}
proc getcommitlines {commfd} {
- global commits parents cdate children nchildren
+ global commits parents cdate children
global commitlisted phase commitinfo nextupdate
global stopped redisplaying leftover
}
proc initgraph {} {
- global canvy canvy0 lineno numcommits lthickness nextcolor linespc
- global mainline sidelines
+ global canvy canvy0 lineno numcommits nextcolor linespc
+ global mainline mainlinearrow sidelines
global nchildren ncleft
+ global displist nhyperspace
allcanvs delete all
set nextcolor 0
set canvy $canvy0
set lineno -1
set numcommits 0
- set lthickness [expr {int($linespc / 9) + 1}]
catch {unset mainline}
+ catch {unset mainlinearrow}
catch {unset sidelines}
foreach id [array names nchildren] {
set ncleft($id) $nchildren($id)
}
+ set displist {}
+ set nhyperspace 0
}
proc bindline {t id} {
$canv bind $t <Button-1> "lineclick %x %y $id 1"
}
+# level here is an index in displist
proc drawcommitline {level} {
- global parents children nparents nchildren todo
+ global parents children nparents displist
global canv canv2 canv3 mainfont namefont canvy linespc
global lineid linehtag linentag linedtag commitinfo
global colormap numcommits currentparents dupparents
- global oldlevel oldnlines oldtodo
global idtags idline idheads
- global lineno lthickness mainline sidelines
- global commitlisted rowtextx idpos
+ global lineno lthickness mainline mainlinearrow sidelines
+ global commitlisted rowtextx idpos lastuse displist
+ global oldnlines olddlevel olddisplist
incr numcommits
incr lineno
- set id [lindex $todo $level]
+ set id [lindex $displist $level]
+ set lastuse($id) $lineno
set lineid($lineno) $id
set idline($id) $lineno
set ofill [expr {[info exists commitlisted($id)]? "blue": "white"}]
[list 0 0 0 [expr $y1 + 0.5 * $linespc + 2]]
if {[info exists mainline($id)]} {
lappend mainline($id) $x $y1
+ if {$mainlinearrow($id) ne "none"} {
+ set mainline($id) [trimdiagstart $mainline($id)]
+ }
set t [$canv create line $mainline($id) \
- -width $lthickness -fill $colormap($id)]
+ -width $lthickness -fill $colormap($id) \
+ -arrow $mainlinearrow($id)]
$canv lower $t
bindline $t $id
}
foreach ls $sidelines($id) {
set coords [lindex $ls 0]
set thick [lindex $ls 1]
+ set arrow [lindex $ls 2]
set t [$canv create line $coords -fill $colormap($id) \
- -width [expr {$thick * $lthickness}]]
+ -width [expr {$thick * $lthickness}] -arrow $arrow]
$canv lower $t
bindline $t $id
}
-fill $ofill -outline black -width 1]
$canv raise $t
$canv bind $t <1> {selcanvline {} %x %y}
- set xt [xcoord [llength $todo] $level $lineno]
+ set xt [xcoord [llength $displist] $level $lineno]
if {[llength $currentparents] > 2} {
set xt [expr {$xt + ([llength $currentparents] - 2) * $linespc}]
}
-text $name -font $namefont]
set linedtag($lineno) [$canv3 create text 3 $y1 -anchor w \
-text $date -font $mainfont]
+
+ set olddlevel $level
+ set olddisplist $displist
+ set oldnlines [llength $displist]
}
proc drawtags {id x xt y1} {
return $xt
}
-proc updatetodo {level noshortcut} {
- global currentparents ncleft todo
- global mainline oldlevel oldtodo oldnlines
- global canvy linespc mainline
- global commitinfo lineno xspc1
-
- set oldlevel $level
- set oldtodo $todo
- set oldnlines [llength $todo]
- if {!$noshortcut && [llength $currentparents] == 1} {
- set p [lindex $currentparents 0]
- if {$ncleft($p) == 1 && [lsearch -exact $todo $p] < 0} {
- set ncleft($p) 0
- set x [xcoord $level $level $lineno]
- set y [expr $canvy - $linespc]
- set mainline($p) [list $x $y]
- set todo [lreplace $todo $level $level $p]
- set xspc1([expr {$lineno + 1}]) $xspc1($lineno)
- return 0
- }
- }
-
- set todo [lreplace $todo $level $level]
- set i $level
- foreach p $currentparents {
- incr ncleft($p) -1
- set k [lsearch -exact $todo $p]
- if {$k < 0} {
- set todo [linsert $todo $i $p]
- incr i
- }
- }
- return 1
-}
-
proc notecrossings {id lo hi corner} {
- global oldtodo crossings cornercrossings
+ global olddisplist crossings cornercrossings
for {set i $lo} {[incr i] < $hi} {} {
- set p [lindex $oldtodo $i]
+ set p [lindex $olddisplist $i]
if {$p == {}} continue
if {$i == $corner} {
if {![info exists cornercrossings($id)]
return $x
}
-proc drawslants {level} {
- global canv mainline sidelines canvx0 canvy xspc1 xspc2 lthickness
- global oldlevel oldtodo todo currentparents dupparents
+# it seems Tk can't draw arrows on the end of diagonal line segments...
+proc trimdiagend {line} {
+ while {[llength $line] > 4} {
+ set x1 [lindex $line end-3]
+ set y1 [lindex $line end-2]
+ set x2 [lindex $line end-1]
+ set y2 [lindex $line end]
+ if {($x1 == $x2) != ($y1 == $y2)} break
+ set line [lreplace $line end-1 end]
+ }
+ return $line
+}
+
+proc trimdiagstart {line} {
+ while {[llength $line] > 4} {
+ set x1 [lindex $line 0]
+ set y1 [lindex $line 1]
+ set x2 [lindex $line 2]
+ set y2 [lindex $line 3]
+ if {($x1 == $x2) != ($y1 == $y2)} break
+ set line [lreplace $line 0 1]
+ }
+ return $line
+}
+
+proc drawslants {id needonscreen nohs} {
+ global canv mainline mainlinearrow sidelines
+ global canvx0 canvy xspc1 xspc2 lthickness
+ global currentparents dupparents
global lthickness linespc canvy colormap lineno geometry
- global maxgraphpct
+ global maxgraphpct maxwidth
+ global displist onscreen lastuse
+ global parents commitlisted
+ global oldnlines olddlevel olddisplist
+ global nhyperspace numcommits nnewparents
+
+ if {$lineno < 0} {
+ lappend displist $id
+ set onscreen($id) 1
+ return 0
+ }
+
+ set y1 [expr {$canvy - $linespc}]
+ set y2 $canvy
+
+ # work out what we need to get back on screen
+ set reins {}
+ if {$onscreen($id) < 0} {
+ # next to do isn't displayed, better get it on screen...
+ lappend reins [list $id 0]
+ }
+ # make sure all the previous commits's parents are on the screen
+ foreach p $currentparents {
+ if {$onscreen($p) < 0} {
+ lappend reins [list $p 0]
+ }
+ }
+ # bring back anything requested by caller
+ if {$needonscreen ne {}} {
+ lappend reins $needonscreen
+ }
+
+ # try the shortcut
+ if {$currentparents == $id && $onscreen($id) == 0 && $reins eq {}} {
+ set dlevel $olddlevel
+ set x [xcoord $dlevel $dlevel $lineno]
+ set mainline($id) [list $x $y1]
+ set mainlinearrow($id) none
+ set lastuse($id) $lineno
+ set displist [lreplace $displist $dlevel $dlevel $id]
+ set onscreen($id) 1
+ set xspc1([expr {$lineno + 1}]) $xspc1($lineno)
+ return $dlevel
+ }
+
+ # update displist
+ set displist [lreplace $displist $olddlevel $olddlevel]
+ set j $olddlevel
+ foreach p $currentparents {
+ set lastuse($p) $lineno
+ if {$onscreen($p) == 0} {
+ set displist [linsert $displist $j $p]
+ set onscreen($p) 1
+ incr j
+ }
+ }
+ if {$onscreen($id) == 0} {
+ lappend displist $id
+ }
+
+ # remove the null entry if present
+ set nullentry [lsearch -exact $displist {}]
+ if {$nullentry >= 0} {
+ set displist [lreplace $displist $nullentry $nullentry]
+ }
+
+ # bring back the ones we need now (if we did it earlier
+ # it would change displist and invalidate olddlevel)
+ foreach pi $reins {
+ # test again in case of duplicates in reins
+ set p [lindex $pi 0]
+ if {$onscreen($p) < 0} {
+ set onscreen($p) 1
+ set lastuse($p) $lineno
+ set displist [linsert $displist [lindex $pi 1] $p]
+ incr nhyperspace -1
+ }
+ }
+
+ set lastuse($id) $lineno
+
+ # see if we need to make any lines jump off into hyperspace
+ set displ [llength $displist]
+ if {$displ > $maxwidth} {
+ set ages {}
+ foreach x $displist {
+ lappend ages [list $lastuse($x) $x]
+ }
+ set ages [lsort -integer -index 0 $ages]
+ set k 0
+ while {$displ > $maxwidth} {
+ set use [lindex $ages $k 0]
+ set victim [lindex $ages $k 1]
+ if {$use >= $lineno - 5} break
+ incr k
+ if {[lsearch -exact $nohs $victim] >= 0} continue
+ set i [lsearch -exact $displist $victim]
+ set displist [lreplace $displist $i $i]
+ set onscreen($victim) -1
+ incr nhyperspace
+ incr displ -1
+ if {$i < $nullentry} {
+ incr nullentry -1
+ }
+ set x [lindex $mainline($victim) end-1]
+ lappend mainline($victim) $x $y1
+ set line [trimdiagend $mainline($victim)]
+ set arrow "last"
+ if {$mainlinearrow($victim) ne "none"} {
+ set line [trimdiagstart $line]
+ set arrow "both"
+ }
+ lappend sidelines($victim) [list $line 1 $arrow]
+ unset mainline($victim)
+ }
+ }
+
+ set dlevel [lsearch -exact $displist $id]
+
+ # If we are reducing, put in a null entry
+ if {$displ < $oldnlines} {
+ # does the next line look like a merge?
+ # i.e. does it have > 1 new parent?
+ if {$nnewparents($id) > 1} {
+ set i [expr {$dlevel + 1}]
+ } elseif {$nnewparents([lindex $olddisplist $olddlevel]) == 0} {
+ set i $olddlevel
+ if {$nullentry >= 0 && $nullentry < $i} {
+ incr i -1
+ }
+ } elseif {$nullentry >= 0} {
+ set i $nullentry
+ while {$i < $displ
+ && [lindex $olddisplist $i] == [lindex $displist $i]} {
+ incr i
+ }
+ } else {
+ set i $olddlevel
+ if {$dlevel >= $i} {
+ incr i
+ }
+ }
+ if {$i < $displ} {
+ set displist [linsert $displist $i {}]
+ incr displ
+ if {$dlevel >= $i} {
+ incr dlevel
+ }
+ }
+ }
# decide on the line spacing for the next line
set lj [expr {$lineno + 1}]
set maxw [expr {$maxgraphpct * $geometry(canv1) / 100}]
- set n [llength $todo]
- if {$n <= 1 || $canvx0 + $n * $xspc2 <= $maxw} {
+ if {$displ <= 1 || $canvx0 + $displ * $xspc2 <= $maxw} {
set xspc1($lj) $xspc2
} else {
- set xspc1($lj) [expr {($maxw - $canvx0 - $xspc2) / ($n - 1)}]
+ set xspc1($lj) [expr {($maxw - $canvx0 - $xspc2) / ($displ - 1)}]
if {$xspc1($lj) < $lthickness} {
set xspc1($lj) $lthickness
}
}
-
- set y1 [expr $canvy - $linespc]
- set y2 $canvy
+
+ foreach idi $reins {
+ set id [lindex $idi 0]
+ set j [lsearch -exact $displist $id]
+ set xj [xcoord $j $dlevel $lj]
+ set mainline($id) [list $xj $y2]
+ set mainlinearrow($id) first
+ }
+
set i -1
- foreach id $oldtodo {
+ foreach id $olddisplist {
incr i
if {$id == {}} continue
- set xi [xcoord $i $oldlevel $lineno]
- if {$i == $oldlevel} {
+ if {$onscreen($id) <= 0} continue
+ set xi [xcoord $i $olddlevel $lineno]
+ if {$i == $olddlevel} {
foreach p $currentparents {
- set j [lsearch -exact $todo $p]
+ set j [lsearch -exact $displist $p]
set coords [list $xi $y1]
- set xj [xcoord $j $level $lj]
+ set xj [xcoord $j $dlevel $lj]
if {$xj < $xi - $linespc} {
lappend coords [expr {$xj + $linespc}] $y1
notecrossings $p $j $i [expr {$j + 1}]
if {[lsearch -exact $dupparents $p] >= 0} {
# draw a double-width line to indicate the doubled parent
lappend coords $xj $y2
- lappend sidelines($p) [list $coords 2]
+ lappend sidelines($p) [list $coords 2 none]
if {![info exists mainline($p)]} {
set mainline($p) [list $xj $y2]
+ set mainlinearrow($p) none
}
} else {
# normal case, no parent duplicated
lappend coords $xj $yb
}
set mainline($p) $coords
+ set mainlinearrow($p) none
} else {
lappend coords $xj $yb
if {$yb < $y2} {
lappend coords $xj $y2
}
- lappend sidelines($p) [list $coords 1]
+ lappend sidelines($p) [list $coords 1 none]
}
}
}
} else {
set j $i
- if {[lindex $todo $i] != $id} {
- set j [lsearch -exact $todo $id]
+ if {[lindex $displist $i] != $id} {
+ set j [lsearch -exact $displist $id]
}
if {$j != $i || $xspc1($lineno) != $xspc1($lj)
- || ($oldlevel <= $i && $i <= $level)
- || ($level <= $i && $i <= $oldlevel)} {
- set xj [xcoord $j $level $lj]
+ || ($olddlevel <= $i && $i <= $dlevel)
+ || ($dlevel <= $i && $i <= $olddlevel)} {
+ set xj [xcoord $j $dlevel $lj]
set dx [expr {abs($xi - $xj)}]
set yb $y2
if {0 && $dx < $linespc} {
}
}
}
+ return $dlevel
+}
+
+# search for x in a list of lists
+proc llsearch {llist x} {
+ set i 0
+ foreach l $llist {
+ if {$l == $x || [lsearch -exact $l $x] >= 0} {
+ return $i
+ }
+ incr i
+ }
+ return -1
+}
+
+proc drawmore {reading} {
+ global displayorder numcommits ncmupdate nextupdate
+ global stopped nhyperspace parents commitlisted
+ global maxwidth onscreen displist currentparents olddlevel
+
+ set n [llength $displayorder]
+ while {$numcommits < $n} {
+ set id [lindex $displayorder $numcommits]
+ set ctxend [expr {$numcommits + 10}]
+ if {!$reading && $ctxend > $n} {
+ set ctxend $n
+ }
+ set dlist {}
+ if {$numcommits > 0} {
+ set dlist [lreplace $displist $olddlevel $olddlevel]
+ set i $olddlevel
+ foreach p $currentparents {
+ if {$onscreen($p) == 0} {
+ set dlist [linsert $dlist $i $p]
+ incr i
+ }
+ }
+ }
+ set nohs {}
+ set reins {}
+ set isfat [expr {[llength $dlist] > $maxwidth}]
+ if {$nhyperspace > 0 || $isfat} {
+ if {$ctxend > $n} break
+ # work out what to bring back and
+ # what we want to don't want to send into hyperspace
+ set room 1
+ for {set k $numcommits} {$k < $ctxend} {incr k} {
+ set x [lindex $displayorder $k]
+ set i [llsearch $dlist $x]
+ if {$i < 0} {
+ set i [llength $dlist]
+ lappend dlist $x
+ }
+ if {[lsearch -exact $nohs $x] < 0} {
+ lappend nohs $x
+ }
+ if {$reins eq {} && $onscreen($x) < 0 && $room} {
+ set reins [list $x $i]
+ }
+ set newp {}
+ if {[info exists commitlisted($x)]} {
+ set right 0
+ foreach p $parents($x) {
+ if {[llsearch $dlist $p] < 0} {
+ lappend newp $p
+ if {[lsearch -exact $nohs $p] < 0} {
+ lappend nohs $p
+ }
+ if {$reins eq {} && $onscreen($p) < 0 && $room} {
+ set reins [list $p [expr {$i + $right}]]
+ }
+ }
+ set right 1
+ }
+ }
+ set l [lindex $dlist $i]
+ if {[llength $l] == 1} {
+ set l $newp
+ } else {
+ set j [lsearch -exact $l $x]
+ set l [concat [lreplace $l $j $j] $newp]
+ }
+ set dlist [lreplace $dlist $i $i $l]
+ if {$room && $isfat && [llength $newp] <= 1} {
+ set room 0
+ }
+ }
+ }
+
+ set dlevel [drawslants $id $reins $nohs]
+ drawcommitline $dlevel
+ if {[clock clicks -milliseconds] >= $nextupdate
+ && $numcommits >= $ncmupdate} {
+ doupdate $reading
+ if {$stopped} break
+ }
+ }
+}
+
+# level here is an index in todo
+proc updatetodo {level noshortcut} {
+ global ncleft todo nnewparents
+ global commitlisted parents onscreen
+
+ set id [lindex $todo $level]
+ set olds {}
+ if {[info exists commitlisted($id)]} {
+ foreach p $parents($id) {
+ if {[lsearch -exact $olds $p] < 0} {
+ lappend olds $p
+ }
+ }
+ }
+ if {!$noshortcut && [llength $olds] == 1} {
+ set p [lindex $olds 0]
+ if {$ncleft($p) == 1 && [lsearch -exact $todo $p] < 0} {
+ set ncleft($p) 0
+ set todo [lreplace $todo $level $level $p]
+ set onscreen($p) 0
+ set nnewparents($id) 1
+ return 0
+ }
+ }
+
+ set todo [lreplace $todo $level $level]
+ set i $level
+ set n 0
+ foreach p $olds {
+ incr ncleft($p) -1
+ set k [lsearch -exact $todo $p]
+ if {$k < 0} {
+ set todo [linsert $todo $i $p]
+ set onscreen($p) 0
+ incr i
+ incr n
+ }
+ }
+ set nnewparents($id) $n
+
+ return 1
}
proc decidenext {{noread 0}} {
- global parents children nchildren ncleft todo
- global canv canv2 canv3 mainfont namefont canvy linespc
+ global ncleft todo
global datemode cdate
global commitinfo
- global currentparents oldlevel oldnlines oldtodo
- global lineno lthickness
-
- # remove the null entry if present
- set nullentry [lsearch -exact $todo {}]
- if {$nullentry >= 0} {
- set todo [lreplace $todo $nullentry $nullentry]
- }
# choose which one to do next time around
set todol [llength $todo]
return -1
}
- # If we are reducing, put in a null entry
- if {$todol < $oldnlines} {
- if {$nullentry >= 0} {
- set i $nullentry
- while {$i < $todol
- && [lindex $oldtodo $i] == [lindex $todo $i]} {
- incr i
- }
- } else {
- set i $oldlevel
- if {$level >= $i} {
- incr i
- }
- }
- if {$i < $todol} {
- set todo [linsert $todo $i {}]
- if {$level >= $i} {
- incr level
- }
- }
- }
return $level
}
proc drawcommit {id} {
global phase todo nchildren datemode nextupdate
- global startcommits numcommits ncmupdate
+ global numcommits ncmupdate displayorder todo onscreen
if {$phase != "incrdraw"} {
set phase incrdraw
- set todo $id
- set startcommits $id
+ set displayorder {}
+ set todo {}
initgraph
- drawcommitline 0
- updatetodo 0 $datemode
- } else {
- if {$nchildren($id) == 0} {
- lappend todo $id
- lappend startcommits $id
+ }
+ if {$nchildren($id) == 0} {
+ lappend todo $id
+ set onscreen($id) 0
+ }
+ set level [decidenext 1]
+ if {$level == {} || $id != [lindex $todo $level]} {
+ return
+ }
+ while 1 {
+ lappend displayorder [lindex $todo $level]
+ if {[updatetodo $level $datemode]} {
+ set level [decidenext 1]
+ if {$level == {}} break
}
- set level [decidenext 1]
- if {$level == {} || $id != [lindex $todo $level]} {
- return
- }
- while 1 {
- drawslants $level
- drawcommitline $level
- if {[updatetodo $level $datemode]} {
- set level [decidenext 1]
- if {$level == {}} break
- }
- set id [lindex $todo $level]
- if {![info exists commitlisted($id)]} {
- break
- }
- if {[clock clicks -milliseconds] >= $nextupdate
- && $numcommits >= $ncmupdate} {
- doupdate 1
- if {$stopped} break
- }
+ set id [lindex $todo $level]
+ if {![info exists commitlisted($id)]} {
+ break
}
}
+ drawmore 1
}
proc finishcommits {} {
global phase
- global startcommits
global canv mainfont ctext maincursor textcursor
if {$phase != "incrdraw"} {
-font $mainfont -tags textitems
set phase {}
} else {
- set level [decidenext]
- drawslants $level
- drawrest $level [llength $startcommits]
+ drawrest
}
. config -cursor $maincursor
settextcursor $textcursor
}
proc drawgraph {} {
- global nextupdate startmsecs startcommits todo ncmupdate
+ global nextupdate startmsecs ncmupdate
+ global displayorder onscreen
- if {$startcommits == {}} return
+ if {$displayorder == {}} return
set startmsecs [clock clicks -milliseconds]
set nextupdate [expr $startmsecs + 100]
set ncmupdate 1
initgraph
- set todo [lindex $startcommits 0]
- drawrest 0 1
+ foreach id $displayorder {
+ set onscreen($id) 0
+ }
+ drawmore 0
}
-proc drawrest {level startix} {
+proc drawrest {} {
global phase stopped redisplaying selectedline
- global datemode currentparents todo
+ global datemode todo displayorder
global numcommits ncmupdate
- global nextupdate startmsecs startcommits idline
+ global nextupdate startmsecs idline
+ set level [decidenext]
if {$level >= 0} {
set phase drawgraph
- set startid [lindex $startcommits $startix]
- set startline -1
- if {$startid != {}} {
- set startline $idline($startid)
- }
while 1 {
- if {$stopped} break
- drawcommitline $level
+ lappend displayorder [lindex $todo $level]
set hard [updatetodo $level $datemode]
- if {$numcommits == $startline} {
- lappend todo $startid
- set hard 1
- incr startix
- set startid [lindex $startcommits $startix]
- set startline -1
- if {$startid != {}} {
- set startline $idline($startid)
- }
- }
if {$hard} {
set level [decidenext]
if {$level < 0} break
- drawslants $level
- }
- if {[clock clicks -milliseconds] >= $nextupdate
- && $numcommits >= $ncmupdate} {
- doupdate 0
}
}
+ drawmore 0
}
set phase {}
set drawmsecs [expr [clock clicks -milliseconds] - $startmsecs]
proc selectline {l isnew} {
global canv canv2 canv3 ctext commitinfo selectedline
global lineid linehtag linentag linedtag
- global canvy0 linespc parents nparents children nchildren
+ global canvy0 linespc parents nparents children
global cflist currentid sha1entry
global commentend idtags idline
proc setcoords {} {
global linespc charspc canvx0 canvy0 mainfont
- global xspc1 xspc2
+ global xspc1 xspc2 lthickness
set linespc [font metrics $mainfont -linespace]
set charspc [font measure $mainfont "m"]
set canvy0 [expr 3 + 0.5 * $linespc]
set canvx0 [expr 3 + 0.5 * $linespc]
+ set lthickness [expr {int($linespc / 9) + 1}]
set xspc1(0) $linespc
set xspc2 $linespc
}
set findmergefiles 0
set gaudydiff 0
set maxgraphpct 50
+set maxwidth 16
set colors {green red blue magenta darkgrey brown orange}
projects / gitk / commitdiff