lib/blame.tcl

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