle new fullscreen clients properly: The 00695 * new window needs to be mapped and focus needs to be set *before* the 00696 * underlying windows are unmapped. Otherwise, focus will revert to the 00697 * PointerRoot and will then be set to the new window, generating unnecessary 00698 * FocusIn/FocusOut events. 00699 * 00700 */ 00701 static void x_push_node_unmaps(Con *con) { 00702 Con *current; 00703 con_state *state; 00704 00705 //DLOG("Pushing changes (with unmaps) for node %p / %s\n", con, con->name); 00706 state = state_for_frame(con->frame); 00707 00708 /* map/unmap if map state changed, also ensure that the child window 00709 * is changed if we are mapped *and* in initial state (meaning the 00710 * container was empty before, but now got a child) */ 00711 if (state->unmap_now) { 00712 xcb_void_cookie_t cookie; 00713 if (con->window != NULL) { 00714 /* Set WM_STATE_WITHDRAWN, it seems like Java apps need it */ 00715 long data[] = { XCB_ICCCM_WM_STATE_WITHDRAWN, XCB_NONE }; 00716 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->window->id, 00717 A_WM_STATE, A_WM_STATE, 32, 2, data); 00718 } 00719 00720 cookie = xcb_unmap_window(conn, con->frame); 00721 DLOG("unmapping container (serial %d)\n", cookie.sequence); 00722 /* we need to increase ignore_unmap for this container (if it 00723 * contains a window) and for every window "under" this one which 00724 * contains a window */ 00725 if (con->window != NULL) { 00726 con->ignore_unmap++; 00727 DLOG("ignore_unmap for con %p (frame 0x%08x) now %d\n", con, con->frame, con->ignore_unmap); 00728 } 00729 state->mapped = con->mapped; 00730 } 00731 00732 /* handle all children and floating windows of this node */ 00733 TAILQ_FOREACH(current, &(con->nodes_head), nodes) 00734 x_push_node_unmaps(current); 00735 00736 TAILQ_FOREACH(current, &(con->floating_head), floating_windows) 00737 x_push_node_unmaps(current); 00738 } 00739 00740 /* 00741 * Pushes all changes (state of each node, see x_push_node() and the window 00742 * stack) to X11. 00743 * 00744 * NOTE: We need to push the stack first so that the windows have the correct 00745 * stacking order. This is relevant for workspace switching where we map the 00746 * windows because mapping may generate EnterNotify events. When they are 00747 * generated in the wrong order, this will cause focus problems when switching 00748 * workspaces. 00749 * 00750 */ 00751 void x_push_changes(Con *con) { 00752 con_state *state; 00753 xcb_query_pointer_cookie_t pointercookie; 00754 00755 /* If we need to warp later, we request the pointer position as soon as possible */ 00756 if (warp_to) { 00757 pointercookie = xcb_query_pointer(conn, root); 00758 } 00759 00760 DLOG("-- PUSHING WINDOW STACK --\n"); 00761 //DLOG("Disabling EnterNotify\n"); 00762 uint32_t values[1] = { XCB_NONE }; 00763 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) { 00764 if (state->mapped) 00765 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values); 00766 } 00767 //DLOG("Done, EnterNotify disabled\n"); 00768 bool order_changed = false; 00769 bool stacking_changed = false; 00770 00771 /* count first, necessary to (re)allocate memory for the bottom-to-top 00772 * stack afterwards */ 00773 int cnt = 0; 00774 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) 00775 if (state->con && state->con->window) 00776 cnt++; 00777 00778 if (cnt != btt_stack_num) { 00779 btt_stack = srealloc(btt_stack, sizeof(xcb_window_t) * cnt); 00780 btt_stack_num = cnt; 00781 } 00782 00783 xcb_window_t *walk = btt_stack; 00784 00785 /* X11 correctly represents the stack if we push it from bottom to top */ 00786 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) { 00787 if (state->con && state->con->window) 00788 memcpy(walk++, &(state->con->window->id), sizeof(xcb_window_t)); 00789 00790 //DLOG("stack: 0x%08x\n", state->id); 00791 con_state *prev = CIRCLEQ_PREV(state, state); 00792 con_state *old_prev = CIRCLEQ_PREV(state, old_state); 00793 if (prev != old_prev) 00794 order_changed = true; 00795 if ((state->initial || order_changed) && prev != CIRCLEQ_END(&state_head)) { 00796 stacking_changed = true; 00797 //DLOG("Stacking 0x%08x above 0x%08x\n", prev->id, state->id); 00798 uint32_t mask = 0; 00799 mask |= XCB_CONFIG_WINDOW_SIBLING; 00800 mask |= XCB_CONFIG_WINDOW_STACK_MODE; 00801 uint32_t values[] = {state->id, XCB_STACK_MODE_ABOVE}; 00802 00803 xcb_configure_window(conn, prev->id, mask, values); 00804 } 00805 state->initial = false; 00806 } 00807 00808 /* If we re-stacked something (or a new window appeared), we need to update 00809 * the _NET_CLIENT_LIST_STACKING hint */ 00810 if (stacking_changed) 00811 ewmh_update_client_list_stacking(btt_stack, btt_stack_num); 00812 00813 DLOG("PUSHING CHANGES\n"); 00814 x_push_node(con); 00815 00816 if (warp_to) { 00817 xcb_query_pointer_reply_t *pointerreply = xcb_query_pointer_reply(conn, pointercookie, NULL); 00818 if (!pointerreply) { 00819 ELOG("Could not query pointer position, not warping pointer\n"); 00820 } else { 00821 int mid_x = warp_to->x + (warp_to->width / 2); 00822 int mid_y = warp_to->y + (warp_to->height / 2); 00823 00824 Output *current = get_output_containing(pointerreply->root_x, pointerreply->root_y); 00825 Output *target = get_output_containing(mid_x, mid_y); 00826 if (current != target) 00827 xcb_warp_pointer(conn, XCB_NONE, root, 0, 0, 0, 0, mid_x, mid_y); 00828 } 00829 warp_to = NULL; 00830 } 00831 00832 //DLOG("Re-enabling EnterNotify\n"); 00833 values[0] = FRAME_EVENT_MASK; 00834 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) { 00835 if (state->mapped) 00836 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values); 00837 } 00838 //DLOG("Done, EnterNotify re-enabled\n"); 00839 00840 x_deco_recurse(con); 00841 00842 xcb_window_t to_focus = focused->frame; 00843 if (focused->window != NULL) 00844 to_focus = focused->window->id; 00845 00846 if (focused_id != to_focus) { 00847 if (!focused->mapped) { 00848 DLOG("Not updating focus (to %p / %s), focused window is not mapped.\n", focused, focused->name); 00849 /* Invalidate focused_id to correctly focus new windows with the same ID */ 00850 focused_id = XCB_NONE; 00851 } else { 00852 bool set_focus = true; 00853 if (focused->window != NULL && 00854 focused->window->needs_take_focus) { 00855 DLOG("Updating focus by sending WM_TAKE_FOCUS to window 0x%08x (focused: %p / %s)\n", 00856 to_focus, focused, focused->name); 00857 send_take_focus(to_focus); 00858 set_focus = !focused->window->doesnt_accept_focus; 00859 DLOG("set_focus = %d\n", set_focus); 00860 } 00861 00862 if (set_focus) { 00863 DLOG("Updating focus (focused: %p / %s)\n", focused, focused->name); 00864 /* We remove XCB_EVENT_MASK_FOCUS_CHANGE from the event mask to get 00865 * no focus change events for our own focus changes. We only want 00866 * these generated by the clients. */ 00867 if (focused->window != NULL) { 00868 values[0] = CHILD_EVENT_MASK & ~(XCB_EVENT_MASK_FOCUS_CHANGE); 00869 xcb_change_window_attributes(conn, focused->window->id, XCB_CW_EVENT_MASK, values); 00870 } 00871 xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, to_focus, XCB_CURRENT_TIME); 00872 if (focused->window != NULL) { 00873 values[0] = CHILD_EVENT_MASK; 00874 xcb_change_window_attributes(conn, focused->window->id, XCB_CW_EVENT_MASK, values); 00875 } 00876 00877 ewmh_update_active_window(to_focus); 00878 } 00879 00880 focused_id = to_focus; 00881 } 00882 } 00883 00884 if (focused_id == XCB_NONE) { 00885 DLOG("Still no window focused, better set focus to the root window\n"); 00886 xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, root, XCB_CURRENT_TIME); 00887 focused_id = root; 00888 } 00889 00890 xcb_flush(conn); 00891 DLOG("ENDING CHANGES\n"); 00892 00893 /* Disable EnterWindow events for windows which will be unmapped in 00894 * x_push_node_unmaps() now. Unmapping windows happens when switching 00895 * workspaces. We want to avoid getting EnterNotifies during that phase 00896 * because they would screw up our focus. One of these cases is having a 00897 * stack with two windows. If the first window is focused and gets 00898 * unmapped, the second one appears under the cursor and therefore gets an 00899 * EnterNotify event. */ 00900 values[0] = FRAME_EVENT_MASK & ~XCB_EVENT_MASK_ENTER_WINDOW; 00901 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) { 00902 if (!state->unmap_now) 00903 continue; 00904 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values); 00905 } 00906 00907 /* Push all pending unmaps */ 00908 x_push_node_unmaps(con); 00909 00910 /* save the current stack as old stack */ 00911 CIRCLEQ_FOREACH(state, &state_head, state) { 00912 CIRCLEQ_REMOVE(&old_state_head, state, old_state); 00913 CIRCLEQ_INSERT_TAIL(&old_state_head, state, old_state); 00914 } 00915 //CIRCLEQ_FOREACH(state, &old_state_head, old_state) { 00916 // DLOG("old stack: 0x%08x\n", state->id); 00917 //} 00918 00919 xcb_flush(conn); 00920 } 00921 00922 /* 00923 * Raises the specified container in the internal stack of X windows. The 00924 * next call to x_push_changes() will make the change visible in X11. 00925 * 00926 */ 00927 void x_raise_con(Con *con) { 00928 con_state *state; 00929 state = state_for_frame(con->frame); 00930 //DLOG("raising in new stack: %p / %s / %s / xid %08x\n", con, con->name, con->window ? con->window->name_json : "", state->id); 00931 00932 CIRCLEQ_REMOVE(&state_head, state, state); 00933 CIRCLEQ_INSERT_HEAD(&state_head, state, state); 00934 } 00935 00936 /* 00937 * Sets the WM_NAME property (so, no UTF8, but used only for debugging anyways) 00938 * of the given name. Used for properly tagging the windows for easily spotting 00939 * i3 windows in xwininfo -root -all. 00940 * 00941 */ 00942 void x_set_name(Con *con, const char *name) { 00943 struct con_state *state; 00944 00945 if ((state = state_for_frame(con->frame)) == NULL) { 00946 ELOG("window state not found\n"); 00947 return; 00948 } 00949 00950 FREE(state->name); 00951 state->name = sstrdup(name); 00952 } 00953 00954 /* 00955 * Sets up i3 specific atoms (I3_SOCKET_PATH and I3_CONFIG_PATH) 00956 * 00957 */ 00958 void x_set_i3_atoms() { 00959 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_SOCKET_PATH, A_UTF8_STRING, 8, 00960 (current_socketpath == NULL ? 0 : strlen(current_socketpath)), 00961 current_socketpath); 00962 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_CONFIG_PATH, A_UTF8_STRING, 8, 00963 strlen(current_configpath), current_configpath); 00964 } 00965 00966 /* 00967 * Set warp_to coordinates. This will trigger on the next call to 00968 * x_push_changes(). 00969 * 00970 */ 00971 void x_set_warp_to(Rect *rect) 00972 { 00973 warp_to = rect; 00974 } 00975 00976 /* 00977 * Applies the given mask to the event mask of every i3 window decoration X11 00978 * window. This is useful to disable EnterNotify while resizing so that focus 00979 * is untouched. 00980 * 00981 */ 00982 void x_mask_event_mask(uint32_t mask) { 00983 uint32_t values[] = { FRAME_EVENT_MASK & mask }; 00984 00985 con_state *state; 00986 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) { 00987 if (state->mapped) 00988 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values); 00989 } 00990 }