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 #c0edc5
  46 variable group_colors {
  47         #d6d6d6
  48         #e1e1e1
  49         #ececec
  50 }
  51
  52 constructor new {i_commit i_path} {
  53         variable active_color
  54         global cursor_ptr
  55
  56         set commit $i_commit
  57         set path   $i_path
  58
  59         make_toplevel top w
  60         wm title $top "[appname] ([reponame]): File Viewer"
  61
  62         frame $w.header -background orange
  63         label $w.header.commit_l \
  64                 -text {Commit:} \
  65                 -background orange \
  66                 -anchor w \
  67                 -justify left
  68         set w_back $w.header.commit_b
  69         label $w_back \
  70                 -image ::blame::img_back_arrow \
  71                 -borderwidth 0 \
  72                 -relief flat \
  73                 -state disabled \
  74                 -background orange \
  75                 -activebackground orange
  76         bind $w_back <Button-1> "
  77                 if {\[$w_back cget -state\] eq {normal}} {
  78                         [cb _history_menu]
  79                 }
  80                 "
  81         label $w.header.commit \
  82                 -textvariable @commit \
  83                 -background orange \
  84                 -anchor w \
  85                 -justify left
  86         label $w.header.path_l \
  87                 -text {File:} \
  88                 -background orange \
  89                 -anchor w \
  90                 -justify left
  91         set w_path $w.header.path
  92         label $w_path \
  93                 -background orange \
  94                 -anchor w \
  95                 -justify left
  96         pack $w.header.commit_l -side left
  97         pack $w_back -side left
  98         pack $w.header.commit -side left
  99         pack $w_path -fill x -side right
 100         pack $w.header.path_l -side right
 101
 102         panedwindow $w.file_pane -orient vertical
 103         frame $w.file_pane.out
 104         frame $w.file_pane.cm
 105         $w.file_pane add $w.file_pane.out \
 106                 -sticky nsew \
 107                 -minsize 100 \
 108                 -height 100 \
 109                 -width 100
 110         $w.file_pane add $w.file_pane.cm \
 111                 -sticky nsew \
 112                 -minsize 25 \
 113                 -height 25 \
 114                 -width 100
 115
 116         set w_line $w.file_pane.out.linenumber_t
 117         text $w_line \
 118                 -takefocus 0 \
 119                 -highlightthickness 0 \
 120                 -padx 0 -pady 0 \
 121                 -background white -borderwidth 0 \
 122                 -state disabled \
 123                 -wrap none \
 124                 -height 40 \
 125                 -width 6 \
 126                 -font font_diff
 127         $w_line tag conf linenumber -justify right -rmargin 5
 128
 129         set w_cgrp $w.file_pane.out.commit_t
 130         text $w_cgrp \
 131                 -takefocus 0 \
 132                 -highlightthickness 0 \
 133                 -padx 0 -pady 0 \
 134                 -background white -borderwidth 0 \
 135                 -state disabled \
 136                 -wrap none \
 137                 -height 40 \
 138                 -width 4 \
 139                 -font font_diff
 140         $w_cgrp tag conf curr_commit
 141         $w_cgrp tag conf prior_commit \
 142                 -foreground blue \
 143                 -underline 1
 144         $w_cgrp tag bind prior_commit \
 145                 <Button-1> \
 146                 "[cb _load_commit @%x,%y];break"
 147
 148         set w_file $w.file_pane.out.file_t
 149         text $w_file \
 150                 -takefocus 0 \
 151                 -highlightthickness 0 \
 152                 -padx 0 -pady 0 \
 153                 -background white -borderwidth 0 \
 154                 -state disabled \
 155                 -wrap none \
 156                 -height 40 \
 157                 -width 80 \
 158                 -xscrollcommand [list $w.file_pane.out.sbx set] \
 159                 -font font_diff
 160
 161         scrollbar $w.file_pane.out.sbx \
 162                 -orient h \
 163                 -command [list $w_file xview]
 164         scrollbar $w.file_pane.out.sby \
 165                 -orient v \
 166                 -command [list scrollbar2many [list \
 167                 $w_line \
 168                 $w_cgrp \
 169                 $w_file \
 170                 ] yview]
 171         grid \
 172                 $w_cgrp \
 173                 $w_line \
 174                 $w_file \
 175                 $w.file_pane.out.sby \
 176                 -sticky nsew
 177         grid conf $w.file_pane.out.sbx -column 2 -sticky we
 178         grid columnconfigure $w.file_pane.out 2 -weight 1
 179         grid rowconfigure $w.file_pane.out 0 -weight 1
 180
 181         set w_cmit $w.file_pane.cm.t
 182         text $w_cmit \
 183                 -background white -borderwidth 0 \
 184                 -state disabled \
 185                 -wrap none \
 186                 -height 10 \
 187                 -width 80 \
 188                 -xscrollcommand [list $w.file_pane.cm.sbx set] \
 189                 -yscrollcommand [list $w.file_pane.cm.sby set] \
 190                 -font font_diff
 191         $w_cmit tag conf header_key \
 192                 -tabs {3c} \
 193                 -background $active_color \
 194                 -font font_uibold
 195         $w_cmit tag conf header_val \
 196                 -background $active_color \
 197                 -font font_ui
 198         $w_cmit tag raise sel
 199         scrollbar $w.file_pane.cm.sbx \
 200                 -orient h \
 201                 -command [list $w_cmit xview]
 202         scrollbar $w.file_pane.cm.sby \
 203                 -orient v \
 204                 -command [list $w_cmit yview]
 205         pack $w.file_pane.cm.sby -side right -fill y
 206         pack $w.file_pane.cm.sbx -side bottom -fill x
 207         pack $w_cmit -expand 1 -fill both
 208
 209         frame $w.status \
 210                 -borderwidth 1 \
 211                 -relief sunken
 212         label $w.status.l \
 213                 -textvariable @status \
 214                 -anchor w \
 215                 -justify left
 216         pack $w.status.l -side left
 217
 218         menu $w.ctxm -tearoff 0
 219         $w.ctxm add command \
 220                 -label "Copy Commit" \
 221                 -command [cb _copycommit]
 222
 223         foreach i [list \
 224                 $w_cgrp \
 225                 $w_line \
 226                 $w_file] {
 227                 $i conf -cursor $cursor_ptr
 228                 $i conf -yscrollcommand \
 229                         [list many2scrollbar [list \
 230                         $w_cgrp \
 231                         $w_line \
 232                         $w_file \
 233                         ] yview $w.file_pane.out.sby]
 234                 bind $i <Button-1> "
 235                         [cb _hide_tooltip]
 236                         [cb _click $i @%x,%y]
 237                         focus $i
 238                 "
 239                 bind $i <Any-Motion>  [cb _show_tooltip $i @%x,%y]
 240                 bind $i <Any-Enter>   [cb _hide_tooltip]
 241                 bind $i <Any-Leave>   [cb _hide_tooltip]
 242                 bind_button3 $i "
 243                         [cb _hide_tooltip]
 244                         set cursorX %x
 245                         set cursorY %y
 246                         set cursorW %W
 247                         tk_popup $w.ctxm %X %Y
 248                 "
 249         }
 250
 251         foreach i [list \
 252                 $w_cgrp \
 253                 $w_line \
 254                 $w_file \
 255                 $w_cmit] {
 256                 bind $i <Key-Up>        {catch {%W yview scroll -1 units};break}
 257                 bind $i <Key-Down>      {catch {%W yview scroll  1 units};break}
 258                 bind $i <Key-Left>      {catch {%W xview scroll -1 units};break}
 259                 bind $i <Key-Right>     {catch {%W xview scroll  1 units};break}
 260                 bind $i <Key-k>         {catch {%W yview scroll -1 units};break}
 261                 bind $i <Key-j>         {catch {%W yview scroll  1 units};break}
 262                 bind $i <Key-h>         {catch {%W xview scroll -1 units};break}
 263                 bind $i <Key-l>         {catch {%W xview scroll  1 units};break}
 264                 bind $i <Control-Key-b> {catch {%W yview scroll -1 pages};break}
 265                 bind $i <Control-Key-f> {catch {%W yview scroll  1 pages};break}
 266         }
 267
 268         bind $w_cmit <Button-1> [list focus $w_cmit]
 269         bind $top <Visibility> [list focus $top]
 270         bind $w_file <Destroy> [list delete_this $this]
 271
 272         grid configure $w.header -sticky ew
 273         grid configure $w.file_pane -sticky nsew
 274         grid configure $w.status -sticky ew
 275         grid columnconfigure $top 0 -weight 1
 276         grid rowconfigure $top 0 -weight 0
 277         grid rowconfigure $top 1 -weight 1
 278         grid rowconfigure $top 2 -weight 0
 279
 280         set req_w [winfo reqwidth  $top]
 281         set req_h [winfo reqheight $top]
 282         if {$req_w < 600} {set req_w 600}
 283         if {$req_h < 400} {set req_h 400}
 284         set g "${req_w}x${req_h}"
 285         wm geometry $top $g
 286         update
 287
 288         set old_height [winfo height $w.file_pane]
 289         $w.file_pane sash place 0 \
 290                 [lindex [$w.file_pane sash coord 0] 0] \
 291                 [expr {int($old_height * 0.70)}]
 292         bind $w.file_pane <Configure> \
 293         "if {{$w.file_pane} eq {%W}} {[cb _resize %h]}"
 294
 295         _load $this
 296 }
 297
 298 method _load {} {
 299         _hide_tooltip $this
 300
 301         if {$total_lines != 0 || $current_fd ne {}} {
 302                 if {$current_fd ne {}} {
 303                         catch {close $current_fd}
 304                         set current_fd {}
 305                 }
 306
 307                 set highlight_line -1
 308                 set highlight_commit {}
 309                 set total_lines 0
 310                 set blame_lines 0
 311                 set commit_count 0
 312                 set commit_list {}
 313                 array unset order
 314                 array unset line_commit
 315                 array unset line_file
 316
 317                 $w_cgrp conf -state normal
 318                 $w_line conf -state normal
 319                 $w_file conf -state normal
 320
 321                 $w_cgrp delete 0.0 end
 322                 $w_line delete 0.0 end
 323                 $w_file delete 0.0 end
 324
 325                 $w_cgrp conf -state disabled
 326                 $w_line conf -state disabled
 327                 $w_file conf -state disabled
 328         }
 329
 330         if {[winfo exists $w.status.c]} {
 331                 $w.status.c coords bar 0 0 0 20
 332         } else {
 333                 canvas $w.status.c \
 334                         -width 100 \
 335                         -height [expr {int([winfo reqheight $w.status.l] * 0.6)}] \
 336                         -borderwidth 1 \
 337                         -relief groove \
 338                         -highlightt 0
 339                 $w.status.c create rectangle 0 0 0 20 -tags bar -fill navy
 340                 pack $w.status.c -side right
 341         }
 342
 343         if {$history eq {}} {
 344                 $w_back conf -state disabled
 345         } else {
 346                 $w_back conf -state normal
 347         }
 348         lappend history [list $commit $path]
 349
 350         set status "Loading $commit:[escape_path $path]..."
 351         $w_path conf -text [escape_path $path]
 352         if {$commit eq {}} {
 353                 set fd [open $path r]
 354         } else {
 355                 set cmd [list git cat-file blob "$commit:$path"]
 356                 set fd [open "| $cmd" r]
 357         }
 358         fconfigure $fd -blocking 0 -translation lf -encoding binary
 359         fileevent $fd readable [cb _read_file $fd]
 360         set current_fd $fd
 361 }
 362
 363 method _history_menu {} {
 364         set m $w.backmenu
 365         if {[winfo exists $m]} {
 366                 $m delete 0 end
 367         } else {
 368                 menu $m -tearoff 0
 369         }
 370
 371         for {set i [expr {[llength $history] - 2}]
 372                 } {$i >= 0} {incr i -1} {
 373                 set e [lindex $history $i]
 374                 set c [lindex $e 0]
 375                 set f [lindex $e 1]
 376
 377                 if {[regexp {^[0-9a-f]{40}$} $c]} {
 378                         set t [string range $c 0 8]...
 379                 } else {
 380                         set t $c
 381                 }
 382                 if {![catch {set summary $header($c,summary)}]} {
 383                         append t " $summary"
 384                         if {[string length $t] > 70} {
 385                                 set t [string range $t 0 66]...
 386                         }
 387                 }
 388
 389                 $m add command -label $t -command [cb _goback $i $c $f]
 390         }
 391         set X [winfo rootx $w_back]
 392         set Y [expr {[winfo rooty $w_back] + [winfo height $w_back]}]
 393         tk_popup $m $X $Y
 394 }
 395
 396 method _goback {i c f} {
 397         set history [lrange $history 0 [expr {$i - 1}]]
 398         set commit $c
 399         set path $f
 400         _load $this
 401 }
 402
 403 method _read_file {fd} {
 404         if {$fd ne $current_fd} {
 405                 catch {close $fd}
 406                 return
 407         }
 408
 409         $w_cgrp conf -state normal
 410         $w_line conf -state normal
 411         $w_file conf -state normal
 412         while {[gets $fd line] >= 0} {
 413                 regsub "\r\$" $line {} line
 414                 incr total_lines
 415
 416                 if {$total_lines > 1} {
 417                         $w_cgrp insert end "\n"
 418                         $w_line insert end "\n"
 419                         $w_file insert end "\n"
 420                 }
 421
 422                 $w_line insert end "$total_lines" linenumber
 423                 $w_file insert end "$line"
 424         }
 425         $w_cgrp conf -state disabled
 426         $w_line conf -state disabled
 427         $w_file conf -state disabled
 428
 429         if {[eof $fd]} {
 430                 close $fd
 431                 _status $this
 432                 set cmd {nice git blame -M -C --incremental}
 433                 if {$commit eq {}} {
 434                         lappend cmd --contents $path
 435                 } else {
 436                         lappend cmd $commit
 437                 }
 438                 lappend cmd -- $path
 439                 set fd [open "| $cmd" r]
 440                 fconfigure $fd -blocking 0 -translation lf -encoding binary
 441                 fileevent $fd readable [cb _read_blame $fd]
 442                 set current_fd $fd
 443         }
 444 } ifdeleted { catch {close $fd} }
 445
 446 method _read_blame {fd} {
 447         variable group_colors
 448
 449         if {$fd ne $current_fd} {
 450                 catch {close $fd}
 451                 return
 452         }
 453
 454         $w_cgrp conf -state normal
 455         while {[gets $fd line] >= 0} {
 456                 if {[regexp {^([a-z0-9]{40}) (\d+) (\d+) (\d+)$} $line line \
 457                         cmit original_line final_line line_count]} {
 458                         set r_commit     $cmit
 459                         set r_orig_line  $original_line
 460                         set r_final_line $final_line
 461                         set r_line_count $line_count
 462
 463                         if {[catch {set g $order($cmit)}]} {
 464                                 set bg [lindex $group_colors 0]
 465                                 set group_colors [lrange $group_colors 1 end]
 466                                 lappend group_colors $bg
 467
 468                                 $w_cgrp tag conf g$cmit -background $bg
 469                                 $w_line tag conf g$cmit -background $bg
 470                                 $w_file tag conf g$cmit -background $bg
 471
 472                                 set order($cmit) $commit_count
 473                                 incr commit_count
 474                                 lappend commit_list $cmit
 475                         }
 476                 } elseif {[string match {filename *} $line]} {
 477                         set file [string range $line 9 end]
 478                         set n    $r_line_count
 479                         set lno  $r_final_line
 480                         set cmit $r_commit
 481
 482                         if {[regexp {^0{40}$} $cmit]} {
 483                                 set commit_abbr work
 484                                 set commit_type curr_commit
 485                         } elseif {$cmit eq $commit} {
 486                                 set commit_abbr this
 487                                 set commit_type curr_commit
 488                         } else {
 489                                 set commit_type prior_commit
 490                                 set commit_abbr [string range $cmit 0 4]
 491                         }
 492
 493                         set author_abbr {}
 494                         set a_name {}
 495                         catch {set a_name $header($cmit,author)}
 496                         while {$a_name ne {}} {
 497                                 if {![regexp {^([[:upper:]])} $a_name _a]} break
 498                                 append author_abbr $_a
 499                                 unset _a
 500                                 if {![regsub \
 501                                         {^[[:upper:]][^\s]*\s+} \
 502                                         $a_name {} a_name ]} break
 503                         }
 504                         if {$author_abbr eq {}} {
 505                                 set author_abbr { |}
 506                         } else {
 507                                 set author_abbr [string range $author_abbr 0 3]
 508                                 while {[string length $author_abbr] < 4} {
 509                                         set author_abbr " $author_abbr"
 510                                 }
 511                         }
 512                         unset a_name
 513
 514                         set first_lno $lno
 515                         while {
 516                            ![catch {set ncmit $line_commit([expr {$first_lno - 1}])}]
 517                         && ![catch {set nfile $line_file([expr {$first_lno - 1}])}]
 518                         && $ncmit eq $cmit
 519                         && $nfile eq $file
 520                         } {
 521                                 incr first_lno -1
 522                         }
 523
 524                         while {$n > 0} {
 525                                 set lno_e "$lno.0 lineend + 1c"
 526                                 if {![catch {set g g$line_commit($lno)}]} {
 527                                         $w_cgrp tag remove g$g $lno.0 $lno_e
 528                                         $w_line tag remove g$g $lno.0 $lno_e
 529                                         $w_file tag remove g$g $lno.0 $lno_e
 530
 531                                         $w_cgrp tag remove a$g $lno.0 $lno_e
 532                                         $w_line tag remove a$g $lno.0 $lno_e
 533                                         $w_file tag remove a$g $lno.0 $lno_e
 534                                 }
 535
 536                                 set line_commit($lno) $cmit
 537                                 set line_file($lno)   $file
 538
 539                                 $w_cgrp delete $lno.0 "$lno.0 lineend"
 540                                 if {$lno == $first_lno} {
 541                                         $w_cgrp insert $lno.0 $commit_abbr $commit_type
 542                                 } elseif {$lno == [expr {$first_lno + 1}]} {
 543                                         $w_cgrp insert $lno.0 $author_abbr
 544                                 } else {
 545                                         $w_cgrp insert $lno.0 { |}
 546                                 }
 547
 548                                 $w_cgrp tag add g$cmit $lno.0 $lno_e
 549                                 $w_line tag add g$cmit $lno.0 $lno_e
 550                                 $w_file tag add g$cmit $lno.0 $lno_e
 551
 552                                 $w_cgrp tag add a$cmit $lno.0 $lno_e
 553                                 $w_line tag add a$cmit $lno.0 $lno_e
 554                                 $w_file tag add a$cmit $lno.0 $lno_e
 555
 556                                 if {$highlight_line == -1} {
 557                                         if {[lindex [$w_file yview] 0] == 0} {
 558                                                 $w_file see $lno.0
 559                                                 _showcommit $this $lno
 560                                         }
 561                                 } elseif {$highlight_line == $lno} {
 562                                         _showcommit $this $lno
 563                                 }
 564
 565                                 incr n -1
 566                                 incr lno
 567                                 incr blame_lines
 568                         }
 569
 570                         while {
 571                            ![catch {set ncmit $line_commit($lno)}]
 572                         && ![catch {set nfile $line_file($lno)}]
 573                         && $ncmit eq $cmit
 574                         && $nfile eq $file
 575                         } {
 576                                 $w_cgrp delete $lno.0 "$lno.0 lineend"
 577
 578                                 if {$lno == $first_lno} {
 579                                         $w_cgrp insert $lno.0 $commit_abbr $commit_type
 580                                 } elseif {$lno == [expr {$first_lno + 1}]} {
 581                                         $w_cgrp insert $lno.0 $author_abbr
 582                                 } else {
 583                                         $w_cgrp insert $lno.0 { |}
 584                                 }
 585                                 incr lno
 586                         }
 587
 588                 } elseif {[regexp {^([a-z-]+) (.*)$} $line line key data]} {
 589                         set header($r_commit,$key) $data
 590                 }
 591         }
 592         $w_cgrp conf -state disabled
 593
 594         if {[eof $fd]} {
 595                 close $fd
 596                 set current_fd {}
 597                 set status {Annotation complete.}
 598                 destroy $w.status.c
 599         } else {
 600                 _status $this
 601         }
 602 } ifdeleted { catch {close $fd} }
 603
 604 method _status {} {
 605         set have  $blame_lines
 606         set total $total_lines
 607         set pdone 0
 608         if {$total} {set pdone [expr {100 * $have / $total}]}
 609
 610         set status [format \
 611                 "Loading annotations... %i of %i lines annotated (%2i%%)" \
 612                 $have $total $pdone]
 613         $w.status.c coords bar 0 0 $pdone 20
 614 }
 615
 616 method _click {cur_w pos} {
 617         set lno [lindex [split [$cur_w index $pos] .] 0]
 618         if {$lno eq {}} return
 619         _showcommit $this $lno
 620 }
 621
 622 method _load_commit {pos} {
 623         set lno [lindex [split [$w_cgrp index $pos] .] 0]
 624         if {[catch {set cmit $line_commit($lno)}]} return
 625         if {[catch {set file $line_file($lno)  }]} return
 626
 627         set commit $cmit
 628         set path $file
 629         _load $this
 630 }
 631
 632 method _showcommit {lno} {
 633         global repo_config
 634         variable active_color
 635
 636         if {$highlight_commit ne {}} {
 637                 set cmit $highlight_commit
 638                 $w_cgrp tag conf a$cmit -background {}
 639                 $w_line tag conf a$cmit -background {}
 640                 $w_file tag conf a$cmit -background {}
 641         }
 642
 643         $w_cmit conf -state normal
 644         $w_cmit delete 0.0 end
 645         if {[catch {set cmit $line_commit($lno)}]} {
 646                 set cmit {}
 647                 $w_cmit insert end "Loading annotation..."
 648         } else {
 649                 $w_cgrp tag conf a$cmit -background $active_color
 650                 $w_line tag conf a$cmit -background $active_color
 651                 $w_file tag conf a$cmit -background $active_color
 652
 653                 set author_name {}
 654                 set author_email {}
 655                 set author_time {}
 656                 catch {set author_name $header($cmit,author)}
 657                 catch {set author_email $header($cmit,author-mail)}
 658                 catch {set author_time [clock format \
 659                         $header($cmit,author-time) \
 660                         -format {%Y-%m-%d %H:%M:%S}
 661                 ]}
 662
 663                 set committer_name {}
 664                 set committer_email {}
 665                 set committer_time {}
 666                 catch {set committer_name $header($cmit,committer)}
 667                 catch {set committer_email $header($cmit,committer-mail)}
 668                 catch {set committer_time [clock format \
 669                         $header($cmit,committer-time) \
 670                         -format {%Y-%m-%d %H:%M:%S}
 671                 ]}
 672
 673                 if {[catch {set msg $header($cmit,message)}]} {
 674                         set msg {}
 675                         catch {
 676                                 set fd [open "| git cat-file commit $cmit" r]
 677                                 fconfigure $fd -encoding binary -translation lf
 678                                 if {[catch {set enc $repo_config(i18n.commitencoding)}]} {
 679                                         set enc utf-8
 680                                 }
 681                                 while {[gets $fd line] > 0} {
 682                                         if {[string match {encoding *} $line]} {
 683                                                 set enc [string tolower [string range $line 9 end]]
 684                                         }
 685                                 }
 686                                 set msg [encoding convertfrom $enc [read $fd]]
 687                                 set msg [string trim $msg]
 688                                 close $fd
 689
 690                                 set author_name [encoding convertfrom $enc $author_name]
 691                                 set committer_name [encoding convertfrom $enc $committer_name]
 692
 693                                 set header($cmit,author) $author_name
 694                                 set header($cmit,committer) $committer_name
 695                         }
 696                         set header($cmit,message) $msg
 697                 }
 698
 699                 $w_cmit insert end "commit $cmit\n" header_key
 700                 $w_cmit insert end "Author:\t" header_key
 701                 $w_cmit insert end "$author_name $author_email" header_val
 702                 $w_cmit insert end "$author_time\n" header_val
 703
 704                 $w_cmit insert end "Committer:\t" header_key
 705                 $w_cmit insert end "$committer_name $committer_email" header_val
 706                 $w_cmit insert end "$committer_time\n" header_val
 707
 708                 if {$line_file($lno) ne $path} {
 709                         $w_cmit insert end "Original File:\t" header_key
 710                         $w_cmit insert end "[escape_path $line_file($lno)]\n" header_val
 711                 }
 712
 713                 $w_cmit insert end "\n$msg"
 714         }
 715         $w_cmit conf -state disabled
 716
 717         set highlight_line $lno
 718         set highlight_commit $cmit
 719
 720         if {$highlight_commit eq $tooltip_commit} {
 721                 _hide_tooltip $this
 722         }
 723 }
 724
 725 method _copycommit {} {
 726         set pos @$::cursorX,$::cursorY
 727         set lno [lindex [split [$::cursorW index $pos] .] 0]
 728         if {![catch {set commit $line_commit($lno)}]} {
 729                 clipboard clear
 730                 clipboard append \
 731                         -format STRING \
 732                         -type STRING \
 733                         -- $commit
 734         }
 735 }
 736
 737 method _show_tooltip {cur_w pos} {
 738         set lno [lindex [split [$cur_w index $pos] .] 0]
 739         if {[catch {set cmit $line_commit($lno)}]} {
 740                 _hide_tooltip $this
 741                 return
 742         }
 743
 744         if {$cmit eq $highlight_commit} {
 745                 _hide_tooltip $this
 746                 return
 747         }
 748
 749         if {$cmit eq $tooltip_commit} {
 750                 _position_tooltip $this
 751         } elseif {$tooltip_wm ne {}} {
 752                 _open_tooltip $this $cur_w
 753         } elseif {$tooltip_timer eq {}} {
 754                 set tooltip_timer [after 1000 [cb _open_tooltip $cur_w]]
 755         }
 756 }
 757
 758 method _open_tooltip {cur_w} {
 759         set tooltip_timer {}
 760         set pos_x [winfo pointerx $cur_w]
 761         set pos_y [winfo pointery $cur_w]
 762         if {[winfo containing $pos_x $pos_y] ne $cur_w} {
 763                 _hide_tooltip $this
 764                 return
 765         }
 766
 767         set pos @[join [list \
 768                 [expr {$pos_x - [winfo rootx $cur_w]}] \
 769                 [expr {$pos_y - [winfo rooty $cur_w]}]] ,]
 770         set lno [lindex [split [$cur_w index $pos] .] 0]
 771         set cmit $line_commit($lno)
 772
 773         set author_name {}
 774         set author_email {}
 775         set author_time {}
 776         catch {set author_name $header($cmit,author)}
 777         catch {set author_email $header($cmit,author-mail)}
 778         catch {set author_time [clock format \
 779                 $header($cmit,author-time) \
 780                 -format {%Y-%m-%d %H:%M:%S}
 781         ]}
 782
 783         set committer_name {}
 784         set committer_email {}
 785         set committer_time {}
 786         catch {set committer_name $header($cmit,committer)}
 787         catch {set committer_email $header($cmit,committer-mail)}
 788         catch {set committer_time [clock format \
 789                 $header($cmit,committer-time) \
 790                 -format {%Y-%m-%d %H:%M:%S}
 791         ]}
 792
 793         set summary {}
 794         catch {set summary $header($cmit,summary)}
 795
 796         set tooltip_commit $cmit
 797         set tooltip_text "commit $cmit
 798 $author_name $author_email  $author_time
 799 $summary"
 800
 801         set file $line_file($lno)
 802         if {$file ne $path} {
 803                 append tooltip_text "
 804
 805 Original File: $file"
 806         }
 807
 808         if {$tooltip_wm ne "$cur_w.tooltip"} {
 809                 _hide_tooltip $this
 810
 811                 set tooltip_wm [toplevel $cur_w.tooltip -borderwidth 1]
 812                 wm overrideredirect $tooltip_wm 1
 813                 wm transient $tooltip_wm [winfo toplevel $cur_w]
 814                 pack [label $tooltip_wm.label \
 815                         -background lightyellow \
 816                         -foreground black \
 817                         -textvariable @tooltip_text \
 818                         -justify left]
 819         }
 820         _position_tooltip $this
 821 }
 822
 823 method _position_tooltip {} {
 824         set req_w [winfo reqwidth  $tooltip_wm.label]
 825         set req_h [winfo reqheight $tooltip_wm.label]
 826         set pos_x [expr {[winfo pointerx .] +  5}]
 827         set pos_y [expr {[winfo pointery .] + 10}]
 828
 829         set g "${req_w}x${req_h}"
 830         if {$pos_x >= 0} {append g +}
 831         append g $pos_x
 832         if {$pos_y >= 0} {append g +}
 833         append g $pos_y
 834
 835         wm geometry $tooltip_wm $g
 836         raise $tooltip_wm
 837 }
 838
 839 method _hide_tooltip {} {
 840         if {$tooltip_wm ne {}} {
 841                 destroy $tooltip_wm
 842                 set tooltip_wm {}
 843                 set tooltip_commit {}
 844         }
 845         if {$tooltip_timer ne {}} {
 846                 after cancel $tooltip_timer
 847                 set tooltip_timer {}
 848         }
 849 }
 850
 851 method _resize {new_height} {
 852         set diff [expr {$new_height - $old_height}]
 853         if {$diff == 0} return
 854
 855         set my [expr {[winfo height $w.file_pane] - 25}]
 856         set o [$w.file_pane sash coord 0]
 857         set ox [lindex $o 0]
 858         set oy [expr {[lindex $o 1] + $diff}]
 859         if {$oy < 0}   {set oy 0}
 860         if {$oy > $my} {set oy $my}
 861         $w.file_pane sash place 0 $ox $oy
 862
 863         set old_height $new_height
 864 }
 865
 866 }