/* * mcwm, a small window manager for the X Window System using the X * protocol C Binding libraries. * * For 'user' configurable stuff, see config.h. * * MC, mc at the domain hack.org * http://hack.org/mc/ * * Copyright (c) 2010 Michael Cardell Widerkrantz, mc at the domain hack.org. * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include #include #include #include #include #include #include #include #include #include #include #include /* Check here for user configurable parts: */ #include "config.h" #ifdef DMALLOC #include "dmalloc.h" #endif #ifdef DEBUG #define PDEBUG(Args...) \ do { fprintf(stderr, "mcwm: "); fprintf(stderr, ##Args); } while(0) #define D(x) x #else #define PDEBUG(Args...) #define D(x) #endif /* Internal Constants. */ #define MCWM_MOVE 2 #define MCWM_RESIZE 3 /* Types. */ typedef enum { KEY_H, KEY_J, KEY_K, KEY_L, KEY_M, KEY_R, KEY_RET, KEY_X, KEY_TAB, KEY_MAX } key_enum_t; /* Globals */ xcb_connection_t *conn; /* Connection to X server. */ xcb_screen_t *screen; /* Our current screen. */ char *terminal = TERMINAL; /* Path to terminal to start. */ xcb_drawable_t focuswin; /* Current focus window. */ struct keys { xcb_keysym_t keysym; xcb_keycode_t keycode; } keys[KEY_MAX] = { { USERKEY_MOVE_LEFT, 0 }, { USERKEY_MOVE_DOWN, 0 }, { USERKEY_MOVE_UP, 0 }, { USERKEY_MOVE_RIGHT, 0 }, { USERKEY_MAXVERT, 0 }, { USERKEY_RAISE, 0 }, { USERKEY_TERMINAL, 0 }, { USERKEY_MAX, 0 }, { USERKEY_CHANGE, 0 } }; struct conf { bool borders; } conf; /* Functions declerations. */ void newwin(xcb_window_t win); void setupwin(xcb_window_t win); xcb_keycode_t keysymtokeycode(xcb_keysym_t keysym, xcb_key_symbols_t *keysyms); int setupkeys(void); int setupscreen(void); void raisewindow(xcb_drawable_t win); void raiseorlower(xcb_drawable_t win); void movewindow(xcb_drawable_t win, uint16_t x, uint16_t y); void setunfocus(xcb_drawable_t win); void setfocus(xcb_drawable_t win); int start_terminal(void); void resize(xcb_drawable_t win, uint32_t width, uint32_t height); void resizestep(xcb_drawable_t win, char direction); void mousemove(xcb_drawable_t win, int rel_x, int rel_y); void mouseresize(xcb_drawable_t win, int rel_x, int rel_y); void movestep(xcb_drawable_t win, char direction); void maximize(xcb_drawable_t win); void maxvert(xcb_drawable_t win); void handle_keypress(xcb_drawable_t win, xcb_key_press_event_t *ev); /* Function bodies. */ /* * Set position, geometry and attributes of a new window and show it * on the screen. */ void newwin(xcb_window_t win) { xcb_query_pointer_reply_t *pointer; xcb_get_geometry_reply_t *geom; int x; int y; int32_t width; int32_t height; /* Get pointer position so we can move the window to the cursor. */ pointer = xcb_query_pointer_reply( conn, xcb_query_pointer(conn, screen->root), 0); if (NULL == pointer) { x = 0; y = 0; } else { x = pointer->root_x; y = pointer->root_y; free(pointer); } /* * Get window geometry so we can check if it fits on the screen * where the cursor is. */ geom = xcb_get_geometry_reply(conn, xcb_get_geometry(conn, win), NULL); if (NULL == geom) { return; } width = geom->width; height = geom->height; /* FIXME: XCB_SIZE_HINT_BASE_SIZE */ /* * If the window is larger than our screen, just place it in the * corner and resize. */ if (width > screen->width_in_pixels) { x = 0; width = screen->width_in_pixels - BORDERWIDTH * 2;; resize(win, width, height); } else if (x + width + BORDERWIDTH * 2 > screen->width_in_pixels) { x = screen->width_in_pixels - (width + BORDERWIDTH * 2); } if (height > screen->height_in_pixels) { y = 0; height = screen->height_in_pixels - BORDERWIDTH * 2; resize(win, width, height); } else if (y + height + BORDERWIDTH * 2 > screen->height_in_pixels) { y = screen->height_in_pixels - (height + BORDERWIDTH * 2); } /* Move the window to cursor position. */ movewindow(win, x, y); /* Set up stuff and raise the window. */ setupwin(win); raisewindow(win); /* Show window on screen. */ xcb_map_window(conn, win); /* * Move cursor into the middle of the window so we don't lose the * pointer to another window. */ xcb_warp_pointer(conn, XCB_NONE, win, 0, 0, 0, 0, geom->width / 2, geom->height / 2); free(geom); xcb_flush(conn); } /* set border colour, width and event mask for window. */ void setupwin(xcb_window_t win) { uint32_t mask = 0; uint32_t values[2]; if (conf.borders) { /* Set border color. */ values[0] = UNFOCUSCOL; xcb_change_window_attributes(conn, win, XCB_CW_BORDER_PIXEL, values); /* Set border width. */ values[0] = BORDERWIDTH; mask = XCB_CONFIG_WINDOW_BORDER_WIDTH; xcb_configure_window(conn, win, mask, values); } mask = XCB_CW_EVENT_MASK; values[0] = XCB_EVENT_MASK_ENTER_WINDOW; xcb_change_window_attributes_checked(conn, win, mask, values); /* FIXME: set properties. */ xcb_flush(conn); } xcb_keycode_t keysymtokeycode(xcb_keysym_t keysym, xcb_key_symbols_t *keysyms) { xcb_keycode_t *keyp; xcb_keycode_t key; /* We only use the first keysymbol, even if there are more. */ keyp = xcb_key_symbols_get_keycode(keysyms, keysym); if (NULL == keyp) { fprintf(stderr, "mcwm: Couldn't look up key. Exiting.\n"); exit(1); return 0; } key = *keyp; free(keyp); return key; } int setupkeys(void) { xcb_key_symbols_t *keysyms; int i; /* Get all the keysymbols. */ keysyms = xcb_key_symbols_alloc(conn); for (i = KEY_H; i < KEY_MAX; i ++) { keys[i].keycode = keysymtokeycode(keys[i].keysym, keysyms); if (0 == keys[i].keycode) { /* Couldn't set up keys! */ /* Get rid of key symbols. */ free(keysyms); return -1; } } /* Get rid of the key symbols table. */ free(keysyms); return 0; } /* Walk through all existing windows and set them up. */ int setupscreen(void) { xcb_query_tree_reply_t *reply; xcb_query_pointer_reply_t *pointer; int i; int len; xcb_window_t *children; /* Get all children. */ reply = xcb_query_tree_reply(conn, xcb_query_tree(conn, screen->root), 0); if (NULL == reply) { return -1; } len = xcb_query_tree_children_length(reply); children = xcb_query_tree_children(reply); /* Set up all windows. */ for (i = 0; i < len; i ++) { setupwin(children[i]); } /* * Get pointer position so we can set focus on any window which * might be under it. */ pointer = xcb_query_pointer_reply( conn, xcb_query_pointer(conn, screen->root), 0); if (NULL == pointer) { focuswin = screen->root; } else { setfocus(pointer->child); free(pointer); } xcb_flush(conn); free(reply); return 0; } void raisewindow(xcb_drawable_t win) { uint32_t values[] = { XCB_STACK_MODE_ABOVE }; if (screen->root == win || 0 == win) { return; } xcb_configure_window(conn, win, XCB_CONFIG_WINDOW_STACK_MODE, values); xcb_flush(conn); } void raiseorlower(xcb_drawable_t win) { uint32_t values[] = { XCB_STACK_MODE_OPPOSITE }; if (screen->root == win || 0 == win) { return; } xcb_configure_window(conn, win, XCB_CONFIG_WINDOW_STACK_MODE, values); xcb_flush(conn); } void movewindow(xcb_drawable_t win, uint16_t x, uint16_t y) { uint32_t values[2]; if (screen->root == win || 0 == win) { /* Can't move root. */ return; } values[0] = x; values[1] = y; xcb_configure_window(conn, win, XCB_CONFIG_WINDOW_X | XCB_CONFIG_WINDOW_Y, values); xcb_flush(conn); } void setunfocus(xcb_drawable_t win) { uint32_t values[1]; if (focuswin == screen->root || !conf.borders) { return; } /* Set new border colour. */ values[0] = UNFOCUSCOL; xcb_change_window_attributes(conn, win, XCB_CW_BORDER_PIXEL, values); xcb_flush(conn); } void setfocus(xcb_drawable_t win) { uint32_t values[1]; /* * Don't bother focusing on the root window or on the same window * that already has focus. */ if (win == screen->root || win == focuswin) { return; } if (conf.borders) { /* Set new border colour. */ values[0] = FOCUSCOL; xcb_change_window_attributes(conn, win, XCB_CW_BORDER_PIXEL, values); /* Unset last focus. */ setunfocus(focuswin); } /* Set new input focus. */ focuswin = win; xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, win, XCB_CURRENT_TIME); xcb_flush(conn); } int start_terminal(void) { pid_t pid; pid = fork(); if (-1 == pid) { perror("fork"); return -1; } else if (0 == pid) { char *argv[2]; /* In the child. */ argv[0] = terminal; argv[1] = NULL; /* * Create new process leader, otherwise the terminal will die * when wm dies. */ if (-1 == setsid()) { perror("setsid"); exit(1); } if (-1 == execvp(terminal, argv)) { perror("execve"); exit(1); } } return 0; } void resize(xcb_drawable_t win, uint32_t width, uint32_t height) { uint32_t values[2]; if (screen->root == win || 0 == win) { /* Can't resize root. */ return; } values[0] = width; values[1] = height; xcb_configure_window(conn, win, XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT, values); xcb_flush(conn); } void resizestep(xcb_drawable_t win, char direction) { xcb_get_geometry_reply_t *geom; int width; int height; xcb_size_hints_t hints; int step_x = MOVE_STEP; int step_y = MOVE_STEP; if (0 == win) { /* Can't resize root. */ return; } raisewindow(win); /* Get window geometry. */ geom = xcb_get_geometry_reply(conn, xcb_get_geometry(conn, win), NULL); if (NULL == geom) { return; } /* * Get the window's incremental size step, if any, and use that * when resizing. */ if (!xcb_get_wm_normal_hints_reply( conn, xcb_get_wm_normal_hints_unchecked( conn, win), &hints, NULL)) { PDEBUG("Couldn't get size hints."); } if (hints.flags & XCB_SIZE_HINT_P_RESIZE_INC) { if (0 == hints.width_inc || 0 == hints.height_inc) { PDEBUG("Client lied. No size inc hints.\n"); step_x = 1; step_y = 1; } else { step_x = hints.width_inc; step_y = hints.height_inc; } } switch (direction) { case 'h': width = geom->width - step_x; height = geom->height; if (width < 0) { width = 0; } break; case 'j': width = geom->width; height = geom->height + step_y; if (height + geom->y > screen->height_in_pixels) { goto bad; } break; case 'k': width = geom->width; height = geom->height - step_y; if (height < 0) { goto bad; } break; case 'l': width = geom->width + step_x; height = geom->height; if (width + geom->x > screen->width_in_pixels) { goto bad; } break; default: PDEBUG("resizestep in unknown direction.\n"); break; } /* switch direction */ resize(win, width, height); /* * Move cursor into the middle of the window so we don't lose the * pointer to another window. */ xcb_warp_pointer(conn, XCB_NONE, win, 0, 0, 0, 0, width / 2, height / 2); xcb_flush(conn); bad: free(geom); } void mousemove(xcb_drawable_t win, int rel_x, int rel_y) { xcb_get_geometry_reply_t *geom; int x; int y; /* Get window geometry. */ geom = xcb_get_geometry_reply(conn, xcb_get_geometry(conn, win), NULL); if (NULL == geom) { return; } x = rel_x; y = rel_y; if (x < BORDERWIDTH) { x = BORDERWIDTH; } if (y < BORDERWIDTH) { y = BORDERWIDTH; } if (y + geom->height + BORDERWIDTH * 2 > screen->height_in_pixels) { y = screen->height_in_pixels - (geom->height + BORDERWIDTH * 2); } if (x + geom->width + BORDERWIDTH * 2 > screen->width_in_pixels) { x = screen->width_in_pixels - (geom->width + BORDERWIDTH * 2); } movewindow(win, x, y); free(geom); } void mouseresize(xcb_drawable_t win, int rel_x, int rel_y) { xcb_get_geometry_reply_t *geom; xcb_size_hints_t hints; uint32_t width; uint32_t height; uint32_t width_inc = 1; uint32_t height_inc = 1; raisewindow(win); /* Get window geometry. */ geom = xcb_get_geometry_reply(conn, xcb_get_geometry(conn, win), NULL); if (NULL == geom) { return; } if (rel_x - geom->x <= 1) { return; } if (rel_y - geom->y <= 1) { return; } width = rel_x - geom->x; height = rel_y - geom->y; /* * Get the window's incremental size step, if any, and use that * when resizing. * * FIXME: Do this right. ICCCM v2.0, 4.1.2.3. WM_NORMAL_HINTS * Property says: * * The base_width and base_height elements in conjunction with * width_inc and height_inc define an arithmetic progression of * preferred window widths and heights for nonnegative integers * i and j: * * width = base_width + (i × width_inc) * height = base_height + (j × height_inc) * * Window managers are encouraged to use i and j instead of * width and height in reporting window sizes to users. If a * base size is not provided, the minimum size is to be used in * its place and vice versa. */ if (!xcb_get_wm_normal_hints_reply( conn, xcb_get_wm_normal_hints_unchecked(conn, win), &hints, NULL)) { PDEBUG("Couldn't get size hints."); } if (hints.flags & XCB_SIZE_HINT_P_RESIZE_INC) { if (0 == hints.width_inc || 0 == hints.height_inc) { PDEBUG("The client lied. There is no resize inc here.\n"); hints.width_inc = 1; hints.height_inc = 1; } else { width_inc = hints.width_inc; height_inc = hints.height_inc; if (0 != width % width_inc) { width -= width % width_inc; } if (0 != height % height_inc) { height -= height % height_inc; } } } if (width > screen->width_in_pixels) { width = (screen->width_in_pixels - geom->x) / width_inc; } if (height > screen->height_in_pixels) { height = (screen->height_in_pixels - geom->y) / height_inc; } PDEBUG("Resizing to %dx%d (%dx%d)\n", width, height, width / width_inc, height / height_inc); resize(win, width, height); free(geom); } void movestep(xcb_drawable_t win, char direction) { xcb_get_geometry_reply_t *geom; int x; int y; int width; int height; if (0 == win) { /* Can't move root. */ return; } raisewindow(win); /* Get window geometry. */ geom = xcb_get_geometry_reply(conn, xcb_get_geometry(conn, win), NULL); width = geom->width + BORDERWIDTH * 2; height = geom->height + BORDERWIDTH * 2; if (NULL == geom) { return; } switch (direction) { case 'h': x = geom->x - MOVE_STEP; if (x < 0) { x = 0; } movewindow(win, x, geom->y); break; case 'j': y = geom->y + MOVE_STEP; if (y + height > screen->height_in_pixels) { y = screen->height_in_pixels - height; } movewindow(win, geom->x, y); break; case 'k': y = geom->y - MOVE_STEP; if (y < 0) { y = 0; } movewindow(win, geom->x, y); break; case 'l': x = geom->x + MOVE_STEP; if (x + width > screen->width_in_pixels) { x = screen->width_in_pixels - width; } movewindow(win, x, geom->y); break; default: PDEBUG("movestep: Moving in unknown direction.\n"); break; } /* switch direction */ /* Move cursor into the middle of the window after moving. */ xcb_warp_pointer(conn, XCB_NONE, win, 0, 0, 0, 0, width / 2, height / 2); xcb_flush(conn); free(geom); } void maximize(xcb_drawable_t win) { xcb_get_geometry_reply_t *geom; uint32_t values[2]; uint32_t mask = 0; if (screen->root == win || 0 == win) { return; } /* FIXME: Check if maximized already. If so, revert to stored geometry. */ /* Get window geometry. */ geom = xcb_get_geometry_reply(conn, xcb_get_geometry(conn, win), NULL); if (NULL == geom) { return; } /* Raise first. Pretty silly to maximize below something else. */ raisewindow(win); /* FIXME: Store original geom in property. */ /* Remove borders. */ values[0] = 0; mask = XCB_CONFIG_WINDOW_BORDER_WIDTH; xcb_configure_window(conn, win, mask, values); /* Move to top left. */ values[0] = 0; values[1] = 0; xcb_configure_window(conn, win, XCB_CONFIG_WINDOW_X | XCB_CONFIG_WINDOW_Y, values); /* Then resize. */ resize(win, screen->width_in_pixels, screen->height_in_pixels); free(geom); } void maxvert(xcb_drawable_t win) { xcb_get_geometry_reply_t *geom; uint32_t values[2]; if (screen->root == win || 0 == win) { return; } /* * FIXME: Check if maximized already. If so, revert to stored * geometry. */ /* Raise first. Pretty silly to maximize below something else. */ raisewindow(win); /* Get window geometry. */ geom = xcb_get_geometry_reply(conn, xcb_get_geometry(conn, win), NULL); if (NULL == geom) { return; } /* FIXME: Store original geom in property. */ /* Move to top of screen. */ values[0] = geom->x; values[1] = 0; xcb_configure_window(conn, win, XCB_CONFIG_WINDOW_X | XCB_CONFIG_WINDOW_Y, values); /* Then resize. */ resize(win, geom->width, screen->height_in_pixels - BORDERWIDTH * 2); free(geom); } void handle_keypress(xcb_drawable_t win, xcb_key_press_event_t *ev) { int i; key_enum_t key; for (key = KEY_MAX, i = KEY_H; i < KEY_MAX; i ++) { if (ev->detail == keys[i].keycode) { key = i; } } if (key == KEY_MAX) { PDEBUG("Unknown key pressed.\n"); return; } /* Is it shifted? */ if (ev->state & XCB_MOD_MASK_SHIFT) { switch (key) { case KEY_H: /* h */ resizestep(focuswin, 'h'); break; case KEY_J: /* j */ resizestep(focuswin, 'j'); break; case KEY_K: /* k */ resizestep(focuswin, 'k'); break; case KEY_L: /* l */ resizestep(focuswin, 'l'); break; default: /* Ignore other shifted keys. */ break; } } else { switch (key) { case KEY_RET: /* return */ start_terminal(); break; case KEY_H: /* h */ movestep(focuswin, 'h'); break; case KEY_J: /* j */ movestep(focuswin, 'j'); break; case KEY_K: /* k */ movestep(focuswin, 'k'); break; case KEY_L: /* l */ movestep(focuswin, 'l'); break; case KEY_TAB: /* tab */ break; case KEY_M: /* m */ maxvert(focuswin); break; case KEY_R: /* r*/ raiseorlower(focuswin); break; case KEY_X: /* x */ maximize(focuswin); break; default: /* Ignore other keys. */ break; } /* switch unshifted */ } } /* handle_keypress() */ void events(void) { xcb_generic_event_t *ev; xcb_drawable_t win; xcb_get_geometry_reply_t *geom; int mode = 0; uint16_t mode_x; uint16_t mode_y; for (;;) { ev = xcb_wait_for_event(conn); if (NULL == ev) { fprintf(stderr, "mcwm: Couldn't get event. Exiting...\n"); exit(1); } PDEBUG("Event: %d\n", ev->response_type); switch (ev->response_type & ~0x80) { case XCB_MAP_REQUEST: { xcb_map_request_event_t *e; PDEBUG("event: Map request.\n"); e = (xcb_map_request_event_t *) ev; newwin(e->window); } break; case XCB_DESTROY_NOTIFY: { xcb_destroy_notify_event_t *e; PDEBUG("event: Destroy notify.\n"); e = (xcb_destroy_notify_event_t *) ev; /* FIXME: Find the window in list of clients. */ } break; case XCB_BUTTON_PRESS: { xcb_button_press_event_t *e; e = ( xcb_button_press_event_t *) ev; PDEBUG ("Button %d pressed in window %ld, subwindow %d " "coordinates (%d,%d)\n", e->detail, e->event, e->child, e->event_x, e->event_y); if (e->child != 0) { win = e->child; /* * If middle button was pressed, raise window or lower * it if it was already on top. */ if (2 == e->detail) { raiseorlower(win); } else { /* We're moving or resizing. */ /* Raise window. */ raisewindow(win); /* Save the pointer coordinates when starting. */ mode_x = e->event_x; mode_y = e->event_y; /* Get window geometry. */ geom = xcb_get_geometry_reply(conn, xcb_get_geometry(conn, win), NULL); if (NULL == geom) { break; } if (1 == e->detail) { mode = MCWM_MOVE; /* * Warp pointer to upper left of window before * starting move. */ xcb_warp_pointer(conn, XCB_NONE, win, 0, 0, 0, 0, 1, 1); } else { mode = MCWM_RESIZE; /* Warp pointer to lower right. */ xcb_warp_pointer(conn, XCB_NONE, win, 0, 0, 0, 0, geom->width, geom->height); } /* * Take control of the pointer in the root window * and confine it to root. * * Give us events when the button is released or * if any motion occurs with the button held down, * but give us only hints about movement. We ask * for the position ourselves later. * * Keep updating everything else. * * Don't use any new cursor. */ xcb_grab_pointer(conn, 0, screen->root, XCB_EVENT_MASK_BUTTON_RELEASE | XCB_EVENT_MASK_BUTTON_MOTION | XCB_EVENT_MASK_POINTER_MOTION_HINT, XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC, screen->root, XCB_NONE, XCB_CURRENT_TIME); xcb_flush(conn); PDEBUG("mode now : %d\n", mode); } } /* subwindow */ else { /* * Do something on the root when mouse buttons are * pressed? */ } } break; case XCB_MOTION_NOTIFY: { xcb_query_pointer_reply_t *pointer; /* * Our pointer is moving and since we even get this event * we're resizing or moving a window. */ /* Get current pointer position. */ pointer = xcb_query_pointer_reply( conn, xcb_query_pointer(conn, screen->root), 0); if (NULL == pointer) { PDEBUG("Couldn't get pointer position.\n"); break; } if (mode == MCWM_MOVE) { mousemove(win, pointer->root_x, pointer->root_y); } else if (mode == MCWM_RESIZE) { /* Resize. */ mouseresize(win, pointer->root_x, pointer->root_y); } else { PDEBUG("Motion event when we're not moving our resizing!\n"); } free(pointer); } break; case XCB_BUTTON_RELEASE: PDEBUG("Mouse button released! mode = %d\n", mode); if (0 != mode) { xcb_button_release_event_t *e = (xcb_button_release_event_t *)ev; /* We're finished moving or resizing. */ xcb_ungrab_pointer(conn, XCB_CURRENT_TIME); xcb_flush(conn); /* Important! */ mode = 0; free(geom); setfocus(e->event); PDEBUG("mode now = %d\n", mode); } break; case XCB_KEY_PRESS: { xcb_key_press_event_t *e = (xcb_key_press_event_t *)ev; win = e->child; PDEBUG("Key %d pressed in window %ld\n", e->detail, win); handle_keypress(win, e); } break; case XCB_ENTER_NOTIFY: PDEBUG("event: Enter notify.\n"); if (0 == mode) { xcb_enter_notify_event_t *e = (xcb_enter_notify_event_t *)ev; /* * If we're entering the same window we focus now, * then don't bother focusing. */ if (e->event != focuswin) { setfocus(e->event); } } break; case XCB_CONFIGURE_NOTIFY: { xcb_configure_notify_event_t *e = (xcb_configure_notify_event_t *)ev; if (e->window == screen->root) { /* * When using RANDR, the root can suddenly change * geometry when the user adds a new screen, tilts * their screen 90 degrees or whatnot. * * Since mcwm cares about the root edges, we need to * update our view if this happens. */ PDEBUG("Notify event for root!\n"); screen->width_in_pixels = e->width; screen->height_in_pixels = e->height; PDEBUG("New root geometry: %dx%d\n", e->width, e->height); /* * FIXME: If the root suddenly got a lot smaller and * some windows are outside of the root window, we * need to rearrange them to fit the new geometry. */ } } break; case XCB_CONFIGURE_REQUEST: { xcb_configure_request_event_t *e = (xcb_configure_request_event_t *)ev; uint32_t mask = 0; uint32_t values[7]; int i = -1; PDEBUG("event: Configure request. mask = %d\n", e->value_mask); /* Check if it's anything we care about, like a resize or move. */ if (e->value_mask & XCB_CONFIG_WINDOW_X) { PDEBUG("Changing X coordinate to %d\n", e->x); mask |= XCB_CONFIG_WINDOW_X; i ++; values[i] = e->x; } if (e->value_mask & XCB_CONFIG_WINDOW_Y) { PDEBUG("Changing Y coordinate to %d.\n", e->y); mask |= XCB_CONFIG_WINDOW_Y; i ++; values[i] = e->y; } if (e->value_mask & XCB_CONFIG_WINDOW_WIDTH) { PDEBUG("Changing width to %d.\n", e->width); mask |= XCB_CONFIG_WINDOW_WIDTH; i ++; values[i] = e->width; } if (e->value_mask & XCB_CONFIG_WINDOW_HEIGHT) { PDEBUG("Changing height to %d.\n", e->height); mask |= XCB_CONFIG_WINDOW_HEIGHT; i ++; values[i] = e->height; } #if 0 /* Unsure. Do we allow this? */ if (e->value_mask & XCB_CONFIG_WINDOW_STACK_MODE) { PDEBUG("Changing stack order.\n"); mask |= XCB_CONFIG_WINDOW_STACK_MODE; i ++; values[i] = e->stack_mode; break; } #endif /* * Still left to decide about: * * XCB_CONFIG_WINDOW_SIBLING * XCB_CONFIG_WINDOW_BORDER_WIDTH */ if (-1 != i) { xcb_configure_window(conn, e->window, mask, values); xcb_flush(conn); } } break; case XCB_CIRCULATE_REQUEST: { xcb_circulate_request_event_t *e = (xcb_circulate_request_event_t *)ev; /* * Subwindow e->window to parent e->event is about to be * restacked. * * Just do what was requested, e->place is either * XCB_PLACE_ON_TOP or _ON_BOTTOM. We don't care. */ xcb_circulate_window(conn, e->window, e->place); } break; } /* switch */ free(ev); } } int main(int argc, char **argv) { uint32_t mask = 0; uint32_t values[2]; char ch; /* Option character */ xcb_void_cookie_t cookie; xcb_generic_error_t *error; xcb_drawable_t root; conf.borders = true; while (1) { ch = getopt(argc, argv, "bm"); if (-1 == ch) { /* No more options, break out of while loop. */ break; } switch (ch) { case 'b': /* No borders. */ conf.borders = false; break; } } conn = xcb_connect(NULL, NULL); if (xcb_connection_has_error(conn)) { perror("xcb_connect"); exit(1); } /* Get the first screen */ screen = xcb_setup_roots_iterator(xcb_get_setup(conn)).data; root = screen->root; PDEBUG("Screen size: %dx%d\nRoot window: %d\n", screen->width_in_pixels, screen->height_in_pixels, screen->root); /* FIXME: Get some colours. */ /* Loop over all clients and set up stuff. */ if (0 != setupscreen()) { fprintf(stderr, "Failed to initialize windows. Exiting.\n"); exit(1); } /* Set up key bindings. */ if (0 != setupkeys()) { fprintf(stderr, "mcwm: Couldn't set up keycodes. Exiting."); exit(1); } /* Grab some keys and mouse buttons. */ xcb_grab_key(conn, 1, root, MODKEY, XCB_NO_SYMBOL, XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC); xcb_grab_button(conn, 0, root, XCB_EVENT_MASK_BUTTON_PRESS | XCB_EVENT_MASK_BUTTON_RELEASE, XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC, root, XCB_NONE, 1 /* left mouse button */, MOUSEMODKEY); xcb_grab_button(conn, 0, root, XCB_EVENT_MASK_BUTTON_PRESS | XCB_EVENT_MASK_BUTTON_RELEASE, XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC, root, XCB_NONE, 2 /* middle mouse button */, MOUSEMODKEY); xcb_grab_button(conn, 0, root, XCB_EVENT_MASK_BUTTON_PRESS | XCB_EVENT_MASK_BUTTON_RELEASE, XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC, root, XCB_NONE, 3 /* right mouse button */, MOUSEMODKEY); /* Subscribe to events. */ mask = XCB_CW_EVENT_MASK; values[0] = XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT | XCB_EVENT_MASK_STRUCTURE_NOTIFY | XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY; cookie = xcb_change_window_attributes_checked(conn, root, mask, values); error = xcb_request_check(conn, cookie); xcb_flush(conn); if (NULL != error) { fprintf(stderr, "mcwm: Can't get SUBSTRUCTURE REDIRECT. " "Error code: %d\n" "Another window manager running? Exiting.\n", error->error_code); xcb_disconnect(conn); exit(1); } /* Loop over events. */ events(); xcb_disconnect(conn); exit(0); }