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gitk: Implement multiple views

With this, gitk can know about the graphs for multiple sets of files
and directories of interest.  Each set of files/dirs and its graph is
called a "view".  There is always the "All files" view, which is the
complete graph showing all commits.  If files or dirs are specified
on the command line, a "Command line" view is automatically created.
Users can create new views and switch between them, and can delete
any view except the "All files" view.

This required a bit of reengineering.  In particular, some more things
that were arrays have now become lists.  The idrowranges array is still
used while the graph is being laid out, but for rows that have been laid
out we use the rowrangelist list instead.  The cornercrossings and
crossings arrays no longer exist, and instead we compute the crossings
when needed (in assigncolor).

Still to be done: make the back/forward buttons switch views as necessary;
make the updatecommits function work right; preserve the selection if
possible when the new view has to be read in; fix the case when the user
switches away from the current view while we are still reading it in
and laying it out; further optimizations.

Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Paul Mackerras 2006-04-04 10:16:22 +10:00
parent 79b2c75e04
commit 50b44eceed

454
gitk
View file

@ -17,19 +17,38 @@ proc gitdir {} {
}
proc parse_args {rargs} {
global parsed_args
global parsed_args cmdline_files
set parsed_args {}
set cmdline_files {}
if {[catch {
set parse_args [concat --default HEAD $rargs]
set parsed_args [split [eval exec git-rev-parse $parse_args] "\n"]
set args [split [eval exec git-rev-parse $parse_args] "\n"]
set i 0
foreach arg $args {
if {![regexp {^[0-9a-f]{40}$} $arg]} {
if {$arg eq "--"} {
incr i
}
set cmdline_files [lrange $args $i end]
break
}
lappend parsed_args $arg
incr i
}
}]} {
# if git-rev-parse failed for some reason...
if {$rargs == {}} {
set rargs HEAD
set i [lsearch -exact $rargs "--"]
if {$i >= 0} {
set cmdline_files [lrange $rargs [expr {$i+1}] end]
set rargs [lrange $rargs 0 [expr {$i-1}]]
}
if {$rargs == {}} {
set parsed_args HEAD
} else {
set parsed_args $rargs
}
set parsed_args $rargs
}
return $parsed_args
}
proc start_rev_list {rlargs} {
@ -65,7 +84,7 @@ proc getcommits {rargs} {
global phase canv mainfont
set phase getcommits
start_rev_list [parse_args $rargs]
start_rev_list $rargs
$canv delete all
$canv create text 3 3 -anchor nw -text "Reading commits..." \
-font $mainfont -tags textitems
@ -141,11 +160,12 @@ proc getcommitlines {commfd} {
set id [lindex $ids 0]
if {$listed} {
set olds [lrange $ids 1 end]
if {[llength $olds] > 1} {
set olds [lsort -unique $olds]
}
set i 0
foreach p $olds {
lappend children($p) $id
if {$i == 0 || [lsearch -exact $olds $p] >= $i} {
lappend children($p) $id
}
incr i
}
} else {
set olds {}
@ -196,18 +216,18 @@ proc readcommit {id} {
parsecommit $id $contents 0
}
proc updatecommits {rargs} {
proc updatecommits {} {
global parsed_args
unselectline
stopfindproc
foreach v {colormap selectedline matchinglines treediffs
mergefilelist currentid rowtextx commitrow
rowidlist rowoffsets idrowranges idrangedrawn iddrawn
linesegends crossings cornercrossings} {
foreach v {matchinglines treediffs currentid} {
global $v
catch {unset $v}
}
allcanvs delete all
clear_display
readrefs
getcommits $rargs
getcommits $parsed_args
}
proc parsecommit {id contents listed} {
@ -344,12 +364,18 @@ proc makewindow {rargs} {
menu .bar
.bar add cascade -label "File" -menu .bar.file
menu .bar.file
.bar.file add command -label "Update" -command [list updatecommits $rargs]
.bar.file add command -label "Update" -command updatecommits
.bar.file add command -label "Reread references" -command rereadrefs
.bar.file add command -label "Quit" -command doquit
menu .bar.edit
.bar add cascade -label "Edit" -menu .bar.edit
.bar.edit add command -label "Preferences" -command doprefs
menu .bar.view
.bar add cascade -label "View" -menu .bar.view
.bar.view add command -label "New view..." -command newview
.bar.view add command -label "Delete view" -command delview -state disabled
.bar.view add separator
.bar.view add command -label "All files" -command {showview 0}
menu .bar.help
.bar add cascade -label "Help" -menu .bar.help
.bar.help add command -label "About gitk" -command about
@ -718,6 +744,169 @@ Use and redistribute under the terms of the GNU General Public License} \
pack $w.ok -side bottom
}
proc newview {} {
global newviewname nextviewnum newviewtop
set top .gitkview
if {[winfo exists $top]} {
raise $top
return
}
set newviewtop $top
toplevel $top
wm title $top "Gitk view definition"
label $top.nl -text "Name"
entry $top.name -width 20 -textvariable newviewname
set newviewname "View $nextviewnum"
grid $top.nl $top.name -sticky w
label $top.l -text "Files and directories to include:"
grid $top.l - -sticky w -pady 10
text $top.t -width 30 -height 10
grid $top.t - -sticky w
frame $top.buts
button $top.buts.ok -text "OK" -command newviewok
button $top.buts.can -text "Cancel" -command newviewcan
grid $top.buts.ok $top.buts.can
grid columnconfigure $top.buts 0 -weight 1 -uniform a
grid columnconfigure $top.buts 1 -weight 1 -uniform a
grid $top.buts - -pady 10 -sticky ew
focus $top.t
}
proc newviewok {} {
global newviewtop nextviewnum
global viewname viewfiles
set n $nextviewnum
incr nextviewnum
set viewname($n) [$newviewtop.name get]
set files {}
foreach f [split [$newviewtop.t get 0.0 end] "\n"] {
set ft [string trim $f]
if {$ft ne {}} {
lappend files $ft
}
}
set viewfiles($n) $files
catch {destroy $newviewtop}
unset newviewtop
.bar.view add command -label $viewname($n) -command [list showview $n]
after idle showview $n
}
proc newviewcan {} {
global newviewtop
catch {destroy $newviewtop}
unset newviewtop
}
proc delview {} {
global curview viewdata
if {$curview == 0} return
set nmenu [.bar.view index end]
set targetcmd [list showview $curview]
for {set i 5} {$i <= $nmenu} {incr i} {
if {[.bar.view entrycget $i -command] eq $targetcmd} {
.bar.view delete $i
break
}
}
set viewdata($curview) {}
showview 0
}
proc saveview {} {
global curview viewdata
global displayorder parentlist childlist rowidlist rowoffsets
global rowrangelist commitlisted
}
proc showview {n} {
global curview viewdata viewfiles
global displayorder parentlist childlist rowidlist rowoffsets
global colormap rowtextx commitrow
global numcommits rowrangelist commitlisted idrowranges
global selectedline currentid canv canvy0
global matchinglines treediffs
global parsed_args
if {$n == $curview} return
set selid {}
if {[info exists selectedline]} {
set selid $currentid
set y [yc $selectedline]
set ymax [lindex [$canv cget -scrollregion] 3]
set span [$canv yview]
set ytop [expr {[lindex $span 0] * $ymax}]
set ybot [expr {[lindex $span 1] * $ymax}]
if {$ytop < $y && $y < $ybot} {
set yscreen [expr {$y - $ytop}]
} else {
set yscreen [expr {($ybot - $ytop) / 2}]
}
}
unselectline
stopfindproc
if {![info exists viewdata($curview)]} {
set viewdata($curview) \
[list $displayorder $parentlist $childlist $rowidlist \
$rowoffsets $rowrangelist $commitlisted]
}
catch {unset matchinglines}
catch {unset treediffs}
clear_display
set curview $n
.bar.view entryconf 2 -state [expr {$n == 0? "disabled": "normal"}]
if {![info exists viewdata($n)]} {
set args $parsed_args
if {$viewfiles($n) ne {}} {
set args [concat $args "--" $viewfiles($n)]
}
getcommits $args
return
}
set displayorder [lindex $viewdata($n) 0]
set parentlist [lindex $viewdata($n) 1]
set childlist [lindex $viewdata($n) 2]
set rowidlist [lindex $viewdata($n) 3]
set rowoffsets [lindex $viewdata($n) 4]
set rowrangelist [lindex $viewdata($n) 5]
set commitlisted [lindex $viewdata($n) 6]
set numcommits [llength $displayorder]
catch {unset colormap}
catch {unset rowtextx}
catch {unset commitrow}
catch {unset idrowranges}
set curview $n
set row 0
foreach id $displayorder {
set commitrow($id) $row
incr row
}
setcanvscroll
set yf 0
set row 0
if {$selid ne {} && [info exists commitrow($selid)]} {
set row $commitrow($selid)
# try to get the selected row in the same position on the screen
set ymax [lindex [$canv cget -scrollregion] 3]
set ytop [expr {[yc $row] - $yscreen}]
if {$ytop < 0} {
set ytop 0
}
set yf [expr {$ytop * 1.0 / $ymax}]
}
allcanvs yview moveto $yf
drawvisible
selectline $row 0
}
proc shortids {ids} {
set res {}
foreach id $ids {
@ -834,10 +1023,12 @@ proc makeuparrow {oid x y z} {
proc initlayout {} {
global rowidlist rowoffsets displayorder commitlisted
global rowlaidout rowoptim
global idinlist rowchk
global idinlist rowchk rowrangelist idrowranges
global commitidx numcommits canvxmax canv
global nextcolor
global parentlist childlist children
global colormap rowtextx commitrow
global linesegends
set commitidx 0
set numcommits 0
@ -845,6 +1036,7 @@ proc initlayout {} {
set commitlisted {}
set parentlist {}
set childlist {}
set rowrangelist {{}}
catch {unset children}
set nextcolor 0
set rowidlist {{}}
@ -854,6 +1046,11 @@ proc initlayout {} {
set rowlaidout 0
set rowoptim 0
set canvxmax [$canv cget -width]
catch {unset colormap}
catch {unset rowtextx}
catch {unset commitrow}
catch {unset idrowranges}
catch {unset linesegends}
}
proc setcanvscroll {} {
@ -892,7 +1089,6 @@ proc layoutmore {} {
set rowlaidout [layoutrows $row $commitidx 0]
set orow [expr {$rowlaidout - $uparrowlen - 1}]
if {$orow > $rowoptim} {
checkcrossings $rowoptim $orow
optimize_rows $rowoptim 0 $orow
set rowoptim $orow
}
@ -947,7 +1143,7 @@ proc layoutrows {row endrow last} {
global childlist parentlist
global idrowranges linesegends
global commitidx
global idinlist rowchk
global idinlist rowchk rowrangelist
set idlist [lindex $rowidlist $row]
set offs [lindex $rowoffsets $row]
@ -1008,6 +1204,7 @@ proc layoutrows {row endrow last} {
}
if {[info exists idrowranges($id)]} {
lappend idrowranges($id) $row
lappend rowrangelist $idrowranges($id)
}
incr row
set offs [ntimes [llength $idlist] 0]
@ -1068,7 +1265,7 @@ proc addextraid {id row} {
proc layouttail {} {
global rowidlist rowoffsets idinlist commitidx
global idrowranges
global idrowranges rowrangelist
set row $commitidx
set idlist [lindex $rowidlist $row]
@ -1078,6 +1275,7 @@ proc layouttail {} {
addextraid $id $row
unset idinlist($id)
lappend idrowranges($id) $row
lappend rowrangelist $idrowranges($id)
incr row
set offs [ntimes $col 0]
set idlist [lreplace $idlist $col $col]
@ -1091,6 +1289,7 @@ proc layouttail {} {
lset rowoffsets $row 0
makeuparrow $id 0 $row 0
lappend idrowranges($id) $row
lappend rowrangelist $idrowranges($id)
incr row
lappend rowidlist {}
lappend rowoffsets {}
@ -1107,7 +1306,7 @@ proc insert_pad {row col npad} {
}
proc optimize_rows {row col endrow} {
global rowidlist rowoffsets idrowranges linesegends displayorder
global rowidlist rowoffsets idrowranges displayorder
for {} {$row < $endrow} {incr row} {
set idlist [lindex $rowidlist $row]
@ -1240,13 +1439,33 @@ proc linewidth {id} {
return $wid
}
proc rowranges {id} {
global idrowranges commitrow numcommits rowrangelist
set ranges {}
if {[info exists commitrow($id)] && $commitrow($id) < $numcommits} {
set ranges [lindex $rowrangelist $commitrow($id)]
} elseif {[info exists idrowranges($id)]} {
set ranges $idrowranges($id)
}
return $ranges
}
proc drawlineseg {id i} {
global rowoffsets rowidlist idrowranges
global rowoffsets rowidlist
global displayorder
global canv colormap linespc
global numcommits commitrow
set startrow [lindex $idrowranges($id) [expr {2 * $i}]]
set row [lindex $idrowranges($id) [expr {2 * $i + 1}]]
set ranges [rowranges $id]
set downarrow 1
if {[info exists commitrow($id)] && $commitrow($id) < $numcommits} {
set downarrow [expr {$i < [llength $ranges] / 2 - 1}]
} else {
set downarrow 1
}
set startrow [lindex $ranges [expr {2 * $i}]]
set row [lindex $ranges [expr {2 * $i + 1}]]
if {$startrow == $row} return
assigncolor $id
set coords {}
@ -1290,8 +1509,7 @@ proc drawlineseg {id i} {
}
}
if {[llength $coords] < 4} return
set last [expr {[llength $idrowranges($id)] / 2 - 1}]
if {$i < $last} {
if {$downarrow} {
# This line has an arrow at the lower end: check if the arrow is
# on a diagonal segment, and if so, work around the Tk 8.4
# refusal to draw arrows on diagonal lines.
@ -1311,7 +1529,7 @@ proc drawlineseg {id i} {
}
}
}
set arrow [expr {2 * ($i > 0) + ($i < $last)}]
set arrow [expr {2 * ($i > 0) + $downarrow}]
set arrow [lindex {none first last both} $arrow]
set t [$canv create line $coords -width [linewidth $id] \
-fill $colormap($id) -tags lines.$id -arrow $arrow]
@ -1320,7 +1538,7 @@ proc drawlineseg {id i} {
}
proc drawparentlinks {id row col olds} {
global rowidlist canv colormap idrowranges
global rowidlist canv colormap
set row2 [expr {$row + 1}]
set x [xc $row $col]
@ -1339,9 +1557,9 @@ proc drawparentlinks {id row col olds} {
if {$x2 > $rmx} {
set rmx $x2
}
if {[info exists idrowranges($p)] &&
$row2 == [lindex $idrowranges($p) 0] &&
$row2 < [lindex $idrowranges($p) 1]} {
set ranges [rowranges $p]
if {$ranges ne {} && $row2 == [lindex $ranges 0]
&& $row2 < [lindex $ranges 1]} {
# drawlineseg will do this one for us
continue
}
@ -1364,11 +1582,11 @@ proc drawparentlinks {id row col olds} {
proc drawlines {id} {
global colormap canv
global idrowranges idrangedrawn
global idrangedrawn
global childlist iddrawn commitrow rowidlist
$canv delete lines.$id
set nr [expr {[llength $idrowranges($id)] / 2}]
set nr [expr {[llength [rowranges $id]] / 2}]
for {set i 0} {$i < $nr} {incr i} {
if {[info exists idrangedrawn($id,$i)]} {
drawlineseg $id $i
@ -1431,14 +1649,13 @@ proc drawcmittext {id row col rmx} {
proc drawcmitrow {row} {
global displayorder rowidlist
global idrowranges idrangedrawn iddrawn
global idrangedrawn iddrawn
global commitinfo commitlisted parentlist numcommits
if {$row >= $numcommits} return
foreach id [lindex $rowidlist $row] {
if {![info exists idrowranges($id)]} continue
set i -1
foreach {s e} $idrowranges($id) {
foreach {s e} [rowranges $id] {
incr i
if {$row < $s} continue
if {$e eq {}} break
@ -1507,10 +1724,50 @@ proc clear_display {} {
catch {unset idrangedrawn}
}
proc findcrossings {id} {
global rowidlist parentlist numcommits rowoffsets displayorder
set cross {}
set ccross {}
foreach {s e} [rowranges $id] {
if {$e >= $numcommits} {
set e [expr {$numcommits - 1}]
if {$e < $s} continue
}
set x [lsearch -exact [lindex $rowidlist $e] $id]
if {$x < 0} {
puts "findcrossings: oops, no [shortids $id] in row $e"
continue
}
for {set row $e} {[incr row -1] >= $s} {} {
set olds [lindex $parentlist $row]
set kid [lindex $displayorder $row]
set kidx [lsearch -exact [lindex $rowidlist $row] $kid]
if {$kidx < 0} continue
set nextrow [lindex $rowidlist [expr {$row + 1}]]
foreach p $olds {
set px [lsearch -exact $nextrow $p]
if {$px < 0} continue
if {($kidx < $x && $x < $px) || ($px < $x && $x < $kidx)} {
if {[lsearch -exact $ccross $p] >= 0} continue
if {$x == $px + ($kidx < $px? -1: 1)} {
lappend ccross $p
} elseif {[lsearch -exact $cross $p] < 0} {
lappend cross $p
}
}
}
set inc [lindex $rowoffsets $row $x]
if {$inc eq {}} break
incr x $inc
}
}
return [concat $ccross {{}} $cross]
}
proc assigncolor {id} {
global colormap colors nextcolor
global commitrow parentlist children childlist
global cornercrossings crossings
if {[info exists colormap($id)]} return
set ncolors [llength $colors]
@ -1530,32 +1787,22 @@ proc assigncolor {id} {
}
}
set badcolors {}
if {[info exists cornercrossings($id)]} {
foreach x $cornercrossings($id) {
if {[info exists colormap($x)]
&& [lsearch -exact $badcolors $colormap($x)] < 0} {
lappend badcolors $colormap($x)
}
set origbad {}
foreach x [findcrossings $id] {
if {$x eq {}} {
# delimiter between corner crossings and other crossings
if {[llength $badcolors] >= $ncolors - 1} break
set origbad $badcolors
}
if {[llength $badcolors] >= $ncolors} {
set badcolors {}
if {[info exists colormap($x)]
&& [lsearch -exact $badcolors $colormap($x)] < 0} {
lappend badcolors $colormap($x)
}
}
if {[llength $badcolors] >= $ncolors} {
set badcolors $origbad
}
set origbad $badcolors
if {[llength $badcolors] < $ncolors - 1} {
if {[info exists crossings($id)]} {
foreach x $crossings($id) {
if {[info exists colormap($x)]
&& [lsearch -exact $badcolors $colormap($x)] < 0} {
lappend badcolors $colormap($x)
}
}
if {[llength $badcolors] >= $ncolors} {
set badcolors $origbad
}
}
set origbad $badcolors
}
if {[llength $badcolors] < $ncolors - 1} {
foreach child $kids {
if {[info exists colormap($child)]
@ -1659,55 +1906,6 @@ proc drawtags {id x xt y1} {
return $xt
}
proc checkcrossings {row endrow} {
global displayorder parentlist rowidlist
for {} {$row < $endrow} {incr row} {
set id [lindex $displayorder $row]
set i [lsearch -exact [lindex $rowidlist $row] $id]
if {$i < 0} continue
set idlist [lindex $rowidlist [expr {$row+1}]]
foreach p [lindex $parentlist $row] {
set j [lsearch -exact $idlist $p]
if {$j > 0} {
if {$j < $i - 1} {
notecrossings $row $p $j $i [expr {$j+1}]
} elseif {$j > $i + 1} {
notecrossings $row $p $i $j [expr {$j-1}]
}
}
}
}
}
proc notecrossings {row id lo hi corner} {
global rowidlist crossings cornercrossings
for {set i $lo} {[incr i] < $hi} {} {
set p [lindex [lindex $rowidlist $row] $i]
if {$p == {}} continue
if {$i == $corner} {
if {![info exists cornercrossings($id)]
|| [lsearch -exact $cornercrossings($id) $p] < 0} {
lappend cornercrossings($id) $p
}
if {![info exists cornercrossings($p)]
|| [lsearch -exact $cornercrossings($p) $id] < 0} {
lappend cornercrossings($p) $id
}
} else {
if {![info exists crossings($id)]
|| [lsearch -exact $crossings($id) $p] < 0} {
lappend crossings($id) $p
}
if {![info exists crossings($p)]
|| [lsearch -exact $crossings($p) $id] < 0} {
lappend crossings($p) $id
}
}
}
}
proc xcoord {i level ln} {
global canvx0 xspc1 xspc2
@ -1763,7 +1961,7 @@ proc drawrest {} {
showstuff $commitidx
set drawmsecs [expr {[clock clicks -milliseconds] - $startmsecs}]
puts "overall $drawmsecs ms for $numcommits commits"
#puts "overall $drawmsecs ms for $numcommits commits"
}
proc findmatches {f} {
@ -2433,9 +2631,10 @@ proc selnextline {dir} {
}
proc unselectline {} {
global selectedline
global selectedline currentid
catch {unset selectedline}
catch {unset currentid}
allcanvs delete secsel
}
@ -2948,12 +3147,13 @@ proc linehover {} {
}
proc clickisonarrow {id y} {
global lthickness idrowranges
global lthickness
set ranges [rowranges $id]
set thresh [expr {2 * $lthickness + 6}]
set n [expr {[llength $idrowranges($id)] - 1}]
set n [expr {[llength $ranges] - 1}]
for {set i 1} {$i < $n} {incr i} {
set row [lindex $idrowranges($id) $i]
set row [lindex $ranges $i]
if {abs([yc $row] - $y) < $thresh} {
return $i
}
@ -2962,11 +3162,11 @@ proc clickisonarrow {id y} {
}
proc arrowjump {id n y} {
global idrowranges canv
global canv
# 1 <-> 2, 3 <-> 4, etc...
set n [expr {(($n - 1) ^ 1) + 1}]
set row [lindex $idrowranges($id) $n]
set row [lindex [rowranges $id] $n]
set yt [yc $row]
set ymax [lindex [$canv cget -scrollregion] 3]
if {$ymax eq {} || $ymax <= 0} return
@ -3819,10 +4019,26 @@ set historyindex 0
set optim_delay 16
set nextviewnum 1
set curview 0
set viewfiles(0) {}
set stopped 0
set stuffsaved 0
set patchnum 0
setcoords
makewindow $revtreeargs
readrefs
getcommits $revtreeargs
parse_args $revtreeargs
set args $parsed_args
if {$cmdline_files ne {}} {
# create a view for the files/dirs specified on the command line
set curview 1
set nextviewnum 2
set viewname(1) "Command line"
set viewfiles(1) $cmdline_files
.bar.view add command -label $viewname(1) -command {showview 1}
.bar.view entryconf 2 -state normal
set args [concat $args "--" $cmdline_files]
}
getcommits $args