lib/blame.tcl

   1 # git-gui blame viewer
   2 # Copyright (C) 2006, 2007 Shawn Pearce
   3
   4 class blame {
   5
   6 image create photo ::blame::img_back_arrow -data {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}
   7
   8 field commit    ; # input commit to blame
   9 field path      ; # input filename to view in $commit
  10 field history {}; # viewer history: {commit path}
  11
  12 field w          ; # top window in this viewer
  13 field w_back     ; # our back button
  14 field w_path     ; # label showing the current file path
  15 field w_line     ; # text column: all line numbers
  16 field w_cgrp     ; # text column: abbreviated commit SHA-1s
  17 field w_file     ; # text column: actual file data
  18 field w_cmit     ; # pane showing commit message
  19 field status     ; # text variable bound to status bar
  20 field old_height ; # last known height of $w.file_pane
  21
  22 field current_fd       {} ; # background process running
  23 field highlight_line   -1 ; # current line selected
  24 field highlight_commit {} ; # sha1 of commit selected
  25
  26 field total_lines       0  ; # total length of file
  27 field blame_lines       0  ; # number of lines computed
  28 field commit_count      0  ; # number of commits in $commit_list
  29 field commit_list      {}  ; # list of commit sha1 in receipt order
  30 field order                ; # array commit -> receipt order
  31 field header               ; # array commit,key -> header field
  32 field line_commit          ; # array line -> sha1 commit
  33 field line_file            ; # array line -> file name
  34
  35 field r_commit      ; # commit currently being parsed
  36 field r_orig_line   ; # original line number
  37 field r_final_line  ; # final line number
  38 field r_line_count  ; # lines in this region
  39
  40 field tooltip_wm     {} ; # Current tooltip toplevel, if open
  41 field tooltip_timer  {} ; # Current timer event for our tooltip
  42 field tooltip_commit {} ; # Commit in tooltip
  43 field tooltip_text   {} ; # Text in current tooltip
  44
  45 variable active_color #98e1a0
  46 variable group_colors {
  47         #cbcbcb
  48         #e1e1e1
  49 }
  50
  51 constructor new {i_commit i_path} {
  52         variable active_color
  53         global cursor_ptr
  54
  55         set commit $i_commit
  56         set path   $i_path
  57
  58         make_toplevel top w
  59         wm title $top "[appname] ([reponame]): File Viewer"
  60
  61         frame $w.header -background orange
  62         label $w.header.commit_l \
  63                 -text {Commit:} \
  64                 -background orange \
  65                 -anchor w \
  66                 -justify left
  67         set w_back $w.header.commit_b
  68         label $w_back \
  69                 -image ::blame::img_back_arrow \
  70                 -borderwidth 0 \
  71                 -relief flat \
  72                 -state disabled \
  73                 -background orange \
  74                 -activebackground orange
  75         bind $w_back <Button-1> "
  76                 if {\[$w_back cget -state\] eq {normal}} {
  77                         [cb _history_menu]
  78                 }
  79                 "
  80         label $w.header.commit \
  81                 -textvariable @commit \
  82                 -background orange \
  83                 -anchor w \
  84                 -justify left
  85         label $w.header.path_l \
  86                 -text {File:} \
  87                 -background orange \
  88                 -anchor w \
  89                 -justify left
  90         set w_path $w.header.path
  91         label $w_path \
  92                 -background orange \
  93                 -anchor w \
  94                 -justify left
  95         pack $w.header.commit_l -side left
  96         pack $w_back -side left
  97         pack $w.header.commit -side left
  98         pack $w_path -fill x -side right
  99         pack $w.header.path_l -side right
 100
 101         panedwindow $w.file_pane -orient vertical
 102         frame $w.file_pane.out
 103         frame $w.file_pane.cm
 104         $w.file_pane add $w.file_pane.out \
 105                 -sticky nsew \
 106                 -minsize 100 \
 107                 -height 100 \
 108                 -width 100
 109         $w.file_pane add $w.file_pane.cm \
 110                 -sticky nsew \
 111                 -minsize 25 \
 112                 -height 25 \
 113                 -width 100
 114
 115         set w_line $w.file_pane.out.linenumber_t
 116         text $w_line \
 117                 -background white -borderwidth 0 \
 118                 -state disabled \
 119                 -wrap none \
 120                 -height 40 \
 121                 -width 5 \
 122                 -font font_diff
 123         $w_line tag conf linenumber -justify right
 124
 125         set w_cgrp $w.file_pane.out.commit_t
 126         text $w_cgrp \
 127                 -background white -borderwidth 0 \
 128                 -state disabled \
 129                 -wrap none \
 130                 -height 40 \
 131                 -width 4 \
 132                 -font font_diff
 133         $w_cgrp tag conf curr_commit
 134         $w_cgrp tag conf prior_commit \
 135                 -foreground blue \
 136                 -underline 1
 137         $w_cgrp tag bind prior_commit \
 138                 <Button-1> \
 139                 "[cb _load_commit @%x,%y];break"
 140
 141         set w_file $w.file_pane.out.file_t
 142         text $w_file \
 143                 -background white -borderwidth 0 \
 144                 -state disabled \
 145                 -wrap none \
 146                 -height 40 \
 147                 -width 80 \
 148                 -xscrollcommand [list $w.file_pane.out.sbx set] \
 149                 -font font_diff
 150
 151         scrollbar $w.file_pane.out.sbx \
 152                 -orient h \
 153                 -command [list $w_file xview]
 154         scrollbar $w.file_pane.out.sby \
 155                 -orient v \
 156                 -command [list scrollbar2many [list \
 157                 $w_line \
 158                 $w_cgrp \
 159                 $w_file \
 160                 ] yview]
 161         grid \
 162                 $w_cgrp \
 163                 $w_line \
 164                 $w_file \
 165                 $w.file_pane.out.sby \
 166                 -sticky nsew
 167         grid conf $w.file_pane.out.sbx -column 2 -sticky we
 168         grid columnconfigure $w.file_pane.out 2 -weight 1
 169         grid rowconfigure $w.file_pane.out 0 -weight 1
 170
 171         set w_cmit $w.file_pane.cm.t
 172         text $w_cmit \
 173                 -background white -borderwidth 0 \
 174                 -state disabled \
 175                 -wrap none \
 176                 -height 10 \
 177                 -width 80 \
 178                 -xscrollcommand [list $w.file_pane.cm.sbx set] \
 179                 -yscrollcommand [list $w.file_pane.cm.sby set] \
 180                 -font font_diff
 181         $w_cmit tag conf header_key \
 182                 -tabs {3c} \
 183                 -background $active_color \
 184                 -font font_uibold
 185         $w_cmit tag conf header_val \
 186                 -background $active_color \
 187                 -font font_ui
 188         $w_cmit tag raise sel
 189         scrollbar $w.file_pane.cm.sbx \
 190                 -orient h \
 191                 -command [list $w_cmit xview]
 192         scrollbar $w.file_pane.cm.sby \
 193                 -orient v \
 194                 -command [list $w_cmit yview]
 195         pack $w.file_pane.cm.sby -side right -fill y
 196         pack $w.file_pane.cm.sbx -side bottom -fill x
 197         pack $w_cmit -expand 1 -fill both
 198
 199         frame $w.status \
 200                 -borderwidth 1 \
 201                 -relief sunken
 202         label $w.status.l \
 203                 -textvariable @status \
 204                 -anchor w \
 205                 -justify left
 206         pack $w.status.l -side left
 207
 208         menu $w.ctxm -tearoff 0
 209         $w.ctxm add command \
 210                 -label "Copy Commit" \
 211                 -command [cb _copycommit]
 212
 213         foreach i [list \
 214                 $w_cgrp \
 215                 $w_line \
 216                 $w_file] {
 217                 $i conf -cursor $cursor_ptr
 218                 $i conf -yscrollcommand \
 219                         [list many2scrollbar [list \
 220                         $w_cgrp \
 221                         $w_line \
 222                         $w_file \
 223                         ] yview $w.file_pane.out.sby]
 224                 bind $i <Button-1> "
 225                         [cb _hide_tooltip]
 226                         [cb _click $i @%x,%y]
 227                         focus $i
 228                 "
 229                 bind $i <Any-Motion>  [cb _show_tooltip $i @%x,%y]
 230                 bind $i <Any-Enter>   [cb _hide_tooltip]
 231                 bind $i <Any-Leave>   [cb _hide_tooltip]
 232                 bind_button3 $i "
 233                         [cb _hide_tooltip]
 234                         set cursorX %x
 235                         set cursorY %y
 236                         set cursorW %W
 237                         tk_popup $w.ctxm %X %Y
 238                 "
 239         }
 240
 241         foreach i [list \
 242                 $w_cgrp \
 243                 $w_line \
 244                 $w_file \
 245                 $w_cmit] {
 246                 bind $i <Key-Up>        {catch {%W yview scroll -1 units};break}
 247                 bind $i <Key-Down>      {catch {%W yview scroll  1 units};break}
 248                 bind $i <Key-Left>      {catch {%W xview scroll -1 units};break}
 249                 bind $i <Key-Right>     {catch {%W xview scroll  1 units};break}
 250                 bind $i <Key-k>         {catch {%W yview scroll -1 units};break}
 251                 bind $i <Key-j>         {catch {%W yview scroll  1 units};break}
 252                 bind $i <Key-h>         {catch {%W xview scroll -1 units};break}
 253                 bind $i <Key-l>         {catch {%W xview scroll  1 units};break}
 254                 bind $i <Control-Key-b> {catch {%W yview scroll -1 pages};break}
 255                 bind $i <Control-Key-f> {catch {%W yview scroll  1 pages};break}
 256         }
 257
 258         bind $w_cmit <Button-1> [list focus $w_cmit]
 259         bind $top <Visibility> [list focus $top]
 260         bind $w_file <Destroy> [list delete_this $this]
 261
 262         grid configure $w.header -sticky ew
 263         grid configure $w.file_pane -sticky nsew
 264         grid configure $w.status -sticky ew
 265         grid columnconfigure $top 0 -weight 1
 266         grid rowconfigure $top 0 -weight 0
 267         grid rowconfigure $top 1 -weight 1
 268         grid rowconfigure $top 2 -weight 0
 269
 270         set req_w [winfo reqwidth  $top]
 271         set req_h [winfo reqheight $top]
 272         if {$req_w < 600} {set req_w 600}
 273         if {$req_h < 400} {set req_h 400}
 274         set g "${req_w}x${req_h}"
 275         wm geometry $top $g
 276         update
 277
 278         set old_height [winfo height $w.file_pane]
 279         $w.file_pane sash place 0 \
 280                 [lindex [$w.file_pane sash coord 0] 0] \
 281                 [expr {int($old_height * 0.70)}]
 282         bind $w.file_pane <Configure> \
 283         "if {{$w.file_pane} eq {%W}} {[cb _resize %h]}"
 284
 285         _load $this
 286 }
 287
 288 method _load {} {
 289         _hide_tooltip $this
 290
 291         if {$total_lines != 0 || $current_fd ne {}} {
 292                 if {$current_fd ne {}} {
 293                         catch {close $current_fd}
 294                         set current_fd {}
 295                 }
 296
 297                 set highlight_line -1
 298                 set highlight_commit {}
 299                 set total_lines 0
 300                 set blame_lines 0
 301                 set commit_count 0
 302                 set commit_list {}
 303                 array unset order
 304                 array unset line_commit
 305                 array unset line_file
 306
 307                 $w_cgrp conf -state normal
 308                 $w_line conf -state normal
 309                 $w_file conf -state normal
 310
 311                 $w_cgrp delete 0.0 end
 312                 $w_line delete 0.0 end
 313                 $w_file delete 0.0 end
 314
 315                 $w_cgrp conf -state disabled
 316                 $w_line conf -state disabled
 317                 $w_file conf -state disabled
 318         }
 319
 320         if {[winfo exists $w.status.c]} {
 321                 $w.status.c coords bar 0 0 0 20
 322         } else {
 323                 canvas $w.status.c \
 324                         -width 100 \
 325                         -height [expr {int([winfo reqheight $w.status.l] * 0.6)}] \
 326                         -borderwidth 1 \
 327                         -relief groove \
 328                         -highlightt 0
 329                 $w.status.c create rectangle 0 0 0 20 -tags bar -fill navy
 330                 pack $w.status.c -side right
 331         }
 332
 333         if {$history eq {}} {
 334                 $w_back conf -state disabled
 335         } else {
 336                 $w_back conf -state normal
 337         }
 338         lappend history [list $commit $path]
 339
 340         set status "Loading $commit:[escape_path $path]..."
 341         $w_path conf -text [escape_path $path]
 342         if {$commit eq {}} {
 343                 set fd [open $path r]
 344         } else {
 345                 set cmd [list git cat-file blob "$commit:$path"]
 346                 set fd [open "| $cmd" r]
 347         }
 348         fconfigure $fd -blocking 0 -translation lf -encoding binary
 349         fileevent $fd readable [cb _read_file $fd]
 350         set current_fd $fd
 351 }
 352
 353 method _history_menu {} {
 354         set m $w.backmenu
 355         if {[winfo exists $m]} {
 356                 $m delete 0 end
 357         } else {
 358                 menu $m -tearoff 0
 359         }
 360
 361         for {set i [expr {[llength $history] - 2}]
 362                 } {$i >= 0} {incr i -1} {
 363                 set e [lindex $history $i]
 364                 set c [lindex $e 0]
 365                 set f [lindex $e 1]
 366
 367                 if {[regexp {^[0-9a-f]{40}$} $c]} {
 368                         set t [string range $c 0 8]...
 369                 } else {
 370                         set t $c
 371                 }
 372                 if {![catch {set summary $header($c,summary)}]} {
 373                         append t " $summary"
 374                         if {[string length $t] > 70} {
 375                                 set t [string range $t 0 66]...
 376                         }
 377                 }
 378
 379                 $m add command -label $t -command [cb _goback $i $c $f]
 380         }
 381         set X [winfo rootx $w_back]
 382         set Y [expr {[winfo rooty $w_back] + [winfo height $w_back]}]
 383         tk_popup $m $X $Y
 384 }
 385
 386 method _goback {i c f} {
 387         set history [lrange $history 0 [expr {$i - 1}]]
 388         set commit $c
 389         set path $f
 390         _load $this
 391 }
 392
 393 method _read_file {fd} {
 394         if {$fd ne $current_fd} {
 395                 catch {close $fd}
 396                 return
 397         }
 398
 399         $w_cgrp conf -state normal
 400         $w_line conf -state normal
 401         $w_file conf -state normal
 402         while {[gets $fd line] >= 0} {
 403                 regsub "\r\$" $line {} line
 404                 incr total_lines
 405
 406                 if {$total_lines > 1} {
 407                         $w_cgrp insert end "\n"
 408                         $w_line insert end "\n"
 409                         $w_file insert end "\n"
 410                 }
 411
 412                 $w_line insert end "$total_lines" linenumber
 413                 $w_file insert end "$line"
 414         }
 415         $w_cgrp conf -state disabled
 416         $w_line conf -state disabled
 417         $w_file conf -state disabled
 418
 419         if {[eof $fd]} {
 420                 close $fd
 421                 _status $this
 422                 set cmd {nice git blame -M -C --incremental}
 423                 if {$commit eq {}} {
 424                         lappend cmd --contents $path
 425                 } else {
 426                         lappend cmd $commit
 427                 }
 428                 lappend cmd -- $path
 429                 set fd [open "| $cmd" r]
 430                 fconfigure $fd -blocking 0 -translation lf -encoding binary
 431                 fileevent $fd readable [cb _read_blame $fd]
 432                 set current_fd $fd
 433         }
 434 } ifdeleted { catch {close $fd} }
 435
 436 method _read_blame {fd} {
 437         variable group_colors
 438
 439         if {$fd ne $current_fd} {
 440                 catch {close $fd}
 441                 return
 442         }
 443
 444         $w_cgrp conf -state normal
 445         while {[gets $fd line] >= 0} {
 446                 if {[regexp {^([a-z0-9]{40}) (\d+) (\d+) (\d+)$} $line line \
 447                         cmit original_line final_line line_count]} {
 448                         set r_commit     $cmit
 449                         set r_orig_line  $original_line
 450                         set r_final_line $final_line
 451                         set r_line_count $line_count
 452
 453                         if {[catch {set g $order($cmit)}]} {
 454                                 set bg [lindex $group_colors 0]
 455                                 set group_colors [lrange $group_colors 1 end]
 456                                 lappend group_colors $bg
 457
 458                                 $w_cgrp tag conf g$cmit -background $bg
 459                                 $w_line tag conf g$cmit -background $bg
 460                                 $w_file tag conf g$cmit -background $bg
 461
 462                                 set order($cmit) $commit_count
 463                                 incr commit_count
 464                                 lappend commit_list $cmit
 465                         }
 466                 } elseif {[string match {filename *} $line]} {
 467                         set file [string range $line 9 end]
 468                         set n    $r_line_count
 469                         set lno  $r_final_line
 470                         set cmit $r_commit
 471
 472                         if {[regexp {^0{40}$} $cmit]} {
 473                                 set commit_abbr work
 474                                 set commit_type curr_commit
 475                         } elseif {$cmit eq $commit} {
 476                                 set commit_abbr this
 477                                 set commit_type curr_commit
 478                         } else {
 479                                 set commit_type prior_commit
 480                                 set commit_abbr [string range $cmit 0 4]
 481                         }
 482
 483                         set author_abbr {}
 484                         set a_name {}
 485                         catch {set a_name $header($cmit,author)}
 486                         while {$a_name ne {}} {
 487                                 if {![regexp {^([[:upper:]])} $a_name _a]} break
 488                                 append author_abbr $_a
 489                                 unset _a
 490                                 if {![regsub \
 491                                         {^[[:upper:]][^\s]*\s+} \
 492                                         $a_name {} a_name ]} break
 493                         }
 494                         if {$author_abbr eq {}} {
 495                                 set author_abbr { |}
 496                         } else {
 497                                 set author_abbr [string range $author_abbr 0 3]
 498                                 while {[string length $author_abbr] < 4} {
 499                                         set author_abbr " $author_abbr"
 500                                 }
 501                         }
 502                         unset a_name
 503
 504                         set first_lno $lno
 505                         while {
 506                            ![catch {set ncmit $line_commit([expr {$first_lno - 1}])}]
 507                         && ![catch {set nfile $line_file([expr {$first_lno - 1}])}]
 508                         && $ncmit eq $cmit
 509                         && $nfile eq $file
 510                         } {
 511                                 incr first_lno -1
 512                         }
 513
 514                         while {$n > 0} {
 515                                 set lno_e "$lno.0 lineend + 1c"
 516                                 if {![catch {set g g$line_commit($lno)}]} {
 517                                         $w_cgrp tag remove g$g $lno.0 $lno_e
 518                                         $w_line tag remove g$g $lno.0 $lno_e
 519                                         $w_file tag remove g$g $lno.0 $lno_e
 520
 521                                         $w_cgrp tag remove a$g $lno.0 $lno_e
 522                                         $w_line tag remove a$g $lno.0 $lno_e
 523                                         $w_file tag remove a$g $lno.0 $lno_e
 524                                 }
 525
 526                                 set line_commit($lno) $cmit
 527                                 set line_file($lno)   $file
 528
 529                                 $w_cgrp delete $lno.0 "$lno.0 lineend"
 530                                 if {$lno == $first_lno} {
 531                                         $w_cgrp insert $lno.0 $commit_abbr $commit_type
 532                                 } elseif {$lno == [expr {$first_lno + 1}]} {
 533                                         $w_cgrp insert $lno.0 $author_abbr
 534                                 } else {
 535                                         $w_cgrp insert $lno.0 { |}
 536                                 }
 537
 538                                 $w_cgrp tag add g$cmit $lno.0 $lno_e
 539                                 $w_line tag add g$cmit $lno.0 $lno_e
 540                                 $w_file tag add g$cmit $lno.0 $lno_e
 541
 542                                 $w_cgrp tag add a$cmit $lno.0 $lno_e
 543                                 $w_line tag add a$cmit $lno.0 $lno_e
 544                                 $w_file tag add a$cmit $lno.0 $lno_e
 545
 546                                 if {$highlight_line == -1} {
 547                                         if {[lindex [$w_file yview] 0] == 0} {
 548                                                 $w_file see $lno.0
 549                                                 _showcommit $this $lno
 550                                         }
 551                                 } elseif {$highlight_line == $lno} {
 552                                         _showcommit $this $lno
 553                                 }
 554
 555                                 incr n -1
 556                                 incr lno
 557                                 incr blame_lines
 558                         }
 559
 560                         while {
 561                            ![catch {set ncmit $line_commit($lno)}]
 562                         && ![catch {set nfile $line_file($lno)}]
 563                         && $ncmit eq $cmit
 564                         && $nfile eq $file
 565                         } {
 566                                 $w_cgrp delete $lno.0 "$lno.0 lineend"
 567
 568                                 if {$lno == $first_lno} {
 569                                         $w_cgrp insert $lno.0 $commit_abbr $commit_type
 570                                 } elseif {$lno == [expr {$first_lno + 1}]} {
 571                                         $w_cgrp insert $lno.0 $author_abbr
 572                                 } else {
 573                                         $w_cgrp insert $lno.0 { |}
 574                                 }
 575                                 incr lno
 576                         }
 577
 578                 } elseif {[regexp {^([a-z-]+) (.*)$} $line line key data]} {
 579                         set header($r_commit,$key) $data
 580                 }
 581         }
 582         $w_cgrp conf -state disabled
 583
 584         if {[eof $fd]} {
 585                 close $fd
 586                 set current_fd {}
 587                 set status {Annotation complete.}
 588                 destroy $w.status.c
 589         } else {
 590                 _status $this
 591         }
 592 } ifdeleted { catch {close $fd} }
 593
 594 method _status {} {
 595         set have  $blame_lines
 596         set total $total_lines
 597         set pdone 0
 598         if {$total} {set pdone [expr {100 * $have / $total}]}
 599
 600         set status [format \
 601                 "Loading annotations... %i of %i lines annotated (%2i%%)" \
 602                 $have $total $pdone]
 603         $w.status.c coords bar 0 0 $pdone 20
 604 }
 605
 606 method _click {cur_w pos} {
 607         set lno [lindex [split [$cur_w index $pos] .] 0]
 608         if {$lno eq {}} return
 609         _showcommit $this $lno
 610 }
 611
 612 method _load_commit {pos} {
 613         set lno [lindex [split [$w_cgrp index $pos] .] 0]
 614         if {[catch {set cmit $line_commit($lno)}]} return
 615         if {[catch {set file $line_file($lno)  }]} return
 616
 617         set commit $cmit
 618         set path $file
 619         _load $this
 620 }
 621
 622 method _showcommit {lno} {
 623         global repo_config
 624         variable active_color
 625
 626         if {$highlight_commit ne {}} {
 627                 set cmit $highlight_commit
 628                 $w_cgrp tag conf a$cmit -background {}
 629                 $w_line tag conf a$cmit -background {}
 630                 $w_file tag conf a$cmit -background {}
 631         }
 632
 633         $w_cmit conf -state normal
 634         $w_cmit delete 0.0 end
 635         if {[catch {set cmit $line_commit($lno)}]} {
 636                 set cmit {}
 637                 $w_cmit insert end "Loading annotation..."
 638         } else {
 639                 $w_cgrp tag conf a$cmit -background $active_color
 640                 $w_line tag conf a$cmit -background $active_color
 641                 $w_file tag conf a$cmit -background $active_color
 642
 643                 set author_name {}
 644                 set author_email {}
 645                 set author_time {}
 646                 catch {set author_name $header($cmit,author)}
 647                 catch {set author_email $header($cmit,author-mail)}
 648                 catch {set author_time [clock format \
 649                         $header($cmit,author-time) \
 650                         -format {%Y-%m-%d %H:%M:%S}
 651                 ]}
 652
 653                 set committer_name {}
 654                 set committer_email {}
 655                 set committer_time {}
 656                 catch {set committer_name $header($cmit,committer)}
 657                 catch {set committer_email $header($cmit,committer-mail)}
 658                 catch {set committer_time [clock format \
 659                         $header($cmit,committer-time) \
 660                         -format {%Y-%m-%d %H:%M:%S}
 661                 ]}
 662
 663                 if {[catch {set msg $header($cmit,message)}]} {
 664                         set msg {}
 665                         catch {
 666                                 set fd [open "| git cat-file commit $cmit" r]
 667                                 fconfigure $fd -encoding binary -translation lf
 668                                 if {[catch {set enc $repo_config(i18n.commitencoding)}]} {
 669                                         set enc utf-8
 670                                 }
 671                                 while {[gets $fd line] > 0} {
 672                                         if {[string match {encoding *} $line]} {
 673                                                 set enc [string tolower [string range $line 9 end]]
 674                                         }
 675                                 }
 676                                 set msg [encoding convertfrom $enc [read $fd]]
 677                                 set msg [string trim $msg]
 678                                 close $fd
 679
 680                                 set author_name [encoding convertfrom $enc $author_name]
 681                                 set committer_name [encoding convertfrom $enc $committer_name]
 682
 683                                 set header($cmit,author) $author_name
 684                                 set header($cmit,committer) $committer_name
 685                         }
 686                         set header($cmit,message) $msg
 687                 }
 688
 689                 $w_cmit insert end "commit $cmit\n" header_key
 690                 $w_cmit insert end "Author:\t" header_key
 691                 $w_cmit insert end "$author_name $author_email" header_val
 692                 $w_cmit insert end "$author_time\n" header_val
 693
 694                 $w_cmit insert end "Committer:\t" header_key
 695                 $w_cmit insert end "$committer_name $committer_email" header_val
 696                 $w_cmit insert end "$committer_time\n" header_val
 697
 698                 if {$line_file($lno) ne $path} {
 699                         $w_cmit insert end "Original File:\t" header_key
 700                         $w_cmit insert end "[escape_path $line_file($lno)]\n" header_val
 701                 }
 702
 703                 $w_cmit insert end "\n$msg"
 704         }
 705         $w_cmit conf -state disabled
 706
 707         set highlight_line $lno
 708         set highlight_commit $cmit
 709
 710         if {$highlight_commit eq $tooltip_commit} {
 711                 _hide_tooltip $this
 712         }
 713 }
 714
 715 method _copycommit {} {
 716         set pos @$::cursorX,$::cursorY
 717         set lno [lindex [split [$::cursorW index $pos] .] 0]
 718         if {![catch {set commit $line_commit($lno)}]} {
 719                 clipboard clear
 720                 clipboard append \
 721                         -format STRING \
 722                         -type STRING \
 723                         -- $commit
 724         }
 725 }
 726
 727 method _show_tooltip {cur_w pos} {
 728         set lno [lindex [split [$cur_w index $pos] .] 0]
 729         if {[catch {set cmit $line_commit($lno)}]} {
 730                 _hide_tooltip $this
 731                 return
 732         }
 733
 734         if {$cmit eq $highlight_commit} {
 735                 _hide_tooltip $this
 736                 return
 737         }
 738
 739         if {$cmit eq $tooltip_commit} {
 740                 _position_tooltip $this
 741         } elseif {$tooltip_wm ne {}} {
 742                 _open_tooltip $this $cur_w
 743         } elseif {$tooltip_timer eq {}} {
 744                 set tooltip_timer [after 1000 [cb _open_tooltip $cur_w]]
 745         }
 746 }
 747
 748 method _open_tooltip {cur_w} {
 749         set tooltip_timer {}
 750         set pos_x [winfo pointerx $cur_w]
 751         set pos_y [winfo pointery $cur_w]
 752         if {[winfo containing $pos_x $pos_y] ne $cur_w} {
 753                 _hide_tooltip $this
 754                 return
 755         }
 756
 757         set pos @[join [list \
 758                 [expr {$pos_x - [winfo rootx $cur_w]}] \
 759                 [expr {$pos_y - [winfo rooty $cur_w]}]] ,]
 760         set lno [lindex [split [$cur_w index $pos] .] 0]
 761         set cmit $line_commit($lno)
 762
 763         set author_name {}
 764         set author_email {}
 765         set author_time {}
 766         catch {set author_name $header($cmit,author)}
 767         catch {set author_email $header($cmit,author-mail)}
 768         catch {set author_time [clock format \
 769                 $header($cmit,author-time) \
 770                 -format {%Y-%m-%d %H:%M:%S}
 771         ]}
 772
 773         set committer_name {}
 774         set committer_email {}
 775         set committer_time {}
 776         catch {set committer_name $header($cmit,committer)}
 777         catch {set committer_email $header($cmit,committer-mail)}
 778         catch {set committer_time [clock format \
 779                 $header($cmit,committer-time) \
 780                 -format {%Y-%m-%d %H:%M:%S}
 781         ]}
 782
 783         set summary {}
 784         catch {set summary $header($cmit,summary)}
 785
 786         set tooltip_commit $cmit
 787         set tooltip_text "commit $cmit
 788 $author_name $author_email  $author_time
 789 $summary"
 790
 791         set file $line_file($lno)
 792         if {$file ne $path} {
 793                 append tooltip_text "
 794
 795 Original File: $file"
 796         }
 797
 798         if {$tooltip_wm ne "$cur_w.tooltip"} {
 799                 _hide_tooltip $this
 800
 801                 set tooltip_wm [toplevel $cur_w.tooltip -borderwidth 1]
 802                 wm overrideredirect $tooltip_wm 1
 803                 wm transient $tooltip_wm [winfo toplevel $cur_w]
 804                 pack [label $tooltip_wm.label \
 805                         -background lightyellow \
 806                         -foreground black \
 807                         -textvariable @tooltip_text \
 808                         -justify left]
 809         }
 810         _position_tooltip $this
 811 }
 812
 813 method _position_tooltip {} {
 814         set req_w [winfo reqwidth  $tooltip_wm.label]
 815         set req_h [winfo reqheight $tooltip_wm.label]
 816         set pos_x [expr {[winfo pointerx .] +  5}]
 817         set pos_y [expr {[winfo pointery .] + 10}]
 818
 819         set g "${req_w}x${req_h}"
 820         if {$pos_x >= 0} {append g +}
 821         append g $pos_x
 822         if {$pos_y >= 0} {append g +}
 823         append g $pos_y
 824
 825         wm geometry $tooltip_wm $g
 826         raise $tooltip_wm
 827 }
 828
 829 method _hide_tooltip {} {
 830         if {$tooltip_wm ne {}} {
 831                 destroy $tooltip_wm
 832                 set tooltip_wm {}
 833                 set tooltip_commit {}
 834         }
 835         if {$tooltip_timer ne {}} {
 836                 after cancel $tooltip_timer
 837                 set tooltip_timer {}
 838         }
 839 }
 840
 841 method _resize {new_height} {
 842         set diff [expr {$new_height - $old_height}]
 843         if {$diff == 0} return
 844
 845         set my [expr {[winfo height $w.file_pane] - 25}]
 846         set o [$w.file_pane sash coord 0]
 847         set ox [lindex $o 0]
 848         set oy [expr {[lindex $o 1] + $diff}]
 849         if {$oy < 0}   {set oy 0}
 850         if {$oy > $my} {set oy $my}
 851         $w.file_pane sash place 0 $ox $oy
 852
 853         set old_height $new_height
 854 }
 855
 856 }