From a4430b79845c0c5417b8725a4272f91e04d42349 Mon Sep 17 00:00:00 2001 From: Vito Caputo Date: Sun, 14 Sep 2014 06:09:18 -0700 Subject: Initial import of vwm1 from published source tgz - Basic window management, window resizing, virtual desktops and shelf implementation - Simple double fork execution of launched clients --- LICENSE | 674 ++++++++++++++++++++++++++++ Makefile | 5 + TODO | 90 ++++ colors.def | 5 + launchers.def | 6 + list.h | 240 ++++++++++ vwm.c | 1376 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ vwm.h | 50 +++ 8 files changed, 2446 insertions(+) create mode 100644 LICENSE create mode 100644 Makefile create mode 100644 TODO create mode 100644 colors.def create mode 100644 launchers.def create mode 100644 list.h create mode 100644 vwm.c create mode 100644 vwm.h diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..94a9ed0 --- /dev/null +++ b/LICENSE @@ -0,0 +1,674 @@ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. 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If not, see . + +Also add information on how to contact you by electronic and paper mail. + + If the program does terminal interaction, make it output a short +notice like this when it starts in an interactive mode: + + Copyright (C) + This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, your program's commands +might be different; for a GUI interface, you would use an "about box". + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU GPL, see +. + + The GNU General Public License does not permit incorporating your program +into proprietary programs. If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +. diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..f31737e --- /dev/null +++ b/Makefile @@ -0,0 +1,5 @@ +vwm: vwm.c vwm.h list.h colors.def launchers.def Makefile + $(CC) -Wall -o vwm vwm.c -lX11 #-g -DTRACE + +clean: + rm -f vwm diff --git a/TODO b/TODO new file mode 100644 index 0000000..a073025 --- /dev/null +++ b/TODO @@ -0,0 +1,90 @@ +BUGS: + +- Audit the code for memory leaks, I don't clean up things diligently on + destroy of things, especially surrounding X resources I presume. + +- There seems to be a problem with automatically focusing the remaining window + when the focused window is unmanaged. Seems like I can simply repro. this by + starting iceweasel in an empty desktop. It seems to be due to the 10x10 plugin + container window, why are we tripped up by this little window? Why is this + window managed but not focusable? fucking X + +- Shelving a window doesn't focus it in the shelf context (is this limited to + only migration shelving?) + +- A floating window in the shelf, even when rendered as focused, doesn't behave + as it's focused.... this is really annoying. I really need to formalize the + multi-window (new window) behavior within the shelf, it's totally undefined + currently, I just avoid launching things in the shelf and don't run apps which + create windows from within it. + + ... + + Window creation while in the shelf is still a bit odd. The shelf isn't + intended to be a multi-window context, but it probably makes sense to + allow temporary situations on new windows in the shelf where windows + coexist/potentially overlap. In such a situation, the new window should + be mapped and raised but not focused, as well as being flagged as shelved. + Focusing the newly created window via Mod1+Tab or a click-to-focus should + not unmap the currently focused window, but should focus the new window, + temporarily adopting virtual-desktop behavior within the shelf. If the + window is closed/destroyed, the previously focused shelved window resumes + focus. If the shelf is exited and reentered, the newly created and + shelved window becomes the exclusively mapped and focused window. The + multi-window state within the shelf is a transient one which ceases to + occur the moment the shelf context is left or a subsequent Alt+Tab further + cycles the focused shelf, unmapping the currently mapped windows. + +- Mod1+d destruction of an empty virtual desktop should probably require double + press of the 'd', and perhaps a visual indicator of emminent destruction after + the initial 'd'. + + +FEATURES: + +- It would be useful if fullscreened windows obscured their border when they are + not obscured, as-is I lose a pixel on each edge in fullscreen xterms just so I + can see if the window is focused or not via the border color. This is only + appreciated when focus is potentially ambiguous. Come up with a good approach + which allows obstruction of the border while still showing the border in + potentially ambiguous situations. + +- Mod1+enter currently toggles between the currently user-specified (starts out + at client-configured) dimensions, and full-screen. I think it would be useful + to support 3 states, the clients originally configured dimensions, the + user-specified dimensions (if they have been varied from the client-configured + dimensions) and full-screen. This needs more thought, because it might not + be very intuitive to sometimes have 3 persisted window states vs. 2, depending + on if the user has reconfigured the window dimensions, perhaps it should just + always be 3 but sometimes 2 of them are identical. + +- Mod1+right click resizing should insert a short delay before actually applying + motion events for resizing, this better facilitates the use case of + click-focusing without raising, without accidental resizes occuring. This + window of time could also be leveraged to discover on what axis the resize is + to occur (compound vs x vs y). The resize outcome of the motion events which + occur in this delay period should still become realized rather than discarded, + should the resize last long enough to become realized rather than suppressed + and treated as only a focus without raise event. + +- Window cycling should probably be reversible (shift+Mod1+Tab?) + +- Window placement is static, at least cascade, preferably intelligent + placement resorting to cascade when the desktop is filled. I actually like how + wmaker 'auto mode' tries to fill open spaces with window placement then falls + back to cascade once no open spaces exist to accomodate the created window's + preferred size. + +- Virtual desktop genesis needs to query the user for the name, and create a + full-screen xterm running screen -S $desktopname for the root (or something) + +- Implement screen lock (right now I use xlock, I want something integrated which + does the following: + * disable sysrq on screen lock via /proc/sys/kernel/sysrq, restores sysrq on unlock + + * disable VT switching on screen lock (unsure how right now), restore VT switching + on unlock + + * if possible, disable ctrl-alt-backspace, allowing me to run Xorg with this enabled + without making my desktop totally insecure. When unlocked I like this ability, but + when locked it can't be available for obvious reasons. diff --git a/colors.def b/colors.def new file mode 100644 index 0000000..c71479a --- /dev/null +++ b/colors.def @@ -0,0 +1,5 @@ +color(focused_window_border, "Green") +color(shelved_window_border, "purple") +color(unfocused_window_border, "DarkGray") +color(rubberband, "Orange") +color(logo, "LimeGreen") diff --git a/launchers.def b/launchers.def new file mode 100644 index 0000000..428e5f9 --- /dev/null +++ b/launchers.def @@ -0,0 +1,6 @@ +/* it's up to you to ensure you don't conflict with the global VWM keys */ +/* keysym, argv list */ +launcher(XK_x, "/usr/bin/xterm") +launcher(XK_b, "/usr/bin/iceweasel", "-ProfileManager", "-no-remote") +launcher(XK_g, "/usr/bin/gimp") +launcher(XK_period, "/usr/local/bin/xlock") diff --git a/list.h b/list.h new file mode 100644 index 0000000..2a0e6e2 --- /dev/null +++ b/list.h @@ -0,0 +1,240 @@ +#ifndef __LIST_H +#define __LIST_H + +/* linux kernel linked list interface */ + +/* + * Simple doubly linked list implementation. + * + * Some of the internal functions ("__xxx") are useful when + * manipulating whole lists rather than single entries, as + * sometimes we already know the next/prev entries and we can + * generate better code by using them directly rather than + * using the generic single-entry routines. + */ + +typedef struct list_head { + struct list_head *next, *prev; +} list_head_t; + +#define LIST_HEAD_INIT(name) { &(name), &(name) } + +#define LIST_HEAD(name) \ + struct list_head name = LIST_HEAD_INIT(name) + +#define INIT_LIST_HEAD(ptr) do { \ + (ptr)->next = (ptr); (ptr)->prev = (ptr); \ +} while (0) + +/* + * Insert a new entry between two known consecutive entries. + * + * This is only for internal list manipulation where we know + * the prev/next entries already! + */ +static inline void __list_add(struct list_head *new, + struct list_head *prev, + struct list_head *next) +{ + next->prev = new; + new->next = next; + new->prev = prev; + prev->next = new; +} + +/** + * list_add - add a new entry + * @new: new entry to be added + * @head: list head to add it after + * + * Insert a new entry after the specified head. + * This is good for implementing stacks. + */ +static inline void list_add(struct list_head *new, struct list_head *head) +{ + __list_add(new, head, head->next); +} + +/** + * list_add_tail - add a new entry + * @new: new entry to be added + * @head: list head to add it before + * + * Insert a new entry before the specified head. + * This is useful for implementing queues. + */ +static inline void list_add_tail(struct list_head *new, struct list_head *head) +{ + __list_add(new, head->prev, head); +} + +/* + * Delete a list entry by making the prev/next entries + * point to each other. + * + * This is only for internal list manipulation where we know + * the prev/next entries already! + */ +static inline void __list_del(struct list_head *prev, struct list_head *next) +{ + next->prev = prev; + prev->next = next; +} + +/** + * list_del - deletes entry from list. + * @entry: the element to delete from the list. + * Note: list_empty on entry does not return true after this, the entry is in an undefined state. + */ +static inline void list_del(struct list_head *entry) +{ + __list_del(entry->prev, entry->next); + entry->next = (void *) 0; + entry->prev = (void *) 0; +} + +/** + * list_del_init - deletes entry from list and reinitialize it. + * @entry: the element to delete from the list. + */ +static inline void list_del_init(struct list_head *entry) +{ + __list_del(entry->prev, entry->next); + INIT_LIST_HEAD(entry); +} + +/** + * list_move - delete from one list and add as another's head + * @list: the entry to move + * @head: the head that will precede our entry + */ +static inline void list_move(struct list_head *list, struct list_head *head) +{ + __list_del(list->prev, list->next); + list_add(list, head); +} + +/** + * list_move_tail - delete from one list and add as another's tail + * @list: the entry to move + * @head: the head that will follow our entry + */ +static inline void list_move_tail(struct list_head *list, + struct list_head *head) +{ + __list_del(list->prev, list->next); + list_add_tail(list, head); +} + +/** + * list_empty - tests whether a list is empty + * @head: the list to test. + */ +static inline int list_empty(struct list_head *head) +{ + return head->next == head; +} + +static inline void __list_splice(struct list_head *list, + struct list_head *head) +{ + struct list_head *first = list->next; + struct list_head *last = list->prev; + struct list_head *at = head->next; + + first->prev = head; + head->next = first; + + last->next = at; + at->prev = last; +} + +/** + * list_splice - join two lists + * @list: the new list to add. + * @head: the place to add it in the first list. + */ +static inline void list_splice(struct list_head *list, struct list_head *head) +{ + if (!list_empty(list)) + __list_splice(list, head); +} + +/** + * list_splice_init - join two lists and reinitialise the emptied list. + * @list: the new list to add. + * @head: the place to add it in the first list. + * + * The list at @list is reinitialised + */ +static inline void list_splice_init(struct list_head *list, + struct list_head *head) +{ + if (!list_empty(list)) { + __list_splice(list, head); + INIT_LIST_HEAD(list); + } +} + +/** + * list_entry - get the struct for this entry + * @ptr: the &struct list_head pointer. + * @type: the type of the struct this is embedded in. + * @member: the name of the list_struct within the struct. + */ +#define list_entry(ptr, type, member) \ + ((type *)((char *)(ptr)-(unsigned long)(&((type *)0)->member))) + +/** + * list_for_each - iterate over a list + * @pos: the &struct list_head to use as a loop counter. + * @head: the head for your list. + */ +#define list_for_each(pos, head) \ + for (pos = (head)->next; pos != (head); \ + pos = pos->next) +/** + * list_for_each_prev - iterate over a list backwards + * @pos: the &struct list_head to use as a loop counter. + * @head: the head for your list. + */ +#define list_for_each_prev(pos, head) \ + for (pos = (head)->prev; pos != (head); \ + pos = pos->prev) + +/** + * list_for_each_safe - iterate over a list safe against removal of list entry + * @pos: the &struct list_head to use as a loop counter. + * @n: another &struct list_head to use as temporary storage + * @head: the head for your list. + */ +#define list_for_each_safe(pos, n, head) \ + for (pos = (head)->next, n = pos->next; pos != (head); \ + pos = n, n = pos->next) + +/** + * list_for_each_entry - iterate over list of given type + * @pos: the type * to use as a loop counter. + * @head: the head for your list. + * @member: the name of the list_struct within the struct. + */ +#define list_for_each_entry(pos, head, member) \ + for (pos = list_entry((head)->next, typeof(*pos), member); \ + &pos->member != (head); \ + pos = list_entry(pos->member.next, typeof(*pos), member)) + +/** + * list_for_each_entry_safe - iterate over list of given type safe against removal of list entry + * @pos: the type * to use as a loop counter. + * @n: another type * to use as temporary storage + * @head: the head for your list. + * @member: the name of the list_struct within the struct. + */ +#define list_for_each_entry_safe(pos, n, head, member) \ + for (pos = list_entry((head)->next, typeof(*pos), member), \ + n = list_entry(pos->member.next, typeof(*pos), member); \ + &pos->member != (head); \ + pos = n, n = list_entry(n->member.next, typeof(*n), member)) + + +#endif diff --git a/vwm.c b/vwm.c new file mode 100644 index 0000000..e7a1a5e --- /dev/null +++ b/vwm.c @@ -0,0 +1,1376 @@ +/* + * VWM - Vito's Window Manager, a minimal, non-reparenting X11 window manager + * + * Copyright (C) 2012 Vito Caputo - + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* Work started 8/3/2012, in the form of research into creating WM's using xcb, + * clearly I decided to just use Xlib instead at some point, and here we are. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "vwm.h" + +#define WINDOW_BORDER_WIDTH 1 +#define WINDOW_CASCADE_DELTA 100 + +typedef enum _vwm_context_focus_t { + VWM_CONTEXT_FOCUS_OTHER = 0, + VWM_CONTEXT_FOCUS_DESKTOP, + VWM_CONTEXT_FOCUS_SHELF +} vwm_context_focus_t; + + +static LIST_HEAD(desktops); /* global list of all (virtual) desktops in spatial created-in order */ +static LIST_HEAD(desktops_mru); /* global list of all (virtual) desktops in MRU order */ +static LIST_HEAD(windows); /* global list of all managed windows kept in MRU order */ +static vwm_desktop_t *focused_desktop = NULL; /* currently focused (virtual) desktop */ +static vwm_window_t *focused_shelf = NULL; /* currently focused shelved window */ +static vwm_context_focus_t focused_context = VWM_CONTEXT_FOCUS_DESKTOP; /* currently focused context */ +static int key_is_grabbed = 0; /* flag for tracking keyboard grab state */ + +static Display *display; +static Colormap cmap; + +#define color(_sym, _str) \ +static XColor _sym ## _color; +#include "colors.def" +#undef color + +static int screen_num; +static GC gc; +static Atom wm_delete_atom; +static Atom wm_protocols_atom; + +static void vwm_win_focus(vwm_window_t *vwin); +static void vwm_keypressed(Window win, XEvent *keypress); + +/* animated vwm logo done with simple XOR'd lines, a display of the WM being started and ready */ +typedef struct _vwm_point_t { + float x, y; +} vwm_point_t; + +vwm_point_t vwm_logo[] = { {0.0, 0.0}, + {0.170731, 1.0}, + {0.341463, 0.0}, + {0.463414, 1.0}, + {0.536585, 0.6}, + {0.609756, 1.0}, + {0.731707, 0.0}, + {0.804878, 0.4}, + {0.878048, 0.0}, + {1.0, 1.0} }; + +static void vwm_draw_logo(void) +{ + Window root; + int x, y, i; + unsigned int width, height, border_width, depth, yoff, xoff; + XPoint points[sizeof(vwm_logo) / sizeof(vwm_point_t)]; + + XGrabServer(display); + + /* learn the dimensions of the root window */ + XGetGeometry(display, RootWindow(display, screen_num), &root, &x, &y, &width, &height, &border_width, &depth); + + yoff = ((float)height * .375); + xoff = 0; + height /= 4; + + /* the logo gets shrunken vertically until it's essentially a flat line */ + while(height--) { + /* scale and center the points to the screen size */ + for(i = 0; i < sizeof(points) / sizeof(XPoint); i++) { + points[i].x = xoff + (vwm_logo[i].x * (float)width); + points[i].y = (vwm_logo[i].y * (float)height) + yoff; + } + + XDrawLines(display, RootWindow(display, screen_num), gc, points, sizeof(points) / sizeof(XPoint), CoordModeOrigin); + XFlush(display); + usleep(3333); + XDrawLines(display, RootWindow(display, screen_num), gc, points, sizeof(points) / sizeof(XPoint), CoordModeOrigin); + + /* the width is shrunken as well, but only by as much as it is tall */ + yoff++; + width -= 4; + xoff += 2; + } + + XUngrabServer(display); +} + + +/* XXX: for now just double forks to avoid having to collect return statuses of the long-running process */ +static void vwm_launch(char **argv) +{ + if(!fork()) { + if(!fork()) { + /* child */ + execvp(argv[0], argv); + } + exit(0); + } + wait(NULL); +} + + +/* switch to the desired context if it isn't already the focused one, inform caller if anything happened */ +static int vwm_context_focus(vwm_context_focus_t desired_context) +{ + vwm_context_focus_t entry_context = focused_context; + + switch(focused_context) { + vwm_window_t *vwin; + + case VWM_CONTEXT_FOCUS_SHELF: + if(desired_context == VWM_CONTEXT_FOCUS_SHELF) break; + + /* desired == DESKTOP && focused == SHELF */ + + VWM_TRACE("unmapping shelf window \"%s\"", focused_shelf->name); + XUnmapWindow(display, focused_shelf->window); + XFlush(display); /* for a more responsive feel */ + + /* map the focused desktop */ + list_for_each_entry(vwin, &windows, windows) { + if(vwin->desktop == focused_desktop && !vwin->shelved) { + VWM_TRACE("Mapping desktop window \"%s\"", vwin->name); + XMapWindow(display, vwin->window); + } + } + + if(focused_desktop->focused_window) { + VWM_TRACE("Focusing \"%s\"", focused_desktop->focused_window->name); + XSetInputFocus(display, focused_desktop->focused_window->window, RevertToPointerRoot, CurrentTime); + } + + focused_context = VWM_CONTEXT_FOCUS_DESKTOP; + break; + + case VWM_CONTEXT_FOCUS_DESKTOP: + /* unmap everything, map the shelf */ + if(desired_context == VWM_CONTEXT_FOCUS_DESKTOP) break; + + /* desired == SHELF && focused == DESKTOP */ + + /* there should be a focused shelf if the shelf contains any windows, we NOOP the switch if the shelf is empty. */ + if(focused_shelf) { + /* unmap everything on the current desktop */ + list_for_each_entry(vwin, &windows, windows) { + if(vwin->desktop == focused_desktop) { + VWM_TRACE("Unmapping desktop window \"%s\"", vwin->name); + XUnmapWindow(display, vwin->window); + } + } + + XFlush(display); /* for a more responsive feel */ + + VWM_TRACE("Mapping shelf window \"%s\"", focused_shelf->name); + XMapWindow(display, focused_shelf->window); + vwm_win_focus(focused_shelf); + + focused_context = VWM_CONTEXT_FOCUS_SHELF; + } + break; + + default: + VWM_BUG("unexpected focused context %x", focused_context); + break; + } + + /* return if the context has been changed, the caller may need to branch differently if nothing happened */ + return (focused_context != entry_context); +} + + +/* make the specified desktop the most recently used one */ +static void vwm_desktop_mru(vwm_desktop_t *d) +{ + list_move(&d->desktops_mru, &desktops_mru); +} + + +/* focus a virtual desktop */ +/* this switches to the desktop context if necessary, maps and unmaps windows accordingly if necessary */ +static int vwm_desktop_focus(vwm_desktop_t *d) +{ + XGrabServer(display); + XSync(display, False); + + /* if the context switched and the focused desktop is the desired desktop there's nothing else to do */ + if( (vwm_context_focus(VWM_CONTEXT_FOCUS_DESKTOP) && focused_desktop != d) || focused_desktop != d) { + vwm_window_t *w; + + /* unmap the windows on the currently focused desktop, map those on the newly focused one */ + list_for_each_entry(w, &windows, windows) { + if(w->shelved) continue; + + if(w->desktop == focused_desktop) { + VWM_TRACE("Unmapping \"%s\"", w->name); + XUnmapWindow(display, w->window); + } + } + + XFlush(display); + + list_for_each_entry(w, &windows, windows) { + if(w->shelved) continue; + + if(w->desktop == d) { + VWM_TRACE("Mapping \"%s\"", w->name); + XMapWindow(display, w->window); + } + } + + focused_desktop = d; + } + + /* directly focus the desktop's focused window if there is one, we don't use vwm_win_focus() intentionally XXX */ + if(focused_desktop->focused_window) { + VWM_TRACE("Focusing \"%s\"", focused_desktop->focused_window->name); + XSetInputFocus(display, focused_desktop->focused_window->window, RevertToPointerRoot, CurrentTime); + } + + XUngrabServer(display); + + return 1; +} + + +/* create a virtual desktop */ +static vwm_desktop_t * vwm_desktop_create(char *name) +{ + vwm_desktop_t *d; + + d = malloc(sizeof(vwm_desktop_t)); + if(d == NULL) { + VWM_PERROR("Failed to allocate desktop"); + goto _fail; + } + + d->name = name == NULL ? name : strdup(name); + d->focused_window = NULL; + + list_add_tail(&d->desktops, &desktops); + list_add_tail(&d->desktops_mru, &desktops_mru); + + return d; + +_fail: + return NULL; +} + + +/* destroy a virtual desktop */ +static void vwm_desktop_destroy(vwm_desktop_t *d) +{ + /* silently refuse to destroy a desktop having windows (for now) */ + /* there's _always_ a focused window on a desktop having mapped windows */ + /* also silently refuse to destroy the last desktop (for now) */ + if(d->focused_window || (d->desktops.next == d->desktops.prev)) return; + + /* focus another desktop if we're the focused desktop */ + if(d == focused_desktop) { + /* we just look for one that is different from ours, relative to ours, looking at the next one then the previous */ + if(d->desktops.next != &desktops) { + vwm_desktop_focus(list_entry(d->desktops.next, vwm_desktop_t, desktops)); + } else if(d->desktops.prev != &desktops) { + vwm_desktop_focus(list_entry(d->desktops.prev, vwm_desktop_t, desktops)); + } + } + + list_del(&d->desktops); + list_del(&d->desktops_mru); +} + + +/* make the specified window the most recently used one */ +static void vwm_win_mru(vwm_window_t *vwin) +{ + list_move(&vwin->windows, &windows); +} + + +/* send a client message to a window (currently used for WM_DELETE) */ +static void vwm_win_message(vwm_window_t *vwin, Atom type, long foo) +{ + XEvent event; + + memset(&event, 0, sizeof(event)); + event.xclient.type = ClientMessage; + event.xclient.window = vwin->window; + event.xclient.message_type = type; + event.xclient.format = 32; + event.xclient.data.l[0] = foo; + event.xclient.data.l[1] = CurrentTime; /* XXX TODO: is CurrentTime actually correct to use for this purpose? */ + + XSendEvent(display, vwin->window, False, 0, &event); +} + + +/* looks up the window in the global window list */ +static vwm_window_t * vwm_win_lookup(Window win) +{ + vwm_window_t *tmp, *vwin = NULL; + + list_for_each_entry(tmp, &windows, windows) { + if(tmp->window == win) { + vwin = tmp; + break; + } + } + + return vwin; +} + + +/* helper for returning the currently focused window (considers current context...), may return NULL */ +static vwm_window_t * vwm_win_focused(void) +{ + vwm_window_t *vwin = NULL; + + switch(focused_context) { + case VWM_CONTEXT_FOCUS_SHELF: + vwin = focused_shelf; + break; + + case VWM_CONTEXT_FOCUS_DESKTOP: + if(focused_desktop) vwin = focused_desktop->focused_window; + break; + + default: + VWM_BUG("Unsupported context"); + break; + } + + return vwin; +} + +/* fullscreen a window with borders obscured "allscreen" */ +static void vwm_win_allscreen(vwm_window_t *vwin) +{ + Window root; + int x, y; + unsigned int width, height, border_width, depth; + + if(vwin->fullscreened == 2) return; + + XGetGeometry(display, RootWindow(display, screen_num), &root, &x, &y, &width, &height, &border_width, &depth); + XGetGeometry(display, vwin->window, &root, &vwin->client.x, &vwin->client.y, &vwin->client.width, &vwin->client.height, &border_width, &depth); + XMoveResizeWindow(display, vwin->window, -border_width, -border_width, width, height); + vwin->fullscreened = 2; +} + +/* fullscreen a window */ +static void vwm_win_fullscreen(vwm_window_t *vwin) +{ + Window root; + int x, y; + unsigned int width, height, border_width, depth; + + if(vwin->fullscreened == 1) return; + + XGetGeometry(display, RootWindow(display, screen_num), &root, &x, &y, &width, &height, &border_width, &depth); + /* TODO: do not remember the current geometry if we're going from allscreen to fullscreen! */ + XGetGeometry(display, vwin->window, &root, &vwin->client.x, &vwin->client.y, &vwin->client.width, &vwin->client.height, &border_width, &depth); + XMoveResizeWindow(display, vwin->window, 0, 0, width - (border_width * 2), height - (border_width * 2)); + vwin->fullscreened = 1; +} + + +/* restore a window to its non-fullscreened size and coordinates */ +static void vwm_win_restore(vwm_window_t *vwin) +{ + if(!vwin->fullscreened) return; + + XMoveResizeWindow(display, vwin->window, vwin->client.x, vwin->client.y, vwin->client.width, vwin->client.height); + vwin->fullscreened = 0; +} + + +/* focus a window */ +/* this updates window borders as needed and the X input focus */ +static void vwm_win_focus(vwm_window_t *vwin) +{ + VWM_TRACE("focusing: %#x", (unsigned int)vwin->window); + + /* change the focus to the new window */ + XSetInputFocus(display, vwin->window, RevertToPointerRoot, CurrentTime); + + /* update the border color accordingly */ + if(vwin->shelved) { + /* set the border of the newly focused window to the shelved color */ + XSetWindowBorder(display, vwin->window, shelved_window_border_color.pixel); + } else { + if(vwin->desktop == focused_desktop && focused_desktop->focused_window) { + /* if we've changed focus within the same desktop, set the currently focused window border to the + * unfocused color. Otherwise, we want to leave the focused color on the old window on the old desktop */ + XSetWindowBorder(display, focused_desktop->focused_window->window, unfocused_window_border_color.pixel); + } + + /* set the border of the newly focused window to the focused color */ + XSetWindowBorder(display, vwin->window, focused_window_border_color.pixel); + + /* persist this on a per-desktop basis so it can be restored on desktop switches */ + focused_desktop->focused_window = vwin; + } +} + + +/* focus the next window on a virtual desktop relative to the supplied window */ +static vwm_window_t * vwm_win_focus_next(vwm_window_t *vwin, vwm_context_focus_t context) +{ + vwm_window_t *next; + + list_for_each_entry(next, &vwin->windows, windows) { + /* searching for the next mapped window in this context, using vwin->windows as the head */ + if(&next->windows == &windows) continue; /* XXX: skip the containerless head, we're leveraging the circular list implementation */ + + if(next->mapped && ((context == VWM_CONTEXT_FOCUS_SHELF && next->shelved) || (context == VWM_CONTEXT_FOCUS_DESKTOP && !next->shelved && next->desktop == focused_desktop))) break; + } + + switch(context) { + case VWM_CONTEXT_FOCUS_DESKTOP: + if(next != next->desktop->focused_window) { + /* focus the changed window */ + vwm_win_focus(next); + XRaiseWindow(display, next->window); + } + break; + + case VWM_CONTEXT_FOCUS_SHELF: + if(next != focused_shelf) { + /* shelf switch, unmap the focused shelf and take it over */ + VWM_TRACE("Unmapping window \"%s\"", focused_shelf->name); + XUnmapWindow(display, focused_shelf->window); + + XFlush(display); + + VWM_TRACE("Mapping window \"%s\"", next->name); + XMapWindow(display, next->window); + focused_shelf = next; + vwm_win_focus(next); + } + break; + + default: + VWM_ERROR("Unhandled focus context %#x", context); + break; + } + + VWM_TRACE("\"%s\"", next->name); + + return next; +} + + +/* shelves a window, if the window is focused we focus the next one (if possible) */ +static void vwm_win_shelve(vwm_window_t *vwin) +{ + /* already shelved, NOOP */ + if(vwin->shelved) return; + + /* shelving focused window, focus the next window */ + if(vwin == vwin->desktop->focused_window) { + vwm_win_mru(vwm_win_focus_next(vwin, VWM_CONTEXT_FOCUS_DESKTOP)); + } + + if(vwin == vwin->desktop->focused_window) { + /* TODO: we can probably put this into vwm_win_focus_next() and have it always handled there... */ + vwin->desktop->focused_window = NULL; + } + + vwin->shelved = 1; + vwm_win_mru(vwin); + + /* newly shelved windows always become the focused shelf */ + focused_shelf = vwin; + + VWM_TRACE("Unmapping \"%s\"", vwin->name); + XUnmapWindow(display, vwin->window); +} + + +typedef enum _vwm_grab_mode_t { + VWM_NOT_GRABBED = 0, + VWM_GRABBED +} vwm_grab_mode_t; + +/* manages a new window (called in response to CreateNotify events, and during startup to manage existing windows) */ +static vwm_window_t * vwm_win_manage(Window win, vwm_grab_mode_t grabbed) +{ + XWindowAttributes attrs; + vwm_window_t *vwin, *focused; + + /* prevent races */ + if(!grabbed) { + XGrabServer(display); + XSync(display, False); + } + + /* verify the window still exists */ + if(!XGetWindowAttributes(display, win, &attrs)) goto _fail_grabbed; + + /* honor overrides, don't manage InputOnly windows */ + if(attrs.override_redirect || attrs.class == InputOnly) goto _fail_grabbed; + + VWM_TRACE("Managing %#x", (unsigned int)win); + + /* if no desktops exist, implicitly create one */ + if(!focused_desktop) { + /* TODO: interactively name desktops */ + vwm_desktop_focus(vwm_desktop_create(NULL)); + vwm_desktop_mru(focused_desktop); + } + + /* allocate and initialize our per-managed-window structure and get it on the global windows list */ + vwin = (vwm_window_t *)malloc(sizeof(vwm_window_t)); + if(vwin == NULL) { + VWM_PERROR("Failed to allocate vwin"); + goto _fail_grabbed; + } + + XUngrabButton(display, AnyButton, AnyModifier, win); + XGrabButton(display, AnyButton, Mod1Mask, win, False, (PointerMotionMask | ButtonPressMask | ButtonReleaseMask), GrabModeAsync, GrabModeAsync, None, None); + XGrabKey(display, AnyKey, Mod1Mask, win, False, GrabModeAsync, GrabModeAsync); + XSetWindowBorder(display, win, unfocused_window_border_color.pixel); + + vwin->name = NULL; + XFetchName(display, win, &vwin->name); + + vwin->hints = XAllocSizeHints(); + if(!vwin->hints) { + VWM_PERROR("Failed to allocate WM hints"); + goto _fail_grabbed; + } + XGetWMNormalHints(display, win, vwin->hints, &vwin->hints_supplied); + + vwin->desktop = focused_desktop; + vwin->window = win; + vwin->fullscreened = 0; + vwin->shelved = (focused_context == VWM_CONTEXT_FOCUS_SHELF); /* if we're in the shelf when the window is created, the window is shelved */ + vwin->mapped = (attrs.map_state != IsUnmapped); + + /* remember whatever the current attributes are */ + vwin->client.x = attrs.x; + vwin->client.y = attrs.y; + vwin->client.width = attrs.width; + vwin->client.height = attrs.height; + + VWM_TRACE("hints: flags=%lx x=%i y=%i w=%i h=%i minw=%i minh=%i maxw=%i maxh=%i winc=%i hinc=%i basew=%i baseh=%i grav=%x", + vwin->hints->flags, + vwin->hints->x, vwin->hints->y, + vwin->hints->width, vwin->hints->height, + vwin->hints->min_width, vwin->hints->min_height, + vwin->hints->max_width, vwin->hints->max_height, + vwin->hints->width_inc, vwin->hints->height_inc, + vwin->hints->base_width, vwin->hints->base_height, + vwin->hints->win_gravity); + + if((vwin->hints_supplied & (USSize | PSize))) { + vwin->client.width = vwin->hints->base_width; + vwin->client.height = vwin->hints->base_height; + } + + /* put it on the global windows list, if there's a focused window insert the new one after it */ + if(!list_empty(&windows) && (focused = vwm_win_focused())) { + /* insert the vwin immediately after the focused window, so Mod1+Tab goes to the new window */ + list_add(&vwin->windows, &focused->windows); + } else { + list_add(&vwin->windows, &windows); + } + + /* if the desktop has no focused window yet, automatically focus the newly managed one */ + /* TODO: how does this interact with the shelf? */ + if(!focused_desktop->focused_window) { + VWM_TRACE("Mapped window \"%s\" is alone on desktop \"%s\", focusing", vwin->name, focused_desktop->name); + vwm_win_focus(vwin); + } + + if(!grabbed) XUngrabServer(display); + + return vwin; + +_fail_grabbed: + if(!grabbed) XUngrabServer(display); + + return NULL; +} + + +/* helper for (idempotently) unfocusing a window, deals with context switching etc... */ +static void vwm_win_unfocus(vwm_window_t *vwin) +{ + /* if we're the shelved window, cycle the focus to the next shelved window if possible, if there's no more shelf, switch to the desktop */ + /* TODO: what if it's not mapped but goes away??? we don't want to try take the InputFocus it when not mapped... XXX TODO */ + if(vwin == focused_shelf) { + VWM_TRACE("unfocusing focused shelf"); + vwm_win_focus_next(vwin, VWM_CONTEXT_FOCUS_SHELF); + + if(vwin == focused_shelf) { + VWM_TRACE("shelf empty, leaving"); + /* no other shelved windows, exit the shelf context */ + vwm_context_focus(VWM_CONTEXT_FOCUS_DESKTOP); + focused_shelf = NULL; + } + } + + /* if we're the focused window cycle the focus to the next window on the desktop if possible */ + if(vwin->desktop->focused_window == vwin) { + VWM_TRACE("unfocusing focused window"); + vwm_win_focus_next(vwin, VWM_CONTEXT_FOCUS_DESKTOP); + } + + if(vwin->desktop->focused_window == vwin) { + VWM_TRACE("desktop empty"); + vwin->desktop->focused_window = NULL; + } +} + + +/* migrate a window to a new desktop, focuses the destionation desktop as well */ +static void vwm_win_migrate(vwm_window_t *vwin, vwm_desktop_t *desktop) +{ + /* go through the motions of unfocusing the window if it is focused */ + vwm_win_unfocus(vwin); + + /* ensure not shelved */ + vwin->shelved = 0; + + /* assign the new desktop */ + vwin->desktop = desktop; + + /* currently we always focus the new desktop in a migrate */ + vwm_desktop_focus(desktop); + + /* focus the window so borders get updated */ + vwm_win_focus(vwin); + vwm_win_mru(vwin); + + /* ensure the window is raised */ + XRaiseWindow(display, vwin->window); +} + + +/* unmanages a managed window (called in response to DestroyNotify) */ +static void vwm_win_unmanage(Window win) +{ + vwm_window_t *vwin; + + VWM_TRACE("unmanaging %x", (unsigned int)win); + + XGrabServer(display); + XSync(display, False); + + /* find the window */ + vwin = vwm_win_lookup(win); + + if(!vwin) { + VWM_TRACE("window %x not managed", (unsigned int)win); + goto _ungrab; + } + + /* unfocus the window */ + vwm_win_unfocus(vwin); + + /* remove the window from the global windows list */ + list_del(&vwin->windows); + + if(vwin->name) XFree(vwin->name); + + free(vwin); + +_ungrab: + XUngrabServer(display); +} + + +/* manage all existing windows (for startup) */ +static int vwm_manage_existing(void) +{ + Window root, parent; + Window *children = NULL; + unsigned int n_children, i; + vwm_window_t *vwin; + + XGrabServer(display); + XSync(display, False); + XQueryTree(display, RootWindow(display, screen_num), &root, &parent, &children, &n_children); + + for(i = 0; i < n_children; i++) { + if (children[i] == None) continue; + + if((vwin = vwm_win_manage(children[i], VWM_GRABBED)) == NULL) goto _fail_grabbed; + } + + XUngrabServer(display); + + if(children) XFree(children); + + return 1; + +_fail_grabbed: + XUngrabServer(display); + + if(children) XFree(children); + + return 0; +} + + +/* helper function for resizing a window, how the motion is applied depends on where in the window the impetus event occurred */ +static void compute_resize(vwm_window_t *vwin, XWindowAttributes *attrs, XEvent *impetus, XEvent *terminus, XWindowAttributes *new) +{ + int dw = (attrs->width / 2); + int dh = (attrs->height / 2); + int xdelta = (terminus->xbutton.x_root - impetus->xbutton.x_root); + int ydelta = (terminus->xbutton.y_root - impetus->xbutton.y_root); + int min_width = 0, min_height = 0; + int width_inc = 1, height_inc = 1; + + /* TODO: there's probably a problem here WRT border width, I probably should be considering it. */ + + if(vwin && vwin->hints) { + if((vwin->hints_supplied & PMinSize)) { + min_width = vwin->hints->min_width; + min_height = vwin->hints->min_height; + VWM_TRACE("window size hints exist and minimum sizes are w=%i h=%i", min_width, min_height); + } + + if((vwin->hints_supplied & PResizeInc)) { + width_inc = vwin->hints->width_inc; + height_inc = vwin->hints->height_inc; + VWM_TRACE("window size hints exist and resize increments are w=%i h=%i", width_inc, height_inc); + if(!width_inc) width_inc = 1; + if(!height_inc) height_inc = 1; + } + } + + xdelta = xdelta / width_inc * width_inc; + ydelta = ydelta / height_inc * height_inc; + + if(impetus->xbutton.x < dw && impetus->xbutton.y < dh) { + /* grabbed top left */ + new->x = attrs->x + xdelta; + new->y = attrs->y + ydelta; + new->width = attrs->width - xdelta; + new->height = attrs->height - ydelta; + } else if(impetus->xbutton.x > dw && impetus->xbutton.y < dh) { + /* grabbed top right */ + new->x = attrs->x; + new->y = attrs->y + ydelta; + new->width = attrs->width + xdelta; + new->height = attrs->height - ydelta; + } else if(impetus->xbutton.x < dw && impetus->xbutton.y > dh) { + /* grabbed bottom left */ + new->x = attrs->x + xdelta; + new->y = attrs->y; + new->width = attrs->width - xdelta; + new->height = attrs->height + ydelta; + } else if(impetus->xbutton.x > dw && impetus->xbutton.y > dh) { + /* grabbed bottom right */ + new->x = attrs->x; + new->y = attrs->y; + new->width = attrs->width + xdelta; + new->height = attrs->height + ydelta; + } + + /* constrain the width and height of the window according to the minimums */ + if(new->width < min_width) { + if(attrs->x != new->x) { + new->x -= (min_width - new->width); + } + + new->width = min_width; + } + + if(new->height < min_height) { + if(attrs->y != new->y) { + new->y -= (min_height - new->height); + } + + new->height = min_height; + } +} + + +typedef enum _vwm_adjust_mode_t { + VWM_ADJUST_RESIZE, + VWM_ADJUST_MOVE +} vwm_adjust_mode_t; + +/* XXX: impetus is currently assumed to be an xbutton event */ +static int vwm_clicked(Window win, XEvent *impetus) +{ + XWindowAttributes orig, lastrect; + vwm_window_t *vwin; + + /* verify the window still exists */ + if(!XGetWindowAttributes(display, win, &orig)) goto _fail; + + if(!(vwin = vwm_win_lookup(win))) goto _fail; + + if(impetus->xbutton.state & Mod1Mask) { + int finished = 0; + vwm_adjust_mode_t mode; + + switch(impetus->xbutton.button) { + case Button1: + /* immediately raise the window if we're relocating, + * resizes are supported without raising (which also enables NULL resizes to focus without raising) */ + mode = VWM_ADJUST_MOVE; + XRaiseWindow(display, win); + break; + + case Button3: + /* grab the server on resize for the xor rubber-banding's sake */ + XGrabServer(display); + XSync(display, False); + + XDrawRectangle(display, RootWindow(display, screen_num), gc, orig.x, orig.y, orig.width, orig.height); + lastrect = orig; + + mode = VWM_ADJUST_RESIZE; + break; + + default: + goto _fail; + } + + /* apply Motion events until the button is released, move vs. move+resize is performed depending on the supplied mode */ + while(!finished) { + XEvent event; + XWindowAttributes resized; + + XNextEvent(display, &event); + switch(event.type) { + case ButtonRelease: + switch(mode) { + case VWM_ADJUST_MOVE: + XMoveWindow(display, win, + orig.x + (event.xbutton.x_root - impetus->xbutton.x_root), + orig.y + (event.xbutton.y_root - impetus->xbutton.y_root)); + break; + + case VWM_ADJUST_RESIZE: + compute_resize(vwin, &orig, impetus, &event, &resized); + /* move and resize the window @ resized */ + XDrawRectangle(display, RootWindow(display, screen_num), gc, lastrect.x, lastrect.y, lastrect.width, lastrect.height); + XMoveResizeWindow(display, win, resized.x, resized.y, resized.width, resized.height); + XUngrabServer(display); + + break; + + default: + break; + } + /* once you manipulate the window it's no longer fullscreened, simply hitting Mod1+Return once will restore fullscreened mode */ + vwin->fullscreened = 0; + finished = 1; + break; + + case MotionNotify: + switch(mode) { + case VWM_ADJUST_MOVE: + XMoveWindow(display, win, + orig.x + (event.xmotion.x_root - impetus->xbutton.x_root), + orig.y + (event.xmotion.y_root - impetus->xbutton.y_root)); + break; + + case VWM_ADJUST_RESIZE: + /* XXX: it just so happens the XMotionEvent structure is identical to XButtonEvent in the fields + * needed by compute_resize... */ + compute_resize(vwin, &orig, impetus, &event, &resized); + /* erase the last rectangle */ + XDrawRectangle(display, RootWindow(display, screen_num), gc, lastrect.x, lastrect.y, lastrect.width, lastrect.height); + /* draw a frame @ resized coordinates */ + XDrawRectangle(display, RootWindow(display, screen_num), gc, resized.x, resized.y, resized.width, resized.height); + /* remember the last rectangle */ + lastrect = resized; + break; + + default: + break; + } + break; + + default: + VWM_ERROR("unexpected event during window adjust %i", event.type); + break; + } + } + } + + /* always set the input focus to the clicked window, note if we allow this to happen on the root window, it enters sloppy focus mode + * until a non-root window is clicked, which is an interesting hybrid but not how I prefer it. */ + if(vwin != focused_desktop->focused_window && vwin->window != RootWindow(display, screen_num)) { + vwm_win_focus(vwin); + vwm_win_mru(vwin); + } + + XFlush(display); + XUngrabPointer(display, CurrentTime); + + return 1; + +_fail: + XUngrabPointer(display, CurrentTime); + + return 0; +} + + +/* Called in response to KeyRelease events, for now only interesting for detecting when Mod1 is released termintaing + * window cycling for application of MRU on the focused window */ +static void vwm_keyreleased(Window win, XEvent *keyrelease) +{ + vwm_window_t *vwin; + KeySym sym; + + switch((sym = XLookupKeysym(&keyrelease->xkey, 0))) { + case XK_Alt_R: + case XK_Alt_L: /* TODO: actually use the modifier mapping, for me XK_Alt_[LR] is Mod1. XGetModifierMapping()... */ + VWM_TRACE("XK_Alt_[LR] released"); + /* make the focused window the most recently used */ + if((vwin = vwm_win_focused())) { + vwm_win_mru(vwin); + } + + /* make the focused desktop the most recently used */ + if(focused_context == VWM_CONTEXT_FOCUS_DESKTOP && focused_desktop) { + vwm_desktop_mru(focused_desktop); + } + + if(key_is_grabbed) { + XUngrabKeyboard(display, CurrentTime); + XFlush(display); + key_is_grabbed = 0; + } + break; + + default: + VWM_TRACE("Unhandled keycode: %x", (unsigned int)sym); + break; + } +} + + +/* Called in response to KeyPress events, I currenly only grab Mod1 keypress events */ +static void vwm_keypressed(Window win, XEvent *keypress) +{ + vwm_window_t *vwin; + KeySym sym; + static KeySym last_sym; + static int repeat_cnt = 0; + int do_grab = 0; + + sym = XLookupKeysym(&keypress->xkey, 0); + + /* detect repeaters, note repeaters do not span interrupted Mod1 sequences! */ + if(key_is_grabbed && sym == last_sym) { + repeat_cnt++; + } else { + repeat_cnt = 0; + } + + switch(sym) { + +#define launcher(_sym, _argv...)\ + case _sym: \ + { \ + char *args[] = {_argv, NULL};\ + vwm_launch(args);\ + break; \ + } +#include "launchers.def" +#undef launcher + + case XK_grave: /* toggle shelf visibility */ + vwm_context_focus(VWM_CONTEXT_FOCUS_OTHER); + break; + + case XK_Tab: /* cycle focused window */ + do_grab = 1; /* grab the keyboard so we can respond to the Mod1 release */ + + /* focus the next window, note this doesn't affect MRU, that happens on Mod1 release */ + if((vwin = vwm_win_focused())) { + vwm_win_focus_next(vwin, focused_context); + } + break; + + case XK_space: /* cycle focused desktop utilizing MRU */ + do_grab = 1; /* grab the keyboard so we can respond to the Mod1 release for MRU updating */ + + /* XXX: note the sensitivity to the desktops_mru head here, we want to look past it. */ + vwm_desktop_focus(list_entry(focused_desktop->desktops_mru.next == &desktops_mru ? focused_desktop->desktops_mru.next->next : focused_desktop->desktops_mru.next, vwm_desktop_t, desktops_mru)); + break; + + case XK_d: /* destroy focused */ + if((vwin = vwm_win_focused())) { + if(keypress->xkey.state & ShiftMask) { /* brutally destroy the focused window */ + XKillClient(display, vwin->window); + } else { /* kindly destroy the focused window */ + vwm_win_message(vwin, wm_protocols_atom, wm_delete_atom); + } + } else if(focused_context == VWM_CONTEXT_FOCUS_DESKTOP) { + /* destroy the focused desktop when destroy occurs without any windows */ + vwm_desktop_destroy(focused_desktop); + } + break; + + case XK_Escape: /* leave VWM rudely */ + exit(42); + + case XK_v: /* instantiate (and focus) a new (potentially empty, unless migrating) virtual desktop */ + if(keypress->xkey.state & ShiftMask) { + if((vwin = vwm_win_focused())) { + /* migrate the focused window to a newly created virtual desktop, focusing the new desktop simultaneously */ + vwm_win_migrate(vwin, vwm_desktop_create(NULL)); + } + } else { + vwm_desktop_focus(vwm_desktop_create(NULL)); + vwm_desktop_mru(focused_desktop); + } + break; + + case XK_h: /* previous virtual desktop, if we're in the shelf context this will simply switch to desktop context */ + do_grab = 1; /* grab the keyboard so we can respond to the Mod1 release for MRU updating */ + + if(keypress->xkey.state & ShiftMask) { + if((vwin = vwm_win_focused()) && vwin->desktop->desktops.prev != &desktops) { + /* migrate the focused window with the desktop focus to the previous desktop */ + vwm_win_migrate(vwin, list_entry(vwin->desktop->desktops.prev, vwm_desktop_t, desktops)); + } + } else { + if(focused_context == VWM_CONTEXT_FOCUS_SHELF) { + /* focus the focused desktop instead of the shelf */ + vwm_context_focus(VWM_CONTEXT_FOCUS_DESKTOP); + } else if(focused_desktop->desktops.prev != &desktops) { + /* focus the previous desktop */ + vwm_desktop_focus(list_entry(focused_desktop->desktops.prev, vwm_desktop_t, desktops)); + } + } + break; + + case XK_l: /* next virtual desktop, if we're in the shelf context this will simply switch to desktop context */ + do_grab = 1; /* grab the keyboard so we can respond to the Mod1 release for MRU updating */ + + if(keypress->xkey.state & ShiftMask) { + if((vwin = vwm_win_focused()) && vwin->desktop->desktops.next != &desktops) { + /* migrate the focused window with the desktop focus to the next desktop */ + vwm_win_migrate(vwin, list_entry(vwin->desktop->desktops.next, vwm_desktop_t, desktops)); + } + } else { + if(focused_context == VWM_CONTEXT_FOCUS_SHELF) { + /* focus the focused desktop instead of the shelf */ + vwm_context_focus(VWM_CONTEXT_FOCUS_DESKTOP); + } else if(focused_desktop->desktops.next != &desktops) { + /* focus the next desktop */ + vwm_desktop_focus(list_entry(focused_desktop->desktops.next, vwm_desktop_t, desktops)); + } + } + break; + + case XK_k: /* raise or shelve the focused window */ + if((vwin = vwm_win_focused())) { + if(keypress->xkey.state & ShiftMask) { /* shelf the window and focus the shelf */ + if(focused_context != VWM_CONTEXT_FOCUS_SHELF) { + /* shelve the focused window while focusing the shelf */ + vwm_win_shelve(vwin); + vwm_context_focus(VWM_CONTEXT_FOCUS_SHELF); + } + } else { + do_grab = 1; + + XRaiseWindow(display, vwin->window); + + if(repeat_cnt == 1) { + /* double: reraise & fullscreen */ + vwm_win_fullscreen(vwin); + } else if(repeat_cnt == 2) { + /* triple: reraise & fullscreen w/borders obscured by screen perimiter */ + vwm_win_allscreen(vwin); + } + XFlush(display); + } + } + break; + + case XK_j: /* lower or unshelve the focused window */ + if((vwin = vwm_win_focused())) { + if(keypress->xkey.state & ShiftMask) { /* unshelf the window to the focused desktop, and focus the desktop */ + if(focused_context == VWM_CONTEXT_FOCUS_SHELF) { + /* unshelve the focused window, focus the desktop it went to */ + vwm_win_migrate(vwin, focused_desktop); + } + } else { + if(vwin->fullscreened == 2) { + vwm_win_fullscreen(vwin); + } else { + XLowerWindow(display, vwin->window); + } + XFlush(display); + } + } + break; + + case XK_Return: /* (full-screen / restore) focused window */ + if((vwin = vwm_win_focused())) { + if(vwin->fullscreened) { + vwm_win_restore(vwin); + } else { + vwm_win_fullscreen(vwin); + } + } + break; + + case XK_s: /* shelve focused window */ + if((vwin = vwm_win_focused()) && !vwin->shelved) { + vwm_win_shelve(vwin); + } + break; + + default: + VWM_TRACE("Unhandled keycode: %x", (unsigned int)sym); + break; + } + + /* if what we're doing requests a grab if not already grabbed, grab keyboard */ + if(!key_is_grabbed && do_grab) { + XGrabKeyboard(display, RootWindow(display, screen_num), False, GrabModeAsync, GrabModeAsync, CurrentTime); + key_is_grabbed = 1; + } + + /* remember the symbol for repeater detection */ + last_sym = sym; +} + + +static int errhandler(Display *display, XErrorEvent *err) +{ + /* TODO */ + return 1; +} + +int main(int argc, char *argv[]) +{ + int done = 0; + XEvent event; + Cursor pointer; + + /* open connection with the server */ + if((display = XOpenDisplay(NULL)) == NULL) { + VWM_ERROR("Cannot open display"); + return 1; + } + + /* prevent children from inheriting the X connection */ + if(fcntl(ConnectionNumber(display), F_SETFD, FD_CLOEXEC) < 0) { + VWM_ERROR("Cannot set FD_CLOEXEC on X connection"); + return 2; + } + + XSetErrorHandler(errhandler); + + screen_num = DefaultScreen(display); + + /* allocate colors, I make assumptions about the X server's color capabilities since I'll only use this on modern-ish computers... */ + cmap = DefaultColormap(display, screen_num); + +#define color(_sym, _str) \ + XAllocNamedColor(display, cmap, _str, &_sym ## _color, &_sym ## _color); +#include "colors.def" +#undef color + + wm_delete_atom = XInternAtom(display, "WM_DELETE_WINDOW", False); + wm_protocols_atom = XInternAtom(display, "WM_PROTOCOLS", False); + + XSelectInput(display, RootWindow(display, screen_num), SubstructureNotifyMask | SubstructureRedirectMask | PointerMotionMask | ButtonPressMask | ButtonReleaseMask); + XGrabKey(display, AnyKey, Mod1Mask, RootWindow(display, screen_num), False, GrabModeAsync, GrabModeAsync); + + XFlush(display); + + XSetInputFocus(display, RootWindow(display, screen_num), RevertToPointerRoot, CurrentTime); + + /* manage all preexisting windows */ + vwm_manage_existing(); + + /* create GC for logo drawing and window rubber-banding */ + gc = XCreateGC(display, RootWindow(display, screen_num), 0, NULL); + XSetSubwindowMode(display, gc, IncludeInferiors); + XSetFunction(display, gc, GXxor); + + /* first the logo color is the foreground */ + XSetForeground(display, gc, logo_color.pixel); + vwm_draw_logo(); + + /* change to the rubber-banding foreground color */ + XSetForeground(display, gc, rubberband_color.pixel); + + XClearWindow(display, RootWindow(display, screen_num)); + + /* set the pointer */ + pointer = XCreateFontCursor(display, XC_X_cursor); + XDefineCursor(display, RootWindow(display, screen_num), pointer); + + /* event loop */ + while (!done) { + XNextEvent(display, &event); + switch (event.type) { + case Expose: + VWM_TRACE("expose"); + break; + + case KeyPress: + VWM_TRACE("keypress"); + vwm_keypressed(event.xkey.window, &event); + break; + + case KeyRelease: + VWM_TRACE("keyrelease"); + vwm_keyreleased(event.xkey.window, &event); + break; + + case ButtonPress: + VWM_TRACE("buttonpresss"); + vwm_clicked(event.xbutton.window, &event); + break; + + case ButtonRelease: + VWM_TRACE("buttonrelease"); + break; + + case DestroyNotify: + VWM_TRACE("destroynotify"); + vwm_win_unmanage(event.xdestroywindow.window); + break; + + case CirculateNotify: + VWM_TRACE("circulatenotify"); + break; + + case ConfigureNotify: + VWM_TRACE("configurenotify"); + break; + + case UnmapNotify: + VWM_TRACE("unmapnotify"); + break; + + case CreateNotify: + VWM_TRACE("createnotify"); + vwm_win_manage(event.xcreatewindow.window, VWM_NOT_GRABBED); + break; + + case GravityNotify: + VWM_TRACE("gravitynotify"); + break; + + case MapNotify: + VWM_TRACE("mapnotify"); + break; + + case ReparentNotify: + VWM_TRACE("reparentnotify"); + break; + + case MotionNotify: + VWM_TRACE("motionnotify"); + break; + + case ConfigureRequest: { + XWindowChanges changes = { + .x = event.xconfigurerequest.x, /* TODO: for now I don't manipulate anything */ + .y = event.xconfigurerequest.y, + .width = event.xconfigurerequest.width, + .height = event.xconfigurerequest.height, + .border_width = WINDOW_BORDER_WIDTH /* except I do override whatever the border width may be */ + }; + + VWM_TRACE("configurerequest x=%i y=%i w=%i h=%i", changes.x, changes.y, changes.width, changes.height); + XConfigureWindow(display, event.xconfigurerequest.window, (event.xconfigurerequest.value_mask | CWBorderWidth), &changes); + break; + } + + case MapRequest: { + vwm_window_t *vwin; + + VWM_TRACE("maprequest"); + + vwin = vwm_win_lookup(event.xmap.window); + if(vwin && !vwin->mapped) { + int x = 0, y = 0; + XWindowAttributes attrs; + XWindowChanges changes; + + /* on initial mapping of a window we discover the coordinates and dimensions of the window */ + changes.x = x; + changes.y = y; + + vwin->mapped = 1; + XGetWMNormalHints(display, event.xmap.window, vwin->hints, &vwin->hints_supplied); + XGetWindowAttributes(display, event.xmap.window, &attrs); + + /* TODO: this is a good place to hook in a window placement algo */ + vwin->client.x = x; + vwin->client.y = y; + + vwin->client.height = attrs.height; + vwin->client.width = attrs.width; + + XConfigureWindow(display, event.xmap.window, (CWX | CWY), &changes); + } + + XMapWindow(display, event.xmap.window); + if(vwin->desktop->focused_window == vwin) { + XSync(display, False); + XSetInputFocus(display, vwin->window, RevertToPointerRoot, CurrentTime); + } + break; + } + + case MappingNotify: + VWM_TRACE("mapping notify"); + XRefreshKeyboardMapping(&event.xmapping); + break; + + default: + VWM_ERROR("Unhandled X op %i", event.type); + break; + } + } + + /* close connection to server */ + XFlush(display); + XCloseDisplay(display); + + return 0; +} diff --git a/vwm.h b/vwm.h new file mode 100644 index 0000000..57c2c3b --- /dev/null +++ b/vwm.h @@ -0,0 +1,50 @@ +#ifndef _VWM_H +#define _VWM_H + +#include +#include +#include +#include + +#include "list.h" + +#define VWM_ERROR(fmt, args...) fprintf(stderr, "%s:%i\t%s() "fmt"\n", __FILE__, __LINE__, __FUNCTION__, ##args) +#define VWM_PERROR(fmt, args...) fprintf(stderr, "%s:%i\t%s() "fmt"; %s\n", __FILE__, __LINE__, __FUNCTION__, ##args, strerror(errno)) +#define VWM_BUG(fmt, args...) fprintf(stderr, "BUG %s:%i\t%s() "fmt"; %s\n", __FILE__, __LINE__, __FUNCTION__, ##args, strerror(errno)) + +#ifdef TRACE +#define VWM_TRACE(fmt, args...) fprintf(stderr, "%s:%i\t%s() "fmt"\n", __FILE__, __LINE__, __FUNCTION__, ##args) +#else +#define VWM_TRACE(fmt, args...) +#endif + +typedef struct _vwm_box_t { + int x, y; + unsigned int width, height; +} vwm_box_t; + +typedef struct _vwm_desktop_t { + list_head_t desktops; /* global list of (virtual) desktops */ + list_head_t desktops_mru; /* global list of (virtual) desktops in MRU order */ + char *name; /* name of the desktop (TODO) */ + struct _vwm_window_t *focused_window; /* the focused window on this virtual desktop */ +} vwm_desktop_t; + +typedef struct _vwm_window_t { + list_head_t windows; /* global list of managed client windows */ + struct _vwm_desktop_t *desktop; /* desktop this window belongs to currently */ + char *name; /* client name */ + + vwm_box_t client; /* box of the configured client window relative to the root */ + + Window window; /* the X window being managed by vwm */ + + XSizeHints *hints; /* hints the client supplied */ + long hints_supplied; /* bitfield reflecting the hints the client supplied */ + + unsigned int fullscreened:2; /* is the window fullscreened (1)? is the window "allscreened" with the border obscured (2)? */ + unsigned int mapped:1; /* has mapping been requested on the window? */ + unsigned int shelved:1; /* is the window shelved? */ +} vwm_window_t; + +#endif -- cgit v1.2.3