#undef I3__FILE__ #define I3__FILE__ "floating.c" /* * vim:ts=4:sw=4:expandtab * * i3 - an improved dynamic tiling window manager * © 2009-2011 Michael Stapelberg and contributors (see also: LICENSE) * * floating.c: Floating windows. * */ #include "all.h" extern xcb_connection_t *conn; /* * Calculates sum of heights and sum of widths of all currently active outputs * */ static Rect total_outputs_dimensions(void) { Output *output; /* Use Rect to encapsulate dimensions, ignoring x/y */ Rect outputs_dimensions = {0, 0, 0, 0}; TAILQ_FOREACH(output, &outputs, outputs) { outputs_dimensions.height += output->rect.height; outputs_dimensions.width += output->rect.width; } return outputs_dimensions; } /** * Called when a floating window is created or resized. * This function resizes the window if its size is higher or lower than the * configured maximum/minimum size, respectively. * */ void floating_check_size(Con *floating_con) { /* Define reasonable minimal and maximal sizes for floating windows */ const int floating_sane_min_height = 50; const int floating_sane_min_width = 75; Rect floating_sane_max_dimensions; /* Unless user requests otherwise (-1), ensure width/height do not exceed * configured maxima or, if unconfigured, limit to combined width of all * outputs */ if (config.floating_minimum_height != -1) { if (config.floating_minimum_height == 0) floating_con->rect.height = max(floating_con->rect.height, floating_sane_min_height); else floating_con->rect.height = max(floating_con->rect.height, config.floating_minimum_height); } if (config.floating_minimum_width != -1) { if (config.floating_minimum_width == 0) floating_con->rect.width = max(floating_con->rect.width, floating_sane_min_width); else floating_con->rect.width = max(floating_con->rect.width, config.floating_minimum_width); } /* Unless user requests otherwise (-1), raise the width/height to * reasonable minimum dimensions */ floating_sane_max_dimensions = total_outputs_dimensions(); if (config.floating_maximum_height != -1) { if (config.floating_maximum_height == 0) floating_con->rect.height = min(floating_con->rect.height, floating_sane_max_dimensions.height); else floating_con->rect.height = min(floating_con->rect.height, config.floating_maximum_height); } if (config.floating_maximum_width != -1) { if (config.floating_maximum_width == 0) floating_con->rect.width = min(floating_con->rect.width, floating_sane_max_dimensions.width); else floating_con->rect.width = min(floating_con->rect.width, config.floating_maximum_width); } } void floating_enable(Con *con, bool automatic) { bool set_focus = (con == focused); if (con->parent && con->parent->type == CT_DOCKAREA) { LOG("Container is a dock window, not enabling floating mode.\n"); return; } if (con_is_floating(con)) { LOG("Container is already in floating mode, not doing anything.\n"); return; } /* 1: If the container is a workspace container, we need to create a new * split-container with the same layout and make that one floating. We * cannot touch the workspace container itself because floating containers * are children of the workspace. */ if (con->type == CT_WORKSPACE) { LOG("This is a workspace, creating new container around content\n"); if (con_num_children(con) == 0) { LOG("Workspace is empty, aborting\n"); return; } /* TODO: refactor this with src/con.c:con_set_layout */ Con *new = con_new(NULL, NULL); new->parent = con; new->layout = con->layout; /* since the new container will be set into floating mode directly * afterwards, we need to copy the workspace rect. */ memcpy(&(new->rect), &(con->rect), sizeof(Rect)); Con *old_focused = TAILQ_FIRST(&(con->focus_head)); if (old_focused == TAILQ_END(&(con->focus_head))) old_focused = NULL; /* 4: move the existing cons of this workspace below the new con */ DLOG("Moving cons\n"); Con *child; while (!TAILQ_EMPTY(&(con->nodes_head))) { child = TAILQ_FIRST(&(con->nodes_head)); con_detach(child); con_attach(child, new, true); } /* 4: attach the new split container to the workspace */ DLOG("Attaching new split to ws\n"); con_attach(new, con, false); if (old_focused) con_focus(old_focused); con = new; set_focus = false; } /* 1: detach the container from its parent */ /* TODO: refactor this with tree_close() */ TAILQ_REMOVE(&(con->parent->nodes_head), con, nodes); TAILQ_REMOVE(&(con->parent->focus_head), con, focused); con_fix_percent(con->parent); /* 2: create a new container to render the decoration on, add * it as a floating window to the workspace */ Con *nc = con_new(NULL, NULL); /* we need to set the parent afterwards instead of passing it as an * argument to con_new() because nc would be inserted into the tiling layer * otherwise. */ Con *ws = con_get_workspace(con); nc->parent = ws; nc->type = CT_FLOATING_CON; nc->layout = L_SPLITH; /* We insert nc already, even though its rect is not yet calculated. This * is necessary because otherwise the workspace might be empty (and get * closed in tree_close()) even though it’s not. */ TAILQ_INSERT_TAIL(&(ws->floating_head), nc, floating_windows); TAILQ_INSERT_TAIL(&(ws->focus_head), nc, focused); /* check if the parent container is empty and close it if so */ if ((con->parent->type == CT_CON || con->parent->type == CT_FLOATING_CON) && con_num_children(con->parent) == 0) { DLOG("Old container empty after setting this child to floating, closing\n"); tree_close(con->parent, DONT_KILL_WINDOW, false, false); } char *name; sasprintf(&name, "[i3 con] floatingcon around %p", con); x_set_name(nc, name); free(name); /* find the height for the decorations */ int deco_height = config.font.height + 5; DLOG("Original rect: (%d, %d) with %d x %d\n", con->rect.x, con->rect.y, con->rect.width, con->rect.height); DLOG("Geometry = (%d, %d) with %d x %d\n", con->geometry.x, con->geometry.y, con->geometry.width, con->geometry.height); Rect zero = { 0, 0, 0, 0 }; nc->rect = con->geometry; /* If the geometry was not set (split containers), we need to determine a * sensible one by combining the geometry of all children */ if (memcmp(&(nc->rect), &zero, sizeof(Rect)) == 0) { DLOG("Geometry not set, combining children\n"); Con *child; TAILQ_FOREACH(child, &(con->nodes_head), nodes) { DLOG("child geometry: %d x %d\n", child->geometry.width, child->geometry.height); nc->rect.width += child->geometry.width; nc->rect.height = max(nc->rect.height, child->geometry.height); } } floating_check_size(nc); /* 3: attach the child to the new parent container. We need to do this * because con_border_style_rect() needs to access con->parent. */ con->parent = nc; con->percent = 1.0; con->floating = FLOATING_USER_ON; /* 4: set the border style as specified with new_float */ if (automatic) con->border_style = config.default_floating_border; /* Add pixels for the decoration. */ Rect border_style_rect = con_border_style_rect(con); nc->rect.height -= border_style_rect.height; nc->rect.width -= border_style_rect.width; /* Add some more pixels for the title bar */ if(con_border_style(con) == BS_NORMAL) nc->rect.height += deco_height; /* Honor the X11 border */ nc->rect.height += con->border_width * 2; nc->rect.width += con->border_width * 2; /* Some clients (like GIMP’s color picker window) get mapped * to (0, 0), so we push them to a reasonable position * (centered over their leader) */ if (nc->rect.x == 0 && nc->rect.y == 0) { Con *leader; if (con->window && con->window->leader != XCB_NONE && (leader = con_by_window_id(con->window->leader)) != NULL) { DLOG("Centering above leader\n"); nc->rect.x = leader->rect.x + (leader->rect.width / 2) - (nc->rect.width / 2); nc->rect.y = leader->rect.y + (leader->rect.height / 2) - (nc->rect.height / 2); } else { /* center the window on workspace as fallback */ nc->rect.x = ws->rect.x + (ws->rect.width / 2) - (nc->rect.width / 2); nc->rect.y = ws->rect.y + (ws->rect.height / 2) - (nc->rect.height / 2); } } /* Sanity check: Are the coordinates on the appropriate output? If not, we * need to change them */ Output *current_output = get_output_containing(nc->rect.x + (nc->rect.width / 2), nc->rect.y + (nc->rect.height / 2)); Con *correct_output = con_get_output(ws); if (!current_output || current_output->con != correct_output) { DLOG("This floating window is on the wrong output, fixing coordinates (currently (%d, %d))\n", nc->rect.x, nc->rect.y); /* If moving from one output to another, keep the relative position * consistent (e.g. a centered dialog will remain centered). */ if (current_output) floating_fix_coordinates(nc, ¤t_output->con->rect, &correct_output->rect); else { nc->rect.x = correct_output->rect.x; nc->rect.y = correct_output->rect.y; } } DLOG("Floating rect: (%d, %d) with %d x %d\n", nc->rect.x, nc->rect.y, nc->rect.width, nc->rect.height); /* 5: Subtract the deco_height in order to make the floating window appear * at precisely the position it specified in its original geometry (which * is what applications might remember). */ deco_height = (con->border_style == BS_NORMAL ? config.font.height + 5 : 0); nc->rect.y -= deco_height; DLOG("Corrected y = %d (deco_height = %d)\n", nc->rect.y, deco_height); TAILQ_INSERT_TAIL(&(nc->nodes_head), con, nodes); TAILQ_INSERT_TAIL(&(nc->focus_head), con, focused); /* render the cons to get initial window_rect correct */ render_con(nc, false); render_con(con, false); if (set_focus) con_focus(con); /* Check if we need to re-assign it to a different workspace because of its * coordinates and exit if that was done successfully. */ if (floating_maybe_reassign_ws(nc)) return; /* Sanitize coordinates: Check if they are on any output */ if (get_output_containing(nc->rect.x, nc->rect.y) != NULL) return; ELOG("No output found at destination coordinates, centering floating window on current ws\n"); nc->rect.x = ws->rect.x + (ws->rect.width / 2) - (nc->rect.width / 2); nc->rect.y = ws->rect.y + (ws->rect.height / 2) - (nc->rect.height / 2); } void floating_disable(Con *con, bool automatic) { if (!con_is_floating(con)) { LOG("Container isn't floating, not doing anything.\n"); return; } Con *ws = con_get_workspace(con); /* 1: detach from parent container */ TAILQ_REMOVE(&(con->parent->nodes_head), con, nodes); TAILQ_REMOVE(&(con->parent->focus_head), con, focused); /* 2: kill parent container */ TAILQ_REMOVE(&(con->parent->parent->floating_head), con->parent, floating_windows); TAILQ_REMOVE(&(con->parent->parent->focus_head), con->parent, focused); tree_close(con->parent, DONT_KILL_WINDOW, true, false); /* 3: re-attach to the parent of the currently focused con on the workspace * this floating con was on */ Con *focused = con_descend_tiling_focused(ws); /* if there is no other container on this workspace, focused will be the * workspace itself */ if (focused->type == CT_WORKSPACE) con->parent = focused; else con->parent = focused->parent; /* con_fix_percent will adjust the percent value */ con->percent = 0.0; con->floating = FLOATING_USER_OFF; con_attach(con, con->parent, false); con_fix_percent(con->parent); // TODO: don’t influence focus handling when Con was not focused before. con_focus(con); } /* * Toggles floating mode for the given container. * * If the automatic flag is set to true, this was an automatic update by a change of the * window class from the application which can be overwritten by the user. * */ void toggle_floating_mode(Con *con, bool automatic) { /* see if the client is already floating */ if (con_is_floating(con)) { LOG("already floating, re-setting to tiling\n"); floating_disable(con, automatic); return; } floating_enable(con, automatic); } /* * Raises the given container in the list of floating containers * */ void floating_raise_con(Con *con) { DLOG("Raising floating con %p / %s\n", con, con->name); TAILQ_REMOVE(&(con->parent->floating_head), con, floating_windows); TAILQ_INSERT_TAIL(&(con->parent->floating_head), con, floating_windows); } /* * Checks if con’s coordinates are within its workspace and re-assigns it to * the actual workspace if not. * */ bool floating_maybe_reassign_ws(Con *con) { Output *output = get_output_containing( con->rect.x + (con->rect.width / 2), con->rect.y + (con->rect.height / 2)); if (!output) { ELOG("No output found at destination coordinates?\n"); return false; } if (con_get_output(con) == output->con) { DLOG("still the same ws\n"); return false; } DLOG("Need to re-assign!\n"); Con *content = output_get_content(output->con); Con *ws = TAILQ_FIRST(&(content->focus_head)); DLOG("Moving con %p / %s to workspace %p / %s\n", con, con->name, ws, ws->name); con_move_to_workspace(con, ws, false, true); con_focus(con_descend_focused(con)); return true; } DRAGGING_CB(drag_window_callback) { const struct xcb_button_press_event_t *event = extra; /* Reposition the client correctly while moving */ con->rect.x = old_rect->x + (new_x - event->root_x); con->rect.y = old_rect->y + (new_y - event->root_y); render_con(con, false); x_push_node(con); xcb_flush(conn); /* Check if we cross workspace boundaries while moving */ if (!floating_maybe_reassign_ws(con)) return; tree_render(); } /* * Called when the user clicked on the titlebar of a floating window. * Calls the drag_pointer function with the drag_window callback * */ void floating_drag_window(Con *con, const xcb_button_press_event_t *event) { DLOG("floating_drag_window\n"); /* Push changes before dragging, so that the window gets raised now and not * after the user releases the mouse button */ tree_render(); /* Drag the window */ drag_pointer(con, event, XCB_NONE, BORDER_TOP /* irrelevant */, XCURSOR_CURSOR_MOVE, drag_window_callback, event); tree_render(); } /* * This is an ugly data structure which we need because there is no standard * way of having nested functions (only available as a gcc extension at the * moment, clang doesn’t support it) or blocks (only available as a clang * extension and only on Mac OS X systems at the moment). * */ struct resize_window_callback_params { const border_t corner; const bool proportional; const xcb_button_press_event_t *event; }; DRAGGING_CB(resize_window_callback) { const struct resize_window_callback_params *params = extra; const xcb_button_press_event_t *event = params->event; border_t corner = params->corner; int32_t dest_x = con->rect.x; int32_t dest_y = con->rect.y; uint32_t dest_width; uint32_t dest_height; double ratio = (double) old_rect->width / old_rect->height; /* First guess: We resize by exactly the amount the mouse moved, * taking into account in which corner the client was grabbed */ if (corner & BORDER_LEFT) dest_width = old_rect->width - (new_x - event->root_x); else dest_width = old_rect->width + (new_x - event->root_x); if (corner & BORDER_TOP) dest_height = old_rect->height - (new_y - event->root_y); else dest_height = old_rect->height + (new_y - event->root_y); /* Obey minimum window size */ Rect minimum = con_minimum_size(con); dest_width = max(dest_width, minimum.width); dest_height = max(dest_height, minimum.height); /* User wants to keep proportions, so we may have to adjust our values */ if (params->proportional) { dest_width = max(dest_width, (int) (dest_height * ratio)); dest_height = max(dest_height, (int) (dest_width / ratio)); } /* If not the lower right corner is grabbed, we must also reposition * the client by exactly the amount we resized it */ if (corner & BORDER_LEFT) dest_x = old_rect->x + (old_rect->width - dest_width); if (corner & BORDER_TOP) dest_y = old_rect->y + (old_rect->height - dest_height); con->rect = (Rect) { dest_x, dest_y, dest_width, dest_height }; /* TODO: don’t re-render the whole tree just because we change * coordinates of a floating window */ tree_render(); x_push_changes(croot); } /* * Called when the user clicked on a floating window while holding the * floating_modifier and the right mouse button. * Calls the drag_pointer function with the resize_window callback * */ void floating_resize_window(Con *con, const bool proportional, const xcb_button_press_event_t *event) { DLOG("floating_resize_window\n"); /* corner saves the nearest corner to the original click. It contains * a bitmask of the nearest borders (BORDER_LEFT, BORDER_RIGHT, …) */ border_t corner = 0; if (event->event_x <= (con->rect.width / 2)) corner |= BORDER_LEFT; else corner |= BORDER_RIGHT; int cursor = 0; if (event->event_y <= (con->rect.height / 2)) { corner |= BORDER_TOP; cursor = (corner & BORDER_LEFT) ? XCURSOR_CURSOR_TOP_LEFT_CORNER : XCURSOR_CURSOR_TOP_RIGHT_CORNER; } else { corner |= BORDER_BOTTOM; cursor = (corner & BORDER_LEFT) ? XCURSOR_CURSOR_BOTTOM_LEFT_CORNER : XCURSOR_CURSOR_BOTTOM_RIGHT_CORNER; } struct resize_window_callback_params params = { corner, proportional, event }; drag_pointer(con, event, XCB_NONE, BORDER_TOP /* irrelevant */, cursor, resize_window_callback, ¶ms); } /* * This function grabs your pointer and lets you drag stuff around (borders). * Every time you move your mouse, an XCB_MOTION_NOTIFY event will be received * and the given callback will be called with the parameters specified (client, * border on which the click originally was), the original rect of the client, * the event and the new coordinates (x, y). * */ void drag_pointer(Con *con, const xcb_button_press_event_t *event, xcb_window_t confine_to, border_t border, int cursor, callback_t callback, const void *extra) { uint32_t new_x, new_y; Rect old_rect = { 0, 0, 0, 0 }; if (con != NULL) memcpy(&old_rect, &(con->rect), sizeof(Rect)); Cursor xcursor = (cursor && xcursor_supported) ? xcursor_get_cursor(cursor) : XCB_NONE; /* Grab the pointer */ xcb_grab_pointer_cookie_t cookie; xcb_grab_pointer_reply_t *reply; cookie = xcb_grab_pointer(conn, false, /* get all pointer events specified by the following mask */ root, /* grab the root window */ XCB_EVENT_MASK_BUTTON_RELEASE | XCB_EVENT_MASK_POINTER_MOTION, /* which events to let through */ XCB_GRAB_MODE_ASYNC, /* pointer events should continue as normal */ XCB_GRAB_MODE_ASYNC, /* keyboard mode */ confine_to, /* confine_to = in which window should the cursor stay */ xcursor, /* possibly display a special cursor */ XCB_CURRENT_TIME); if ((reply = xcb_grab_pointer_reply(conn, cookie, NULL)) == NULL) { ELOG("Could not grab pointer\n"); return; } free(reply); /* Go into our own event loop */ xcb_flush(conn); xcb_generic_event_t *inside_event, *last_motion_notify = NULL; bool loop_done = false; /* I’ve always wanted to have my own eventhandler… */ while (!loop_done && (inside_event = xcb_wait_for_event(conn))) { /* We now handle all events we can get using xcb_poll_for_event */ do { /* skip x11 errors */ if (inside_event->response_type == 0) { free(inside_event); continue; } /* Strip off the highest bit (set if the event is generated) */ int type = (inside_event->response_type & 0x7F); switch (type) { case XCB_BUTTON_RELEASE: loop_done = true; break; case XCB_MOTION_NOTIFY: /* motion_notify events are saved for later */ FREE(last_motion_notify); last_motion_notify = inside_event; break; case XCB_UNMAP_NOTIFY: case XCB_KEY_PRESS: case XCB_KEY_RELEASE: DLOG("Unmap-notify, aborting\n"); handle_event(type, inside_event); loop_done = true; break; default: DLOG("Passing to original handler\n"); /* Use original handler */ handle_event(type, inside_event); break; } if (last_motion_notify != inside_event) free(inside_event); } while ((inside_event = xcb_poll_for_event(conn)) != NULL); if (last_motion_notify == NULL || loop_done) continue; new_x = ((xcb_motion_notify_event_t*)last_motion_notify)->root_x; new_y = ((xcb_motion_notify_event_t*)last_motion_notify)->root_y; callback(con, &old_rect, new_x, new_y, extra); FREE(last_motion_notify); } xcb_ungrab_pointer(conn, XCB_CURRENT_TIME); xcb_flush(conn); } /* * Repositions the CT_FLOATING_CON to have the coordinates specified by * newrect, but only if the coordinates are not out-of-bounds. Also reassigns * the floating con to a different workspace if this move was across different * outputs. * */ void floating_reposition(Con *con, Rect newrect) { /* Sanity check: Are the new coordinates on any output? If not, we * ignore that request. */ Output *output = get_output_containing( newrect.x + (newrect.width / 2), newrect.y + (newrect.height / 2)); if (!output) { ELOG("No output found at destination coordinates. Not repositioning.\n"); return; } con->rect = newrect; floating_maybe_reassign_ws(con); tree_render(); } /* * Fixes the coordinates of the floating window whenever the window gets * reassigned to a different output (or when the output’s rect changes). * */ void floating_fix_coordinates(Con *con, Rect *old_rect, Rect *new_rect) { DLOG("Fixing coordinates of floating window %p (rect (%d, %d), %d x %d)\n", con, con->rect.x, con->rect.y, con->rect.width, con->rect.height); DLOG("old_rect = (%d, %d), %d x %d\n", old_rect->x, old_rect->y, old_rect->width, old_rect->height); DLOG("new_rect = (%d, %d), %d x %d\n", new_rect->x, new_rect->y, new_rect->width, new_rect->height); /* First we get the x/y coordinates relative to the x/y coordinates * of the output on which the window is on */ int32_t rel_x = con->rect.x - old_rect->x + (int32_t)(con->rect.width / 2); int32_t rel_y = con->rect.y - old_rect->y + (int32_t)(con->rect.height / 2); /* Then we calculate a fraction, for example 0.63 for a window * which is at y = 1212 of a 1920 px high output */ DLOG("rel_x = %d, rel_y = %d, fraction_x = %f, fraction_y = %f, output->w = %d, output->h = %d\n", rel_x, rel_y, (double)rel_x / old_rect->width, (double)rel_y / old_rect->height, old_rect->width, old_rect->height); /* Here we have to multiply at first. Or we will lose precision when not compiled with -msse2 */ con->rect.x = (int32_t)new_rect->x + (double)(rel_x * (int32_t)new_rect->width) / (int32_t)old_rect->width - (int32_t)(con->rect.width / 2); con->rect.y = (int32_t)new_rect->y + (double)(rel_y * (int32_t)new_rect->height) / (int32_t)old_rect->height - (int32_t)(con->rect.height / 2); DLOG("Resulting coordinates: x = %d, y = %d\n", con->rect.x, con->rect.y); } #if 0 /* * Moves the client 10px to the specified direction. * */ void floating_move(xcb_connection_t *conn, Client *currently_focused, direction_t direction) { DLOG("floating move\n"); Rect destination = currently_focused->rect; Rect *screen = &(currently_focused->workspace->output->rect); switch (direction) { case D_LEFT: destination.x -= 10; break; case D_RIGHT: destination.x += 10; break; case D_UP: destination.y -= 10; break; case D_DOWN: destination.y += 10; break; /* to make static analyzers happy */ default: break; } /* Prevent windows from vanishing completely */ if ((int32_t)(destination.x + destination.width - 5) <= (int32_t)screen->x || (int32_t)(destination.x + 5) >= (int32_t)(screen->x + screen->width) || (int32_t)(destination.y + destination.height - 5) <= (int32_t)screen->y || (int32_t)(destination.y + 5) >= (int32_t)(screen->y + screen->height)) { DLOG("boundary check failed, not moving\n"); return; } currently_focused->rect = destination; reposition_client(conn, currently_focused); /* Because reposition_client does not send a faked configure event (only resize does), * we need to initiate that on our own */ fake_absolute_configure_notify(conn, currently_focused); /* fake_absolute_configure_notify flushes */ } /* * Hides all floating clients (or show them if they are currently hidden) on * the specified workspace. * */ void floating_toggle_hide(xcb_connection_t *conn, Workspace *workspace) { Client *client; workspace->floating_hidden = !workspace->floating_hidden; DLOG("floating_hidden is now: %d\n", workspace->floating_hidden); TAILQ_FOREACH(client, &(workspace->floating_clients), floating_clients) { if (workspace->floating_hidden) client_unmap(conn, client); else client_map(conn, client); } /* If we just unmapped all floating windows we should ensure that the focus * is set correctly, that ist, to the first non-floating client in stack */ if (workspace->floating_hidden) SLIST_FOREACH(client, &(workspace->focus_stack), focus_clients) { if (client_is_floating(client)) continue; set_focus(conn, client, true); return; } xcb_flush(conn); } #endif