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.TH DWM 1 dwm\-VERSION
.SH NAME
dwm \- dynamic window manager
.SH SYNOPSIS
.B dwm
.RB [ \-v ]
.SH DESCRIPTION
dwm is a dynamic window manager for X. It manages windows in tiled and
floating layouts. Either layout can be applied dynamically, optimizing the
environment for the application in use and the task performed.
.P
In tiled layout windows are managed in a master and stacking area. The master
area contains the window which currently needs most attention, whereas the
stacking area contains all other windows. In floating layout windows can be
resized and moved freely. Dialog windows are always managed floating,
regardless of the layout applied.
.P
Windows are grouped by tags. Each window can be tagged with one or multiple
tags. Selecting certain tags displays all windows with these tags.
.P
dwm contains a small status bar which displays all available tags, the layout,
the title of the focused window, and the text read from standard input. A
floating window is indicated with an empty square and a maximized
floating window is indicated with a filled square before the windows
title.  The selected tags are indicated with a different color. The tags of
the focused window are indicated with a filled square in the top left
corner.  The tags which are applied to one or more windows are indicated
with an empty square in the top left corner.
.P
dwm draws a small border around windows to indicate the focus state.
.SH OPTIONS
.TP
.B \-v
prints version information to standard output, then exits.
.SH USAGE
.SS Status bar
.TP
.B Standard input
is read and displayed in the status text area.
.TP
.B Button1
click on a tag label to display all windows with that tag, click on the layout
label toggles between tiled and floating layout.
.TP
.B Button3
click on a tag label adds/removes all windows with that tag to/from the view.
.TP
.B Mod1\-Button1
click on a tag label applies that tag to the focused window.
.TP
.B Mod1\-Button3
click on a tag label adds/removes that tag to/from the focused window.
.SS Keyboard commands
.TP
.B Mod1\-Shift\-Return
Start
.BR xterm.
.TP
.B Mod1\-Return
Zooms/cycles current window to/from master area (tiled layout only).
.TP
.B Mod1\-Tab
Toggles to the previously selected tags.
.TP
.B Mod1\-b
Shows/hides the status bar.
.TP
.B Mod1\-h
Decreases the master area width about 5% (tiled layout only).
.TP
.B Mod1\-j
Focus next window.
.TP
.B Mod1\-k
Focus previous window.
.TP
.B Mod1\-l
Increases the master area width about 5% (tiled layout only).
.TP
.B Mod1\-m
Maximizes current window (floating layout/window only).
.TP
.B Mod1\-r
Re-applies tagging rules to all windows.
.TP
.B Mod1\-Shift\-[1..n]
Apply
.RB nth
tag to current window.
.TP
.B Mod1\-Shift\-0
Apply all tags to current window.
.TP
.B Mod1\-Control\-Shift\-[1..n]
Add/remove
.B nth
tag to/from current window.
.TP
.B Mod1\-Shift\-c
Close focused window.
.TP
.B Mod1\-space
Toggle between tiled and floating layout (affects all windows).
.TP
.B Mod1\-Shift\-space
Toggle focused window between tiled and floating state.
.TP
.B Mod1\-[1..n]
View all windows with
.BR nth
tag.
.TP
.B Mod1\-0
View all windows with any tag.
.TP
.B Mod1\-Control\-[1..n]
Add/remove all windows with
.BR nth
tag to/from the view.
.TP
.B Mod1\-Shift\-q
Quit dwm.
.SS Mouse commands
.TP
.B Mod1\-Button1
Move current window while dragging. Tiled windows will be toggled to the floating state.
.TP
.B Mod1\-Button2
Zooms/cycles current window to/from master area. If it is floating (but not fixed) it will be toggled to the tiled state instead.
.TP
.B Mod1\-Button3
Resize current window while dragging. Tiled windows will be toggled to the floating state.
.SH CUSTOMIZATION
dwm is customized by creating a custom config.h and (re)compiling the source
code. This keeps it fast, secure and simple.
.SH SEE ALSO
.BR dmenu (1)
.SH BUGS
The status bar may display
.BR "EOF"
when dwm has been started by an X session manager like
.BR xdm (1),
because those close standard output before executing dwm.
.P
Java applications which use the XToolkit/XAWT backend may draw grey windows
only. The XToolkit/XAWT backend breaks ICCCM-compliance in recent JDK 1.5 and early
JDK 1.6 versions, because it assumes a reparenting window manager. As a workaround
you can use JDK 1.4 (which doesn't contain the XToolkit/XAWT backend) or you
can set the following environment variable (to use the older Motif
backend instead):
.BR AWT_TOOLKIT=MToolkit .
.P
Recent GTK 2.10.9+ versions contain a broken
.BR Save\-As
file dialog implementation,
which requests to reconfigure its window size in an endless loop. However, its
window is still respondable during this state, so you can simply ignore the flicker
until a new GTK version appears, which will fix this bug, approximately
GTK 2.10.12+ versions.
s 3 bits 3 bits 3 bits 2 bits 2 bits 0/1/2/4 bytes 0/1/2/4 bytes # Return next byte value in eax, with top 3 bytes cleared. # On reaching end of file, return 0xffffffff (Eof). read-byte-buffered: # f: (addr buffered-file) -> byte-or-Eof/eax: byte # . prologue 55/push-ebp 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp # . save registers 51/push-ecx 56/push-esi # esi = f 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 6/r32/esi 8/disp8 . # copy *(ebp+8) to esi # ecx = f->read 8b/copy 1/mod/*+disp8 6/rm32/esi . . . 1/r32/ecx 8/disp8 . # copy *(esi+8) to ecx # if (f->read >= f->write) populate stream from file 3b/compare 1/mod/*+disp8 6/rm32/esi . . . 1/r32/ecx 4/disp8 . # compare ecx with *(esi+4) 7c/jump-if-< $read-byte-buffered:from-stream/disp8 # . clear-stream(stream = f+4) # . . push args 8d/copy-address 1/mod/*+disp8 6/rm32/esi . . . 0/r32/eax 4/disp8 . # copy esi+4 to eax 50/push-eax # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # . f->read must now be 0; update its cache at ecx 31/xor 3/mod/direct 1/rm32/ecx . . . 1/r32/ecx . . # clear ecx # . eax = read(f->fd, stream = f+4) # . . push args 50/push-eax ff 6/subop/push 0/mod/indirect 6/rm32/esi . . . . . . # push *esi # . . call e8/call read/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp # if (eax == 0) return 0xffffffff 3d/compare-eax-and 0/imm32 75/jump-if-!= $read-byte-buffered:from-stream/disp8 b8/copy-to-eax 0xffffffff/imm32/Eof eb/jump $read-byte-buffered:end/disp8 $read-byte-buffered:from-stream: # byte-or-Eof = f->data[f->read] 31/xor 3/mod/direct 0/rm32/eax . . . 0/r32/eax . . # clear eax 8a/copy-byte 1/mod/*+disp8 4/rm32/sib 6/base/esi 1/index/ecx . 0/r32/AL 0x10/disp8 . # copy byte at *(esi+ecx+16) to AL # ++f->read ff 0/subop/increment 1/mod/*+disp8 6/rm32/esi . . . . 8/disp8 . # increment *(esi+8) $read-byte-buffered:end: # . restore registers 5e/pop-to-esi 59/pop-to-ecx # . epilogue 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp 5d/pop-to-ebp c3/return # - tests test-read-byte-buffered-single: # - check that read-byte-buffered returns first byte of 'file' # setup # . clear-stream(_test-stream) # . . push args 68/push _test-stream/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # . clear-stream(_test-buffered-file->buffer) # . . push args 68/push $_test-buffered-file->buffer/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # . write(_test-stream, "Ab") # . . push args 68/push "Ab"/imm32 68/push _test-stream/imm32 # . . call e8/call write/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp # read-byte-buffered(_test-buffered-file) # . . push args 68/push _test-buffered-file/imm32 # . . call e8/call read-byte-buffered/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # check-ints-equal(eax, 'A', msg) # . . push args 68/push "F - test-read-byte-buffered-single"/imm32 68/push 0x41/imm32 50/push-eax # . . call e8/call check-ints-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp # . end c3/return test-read-byte-buffered-multiple: # - call read-byte-buffered twice, check that second call returns second byte # setup # . clear-stream(_test-stream) # . . push args 68/push _test-stream/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # . clear-stream($_test-buffered-file->buffer) # . . push args 68/push $_test-buffered-file->buffer/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # . write(_test-stream, "Ab") # . . push args 68/push "Ab"/imm32 68/push _test-stream/imm32 # . . call e8/call write/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp # read-byte-buffered(_test-buffered-file) # . . push args 68/push _test-buffered-file/imm32 # . . call e8/call read-byte-buffered/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # read-byte-buffered(_test-buffered-file) # . . push args 68/push _test-buffered-file/imm32 # . . call e8/call read-byte-buffered/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # check-ints-equal(eax, 'b', msg) # . . push args 68/push "F - test-read-byte-buffered-multiple"/imm32 68/push 0x62/imm32 50/push-eax # . . call e8/call check-ints-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp # . end c3/return test-read-byte-buffered-end-of-file: # - call read-byte-buffered on an empty 'file', check that it returns Eof # setup # . clear-stream(_test-stream) # . . push args 68/push _test-stream/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # . clear-stream($_test-buffered-file->buffer) # . . push args 68/push $_test-buffered-file->buffer/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # read-byte-buffered(_test-buffered-file) # . . push args 68/push _test-buffered-file/imm32 # . . call e8/call read-byte-buffered/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # check-ints-equal(eax, 0xffffffff, msg) # . . push args 68/push "F - test-read-byte-buffered-end-of-file"/imm32 68/push 0xffffffff/imm32/Eof 50/push-eax # . . call e8/call check-ints-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp # . end c3/return test-read-byte-buffered-refills-buffer: # - consume buffered-file's buffer, check that next read-byte-buffered still works # setup # . clear-stream(_test-stream) # . . push args 68/push _test-stream/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # . clear-stream($_test-buffered-file->buffer) # . . push args 68/push $_test-buffered-file->buffer/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # . write(_test-stream, "Abcdefgh") # . . push args 68/push "Abcdefgh"/imm32 68/push _test-stream/imm32 # . . call e8/call write/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp # pretend buffer is full # . _test-buffered-file->read = 6 # >= _test-buffered-file->size b8/copy-to-eax _test-buffered-file/imm32 c7 0/subop/copy 1/mod/*+disp8 0/rm32/eax . . . . 8/disp8 6/imm32 # copy to *(eax+8) # read-byte-buffered(_test-buffered-file) # . . push args 68/push _test-buffered-file/imm32 # . . call e8/call read-byte-buffered/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # check-ints-equal(eax, 'A', msg) # . . push args 68/push "F - test-read-byte-buffered-refills-buffer"/imm32 68/push 0x41/imm32 50/push-eax # . . call e8/call check-ints-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp # . end c3/return # Return next byte value in eax, with top 3 bytes cleared. # Abort on reaching end of stream. read-byte: # s: (addr stream byte) -> result/eax: byte # . prologue 55/push-ebp 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp # . save registers 51/push-ecx 56/push-esi # esi = s 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 6/r32/esi 8/disp8 . # copy *(ebp+8) to esi # ecx = s->read 8b/copy 1/mod/*+disp8 6/rm32/esi . . . 1/r32/ecx 4/disp8 . # copy *(esi+4) to ecx # if (f->read >= f->write) abort 3b/compare 0/mod/indirect 6/rm32/esi . . . 1/r32/ecx . . # compare ecx with *esi 0f 8d/jump-if->= $read-byte:abort/disp32 # result = f->data[f->read] 31/xor 3/mod/direct 0/rm32/eax . . . 0/r32/eax . . # clear eax 8a/copy-byte 1/mod/*+disp8 4/rm32/sib 6/base/esi 1/index/ecx . 0/r32/AL 0xc/disp8 . # copy byte at *(esi+ecx+12) to AL # ++f->read ff 0/subop/increment 1/mod/*+disp8 6/rm32/esi . . . . 4/disp8 . # increment *(esi+4) $read-byte:end: # . restore registers 5e/pop-to-esi 59/pop-to-ecx # . epilogue 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp 5d/pop-to-ebp c3/return $read-byte:abort: # . _write(2/stderr, error) # . . push args 68/push "read-byte: empty stream\n"/imm32 68/push 2/imm32/stderr # . . call e8/call _write/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp # . syscall(exit, 1) bb/copy-to-ebx 1/imm32 e8/call syscall_exit/disp32 # never gets here == data # a test buffered file for _test-stream _test-buffered-file: # buffered-file # file descriptor or (addr stream byte) _test-stream/imm32 $_test-buffered-file->buffer: # current write index 0/imm32 # current read index 0/imm32 # size 6/imm32 # data 00 00 00 00 00 00 # 6 bytes _test-input-stream: # (stream byte) # current write index 0/imm32 # current read index 0/imm32 # size 0x100/imm32 # 256 bytes # data (16 lines x 16 bytes/line) 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 # a test buffered file for _test-input-stream _test-input-buffered-file: # buffered-file # file descriptor or (addr stream byte) _test-input-stream/imm32 $_test-input-buffered-file->buffer: # current write index 0/imm32 # current read index 0/imm32 # size 6/imm32 # data 00 00 00 00 00 00 # 6 bytes # . . vim:nowrap:textwidth=0